/* roulang page: index */
:root {
            --color-primary: #1B5E9E;
            --color-primary-hover: #164A7D;
            --color-primary-active: #0F3C5F;
            --color-accent: #00B884;
            --color-accent-hover: #00A374;
            --color-highlight: #F5A623;
            --color-bg: #F4F7FA;
            --color-bg-light: #EAF2FB;
            --color-card-bg: #FFFFFF;
            --color-text-primary: #1A2B3C;
            --color-text-secondary: #5B6B7C;
            --color-text-weak: #8A9AAB;
            --color-border: #E3EAF3;
            --color-footer-bg: #142633;
            --color-footer-text: #D8E1EC;
            --color-error: #D64545;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-overlay: 16px;
            --shadow-card: 0 8px 20px rgba(31, 58, 92, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(31, 58, 92, 0.12);
            --shadow-nav: 0 2px 8px rgba(31, 58, 92, 0.04);
            --space-desktop-section: 80px;
            --space-mobile-section: 48px;
            --container-max: 1200px;
            --container-padding-desktop: 24px;
            --container-padding-mobile: 16px;
            --font-family-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-family-num: 'DIN Alternate', 'Oxanium', 'SF Mono', 'Segoe UI', monospace;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-family-cn);
            background-color: var(--color-bg);
            color: var(--color-text-primary);
            line-height: 1.85;
            font-size: 15px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-padding-desktop);
            padding-right: var(--container-padding-desktop);
        }

        .section {
            padding-top: var(--space-desktop-section);
            padding-bottom: var(--space-desktop-section);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            line-height: 1.4;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 32px;
        }

        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-bg-light);
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            border: 1px solid rgba(27, 94, 158, 0.15);
        }

        /* ============ TOP INFO BAR ============ */
        .top-info-bar {
            background: #EEF4FA;
            height: 36px;
            font-size: 12px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            position: relative;
            z-index: 1001;
        }

        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .top-info-bar .domain-text {
            letter-spacing: 0.3px;
            user-select: text;
        }

        .top-info-bar .top-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .top-info-bar .top-actions a {
            color: var(--color-text-secondary);
            font-size: 12px;
            transition: var(--transition-base);
            position: relative;
        }

        .top-info-bar .top-actions a:hover {
            color: var(--color-primary);
        }

        .top-info-bar .top-actions a+a::before {
            content: '';
            display: inline-block;
            width: 1px;
            height: 12px;
            background: #C9D8E8;
            margin-right: 16px;
            vertical-align: -1px;
        }

        /* ============ HEADER / NAV ============ */
        .main-header {
            background: var(--color-card-bg);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-nav);
            height: 76px;
            display: flex;
            align-items: center;
        }

        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
            font-family: var(--font-family-num);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-primary);
            padding: 8px 14px;
            border-radius: 6px;
            position: relative;
            transition: var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
            transition: var(--transition-smooth);
        }

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

        .main-nav a:hover::after {
            width: 60%;
        }

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

        .main-nav a.active::after {
            width: 70%;
        }

        .nav-cta {
            background: var(--color-accent);
            color: #fff !important;
            padding: 8px 18px !important;
            border-radius: var(--radius-btn);
            font-weight: 600 !important;
            font-size: 13px;
            margin-left: 6px;
        }

        .nav-cta::after {
            display: none !important;
        }

        .nav-cta:hover {
            background: var(--color-accent-hover) !important;
            color: #fff !important;
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            border-radius: 8px;
            transition: var(--transition-base);
            cursor: pointer;
            border: 1px solid var(--color-border);
            background: #fff;
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-text-primary);
            border-radius: 2px;
            transition: var(--transition-smooth);
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        /* Mobile Drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 36px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(20, 38, 51, 0.5);
            z-index: 999;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .mobile-drawer.open {
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-drawer .drawer-content {
            background: #fff;
            padding: 24px 16px 40px;
            box-shadow: 0 20px 40px rgba(31, 58, 92, 0.15);
            border-radius: 0 0 16px 16px;
            max-height: calc(100vh - 100px);
            overflow-y: auto;
        }

        .mobile-drawer .drawer-content a {
            display: block;
            padding: 14px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-primary);
            border-radius: 8px;
            transition: var(--transition-base);
        }

        .mobile-drawer .drawer-content a:hover {
            background: var(--color-bg-light);
            color: var(--color-primary);
        }

        .mobile-drawer .drawer-content a.active {
            background: var(--color-bg-light);
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ============ HERO ============ */
        .hero {
            background: linear-gradient(135deg, rgba(27, 94, 158, 0.92) 0%, rgba(20, 38, 51, 0.88) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-highlight));
        }

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

        .hero-content {
            max-width: 680px;
        }

        .hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.3;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.9;
            margin-bottom: 30px;
            max-width: 560px;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition-base);
            white-space: nowrap;
            line-height: 1;
            cursor: pointer;
            text-align: center;
        }

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

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border: 2px solid var(--color-primary);
        }

        .btn-primary:hover {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(27, 94, 158, 0.3);
        }

        .btn-primary:active {
            background: var(--color-primary-active);
            border-color: var(--color-primary-active);
            transform: translateY(0);
        }

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

        .btn-secondary:hover {
            background: var(--color-bg-light);
            transform: translateY(-1px);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            border: 2px solid var(--color-accent);
        }

        .btn-accent:hover {
            background: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(0, 184, 132, 0.35);
        }

        .btn-white-outline {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(4px);
        }

        .btn-white-outline:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-1px);
        }

        .hero-trust-bar {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
        }

        .hero-trust-bar span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust-bar .trust-icon {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
        }

        .hero-stats {
            position: absolute;
            right: 24px;
            bottom: 60px;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            z-index: 2;
        }

        .hero-stat-card {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 12px;
            padding: 16px 20px;
            min-width: 120px;
            text-align: center;
        }

        .hero-stat-card .stat-number {
            font-size: 28px;
            font-weight: 700;
            font-family: var(--font-family-num);
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat-card .stat-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ============ METRICS DASHBOARD ============ */
        .metrics-section {
            background: var(--color-card-bg);
            position: relative;
            z-index: 3;
            margin-top: -50px;
            padding: 0 0 40px;
        }

        .metrics-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            position: relative;
            z-index: 5;
        }

        .metric-card {
            background: linear-gradient(135deg, #F4F8FC 0%, #EAF2FB 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: var(--transition-smooth);
            cursor: default;
        }

        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(27, 94, 158, 0.3);
            transform: translateY(-2px);
        }

        .metric-card .metric-value {
            font-size: 32px;
            font-weight: 700;
            font-family: var(--font-family-num);
            color: var(--color-text-primary);
            line-height: 1.1;
            letter-spacing: -1px;
        }

        .metric-card .metric-value .unit {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            margin-left: 4px;
            font-family: var(--font-family-cn);
            letter-spacing: 0;
        }

        .metric-card .metric-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-top: 6px;
        }

        .metric-card .metric-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 8px;
            line-height: 1.7;
        }

        /* ============ SERVICES MATRIX ============ */
        .services-section {
            background: var(--color-bg);
        }

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

        .service-card {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

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

        .service-card .service-image {
            width: 100%;
            aspect-ratio: 16/9;
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 16px;
            background: var(--color-bg-light);
        }

        .service-card .service-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

        .service-card:hover .service-image img {
            transform: scale(1.03);
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .service-card .service-summary {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
            flex-grow: 1;
        }

        .service-card .service-list {
            font-size: 13px;
            color: var(--color-text-secondary);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .service-card .service-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.6;
        }

        .service-card .service-list li::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
            margin-top: 7px;
            flex-shrink: 0;
        }

        .brand-intro {
            margin-top: 36px;
            padding: 28px 32px;
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border-left: 4px solid var(--color-primary);
            box-shadow: var(--shadow-card);
        }

        .brand-intro h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--color-text-primary);
        }

        .brand-intro p {
            font-size: 14.5px;
            color: var(--color-text-secondary);
            line-height: 2;
        }

        /* ============ COMPARISON ============ */
        .comparison-section {
            background: var(--color-card-bg);
        }

        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 36px;
        }

        .comparison-card {
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--color-border);
        }

        .comparison-card.traditional {
            background: #FAFBFC;
            border-color: #E0E6ED;
        }

        .comparison-card.mk-sport {
            background: var(--color-bg-light);
            border: 2px solid var(--color-primary);
            box-shadow: 0 8px 24px rgba(27, 94, 158, 0.1);
        }

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

        .comparison-card .comparison-tag {
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 12px;
            background: #EDF1F5;
            color: var(--color-text-secondary);
        }

        .comparison-card.mk-sport .comparison-tag {
            background: var(--color-primary);
            color: #fff;
        }

        .comparison-card ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .comparison-card ul li {
            font-size: 14px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.7;
            padding-bottom: 8px;
            border-bottom: 1px solid #EDF1F5;
        }

        .comparison-card ul li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .cmp-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            margin-top: 4px;
            font-weight: 700;
        }

        .cmp-icon.minus {
            background: #FEE8E8;
            color: #C0392B;
        }

        .cmp-icon.plus {
            background: #E6F9F2;
            color: var(--color-accent);
        }

        .comparison-conclusion {
            font-size: 15px;
            color: var(--color-text-primary);
            line-height: 1.9;
            padding: 20px 24px;
            background: #F9FBFD;
            border-radius: 10px;
            border: 1px dashed var(--color-primary);
            margin-bottom: 0;
        }

        /* ============ NEWS IN COMPARISON ============ */
        .news-inline {
            margin-top: 36px;
        }

        .news-inline h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text-primary);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
            transition: var(--transition-base);
        }

        .news-item:hover {
            padding-left: 6px;
        }

        .news-date {
            font-size: 12px;
            color: var(--color-text-weak);
            font-family: var(--font-family-num);
            white-space: nowrap;
            min-width: 72px;
            padding-top: 4px;
        }

        .news-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .news-body p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 6px;
        }

        .news-body .read-more {
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary);
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-body .read-more:hover {
            color: var(--color-accent);
        }

        .news-body .read-more::after {
            content: '→';
            transition: var(--transition-base);
        }

        .news-body .read-more:hover::after {
            transform: translateX(4px);
        }

        /* ============ TIMELINE ============ */
        .timeline-section {
            background: var(--color-bg);
        }

        .timeline {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 6px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
        }

        .timeline-item {
            display: flex;
            gap: 20px;
            padding-left: 24px;
            position: relative;
            padding-bottom: 28px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 3px solid #D6E8F5;
        }

        .timeline-item .timeline-time {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-primary);
            font-family: var(--font-family-num);
            min-width: 52px;
            white-space: nowrap;
            padding-top: 2px;
        }

        .timeline-item .timeline-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 4px;
        }

        .timeline-item .timeline-content p {
            font-size: 13.5px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ============ GETTING STARTED ============ */
        .getting-started-section {
            background: var(--color-card-bg);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .step-card {
            background: var(--color-bg);
            border-radius: var(--radius-card);
            padding: 24px;
            text-align: center;
            border: 1px solid var(--color-border);
            transition: var(--transition-smooth);
        }

        .step-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-3px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            font-family: var(--font-family-num);
            margin-bottom: 14px;
        }

        .step-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ============ PRICING / PACKAGE COMPARISON ============ */
        .pricing-section {
            background: var(--color-bg);
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 20px;
            align-items: stretch;
        }

        .pricing-card {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            transition: var(--transition-smooth);
        }

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

        .pricing-card.featured {
            border: 2px solid var(--color-accent);
            position: relative;
            box-shadow: 0 12px 28px rgba(0, 184, 132, 0.15);
        }

        .pricing-card.featured::before {
            content: '推荐方案';
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: var(--color-accent);
            padding: 3px 14px;
            border-radius: 12px;
            letter-spacing: 0.5px;
        }

        .pricing-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 6px;
        }

        .pricing-card .pricing-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .pricing-card ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .pricing-card ul li {
            font-size: 13px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.6;
        }

        .pricing-card ul li::before {
            content: '✓';
            color: var(--color-accent);
            font-weight: 700;
            flex-shrink: 0;
        }

        .pricing-card .btn {
            width: 100%;
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--color-card-bg);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            overflow: hidden;
            transition: var(--transition-base);
            background: #fff;
        }

        .faq-item.active {
            border-color: var(--color-primary);
            background: #F4F8FC;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            user-select: none;
            gap: 16px;
            transition: var(--transition-base);
            width: 100%;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            background: transparent;
            border: none;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            transition: var(--transition-smooth);
        }

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

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

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 16px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* ============ CONVERSION FORM ============ */
        .conversion-section {
            background: linear-gradient(135deg, #EAF2FB 0%, #F5F7FB 100%);
        }

        .conversion-wrapper {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: start;
        }

        .conversion-info h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .conversion-info p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 20px;
        }

        .conversion-benefits {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .conversion-benefits li {
            font-size: 14px;
            color: var(--color-text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1.6;
        }

        .conversion-benefits li::before {
            content: '●';
            color: var(--color-accent);
            font-size: 10px;
        }

        .conversion-form-area {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            height: 44px;
            padding: 0 12px;
            border: 1px solid #D6E2EF;
            border-radius: var(--radius-input);
            font-size: 14px;
            color: var(--color-text-primary);
            background: #fff;
            transition: var(--transition-base);
        }

        .form-group textarea {
            height: auto;
            min-height: 90px;
            padding: 12px;
            resize: vertical;
            line-height: 1.6;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(27, 94, 158, 0.15);
        }

        .form-group input.error,
        .form-group textarea.error {
            border-color: var(--color-error);
        }

        .form-error-msg {
            font-size: 12px;
            color: var(--color-error);
            margin-top: 4px;
            display: none;
        }

        .form-error-msg.show {
            display: block;
        }

        .form-submit-btn {
            width: 100%;
            height: 48px;
            background: var(--color-accent);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: var(--transition-base);
            letter-spacing: 0.5px;
        }

        .form-submit-btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(0, 184, 132, 0.35);
        }

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

        .form-note {
            font-size: 12px;
            color: var(--color-text-weak);
            margin-top: 10px;
            text-align: center;
            line-height: 1.5;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 32px;
            padding-bottom: 36px;
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 18px;
            margin-bottom: 12px;
            display: inline-block;
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(216, 225, 236, 0.7);
            line-height: 1.8;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

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

        .footer-col ul a {
            font-size: 13px;
            color: rgba(216, 225, 236, 0.75);
            transition: var(--transition-base);
        }

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

        .footer-contact p {
            font-size: 13px;
            color: rgba(216, 225, 236, 0.75);
            line-height: 1.8;
            margin-bottom: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 18px 0 22px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 12px;
            color: rgba(216, 225, 236, 0.55);
        }

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

        .footer-bottom .legal-links a {
            color: rgba(216, 225, 236, 0.55);
            transition: var(--transition-base);
        }

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

        .footer-bottom .legal-links span {
            color: rgba(216, 225, 236, 0.3);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .metrics-container {
                grid-template-columns: repeat(4, 1fr);
                gap: 12px;
            }
            .services-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .comparison-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 14px;
            }
            .pricing-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 14px;
            }
            .conversion-wrapper {
                grid-template-columns: 1fr 1.2fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
                gap: 24px;
            }
            .hero-stats {
                position: static;
                margin-top: 20px;
                justify-content: flex-start;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-drawer {
                display: block;
            }
            .main-header {
                height: 64px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
            .logo-text {
                font-size: 17px;
            }
            .hero {
                min-height: auto;
                padding: 48px 0 60px;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero p {
                font-size: 15px;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-cta-group .btn {
                width: 100%;
                justify-content: center;
            }
            .section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .section-title {
                font-size: 22px;
            }
            .metrics-container {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                margin-top: -40px;
            }
            .metric-card {
                padding: 16px;
            }
            .metric-card .metric-value {
                font-size: 24px;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .comparison-card {
                padding: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .conversion-wrapper {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .conversion-form-area {
                padding: 20px;
            }
            .news-item {
                flex-direction: column;
                gap: 8px;
            }
            .news-date {
                padding-top: 0;
            }
            .timeline-item {
                padding-left: 18px;
                gap: 12px;
            }
            .timeline-item .timeline-time {
                font-size: 12px;
                min-width: 42px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom .legal-links {
                justify-content: center;
            }
            .top-info-bar .top-actions {
                display: none;
            }
            .top-info-bar .domain-text {
                text-align: center;
                width: 100%;
            }
            .brand-intro {
                padding: 20px;
            }
        }

        @media (max-width: 640px) {
            .section-title {
                font-size: 20px;
            }
            .metric-card .metric-value {
                font-size: 22px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .hero h1 {
                font-size: 23px;
            }
            .comparison-card ul li {
                font-size: 13px;
            }
        }

        @media (min-width: 769px) and (max-width: 1024px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

        @media (min-width: 641px) and (max-width: 768px) {
            .metrics-container {
                grid-template-columns: 1fr 1fr;
            }
            .services-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Accessibility */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1B5E9E;
            --color-primary-hover: #164A7D;
            --color-primary-active: #0F3C5F;
            --color-accent: #00B884;
            --color-accent-hover: #00A374;
            --color-highlight: #F5A623;
            --color-bg: #F4F7FA;
            --color-bg-light: #EAF2FB;
            --color-card-bg: #FFFFFF;
            --color-text-primary: #1A2B3C;
            --color-text-secondary: #5B6B7C;
            --color-text-weak: #8A9AAB;
            --color-border: #E3EAF3;
            --color-footer-bg: #142633;
            --color-footer-text: #D8E1EC;
            --color-error: #D64545;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-overlay: 16px;
            --shadow-card: 0 8px 20px rgba(31, 58, 92, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(31, 58, 92, 0.12);
            --shadow-nav: 0 2px 8px rgba(31, 58, 92, 0.04);
            --space-desktop-section: 80px;
            --space-mobile-section: 48px;
            --container-max: 1200px;
            --container-padding-desktop: 24px;
            --container-padding-mobile: 16px;
            --font-family-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-family-num: 'DIN Alternate', 'Oxanium', 'SF Mono', 'Segoe UI', monospace;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-family-cn);
            background-color: var(--color-bg);
            color: var(--color-text-primary);
            line-height: 1.85;
            font-size: 15px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button {
            cursor: pointer;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-padding-desktop);
            padding-right: var(--container-padding-desktop);
        }

        .section {
            padding-top: var(--space-desktop-section);
            padding-bottom: var(--space-desktop-section);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            line-height: 1.4;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 32px;
        }

        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-bg-light);
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            border: 1px solid rgba(27, 94, 158, 0.15);
        }

        /* ============ 顶部信息条 ============ */
        .top-info-bar {
            background: #EEF4FA;
            min-height: 36px;
            display: flex;
            align-items: center;
            font-size: 12px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid var(--color-border);
        }

        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .top-info-bar .domain-text {
            letter-spacing: 0.3px;
            user-select: text;
            color: var(--color-text-secondary);
        }

        .top-info-bar .top-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .top-info-bar .top-actions a {
            color: var(--color-text-secondary);
            font-size: 12px;
            transition: var(--transition-base);
            position: relative;
        }

        .top-info-bar .top-actions a:hover {
            color: var(--color-primary);
        }

        .top-info-bar .top-actions a+a::before {
            content: '';
            display: inline-block;
            width: 1px;
            height: 12px;
            background: #C9D8E8;
            margin-right: 16px;
            vertical-align: -1px;
        }

        /* ============ HEADER / NAV ============ */
        .main-header {
            background: var(--color-card-bg);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-nav);
            height: 76px;
            display: flex;
            align-items: center;
        }

        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
            position: relative;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            z-index: 1002;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            font-family: var(--font-family-num);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            height: 100%;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            height: 100%;
            display: flex;
            align-items: center;
            position: relative;
            transition: var(--transition-base);
            white-space: nowrap;
            border-bottom: 3px solid transparent;
        }

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

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

        .main-nav a.nav-cta {
            background: var(--color-accent);
            color: #fff;
            padding: 0 18px;
            height: 40px;
            border-radius: var(--radius-btn);
            border-bottom: none;
            font-weight: 600;
            align-self: center;
            transition: var(--transition-base);
        }

        .main-nav a.nav-cta:hover {
            background: var(--color-accent-hover);
            border-bottom: none;
        }

        .main-nav a.nav-cta.active {
            border-bottom: none;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            z-index: 1002;
            background: transparent;
            border: 1px solid var(--color-border);
            transition: var(--transition-base);
        }

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

        .nav-toggle:hover {
            background: var(--color-bg-light);
        }

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

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

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

        /* ============ 页头 ============ */
        .page-header {
            background-image: linear-gradient(135deg, rgba(26, 43, 60, 0.78) 0%, rgba(27, 94, 158, 0.7) 100%), url('/assets/images/coverpic/cover-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 260px;
            max-height: 320px;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--color-border);
        }

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

        .page-header .header-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(4px);
        }

        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        .page-header .header-sub {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            line-height: 1.8;
        }

        /* ============ 新闻列表 ============ */
        .news-list-section {
            padding-top: 60px;
            padding-bottom: 60px;
        }

        .news-list-wrapper {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
        }

        .news-list-item {
            display: flex;
            align-items: flex-start;
            gap: 28px;
            padding: 28px 32px;
            border-bottom: 1px solid var(--color-border);
            transition: var(--transition-base);
            position: relative;
        }

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

        .news-list-item:hover {
            background: var(--color-bg-light);
        }

        .news-date {
            flex-shrink: 0;
            min-width: 84px;
            text-align: center;
            background: var(--color-bg);
            border-radius: 10px;
            padding: 10px 8px;
            border: 1px solid var(--color-border);
        }

        .news-date .date-day {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            font-family: var(--font-family-num);
            line-height: 1.2;
        }

        .news-date .date-month {
            font-size: 12px;
            color: var(--color-text-weak);
            font-family: var(--font-family-num);
        }

        .news-content {
            flex: 1;
            min-width: 0;
        }

        .news-content .news-cat {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }

        .news-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-primary);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .news-content .news-summary {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 10px;
        }

        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            transition: var(--transition-base);
            position: relative;
        }

        .read-more::after {
            content: '→';
            font-size: 15px;
            transition: transform 0.25s ease;
        }

        .read-more:hover {
            color: var(--color-accent);
        }

        .read-more:hover::after {
            transform: translateX(4px);
        }

        .news-meta-info {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--color-text-weak);
            margin-top: 8px;
        }

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

        /* ============ 深度阅读推荐 ============ */
        .deep-read-section {
            padding-top: 20px;
            padding-bottom: 80px;
        }

        .deep-read-section .section-title {
            margin-bottom: 8px;
        }

        .deep-read-section .section-desc {
            margin-bottom: 28px;
        }

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

        .deep-read-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: var(--transition-smooth);
            cursor: pointer;
        }

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

        .deep-read-card .card-image {
            width: 100%;
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .deep-read-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .deep-read-card:hover .card-image img {
            transform: scale(1.06);
        }

        .deep-read-card .card-image .overlay-tag {
            position: absolute;
            bottom: 12px;
            left: 12px;
            background: rgba(26, 43, 60, 0.82);
            color: #fff;
            font-size: 11px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 16px;
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .deep-read-card .card-body {
            padding: 20px 22px 22px;
        }

        .deep-read-card .card-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            line-height: 1.55;
            margin-bottom: 8px;
            transition: var(--transition-base);
        }

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

        .deep-read-card .card-body p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .deep-read-card .card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition-base);
        }

        .deep-read-card .card-link::after {
            content: '→';
            transition: transform 0.25s ease;
        }

        .deep-read-card:hover .card-link {
            color: var(--color-accent);
        }

        .deep-read-card:hover .card-link::after {
            transform: translateX(4px);
        }

        /* ============ CTA 订阅区 ============ */
        .newsletter-cta {
            padding-top: 60px;
            padding-bottom: 80px;
        }

        .newsletter-wrapper {
            background: linear-gradient(135deg, var(--color-bg-light) 0%, #F5F7FB 100%);
            border-radius: var(--radius-overlay);
            padding: 48px 56px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
        }

        .newsletter-left h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }

        .newsletter-left p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .newsletter-left .highlight-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .newsletter-left .highlight-list li {
            font-size: 13px;
            color: var(--color-text-secondary);
            background: var(--color-card-bg);
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--color-border);
            font-weight: 500;
        }

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

        .newsletter-right .form-row {
            display: flex;
            gap: 12px;
        }

        .newsletter-right .form-group {
            flex: 1;
        }

        .newsletter-right label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            margin-bottom: 5px;
        }

        .newsletter-right input,
        .newsletter-right select {
            width: 100%;
            height: 44px;
            border: 1px solid #D6E2EF;
            border-radius: var(--radius-input);
            padding: 0 14px;
            font-size: 14px;
            color: var(--color-text-primary);
            background: var(--color-card-bg);
            transition: var(--transition-base);
        }

        .newsletter-right input:focus,
        .newsletter-right select:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(27, 94, 158, 0.15);
        }

        .newsletter-right .submit-btn {
            height: 44px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: var(--transition-base);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            letter-spacing: 0.5px;
        }

        .newsletter-right .submit-btn:hover {
            background: var(--color-accent-hover);
        }

        .newsletter-right .submit-btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding-top: 56px;
            padding-bottom: 0;
        }

        .site-footer .container {
            padding-bottom: 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.6fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            display: inline-block;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--color-footer-text);
            line-height: 1.8;
            opacity: 0.85;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

        .footer-col ul li {
            margin-bottom: 9px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-footer-text);
            opacity: 0.75;
            transition: var(--transition-base);
        }

        .footer-col ul li a:hover {
            opacity: 1;
            color: var(--color-accent);
        }

        .footer-contact p {
            font-size: 13px;
            color: var(--color-footer-text);
            opacity: 0.75;
            line-height: 1.7;
            margin-bottom: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(216, 225, 236, 0.15);
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: rgba(216, 225, 236, 0.6);
        }

        .footer-bottom .legal-links {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .footer-bottom .legal-links a {
            color: rgba(216, 225, 236, 0.65);
            transition: var(--transition-base);
        }

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

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .deep-read-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .newsletter-wrapper {
                padding: 36px 32px;
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
                background: var(--color-card-bg);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 12px 0;
                box-shadow: 0 12px 28px rgba(31, 58, 92, 0.12);
                border-bottom: 1px solid var(--color-border);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.35s ease;
                z-index: 1001;
            }

            .main-nav.nav-open {
                display: flex;
                max-height: 520px;
                overflow-y: auto;
            }

            .main-nav a {
                width: 100%;
                height: auto;
                padding: 14px 24px;
                font-size: 15px;
                border-bottom: 1px solid var(--color-border);
                border-radius: 0;
            }

            .main-nav a.nav-cta {
                margin: 10px 24px;
                width: auto;
                justify-content: center;
                border-bottom: none;
            }

            .nav-toggle {
                display: flex;
            }

            .page-header {
                min-height: 200px;
                max-height: 260px;
            }

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

            .news-list-item {
                flex-direction: column;
                gap: 14px;
                padding: 20px 18px;
            }

            .news-date {
                flex-direction: row;
                align-items: center;
                gap: 8px;
                min-width: auto;
                padding: 6px 14px;
                display: inline-flex;
                border-radius: 8px;
            }

            .news-date .date-day {
                font-size: 16px;
            }

            .news-date .date-month {
                font-size: 11px;
            }

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

            .newsletter-wrapper {
                padding: 28px 20px;
            }

            .newsletter-right .form-row {
                flex-direction: column;
                gap: 10px;
            }

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

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

            .section {
                padding-top: var(--space-mobile-section);
                padding-bottom: var(--space-mobile-section);
            }

            .section-title {
                font-size: 23px;
            }
        }

        @media (max-width: 520px) {
            .top-info-bar .top-actions {
                display: none;
            }

            .top-info-bar .container {
                justify-content: center;
            }

            .page-header {
                min-height: 180px;
                max-height: 220px;
            }

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

            .page-header .header-sub {
                font-size: 13px;
            }

            .news-list-item {
                padding: 16px 14px;
            }

            .news-content h3 {
                font-size: 16px;
            }

            .deep-read-card .card-image {
                height: 150px;
            }

            .newsletter-wrapper {
                padding: 22px 16px;
                border-radius: 12px;
            }

            .newsletter-left h2 {
                font-size: 20px;
            }
        }

        @media (min-width: 769px) {
            .nav-toggle {
                display: none;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1B5E9E;
            --color-primary-hover: #164A7D;
            --color-primary-active: #0F3C5F;
            --color-accent: #00B884;
            --color-accent-hover: #00A374;
            --color-highlight: #F5A623;
            --color-bg: #F4F7FA;
            --color-bg-light: #EAF2FB;
            --color-card-bg: #FFFFFF;
            --color-text-primary: #1A2B3C;
            --color-text-secondary: #5B6B7C;
            --color-text-weak: #8A9AAB;
            --color-border: #E3EAF3;
            --color-footer-bg: #142633;
            --color-footer-text: #D8E1EC;
            --color-error: #D64545;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-overlay: 16px;
            --shadow-card: 0 8px 20px rgba(31, 58, 92, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(31, 58, 92, 0.12);
            --shadow-nav: 0 2px 8px rgba(31, 58, 92, 0.04);
            --space-desktop-section: 80px;
            --space-mobile-section: 48px;
            --container-max: 1200px;
            --container-padding-desktop: 24px;
            --container-padding-mobile: 16px;
            --font-family-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-family-num: 'DIN Alternate', 'Oxanium', 'SF Mono', 'Segoe UI', monospace;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-family-cn);
            background-color: var(--color-bg);
            color: var(--color-text-primary);
            line-height: 1.85;
            font-size: 15px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-padding-desktop);
            padding-right: var(--container-padding-desktop);
        }

        .section {
            padding-top: var(--space-desktop-section);
            padding-bottom: var(--space-desktop-section);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            line-height: 1.4;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 32px;
        }

        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-bg-light);
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            border: 1px solid rgba(27, 94, 158, 0.15);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 22px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.3px;
            transition: var(--transition-base);
            border: 1px solid transparent;
            white-space: nowrap;
            user-select: none;
        }

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

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            color: #fff;
        }
        .btn-primary:active {
            background: var(--color-primary-active);
        }

        .btn-secondary {
            background: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-secondary:hover {
            background: var(--color-bg-light);
            color: var(--color-primary);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--color-accent-hover);
            color: #fff;
        }

        .btn-sm {
            height: 36px;
            padding: 0 16px;
            font-size: 13px;
        }
        .btn-lg {
            height: 50px;
            padding: 0 32px;
            font-size: 16px;
            border-radius: 10px;
        }
        .btn-block {
            width: 100%;
        }

        /* ========== TOP INFO BAR ========== */
        .top-info-bar {
            background: #EEF4FA;
            height: 36px;
            display: flex;
            align-items: center;
            font-size: 12px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid rgba(227, 234, 243, 0.6);
        }
        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .top-info-bar .domain-text {
            letter-spacing: 0.3px;
            user-select: text;
            font-family: var(--font-family-num);
            font-size: 12px;
        }
        .top-info-bar .top-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-info-bar .top-actions a {
            color: var(--color-text-secondary);
            font-size: 12px;
            transition: var(--transition-base);
            position: relative;
        }
        .top-info-bar .top-actions a:hover {
            color: var(--color-primary);
        }
        .top-info-bar .top-actions a+a::before {
            content: '';
            display: inline-block;
            width: 1px;
            height: 12px;
            background: #C9D8E8;
            margin-right: 16px;
            vertical-align: -1px;
        }

        /* ========== HEADER / NAV ========== */
        .main-header {
            background: var(--color-card-bg);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-nav);
            height: 76px;
            display: flex;
            align-items: center;
        }
        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.3px;
        }
        .logo-text span {
            color: var(--color-accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 6px;
            position: relative;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(27, 94, 158, 0.05);
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(27, 94, 158, 0.06);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 14px;
            right: 14px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 3px 3px 0 0;
        }
        .main-nav a.nav-cta {
            background: var(--color-accent);
            color: #fff;
            padding: 8px 18px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 13px;
            margin-left: 8px;
        }
        .main-nav a.nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff;
        }
        .main-nav a.nav-cta.active::after {
            display: none;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: 1px solid var(--color-border);
            transition: var(--transition-base);
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-text-primary);
            border-radius: 2px;
            transition: var(--transition-base);
        }
        .nav-toggle:hover {
            border-color: var(--color-primary);
            background: var(--color-bg-light);
        }

        .mobile-nav-drawer {
            display: none;
            position: fixed;
            top: 76px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 20px 40px rgba(31, 58, 92, 0.15);
            z-index: 999;
            padding: 16px 0;
            max-height: calc(100vh - 76px);
            overflow-y: auto;
        }
        .mobile-nav-drawer.open {
            display: block;
        }
        .mobile-nav-drawer a {
            display: block;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-primary);
            border-left: 3px solid transparent;
            transition: var(--transition-base);
        }
        .mobile-nav-drawer a:hover,
        .mobile-nav-drawer a.active {
            background: var(--color-bg-light);
            color: var(--color-primary);
            border-left-color: var(--color-primary);
        }
        .mobile-nav-drawer a.nav-cta {
            margin: 8px 16px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 8px;
            text-align: center;
            border-left: none;
            padding: 12px 20px;
        }
        .mobile-nav-drawer a.nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff;
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            background: var(--color-bg-light);
            border-bottom: 1px solid var(--color-border);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -15%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(27, 94, 158, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.5px;
            line-height: 1.35;
            margin-bottom: 14px;
        }
        .page-banner .banner-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 780px;
            line-height: 1.9;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-weak);
            margin-bottom: 14px;
        }
        .breadcrumb-nav a {
            color: var(--color-primary);
            transition: var(--transition-base);
        }
        .breadcrumb-nav a:hover {
            color: var(--color-primary-hover);
            text-decoration: underline;
        }
        .breadcrumb-nav .sep {
            color: #C9D8E8;
        }

        /* ========== METRIC CARDS ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }
        .metric-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .metric-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            opacity: 0;
            transition: var(--transition-base);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }
        .metric-card:hover::after {
            opacity: 1;
        }
        .metric-card .metric-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .metric-card .metric-label .dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
        }
        .metric-card .metric-value {
            font-family: var(--font-family-num);
            font-size: 34px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .metric-card .metric-value .unit {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            letter-spacing: 0;
            margin-left: 2px;
        }
        .metric-card .metric-note {
            font-size: 13px;
            color: var(--color-text-weak);
            line-height: 1.6;
        }
        .metric-card .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            margin-bottom: 8px;
        }
        .metric-card .metric-trend.up {
            color: var(--color-accent);
        }
        .metric-card .metric-trend.highlight {
            color: var(--color-highlight);
        }

        /* ========== DEEP CONTENT BLOCKS ========== */
        .deep-content-block {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 36px 40px;
            margin-bottom: 28px;
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 32px;
            align-items: start;
        }
        .deep-content-block .text-col h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .deep-content-block .text-col p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 12px;
        }
        .deep-content-block .text-col p strong {
            color: var(--color-text-primary);
            font-weight: 600;
        }
        .deep-content-block .image-col {
            border-radius: 10px;
            overflow: hidden;
            position: relative;
        }
        .deep-content-block .image-col img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 10px;
            transition: var(--transition-smooth);
        }
        .deep-content-block .image-col:hover img {
            transform: scale(1.03);
        }
        .deep-content-block .image-col .img-caption {
            font-size: 12px;
            color: var(--color-text-weak);
            text-align: center;
            padding-top: 8px;
        }

        /* ========== CHART PLACEHOLDER ========== */
        .charts-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-bottom: 28px;
        }
        .chart-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 28px 24px;
            transition: var(--transition-base);
        }
        .chart-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(27, 94, 158, 0.3);
        }
        .chart-card .chart-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .chart-card .chart-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
        }
        .chart-card .chart-badge {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(0, 184, 132, 0.08);
            padding: 3px 10px;
            border-radius: 12px;
        }

        /* CSS Bar Chart */
        .bar-chart {
            display: flex;
            align-items: flex-end;
            gap: 12px;
            height: 180px;
            padding-top: 10px;
        }
        .bar-chart .bar-group {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            height: 100%;
            justify-content: flex-end;
        }
        .bar-chart .bar {
            width: 100%;
            max-width: 48px;
            border-radius: 6px 6px 0 0;
            transition: var(--transition-smooth);
            position: relative;
            min-height: 8px;
        }
        .bar-chart .bar:hover {
            opacity: 0.8;
        }
        .bar-chart .bar-label {
            font-size: 11px;
            color: var(--color-text-weak);
            font-weight: 500;
        }
        .bar-chart .bar-value {
            font-size: 11px;
            font-weight: 700;
            font-family: var(--font-family-num);
            color: var(--color-text-primary);
        }

        /* CSS Line Chart (simulated) */
        .line-chart-svg {
            width: 100%;
            height: 180px;
            overflow: visible;
        }
        .line-chart-svg .grid-line {
            stroke: var(--color-border);
            stroke-width: 1;
        }
        .line-chart-svg .data-line {
            fill: none;
            stroke: var(--color-primary);
            stroke-width: 2.5;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .line-chart-svg .data-line.accent {
            stroke: var(--color-accent);
            stroke-width: 2;
        }
        .line-chart-svg .data-point {
            fill: var(--color-primary);
            stroke: #fff;
            stroke-width: 2;
        }
        .line-chart-svg .data-point.accent {
            fill: var(--color-accent);
        }
        .line-chart-legend {
            display: flex;
            gap: 20px;
            margin-top: 12px;
            font-size: 12px;
            color: var(--color-text-secondary);
        }
        .line-chart-legend .legend-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 6px;
        }

        /* Heatmap */
        .heatmap-grid {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            gap: 4px;
        }
        .heatmap-cell {
            aspect-ratio: 1;
            border-radius: 4px;
            transition: var(--transition-base);
            cursor: default;
            position: relative;
        }
        .heatmap-cell:hover {
            transform: scale(1.15);
            z-index: 2;
            box-shadow: 0 4px 12px rgba(31, 58, 92, 0.25);
        }
        .heatmap-cell.h1 {
            background: #EAF2FB;
        }
        .heatmap-cell.h2 {
            background: #C9DCF0;
        }
        .heatmap-cell.h3 {
            background: #8FB8DD;
        }
        .heatmap-cell.h4 {
            background: #5B8FBC;
        }
        .heatmap-cell.h5 {
            background: #1B5E9E;
        }
        .heatmap-cell.h6 {
            background: #0F3C5F;
        }
        .heatmap-cell.hot {
            background: var(--color-accent);
        }
        .heatmap-cell.highlight {
            background: var(--color-highlight);
        }
        .heatmap-labels {
            display: flex;
            justify-content: space-between;
            margin-top: 8px;
            font-size: 11px;
            color: var(--color-text-weak);
        }

        /* ========== DATA TABLE ========== */
        .data-table-wrapper {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            margin-bottom: 28px;
        }
        .data-table-wrapper .table-header {
            padding: 20px 24px;
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .data-table-wrapper .table-header h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-primary);
        }
        .data-table-wrapper .table-header .table-note {
            font-size: 13px;
            color: var(--color-text-weak);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }
        .data-table th {
            background: var(--color-bg-light);
            color: var(--color-text-primary);
            font-weight: 600;
            text-align: left;
            padding: 14px 20px;
            font-size: 13px;
            border-bottom: 1px solid var(--color-border);
            white-space: nowrap;
        }
        .data-table td {
            padding: 14px 20px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid var(--color-border);
            font-size: 13.5px;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tbody tr:hover td {
            background: rgba(27, 94, 158, 0.03);
        }
        .data-table .trend-up {
            color: var(--color-accent);
            font-weight: 600;
        }
        .data-table .trend-down {
            color: var(--color-error);
            font-weight: 600;
        }
        .data-table .table-highlight {
            background: rgba(0, 184, 132, 0.06);
            font-weight: 600;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
        }
        .faq-item {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(27, 94, 158, 0.35);
            box-shadow: 0 4px 14px rgba(31, 58, 92, 0.08);
        }
        .faq-item.open {
            border-color: var(--color-primary);
            background: #F4F8FC;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            transition: var(--transition-base);
            user-select: none;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            transition: var(--transition-base);
            line-height: 1;
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 20px 16px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
            animation: fadeIn 0.3s ease;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ========== CTA FORM ========== */
        .cta-section {
            background: linear-gradient(135deg, #EAF2FB 0%, #F5F7FB 100%);
            border-radius: var(--radius-overlay);
            border: 1px solid rgba(27, 94, 158, 0.12);
            padding: 48px 52px;
            margin-top: 40px;
            margin-bottom: 40px;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-left h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .cta-left p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 20px;
        }
        .cta-left .cta-benefits {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .cta-left .cta-benefits li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text-primary);
        }
        .cta-left .cta-benefits li .check {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #fff;
            font-size: 11px;
            flex-shrink: 0;
        }

        .cta-form .form-group {
            margin-bottom: 16px;
        }
        .cta-form label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            margin-bottom: 6px;
        }
        .cta-form label .required {
            color: var(--color-error);
            font-weight: 600;
        }
        .cta-form input,
        .cta-form select,
        .cta-form textarea {
            width: 100%;
            height: 44px;
            border: 1px solid #D6E2EF;
            border-radius: var(--radius-input);
            padding: 0 12px;
            font-size: 14px;
            color: var(--color-text-primary);
            background: #fff;
            transition: var(--transition-base);
        }
        .cta-form textarea {
            height: 100px;
            padding: 12px;
            resize: vertical;
            line-height: 1.7;
        }
        .cta-form input:focus,
        .cta-form select:focus,
        .cta-form textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(27, 94, 158, 0.15);
        }
        .cta-form input.error,
        .cta-form select.error,
        .cta-form textarea.error {
            border-color: var(--color-error);
            box-shadow: 0 0 0 3px rgba(214, 69, 69, 0.12);
        }
        .cta-form .form-error-msg {
            font-size: 12px;
            color: var(--color-error);
            margin-top: 4px;
            display: none;
        }
        .cta-form .form-error-msg.show {
            display: block;
        }
        .cta-form .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .cta-form .form-submit-row {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 20px;
        }
        .cta-form .form-submit-row .privacy-note {
            font-size: 12px;
            color: var(--color-text-weak);
            line-height: 1.5;
        }
        .form-success-msg {
            display: none;
            background: rgba(0, 184, 132, 0.1);
            border: 1px solid rgba(0, 184, 132, 0.3);
            color: var(--color-accent);
            padding: 14px 18px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            margin-top: 16px;
        }
        .form-success-msg.show {
            display: block;
            animation: fadeIn 0.4s ease;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 60px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(216, 225, 236, 0.12);
        }
        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.3px;
            display: inline-block;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 13.5px;
            color: rgba(216, 225, 236, 0.75);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 13.5px;
            color: rgba(216, 225, 236, 0.75);
            transition: var(--transition-base);
            display: inline-block;
        }
        .footer-col ul a:hover {
            color: var(--color-accent);
            transform: translateX(3px);
        }
        .footer-contact p {
            font-size: 13px;
            color: rgba(216, 225, 236, 0.7);
            margin-bottom: 6px;
            line-height: 1.7;
        }
        .footer-contact p strong {
            color: #fff;
            font-weight: 600;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 18px 0 22px;
            font-size: 12px;
            color: rgba(216, 225, 236, 0.55);
        }
        .legal-links {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .legal-links a {
            color: rgba(216, 225, 236, 0.7);
            transition: var(--transition-base);
        }
        .legal-links a:hover {
            color: var(--color-accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .main-nav a {
                padding: 8px 10px;
                font-size: 13px;
            }
            .main-nav a.nav-cta {
                padding: 8px 14px;
                font-size: 12px;
            }
            .metrics-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 14px;
            }
            .deep-content-block {
                grid-template-columns: 1fr 220px;
                padding: 28px;
            }
            .charts-grid {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
        }

        @media (max-width: 900px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .deep-content-block {
                grid-template-columns: 1fr;
                padding: 24px;
                gap: 20px;
            }
            .deep-content-block .image-col img {
                height: 160px;
            }
            .charts-grid {
                grid-template-columns: 1fr;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-section {
                padding: 32px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .main-header {
                height: 68px;
            }
            .mobile-nav-drawer {
                top: 68px;
                max-height: calc(100vh - 68px);
            }
            .logo-text {
                font-size: 18px;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }
            .page-banner {
                padding: 36px 0 28px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .section {
                padding-top: var(--space-mobile-section);
                padding-bottom: var(--space-mobile-section);
            }
            .section-title {
                font-size: 24px;
            }
            .metric-card .metric-value {
                font-size: 26px;
            }
            .cta-form .form-row {
                grid-template-columns: 1fr;
            }
            .chart-card {
                padding: 20px 16px;
            }
            .bar-chart .bar {
                max-width: 36px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding-left: var(--container-padding-mobile);
                padding-right: var(--container-padding-mobile);
            }
            .top-info-bar {
                height: 32px;
                font-size: 11px;
            }
            .top-info-bar .top-actions {
                display: none;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-card {
                padding: 16px;
            }
            .metric-card .metric-value {
                font-size: 22px;
            }
            .metric-card .metric-label {
                font-size: 12px;
            }
            .metric-card .metric-note {
                font-size: 11.5px;
            }
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner .banner-desc {
                font-size: 14px;
            }
            .deep-content-block {
                padding: 18px;
            }
            .deep-content-block .text-col h3 {
                font-size: 17px;
            }
            .data-table th,
            .data-table td {
                padding: 10px 12px;
                font-size: 12px;
            }
            .cta-section {
                padding: 24px 16px;
                border-radius: 10px;
            }
            .cta-left h2 {
                font-size: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .heatmap-grid {
                grid-template-columns: repeat(7, 1fr);
                gap: 2px;
            }
            .bar-chart {
                gap: 6px;
            }
            .bar-chart .bar {
                max-width: 28px;
            }
            .cta-form .form-submit-row {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-lg {
                width: 100%;
            }
        }

        @media (max-width: 420px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .metric-card .metric-value {
                font-size: 28px;
            }
            .page-banner h1 {
                font-size: 21px;
            }
            .data-table-wrapper .table-header {
                padding: 14px 16px;
                flex-direction: column;
                align-items: flex-start;
            }
            .data-table {
                font-size: 11.5px;
            }
            .data-table th,
            .data-table td {
                padding: 8px 10px;
            }
            .breadcrumb-nav {
                font-size: 12px;
                flex-wrap: wrap;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 13px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1B5E9E;
            --color-primary-hover: #164A7D;
            --color-primary-active: #0F3C5F;
            --color-accent: #00B884;
            --color-accent-hover: #00A374;
            --color-highlight: #F5A623;
            --color-bg: #F4F7FA;
            --color-bg-light: #EAF2FB;
            --color-card-bg: #FFFFFF;
            --color-text-primary: #1A2B3C;
            --color-text-secondary: #5B6B7C;
            --color-text-weak: #8A9AAB;
            --color-border: #E3EAF3;
            --color-footer-bg: #142633;
            --color-footer-text: #D8E1EC;
            --color-error: #D64545;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-overlay: 16px;
            --shadow-card: 0 8px 20px rgba(31, 58, 92, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(31, 58, 92, 0.12);
            --shadow-nav: 0 2px 8px rgba(31, 58, 92, 0.04);
            --space-desktop-section: 80px;
            --space-mobile-section: 48px;
            --container-max: 1200px;
            --container-padding-desktop: 24px;
            --container-padding-mobile: 16px;
            --font-family-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-family-num: 'DIN Alternate', 'Oxanium', 'SF Mono', 'Segoe UI', monospace;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-family-cn);
            background-color: var(--color-bg);
            color: var(--color-text-primary);
            line-height: 1.85;
            font-size: 15px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-padding-desktop);
            padding-right: var(--container-padding-desktop);
        }

        .section {
            padding-top: var(--space-desktop-section);
            padding-bottom: var(--space-desktop-section);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            line-height: 1.4;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 32px;
        }

        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-bg-light);
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            border: 1px solid rgba(27, 94, 158, 0.15);
        }

        /* ============ TOP INFO BAR ============ */
        .top-info-bar {
            background: #EEF4FA;
            height: 36px;
            display: flex;
            align-items: center;
            font-size: 12px;
            color: var(--color-text-secondary);
        }
        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .top-info-bar .domain-text {
            letter-spacing: 0.3px;
            user-select: text;
        }
        .top-info-bar .top-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-info-bar .top-actions a {
            color: var(--color-text-secondary);
            font-size: 12px;
            transition: var(--transition-base);
            position: relative;
        }
        .top-info-bar .top-actions a:hover {
            color: var(--color-primary);
        }

        /* ============ HEADER / NAV ============ */
        .main-header {
            background: var(--color-card-bg);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-nav);
            height: 76px;
            display: flex;
            align-items: center;
        }
        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
        }
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--color-accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 14px;
            position: relative;
            white-space: nowrap;
            border-radius: 4px;
            transition: var(--transition-base);
        }
        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(27, 94, 158, 0.04);
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 28px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 3px 3px 0 0;
        }
        .main-nav .nav-cta {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: 6px;
            margin-left: 8px;
        }
        .main-nav .nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff;
        }
        .main-nav .nav-cta.active::after {
            display: none;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 4px;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--color-text-primary);
            border-radius: 3px;
            transition: var(--transition-base);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 76px;
            left: 0;
            right: 0;
            background: var(--color-card-bg);
            z-index: 999;
            padding: 16px 24px 24px;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 16px 32px rgba(31, 58, 92, 0.12);
            flex-direction: column;
            gap: 4px;
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer a {
            padding: 14px 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-primary);
            border-bottom: 1px solid rgba(227, 234, 243, 0.5);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .mobile-drawer a:last-child {
            border-bottom: none;
        }
        .mobile-drawer a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-drawer .nav-cta {
            background: var(--color-accent);
            color: #fff;
            border-radius: 6px;
            text-align: center;
            justify-content: center;
            font-weight: 600;
            padding: 12px;
        }

        /* ============ PAGE HERO ============ */
        .page-hero {
            background: var(--color-bg-light);
            border-bottom: 1px solid var(--color-border);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }
        .page-hero .container {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text-primary);
            line-height: 1.35;
            letter-spacing: -0.8px;
            margin-bottom: 16px;
        }
        .page-hero .hero-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            max-width: 620px;
            margin-bottom: 24px;
        }
        .page-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 28px;
        }
        .page-hero .hero-meta-stat {
            background: var(--color-card-bg);
            border-radius: 10px;
            padding: 12px 20px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            min-width: 120px;
        }
        .page-hero .hero-meta-stat .num {
            font-family: var(--font-family-num);
            font-size: 26px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .page-hero .hero-meta-stat .lbl {
            font-size: 12px;
            color: var(--color-text-secondary);
        }
        .page-hero .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .page-hero .hero-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--color-border);
        }
        .page-hero .hero-image img {
            width: 100%;
            height: 260px;
            object-fit: cover;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 22px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition-base);
            border: none;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
        }
        .btn-primary:active {
            background: var(--color-primary-active);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-bg-light);
        }
        .btn-accent {
            background: var(--color-accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--color-accent-hover);
        }
        .btn-accent:active {
            background: var(--color-accent-hover);
        }

        /* ============ SERVICE DETAIL SECTION ============ */
        .service-detail-section {
            background: var(--color-bg);
        }
        .service-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding: 40px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .service-block:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .service-block:first-child {
            padding-top: 0;
        }
        .service-block.reverse {
            direction: rtl;
        }
        .service-block.reverse>* {
            direction: ltr;
        }
        .service-block-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }
        .service-block-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .service-block-content .service-points {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }
        .service-block-content .service-points span {
            background: var(--color-bg-light);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 6px;
            border: 1px solid rgba(27, 94, 158, 0.12);
        }
        .service-block-content .service-stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .service-block-content .service-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .service-block-content .service-stats .stat-num {
            font-family: var(--font-family-num);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .service-block-content .service-stats .stat-lbl {
            font-size: 12px;
            color: var(--color-text-secondary);
        }
        .service-block-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
        }
        .service-block-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        /* ============ AUDIENCE SECTION ============ */
        .audience-section {
            background: var(--color-card-bg);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .audience-card {
            background: var(--color-bg);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            border: 1px solid var(--color-border);
            transition: var(--transition-base);
        }
        .audience-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-3px);
        }
        .audience-card .audience-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 14px;
            color: var(--color-primary);
        }
        .audience-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 8px;
        }
        .audience-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ============ PROCESS SECTION ============ */
        .process-section {
            background: var(--color-bg);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--color-border);
            z-index: 0;
        }
        .process-step {
            position: relative;
            z-index: 1;
            text-align: center;
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            padding: 28px 20px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }
        .process-step:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-family: var(--font-family-num);
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            letter-spacing: -0.5px;
        }
        .process-step h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ============ FEATURES SECTION ============ */
        .features-section {
            background: var(--color-card-bg);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .feature-item {
            display: flex;
            gap: 16px;
            padding: 24px;
            background: var(--color-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            transition: var(--transition-base);
        }
        .feature-item:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-card);
        }
        .feature-check {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            margin-top: 2px;
        }
        .feature-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 6px;
        }
        .feature-item p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ============ FAQ SECTION ============ */
        .faq-section {
            background: var(--color-bg);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item.active {
            border-color: var(--color-primary);
            background: #F4F8FC;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            user-select: none;
            gap: 12px;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-bg-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            transition: var(--transition-base);
        }
        .faq-item.active .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.85;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            background: linear-gradient(135deg, #EAF2FB 0%, #F5F7FB 100%);
            border-top: 1px solid var(--color-border);
        }
        .cta-wrapper {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-info h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.4px;
        }
        .cta-info p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 20px;
        }
        .cta-info .cta-benefits {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 24px;
        }
        .cta-info .cta-benefits li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-primary);
        }
        .cta-info .cta-benefits li::before {
            content: '✓';
            color: var(--color-accent);
            font-weight: 700;
            font-size: 16px;
        }
        .cta-form {
            background: var(--color-card-bg);
            padding: 32px;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
        }
        .cta-form h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 20px;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .form-group.full-width {
            grid-column: span 2;
        }
        .form-group label {
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            height: 44px;
            border: 1px solid #D6E2EF;
            border-radius: var(--radius-input);
            padding: 0 12px;
            font-size: 14px;
            color: var(--color-text-primary);
            background: #fff;
            transition: var(--transition-base);
            width: 100%;
        }
        .form-group textarea {
            height: auto;
            padding: 12px;
            resize: vertical;
            min-height: 90px;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(27, 94, 158, 0.15);
            outline: none;
        }
        .form-group .form-error {
            font-size: 12px;
            color: var(--color-error);
            display: none;
        }
        .form-group.has-error input {
            border-color: var(--color-error);
        }
        .form-group.has-error .form-error {
            display: block;
        }
        .form-submit {
            grid-column: span 2;
        }
        .form-submit .btn {
            width: 100%;
            height: 48px;
            font-size: 15px;
        }
        .form-note {
            grid-column: span 2;
            font-size: 12px;
            color: var(--color-text-weak);
            text-align: center;
            margin-top: 4px;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 56px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }
        .footer-brand p {
            margin-top: 12px;
            font-size: 13px;
            color: #A8B8C8;
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: #A8B8C8;
            transition: var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-contact p {
            font-size: 13px;
            color: #A8B8C8;
            margin-bottom: 6px;
            line-height: 1.7;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: #8A9AAB;
        }
        .footer-bottom .legal-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-bottom .legal-links a {
            color: #8A9AAB;
            transition: var(--transition-base);
        }
        .footer-bottom .legal-links a:hover {
            color: var(--color-accent);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .page-hero .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .page-hero .hero-image img {
                height: 220px;
            }
            .audience-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .section {
                padding-top: var(--space-mobile-section);
                padding-bottom: var(--space-mobile-section);
            }
            .section-title {
                font-size: 24px;
            }
            .page-hero {
                padding: 36px 0 32px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .page-hero .hero-meta-stat .num {
                font-size: 22px;
            }
            .service-block {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 28px 0;
            }
            .service-block.reverse {
                direction: ltr;
            }
            .service-block-image img {
                height: 200px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .cta-wrapper {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width,
            .form-submit,
            .form-note {
                grid-column: span 1;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding-left: var(--container-padding-mobile);
                padding-right: var(--container-padding-mobile);
            }
            .top-info-bar .top-actions {
                display: none;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .page-hero .hero-meta {
                gap: 8px;
            }
            .page-hero .hero-meta-stat {
                min-width: 90px;
                padding: 10px 14px;
            }
            .page-hero .hero-meta-stat .num {
                font-size: 20px;
            }
            .audience-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .service-block-content .service-stats {
                gap: 16px;
            }
            .service-block-content .service-stats .stat-num {
                font-size: 24px;
            }
            .cta-form {
                padding: 24px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1B5E9E;
            --color-primary-hover: #164A7D;
            --color-primary-active: #0F3C5F;
            --color-accent: #00B884;
            --color-accent-hover: #00A374;
            --color-highlight: #F5A623;
            --color-bg: #F4F7FA;
            --color-bg-light: #EAF2FB;
            --color-card-bg: #FFFFFF;
            --color-text-primary: #1A2B3C;
            --color-text-secondary: #5B6B7C;
            --color-text-weak: #8A9AAB;
            --color-border: #E3EAF3;
            --color-footer-bg: #142633;
            --color-footer-text: #D8E1EC;
            --color-error: #D64545;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-overlay: 16px;
            --shadow-card: 0 8px 20px rgba(31, 58, 92, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(31, 58, 92, 0.12);
            --shadow-nav: 0 2px 8px rgba(31, 58, 92, 0.04);
            --space-desktop-section: 80px;
            --space-mobile-section: 48px;
            --container-max: 1200px;
            --container-padding-desktop: 24px;
            --container-padding-mobile: 16px;
            --font-family-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-family-num: 'DIN Alternate', 'Oxanium', 'SF Mono', 'Segoe UI', monospace;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-family-cn);
            background-color: var(--color-bg);
            color: var(--color-text-primary);
            line-height: 1.85;
            font-size: 15px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-padding-desktop);
            padding-right: var(--container-padding-desktop);
        }

        .section {
            padding-top: var(--space-desktop-section);
            padding-bottom: var(--space-desktop-section);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            line-height: 1.4;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 760px;
            line-height: 1.9;
            margin-bottom: 32px;
        }

        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-bg-light);
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            border: 1px solid rgba(27, 94, 158, 0.15);
        }

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

        .section-header .tag {
            margin-bottom: 10px;
        }

        /* ============ 顶部信息条 ============ */
        .top-info-bar {
            background: #EEF4FA;
            height: 36px;
            display: flex;
            align-items: center;
            font-size: 12px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid rgba(227, 234, 243, 0.6);
        }

        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .top-info-bar .domain-text {
            letter-spacing: 0.3px;
            user-select: text;
            color: var(--color-text-secondary);
        }

        .top-info-bar .top-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .top-info-bar .top-actions a {
            color: var(--color-text-secondary);
            font-size: 12px;
            transition: var(--transition-base);
            position: relative;
        }

        .top-info-bar .top-actions a+a::before {
            content: '';
            display: inline-block;
            width: 1px;
            height: 12px;
            background: #C9D8E8;
            margin-right: 16px;
            vertical-align: -1px;
        }

        .top-info-bar .top-actions a:hover {
            color: var(--color-primary);
        }

        /* ============ 主导航 ============ */
        .main-header {
            background: var(--color-card-bg);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-nav);
            height: 76px;
            display: flex;
            align-items: center;
        }

        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -1px;
            flex-shrink: 0;
            font-family: var(--font-family-num);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            padding: 6px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 6px;
            border-bottom: 3px solid transparent;
            transition: var(--transition-base);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(27, 94, 158, 0.04);
            border-bottom-color: rgba(27, 94, 158, 0.25);
        }

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

        .nav-cta {
            background: var(--color-accent);
            color: #fff !important;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 600;
            text-align: center;
            border-bottom: none !important;
            margin-left: 4px;
        }

        .nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff !important;
            border-bottom: none !important;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 10px;
            border-radius: 8px;
            background: transparent;
            border: 1px solid var(--color-border);
            transition: var(--transition-base);
        }

        .menu-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--color-text-primary);
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .menu-toggle:hover {
            background: var(--color-bg-light);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 112px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 999;
            padding: 24px 16px;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
            box-shadow: 0 10px 30px rgba(31, 58, 92, 0.1);
        }

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

        .mobile-drawer a {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text-primary);
            border-radius: 8px;
            border-bottom: 1px solid var(--color-border);
            transition: var(--transition-base);
        }

        .mobile-drawer a:hover {
            background: var(--color-bg-light);
            color: var(--color-primary);
        }

        .mobile-drawer a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: var(--color-bg-light);
        }

        .mobile-drawer .nav-cta {
            text-align: center;
            margin-top: 8px;
            color: #fff;
            background: var(--color-accent);
            border-radius: var(--radius-btn);
        }

        /* ============ 页头横幅 ============ */
        .page-banner {
            background: linear-gradient(135deg, #EAF2FB 0%, #F5F7FB 60%, #EEF6F2 100%);
            border-bottom: 1px solid var(--color-border);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(27, 94, 158, 0.06);
            pointer-events: none;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -100px;
            right: 120px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(0, 184, 132, 0.05);
            pointer-events: none;
        }

        .page-banner .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            font-size: 13px;
            color: var(--color-text-weak);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

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

        .breadcrumb .separator {
            color: #C9D8E8;
        }

        .page-banner h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.5px;
            line-height: 1.35;
            max-width: 820px;
        }

        .page-banner .lead {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.9;
        }

        /* ============ 对比表格区块 ============ */
        .comparison-section {
            background: #fff;
        }

        .comparison-card {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .comparison-header {
            display: grid;
            grid-template-columns: 180px 1fr 1fr;
            background: #FAFCFE;
            border-bottom: 2px solid var(--color-border);
        }

        .comparison-header>div {
            padding: 18px 20px;
            font-weight: 700;
            font-size: 15px;
            text-align: center;
        }

        .comparison-header .col-label {
            text-align: left;
            color: var(--color-text-secondary);
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.5px;
        }

        .comparison-header .col-average {
            color: var(--color-text-secondary);
            background: #F7F9FC;
        }

        .comparison-header .col-mk {
            color: var(--color-primary);
            background: rgba(27, 94, 158, 0.06);
            position: relative;
        }

        .comparison-header .col-mk::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px 2px 0 0;
        }

        .comparison-row {
            display: grid;
            grid-template-columns: 180px 1fr 1fr;
            border-bottom: 1px solid var(--color-border);
            transition: var(--transition-base);
        }

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

        .comparison-row:hover {
            background: rgba(244, 247, 250, 0.7);
        }

        .comparison-row>div {
            padding: 16px 20px;
            font-size: 14px;
            line-height: 1.7;
            display: flex;
            align-items: center;
        }

        .comparison-row .metric-name {
            font-weight: 600;
            color: var(--color-text-primary);
            font-size: 14px;
            align-items: flex-start;
            flex-direction: column;
            justify-content: center;
            gap: 4px;
        }

        .comparison-row .metric-name small {
            font-weight: 400;
            font-size: 12px;
            color: var(--color-text-weak);
            display: block;
        }

        .comparison-row .average-value {
            color: var(--color-text-secondary);
            background: rgba(247, 249, 252, 0.6);
            border-right: 1px dashed var(--color-border);
            align-items: flex-start;
            flex-direction: column;
            gap: 6px;
        }

        .comparison-row .mk-value {
            color: var(--color-text-primary);
            background: rgba(27, 94, 158, 0.02);
            align-items: flex-start;
            flex-direction: column;
            gap: 6px;
            position: relative;
        }

        .comparison-row .mk-value::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--color-accent);
            opacity: 0.7;
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            white-space: nowrap;
        }

        .status-badge.advantage {
            background: rgba(0, 184, 132, 0.1);
            color: #00875F;
            border: 1px solid rgba(0, 184, 132, 0.25);
        }

        .status-badge.neutral {
            background: rgba(139, 152, 170, 0.1);
            color: var(--color-text-secondary);
            border: 1px solid rgba(139, 152, 170, 0.25);
        }

        .comparison-note {
            padding: 16px 20px;
            background: #FAFCFE;
            border-top: 1px solid var(--color-border);
            font-size: 13px;
            color: var(--color-text-weak);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-note .note-icon {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: rgba(27, 94, 158, 0.1);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            flex-shrink: 0;
        }

        /* ============ 案例卡片 ============ */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .case-card {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(27, 94, 158, 0.4);
        }

        .case-card-image {
            width: 100%;
            height: 160px;
            object-fit: cover;
            background: var(--color-bg-light);
        }

        .case-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .case-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .case-card-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }

        .case-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 10px;
        }

        .case-metric {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-bg-light);
            padding: 4px 10px;
            border-radius: 6px;
            border: 1px solid rgba(27, 94, 158, 0.15);
            white-space: nowrap;
        }

        .case-metric.highlight {
            color: #00875F;
            background: rgba(0, 184, 132, 0.08);
            border-color: rgba(0, 184, 132, 0.25);
        }

        .case-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition-base);
        }

        .case-card-link:hover {
            color: var(--color-accent);
            gap: 8px;
        }

        .case-card-link .arrow {
            font-size: 16px;
            line-height: 1;
        }

        /* ============ 深度解析 ============ */
        .analysis-section {
            background: #fff;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .analysis-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
            align-items: start;
        }

        .analysis-block:last-child {
            margin-bottom: 0;
        }

        .analysis-text h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            line-height: 1.5;
        }

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

        .analysis-text p:last-child {
            margin-bottom: 0;
        }

        .analysis-visual {
            background: var(--color-bg-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
        }

        .analysis-visual img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .analysis-visual .visual-caption {
            padding: 12px 16px;
            font-size: 12px;
            color: var(--color-text-weak);
            text-align: center;
            background: rgba(255, 255, 255, 0.7);
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--color-bg);
        }

        .faq-list {
            max-width: 800px;
        }

        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--color-card-bg);
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(27, 94, 158, 0.3);
        }

        .faq-item.active {
            border-color: var(--color-primary);
            background: #F4F8FC;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            gap: 12px;
            transition: var(--transition-base);
            user-select: none;
        }

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

        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-bg-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
            transition: var(--transition-smooth);
        }

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

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

        .faq-item.active .faq-answer {
            max-height: 200px;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.85;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, #EAF2FB 0%, #F5F7FB 70%, #EEF6F2 100%);
            padding-top: var(--space-desktop-section);
            padding-bottom: var(--space-desktop-section);
        }

        .cta-panel {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 40px 48px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .cta-panel h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .cta-panel p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 20px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 22px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition-base);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }

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

        .btn-primary:active {
            background: var(--color-primary-active);
        }

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

        .btn-outline:hover {
            background: var(--color-bg-light);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--color-accent-hover);
        }

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

        .btn-accent:focus-visible {
            outline-color: var(--color-accent);
        }

        .cta-metrics {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .cta-metric-item {
            text-align: left;
        }

        .cta-metric-value {
            font-size: 26px;
            font-weight: 700;
            font-family: var(--font-family-num);
            color: var(--color-primary);
            line-height: 1.2;
        }

        .cta-metric-label {
            font-size: 12px;
            color: var(--color-text-weak);
            margin-top: 2px;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 48px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: block;
            margin-bottom: 12px;
        }

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

        .footer-brand p {
            font-size: 13px;
            color: var(--color-footer-text);
            line-height: 1.8;
            opacity: 0.85;
        }

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

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

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-footer-text);
            opacity: 0.85;
            transition: var(--transition-base);
            display: inline-block;
        }

        .footer-col ul li a:hover {
            color: #fff;
            opacity: 1;
            transform: translateX(2px);
        }

        .footer-contact p {
            font-size: 13px;
            color: var(--color-footer-text);
            opacity: 0.85;
            line-height: 1.8;
            margin-bottom: 8px;
        }

        .footer-bottom {
            padding: 16px 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: var(--color-footer-text);
            opacity: 0.75;
        }

        .legal-links {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }

        .legal-links a {
            color: var(--color-footer-text);
            transition: var(--transition-base);
        }

        .legal-links a:hover {
            color: #fff;
        }

        /* ============ 响应式断点 ============ */
        @media (max-width: 1024px) {
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .comparison-header {
                grid-template-columns: 140px 1fr 1fr;
            }

            .comparison-row {
                grid-template-columns: 140px 1fr 1fr;
            }

            .comparison-header>div,
            .comparison-row>div {
                padding: 12px 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding-top: var(--space-mobile-section);
                padding-bottom: var(--space-mobile-section);
            }

            .page-banner {
                padding: 32px 0 28px;
            }

            .page-banner h1 {
                font-size: 26px;
            }

            .page-banner .lead {
                font-size: 14px;
            }

            .main-nav {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

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

            .comparison-header {
                grid-template-columns: 100px 1fr 1fr;
            }

            .comparison-row {
                grid-template-columns: 100px 1fr 1fr;
            }

            .comparison-header>div,
            .comparison-row>div {
                padding: 10px 12px;
                font-size: 12px;
            }

            .comparison-header .col-label,
            .comparison-row .metric-name {
                font-size: 12px;
            }

            .comparison-row .metric-name small {
                font-size: 10px;
            }

            .status-badge {
                font-size: 10px;
                padding: 2px 8px;
            }

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

            .cta-panel h2 {
                font-size: 22px;
            }

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

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

        @media (max-width: 640px) {
            .top-info-bar .top-actions {
                display: none;
            }

            .top-info-bar .container {
                justify-content: center;
            }

            .container {
                padding-left: var(--container-padding-mobile);
                padding-right: var(--container-padding-mobile);
            }

            .page-banner h1 {
                font-size: 22px;
            }

            .comparison-header {
                grid-template-columns: 80px 1fr 1fr;
            }

            .comparison-row {
                grid-template-columns: 80px 1fr 1fr;
            }

            .comparison-header>div,
            .comparison-row>div {
                padding: 8px 10px;
                font-size: 11px;
            }

            .comparison-row .metric-name {
                font-size: 11px;
            }

            .comparison-row .metric-name small {
                font-size: 9px;
            }

            .case-card-image {
                height: 140px;
            }

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

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

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

/* roulang page: category5 */
:root {
            --color-primary: #1B5E9E;
            --color-primary-hover: #164A7D;
            --color-primary-active: #0F3C5F;
            --color-accent: #00B884;
            --color-accent-hover: #00A374;
            --color-highlight: #F5A623;
            --color-bg: #F4F7FA;
            --color-bg-light: #EAF2FB;
            --color-card-bg: #FFFFFF;
            --color-text-primary: #1A2B3C;
            --color-text-secondary: #5B6B7C;
            --color-text-weak: #8A9AAB;
            --color-border: #E3EAF3;
            --color-footer-bg: #142633;
            --color-footer-text: #D8E1EC;
            --color-error: #D64545;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-overlay: 16px;
            --shadow-card: 0 8px 20px rgba(31, 58, 92, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(31, 58, 92, 0.12);
            --shadow-nav: 0 2px 8px rgba(31, 58, 92, 0.04);
            --space-desktop-section: 80px;
            --space-mobile-section: 48px;
            --container-max: 1200px;
            --container-padding-desktop: 24px;
            --container-padding-mobile: 16px;
            --font-family-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-family-num: 'DIN Alternate', 'Oxanium', 'SF Mono', 'Segoe UI', monospace;
            --transition-base: all 0.25s ease;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            box-sizing: border-box;
        }
        *,
        *::before,
        *::after {
            box-sizing: inherit;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-family-cn);
            background-color: var(--color-bg);
            color: var(--color-text-primary);
            line-height: 1.85;
            font-size: 15px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-padding-desktop);
            padding-right: var(--container-padding-desktop);
        }
        .section {
            padding-top: var(--space-desktop-section);
            padding-bottom: var(--space-desktop-section);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            line-height: 1.4;
        }
        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 32px;
        }
        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-bg-light);
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            border: 1px solid rgba(27, 94, 158, 0.15);
        }
        .tag-accent {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: #ffffff;
            background: var(--color-accent);
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            transition: var(--transition-base);
            height: 44px;
            padding: 0 22px;
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(27, 94, 158, 0.2);
        }
        .btn-primary:active {
            background: var(--color-primary-active);
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-bg-light);
            border-color: var(--color-primary);
        }
        .btn-cta {
            background: var(--color-accent);
            color: #fff;
        }
        .btn-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(0, 184, 132, 0.25);
        }
        .btn-cta:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn:disabled {
            opacity: 0.55;
            cursor: not-allowed;
            transform: none !important;
            box-shadow: none !important;
        }
        .top-info-bar {
            background: #EEF4FA;
            height: 36px;
            display: flex;
            align-items: center;
            font-size: 12px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid rgba(27, 94, 158, 0.06);
        }
        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .top-info-bar .domain-text {
            letter-spacing: 0.3px;
            user-select: text;
            font-size: 12px;
            color: var(--color-text-secondary);
        }
        .top-info-bar .top-actions {
            display: flex;
            align-items: center;
            gap: 0;
        }
        .top-info-bar .top-actions a {
            color: var(--color-text-secondary);
            font-size: 12px;
            transition: var(--transition-base);
            position: relative;
            margin-left: 16px;
        }
        .top-info-bar .top-actions a:hover {
            color: var(--color-primary);
        }
        .top-info-bar .top-actions a+a::before {
            content: '';
            display: inline-block;
            width: 1px;
            height: 12px;
            background: #C9D8E8;
            margin-right: 16px;
            vertical-align: -1px;
        }
        .main-header {
            background: var(--color-card-bg);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-nav);
            height: 76px;
            display: flex;
            align-items: center;
        }
        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            font-family: var(--font-family-num);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            height: 100%;
            flex-shrink: 0;
        }
        .main-nav a {
            display: flex;
            align-items: center;
            height: 100%;
            padding: 0 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            transition: var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
            transition: var(--transition-base);
        }
        .main-nav a:hover {
            color: var(--color-primary);
        }
        .main-nav a:hover::after {
            width: 60%;
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            width: 60%;
        }
        .main-nav a.nav-cta {
            background: var(--color-accent);
            color: #fff;
            height: 38px;
            border-radius: var(--radius-btn);
            padding: 0 18px;
            margin-left: 10px;
            align-self: center;
            font-weight: 600;
        }
        .main-nav a.nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0, 184, 132, 0.3);
        }
        .main-nav a.nav-cta::after {
            display: none;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            padding: 6px;
            border-radius: 4px;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-text-primary);
            border-radius: 2px;
            transition: var(--transition-base);
        }
        .page-hero {
            background: linear-gradient(135deg, #EEF4FA 0%, #F5F8FC 40%, #E8F2FA 100%);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(27, 94, 158, 0.06);
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(0, 184, 132, 0.05);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.5px;
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .page-hero .hero-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 18px;
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            align-items: baseline;
            gap: 6px;
            font-size: 13px;
            color: var(--color-text-secondary);
        }
        .hero-stat strong {
            font-size: 24px;
            font-weight: 700;
            font-family: var(--font-family-num);
            color: var(--color-primary);
            letter-spacing: -0.5px;
        }
        .hero-stat .unit {
            font-size: 13px;
            color: var(--color-text-weak);
        }
        .value-props {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 36px;
        }
        .prop-card {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
            text-align: left;
        }
        .prop-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(27, 94, 158, 0.3);
            transform: translateY(-2px);
        }
        .prop-card .prop-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 12px;
            color: var(--color-primary);
            font-size: 16px;
        }
        .prop-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .prop-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .form-section {
            background: linear-gradient(135deg, #EAF2FB 0%, #F5F7FB 60%, #F0F5FA 100%);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            padding: 56px 0;
        }
        .form-wrapper {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 40px;
            align-items: stretch;
        }
        .form-info {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .form-info .section-title {
            font-size: 24px;
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .form-info .info-text {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.95;
            margin-bottom: 18px;
        }
        .form-info .process-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .form-info .process-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .form-info .process-num {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 600;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .form-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            padding: 32px 30px;
            box-shadow: 0 16px 40px rgba(31, 58, 92, 0.1);
            border: 1px solid var(--color-border);
            height: fit-content;
        }
        .form-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 6px;
            letter-spacing: -0.3px;
        }
        .form-card .form-sub {
            font-size: 13px;
            color: var(--color-text-weak);
            margin-bottom: 24px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            margin-bottom: 6px;
        }
        .form-group label .required {
            color: var(--color-error);
            margin-left: 2px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            min-height: 44px;
            border: 1px solid #D6E2EF;
            border-radius: var(--radius-input);
            padding: 10px 12px;
            font-size: 14px;
            color: var(--color-text-primary);
            background: var(--color-card-bg);
            transition: var(--transition-base);
            line-height: 1.5;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(27, 94, 158, 0.15);
        }
        .form-group input.error,
        .form-group select.error,
        .form-group textarea.error {
            border-color: var(--color-error);
        }
        .form-group .error-msg {
            font-size: 12px;
            color: var(--color-error);
            margin-top: 4px;
            display: none;
        }
        .form-group .error-msg.show {
            display: block;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-submit {
            width: 100%;
            height: 48px;
            background: var(--color-accent);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: var(--transition-base);
            letter-spacing: 0.5px;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .form-submit:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(0, 184, 132, 0.3);
        }
        .form-submit:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .form-note {
            font-size: 12px;
            color: var(--color-text-weak);
            margin-top: 12px;
            text-align: center;
            line-height: 1.6;
        }
        .faq-section {
            background: var(--color-bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(27, 94, 158, 0.3);
        }
        .faq-item.open {
            border-color: var(--color-primary);
            background: #F4F8FC;
            box-shadow: 0 4px 12px rgba(31, 58, 92, 0.08);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            gap: 16px;
            user-select: none;
            transition: var(--transition-base);
            text-align: left;
            width: 100%;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--color-primary);
            flex-shrink: 0;
            transition: var(--transition-base);
        }
        .faq-item.open .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.85;
        }
        .faq-item.open .faq-answer {
            padding: 0 20px 18px;
            max-height: 300px;
        }
        .contact-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .contact-card {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
        }
        .contact-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: rgba(27, 94, 158, 0.25);
        }
        .contact-card .contact-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            color: var(--color-primary);
            font-size: 20px;
        }
        .contact-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 6px;
        }
        .contact-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .assurance-section {
            background: var(--color-card-bg);
            border-top: 1px solid var(--color-border);
            padding: 48px 0;
        }
        .assurance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 24px;
        }
        .assurance-item {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
            padding: 18px;
            border-left: 3px solid var(--color-accent);
            background: var(--color-bg-light);
            border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
        }
        .assurance-item .assurance-icon {
            color: var(--color-accent);
            font-size: 18px;
        }
        .assurance-item h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
        }
        .assurance-item p {
            font-size: 12px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 48px 0 20px;
            font-size: 13px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 0.8fr 0.9fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(216, 225, 236, 0.7);
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 13px;
            color: rgba(216, 225, 236, 0.7);
            transition: var(--transition-base);
        }
        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 13px;
            color: rgba(216, 225, 236, 0.7);
            line-height: 1.8;
            margin-bottom: 6px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            border-top: 1px solid rgba(216, 225, 236, 0.12);
            padding-top: 20px;
            font-size: 12px;
            color: rgba(216, 225, 236, 0.55);
        }
        .footer-bottom .legal-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-bottom .legal-links a {
            color: rgba(216, 225, 236, 0.55);
            transition: var(--transition-base);
        }
        .footer-bottom .legal-links a:hover {
            color: #fff;
        }
        .skip-link {
            position: absolute;
            top: -60px;
            left: 16px;
            background: var(--color-primary);
            color: #fff;
            padding: 10px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            z-index: 2000;
            transition: var(--transition-base);
        }
        .skip-link:focus {
            top: 8px;
        }
        @media (max-width: 1024px) {
            .value-props {
                grid-template-columns: repeat(2, 1fr);
            }
            .contact-cards {
                grid-template-columns: repeat(3, 1fr);
            }
            .assurance-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: fixed;
                top: 76px;
                left: 0;
                right: 0;
                background: var(--color-card-bg);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px;
                gap: 0;
                box-shadow: 0 8px 24px rgba(31, 58, 92, 0.12);
                border-bottom: 2px solid var(--color-border);
                z-index: 999;
                max-height: calc(100vh - 76px);
                overflow-y: auto;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                height: 48px;
                padding: 0 16px;
                border-radius: 6px;
                align-items: center;
            }
            .main-nav a:hover {
                background: var(--color-bg-light);
            }
            .main-nav a::after {
                display: none;
            }
            .main-nav a.active {
                background: var(--color-bg-light);
                font-weight: 600;
            }
            .main-nav a.nav-cta {
                height: 44px;
                margin: 8px 0 0;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
            .page-hero {
                padding: 32px 0 28px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat strong {
                font-size: 20px;
            }
            .value-props {
                grid-template-columns: 1fr;
                gap: 12px;
                margin-top: 24px;
            }
            .form-wrapper {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .form-info .section-title {
                font-size: 22px;
            }
            .form-card {
                padding: 24px 20px;
            }
            .form-row {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .contact-cards {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .assurance-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .section {
                padding-top: var(--space-mobile-section);
                padding-bottom: var(--space-mobile-section);
            }
            .container {
                padding-left: var(--container-padding-mobile);
                padding-right: var(--container-padding-mobile);
            }
        }
        @media (max-width: 520px) {
            .top-info-bar .top-actions {
                display: none;
            }
            .page-hero h1 {
                font-size: 22px;
            }
            .page-hero .hero-desc {
                font-size: 14px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 8px;
            }
            .section-title {
                font-size: 24px;
            }
            .btn {
                height: 40px;
                padding: 0 18px;
                font-size: 14px;
            }
            .form-card {
                padding: 20px 16px;
            }
        }