/* roulang page: index */
:root {
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --primary: #2F6BFF;
            --primary-dark: #1E4FD6;
            --cyan: #38BDF8;
            --text: #1E293B;
            --text-secondary: #64748B;
            --border: #DCE6F2;
            --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 32px rgba(37, 99, 235, 0.12);
            --radius-card: 18px;
            --radius-btn: 11px;
            --radius-chip: 999px;
            --section-gap: 84px;
            --card-pad: 28px;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Inter', 'Helvetica Neue', system-ui, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
            border-radius: 12px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        button {
            font-family: var(--font-cn);
            cursor: pointer;
            border: none;
            background: none;
            font-size: 15px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 20px;
        }
        .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo span {
            color: var(--primary);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: flex-end;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .main-nav a {
            font-size: 14.5px;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 6px 4px;
            position: relative;
            white-space: nowrap;
            transition: color 0.2s ease;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-divider {
            width: 1px;
            height: 28px;
            background: var(--border);
            margin: 0 6px;
        }
        .phase-chips {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .phase-chip {
            height: 34px;
            padding: 0 16px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            background: var(--surface);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .phase-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .phase-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(47, 107, 255, 0.28);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--surface);
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 3px;
            transition: all 0.3s ease;
        }
        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            max-height: calc(100vh - 70px);
            overflow-y: auto;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 18px 40px rgba(15, 23, 42, 0.1);
            z-index: 99;
            padding: 20px 28px 32px;
            flex-direction: column;
            gap: 16px;
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer .phase-chips {
            flex-wrap: wrap;
            margin-bottom: 4px;
        }
        .mobile-drawer .main-nav {
            flex-direction: column;
            gap: 6px;
        }
        .mobile-drawer .main-nav a {
            padding: 12px 10px;
            font-size: 16px;
            border-radius: 10px;
        }
        .mobile-drawer .main-nav a.active {
            background: rgba(47, 107, 255, 0.08);
        }
        .mobile-drawer .main-nav a.active::after {
            display: none;
        }
        /* Hero */
        .hero {
            padding: 72px 0 56px;
            background: linear-gradient(180deg, #F8FAFE 0%, #F5F8FC 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(47, 107, 255, 0.07), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content h1 {
            font-size: 36px;
            line-height: 1.45;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .hero-content .hero-sub {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 28px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 30px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(47, 107, 255, 0.22);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 10px 26px rgba(47, 107, 255, 0.32);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-secondary {
            background: var(--surface);
            color: var(--text);
            border: 1.5px solid var(--border);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(47, 107, 255, 0.1);
        }
        .hero-form-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-hover);
            padding: 28px 30px;
            border: 1px solid var(--border);
        }
        .hero-form-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .hero-form-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 18px;
        }
        .form-group {
            margin-bottom: 14px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 5px;
        }
        .form-group input {
            width: 100%;
            height: 48px;
            border: 1.5px solid var(--border);
            border-radius: 10px;
            padding: 0 16px;
            font-size: 15px;
            font-family: var(--font-cn);
            background: #FAFBFE;
            transition: all 0.25s ease;
        }
        .form-group input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(47, 107, 255, 0.08);
            outline: none;
        }
        .form-submit {
            width: 100%;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            margin-top: 4px;
        }
        .form-submit:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(47, 107, 255, 0.28);
        }
        /* Sections */
        main {
            display: block;
        }
        .section {
            padding: var(--section-gap) 0;
        }
        .section-alt {
            background: #F0F4FA;
        }
        .section-head {
            margin-bottom: 36px;
        }
        .section-head h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 720px;
        }
        /* KPI */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .kpi-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            padding: 22px 22px 20px;
            border-left: 4px solid var(--primary);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .kpi-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .kpi-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            margin-bottom: 6px;
        }
        .kpi-value {
            font-size: 32px;
            font-weight: 700;
            font-family: var(--font-num);
            color: var(--text);
            line-height: 1.2;
            display: flex;
            align-items: baseline;
            gap: 6px;
        }
        .kpi-unit {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .kpi-trend {
            font-size: 13px;
            margin-top: 6px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 600;
        }
        .kpi-trend.up {
            color: #16A34A;
        }
        .kpi-trend.down {
            color: #DC2626;
        }
        .kpi-desc {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 8px;
            line-height: 1.6;
        }
        /* Services */
        .services-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 18px;
        }
        .service-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            padding: var(--card-pad);
            transition: all 0.3s ease;
            border: 1px solid rgba(220, 230, 242, 0.5);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .service-card.featured {
            grid-row: span 2;
            background: linear-gradient(160deg, #FFFFFF 55%, #F0F5FF 100%);
        }
        .service-card .coverpic-wrap {
            width: 100%;
            aspect-ratio: 16/9;
            background: #E8EDF5;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .service-card .coverpic-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 12px;
        }
        .service-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
            line-height: 1.45;
        }
        .service-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 12px;
            flex: 1;
        }
        .service-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.25s ease;
        }
        .service-link:hover {
            gap: 8px;
            color: var(--primary-dark);
        }
        /* Comparison */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 18px;
        }
        .comparison-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            padding: 26px 24px;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        .comparison-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .comparison-card.highlight {
            border-color: var(--primary);
            background: linear-gradient(170deg, #FFFFFF 60%, #F0F5FF 100%);
            position: relative;
        }
        .comparison-card.highlight::before {
            content: '推荐模式';
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }
        .comparison-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text);
        }
        .comparison-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .comparison-card ul li {
            font-size: 14px;
            color: var(--text-secondary);
            padding-left: 20px;
            position: relative;
            line-height: 1.65;
        }
        .comparison-card ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }
        .comparison-card .score {
            font-size: 28px;
            font-weight: 700;
            font-family: var(--font-num);
            color: var(--primary);
            margin: 12px 0 4px;
        }
        .comparison-card .score-label {
            font-size: 13px;
            color: var(--text-secondary);
        }
        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 32px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 3px;
            background: var(--border);
            border-radius: 8px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding-left: 22px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 8px;
            width: 13px;
            height: 13px;
            background: var(--primary);
            border-radius: 50%;
            box-shadow: 0 0 0 4px rgba(47, 107, 255, 0.14);
        }
        .timeline-item .t-time {
            font-size: 13px;
            color: var(--cyan);
            font-weight: 600;
            display: block;
            margin-bottom: 4px;
        }
        .timeline-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
        }
        .timeline-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 620px;
        }
        /* Brand intro */
        .brand-intro {
            background: var(--surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            padding: 36px 38px;
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .brand-intro::after {
            content: '';
            position: absolute;
            right: -60px;
            bottom: -60px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.06), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .brand-intro h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
            position: relative;
            z-index: 1;
        }
        .brand-intro p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .brand-intro p:last-child {
            margin-bottom: 0;
        }
        /* News list */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .news-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid rgba(220, 230, 242, 0.5);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .news-cover {
            width: 100%;
            aspect-ratio: 16/9;
            background: #E8EDF5;
            overflow: hidden;
        }
        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .news-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-meta {
            display: flex;
            gap: 10px;
            align-items: center;
            font-size: 12.5px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .news-tag {
            background: rgba(47, 107, 255, 0.08);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
        }
        .news-card h3 {
            font-size: 16.5px;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.5;
            color: var(--text);
            transition: color 0.2s ease;
        }
        .news-card:hover h3 {
            color: var(--primary);
        }
        .news-card p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* Assurance */
        .assurance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .assurance-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            padding: 24px 22px;
            text-align: center;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        .assurance-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .assurance-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(47, 107, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 22px;
            color: var(--primary);
        }
        .assurance-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
        }
        .assurance-card p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        /* Quick answers */
        .quick-answers-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .quick-answer-item {
            background: var(--surface);
            border-radius: 14px;
            box-shadow: var(--shadow);
            padding: 18px 20px;
            border: 1px solid var(--border);
            transition: all 0.25s ease;
        }
        .quick-answer-item:hover {
            border-color: var(--primary);
        }
        .quick-answer-item .qa-q {
            font-size: 14.5px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        .quick-answer-item .qa-a {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 840px;
        }
        .faq-item {
            background: var(--surface);
            border-radius: 14px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all 0.25s ease;
        }
        .faq-item:hover {
            border-color: rgba(47, 107, 255, 0.35);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: background 0.2s ease;
        }
        .faq-question:hover {
            background: #FAFBFE;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(47, 107, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            transition: transform 0.3s ease;
            font-weight: 500;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 22px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 20px;
        }
        /* Form section */
        .cta-form-section {
            background: linear-gradient(170deg, #F0F5FF 0%, #F5F8FC 100%);
            border-radius: var(--radius-card);
            padding: 36px 38px;
            border: 1px solid var(--border);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .cta-form-section h2 {
            font-size: 23px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .cta-form-section p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .cta-form input {
            height: 48px;
            border: 1.5px solid var(--border);
            border-radius: 10px;
            padding: 0 16px;
            font-size: 15px;
            font-family: var(--font-cn);
            background: #fff;
            transition: all 0.25s ease;
        }
        .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(47, 107, 255, 0.08);
            outline: none;
        }
        .cta-form .form-submit {
            margin-top: 0;
        }
        .btn-text {
            color: var(--text-secondary);
            font-size: 13.5px;
            font-weight: 500;
            transition: color 0.2s ease;
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .btn-text:hover {
            color: var(--primary);
        }
        /* Scenarios */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .scenario-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scenario-cover {
            width: 100%;
            aspect-ratio: 16/9;
            background: #E8EDF5;
            overflow: hidden;
        }
        .scenario-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .scenario-body {
            padding: 18px 20px 20px;
        }
        .scenario-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
        }
        .scenario-body p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .scenario-link {
            font-size: 13.5px;
            font-weight: 600;
            color: var(--primary);
        }
        /* Resources */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .resource-card {
            background: var(--surface);
            border-radius: 14px;
            box-shadow: var(--shadow);
            padding: 22px 20px;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            text-align: left;
        }
        .resource-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(47, 107, 255, 0.3);
        }
        .resource-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(56, 189, 248, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--cyan);
            margin-bottom: 10px;
        }
        .resource-card h3 {
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 5px;
        }
        .resource-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .resource-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }
        /* Partners */
        .partners-strip {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px 32px;
            background: var(--surface);
            border-radius: 14px;
            box-shadow: var(--shadow);
            padding: 20px 28px;
            border: 1px solid var(--border);
        }
        .partners-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .partner-name {
            font-size: 15px;
            font-weight: 600;
            color: #94A3B8;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }
        /* Footer */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 32px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 28px;
            margin-bottom: 30px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 20px;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 13.5px;
            line-height: 1.75;
            color: #94A3B8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 12px;
        }
        .footer-col a {
            display: block;
            font-size: 13.5px;
            color: #94A3B8;
            margin-bottom: 8px;
            transition: color 0.2s ease;
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.2);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            align-items: center;
            justify-content: space-between;
            font-size: 12.5px;
            color: #94A3B8;
        }
        .footer-bottom a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .header-inner {
                height: 64px;
            }
            .main-nav {
                gap: 12px;
            }
            .main-nav a {
                font-size: 13.5px;
            }
            .phase-chip {
                padding: 0 12px;
                font-size: 12px;
                height: 30px;
            }
            .nav-divider {
                display: none;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: 1fr 1fr;
            }
            .service-card.featured {
                grid-row: span 1;
                grid-column: span 2;
            }
            .comparison-grid {
                grid-template-columns: 1fr 1fr;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .assurance-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .resource-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-form-section {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
            .section {
                padding: 56px 0;
            }
            .header-main-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero {
                padding: 48px 0 40px;
            }
            .hero-content h1 {
                font-size: 25px;
            }
            .hero-content .hero-sub {
                font-size: 14.5px;
            }
            .btn {
                height: 44px;
                padding: 0 22px;
                font-size: 14px;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .service-card.featured {
                grid-row: span 1;
                grid-column: span 1;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .quick-answers-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .assurance-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .resource-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .brand-intro {
                padding: 24px 20px;
            }
            .brand-intro h2 {
                font-size: 20px;
            }
            .cta-form-section {
                padding: 24px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .timeline {
                padding-left: 24px;
            }
            .timeline-item::before {
                left: -20px;
                width: 11px;
                height: 11px;
            }
            .timeline::before {
                left: 5px;
            }
            .header-inner {
                height: 60px;
            }
            .mobile-drawer {
                top: 60px;
                max-height: calc(100vh - 60px);
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 21px;
                line-height: 1.5;
            }
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .kpi-card {
                padding: 16px 14px;
                border-radius: 14px;
            }
            .kpi-value {
                font-size: 24px;
            }
            .kpi-desc {
                font-size: 12px;
            }
            .assurance-grid {
                grid-template-columns: 1fr;
            }
            .resource-grid {
                grid-template-columns: 1fr;
            }
            .section-head h2 {
                font-size: 21px;
            }
            .partners-strip {
                gap: 12px 16px;
                padding: 16px 18px;
            }
            .partner-name {
                font-size: 13px;
            }
            .phase-chips {
                flex-wrap: wrap;
                gap: 6px;
            }
            .phase-chip {
                height: 28px;
                padding: 0 10px;
                font-size: 11.5px;
            }
            .hero-form-card {
                padding: 20px 18px;
            }
        }

/* roulang page: category2 */
:root {
  --bg: #F5F8FC;
  --surface: #FFFFFF;
  --primary: #2F6BFF;
  --primary-dark: #1E4FD6;
  --cyan: #38BDF8;
  --text: #1E293B;
  --text-secondary: #64748B;
  --border: #DCE6F2;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 12px 32px rgba(37, 99, 235, 0.12);
  --radius-card: 18px;
  --radius-btn: 11px;
  --radius-chip: 999px;
  --section-gap: 84px;
  --card-pad: 28px;
  --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-num: 'Inter', 'Helvetica Neue', system-ui, sans-serif;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--primary-dark);
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
button {
  font-family: var(--font-cn);
  cursor: pointer;
  border: none;
  background: none;
  font-size: 15px;
}
input,
select {
  font-family: var(--font-cn);
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
}
/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 20px;
}
.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.logo span {
  color: var(--primary);
}
.header-right {
  display: flex;
  align-items: center;
  gap: 24px;
  flex: 1;
  justify-content: flex-end;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}
.main-nav a {
  font-size: 14.5px;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 6px 4px;
  position: relative;
  white-space: nowrap;
  transition: color 0.2s ease;
}
.main-nav a:hover {
  color: var(--primary);
}
.main-nav a.active {
  color: var(--primary);
  font-weight: 600;
}
.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2.5px;
  background: var(--primary);
  border-radius: 4px;
}
.nav-divider {
  width: 1px;
  height: 28px;
  background: var(--border);
  margin: 0 6px;
}
.phase-chips {
  display: flex;
  align-items: center;
  gap: 8px;
}
.phase-chip {
  height: 34px;
  padding: 0 16px;
  border-radius: var(--radius-chip);
  font-size: 13px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  background: var(--surface);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: all 0.25s ease;
  white-space: nowrap;
}
.phase-chip:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}
.phase-chip.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(47, 107, 255, 0.28);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 3px;
  transition: all 0.3s ease;
}
/* Mobile drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  width: 100%;
  max-height: calc(100vh - 70px);
  overflow-y: auto;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.1);
  z-index: 99;
  padding: 20px 28px 32px;
  flex-direction: column;
  gap: 16px;
}
.mobile-drawer.open {
  display: flex;
}
.mobile-drawer .phase-chips {
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.mobile-drawer .main-nav {
  flex-direction: column;
  gap: 6px;
}
.mobile-drawer .main-nav a {
  padding: 12px 10px;
  font-size: 16px;
  border-radius: 10px;
}
.mobile-drawer .main-nav a.active {
  background: rgba(47, 107, 255, 0.08);
}
/* Breadcrumb */
.breadcrumb-bar {
  padding: 20px 0 0;
  background: transparent;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--text-secondary);
  font-weight: 500;
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  color: var(--border);
  font-size: 12px;
}
.breadcrumb .current {
  color: var(--primary);
  font-weight: 600;
}
/* Page header */
.page-header-section {
  padding: 36px 0 28px;
  background: transparent;
}
.page-header-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 14px;
  color: var(--text);
  letter-spacing: 0.01em;
}
.page-intro {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin: 0;
  max-width: 860px;
}
/* Filter bar */
.filter-bar-section {
  padding: 20px 0;
}
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 20px;
  box-shadow: var(--shadow);
  flex-wrap: wrap;
}
.filter-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.filter-label {
  font-size: 13.5px;
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
}
.filter-btn-group {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.filter-btn {
  height: 34px;
  padding: 0 14px;
  border-radius: var(--radius-chip);
  font-size: 13px;
  font-weight: 500;
  background: var(--bg);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}
.filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.filter-select {
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 13.5px;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 130px;
}
.filter-select:hover {
  border-color: var(--primary);
}
.filter-search {
  display: flex;
  align-items: center;
  gap: 8px;
}
.filter-search input {
  height: 36px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13.5px;
  background: var(--bg);
  color: var(--text);
  width: 180px;
  transition: all 0.2s ease;
}
.filter-search input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.1);
}
.filter-search button {
  height: 36px;
  padding: 0 16px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.filter-search button:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 16px rgba(47, 107, 255, 0.25);
  transform: translateY(-1px);
}
/* Main content list */
.list-section {
  padding: 24px 0 40px;
}
.content-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.content-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
}
.content-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.content-card .card-cover {
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: 0;
  background: var(--bg);
  flex-shrink: 0;
}
.content-card .card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.4s ease;
}
.content-card:hover .card-cover img {
  transform: scale(1.04);
}
.card-body {
  padding: 22px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-tags {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.card-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-chip);
  background: rgba(47, 107, 255, 0.08);
  color: var(--primary);
  border: 1px solid rgba(47, 107, 255, 0.15);
}
.card-tag.secondary {
  background: rgba(56, 189, 248, 0.08);
  color: #0E8DB8;
  border-color: rgba(56, 189, 248, 0.2);
}
.card-tag.muted {
  background: var(--bg);
  color: var(--text-secondary);
  border-color: var(--border);
}
.card-title {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
  margin: 0 0 10px;
  color: var(--text);
  transition: color 0.2s ease;
}
.content-card:hover .card-title {
  color: var(--primary);
}
.card-summary {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0 0 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  padding-top: 14px;
  gap: 10px;
  flex-wrap: wrap;
}
.card-meta .date {
  font-family: var(--font-num);
  letter-spacing: 0.02em;
}
.card-meta .read-more {
  font-weight: 600;
  font-size: 13px;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s ease;
}
.card-meta .read-more:hover {
  color: var(--primary-dark);
}
/* Spotlight section */
.spotlight-section {
  padding: 40px 0;
}
.section-heading {
  margin-bottom: 28px;
}
.section-heading h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--text);
}
.section-heading p {
  font-size: 14.5px;
  color: var(--text-secondary);
  margin: 0;
}
.spotlight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.spotlight-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s ease, transform 0.25s ease;
  display: flex;
  flex-direction: column;
}
.spotlight-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.spotlight-card .spotlight-cover {
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: 0;
  background: var(--bg);
}
.spotlight-card .spotlight-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.4s ease;
}
.spotlight-card:hover .spotlight-cover img {
  transform: scale(1.04);
}
.spotlight-body {
  padding: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.spotlight-body h3 {
  font-size: 16.5px;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--text);
  transition: color 0.2s ease;
}
.spotlight-card:hover .spotlight-body h3 {
  color: var(--primary);
}
.spotlight-body p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0 0 12px;
  flex: 1;
}
.spotlight-link {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.spotlight-link:hover {
  color: var(--primary-dark);
}
/* Glossary section */
.glossary-section {
  padding: 40px 0;
}
.glossary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.glossary-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.25s ease;
}
.glossary-item:hover {
  box-shadow: var(--shadow-hover);
}
.glossary-item .glossary-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(47, 107, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  color: var(--primary);
  font-size: 18px;
}
.glossary-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--text);
}
.glossary-item p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
}
/* Recommended reading */
.recommended-section {
  padding: 40px 0;
}
.recommended-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.recommended-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: box-shadow 0.25s ease, transform 0.2s ease;
}
.recommended-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.recommended-item .rec-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(56, 189, 248, 0.08);
  color: #0E8DB8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.recommended-item .rec-content {
  flex: 1;
}
.recommended-item h3 {
  font-size: 15.5px;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--text);
  transition: color 0.2s ease;
}
.recommended-item:hover h3 {
  color: var(--primary);
}
.recommended-item p {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0 0 6px;
}
.recommended-item .rec-date {
  font-size: 12.5px;
  color: var(--text-secondary);
  font-family: var(--font-num);
  letter-spacing: 0.02em;
}
/* CTA section */
.cta-section {
  padding: 40px 0 60px;
}
.cta-panel {
  background: linear-gradient(135deg, rgba(47, 107, 255, 0.04) 0%, rgba(56, 189, 248, 0.04) 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 42px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
  box-shadow: var(--shadow);
}
.cta-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
}
.cta-content p {
  font-size: 15px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.8;
  max-width: 600px;
}
.cta-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.cta-btn-primary {
  height: 46px;
  padding: 0 28px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 6px 18px rgba(47, 107, 255, 0.22);
}
.cta-btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 10px 26px rgba(47, 107, 255, 0.3);
  transform: translateY(-2px);
}
.cta-btn-secondary {
  height: 46px;
  padding: 0 24px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.cta-btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}
/* Pagination */
.pagination-section {
  padding: 16px 0 50px;
}
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.pagination button,
.pagination a {
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  background: var(--surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}
.pagination button:hover,
.pagination a:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.pagination button.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(47, 107, 255, 0.25);
}
.pagination .page-ellipsis {
  min-width: 30px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 15px;
  border: none;
  background: none;
}
/* Footer */
.site-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
  box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.03);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}
.footer-brand .logo {
  margin-bottom: 14px;
  font-size: 20px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0;
  max-width: 340px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 14px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  transition: color 0.2s ease;
}
.footer-col a:hover {
  color: var(--primary);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-secondary);
}
.footer-bottom a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}
.footer-bottom a:hover {
  color: var(--primary);
}
/* Responsive */
@media (max-width: 1024px) {
  .content-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .spotlight-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .glossary-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .recommended-list {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .main-nav,
  .nav-divider,
  .phase-chips {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .header-right {
    gap: 12px;
  }
  .page-h1 {
    font-size: 28px;
  }
  .filter-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .filter-search input {
    width: 100%;
  }
  .content-card-grid {
    grid-template-columns: 1fr;
  }
  .spotlight-grid {
    grid-template-columns: 1fr;
  }
  .glossary-grid {
    grid-template-columns: 1fr;
  }
  .cta-panel {
    padding: 32px 28px;
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }
  .page-h1 {
    font-size: 24px;
  }
  .filter-btn-group {
    gap: 4px;
  }
  .filter-btn {
    height: 31px;
    padding: 0 11px;
    font-size: 12px;
  }
  .filter-search {
    flex-direction: column;
    width: 100%;
  }
  .filter-search input {
    width: 100%;
  }
  .cta-panel {
    padding: 26px 20px;
  }
  .cta-actions {
    flex-direction: column;
    width: 100%;
  }
  .cta-btn-primary,
  .cta-btn-secondary {
    width: 100%;
    justify-content: center;
  }
  .pagination button,
  .pagination a {
    min-width: 35px;
    height: 36px;
    padding: 0 8px;
    font-size: 13px;
  }
}

/* roulang page: category1 */
:root {
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --primary: #2F6BFF;
            --primary-dark: #1E4FD6;
            --cyan: #38BDF8;
            --text: #1E293B;
            --text-secondary: #64748B;
            --border: #DCE6F2;
            --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 32px rgba(37, 99, 235, 0.12);
            --radius-card: 18px;
            --radius-btn: 11px;
            --radius-chip: 999px;
            --section-gap: 84px;
            --card-pad: 28px;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Inter', 'Helvetica Neue', system-ui, sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

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

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            display: block;
            max-width: 100%;
            height: auto;
            border-radius: 12px;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        button {
            font-family: var(--font-cn);
            cursor: pointer;
            border: none;
            background: none;
            font-size: 15px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 20px;
        }

        .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo span {
            color: var(--primary);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 18px;
            flex: 1;
            justify-content: flex-end;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .main-nav a {
            font-size: 14.5px;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 6px 4px;
            position: relative;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

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

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav-divider {
            width: 1px;
            height: 28px;
            background: var(--border);
            margin: 0 2px;
            flex-shrink: 0;
        }

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

        .phase-chip {
            height: 34px;
            padding: 0 16px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            background: var(--surface);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .phase-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }

        .phase-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(47, 107, 255, 0.28);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--surface);
            flex-shrink: 0;
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 3px;
            transition: all 0.3s ease;
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            max-height: calc(100vh - 70px);
            overflow-y: auto;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 18px 40px rgba(15, 23, 42, 0.1);
            z-index: 99;
            padding: 20px 28px 32px;
            flex-direction: column;
            gap: 16px;
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer .phase-chips {
            flex-wrap: wrap;
            margin-bottom: 4px;
        }

        .mobile-drawer .main-nav {
            flex-direction: column;
            gap: 6px;
        }

        .mobile-drawer .main-nav a {
            padding: 12px 10px;
            font-size: 16px;
            border-radius: 10px;
        }

        .mobile-drawer .main-nav a.active {
            background: rgba(47, 107, 255, 0.08);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            padding: 22px 0 0;
        }

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

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

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

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

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

        /* Category Hero */
        .category-hero {
            padding: 32px 0 8px;
        }

        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .category-intro {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 780px;
            line-height: 1.9;
            margin-bottom: 10px;
        }

        /* Filter Bar */
        .filter-bar {
            padding: 22px 0 6px;
        }

        .filter-bar-inner {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 16px 20px;
            box-shadow: var(--shadow);
        }

        .filter-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
            margin-right: 4px;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-tag {
            height: 36px;
            padding: 0 18px;
            border-radius: var(--radius-chip);
            font-size: 13.5px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            background: var(--bg);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all 0.22s ease;
            cursor: pointer;
            user-select: none;
        }

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

        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 3px 10px rgba(47, 107, 255, 0.22);
        }

        .filter-sort {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .filter-sort select {
            height: 36px;
            padding: 0 14px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--surface);
            font-family: var(--font-cn);
            font-size: 13.5px;
            color: var(--text);
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2364748B' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 34px;
        }

        .filter-sort select:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Activity List */
        .activity-section {
            padding: 28px 0 0;
        }

        .activity-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

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

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

        .activity-card-img {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #EAF1FA;
        }

        .activity-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

        .activity-card:hover .activity-card-img img {
            transform: scale(1.04);
        }

        .activity-stage-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            height: 28px;
            padding: 0 14px;
            border-radius: var(--radius-chip);
            font-size: 12px;
            font-weight: 600;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            border: 1px solid rgba(47, 107, 255, 0.3);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        .activity-stage-tag.live {
            background: rgba(47, 107, 255, 0.9);
            color: #fff;
            border-color: var(--primary);
        }

        .activity-stage-tag.warm {
            background: rgba(255, 255, 255, 0.92);
            color: #D97706;
            border-color: rgba(217, 119, 6, 0.3);
        }

        .activity-stage-tag.replay {
            background: rgba(255, 255, 255, 0.85);
            color: var(--text-secondary);
            border-color: rgba(100, 116, 139, 0.3);
        }

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

        .activity-card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.55;
            margin-bottom: 10px;
            transition: color 0.2s ease;
        }

        .activity-card:hover .activity-card-body h3 {
            color: var(--primary);
        }

        .activity-card-desc {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .activity-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-secondary);
        }

        .activity-card-meta .date {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .activity-card-meta .tag-list {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        .activity-card-meta .mini-tag {
            font-size: 12px;
            padding: 2px 10px;
            border-radius: var(--radius-chip);
            background: var(--bg);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            white-space: nowrap;
        }

        /* Support Section 1 - Scenario */
        .support-scenario {
            padding: 40px 0 0;
        }

        .support-scenario h2,
        .support-data h2,
        .support-recommend h2,
        .support-faq h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 22px;
            line-height: 1.45;
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .scenario-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 22px;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            display: flex;
            gap: 16px;
            align-items: center;
        }

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

        .scenario-card .scenario-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(47, 107, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .scenario-card .scenario-info h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .scenario-card .scenario-info p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Support Data */
        .support-data {
            padding: 40px 0 0;
        }

        .data-summary-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .data-summary-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 22px 24px;
            box-shadow: var(--shadow);
            border-left: 4px solid var(--primary);
            transition: all 0.3s ease;
        }

        .data-summary-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .data-summary-card .data-label {
            font-size: 13.5px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            font-weight: 500;
        }

        .data-summary-card .data-desc {
            font-size: 15px;
            color: var(--text);
            line-height: 1.75;
            font-weight: 500;
        }

        /* Support Recommend */
        .support-recommend {
            padding: 40px 0 0;
        }

        .recommend-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        .recommend-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 16px 20px;
            box-shadow: var(--shadow);
            transition: all 0.25s ease;
        }

        .recommend-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(47, 107, 255, 0.3);
        }

        .recommend-item .rec-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--cyan);
            flex-shrink: 0;
        }

        .recommend-item .rec-title {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            line-height: 1.6;
        }

        .recommend-item .rec-title:hover {
            color: var(--primary);
        }

        /* FAQ */
        .support-faq {
            padding: 40px 0 0;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all 0.25s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: color 0.2s ease;
        }

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

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-secondary);
            flex-shrink: 0;
            transition: all 0.3s ease;
        }

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

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

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

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
        }

        /* CTA */
        .support-cta {
            padding: 40px 0 0;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(47, 107, 255, 0.06), rgba(56, 189, 248, 0.04));
            border: 1px solid var(--border);
            border-radius: 18px;
            padding: 32px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: var(--shadow);
        }

        .cta-box .cta-text h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .cta-box .cta-text p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
            transform: translateY(-2px);
            color: #fff;
        }

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

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

        /* Pagination */
        .pagination-section {
            padding: 32px 0 12px;
        }

        .pagination {
            display: flex;
            align-items: center;
            gap: 8px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            background: var(--surface);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all 0.22s ease;
            user-select: none;
        }

        .pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }

        .pagination .current {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .pagination .dots {
            background: transparent;
            border: none;
            color: var(--text-secondary);
        }

        /* Footer */
        .site-footer {
            margin-top: 64px;
            background: #0F1E3A;
            color: #B8C5D9;
            padding: 56px 0 28px;
        }

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

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
            font-size: 22px;
        }

        .footer-brand .logo span {
            color: var(--cyan);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: #B8C5D9;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 14px;
            font-weight: 600;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: #B8C5D9;
            padding: 5px 0;
            transition: color 0.2s ease;
        }

        .footer-col a:hover {
            color: var(--cyan);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            font-size: 13px;
            color: #8CA0B9;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
        }

        .footer-bottom a {
            color: #8CA0B9;
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: var(--cyan);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .header-right {
                gap: 12px;
            }
            .main-nav {
                gap: 10px;
            }
            .main-nav a {
                font-size: 13.5px;
            }
            .phase-chip {
                padding: 0 12px;
                font-size: 12.5px;
            }
            .activity-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-summary-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .mobile-drawer {
                top: 64px;
                max-height: calc(100vh - 64px);
            }
            .header-right {
                gap: 10px;
            }
            .main-nav {
                display: none;
            }
            .nav-divider {
                display: none;
            }
            .phase-chips {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .activity-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .activity-card-body h3 {
                font-size: 17px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .data-summary-grid {
                grid-template-columns: 1fr;
            }
            .recommend-list {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 24px 22px;
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .filter-bar-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .filter-sort {
                margin-left: 0;
                width: 100%;
            }
            .filter-sort select {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .category-hero h1 {
                font-size: 23px;
                line-height: 1.5;
            }
            .category-intro {
                font-size: 14.5px;
                line-height: 1.85;
            }
            .activity-card-body {
                padding: 16px 16px 18px;
            }
            .activity-card-body h3 {
                font-size: 16px;
            }
            .activity-card-desc {
                font-size: 13.5px;
            }
            .filter-tag {
                height: 32px;
                padding: 0 14px;
                font-size: 12.5px;
            }
            .filter-label {
                font-size: 13px;
            }
            .support-scenario h2,
            .support-data h2,
            .support-recommend h2,
            .support-faq h2 {
                font-size: 20px;
            }
            .cta-box .cta-text h2 {
                font-size: 18px;
            }
            .btn {
                height: 40px;
                padding: 0 20px;
                font-size: 14px;
            }
            .pagination a,
            .pagination span {
                min-width: 34px;
                height: 34px;
                font-size: 13px;
                padding: 0 8px;
            }
            .footer-bottom {
                gap: 4px;
                font-size: 12.5px;
            }
        }

/* roulang page: category3 */
:root {
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --primary: #2F6BFF;
            --primary-dark: #1E4FD6;
            --cyan: #38BDF8;
            --text: #1E293B;
            --text-secondary: #64748B;
            --border: #DCE6F2;
            --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 32px rgba(37, 99, 235, 0.12);
            --radius-card: 18px;
            --radius-btn: 11px;
            --radius-chip: 999px;
            --section-gap: 84px;
            --card-pad: 28px;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Inter', 'Helvetica Neue', system-ui, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
            border-radius: 12px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        button {
            font-family: var(--font-cn);
            cursor: pointer;
            border: none;
            background: none;
            font-size: 15px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 20px;
        }
        .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo span {
            color: var(--primary);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: flex-end;
            min-width: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .main-nav a {
            font-size: 14.5px;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 6px 4px;
            position: relative;
            white-space: nowrap;
            transition: color 0.2s ease;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-divider {
            width: 1px;
            height: 28px;
            background: var(--border);
            margin: 0 6px;
            flex-shrink: 0;
        }
        .phase-chips {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .phase-chip {
            height: 34px;
            padding: 0 16px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            background: var(--surface);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all 0.25s ease;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .phase-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .phase-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(47, 107, 255, 0.28);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--surface);
            flex-shrink: 0;
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 3px;
            transition: all 0.3s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            max-height: calc(100vh - 70px);
            overflow-y: auto;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 18px 40px rgba(15, 23, 42, 0.1);
            z-index: 99;
            padding: 20px 28px 32px;
            flex-direction: column;
            gap: 16px;
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer .phase-chips {
            flex-wrap: wrap;
            margin-bottom: 4px;
        }
        .mobile-drawer .main-nav {
            flex-direction: column;
            gap: 6px;
        }
        .mobile-drawer .main-nav a {
            padding: 12px 10px;
            font-size: 16px;
            border-radius: 10px;
        }
        .mobile-drawer .main-nav a.active {
            background: rgba(47, 107, 255, 0.08);
        }
        /* Breadcrumb */
        .breadcrumb-section {
            padding: 32px 0 6px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--border);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }
        /* Category Header */
        .category-header {
            padding: 24px 0 0;
        }
        .category-header h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .category-header .category-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 880px;
            line-height: 1.9;
        }
        /* Filter Bar */
        .filter-bar {
            margin-top: 32px;
            padding: 18px 20px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            box-shadow: var(--shadow);
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .filter-bar .filter-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
            white-space: nowrap;
        }
        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-option {
            height: 36px;
            padding: 0 16px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            background: var(--surface);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all 0.25s ease;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .filter-option:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-option.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .filter-select {
            height: 36px;
            padding: 0 12px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--text-secondary);
            font-size: 13px;
            font-family: var(--font-cn);
            outline: none;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            cursor: pointer;
        }
        .filter-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.12);
        }
        /* Services List */
        .services-list-section {
            padding: 48px 0 0;
        }
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .service-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(47, 107, 255, 0.3);
        }
        .service-card .card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
            background: #eef3fb;
        }
        .service-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }
        .service-card:hover .card-image img {
            transform: scale(1.03);
        }
        .service-card .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .service-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .card-tag {
            display: inline-flex;
            align-items: center;
            height: 26px;
            padding: 0 12px;
            border-radius: var(--radius-chip);
            font-size: 12px;
            font-weight: 500;
            background: rgba(47, 107, 255, 0.08);
            color: var(--primary);
            white-space: nowrap;
        }
        .card-tag.tag-cyan {
            background: rgba(56, 189, 248, 0.12);
            color: #0284c7;
        }
        .card-tag.tag-gray {
            background: rgba(100, 116, 139, 0.1);
            color: var(--text-secondary);
        }
        .service-card .card-title {
            font-size: 19px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            transition: color 0.2s ease;
        }
        .service-card:hover .card-title {
            color: var(--primary);
        }
        .service-card .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            flex: 1;
        }
        .service-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
            padding-top: 8px;
            border-top: 1px solid var(--border);
        }
        .service-card .card-meta .date {
            font-family: var(--font-num);
        }
        .service-card .card-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--border);
        }
        /* Load More */
        .load-more-wrap {
            text-align: center;
            padding: 42px 0 0;
        }
        .btn-load-more {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            border-radius: var(--radius-btn);
            background: var(--surface);
            color: var(--primary);
            border: 1px solid var(--primary);
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s ease;
            gap: 8px;
        }
        .btn-load-more:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .btn-load-more .icon {
            font-size: 16px;
            transition: transform 0.3s ease;
        }
        .btn-load-more:hover .icon {
            transform: translateY(2px);
        }
        /* Support Sections */
        .support-section {
            padding: var(--section-gap) 0 0;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.5;
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            max-width: 720px;
            line-height: 1.8;
        }
        /* Scenario Cards */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(47, 107, 255, 0.3);
        }
        .scenario-card .scenario-image {
            width: 100%;
            aspect-ratio: 4/3;
            overflow: hidden;
            background: #eef3fb;
        }
        .scenario-card .scenario-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }
        .scenario-card:hover .scenario-image img {
            transform: scale(1.04);
        }
        .scenario-card .scenario-body {
            padding: 18px 20px 22px;
        }
        .scenario-card .scenario-name {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .scenario-card .scenario-desc {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        /* Glossary */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .glossary-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 24px;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
        }
        .glossary-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(47, 107, 255, 0.25);
        }
        .glossary-item .glossary-term {
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .glossary-item .glossary-def {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        /* Recommended */
        .recommended-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .recommended-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 20px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
        }
        .recommended-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(47, 107, 255, 0.25);
            transform: translateX(3px);
        }
        .recommended-item .rec-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(47, 107, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }
        .recommended-item .rec-content {
            flex: 1;
        }
        .recommended-item .rec-title {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            margin-bottom: 4px;
            line-height: 1.5;
        }
        .recommended-item .rec-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .recommended-item .rec-arrow {
            flex-shrink: 0;
            color: var(--text-secondary);
            font-size: 16px;
            align-self: center;
            transition: all 0.3s ease;
        }
        .recommended-item:hover .rec-arrow {
            color: var(--primary);
            transform: translateX(4px);
        }
        /* CTA Section */
        .cta-section {
            padding: var(--section-gap) 0 0;
        }
        .cta-box {
            background: linear-gradient(135deg, #2F6BFF 0%, #1E4FD6 100%);
            border-radius: 20px;
            padding: 52px 48px;
            display: flex;
            align-items: center;
            gap: 36px;
            flex-wrap: wrap;
            box-shadow: 0 16px 40px rgba(47, 107, 255, 0.28);
        }
        .cta-box .cta-text {
            flex: 1;
            min-width: 260px;
            color: #fff;
        }
        .cta-box .cta-text h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .cta-box .cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.8;
            max-width: 560px;
        }
        .cta-box .cta-form {
            flex: 1;
            min-width: 280px;
            max-width: 440px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .cta-box .cta-input {
            flex: 1;
            min-width: 200px;
            height: 48px;
            padding: 0 18px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            font-size: 15px;
            font-family: var(--font-cn);
            outline: none;
            transition: all 0.3s ease;
        }
        .cta-box .cta-input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }
        .cta-box .cta-input:focus {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.22);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
        }
        .cta-box .btn-cta {
            height: 48px;
            padding: 0 26px;
            border-radius: var(--radius-btn);
            background: #fff;
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.3s ease;
        }
        .cta-box .btn-cta:hover {
            background: rgba(255, 255, 255, 0.9);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            color: var(--primary-dark);
        }
        /* Footer */
        .site-footer {
            margin-top: var(--section-gap);
            background: #1E293B;
            color: #CBD5E1;
            padding: 52px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 14px;
            display: inline-block;
        }
        .footer-brand .logo span {
            color: var(--cyan);
        }
        .footer-brand p {
            font-size: 13.5px;
            color: #94A3B8;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 13.5px;
            color: #94A3B8;
            padding: 6px 0;
            transition: color 0.2s ease;
        }
        .footer-col a:hover {
            color: var(--cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 22px;
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 13px;
            color: #94A3B8;
        }
        .footer-bottom a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-bottom a:hover {
            color: var(--cyan);
        }
        .footer-bottom .sep {
            color: rgba(255, 255, 255, 0.15);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .glossary-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            .header-inner {
                height: 60px;
                gap: 12px;
            }
            .main-nav {
                display: none;
            }
            .nav-divider {
                display: none;
            }
            .phase-chips {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .filter-bar {
                padding: 16px;
                gap: 12px;
            }
            .cta-box {
                padding: 36px 28px;
                flex-direction: column;
                text-align: left;
            }
            .cta-box .cta-text h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .breadcrumb-section {
                padding-top: 20px;
            }
            .category-header h1 {
                font-size: 24px;
            }
            .filter-bar .filter-label {
                width: 100%;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .service-card .card-body {
                padding: 18px 18px 20px;
            }
        }

/* roulang page: category4 */
:root {
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --primary: #2F6BFF;
            --primary-dark: #1E4FD6;
            --cyan: #38BDF8;
            --text: #1E293B;
            --text-secondary: #64748B;
            --border: #DCE6F2;
            --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 32px rgba(37, 99, 235, 0.12);
            --radius-card: 18px;
            --radius-btn: 11px;
            --radius-chip: 999px;
            --section-gap: 72px;
            --card-pad: 28px;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Inter', 'Helvetica Neue', system-ui, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
            border-radius: 12px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        button {
            font-family: var(--font-cn);
            cursor: pointer;
            border: none;
            background: none;
            font-size: 15px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 20px;
        }
        .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo span {
            color: var(--primary);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: flex-end;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .main-nav a {
            font-size: 14.5px;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 6px 4px;
            position: relative;
            white-space: nowrap;
            transition: color 0.2s ease;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-divider {
            width: 1px;
            height: 28px;
            background: var(--border);
            margin: 0 6px;
        }
        .phase-chips {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .phase-chip {
            height: 34px;
            padding: 0 16px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            background: var(--surface);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .phase-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .phase-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(47, 107, 255, 0.28);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--surface);
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 3px;
            transition: all 0.3s ease;
        }
        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            max-height: calc(100vh - 70px);
            overflow-y: auto;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 18px 40px rgba(15, 23, 42, 0.1);
            z-index: 99;
            padding: 20px 28px 32px;
            flex-direction: column;
            gap: 16px;
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer .phase-chips {
            flex-wrap: wrap;
            margin-bottom: 4px;
        }
        .mobile-drawer .main-nav {
            flex-direction: column;
            gap: 6px;
        }
        .mobile-drawer .main-nav a {
            padding: 12px 10px;
            font-size: 16px;
            border-radius: 10px;
        }
        .mobile-drawer .main-nav a.active {
            background: rgba(47, 107, 255, 0.08);
        }
        .mobile-drawer .nav-divider {
            width: 100%;
            height: 1px;
            margin: 8px 0;
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 28px 0 12px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--border);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Category Hero */
        .category-hero {
            padding: 24px 0 40px;
        }
        .category-hero-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: flex-start;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            padding: 36px 40px;
        }
        .category-hero-text {
            flex: 1 1 520px;
            min-width: 0;
        }
        .category-hero-text h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 16px;
            color: var(--text);
            letter-spacing: 0.01em;
        }
        .category-hero-text .intro {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 20px;
            max-width: 780px;
        }
        .category-hero-text .intro strong {
            color: var(--text);
            font-weight: 600;
        }
        .hero-meta-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .hero-meta-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: rgba(47, 107, 255, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            border-radius: var(--radius-chip);
            border: 1px solid rgba(47, 107, 255, 0.18);
        }
        .category-hero-cover {
            flex: 0 1 300px;
            min-width: 220px;
        }
        .category-hero-cover img {
            width: 100%;
            height: auto;
            min-height: 170px;
            object-fit: cover;
            border-radius: 16px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        /* Filter bar */
        .filter-sort-section {
            padding: 8px 0 32px;
        }
        .filter-sort-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 14px 20px;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
        }
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .filter-tag {
            padding: 6px 16px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            background: var(--bg);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all 0.2s ease;
            cursor: pointer;
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-tag.active-tag {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(47, 107, 255, 0.25);
        }
        .sort-control {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .sort-control select {
            font-family: var(--font-cn);
            font-size: 14px;
            color: var(--text);
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 8px 12px;
            outline: none;
            cursor: pointer;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .sort-control select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.12);
        }

        /* News list */
        .news-list-section {
            padding: 0 0 56px;
        }
        .news-list-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
        }
        .news-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(47, 107, 255, 0.25);
        }
        .news-card-cover {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #eef3f9;
        }
        .news-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-card-cover img {
            transform: scale(1.04);
        }
        .news-card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 10px;
        }
        .news-card-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.55;
            color: var(--text);
            transition: color 0.2s;
        }
        .news-card:hover .news-card-title {
            color: var(--primary);
        }
        .news-card-summary {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
            padding-top: 10px;
            border-top: 1px solid var(--border);
        }
        .news-card-date {
            white-space: nowrap;
        }
        .news-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            justify-content: flex-end;
        }
        .news-card-tag {
            padding: 3px 10px;
            font-size: 12px;
            border-radius: var(--radius-chip);
            background: rgba(47, 107, 255, 0.07);
            color: var(--primary);
            white-space: nowrap;
        }

        /* Section headers */
        .section-heading {
            margin-bottom: 28px;
        }
        .section-heading h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .section-heading .sub {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* Topic cards */
        .topic-section {
            padding: 56px 0;
            background: #eef4fb;
            border-radius: 22px;
            margin-bottom: 56px;
        }
        .topic-section .container {
            padding-top: 8px;
            padding-bottom: 8px;
        }
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .topic-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .topic-card-cover {
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #eef3f9;
        }
        .topic-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .topic-card-body {
            padding: 20px 22px 24px;
        }
        .topic-card-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .topic-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* Data summary / glossary */
        .data-summary-section {
            padding: 48px 0 56px;
        }
        .data-summary-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .data-summary-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow);
            transition: all 0.25s ease;
            position: relative;
            overflow: hidden;
        }
        .data-summary-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
            opacity: 0.7;
        }
        .data-summary-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .data-summary-item .label {
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--primary);
            margin-bottom: 8px;
            text-transform: uppercase;
        }
        .data-summary-item .value {
            font-family: var(--font-num);
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .data-summary-item .desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* Recommended reading */
        .recommended-section {
            padding: 48px 0 56px;
        }
        .recommended-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .recommended-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 16px 22px;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
            transition: all 0.25s ease;
        }
        .recommended-item:hover {
            border-color: rgba(47, 107, 255, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateX(3px);
        }
        .recommended-item .rec-title {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            flex: 1;
        }
        .recommended-item .rec-link {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            white-space: nowrap;
        }

        /* FAQ */
        .faq-section {
            padding: 48px 0 56px;
            background: #eef4fb;
            border-radius: 22px;
            margin-bottom: 56px;
        }
        .faq-section .container {
            padding-top: 8px;
            padding-bottom: 8px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 24px;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
            transition: all 0.25s ease;
        }
        .faq-item:hover {
            border-color: rgba(47, 107, 255, 0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            user-select: none;
            transition: background 0.2s;
        }
        .faq-question:hover {
            background: rgba(47, 107, 255, 0.04);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(47, 107, 255, 0.08);
            color: var(--primary);
            font-size: 18px;
            font-weight: 500;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* CTA subscribe */
        .cta-section {
            padding: 48px 0 56px;
        }
        .cta-box {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            padding: 40px 44px;
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            align-items: center;
            justify-content: space-between;
        }
        .cta-text {
            flex: 1 1 400px;
        }
        .cta-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .cta-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .cta-form {
            flex: 1 1 320px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .cta-form input {
            height: 48px;
            padding: 0 18px;
            font-size: 15px;
            font-family: var(--font-cn);
            color: var(--text);
            background: var(--bg);
            border: 1.5px solid var(--border);
            border-radius: var(--radius-btn);
            outline: none;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.12);
        }
        .cta-form .btn-primary {
            height: 48px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
            letter-spacing: 0.02em;
        }
        .cta-form .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 20px rgba(47, 107, 255, 0.28);
            transform: translateY(-2px);
        }
        .cta-form .btn-secondary-link {
            text-align: center;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 4px 0;
        }
        .cta-form .btn-secondary-link a {
            color: var(--primary);
            font-weight: 500;
        }

        /* More button */
        .more-btn-wrap {
            display: flex;
            justify-content: center;
            margin-top: 32px;
        }
        .btn-outline-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--surface);
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
        }
        .btn-outline-primary:hover {
            background: rgba(47, 107, 255, 0.06);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            box-shadow: 0 6px 16px rgba(47, 107, 255, 0.16);
        }

        /* Footer */
        .site-footer {
            background: #eaf1f9;
            border-top: 1px solid var(--border);
            margin-top: 40px;
            padding: 48px 0 32px;
            color: var(--text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
            font-size: 20px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .header-right {
                gap: 14px;
            }
            .main-nav {
                gap: 12px;
            }
            .main-nav a {
                font-size: 13.5px;
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-summary-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                gap: 12px;
            }
            .main-nav {
                gap: 8px;
            }
            .main-nav a {
                font-size: 12.5px;
                padding: 4px 2px;
            }
            .phase-chip {
                padding: 0 10px;
                font-size: 12px;
                height: 30px;
            }
            .nav-divider {
                margin: 0 2px;
            }
            .category-hero-inner {
                padding: 26px 22px;
                flex-direction: column;
            }
            .category-hero-text h1 {
                font-size: 26px;
            }
            .category-hero-cover {
                flex: 1 1 auto;
                min-width: 100%;
            }
            .news-list-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .news-card-body {
                padding: 16px 16px 18px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .data-summary-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-box {
                padding: 28px 24px;
                flex-direction: column;
                align-items: stretch;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                height: 60px;
            }
            .header-right {
                gap: 10px;
            }
            .main-nav {
                display: none;
            }
            .phase-chips {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-drawer {
                top: 60px;
                max-height: calc(100vh - 60px);
            }
            .news-list-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .filter-sort-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .sort-control {
                justify-content: space-between;
            }
            .category-hero-text h1 {
                font-size: 22px;
            }
            .category-hero-inner {
                padding: 20px 16px;
            }
            .cta-box {
                padding: 22px 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .data-summary-item {
                padding: 22px 18px;
            }
            .recommended-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .category-hero-text h1 {
                font-size: 20px;
            }
            .news-card-title {
                font-size: 15px;
            }
            .news-card-summary {
                font-size: 13px;
            }
            .section-heading h2 {
                font-size: 21px;
            }
            .cta-text h2 {
                font-size: 20px;
            }
            .cta-form input,
            .cta-form .btn-primary {
                height: 44px;
                font-size: 14px;
            }
        }

/* roulang page: category5 */
:root {
        --bg: #F5F8FC;
        --surface: #FFFFFF;
        --primary: #2F6BFF;
        --primary-dark: #1E4FD6;
        --cyan: #38BDF8;
        --text: #1E293B;
        --text-secondary: #64748B;
        --border: #DCE6F2;
        --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
        --shadow-hover: 0 12px 32px rgba(37, 99, 235, 0.12);
        --radius-card: 18px;
        --radius-btn: 11px;
        --radius-chip: 999px;
        --section-gap: 84px;
        --card-pad: 28px;
        --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        --font-num: 'Inter', 'Helvetica Neue', system-ui, sans-serif;
    }
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }
    body {
        font-family: var(--font-cn);
        font-size: 16px;
        line-height: 1.85;
        color: var(--text);
        background-color: var(--bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img {
        display: block;
        max-width: 100%;
        height: auto;
        border-radius: 12px;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    a:hover {
        color: var(--primary-dark);
    }
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 3px;
    }
    button {
        font-family: var(--font-cn);
        cursor: pointer;
        border: none;
        background: none;
        font-size: 15px;
    }
    select {
        font-family: var(--font-cn);
        font-size: 14px;
        color: var(--text);
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 10px;
        padding: 0 16px;
        height: 42px;
        cursor: pointer;
        transition: border-color 0.2s ease, box-shadow 0.2s ease;
        min-width: 150px;
    }
    select:hover {
        border-color: var(--primary);
    }
    select:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.08);
        outline: none;
    }
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 28px;
    }
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--border);
        box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 70px;
        gap: 20px;
    }
    .logo {
        font-size: 22px;
        font-weight: 700;
        color: var(--text);
        letter-spacing: 0.02em;
        white-space: nowrap;
    }
    .logo span {
        color: var(--primary);
    }
    .header-right {
        display: flex;
        align-items: center;
        gap: 24px;
        flex: 1;
        justify-content: flex-end;
    }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 18px;
    }
    .main-nav a {
        font-size: 14.5px;
        color: var(--text-secondary);
        font-weight: 500;
        padding: 6px 4px;
        position: relative;
        white-space: nowrap;
        transition: color 0.2s ease;
    }
    .main-nav a:hover {
        color: var(--primary);
    }
    .main-nav a.active {
        color: var(--primary);
        font-weight: 600;
    }
    .main-nav a.active::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 100%;
        height: 2.5px;
        background: var(--primary);
        border-radius: 4px;
    }
    .nav-divider {
        width: 1px;
        height: 28px;
        background: var(--border);
        margin: 0 6px;
    }
    .phase-chips {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .phase-chip {
        height: 34px;
        padding: 0 16px;
        border-radius: var(--radius-chip);
        font-size: 13px;
        font-weight: 500;
        display: inline-flex;
        align-items: center;
        background: var(--surface);
        color: var(--text-secondary);
        border: 1px solid var(--border);
        transition: all 0.25s ease;
        white-space: nowrap;
    }
    .phase-chip:hover {
        border-color: var(--primary);
        color: var(--primary);
        transform: translateY(-1px);
    }
    .phase-chip.active {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
        box-shadow: 0 4px 14px rgba(47, 107, 255, 0.28);
    }
    .hamburger {
        display: none;
        flex-direction: column;
        gap: 5px;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--border);
        border-radius: 10px;
        background: var(--surface);
    }
    .hamburger span {
        display: block;
        width: 20px;
        height: 2px;
        background: var(--text);
        border-radius: 3px;
        transition: all 0.3s ease;
    }
    .mobile-drawer {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        box-shadow: 0 18px 40px rgba(15, 23, 42, 0.1);
        z-index: 99;
        padding: 20px 28px 32px;
        flex-direction: column;
        gap: 16px;
    }
    .mobile-drawer.open {
        display: flex;
    }
    .mobile-drawer .phase-chips {
        flex-wrap: wrap;
        margin-bottom: 4px;
    }
    .mobile-drawer .main-nav {
        flex-direction: column;
        gap: 6px;
    }
    .mobile-drawer .main-nav a {
        padding: 12px 10px;
        font-size: 16px;
        border-radius: 10px;
    }
    .mobile-drawer .main-nav a.active {
        background: rgba(47, 107, 255, 0.08);
    }
    main {
        min-height: 60vh;
    }
    section {
        padding: var(--section-gap) 0;
    }
    .breadcrumb {
        padding: 22px 0 0;
        font-size: 14px;
        color: var(--text-secondary);
    }
    .breadcrumb a {
        color: var(--text-secondary);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    .breadcrumb a:hover {
        color: var(--primary);
    }
    .breadcrumb .sep {
        margin: 0 8px;
        color: var(--border);
    }
    .breadcrumb .current {
        color: var(--primary);
        font-weight: 500;
    }
    .category-header {
        padding: 28px 0 20px;
    }
    .category-header .title-row {
        display: flex;
        flex-wrap: wrap;
        align-items: flex-end;
        gap: 12px 20px;
        margin-bottom: 18px;
    }
    .category-header h1 {
        font-size: 36px;
        line-height: 1.3;
        font-weight: 700;
        color: var(--text);
        letter-spacing: 0.01em;
    }
    .category-header .tag-chip {
        display: inline-flex;
        align-items: center;
        height: 28px;
        padding: 0 14px;
        border-radius: 999px;
        background: rgba(47, 107, 255, 0.08);
        color: var(--primary);
        font-size: 13px;
        font-weight: 500;
        margin-bottom: 6px;
    }
    .category-header .intro {
        font-size: 16px;
        line-height: 1.9;
        color: var(--text-secondary);
        max-width: 860px;
    }
    .category-header .hero-image {
        margin-top: 24px;
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow);
    }
    .category-header .hero-image img {
        width: 100%;
        height: 260px;
        object-fit: cover;
        border-radius: var(--radius-card);
    }
    .filter-bar {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 16px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 18px 20px;
        box-shadow: var(--shadow);
        margin-bottom: 28px;
    }
    .filter-bar .filter-label {
        font-size: 14px;
        color: var(--text-secondary);
        font-weight: 500;
        white-space: nowrap;
    }
    .filter-bar .filter-group {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 10px;
        flex: 1;
    }
    .filter-bar .sort-btns {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
    }
    .filter-bar .sort-btn {
        height: 36px;
        padding: 0 14px;
        border-radius: 10px;
        border: 1px solid var(--border);
        background: var(--surface);
        color: var(--text-secondary);
        font-size: 13px;
        font-weight: 500;
        transition: all 0.25s ease;
        white-space: nowrap;
    }
    .filter-bar .sort-btn:hover {
        border-color: var(--primary);
        color: var(--primary);
    }
    .filter-bar .sort-btn.active {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
        box-shadow: 0 4px 14px rgba(47, 107, 255, 0.28);
    }
    .resource-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .resource-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: transform 0.25s ease, box-shadow 0.25s ease;
        display: flex;
        flex-direction: column;
    }
    .resource-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(47, 107, 255, 0.25);
    }
    .resource-card .card-img {
        position: relative;
        aspect-ratio: 16/9;
        overflow: hidden;
        background: #E8EEF7;
        border-radius: 0;
    }
    .resource-card .card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: 0;
        transition: transform 0.4s ease;
    }
    .resource-card:hover .card-img img {
        transform: scale(1.04);
    }
    .resource-card .card-img .badge {
        position: absolute;
        top: 12px;
        left: 12px;
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
        padding: 4px 12px;
        border-radius: 999px;
        font-size: 12px;
        font-weight: 500;
        color: var(--primary);
        border: 1px solid rgba(47, 107, 255, 0.18);
    }
    .resource-card .card-body {
        padding: 22px 22px 24px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .resource-card .card-title {
        font-size: 18px;
        font-weight: 700;
        line-height: 1.5;
        color: var(--text);
        margin-bottom: 10px;
        transition: color 0.2s ease;
    }
    .resource-card:hover .card-title {
        color: var(--primary);
    }
    .resource-card .card-desc {
        font-size: 14.5px;
        line-height: 1.8;
        color: var(--text-secondary);
        margin-bottom: 16px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        flex: 1;
    }
    .resource-card .card-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
        font-size: 13px;
        color: var(--text-secondary);
        border-top: 1px solid var(--border);
        padding-top: 14px;
    }
    .resource-card .card-meta .date {
        color: var(--text-secondary);
        white-space: nowrap;
    }
    .resource-card .card-meta .tag {
        background: rgba(56, 189, 248, 0.12);
        color: #0284C7;
        padding: 2px 10px;
        border-radius: 999px;
        font-weight: 500;
        white-space: nowrap;
    }
    .special-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 22px;
    }
    .special-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 24px;
        box-shadow: var(--shadow);
        transition: transform 0.25s ease, box-shadow 0.25s ease;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .special-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-hover);
    }
    .special-card .special-icon {
        width: 48px;
        height: 48px;
        border-radius: 14px;
        background: rgba(47, 107, 255, 0.1);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        font-weight: 700;
    }
    .special-card h3 {
        font-size: 18px;
        font-weight: 700;
        color: var(--text);
        line-height: 1.5;
    }
    .special-card p {
        font-size: 14.5px;
        color: var(--text-secondary);
        line-height: 1.8;
    }
    .glossary-list {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
    }
    .glossary-item {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 22px 24px;
        box-shadow: var(--shadow);
        transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .glossary-item:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-hover);
    }
    .glossary-item .term {
        font-size: 16px;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 8px;
    }
    .glossary-item .definition {
        font-size: 14.5px;
        color: var(--text-secondary);
        line-height: 1.8;
    }
    .related-reading {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    .related-link {
        display: flex;
        align-items: center;
        gap: 12px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 14px;
        padding: 16px 18px;
        box-shadow: var(--shadow);
        transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        text-decoration: none;
        color: var(--text);
    }
    .related-link:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(47, 107, 255, 0.25);
        color: var(--primary);
    }
    .related-link .arrow {
        color: var(--primary);
        font-weight: 700;
        flex-shrink: 0;
    }
    .related-link .related-text {
        font-size: 14.5px;
        font-weight: 500;
        line-height: 1.6;
    }
    .cta-section {
        background: linear-gradient(135deg, #F0F5FF 0%, #FAFCFF 100%);
        border-radius: var(--radius-card);
        border: 1px solid var(--border);
        padding: 52px 40px;
        text-align: center;
        box-shadow: var(--shadow);
    }
    .cta-section h2 {
        font-size: 26px;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 14px;
    }
    .cta-section p {
        font-size: 15.5px;
        color: var(--text-secondary);
        max-width: 640px;
        margin: 0 auto 26px;
        line-height: 1.9;
    }
    .cta-section .cta-form {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        max-width: 520px;
        margin: 0 auto;
        justify-content: center;
    }
    .cta-section .cta-form input {
        flex: 1 1 260px;
        height: 48px;
        border: 1px solid var(--border);
        border-radius: var(--radius-btn);
        padding: 0 18px;
        font-size: 15px;
        font-family: var(--font-cn);
        color: var(--text);
        background: var(--surface);
        transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }
    .cta-section .cta-form input::placeholder {
        color: #94A3B8;
    }
    .cta-section .cta-form input:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.08);
        outline: none;
    }
    .cta-section .cta-btn {
        height: 48px;
        padding: 0 28px;
        border-radius: var(--radius-btn);
        background: var(--primary);
        color: #fff;
        font-size: 15px;
        font-weight: 600;
        border: none;
        cursor: pointer;
        transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
        white-space: nowrap;
    }
    .cta-section .cta-btn:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(47, 107, 255, 0.28);
    }
    .section-title {
        font-size: 26px;
        font-weight: 700;
        color: var(--text);
        line-height: 1.4;
        margin-bottom: 10px;
    }
    .section-sub {
        font-size: 15.5px;
        color: var(--text-secondary);
        margin-bottom: 32px;
        line-height: 1.8;
    }
    .site-footer {
        background: #FFFFFF;
        border-top: 1px solid var(--border);
        margin-top: 60px;
        padding: 48px 0 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 32px;
        padding-bottom: 36px;
    }
    .footer-brand .logo {
        font-size: 22px;
        margin-bottom: 14px;
    }
    .footer-brand p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.8;
        max-width: 340px;
    }
    .footer-col h4 {
        font-size: 15px;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 14px;
    }
    .footer-col a {
        display: block;
        font-size: 14px;
        color: var(--text-secondary);
        margin-bottom: 10px;
        text-decoration: none;
        transition: color 0.2s ease;
    }
    .footer-col a:hover {
        color: var(--primary);
    }
    .footer-bottom {
        border-top: 1px solid var(--border);
        padding: 20px 0 28px;
        display: flex;
        flex-wrap: wrap;
        gap: 12px 20px;
        font-size: 13px;
        color: var(--text-secondary);
    }
    .footer-bottom a {
        color: var(--text-secondary);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    .footer-bottom a:hover {
        color: var(--primary);
    }
    @media (max-width: 1024px) {
        .resource-grid,
        .special-grid,
        .glossary-list,
        .related-reading {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .category-header h1 {
            font-size: 32px;
        }
        .section-title {
            font-size: 24px;
        }
    }
    @media (max-width: 768px) {
        :root {
            --section-gap: 64px;
            --card-pad: 22px;
        }
        .header-inner {
            height: 64px;
        }
        .header-right .main-nav,
        .header-right .nav-divider,
        .header-right .phase-chips {
            display: none;
        }
        .hamburger {
            display: flex;
        }
        .category-header h1 {
            font-size: 27px;
        }
        .cta-section {
            padding: 40px 24px;
        }
        .cta-section h2 {
            font-size: 22px;
        }
        .resource-grid,
        .special-grid,
        .glossary-list,
        .related-reading {
            grid-template-columns: 1fr;
        }
        .filter-bar {
            flex-direction: column;
            align-items: stretch;
        }
        .filter-bar .filter-group {
            flex-direction: column;
            align-items: stretch;
        }
        .filter-bar .sort-btns {
            justify-content: flex-start;
        }
    }
    @media (max-width: 520px) {
        .container {
            padding: 0 18px;
        }
        .category-header .hero-image img {
            height: 180px;
        }
        .cta-section .cta-form {
            flex-direction: column;
        }
        .cta-section .cta-form input {
            flex: none;
            width: 100%;
        }
        .footer-grid {
            grid-template-columns: 1fr;
        }
        .footer-bottom {
            flex-direction: column;
            gap: 8px;
        }
    }

/* roulang page: category6 */
:root {
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --primary: #2F6BFF;
            --primary-dark: #1E4FD6;
            --cyan: #38BDF8;
            --text: #1E293B;
            --text-secondary: #64748B;
            --border: #DCE6F2;
            --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 32px rgba(37, 99, 235, 0.12);
            --radius-card: 18px;
            --radius-btn: 11px;
            --radius-chip: 999px;
            --section-gap: 72px;
            --card-pad: 28px;
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Inter', 'Helvetica Neue', system-ui, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        main {
            flex: 1;
        }

        img {
            display: block;
            max-width: 100%;
            height: auto;
            border-radius: 12px;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        button {
            font-family: var(--font-cn);
            cursor: pointer;
            border: none;
            background: none;
            font-size: 15px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 20px;
        }

        .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo span {
            color: var(--primary);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 20px;
            flex: 1;
            justify-content: flex-end;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .main-nav a {
            font-size: 14.5px;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 6px 4px;
            position: relative;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

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

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav-divider {
            width: 1px;
            height: 28px;
            background: var(--border);
            margin: 0 4px;
        }

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

        .phase-chip {
            height: 34px;
            padding: 0 16px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            background: var(--surface);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .phase-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }

        .phase-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(47, 107, 255, 0.28);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--surface);
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 3px;
            transition: all 0.3s ease;
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            max-height: calc(100vh - 70px);
            overflow-y: auto;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 18px 40px rgba(15, 23, 42, 0.1);
            z-index: 99;
            padding: 20px 28px 32px;
            flex-direction: column;
            gap: 16px;
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer .phase-chips {
            flex-wrap: wrap;
            margin-bottom: 4px;
        }

        .mobile-drawer .main-nav {
            flex-direction: column;
            gap: 6px;
        }

        .mobile-drawer .main-nav a {
            padding: 12px 10px;
            font-size: 16px;
            border-radius: 10px;
        }

        .mobile-drawer .main-nav a.active {
            background: rgba(47, 107, 255, 0.08);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 18px 0;
        }

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

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

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

        .breadcrumb .sep {
            color: var(--border);
            font-size: 12px;
        }

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

        /* Page header */
        .page-header-section {
            background: var(--surface);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border);
        }

        .page-header-section h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 16px;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }

        .page-header-section .page-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 860px;
            margin: 0;
            line-height: 1.85;
        }

        /* Filter bar */
        .filter-section {
            background: var(--surface);
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
        }

        .filter-bar {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .filter-bar label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .filter-bar .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-btn {
            height: 38px;
            padding: 0 18px;
            border-radius: var(--radius-chip);
            font-size: 13.5px;
            font-weight: 500;
            background: var(--surface);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all 0.22s ease;
            white-space: nowrap;
        }

        .filter-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(47, 107, 255, 0.22);
        }

        .filter-btn.sort-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .filter-btn.sort-btn .arrow {
            font-size: 11px;
            opacity: 0.75;
        }

        /* Resource list section */
        .resource-list-section {
            padding: var(--section-gap) 0;
            background: var(--bg);
        }

        .resource-list-section .section-head {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            margin-bottom: 28px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .resource-list-section .section-head h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin: 0;
        }

        .resource-list-section .section-head .result-count {
            font-size: 14px;
            color: var(--text-secondary);
        }

        .resource-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .resource-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(47, 107, 255, 0.25);
        }

        .resource-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: 0;
        }

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

        .resource-card .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 10px;
            line-height: 1.45;
            transition: color 0.2s;
        }

        .resource-card:hover .card-title {
            color: var(--primary);
        }

        .resource-card .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0 0 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .resource-card .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-secondary);
        }

        .resource-card .card-meta .date {
            font-family: var(--font-num);
        }

        .resource-card .card-meta .tag {
            background: rgba(47, 107, 255, 0.08);
            color: var(--primary);
            padding: 3px 12px;
            border-radius: var(--radius-chip);
            font-size: 12px;
            font-weight: 500;
            white-space: nowrap;
        }

        /* Scenario section */
        .scenario-section {
            padding: var(--section-gap) 0;
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .scenario-section .section-head {
            margin-bottom: 28px;
        }

        .scenario-section .section-head h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
        }

        .scenario-section .section-head p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: var(--bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(47, 107, 255, 0.2);
        }

        .scenario-card img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: 0;
        }

        .scenario-card .scenario-body {
            padding: 20px 24px 24px;
        }

        .scenario-card .scenario-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
        }

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

        /* Data summary section */
        .data-summary-section {
            padding: var(--section-gap) 0;
            background: var(--bg);
        }

        .data-summary-section .section-head h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
        }

        .data-summary-section .section-head p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 28px;
        }

        .data-summary-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .data-summary-item {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            padding: 24px 26px;
            box-shadow: var(--shadow);
            border-left: 4px solid var(--primary);
            transition: all 0.25s ease;
        }

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

        .data-summary-item .item-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.03em;
            margin-bottom: 6px;
        }

        .data-summary-item .item-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-num);
            line-height: 1.3;
            margin-bottom: 8px;
        }

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

        /* Recommended reading */
        .recommended-section {
            padding: var(--section-gap) 0;
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .recommended-section .section-head h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
        }

        .recommended-section .section-head p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 24px;
        }

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

        .recommended-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 16px 20px;
            transition: all 0.25s ease;
        }

        .recommended-item:hover {
            box-shadow: var(--shadow);
            border-color: rgba(47, 107, 255, 0.2);
            transform: translateY(-1px);
        }

        .recommended-item .rec-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(47, 107, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .recommended-item .rec-text {
            font-size: 15px;
            color: var(--text);
            font-weight: 500;
            line-height: 1.5;
        }

        .recommended-item .rec-text a {
            color: var(--text);
            transition: color 0.2s;
        }

        .recommended-item .rec-text a:hover {
            color: var(--primary);
        }

        /* CTA section */
        .cta-section {
            padding: 56px 0;
            background: linear-gradient(135deg, rgba(47, 107, 255, 0.04) 0%, rgba(56, 189, 248, 0.06) 100%);
        }

        .cta-box {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 40px 44px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-box .cta-text h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
        }

        .cta-box .cta-text p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            max-width: 560px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(47, 107, 255, 0.28);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
            transform: translateY(-2px);
            color: #fff;
        }

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

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(47, 107, 255, 0.04);
            transform: translateY(-2px);
        }

        .btn-sm {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
        }

        /* Pagination */
        .pagination-section {
            padding: 32px 0 56px;
            background: var(--bg);
        }

        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .page-btn {
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            background: var(--surface);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.22s ease;
        }

        .page-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .page-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(47, 107, 255, 0.22);
        }

        .page-btn.disabled {
            opacity: 0.5;
            cursor: not-allowed;
            pointer-events: none;
        }

        /* Footer */
        .site-footer {
            background: #1E293B;
            color: rgba(255, 255, 255, 0.78);
            padding: 52px 0 24px;
            margin-top: auto;
        }

        .site-footer .container {
            max-width: 1200px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 12px;
            display: block;
        }

        .footer-brand .logo span {
            color: var(--cyan);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.65);
            margin: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            padding: 4px 0;
            transition: color 0.2s;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .resource-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .data-summary-list {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .mobile-drawer {
                top: 64px;
                max-height: calc(100vh - 64px);
            }
            .main-nav {
                display: none;
            }
            .phase-chips {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .page-header-section {
                padding: 36px 0 28px;
            }
            .page-header-section h1 {
                font-size: 28px;
            }
            .resource-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-summary-list {
                grid-template-columns: 1fr;
            }
            .recommended-list {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 28px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .page-header-section h1 {
                font-size: 24px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .resource-card .card-body {
                padding: 18px 18px 20px;
            }
            .cta-box {
                padding: 22px 18px;
            }
            .pagination-section {
                padding: 20px 0 32px;
            }
            .page-btn {
                min-width: 36px;
                height: 36px;
                font-size: 13px;
                padding: 0 10px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .breadcrumb {
                font-size: 13px;
            }
        }