/* roulang page: index */
:root {
            --brand: #2843c4;
            --brand-dark: #1e2d80;
            --brand-deep: #0f1424;
            --accent: #f59e0b;
            --bg-light: #f8fafc;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius-lg: 1rem;
            --radius-md: 0.625rem;
            --shadow-card: 0 4px 20px rgba(15, 20, 36, 0.06);
            --shadow-hover: 0 12px 32px rgba(15, 20, 36, 0.12);
            --transition: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans), -apple-system, sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        .container-site {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (max-width: 640px) {
            .container-site {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .section-padding {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
        }

        .badge-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.8rem;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
            color: #fff;
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 0.8rem 1.8rem;
            border-radius: 999px;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(40, 67, 196, 0.25);
            transition: all var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(40, 67, 196, 0.35);
        }

        .btn-primary:focus,
        .btn-ghost:focus {
            outline: 3px solid rgba(40, 67, 196, 0.3);
            outline-offset: 2px;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(40, 67, 196, 0.3);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #fff;
            color: var(--brand);
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 0.8rem 1.8rem;
            border-radius: 999px;
            border: 1.5px solid var(--brand);
            cursor: pointer;
            transition: all var(--transition);
        }

        .btn-ghost:hover {
            background: var(--brand-50);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(40, 67, 196, 0.1);
        }

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

        .card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }

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

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--brand-deep);
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
        }

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

        .site-logo {
            font-size: 1.375rem;
            font-weight: 800;
            color: var(--brand-deep);
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .site-logo i {
            color: var(--brand);
            font-size: 1.25rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-links a {
            padding: 0.5rem 1rem;
            border-radius: 999px;
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-main);
            transition: all var(--transition);
            position: relative;
        }

        .nav-links a:hover {
            color: var(--brand);
            background: var(--brand-50);
        }

        .nav-links a.active {
            color: var(--brand);
            background: var(--brand-50);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 3px;
            background: var(--brand);
            border-radius: 999px;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .nav-cta .btn-nav {
            padding: 0.5rem 1.25rem;
            border-radius: 999px;
            background: var(--brand);
            color: #fff;
            font-size: 0.875rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }

        .nav-cta .btn-nav:hover {
            background: var(--brand-dark);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--brand-deep);
            cursor: pointer;
            padding: 0.25rem;
        }

        @media (max-width: 1024px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 12px 32px rgba(15, 20, 36, 0.08);
                padding: 1rem 1.5rem;
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }

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

            .nav-links a {
                width: 100%;
                padding: 0.75rem 1rem;
            }

            .nav-links a.active::after {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            .nav-cta .btn-nav {
                display: none;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, var(--brand-deep) 0%, var(--brand-dark) 50%, var(--brand) 100%);
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
            color: #fff;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.4;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, rgba(15, 20, 36, 0.9) 0%, rgba(30, 45, 128, 0.7) 60%, rgba(40, 67, 196, 0.3) 100%);
            z-index: 1;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 3rem;
            align-items: center;
            width: 100%;
            padding-top: 4rem;
            padding-bottom: 4rem;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 0.35rem 1rem;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.15;
            margin-top: 1rem;
            letter-spacing: -0.02em;
        }

        .hero-title .highlight {
            color: var(--accent);
        }

        .hero-desc {
            margin-top: 1.25rem;
            font-size: 1.125rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            max-width: 520px;
        }

        .hero-actions {
            margin-top: 2rem;
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .hero-actions .btn-primary {
            background: var(--accent);
            color: var(--brand-deep);
            box-shadow: 0 4px 18px rgba(245, 158, 11, 0.35);
        }

        .hero-actions .btn-primary:hover {
            background: #fbbf24;
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.45);
        }

        .hero-actions .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 0.8rem 1.8rem;
            border-radius: 999px;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all var(--transition);
        }

        .hero-actions .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 3rem;
            max-width: 500px;
        }

        .hero-stat {
            text-align: left;
        }

        .hero-stat .num {
            font-size: 1.75rem;
            font-weight: 800;
            color: #fff;
        }

        .hero-stat .label {
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 0.15rem;
        }

        @media (max-width: 1024px) {
            .hero-section::before {
                width: 70%;
            }

            .hero-title {
                font-size: 2.25rem;
            }
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: auto;
            }

            .hero-inner {
                grid-template-columns: 1fr;
                padding-top: 3rem;
                padding-bottom: 3rem;
            }

            .hero-section::before {
                width: 100%;
                opacity: 0.25;
            }

            .hero-section::after {
                background: linear-gradient(160deg, rgba(15, 20, 36, 0.92) 0%, rgba(30, 45, 128, 0.8) 60%, rgba(40, 67, 196, 0.5) 100%);
            }

            .hero-title {
                font-size: 1.875rem;
            }

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

        /* 分类卡片 */
        .category-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .category-card .thumb {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .category-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .category-card .thumb .overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 1.25rem 1.25rem 0.75rem;
            background: linear-gradient(0deg, rgba(15, 20, 36, 0.55) 0%, transparent 100%);
        }

        .category-card .body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .category-card .body h3 {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--brand-deep);
        }

        .category-card .body p {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
            line-height: 1.6;
            flex: 1;
        }

        .category-card .body .link-more {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            margin-top: 1rem;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--brand);
        }

        .category-card .body .link-more:hover {
            color: var(--brand-dark);
            gap: 0.7rem;
        }

        /* 功能特点 */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

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

        @media (max-width: 640px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }

        .feature-item {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: all var(--transition);
        }

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

        .feature-item .icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 58px;
            height: 58px;
            border-radius: 16px;
            font-size: 1.4rem;
            background: var(--brand-50);
            color: var(--brand);
            margin-bottom: 1rem;
        }

        .feature-item h4 {
            font-size: 1.0625rem;
            font-weight: 700;
            color: var(--brand-deep);
        }

        .feature-item p {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
            line-height: 1.6;
        }

        /* 资讯卡片 */
        .post-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
        }

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

        .post-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 1.5rem;
            transition: all var(--transition);
            display: block;
        }

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

        .post-card .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            align-items: center;
            margin-bottom: 0.75rem;
        }

        .post-card .meta .tag {
            background: var(--brand-50);
            color: var(--brand);
            padding: 0.2rem 0.6rem;
            border-radius: 999px;
            font-size: 0.6875rem;
            font-weight: 600;
        }

        .post-card .meta .date {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .post-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--brand-deep);
            line-height: 1.5;
        }

        .post-card p {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
            line-height: 1.6;
        }

        .post-card .link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--brand);
            margin-top: 1rem;
        }

        /* 流程 */
        .process-section {
            background: var(--brand-deep);
            color: #fff;
        }

        .process-section .section-title {
            color: #fff;
        }

        .process-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 3rem;
        }

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

        @media (max-width: 640px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        .process-item {
            text-align: center;
            padding: 2rem 1.5rem;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            position: relative;
            transition: background 0.3s ease;
        }

        .process-item:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .process-item .step-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent);
            opacity: 0.8;
            line-height: 1;
        }

        .process-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-top: 0.75rem;
        }

        .process-item p {
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 0.35rem;
            line-height: 1.5;
        }

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

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

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

        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 0.9375rem;
            color: var(--brand-deep);
            padding: 1.25rem 1.5rem;
            cursor: pointer;
            list-style: none;
        }

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

        .faq-item summary::after {
            content: '+';
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--brand);
            transition: all var(--transition);
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item .answer {
            padding: 0 1.5rem 1.25rem;
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 60%, var(--brand-deep) 100%);
            color: #fff;
            text-align: center;
            padding: 4rem 1.5rem;
            border-radius: var(--radius-lg);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 60%);
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
        }

        .cta-section p {
            max-width: 560px;
            margin: 1rem auto 0;
            color: rgba(255, 255, 255, 0.8);
        }

        .cta-section .btn-primary {
            background: #fff;
            color: var(--brand);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            margin-top: 2rem;
        }

        .cta-section .btn-primary:hover {
            background: var(--brand-50);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }

        /* 页脚 */
        .site-footer {
            background: var(--brand-deep);
            color: rgba(255, 255, 255, 0.7);
            padding-top: 4rem;
            padding-bottom: 2rem;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 3rem;
        }

        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        .site-footer .footer-brand {
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .site-footer .footer-desc {
            font-size: 0.875rem;
            margin-top: 1rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .site-footer h5 {
            font-size: 0.875rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 1rem;
        }

        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .site-footer .footer-links a {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 3rem;
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.5);
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* 关于板块 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

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

        .about-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }

        .about-image .floating-card {
            position: absolute;
            bottom: 1.5rem;
            left: 1.5rem;
            right: 1.5rem;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 1rem 1.25rem;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .about-image .floating-card i {
            font-size: 1.5rem;
            color: var(--brand);
        }

        .about-image .floating-card .text {
            font-size: 0.8125rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .about-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--brand-deep);
            margin-bottom: 1rem;
        }

        .about-content p {
            font-size: 0.9375rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 1rem;
        }

        .about-content ul {
            margin-top: 1rem;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .about-content ul li {
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            font-size: 0.875rem;
            color: var(--text-main);
        }

        .about-content ul li i {
            color: var(--brand);
            margin-top: 0.15rem;
        }

        /* 焦点可见性 */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(40, 67, 196, 0.4);
            outline-offset: 2px;
        }

        /* 背景板块 */
        .blueprint-section {
            background: linear-gradient(180deg, var(--bg-light) 0%, #eef2ff 100%);
            position: relative;
            overflow: hidden;
        }

        .blueprint-section::before {
            content: '';
            position: absolute;
            top: -5%;
            left: -5%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(40, 67, 196, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

/* roulang page: category1 */
:root {
            --primary: #1e35d8;
            --primary-dark: #1e2b89;
            --accent: #f59e0b;
            --bg-body: #f8fafc;
            --bg-section: #f1f5f9;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --radius: 16px;
            --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, .08);
            --shadow-lg: 0 12px 32px rgba(15, 23, 42, .12);
            --spacing-section: 5rem;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.65;
            font-size: 16px;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        .container-site {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .container-site-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, .8);
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(15, 23, 42, .08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 1rem;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: .6rem;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--brand-900, #1e2b89);
            letter-spacing: -.01em;
        }
        .site-logo i {
            font-size: 1.4rem;
            color: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: .25rem;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: .5rem .85rem;
            border-radius: 8px;
            font-size: .925rem;
            font-weight: 500;
            color: #475569;
            transition: all .2s ease;
        }
        .nav-links a:hover {
            background: #f1f5f9;
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(30, 53, 216, .3);
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: .5rem;
        }
        .header-cta .btn-header {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: var(--primary);
            color: #fff;
            padding: .5rem 1.1rem;
            border-radius: 8px;
            font-size: .875rem;
            font-weight: 600;
            transition: all .2s ease;
        }
        .header-cta .btn-header:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(30, 53, 216, .3);
        }
        .header-cta .btn-header:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: #334155;
        }
        .mobile-toggle:hover {
            background: #f1f5f9;
        }
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }
            .mobile-toggle {
                display: inline-flex;
            }
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            padding: .75rem 1.5rem 1rem;
        }
        .mobile-menu a {
            display: block;
            padding: .65rem .5rem;
            border-radius: 8px;
            font-size: .95rem;
            font-weight: 500;
            color: #334155;
            transition: background .2s;
        }
        .mobile-menu a.active {
            background: var(--primary);
            color: #fff;
        }
        .mobile-menu a:hover {
            background: #f1f5f9;
        }
        .page-hero {
            position: relative;
            padding: 8.5rem 0 4.5rem;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            isolation: isolate;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .88) 20%, rgba(30, 53, 216, .72) 60%, rgba(245, 158, 11, .35));
            z-index: -1;
        }
        .page-hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.2fr .8fr;
            gap: 3rem;
            align-items: center;
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: .8rem;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }
        .page-hero .breadcrumb a {
            color: rgba(255, 255, 255, .8);
            transition: color .2s;
        }
        .page-hero .breadcrumb a:hover {
            color: #fff;
        }
        .page-hero h1 {
            font-size: 2.75rem;
            line-height: 1.15;
            color: #fff;
            font-weight: 800;
            margin: 0 0 1rem;
            letter-spacing: -.02em;
            text-shadow: 0 2px 20px rgba(0, 0, 0, .25);
        }
        .page-hero .hero-subtitle {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, .88);
            max-width: 36rem;
            margin-bottom: 1.75rem;
            line-height: 1.7;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: rgba(245, 158, 11, .2);
            border: 1px solid rgba(245, 158, 11, .35);
            color: #fcd34d;
            padding: .3rem .75rem;
            border-radius: 999px;
            font-size: .75rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: .75rem;
        }
        .btn-primary,
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            padding: .7rem 1.5rem;
            border-radius: 10px;
            font-size: .92rem;
            font-weight: 600;
            transition: all .25s ease;
            border: none;
        }
        .btn-primary {
            background: var(--accent);
            color: #1e293b;
            box-shadow: 0 4px 14px rgba(245, 158, 11, .4);
        }
        .btn-primary:hover {
            background: #fbbf24;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 158, 11, .45);
        }
        .btn-primary:focus-visible,
        .btn-outline:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .5);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .12);
            border-color: rgba(255, 255, 255, .8);
        }
        .hero-visual {
            position: relative;
        }
        .hero-card {
            background: rgba(255, 255, 255, .95);
            border-radius: 20px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, .2);
            padding: 1.6rem;
            backdrop-filter: blur(8px);
        }
        .hero-card .hc-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1rem;
        }
        .hero-card .hc-title {
            font-weight: 700;
            font-size: .9rem;
            color: var(--text-main);
        }
        .hero-card .hc-status {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            background: #dcfce7;
            color: #166534;
            font-size: .72rem;
            font-weight: 600;
            padding: .2rem .6rem;
            border-radius: 999px;
        }
        .hero-card .hc-status i {
            font-size: .65rem;
        }
        .hero-card .hc-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: .75rem;
        }
        .hero-card .hc-item {
            background: #f8fafc;
            border-radius: 12px;
            padding: .9rem;
            border: 1px solid var(--border-color);
            transition: all .2s;
        }
        .hero-card .hc-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .hero-card .hc-item i {
            color: var(--primary);
            font-size: 1rem;
            margin-bottom: .35rem;
        }
        .hero-card .hc-item p {
            font-size: .78rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.4;
        }
        @media (max-width: 1024px) {
            .page-hero-inner {
                grid-template-columns: 1fr;
            }
            .hero-visual {
                display: none;
            }
        }
        @media (max-width: 640px) {
            .page-hero {
                padding-top: 7rem;
                padding-bottom: 3rem;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero .hero-subtitle {
                font-size: .95rem;
            }
        }
        .section-block {
            padding: 5rem 0;
        }
        .section-block-alt {
            background: #fff;
            padding: 5rem 0;
        }
        .section-head {
            text-align: center;
            max-width: 42rem;
            margin: 0 auto 3rem;
        }
        .section-head .section-tag {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: #eef2ff;
            color: var(--primary);
            padding: .25rem .75rem;
            border-radius: 999px;
            font-size: .75rem;
            font-weight: 600;
            margin-bottom: .75rem;
        }
        .section-head h2 {
            font-size: 1.9rem;
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 .75rem;
            color: #0f172a;
            letter-spacing: -.01em;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: .95rem;
            line-height: 1.7;
            margin: 0;
        }
        .channel-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        .channel-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 1.5rem;
            transition: all .25s ease;
            position: relative;
            overflow: hidden;
        }
        .channel-card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity .25s;
        }
        .channel-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: #c7d2fe;
        }
        .channel-card:hover::after {
            opacity: 1;
        }
        .channel-card .cc-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: #eef2ff;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }
        .channel-card h3 {
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 .5rem;
            color: #0f172a;
        }
        .channel-card p {
            font-size: .84rem;
            color: var(--text-muted);
            line-height: 1.55;
            margin: 0 0 1rem;
        }
        .channel-card .cc-tag {
            display: inline-flex;
            background: #f0f9ff;
            color: #0369a1;
            border-radius: 6px;
            padding: .2rem .5rem;
            font-size: .7rem;
            font-weight: 500;
        }
        @media (max-width: 1024px) {
            .channel-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .channel-grid {
                grid-template-columns: 1fr;
            }
        }
        .flow-section {
            background: #0f172a;
            position: relative;
            overflow: hidden;
        }
        .flow-section::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(30, 53, 216, .3), transparent);
            border-radius: 50%;
        }
        .flow-section .section-head h2 {
            color: #fff;
        }
        .flow-section .section-head p {
            color: rgba(255, 255, 255, .6);
        }
        .flow-section .section-head .section-tag {
            background: rgba(255, 255, 255, .12);
            color: #93c5fd;
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            position: relative;
        }
        .flow-item {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius);
            padding: 1.5rem;
            transition: all .3s ease;
            backdrop-filter: blur(4px);
        }
        .flow-item:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(96, 140, 250, .4);
            transform: translateY(-4px);
        }
        .flow-item .step-ico {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(30, 53, 216, .35);
            color: #93c5fd;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            margin-bottom: 1rem;
        }
        .flow-item .step-num {
            font-size: .7rem;
            color: rgba(255, 255, 255, .5);
            font-weight: 600;
            letter-spacing: .08em;
            text-transform: uppercase;
            margin-bottom: .3rem;
            display: block;
        }
        .flow-item h3 {
            color: #fff;
            font-size: .95rem;
            font-weight: 600;
            margin: 0 0 .5rem;
        }
        .flow-item p {
            color: rgba(255, 255, 255, .65);
            font-size: .8rem;
            line-height: 1.55;
            margin: 0;
        }
        @media (max-width: 1024px) {
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .flow-grid {
                grid-template-columns: 1fr;
            }
        }
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        .safety-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 1.4rem;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: all .25s;
        }
        .safety-card:hover {
            border-color: #fda4af;
            box-shadow: var(--shadow-md);
        }
        .safety-card .sc-ico {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #fef2f2;
            color: #dc2626;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin: 0 auto 1rem;
        }
        .safety-card h3 {
            font-size: .92rem;
            font-weight: 600;
            margin: 0 0 .5rem;
            color: #0f172a;
        }
        .safety-card p {
            font-size: .8rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin: 0;
        }
        @media (max-width: 1024px) {
            .safety-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .safety-grid {
                grid-template-columns: 1fr;
            }
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .scenario-card {
            background: #fff;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all .3s ease;
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .scenario-card .sc-img {
            height: 150px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .scenario-card .sc-img .sc-badge {
            position: absolute;
            top: .8rem;
            left: .8rem;
            background: rgba(255, 255, 255, .92);
            color: #0f172a;
            font-size: .72rem;
            font-weight: 600;
            padding: .25rem .6rem;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }
        .scenario-card .sc-body {
            padding: 1.4rem;
        }
        .scenario-card .sc-body h3 {
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 .4rem;
            color: #0f172a;
        }
        .scenario-card .sc-body p {
            font-size: .85rem;
            color: var(--text-muted);
            line-height: 1.55;
            margin: 0 0 .75rem;
        }
        .scenario-card .sc-body .sc-link {
            font-size: .82rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            transition: all .2s;
        }
        .scenario-card .sc-body .sc-link:hover {
            gap: .55rem;
        }
        @media (max-width: 768px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
        }
        .faq-wrap {
            max-width: 48rem;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: .85rem;
            overflow: hidden;
            transition: border-color .2s, box-shadow .2s;
        }
        .faq-item.open {
            border-color: #c7d2fe;
            box-shadow: var(--shadow-sm);
        }
        .faq-btn {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            background: transparent;
            border: none;
            padding: 1.1rem 1.3rem;
            text-align: left;
            font-size: .95rem;
            font-weight: 600;
            color: #0f172a;
            transition: color .2s;
        }
        .faq-btn:hover {
            color: var(--primary);
        }
        .faq-btn .fa-chevron-down {
            flex-shrink: 0;
            color: var(--text-muted);
            transition: transform .3s;
        }
        .faq-item.open .faq-btn .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }
        .faq-item.open .faq-content {
            max-height: 500px;
        }
        .faq-content p {
            padding: 0 1.3rem 1.15rem;
            margin: 0;
            font-size: .87rem;
            color: var(--text-muted);
            line-height: 1.65;
        }
        .cta-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            isolation: isolate;
            padding: 4.5rem 0;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 23, 42, .92), rgba(30, 53, 216, .75));
            z-index: -1;
        }
        .cta-inner {
            text-align: center;
            max-width: 40rem;
            margin: 0 auto;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0 0 .75rem;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, .75);
            font-size: .95rem;
            margin-bottom: 1.75rem;
            line-height: 1.6;
        }
        .cta-inner .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: var(--accent);
            color: #1e293b;
            font-size: 1rem;
            font-weight: 700;
            padding: .85rem 2rem;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(245, 158, 11, .4);
            transition: all .25s ease;
        }
        .cta-inner .btn-cta:hover {
            background: #fbbf24;
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(245, 158, 11, .5);
        }
        .cta-inner .btn-cta:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 3px;
        }
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 3.5rem 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 2rem;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: .6rem;
        }
        .site-footer .footer-brand i {
            color: var(--accent);
        }
        .site-footer .footer-desc {
            font-size: .85rem;
            line-height: 1.6;
            color: #94a3b8;
            max-width: 22rem;
        }
        .site-footer h5 {
            color: #e2e8f0;
            font-size: .85rem;
            font-weight: 600;
            margin: 0 0 .75rem;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: .4rem;
        }
        .site-footer .footer-links a {
            color: #94a3b8;
            font-size: .82rem;
            transition: color .2s;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid #1e293b;
            padding: 1.2rem 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: .5rem;
            font-size: .78rem;
            color: #64748b;
        }
        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 42px;
            height: 42px;
            background: var(--primary);
            color: #fff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            box-shadow: var(--shadow-lg);
            border: none;
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
            z-index: 50;
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }
        .back-to-top:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        @media (max-width: 640px) {
            .section-block {
                padding: 3rem 0;
            }
            .section-block-alt {
                padding: 3rem 0;
            }
            .container-site {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

/* roulang page: article */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --accent: #f59e0b;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --bg: #f1f5f9;
    --card: #ffffff;
    --text: #1e293b;
    --text-weak: #64748b;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.1);
    --transition: all 0.3s ease;
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    padding-top: 72px;
    -webkit-font-smoothing: antialiased;
}
a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
button, input {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
    cursor: pointer;
}
.container-site {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.7);
    transition: var(--transition);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.5px;
}
.logo i {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), #60a5fa);
    color: #fff;
    border-radius: 12px;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-links a {
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-weak);
}
.nav-links a:hover {
    color: var(--primary);
    background: var(--primary-light);
}
.nav-links a.active {
    color: #fff;
    background: var(--primary);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}
.header-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--primary), #3b82f6);
    color: #fff;
    font-weight: 600;
    font-size: 0.92rem;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}
.header-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}
.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--bg);
    color: var(--text);
    font-size: 1.1rem;
    align-items: center;
    justify-content: center;
}
.article-hero {
    position: relative;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: 100px 0 80px;
}
.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(30, 58, 138, 0.78));
}
.article-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 860px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 22px;
}
.breadcrumb a {
    color: rgba(255, 255, 255, 0.85);
}
.breadcrumb a:hover {
    color: #fff;
}
.breadcrumb-sep {
    font-size: 0.7rem;
    opacity: 0.6;
}
.hero-badge {
    display: inline-block;
    padding: 5px 16px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.9);
    color: #fff;
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}
.article-hero h1 {
    color: #fff;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 18px;
    letter-spacing: -0.5px;
}
.hero-desc {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.02rem;
    line-height: 1.8;
    margin-bottom: 28px;
    max-width: 720px;
}
.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.9rem;
}
.hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.hero-meta i {
    color: #60a5fa;
}
.article-body-section {
    padding: 60px 0 50px;
}
.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 30px;
    align-items: start;
}
.article-main .article-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px 42px;
    border: 1px solid rgba(226, 232, 240, 0.5);
}
.article-content {
    font-size: 1.04rem;
    line-height: 1.9;
    color: var(--text);
}
.article-content p {
    margin-bottom: 1.6em;
}
.article-content h2 {
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--dark);
    margin: 2em 0 0.8em;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-light);
}
.article-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
    margin: 1.8em 0 0.6em;
}
.article-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    margin: 1.4em 0 0.5em;
}
.article-content ul,
.article-content ol {
    margin: 1em 0 1.8em;
    padding-left: 1.6em;
}
.article-content ul li,
.article-content ol li {
    margin-bottom: 0.7em;
}
.article-content ul {
    list-style: disc;
}
.article-content ol {
    list-style: decimal;
}
.article-content img {
    border-radius: 12px;
    margin: 1.8em 0;
    box-shadow: var(--shadow);
}
.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: var(--primary-light);
    padding: 1.2em 1.6em;
    margin: 1.8em 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text);
    font-style: italic;
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 0.95em;
}
.article-content table th,
.article-content table td {
    border: 1px solid var(--border);
    padding: 10px 14px;
    text-align: left;
}
.article-content table th {
    background: var(--bg);
    font-weight: 600;
}
.article-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 36px;
    padding-top: 26px;
    border-top: 1px solid var(--border);
}
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 500;
}
.article-share {
    display: flex;
    gap: 10px;
}
.article-share a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--bg);
    color: var(--text-weak);
    font-size: 0.95rem;
    transition: var(--transition);
}
.article-share a:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}
.not-found-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 60px 40px;
    text-align: center;
}
.not-found-card i {
    font-size: 2.8rem;
    color: #94a3b8;
    margin-bottom: 18px;
}
.not-found-card h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
}
.not-found-card p {
    color: var(--text-weak);
    margin-bottom: 24px;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}
.sidebar-widget {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid rgba(226, 232, 240, 0.5);
}
.sidebar-widget h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark);
    padding-bottom: 14px;
    border-bottom: 2px solid var(--primary-light);
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sidebar-widget h3 i {
    color: var(--primary);
    font-size: 0.9rem;
}
.sidebar-posts {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.sidebar-post {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 10px;
    background: var(--bg);
    transition: var(--transition);
    border: 1px solid transparent;
}
.sidebar-post:hover {
    background: var(--primary-light);
    border-color: rgba(37, 99, 235, 0.15);
}
.post-title {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    line-height: 1.5;
}
.sidebar-post:hover .post-title {
    color: var(--primary);
}
.post-date {
    font-size: 0.78rem;
    color: var(--text-weak);
    white-space: nowrap;
}
.sidebar-cats {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.sidebar-cats a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 16px;
    border-radius: 10px;
    background: var(--bg);
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid transparent;
}
.sidebar-cats a:hover {
    background: var(--primary);
    color: #fff;
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}
.sidebar-guarantee {
    background: linear-gradient(135deg, var(--dark), #1e3a5f);
    border-radius: var(--radius);
    padding: 28px 22px;
    text-align: center;
    color: #fff;
    box-shadow: var(--shadow-lg);
}
.sidebar-guarantee i {
    font-size: 2rem;
    color: #60a5fa;
    margin-bottom: 12px;
}
.sidebar-guarantee h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.sidebar-guarantee p {
    font-size: 0.85rem;
    opacity: 0.85;
    line-height: 1.7;
}
.empty-tips {
    color: var(--text-weak);
    font-size: 0.92rem;
    padding: 20px 0;
    text-align: center;
}
.related-section {
    padding: 50px 0 40px;
}
.section-header {
    text-align: center;
    margin-bottom: 40px;
}
.section-header h2 {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 6px;
    letter-spacing: -0.5px;
}
.section-header p {
    color: var(--text-weak);
    font-size: 1rem;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid rgba(226, 232, 240, 0.5);
    transition: var(--transition);
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.related-cover {
    position: relative;
    height: 180px;
    overflow: hidden;
}
.related-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.related-card:hover .related-cover img {
    transform: scale(1.05);
}
.related-cat {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: rgba(37, 99, 235, 0.9);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 600;
    border-radius: 999px;
}
.related-body {
    padding: 20px 22px 24px;
}
.related-body h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.5;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-body p {
    font-size: 0.88rem;
    color: var(--text-weak);
    line-height: 1.6;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-date {
    font-size: 0.82rem;
    color: var(--text-weak);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.service-section {
    padding: 50px 0;
    background: linear-gradient(180deg, var(--bg), #fff);
}
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 20px;
}
.service-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 36px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    border: 1px solid rgba(226, 232, 240, 0.5);
    transition: var(--transition);
}
.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(37, 99, 235, 0.2);
}
.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 18px;
    font-size: 1.5rem;
    transition: var(--transition);
}
.service-card:hover .service-icon {
    background: var(--primary);
    color: #fff;
    transform: scale(1.05);
}
.service-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--dark);
}
.service-card p {
    font-size: 0.92rem;
    color: var(--text-weak);
    line-height: 1.7;
}
.faq-section {
    padding: 50px 0;
}
.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.faq-item {
    background: var(--card);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    border: 1px solid rgba(226, 232, 240, 0.5);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item.active {
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.08);
}
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    background: transparent;
    transition: var(--transition);
    cursor: pointer;
}
.faq-question:hover {
    color: var(--primary);
}
.faq-question i {
    color: var(--text-weak);
    font-size: 0.85rem;
    transition: transform 0.3s ease;
}
.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--primary);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}
.faq-answer p {
    padding: 0 24px 20px;
    font-size: 0.95rem;
    color: var(--text-weak);
    line-height: 1.8;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}
.cta-section {
    padding: 60px 0;
    background: url('/assets/images/backpic/back-2.png') center/cover fixed no-repeat;
    position: relative;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(37, 99, 235, 0.85));
}
.cta-inner {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}
.cta-inner h2 {
    color: #fff;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -0.5px;
}
.cta-inner p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.05rem;
    margin-bottom: 30px;
}
.cta-btns {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}
.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 999px;
    background: #fff;
    color: var(--primary);
    font-weight: 700;
    box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}
.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.3);
}
.btn-cta-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 999px;
    border: 2px solid rgba(255, 255, 255, 0.7);
    color: #fff;
    font-weight: 600;
    transition: var(--transition);
}
.btn-cta-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    border-color: #fff;
}
.site-footer {
    background: var(--dark);
    color: #94a3b8;
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.15);
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
}
.footer-brand i {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    border-radius: 10px;
    font-size: 0.9rem;
}
.footer-desc {
    font-size: 0.9rem;
    line-height: 1.8;
    max-width: 320px;
}
.site-footer h5 {
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 18px;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-links a {
    color: #94a3b8;
    font-size: 0.9rem;
    transition: var(--transition);
}
.footer-links a:hover {
    color: #fff;
    padding-left: 4px;
}
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding: 22px 0;
    font-size: 0.85rem;
}
.footer-bottom i {
    color: var(--accent);
}
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
    }
    .article-sidebar {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .sidebar-widget {
        margin-bottom: 0;
    }
}
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    .nav-links {
        position: fixed;
        top: 72px;
        left: 16px;
        right: 16px;
        background: #fff;
        border-radius: 16px;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        box-shadow: var(--shadow-lg);
        border: 1px solid var(--border);
        transform: translateY(-160%);
        transition: transform 0.35s ease;
        z-index: 999;
    }
    .nav-links.open {
        transform: translateY(0);
    }
    .nav-links a {
        padding: 12px 18px;
        border-radius: 12px;
        font-size: 1rem;
    }
    .header-btn {
        display: none;
    }
    .related-grid,
    .service-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .article-main .article-card {
        padding: 30px 24px;
    }
    .article-hero {
        padding: 70px 0 60px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}
@media (max-width: 520px) {
    .article-sidebar {
        grid-template-columns: 1fr;
    }
    .hero-meta {
        flex-direction: column;
        gap: 10px;
    }
    .article-footer {
        flex-direction: column;
        align-items: flex-start;
    }
    .cta-inner h2 {
        font-size: 1.5rem;
    }
    .site-header {
        padding: 0 10px;
    }
}

/* roulang page: category2 */
:root {
  --primary: #0f1f3c;
  --primaryLight: #1a2a4a;
  --accent: #c9a96e;
  --accentHover: #b89554;
  --bgLight: #f7f8fa;
  --textMain: #1e2a3a;
  --textSub: #5a6b7b;
  --borderSoft: #e5e9ef;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(15,31,60,0.08);
  --shadowHover: 0 18px 40px rgba(15,31,60,0.15);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--bgLight); color: var(--textMain); line-height: 1.7; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }
.container-site { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.hero-bg {
  background-image: linear-gradient(135deg, rgba(15,31,60,0.92), rgba(26,42,74,0.78)), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.banner-bg {
  background-image: linear-gradient(135deg, rgba(15,31,60,0.9), rgba(26,42,74,0.72)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
}
.header-area {
  background: rgba(15, 31, 60, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}
.header-logo i { color: var(--accent); font-size: 1.5rem; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  padding: 8px 16px;
  border-radius: 10px;
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.25s ease;
}
.nav-links a:hover { background: rgba(255,255,255,0.1); color: #fff; }
.nav-links a.active { background: var(--accent); color: var(--primary); font-weight: 600; }
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--primary);
  padding: 10px 22px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}
.header-cta:hover { background: #d9bc83; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(201,169,110,0.4); }
.nav-toggle { display: none; background: transparent; border: 1px solid rgba(255,255,255,0.3); border-radius: 8px; padding: 8px 10px; color: #fff; font-size: 1.2rem; cursor: pointer; }
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    padding: 16px 24px;
    gap: 8px;
    box-shadow: 0 20px 30px rgba(0,0,0,0.2);
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; text-align: center; }
  .header-cta { display: none; }
}
.hero-section {
  padding: 120px 0 110px;
  color: #fff;
  position: relative;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 8px 20px;
  border-radius: 40px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 28px;
  backdrop-filter: blur(4px);
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero-title span { color: var(--accent); }
.hero-desc {
  font-size: 1.1rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  margin-bottom: 36px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: var(--primary);
  font-weight: 600;
  padding: 14px 30px;
  border-radius: 12px;
  transition: all 0.3s ease;
  border: 2px solid var(--accent);
}
.btn-primary:hover { background: #d9bc83; border-color: #d9bc83; transform: translateY(-3px); box-shadow: 0 12px 30px rgba(201,169,110,0.4); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  color: #fff;
  font-weight: 600;
  padding: 14px 30px;
  border-radius: 12px;
  border: 2px solid rgba(255,255,255,0.5);
  transition: all 0.3s ease;
}
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: translateY(-3px); }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
  max-width: 760px;
}
.hero-stat {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 16px;
  padding: 18px 20px;
  backdrop-filter: blur(4px);
  text-align: center;
}
.hero-stat b { display: block; font-size: 1.8rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
.hero-stat span { font-size: 0.85rem; color: rgba(255,255,255,0.8); }
@media (max-width: 768px) {
  .hero-section { padding: 70px 0 60px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}
.section-pad { padding: 90px 0; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-title { font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; color: var(--primary); line-height: 1.3; }
.section-desc { color: var(--textSub); font-size: 1rem; max-width: 600px; margin: 14px auto 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 34px 28px;
  border: 1px solid var(--borderSoft);
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}
.stat-card:hover { transform: translateY(-6px); box-shadow: var(--shadowHover); border-color: rgba(201,169,110,0.4); }
.stat-card i { font-size: 2rem; color: var(--accent); margin-bottom: 14px; }
.stat-card b { display: block; font-size: 2rem; font-weight: 800; color: var(--primary); line-height: 1.3; }
.stat-card span { color: var(--textSub); font-size: 0.9rem; }
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr; }
}
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.service-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--borderSoft);
  box-shadow: var(--shadow);
  transition: all 0.35s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadowHover); }
.service-card-img { height: 190px; overflow: hidden; position: relative; }
.service-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.service-card:hover .service-card-img img { transform: scale(1.06); }
.service-card-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.service-card-body h3 { font-size: 1.25rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.service-card-body p { color: var(--textSub); font-size: 0.95rem; line-height: 1.7; flex: 1; }
.service-card-tag { display: inline-flex; align-items: center; gap: 6px; background: rgba(201,169,110,0.15); color: #8a6a30; font-size: 0.8rem; font-weight: 600; padding: 4px 12px; border-radius: 20px; margin-top: 16px; align-self: flex-start; }
.badge-accent { display: inline-flex; align-items: center; gap: 6px; background: linear-gradient(135deg, var(--accent), #d9bc83); color: var(--primary); font-weight: 700; padding: 6px 16px; border-radius: 30px; font-size: 0.8rem; letter-spacing: 0.5px; }
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .card-grid { grid-template-columns: 1fr; }
}
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; }
.step-card { text-align: center; padding: 34px 20px; background: #fff; border-radius: var(--radius); border: 1px solid var(--borderSoft); box-shadow: var(--shadow); position: relative; transition: all 0.3s ease; }
.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadowHover); }
.step-number {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), #2a3d6e);
  color: var(--accent);
  font-size: 1.4rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 8px 20px rgba(15,31,60,0.25);
}
.step-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.step-card p { font-size: 0.9rem; color: var(--textSub); 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; }
}
.feature-section { background: #fff; border-top: 1px solid var(--borderSoft); border-bottom: 1px solid var(--borderSoft); }
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.feature-img { border-radius: 20px; overflow: hidden; box-shadow: var(--shadow); position: relative; }
.feature-img img { width: 100%; height: 340px; object-fit: cover; }
.feature-content h3 { font-size: 1.5rem; font-weight: 800; color: var(--primary); margin-bottom: 16px; }
.feature-content p { color: var(--textSub); margin-bottom: 12px; line-height: 1.8; }
.feature-list { list-style: none; margin-top: 20px; }
.feature-list li { display: flex; align-items: flex-start; gap: 12px; padding: 8px 0; color: var(--textMain); }
.feature-list li i { color: var(--accent); margin-top: 5px; font-size: 0.9rem; }
@media (max-width: 920px) {
  .feature-grid { grid-template-columns: 1fr; gap: 36px; }
  .feature-img img { height: 260px; }
}
.source-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.source-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: #fff;
  border-radius: 14px;
  padding: 24px;
  border: 1px solid var(--borderSoft);
  transition: all 0.3s ease;
}
.source-item:hover { box-shadow: var(--shadowHover); transform: translateX(4px); border-color: rgba(201,169,110,0.5); }
.source-item i { font-size: 1.5rem; color: var(--accent); margin-top: 4px; flex-shrink: 0; }
.source-item h4 { font-size: 1.05rem; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.source-item p { font-size: 0.9rem; color: var(--textSub); }
@media (max-width: 768px) {
  .source-grid { grid-template-columns: 1fr; }
}
.faq-item {
  background: #fff;
  border: 1px solid var(--borderSoft);
  border-radius: 14px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: all 0.3s ease;
}
.faq-item.open { box-shadow: var(--shadow); border-color: rgba(201,169,110,0.5); }
.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: 22px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--primary);
  transition: color 0.3s;
}
.faq-question:hover { color: var(--accentHover); }
.faq-question i { transition: transform 0.3s ease; color: var(--accent); }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner { padding: 0 28px 24px; color: var(--textSub); line-height: 1.8; font-size: 0.95rem; }
.cta-section {
  background-image: linear-gradient(135deg, rgba(15,31,60,0.92), rgba(26,42,74,0.85)), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  padding: 80px 0;
  color: #fff;
  text-align: center;
}
.cta-title { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; margin-bottom: 14px; }
.cta-desc { color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 32px; }
.site-footer { background: var(--primary); color: rgba(255,255,255,0.75); padding: 70px 0 0; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand { display: flex; align-items: center; gap: 12px; font-size: 1.4rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-brand i { color: var(--accent); }
.footer-desc { font-size: 0.9rem; line-height: 1.8; max-width: 320px; }
.site-footer h5 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: rgba(255,255,255,0.65); font-size: 0.9rem; transition: all 0.3s; }
.footer-links a:hover { color: var(--accent); padding-left: 6px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 24px 0 26px; font-size: 0.85rem; color: rgba(255,255,255,0.5); flex-wrap: wrap; gap: 10px; }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
.breadcrumb { display: inline-flex; align-items: center; gap: 10px; background: rgba(255,255,255,0.12); padding: 8px 18px; border-radius: 40px; font-size: 0.85rem; color: rgba(255,255,255,0.8); margin-bottom: 22px; }
.breadcrumb a { color: var(--accent); }
.breadcrumb a:hover { text-decoration: underline; }
::selection { background: var(--accent); color: var(--primary); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* roulang page: category3 */
:root {
            --primary: #1e3a6e;
            --primary-light: #3568dc;
            --primary-dark: #0f2140;
            --accent: #f0a500;
            --accent-dark: #d97706;
            --bg: #f4f6fb;
            --bg-white: #ffffff;
            --bg-soft: #f8fafc;
            --text: #0f172a;
            --text-weak: #5b6b85;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 3px rgba(15, 33, 64, .05);
            --shadow-md: 0 8px 24px rgba(15, 33, 64, .08);
            --shadow-lg: 0 16px 48px rgba(15, 33, 64, .12);
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s, box-shadow .25s, transform .25s, background .25s;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* 顶部导航 */
        .site-header {
            position: relative;
            background: linear-gradient(135deg, #0f2140 0%, #1e3a6e 60%, #24447e 100%);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            overflow: hidden;
        }

        .site-header::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240, 165, 0, .12) 0%, transparent 70%);
            pointer-events: none;
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            padding: 18px 0;
            position: relative;
            z-index: 5;
        }

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

        .brand-logo i {
            font-size: 24px;
            color: var(--accent);
            background: rgba(240, 165, 0, .15);
            border: 1px solid rgba(240, 165, 0, .3);
            border-radius: 12px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .brand-logo span {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            background: linear-gradient(90deg, #fff 0%, #e2e8f0 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, .75);
            padding: 8px 18px;
            border-radius: 999px;
            transition: all .3s;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }

        .nav-links a.active {
            color: #fff;
            background: rgba(240, 165, 0, .2);
            box-shadow: 0 0 0 1px rgba(240, 165, 0, .3);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .15);
            border-radius: 999px;
            padding: 4px 6px 4px 16px;
            transition: background .3s, border-color .3s;
        }

        .nav-search input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 13px;
            width: 150px;
        }

        .nav-search input::placeholder {
            color: rgba(255, 255, 255, .5);
        }

        .nav-search button {
            color: #fff;
            background: rgba(240, 165, 0, .85);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: background .3s, transform .2s;
        }

        .nav-search button:hover {
            background: var(--accent);
            transform: scale(1.08);
        }

        .nav-toggle {
            display: none;
            color: #fff;
            font-size: 24px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .15);
            width: 44px;
            height: 44px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background .3s;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, .2);
        }

        /* 分类页 Hero */
        .category-hero {
            position: relative;
            padding: 96px 0 88px;
            background: linear-gradient(135deg, #0f2140 0%, #1e3a6e 55%, #2b4a82 100%);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: .18;
            z-index: 0;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240, 165, 0, .2) 0%, transparent 70%);
            z-index: 0;
        }

        .category-hero .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 165, 0, .15);
            border: 1px solid rgba(240, 165, 0, .3);
            color: #fbbf24;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 24px;
            letter-spacing: .5px;
        }

        .category-hero h1 {
            font-size: 48px;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .category-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, .8);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 680px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, #f0a500, #d97706);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            padding: 14px 30px;
            border-radius: 999px;
            box-shadow: 0 8px 24px rgba(240, 165, 0, .35);
            transition: all .3s;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(240, 165, 0, .4);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 14px 30px;
            border-radius: 999px;
            transition: all .3s;
            backdrop-filter: blur(4px);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .18);
            transform: translateY(-3px);
        }

        /* 面包屑 */
        .breadcrumb-wrap {
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            background: #fff;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-weak);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .sep {
            color: #94a3b8;
            font-size: 12px;
        }

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

        /* 板块通用 */
        .section-block {
            padding: 80px 0;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(53, 104, 220, .1);
            border: 1px solid rgba(53, 104, 220, .15);
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* 热门问题卡片 */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .topic-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            position: relative;
            transition: transform .35s, box-shadow .35s, border-color .3s;
            overflow: hidden;
        }

        .topic-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
            opacity: 0;
            transition: opacity .3s;
        }

        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(53, 104, 220, .25);
        }

        .topic-card:hover::before {
            opacity: 1;
        }

        .topic-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(53, 104, 220, .1), rgba(240, 165, 0, .1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 18px;
            border: 1px solid rgba(53, 104, 220, .1);
        }

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

        .topic-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .topic-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap .3s, color .3s;
        }

        .topic-link:hover {
            gap: 12px;
            color: var(--accent-dark);
        }

        /* FAQ 区块 */
        .faq-area {
            background: linear-gradient(180deg, #f4f6fb 0%, #eef1f8 100%);
            padding: 80px 0;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 340px 1fr;
            gap: 48px;
        }

        .faq-sidebar {
            position: sticky;
            top: 30px;
            align-self: start;
        }

        .faq-sidebar .side-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow-sm);
        }

        .faq-sidebar h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-sidebar ul {
            list-style: none;
        }

        .faq-sidebar li {
            margin-bottom: 6px;
        }

        .faq-sidebar li a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 14px;
            color: var(--text-weak);
            transition: background .3s, color .3s;
        }

        .faq-sidebar li a:hover {
            background: rgba(53, 104, 220, .08);
            color: var(--primary);
        }

        .faq-group {
            margin-bottom: 40px;
        }

        .faq-group-title {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--border);
        }

        .faq-group-title i {
            color: var(--accent);
            font-size: 20px;
            background: rgba(240, 165, 0, .1);
            border-radius: 10px;
            padding: 8px;
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .3s;
        }

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

        .faq-q {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            background: #fff;
            transition: background .3s;
            user-select: none;
        }

        .faq-q:hover {
            background: #f8fafc;
        }

        .faq-q .icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            border-radius: 50%;
            background: rgba(53, 104, 220, .1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform .4s, background .3s, color .3s;
        }

        .faq-item.active .faq-q .icon {
            transform: rotate(180deg);
            background: var(--accent);
            color: #fff;
        }

        .faq-a {
            display: none;
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.75;
            border-top: 1px dashed var(--border);
            padding-top: 16px;
        }

        .faq-item.active .faq-a {
            display: block;
        }

        .faq-a strong {
            color: var(--text);
        }

        .faq-a ol, .faq-a ul {
            margin: 10px 0 0 20px;
        }

        /* 图片卡片 */
        .image-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .image-card {
            border-radius: var(--radius);
            overflow: hidden;
            position: relative;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: transform .35s, box-shadow .35s;
        }

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

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

        .image-card-body {
            padding: 24px;
        }

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

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

        /* 数据统计 */
        .stats-band {
            background: linear-gradient(135deg, #0f2140 0%, #1e3a6e 100%);
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: .12;
        }

        .stats-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            text-align: center;
            padding: 24px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius);
            backdrop-filter: blur(4px);
        }

        .stat-num {
            font-size: 44px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, .8);
            font-weight: 500;
        }

        /* 流程 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .step-card {
            text-align: center;
            padding: 36px 24px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            position: relative;
            transition: transform .3s, box-shadow .3s;
        }

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

        .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 20px rgba(53, 104, 220, .3);
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }

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

        /* CTA */
        .cta-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .cta-box {
            background: linear-gradient(135deg, #1e3a6e 0%, #24447e 50%, #1a3560 100%);
            border-radius: 24px;
            padding: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 24px 64px rgba(15, 33, 64, .25);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(240, 165, 0, .15);
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -60%;
            left: 20%;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .05);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            flex: 1;
        }

        .cta-content h2 {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, .75);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* 页脚 */
        .site-footer {
            background: #0f2140;
            padding: 64px 0 0;
            color: rgba(255, 255, 255, .7);
            border-top: 4px solid var(--accent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand i {
            color: var(--accent);
            font-size: 22px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .6);
            max-width: 320px;
        }

        .site-footer h5 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            transition: color .3s, padding-left .3s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
            flex-wrap: wrap;
            gap: 12px;
        }

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

        /* 响应式 */
        @media (max-width: 1024px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-layout {
                grid-template-columns: 1fr;
            }
            .faq-sidebar {
                position: static;
            }
            .stats-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-box {
                padding: 40px;
                flex-direction: column;
                text-align: center;
            }
            .cta-actions {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #0f2140;
                padding: 20px;
                border-radius: 0 0 16px 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, .3);
                z-index: 100;
            }

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

            .nav-links a {
                padding: 14px 18px;
                border-radius: 8px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-search {
                display: none;
            }

            .category-hero h1 {
                font-size: 36px;
            }

            .section-block {
                padding: 60px 0;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .image-cards {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 520px) {
            .container-site {
                padding: 0 16px;
            }

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

            .category-hero {
                padding: 60px 0 56px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .category-hero p {
                font-size: 15px;
            }

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

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

            .stats-wrap {
                grid-template-columns: 1fr;
            }

            .stat-item {
                padding: 20px;
            }

            .cta-box {
                padding: 32px 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* 焦点可见性 */
        a:focus-visible, button:focus-visible {
            outline: 3px solid rgba(240, 165, 0, .6);
            outline-offset: 2px;
        }

        /* 页脚服务支持链接 */
        .footer-links a i {
            font-size: 12px;
        }