/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2d5a8e;
            --primary-dark: #0f1a2e;
            --secondary: #f0a500;
            --secondary-hover: #d49400;
            --secondary-light: #fff3d6;
            --bg: #f5f7fa;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #ffffff;
            --text-muted: #9ca3af;
            --border: #e5e7eb;
            --border-light: #f0f0f5;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0,0,0,0.07);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.13);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary); }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(15,26,46,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .header.scrolled {
            background: rgba(15,26,46,0.98);
            box-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100%;
            position: relative;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-left, .nav-right {
            flex: 1;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-left { justify-content: flex-start; }
        .nav-right { justify-content: flex-end; }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255,255,255,0.75);
            border-radius: 8px;
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255,255,255,0.08);
        }
        .nav-link.active {
            color: var(--secondary);
            background: rgba(240,165,0,0.12);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--secondary);
            border-radius: 4px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            padding: 0 28px;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .logo:hover { color: var(--secondary); }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--secondary), #ff6b35);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            box-shadow: 0 4px 12px rgba(240,165,0,0.3);
        }
        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 22px;
            border-radius: 8px;
            transition: var(--transition);
            z-index: 1001;
        }
        .menu-toggle:hover { background: rgba(255,255,255,0.1); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.5;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg { transform: scale(1); }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,46,0.85) 0%, rgba(30,58,95,0.7) 50%, rgba(15,26,46,0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            animation: fadeUp 1s ease;
        }
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(40px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 20px;
            background: rgba(240,165,0,0.18);
            border: 1px solid rgba(240,165,0,0.25);
            border-radius: 50px;
            color: var(--secondary);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 28px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i { font-size: 14px; }
        .hero-title {
            font-size: clamp(2.6rem, 7vw, 4.8rem);
            font-weight: 900;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 24px;
            text-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }
        .hero-title span {
            background: linear-gradient(135deg, var(--secondary), #ff6b35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: clamp(1.05rem, 2vw, 1.3rem);
            color: rgba(255,255,255,0.75);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 700;
            border-radius: 50px;
            transition: var(--transition);
            letter-spacing: 0.5px;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--secondary), #ff6b35);
            color: #fff;
            box-shadow: 0 8px 30px rgba(240,165,0,0.35);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(240,165,0,0.45);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border-color: rgba(255,255,255,0.3);
            color: #fff;
        }
        .btn-outline:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 50px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
            color: #fff;
        }
        .hero-stat-num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--secondary);
        }
        .hero-stat-label {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            margin-top: 4px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-dark .section-title,
        .section-dark .section-sub { color: #fff; }
        .section-light {
            background: var(--bg-white);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            background: var(--secondary-light);
            border-radius: 50px;
            color: var(--secondary-hover);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .section-tag i { font-size: 12px; }
        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-dark .section-sub { color: rgba(255,255,255,0.65); }

        /* ===== 优势卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--secondary);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: #fff;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }
        .feature-icon.gold { background: linear-gradient(135deg, var(--secondary), #ff6b35); }
        .feature-icon.green { background: linear-gradient(135deg, #10b981, #059669); }
        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--text);
        }
        .feature-card p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== 游戏分类 ===== */
        .games-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .game-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .game-card-img {
            position: relative;
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .game-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .game-card:hover .game-card-img img { transform: scale(1.08); }
        .game-card-body {
            padding: 20px 22px 24px;
        }
        .game-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .game-card-body p {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .game-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 50px;
            background: var(--secondary-light);
            color: var(--secondary-hover);
        }
        .tag.blue { background: #e0edff; color: #2563eb; }
        .tag.green { background: #d1fae5; color: #059669; }
        .tag.purple { background: #ede9fe; color: #7c3aed; }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 22px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .news-item:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--secondary);
        }
        .news-item .news-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            flex-shrink: 0;
        }
        .news-item .news-info { flex: 1; min-width: 0; }
        .news-item .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-title a:hover { color: var(--secondary); }
        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-item .news-meta span { display: flex; align-items: center; gap: 4px; }
        .news-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 15px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px dashed var(--border);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius);
            border: 1px solid rgba(255,255,255,0.08);
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.08);
            transform: translateY(-4px);
        }
        .stat-card .stat-num {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--secondary);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 15px;
            color: rgba(255,255,255,0.65);
            margin-top: 8px;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--secondary), var(--primary-light), var(--secondary));
            opacity: 0.2;
        }
        .step-card {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            position: relative;
            z-index: 1;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, var(--secondary), #ff6b35);
            margin: 0 auto 16px;
            box-shadow: 0 6px 20px rgba(240,165,0,0.3);
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* ===== 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: var(--secondary);
            box-shadow: var(--shadow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--secondary); }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-item.active .faq-answer {
            padding: 0 24px 18px;
            max-height: 300px;
        }
        .faq-answer p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255,255,255,0.7);
            font-size: 1.05rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-content .btn-primary {
            font-size: 18px;
            padding: 16px 44px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 28px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .logo {
            padding: 0;
            margin-bottom: 14px;
            font-size: 20px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255,255,255,0.55);
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-socials {
            display: flex;
            gap: 12px;
        }
        .footer-socials a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.5);
            font-size: 15px;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            :root { --header-h: 62px; }
            .header-inner { padding: 0 16px; }
            .menu-toggle { display: flex; }
            .nav-left, .nav-right {
                display: none;
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(15,26,46,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid rgba(255,255,255,0.06);
                box-shadow: 0 20px 40px rgba(0,0,0,0.3);
            }
            .nav-left { justify-content: center; }
            .nav-right { justify-content: center; }
            .nav-left.open, .nav-right.open { display: flex; }
            .nav-link {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 16px;
            }
            .nav-link.active::after { display: none; }
            .logo {
                font-size: 18px;
                padding: 0 12px;
            }
            .logo-icon { width: 30px; height: 30px; font-size: 15px; }

            .hero { min-height: 90vh; padding: 100px 16px 60px; }
            .hero-stats { gap: 24px; }
            .hero-stat-num { font-size: 1.6rem; }

            .section { padding: 56px 0; }
            .section-header { margin-bottom: 32px; }

            .features-grid { grid-template-columns: 1fr; gap: 20px; }
            .games-grid { grid-template-columns: 1fr; gap: 20px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .steps-grid::before { display: none; }

            .news-item { flex-direction: column; align-items: flex-start; gap: 12px; padding: 16px; }
            .news-item .news-icon { width: 36px; height: 36px; font-size: 15px; }

            .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-title { font-size: 2rem; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-card { padding: 24px 12px; }
            .stat-card .stat-num { font-size: 2rem; }
            .steps-grid { grid-template-columns: 1fr; }
            .footer-top { grid-template-columns: 1fr; }
            .section-title { font-size: 1.5rem; }
        }

        @media (min-width: 769px) {
            .nav-left, .nav-right { display: flex !important; }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--secondary); }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e8542e;
            --primary-dark: #d1441f;
            --primary-light: #f06e4a;
            --primary-bg: #fef5f2;
            --secondary: #2b3d4f;
            --secondary-light: #3d546b;
            --accent: #f5a623;
            --accent-dark: #d48f1a;
            --bg-body: #f9fafb;
            --bg-white: #ffffff;
            --bg-light: #f3f4f6;
            --bg-dark: #1a2632;
            --text-primary: #1f2937;
            --text-secondary: #4b5563;
            --text-muted: #9ca3af;
            --text-white: #ffffff;
            --border-color: #e5e7eb;
            --border-light: #f0f0f0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 16px 60px rgba(0, 0, 0, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --nav-gap: 32px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        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;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: var(--nav-gap);
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 0;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }
        .nav-link i {
            font-size: 16px;
            opacity: 0.7;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 4px 12px rgba(232, 84, 46, 0.3);
        }
        .menu-toggle {
            display: none;
            font-size: 24px;
            color: var(--text-primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            transition: var(--transition);
            z-index: 1001;
        }
        .menu-toggle:hover {
            background: var(--border-color);
        }

        /* ===== Mobile Nav ===== */
        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .header-inner {
                padding: 0 16px;
            }
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }
            .mobile-menu-open .nav-left,
            .mobile-menu-open .nav-right {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 4px;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                padding: 20px 24px 28px;
                box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
                border-bottom: 1px solid var(--border-color);
                z-index: 999;
                animation: slideDown 0.3s ease;
            }
            .mobile-menu-open .nav-left {
                padding-bottom: 8px;
            }
            .mobile-menu-open .nav-right {
                padding-top: 8px;
                border-top: 1px solid var(--border-light);
            }
            .mobile-menu-open .nav-link {
                padding: 12px 16px;
                width: 100%;
                justify-content: center;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .mobile-menu-open .nav-link:hover {
                background: var(--primary-bg);
            }
            .mobile-menu-open .nav-link::after {
                display: none;
            }
            .mobile-menu-open .nav-link.active {
                background: var(--primary-bg);
                color: var(--primary);
            }
            @keyframes slideDown {
                from {
                    opacity: 0;
                    transform: translateY(-12px);
                }
                to {
                    opacity: 1;
                    transform: translateY(0);
                }
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .nav-left,
            .nav-right {
                gap: 20px;
            }
            .nav-link {
                font-size: 14px;
            }
            .logo {
                font-size: 20px;
            }
        }

        /* ===== Banner ===== */
        .category-banner {
            margin-top: var(--header-height);
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(26, 38, 50, 0.85), rgba(232, 84, 46, 0.7)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: var(--text-white);
            text-align: center;
            padding: 80px 24px 60px;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(232, 84, 46, 0.25), transparent 60%);
            pointer-events: none;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-body), transparent);
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }
        .banner-badge i {
            font-size: 16px;
        }
        .banner-content h1 {
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -1px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
        }
        .banner-content p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.7;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .banner-stats {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .banner-stat-item {
            text-align: center;
        }
        .banner-stat-item .num {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            display: block;
            line-height: 1.2;
        }
        .banner-stat-item .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
            letter-spacing: 0.5px;
        }
        @media (max-width: 768px) {
            .category-banner {
                min-height: 300px;
                padding: 60px 16px 40px;
            }
            .banner-content h1 {
                font-size: 30px;
            }
            .banner-content p {
                font-size: 15px;
            }
            .banner-stats {
                gap: 24px;
            }
            .banner-stat-item .num {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .banner-content h1 {
                font-size: 24px;
            }
            .banner-stats {
                gap: 16px;
            }
            .banner-stat-item .num {
                font-size: 20px;
            }
            .banner-stat-item .label {
                font-size: 12px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header .badge-line {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .section-header .badge-line::before,
        .section-header .badge-line::after {
            content: '';
            width: 40px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            opacity: 0.4;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header p {
                font-size: 14px;
            }
        }

        /* ===== 攻略分类子项 ===== */
        .sub-categories {
            padding: 60px 0 80px;
            background: var(--bg-white);
        }
        .sub-cat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
        }
        .sub-cat-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            padding: 28px 16px 24px;
            background: var(--bg-body);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
            cursor: pointer;
        }
        .sub-cat-card:hover {
            border-color: var(--primary);
            background: var(--primary-bg);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .sub-cat-card .icon {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-bg);
            border-radius: var(--radius-md);
            font-size: 26px;
            color: var(--primary);
            transition: var(--transition);
        }
        .sub-cat-card:hover .icon {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(232, 84, 46, 0.3);
        }
        .sub-cat-card .name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .sub-cat-card .count {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: -4px;
        }
        @media (max-width: 768px) {
            .sub-cat-grid {
                grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
                gap: 14px;
            }
            .sub-cat-card {
                padding: 20px 12px 18px;
            }
            .sub-cat-card .icon {
                width: 46px;
                height: 46px;
                font-size: 20px;
            }
        }
        @media (max-width: 520px) {
            .sub-cat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }

        /* ===== 最新攻略列表 ===== */
        .latest-guides {
            background: var(--bg-body);
        }
        .guide-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 24px;
        }
        .guide-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .guide-card .cover {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: var(--bg-light);
        }
        .guide-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-slow);
        }
        .guide-card:hover .cover img {
            transform: scale(1.06);
        }
        .guide-card .cover .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: 50px;
            letter-spacing: 0.3px;
            box-shadow: 0 2px 8px rgba(232, 84, 46, 0.3);
        }
        .guide-card .cover .badge-hot {
            position: absolute;
            top: 14px;
            right: 14px;
            padding: 4px 12px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: 50px;
            box-shadow: 0 2px 8px rgba(245, 166, 35, 0.3);
        }
        .guide-card .body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            transition: var(--transition);
        }
        .guide-card .body h3 a {
            color: var(--text-primary);
        }
        .guide-card .body h3 a:hover {
            color: var(--primary);
        }
        .guide-card .body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
        }
        .guide-card .meta .left {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .guide-card .meta .left i {
            margin-right: 4px;
        }
        .guide-card .meta .right a {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            transition: var(--transition);
        }
        .guide-card .meta .right a:hover {
            color: var(--primary-dark);
            gap: 6px;
        }
        @media (max-width: 768px) {
            .guide-list {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .guide-card .cover {
                height: 180px;
            }
            .guide-card .body {
                padding: 16px 18px 18px;
            }
            .guide-card .body h3 {
                font-size: 16px;
            }
        }

        /* ===== 热门攻略排行 ===== */
        .hot-guides {
            background: var(--bg-white);
        }
        .hot-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
        }
        .hot-card {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 20px;
            background: var(--bg-body);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .hot-card:hover {
            border-color: var(--primary);
            background: var(--primary-bg);
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }
        .hot-card .rank {
            font-size: 28px;
            font-weight: 800;
            color: var(--border-color);
            min-width: 36px;
            line-height: 1;
            transition: var(--transition);
        }
        .hot-card:nth-child(1) .rank {
            color: var(--primary);
        }
        .hot-card:nth-child(2) .rank {
            color: var(--accent);
        }
        .hot-card:nth-child(3) .rank {
            color: var(--secondary-light);
        }
        .hot-card .info {
            flex: 1;
            min-width: 0;
        }
        .hot-card .info h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .hot-card .info h4 a {
            color: var(--text-primary);
        }
        .hot-card .info h4 a:hover {
            color: var(--primary);
        }
        .hot-card .info .meta-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .hot-card .info .meta-tag i {
            font-size: 12px;
        }
        .hot-card .views {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        @media (max-width: 768px) {
            .hot-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .hot-card {
                padding: 14px 16px;
            }
        }

        /* ===== 攻略达人 ===== */
        .experts {
            background: var(--bg-light);
        }
        .expert-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }
        .expert-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px 26px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .expert-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .expert-card .avatar {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 32px;
            color: #fff;
            box-shadow: 0 6px 24px rgba(232, 84, 46, 0.25);
        }
        .expert-card .name {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .expert-card .title-tag {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 10px;
        }
        .expert-card .desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .expert-card .stats {
            display: flex;
            justify-content: center;
            gap: 20px;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .expert-card .stats span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .expert-card .stats i {
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .expert-grid {
                grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
                gap: 16px;
            }
            .expert-card {
                padding: 24px 16px 20px;
            }
            .expert-card .avatar {
                width: 60px;
                height: 60px;
                font-size: 26px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-body);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-color);
        }
        .faq-item.open {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
            gap: 16px;
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 768px) {
            .faq-question {
                padding: 14px 18px;
                font-size: 14px;
            }
            .faq-answer {
                font-size: 14px;
                padding: 0 18px;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary), #0f1a24), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            background-blend-mode: overlay;
            padding: 80px 24px;
            text-align: center;
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 60% 50%, rgba(232, 84, 46, 0.2), transparent 60%);
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .cta-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-btns {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(232, 84, 46, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(232, 84, 46, 0.4);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }
        .btn-outline-light:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 14px;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 16px;
            }
            .cta-content h2 {
                font-size: 26px;
            }
            .cta-content p {
                font-size: 15px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }
        .footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 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: 16px;
        }
        .footer-brand .logo .logo-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-col ul li a i {
            font-size: 14px;
            width: 18px;
            opacity: 0.6;
        }
        .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: 12px;
        }
        .footer-socials {
            display: flex;
            gap: 12px;
        }
        .footer-socials 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, 0.5);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(232, 84, 46, 0.3);
        }
        @media (max-width: 768px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 额外辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-light);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

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

        /* ===== 加载动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }
        .animate-in-d1 {
            animation-delay: 0.1s;
        }
        .animate-in-d2 {
            animation-delay: 0.2s;
        }
        .animate-in-d3 {
            animation-delay: 0.3s;
        }
        .animate-in-d4 {
            animation-delay: 0.4s;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e8542a;
            --primary-dark: #d0441e;
            --primary-light: #f06a42;
            --secondary: #f5a623;
            --secondary-dark: #e0941a;
            --accent: #2a9d8f;
            --bg-body: #f8f7f4;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-section-alt: #f0eeea;
            --text-dark: #1e1e24;
            --text-body: #3d3d4a;
            --text-light: #6b6b7a;
            --text-white: #f5f5f7;
            --border-color: #e5e3df;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-hover: 0 12px 36px rgba(232,84,42,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --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-body);
            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; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-dark); }

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

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(229,227,223,0.5);
            transition: var(--transition);
        }
        .header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: 1px;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            white-space: nowrap;
        }
        .logo:hover { color: var(--primary); }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 18px;
            font-weight: 700;
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
        }
        .nav-left { left: 24px; }
        .nav-right { right: 24px; }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link i { font-size: 14px; }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(232,84,42,0.08);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 14px rgba(232,84,42,0.3);
        }
        .nav-link.active:hover { color: #fff; background: var(--primary-dark); }
        .menu-toggle {
            display: none;
            position: absolute;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            color: var(--text-dark);
            font-size: 20px;
            background: rgba(0,0,0,0.04);
            transition: var(--transition);
            z-index: 1001;
        }
        .menu-toggle:hover { background: rgba(0,0,0,0.08); }

        /* ===== Mobile Menu ===== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 20px 24px;
            box-shadow: 0 12px 40px rgba(0,0,0,0.1);
            z-index: 999;
            border-bottom: 1px solid var(--border-color);
            transform: translateY(-10px);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }
        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu .nav-link {
            display: flex;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            width: 100%;
        }
        .mobile-menu .nav-link i { width: 22px; text-align: center; }
        .mobile-menu .nav-link.active { color: #fff; }

        /* ===== Article Banner ===== */
        .article-banner {
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 48px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #2a2a4a 100%);
            position: relative;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.55);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
        }
        .article-breadcrumb a:hover { color: var(--secondary); }
        .article-breadcrumb i { font-size: 12px; color: rgba(255,255,255,0.3); }
        .article-banner-title {
            font-size: clamp(26px, 4vw, 42px);
            color: #fff;
            line-height: 1.25;
            max-width: 860px;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            align-items: center;
            color: rgba(255,255,255,0.65);
            font-size: 14px;
        }
        .article-meta i { margin-right: 6px; color: var(--secondary); }
        .article-category {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(245,166,35,0.2);
            color: var(--secondary);
            font-size: 13px;
            font-weight: 600;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 48px 0 64px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .article-content-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            overflow: hidden;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body h2, .article-body h3 {
            margin-top: 36px;
            margin-bottom: 16px;
            color: var(--text-dark);
        }
        .article-body h2 { font-size: 24px; }
        .article-body h3 { font-size: 20px; }
        .article-body ul, .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 8px; }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 28px auto;
            box-shadow: var(--shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(232,84,42,0.06);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-body);
            font-style: normal;
        }
        .article-body a { font-weight: 600; text-decoration: underline; }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            background: var(--bg-section-alt);
            color: var(--text-light);
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tag:hover { background: rgba(232,84,42,0.1); color: var(--primary); }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-widget {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
        }
        .sidebar-widget-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-color);
            position: relative;
        }
        .sidebar-widget-title::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 48px;
            height: 2px;
            background: var(--primary);
        }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(229,227,223,0.5);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-body);
            font-size: 14px;
            line-height: 1.5;
            transition: var(--transition);
        }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list a i { color: var(--secondary); font-size: 12px; margin-top: 4px; flex-shrink: 0; }
        .sidebar-list .sidebar-post-title { flex: 1; }
        .sidebar-list .sidebar-post-date {
            font-size: 12px;
            color: var(--text-light);
            flex-shrink: 0;
            white-space: nowrap;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            text-align: center;
            padding: 32px 24px;
        }
        .sidebar-cta h4 { color: #fff; font-size: 20px; margin-bottom: 8px; }
        .sidebar-cta p { color: rgba(255,255,255,0.85); font-size: 14px; margin-bottom: 20px; }
        .sidebar-cta .btn { background: #fff; color: var(--primary); }
        .sidebar-cta .btn:hover { background: rgba(255,255,255,0.9); transform: translateY(-2px); }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(232,84,42,0.3);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(232,84,42,0.35); color: #fff; }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .btn-sm { padding: 8px 20px; font-size: 13px; }
        .btn-lg { padding: 16px 36px; font-size: 17px; }

        /* ===== Article Nav ===== */
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            max-width: 45%;
        }
        .article-nav a:hover { color: var(--primary); }
        .article-nav .nav-next { text-align: right; justify-content: flex-end; }

        /* ===== Related Section ===== */
        .related-section {
            padding: 56px 0;
            background: var(--bg-section-alt);
        }
        .related-section .section-title {
            font-size: 26px;
            margin-bottom: 32px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .related-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--bg-section-alt);
        }
        .related-card-body { padding: 20px 22px; }
        .related-card-body h4 { font-size: 16px; margin-bottom: 8px; }
        .related-card-body h4 a { color: var(--text-dark); }
        .related-card-body h4 a:hover { color: var(--primary); }
        .related-card-body p { font-size: 14px; color: var(--text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card-meta { display: flex; align-items: center; gap: 14px; font-size: 12px; color: var(--text-light); margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border-color); }
        .related-card-meta i { margin-right: 4px; }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
        }
        .footer-top {
            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 { position: static; transform: none; justify-content: flex-start; margin-bottom: 16px; color: #fff; }
        .footer-brand .logo .logo-icon { background: linear-gradient(135deg, var(--primary), var(--secondary)); }
        .footer-brand p { font-size: 14px; line-height: 1.8; max-width: 360px; color: rgba(255,255,255,0.55); }
        .footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.55); font-size: 14px; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
        .footer-col ul li a:hover { color: var(--secondary); transform: translateX(4px); }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255,255,255,0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-socials { display: flex; gap: 14px; }
        .footer-socials a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.5);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-socials a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-box i { font-size: 56px; color: var(--text-light); margin-bottom: 20px; display: block; }
        .not-found-box h2 { font-size: 28px; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-light); margin-bottom: 24px; }

        /* ===== Structured Data ===== */
        .structured-data { display: none; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .sidebar-cta { grid-column: 1 / -1; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
        }

        @media (max-width: 768px) {
            .nav-left, .nav-right { display: none; }
            .menu-toggle { display: flex; }
            .mobile-menu { display: block; }
            .logo { font-size: 18px; left: 24px; transform: none; position: relative; }
            .header-inner { justify-content: flex-start; }
            .article-content-card { padding: 24px 20px; }
            .article-banner { padding-top: calc(var(--header-height) + 24px); padding-bottom: 32px; }
            .article-banner-title { font-size: 22px; }
            .article-meta { gap: 10px 16px; font-size: 13px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .article-nav { flex-direction: column; gap: 12px; }
            .article-nav a { max-width: 100%; }
            .article-nav .nav-next { text-align: left; justify-content: flex-start; }
            .footer-top { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-content-card { padding: 20px 16px; border-radius: var(--radius-md); }
            .article-banner-title { font-size: 20px; }
            .sidebar-widget { padding: 20px 16px; }
            .related-card-img { height: 150px; }
            .footer { padding-top: 40px; }
        }