/* roulang page: index */
:root {
            --primary: #1D5E8F;
            --primary-deep: #103F61;
            --primary-light-bg: #E8F1FA;
            --accent-orange: #F2A33C;
            --data-teal: #17B3A3;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #172633;
            --text-secondary: #5B6E7E;
            --border: #D9E4EF;
            --footer-bg: #153450;
            --radius-lg: 16px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(23, 60, 95, 0.08);
            --shadow-card-hover: 0 18px 40px rgba(23, 60, 95, 0.14);
            --transition: all 0.25s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Roboto Condensed", "DIN Alternate", "Barlow", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-cn);
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.8;
            font-size: 16px;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }

        button,
        input,
        textarea,
        select {
            font-family: var(--font-cn);
            font-size: 16px;
        }

        button:focus,
        input:focus,
        textarea:focus,
        select:focus,
        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .site-header {
            background: rgba(255, 255, 255, 0.94);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 999;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            min-height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .grid-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            border: 1px solid var(--border);
            background: var(--surface);
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-chip:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary);
            color: var(--primary-deep);
        }

        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: #e08e2b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(242, 163, 60, 0.3);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 9px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary-deep);
            color: var(--primary-deep);
            transform: translateY(-2px);
        }

        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary-deep);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 11px 22px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-dark:hover {
            background: #0c2d47;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(16, 63, 97, 0.25);
        }

        /* Hamburger */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: transparent;
            border: none;
            flex-shrink: 0;
        }

        .menu-toggle span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--primary-deep);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* Hero */
        .hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 480px;
            display: flex;
            align-items: center;
            padding: 60px 0;
            isolation: isolate;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(16, 63, 97, 0.88) 0%, rgba(29, 94, 143, 0.65) 55%, rgba(29, 94, 143, 0.35) 100%);
            z-index: -1;
        }

        .hero .grid-container {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 40px;
            align-items: center;
            width: 100%;
        }

        .hero-content {
            color: #fff;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        .hero-content h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 16px;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .hero-content .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            max-width: 620px;
            margin-bottom: 28px;
        }

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

        .hero-cta-group .btn-primary {
            font-size: 16px;
            padding: 13px 28px;
        }

        .hero-cta-group .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
            border-radius: var(--radius-sm);
            padding: 12px 26px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
        }

        .hero-cta-group .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-data-card {
            background: rgba(255, 255, 255, 0.95);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
        }

        .hero-data-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--primary-deep);
            margin: 0 0 16px;
        }

        .hero-stat-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }

        .hero-stat-row:last-child {
            border-bottom: none;
        }

        .hero-stat-row .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        .hero-stat-row .stat-value {
            font-family: var(--font-num);
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
        }

        .hero-stat-row .stat-value.orange {
            color: var(--accent-orange);
        }

        .hero-stat-row .stat-value.teal {
            color: var(--data-teal);
        }

        /* Section Base */
        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-title-group {
            margin-bottom: 40px;
        }

        .section-title-group .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-orange);
            letter-spacing: 2px;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .section-title-group h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-deep);
            line-height: 1.3;
            margin: 0 0 12px;
        }

        .section-title-group .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin: 0;
        }

        /* Metrics Dashboard */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--primary-light-bg);
        }

        .metric-card .metric-value {
            font-family: var(--font-num);
            font-size: 38px;
            font-weight: 700;
            color: var(--primary-deep);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .metric-card .metric-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .metric-card .metric-trend {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .metric-card .metric-trend.up {
            color: var(--data-teal);
        }

        .metric-card .metric-trend.hot {
            color: var(--accent-orange);
        }

        .metric-bars {
            display: flex;
            align-items: flex-end;
            gap: 4px;
            height: 40px;
            margin-top: 12px;
        }

        .metric-bars .bar {
            flex: 1;
            background: var(--primary-light-bg);
            border-radius: 4px 4px 0 0;
            min-height: 8px;
            transition: var(--transition);
        }

        .metric-bars .bar.filled {
            background: var(--primary);
        }

        .metric-bars .bar.accent {
            background: var(--accent-orange);
        }

        .metric-bars .bar.teal {
            background: var(--data-teal);
        }

        /* Services Matrix */
        .services-matrix {
            display: grid;
            grid-template-columns: 1fr 1fr 0.9fr;
            grid-template-rows: auto auto;
            gap: 24px;
        }

        .service-card-large {
            grid-row: span 1;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .service-card-large:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--primary-light-bg);
        }

        .service-card-large .service-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
        }

        .service-card-large h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 10px;
        }

        .service-card-large p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 16px;
        }

        .service-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .service-link:hover {
            color: var(--primary-deep);
            gap: 10px;
        }

        .service-card-side {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

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

        .service-card-side h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 10px;
        }

        .service-card-side p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 14px;
        }

        .service-list-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }

        .service-list-item:last-child {
            border-bottom: none;
        }

        .service-list-item .list-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-orange);
            flex-shrink: 0;
            margin-top: 8px;
        }

        .service-list-item .list-text {
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }

        /* Comparison */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: stretch;
        }

        .comparison-panel {
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border);
        }

        .comparison-panel.old-state {
            background: #F0F4F8;
            border-color: #D0DCE8;
        }

        .comparison-panel.new-state {
            background: var(--primary-light-bg);
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
        }

        .comparison-panel h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-panel.old-state h3 {
            color: #6B7F92;
        }

        .comparison-panel.new-state h3 {
            color: var(--primary-deep);
        }

        .comparison-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid rgba(217, 228, 239, 0.7);
            gap: 12px;
        }

        .comparison-row:last-child {
            border-bottom: none;
        }

        .comparison-row .comp-label {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
        }

        .comparison-row .comp-value {
            font-size: 14px;
            font-weight: 600;
            text-align: right;
        }

        .comparison-panel.old-state .comp-value {
            color: #6B7F92;
        }

        .comparison-panel.new-state .comp-value {
            color: var(--data-teal);
        }

        .comp-icon {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .comp-icon.check {
            background: var(--data-teal);
            color: #fff;
        }

        .comp-icon.cross {
            background: #B0C0D0;
            color: #fff;
        }

        /* Brand Intro */
        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .brand-intro .brand-img {
            border-radius: var(--radius-lg);
            object-fit: cover;
            width: 100%;
            height: 320px;
            box-shadow: var(--shadow-card);
        }

        .brand-intro-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 16px;
        }

        .brand-intro-content p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .brand-intro-content .brand-highlight {
            background: var(--primary-light-bg);
            border-left: 4px solid var(--primary);
            padding: 14px 18px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-size: 15px;
            color: var(--primary-deep);
            font-weight: 500;
            margin-top: 8px;
        }

        /* News */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .news-featured {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            grid-row: span 2;
            transition: var(--transition);
        }

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

        .news-featured .news-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .news-featured .news-body {
            padding: 24px;
        }

        .news-date {
            font-size: 13px;
            color: var(--text-secondary);
            font-family: var(--font-num);
            margin-bottom: 8px;
        }

        .news-featured h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .news-featured p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 16px;
        }

        .news-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

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

        .news-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 8px;
            line-height: 1.5;
        }

        .news-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 12px;
        }

        .news-read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
        }

        .news-read-more:hover {
            color: var(--primary-deep);
            gap: 10px;
        }

        /* Deep Content */
        .deep-content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .deep-article {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

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

        .deep-article h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 12px;
        }

        .deep-article p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 12px;
        }

        .deep-article .deep-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin: 12px 0 16px;
        }

        .deep-article .deep-list {
            list-style: none;
            margin: 0 0 12px;
            padding: 0;
        }

        .deep-article .deep-list li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
            color: var(--text);
            display: flex;
            gap: 8px;
            align-items: flex-start;
        }

        .deep-article .deep-list li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-orange);
            flex-shrink: 0;
            margin-top: 10px;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light-bg);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary-deep);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            gap: 12px;
            transition: var(--transition);
        }

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

        .faq-icon {
            font-size: 22px;
            font-weight: 300;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* Conversion Form */
        .conversion-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .conversion-benefits {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .conversion-benefits h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 8px;
        }

        .conversion-benefits>p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 12px;
        }

        .benefit-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .benefit-item .benefit-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .benefit-item .benefit-text {
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }

        .form-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
        }

        .form-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 20px;
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--text);
            background: #FAFCFE;
            transition: var(--transition);
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(29, 94, 143, 0.15);
            background: #fff;
        }

        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }

        .form-submit {
            width: 100%;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 14px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
        }

        .form-submit:hover {
            background: #e08e2b;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(242, 163, 60, 0.3);
        }

        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }

        .site-footer .grid-container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 30px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 18px 0;
            text-align: center;
        }

        .footer-bottom .grid-container {
            display: flex;
            flex-direction: column;
            gap: 6px;
            align-items: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            margin: 0;
        }

        .footer-bottom .footer-links {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            display: flex;
            gap: 6px;
            align-items: center;
            flex-wrap: wrap;
            justify-content: center;
        }

        .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero .grid-container {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero-data-card {
                max-width: 480px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-matrix {
                grid-template-columns: 1fr 1fr;
            }
            .service-card-side {
                grid-column: span 2;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .brand-intro {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .news-featured {
                grid-row: span 1;
            }
            .deep-content-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .conversion-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .site-footer .grid-container {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .site-header .grid-container {
                flex-wrap: wrap;
                gap: 12px;
                padding: 10px 16px;
            }
            .main-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                padding-bottom: 4px;
            }
            .nav-chip {
                padding: 7px 13px;
                font-size: 13px;
            }
            .header-cta {
                margin-left: auto;
            }
            .section {
                padding: 48px 0;
            }
            .section-title-group h2 {
                font-size: 24px;
            }
            .hero {
                min-height: 400px;
                padding: 40px 0;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-content .hero-subtitle {
                font-size: 15px;
            }
            .services-matrix {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card-side {
                grid-column: span 1;
            }
            .metrics-grid {
                gap: 14px;
            }
            .metric-card .metric-value {
                font-size: 30px;
            }
            .comparison-grid {
                gap: 14px;
            }
            .brand-intro .brand-img {
                height: 220px;
            }
            .news-featured .news-img {
                height: 160px;
            }
            .deep-article {
                padding: 24px 18px;
            }
            .form-card {
                padding: 24px 18px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }
            .grid-container {
                padding: 0 16px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .header-cta .btn-primary {
                font-size: 13px;
                padding: 8px 14px;
            }
            .hero-content h1 {
                font-size: 22px;
                line-height: 1.4;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-cta-group .btn-primary,
            .hero-cta-group .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .section-title-group h2 {
                font-size: 21px;
            }
            .news-featured .news-img {
                height: 140px;
            }
            .news-featured h3 {
                font-size: 17px;
            }
            .brand-intro-content h2 {
                font-size: 21px;
            }
            .comparison-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .comparison-row .comp-value {
                text-align: left;
            }
            .footer-bottom .grid-container {
                gap: 8px;
            }
            .site-footer .grid-container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .faq-question {
                font-size: 15px;
                padding: 15px 16px;
            }
            .conversion-benefits h2 {
                font-size: 21px;
            }
        }

/* roulang page: category2 */
:root {
        --primary: #1D5E8F;
        --primary-deep: #103F61;
        --primary-light-bg: #E8F1FA;
        --accent-orange: #F2A33C;
        --data-teal: #17B3A3;
        --bg: #F4F8FC;
        --surface: #FFFFFF;
        --text: #172633;
        --text-secondary: #5B6E7E;
        --border: #D9E4EF;
        --footer-bg: #153450;
        --radius-lg: 16px;
        --radius-md: 14px;
        --radius-sm: 10px;
        --radius-pill: 999px;
        --shadow-card: 0 10px 30px rgba(23, 60, 95, 0.08);
        --shadow-card-hover: 0 18px 40px rgba(23, 60, 95, 0.14);
        --transition: all 0.25s ease;
        --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        --font-num: "Roboto Condensed", "DIN Alternate", "Barlow", sans-serif;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-cn);
        color: var(--text);
        background-color: var(--bg);
        line-height: 1.8;
        font-size: 16px;
        margin: 0;
        padding: 0;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover {
        color: var(--primary-deep);
        text-decoration: none;
    }
    button,
    input,
    textarea,
    select {
        font-family: var(--font-cn);
        font-size: 16px;
    }
    button:focus,
    input:focus,
    textarea:focus,
    select:focus,
    a:focus {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }
    .grid-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }
    /* Header & Navigation */
    .site-header {
        background: rgba(255, 255, 255, 0.94);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 999;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        min-height: 68px;
        display: flex;
        align-items: center;
    }
    .site-header .grid-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
        width: 100%;
    }
    .brand-logo {
        font-size: 22px;
        font-weight: 700;
        color: var(--primary-deep);
        letter-spacing: 1px;
        display: flex;
        align-items: center;
        gap: 8px;
        white-space: nowrap;
        flex-shrink: 0;
    }
    .brand-logo .logo-mark {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--primary);
        color: #fff;
        border-radius: 10px;
        font-size: 18px;
        font-weight: 700;
        letter-spacing: 0;
    }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 6px;
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .main-nav::-webkit-scrollbar {
        display: none;
    }
    .nav-chip {
        display: inline-flex;
        align-items: center;
        padding: 8px 16px;
        border-radius: var(--radius-pill);
        font-size: 14px;
        font-weight: 500;
        color: var(--primary);
        border: 1px solid var(--border);
        background: var(--surface);
        cursor: pointer;
        white-space: nowrap;
        transition: var(--transition);
    }
    .nav-chip:hover {
        background: var(--primary-light-bg);
        border-color: var(--primary);
        color: var(--primary-deep);
    }
    .nav-chip.active {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
        font-weight: 600;
    }
    .header-cta {
        flex-shrink: 0;
    }
    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: var(--accent-orange);
        color: #fff;
        border: none;
        border-radius: var(--radius-sm);
        padding: 10px 20px;
        font-weight: 600;
        font-size: 15px;
        cursor: pointer;
        transition: var(--transition);
        white-space: nowrap;
    }
    .btn-primary:hover {
        background: #e08e2b;
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(242, 163, 60, 0.3);
    }
    .btn-secondary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: transparent;
        color: var(--primary);
        border: 1.5px solid var(--primary);
        border-radius: var(--radius-sm);
        padding: 9px 20px;
        font-weight: 600;
        font-size: 15px;
        cursor: pointer;
        transition: var(--transition);
        white-space: nowrap;
    }
    .btn-secondary:hover {
        background: var(--primary-light-bg);
        border-color: var(--primary-deep);
        color: var(--primary-deep);
        transform: translateY(-2px);
    }
    .btn-dark {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: var(--primary-deep);
        color: #fff;
        border: none;
        border-radius: var(--radius-sm);
        padding: 10px 22px;
        font-weight: 600;
        font-size: 15px;
        cursor: pointer;
        transition: var(--transition);
        white-space: nowrap;
    }
    .btn-dark:hover {
        background: #0b2c44;
        color: #fff;
        transform: translateY(-2px);
    }
    /* Breadcrumb */
    .breadcrumb-section {
        background-color: var(--surface);
        border-bottom: 1px solid var(--border);
        padding: 16px 0;
    }
    .breadcrumb {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 14px;
        color: var(--text-secondary);
    }
    .breadcrumb li {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .breadcrumb li + li::before {
        content: "/";
        color: var(--border);
        margin-right: 8px;
    }
    .breadcrumb a {
        color: var(--primary);
        font-weight: 500;
    }
    .breadcrumb a:hover {
        color: var(--primary-deep);
        text-decoration: underline;
    }
    .breadcrumb .current {
        color: var(--text-secondary);
        font-weight: 500;
    }
    /* Hero */
    .category-hero {
        background-image: url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        position: relative;
        padding: 64px 0 80px;
        color: #fff;
        min-height: 420px;
        display: flex;
        align-items: center;
    }
    .category-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(16, 63, 97, 0.92) 0%, rgba(29, 94, 143, 0.75) 55%, rgba(0, 0, 0, 0.35) 100%);
        z-index: 1;
    }
    .category-hero .grid-container {
        position: relative;
        z-index: 2;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 40px;
    }
    .hero-text {
        max-width: 620px;
    }
    .hero-text h1 {
        font-size: 36px;
        font-weight: 700;
        line-height: 1.25;
        margin: 0 0 20px;
        color: #fff;
        letter-spacing: 0.5px;
    }
    .hero-text p {
        font-size: 18px;
        line-height: 1.8;
        color: rgba(255, 255, 255, 0.92);
        margin: 0 0 32px;
    }
    .hero-actions {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
    }
    .hero-actions .btn-primary,
    .hero-actions .btn-secondary {
        font-size: 16px;
        padding: 12px 24px;
        border-radius: 12px;
    }
    .hero-actions .btn-secondary {
        color: #fff;
        border-color: rgba(255, 255, 255, 0.7);
        background: rgba(255, 255, 255, 0.05);
    }
    .hero-actions .btn-secondary:hover {
        background: rgba(255, 255, 255, 0.2);
        border-color: #fff;
        color: #fff;
    }
    .hero-progress-card {
        background: rgba(255, 255, 255, 0.95);
        border-radius: var(--radius-lg);
        padding: 24px 26px;
        box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
        width: 300px;
        flex-shrink: 0;
        color: var(--text);
    }
    .hero-progress-card h2 {
        font-size: 18px;
        font-weight: 700;
        margin: 0 0 18px;
        color: var(--primary-deep);
    }
    .progress-ring-wrap {
        display: flex;
        align-items: center;
        gap: 18px;
        margin-bottom: 20px;
    }
    .progress-ring {
        width: 80px;
        height: 80px;
        border-radius: 50%;
        background: conic-gradient(var(--accent-orange) 0deg 245deg, var(--primary-light-bg) 245deg 360deg);
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        flex-shrink: 0;
    }
    .progress-ring::before {
        content: "";
        position: absolute;
        width: 64px;
        height: 64px;
        background: #fff;
        border-radius: 50%;
    }
    .progress-ring span {
        position: relative;
        z-index: 1;
        font-family: var(--font-num);
        font-weight: 700;
        font-size: 20px;
        color: var(--primary-deep);
    }
    .progress-meta {
        flex: 1;
    }
    .progress-meta p {
        font-size: 14px;
        color: var(--text-secondary);
        margin: 0 0 8px;
    }
    .progress-meta strong {
        display: block;
        font-family: var(--font-num);
        font-size: 28px;
        color: var(--primary-deep);
        line-height: 1.2;
    }
    .tier-preview {
        display: flex;
        flex-direction: column;
        gap: 10px;
        margin-bottom: 24px;
    }
    .tier-item {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 14px;
        background: var(--primary-light-bg);
        border-radius: var(--radius-sm);
        font-size: 14px;
        color: var(--primary-deep);
        font-weight: 500;
    }
    .tier-item span:last-child {
        font-family: var(--font-num);
        font-weight: 700;
        color: var(--accent-orange);
    }
    .btn-block {
        width: 100%;
    }
    /* Section base */
    .section {
        padding: 64px 0;
    }
    .section-title {
        font-size: 28px;
        font-weight: 700;
        margin: 0 0 16px;
        color: var(--text);
    }
    .section-subtitle {
        font-size: 16px;
        line-height: 1.8;
        color: var(--text-secondary);
        max-width: 700px;
        margin: 0 0 32px;
    }
    .section-header {
        margin-bottom: 40px;
    }
    .section-header.center {
        text-align: center;
    }
    .section-header.center .section-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    /* Data board cards */
    .data-overview-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 24px;
    }
    .data-overview-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 20px 22px;
        box-shadow: var(--shadow-card);
        flex: 1 1 220px;
        display: flex;
        align-items: center;
        gap: 18px;
        transition: var(--transition);
    }
    .data-overview-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-4px);
    }
    .data-overview-icon {
        width: 52px;
        height: 52px;
        border-radius: 14px;
        background: var(--primary-light-bg);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        flex-shrink: 0;
    }
    .data-overview-content h4 {
        font-size: 15px;
        margin: 0 0 6px;
        color: var(--text-secondary);
        font-weight: 500;
    }
    .data-overview-content strong {
        font-family: var(--font-num);
        font-size: 30px;
        color: var(--primary-deep);
        display: block;
        line-height: 1.2;
    }
    .data-overview-content p {
        font-size: 13px;
        color: var(--data-teal);
        margin: 4px 0 0;
        font-weight: 600;
    }
    /* Ranking tables */
    .ranking-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 32px;
        margin-top: 40px;
    }
    .ranking-panel {
        flex: 1 1 500px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: var(--transition);
    }
    .ranking-panel:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-3px);
    }
    .ranking-panel-header {
        background: var(--primary-deep);
        color: #fff;
        padding: 16px 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .ranking-panel-header h3 {
        font-size: 18px;
        font-weight: 700;
        margin: 0;
    }
    .ranking-panel-header .badge {
        background: var(--accent-orange);
        color: #fff;
        padding: 4px 12px;
        border-radius: var(--radius-pill);
        font-size: 13px;
        font-weight: 600;
    }
    .ranking-table {
        width: 100%;
        border-collapse: collapse;
    }
    .ranking-table th,
    .ranking-table td {
        padding: 12px 20px;
        text-align: left;
        font-size: 15px;
        border-bottom: 1px solid var(--border);
    }
    .ranking-table th {
        background: var(--primary-light-bg);
        color: var(--primary-deep);
        font-weight: 600;
        font-size: 14px;
    }
    .ranking-table td {
        color: var(--text);
    }
    .ranking-table tr:last-child td {
        border-bottom: none;
    }
    .ranking-table .rank {
        font-family: var(--font-num);
        font-weight: 700;
        color: var(--primary-deep);
        width: 50px;
    }
    .ranking-table .team {
        font-weight: 600;
        color: var(--text);
    }
    .ranking-table .points {
        font-family: var(--font-num);
        font-weight: 700;
        color: var(--accent-orange);
    }
    .ranking-table .trend-up {
        color: var(--data-teal);
        font-weight: 600;
    }
    .ranking-table .trend-down {
        color: #C0504D;
        font-weight: 600;
    }
    /* Data feature list */
    .feature-list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 24px;
        margin-top: 32px;
    }
    .feature-item {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 20px;
        transition: var(--transition);
    }
    .feature-item:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow-card);
    }
    .feature-item .feature-icon {
        width: 46px;
        height: 46px;
        border-radius: 12px;
        background: var(--primary-light-bg);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 16px;
        font-size: 20px;
    }
    .feature-item h4 {
        font-size: 18px;
        font-weight: 700;
        margin: 0 0 10px;
        color: var(--text);
    }
    .feature-item p {
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.8;
        margin: 0;
    }
    /* Process */
    .process-steps {
        display: flex;
        flex-wrap: wrap;
        gap: 28px;
        margin-top: 32px;
        counter-reset: step;
    }
    .process-step {
        flex: 1 1 200px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 24px 20px;
        position: relative;
        transition: var(--transition);
    }
    .process-step::before {
        counter-increment: step;
        content: counter(step);
        width: 34px;
        height: 34px;
        border-radius: 50%;
        background: var(--accent-orange);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--font-num);
        font-weight: 700;
        font-size: 16px;
        margin-bottom: 16px;
    }
    .process-step h4 {
        font-size: 18px;
        font-weight: 700;
        margin: 0 0 10px;
    }
    .process-step p {
        font-size: 15px;
        color: var(--text-secondary);
        margin: 0;
        line-height: 1.7;
    }
    .process-step:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow-card);
    }
    /* Use cases */
    .use-case-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 24px;
        margin-top: 32px;
    }
    .use-case-card {
        flex: 1 1 260px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 24px;
        box-shadow: var(--shadow-card);
        transition: var(--transition);
        text-align: center;
    }
    .use-case-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-4px);
    }
    .use-case-card .use-icon {
        width: 60px;
        height: 60px;
        border-radius: 50%;
        background: var(--primary-light-bg);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 16px;
        font-size: 26px;
    }
    .use-case-card h4 {
        font-size: 18px;
        font-weight: 700;
        margin: 0 0 10px;
    }
    .use-case-card p {
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin: 0;
    }
    /* FAQ */
    .faq-section {
        background: var(--surface);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }
    .accordion-item {
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        margin-bottom: 12px;
        background: #fff;
        overflow: hidden;
        transition: var(--transition);
    }
    .accordion-item:hover {
        border-color: var(--primary);
    }
    .accordion-trigger {
        background: none;
        border: none;
        width: 100%;
        text-align: left;
        padding: 16px 20px;
        font-size: 17px;
        font-weight: 600;
        color: var(--text);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        transition: var(--transition);
    }
    .accordion-trigger:hover {
        color: var(--primary);
    }
    .accordion-trigger .icon {
        font-size: 22px;
        color: var(--primary);
        flex-shrink: 0;
        transition: transform 0.25s ease;
    }
    .accordion-item.is-active .accordion-trigger .icon {
        transform: rotate(45deg);
    }
    .accordion-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        padding: 0 20px;
        color: var(--text-secondary);
        font-size: 15px;
        line-height: 1.8;
    }
    .accordion-content p {
        margin: 0 0 16px;
    }
    .accordion-content p:last-child {
        margin-bottom: 0;
    }
    .accordion-item.is-active .accordion-content {
        max-height: 400px;
        padding-bottom: 20px;
    }
    /* CTA Form */
    .cta-section {
        background: var(--primary-deep);
        color: #fff;
    }
    .cta-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 40px;
        align-items: center;
    }
    .cta-left {
        flex: 1 1 40%;
    }
    .cta-left h2 {
        font-size: 28px;
        font-weight: 700;
        margin: 0 0 16px;
        color: #fff;
    }
    .cta-left p {
        font-size: 16px;
        line-height: 1.8;
        color: rgba(255, 255, 255, 0.85);
        margin: 0 0 24px;
    }
    .cta-benefits {
        list-style: none;
        margin: 0 0 24px;
        padding: 0;
    }
    .cta-benefits li {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 16px;
        color: #fff;
        margin-bottom: 12px;
    }
    .cta-benefits li i {
        color: var(--accent-orange);
        font-size: 18px;
    }
    .cta-right {
        flex: 1 1 45%;
        background: var(--surface);
        border-radius: var(--radius-lg);
        padding: 28px;
        color: var(--text);
        box-shadow: 0 18px 40px rgba(0, 0, 0, 0.2);
    }
    .cta-right h3 {
        font-size: 22px;
        font-weight: 700;
        margin: 0 0 20px;
        color: var(--primary-deep);
    }
    .form-group {
        margin-bottom: 16px;
    }
    .form-group label {
        display: block;
        font-size: 14px;
        font-weight: 500;
        margin-bottom: 6px;
        color: var(--text);
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
        width: 100%;
        padding: 10px 14px;
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        font-size: 15px;
        background: #fff;
        color: var(--text);
        transition: var(--transition);
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 2px rgba(29, 94, 143, 0.15);
    }
    .form-group textarea {
        min-height: 90px;
        resize: vertical;
    }
    .btn-submit {
        width: 100%;
        background: var(--accent-orange);
        color: #fff;
        border: none;
        border-radius: var(--radius-sm);
        padding: 12px;
        font-size: 16px;
        font-weight: 700;
        cursor: pointer;
        transition: var(--transition);
    }
    .btn-submit:hover {
        background: #e08e2b;
        box-shadow: 0 8px 20px rgba(242, 163, 60, 0.35);
        transform: translateY(-2px);
    }
    /* Footer */
    .site-footer {
        background: var(--footer-bg);
        color: rgba(255, 255, 255, 0.8);
        font-size: 15px;
        padding: 48px 0 0;
    }
    .site-footer .grid-container:first-child {
        display: flex;
        flex-wrap: wrap;
        gap: 40px;
        padding-bottom: 32px;
    }
    .footer-brand {
        font-size: 20px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 10px;
    }
    .footer-desc {
        max-width: 300px;
        font-size: 14px;
        line-height: 1.8;
        color: rgba(255, 255, 255, 0.7);
        margin: 0;
    }
    .footer-col {
        flex: 1 1 150px;
    }
    .footer-col h4 {
        color: #fff;
        font-size: 16px;
        font-weight: 600;
        margin: 0 0 16px;
    }
    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .footer-col ul li {
        margin-bottom: 10px;
    }
    .footer-col ul li a {
        color: rgba(255, 255, 255, 0.7);
        font-size: 14px;
        transition: var(--transition);
    }
    .footer-col ul li a:hover {
        color: var(--accent-orange);
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.15);
        padding: 16px 0;
        background: rgba(0, 0, 0, 0.1);
    }
    .footer-bottom .grid-container {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.65);
    }
    .footer-bottom p {
        margin: 0;
    }
    .footer-links a {
        color: rgba(255, 255, 255, 0.7);
        margin: 0 4px;
    }
    .footer-links a:hover {
        color: var(--accent-orange);
    }
    .footer-links span {
        color: rgba(255, 255, 255, 0.4);
    }
    /* Responsive */
    @media screen and (max-width: 1024px) {
        .site-header .grid-container {
            gap: 16px;
        }
        .main-nav {
            overflow-x: auto;
        }
        .category-hero .grid-container {
            flex-direction: column;
            align-items: flex-start;
        }
        .hero-progress-card {
            width: 100%;
            max-width: 400px;
        }
    }
    @media screen and (max-width: 640px) {
        .site-header .grid-container {
            flex-wrap: wrap;
            gap: 8px;
        }
        .header-cta {
            order: 3;
            width: 100%;
            justify-content: center;
        }
        .main-nav {
            order: 2;
            width: 100%;
            overflow-x: auto;
        }
        .brand-logo {
            font-size: 20px;
        }
        .category-hero {
            padding: 40px 0 60px;
            min-height: 360px;
        }
        .hero-text h1 {
            font-size: 28px;
        }
        .hero-text p {
            font-size: 16px;
        }
        .section {
            padding: 40px 0;
        }
        .section-title {
            font-size: 24px;
        }
        .data-overview-card {
            flex: 1 1 100%;
        }
        .ranking-grid {
            flex-direction: column;
        }
        .ranking-panel {
            flex: 1 1 auto;
        }
        .process-steps,
        .use-case-grid {
            flex-direction: column;
        }
        .cta-grid {
            flex-direction: column;
        }
        .cta-left,
        .cta-right {
            flex: 1 1 auto;
            width: 100%;
        }
        .footer-bottom .grid-container {
            flex-direction: column;
            align-items: flex-start;
        }
    }

/* roulang page: category1 */
:root {
            --primary: #1D5E8F;
            --primary-deep: #103F61;
            --primary-light-bg: #E8F1FA;
            --accent-orange: #F2A33C;
            --data-teal: #17B3A3;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #172633;
            --text-secondary: #5B6E7E;
            --border: #D9E4EF;
            --footer-bg: #153450;
            --radius-lg: 16px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(23, 60, 95, 0.08);
            --shadow-card-hover: 0 18px 40px rgba(23, 60, 95, 0.14);
            --transition: all 0.25s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Roboto Condensed", "DIN Alternate", "Barlow", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-cn);
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }

        button,
        input,
        textarea,
        select {
            font-family: var(--font-cn);
            font-size: 16px;
        }

        button:focus,
        input:focus,
        textarea:focus,
        select:focus,
        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== Header & Navigation ========== */
        .site-header {
            background: rgba(255, 255, 255, 0.94);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 999;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            min-height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .grid-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            border: 1px solid var(--border);
            background: var(--surface);
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-chip:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary);
            color: var(--primary-deep);
        }

        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: #e08e2b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(242, 163, 60, 0.3);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 9px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary-deep);
            color: var(--primary-deep);
            transform: translateY(-2px);
        }

        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary-deep);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-dark:hover {
            background: #0c2f4a;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            color: var(--primary);
            border: none;
            padding: 6px 0;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-text:hover {
            color: var(--primary-deep);
            gap: 10px;
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 8px;
            width: 42px;
            height: 42px;
            cursor: pointer;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            flex-shrink: 0;
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            background: var(--primary-light-bg);
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--text-secondary);
            font-size: 12px;
        }

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

        /* ========== Hero / Page Banner ========== */
        .page-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            min-height: 380px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(16, 63, 97, 0.92) 0%, rgba(16, 63, 97, 0.75) 40%, rgba(16, 63, 97, 0.55) 100%);
            z-index: 1;
        }

        .page-hero .grid-container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .page-hero-content {
            max-width: 780px;
            color: #fff;
            padding: 40px 0;
        }

        .page-hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(242, 163, 60, 0.18);
            border: 1px solid rgba(242, 163, 60, 0.4);
            color: var(--accent-orange);
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .page-hero h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: 1px;
        }

        .page-hero p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
            max-width: 640px;
        }

        /* ========== Sub Category Chips ========== */
        .sub-chips-section {
            padding: 20px 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 68px;
            z-index: 100;
        }

        .sub-chips {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }

        .sub-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            background: var(--bg);
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition);
        }

        .sub-chip:hover {
            background: var(--primary-light-bg);
            color: var(--primary);
            border-color: var(--primary);
        }

        .sub-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* ========== Section Base ========== */
        .section {
            padding: 56px 0;
        }

        .section-alt {
            background: var(--surface);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 680px;
            line-height: 1.7;
        }

        .section-header {
            margin-bottom: 28px;
        }

        .section-header .section-title {
            margin-bottom: 6px;
        }

        /* ========== News Feature (首条大图) ========== */
        .news-feature {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 0;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            margin-bottom: 28px;
        }

        .news-feature:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .news-feature-image {
            min-height: 320px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .news-feature-image .feature-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent-orange);
            color: #fff;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .news-feature-body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .news-feature-date {
            font-size: 13px;
            color: var(--text-secondary);
            font-family: var(--font-num);
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }

        .news-feature-title {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text);
            margin-bottom: 12px;
        }

        .news-feature-excerpt {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 18px;
        }

        /* ========== News Grid Cards ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .news-card-image {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

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

        .news-card-date {
            font-size: 12px;
            color: var(--text-secondary);
            font-family: var(--font-num);
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .news-card-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
            margin-bottom: 10px;
        }

        .news-card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 14px;
        }

        /* ========== Data Snapshot / Mini Metrics ========== */
        .data-snapshot {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 20px;
        }

        .data-snapshot-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 18px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .data-snapshot-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .data-snapshot-number {
            font-size: 32px;
            font-weight: 700;
            font-family: var(--font-num);
            color: var(--primary-deep);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .data-snapshot-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .data-snapshot-trend {
            font-size: 12px;
            color: var(--data-teal);
            margin-top: 4px;
            font-weight: 500;
        }

        /* ========== Deep Reading / Featured Content ========== */
        .deep-reading-section {
            background: var(--primary-light-bg);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            margin-top: 20px;
        }

        .deep-reading-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-deep);
            margin-bottom: 20px;
        }

        .deep-reading-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .deep-reading-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .deep-reading-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
        }

        .deep-reading-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .deep-reading-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        /* ========== FAQ Accordion ========== */
        .faq-list {
            max-width: 820px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 22px;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1.5px solid var(--border);
            border-radius: 50%;
            color: var(--primary);
            font-size: 18px;
            font-weight: 600;
            transition: var(--transition);
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* ========== CTA / Conversion Form ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 36px;
            align-items: center;
            margin-top: 20px;
            overflow: hidden;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(242, 163, 60, 0.12);
            z-index: 0;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: 120px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(23, 179, 163, 0.12);
            z-index: 0;
        }

        .cta-info {
            position: relative;
            z-index: 1;
        }

        .cta-info h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .cta-benefits {
            list-style: none;
            padding: 0;
            margin: 0 0 8px;
        }

        .cta-benefits li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: rgba(255, 255, 255, 0.88);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 10px;
        }

        .cta-benefits li::before {
            content: '✓';
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            background: var(--data-teal);
            color: #fff;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            margin-top: 2px;
        }

        .cta-form {
            position: relative;
            z-index: 1;
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 28px 30px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
        }

        .cta-form h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

        .form-group {
            margin-bottom: 14px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text);
            background: var(--bg);
            transition: var(--transition);
            font-family: var(--font-cn);
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(29, 94, 143, 0.15);
            outline: none;
            background: var(--surface);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }

        .form-submit {
            width: 100%;
            padding: 12px 20px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
        }

        .form-submit:hover {
            background: #e08e2b;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(242, 163, 60, 0.3);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 0;
            margin-top: 48px;
        }

        .site-footer .grid-container {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr;
            gap: 36px;
            padding-bottom: 36px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 1px;
        }

        .footer-desc {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 18px 0;
        }

        .footer-bottom .grid-container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 8px 16px;
            padding-bottom: 0;
        }

        .footer-bottom p {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 12px;
        }

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

        .footer-links span {
            color: rgba(255, 255, 255, 0.4);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .site-header .grid-container {
                gap: 12px;
            }

            .main-nav {
                gap: 4px;
            }

            .nav-chip {
                padding: 7px 12px;
                font-size: 13px;
            }

            .header-cta .btn-primary {
                padding: 9px 14px;
                font-size: 13px;
            }

            .brand-logo {
                font-size: 19px;
            }

            .brand-logo .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }

            .page-hero {
                min-height: 320px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .news-feature {
                grid-template-columns: 1fr;
            }

            .news-feature-image {
                min-height: 240px;
            }

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

            .cta-section {
                grid-template-columns: 1fr;
                padding: 32px 28px;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                min-height: 60px;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--surface);
                border-bottom: 1px solid var(--border);
                padding: 16px 20px;
                flex-direction: column;
                gap: 8px;
                box-shadow: 0 12px 30px rgba(23, 60, 95, 0.1);
                z-index: 998;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav .nav-chip {
                width: 100%;
                justify-content: center;
                padding: 12px 16px;
                font-size: 14px;
                border-radius: var(--radius-md);
            }

            .header-cta .btn-primary {
                padding: 8px 12px;
                font-size: 12px;
                white-space: nowrap;
            }

            .brand-logo {
                font-size: 17px;
                gap: 6px;
            }

            .brand-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 14px;
                border-radius: 8px;
            }

            .page-hero {
                min-height: 280px;
            }

            .page-hero h1 {
                font-size: 24px;
            }

            .page-hero p {
                font-size: 14px;
                line-height: 1.7;
            }

            .section {
                padding: 40px 0;
            }

            .section-title {
                font-size: 22px;
            }

            .news-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .news-feature-body {
                padding: 20px;
            }

            .news-feature-title {
                font-size: 18px;
            }

            .news-card-title {
                font-size: 15px;
            }

            .data-snapshot {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .data-snapshot-number {
                font-size: 24px;
            }

            .deep-reading-section {
                padding: 24px 18px;
            }

            .deep-reading-list {
                grid-template-columns: 1fr;
            }

            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }

            .faq-answer {
                font-size: 13px;
                padding: 0 16px;
            }

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

            .cta-section {
                padding: 24px 18px;
                border-radius: var(--radius-md);
            }

            .cta-info h3 {
                font-size: 19px;
            }

            .cta-form {
                padding: 20px 18px;
            }

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

            .footer-bottom .grid-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }

            .sub-chips-section {
                top: 60px;
            }

            .sub-chip {
                font-size: 12px;
                padding: 5px 12px;
            }
        }

        @media (max-width: 520px) {
            .grid-container {
                padding: 0 14px;
            }

            .header-cta .btn-primary {
                padding: 7px 10px;
                font-size: 11px;
                border-radius: 8px;
            }

            .brand-logo {
                font-size: 15px;
            }

            .brand-logo .logo-mark {
                width: 26px;
                height: 26px;
                font-size: 12px;
                border-radius: 6px;
            }

            .page-hero {
                min-height: 240px;
            }

            .page-hero h1 {
                font-size: 21px;
            }

            .page-hero .hero-tag {
                font-size: 11px;
                padding: 5px 12px;
            }

            .news-card-image {
                height: 160px;
            }

            .data-snapshot {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .data-snapshot-item {
                padding: 14px 10px;
            }

            .data-snapshot-number {
                font-size: 20px;
            }

            .cta-section {
                padding: 20px 14px;
                gap: 18px;
            }

            .cta-info h3 {
                font-size: 17px;
            }

            .cta-benefits li {
                font-size: 13px;
            }

            .form-group input,
            .form-group select,
            .form-group textarea {
                font-size: 13px;
                padding: 8px 12px;
            }

            .form-submit {
                font-size: 14px;
                padding: 10px 16px;
            }

            .faq-question {
                font-size: 13px;
                padding: 12px 14px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1D5E8F;
            --primary-deep: #103F61;
            --primary-light-bg: #E8F1FA;
            --accent-orange: #F2A33C;
            --data-teal: #17B3A3;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #172633;
            --text-secondary: #5B6E7E;
            --border: #D9E4EF;
            --footer-bg: #153450;
            --radius-lg: 16px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(23, 60, 95, 0.08);
            --shadow-card-hover: 0 18px 40px rgba(23, 60, 95, 0.14);
            --transition: all 0.25s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Roboto Condensed", "DIN Alternate", "Barlow", sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-cn);
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.8;
            font-size: 16px;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }
        button,
        input,
        textarea,
        select {
            font-family: var(--font-cn);
            font-size: 16px;
        }
        button:focus,
        input:focus,
        textarea:focus,
        select:focus,
        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .site-header {
            background: rgba(255, 255, 255, 0.94);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 999;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            min-height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .grid-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .main-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            border: 1px solid var(--border);
            background: var(--surface);
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-chip:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary);
            color: var(--primary-deep);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: #e08e2b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(242, 163, 60, 0.3);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 9px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary-deep);
            color: var(--primary-deep);
            transform: translateY(-2px);
        }
        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary-deep);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-dark:hover {
            background: #0c2e47;
            color: #fff;
            transform: translateY(-2px);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .breadcrumb {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--border);
            font-weight: 300;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Hero Section */
        .hero-analysis {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            min-height: 320px;
            display: flex;
            align-items: center;
            padding: 56px 0;
            margin-bottom: 48px;
        }
        .hero-analysis::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(16, 63, 97, 0.88) 0%, rgba(29, 94, 143, 0.72) 50%, rgba(16, 63, 97, 0.55) 100%);
            z-index: 1;
        }
        .hero-analysis .grid-container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .hero-analysis h1 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
            line-height: 1.3;
            letter-spacing: 1px;
        }
        .hero-analysis .hero-meta {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            margin: 0 0 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-analysis .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.92);
            max-width: 680px;
            line-height: 1.85;
            margin: 0;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent-orange);
            color: #fff;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
        }

        /* Sub-category chips */
        .sub-chips {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin: 0 0 48px;
        }
        .sub-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--surface);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .sub-chip:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary);
            color: var(--primary);
        }
        .sub-chip.active {
            background: var(--primary-light-bg);
            color: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
        }

        /* Section titles */
        .section-head {
            margin-bottom: 32px;
        }
        .section-head h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 8px;
            line-height: 1.35;
        }
        .section-head p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            max-width: 680px;
        }
        .section-head .section-line {
            width: 48px;
            height: 3px;
            background: var(--accent-orange);
            border-radius: 2px;
            margin-bottom: 12px;
        }

        /* Analysis cards */
        .analysis-list {
            margin-bottom: 72px;
        }
        .analysis-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .analysis-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-light-bg);
        }
        .analysis-card .card-cover {
            position: relative;
            height: 220px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .analysis-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .analysis-card:hover .card-cover img {
            transform: scale(1.04);
        }
        .analysis-card .card-cover .cover-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent-orange);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 1px;
        }
        .analysis-card .card-body {
            padding: 24px 28px 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .analysis-card .card-date {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
            margin: 0 0 10px;
            font-family: var(--font-num);
        }
        .analysis-card .card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
            line-height: 1.45;
        }
        .analysis-card .card-summary {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 18px;
            flex: 1;
        }
        .analysis-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 8px 18px;
            align-self: flex-start;
            transition: var(--transition);
        }
        .analysis-card .read-more:hover {
            background: var(--primary);
            color: #fff;
        }

        /* Featured analysis - large card */
        .featured-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 32px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            transition: var(--transition);
        }
        .featured-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-light-bg);
        }
        .featured-card .featured-cover {
            position: relative;
            height: 100%;
            min-height: 320px;
            overflow: hidden;
        }
        .featured-card .featured-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .featured-card:hover .featured-cover img {
            transform: scale(1.04);
        }
        .featured-card .featured-cover .featured-tag {
            position: absolute;
            top: 20px;
            left: 20px;
            background: var(--data-teal);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            letter-spacing: 1px;
        }
        .featured-card .featured-body {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-card .featured-date {
            font-size: 13px;
            color: var(--text-secondary);
            font-family: var(--font-num);
            letter-spacing: 0.5px;
            margin: 0 0 10px;
        }
        .featured-card .featured-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 14px;
            line-height: 1.4;
        }
        .featured-card .featured-summary {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin: 0 0 20px;
        }
        .featured-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            align-self: flex-start;
            transition: var(--transition);
        }
        .featured-card .read-more:hover {
            background: var(--primary-deep);
            color: #fff;
            transform: translateY(-2px);
        }

        /* Analysis method section */
        .method-section {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            margin-bottom: 72px;
            box-shadow: var(--shadow-card);
        }
        .method-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }
        .method-item {
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding: 20px;
            border-radius: var(--radius-md);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .method-item:hover {
            border-color: var(--primary);
            background: var(--primary-light-bg);
        }
        .method-item .method-num {
            font-family: var(--font-num);
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
        }
        .method-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0;
            line-height: 1.5;
        }
        .method-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        /* Data panel */
        .data-panel {
            background: var(--primary-deep);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            margin-bottom: 72px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .data-panel .panel-text h2 {
            font-size: 24px;
            color: #fff;
            margin: 0 0 12px;
            line-height: 1.4;
        }
        .data-panel .panel-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            margin: 0;
            line-height: 1.8;
        }
        .data-panel .panel-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .panel-stat {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 18px;
            text-align: center;
        }
        .panel-stat .stat-num {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 700;
            color: var(--accent-orange);
            line-height: 1.2;
        }
        .panel-stat .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 6px;
        }

        /* FAQ */
        .faq-section {
            margin-bottom: 72px;
        }
        .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .accordion-item:hover {
            border-color: var(--primary);
        }
        .accordion-trigger {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 16px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            transition: var(--transition);
            text-align: left;
            gap: 16px;
        }
        .accordion-trigger:hover {
            color: var(--primary);
        }
        .accordion-trigger .icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-light-bg);
            color: var(--primary);
            font-size: 18px;
            transition: var(--transition);
        }
        .accordion-trigger.active .icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .accordion-content .inner {
            padding: 0 20px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .accordion-content.open {
            max-height: 600px;
        }

        /* CTA Form */
        .cta-section {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            margin-bottom: 72px;
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
        }
        .cta-benefits h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 16px;
            line-height: 1.4;
        }
        .cta-benefits .benefit-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .cta-benefits .benefit-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }
        .cta-benefits .benefit-list li::before {
            content: '✓';
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            background: var(--data-teal);
            color: #fff;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            margin-top: 3px;
        }
        .cta-form-card {
            background: var(--primary-light-bg);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border);
        }
        .cta-form-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary-deep);
            margin: 0 0 16px;
        }
        .cta-form-card input,
        .cta-form-card textarea,
        .cta-form-card select {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: var(--surface);
            font-size: 15px;
            color: var(--text);
            transition: var(--transition);
            margin-bottom: 12px;
            box-sizing: border-box;
        }
        .cta-form-card input:focus,
        .cta-form-card textarea:focus,
        .cta-form-card select:focus {
            outline: 2px solid var(--primary);
            outline-offset: 0;
            border-color: var(--primary);
        }
        .cta-form-card textarea {
            resize: vertical;
            min-height: 80px;
        }
        .cta-form-card .btn-primary {
            width: 100%;
            margin-top: 4px;
        }

        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 0;
            margin-top: 0;
        }
        .site-footer .grid-container {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
            justify-content: space-between;
        }
        .footer-brand-area {
            max-width: 300px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 1px;
        }
        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 1px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin-top: 40px;
            padding: 20px 0;
        }
        .footer-bottom .grid-container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-orange);
        }
        .footer-links span {
            color: rgba(255, 255, 255, 0.4);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .featured-card {
                grid-template-columns: 1fr;
            }
            .featured-card .featured-cover {
                min-height: 240px;
            }
            .data-panel {
                grid-template-columns: 1fr;
            }
            .cta-section {
                grid-template-columns: 1fr;
            }
            .hero-analysis h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                min-height: auto;
                padding: 10px 0;
            }
            .site-header .grid-container {
                flex-wrap: wrap;
                gap: 12px;
            }
            .header-cta {
                margin-left: auto;
            }
            .main-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                padding-bottom: 4px;
            }
            .hero-analysis {
                min-height: 240px;
                padding: 40px 0;
            }
            .hero-analysis h1 {
                font-size: 24px;
            }
            .hero-analysis .hero-desc {
                font-size: 15px;
            }
            .analysis-card .card-body {
                padding: 18px 20px 22px;
            }
            .analysis-card .card-cover {
                height: 180px;
            }
            .featured-card .featured-body {
                padding: 24px 22px;
            }
            .featured-card .featured-title {
                font-size: 20px;
            }
            .method-section {
                padding: 28px 20px;
            }
            .data-panel {
                padding: 28px 20px;
            }
            .cta-section {
                padding: 28px 20px;
            }
            .sub-chips {
                gap: 6px;
            }
            .sub-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .section-head h2 {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .grid-container {
                padding: 0 16px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .brand-logo .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .analysis-card {
                margin-bottom: 16px;
            }
            .analysis-card .card-cover {
                height: 160px;
            }
            .analysis-card .card-title {
                font-size: 17px;
            }
            .panel-stats {
                grid-template-columns: 1fr;
            }
            .footer-bottom .grid-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .footer-links {
                flex-wrap: wrap;
            }
            .cta-form-card {
                padding: 16px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1D5E8F;
            --primary-deep: #103F61;
            --primary-light-bg: #E8F1FA;
            --accent-orange: #F2A33C;
            --data-teal: #17B3A3;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #172633;
            --text-secondary: #5B6E7E;
            --border: #D9E4EF;
            --footer-bg: #153450;
            --radius-lg: 16px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(23, 60, 95, 0.08);
            --shadow-card-hover: 0 18px 40px rgba(23, 60, 95, 0.14);
            --transition: all 0.25s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Roboto Condensed", "DIN Alternate", "Barlow", sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-cn);
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.8;
            font-size: 16px;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }

        button,
        input,
        textarea,
        select {
            font-family: var(--font-cn);
            font-size: 16px;
        }

        button:focus,
        input:focus,
        textarea:focus,
        select:focus,
        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .site-header {
            background: rgba(255, 255, 255, 0.94);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 999;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            min-height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .grid-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            border: 1px solid var(--border);
            background: var(--surface);
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-chip:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary);
            color: var(--primary-deep);
        }

        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: #e08e2b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(242, 163, 60, 0.3);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 9px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary-deep);
            color: var(--primary-deep);
            transform: translateY(-2px);
        }

        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary-deep);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-dark:hover {
            background: #0b2f47;
            color: #fff;
            transform: translateY(-2px);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 20px 0 0 0;
            background: var(--bg);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }

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

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

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

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

        /* Page Hero */
        .page-hero {
            padding: 40px 0 48px;
            background: var(--bg);
            position: relative;
        }

        .page-hero .hero-content {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: start;
        }

        .page-hero h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary-deep);
            margin: 0 0 16px 0;
        }

        .page-hero .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin: 0 0 20px 0;
            max-width: 680px;
        }

        .page-hero .hero-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: #fff;
            padding: 6px;
        }

        .page-hero .hero-image img {
            border-radius: calc(var(--radius-lg) - 6px);
            width: 100%;
            height: auto;
        }

        .hero-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .hero-chip {
            display: inline-block;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            background: var(--primary-light-bg);
            color: var(--primary);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .hero-chip:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* Section common */
        .section {
            padding: 56px 0;
        }

        .section-alt {
            background: var(--surface);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 12px 0;
            line-height: 1.35;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 0 32px 0;
            line-height: 1.8;
        }

        /* Training benefit cards */
        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 24px;
        }

        .benefit-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .benefit-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-light-bg);
        }

        .benefit-card .benefit-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-light-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 14px;
            color: var(--primary);
        }

        .benefit-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px 0;
        }

        .benefit-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.75;
        }

        /* Training method section - two column feature */
        .method-section {
            padding: 56px 0;
            background: var(--surface);
        }

        .method-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .method-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: #fff;
            padding: 6px;
        }

        .method-image img {
            border-radius: calc(var(--radius-lg) - 6px);
            width: 100%;
            height: auto;
        }

        .method-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 12px 0;
        }

        .method-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin: 0 0 16px 0;
        }

        .method-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0 0;
        }

        .method-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.7;
        }

        .method-list li .check-icon {
            color: var(--data-teal);
            flex-shrink: 0;
            font-weight: 700;
        }

        /* Training plan cards */
        .plan-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 24px;
        }

        .plan-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .plan-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-light-bg);
        }

        .plan-card .plan-image {
            height: 200px;
            overflow: hidden;
        }

        .plan-card .plan-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .plan-card .plan-body {
            padding: 22px 20px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .plan-card .plan-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light-bg);
            color: var(--primary);
            margin-bottom: 10px;
            width: fit-content;
        }

        .plan-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 10px 0;
        }

        .plan-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 16px 0;
            line-height: 1.75;
            flex: 1;
        }

        .plan-card .plan-link {
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        /* Data insights */
        .data-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            background: var(--primary-deep);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            margin-top: 24px;
            align-items: center;
            justify-content: space-between;
        }

        .data-strip .data-item {
            display: flex;
            align-items: baseline;
            gap: 8px;
            color: #fff;
        }

        .data-strip .data-number {
            font-family: var(--font-num);
            font-size: 36px;
            font-weight: 700;
            color: var(--accent-orange);
            line-height: 1;
        }

        .data-strip .data-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }

        .data-strip .data-note {
            font-size: 13px;
            color: var(--data-teal);
            margin-left: 4px;
        }

        /* Process steps */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 24px;
        }

        .step-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: var(--transition);
        }

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

        .step-number {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 700;
            color: var(--primary-light-bg);
            line-height: 1;
            margin-bottom: 12px;
        }

        .step-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px 0;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            margin-top: 24px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            background: var(--surface);
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }

        .faq-question:hover {
            background: var(--primary-light-bg);
            color: var(--primary-deep);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

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

        /* CTA form section */
        .cta-section {
            padding: 56px 0 64px;
            background: var(--bg);
        }

        .cta-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
            align-items: center;
        }

        .cta-panel .cta-left h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 12px 0;
        }

        .cta-panel .cta-left p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 16px 0;
            line-height: 1.8;
        }

        .cta-benefits {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .cta-benefits li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.7;
        }

        .cta-benefits li .benefit-dot {
            color: var(--accent-orange);
            flex-shrink: 0;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .cta-form label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: -6px;
        }

        .cta-form input,
        .cta-form textarea,
        .cta-form select {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 15px;
            color: var(--text);
            background: var(--bg);
            transition: var(--transition);
        }

        .cta-form input:focus,
        .cta-form textarea:focus,
        .cta-form select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(29, 94, 143, 0.15);
            background: #fff;
        }

        .cta-form textarea {
            resize: vertical;
            min-height: 80px;
        }

        .cta-form .btn-primary {
            width: 100%;
            padding: 12px 20px;
            font-size: 16px;
        }

        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 0 0;
            margin-top: 0;
        }

        .site-footer .grid-container {
            display: grid;
            grid-template-columns: 1.2fr 0.9fr 0.9fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 1px;
        }

        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            background: var(--footer-bg);
        }

        .footer-bottom .grid-container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding: 0 20px;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .benefit-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .page-hero .hero-content {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

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

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

        @media (max-width: 640px) {
            .site-header .grid-container {
                flex-wrap: wrap;
                gap: 10px;
                padding: 10px 16px;
            }

            .header-cta {
                display: none;
            }

            .main-nav {
                width: 100%;
                order: 3;
                padding-bottom: 4px;
            }

            .brand-logo {
                font-size: 18px;
            }

            .brand-logo .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 16px;
                border-radius: 8px;
            }

            .nav-chip {
                padding: 6px 12px;
                font-size: 12px;
            }

            .page-hero {
                padding: 24px 0 32px;
            }

            .page-hero h1 {
                font-size: 24px;
            }

            .page-hero .hero-desc {
                font-size: 15px;
            }

            .section {
                padding: 40px 0;
            }

            .section-title {
                font-size: 22px;
            }

            .benefit-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .plan-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .step-timeline {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .data-strip {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
                padding: 24px 20px;
            }

            .data-strip .data-number {
                font-size: 28px;
            }

            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }

            .faq-answer {
                font-size: 14px;
                padding: 0 16px;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }

            .cta-panel {
                padding: 24px 20px;
                gap: 20px;
            }

            .cta-panel .cta-left h3 {
                font-size: 20px;
            }

            .cta-form input,
            .cta-form textarea,
            .cta-form select {
                font-size: 14px;
                padding: 8px 12px;
            }

            .footer-bottom .grid-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .footer-bottom p {
                font-size: 12px;
            }

            .footer-links {
                flex-wrap: wrap;
                font-size: 12px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1D5E8F;
            --primary-deep: #103F61;
            --primary-light-bg: #E8F1FA;
            --accent-orange: #F2A33C;
            --data-teal: #17B3A3;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #172633;
            --text-secondary: #5B6E7E;
            --border: #D9E4EF;
            --footer-bg: #153450;
            --radius-lg: 16px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(23, 60, 95, 0.08);
            --shadow-card-hover: 0 18px 40px rgba(23, 60, 95, 0.14);
            --transition: all 0.25s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Roboto Condensed", "DIN Alternate", "Barlow", sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-cn);
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.8;
            font-size: 16px;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }
        button,
        input,
        textarea,
        select {
            font-family: var(--font-cn);
            font-size: 16px;
        }
        button:focus,
        input:focus,
        textarea:focus,
        select:focus,
        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: rgba(255, 255, 255, 0.94);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 999;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            min-height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .grid-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-deep);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .main-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            border: 1px solid var(--border);
            background: var(--surface);
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-chip:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary);
            color: var(--primary-deep);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: #e08e2b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(242, 163, 60, 0.3);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 9px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: var(--primary-light-bg);
            border-color: var(--primary-deep);
            color: var(--primary-deep);
            transform: translateY(-2px);
        }
        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary-deep);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-dark:hover {
            background: #0d324d;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(21, 52, 80, 0.3);
        }
        .breadcrumb {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .breadcrumb .grid-container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            color: var(--primary-deep);
        }
        .breadcrumb .separator {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }
        .page-hero {
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary) 45%, rgba(29, 94, 143, 0.72) 100%);
            color: #fff;
            padding: 60px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 420px;
            height: 100%;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .page-hero .grid-container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 40px;
            position: relative;
            z-index: 1;
        }
        .page-hero-content {
            flex: 1 1 520px;
            max-width: 720px;
        }
        .page-hero h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 16px;
            color: #fff;
        }
        .page-hero .hero-sub {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.88);
            margin: 0 0 24px;
            max-width: 680px;
        }
        .page-hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            margin-top: 8px;
        }
        .hero-stat {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-md);
            padding: 14px 20px;
            text-align: center;
            min-width: 110px;
        }
        .hero-stat .stat-num {
            font-family: var(--font-num);
            font-size: 28px;
            font-weight: 700;
            color: var(--accent-orange);
            letter-spacing: 0.5px;
        }
        .hero-stat .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.82);
        }
        .chip-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .section-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.28);
            white-space: nowrap;
        }
        .section {
            padding: 72px 0;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 10px;
            line-height: 1.35;
        }
        .section-intro {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 0 32px;
            line-height: 1.9;
        }
        .event-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 24px;
        }
        .event-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .event-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-light-bg);
        }
        .event-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .event-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .event-card:hover .event-card-img img {
            transform: scale(1.04);
        }
        .event-card-body {
            padding: 22px 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .event-tag {
            display: inline-flex;
            align-items: center;
            background: var(--primary-light-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 4px 12px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .event-tag.teal {
            background: rgba(23, 179, 163, 0.12);
            color: var(--data-teal);
        }
        .event-tag.orange {
            background: rgba(242, 163, 60, 0.12);
            color: var(--accent-orange);
        }
        .event-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 10px;
            line-height: 1.5;
        }
        .event-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.8;
            flex: 1;
        }
        .event-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }
        .event-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .event-meta .meta-icon {
            color: var(--primary);
            font-weight: 600;
        }
        .event-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }
        .btn-small {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            padding: 8px 18px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-small.btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-small.btn-outline:hover {
            background: var(--primary-light-bg);
            color: var(--primary-deep);
            border-color: var(--primary-deep);
        }
        .btn-small.btn-solid {
            background: var(--accent-orange);
            color: #fff;
            border: none;
        }
        .btn-small.btn-solid:hover {
            background: #e08e2b;
            color: #fff;
            transform: translateY(-1px);
        }
        .feature-strip {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 32px 28px;
            margin-top: 40px;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 24px;
        }
        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-light-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
            color: var(--primary);
        }
        .feature-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
        }
        .feature-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.75;
        }
        .how-it-works {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 36px 32px;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 28px;
        }
        .step-item {
            position: relative;
            padding-left: 20px;
            border-left: 3px solid var(--primary-light-bg);
            transition: var(--transition);
        }
        .step-item:hover {
            border-left-color: var(--accent-orange);
        }
        .step-number {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            display: block;
            margin-bottom: 8px;
        }
        .step-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.75;
        }
        .community-activity {
            background: var(--primary-deep);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            margin-top: 40px;
            position: relative;
            overflow: hidden;
        }
        .community-activity::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(242, 163, 60, 0.18);
            pointer-events: none;
        }
        .community-activity h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }
        .community-activity p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 680px;
            margin: 0 0 20px;
            line-height: 1.9;
            position: relative;
            z-index: 1;
        }
        .community-activity .btn-primary {
            position: relative;
            z-index: 1;
        }
        .faq-section {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 36px 32px;
        }
        .faq-list {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-item summary {
            cursor: pointer;
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-deep);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 4px 0;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-icon {
            background: var(--accent-orange);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            padding: 10px 0 4px 0;
            max-width: 720px;
        }
        .conversion-section {
            background: var(--primary-light-bg);
            border-radius: var(--radius-lg);
            padding: 44px 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .conversion-benefits {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .conversion-benefits h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-deep);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .conversion-benefits p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.85;
        }
        .benefit-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text);
        }
        .benefit-item .benefit-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--surface);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--data-teal);
            font-weight: 700;
            flex-shrink: 0;
        }
        .conversion-form-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 28px 26px;
        }
        .conversion-form-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 18px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 15px;
            background: var(--bg);
            transition: var(--transition);
            color: var(--text);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(29, 94, 143, 0.15);
            background: var(--surface);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-submit {
            width: 100%;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 20px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
        }
        .form-submit:hover {
            background: #e08e2b;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(242, 163, 60, 0.3);
        }
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.82);
            padding: 56px 0 0;
            margin-top: 80px;
        }
        .site-footer .grid-container {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: space-between;
        }
        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .footer-desc {
            font-size: 14px;
            max-width: 340px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.68);
            margin: 0;
        }
        .footer-col {
            min-width: 160px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.68);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-orange);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 40px;
            padding: 18px 0;
        }
        .footer-bottom .grid-container {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
        }
        .footer-bottom p {
            font-size: 13px;
            margin: 0;
            color: rgba(255, 255, 255, 0.55);
            white-space: nowrap;
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.68);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-orange);
        }
        @media (max-width: 1024px) {
            .site-header .grid-container {
                flex-wrap: wrap;
                gap: 12px;
                padding: 10px 20px;
            }
            .main-nav {
                order: 3;
                flex-basis: 100%;
                width: 100%;
                justify-content: flex-start;
                padding-bottom: 6px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .conversion-section {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 32px 24px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .page-hero {
                padding: 40px 0 36px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .page-hero .hero-sub {
                font-size: 15px;
            }
            .event-grid {
                grid-template-columns: 1fr;
            }
            .feature-strip {
                grid-template-columns: 1fr;
                padding: 24px 20px;
            }
            .how-it-works {
                grid-template-columns: 1fr;
                padding: 24px 20px;
            }
            .community-activity {
                padding: 28px 22px;
            }
            .faq-section {
                padding: 24px 18px;
            }
            .footer-bottom .grid-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .header-cta .btn-primary {
                padding: 8px 14px;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .site-header .grid-container {
                flex-wrap: wrap;
                gap: 8px;
                padding: 8px 16px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .brand-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 15px;
                border-radius: 8px;
            }
            .header-cta .btn-primary {
                font-size: 12px;
                padding: 7px 12px;
            }
            .main-nav {
                gap: 4px;
            }
            .nav-chip {
                padding: 7px 12px;
                font-size: 13px;
            }
            .page-hero h1 {
                font-size: 21px;
            }
            .breadcrumb {
                font-size: 12px;
                padding: 10px 0;
            }
            .event-card-body {
                padding: 16px 16px 14px;
            }
            .section-title {
                font-size: 22px;
            }
        }