/* roulang page: index */
:root {
            --bg-base: #0D1117;
            --bg-panel: #151B23;
            --bg-card: #1B242E;
            --border-line: #2A3642;
            --accent-lime: #B7F04A;
            --accent-lime-hover: #C9FF5D;
            --accent-orange: #FF5C39;
            --accent-cyan: #3ED6E8;
            --accent-green: #2FD07B;
            --accent-yellow: #F4B740;
            --accent-red: #FF4D4F;
            --text-primary: #EDF2F7;
            --text-secondary: #9AA7B3;
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 44px rgba(0, 0, 0, 0.50);
            --space-section: 72px;
            --font-sans: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'Roboto Mono', 'DIN Alternate', monospace;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-base);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        a,
        a:visited {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        [data-mono] {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }

        .section {
            padding: var(--space-section) 0;
            position: relative;
        }

        .section-header {
            margin-bottom: 36px;
            max-width: 780px;
        }

        .section-header h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            background: rgba(183, 240, 74, 0.1);
            color: var(--accent-lime);
            border: 1px solid rgba(183, 240, 74, 0.3);
            border-radius: var(--radius-btn);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.25s ease;
            position: relative;
            min-height: 48px;
            text-align: center;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--accent-lime);
            color: #0D1117;
            border: 1px solid var(--accent-lime);
        }

        .btn-primary:hover {
            background: var(--accent-lime-hover);
            border-color: var(--accent-lime-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(183, 240, 74, 0.25);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--text-primary);
        }

        .btn-secondary:hover {
            background: rgba(237, 242, 247, 0.08);
            border-color: #EDF2F7;
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .btn:disabled {
            opacity: 0.45;
            cursor: not-allowed;
            pointer-events: none;
        }

        .btn-loading {
            color: transparent !important;
        }

        .btn-loading::after {
            content: '';
            position: absolute;
            width: 18px;
            height: 18px;
            border: 2px solid transparent;
            border-top-color: currentColor;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        .btn-success {
            background: var(--accent-green) !important;
            color: #fff !important;
            border-color: var(--accent-green) !important;
        }

        input[type="text"],
        input[type="tel"],
        input[type="email"],
        select,
        textarea {
            height: 48px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-input);
            padding: 0 16px;
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            width: 100%;
        }

        textarea {
            height: auto;
            min-height: 100px;
            padding: 12px 16px;
            resize: vertical;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-bottom-color: var(--accent-lime);
            box-shadow: 0 0 0 3px rgba(183, 240, 74, 0.18);
            outline: none;
        }

        .input-error {
            border-color: var(--accent-red) !important;
            box-shadow: 0 0 0 3px rgba(255, 77, 79, 0.15) !important;
        }

        .error-text {
            color: var(--accent-red);
            font-size: 0.75rem;
            margin-top: 6px;
            display: block;
        }

        /* Left Vertical Navigation */
        .global-nav {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 256px;
            background: var(--bg-base);
            border-right: 1px solid var(--border-line);
            z-index: 100;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
        }

        .nav-brand {
            height: 72px;
            display: flex;
            align-items: center;
            padding: 0 20px;
            gap: 12px;
            flex-shrink: 0;
            border-bottom: 1px solid var(--border-line);
        }

        .nav-brand .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--accent-lime);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: #0D1117;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-brand .logo-text {
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .nav-list {
            flex: 1;
            padding: 16px 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .nav-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 16px;
            margin: 0 16px;
            height: 36px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            font-weight: 500;
            transition: all 0.2s ease;
            position: relative;
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-list a:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }

        .nav-list a.active {
            color: var(--text-primary);
            background: var(--bg-panel);
            font-weight: 600;
        }

        .nav-list a.active::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--accent-lime);
            border-radius: 0 2px 2px 0;
        }

        .nav-list a .nav-icon {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .nav-list a .nav-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .nav-status {
            margin: 0 16px 16px;
            padding: 14px 16px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            flex-shrink: 0;
        }

        .nav-status .status-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-primary);
            font-weight: 500;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-green);
            box-shadow: 0 0 0 3px rgba(47, 208, 123, 0.2);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 3px rgba(47, 208, 123, 0.2);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(47, 208, 123, 0.05);
            }
        }

        .nav-status p {
            font-size: 0.78rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        .main-content {
            margin-left: 256px;
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        /* Mobile Top Navigation */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-base);
            border-bottom: 1px solid var(--border-line);
            z-index: 100;
            align-items: center;
            padding: 0 16px;
            justify-content: space-between;
        }

        .mobile-nav .hamburger {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border-radius: 8px;
            background: none;
            border: none;
            color: var(--text-primary);
            transition: background 0.2s ease;
        }

        .mobile-nav .hamburger:hover {
            background: var(--bg-card);
        }

        .mobile-nav .hamburger svg {
            width: 24px;
            height: 24px;
            stroke: currentColor;
            stroke-width: 2;
            fill: none;
            stroke-linecap: round;
        }

        .mobile-nav .mobile-logo {
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-nav .mobile-logo .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--accent-lime);
            border-radius: 7px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: #0D1117;
            font-size: 0.95rem;
        }

        .mobile-nav .mobile-cta {
            padding: 8px 16px;
            background: var(--accent-lime);
            color: #0D1117;
            border-radius: var(--radius-btn);
            font-size: 0.82rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.2s ease;
            min-height: 44px;
            display: flex;
            align-items: center;
        }

        .mobile-nav .mobile-cta:hover {
            background: var(--accent-lime-hover);
        }

        .mobile-drawer-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 99;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-drawer-overlay.open {
            opacity: 1;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 320px;
            max-width: 85vw;
            background: var(--bg-base);
            border-right: 1px solid var(--border-line);
            z-index: 101;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
            padding-top: 16px;
        }

        .mobile-drawer.open {
            transform: translateX(0);
        }

        .mobile-drawer .mobile-drawer-header {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            margin-bottom: 16px;
        }

        .mobile-drawer .mobile-drawer-header span {
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-drawer .close-btn {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border-radius: 8px;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            line-height: 1;
        }

        .mobile-drawer .close-btn:hover {
            background: var(--bg-card);
        }

        .mobile-drawer .mobile-nav-list {
            display: flex;
            flex-direction: column;
            padding: 0 8px;
            gap: 2px;
        }

        .mobile-drawer .mobile-nav-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 16px;
            height: 48px;
            border-radius: 10px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.2s ease;
            text-decoration: none;
        }

        .mobile-drawer .mobile-nav-list a:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }

        .mobile-drawer .mobile-nav-list a.active {
            color: var(--text-primary);
            background: var(--bg-panel);
            font-weight: 600;
            border-left: 4px solid var(--accent-lime);
            border-radius: 0 10px 10px 0;
        }

        /* Hero / Metrics Dashboard */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 80px 0 60px;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(13, 17, 23, 0.92) 20%, rgba(13, 17, 23, 0.75) 50%, rgba(13, 17, 23, 0.88) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 40px;
            align-items: center;
        }

        .hero-left {
            flex: 0 0 55%;
            max-width: 55%;
        }

        .hero-left .hero-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(183, 240, 74, 0.1);
            border: 1px solid rgba(183, 240, 74, 0.3);
            border-radius: var(--radius-btn);
            color: var(--accent-lime);
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero-left h1 {
            font-size: clamp(2rem, 4.5vw, 3.5rem);
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.1;
            margin-bottom: 16px;
            color: #fff;
        }

        .hero-left .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 28px;
            max-width: 480px;
        }

        .hero-left .hero-cta-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-right {
            flex: 0 0 45%;
            max-width: 45%;
        }

        .dashboard-card {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .dashboard-card .dashboard-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-line);
        }

        .dashboard-card .dashboard-header h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .dashboard-card .dashboard-header .live-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            color: var(--accent-green);
            font-weight: 600;
        }

        .metric-bar-row {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .metric-bar {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .metric-bar .metric-label {
            flex: 0 0 72px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .metric-bar .metric-track {
            flex: 1;
            height: 6px;
            background: var(--border-line);
            border-radius: 999px;
            overflow: hidden;
        }

        .metric-bar .metric-fill {
            height: 100%;
            border-radius: 999px;
            transition: width 0.6s ease;
        }

        .metric-bar .metric-value {
            flex: 0 0 48px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: right;
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        .metric-bar .metric-status {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            flex-shrink: 0;
            margin-left: 4px;
        }

        .dashboard-card .dashboard-footer {
            margin-top: 20px;
            padding-top: 14px;
            border-top: 1px solid var(--border-line);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.75rem;
            color: var(--text-secondary);
        }

        /* KPI Cards */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -20px;
            position: relative;
            z-index: 3;
        }

        .kpi-card {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
        }

        .kpi-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .kpi-card .kpi-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            font-weight: 500;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .kpi-card .kpi-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
            line-height: 1.1;
        }

        .kpi-card .kpi-unit {
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 500;
            margin-left: 4px;
        }

        .kpi-card .kpi-trend {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 12px;
        }

        .kpi-trend.up {
            color: var(--accent-green);
        }

        .kpi-trend.down {
            color: var(--accent-red);
        }

        .kpi-trend.neutral {
            color: var(--text-secondary);
        }

        /* Service Matrix */
        .service-matrix {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 24px;
        }

        .service-card-large {
            grid-row: span 2;
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .service-card-large:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(183, 240, 74, 0.3);
        }

        .service-card-large .service-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-panel);
        }

        .service-card-large .service-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .service-card-large:hover .service-cover img {
            transform: scale(1.05);
        }

        .service-card-large .service-cover::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to top, rgba(13, 17, 23, 0.6) 0%, transparent 50%);
        }

        .service-card-large .service-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .service-card-large .service-body h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .service-card-large .service-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }

        .service-card-large .service-meta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        .service-card-small {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .service-card-small:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(183, 240, 74, 0.3);
        }

        .service-card-small .service-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            color: #0D1117;
            background: var(--accent-lime);
        }

        .service-card-small h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .service-card-small p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.55;
            margin-bottom: 8px;
        }

        .service-card-small .service-data {
            font-size: 0.8rem;
            color: var(--accent-cyan);
            font-weight: 600;
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        .service-grid-right {
            display: grid;
            grid-template-rows: 1fr 1fr;
            gap: 20px;
        }

        .service-row-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 20px;
        }

        /* Results Comparison */
        .results-compare {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .results-compare table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }

        .results-compare th {
            background: var(--bg-card);
            padding: 16px 20px;
            text-align: left;
            font-weight: 700;
            font-size: 0.88rem;
            color: var(--text-primary);
            border-bottom: 1px solid var(--border-line);
            white-space: nowrap;
        }

        .results-compare td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-line);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .results-compare tr:last-child td {
            border-bottom: none;
        }

        .results-compare .highlight-col {
            color: var(--accent-orange);
            font-weight: 700;
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        .results-compare .highlight-cell {
            background: rgba(255, 92, 57, 0.08);
            border-left: 3px solid var(--accent-orange);
        }

        .results-compare .col-positive {
            color: var(--accent-green);
            font-weight: 600;
            font-family: var(--font-mono);
        }

        /* FAQ */
        .faq-container {
            max-width: 820px;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-line);
            padding: 0;
            transition: border-color 0.2s ease;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-line);
        }

        .faq-item.open {
            border-bottom-color: var(--accent-lime);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 0;
            cursor: pointer;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            transition: color 0.2s ease;
            min-height: 44px;
        }

        .faq-question:hover {
            color: var(--accent-lime);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            position: relative;
            transition: transform 0.2s ease;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--accent-lime);
            transition: transform 0.2s ease;
        }

        .faq-icon::before {
            width: 14px;
            height: 2px;
        }

        .faq-icon::after {
            width: 2px;
            height: 14px;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
            padding-right: 32px;
        }

        .faq-answer-inner {
            padding-bottom: 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .testimonial-card .testimonial-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .testimonial-card .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(183, 240, 74, 0.15);
            border: 1px solid rgba(183, 240, 74, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--accent-lime);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .testimonial-card .testimonial-name {
            font-weight: 700;
            font-size: 0.92rem;
            color: var(--text-primary);
        }

        .testimonial-card .testimonial-role {
            font-size: 0.75rem;
            color: var(--text-secondary);
        }

        .testimonial-card .testimonial-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Partner Tags */
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }

        .partner-tag {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-input);
            padding: 20px 16px;
            text-align: center;
            transition: all 0.25s ease;
        }

        .partner-tag:hover {
            transform: translateY(-3px);
            border-color: rgba(183, 240, 74, 0.4);
            background: var(--bg-card);
        }

        .partner-tag .partner-icon {
            width: 36px;
            height: 36px;
            margin: 0 auto 10px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: #0D1117;
            background: var(--accent-lime);
        }

        .partner-tag .partner-name {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .partner-tag .partner-desc {
            font-size: 0.75rem;
            color: var(--text-secondary);
            line-height: 1.4;
        }

        /* Brand Intro */
        .brand-intro {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .brand-intro::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-lime), var(--accent-cyan), var(--accent-orange));
        }

        .brand-intro h2 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .brand-intro p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            max-width: 900px;
        }

        .brand-intro p:last-child {
            margin-bottom: 0;
        }

        /* News */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .news-item {
            display: flex;
            gap: 16px;
            padding: 18px 20px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-input);
            transition: all 0.25s ease;
            align-items: center;
            text-decoration: none;
        }

        .news-item:hover {
            border-color: rgba(183, 240, 74, 0.3);
            background: var(--bg-card);
            transform: translateX(4px);
        }

        .news-item .news-date {
            flex-shrink: 0;
            min-width: 64px;
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-size: 0.82rem;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .news-item .news-content {
            flex: 1;
        }

        .news-item .news-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .news-item .news-summary {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* CTA Form */
        .cta-form-section {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            padding: var(--space-section) 0;
        }

        .cta-form-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 17, 23, 0.9);
            z-index: 1;
        }

        .cta-form-section .container {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 40px;
            align-items: flex-start;
        }

        .cta-form-left {
            flex: 1;
            max-width: 420px;
        }

        .cta-form-left h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: #fff;
        }

        .cta-form-left p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .trust-points {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .trust-point {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.88rem;
            color: var(--text-primary);
            font-weight: 500;
        }

        .trust-point .check-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(183, 240, 74, 0.2);
            border: 1px solid rgba(183, 240, 74, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 0.7rem;
            flex-shrink: 0;
        }

        .cta-form-right {
            flex: 1;
            max-width: 560px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }

        .cta-form-right h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .form-submit-btn {
            width: 100%;
            min-height: 48px;
            background: var(--accent-lime);
            color: #0D1117;
            border: 1px solid var(--accent-lime);
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.25s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .form-submit-btn:hover {
            background: var(--accent-lime-hover);
            border-color: var(--accent-lime-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(183, 240, 74, 0.2);
        }

        .form-submit-btn:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .form-submit-btn:disabled {
            opacity: 0.45;
            cursor: not-allowed;
            pointer-events: none;
        }

        .form-submit-btn.form-success {
            background: var(--accent-green) !important;
            border-color: var(--accent-green) !important;
            color: #fff !important;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-line);
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-top: 12px;
            max-width: 260px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-primary);
        }

        .footer-brand .footer-logo .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--accent-lime);
            border-radius: 7px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: #0D1117;
            font-size: 0.9rem;
        }

        .footer-column h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .footer-column ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-column ul a {
            font-size: 0.82rem;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s ease;
            display: inline-block;
        }

        .footer-column ul a:hover {
            color: var(--accent-lime);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-line);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-secondary);
        }

        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .footer-bottom .footer-links a:hover {
            color: var(--accent-lime);
        }

        .footer-bottom .beian-info {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }

        /* Breadcrumb */
        .breadcrumb {
            padding: 24px 0 0;
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--accent-lime);
        }

        .breadcrumb .sep {
            color: var(--border-line);
        }

        .breadcrumb .current {
            color: var(--accent-lime);
            font-weight: 600;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .global-nav {
                display: none;
            }

            .mobile-nav {
                display: flex;
            }

            .mobile-drawer-overlay {
                display: block;
                pointer-events: none;
            }

            .mobile-drawer-overlay.open {
                pointer-events: auto;
            }

            .mobile-drawer {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }

            .hero {
                min-height: auto;
                padding: 40px 0 60px;
            }

            .hero .container {
                flex-direction: column;
                gap: 28px;
            }

            .hero-left,
            .hero-right {
                flex: 0 0 100%;
                max-width: 100%;
            }

            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: 0;
            }

            .service-matrix {
                grid-template-columns: 1fr;
            }

            .service-card-large {
                grid-row: auto;
            }

            .service-grid-right {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
            }

            .service-row-2 {
                grid-template-columns: 1fr;
            }

            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .partner-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .cta-form-section .container {
                flex-direction: column;
            }

            .cta-form-left,
            .cta-form-right {
                max-width: 100%;
            }

            .container {
                padding: 0 20px;
            }

            :root {
                --space-section: 48px;
            }
        }

        @media (max-width: 768px) {
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
            }

            .service-grid-right {
                grid-template-columns: 1fr;
            }

            .testimonial-grid {
                grid-template-columns: 1fr;
            }

            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .results-compare {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }

            .results-compare table {
                min-width: 640px;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .brand-intro {
                padding: 24px 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }

            :root {
                --space-section: 32px;
            }
        }

        @media (max-width: 480px) {
            .kpi-grid {
                grid-template-columns: 1fr;
            }

            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .hero-left h1 {
                font-size: 1.8rem;
            }

            .hero-left .hero-subtitle {
                font-size: 1rem;
            }

            .hero-left .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }

            .hero-left .hero-cta-group .btn {
                width: 100%;
            }

            .container {
                padding: 0 16px;
            }

            .news-item {
                flex-direction: column;
                gap: 8px;
                padding: 16px;
            }

            .cta-form-right {
                padding: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-base: #0D1117;
            --bg-panel: #151B23;
            --bg-card: #1B242E;
            --border-line: #2A3642;
            --accent-lime: #B7F04A;
            --accent-lime-hover: #C9FF5D;
            --accent-orange: #FF5C39;
            --accent-cyan: #3ED6E8;
            --accent-green: #2FD07B;
            --accent-yellow: #F4B740;
            --accent-red: #FF4D4F;
            --text-primary: #EDF2F7;
            --text-secondary: #9AA7B3;
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 44px rgba(0, 0, 0, 0.50);
            --space-section: 72px;
            --font-sans: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'Roboto Mono', 'DIN Alternate', monospace;
            --accent-page: #FF5C39;
            --accent-page-hover: #FF7A5C;
            --accent-page-rgb: 255, 92, 57;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            font-size: 16px;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-base);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }
        a,
        a:visited {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }
        [data-mono] {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }
        .section {
            padding: var(--space-section) 0;
            position: relative;
        }
        .section-header {
            margin-bottom: 36px;
            max-width: 780px;
        }
        .section-header h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            background: rgba(var(--accent-page-rgb), 0.1);
            color: var(--accent-page);
            border: 1px solid rgba(var(--accent-page-rgb), 0.3);
            border-radius: var(--radius-btn);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.25s ease;
            position: relative;
            min-height: 48px;
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent-page);
            color: #0D1117;
            border: 1px solid var(--accent-page);
        }
        .btn-primary:hover {
            background: var(--accent-page-hover);
            border-color: var(--accent-page-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(var(--accent-page-rgb), 0.25);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent-lime);
            outline-offset: 2px;
        }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--text-primary);
        }
        .btn-secondary:hover {
            background: rgba(237, 242, 247, 0.08);
            border-color: #EDF2F7;
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--accent-page);
            outline-offset: 2px;
        }
        .btn:disabled {
            opacity: 0.45;
            cursor: not-allowed;
            pointer-events: none;
        }
        .btn-loading {
            color: transparent !important;
        }
        .btn-loading::after {
            content: '';
            position: absolute;
            width: 18px;
            height: 18px;
            border: 2px solid transparent;
            border-top-color: currentColor;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }
        .btn-success {
            background: var(--accent-green) !important;
            color: #fff !important;
            border-color: var(--accent-green) !important;
        }
        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }
        input[type="text"],
        input[type="tel"],
        input[type="email"],
        select,
        textarea {
            height: 48px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-input);
            padding: 0 16px;
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            width: 100%;
        }
        textarea {
            height: auto;
            min-height: 100px;
            padding: 14px 16px;
            resize: vertical;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--accent-lime);
            box-shadow: 0 0 0 3px rgba(183, 240, 74, 0.18);
        }
        .form-error input,
        .form-error select,
        .form-error textarea {
            border-color: var(--accent-red) !important;
            box-shadow: 0 0 0 3px rgba(255, 77, 79, 0.15) !important;
        }
        .error-msg {
            color: var(--accent-red);
            font-size: 0.78rem;
            margin-top: 4px;
            display: none;
        }
        .form-error .error-msg {
            display: block;
        }
        .global-nav {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 256px;
            background: var(--bg-base);
            border-right: 1px solid var(--border-line);
            display: flex;
            flex-direction: column;
            z-index: 100;
            transition: transform 0.3s ease;
        }
        .nav-brand {
            height: 72px;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0 20px;
            border-bottom: 1px solid var(--border-line);
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--accent-page);
            color: #0D1117;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
        }
        .nav-list {
            flex: 1;
            overflow-y: auto;
            padding: 24px 0;
        }
        .nav-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            margin: 0 16px 4px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            font-weight: 500;
            border-left: 4px solid transparent;
            transition: all 0.2s ease;
            min-height: 44px;
        }
        .nav-list a:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }
        .nav-list a.active {
            background: var(--bg-panel);
            color: var(--text-primary);
            border-left-color: var(--accent-page);
            font-weight: 600;
        }
        .nav-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .nav-icon svg {
            width: 100%;
            height: 100%;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .nav-status {
            margin: 0 16px 20px;
            padding: 16px;
            background: var(--bg-card);
            border-radius: 12px;
            border: 1px solid var(--border-line);
            flex-shrink: 0;
        }
        .status-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-green);
            animation: pulse 2s ease-in-out infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
        }
        .nav-status p {
            font-size: 0.78rem;
            color: var(--text-secondary);
            line-height: 1.4;
        }
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-base);
            border-bottom: 1px solid var(--border-line);
            z-index: 99;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }
        .mobile-header .hamburger {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border-radius: 8px;
            transition: background 0.2s ease;
            flex-shrink: 0;
        }
        .mobile-header .hamburger:hover {
            background: var(--bg-card);
        }
        .mobile-header .hamburger svg {
            width: 24px;
            height: 24px;
            fill: none;
            stroke: var(--text-primary);
            stroke-width: 2;
            stroke-linecap: round;
        }
        .mobile-header .mobile-logo {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-header .mobile-logo .logo-icon {
            width: 30px;
            height: 30px;
            font-size: 0.9rem;
            border-radius: 8px;
        }
        .mobile-cta {
            padding: 8px 16px;
            font-size: 0.82rem;
            border-radius: 999px;
            background: var(--accent-page);
            color: #0D1117;
            font-weight: 600;
            cursor: pointer;
            min-height: 36px;
            display: inline-flex;
            align-items: center;
            flex-shrink: 0;
            transition: all 0.2s ease;
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 98;
        }
        .mobile-overlay.open {
            display: block;
        }
        .main-content {
            margin-left: 256px;
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        .breadcrumb {
            padding: 20px 0 0;
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--accent-page);
        }
        .breadcrumb .separator {
            color: var(--border-line);
        }
        .breadcrumb .current {
            color: var(--accent-page);
            font-weight: 500;
        }
        .category-hero {
            position: relative;
            padding: 40px 0 56px;
            overflow: hidden;
            border-radius: 0 0 24px 24px;
        }
        .category-hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            z-index: 0;
        }
        .category-hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.88) 0%, rgba(13, 17, 23, 0.75) 50%, rgba(13, 17, 23, 0.92) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .category-hero h1 .highlight {
            color: var(--accent-page);
        }
        .category-hero p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 650px;
            line-height: 1.6;
        }
        .filter-row {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-line);
            margin-bottom: 32px;
        }
        .filter-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-right: 4px;
        }
        .filter-tag {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid var(--border-line);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            background: transparent;
            min-height: 36px;
            display: inline-flex;
            align-items: center;
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--accent-page);
            color: var(--accent-page);
        }
        .filter-tag.active {
            background: var(--accent-page);
            color: #0D1117;
            border-color: var(--accent-page);
            font-weight: 600;
        }
        .filter-tag:focus-visible {
            outline: 2px solid var(--accent-page);
            outline-offset: 2px;
        }
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .solution-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .solution-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(var(--accent-page-rgb), 0.4);
        }
        .solution-card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--bg-panel);
        }
        .solution-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .solution-card:hover .solution-card-image img {
            transform: scale(1.05);
        }
        .solution-card-image .fallback-text {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 1.1rem;
        }
        .solution-card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .solution-card-tag {
            display: inline-flex;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(var(--accent-page-rgb), 0.12);
            color: var(--accent-page);
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .solution-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .solution-card-summary {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.55;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .solution-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .solution-card-meta .metric {
            font-size: 0.8rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .solution-card-meta .metric-value {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-weight: 600;
            color: var(--text-primary);
        }
        .solution-card-link {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--accent-page);
            transition: all 0.2s ease;
            cursor: pointer;
        }
        .solution-card-link:hover {
            color: var(--accent-page-hover);
            gap: 10px;
        }
        .pagination-row {
            display: flex;
            justify-content: flex-end;
            align-items: center;
            margin-top: 32px;
            gap: 8px;
        }
        .page-btn {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            border: 1px solid var(--border-line);
            background: transparent;
            color: var(--text-secondary);
            font-weight: 500;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
            font-size: 0.9rem;
        }
        .page-btn:hover {
            border-color: var(--accent-page);
            color: var(--accent-page);
        }
        .page-btn.active {
            background: var(--accent-page);
            color: #0D1117;
            border-color: var(--accent-page);
            font-weight: 600;
        }
        .page-btn:focus-visible {
            outline: 2px solid var(--accent-page);
            outline-offset: 2px;
        }
        .load-more-btn {
            padding: 10px 24px;
            border-radius: 999px;
            border: 1px solid var(--text-primary);
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.25s ease;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .load-more-btn:hover {
            background: rgba(237, 242, 247, 0.08);
        }
        .advantage-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 24px;
        }
        .advantage-main {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .advantage-main h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .advantage-main p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            font-size: 0.95rem;
        }
        .advantage-main .highlight-num {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            color: var(--accent-page);
            font-weight: 700;
        }
        .advantage-stack {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .advantage-mini {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: all 0.3s ease;
        }
        .advantage-mini:hover {
            border-color: rgba(var(--accent-page-rgb), 0.4);
            transform: translateY(-2px);
        }
        .advantage-mini .icon-box {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(var(--accent-page-rgb), 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--accent-page);
        }
        .advantage-mini h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .advantage-mini p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.45;
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 24px;
            position: relative;
            transition: all 0.3s ease;
        }
        .process-step:hover {
            border-color: rgba(var(--accent-page-rgb), 0.4);
            transform: translateY(-3px);
        }
        .process-step .step-number {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-size: 2rem;
            font-weight: 700;
            color: rgba(var(--accent-page-rgb), 0.4);
            margin-bottom: 10px;
            line-height: 1;
        }
        .process-step h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 820px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-input);
            overflow: hidden;
            transition: border-color 0.2s ease;
        }
        .faq-item.open {
            border-color: rgba(var(--accent-page-rgb), 0.5);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 600;
            text-align: left;
            color: var(--text-primary);
            transition: background 0.2s ease;
            min-height: 44px;
        }
        .faq-question:hover {
            background: rgba(237, 242, 247, 0.03);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border-line);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all 0.2s ease;
            color: var(--text-secondary);
            font-size: 1.1rem;
            line-height: 1;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-page);
            color: #0D1117;
            border-color: var(--accent-page);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 16px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        .cta-section {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: 24px;
            padding: 48px 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(var(--accent-page-rgb), 0.08);
            pointer-events: none;
        }
        .cta-left {
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            z-index: 1;
        }
        .cta-left h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-left p {
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 20px;
        }
        .trust-points {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .trust-point {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-primary);
        }
        .trust-point .check-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--accent-green);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            flex-shrink: 0;
        }
        .cta-form {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--border-line);
            position: relative;
            z-index: 1;
        }
        .cta-form h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .form-group .required {
            color: var(--accent-red);
        }
        .site-footer {
            background: var(--bg-base);
            border-top: 1px solid var(--border-line);
            padding: 48px 0 32px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.65;
            max-width: 320px;
        }
        .footer-column h4 {
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .footer-column ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-column a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            transition: color 0.2s ease;
        }
        .footer-column a:hover {
            color: var(--accent-page);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-line);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        .beian-info {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-links {
            display: flex;
            gap: 16px;
            margin-left: auto;
        }
        .footer-links a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--accent-page);
        }
        @media (max-width: 1024px) {
            .global-nav {
                transform: translateX(-100%);
                width: 280px;
            }
            .global-nav.open {
                transform: translateX(0);
                box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }
            .container {
                padding: 0 24px;
            }
            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .advantage-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-section {
                grid-template-columns: 1fr;
                padding: 32px 24px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 48px;
            }
            .container {
                padding: 0 16px;
            }
            .solution-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .category-hero {
                padding: 24px 0 36px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-links {
                margin-left: 0;
            }
            .filter-row {
                gap: 8px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .pagination-row {
                justify-content: center;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .beian-info {
                flex-direction: column;
                gap: 4px;
            }
            .cta-section {
                padding: 24px 16px;
                border-radius: 16px;
            }
            .cta-form {
                padding: 20px 16px;
            }
            .filter-label {
                width: 100%;
            }
            .filter-tag {
                padding: 6px 14px;
                font-size: 0.78rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-base: #0D1117;
            --bg-panel: #151B23;
            --bg-card: #1B242E;
            --border-line: #2A3642;
            --accent-lime: #B7F04A;
            --accent-lime-hover: #C9FF5D;
            --accent-orange: #FF5C39;
            --accent-cyan: #3ED6E8;
            --accent-green: #2FD07B;
            --accent-yellow: #F4B740;
            --accent-red: #FF4D4F;
            --text-primary: #EDF2F7;
            --text-secondary: #9AA7B3;
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 44px rgba(0, 0, 0, 0.50);
            --space-section: 72px;
            --font-sans: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'Roboto Mono', 'DIN Alternate', monospace;
            --nav-width: 256px;
        }
        html {
            font-size: 16px;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            box-sizing: border-box;
        }
        *,
        *::before,
        *::after {
            box-sizing: inherit;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-base);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }
        a,
        a:visited {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
        }
        [data-mono] {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }
        .section {
            padding: var(--space-section) 0;
            position: relative;
        }
        .section-header {
            margin-bottom: 36px;
            max-width: 780px;
        }
        .section-header h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            background: rgba(183, 240, 74, 0.1);
            color: var(--accent-lime);
            border: 1px solid rgba(183, 240, 74, 0.3);
            border-radius: var(--radius-btn);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.25s ease;
            position: relative;
            min-height: 48px;
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent-lime);
            color: #0D1117;
            border: 1px solid var(--accent-lime);
        }
        .btn-primary:hover {
            background: var(--accent-lime-hover);
            border-color: var(--accent-lime-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(183, 240, 74, 0.25);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--text-primary);
        }
        .btn-secondary:hover {
            background: rgba(237, 242, 247, 0.08);
            border-color: #EDF2F7;
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        .btn:disabled {
            opacity: 0.45;
            cursor: not-allowed;
            pointer-events: none;
        }
        .btn-loading {
            color: transparent !important;
        }
        .btn-loading::after {
            content: '';
            position: absolute;
            width: 18px;
            height: 18px;
            border: 2px solid transparent;
            border-top-color: currentColor;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }
        .btn-success {
            background: var(--accent-green) !important;
            color: #fff !important;
            border-color: var(--accent-green) !important;
        }
        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }
        input[type="text"],
        input[type="tel"],
        input[type="email"],
        select,
        textarea {
            height: 48px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-input);
            padding: 0 16px;
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            width: 100%;
        }
        textarea {
            height: auto;
            min-height: 110px;
            padding: 12px 16px;
            resize: vertical;
        }
        input[type="text"]:focus,
        input[type="tel"]:focus,
        input[type="email"]:focus,
        select:focus,
        textarea:focus {
            border-color: var(--accent-lime);
            box-shadow: 0 0 0 3px rgba(183, 240, 74, 0.18);
        }
        input[type="text"].error,
        input[type="tel"].error,
        input[type="email"].error,
        select.error,
        textarea.error {
            border-color: var(--accent-red);
            box-shadow: 0 0 0 3px rgba(255, 77, 79, 0.16);
        }
        .field-error {
            color: var(--accent-red);
            font-size: 0.8rem;
            margin-top: 6px;
            display: none;
        }
        .field-error.show {
            display: block;
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .global-nav {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: var(--nav-width);
            background: var(--bg-base);
            border-right: 1px solid var(--border-line);
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding-top: 0;
            transition: transform 0.3s ease;
        }
        .nav-brand {
            height: 72px;
            display: flex;
            align-items: center;
            padding: 0 20px;
            gap: 12px;
            border-bottom: 1px solid var(--border-line);
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--accent-lime);
            color: #0D1117;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .logo-text {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.02em;
        }
        .nav-list {
            flex: 1;
            padding: 16px 0;
            overflow-y: auto;
        }
        .nav-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 16px;
            margin: 2px 16px;
            height: 44px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            font-weight: 500;
            position: relative;
            transition: all 0.2s ease;
        }
        .nav-list a:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }
        .nav-list a.active {
            background: var(--bg-panel);
            color: var(--text-primary);
            font-weight: 600;
        }
        .nav-list a.active::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 8px;
            bottom: 8px;
            width: 4px;
            background: var(--accent-lime);
            border-radius: 0 4px 4px 0;
        }
        .nav-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .nav-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .nav-status {
            margin: 16px;
            padding: 20px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            flex-shrink: 0;
        }
        .status-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 6px;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-green);
            box-shadow: 0 0 8px rgba(47, 208, 123, 0.5);
            animation: pulse 2s ease-in-out infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
        }
        .nav-status p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.4;
        }
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-base);
            border-bottom: 1px solid var(--border-line);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            justify-content: space-between;
        }
        .hamburger {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border-radius: 8px;
            transition: background 0.2s ease;
        }
        .hamburger:hover {
            background: var(--bg-card);
        }
        .hamburger svg {
            width: 24px;
            height: 24px;
            fill: none;
            stroke: var(--text-primary);
            stroke-width: 2;
            stroke-linecap: round;
        }
        .mobile-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 1.1rem;
        }
        .mobile-logo .logo-icon {
            width: 28px;
            height: 28px;
            font-size: 0.9rem;
            border-radius: 6px;
        }
        .mobile-cta {
            min-height: 36px;
            padding: 8px 16px;
            font-size: 0.82rem;
        }
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 98;
        }
        .nav-overlay.show {
            display: block;
        }
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .breadcrumb {
            padding: 20px 0 0;
            font-size: 0.88rem;
            color: var(--text-secondary);
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--accent-lime);
        }
        .breadcrumb .sep {
            margin: 0 8px;
            color: var(--border-line);
        }
        .breadcrumb .current {
            color: var(--accent-lime);
            font-weight: 600;
        }
        .cat-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-card);
            overflow: hidden;
            margin-top: 20px;
            min-height: 260px;
            display: flex;
            align-items: center;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 17, 23, 0.88) 0%, rgba(13, 17, 23, 0.7) 55%, rgba(13, 17, 23, 0.45) 100%);
            z-index: 1;
        }
        .cat-hero-inner {
            position: relative;
            z-index: 2;
            padding: 40px;
            max-width: 680px;
        }
        .cat-hero-inner h1 {
            font-size: clamp(1.75rem, 4vw, 2.75rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .cat-hero-inner p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 20px;
        }
        .cat-hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: rgba(183, 240, 74, 0.15);
            color: var(--accent-lime);
            border: 1px solid rgba(183, 240, 74, 0.35);
            border-radius: var(--radius-btn);
            font-size: 0.82rem;
            font-weight: 600;
        }
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 32px 0;
        }
        .filter-tag {
            padding: 8px 18px;
            border: 1px solid var(--border-line);
            border-radius: var(--radius-btn);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.2s ease;
            background: transparent;
            min-height: 40px;
        }
        .filter-tag:hover {
            border-color: var(--text-secondary);
            color: var(--text-primary);
        }
        .filter-tag.active {
            background: var(--accent-lime);
            color: #0D1117;
            border-color: var(--accent-lime);
            font-weight: 700;
        }
        .filter-tag:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(183, 240, 74, 0.4);
        }
        .service-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            background: var(--bg-panel);
            overflow: hidden;
            position: relative;
        }
        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .service-card:hover .service-card-img img {
            transform: scale(1.05);
        }
        .service-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .service-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-primary);
        }
        .service-card-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.55;
            flex: 1;
        }
        .service-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding-top: 10px;
            border-top: 1px solid var(--border-line);
        }
        .service-card-meta span {
            font-size: 0.78rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .service-card-meta .metric {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            color: var(--accent-lime);
            font-weight: 600;
        }
        .service-card-cta {
            font-size: 0.82rem;
            color: var(--accent-lime);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s ease;
            white-space: nowrap;
        }
        .service-card-cta:hover {
            color: var(--accent-lime-hover);
        }
        .load-more {
            display: flex;
            justify-content: flex-end;
            margin-top: 32px;
        }
        .capability-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 24px;
        }
        .capability-big {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .capability-big h3 {
            font-size: 1.35rem;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .capability-big p {
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 16px;
        }
        .capability-tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .capability-tag-list span {
            padding: 6px 14px;
            background: rgba(183, 240, 74, 0.1);
            border: 1px solid rgba(183, 240, 74, 0.25);
            border-radius: var(--radius-btn);
            font-size: 0.78rem;
            color: var(--accent-lime);
            font-weight: 600;
        }
        .capability-small {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .capability-mini {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            flex: 1;
            transition: all 0.3s ease;
        }
        .capability-mini:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .capability-mini h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .capability-mini p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }
        .kpi-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .kpi-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        .kpi-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(183, 240, 74, 0.35);
        }
        .kpi-card .kpi-value {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--accent-lime);
            letter-spacing: -0.02em;
            margin-bottom: 4px;
        }
        .kpi-card .kpi-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }
        .kpi-card .kpi-trend {
            font-size: 0.78rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .kpi-card .kpi-trend.up {
            color: var(--accent-green);
        }
        .kpi-card .kpi-trend.down {
            color: var(--accent-orange);
        }
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .flow-step {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 24px;
            position: relative;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }
        .flow-step:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .flow-step::before {
            counter-increment: step;
            content: counter(step, decimal-leading-zero);
            position: absolute;
            top: 16px;
            right: 20px;
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-size: 1.5rem;
            font-weight: 800;
            color: rgba(183, 240, 74, 0.2);
        }
        .flow-step h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .flow-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }
        .faq-list {
            max-width: 820px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }
        .faq-item.open {
            border-color: rgba(183, 240, 74, 0.4);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            text-align: left;
            min-height: 44px;
            transition: background 0.2s ease;
        }
        .faq-question:hover {
            background: var(--bg-panel);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: -2px;
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--border-line);
            transition: all 0.3s ease;
            font-size: 1.2rem;
            color: var(--text-secondary);
        }
        .faq-item.open .faq-icon {
            border-color: var(--accent-lime);
            color: var(--accent-lime);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease, padding 0.2s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .cta-section {
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 17, 23, 0.92) 0%, rgba(13, 17, 23, 0.78) 100%);
            z-index: 1;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            padding: 48px 40px;
            border-radius: var(--radius-card);
        }
        .cta-left h3 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-left p {
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 16px;
        }
        .cta-trust {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .cta-trust li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .cta-trust li svg {
            width: 16px;
            height: 16px;
            fill: none;
            stroke: var(--accent-lime);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            flex-shrink: 0;
        }
        .cta-form {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 32px;
        }
        .cta-form .form-row {
            margin-bottom: 16px;
        }
        .cta-form label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .cta-form .form-submit {
            margin-top: 20px;
        }
        .cta-form .form-submit .btn {
            width: 100%;
        }
        .site-footer {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-line);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-top: 12px;
            max-width: 320px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.1rem;
        }
        .footer-logo .logo-icon {
            width: 30px;
            height: 30px;
            font-size: 0.85rem;
            border-radius: 6px;
        }
        .footer-column h4 {
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .footer-column ul li {
            margin-bottom: 8px;
        }
        .footer-column ul a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .footer-column ul a:hover {
            color: var(--accent-lime);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-line);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--text-secondary);
        }
        .beian-info {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-links {
            display: flex;
            gap: 16px;
        }
        .footer-links a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--accent-lime);
        }
        @media (max-width: 1024px) {
            :root {
                --space-section: 48px;
                --nav-width: 0px;
            }
            .global-nav {
                transform: translateX(-100%);
                width: 320px;
                box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
            }
            .global-nav.show {
                transform: translateX(0);
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }
            .container {
                padding: 0 24px;
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .capability-grid {
                grid-template-columns: 1fr;
            }
            .kpi-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-inner {
                grid-template-columns: 1fr;
                padding: 32px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 32px;
            }
            .container {
                padding: 0 16px;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .kpi-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .flow-steps {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .cat-hero-inner {
                padding: 24px;
            }
            .cat-hero {
                min-height: 200px;
            }
            .filter-bar {
                gap: 8px;
                margin: 20px 0;
            }
            .filter-tag {
                padding: 6px 14px;
                font-size: 0.78rem;
                min-height: 36px;
            }
            .cta-form {
                padding: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .capability-big {
                padding: 20px;
            }
            .capability-mini {
                padding: 18px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .kpi-strip {
                grid-template-columns: 1fr;
            }
            .cat-hero-inner h1 {
                font-size: 1.35rem;
            }
            .cat-hero-inner {
                padding: 16px;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .cta-inner {
                padding: 20px 16px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }
        .body-locked {
            overflow: hidden;
        }

/* roulang page: category4 */
:root {
            --bg-base: #0D1117;
            --bg-panel: #151B23;
            --bg-card: #1B242E;
            --border-line: #2A3642;
            --accent-lime: #B7F04A;
            --accent-lime-hover: #C9FF5D;
            --accent-orange: #FF5C39;
            --accent-cyan: #3ED6E8;
            --accent-green: #2FD07B;
            --accent-yellow: #F4B740;
            --accent-red: #FF4D4F;
            --text-primary: #EDF2F7;
            --text-secondary: #9AA7B3;
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 44px rgba(0, 0, 0, 0.50);
            --space-section: 72px;
            --font-sans: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'Roboto Mono', 'DIN Alternate', monospace;
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-base);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
            margin: 0;
        }

        a, a:visited {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }

        [data-mono] {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }

        .section {
            padding: var(--space-section) 0;
            position: relative;
        }

        .section-header {
            margin-bottom: 36px;
            max-width: 780px;
        }

        .section-header h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            background: rgba(183, 240, 74, 0.1);
            color: var(--accent-lime);
            border: 1px solid rgba(183, 240, 74, 0.3);
            border-radius: var(--radius-btn);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.25s ease;
            position: relative;
            min-height: 48px;
            text-align: center;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--accent-lime);
            color: #0D1117;
            border: 1px solid var(--accent-lime);
        }

        .btn-primary:hover {
            background: var(--accent-lime-hover);
            border-color: var(--accent-lime-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(183, 240, 74, 0.25);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--text-primary);
        }

        .btn-secondary:hover {
            background: rgba(237, 242, 247, 0.08);
            border-color: #EDF2F7;
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .btn:disabled {
            opacity: 0.45;
            cursor: not-allowed;
            pointer-events: none;
        }

        .btn-success {
            background: var(--accent-green) !important;
            color: #fff !important;
            border-color: var(--accent-green) !important;
        }

        input[type="text"],
        input[type="tel"],
        input[type="email"],
        select,
        textarea {
            height: 48px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-input);
            padding: 0 16px;
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            width: 100%;
            box-sizing: border-box;
        }

        textarea {
            height: auto;
            min-height: 120px;
            padding: 14px 16px;
            resize: vertical;
        }

        input:focus, select:focus, textarea:focus {
            border-color: var(--accent-lime);
            box-shadow: 0 0 0 3px rgba(183, 240, 74, 0.18);
        }

        .form-error input,
        .form-error select,
        .form-error textarea {
            border-color: var(--accent-red);
            box-shadow: 0 0 0 3px rgba(255, 77, 79, 0.15);
        }

        .error-text {
            color: var(--accent-red);
            font-size: 0.8rem;
            margin-top: 6px;
            display: block;
        }

        /* 全局导航 - 左侧竖向 */
        .global-nav {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 256px;
            background: var(--bg-base);
            border-right: 1px solid var(--border-line);
            display: flex;
            flex-direction: column;
            z-index: 100;
            padding: 0;
            overflow-y: auto;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            height: 72px;
            padding: 0 20px;
            flex-shrink: 0;
            border-bottom: 1px solid var(--border-line);
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--accent-lime);
            color: #0D1117;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text-primary);
        }

        .nav-list {
            flex: 1;
            padding: 20px 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .nav-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            margin: 0 16px;
            border-radius: 8px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            font-weight: 500;
            position: relative;
            transition: all 0.2s ease;
        }

        .nav-list a:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }

        .nav-list a.active {
            background: var(--bg-panel);
            color: #fff;
            font-weight: 600;
        }

        .nav-list a.active::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 8px;
            bottom: 8px;
            width: 4px;
            background: var(--accent-lime);
            border-radius: 0 4px 4px 0;
        }

        .nav-list a.active .nav-icon svg {
            stroke: var(--accent-lime);
        }

        .nav-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            flex-shrink: 0;
        }

        .nav-icon svg {
            width: 18px;
            height: 18px;
            stroke: currentColor;
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .nav-status {
            flex-shrink: 0;
            padding: 16px;
            margin: 0 16px 16px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: 12px;
        }

        .status-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-green);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { box-shadow: 0 0 0 0 rgba(47, 208, 123, 0.5); }
            50% { box-shadow: 0 0 0 6px rgba(47, 208, 123, 0); }
        }

        .nav-status p {
            font-size: 0.78rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin: 0;
        }

        /* 主内容区偏移 */
        .main-wrapper {
            margin-left: 256px;
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .main-content {
            flex: 1;
        }

        /* 移动端顶部导航 */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-base);
            border-bottom: 1px solid var(--border-line);
            z-index: 200;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }

        .hamburger-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s ease;
        }

        .hamburger-btn:hover {
            background: var(--bg-card);
        }

        .hamburger-btn svg {
            width: 24px;
            height: 24px;
            stroke: var(--text-primary);
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
        }

        .mobile-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
        }

        .mobile-cta {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            background: var(--accent-lime);
            color: #0D1117;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.85rem;
            min-height: 44px;
            cursor: pointer;
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 190;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .drawer-overlay.active {
            opacity: 1;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 24px 0 0;
            font-size: 0.88rem;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--accent-green);
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--accent-lime);
        }

        .breadcrumb .separator {
            color: var(--border-line);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 600;
        }

        /* 分类头部 banner */
        .category-hero {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            margin: 24px 0 0;
            min-height: 320px;
            display: flex;
            align-items: center;
            background: var(--bg-panel);
        }

        .category-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            z-index: 0;
        }

        .category-hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.75) 0%, rgba(13, 17, 23, 0.9) 60%, #0D1117 100%);
        }

        .category-hero-content {
            position: relative;
            z-index: 1;
            padding: 56px 48px;
            max-width: 680px;
        }

        .category-hero-content h1 {
            font-size: clamp(2rem, 4.5vw, 3rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.15;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .category-hero-content .hero-sub {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 24px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* 分类标签行 */
        .filter-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
            align-items: center;
        }

        .filter-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 600;
            margin-right: 4px;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            border: 1px solid var(--border-line);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.2s ease;
            background: transparent;
            user-select: none;
            min-height: 44px;
        }

        .filter-tag:hover {
            border-color: var(--text-secondary);
            color: var(--text-primary);
            background: rgba(237, 242, 247, 0.05);
        }

        .filter-tag.active {
            background: var(--accent-green);
            border-color: var(--accent-green);
            color: #0D1117;
            font-weight: 700;
        }

        .filter-tag:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        /* 卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-line);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(47, 208, 123, 0.4);
        }

        .service-card .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-panel);
        }

        .service-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .service-card:hover .card-cover img {
            transform: scale(1.05);
        }

        .card-cover .cover-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(13, 17, 23, 0.8);
            border: 1px solid rgba(47, 208, 123, 0.5);
            color: var(--accent-green);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .service-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .service-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 8px;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .service-card .card-summary {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.55;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .service-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-line);
        }

        .card-meta .meta-stats {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        .card-meta .meta-stats span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .meta-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-green);
        }

        .card-meta .card-link {
            color: var(--accent-green);
            font-size: 0.85rem;
            font-weight: 600;
            transition: color 0.2s ease;
        }

        .card-meta .card-link:hover {
            color: var(--accent-lime);
        }

        /* 加载更多 */
        .load-more-row {
            display: flex;
            justify-content: flex-end;
            margin-top: 32px;
        }

        /* 流程步骤 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            position: relative;
            counter-increment: step;
        }

        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--accent-green);
            color: var(--accent-green);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.55;
            margin: 0;
        }

        /* 优势非对称布局 */
        .benefit-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 24px;
        }

        .benefit-large {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 280px;
            position: relative;
            overflow: hidden;
        }

        .benefit-large::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-green), var(--accent-lime), transparent);
        }

        .benefit-large h3 {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .benefit-large p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 16px;
        }

        .benefit-large .benefit-stats {
            display: flex;
            gap: 32px;
            margin-top: 8px;
            flex-wrap: wrap;
        }

        .benefit-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .benefit-stat .stat-value {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--accent-green);
            letter-spacing: -0.02em;
        }

        .benefit-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        .benefit-small-stack {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .benefit-small {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .benefit-small:hover {
            border-color: rgba(47, 208, 123, 0.4);
            box-shadow: var(--shadow-card);
        }

        .benefit-small h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .benefit-small p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin: 0;
        }

        /* 适用场景 */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .scenario-item {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: all 0.3s ease;
        }

        .scenario-item:hover {
            border-color: rgba(47, 208, 123, 0.4);
            transform: translateY(-2px);
        }

        .scenario-item .scenario-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(47, 208, 123, 0.1);
            border: 1px solid rgba(47, 208, 123, 0.3);
            margin-bottom: 16px;
        }

        .scenario-item .scenario-icon svg {
            width: 22px;
            height: 22px;
            stroke: var(--accent-green);
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .scenario-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .scenario-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.55;
            margin: 0;
        }

        /* FAQ 手风琴 */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
        }

        .faq-item {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color 0.2s ease;
        }

        .faq-item.open {
            border-color: rgba(183, 240, 74, 0.5);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            transition: background 0.2s ease;
            user-select: none;
            min-height: 48px;
            gap: 16px;
        }

        .faq-question:hover {
            background: var(--bg-card);
        }

        .faq-question h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0;
            line-height: 1.4;
        }

        .faq-question .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            flex-shrink: 0;
            transition: all 0.2s ease;
        }

        .faq-question .faq-icon svg {
            width: 14px;
            height: 14px;
            stroke: var(--text-secondary);
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            transition: transform 0.2s ease;
        }

        .faq-item.open .faq-question .faq-icon {
            background: rgba(183, 240, 74, 0.1);
            border-color: var(--accent-lime);
        }

        .faq-item.open .faq-question .faq-icon svg {
            transform: rotate(45deg);
            stroke: var(--accent-lime);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        /* CTA 表单 */
        .cta-section {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            position: relative;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
        }

        .cta-info {
            padding: 48px;
            background: var(--bg-card);
            border-right: 1px solid var(--border-line);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .cta-info h3 {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .cta-info p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .cta-trust {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .trust-point {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.92rem;
            color: var(--text-primary);
        }

        .trust-point svg {
            width: 18px;
            height: 18px;
            stroke: var(--accent-green);
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            flex-shrink: 0;
        }

        .cta-form {
            padding: 48px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .form-row {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-row label {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .form-row select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239AA7B3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            padding-right: 40px;
        }

        .form-submit-row {
            margin-top: 8px;
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-base);
            border-top: 1px solid var(--border-line);
            padding: 48px 0 24px;
            margin-top: var(--space-section);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-top: 12px;
            max-width: 300px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
        }

        .footer-column h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-column ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-column ul li a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

        .footer-column ul li a:hover {
            color: var(--accent-lime);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--border-line);
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        .beian-info {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links {
            display: flex;
            gap: 16px;
        }

        .footer-links a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: var(--accent-lime);
        }

        /* 响应式设计 */
        @media (max-width: 1024px) {
            :root { --space-section: 48px; }
            .global-nav { display: none; }
            .main-wrapper { margin-left: 0; }
            .mobile-header { display: flex; }
            .drawer-overlay { display: block; }
            body.drawer-open { overflow: hidden; }
            .mobile-drawer {
                position: fixed;
                top: 0;
                left: 0;
                bottom: 0;
                width: 320px;
                background: var(--bg-base);
                border-right: 1px solid var(--border-line);
                z-index: 210;
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                display: flex;
                flex-direction: column;
                padding: 16px;
            }
            .mobile-drawer.open { transform: translateX(0); }
            .mobile-drawer .nav-brand { height: auto; padding: 0 8px 16px; border-bottom: 1px solid var(--border-line); }
            .mobile-drawer .nav-list { padding: 16px 0; gap: 2px; }
            .mobile-drawer .nav-list a { margin: 0; }
            .mobile-drawer .nav-list a.active::before { left: -8px; }
            .mobile-drawer .nav-status { margin: 0; }
            .mobile-drawer .drawer-close {
                position: absolute;
                top: 12px;
                right: 12px;
                width: 40px;
                height: 40px;
                display: flex;
                align-items: center;
                justify-content: center;
                border-radius: 50%;
                cursor: pointer;
                background: var(--bg-card);
                border: 1px solid var(--border-line);
            }
            .mobile-drawer .drawer-close svg {
                width: 20px;
                height: 20px;
                stroke: var(--text-primary);
                fill: none;
                stroke-width: 2;
                stroke-linecap: round;
            }
            .container { padding: 0 24px; }
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .benefit-grid { grid-template-columns: 1fr; }
            .scenario-grid { grid-template-columns: repeat(2, 1fr); }
            .cta-grid { grid-template-columns: 1fr; }
            .cta-info { border-right: none; border-bottom: 1px solid var(--border-line); }
            .category-hero-content { padding: 40px 32px; }
        }

        @media (max-width: 768px) {
            :root { --space-section: 32px; }
            .container { padding: 0 16px; }
            .card-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .scenario-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-bottom { flex-direction: column; align-items: flex-start; }
            .category-hero { min-height: auto; }
            .category-hero-content { padding: 32px 20px; }
            .category-hero-content h1 { font-size: 1.75rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; }
            .filter-row { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 8px; }
            .filter-tag { flex-shrink: 0; }
            .load-more-row { justify-content: center; }
            .benefit-large { padding: 28px 24px; }
            .benefit-large .benefit-stats { gap: 20px; }
            .cta-info, .cta-form { padding: 32px 24px; }
        }

        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; }
            .beian-info { flex-direction: column; gap: 6px; }
            .card-meta { flex-direction: column; gap: 8px; align-items: flex-start; }
        }

/* roulang page: category3 */
:root {
            --bg-base: #0D1117;
            --bg-panel: #151B23;
            --bg-card: #1B242E;
            --border-line: #2A3642;
            --accent-lime: #B7F04A;
            --accent-lime-hover: #C9FF5D;
            --accent-orange: #FF5C39;
            --accent-cyan: #3ED6E8;
            --accent-green: #2FD07B;
            --accent-yellow: #F4B740;
            --accent-red: #FF4D4F;
            --text-primary: #EDF2F7;
            --text-secondary: #9AA7B3;
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 44px rgba(0, 0, 0, 0.50);
            --space-section: 72px;
            --font-sans: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'Roboto Mono', 'DIN Alternate', monospace;
            --page-accent: var(--accent-cyan);
            --page-accent-rgb: 62, 214, 232;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            font-size: 16px;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-base);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }
        a,
        a:visited {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }
        [data-mono] {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }
        .section {
            padding: var(--space-section) 0;
            position: relative;
        }
        .section-header {
            margin-bottom: 36px;
            max-width: 780px;
        }
        .section-header h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            background: rgba(var(--page-accent-rgb), 0.1);
            color: var(--page-accent);
            border: 1px solid rgba(var(--page-accent-rgb), 0.3);
            border-radius: var(--radius-btn);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.25s ease;
            position: relative;
            min-height: 48px;
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent-lime);
            color: #0D1117;
            border: 1px solid var(--accent-lime);
        }
        .btn-primary:hover {
            background: var(--accent-lime-hover);
            border-color: var(--accent-lime-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(183, 240, 74, 0.25);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--text-primary);
        }
        .btn-secondary:hover {
            background: rgba(237, 242, 247, 0.08);
            border-color: #EDF2F7;
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        .btn:disabled {
            opacity: 0.45;
            cursor: not-allowed;
            pointer-events: none;
        }
        .btn-loading {
            color: transparent !important;
        }
        .btn-loading::after {
            content: '';
            position: absolute;
            width: 18px;
            height: 18px;
            border: 2px solid transparent;
            border-top-color: currentColor;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }
        .btn-success {
            background: var(--accent-green) !important;
            color: #fff !important;
            border-color: var(--accent-green) !important;
        }
        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }
        input[type="text"],
        input[type="tel"],
        input[type="email"],
        select,
        textarea {
            height: 48px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-input);
            padding: 0 16px;
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            width: 100%;
        }
        textarea {
            height: auto;
            min-height: 120px;
            padding: 14px 16px;
            resize: vertical;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--accent-lime);
            box-shadow: 0 0 0 3px rgba(183, 240, 74, 0.18);
        }
        input.error,
        select.error,
        textarea.error {
            border-color: var(--accent-red);
            box-shadow: 0 0 0 3px rgba(255, 77, 79, 0.12);
        }
        .form-error-message {
            color: var(--accent-red);
            font-size: 0.8rem;
            margin-top: 4px;
            display: none;
        }
        .form-error-message.show {
            display: block;
        }
        .global-nav {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 256px;
            background: var(--bg-base);
            border-right: 1px solid var(--border-line);
            display: flex;
            flex-direction: column;
            z-index: 100;
        }
        .nav-brand {
            height: 72px;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0 24px;
            border-bottom: 1px solid var(--border-line);
            flex-shrink: 0;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--accent-lime);
            color: #0D1117;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .logo-text {
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .nav-list {
            flex: 1;
            padding: 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
        }
        .nav-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.2s ease;
            position: relative;
        }
        .nav-list a:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }
        .nav-list a.active {
            background: var(--bg-panel);
            color: var(--text-primary);
            box-shadow: inset 4px 0 0 var(--accent-lime);
        }
        .nav-list a .nav-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .nav-list a .nav-icon svg {
            width: 100%;
            height: 100%;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .nav-status {
            margin: 16px;
            padding: 16px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .status-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-green);
            box-shadow: 0 0 8px var(--accent-green);
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
        }
        .nav-status p {
            font-size: 0.78rem;
            line-height: 1.5;
            margin: 0;
        }
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-base);
            border-bottom: 1px solid var(--border-line);
            z-index: 99;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }
        .mobile-header .logo-text {
            font-size: 1rem;
        }
        .mobile-header .btn-mobile-cta {
            background: var(--accent-lime);
            color: #0D1117;
            border-radius: 999px;
            padding: 8px 16px;
            font-size: 0.82rem;
            font-weight: 700;
            cursor: pointer;
            min-height: 36px;
            display: inline-flex;
            align-items: center;
            border: 1px solid var(--accent-lime);
        }
        .hamburger {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border-radius: 8px;
            background: transparent;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            position: relative;
            transition: background 0.2s ease;
        }
        .hamburger span::before,
        .hamburger span::after {
            content: '';
            position: absolute;
            left: 0;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            transition: transform 0.25s ease;
        }
        .hamburger span::before {
            top: -7px;
        }
        .hamburger span::after {
            top: 7px;
        }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 98;
        }
        .mobile-nav-drawer {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 320px;
            background: var(--bg-base);
            z-index: 99;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            border-right: 1px solid var(--border-line);
            display: flex;
            flex-direction: column;
        }
        .mobile-nav-drawer.open {
            transform: translateX(0);
        }
        .mobile-nav-header {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            border-bottom: 1px solid var(--border-line);
        }
        .mobile-nav-close {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 1.2rem;
            color: var(--text-primary);
            background: transparent;
            border: none;
        }
        .main-wrapper {
            margin-left: 256px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .main-content {
            flex: 1;
        }
        .site-footer {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-line);
            padding: 48px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-top: 12px;
            max-width: 300px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-primary);
        }
        .footer-column h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-column ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-column ul a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .footer-column ul a:hover {
            color: var(--accent-lime);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-line);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        .beian-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-links {
            display: flex;
            gap: 16px;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.8rem;
        }
        .footer-links a:hover {
            color: var(--accent-lime);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--page-accent);
        }
        .breadcrumb .separator {
            color: var(--border-line);
        }
        .breadcrumb .current {
            color: var(--page-accent);
            font-weight: 600;
        }
        .page-banner {
            position: relative;
            padding: 56px 0 48px;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            border-radius: 0;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 17, 23, 0.92) 0%, rgba(13, 17, 23, 0.72) 50%, rgba(13, 17, 23, 0.88) 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner h1 {
            font-size: clamp(1.75rem, 4vw, 2.75rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .page-banner .banner-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.6;
        }
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin: 32px 0;
        }
        .filter-tag {
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border-line);
            background: transparent;
            color: var(--text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.25s ease;
            min-height: 40px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .filter-tag:hover {
            border-color: var(--page-accent);
            color: var(--text-primary);
            background: rgba(var(--page-accent-rgb), 0.08);
        }
        .filter-tag.active {
            background: var(--page-accent);
            color: #0D1117;
            border-color: var(--page-accent);
            font-weight: 700;
        }
        .filter-tag:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        .result-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .result-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-line);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .result-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(var(--page-accent-rgb), 0.4);
        }
        .result-card .card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-panel);
        }
        .result-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .result-card:hover .card-image img {
            transform: scale(1.05);
        }
        .result-card .card-image .image-fallback {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 0.8rem;
            background: var(--bg-panel);
        }
        .result-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .result-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .result-card .card-summary {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .result-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: auto;
        }
        .result-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .result-card .card-tag {
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(var(--page-accent-rgb), 0.1);
            color: var(--page-accent);
            font-size: 0.72rem;
            font-weight: 600;
            border: 1px solid rgba(var(--page-accent-rgb), 0.25);
        }
        .result-card .card-link {
            color: var(--page-accent);
            font-size: 0.85rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s ease;
            white-space: nowrap;
        }
        .result-card .card-link:hover {
            color: var(--text-primary);
        }
        .pagination-wrapper {
            display: flex;
            justify-content: flex-end;
            margin-top: 32px;
        }
        .comparison-section {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            overflow: hidden;
        }
        .comparison-table-wrapper {
            overflow-x: auto;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 720px;
        }
        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-line);
            font-size: 0.9rem;
        }
        .comparison-table th {
            background: var(--bg-base);
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .comparison-table td {
            color: var(--text-secondary);
        }
        .comparison-table td.highlight-cell {
            color: var(--accent-orange);
            font-weight: 700;
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }
        .comparison-table .row-label {
            color: var(--text-primary);
            font-weight: 600;
        }
        .benefit-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .benefit-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 16px;
            background: var(--bg-card);
            border-radius: 12px;
            border: 1px solid var(--border-line);
        }
        .benefit-item .benefit-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            color: var(--page-accent);
        }
        .benefit-item .benefit-icon svg {
            width: 100%;
            height: 100%;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .benefit-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .benefit-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }
        .faq-item.open {
            border-color: rgba(var(--page-accent-rgb), 0.5);
        }
        .faq-question {
            width: 100%;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            background: transparent;
            border: none;
            text-align: left;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--page-accent);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            position: relative;
            transition: transform 0.2s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: currentColor;
            border-radius: 2px;
        }
        .faq-icon::before {
            width: 100%;
            height: 2px;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
        }
        .faq-icon::after {
            width: 2px;
            height: 100%;
            left: 50%;
            top: 0;
            transform: translateX(-50%);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer p {
            padding: 0 20px 18px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .cta-section {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 48px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        .cta-info h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-info p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 20px;
            max-width: 420px;
        }
        .cta-trust-points {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .cta-trust-point {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .cta-trust-point svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            fill: none;
            stroke: var(--accent-green);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .cta-form .form-row {
            margin-bottom: 16px;
        }
        .cta-form label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .cta-form .form-submit {
            margin-top: 20px;
        }
        .cta-form .btn {
            width: 100%;
        }
        .scroll-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.25s ease;
            z-index: 90;
            box-shadow: var(--shadow-card);
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            border-color: var(--page-accent);
            background: var(--bg-panel);
        }
        .scroll-top svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .loading-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border-line);
            background: transparent;
            color: var(--text-primary);
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            min-height: 48px;
        }
        .loading-more:hover {
            border-color: var(--page-accent);
            background: rgba(var(--page-accent-rgb), 0.08);
        }
        .loading-more:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        .loading-more:disabled {
            opacity: 0.45;
            cursor: not-allowed;
            pointer-events: none;
        }

        @media (max-width: 1024px) {
            .global-nav {
                display: none;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .mobile-nav-overlay.active {
                display: block;
            }
            .main-content {
                padding-top: 56px;
            }
            :root {
                --space-section: 48px;
            }
            .cta-section {
                grid-template-columns: 1fr;
                padding: 32px;
            }
            .result-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 32px;
            }
            .container {
                padding: 0 20px;
            }
            .result-grid {
                grid-template-columns: 1fr;
            }
            .benefit-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .cta-section {
                padding: 24px;
                gap: 24px;
            }
            .page-banner {
                padding: 40px 0 36px;
            }
            .filter-tags {
                gap: 8px;
            }
            .filter-tag {
                padding: 8px 14px;
                font-size: 0.8rem;
                min-height: 36px;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 12px 14px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .beian-info {
                flex-direction: column;
                gap: 4px;
            }
            .cta-section {
                padding: 20px;
            }
            .result-card .card-body {
                padding: 16px;
            }
            .scroll-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
            }
            .nav-status {
                display: none;
            }
        }

/* roulang page: category5 */
:root {
            --bg-base: #0D1117;
            --bg-panel: #151B23;
            --bg-card: #1B242E;
            --border-line: #2A3642;
            --accent-lime: #B7F04A;
            --accent-lime-hover: #C9FF5D;
            --accent-orange: #FF5C39;
            --accent-cyan: #3ED6E8;
            --accent-green: #2FD07B;
            --accent-yellow: #F4B740;
            --accent-red: #FF4D4F;
            --text-primary: #EDF2F7;
            --text-secondary: #9AA7B3;
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 18px 44px rgba(0, 0, 0, 0.50);
            --space-section: 72px;
            --font-sans: 'HarmonyOS Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'Roboto Mono', 'DIN Alternate', monospace;
            --page-accent: var(--accent-yellow);
            --page-accent-rgb: 244, 183, 64;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-base);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        a,
        a:visited {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }

        [data-mono] {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }

        .section {
            padding: var(--space-section) 0;
            position: relative;
        }

        .section-header {
            margin-bottom: 40px;
            max-width: 780px;
        }

        .section-header h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 14px;
            color: var(--text-primary);
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            background: rgba(var(--page-accent-rgb), 0.1);
            color: var(--page-accent);
            border: 1px solid rgba(var(--page-accent-rgb), 0.3);
            border-radius: var(--radius-btn);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.25s ease;
            position: relative;
            min-height: 48px;
            text-align: center;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--accent-lime);
            color: #0D1117;
            border: 1px solid var(--accent-lime);
        }

        .btn-primary:hover {
            background: var(--accent-lime-hover);
            border-color: var(--accent-lime-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(183, 240, 74, 0.25);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--text-primary);
        }

        .btn-secondary:hover {
            background: rgba(237, 242, 247, 0.08);
            border-color: #EDF2F7;
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .btn:disabled {
            opacity: 0.45;
            cursor: not-allowed;
            pointer-events: none;
        }

        input[type="text"],
        input[type="tel"],
        input[type="email"],
        select,
        textarea {
            height: 48px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-input);
            padding: 0 16px;
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            width: 100%;
        }

        textarea {
            height: auto;
            min-height: 100px;
            padding-top: 12px;
            resize: vertical;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--accent-lime);
            box-shadow: 0 0 0 3px rgba(183, 240, 74, 0.18);
        }

        .form-error {
            border-color: var(--accent-red) !important;
            box-shadow: 0 0 0 3px rgba(255, 77, 79, 0.15) !important;
        }

        .error-text {
            color: var(--accent-red);
            font-size: 0.8rem;
            margin-top: 6px;
            display: none;
        }

        .error-text.visible {
            display: block;
        }

        /* 左侧竖向导航 */
        .global-nav {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 256px;
            background: var(--bg-base);
            border-right: 1px solid var(--border-line);
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding: 0;
            transition: transform 0.3s ease;
        }

        .nav-brand {
            height: 72px;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 20px;
            border-bottom: 1px solid var(--border-line);
            flex-shrink: 0;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--accent-lime);
            color: #0D1117;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.2rem;
            font-weight: 800;
            letter-spacing: 0.04em;
            color: var(--text-primary);
        }

        .nav-list {
            flex: 1;
            overflow-y: auto;
            padding: 16px 0;
        }

        .nav-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 16px;
            height: 44px;
            border-radius: 8px;
            margin: 4px 16px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            position: relative;
            transition: all 0.2s ease;
        }

        .nav-list a:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }

        .nav-list a.active {
            background: var(--bg-panel);
            color: var(--text-primary);
            font-weight: 600;
        }

        .nav-list a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 4px;
            border-radius: 0 4px 4px 0;
            background: var(--page-accent);
        }

        .nav-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            flex-shrink: 0;
        }

        .nav-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .nav-status {
            margin: 16px;
            padding: 16px;
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            flex-shrink: 0;
        }

        .status-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-green);
            display: inline-block;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }

        .nav-status p {
            font-size: 0.78rem;
            color: var(--text-secondary);
            margin: 0;
        }

        /* 移动端抽屉遮罩 */
        .nav-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 90;
            display: none;
        }

        .nav-overlay.active {
            display: block;
        }

        /* 主内容区 */
        .main-content {
            margin-left: 256px;
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        /* 移动端顶部导航 */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-base);
            border-bottom: 1px solid var(--border-line);
            z-index: 80;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
        }

        .hamburger {
            width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: var(--text-primary);
            cursor: pointer;
            flex-shrink: 0;
        }

        .hamburger svg {
            width: 22px;
            height: 22px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
        }

        .mobile-logo {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.03em;
        }

        .mobile-cta {
            margin-left: auto;
            font-size: 0.8rem;
            padding: 8px 16px;
            min-height: 36px;
            border-radius: var(--radius-btn);
            background: var(--accent-lime);
            color: #0D1117;
            font-weight: 600;
        }

        /* 面包屑 */
        .breadcrumb {
            padding: 24px 0 0;
            font-size: 0.88rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--page-accent);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--text-primary);
        }

        .breadcrumb .separator {
            color: var(--border-line);
        }

        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }

        /* 分类页Hero */
        .cat-hero {
            position: relative;
            padding: 56px 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-card);
            overflow: hidden;
            margin-top: 24px;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 17, 23, 0.92) 0%, rgba(13, 17, 23, 0.75) 50%, rgba(21, 27, 35, 0.88) 100%);
        }

        .cat-hero-content {
            position: relative;
            z-index: 1;
            padding: 48px 48px;
            max-width: 720px;
        }

        .cat-hero h1 {
            font-size: clamp(2rem, 4.5vw, 3rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .cat-hero p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.6;
            max-width: 560px;
            margin-bottom: 24px;
        }

        .cat-hero .btn {
            background: var(--page-accent);
            color: #0D1117;
            border: 1px solid var(--page-accent);
        }

        .cat-hero .btn:hover {
            background: #FFC658;
            border-color: #FFC658;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(var(--page-accent-rgb), 0.3);
        }

        /* 筛选标签行 */
        .filter-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin: 28px 0;
        }

        .filter-tag {
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border-line);
            background: transparent;
            color: var(--text-secondary);
            font-size: 0.88rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            min-height: 36px;
            display: inline-flex;
            align-items: center;
        }

        .filter-tag:hover {
            border-color: var(--page-accent);
            color: var(--text-primary);
        }

        .filter-tag.active {
            background: var(--page-accent);
            color: #0D1117;
            border-color: var(--page-accent);
            font-weight: 600;
        }

        /* 卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(var(--page-accent-rgb), 0.35);
        }

        .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #0D1117;
        }

        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .content-card:hover .card-cover img {
            transform: scale(1.05);
        }

        .card-cover .cover-fallback {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            background: #0D1117;
            z-index: 0;
        }

        .card-cover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.45), transparent);
        }

        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            padding: 4px 12px;
            background: var(--page-accent);
            color: #0D1117;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: var(--radius-btn);
        }

        .card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-body .card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex: 1;
        }

        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-line);
        }

        .card-meta {
            font-size: 0.8rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .card-link {
            color: var(--page-accent);
            font-size: 0.88rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s ease;
        }

        .card-link:hover {
            color: var(--text-primary);
        }

        /* 大数据面板 */
        .metrics-panel {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            margin-top: 40px;
            box-shadow: 0 0 0 1px rgba(var(--page-accent-rgb), 0.15);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-item {
            text-align: center;
            padding: 16px;
            background: var(--bg-card);
            border-radius: 12px;
            border: 1px solid var(--border-line);
        }

        .metric-item .metric-value {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 700;
            color: var(--page-accent);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .metric-item .metric-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-top: 6px;
            font-weight: 500;
        }

        .metric-item .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-top: 8px;
            color: var(--accent-green);
        }

        /* FQA 手风琴 */
        .faq-section {
            background: var(--bg-panel);
            border-radius: var(--radius-card);
            padding: 48px;
            margin-top: 48px;
            border: 1px solid var(--border-line);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--border-line);
            border-radius: 12px;
            overflow: hidden;
            background: var(--bg-card);
            transition: all 0.2s ease;
        }

        .faq-item.open {
            border-color: var(--page-accent);
            box-shadow: 0 0 0 1px rgba(var(--page-accent-rgb), 0.2);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            cursor: pointer;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            transition: color 0.2s ease;
            background: none;
            border: none;
            min-height: 56px;
        }

        .faq-question:hover {
            color: var(--page-accent);
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--border-line);
            color: var(--text-secondary);
            font-size: 1.2rem;
            transition: transform 0.2s ease, color 0.2s ease, border-color 0.2s ease;
            line-height: 1;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--page-accent);
            border-color: var(--page-accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin: 0;
        }

        /* CTA表单 */
        .cta-section {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            margin-top: 48px;
        }

        .cta-info {
            padding: 48px 40px;
            background: linear-gradient(135deg, rgba(var(--page-accent-rgb), 0.08), rgba(var(--page-accent-rgb), 0.02));
            border-right: 1px solid var(--border-line);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .cta-info h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }

        .cta-info p {
            color: var(--text-secondary);
            font-size: 0.98rem;
            line-height: 1.6;
            margin-bottom: 24px;
        }

        .trust-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .trust-points li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--text-primary);
        }

        .trust-points li::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--page-accent);
            flex-shrink: 0;
        }

        .cta-form-wrap {
            padding: 48px 40px;
        }

        .cta-form-wrap h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--text-primary);
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .form-group label .required {
            color: var(--accent-red);
            margin-left: 2px;
        }

        .form-actions {
            display: flex;
            justify-content: flex-end;
            margin-top: 24px;
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-line);
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-brand .footer-logo .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            font-size: 0.85rem;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .footer-column h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .footer-column ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-column ul a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

        .footer-column ul a:hover {
            color: var(--page-accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--border-line);
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        .beian-info {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links {
            display: flex;
            gap: 16px;
        }

        .footer-links a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: var(--page-accent);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .global-nav {
                transform: translateX(-100%);
            }

            .global-nav.open {
                transform: translateX(0);
                box-shadow: 4px 0 24px rgba(0, 0, 0, 0.45);
            }

            .main-content {
                margin-left: 0;
            }

            .mobile-header {
                display: flex;
            }

            .main-content {
                padding-top: 56px;
            }

            .container {
                padding: 0 20px;
            }

            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .cta-section {
                grid-template-columns: 1fr;
            }

            .cta-info {
                border-right: none;
                border-bottom: 1px solid var(--border-line);
            }

            :root {
                --space-section: 48px;
            }
        }

        @media (max-width: 768px) {
            .card-grid {
                grid-template-columns: 1fr;
            }

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .faq-section {
                padding: 32px 20px;
            }

            .faq-question {
                padding: 16px 16px;
                font-size: 0.95rem;
            }

            .faq-answer {
                padding: 0 16px;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }

            .cta-info,
            .cta-form-wrap {
                padding: 32px 20px;
            }

            :root {
                --space-section: 32px;
            }

            .cat-hero-content {
                padding: 32px 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }

            .metrics-grid {
                grid-template-columns: 1fr;
            }

            .filter-row {
                gap: 8px;
            }

            .filter-tag {
                padding: 6px 14px;
                font-size: 0.8rem;
                min-height: 32px;
            }

            .cat-hero h1 {
                font-size: 1.7rem;
            }

            .btn {
                width: 100%;
            }

            .form-actions .btn {
                width: 100%;
            }

            .card-body {
                padding: 16px 16px 20px;
            }
        }