/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #d4a843;
            --primary-dark: #b8922e;
            --primary-light: #e8c66a;
            --secondary: #e85d3a;
            --secondary-dark: #d04a2a;
            --bg-dark: #0b1120;
            --bg-card: #121b2e;
            --bg-card-hover: #182542;
            --bg-section: #0f172a;
            --bg-section-alt: #0d1526;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: rgba(212, 168, 67, 0.15);
            --border-light: rgba(255, 255, 255, 0.06);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 40px rgba(212, 168, 67, 0.1);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-h: 76px;
        }

        /* ===== 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: var(--bg-dark);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 4rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.6rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--primary);
            margin: 12px auto 0;
            border-radius: 2px;
        }
        .section-title p {
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            color: var(--text-muted);
        }
        .text-center {
            text-align: center;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .mb-3 {
            margin-bottom: 1.5rem;
        }
        .mb-4 {
            margin-bottom: 2rem;
        }
        .mb-5 {
            margin-bottom: 3rem;
        }
        .mt-4 {
            margin-top: 2rem;
        }
        .gap-3 {
            gap: 1.5rem;
        }
        .gap-4 {
            gap: 2rem;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #0b1120;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #0b1120;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.2);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border-color: transparent;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(11, 17, 32, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            color: var(--text-primary);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.92rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(212, 168, 67, 0.1);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
            padding: 0 14px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.08);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .search-box input {
            background: none;
            padding: 8px 10px;
            color: var(--text-primary);
            width: 140px;
            font-size: 0.9rem;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .nav-cta {
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #0b1120;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            color: #0b1120;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(212, 168, 67, 0.3);
        }
        .menu-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text-primary);
            padding: 6px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, #0b1120 0%, #162044 50%, #0b1120 100%);
            overflow: hidden;
            padding-top: var(--header-h);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            z-index: 0;
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% {
                transform: scale(1);
            }
            100% {
                transform: scale(1.08);
            }
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(212, 168, 67, 0.06) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 50%, rgba(232, 93, 58, 0.04) 0%, transparent 70%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 100px;
            background: rgba(212, 168, 67, 0.12);
            border: 1px solid rgba(212, 168, 67, 0.2);
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero h1 {
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border-light);
        }
        .hero-stat h3 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .hero-stat h3 span {
            color: var(--primary);
        }
        .hero-stat p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 板块通用 ===== */
        .section-dark {
            background: var(--bg-section);
        }
        .section-alt {
            background: var(--bg-section-alt);
        }

        /* ===== 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-lg);
            position: relative;
        }
        .intro-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            transition: var(--transition);
        }
        .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 17, 32, 0.4), transparent);
        }
        .intro-text h2 {
            margin-bottom: 16px;
        }
        .intro-text p {
            margin-bottom: 16px;
        }
        .intro-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .intro-tags span {
            padding: 6px 16px;
            border-radius: 100px;
            background: rgba(212, 168, 67, 0.1);
            border: 1px solid rgba(212, 168, 67, 0.15);
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 500;
        }

        /* ===== 分类卡片 ===== */
        .cats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .cat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            border-color: rgba(212, 168, 67, 0.2);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .cat-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .cat-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .cat-card:hover .cat-card-img img {
            transform: scale(1.06);
        }
        .cat-card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 17, 32, 0.7), transparent);
        }
        .cat-card-body {
            padding: 24px;
        }
        .cat-card-body h3 {
            margin-bottom: 8px;
            font-size: 1.2rem;
        }
        .cat-card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .cat-card-body .btn {
            width: 100%;
        }

        /* ===== 资讯列表 ===== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .post-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .post-card:hover {
            transform: translateY(-4px);
            border-color: rgba(212, 168, 67, 0.15);
            box-shadow: var(--shadow-md);
            background: var(--bg-card-hover);
        }
        .post-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .post-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .post-card:hover .post-card-img img {
            transform: scale(1.05);
        }
        .post-card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 100px;
            background: rgba(212, 168, 67, 0.9);
            color: #0b1120;
            font-size: 0.75rem;
            font-weight: 700;
            z-index: 2;
        }
        .post-card-body {
            padding: 20px;
        }
        .post-card-body .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .post-card-body .meta i {
            margin-right: 4px;
        }
        .post-card-body h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0;
        }
        .post-card-body .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
        }
        .post-card-body .read-more i {
            font-size: 0.75rem;
            transition: var(--transition);
        }
        .post-card-body .read-more:hover i {
            transform: translateX(4px);
        }
        .empty-posts {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-light);
        }
        .empty-posts i {
            font-size: 2.4rem;
            margin-bottom: 16px;
            opacity: 0.4;
        }
        .empty-posts p {
            font-size: 1rem;
            color: var(--text-muted);
        }

        /* ===== 数据/流程区块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: rgba(212, 168, 67, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stat-item .number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .stat-item .number span {
            color: var(--primary);
        }
        .stat-item .label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            position: relative;
            transition: var(--transition);
        }
        .step-card:hover {
            border-color: rgba(212, 168, 67, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card::before {
            counter-increment: step;
            content: '0' counter(step);
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 2.8rem;
            font-weight: 900;
            color: rgba(212, 168, 67, 0.08);
            line-height: 1;
        }
        .step-card .icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: inline-block;
            padding: 16px;
            border-radius: 50%;
            background: rgba(212, 168, 67, 0.1);
        }
        .step-card h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(212, 168, 67, 0.12);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--primary);
            transition: var(--transition);
            font-size: 1rem;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item[open] summary {
            color: var(--primary);
        }
        .faq-item .answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, rgba(212, 168, 67, 0.08), rgba(232, 93, 58, 0.06));
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            border: 1px solid rgba(212, 168, 67, 0.12);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 168, 67, 0.05), transparent);
            pointer-events: none;
        }
        .cta-block h2 {
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 500px;
            margin: 0 auto 28px;
        }
        .cta-block .btn {
            margin: 0 6px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-section);
            border-top: 1px solid var(--border-light);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #0b1120;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .intro-image img {
                height: 300px;
            }
            .cats-grid,
            .posts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(11, 17, 32, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.active {
                background: rgba(212, 168, 67, 0.12);
            }
            .menu-toggle {
                display: block;
            }
            .search-box {
                display: none;
            }
            .search-box.mobile-show {
                display: flex;
                width: 100%;
                margin: 8px 0;
            }
            .nav-right .btn-ghost {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .section-pad {
                padding: 48px 0;
            }
            .hero {
                min-height: auto;
                padding: 100px 0 60px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 32px;
                padding-top: 24px;
            }
            .hero-stat h3 {
                font-size: 1.5rem;
            }
            .cats-grid,
            .posts-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block .btn {
                width: 100%;
                margin: 6px 0;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .intro-image img {
                height: 220px;
            }
            .stat-item {
                padding: 20px 16px;
            }
            .stat-item .number {
                font-size: 1.6rem;
            }
            .step-card {
                padding: 24px 16px;
            }
            .step-card::before {
                font-size: 2rem;
            }
            .nav-right .nav-cta {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-stat h3 {
                font-size: 1.2rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
            .nav-right .btn-ghost {
                display: none;
            }
            .nav-right .nav-cta {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .search-box input {
                width: 80px;
            }
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--text-muted);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }

        /* ===== 选中 ===== */
        ::selection {
            background: var(--primary);
            color: #0b1120;
        }

        /* ===== 骨架屏淡入 ===== */
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in-delay-1 {
            animation-delay: 0.1s;
        }
        .fade-in-delay-2 {
            animation-delay: 0.2s;
        }
        .fade-in-delay-3 {
            animation-delay: 0.3s;
        }
        .fade-in-delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e84c3d;
            --primary-dark: #c0392b;
            --primary-light: #f1948a;
            --primary-gradient: linear-gradient(135deg, #e84c3d 0%, #c0392b 100%);
            --secondary: #f39c12;
            --secondary-light: #fdebd0;
            --accent: #2ecc71;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1e1e2f;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888a0;
            --text-white: #ffffff;
            --border-color: #e8e8f0;
            --border-light: #f0f0f5;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.07);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.10);
            --shadow-hover: 0 16px 48px rgba(232,76,61,0.15);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 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: var(--bg-body);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }
        .logo i { color: var(--primary); font-size: 26px; }
        .logo span { color: var(--primary); }
        .logo:hover { color: var(--text-primary); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--primary); background: rgba(232,76,61,0.06); }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(232,76,61,0.10);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary-gradient);
            border-radius: 4px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border-radius: 40px;
            padding: 0 16px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(232,76,61,0.10); }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-primary);
            width: 140px;
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-search button {
            background: none;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            padding: 4px 0 4px 8px;
            font-size: 15px;
        }
        .nav-search button:hover { color: var(--primary); }
        .btn-primary, .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            background: var(--primary-gradient);
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(232,76,61,0.25);
        }
        .btn-primary:hover, .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232,76,61,0.30);
            color: var(--text-white);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            border: 1.5px solid var(--border-color);
            background: transparent;
            color: var(--text-secondary);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); background: rgba(232,76,61,0.04); }
        .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 8px; }
        .hamburger span { width: 24px; height: 2.5px; background: var(--text-primary); border-radius: 4px; transition: var(--transition); }
        @media (max-width: 900px) {
            .nav-list { display: none; position: absolute; top: var(--header-height); left: 0; width: 100%; background: var(--bg-white); flex-direction: column; padding: 16px 24px 24px; border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow-md); }
            .nav-list.open { display: flex; }
            .nav-list a { padding: 12px 16px; width: 100%; }
            .nav-list a.active::after { display: none; }
            .nav-search { display: none; }
            .nav-actions .btn-outline { display: none; }
            .hamburger { display: flex; }
        }
        @media (max-width: 520px) {
            .logo { font-size: 18px; }
            .logo i { font-size: 20px; }
            .btn-cta { padding: 8px 16px; font-size: 13px; }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            padding: 140px 0 60px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            min-height: 260px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30,30,47,0.85) 0%, rgba(232,76,61,0.40) 100%);
        }
        .page-banner .container { position: relative; z-index: 2; text-align: center; }
        .page-banner h1 {
            font-size: 36px;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.7);
        }
        .breadcrumb a { color: rgba(255,255,255,0.8); }
        .breadcrumb a:hover { color: var(--text-white); }
        .breadcrumb span { color: rgba(255,255,255,0.5); }
        @media (max-width: 768px) {
            .page-banner { padding: 120px 0 40px; min-height: 200px; }
            .page-banner h1 { font-size: 26px; }
        }

        /* ===== Article Detail ===== */
        .article-detail {
            padding: 60px 0 80px;
        }
        .article-detail .container {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-main { min-width: 0; }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-light);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-meta .meta-item i { font-size: 15px; color: var(--primary-light); }
        .article-meta .category-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            background: rgba(232,76,61,0.10);
            color: var(--primary);
        }
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-body p { margin-bottom: 20px; }
        .article-body h2 { font-size: 24px; margin: 40px 0 16px; color: var(--text-primary); }
        .article-body h3 { font-size: 20px; margin: 32px 0 12px; color: var(--text-primary); }
        .article-body ul, .article-body ol { margin: 16px 0 24px; padding-left: 24px; }
        .article-body ul li { list-style: disc; margin-bottom: 8px; }
        .article-body ol li { list-style: decimal; margin-bottom: 8px; }
        .article-body img { margin: 24px 0; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
        .article-body blockquote {
            margin: 24px 0;
            padding: 20px 24px;
            background: rgba(232,76,61,0.04);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-body a { color: var(--primary); font-weight: 500; text-decoration: underline; text-underline-offset: 2px; }
        .article-body a:hover { color: var(--primary-dark); }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 {
            font-size: 18px;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .sidebar-list a i { margin-top: 3px; color: var(--primary); font-size: 13px; }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 13px;
            background: var(--bg-body);
            color: var(--text-secondary);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sidebar-tags a:hover { background: var(--primary); color: var(--text-white); border-color: var(--primary); }
        .sidebar-cta {
            text-align: center;
            padding: 32px 24px;
        }
        .sidebar-cta h4 { font-size: 20px; margin-bottom: 8px; }
        .sidebar-cta p { font-size: 14px; color: var(--text-muted); margin-bottom: 20px; }
        .sidebar-cta .btn-primary { width: 100%; justify-content: center; }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }
        .related-section .section-title {
            font-size: 28px;
            text-align: center;
            margin-bottom: 40px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
        .related-card .card-body { padding: 20px; }
        .related-card .card-body h4 { font-size: 16px; margin-bottom: 8px; }
        .related-card .card-body h4 a { color: var(--text-primary); }
        .related-card .card-body h4 a:hover { color: var(--primary); }
        .related-card .card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== Error State ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-box i { font-size: 64px; color: var(--primary-light); margin-bottom: 24px; }
        .not-found-box h2 { font-size: 28px; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
        .not-found-box .btn-primary { display: inline-flex; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 60px 0 0;
            color: rgba(255,255,255,0.7);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo { color: var(--text-white); margin-bottom: 16px; }
        .footer-brand p { font-size: 14px; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { font-size: 16px; color: var(--text-white); margin-bottom: 16px; font-weight: 600; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 14px; display: flex; align-items: center; gap: 8px; }
        .footer-col ul li a:hover { 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: 13px;
        }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.6);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: var(--text-white); }
        @media (max-width: 900px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Responsive Article ===== */
        @media (max-width: 1024px) {
            .article-detail .container { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
        }
        @media (max-width: 768px) {
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr 1fr; }
            .article-body { font-size: 15px; }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
            .article-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
            .page-banner h1 { font-size: 22px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* roulang page: category1 */
/* ===== CSS Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: #1e293b;
            background: #f8fafc;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #1d4ed8;
        }
        a:focus-visible {
            outline: 3px solid #2563eb;
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-bg: #eff6ff;
            --secondary: #7c3aed;
            --secondary-light: #a78bfa;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --success: #10b981;
            --danger: #ef4444;
            --dark: #0f172a;
            --dark-2: #1e293b;
            --text: #1e293b;
            --text-weak: #64748b;
            --text-light: #94a3b8;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-gray: #f1f5f9;
            --bg-dark: #0f172a;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius: 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: 0 4px 16px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-xs: 0.75rem;
            --font-sm: 0.875rem;
            --font-base: 1rem;
            --font-md: 1.125rem;
            --font-lg: 1.25rem;
            --font-xl: 1.5rem;
            --font-2xl: 2rem;
            --font-3xl: 2.75rem;
            --container: 1200px;
            --header-h: 72px;
        }

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

        /* ===== Header / Nav ===== */
        .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(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--dark);
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .logo span {
            color: var(--primary);
        }
        .logo:hover {
            color: var(--dark);
            opacity: 0.9;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-list a {
            display: block;
            padding: 6px 18px;
            font-size: var(--font-sm);
            font-weight: 500;
            color: var(--text-weak);
            border-radius: 30px;
            transition: background 0.25s ease, color 0.25s ease;
            letter-spacing: 0.3px;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-list a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 2px 10px rgba(37, 99, 235, 0.3);
        }
        .nav-list a.active:hover {
            background: var(--primary-dark);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-toggle {
            background: none;
            border: none;
            font-size: 1.2rem;
            color: var(--text-weak);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 30px;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .search-toggle:hover {
            background: var(--bg-gray);
            color: var(--text);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 8px 22px;
            font-size: var(--font-sm);
            font-weight: 600;
            border-radius: 30px;
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--border);
            color: var(--text);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-bg);
            transform: translateY(-1px);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
            color: #fff;
        }
        .btn-primary i {
            font-size: 0.9rem;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
        }
        .mobile-toggle:hover {
            background: var(--bg-gray);
        }

        @media (max-width: 768px) {
            .nav-list {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 20px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                max-height: 70vh;
                overflow-y: auto;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                padding: 10px 16px;
                font-size: var(--font-base);
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .mobile-toggle {
                display: block;
            }
            .header-actions .btn-outline,
            .header-actions .btn-primary span {
                display: none;
            }
            .header-actions .btn-primary i {
                margin: 0;
            }
            .header-actions .btn-primary {
                padding: 8px 14px;
            }
        }
        @media (max-width: 480px) {
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .header-actions .search-toggle {
                font-size: 1rem;
                padding: 4px 8px;
            }
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            padding: calc(var(--header-h) + 40px) 0 60px;
            background: var(--dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 40%, rgba(37, 99, 235, 0.6) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: var(--font-3xl);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }
        .page-hero p {
            font-size: var(--font-md);
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .page-hero .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: var(--font-sm);
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }
        .page-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .page-hero .breadcrumb a:hover {
            color: #fff;
        }
        .page-hero .breadcrumb span {
            color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: calc(var(--header-h) + 24px) 0 40px;
                min-height: 240px;
            }
            .page-hero h1 {
                font-size: var(--font-2xl);
            }
            .page-hero p {
                font-size: var(--font-base);
            }
        }
        @media (max-width: 480px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-gray);
        }
        .section-white {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-title {
            font-size: var(--font-2xl);
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-sub {
            font-size: var(--font-md);
            color: var(--text-weak);
            max-width: 640px;
            margin-bottom: 44px;
            line-height: 1.8;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-dark .section-sub {
            color: rgba(255, 255, 255, 0.7);
        }
        .text-center {
            text-align: center;
        }
        .text-center .section-sub {
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: var(--font-xl);
            }
            .section-sub {
                font-size: var(--font-base);
                margin-bottom: 32px;
            }
        }

        /* ===== Guide Steps ===== */
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
            margin-top: 12px;
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            text-align: center;
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .step-card h3 {
            font-size: var(--font-lg);
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--dark);
        }
        .step-card p {
            font-size: var(--font-sm);
            color: var(--text-weak);
            line-height: 1.7;
        }
        .step-card .step-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 14px;
            display: block;
        }

        @media (max-width: 600px) {
            .guide-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== Content Grid ===== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }
        .content-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .content-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--bg-gray);
        }
        .content-card .card-body {
            padding: 20px 22px 24px;
        }
        .content-card .card-tag {
            display: inline-block;
            font-size: var(--font-xs);
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-bg);
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .content-card h3 {
            font-size: var(--font-md);
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }
        .content-card p {
            font-size: var(--font-sm);
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .content-card .card-meta {
            font-size: var(--font-xs);
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .content-card .card-meta i {
            margin-right: 4px;
        }

        @media (max-width: 480px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: box-shadow 0.25s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 22px;
            font-weight: 600;
            font-size: var(--font-base);
            color: var(--dark);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background 0.2s ease;
            gap: 12px;
        }
        .faq-question:hover {
            background: var(--bg-gray);
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--text-light);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: var(--font-sm);
            color: var(--text-weak);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--dark);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 30%, rgba(37, 99, 235, 0.7) 100%);
            z-index: 1;
        }
        .cta-block>* {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: var(--font-2xl);
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: var(--font-md);
            color: rgba(255, 255, 255, 0.85);
            max-width: 540px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-block .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-block .btn-primary {
            background: #fff;
            color: var(--dark);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }
        .cta-block .btn-primary:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 28px rgba(37, 99, 235, 0.4);
            transform: translateY(-2px);
        }
        .cta-block .btn-outline-light {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
        }
        .cta-block .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-block {
                padding: 40px 24px;
                border-radius: var(--radius);
            }
            .cta-block h2 {
                font-size: var(--font-xl);
            }
            .cta-block p {
                font-size: var(--font-base);
            }
        }

        /* ===== Tips / 提示条 ===== */
        .tips-block {
            background: var(--primary-bg);
            border-left: 4px solid var(--primary);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
        }
        .tips-block i {
            color: var(--primary);
            margin-right: 8px;
        }
        .tips-block p {
            font-size: var(--font-sm);
            color: var(--dark-2);
            line-height: 1.8;
        }

        /* ===== Footer (复用) ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            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 .logo {
            color: #fff;
            font-size: 1.4rem;
            margin-bottom: 14px;
            display: inline-flex;
        }
        .footer-brand .logo i {
            color: var(--primary-light);
        }
        .footer-brand .logo span {
            color: var(--primary-light);
        }
        .footer-brand p {
            font-size: var(--font-sm);
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-top: 8px;
        }
        .footer-col h4 {
            font-size: var(--font-base);
            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: var(--font-sm);
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-col ul li a i {
            width: 20px;
            margin-right: 6px;
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
            font-size: var(--font-sm);
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-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: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 20px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== 图片卡片装饰 ===== */
        .img-card {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .img-card:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-lg);
        }
        .img-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0 auto 16px;
        }
        .divider-left {
            margin: 0 0 16px;
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            :root {
                --font-3xl: 2rem;
                --font-2xl: 1.6rem;
                --font-xl: 1.25rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .header-actions .btn-outline {
                display: none;
            }
        }

        /* ===== 图片与文字环绕 ===== */
        .text-image-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .text-image-block .text-content h3 {
            font-size: var(--font-xl);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--dark);
        }
        .text-image-block .text-content p {
            color: var(--text-weak);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .text-image-block .image-wrap {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .text-image-block .image-wrap img {
            width: 100%;
            height: 300px;
            object-fit: cover;
        }
        @media (max-width: 768px) {
            .text-image-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .text-image-block .image-wrap img {
                height: 220px;
            }
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }
        .stat-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 16px;
            text-align: center;
            border: 1px solid var(--border);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: var(--font-sm);
            color: var(--text-weak);
            margin-top: 6px;
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #fadadd;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-light: #fdf0e0;
            --bg: #fafafa;
            --bg-alt: #f1f5f9;
            --bg-dark: #0d1b2a;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f0f0f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 16px 48px rgba(230, 57, 70, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container: 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);
            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-dark);
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            transition: var(--transition);
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
        }
        .logo span {
            color: var(--primary);
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--text);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-xs);
            color: var(--text);
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .nav-list a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
        }
        .nav-list a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-actions .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border-radius: 50px;
            padding: 0 16px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .nav-actions .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.1);
        }
        .nav-actions .search-box input {
            padding: 8px 0;
            width: 160px;
            background: transparent;
            color: var(--text);
            font-size: 14px;
        }
        .nav-actions .search-box input::placeholder {
            color: var(--text-light);
        }
        .nav-actions .search-box button {
            color: var(--text-light);
            padding: 8px 4px;
            transition: var(--transition);
        }
        .nav-actions .search-box button:hover {
            color: var(--primary);
        }

        .btn-nav {
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            border: 1px solid var(--border);
            color: var(--text);
            background: transparent;
        }
        .btn-nav:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-nav-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.25);
        }
        .btn-nav-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.35);
            transform: translateY(-1px);
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: none;
            border: none;
        }
        .hamburger span {
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 1024px) {
            .nav-list a {
                padding: 6px 14px;
                font-size: 14px;
            }
            .nav-actions .search-box input {
                width: 120px;
            }
        }

        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-xs);
            }
            .hamburger {
                display: flex;
            }
            .nav-actions .search-box input {
                width: 100px;
            }
            .nav-actions .btn-nav {
                padding: 6px 14px;
                font-size: 13px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 12px;
            }
            .nav-actions .search-box {
                display: none;
            }
            .nav-actions .btn-nav {
                padding: 6px 12px;
                font-size: 12px;
            }
            .logo {
                font-size: 16px;
            }
            .logo i {
                font-size: 18px;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--secondary) 0%, #0d1b2a 100%);
            padding: 80px 0 72px;
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .page-banner h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .page-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 680px;
            line-height: 1.7;
        }
        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .page-banner .breadcrumb a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 56px 0 48px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner p {
                font-size: 16px;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 26px;
            }
            .page-banner p {
                font-size: 14px;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
            line-height: 1.25;
        }
        .section-sub {
            font-size: 17px;
            color: var(--text-light);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.7;
        }
        .section-title.text-white {
            color: #fff;
        }
        .section-sub.text-white {
            color: rgba(255, 255, 255, 0.75);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-sub {
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .section-sub {
                font-size: 15px;
                margin-bottom: 32px;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 24px;
            }
            .section-sub {
                font-size: 14px;
            }
        }

        /* ===== Activity Cards Grid ===== */
        .activity-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .activity-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .activity-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .activity-card .card-img {
            height: 200px;
            background: var(--bg-alt);
            position: relative;
            overflow: hidden;
        }
        .activity-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .activity-card:hover .card-img img {
            transform: scale(1.05);
        }
        .activity-card .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
        }
        .activity-card .card-badge.hot {
            background: var(--accent);
            color: var(--text);
        }
        .activity-card .card-badge.new {
            background: #2a9d8f;
        }
        .activity-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .activity-card .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .activity-card .card-body p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .activity-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
            font-size: 13px;
            color: var(--text-light);
        }
        .activity-card .card-meta i {
            margin-right: 6px;
            color: var(--secondary-light);
        }
        .activity-card .card-meta .tag {
            background: var(--accent-light);
            color: var(--secondary);
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
        }
        .btn-card {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            border: none;
            align-self: flex-start;
            margin-top: 4px;
        }
        .btn-card:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.3);
        }
        .btn-card i {
            font-size: 13px;
            transition: var(--transition);
        }
        .btn-card:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 1024px) {
            .activity-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .activity-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .activity-card .card-img {
                height: 180px;
            }
            .activity-card .card-body h3 {
                font-size: 18px;
            }
        }

        /* ===== Features / Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-item {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            padding: 32px 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-4px);
        }
        .stat-item .num {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 24px 16px;
            }
            .stat-item .num {
                font-size: 32px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .num {
                font-size: 28px;
            }
        }

        /* ===== Process / Timeline ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            counter-reset: step;
        }
        .process-step {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .process-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 48px;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            opacity: 0.5;
        }
        .process-step .step-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-light);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .process-step h4 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .process-step {
                padding: 24px 20px;
            }
            .process-step::before {
                font-size: 36px;
                top: 16px;
                right: 18px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-q {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
            color: var(--text);
            gap: 12px;
        }
        .faq-item .faq-q:hover {
            background: var(--bg-alt);
        }
        .faq-item .faq-q i {
            color: var(--primary);
            font-size: 18px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 768px) {
            .faq-item .faq-q {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item .faq-a {
                font-size: 14px;
            }
            .faq-item.open .faq-a {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #0d1b2a 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 38px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-btns {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-cta {
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-cta-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.3);
        }
        .btn-cta-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(230, 57, 70, 0.4);
        }
        .btn-cta-outline {
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            background: transparent;
        }
        .btn-cta-outline:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .btn-cta {
                padding: 14px 28px;
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-btns {
                flex-direction: column;
                gap: 12px;
            }
            .btn-cta {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .logo span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-col ul li a i {
            margin-right: 8px;
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
            font-size: 16px;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.3);
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            z-index: 999;
            border: none;
        }
        .back-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: 0 10px 32px rgba(230, 57, 70, 0.4);
        }

        @media (max-width: 520px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 18px;
            }
        }

        /* ===== Skeleton / Loading ===== */
        .skeleton {
            background: linear-gradient(90deg, var(--border) 25%, #f5f5f5 50%, var(--border) 75%);
            background-size: 200% 100%;
            animation: shimmer 1.5s infinite;
            border-radius: var(--radius-sm);
        }
        @keyframes shimmer {
            0% {
                background-position: 200% 0;
            }
            100% {
                background-position: -200% 0;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #f5a623;
            --primary-dark: #d4891a;
            --primary-light: #fde3a7;
            --secondary: #2c3e50;
            --secondary-light: #34495e;
            --bg: #f8f9fa;
            --bg-alt: #1a1a2e;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --text-inverse: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 30px rgba(245, 166, 35, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container: 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: 1.6;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            padding-top: var(--header-h);
        }

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

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

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

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        ul {
            list-style: none;
        }

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

        /* ===== Header / Nav ===== */
        .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) saturate(180%);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            white-space: nowrap;
        }

        .logo i {
            color: var(--primary);
            font-size: 26px;
        }

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

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

        /* 导航列表 */
        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-list a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }

        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
            transition: transform var(--transition);
        }

        .nav-list a:hover {
            color: var(--text);
            background: rgba(245, 166, 35, 0.06);
        }

        .nav-list a.active {
            color: var(--primary);
            background: rgba(245, 166, 35, 0.10);
        }

        .nav-list a.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        /* 导航右侧 */
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--border-light);
            border-radius: 40px;
            padding: 0 16px;
            border: 1px solid transparent;
            transition: all var(--transition);
            width: 200px;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.08);
        }

        .search-box input {
            border: none;
            background: transparent;
            padding: 8px 10px;
            font-size: 14px;
            color: var(--text);
            width: 100%;
            outline: none;
        }

        .search-box input::placeholder {
            color: var(--text-light);
        }

        .search-box button {
            color: var(--text-light);
            font-size: 15px;
            padding: 4px;
            transition: color var(--transition);
        }

        .search-box button:hover {
            color: var(--primary);
        }

        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            background: var(--primary);
            color: #fff;
            border-radius: 40px;
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(245, 166, 35, 0.25);
        }

        .btn-header:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.35);
        }

        .btn-header i {
            font-size: 14px;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 4px;
            transition: all var(--transition);
        }

        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 72px;
            background: var(--bg-alt);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

        .page-banner .banner-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.20;
            pointer-events: none;
        }

        .page-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.88) 0%, rgba(26, 26, 46, 0.70) 100%);
            pointer-events: none;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .page-banner .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            background: rgba(245, 166, 35, 0.18);
            color: var(--primary);
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(245, 166, 35, 0.15);
        }

        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--text-inverse);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .page-banner h1 span {
            color: var(--primary);
        }

        .page-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 40px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(245, 166, 35, 0.30);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(245, 166, 35, 0.40);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.25);
            border-radius: 40px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
        }

        .btn-outline-light:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(245, 166, 35, 0.08);
            transform: translateY(-2px);
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-alt);
            color: var(--text-inverse);
        }

        .section-alt .section-title,
        .section-alt .section-sub {
            color: var(--text-inverse);
        }

        .section-alt .section-title span {
            color: var(--primary);
        }

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

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            background: rgba(245, 166, 35, 0.10);
            color: var(--primary);
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-title span {
            color: var(--primary);
        }

        .section-sub {
            font-size: 17px;
            color: var(--text-light);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-alt .section-sub {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== 会员等级 ===== */
        .level-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .level-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .level-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .level-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }

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

        .level-card .level-icon {
            font-size: 42px;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .level-card .level-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }

        .level-card .level-sub {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 16px;
        }

        .level-card .level-benefits {
            text-align: left;
            padding: 0;
        }

        .level-card .level-benefits li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            padding: 6px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .level-card .level-benefits li:last-child {
            border-bottom: none;
        }

        .level-card .level-benefits li i {
            color: var(--primary);
            font-size: 12px;
            width: 18px;
            text-align: center;
        }

        .level-card .level-tag {
            display: inline-block;
            margin-top: 16px;
            padding: 4px 16px;
            background: rgba(245, 166, 35, 0.10);
            color: var(--primary);
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
        }

        .level-card.featured {
            border-color: var(--primary);
            box-shadow: var(--shadow-glow);
            transform: scale(1.02);
        }

        .level-card.featured:hover {
            transform: scale(1.02) translateY(-6px);
        }

        .level-card.featured .level-tag {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 专属特权 ===== */
        .privilege-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .privilege-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            display: flex;
            gap: 18px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .privilege-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }

        .privilege-card .p-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            background: rgba(245, 166, 35, 0.10);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            transition: background var(--transition);
        }

        .privilege-card:hover .p-icon {
            background: rgba(245, 166, 35, 0.18);
        }

        .privilege-card .p-info h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .privilege-card .p-info p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== 会员活动 ===== */
        .activity-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .activity-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .activity-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }

        .activity-card .ac-thumb {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .activity-card .ac-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .activity-card .ac-thumb .ac-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            background: var(--primary);
            color: #fff;
            border-radius: 40px;
            font-size: 12px;
            font-weight: 600;
        }

        .activity-card .ac-body {
            padding: 20px 22px 24px;
        }

        .activity-card .ac-body .ac-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 8px;
        }

        .activity-card .ac-body .ac-meta i {
            margin-right: 4px;
        }

        .activity-card .ac-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .activity-card .ac-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .activity-card .ac-body .ac-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            transition: gap var(--transition);
        }

        .activity-card .ac-body .ac-link:hover {
            gap: 10px;
        }

        /* ===== 加入CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-alt);
            position: relative;
            overflow: hidden;
        }

        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.10;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-inverse);
            margin-bottom: 12px;
        }

        .cta-section h2 span {
            color: var(--primary);
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.70);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

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

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-item .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
            gap: 12px;
        }

        .faq-item .faq-q:hover {
            background: rgba(245, 166, 35, 0.04);
        }

        .faq-item .faq-q i {
            font-size: 14px;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }

        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-alt);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .site-footer .footer-brand .logo {
            font-size: 20px;
            color: #fff;
            margin-bottom: 12px;
            display: inline-flex;
        }

        .site-footer .footer-brand .logo span {
            color: var(--primary);
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }

        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }

        .site-footer .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--primary);
        }

        .site-footer .footer-col ul li a i {
            font-size: 13px;
            width: 16px;
        }

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.40);
            flex-wrap: wrap;
            gap: 16px;
        }

        .site-footer .footer-social {
            display: flex;
            gap: 12px;
        }

        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            color: rgba(255, 255, 255, 0.50);
            font-size: 16px;
            transition: all var(--transition);
        }

        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .level-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

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

        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
            }

            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.10);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                border-bottom: 1px solid var(--border);
                align-items: stretch;
                z-index: 999;
            }

            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
            }

            .nav-list a {
                padding: 12px 16px;
                font-size: 16px;
                justify-content: center;
            }

            .nav-list a::after {
                bottom: 2px;
            }

            .menu-toggle {
                display: flex;
            }

            .search-box {
                width: 140px;
            }

            .btn-header .btn-text {
                display: none;
            }

            .page-banner {
                padding: 60px 0 52px;
                min-height: 260px;
            }

            .page-banner h1 {
                font-size: 30px;
            }

            .page-banner p {
                font-size: 16px;
            }

            .section {
                padding: 56px 0;
            }

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

            .section-sub {
                font-size: 15px;
            }

            .level-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .level-card {
                padding: 24px 16px 20px;
            }

            .level-card.featured {
                transform: none;
            }

            .level-card.featured:hover {
                transform: translateY(-4px);
            }

            .privilege-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .activity-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

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

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

            .page-banner h1 {
                font-size: 24px;
            }

            .section-title {
                font-size: 22px;
            }

            .btn-primary,
            .btn-outline-light {
                padding: 10px 22px;
                font-size: 14px;
            }

            .search-box {
                width: 100px;
            }

            .nav-actions .btn-header {
                padding: 8px 14px;
            }
        }