/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --accent: #e8b84b;
            --accent-light: #f0d07a;
            --accent-dark: #c99a2e;
            --bg: #f5f7fb;
            --bg-card: #ffffff;
            --bg-dark: #0f1a4a;
            --text: #1a1a2e;
            --text-light: #6b7a8f;
            --text-white: #f0f4ff;
            --border: #e2e8f0;
            --shadow-sm: 0 2px 8px rgba(26,42,108,0.06);
            --shadow-md: 0 6px 24px rgba(26,42,108,0.10);
            --shadow-lg: 0 16px 48px rgba(26,42,108,0.14);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --nav-width: 240px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== 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);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            display: flex;
            min-height: 100vh;
        }
        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 { list-style: none; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--wide { max-width: 1360px; }

        /* ===== 左侧导航 ===== */
        .app-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--bg-card);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .app-nav__header {
            padding: 28px 20px 20px;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .app-nav__logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .app-nav__logo i { color: var(--accent); font-size: 26px; }
        .app-nav__logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .app-nav__menu { flex: 1; padding: 20px 12px; overflow-y: auto; }
        .app-nav__menu-item { margin-bottom: 4px; }
        .app-nav__menu-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
            position: relative;
        }
        .app-nav__menu-link i { width: 20px; text-align: center; font-size: 16px; color: var(--text-light); transition: var(--transition); }
        .app-nav__menu-link:hover { background: var(--bg); color: var(--primary); }
        .app-nav__menu-link:hover i { color: var(--primary); }
        .app-nav__menu-link.active { background: rgba(26,42,108,0.08); color: var(--primary); font-weight: 600; }
        .app-nav__menu-link.active i { color: var(--primary); }
        .app-nav__menu-link.active::before {
            content: '';
            position: absolute;
            left: -4px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
        }
        .app-nav__footer {
            padding: 16px 20px 24px;
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: var(--text-light);
        }
        .app-nav__footer small { display: block; line-height: 1.5; }

        /* ===== 移动端导航切换 ===== */
        .nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 44px;
            height: 44px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-md);
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .nav-toggle:hover { background: var(--primary); color: #fff; }
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(15,26,74,0.5);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== 主内容区 ===== */
        .app-main {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-dark);
            overflow: hidden;
            padding: 80px 24px 60px;
        }
        .hero__bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero__bg { transform: scale(1.0); }
        .hero__overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,74,0.85) 0%, rgba(26,42,108,0.60) 50%, rgba(15,26,74,0.80) 100%);
        }
        .hero__content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            color: var(--text-white);
        }
        .hero__badge {
            display: inline-block;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 20px;
            box-shadow: 0 4px 16px rgba(232,184,75,0.3);
        }
        .hero__title {
            font-size: clamp(32px, 5.5vw, 60px);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 18px;
            letter-spacing: -1px;
        }
        .hero__title span { color: var(--accent); }
        .hero__desc {
            font-size: clamp(16px, 2vw, 20px);
            opacity: 0.9;
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero__actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.3px;
        }
        .btn--primary {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 4px 20px rgba(232,184,75,0.35);
        }
        .btn--primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(232,184,75,0.45); color: var(--primary-dark); }
        .btn--outline {
            background: transparent;
            border-color: rgba(255,255,255,0.3);
            color: var(--text-white);
        }
        .btn--outline:hover { border-color: var(--accent); background: rgba(232,184,75,0.12); color: var(--accent); transform: translateY(-2px); }
        .btn--outline-dark {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn--outline-dark:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn--accent {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 4px 20px rgba(232,184,75,0.3);
        }
        .btn--accent:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(232,184,75,0.4); color: var(--primary-dark); }
        .btn i { font-size: 18px; }

        /* ===== 板块通用 ===== */
        .section { padding: 72px 0; }
        .section--dark { background: var(--primary-dark); color: var(--text-white); }
        .section--light { background: var(--bg-card); }
        .section--gradient { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); color: var(--text-white); }
        .section__header { text-align: center; margin-bottom: 48px; }
        .section__tag {
            display: inline-block;
            background: rgba(232,184,75,0.15);
            color: var(--accent);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section__tag--light { background: rgba(232,184,75,0.2); color: var(--accent-light); }
        .section__title {
            font-size: clamp(26px, 3.2vw, 38px);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 14px;
        }
        .section__title span { color: var(--accent); }
        .section__desc {
            font-size: 16px;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section--dark .section__desc { color: rgba(255,255,255,0.7); }
        .section--gradient .section__desc { color: rgba(255,255,255,0.75); }

        /* ===== 简介板块 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-grid__image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
        .intro-grid__image img { width: 100%; height: 360px; object-fit: cover; transition: var(--transition); }
        .intro-grid__image:hover img { transform: scale(1.03); }
        .intro-grid__content h3 { font-size: 28px; font-weight: 700; margin-bottom: 16px; color: var(--primary); }
        .intro-grid__content p { color: var(--text-light); line-height: 1.8; margin-bottom: 16px; font-size: 15px; }
        .intro-grid__content .btn { margin-top: 8px; }

        /* ===== 分类卡片 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .card__image { height: 180px; overflow: hidden; position: relative; }
        .card__image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .card:hover .card__image img { transform: scale(1.06); }
        .card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .card__tag {
            display: inline-block;
            background: rgba(26,42,108,0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .card__title { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--text); line-height: 1.4; }
        .card__desc { font-size: 14px; color: var(--text-light); line-height: 1.6; flex: 1; margin-bottom: 16px; }
        .card__link {
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .card__link:hover { gap: 12px; color: var(--accent-dark); }
        .card__link i { font-size: 14px; }

        /* ===== 资讯列表 ===== */
        .news-list { display: flex; flex-direction: column; gap: 20px; }
        .news-item {
            display: flex;
            gap: 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            align-items: flex-start;
        }
        .news-item:hover { transform: translateX(6px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
        .news-item__thumb {
            width: 120px;
            min-height: 84px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }
        .news-item__thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .news-item:hover .news-item__thumb img { transform: scale(1.05); }
        .news-item__content { flex: 1; }
        .news-item__meta { display: flex; gap: 16px; align-items: center; margin-bottom: 6px; font-size: 13px; color: var(--text-light); }
        .news-item__meta .cat { background: rgba(26,42,108,0.08); padding: 2px 12px; border-radius: 20px; font-weight: 600; color: var(--primary); font-size: 12px; }
        .news-item__title { font-size: 17px; font-weight: 700; margin-bottom: 6px; line-height: 1.45; }
        .news-item__title a { color: var(--text); }
        .news-item__title a:hover { color: var(--primary); }
        .news-item__excerpt { font-size: 14px; color: var(--text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-empty { text-align: center; padding: 48px 24px; color: var(--text-light); font-size: 15px; background: var(--bg-card); border-radius: var(--radius); border: 1px dashed var(--border); }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item { padding: 24px 16px; background: rgba(255,255,255,0.06); border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.08); transition: var(--transition); }
        .stat-item:hover { background: rgba(255,255,255,0.10); transform: translateY(-4px); }
        .stat-item__number { font-size: 36px; font-weight: 800; color: var(--accent); line-height: 1.2; margin-bottom: 6px; }
        .stat-item__label { font-size: 14px; opacity: 0.8; }

        /* ===== 流程步骤 ===== */
        .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
        .steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 15%;
            right: 15%;
            height: 2px;
            background: linear-gradient(to right, var(--accent), var(--accent-light), var(--accent));
            opacity: 0.3;
        }
        .step { text-align: center; position: relative; padding: 0 12px; }
        .step__icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 3px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 32px;
            color: var(--accent);
            box-shadow: 0 0 0 6px rgba(232,184,75,0.12);
            transition: var(--transition);
            position: relative;
            z-index: 2;
        }
        .step:hover .step__icon { transform: scale(1.08); box-shadow: 0 0 0 10px rgba(232,184,75,0.18); }
        .step__num {
            position: absolute;
            top: -8px;
            right: calc(50% - 48px);
            background: var(--accent);
            color: var(--primary-dark);
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 800;
            box-shadow: 0 2px 8px rgba(232,184,75,0.3);
        }
        .step h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
        .step p { font-size: 14px; color: var(--text-light); 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); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-item__question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            gap: 16px;
            transition: var(--transition);
            user-select: none;
            color: var(--text);
        }
        .faq-item__question:hover { background: rgba(26,42,108,0.02); }
        .faq-item__question i { color: var(--accent); transition: var(--transition); font-size: 14px; flex-shrink: 0; }
        .faq-item.active .faq-item__question i { transform: rotate(180deg); }
        .faq-item__answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.active .faq-item__answer { max-height: 300px; padding: 0 24px 20px; }

        /* ===== CTA ===== */
        .cta-box {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(232,184,75,0.06);
            pointer-events: none;
        }
        .cta-box h3 { font-size: 28px; font-weight: 700; margin-bottom: 12px; }
        .cta-box p { color: var(--text-light); margin-bottom: 28px; max-width: 500px; margin-left: auto; margin-right: auto; font-size: 15px; }
        .cta-box .btn { font-size: 17px; padding: 16px 40px; }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 24px 32px;
            margin-top: auto;
        }
        .footer__inner { max-width: 1200px; margin: 0 auto; }
        .footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
        .footer__brand .app-nav__logo { color: #fff; margin-bottom: 12px; }
        .footer__brand .app-nav__logo i { color: var(--accent); }
        .footer__brand p { font-size: 14px; line-height: 1.7; max-width: 320px; }
        .footer__heading { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .footer__links { display: flex; flex-direction: column; gap: 10px; }
        .footer__links a { color: rgba(255,255,255,0.6); font-size: 14px; transition: var(--transition); }
        .footer__links a:hover { color: var(--accent); padding-left: 4px; }
        .footer__bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; text-align: center; font-size: 13px; color: rgba(255,255,255,0.4); }
        .footer__bottom a { color: rgba(255,255,255,0.5); }
        .footer__bottom a:hover { color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-grid__image { order: -1; }
            .intro-grid__image img { height: 280px; }
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .steps { gap: 24px; }
            .steps::before { display: none; }
            .footer__grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .app-nav { transform: translateX(-100%); }
            .app-nav.open { transform: translateX(0); box-shadow: var(--shadow-lg); }
            .nav-toggle { display: flex; }
            .nav-overlay.active { display: block; }
            .app-main { margin-left: 0; padding-top: 0; }
            .hero { min-height: 380px; padding: 100px 20px 50px; }
            .hero__title { font-size: 28px; }
            .hero__actions { flex-direction: column; align-items: center; }
            .hero__actions .btn { width: 100%; max-width: 280px; justify-content: center; }
            .section { padding: 48px 0; }
            .section__header { margin-bottom: 32px; }
            .card-grid { grid-template-columns: 1fr; gap: 20px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .steps { grid-template-columns: 1fr; gap: 28px; }
            .news-item { flex-direction: column; gap: 16px; padding: 16px; }
            .news-item__thumb { width: 100%; height: 160px; }
            .cta-box { padding: 36px 24px; }
            .cta-box h3 { font-size: 22px; }
            .footer__grid { grid-template-columns: 1fr; gap: 28px; }
            .faq-item__question { padding: 14px 18px; font-size: 15px; }
            .faq-item__answer { font-size: 14px; }
        }

        @media (max-width: 520px) {
            .hero { min-height: 320px; padding: 90px 16px 40px; }
            .hero__title { font-size: 24px; }
            .hero__desc { font-size: 14px; }
            .btn { padding: 12px 24px; font-size: 14px; }
            .intro-grid__image img { height: 200px; }
            .stat-item__number { font-size: 28px; }
            .step__icon { width: 64px; height: 64px; font-size: 26px; }
            .news-item__thumb { height: 120px; }
            .footer { padding: 32px 16px 24px; }
        }

        /* ===== 工具类 ===== */
        .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-16 { gap: 16px; }
        .gap-24 { gap: 24px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --accent: #e8b84b;
            --accent-hover: #d4a43a;
            --accent-glow: rgba(232, 184, 75, 0.25);
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #22223a;
            --bg-section: #12121f;
            --bg-body: #0a0a12;
            --text: #f0e9e0;
            --text-light: #a8a0a0;
            --text-muted: #6e6a7a;
            --border: #2a2a42;
            --border-light: #3a3a52;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-accent: 0 4px 24px rgba(232, 184, 75, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container: 1280px;
            --sidebar-width: 240px;
            --header-h: 0px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg-body);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== Layout Shell ===== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .app-sidebar {
            width: var(--sidebar-width);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            background: var(--bg-dark);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 100;
            transition: transform var(--transition);
            overflow-y: auto;
        }

        .app-main {
            margin-left: var(--sidebar-width);
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

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

        /* ===== Sidebar Navigation ===== */
        .app-nav {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 20px 0;
        }

        .app-nav__header {
            padding: 0 20px 24px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 16px;
        }

        .app-nav__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            transition: opacity var(--transition);
        }
        .app-nav__logo:hover {
            opacity: 0.85;
            color: var(--text);
        }
        .app-nav__logo i {
            color: var(--accent);
            font-size: 24px;
        }
        .app-nav__logo span {
            background: linear-gradient(135deg, #fff, #e8b84b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .app-nav__menu {
            flex: 1;
            padding: 0 12px;
        }

        .app-nav__menu-item {
            margin-bottom: 4px;
        }

        .app-nav__menu-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-light);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
        }
        .app-nav__menu-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }
        .app-nav__menu-link:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text);
        }
        .app-nav__menu-link.active {
            background: rgba(232, 184, 75, 0.12);
            color: var(--accent);
            box-shadow: inset 3px 0 0 var(--accent);
        }
        .app-nav__menu-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .app-nav__footer {
            padding: 16px 20px 8px;
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
        }
        .app-nav__footer a {
            color: var(--text-light);
        }
        .app-nav__footer a:hover {
            color: var(--accent);
        }

        /* ===== Mobile Toggle ===== */
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 110;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            color: var(--text);
            font-size: 20px;
            box-shadow: var(--shadow-sm);
            cursor: pointer;
            transition: all var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--bg-card-hover);
        }
        .mobile-toggle:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 99;
            backdrop-filter: blur(4px);
        }

        /* ===== Article Page ===== */
        .article-banner {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            padding: 60px 0 40px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-light) 60%, #0f1a2e 100%);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, var(--bg-body) 0%, transparent 70%);
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--text-light);
        }
        .article-breadcrumb a:hover {
            color: var(--accent);
        }
        .article-breadcrumb .sep {
            color: var(--text-muted);
        }
        .article-breadcrumb .current {
            color: var(--accent);
        }

        .article-banner__title {
            font-size: clamp(28px, 4.5vw, 52px);
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .article-banner__meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--text-light);
            padding-bottom: 8px;
        }
        .article-banner__meta .tag {
            background: var(--accent);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 13px;
            display: inline-block;
        }
        .article-banner__meta i {
            margin-right: 4px;
            color: var(--accent);
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 48px 0 64px;
            background: var(--bg-body);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
        }

        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
        }

        .article-content h1,
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: #fff;
            margin-top: 32px;
            margin-bottom: 16px;
            font-weight: 700;
            line-height: 1.3;
        }
        .article-content h1 {
            font-size: 28px;
            margin-top: 0;
        }
        .article-content h2 {
            font-size: 24px;
            border-bottom: 1px solid var(--border);
            padding-bottom: 10px;
        }
        .article-content h3 {
            font-size: 20px;
        }
        .article-content p {
            margin-bottom: 18px;
            color: var(--text);
            line-height: 1.8;
        }
        .article-content p:last-child {
            margin-bottom: 0;
        }
        .article-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--accent-hover);
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 20px;
            color: var(--text);
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            margin: 24px 0;
            background: rgba(232, 184, 75, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content .article-image-wrapper {
            position: relative;
            margin: 24px 0;
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .article-content .article-image-wrapper img {
            margin: 0;
            width: 100%;
            object-fit: cover;
        }
        .article-content .article-image-wrapper figcaption {
            background: rgba(0, 0, 0, 0.6);
            padding: 10px 16px;
            font-size: 13px;
            color: var(--text-light);
            text-align: center;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .article-content th,
        .article-content td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .article-content th {
            background: var(--primary-light);
            color: var(--accent);
            font-weight: 600;
        }
        .article-content td {
            color: var(--text);
        }
        .article-content code {
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            color: var(--accent);
        }
        .article-content pre {
            background: var(--bg-dark);
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 24px 0;
            border: 1px solid var(--border);
        }
        .article-content pre code {
            background: none;
            padding: 0;
            color: var(--text);
        }

        /* ===== Article Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card__title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card__title i {
            color: var(--accent);
        }

        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.02);
            transition: all var(--transition);
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.4;
        }
        .sidebar-list a:hover {
            background: rgba(232, 184, 75, 0.08);
            color: var(--text);
            transform: translateX(4px);
        }
        .sidebar-list a i {
            color: var(--accent);
            font-size: 12px;
            margin-top: 4px;
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            color: var(--text-light);
            font-size: 13px;
            transition: all var(--transition);
        }
        .sidebar-tags a:hover {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary-light), var(--bg-dark));
            border: 1px solid var(--accent);
            text-align: center;
            padding: 28px 20px;
        }
        .sidebar-cta .big-icon {
            font-size: 40px;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .sidebar-cta h4 {
            color: #fff;
            font-size: 18px;
            margin-bottom: 8px;
        }
        .sidebar-cta p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .sidebar-cta .btn {
            display: inline-block;
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
        }
        .not-found-box i {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 28px;
            color: #fff;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 24px;
            font-size: 16px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--primary);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(232, 184, 75, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: var(--radius-sm);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer__inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer__brand .app-nav__logo {
            margin-bottom: 12px;
        }
        .footer__brand p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            max-width: 360px;
        }

        .footer__heading {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer__heading::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer__links a {
            color: var(--text-light);
            font-size: 14px;
            transition: all var(--transition);
        }
        .footer__links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer__bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer__bottom a {
            color: var(--text-light);
        }
        .footer__bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .sidebar-cta {
                grid-column: 1 / -1;
            }
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer__brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            :root {
                --sidebar-width: 0px;
            }

            .app-sidebar {
                transform: translateX(-100%);
            }
            .app-sidebar.open {
                transform: translateX(0);
            }

            .app-main {
                margin-left: 0;
            }

            .mobile-toggle {
                display: flex;
            }
            .mobile-overlay.active {
                display: block;
            }

            .article-banner {
                min-height: 240px;
                padding: 80px 0 30px;
            }
            .article-banner__title {
                font-size: 24px;
            }
            .article-banner__meta {
                font-size: 13px;
                gap: 12px;
            }

            .article-content {
                padding: 24px 20px;
                border-radius: var(--radius-md);
            }
            .article-content h1 {
                font-size: 22px;
            }
            .article-content h2 {
                font-size: 20px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .article-content table {
                font-size: 13px;
            }
            .article-content th,
            .article-content td {
                padding: 8px 10px;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

            .article-section {
                padding: 24px 0 40px;
            }

            .footer {
                padding: 32px 0 16px;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer__brand p {
                max-width: 100%;
            }

            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .article-banner {
                min-height: 200px;
                padding: 70px 0 24px;
            }
            .article-banner__title {
                font-size: 20px;
            }
            .article-banner__meta {
                font-size: 12px;
                gap: 8px;
            }
            .article-content {
                padding: 18px 14px;
            }
            .article-content h1 {
                font-size: 20px;
            }
            .article-content h2 {
                font-size: 18px;
            }
            .article-content p {
                font-size: 15px;
            }
            .sidebar-card {
                padding: 16px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .article-banner .container {
            animation: fadeInUp 0.6s ease-out;
        }
        .article-content {
            animation: fadeInUp 0.5s ease-out;
        }

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

        /* ===== Utility ===== */
        .text-accent {
            color: var(--accent);
        }
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #c8a24e;
            --primary-dark: #a8842e;
            --primary-light: #e8c86a;
            --primary-gradient: linear-gradient(135deg, #c8a24e 0%, #e8b84b 100%);
            --bg-dark: #0b0e14;
            --bg-card: #141a24;
            --bg-card-hover: #1c2432;
            --bg-section: #0f141e;
            --bg-sidebar: #0d111a;
            --text-main: #f0ede8;
            --text-light: #9aa4b8;
            --text-muted: #6b7588;
            --border-color: rgba(200, 162, 78, 0.15);
            --border-glow: rgba(200, 162, 78, 0.3);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(200, 162, 78, 0.06);
            --shadow-card-hover: 0 12px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(200, 162, 78, 0.15);
            --shadow-glow: 0 0 40px rgba(200, 162, 78, 0.08);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
            --header-height: 0px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            display: flex;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== 左侧导航 ===== */
        .app-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            backdrop-filter: blur(12px);
            overflow-y: auto;
            padding: 24px 16px 20px;
            transition: var(--transition);
        }
        .app-nav::-webkit-scrollbar {
            width: 4px;
        }
        .app-nav::-webkit-scrollbar-track {
            background: transparent;
        }
        .app-nav::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }

        .app-nav__header {
            margin-bottom: 32px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border-color);
        }

        .app-nav__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            text-decoration: none;
        }
        .app-nav__logo i {
            font-size: 1.6rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .app-nav__logo span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .app-nav__logo:hover {
            opacity: 0.9;
        }

        .app-nav__menu {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .app-nav__menu-item {
            width: 100%;
        }

        .app-nav__menu-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }
        .app-nav__menu-link i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .app-nav__menu-link:hover {
            background: rgba(200, 162, 78, 0.08);
            color: #fff;
        }
        .app-nav__menu-link:hover i {
            color: var(--primary-light);
        }
        .app-nav__menu-link.active {
            background: rgba(200, 162, 78, 0.12);
            color: #fff;
            box-shadow: inset 3px 0 0 var(--primary);
        }
        .app-nav__menu-link.active i {
            color: var(--primary-light);
        }

        .app-nav__footer {
            margin-top: 24px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
            font-size: 0.75rem;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
        }
        .app-nav__footer a {
            color: var(--text-light);
        }
        .app-nav__footer a:hover {
            color: var(--primary-light);
        }

        /* ===== 主内容区 ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ===== Hero Banner ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(160deg, #0b0e14 0%, #141a24 40%, #1a1f2e 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6) 0%, transparent 80%);
            -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6) 0%, transparent 80%);
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(200, 162, 78, 0.06) 0%, transparent 70%);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(200, 162, 78, 0.12);
            border: 1px solid var(--border-glow);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--primary-light);
            margin-bottom: 20px;
            letter-spacing: 1px;
            font-weight: 600;
        }
        .category-hero__badge i {
            font-size: 0.75rem;
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .category-hero p {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 680px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .category-hero__stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }
        .category-hero__stat {
            display: flex;
            flex-direction: column;
        }
        .category-hero__stat-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .category-hero__stat-num small {
            font-size: 1rem;
            color: var(--primary-light);
            font-weight: 400;
        }
        .category-hero__stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }
        .section--dark {
            background: var(--bg-section);
        }
        .section--card {
            background: var(--bg-card);
        }
        .section__title {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section__subtitle {
            font-size: 1rem;
            color: var(--text-light);
            margin-bottom: 40px;
            max-width: 600px;
        }
        .section__header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }
        .section__link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-light);
            font-weight: 500;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .section__link i {
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .section__link:hover {
            color: #fff;
        }
        .section__link:hover i {
            transform: translateX(4px);
        }

        /* ===== 攻略分类标签 ===== */
        .guide-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 48px;
        }
        .guide-tag {
            padding: 8px 22px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(200, 162, 78, 0.06);
            border: 1px solid var(--border-color);
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .guide-tag:hover {
            background: rgba(200, 162, 78, 0.12);
            border-color: var(--border-glow);
            color: #fff;
        }
        .guide-tag.active {
            background: var(--primary-gradient);
            border-color: transparent;
            color: #0b0e14;
            font-weight: 600;
        }

        /* ===== 卡片网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        /* ===== 攻略卡片 ===== */
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
        }
        .guide-card__img {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .guide-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .guide-card:hover .guide-card__img img {
            transform: scale(1.05);
        }
        .guide-card__img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-gradient);
            color: #0b0e14;
            border: none;
            letter-spacing: 0.3px;
        }
        .guide-card__body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card__meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .guide-card__meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .guide-card__meta i {
            font-size: 0.7rem;
            color: var(--primary-light);
        }
        .guide-card__title {
            font-size: 1.15rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
            transition: var(--transition);
        }
        .guide-card:hover .guide-card__title {
            color: var(--primary-light);
        }
        .guide-card__desc {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .guide-card__footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-color);
        }
        .guide-card__author {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .guide-card__author i {
            font-size: 1.2rem;
            color: var(--primary-light);
        }
        .guide-card__link {
            color: var(--primary-light);
            font-weight: 500;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }
        .guide-card__link i {
            font-size: 0.7rem;
        }
        .guide-card__link:hover {
            color: #fff;
            gap: 8px;
        }

        /* ===== 特色攻略（图文交错） ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .feature-block:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
        }
        .feature-block__image {
            position: relative;
            height: 100%;
            min-height: 300px;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .feature-block__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .feature-block:hover .feature-block__image img {
            transform: scale(1.03);
        }
        .feature-block__image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(11, 14, 20, 0.4) 0%, transparent 100%);
        }
        .feature-block__content {
            padding: 40px 48px 40px 32px;
        }
        .feature-block__badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            background: rgba(200, 162, 78, 0.1);
            border-radius: 50px;
            font-size: 0.75rem;
            color: var(--primary-light);
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid var(--border-glow);
        }
        .feature-block h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .feature-block p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-block .btn {
            margin-top: 4px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            text-decoration: none;
            background: var(--primary-gradient);
            color: #0b0e14;
            box-shadow: 0 4px 20px rgba(200, 162, 78, 0.25);
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(200, 162, 78, 0.35);
            color: #0b0e14;
        }
        .btn:active {
            transform: scale(0.97);
        }
        .btn--outline {
            background: transparent;
            color: var(--primary-light);
            border: 1px solid var(--border-glow);
            box-shadow: none;
        }
        .btn--outline:hover {
            background: rgba(200, 162, 78, 0.1);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .btn--sm {
            padding: 8px 20px;
            font-size: 0.8rem;
        }

        /* ===== 排行/数据列表 ===== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: default;
        }
        .rank-item:hover {
            border-color: var(--border-glow);
            background: var(--bg-card-hover);
        }
        .rank-item__num {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-light);
            width: 32px;
            text-align: center;
            flex-shrink: 0;
        }
        .rank-item__num.top {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .rank-item__info {
            flex: 1;
        }
        .rank-item__title {
            font-weight: 600;
            color: #fff;
            font-size: 0.95rem;
        }
        .rank-item__desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .rank-item__tag {
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 600;
            background: rgba(200, 162, 78, 0.08);
            color: var(--primary-light);
            border: 1px solid var(--border-glow);
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            padding: 20px 24px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--border-glow);
            background: var(--bg-card-hover);
        }
        .faq-item__q {
            font-weight: 600;
            color: #fff;
            font-size: 0.95rem;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .faq-item__q i {
            color: var(--primary-light);
            font-size: 0.85rem;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .faq-item__a {
            margin-top: 10px;
            padding-left: 24px;
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-item__a {
            display: block;
        }
        .faq-item.open {
            border-color: var(--border-glow);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(160deg, #0b0e14 0%, #141a24 60%);
            position: relative;
            overflow: hidden;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 50%, rgba(200, 162, 78, 0.05) 0%, transparent 70%);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 72px 32px;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-sidebar);
            border-top: 1px solid var(--border-color);
            padding: 48px 32px 24px;
            flex-shrink: 0;
        }
        .footer__inner {
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer__brand .app-nav__logo {
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .footer__brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 360px;
        }
        .footer__heading {
            font-weight: 600;
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer__links a {
            color: var(--text-light);
            font-size: 0.85rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer__links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer__bottom {
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            font-size: 0.8rem;
            color: var(--text-muted);
            text-align: center;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 6px;
        }
        .footer__bottom a {
            color: var(--text-light);
        }
        .footer__bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 移动端导航切换 ===== */
        .nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: #fff;
            font-size: 1.2rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            backdrop-filter: blur(8px);
        }
        .nav-toggle:hover {
            border-color: var(--border-glow);
            background: var(--bg-card-hover);
        }

        /* ===== 移动端遮罩 ===== */
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-block {
                grid-template-columns: 1fr;
            }
            .feature-block__image {
                min-height: 220px;
                max-height: 300px;
            }
            .feature-block__content {
                padding: 28px 32px 32px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .category-hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --sidebar-width: 0px;
            }
            .app-nav {
                transform: translateX(-100%);
                width: 280px;
                box-shadow: 4px 0 40px rgba(0, 0, 0, 0.6);
            }
            .app-nav.open {
                transform: translateX(0);
            }
            .nav-toggle {
                display: flex;
            }
            .nav-overlay.active {
                display: block;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .container {
                padding: 0 20px;
            }
            .category-hero {
                padding: 64px 0 40px;
                min-height: 260px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero p {
                font-size: 0.95rem;
            }
            .category-hero__stats {
                gap: 24px;
            }
            .category-hero__stat-num {
                font-size: 1.4rem;
            }
            .section {
                padding: 48px 0;
            }
            .section__title {
                font-size: 1.5rem;
            }
            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .guide-card__body {
                padding: 16px 18px 20px;
            }
            .feature-block__content {
                padding: 24px 20px 28px;
            }
            .feature-block h3 {
                font-size: 1.3rem;
            }
            .cta-section .container {
                padding: 48px 20px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .footer {
                padding: 32px 20px 20px;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer__brand p {
                max-width: 100%;
            }
            .faq-item {
                padding: 16px 18px;
            }
            .rank-item {
                padding: 12px 16px;
                flex-wrap: wrap;
            }
            .guide-tags {
                gap: 8px;
                margin-bottom: 32px;
            }
            .guide-tag {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .section__header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                margin-bottom: 24px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero__stats {
                flex-direction: column;
                gap: 12px;
            }
            .btn {
                padding: 10px 22px;
                font-size: 0.8rem;
            }
            .guide-card__title {
                font-size: 1rem;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 辅助类 ===== */
        .text-gradient {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .text-center {
            text-align: center;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }