/* roulang page: index */
:root {
            --primary: #1a237e;
            --primary-light: #3b5bdb;
            --primary-dark: #0d1452;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-light: #f0f4ff;
            --bg-white: #ffffff;
            --text-dark: #1e1e2f;
            --text-muted: #4a4a6a;
            --text-light: #8a8aaa;
            --border-light: #e2e8f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
        }

        /* Navigation */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .logo-text i {
            -webkit-text-fill-color: var(--primary);
            color: var(--primary);
            margin-right: 8px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links a {
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary);
            background: rgba(26, 35, 126, 0.06);
        }

        .nav-links a.active {
            font-weight: 600;
            color: var(--primary);
            background: rgba(26, 35, 126, 0.10);
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
            color: #fff !important;
            padding: 8px 24px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 14px rgba(26, 35, 126, 0.25);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 35, 126, 0.35) !important;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(26, 35, 126, 0.06);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }

            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-links a {
                width: 100%;
                padding: 12px 20px;
                border-radius: 12px;
                font-size: 1.05rem;
            }

            .nav-cta {
                text-align: center;
                margin-top: 8px;
            }

            .logo-text {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 0.95rem;
            }
            .nav-container {
                height: 64px;
            }
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(26, 35, 126, 0.92), rgba(59, 91, 219, 0.85)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            text-align: center;
            padding: 80px 24px;
            overflow: hidden;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-light), transparent);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            border: 1px solid rgba(255, 255, 255, 0.20);
        }

        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero h1 span {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero p {
            font-size: 1.2rem;
            line-height: 1.7;
            opacity: 0.92;
            max-width: 680px;
            margin: 0 auto 36px;
            color: rgba(255, 255, 255, 0.92);
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .hero-actions .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(245, 158, 11, 0.45);
        }

        .hero-actions .btn-secondary {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            border: 1.5px solid rgba(255, 255, 255, 0.30);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .hero-actions .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.22);
            border-color: rgba(255, 255, 255, 0.50);
            transform: translateY(-3px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hero-stats .stat-item {
            text-align: center;
        }

        .hero-stats .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
        }

        .hero-stats .stat-label {
            font-size: 0.9rem;
            opacity: 0.8;
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 70vh;
                padding: 60px 16px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 40px;
                padding-top: 28px;
            }
            .hero-stats .stat-number {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero p {
                font-size: 0.92rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 16px;
                flex-direction: column;
                align-items: center;
            }
        }

        /* Section spacing */
        section {
            padding: 80px 0;
        }

        @media (max-width: 768px) {
            section {
                padding: 56px 0;
            }
        }

        @media (max-width: 520px) {
            section {
                padding: 40px 0;
            }
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 1.4rem;
            }
        }

        /* Cards grid */
        .grid-4,
        .grid-3,
        .grid-2 {
            display: grid;
            gap: 28px;
        }

        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

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

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

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* Card base */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

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

        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 18px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }

        .card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* Feature card with image */
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
        }

        .feature-card .card-img {
            height: 200px;
            overflow: hidden;
            background: var(--bg-light);
        }

        .feature-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: var(--transition);
        }

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

        .feature-card .card-body {
            padding: 24px 22px 26px;
        }

        .feature-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .feature-card .card-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .feature-card .card-tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(26, 35, 126, 0.08);
            color: var(--primary);
            margin-bottom: 12px;
        }

        /* CMS list */
        .cms-list .cms-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }

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

        .cms-list .cms-item:hover {
            padding-left: 8px;
        }

        .cms-item .cms-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-light);
            margin-bottom: 6px;
        }

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

        .cms-item .cms-meta .cms-cat {
            background: rgba(26, 35, 126, 0.08);
            color: var(--primary);
            padding: 0 12px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.75rem;
        }

        .cms-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .cms-item h4 a {
            color: inherit;
            transition: var(--transition);
        }

        .cms-item h4 a:hover {
            color: var(--primary);
        }

        .cms-item .cms-excerpt {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .cms-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-light);
            font-size: 1rem;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-light);
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

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

        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(26, 35, 126, 0.25);
        }

        .step-card .step-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 16px;
            margin-top: 8px;
        }

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

        .step-card p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
        }

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

        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* Trust / Stats */
        .trust-section {
            background: var(--primary);
            color: #fff;
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .trust-item .trust-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .trust-item .trust-label {
            font-size: 1rem;
            opacity: 0.85;
            margin-top: 6px;
        }

        @media (max-width: 768px) {
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .trust-item .trust-number {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 520px) {
            .trust-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .trust-item .trust-number {
                font-size: 1.8rem;
            }
        }

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

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            cursor: pointer;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }

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

        .faq-question i {
            font-size: 1.1rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            text-align: center;
            padding: 80px 24px;
        }

        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-section .btn-cta {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 18px 48px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.30);
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }

        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.45);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 16px;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta {
                padding: 16px 32px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section .btn-cta {
                width: 100%;
                justify-content: center;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 48px 0 32px;
        }

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

        .footer-brand .logo-text {
            font-size: 1.2rem;
            color: #fff;
            -webkit-text-fill-color: #fff;
            background: none;
            background-clip: unset;
            display: inline-block;
            margin-bottom: 12px;
        }

        .footer-brand .logo-text i {
            color: var(--accent);
            margin-right: 8px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            opacity: 0.75;
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-col ul a {
            font-size: 0.88rem;
            opacity: 0.75;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            opacity: 0.65;
        }

        .footer-bottom a {
            color: inherit;
        }

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

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* Utilities */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .bg-soft-primary {
            background: rgba(26, 35, 126, 0.04);
        }

        .rounded-full {
            border-radius: 50px;
        }

        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 12px;
        }
        .gap-4 {
            gap: 16px;
        }
        .gap-6 {
            gap: 24px;
        }

        .mt-2 {
            margin-top: 8px;
        }
        .mt-3 {
            margin-top: 12px;
        }
        .mt-4 {
            margin-top: 16px;
        }
        .mt-6 {
            margin-top: 24px;
        }
        .mt-8 {
            margin-top: 32px;
        }
        .mt-10 {
            margin-top: 40px;
        }
        .mb-2 {
            margin-bottom: 8px;
        }
        .mb-3 {
            margin-bottom: 12px;
        }
        .mb-4 {
            margin-bottom: 16px;
        }
        .mb-6 {
            margin-bottom: 24px;
        }

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

        /* Focus / Accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(26, 35, 126, 0.40);
            outline-offset: 2px;
        }

        /* Badge */
        .badge {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(26, 35, 126, 0.08);
            color: var(--primary);
        }

        .badge-accent {
            background: rgba(245, 158, 11, 0.15);
            color: #b45309;
        }

        .badge-success {
            background: rgba(16, 185, 129, 0.12);
            color: #047857;
        }

        /* Button base */
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            border: 1.5px solid var(--border-light);
            background: var(--bg-white);
            color: var(--text-muted);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        /* Scroll reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --secondary: #f0b429;
            --secondary-light: #f7d674;
            --accent: #3b82f6;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-dark: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 25px 50px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

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

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

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

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

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            transition: var(--transition);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-text {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.3px;
            transition: var(--transition);
        }
        .logo-text i {
            color: var(--secondary);
            font-size: 1.5rem;
        }
        .logo-text:hover {
            color: var(--primary);
            opacity: 0.92;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-links li a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--primary);
            background: rgba(30, 58, 95, 0.06);
        }
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(30, 58, 95, 0.08);
            font-weight: 600;
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--secondary);
        }
        .nav-links li a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 12px rgba(30, 58, 95, 0.25);
        }
        .nav-links li a.nav-cta:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(30, 58, 95, 0.3);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary-dark);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(30, 58, 95, 0.06);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links li a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links li a.active::after {
                display: none;
            }
            .nav-links li a.nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, #0f2440 0%, #1e3a5f 40%, #2a5298 100%);
            position: relative;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-light), transparent);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            text-align: center;
            margin: 0 auto;
        }
        .hero-content .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(240, 180, 41, 0.18);
            color: var(--secondary-light);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(240, 180, 41, 0.2);
            margin-bottom: 20px;
        }
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }
        .hero-content h1 span {
            color: var(--secondary);
        }
        .hero-content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary {
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 24px rgba(240, 180, 41, 0.35);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(240, 180, 41, 0.4);
            background: #f5c34a;
        }
        .hero-actions .btn-secondary {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(4px);
            transition: var(--transition);
            cursor: pointer;
        }
        .hero-actions .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 110px 0 60px;
                min-height: 420px;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-content p {
                font-size: 1rem;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                padding: 12px 28px;
                font-size: 0.95rem;
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .hero-content h1 {
                font-size: 1.8rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-padding-sm {
            padding: 60px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.3px;
            margin-bottom: 12px;
            text-align: center;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.8;
        }
        .section-subtitle-sm {
            max-width: 520px;
            margin-bottom: 36px;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 56px 0;
            }
            .section-padding-sm {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-3,
            .grid-4,
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== 卡片组件 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(30, 58, 95, 0.12);
        }
        .card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 18px;
            background: var(--primary);
        }
        .card .card-icon.gold {
            background: var(--secondary);
            color: var(--primary-dark);
        }
        .card .card-icon.teal {
            background: #0d9488;
        }
        .card .card-icon.rose {
            background: #e11d48;
        }
        .card .card-icon.indigo {
            background: #4f46e5;
        }
        .card .card-icon.emerald {
            background: #059669;
        }
        .card .card-icon.amber {
            background: #d97706;
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .card .card-tag {
            display: inline-block;
            background: rgba(30, 58, 95, 0.06);
            color: var(--primary);
            padding: 3px 12px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 12px;
        }

        /* ===== 流程步骤 ===== */
        .steps-wrapper {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step-counter;
        }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .step-item .step-num.gold {
            background: var(--secondary);
            color: var(--primary-dark);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .step-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--text-muted);
            opacity: 0.4;
        }

        @media (max-width: 1024px) {
            .steps-wrapper {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-arrow {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .steps-wrapper {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== 场景区块 ===== */
        .scene-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .scene-card .scene-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .scene-card .scene-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 36, 64, 0.5), transparent);
        }
        .scene-card .scene-body {
            padding: 24px 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .scene-card .scene-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .scene-card .scene-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }
        .scene-card .scene-body .scene-tag {
            margin-top: 12px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(30, 58, 95, 0.15);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: rgba(30, 58, 95, 0.03);
        }
        .faq-question i {
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f2440 0%, #1e3a5f 60%, #2a5298 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .cta-section .btn-cta {
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 16px 48px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            gap: 12px;
            box-shadow: 0 8px 28px rgba(240, 180, 41, 0.35);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(240, 180, 41, 0.4);
            background: #f5c34a;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 52px 0;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .cta-section .btn-cta {
                padding: 14px 32px;
                font-size: 1rem;
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f2440;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand .logo-text i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-top: 10px;
            max-width: 360px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }
        .footer-bottom span a {
            margin: 0 2px;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 分割线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin: 0 auto 20px;
        }

        /* ===== 统计数字 ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 16px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .stat-number span {
            color: var(--secondary);
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        @media (max-width: 1024px) {
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .stat-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 徽章/标签 ===== */
        .badge-pill {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(30, 58, 95, 0.06);
            color: var(--primary);
        }
        .badge-pill.gold {
            background: rgba(240, 180, 41, 0.15);
            color: #b8860b;
        }
        .badge-pill.green {
            background: rgba(13, 148, 136, 0.1);
            color: #0d9488;
        }

        /* ===== 工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 32px;
        }
        .mt-12 {
            margin-top: 48px;
        }
        .gap-4 {
            gap: 16px;
        }

        /* ===== 特性列表 ===== */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            max-width: 800px;
            margin: 0 auto;
        }
        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: var(--bg-card);
            padding: 20px 22px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .feature-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: rgba(30, 58, 95, 0.12);
        }
        .feature-item i {
            font-size: 1.3rem;
            color: var(--secondary);
            margin-top: 2px;
            flex-shrink: 0;
        }
        .feature-item .feature-text h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 2px;
        }
        .feature-item .feature-text p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

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

        /* ===== 背景浅色区块 ===== */
        .bg-soft {
            background: #f1f5f9;
        }
        .bg-white {
            background: #fff;
        }

        /* ===== 图片圆角 ===== */
        .img-rounded {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }

        /* ===== focus 可访问性 ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== 平滑过渡 ===== */
        * {
            transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
        }

        /* ===== 移动端微调 ===== */
        @media (max-width: 480px) {
            .section-title {
                font-size: 1.5rem;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .card {
                padding: 24px 20px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #1e3a5f;
            --primary-light: #2d5a87;
            --primary-dark: #0f2440;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --accent-light: #fef3c7;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-alt: #f1f5f9;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --border-color: #e2e8f0;
            --radius-sm: 0.375rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s ease;
            --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        ul, ol { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
        .container-narrow { max-width: 820px; margin: 0 auto; padding: 0 1.5rem; }

        /* ===== 导航 ===== */
        .site-header {
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: 72px;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 6px rgba(0,0,0,0.04);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 1rem;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-text i { color: var(--accent); font-size: 1.2rem; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-links li a {
            padding: 0.55rem 1.1rem;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links li a:hover { color: var(--primary); background: var(--bg-alt); }
        .nav-links li a.active { color: var(--primary); background: var(--bg-alt); font-weight: 600; }
        .nav-links li a.nav-cta {
            background: var(--accent);
            color: #1e293b;
            font-weight: 600;
            padding: 0.55rem 1.4rem;
            border-radius: var(--radius-md);
            margin-left: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .nav-links li a.nav-cta:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--primary); cursor: pointer; padding: 0.4rem; }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 4rem 0 3rem;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(245,158,11,0.12) 0%, transparent 70%);
        }
        .article-hero .container-narrow { position: relative; z-index: 2; width: 100%; }
        .article-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem 1.5rem;
            margin-bottom: 1.2rem;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.75);
        }
        .article-hero .hero-meta .category-badge {
            background: var(--accent);
            color: #1e293b;
            padding: 0.2rem 0.9rem;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.8rem;
        }
        .article-hero .hero-meta i { margin-right: 0.3rem; }
        .article-hero h1 {
            font-size: clamp(1.8rem, 4.5vw, 3rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 0.8rem;
            text-shadow: 0 2px 20px rgba(0,0,0,0.15);
        }
        .article-hero .hero-desc {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.85);
            max-width: 680px;
            line-height: 1.7;
        }

        /* ===== 文章正文 ===== */
        .article-main { padding: 3rem 0 2.5rem; }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 2.5rem 3rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }
        .article-body h2 { font-size: 1.6rem; font-weight: 700; margin: 2rem 0 1rem; color: var(--primary); }
        .article-body h3 { font-size: 1.3rem; font-weight: 600; margin: 1.6rem 0 0.8rem; color: var(--primary); }
        .article-body p { margin-bottom: 1.2rem; }
        .article-body ul, .article-body ol { margin: 1rem 0 1.2rem 1.6rem; }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 0.4rem; }
        .article-body a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 2px; }
        .article-body a:hover { color: var(--accent-hover); }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            background: var(--accent-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body img { border-radius: var(--radius-md); margin: 1.5rem 0; box-shadow: var(--shadow-sm); }
        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 1.2rem 1.5rem;
            border-radius: var(--radius-md);
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 1.5rem 0;
        }
        .article-body code { font-family: 'JetBrains Mono', monospace; font-size: 0.9em; }
        .article-body p code { background: var(--bg-alt); padding: 0.2rem 0.5rem; border-radius: var(--radius-sm); }

        .article-not-found {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .article-not-found i { font-size: 3rem; color: var(--text-light); margin-bottom: 1rem; }
        .article-not-found h2 { font-size: 1.6rem; color: var(--text-primary); margin-bottom: 0.8rem; }
        .article-not-found p { color: var(--text-secondary); margin-bottom: 1.5rem; }
        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--primary);
            color: #fff;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-md);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-back-home:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== 文章底部信息 ===== */
        .article-footer-bar {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .article-tags .tag {
            background: var(--bg-alt);
            padding: 0.3rem 0.9rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--accent-light); color: var(--primary); }
        .article-share {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .article-share a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .article-share a:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }

        /* ===== 相关推荐 ===== */
        .related-section { padding: 2.5rem 0 3rem; }
        .related-section h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--primary);
            text-align: center;
            margin-bottom: 2rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .related-card .card-img .card-cat {
            position: absolute;
            top: 0.8rem;
            left: 0.8rem;
            background: var(--accent);
            color: #1e293b;
            padding: 0.2rem 0.7rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .related-card .card-body { padding: 1.2rem 1.3rem 1.4rem; }
        .related-card .card-body h3 { font-size: 1.05rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.4rem; line-height: 1.4; }
        .related-card .card-body h3 a:hover { color: var(--primary-light); }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }
        .related-card .card-body .card-date { font-size: 0.8rem; color: var(--text-light); margin-top: 0.6rem; display: block; }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 3rem 0;
            background: var(--bg-alt);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .faq-section h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--primary);
            text-align: center;
            margin-bottom: 2rem;
        }
        .faq-grid {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); }
        .faq-question {
            padding: 1.1rem 1.5rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 0.8rem;
            font-size: 1rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 1.5rem 1.1rem;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            padding: 4rem 0;
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 1.8rem;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--accent);
            color: #1e293b;
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .cta-section .btn-cta:hover { background: var(--accent-hover); transform: translateY(-3px); box-shadow: 0 12px 30px rgba(245,158,11,0.3); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 3.5rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo-text { color: #fff; font-size: 1.2rem; margin-bottom: 0.8rem; display: inline-flex; }
        .footer-brand .logo-text i { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: #94a3b8; margin-top: 0.8rem; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 1rem; }
        .footer-col ul li { margin-bottom: 0.5rem; }
        .footer-col ul li a { color: #94a3b8; font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.8rem;
            padding: 1.5rem 0;
            font-size: 0.85rem;
            color: #64748b;
        }
        .footer-bottom a { color: #94a3b8; }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-body { padding: 2rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-color); padding: 1rem 1.5rem; gap: 0.25rem; box-shadow: var(--shadow-md); }
            .nav-links.open { display: flex; }
            .nav-toggle { display: block; }
            .nav-links li a.nav-cta { margin-left: 0; margin-top: 0.3rem; justify-content: center; }
            .article-hero { padding: 2.5rem 0 2rem; min-height: 240px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-body { padding: 1.5rem; font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-footer-bar { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 520px) {
            .article-hero .hero-meta { font-size: 0.8rem; gap: 0.6rem; }
            .article-body { padding: 1.2rem; border-radius: var(--radius-md); }
            .container { padding: 0 1rem; }
            .logo-text { font-size: 1.1rem; }
        }

        /* ===== 工具类 ===== */
        .text-accent { color: var(--accent); }
        .bg-accent { background: var(--accent); }
        .rounded-custom { border-radius: var(--radius-md); }
        .shadow-card { box-shadow: var(--shadow-sm); }
        .transition-custom { transition: var(--transition); }