/* roulang page: index */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #dbeafe;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-text-muted: #94a3b8;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-white: #ffffff;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.15);
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        /* ===== 主容器 ===== */
        .main-container {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition);
        }

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

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 0 0 auto;
            min-width: 0;
        }

        .nav-left {
            justify-content: flex-end;
            flex: 1;
        }

        .nav-right {
            justify-content: flex-start;
            flex: 1;
        }

        .nav-logo {
            flex: 0 0 auto;
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            color: var(--color-brand);
            white-space: nowrap;
            transition: color var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-soft);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
            letter-spacing: 0.01em;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2.5px;
            background: var(--color-brand);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .nav-link:hover {
            color: var(--color-brand);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--color-brand);
            font-weight: 600;
        }

        .nav-link.active::after {
            width: 100%;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--color-brand);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: var(--radius);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
            border: none;
            cursor: pointer;
        }

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

        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--color-text);
            font-size: 1.4rem;
            line-height: 1;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

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

        .mobile-menu-panel {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 99;
            padding: 20px 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

        .mobile-menu-panel.open {
            display: flex;
        }

        .mobile-nav-link {
            display: block;
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--color-text);
            padding: 14px 16px;
            border-radius: var(--radius);
            transition: all var(--transition-fast);
        }

        .mobile-nav-link:hover,
        .mobile-nav-link.active {
            background: var(--color-brand-light);
            color: var(--color-brand);
        }

        .mobile-nav-cta {
            display: block;
            text-align: center;
            margin-top: 12px;
            padding: 14px 20px;
            background: var(--color-brand);
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius);
            font-size: 1.05rem;
            transition: all var(--transition-fast);
        }

        .mobile-nav-cta:hover {
            background: var(--color-brand-dark);
        }

        @media (max-width: 920px) {
            .nav-left,
            .nav-right {
                display: none;
            }

            .nav-wrapper {
                justify-content: space-between;
            }

            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-lg {
            padding: 96px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-brand);
            background: var(--color-brand-light);
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-text);
            margin: 0 0 16px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-soft);
            margin: 0 0 40px;
            max-width: 640px;
            line-height: 1.6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-lg {
                padding: 64px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 1rem;
            }
        }

        /* ===== 卡片通用 ===== */
        .card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

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

        .card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            background: var(--color-bg-alt);
        }

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

        .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-brand);
            background: var(--color-brand-light);
            padding: 4px 10px;
            border-radius: 14px;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }

        .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .card-desc {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            margin: 0;
            line-height: 1.55;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--color-text-muted);
            margin-top: 10px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius);
            cursor: pointer;
            border: none;
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
            text-align: center;
        }

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

        .btn-primary:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-brand);
            border: 2px solid var(--color-brand);
        }

        .btn-outline:hover {
            background: var(--color-brand);
            color: #fff;
            box-shadow: var(--shadow);
            transform: translateY(-1px);
        }

        .btn-outline:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-lg {
            padding: 15px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }

        .btn-white {
            background: #fff;
            color: var(--color-brand);
            font-weight: 600;
        }

        .btn-white:hover {
            background: #f1f5f9;
            box-shadow: var(--shadow);
            transform: translateY(-1px);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            padding: 100px 0 90px;
            background: linear-gradient(160deg, #f0f5ff 0%, #e8f0fe 25%, #f8fafc 60%, #fff 100%);
            overflow: hidden;
        }

        .hero-bg-image {
            position: absolute;
            right: -40px;
            top: 50%;
            transform: translateY(-50%);
            width: 520px;
            max-width: 45vw;
            opacity: 0.55;
            pointer-events: none;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 620px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-brand);
            background: rgba(37, 99, 235, 0.08);
            padding: 8px 16px;
            border-radius: 24px;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }

        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            background: var(--color-accent);
            border-radius: 50%;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.6); }
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-text);
            margin: 0 0 18px;
            line-height: 1.2;
        }

        .hero-title .highlight {
            color: var(--color-brand);
            position: relative;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--color-text-soft);
            margin: 0 0 32px;
            line-height: 1.65;
            max-width: 500px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .hero-stats {
            display: flex;
            gap: 36px;
            margin-top: 48px;
            flex-wrap: wrap;
        }

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

        .hero-stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-brand);
            letter-spacing: -0.01em;
            line-height: 1;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        @media (max-width: 920px) {
            .hero-section {
                padding: 64px 0 56px;
            }
            .hero-bg-image {
                right: -60px;
                width: 340px;
                max-width: 50vw;
                opacity: 0.35;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 20px;
                margin-top: 32px;
            }
            .hero-stat-number {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 600px) {
            .hero-bg-image {
                display: none;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 图文区块 ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .split-block.reverse {
            direction: rtl;
        }

        .split-block.reverse > * {
            direction: ltr;
        }

        .split-image {
            width: 100%;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4 / 3;
            object-fit: cover;
            background: var(--color-bg-alt);
        }

        .split-text h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 0 0 14px;
            line-height: 1.3;
        }

        .split-text p {
            color: var(--color-text-soft);
            margin: 0 0 10px;
            line-height: 1.65;
        }

        .split-features {
            list-style: none;
            padding: 0;
            margin: 18px 0 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .split-features li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--color-text);
        }

        .split-features li .check-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            background: #dbeafe;
            color: #2563eb;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .split-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .split-text h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== 网格卡片 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        @media (max-width: 920px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 560px) {
            .card-grid,
            .card-grid.cols-2,
            .card-grid.cols-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps-list {
            display: flex;
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            flex: 1;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border-light);
            position: relative;
            counter-increment: step;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

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

        .step-item::before {
            content: counter(step);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--color-brand);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            border-radius: 50%;
            margin-bottom: 16px;
        }

        .step-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .step-item p {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            margin: 0;
            line-height: 1.55;
        }

        @media (max-width: 768px) {
            .steps-list {
                flex-direction: column;
                gap: 14px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            border-color: var(--color-border);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            cursor: pointer;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--color-text);
            transition: color var(--transition-fast);
            font-family: inherit;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            background: var(--color-bg-alt);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition);
            color: var(--color-text-soft);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--color-brand-light);
            color: var(--color-brand);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

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

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--color-text-soft);
            line-height: 1.65;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 40%, #2563eb 100%);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            margin: 0 0 28px;
            position: relative;
            z-index: 1;
        }

        .cta-section .btn-white {
            position: relative;
            z-index: 1;
        }

        @media (max-width: 600px) {
            .cta-section {
                padding: 40px 24px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 48px 0 28px;
            font-size: 0.9rem;
        }

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

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-desc {
            color: #94a3b8;
            line-height: 1.6;
            font-size: 0.88rem;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #e2e8f0;
            margin: 0 0 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            text-align: center;
            color: #64748b;
            font-size: 0.82rem;
        }

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

        @media (max-width: 500px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== 信息列表（CMS） ===== */
        .info-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .info-list-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--color-white);
            border-radius: var(--radius);
            padding: 16px 20px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .info-list-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--color-border);
            transform: translateX(3px);
        }

        .info-list-thumb {
            width: 64px;
            height: 56px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }

        .info-list-body {
            flex: 1;
            min-width: 0;
        }

        .info-list-body h3 {
            font-size: 0.98rem;
            font-weight: 600;
            margin: 0 0 4px;
            line-height: 1.35;
        }

        .info-list-body p {
            font-size: 0.84rem;
            color: var(--color-text-soft);
            margin: 0;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .info-list-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--color-text-muted);
            flex-shrink: 0;
            text-align: right;
        }

        .info-list-category {
            display: inline-block;
            background: var(--color-brand-light);
            color: var(--color-brand);
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 0.76rem;
            white-space: nowrap;
        }

        @media (max-width: 600px) {
            .info-list-item {
                flex-wrap: wrap;
                gap: 10px;
                padding: 14px;
            }
            .info-list-thumb {
                width: 48px;
                height: 42px;
            }
            .info-list-meta {
                width: 100%;
                text-align: left;
                font-size: 0.75rem;
            }
        }

        /* ===== 统计数字板块 ===== */
        .stats-row {
            display: flex;
            gap: 28px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .stat-card {
            flex: 0 0 auto;
            min-width: 160px;
            text-align: center;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-brand);
            letter-spacing: -0.02em;
            line-height: 1;
        }

        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            margin-top: 8px;
        }

        @media (max-width: 600px) {
            .stats-row {
                gap: 14px;
            }
            .stat-card {
                min-width: 120px;
                padding: 20px 16px;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ===== 空状态 ===== */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-muted);
            font-size: 0.95rem;
            background: var(--color-white);
            border-radius: var(--radius);
            border: 1px dashed var(--color-border);
        }

        /* ===== 分类入口大卡 ===== */
        .category-entry-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            background: var(--color-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

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

        .category-entry-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
            background: var(--color-bg-alt);
        }

        .category-entry-body {
            padding: 36px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .category-entry-body h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 0 10px;
        }

        .category-entry-body p {
            color: var(--color-text-soft);
            margin: 0 0 20px;
            line-height: 1.6;
        }

        @media (max-width: 700px) {
            .category-entry-card {
                grid-template-columns: 1fr;
            }
            .category-entry-image {
                aspect-ratio: 16 / 9;
                max-height: 220px;
            }
            .category-entry-body {
                padding: 24px 20px;
            }
            .category-entry-body h3 {
                font-size: 1.25rem;
            }
        }

/* roulang page: article */
:root {
            --color-brand-700: #1e3f6d;
            --color-brand-800: #0f2b46;
            --color-brand-900: #091c30;
            --color-accent-400: #d4a853;
            --color-accent-500: #c4953a;
            --color-surface: #f7f8fa;
            --color-card: #ffffff;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --color-text: #1e293b;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
            --radius-md: 0.625rem;
            --radius-lg: 0.875rem;
            --radius-xl: 1rem;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            background-color: var(--color-surface);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ========== Container ========== */
        .main-container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ========== Site Header ========== */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            background: rgba(255, 255, 255, 0.97);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1rem;
            position: relative;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex: 1;
            min-width: 0;
        }

        .nav-left {
            justify-content: flex-end;
            padding-right: 0.75rem;
        }
        .nav-right {
            justify-content: flex-start;
            padding-left: 0.75rem;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: 0.925rem;
            font-weight: 500;
            color: #475569;
            text-decoration: none;
            border-radius: 0.5rem;
            transition: all 0.22s ease;
            white-space: nowrap;
            letter-spacing: 0.01em;
            position: relative;
        }
        .nav-link:hover {
            color: var(--color-brand-700);
            background: #f1f5f9;
        }
        .nav-link.active {
            color: var(--color-brand-700);
            font-weight: 600;
            background: #eef2f7;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--color-accent-400);
            border-radius: 0 0 3px 3px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-brand-800);
            text-decoration: none;
            letter-spacing: -0.01em;
            flex-shrink: 0;
            transition: opacity 0.2s ease;
        }
        .nav-logo:hover {
            opacity: 0.85;
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--color-brand-700);
            color: #fff;
            border-radius: 0.625rem;
            font-size: 0.95rem;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.55rem 1.25rem;
            font-size: 0.875rem;
            font-weight: 600;
            color: #ffffff;
            background: var(--color-brand-700);
            border-radius: 0.5rem;
            text-decoration: none;
            transition: all 0.22s ease;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-cta-btn:hover {
            background: var(--color-brand-800);
            box-shadow: 0 4px 14px rgba(15, 43, 70, 0.25);
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.35rem;
            color: #475569;
            cursor: pointer;
            padding: 0.5rem;
            border-radius: 0.5rem;
            transition: all 0.2s ease;
        }
        .mobile-menu-toggle:hover {
            background: #f1f5f9;
            color: var(--color-brand-700);
        }

        /* ========== Article Banner ========== */
        .article-banner {
            position: relative;
            background: linear-gradient(135deg, #0f2b46 0%, #1a3a5c 40%, #1e3f6d 100%);
            padding: 3rem 0 2.5rem;
            overflow: hidden;
            color: #ffffff;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-surface), transparent);
            pointer-events: none;
        }
        .article-banner .banner-content {
            position: relative;
            z-index: 1;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.35rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 1rem;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: #ffffff;
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.7rem;
        }

        /* ========== Article Main ========== */
        .article-main {
            flex: 1;
            padding: 0 0 3rem;
            margin-top: -1.5rem;
            position: relative;
            z-index: 2;
        }
        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            padding: 2.5rem 3rem;
            max-width: 860px;
            margin: 0 auto;
            border: 1px solid var(--color-border);
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 1.25rem;
        }
        .article-category-tag {
            display: inline-block;
            padding: 0.3rem 0.85rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-brand-700);
            background: #eef2f7;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }
        .article-date {
            font-size: 0.85rem;
            color: var(--color-muted);
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }
        .article-date i {
            font-size: 0.75rem;
        }

        .article-featured-image {
            margin: 1.5rem 0 2rem;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .article-featured-image img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
            max-height: 420px;
        }

        /* ========== Article Body Typography ========== */
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: #334155;
            letter-spacing: 0.005em;
        }
        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-brand-800);
            margin: 2.25rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eef2f7;
            letter-spacing: -0.01em;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 650;
            color: #1e3f6d;
            margin: 1.75rem 0 0.75rem;
        }
        .article-body p {
            margin-bottom: 1.15rem;
            text-align: justify;
            text-justify: inter-character;
        }
        .article-body ul,
        .article-body ol {
            margin: 1rem 0 1.25rem 1.5rem;
            padding: 0;
        }
        .article-body li {
            margin-bottom: 0.5rem;
            padding-left: 0.25rem;
        }
        .article-body ul li::marker {
            color: var(--color-accent-400);
        }
        .article-body blockquote {
            margin: 1.75rem 0;
            padding: 1.25rem 1.75rem;
            background: #f8fafc;
            border-left: 4px solid var(--color-accent-400);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: #475569;
            font-style: italic;
        }
        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin: 1.25rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body a {
            color: var(--color-brand-700);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color 0.2s ease;
        }
        .article-body a:hover {
            color: var(--color-brand-900);
        }
        .article-body code {
            background: #f1f5f9;
            padding: 0.15rem 0.5rem;
            border-radius: 4px;
            font-size: 0.9em;
            color: #e05252;
        }
        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 1.25rem 1.5rem;
            border-radius: var(--radius-md);
            overflow-x: auto;
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 1.25rem 0;
        }

        /* ========== Article Footer Bar ========== */
        .article-footer-bar {
            margin-top: 2.5rem;
            padding-top: 1.75rem;
            border-top: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            align-items: center;
        }
        .article-tags span.tag-label {
            font-size: 0.8rem;
            color: var(--color-muted);
            font-weight: 500;
        }
        .article-tags .tag {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            font-size: 0.78rem;
            color: #475569;
            background: #f1f5f9;
            border-radius: 999px;
            transition: all 0.2s ease;
            text-decoration: none;
        }
        .article-tags .tag:hover {
            background: #e2e8f0;
            color: var(--color-brand-700);
        }
        .share-buttons {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .share-buttons span {
            font-size: 0.8rem;
            color: var(--color-muted);
            margin-right: 0.25rem;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            border: 1px solid var(--color-border);
            background: #fff;
            color: #475569;
            font-size: 0.85rem;
            text-decoration: none;
            transition: all 0.22s ease;
        }
        .share-btn:hover {
            background: var(--color-brand-700);
            color: #fff;
            border-color: var(--color-brand-700);
            box-shadow: 0 3px 10px rgba(30, 63, 109, 0.25);
            transform: translateY(-2px);
        }

        /* ========== Related Articles ========== */
        .related-section {
            padding: 3rem 0 2rem;
            max-width: 860px;
            margin: 0 auto;
        }
        .related-section h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-brand-800);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .related-section h3::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 22px;
            background: var(--color-accent-400);
            border-radius: 2px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all 0.28s ease;
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: #cbd5e1;
        }
        .related-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
        }
        .related-card-body {
            padding: 1rem 1.15rem 1.15rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-body .rc-tag {
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--color-accent-500);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 0.4rem;
        }
        .related-card-body h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #1e293b;
            margin: 0 0 0.5rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-body .rc-date {
            font-size: 0.75rem;
            color: var(--color-muted);
            margin-top: auto;
        }

        /* ========== Not Found State ========== */
        .not-found-card {
            text-align: center;
            padding: 3rem 2rem;
        }
        .not-found-icon {
            font-size: 4rem;
            color: #cbd5e1;
            margin-bottom: 1.25rem;
        }
        .not-found-card h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1e293b;
            margin-bottom: 0.75rem;
        }
        .not-found-card p {
            color: var(--color-muted);
            margin-bottom: 1.75rem;
            font-size: 1rem;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(160deg, #0f2b46 0%, #1a3a5c 50%, #1e3f6d 100%);
            padding: 3.5rem 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            pointer-events: none;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 2rem;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 0.85rem;
        }
        .btn-primary-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            background: var(--color-accent-400);
            border-radius: 0.6rem;
            text-decoration: none;
            transition: all 0.25s ease;
            box-shadow: 0 4px 16px rgba(212, 168, 83, 0.3);
        }
        .btn-primary-cta:hover {
            background: #e0b85e;
            box-shadow: 0 8px 24px rgba(212, 168, 83, 0.45);
            transform: translateY(-2px);
        }
        .btn-outline-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.35);
            border-radius: 0.6rem;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        .btn-outline-cta:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        /* ========== Site Footer ========== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 0.65rem;
            letter-spacing: -0.01em;
        }
        .footer-desc {
            color: #94a3b8;
            line-height: 1.7;
            font-size: 0.875rem;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 650;
            color: #e2e8f0;
            margin-bottom: 0.9rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s ease;
            font-size: 0.85rem;
        }
        .footer-col ul li a:hover {
            color: #ffffff;
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 1.25rem;
            text-align: center;
            color: #64748b;
            font-size: 0.8rem;
        }
        .footer-bottom a {
            color: #64748b;
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: #94a3b8;
            text-decoration: underline;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .nav-left {
                gap: 0;
                padding-right: 0.25rem;
            }
            .nav-right {
                padding-left: 0.25rem;
            }
            .nav-link {
                padding: 0.45rem 0.7rem;
                font-size: 0.85rem;
            }
            .nav-logo {
                font-size: 1.05rem;
                gap: 0.35rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.8rem;
                border-radius: 0.5rem;
            }
            .nav-cta-btn {
                padding: 0.45rem 1rem;
                font-size: 0.8rem;
            }
            .article-card {
                padding: 2rem 1.75rem;
                margin: 0 0.75rem;
                border-radius: var(--radius-lg);
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .related-section {
                padding-left: 0.75rem;
                padding-right: 0.75rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }

        @media (max-width: 768px) {
            .nav-wrapper {
                height: 56px;
                flex-wrap: wrap;
            }
            .nav-left,
            .nav-right {
                display: none;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 0.75rem 1rem;
                gap: 0.3rem;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                z-index: 999;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav-left.nav-open,
            .nav-right.nav-open {
                display: flex;
            }
            .nav-left {
                top: 56px;
            }
            .nav-right {
                top: auto;
            }
            .nav-wrapper.nav-expanded .nav-left {
                display: flex;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 0.75rem 1rem;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                z-index: 999;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-logo {
                font-size: 1rem;
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-left {
                justify-content: flex-start;
                padding-right: 0;
            }
            .nav-right {
                justify-content: flex-start;
                padding-left: 0;
            }
            .article-banner {
                padding: 2rem 0 1.75rem;
            }
            .article-card {
                padding: 1.5rem 1.25rem;
                margin: 0 0.5rem;
                border-radius: 0.75rem;
            }
            .article-body {
                font-size: 0.975rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.25rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .article-featured-image img {
                max-height: 260px;
            }
            .article-footer-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 0.85rem;
            }
            .related-card-img {
                height: 180px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
                text-align: center;
            }
            .footer-desc {
                max-width: 100%;
            }
            .share-buttons {
                width: 100%;
                justify-content: flex-start;
            }
        }

        @media (max-width: 520px) {
            .article-card {
                padding: 1.25rem 1rem;
                margin: 0 0.25rem;
            }
            .article-meta {
                gap: 0.6rem;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .article-body {
                font-size: 0.95rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary-cta,
            .btn-outline-cta {
                width: 100%;
                justify-content: center;
                max-width: 300px;
            }
            .nav-logo {
                font-size: 0.9rem;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.7rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1e40af;
            --color-primary-light: #2563eb;
            --color-primary-dark: #1e3a8a;
            --color-accent: #f59e0b;
            --color-accent-light: #fbbf24;
            --color-bg: #f8fafc;
            --color-bg-white: #ffffff;
            --color-bg-dark: #0f172a;
            --color-text: #1e293b;
            --color-text-soft: #475569;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.10), 0 4px 8px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.06);
            --transition-fast: 150ms ease;
            --transition-normal: 250ms ease;
            --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
        }

        .main-container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

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

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            min-width: 0;
        }

        .nav-left {
            justify-content: flex-end;
        }

        .nav-right {
            justify-content: flex-start;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-soft);
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: #eff6ff;
        }

        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
            background: #eff6ff;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
            flex-shrink: 0;
            padding: 6px 4px;
            transition: opacity var(--transition-fast);
        }

        .nav-logo:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #ffffff;
            background: var(--color-primary);
            border-radius: var(--radius-full);
            white-space: nowrap;
            transition: all var(--transition-normal);
            box-shadow: 0 2px 8px rgba(30, 64, 175, 0.25);
        }

        .nav-cta-btn:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.35);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: transparent;
            color: var(--color-text);
            font-size: 1.4rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-menu-toggle:hover {
            background: #f1f5f9;
            color: var(--color-primary);
        }

        /* Mobile Nav Overlay */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-normal);
        }

        .mobile-nav-overlay.active {
            opacity: 1;
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: #ffffff;
            z-index: 1000;
            padding: 16px 24px 24px;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-lg);
            transform: translateY(-12px);
            opacity: 0;
            transition: all var(--transition-normal);
            flex-direction: column;
            gap: 6px;
        }

        .mobile-nav-panel.active {
            transform: translateY(0);
            opacity: 1;
        }

        .mobile-nav-panel .nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 1rem;
            border-radius: var(--radius-md);
            text-align: center;
        }

        .mobile-nav-panel .nav-cta-btn {
            display: block;
            text-align: center;
            margin-top: 6px;
            padding: 12px 20px;
            font-size: 0.95rem;
        }

        /* ========== PAGE BANNER ========== */
        .category-banner {
            position: relative;
            padding: 80px 0 64px;
            background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 40%, #2563eb 100%);
            overflow: hidden;
            color: #ffffff;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .category-banner .banner-content {
            position: relative;
            z-index: 1;
            max-width: 700px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.75rem;
        }

        .breadcrumb .current {
            color: #ffffff;
            font-weight: 500;
        }

        .category-banner h1 {
            font-size: 2.75rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .category-banner .banner-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            max-width: 560px;
        }

        .category-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 500;
            color: #ffffff;
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }

        /* ========== SECTION COMMONS ========== */
        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: #ffffff;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .section-label {
            display: inline-block;
            padding: 5px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-primary);
            background: #eff6ff;
            border-radius: var(--radius-full);
            letter-spacing: 0.03em;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.015em;
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .section-header .section-desc {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

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

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

        .card-solution:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #cbd5e1;
        }

        .card-solution .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #f1f5f9;
        }

        .card-solution .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .card-solution .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 12px;
            background: rgba(30, 64, 175, 0.9);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: var(--radius-full);
            backdrop-filter: blur(4px);
            z-index: 2;
        }

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

        .card-solution .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-solution .card-body p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.65;
            flex: 1;
            margin-bottom: 14px;
        }

        .card-solution .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--color-text-light);
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
        }

        .card-solution .card-meta i {
            color: var(--color-primary-light);
            font-size: 0.7rem;
        }

        /* ========== PROCESS STEPS ========== */
        .process-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            position: relative;
        }

        .process-item {
            text-align: center;
            padding: 28px 20px;
            position: relative;
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
        }

        .process-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: #cbd5e1;
        }

        .process-item .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            border-radius: 50%;
            box-shadow: 0 4px 14px rgba(30, 64, 175, 0.3);
        }

        .process-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .process-item p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ========== RESOURCE LIST ========== */
        .resource-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .resource-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #ffffff;
            padding: 18px 22px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
        }

        .resource-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #cbd5e1;
            transform: translateX(4px);
        }

        .resource-item .resource-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            background: #eff6ff;
            color: var(--color-primary);
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
        }

        .resource-item .resource-info {
            flex: 1;
            min-width: 0;
        }

        .resource-item .resource-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 2px;
        }

        .resource-item .resource-info span {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        .resource-item .resource-arrow {
            color: var(--color-text-light);
            font-size: 0.85rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .resource-item:hover .resource-arrow {
            color: var(--color-primary);
            transform: translateX(3px);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            border-color: #cbd5e1;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 22px;
            background: transparent;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            gap: 12px;
            transition: color var(--transition-fast);
        }

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

        .faq-question i {
            font-size: 0.8rem;
            color: var(--color-text-light);
            transition: transform var(--transition-normal);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

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

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section-wrap {
            background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 60%, #2563eb 100%);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .cta-section-wrap::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .cta-section-wrap::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -30px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .cta-section-wrap .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-section-wrap h2 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.015em;
            margin-bottom: 10px;
        }

        .cta-section-wrap p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btn-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary-dark);
            background: #ffffff;
            border-radius: var(--radius-full);
            transition: all var(--transition-normal);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .cta-btn-lg:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.22);
            background: #f8fafc;
        }

        .cta-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            font-size: 1rem;
            font-weight: 600;
            color: #ffffff;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--radius-full);
            transition: all var(--transition-normal);
            margin-left: 12px;
        }

        .cta-btn-outline:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.1);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-dark);
            color: #cbd5e1;
            padding: 56px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .footer-desc {
            font-size: 0.875rem;
            color: #94a3b8;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #e2e8f0;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

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

        .footer-col ul li a {
            font-size: 0.875rem;
            color: #94a3b8;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.8rem;
            color: #64748b;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .process-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .category-banner h1 {
                font-size: 2.2rem;
            }
            .cta-section-wrap {
                padding: 40px 28px;
            }
            .cta-section-wrap h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .mobile-nav-overlay {
                display: block;
            }
            .mobile-nav-panel {
                display: flex;
            }
            .nav-wrapper {
                justify-content: space-between;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .process-list {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .category-banner {
                padding: 52px 0 40px;
            }
            .category-banner h1 {
                font-size: 1.75rem;
            }
            .category-banner .banner-subtitle {
                font-size: 0.95rem;
            }
            .resource-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px;
            }
            .resource-item .resource-arrow {
                align-self: flex-end;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section-wrap {
                padding: 32px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section-wrap h2 {
                font-size: 1.4rem;
            }
            .cta-btn-outline {
                margin-left: 0;
                margin-top: 12px;
                display: block;
                text-align: center;
            }
            .cta-btn-lg {
                display: block;
                text-align: center;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .process-list {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .process-item {
                padding: 20px 16px;
            }
            .category-banner h1 {
                font-size: 1.5rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .main-container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .site-header {
                --header-height: 60px;
                height: 60px;
            }
        }