/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2d8a4e;
            --primary-light: #3fa863;
            --primary-dark: #1e6b38;
            --accent: #f5a623;
            --accent-light: #f8c26a;
            --accent-dark: #d98e1a;
            --dark: #1a3a2a;
            --dark-mid: #2d4a3a;
            --text: #2d3436;
            --text-light: #636e72;
            --text-white: #f8faf9;
            --bg: #f0f7f2;
            --bg-card: #ffffff;
            --border: #dce8e0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.25s ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .header-left {
            display: flex;
            align-items: center;
            gap: 40px;
            flex: 1;
        }

        .site-logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .site-logo i {
            font-size: 1.5rem;
            color: var(--primary);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list li a {
            display: block;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-list li a:hover {
            color: var(--primary);
            background: rgba(45, 138, 78, 0.08);
        }
        .nav-list li a.active {
            color: var(--primary-dark);
            background: rgba(45, 138, 78, 0.12);
        }
        .nav-list li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border-radius: 40px;
            padding: 0 16px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(45, 138, 78, 0.15);
        }
        .header-search input {
            border: none;
            background: transparent;
            padding: 8px 8px 8px 0;
            width: 140px;
            font-size: 0.9rem;
            color: var(--text);
            outline: none;
        }
        .header-search input::placeholder {
            color: var(--text-light);
        }
        .header-search button {
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
            padding: 8px 4px;
            font-size: 1rem;
        }
        .header-search button:hover {
            color: var(--primary);
        }

        .btn-header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-header-cta:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-header-cta:active {
            transform: translateY(0);
        }

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

        /* ===== 按钮通用 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 18px 40px;
            font-size: 1.1rem;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 620px;
            margin-bottom: 48px;
            line-height: 1.6;
        }
        .section-title-center {
            text-align: center;
        }
        .section-subtitle-center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(45, 138, 78, 0.1);
            color: var(--primary-dark);
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        /* ===== Hero ===== */
        .hero {
            min-height: calc(100vh - var(--nav-height));
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            background: var(--dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.3;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 58, 42, 0.92) 40%, rgba(26, 58, 42, 0.6) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            width: 100%;
            padding: 60px 24px;
        }
        .hero-content {
            max-width: 600px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            padding: 6px 18px 6px 12px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: var(--text-white);
            margin-bottom: 24px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-badge i {
            color: var(--accent);
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero h1 span {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-actions .btn-primary {
            background: var(--accent);
            color: var(--dark);
        }
        .hero-actions .btn-primary:hover {
            background: var(--accent-light);
        }
        .hero-actions .btn-outline {
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }
        .hero-actions .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-visual-inner {
            width: 100%;
            max-width: 480px;
            aspect-ratio: 4 / 3;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: url('/assets/images/coverpic/cover-1.png') center center / cover no-repeat;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-visual-overlay {
            position: absolute;
            bottom: -20px;
            right: -20px;
            padding: 20px 28px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .hero-visual-overlay .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
        }
        .hero-visual-overlay .label {
            font-size: 0.9rem;
            opacity: 0.9;
        }

        /* ===== 数据亮点 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg-card);
            padding: 32px 24px;
            border-radius: var(--radius-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-card .icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stat-card .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.2;
        }
        .stat-card .num span {
            font-size: 1.2rem;
            color: var(--text-light);
        }
        .stat-card .label {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-top: 6px;
        }

        /* ===== 平台介绍 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4 / 3;
            background: url('/assets/images/coverpic/cover-2.png') center center / cover no-repeat;
        }
        .intro-text h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }
        .intro-text p {
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }
        .intro-feature {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--text);
        }
        .intro-feature i {
            color: var(--primary);
            font-size: 1.1rem;
            width: 24px;
        }

        /* ===== 分类入口 ===== */
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .category-card .card-img {
            aspect-ratio: 16 / 9;
            background: url('/assets/images/coverpic/cover-3.png') center center / cover no-repeat;
            position: relative;
        }
        .category-card .card-img .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary-dark);
        }
        .category-card .card-body {
            padding: 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .category-card .card-body p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }
        .category-card .card-footer {
            padding: 0 28px 24px;
        }
        .category-card .card-footer .btn {
            width: 100%;
            justify-content: center;
        }

        /* ===== 资讯列表 (CMS) ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .news-card .card-img {
            aspect-ratio: 16 / 10;
            background: url('/assets/images/coverpic/cover-4.png') center center / cover no-repeat;
        }
        .news-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .news-card .card-meta .cat {
            background: rgba(45, 138, 78, 0.1);
            color: var(--primary-dark);
            padding: 2px 12px;
            border-radius: 40px;
            font-weight: 600;
        }
        .news-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .card-body .read-more {
            margin-top: 14px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-card .card-body .read-more:hover {
            gap: 10px;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
            color: var(--text-light);
            font-size: 1rem;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(to right, var(--primary), var(--accent));
            z-index: 0;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            position: relative;
            z-index: 1;
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(45, 138, 78, 0.3);
        }
        .step-card:nth-child(2) .step-num {
            background: var(--accent);
            box-shadow: 0 4px 14px rgba(245, 166, 35, 0.3);
        }
        .step-card:nth-child(3) .step-num {
            background: var(--primary-light);
        }
        .step-card:nth-child(4) .step-num {
            background: var(--accent-dark);
            box-shadow: 0 4px 14px rgba(217, 142, 26, 0.3);
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-question {
            padding: 20px 28px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 28px 20px;
            color: var(--text-light);
            line-height: 1.7;
            font-size: 0.95rem;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 80px 24px;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 36px;
        }
        .cta-section .btn-accent {
            font-size: 1.1rem;
            padding: 18px 44px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #1a2a20;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .site-logo {
            color: #fff;
            margin-bottom: 12px;
            font-size: 1.2rem;
        }
        .footer-brand .site-logo i {
            color: var(--accent);
        }
        .footer-brand .site-logo span {
            background: linear-gradient(135deg, #fff, var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 300px;
            margin-top: 12px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero p {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-visual-inner {
                max-width: 100%;
                aspect-ratio: 16 / 10;
            }
            .hero-visual-overlay {
                bottom: -10px;
                right: -10px;
            }
            .hero h1 {
                font-size: 2.6rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .header-left .nav-list {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
            }
            .header-left .nav-list.open {
                display: flex;
            }
            .header-left .nav-list li a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .header-left .nav-list li a.active::after {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .header-search {
                display: none;
            }
            .header-right .btn-header-cta {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero .container {
                padding: 40px 20px;
            }
            .hero-visual-overlay {
                position: relative;
                bottom: 0;
                right: 0;
                margin-top: 16px;
                padding: 16px 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .num {
                font-size: 1.8rem;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .intro-features {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section .container {
                padding: 56px 20px;
            }
            .faq-question {
                padding: 16px 20px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 20px 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-card .num {
                font-size: 1.5rem;
            }
            .stat-card .label {
                font-size: 0.8rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .category-card .card-body {
                padding: 18px 20px;
            }
            .category-card .card-footer {
                padding: 0 20px 18px;
            }
            .header-right .btn-header-cta {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .site-logo i {
                font-size: 1.2rem;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #2A7A3B;
            --primary-dark: #1E5E2B;
            --primary-light: #3FA85A;
            --primary-bg: #F0F7F2;
            --accent: #F5A623;
            --accent-dark: #D4891E;
            --accent-light: #FFD166;
            --bg-body: #FFFFFF;
            --bg-section: #F9FCFA;
            --bg-card: #FFFFFF;
            --bg-dark: #1A2E22;
            --text-primary: #1A2E22;
            --text-secondary: #4A6A5A;
            --text-light: #7A9A8A;
            --text-white: #FFFFFF;
            --border: #E2ECE6;
            --border-light: #F0F5F2;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 46, 34, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 46, 34, 0.08);
            --shadow-lg: 0 20px 50px rgba(26, 46, 34, 0.12);
            --shadow-hover: 0 16px 48px rgba(26, 46, 34, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --header-h: 72px;
            --content-w: 1200px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover, a:focus { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        .container { max-width: var(--content-w); margin: 0 auto; padding: 0 24px; }
        .container-fluid { max-width: 100%; padding: 0 24px; }

        /* ===== Header / Navigation ===== */
        .site-header {
            background: var(--bg-body);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-h);
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            max-width: var(--content-w);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header-left { display: flex; align-items: center; gap: 32px; flex-shrink: 0; }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .site-logo i { color: var(--primary-light); font-size: 1.6rem; }
        .site-logo:hover { color: var(--primary); transform: scale(1.02); }
        .nav-list { display: flex; align-items: center; gap: 6px; }
        .nav-list li a {
            display: inline-block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-list li a:hover,
        .nav-list li a:focus-visible { color: var(--primary); background: var(--primary-bg); }
        .nav-list li a.active {
            color: var(--primary-dark);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-list li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .header-right { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-section);
            border-radius: 50px;
            padding: 0 6px 0 16px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .header-search:focus-within { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(42, 122, 59, 0.12); }
        .header-search input {
            background: transparent;
            border: none;
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--text-primary);
            min-width: 160px;
        }
        .header-search input::placeholder { color: var(--text-light); }
        .header-search button {
            padding: 6px 14px;
            color: var(--text-light);
            transition: var(--transition);
            border-radius: 50px;
        }
        .header-search button:hover { color: var(--primary); }
        .btn-header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 22px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(42, 122, 59, 0.3);
            flex-shrink: 0;
        }
        .btn-header-cta i { font-size: 1rem; }
        .btn-header-cta:hover { background: var(--primary-dark); color: var(--text-white); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(42, 122, 59, 0.35); }
        .btn-header-cta:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }
        .mobile-toggle { display: none; font-size: 1.5rem; color: var(--text-primary); padding: 6px 10px; border-radius: var(--radius-sm); transition: var(--transition); }
        .mobile-toggle:hover { background: var(--primary-bg); color: var(--primary); }

        /* ===== Mobile Nav ===== */
        @media (max-width: 1024px) {
            .nav-list { gap: 4px; }
            .nav-list li a { padding: 6px 14px; font-size: 0.88rem; }
            .header-search input { min-width: 120px; }
        }
        @media (max-width: 768px) {
            .header-inner { padding: 0 16px; }
            .nav-list { display: none; }
            .header-search { display: none; }
            .btn-header-cta { display: none; }
            .mobile-toggle { display: block; }
            .site-logo { font-size: 1.2rem; }
            .site-logo i { font-size: 1.3rem; }
            .nav-list.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--bg-body);
                border-bottom: 2px solid var(--border);
                padding: 16px 24px;
                gap: 8px;
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-list.mobile-open li a { display: block; padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .nav-list.mobile-open li a.active::after { display: none; }
            .header-right.mobile-open .header-search,
            .header-right.mobile-open .btn-header-cta { display: flex; }
            .header-right.mobile-open { gap: 12px; flex-wrap: wrap; }
        }
        @media (max-width: 520px) {
            .site-logo span { font-size: 1rem; }
            .header-inner { padding: 0 12px; }
        }

        /* ===== Article Hero / Banner ===== */
        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 24px;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb .sep { color: rgba(255,255,255,0.4); }
        .article-hero .breadcrumb .current { color: #fff; font-weight: 500; }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            max-width: 860px;
            margin-bottom: 20px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.12);
        }
        .article-meta-hero {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            color: rgba(255,255,255,0.85);
            font-size: 0.95rem;
        }
        .article-meta-hero .meta-item { display: flex; align-items: center; gap: 6px; }
        .article-meta-hero .meta-item i { font-size: 0.9rem; }
        .article-meta-hero .tag {
            display: inline-block;
            padding: 3px 14px;
            background: rgba(255,255,255,0.2);
            backdrop-filter: blur(4px);
            border-radius: 50px;
            color: #fff;
            font-size: 0.8rem;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .article-hero { padding: 56px 0 40px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-meta-hero { gap: 12px; font-size: 0.85rem; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.5rem; }
            .article-hero { padding: 40px 0 32px; }
        }

        /* ===== Article Main Content ===== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--bg-body);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-body .featured-image {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 32px;
            object-fit: cover;
            max-height: 480px;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-body .content p { margin-bottom: 1.4em; }
        .article-body .content h2, .article-body .content h3 {
            color: var(--text-primary);
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            font-weight: 700;
        }
        .article-body .content h2 { font-size: 1.6rem; }
        .article-body .content h3 { font-size: 1.25rem; }
        .article-body .content ul, .article-body .content ol {
            padding-left: 1.6em;
            margin-bottom: 1.4em;
        }
        .article-body .content ul { list-style: disc; }
        .article-body .content ol { list-style: decimal; }
        .article-body .content li { margin-bottom: 0.4em; }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary-light);
            background: var(--primary-bg);
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.6em 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body .content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-body .content a:hover { color: var(--primary-dark); }
        .article-body .content img { border-radius: var(--radius-md); margin: 1.6em 0; }
        .article-body .content .align-center { text-align: center; }
        .article-body .content .align-right { text-align: right; }

        .article-not-found {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-not-found i { font-size: 4rem; color: var(--text-light); margin-bottom: 24px; }
        .article-not-found h2 { font-size: 1.8rem; color: var(--text-primary); margin-bottom: 12px; }
        .article-not-found p { color: var(--text-secondary); margin-bottom: 24px; }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== Sidebar ===== */
        .article-sidebar { display: flex; flex-direction: column; gap: 32px; }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-bg);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i { color: var(--primary-light); }
        .sidebar-related li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-related li:last-child { border-bottom: none; }
        .sidebar-related li a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .sidebar-related li a:hover { color: var(--primary); }
        .sidebar-related li a img {
            width: 70px;
            height: 52px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .sidebar-related li a .related-title {
            font-size: 0.9rem;
            font-weight: 500;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-related li a .related-date {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-top: 4px;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            border: none;
        }
        .sidebar-cta h3 { color: #fff; border-bottom-color: rgba(255,255,255,0.2); }
        .sidebar-cta h3 i { color: var(--accent-light); }
        .sidebar-cta p { color: rgba(255,255,255,0.85); font-size: 0.95rem; margin-bottom: 20px; line-height: 1.6; }
        .sidebar-cta .btn-sidebar {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            background: var(--accent);
            color: var(--text-primary);
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(245, 166, 35, 0.35);
        }
        .sidebar-cta .btn-sidebar:hover { background: var(--accent-dark); transform: translateY(-2px); color: #fff; box-shadow: 0 8px 28px rgba(245, 166, 35, 0.4); }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            display: inline-block;
            padding: 5px 14px;
            background: var(--primary-bg);
            color: var(--text-secondary);
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .sidebar-tags a:hover { background: var(--primary); color: #fff; transform: translateY(-1px); }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; gap: 36px; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
        }
        @media (max-width: 768px) {
            .article-body { padding: 28px 20px; }
            .article-layout { gap: 28px; }
            .article-sidebar { grid-template-columns: 1fr; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 20px 16px; border-radius: var(--radius-md); }
            .article-body .content { font-size: 0.95rem; }
        }

        /* ===== Related Articles Section ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg-section);
        }
        .related-section .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-primary);
            text-align: center;
            margin-bottom: 40px;
        }
        .related-section .section-title span { color: var(--primary); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .related-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
        }
        .related-card .card-body .card-cat {
            display: inline-block;
            padding: 2px 12px;
            background: var(--primary-bg);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .related-card .card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card .card-body h4 a { color: inherit; }
        .related-card .card-body h4 a:hover { color: var(--primary); }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .related-card .card-body .card-meta a { color: var(--primary); font-weight: 500; }
        .related-card .card-body .card-meta a:hover { text-decoration: underline; }

        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 600px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-section .section-title { font-size: 1.4rem; }
        }

        /* ===== CTA Section ===== */
        .article-cta {
            padding: 60px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.06;
        }
        .article-cta .container { position: relative; z-index: 2; text-align: center; }
        .article-cta h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .article-cta p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.7);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .article-cta .btn-cta-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .article-cta .btn-primary-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--accent);
            color: var(--text-primary);
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(245, 166, 35, 0.35);
        }
        .article-cta .btn-primary-cta:hover { background: var(--accent-dark); transform: translateY(-3px); box-shadow: 0 12px 36px rgba(245, 166, 35, 0.4); }
        .article-cta .btn-secondary-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.3);
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .article-cta .btn-secondary-cta:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.5); transform: translateY(-3px); }
        @media (max-width: 768px) {
            .article-cta h2 { font-size: 1.5rem; }
            .article-cta p { font-size: 0.95rem; }
            .article-cta .btn-primary-cta, .article-cta .btn-secondary-cta { padding: 12px 28px; font-size: 0.95rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .site-logo { color: #fff; font-size: 1.3rem; margin-bottom: 16px; }
        .footer-brand .site-logo i { color: var(--primary-light); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 360px; }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 3px;
            background: var(--primary-light);
            border-radius: 4px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a, .footer-col ul li span {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li a:hover { color: var(--accent-light); padding-left: 4px; }
        .footer-col ul li a i { width: 18px; color: var(--primary-light); }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
        }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }

        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 600px) {
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-social { justify-content: center; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 16px; }
        .mt-2 { margin-top: 32px; }
        .mb-1 { margin-bottom: 16px; }
        .mb-2 { margin-bottom: 32px; }

        /* ===== Focus / Accessibility ===== */
        :focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: 4px; }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 16px;
            padding: 12px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
            z-index: 9999;
            font-weight: 600;
            transition: top 0.3s;
        }
        .skip-link:focus { top: 0; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a9c4e;
            --primary-dark: #0f7a3a;
            --primary-light: #e8f5ee;
            --secondary: #f57c00;
            --secondary-light: #fff3e0;
            --accent-blue: #1976d2;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-footer: #0f172a;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #f8fafc;
            --text-footer: #cbd5e1;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --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(0,0,0,0.08);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 24px 48px rgba(0,0,0,0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-body);
            min-height: 100vh;
            padding-top: var(--header-h);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        button { cursor: pointer; font-family: inherit; }
        input, textarea, select { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.75rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.375rem; }
        h4 { font-size: 1.125rem; }
        p { margin-bottom: 0.75rem; color: var(--text-secondary); }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

        /* ===== Foundation 覆盖 ===== */
        .grid-container { max-width: var(--container-max); padding-left: 24px; padding-right: 24px; }
        .grid-x { margin-left: -12px; margin-right: -12px; }
        .cell { padding-left: 12px; padding-right: 12px; }
        .grid-x > .cell { margin-bottom: 0; }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-h);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .header-left { display: flex; align-items: center; gap: 32px; }
        .site-logo {
            display: flex; align-items: center; gap: 8px;
            font-size: 1.25rem; font-weight: 800; color: var(--text-primary);
            white-space: nowrap;
        }
        .site-logo i { color: var(--primary); font-size: 1.5rem; }
        .site-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-list { display: flex; align-items: center; gap: 6px; }
        .nav-list li a {
            display: inline-block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-list li a:hover { color: var(--primary); background: var(--primary-light); }
        .nav-list li a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-list li a.active::after {
            content: '';
            position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; border-radius: 2px;
            background: var(--primary);
        }
        .header-right { display: flex; align-items: center; gap: 12px; }
        .header-search {
            display: flex; align-items: center;
            background: var(--bg-body); border: 1px solid var(--border-color);
            border-radius: 999px; overflow: hidden;
            transition: var(--transition);
        }
        .header-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,156,78,0.15); }
        .header-search input {
            border: none; background: transparent;
            padding: 8px 14px; font-size: 0.85rem;
            width: 160px; outline: none; color: var(--text-primary);
        }
        .header-search input::placeholder { color: var(--text-muted); }
        .header-search button {
            background: transparent; border: none;
            padding: 8px 14px; color: var(--text-muted);
            transition: var(--transition);
        }
        .header-search button:hover { color: var(--primary); }
        .btn-header-cta {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 9px 22px;
            background: var(--primary); color: #fff;
            border-radius: 999px; font-size: 0.85rem; font-weight: 600;
            transition: var(--transition); white-space: nowrap;
        }
        .btn-header-cta:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .mobile-toggle { display: none; background: none; border: none; font-size: 1.4rem; color: var(--text-primary); padding: 4px; }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, #0f172a 0%, #1a2a3a 100%);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-banner .bg-overlay {
            position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .page-banner .bg-gradient {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.92) 0%, rgba(26,156,78,0.30) 100%);
        }
        .page-banner .container { position: relative; z-index: 2; text-align: center; }
        .page-banner h1 {
            color: var(--text-white);
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 12px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.2);
        }
        .page-banner h1 i { color: var(--secondary); margin-right: 8px; }
        .page-banner p {
            color: rgba(255,255,255,0.85);
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .page-banner .banner-badge {
            display: inline-block;
            padding: 4px 18px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: 999px;
            color: rgba(255,255,255,0.9);
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .breadcrumb-nav {
            display: flex; justify-content: center; align-items: center; gap: 8px;
            margin-top: 20px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
        }
        .breadcrumb-nav a { color: rgba(255,255,255,0.7); }
        .breadcrumb-nav a:hover { color: #fff; }
        .breadcrumb-nav span { color: rgba(255,255,255,0.9); }

        /* ===== Section 通用 ===== */
        .section-block { padding: 72px 0; }
        .section-block.bg-white { background: var(--bg-white); }
        .section-block.bg-light { background: var(--bg-body); }
        .section-block.bg-primary-light { background: var(--primary-light); }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 { font-size: 2rem; margin-bottom: 10px; }
        .section-title p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto;
            font-size: 1rem;
        }
        .section-title .title-tag {
            display: inline-block;
            padding: 4px 16px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .section-divider {
            width: 48px; height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 12px auto 0;
        }

        /* ===== 注册方式卡片 ===== */
        .method-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .method-card .icon-wrap {
            width: 72px; height: 72px;
            border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.75rem;
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .method-card:hover .icon-wrap { background: var(--primary); color: #fff; transform: scale(1.05); }
        .method-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
        .method-card p { font-size: 0.9rem; color: var(--text-secondary); flex: 1; }
        .method-card .btn-method {
            margin-top: 16px;
            padding: 8px 28px;
            border-radius: 999px;
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--transition);
            display: inline-block;
        }
        .method-card .btn-method:hover { background: var(--primary); color: #fff; }

        /* ===== 流程步骤 ===== */
        .step-grid { counter-reset: step; }
        .step-item {
            counter-increment: step;
            display: flex;
            gap: 20px;
            padding: 24px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            margin-bottom: 16px;
            align-items: flex-start;
        }
        .step-item:hover { box-shadow: var(--shadow-md); border-color: transparent; }
        .step-num {
            flex-shrink: 0;
            width: 48px; height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1.2rem;
            transition: var(--transition);
        }
        .step-item:hover .step-num { background: var(--primary); color: #fff; }
        .step-content { flex: 1; }
        .step-content h4 { font-size: 1.05rem; margin-bottom: 4px; }
        .step-content p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0; }
        .step-img {
            flex-shrink: 0;
            width: 100px; height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--bg-body);
            display: flex; align-items: center; justify-content: center;
        }
        .step-img img { width: 100%; height: 100%; object-fit: cover; }

        /* ===== 注册须知 ===== */
        .notice-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            height: 100%;
        }
        .notice-card:hover { box-shadow: var(--shadow-md); }
        .notice-card .notice-icon {
            width: 44px; height: 44px;
            border-radius: 50%;
            background: var(--secondary-light);
            color: var(--secondary);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .notice-card h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .notice-card p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary); }
        .faq-question {
            width: 100%; display: flex; align-items: center; justify-content: space-between;
            padding: 18px 24px;
            background: none; border: none;
            font-size: 1rem; font-weight: 600; color: var(--text-primary);
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { color: var(--primary); font-size: 0.9rem; transition: var(--transition); }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 320px;
            padding: 0 24px 18px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block h2 { color: #fff; font-size: 1.8rem; margin-bottom: 10px; position: relative; }
        .cta-block p { color: rgba(255,255,255,0.85); max-width: 520px; margin: 0 auto 24px; position: relative; }
        .cta-block .btn-cta {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 36px;
            background: #fff;
            color: var(--primary);
            border-radius: 999px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            position: relative;
        }
        .cta-block .btn-cta:hover { transform: translateY(-2px); box-shadow: var(--shadow-xl); color: var(--primary-dark); }
        .cta-block .btn-cta-outline {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
            border-radius: 999px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            position: relative;
            margin-left: 12px;
        }
        .cta-block .btn-cta-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer);
            color: var(--text-footer);
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .site-footer .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .site-logo { color: var(--text-white); margin-bottom: 12px; }
        .footer-brand .site-logo i { color: var(--primary); }
        .footer-brand .site-logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand p { font-size: 0.9rem; color: var(--text-footer); max-width: 320px; line-height: 1.7; }
        .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a { color: var(--text-footer); font-size: 0.85rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
        .footer-col ul li a:hover { color: var(--primary); }
        .footer-col ul li span { color: var(--text-footer); font-size: 0.85rem; display: inline-flex; align-items: center; gap: 6px; }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding-top: 20px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px; height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: var(--text-footer);
            display: flex; align-items: center; justify-content: center;
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .footer-social a:hover { background: var(--primary); color: #fff; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
            .page-banner h1 { font-size: 2.4rem; }
        }

        @media (max-width: 768px) {
            :root { --header-h: 64px; }
            body { padding-top: var(--header-h); }
            .nav-list { display: none; }
            .nav-list.open {
                display: flex; flex-direction: column;
                position: absolute; top: var(--header-h); left: 0; right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                border-bottom: 1px solid var(--border-color);
                padding: 12px 20px;
                gap: 4px;
                box-shadow: var(--shadow-md);
            }
            .nav-list.open li a { display: block; padding: 10px 16px; border-radius: var(--radius-sm); }
            .mobile-toggle { display: block; }
            .header-search input { width: 100px; }
            .btn-header-cta span { display: none; }
            .page-banner { padding: 56px 0 48px; min-height: 200px; }
            .page-banner h1 { font-size: 1.8rem; }
            .page-banner p { font-size: 0.95rem; }
            .section-block { padding: 48px 0; }
            .section-title { margin-bottom: 32px; }
            .section-title h2 { font-size: 1.5rem; }
            .step-item { flex-direction: column; align-items: flex-start; }
            .step-img { width: 100%; height: 120px; margin-top: 8px; }
            .step-img img { object-fit: cover; width: 100%; }
            .cta-block { padding: 40px 24px; }
            .cta-block h2 { font-size: 1.4rem; }
            .cta-block .btn-cta-outline { margin-left: 0; margin-top: 12px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            .method-card { padding: 24px 16px; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .header-inner { padding: 0 16px; gap: 8px; }
            .header-search input { width: 80px; }
            .page-banner h1 { font-size: 1.5rem; }
            .page-banner .banner-badge { font-size: 0.7rem; padding: 3px 12px; }
            .section-block { padding: 36px 0; }
            .cta-block { padding: 32px 16px; border-radius: var(--radius-md); }
            .cta-block .btn-cta, .cta-block .btn-cta-outline { width: 100%; justify-content: center; }
            .faq-question { padding: 14px 16px; font-size: 0.9rem; }
            .faq-answer { padding: 0 16px; font-size: 0.85rem; }
            .faq-item.active .faq-answer { padding: 0 16px 14px; }
            .notice-card { padding: 20px 16px; }
            .step-item { padding: 18px 16px; }
        }

        @media (max-width: 480px) {
            .header-search { display: none; }
            .btn-header-cta { padding: 8px 16px; font-size: 0.8rem; }
            .page-banner h1 { font-size: 1.3rem; }
            .page-banner p { font-size: 0.85rem; }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mb-1 { margin-bottom: 8px; }
        .mb-2 { margin-bottom: 16px; }
        .gap-1 { gap: 8px; }
        .gap-2 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .rounded-full { border-radius: 999px; }
        .tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
        }
        .tag.secondary { background: var(--secondary-light); color: var(--secondary); }
        .tag.blue { background: #e3f2fd; color: var(--accent-blue); }