/* roulang page: index */
:root {
            --primary: #3E72E7;
            --primary-dark: #2F5AC2;
            --primary-light: #EAF1FF;
            --secondary: #18243F;
            --accent-cyan: #2BC5C3;
            --accent-orange: #F6B042;
            --bg-page: #F5F7FB;
            --bg-section: #FFFFFF;
            --text-main: #18243F;
            --text-body: #3C4A5F;
            --text-muted: #6B7A93;
            --border-color: #DCE5F2;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(24, 36, 63, 0.04);
            --shadow-md: 0 8px 24px rgba(24, 36, 63, 0.06);
            --shadow-lg: 0 16px 40px rgba(24, 36, 63, 0.08);
            --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            --max-width: 1200px;
            --section-padding: 64px;
            --transition: all 0.25s ease;
            --header-height: 72px;
        }

        *,
        *::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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--secondary);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.5em;
        }

        h1 {
            font-size: 44px;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        h2 {
            font-size: 30px;
            letter-spacing: -0.3px;
        }

        h3 {
            font-size: 20px;
            letter-spacing: -0.1px;
        }

        p {
            margin-bottom: 12px;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

        .section-accent-bg {
            background-color: var(--primary-light);
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .text-center {
            text-align: center;
        }
        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
            min-height: 48px;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(62, 114, 231, 0.4);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(62, 114, 231, 0.3);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-outline-white {
            background-color: transparent;
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.7);
        }
        .btn-outline-white:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
            border-color: #FFFFFF;
            transform: translateY(-2px);
        }

        .card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: #C5D4EE;
        }

        .card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
            background-color: var(--primary-light);
        }
        .card-body {
            padding: 20px 24px 24px;
        }
        .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        .badge {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .badge-cyan {
            background-color: rgba(43, 197, 195, 0.12);
            color: #1A9E9C;
        }
        .badge-orange {
            background-color: rgba(246, 176, 66, 0.14);
            color: #D48B1A;
        }

        /* Header */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 12px rgba(24, 36, 63, 0.04);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 24px;
        }
        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent-cyan) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0;
        }
        .logo:hover {
            color: var(--secondary);
            opacity: 0.85;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .main-nav a {
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: var(--transition);
        }
        .main-nav a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .main-nav a.active {
            color: var(--primary);
            background-color: var(--primary-light);
            font-weight: 600;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-cta .btn {
            padding: 10px 20px;
            min-height: 40px;
            font-size: 14px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            background-color: #FFFFFF;
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--secondary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background-color: #FFFFFF;
            z-index: 999;
            padding: 24px;
            overflow-y: auto;
            box-shadow: var(--shadow-lg);
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav a {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            margin-bottom: 4px;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .mobile-nav .mobile-cta {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 16px;
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 80px 0 72px;
            background-image: url('/assets/images/e2001efe489792ad.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(24, 36, 63, 0.85) 0%, rgba(24, 36, 63, 0.55) 45%, rgba(24, 36, 63, 0.35) 100%);
            z-index: 0;
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 48px;
            align-items: center;
        }
        .hero-content {
            color: #FFFFFF;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #FFFFFF;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }
        .hero h1 {
            color: #FFFFFF;
            font-size: 48px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .hero h1 .highlight {
            color: var(--accent-cyan);
        }
        .hero-subtitle {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 560px;
        }
        .hero-pain-point {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: var(--accent-orange);
            background-color: rgba(246, 176, 66, 0.15);
            border: 1px solid rgba(246, 176, 66, 0.3);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .hero-form-card {
            background-color: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero-form-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
        }
        .hero-form-card .form-sub {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 18px;
            line-height: 1.6;
        }
        .form-group {
            margin-bottom: 14px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-body);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 11px 14px;
            border: 1.5px solid var(--border-color);
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text-main);
            background-color: #FAFBFD;
            transition: var(--transition);
            outline: none;
            -webkit-appearance: none;
            appearance: none;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(62, 114, 231, 0.15);
            background-color: #FFFFFF;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: #A0AEC0;
        }
        .form-error {
            font-size: 12px;
            color: #E05252;
            margin-top: 4px;
            display: none;
        }
        .form-error.show {
            display: block;
        }
        .form-success {
            font-size: 13px;
            color: #2F9E6E;
            margin-top: 8px;
            display: none;
            align-items: center;
            gap: 6px;
        }
        .form-success.show {
            display: flex;
        }

        /* Data strip */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            padding: 28px 0;
        }
        .data-strip-item {
            text-align: center;
            padding: 20px 16px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .data-strip-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .data-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -1px;
            display: block;
            margin-bottom: 4px;
        }
        .data-number .unit {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 0;
        }
        .data-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Pain points */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .pain-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .pain-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: #C5D4EE;
        }
        .pain-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }
        .pain-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
        }
        .pain-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Solution overview */
        .solution-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .solution-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .solution-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .solution-points {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 20px;
        }
        .solution-point {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 16px;
            background-color: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .solution-point:hover {
            border-color: #C5D4EE;
            box-shadow: var(--shadow-sm);
        }
        .solution-point-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background-color: rgba(43, 197, 195, 0.12);
            color: #1A9E9C;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .solution-point h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 4px;
        }
        .solution-point p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 18px;
            margin-top: 32px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(to right, var(--primary) 0%, var(--accent-cyan) 50%, var(--primary-light) 100%);
            opacity: 0.4;
            z-index: 0;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background-color: #FFFFFF;
            border: 3px solid var(--primary);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            margin: 0 auto 12px;
            box-shadow: 0 4px 12px rgba(62, 114, 231, 0.15);
            transition: var(--transition);
        }
        .step-item:hover .step-circle {
            background-color: var(--primary);
            color: #FFFFFF;
            transform: scale(1.05);
        }
        .step-item h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Results */
        .results-panel {
            background-color: var(--secondary);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            color: #FFFFFF;
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 36px;
            align-items: center;
        }
        .results-panel h3 {
            color: #FFFFFF;
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .results-panel .results-sub {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }
        .results-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-item {
            text-align: center;
            padding: 16px;
            background-color: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .metric-value {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
            display: block;
            margin-bottom: 4px;
        }
        .metric-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* Testimonials */
        .testimonials-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 20px;
            margin-top: 32px;
        }
        .testimonial-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .testimonial-card.featured {
            grid-row: span 2;
            background-color: var(--primary-light);
            border-color: rgba(62, 114, 231, 0.25);
        }
        .testimonial-quote {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
            flex: 1;
        }
        .testimonial-quote::before {
            content: '"';
            font-size: 36px;
            color: var(--primary);
            font-weight: 800;
            line-height: 1;
            display: block;
            margin-bottom: 4px;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent-cyan) 100%);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .testimonial-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--secondary);
        }
        .testimonial-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Audience */
        .audience-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }
        .audience-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .audience-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }
        .audience-tag .tag-icon {
            font-size: 16px;
        }

        /* Brand intro */
        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .brand-text h3 {
            font-size: 24px;
            margin-bottom: 16px;
        }
        .brand-text p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 14px;
        }
        .brand-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        /* Content matrix */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .matrix-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: block;
        }
        .matrix-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .matrix-card img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .matrix-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(24, 36, 63, 0.85) 0%, rgba(24, 36, 63, 0.2) 60%, transparent 100%);
            display: flex;
            align-items: flex-end;
            padding: 20px;
        }
        .matrix-overlay h4 {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .matrix-overlay span {
            color: rgba(255, 255, 255, 0.8);
            font-size: 12px;
        }

        /* News list */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 24px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            align-items: center;
            padding: 18px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: #C5D4EE;
        }
        .news-thumb {
            width: 180px;
            height: 100px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
            background-color: var(--primary-light);
        }
        .news-content {
            flex: 1;
        }
        .news-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-meta {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
        }
        .news-read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
        }

        /* Industry indicators */
        .indicators-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 24px;
        }
        .indicator-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .indicator-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .indicator-value {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: block;
            margin-bottom: 6px;
        }
        .indicator-value.cyan {
            color: var(--accent-cyan);
        }
        .indicator-value.orange {
            color: var(--accent-orange);
        }
        .indicator-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Resources */
        .resources-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 28px;
        }
        .resource-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .resource-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .resource-card img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
        }
        .resource-body {
            padding: 18px 20px 20px;
        }
        .resource-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
        }
        .resource-meta {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: #C5D4EE;
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--secondary);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
            user-select: none;
            -webkit-user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 500;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
            line-height: 1;
        }
        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }
        .faq-item summary:hover {
            color: var(--primary);
        }
        .faq-item[open] summary {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* CTA */
        .cta-card {
            background: linear-gradient(135deg, var(--primary) 0%, #5A8CF0 50%, var(--accent-cyan) 100%);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            color: #FFFFFF;
            box-shadow: var(--shadow-lg);
        }
        .cta-card h2 {
            color: #FFFFFF;
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .cta-card p {
            color: rgba(255, 255, 255, 0.88);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-card .btn-secondary {
            background-color: #FFFFFF;
            color: var(--primary);
            border-color: #FFFFFF;
        }
        .cta-card .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.9);
            color: var(--primary-dark);
        }
        .cta-card .btn-outline-white {
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.7);
        }
        .cta-card .btn-outline-white:hover {
            background-color: rgba(255, 255, 255, 0.2);
            border-color: #FFFFFF;
        }

        /* Subscribe */
        .subscribe-panel {
            background-color: var(--bg-section);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }
        .subscribe-panel h3 {
            font-size: 24px;
            margin-bottom: 10px;
        }
        .subscribe-panel p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .subscribe-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border: 1.5px solid var(--border-color);
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text-main);
            background-color: #FAFBFD;
            outline: none;
            transition: var(--transition);
        }
        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(62, 114, 231, 0.15);
            background-color: #FFFFFF;
        }
        .subscribe-form .btn-primary {
            min-height: 48px;
        }

        /* Footer */
        .footer {
            background-color: var(--secondary);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .footer-brand-desc {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #FFFFFF;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            line-height: 1.8;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 12px;
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --section-padding: 48px;
            }
            h1 {
                font-size: 38px;
            }
            h2 {
                font-size: 26px;
            }
            .hero {
                padding: 60px 0 56px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-form-card {
                max-width: 480px;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 28px;
            }
            .steps-grid::before {
                display: none;
            }
            .results-panel {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .results-metrics {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: 1fr 1fr;
            }
            .testimonial-card.featured {
                grid-row: span 1;
                grid-column: span 2;
            }
            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .indicators-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .resources-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .subscribe-panel {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding: 36px;
                --header-height: 64px;
            }
            h1 {
                font-size: 32px;
            }
            h2 {
                font-size: 24px;
            }
            h3 {
                font-size: 18px;
            }
            .section-title {
                font-size: 24px;
            }
            .main-nav {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero {
                padding: 48px 0 44px;
            }
            .hero h1 {
                font-size: 36px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .data-number {
                font-size: 28px;
            }
            .pain-grid {
                grid-template-columns: 1fr;
            }
            .solution-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .results-panel {
                padding: 28px 20px;
                border-radius: var(--radius-lg);
            }
            .results-metrics {
                gap: 12px;
            }
            .metric-value {
                font-size: 26px;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-card.featured {
                grid-column: span 1;
            }
            .brand-intro {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .news-item {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
            .indicators-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .indicator-value {
                font-size: 24px;
            }
            .resources-grid {
                grid-template-columns: 1fr;
            }
            .cta-card {
                padding: 36px 24px;
                border-radius: var(--radius-lg);
            }
            .cta-card h2 {
                font-size: 26px;
            }
            .subscribe-panel {
                padding: 32px 20px;
                border-radius: var(--radius-lg);
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input {
                min-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .mobile-nav {
                padding-top: 16px;
            }
        }

        @media (max-width: 480px) {
            :root {
                --section-padding: 28px;
            }
            .container {
                padding: 0 16px;
            }
            h1 {
                font-size: 28px;
            }
            h2,
            .section-title {
                font-size: 22px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-pain-point {
                font-size: 13px;
                padding: 6px 12px;
            }
            .data-strip {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .results-metrics {
                grid-template-columns: 1fr;
            }
            .indicators-grid {
                grid-template-columns: 1fr;
            }
            .cta-card {
                padding: 28px 18px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
                border-radius: 8px;
            }
        }

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

/* roulang page: category2 */
:root {
            --primary: #3E72E7;
            --primary-dark: #2F5AC2;
            --primary-light: #EAF1FF;
            --secondary: #18243F;
            --accent-cyan: #2BC5C3;
            --accent-orange: #F6B042;
            --bg-page: #F5F7FB;
            --bg-section: #FFFFFF;
            --text-main: #18243F;
            --text-body: #3C4A5F;
            --text-muted: #6B7A93;
            --border-color: #DCE5F2;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(24, 36, 63, 0.04);
            --shadow-md: 0 8px 24px rgba(24, 36, 63, 0.06);
            --shadow-lg: 0 16px 40px rgba(24, 36, 63, 0.08);
            --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            --max-width: 1200px;
            --section-padding: 64px;
            --transition: all 0.25s ease;
            --header-height: 72px;
        }
        @media (max-width: 1024px) {
            :root { --section-padding: 48px; }
        }
        @media (max-width: 768px) {
            :root { --section-padding: 36px; --header-height: 64px; }
        }
        @media (max-width: 520px) {
            :root { --section-padding: 28px; }
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-padding) 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-section);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .section-accent-bg {
            background-color: var(--primary-light);
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .text-center {
            text-align: center;
        }
        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
            min-height: 48px;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(62, 114, 231, 0.4);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(62, 114, 231, 0.3);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-outline-white {
            background-color: transparent;
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.7);
        }
        .btn-outline-white:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
            border-color: #FFFFFF;
            transform: translateY(-2px);
        }
        .card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: #C5D4EE;
        }
        .card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
            background-color: var(--primary-light);
        }
        /* Header */
        .site-header {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            min-height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 12px rgba(24, 36, 63, 0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .site-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .site-logo span {
            color: var(--primary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 22px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 3px;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-cta-group .btn {
            padding: 9px 18px;
            font-size: 14px;
            min-height: 40px;
            border-radius: 10px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 32px;
            height: 28px;
            justify-content: center;
            align-items: stretch;
            background: transparent;
            border: none;
        }
        .nav-toggle span {
            height: 3px;
            width: 100%;
            background-color: var(--secondary);
            border-radius: 3px;
            transition: var(--transition);
            display: block;
        }
        .nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
        .nav-toggle.open span:nth-child(2) { opacity: 0; }
        .nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
        /* Compact hero */
        .compact-hero {
            background-color: var(--secondary);
            background-image: linear-gradient(135deg, rgba(24,36,63,0.91) 0%, rgba(62,114,231,0.78) 55%, rgba(24,36,63,0.93) 100%), url('/assets/images/e2001efe489792ad.webp');
            background-size: cover;
            background-position: center;
            color: #FFFFFF;
            padding: 52px 0 56px;
            position: relative;
        }
        .compact-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.75);
            margin-bottom: 22px;
            flex-wrap: wrap;
        }
        .compact-hero .breadcrumb a {
            color: rgba(255,255,255,0.85);
        }
        .compact-hero .breadcrumb a:hover {
            color: #FFFFFF;
        }
        .compact-hero .breadcrumb .sep {
            color: rgba(255,255,255,0.5);
        }
        .compact-hero h1 {
            font-size: 38px;
            font-weight: 700;
            letter-spacing: -0.4px;
            margin-bottom: 14px;
            color: #FFFFFF;
        }
        .compact-hero .hero-desc {
            font-size: 17px;
            color: rgba(255,255,255,0.85);
            max-width: 760px;
            line-height: 1.8;
        }
        /* Product list */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .product-card .card-body {
            padding: 20px;
        }
        .product-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 10px;
            letter-spacing: -0.2px;
        }
        .product-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .product-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .product-card .card-link:hover {
            color: var(--primary-dark);
        }
        .view-more-wrap {
            text-align: center;
            margin-top: 32px;
        }
        .view-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            border-bottom: 2px solid transparent;
            padding-bottom: 2px;
        }
        .view-more-link:hover {
            border-bottom-color: var(--primary);
            color: var(--primary-dark);
        }
        /* Data strip */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .data-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 22px 20px;
            text-align: center;
        }
        .data-item strong {
            display: block;
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .data-item span {
            font-size: 14px;
            color: var(--text-muted);
        }
        /* Case list */
        .case-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .case-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            position: relative;
        }
        .case-card blockquote {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin: 0 0 16px;
            border-left: 4px solid var(--accent-cyan);
            padding-left: 18px;
        }
        .case-card cite {
            font-style: normal;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            display: block;
        }
        .case-card cite span {
            font-weight: 400;
            color: var(--text-muted);
            margin-left: 6px;
        }
        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .tag {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 8px 18px;
            transition: var(--transition);
        }
        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary:hover {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .faq-item summary .faq-icon {
            font-size: 22px;
            font-weight: 400;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }
        /* CTA card */
        .cta-card {
            background: linear-gradient(135deg, var(--primary-light) 0%, #D7E4FF 50%, #EAF6F6 100%);
            border-radius: var(--radius-xl);
            padding: 48px 56px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(62, 114, 231, 0.12);
        }
        .cta-card h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .cta-card p {
            font-size: 16px;
            color: var(--text-body);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-card .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* subscribe form */
        .subscribe-form {
            max-width: 480px;
            margin: 0 auto;
            display: flex;
            gap: 12px;
        }
        .subscribe-form .form-input {
            flex: 1;
            min-width: 0;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 13px 18px;
            font-size: 15px;
            background-color: #FFFFFF;
            transition: var(--transition);
            color: var(--text-main);
        }
        .subscribe-form .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(62, 114, 231, 0.12);
        }
        .subscribe-form .form-input::placeholder {
            color: var(--text-muted);
        }
        .form-status {
            font-size: 14px;
            margin-top: 12px;
            min-height: 22px;
        }
        .form-status.success {
            color: #16A34A;
        }
        .form-status.error {
            color: #DC2626;
        }
        /* Footer */
        .footer {
            background-color: var(--secondary);
            color: rgba(255,255,255,0.75);
            padding: 56px 0 28px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .footer-brand-desc {
            font-size: 15px;
            line-height: 1.8;
            color: rgba(255,255,255,0.65);
            max-width: 320px;
        }
        .footer-col {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 8px;
        }
        .footer-col a {
            color: rgba(255,255,255,0.65);
            font-size: 14px;
        }
        .footer-col a:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 16px;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 22px;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.65);
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .product-grid { grid-template-columns: repeat(2, 1fr); }
            .data-strip { grid-template-columns: repeat(2, 1fr); }
            .case-list { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background-color: #FFFFFF;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 12px 24px 24px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 24px rgba(24,36,63,0.12);
                display: none;
                z-index: 999;
            }
            .main-nav.open { display: flex; }
            .main-nav a {
                width: 100%;
                padding: 12px 0;
                border-bottom: 1px solid var(--border-color);
                font-size: 16px;
            }
            .main-nav a.active::after { display: none; }
            .nav-cta-group { display: none; }
            .nav-toggle { display: flex; }
            .compact-hero { padding: 38px 0 42px; }
            .compact-hero h1 { font-size: 30px; }
            .section-title { font-size: 24px; }
            .cta-card { padding: 32px 24px; }
            .subscribe-form { flex-direction: column; }
        }
        @media (max-width: 520px) {
            .product-grid { grid-template-columns: 1fr; }
            .data-strip { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .section-title { font-size: 22px; }
            .compact-hero h1 { font-size: 26px; }
            .compact-hero .hero-desc { font-size: 15px; }
            .data-item strong { font-size: 26px; }
            .btn { min-height: 44px; padding: 10px 22px; }
        }

/* roulang page: category1 */
:root {
      --primary: #3E72E7;
      --primary-dark: #2F5AC2;
      --primary-light: #EAF1FF;
      --secondary: #18243F;
      --accent-cyan: #2BC5C3;
      --accent-orange: #F6B042;
      --bg-page: #F5F7FB;
      --bg-section: #FFFFFF;
      --text-main: #18243F;
      --text-body: #3C4A5F;
      --text-muted: #6B7A93;
      --border-color: #DCE5F2;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-sm: 0 2px 8px rgba(24, 36, 63, 0.04);
      --shadow-md: 0 8px 24px rgba(24, 36, 63, 0.06);
      --shadow-lg: 0 16px 40px rgba(24, 36, 63, 0.08);
      --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      --max-width: 1200px;
      --section-padding: 64px;
      --transition: all 0.25s ease;
      --header-height: 72px;
    }
    
    @media (max-width: 992px) {
      :root {
        --section-padding: 48px;
      }
    }
    @media (max-width: 768px) {
      :root {
        --section-padding: 36px;
        --header-height: 64px;
      }
    }
    @media (max-width: 480px) {
      :root {
        --section-padding: 28px;
      }
    }
    
    * {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }
    body {
      font-family: var(--font-family);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-body);
      background-color: var(--bg-page);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
      padding-top: var(--header-height);
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--primary-dark);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button,
    input,
    select,
    textarea {
      font-family: inherit;
      font-size: inherit;
      line-height: inherit;
    }
    button {
      cursor: pointer;
      border: none;
      background: none;
    }
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }
    .section {
      padding: var(--section-padding) 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-section);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-accent-bg {
      background-color: var(--primary-light);
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background-color: var(--primary-light);
      padding: 4px 14px;
      border-radius: 50px;
      letter-spacing: 0.5px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 12px;
      letter-spacing: -0.3px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 720px;
      margin-bottom: 32px;
      line-height: 1.8;
    }
    .text-center {
      text-align: center;
    }
    .text-center .section-desc {
      margin-left: auto;
      margin-right: auto;
    }
    
    /* 导航样式 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: var(--header-height);
      background-color: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 12px rgba(24, 36, 63, 0.04);
      z-index: 1050;
      display: flex;
      align-items: center;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      width: 100%;
    }
    .brand-logo {
      font-size: 20px;
      font-weight: 700;
      color: var(--secondary);
      white-space: nowrap;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-logo span {
      color: var(--primary);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 22px;
      flex-wrap: nowrap;
    }
    .main-nav a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-body);
      padding: 8px 4px;
      position: relative;
      white-space: nowrap;
      letter-spacing: 0.2px;
    }
    .main-nav a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -4px;
      width: 0;
      height: 2px;
      background-color: var(--primary);
      transition: width 0.25s ease;
    }
    .main-nav a:hover::after,
    .main-nav a.active::after {
      width: 100%;
    }
    .main-nav a.active {
      color: var(--primary);
      font-weight: 600;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .btn-sm {
      padding: 9px 18px;
      min-height: 38px;
      font-size: 14px;
      border-radius: var(--radius-md);
    }
    .mobile-menu-toggle {
      display: none;
      width: 40px;
      height: 40px;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 5px;
      background: transparent;
    }
    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--secondary);
      transition: var(--transition);
    }
    .mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
      transform: rotate(45deg) translate(5px, 5px);
    }
    .mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
      opacity: 0;
    }
    .mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
      transform: rotate(-45deg) translate(5px, -5px);
    }
    
    /* 按钮 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: var(--radius-md);
      font-size: 15px;
      font-weight: 600;
      letter-spacing: 0.3px;
      transition: var(--transition);
      border: 2px solid transparent;
      white-space: nowrap;
      min-height: 48px;
    }
    .btn:focus-visible {
      outline: 3px solid rgba(62, 114, 231, 0.4);
      outline-offset: 2px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      color: #FFFFFF;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(62, 114, 231, 0.3);
    }
    .btn-primary:active {
      transform: translateY(0);
      box-shadow: none;
    }
    .btn-secondary {
      background-color: #FFFFFF;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-secondary:hover {
      background-color: var(--primary-light);
      color: var(--primary-dark);
      border-color: var(--primary);
      transform: translateY(-2px);
    }
    .btn-outline-white {
      background-color: transparent;
      color: #FFFFFF;
      border-color: rgba(255, 255, 255, 0.7);
    }
    .btn-outline-white:hover {
      background-color: rgba(255, 255, 255, 0.15);
      color: #FFFFFF;
      border-color: #FFFFFF;
      transform: translateY(-2px);
    }
    
    /* 卡片 */
    .card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      overflow: hidden;
      height: 100%;
    }
    .card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: #C5D4EE;
    }
    .card-image {
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
      border-bottom: 1px solid var(--border-color);
    }
    .card-body {
      padding: 20px 22px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--secondary);
      line-height: 1.45;
      margin: 0;
    }
    .card-title a {
      color: inherit;
    }
    .card-title a:hover {
      color: var(--primary);
    }
    .card-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin: 0;
      flex-grow: 1;
    }
    .card-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
      padding-top: 12px;
      border-top: 1px solid var(--border-color);
    }
    .badge-tag {
      display: inline-block;
      background-color: var(--primary-light);
      color: var(--primary);
      font-size: 12px;
      font-weight: 600;
      padding: 2px 10px;
      border-radius: 50px;
      letter-spacing: 0.3px;
    }
    
    /* 分类页首屏 */
    .category-hero {
      position: relative;
      background-color: #18243F;
      background-image: linear-gradient(rgba(24, 36, 63, 0.75), rgba(24, 36, 63, 0.75)), url('/assets/images/e2001efe489792ad.webp');
      background-size: cover;
      background-position: center;
      color: #FFFFFF;
      padding: 48px 0;
      border-radius: 0 0 var(--radius-xl) var(--radius-xl);
      margin-bottom: 28px;
    }
    .category-hero .breadcrumb {
      background: transparent;
      margin-bottom: 16px;
      font-size: 14px;
      color: rgba(255,255,255,0.7);
      padding: 0;
    }
    .category-hero .breadcrumb a {
      color: rgba(255,255,255,0.8);
    }
    .category-hero .breadcrumb a:hover {
      color: #FFFFFF;
    }
    .category-hero .breadcrumb span.sep {
      margin: 0 8px;
      color: rgba(255,255,255,0.4);
    }
    .category-hero h1 {
      font-size: 36px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .category-hero p {
      font-size: 16px;
      color: rgba(255,255,255,0.8);
      max-width: 720px;
      line-height: 1.8;
      margin-bottom: 0;
    }
    .category-hero .hero-badge {
      display: inline-block;
      background: rgba(43, 197, 195, 0.2);
      border: 1px solid rgba(43, 197, 195, 0.5);
      color: #2BC5C3;
      font-size: 13px;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: 50px;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    
    /* 统计数字 */
    .stat-box {
      text-align: center;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px 16px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      height: 100%;
    }
    .stat-box:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .stat-number {
      font-size: 34px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }
    
    /* 案例卡片 */
    .case-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      height: 100%;
    }
    .case-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .case-card .case-image {
      aspect-ratio: 16/9;
      object-fit: cover;
    }
    .case-card .case-body {
      padding: 20px 22px;
    }
    .case-card .case-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 8px;
    }
    .case-card .case-text {
      font-size: 14px;
      color: var(--text-muted);
    }
    
    /* 工具格子 */
    .tool-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px 20px;
      display: flex;
      align-items: center;
      gap: 14px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      height: 100%;
    }
    .tool-item:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
      border-color: #C5D4EE;
    }
    .tool-icon {
      width: 42px;
      height: 42px;
      flex-shrink: 0;
      border-radius: 10px;
      background-color: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
    }
    .tool-info h5 {
      font-size: 15px;
      font-weight: 600;
      color: var(--secondary);
      margin-bottom: 4px;
    }
    .tool-info p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
    }
    
    /* FAQ */
    .faq-list details {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      padding: 0;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-list details:hover {
      border-color: #C5D4EE;
    }
    .faq-list summary {
      list-style: none;
      cursor: pointer;
      padding: 18px 22px;
      font-weight: 600;
      color: var(--secondary);
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #FFFFFF;
      transition: background 0.25s ease;
    }
    .faq-list summary::-webkit-details-marker {
      display: none;
    }
    .faq-list summary::after {
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      color: var(--primary);
      font-size: 14px;
      transition: transform 0.25s ease;
    }
    .faq-list details[open] summary::after {
      transform: rotate(180deg);
    }
    .faq-list details[open] summary {
      background: var(--primary-light);
      color: var(--primary-dark);
    }
    .faq-list .faq-answer {
      padding: 0 22px 18px;
      color: var(--text-body);
      font-size: 15px;
      line-height: 1.8;
    }
    
    /* CTA 订阅 */
    .cta-box {
      background: linear-gradient(135deg, #EAF1FF 0%, #F5F7FB 100%);
      border: 1px solid #C5D4EE;
      border-radius: var(--radius-xl);
      padding: 48px 40px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .cta-box h2 {
      font-size: 26px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 12px;
    }
    .cta-box p {
      color: var(--text-muted);
      max-width: 520px;
      margin: 0 auto 24px;
    }
    .subscribe-form {
      display: flex;
      max-width: 480px;
      margin: 0 auto;
      gap: 12px;
      flex-wrap: wrap;
      justify-content: center;
    }
    .subscribe-form input[type="email"] {
      flex: 1 1 240px;
      padding: 12px 18px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 15px;
      background: #FFFFFF;
      transition: var(--transition);
      min-height: 48px;
    }
    .subscribe-form input[type="email"]:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(62, 114, 231, 0.15);
    }
    .subscribe-form .btn {
      flex-shrink: 0;
    }
    .form-status {
      display: none;
      margin-top: 16px;
      font-size: 14px;
      font-weight: 600;
    }
    .form-status.success {
      display: block;
      color: #2E9E5B;
    }
    .form-status.error {
      display: block;
      color: #D64545;
    }
    
    /* 页脚 */
    .footer {
      background-color: #18243F;
      color: rgba(255,255,255,0.7);
      padding: 48px 0 24px;
      margin-top: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 32px;
    }
    .footer-brand {
      font-size: 18px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 12px;
    }
    .footer-brand-desc {
      font-size: 14px;
      line-height: 1.8;
      max-width: 320px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-col a {
      display: block;
      color: rgba(255,255,255,0.7);
      font-size: 14px;
      margin-bottom: 10px;
      transition: var(--transition);
    }
    .footer-col a:hover {
      color: #FFFFFF;
      transform: translateX(2px);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px 24px;
      font-size: 13px;
      justify-content: space-between;
      align-items: center;
    }
    .footer-bottom a {
      color: rgba(255,255,255,0.7);
    }
    .footer-bottom a:hover {
      color: #FFFFFF;
    }
    
    /* 响应式 */
    @media (max-width: 1100px) {
      .main-nav a {
        font-size: 14px;
        gap: 14px;
      }
      .header-actions .btn-sm {
        padding: 8px 12px;
        font-size: 13px;
      }
    }
    @media (max-width: 992px) {
      body {
        padding-top: var(--header-height);
      }
    }
    @media (max-width: 900px) {
      .header-inner {
        flex-wrap: nowrap;
      }
      .main-nav {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
        gap: 20px;
        box-shadow: 0 8px 24px rgba(24,36,63,0.1);
        border-bottom: 1px solid var(--border-color);
        z-index: 1049;
      }
      .main-nav.open {
        display: flex;
      }
      .mobile-menu-toggle {
        display: flex;
      }
      .header-actions {
        display: none;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
      }
    }
    @media (max-width: 768px) {
      .section-title {
        font-size: 24px;
      }
      .category-hero {
        padding: 34px 0;
      }
      .category-hero h1 {
        font-size: 28px;
      }
      .category-hero p {
        font-size: 15px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
      .cta-box {
        padding: 32px 20px;
      }
    }
    @media (max-width: 480px) {
      .container {
        padding: 0 16px;
      }
      .section-title {
        font-size: 22px;
      }
      .category-hero h1 {
        font-size: 24px;
      }
      .subscribe-form {
        flex-direction: column;
      }
      .subscribe-form input[type="email"] {
        flex: 1 1 100%;
      }
      .subscribe-form .btn {
        width: 100%;
      }
    }

/* roulang page: category3 */
:root {
        --primary: #3E72E7;
        --primary-dark: #2F5AC2;
        --primary-light: #EAF1FF;
        --secondary: #18243F;
        --accent-cyan: #2BC5C3;
        --accent-orange: #F6B042;
        --bg-page: #F5F7FB;
        --bg-section: #FFFFFF;
        --text-main: #18243F;
        --text-body: #3C4A5F;
        --text-muted: #6B7A93;
        --border-color: #DCE5F2;
        --radius-sm: 8px;
        --radius-md: 12px;
        --radius-lg: 16px;
        --radius-xl: 24px;
        --shadow-sm: 0 2px 8px rgba(24, 36, 63, 0.04);
        --shadow-md: 0 8px 24px rgba(24, 36, 63, 0.06);
        --shadow-lg: 0 16px 40px rgba(24, 36, 63, 0.08);
        --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        --max-width: 1200px;
        --section-padding: 64px;
        --transition: all 0.25s ease;
        --header-height: 72px;
    }

    *,
    *::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);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-body);
        background-color: var(--bg-page);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }

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

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

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

    button,
    input,
    select,
    textarea {
        font-family: inherit;
        font-size: inherit;
        line-height: inherit;
    }

    button {
        cursor: pointer;
        border: none;
        background: none;
    }

    .container {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }

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

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

    .section-accent-bg {
        background-color: var(--primary-light);
    }

    .section-tag {
        display: inline-block;
        font-size: 13px;
        font-weight: 600;
        color: var(--primary);
        background-color: var(--primary-light);
        padding: 4px 14px;
        border-radius: 50px;
        letter-spacing: 0.5px;
        margin-bottom: 12px;
    }

    .section-title {
        font-size: 30px;
        font-weight: 700;
        color: var(--secondary);
        margin-bottom: 12px;
        letter-spacing: -0.3px;
    }

    .section-desc {
        font-size: 16px;
        color: var(--text-muted);
        max-width: 720px;
        margin-bottom: 32px;
        line-height: 1.8;
    }

    .text-center {
        text-align: center;
    }

    .text-center .section-desc {
        margin-left: auto;
        margin-right: auto;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 28px;
        border-radius: var(--radius-md);
        font-size: 15px;
        font-weight: 600;
        letter-spacing: 0.3px;
        transition: var(--transition);
        border: 2px solid transparent;
        white-space: nowrap;
        min-height: 48px;
    }

    .btn:focus-visible {
        outline: 3px solid rgba(62, 114, 231, 0.4);
        outline-offset: 2px;
    }

    .btn-primary {
        background-color: var(--primary);
        color: #FFFFFF;
    }
    .btn-primary:hover {
        background-color: var(--primary-dark);
        color: #FFFFFF;
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(62, 114, 231, 0.3);
    }
    .btn-primary:active {
        transform: translateY(0);
        box-shadow: none;
    }

    .btn-secondary {
        background-color: #FFFFFF;
        color: var(--primary);
        border-color: var(--primary);
    }
    .btn-secondary:hover {
        background-color: var(--primary-light);
        color: var(--primary-dark);
        border-color: var(--primary);
        transform: translateY(-2px);
    }
    .btn-secondary:active {
        transform: translateY(0);
    }

    .btn-outline-white {
        background-color: transparent;
        color: #FFFFFF;
        border-color: rgba(255, 255, 255, 0.7);
    }
    .btn-outline-white:hover {
        background-color: rgba(255, 255, 255, 0.15);
        color: #FFFFFF;
        border-color: #FFFFFF;
        transform: translateY(-2px);
    }

    .card {
        background-color: #FFFFFF;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        overflow: hidden;
    }
    .card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-4px);
        border-color: #C5D4EE;
    }

    .card-image {
        width: 100%;
        aspect-ratio: 16 / 9;
        object-fit: cover;
    }

    .card-body {
        padding: 20px;
    }

    .card-title {
        font-size: 18px;
        font-weight: 700;
        color: var(--secondary);
        margin-bottom: 8px;
        letter-spacing: -0.2px;
    }

    .card-text {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
        margin-bottom: 12px;
    }

    .badge {
        display: inline-block;
        font-size: 12px;
        font-weight: 600;
        padding: 3px 12px;
        border-radius: 50px;
        letter-spacing: 0.3px;
    }
    .badge-primary {
        background-color: var(--primary-light);
        color: var(--primary);
    }
    .badge-cyan {
        background-color: rgba(43, 197, 195, 0.12);
        color: #1A9C9A;
    }
    .badge-orange {
        background-color: rgba(246, 176, 66, 0.15);
        color: #B87B20;
    }

    /* Header / Navigation */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background-color: #FFFFFF;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 2px 12px rgba(24, 36, 63, 0.04);
        height: var(--header-height);
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 32px;
        height: var(--header-height);
    }
    .logo {
        font-size: 20px;
        font-weight: 700;
        color: var(--secondary);
        letter-spacing: -0.3px;
        white-space: nowrap;
    }
    .logo span {
        color: var(--primary);
    }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 6px;
        flex-wrap: wrap;
    }
    .main-nav a {
        display: inline-flex;
        align-items: center;
        padding: 8px 14px;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-body);
        border-radius: var(--radius-md);
        transition: var(--transition);
        white-space: nowrap;
    }
    .main-nav a:hover {
        color: var(--primary);
        background-color: var(--primary-light);
    }
    .main-nav a.active {
        color: #FFFFFF;
        background-color: var(--primary);
        font-weight: 600;
    }
    .header-cta {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .header-cta .btn {
        min-height: 40px;
        padding: 8px 20px;
        font-size: 14px;
    }
    .nav-toggle {
        display: none;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-md);
        border: 1px solid var(--border-color);
        background-color: #FFFFFF;
        color: var(--secondary);
        font-size: 20px;
        transition: var(--transition);
    }
    .nav-toggle:hover {
        background-color: var(--primary-light);
        color: var(--primary);
    }

    /* Breadcrumb */
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 16px;
        flex-wrap: wrap;
    }
    .breadcrumb a {
        color: var(--text-muted);
    }
    .breadcrumb a:hover {
        color: var(--primary);
    }
    .breadcrumb .separator {
        color: #B8C4D8;
        user-select: none;
    }
    .breadcrumb .current {
        color: var(--secondary);
        font-weight: 600;
    }

    /* Category Hero */
    .category-hero {
        background-color: #FFFFFF;
        border-bottom: 1px solid var(--border-color);
        padding: 48px 0 40px;
        position: relative;
        overflow: hidden;
    }
    .category-hero::before {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        width: 500px;
        height: 100%;
        background: linear-gradient(135deg, transparent 0%, var(--primary-light) 100%);
        pointer-events: none;
        z-index: 0;
    }
    .category-hero .container {
        position: relative;
        z-index: 1;
    }
    .category-hero h1 {
        font-size: 36px;
        font-weight: 700;
        color: var(--secondary);
        letter-spacing: -0.5px;
        margin-bottom: 12px;
    }
    .category-hero .hero-desc {
        font-size: 16px;
        color: var(--text-muted);
        max-width: 680px;
        line-height: 1.8;
    }

    /* Article List Grid */
    .article-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .article-card .card-image-wrap {
        position: relative;
        overflow: hidden;
    }
    .article-card .card-image-wrap .badge {
        position: absolute;
        top: 12px;
        left: 12px;
        z-index: 2;
        background-color: rgba(255, 255, 255, 0.9);
        backdrop-filter: blur(4px);
    }
    .article-card .card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 12px;
        color: var(--text-muted);
        margin-top: 8px;
    }
    .article-card .card-meta span {
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }

    /* Tags */
    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }
    .tag-cloud a {
        display: inline-block;
        padding: 8px 18px;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-body);
        background-color: #FFFFFF;
        border: 1px solid var(--border-color);
        border-radius: 50px;
        transition: var(--transition);
    }
    .tag-cloud a:hover {
        background-color: var(--primary-light);
        color: var(--primary);
        border-color: var(--primary);
        transform: translateY(-2px);
        box-shadow: var(--shadow-sm);
    }

    /* Featured/Editorial Section */
    .editorial-card {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 24px;
        align-items: stretch;
    }
    .editorial-image {
        border-radius: var(--radius-lg);
        overflow: hidden;
        min-height: 280px;
    }
    .editorial-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .editorial-content {
        display: flex;
        flex-direction: column;
        justify-content: center;
        padding: 8px 8px 8px 0;
    }
    .editorial-content h3 {
        font-size: 24px;
        font-weight: 700;
        color: var(--secondary);
        margin-bottom: 12px;
    }
    .editorial-content p {
        font-size: 15px;
        color: var(--text-muted);
        line-height: 1.8;
        margin-bottom: 16px;
    }

    /* Stats */
    .stat-card {
        background-color: #FFFFFF;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-sm);
        padding: 28px 24px;
        text-align: center;
        transition: var(--transition);
    }
    .stat-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-4px);
    }
    .stat-card .stat-number {
        font-size: 36px;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: -0.5px;
        line-height: 1.2;
    }
    .stat-card .stat-label {
        font-size: 14px;
        color: var(--text-muted);
        margin-top: 6px;
    }

    /* CTA Banner */
    .cta-banner {
        background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
        border-radius: var(--radius-xl);
        padding: 48px 40px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
        flex-wrap: wrap;
        color: #FFFFFF;
    }
    .cta-banner h3 {
        font-size: 24px;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 8px;
    }
    .cta-banner p {
        font-size: 15px;
        color: rgba(255, 255, 255, 0.85);
        max-width: 520px;
        line-height: 1.7;
    }
    .cta-banner .btn {
        flex-shrink: 0;
    }

    /* FAQ */
    .faq-item {
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        margin-bottom: 12px;
        overflow: hidden;
        background-color: #FFFFFF;
        transition: var(--transition);
    }
    .faq-item summary {
        list-style: none;
        cursor: pointer;
        padding: 18px 24px;
        font-weight: 600;
        font-size: 15px;
        color: var(--secondary);
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        transition: var(--transition);
    }
    .faq-item summary::-webkit-details-marker {
        display: none;
    }
    .faq-item summary::after {
        content: '+';
        font-size: 22px;
        font-weight: 400;
        color: var(--primary);
        transition: var(--transition);
        flex-shrink: 0;
    }
    .faq-item[open] summary::after {
        content: '\2212';
    }
    .faq-item summary:hover {
        background-color: var(--primary-light);
        color: var(--primary-dark);
    }
    .faq-item[open] summary {
        background-color: var(--primary-light);
        color: var(--primary-dark);
    }
    .faq-answer {
        padding: 0 24px 20px;
        font-size: 14px;
        color: var(--text-body);
        line-height: 1.8;
    }

    /* Subscribe Form */
    .subscribe-form {
        display: flex;
        gap: 12px;
        max-width: 560px;
        margin: 0 auto;
        flex-wrap: wrap;
    }
    .subscribe-form input[type="email"] {
        flex: 1;
        min-width: 240px;
        padding: 12px 20px;
        border-radius: var(--radius-md);
        border: 2px solid var(--border-color);
        font-size: 15px;
        color: var(--text-main);
        transition: var(--transition);
        background-color: #FFFFFF;
        outline: none;
    }
    .subscribe-form input[type="email"]:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(62, 114, 231, 0.15);
    }
    .form-status {
        font-size: 14px;
        font-weight: 500;
        margin-top: 12px;
        text-align: center;
        min-height: 24px;
    }
    .form-status.success {
        color: #1F9D57;
    }
    .form-status.error {
        color: #D93B3B;
    }

    /* Footer */
    .footer {
        background-color: var(--secondary);
        color: rgba(255, 255, 255, 0.85);
        padding: 48px 0 0;
        margin-top: 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 32px;
        padding-bottom: 36px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .footer-brand {
        font-size: 20px;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 8px;
    }
    .footer-brand-desc {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.7);
        line-height: 1.7;
        max-width: 280px;
    }
    .footer-col h4 {
        font-size: 15px;
        font-weight: 600;
        color: #FFFFFF;
        margin-bottom: 12px;
    }
    .footer-col a {
        display: block;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.7);
        padding: 4px 0;
        transition: var(--transition);
    }
    .footer-col a:hover {
        color: #FFFFFF;
        padding-left: 4px;
    }
    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        flex-wrap: wrap;
        padding: 20px 0;
        font-size: 12px;
        color: rgba(255, 255, 255, 0.6);
    }
    .footer-bottom a {
        color: rgba(255, 255, 255, 0.7);
        font-size: 12px;
    }
    .footer-bottom a:hover {
        color: #FFFFFF;
    }
    .footer-bottom span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    /* More Link */
    .more-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 15px;
        font-weight: 600;
        color: var(--primary);
        transition: var(--transition);
    }
    .more-link:hover {
        color: var(--primary-dark);
        gap: 10px;
    }
    .more-link::after {
        content: '\2192';
        font-size: 18px;
    }

    /* Responsive */
    @media (max-width: 1024px) {
        .article-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .header-cta .btn-secondary {
            display: none;
        }
        .main-nav a {
            padding: 6px 10px;
            font-size: 13px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --section-padding: 48px;
            --header-height: 64px;
        }
        .header-inner {
            gap: 16px;
        }
        .nav-toggle {
            display: inline-flex;
        }
        .main-nav {
            display: none;
            position: absolute;
            top: var(--header-height);
            left: 0;
            right: 0;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            flex-direction: column;
            align-items: flex-start;
            padding: 16px 24px;
            gap: 4px;
            z-index: 99;
        }
        .main-nav.open {
            display: flex;
        }
        .main-nav a {
            width: 100%;
            padding: 10px 14px;
            font-size: 15px;
            border-radius: var(--radius-sm);
        }
        .header-cta .btn-primary {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
        }
        .category-hero h1 {
            font-size: 28px;
        }
        .editorial-card {
            grid-template-columns: 1fr;
        }
        .editorial-image {
            min-height: 200px;
        }
        .cta-banner {
            padding: 32px 24px;
            text-align: center;
            justify-content: center;
        }
        .section-title {
            font-size: 24px;
        }
        .stat-card .stat-number {
            font-size: 28px;
        }
    }

    @media (max-width: 520px) {
        :root {
            --section-padding: 36px;
            --header-height: 60px;
        }
        .container {
            padding: 0 16px;
        }
        .article-grid {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
        .category-hero {
            padding: 32px 0 28px;
        }
        .category-hero h1 {
            font-size: 24px;
        }
        .breadcrumb {
            font-size: 12px;
            gap: 4px;
        }
        .subscribe-form {
            flex-direction: column;
        }
        .subscribe-form input[type="email"] {
            min-width: 100%;
        }
        .btn {
            padding: 10px 22px;
            font-size: 14px;
            min-height: 44px;
        }
        .section-title {
            font-size: 22px;
        }
        .cta-banner h3 {
            font-size: 20px;
        }
        .logo {
            font-size: 17px;
        }
    }

/* roulang page: category4 */
:root {
            --primary: #3E72E7;
            --primary-dark: #2F5AC2;
            --primary-light: #EAF1FF;
            --secondary: #18243F;
            --accent-cyan: #2BC5C3;
            --accent-orange: #F6B042;
            --bg-page: #F5F7FB;
            --bg-section: #FFFFFF;
            --text-main: #18243F;
            --text-body: #3C4A5F;
            --text-muted: #6B7A93;
            --border-color: #DCE5F2;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(24, 36, 63, 0.04);
            --shadow-md: 0 8px 24px rgba(24, 36, 63, 0.06);
            --shadow-lg: 0 16px 40px rgba(24, 36, 63, 0.08);
            --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            --max-width: 1200px;
            --section-padding: 64px;
            --transition: all 0.25s ease;
            --header-height: 72px;
        }
        @media (max-width: 1024px) {
            :root {
                --section-padding: 48px;
                --header-height: 64px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-padding: 36px;
            }
        }
        @media (max-width: 480px) {
            :root {
                --section-padding: 28px;
            }
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-padding) 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-section);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .section-accent-bg {
            background-color: var(--primary-light);
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
            line-height: 1.35;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .text-center {
            text-align: center;
        }
        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
            min-height: 48px;
            text-align: center;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(62, 114, 231, 0.4);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(62, 114, 231, 0.3);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-outline-white {
            background-color: transparent;
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.7);
        }
        .btn-outline-white:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
            border-color: #FFFFFF;
            transform: translateY(-2px);
        }
        .card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: #C5D4EE;
        }
        .card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }
        .card-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 2px 10px;
            border-radius: 50px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .card-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-title a {
            color: var(--secondary);
            text-decoration: none;
        }
        .card-title a:hover {
            color: var(--primary);
        }
        .card-text {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            flex: 1;
        }
        .card-link {
            margin-top: 16px;
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card-link:hover {
            gap: 10px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .list-item {
            display: flex;
            gap: 20px;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 18px 20px;
            transition: var(--transition);
            align-items: center;
        }
        .list-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #C5D4EE;
            transform: translateY(-2px);
        }
        .list-item-thumb {
            width: 80px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .list-item-content {
            flex: 1;
        }
        .list-item-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 4px;
        }
        .list-item-desc {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* Header / Navigation */
        .site-header {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: auto;
            min-height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 16px rgba(24, 36, 63, 0.04);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .brand span {
            color: var(--primary);
        }
        .brand:hover {
            color: var(--secondary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .main-nav a {
            display: inline-block;
            padding: 10px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .main-nav a.active {
            color: var(--primary);
            background-color: var(--primary-light);
            font-weight: 700;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-actions .btn {
            padding: 10px 20px;
            min-height: 42px;
            font-size: 14px;
        }
        .menu-toggle {
            display: none;
            font-size: 28px;
            color: var(--secondary);
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px 8px;
            line-height: 1;
        }
        .menu-toggle:focus-visible {
            outline: 3px solid rgba(62, 114, 231, 0.4);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        /* Breadcrumb & Page Hero */
        .page-hero {
            background-color: var(--secondary);
            background-image: linear-gradient(135deg, rgba(24, 36, 63, 0.88) 0%, rgba(62, 114, 231, 0.78) 100%), url('/assets/images/e2001efe489792ad.webp');
            background-size: cover;
            background-position: center;
            padding: 64px 0 56px;
            color: #FFFFFF;
            position: relative;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: #FFFFFF;
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
        }
        .page-hero h1 {
            font-size: 40px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 14px;
        }
        .page-hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Resource Cards */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .resource-card .card-image {
            height: 180px;
            object-fit: cover;
        }
        .resource-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--border-color);
            margin-top: 16px;
        }
        .resource-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .tag-item {
            display: inline-block;
            padding: 8px 18px;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            cursor: default;
        }
        .tag-item:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .stat-box:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            letter-spacing: -0.5px;
        }
        .stat-label {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* Feature List */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }
        .feature-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: #C5D4EE;
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            background-color: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .feature-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 10px;
        }
        .feature-item p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background: linear-gradient(135deg, #EAF1FF 0%, #FFFFFF 50%, #EAF1FF 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            border: 1px solid var(--border-color);
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 32px;
            align-items: center;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 220px;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            font-size: 15px;
            color: var(--text-main);
            background: #FFFFFF;
            transition: var(--transition);
        }
        .subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(62, 114, 231, 0.15);
        }
        .subscribe-form .btn {
            min-height: 48px;
        }
        .form-success {
            display: none;
            color: #2E7D32;
            font-size: 14px;
            font-weight: 500;
            margin-top: 10px;
        }
        .form-error {
            display: none;
            color: #C62828;
            font-size: 14px;
            font-weight: 500;
            margin-top: 10px;
        }

        /* Footer */
        .footer {
            background-color: var(--secondary);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .footer-brand-desc {
            font-size: 15px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            margin-bottom: 10px;
            font-size: 15px;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #FFFFFF;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: space-between;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            align-items: center;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            margin: 0 4px;
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
            text-decoration: underline;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .resource-grid,
            .feature-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .nav-wrap {
                flex-wrap: wrap;
            }
            .menu-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                order: 3;
                background: #FFFFFF;
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-md);
                padding: 8px;
                gap: 2px;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                z-index: 999;
            }
            .main-nav.mobile-open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
            }
            .nav-actions {
                margin-left: auto;
            }
            .nav-actions .btn-secondary {
                display: none;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .resource-grid,
            .feature-list,
            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
            .subscribe-cta {
                grid-template-columns: 1fr;
                padding: 32px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .page-hero {
                padding: 48px 0 40px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 24px;
            }
            .resource-grid,
            .feature-list {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input[type="email"] {
                min-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .list-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .list-item-thumb {
                width: 100%;
                height: 120px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #3E72E7;
            --primary-dark: #2F5AC2;
            --primary-light: #EAF1FF;
            --secondary: #18243F;
            --accent-cyan: #2BC5C3;
            --accent-orange: #F6B042;
            --bg-page: #F5F7FB;
            --bg-section: #FFFFFF;
            --text-main: #18243F;
            --text-body: #3C4A5F;
            --text-muted: #6B7A93;
            --border-color: #DCE5F2;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(24, 36, 63, 0.04);
            --shadow-md: 0 8px 24px rgba(24, 36, 63, 0.06);
            --shadow-lg: 0 16px 40px rgba(24, 36, 63, 0.08);
            --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            --max-width: 1200px;
            --section-padding: 64px;
            --transition: all 0.25s ease;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

        .section-accent-bg {
            background-color: var(--primary-light);
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .text-center {
            text-align: center;
        }

        .text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
            min-height: 48px;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(62, 114, 231, 0.4);
            outline-offset: 2px;
        }

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

        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(62, 114, 231, 0.3);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--primary);
            border-color: var(--primary);
        }

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

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-outline-white {
            background-color: transparent;
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.7);
        }

        .btn-outline-white:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
            border-color: #FFFFFF;
            transform: translateY(-2px);
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            min-height: var(--header-height);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: var(--header-height);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .brand-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

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

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            white-space: nowrap;
        }

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

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

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-cta .btn {
            padding: 10px 20px;
            font-size: 14px;
            min-height: 40px;
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            gap: 5px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            background-color: #FFFFFF;
            transition: var(--transition);
        }

        .mobile-menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--secondary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .mobile-menu-toggle:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: var(--header-height);
            left: 0;
            right: 0;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            padding: 20px 24px;
            z-index: 999;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-bottom: 1px solid var(--border-color);
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

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

        .mobile-menu .mobile-cta {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }

        .mobile-menu .mobile-cta .btn {
            flex: 1;
            min-height: 44px;
            font-size: 14px;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: #B8C5D8;
            user-select: none;
        }

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

        /* Category Hero */
        .category-hero {
            background-color: var(--secondary);
            background-image: linear-gradient(135deg, rgba(24, 36, 63, 0.85) 0%, rgba(62, 114, 231, 0.7) 100%), url('/assets/images/e2001efe489792ad.webp');
            background-size: cover;
            background-position: center;
            color: #FFFFFF;
            padding: 48px 0 52px;
            position: relative;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .category-hero h1 {
            font-size: 40px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .category-hero .hero-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            line-height: 1.8;
        }

        .category-hero .breadcrumb {
            color: rgba(255, 255, 255, 0.7);
        }

        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }

        .category-hero .breadcrumb a:hover {
            color: #FFFFFF;
        }

        .category-hero .breadcrumb .current {
            color: #FFFFFF;
        }

        .category-hero .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
        }

        /* Research List */
        .research-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .research-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .research-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: #C5D4EE;
        }

        .research-card .card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background-color: var(--primary-light);
        }

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

        .research-card .card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .research-card .card-meta .badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 2px 10px;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }

        .research-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .research-card .card-title a {
            color: var(--secondary);
        }

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

        .research-card .card-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }

        .research-card .card-link {
            margin-top: 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

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

        .view-more-wrapper {
            text-align: center;
            margin-top: 32px;
        }

        .view-more-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            padding: 12px 24px;
            border: 2px solid var(--primary);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

        .view-more-link:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* Data Panel */
        .data-panel {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .data-panel-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .data-panel-item .data-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
            margin-bottom: 6px;
        }

        .data-panel-item .data-label {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.5;
        }

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

        .topic-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: #C5D4EE;
        }

        .topic-card .topic-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .topic-card .topic-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
        }

        .topic-card .topic-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Trend Section */
        .trend-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .trend-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 18px 22px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .trend-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #C5D4EE;
            transform: translateY(-2px);
        }

        .trend-item .trend-dot {
            flex-shrink: 0;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--accent-cyan);
            margin-top: 8px;
        }

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

        .trend-item .trend-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 4px;
        }

        .trend-item .trend-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #EAF1FF 0%, #D6E4FF 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
        }

        .cta-section .cta-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
        }

        .cta-section .cta-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 640px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }

        .cta-section .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

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

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

        .faq-item[open] {
            border-color: var(--primary);
            background-color: var(--primary-light);
        }

        .faq-item summary {
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--secondary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* Footer */
        .footer {
            background-color: var(--secondary);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 24px;
            margin-top: 32px;
        }

        .footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

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

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 280px;
        }

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

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            align-items: center;
            justify-content: space-between;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .research-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-panel {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-hero h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                padding: 0 16px;
            }
            .main-nav {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .research-list {
                grid-template-columns: 1fr;
            }
            .data-panel {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .trend-item {
                padding: 14px 16px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section .cta-title {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .category-hero {
                padding: 36px 0 40px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            :root {
                --section-padding: 40px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 12px;
                gap: 10px;
            }
            .brand-logo {
                font-size: 17px;
            }
            .data-panel {
                grid-template-columns: 1fr;
            }
            .data-panel-item .data-number {
                font-size: 28px;
            }
            .research-card .card-body {
                padding: 16px 14px 18px;
            }
            .research-card .card-title {
                font-size: 16px;
            }
            .trend-item {
                flex-direction: column;
                gap: 8px;
            }
            .trend-item .trend-dot {
                margin-top: 0;
            }
            .cta-section {
                padding: 24px 16px;
            }
            .cta-section .cta-desc {
                font-size: 14px;
            }
            .faq-item summary {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-item .faq-answer {
                padding: 0 16px 14px;
                font-size: 13px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .hero-desc {
                font-size: 14px;
            }
            :root {
                --section-padding: 28px;
            }
        }

/* roulang page: category6 */
:root {
      --primary: #3E72E7;
      --primary-dark: #2F5AC2;
      --primary-light: #EAF1FF;
      --secondary: #18243F;
      --accent-cyan: #2BC5C3;
      --accent-orange: #F6B042;
      --bg-page: #F5F7FB;
      --bg-section: #FFFFFF;
      --text-main: #18243F;
      --text-body: #3C4A5F;
      --text-muted: #6B7A93;
      --border-color: #DCE5F2;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-sm: 0 2px 8px rgba(24, 36, 63, 0.04);
      --shadow-md: 0 8px 24px rgba(24, 36, 63, 0.06);
      --shadow-lg: 0 16px 40px rgba(24, 36, 63, 0.08);
      --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      --max-width: 1200px;
      --section-padding: 64px;
      --transition: all 0.25s ease;
      --header-height: 72px;
    }

    *,
    *::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);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-body);
      background-color: var(--bg-page);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

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

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

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

    button,
    input,
    select,
    textarea {
      font-family: inherit;
      font-size: inherit;
      line-height: inherit;
    }

    button {
      cursor: pointer;
      border: none;
      background: none;
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }

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

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

    .section-accent-bg {
      background-color: var(--primary-light);
    }

    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background-color: var(--primary-light);
      padding: 4px 14px;
      border-radius: 50px;
      letter-spacing: 0.5px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 12px;
      letter-spacing: -0.3px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 720px;
      margin-bottom: 32px;
      line-height: 1.8;
    }

    .text-center {
      text-align: center;
    }

    .text-center .section-desc {
      margin-left: auto;
      margin-right: auto;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: var(--radius-md);
      font-size: 15px;
      font-weight: 600;
      letter-spacing: 0.3px;
      transition: var(--transition);
      border: 2px solid transparent;
      white-space: nowrap;
      min-height: 48px;
    }

    .btn:focus-visible {
      outline: 3px solid rgba(62, 114, 231, 0.4);
      outline-offset: 2px;
    }

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

    .btn-primary:hover {
      background-color: var(--primary-dark);
      color: #FFFFFF;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(62, 114, 231, 0.3);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: none;
    }

    .btn-secondary {
      background-color: #FFFFFF;
      color: var(--primary);
      border-color: var(--primary);
    }

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

    .btn-secondary:active {
      transform: translateY(0);
    }

    .btn-sm {
      padding: 10px 18px;
      min-height: 42px;
      font-size: 14px;
      border-radius: var(--radius-sm);
    }

    .btn-block {
      width: 100%;
    }

    .card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      overflow: hidden;
    }

    .card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: #C5D4EE;
    }

    .card-image {
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
    }

    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 12px rgba(24, 36, 63, 0.04);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: var(--header-height);
      gap: 24px;
    }

    .logo {
      font-size: 24px;
      font-weight: 700;
      color: var(--secondary);
      letter-spacing: 0.5px;
      flex-shrink: 0;
    }

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

    .main-nav {
      display: flex;
      align-items: center;
      gap: 28px;
      flex: 1;
      justify-content: center;
    }

    .main-nav a {
      color: var(--text-body);
      font-size: 15px;
      font-weight: 500;
      padding: 8px 0;
      border-bottom: 2px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

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

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

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .mobile-menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary);
      font-size: 24px;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
    }

    .mobile-menu-toggle:hover {
      background-color: #D4E2FF;
    }

    /* Drawer */
    .mobile-menu-overlay {
      position: fixed;
      inset: 0;
      background-color: rgba(24, 36, 63, 0.4);
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.25s ease;
      z-index: 999;
    }

    .mobile-menu-overlay.show {
      opacity: 1;
      pointer-events: auto;
    }

    .drawer-menu {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      width: 300px;
      background-color: #FFFFFF;
      padding: 24px;
      box-shadow: -8px 0 28px rgba(24, 36, 63, 0.12);
      transform: translateX(100%);
      transition: transform 0.25s ease;
      z-index: 1001;
      display: flex;
      flex-direction: column;
      visibility: hidden;
    }

    .drawer-menu.open {
      transform: translateX(0);
      visibility: visible;
    }

    .drawer-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
    }

    .drawer-brand {
      font-size: 20px;
      font-weight: 700;
      color: var(--secondary);
    }

    .drawer-close {
      font-size: 32px;
      color: var(--text-muted);
      line-height: 1;
      width: 40px;
      height: 40px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .drawer-close:hover {
      background-color: var(--primary-light);
      color: var(--primary);
    }

    .drawer-nav {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .drawer-nav a {
      font-size: 16px;
      font-weight: 500;
      color: var(--text-body);
      padding: 8px 0;
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .drawer-nav a:hover,
    .drawer-nav a.active {
      color: var(--primary);
    }

    .drawer-actions {
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    /* Page header */
    .page-header {
      position: relative;
      min-height: 360px;
      display: flex;
      align-items: center;
      color: #FFFFFF;
      overflow: hidden;
    }

    .page-header-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
    }

    .page-header-bg::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(24, 36, 63, 0.82) 0%, rgba(24, 36, 63, 0.55) 60%, rgba(62, 114, 231, 0.45) 100%);
    }

    .page-header-content {
      position: relative;
      z-index: 2;
      padding-top: 48px;
      padding-bottom: 48px;
      width: 100%;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      margin-bottom: 16px;
      color: rgba(255, 255, 255, 0.7);
    }

    .breadcrumb a {
      color: rgba(255, 255, 255, 0.85);
    }

    .breadcrumb a:hover {
      color: #FFFFFF;
    }

    .breadcrumb .separator {
      margin: 0 4px;
      color: rgba(255, 255, 255, 0.5);
    }

    .page-title {
      font-size: 44px;
      font-weight: 700;
      color: #FFFFFF;
      letter-spacing: -0.5px;
      margin-bottom: 14px;
    }

    .page-desc {
      font-size: 17px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.88);
      max-width: 680px;
    }

    .page-header-actions {
      margin-top: 26px;
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    /* Split layout */
    .split-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .split-content h2 {
      font-size: 28px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 16px;
      letter-spacing: -0.3px;
    }

    .split-content p {
      color: var(--text-body);
      font-size: 16px;
      line-height: 1.85;
      margin-bottom: 16px;
    }

    .split-image img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }

    /* Timeline */
    .timeline {
      position: relative;
      margin-top: 32px;
    }

    .timeline-item {
      position: relative;
      padding-left: 44px;
      margin-bottom: 32px;
      border-left: 2px solid var(--border-color);
    }

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

    .timeline-dot {
      position: absolute;
      left: -10px;
      top: 4px;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background-color: var(--primary);
      border: 4px solid #FFFFFF;
      box-shadow: 0 0 0 2px var(--border-color);
    }

    .timeline-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .timeline-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateX(4px);
    }

    .timeline-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 8px;
    }

    .timeline-card p {
      color: var(--text-muted);
      font-size: 15px;
    }

    /* Service grid */
    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 32px;
    }

    .section-head .section-desc {
      margin-bottom: 0;
    }

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

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

    .service-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 8px;
    }

    .service-card h3 a {
      color: var(--secondary);
      transition: var(--transition);
    }

    .service-card h3 a:hover {
      color: var(--primary);
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 12px;
    }

    .card-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      background-color: var(--primary-light);
      padding: 2px 10px;
      border-radius: 50px;
    }

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

    .metric-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .metric-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: #C5D4EE;
    }

    .metric-value {
      display: block;
      font-size: 34px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
      margin-bottom: 8px;
    }

    .metric-label {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

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

    .testimonial-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .testimonial-card p {
      font-size: 15px;
      line-height: 1.8;
      color: var(--text-body);
      margin-bottom: 16px;
    }

    .testimonial-card footer {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* Post list */
    .post-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .post-card {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 16px;
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .post-card img {
      width: 160px;
      height: 100px;
      object-fit: cover;
      border-radius: var(--radius-md);
      flex-shrink: 0;
    }

    .post-card-body h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .post-card-body h3 a {
      color: var(--secondary);
      transition: var(--transition);
    }

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

    .post-card-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* CTA */
    .cta-panel {
      background: linear-gradient(135deg, #FFFFFF 0%, var(--primary-light) 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 48px;
      text-align: center;
      box-shadow: var(--shadow-md);
    }

    .cta-panel h2 {
      font-size: 28px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 12px;
    }

    .cta-panel p {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 600px;
      margin: 0 auto 26px;
      line-height: 1.8;
    }

    .cta-actions {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 14px;
    }

    /* Form */
    .form-layout {
      align-items: start;
    }

    .subscribe-form {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

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

    .form-input {
      width: 100%;
      padding: 14px 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      background-color: #FFFFFF;
      font-size: 15px;
      color: var(--text-body);
      transition: var(--transition);
    }

    .form-input:focus {
      outline: 3px solid rgba(62, 114, 231, 0.15);
      border-color: var(--primary);
    }

    .form-error {
      display: none;
      font-size: 13px;
      color: #D64545;
      margin-top: 6px;
    }

    .form-success {
      display: none;
      font-size: 14px;
      color: #2E9E5B;
      margin-top: 12px;
      font-weight: 500;
    }

    .form-success.show,
    .form-error.show {
      display: block;
    }

    /* Footer */
    .footer {
      background-color: var(--secondary);
      color: rgba(255, 255, 255, 0.7);
      padding: 56px 0 24px;
    }

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

    .footer-brand {
      font-size: 22px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 12px;
    }

    .footer-brand-desc {
      font-size: 14px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.6);
      max-width: 300px;
    }

    .footer-col {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 6px;
    }

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

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 20px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.5);
    }

    .footer-bottom a {
      color: rgba(255, 255, 255, 0.7);
    }

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

    /* Responsive */
    @media (max-width: 1024px) {
      .container {
        padding: 0 20px;
      }

      .section {
        padding: 48px 0;
      }

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

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

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

      .split-layout {
        gap: 36px;
      }

      .page-title {
        font-size: 36px;
      }
    }

    @media (max-width: 768px) {
      .main-nav,
      .nav-actions {
        display: none;
      }

      .mobile-menu-toggle {
        display: flex;
      }

      .section {
        padding: 36px 0;
      }

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

      .page-title {
        font-size: 32px;
      }

      .section-title {
        font-size: 26px;
      }

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

      .split-layout {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .post-card {
        flex-direction: column;
        align-items: flex-start;
      }

      .post-card img {
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 9;
      }

      .cta-panel {
        padding: 32px 24px;
      }

      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }

      .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }
    }

    @media (max-width: 520px) {
      .section {
        padding: 28px 0;
      }

      .container {
        padding: 0 16px;
      }

      .page-title {
        font-size: 28px;
      }

      .btn {
        padding: 10px 20px;
        font-size: 14px;
      }

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

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

      .cta-actions {
        flex-direction: column;
        align-items: center;
      }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}