/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --clr-primary: #0f1d3a;
        --clr-primary-light: #1a2f54;
        --clr-secondary: #d4a04a;
        --clr-secondary-light: #e8bc6a;
        --clr-secondary-dark: #b8892e;
        --clr-accent: #f05a28;
        --clr-bg: #f8f6f2;
        --clr-bg-alt: #f0ede8;
        --clr-bg-dark: #0a1428;
        --clr-text: #1a1a2e;
        --clr-text-light: #5a5a72;
        --clr-text-inverse: #f5f3ef;
        --clr-border: rgba(15, 29, 58, 0.10);
        --clr-card-bg: #ffffff;
        --clr-shadow: rgba(15, 29, 58, 0.08);
        --radius-sm: 8px;
        --radius-md: 16px;
        --radius-lg: 24px;
        --radius-xl: 32px;
        --shadow-sm: 0 2px 8px var(--clr-shadow);
        --shadow-md: 0 8px 24px var(--clr-shadow);
        --shadow-lg: 0 20px 48px var(--clr-shadow);
        --space-xs: 4px;
        --space-sm: 8px;
        --space-md: 16px;
        --space-lg: 24px;
        --space-xl: 32px;
        --space-2xl: 48px;
        --space-3xl: 64px;
        --space-4xl: 80px;
        --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
        --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        --max-width: 1200px;
    }

    /* ===== 基础重置 ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.6;
        color: var(--clr-text);
        background: var(--clr-bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--clr-secondary-dark); text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--clr-accent); }
    a:focus-visible { outline: 3px solid var(--clr-secondary); outline-offset: 2px; }
    button { cursor: pointer; font-family: inherit; border: none; background: none; transition: all var(--transition); }
    button:focus-visible { outline: 3px solid var(--clr-secondary); outline-offset: 2px; }
    input, textarea { font-family: inherit; font-size: 1rem; border: 1px solid var(--clr-border); border-radius: var(--radius-sm); padding: 12px 16px; background: var(--clr-card-bg); color: var(--clr-text); transition: border-color var(--transition); }
    input:focus, textarea:focus { outline: none; border-color: var(--clr-secondary); }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--clr-primary); }
    h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
    h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
    h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
    h4 { font-size: 1.15rem; }
    p { margin-bottom: 1em; }
    ::selection { background: var(--clr-secondary); color: var(--clr-primary); }

    /* ===== 容器 ===== */
    .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
    .container--narrow { max-width: 880px; }

    /* ===== 按钮 ===== */
    .btn {
        display: inline-flex; align-items: center; justify-content: center; gap: 10px;
        padding: 14px 32px; border-radius: 50px; font-weight: 600; font-size: 1rem;
        line-height: 1.2; text-align: center; transition: all var(--transition);
        border: 2px solid transparent; white-space: nowrap;
    }
    .btn--primary { background: var(--clr-secondary); color: var(--clr-primary); border-color: var(--clr-secondary); }
    .btn--primary:hover { background: var(--clr-secondary-light); border-color: var(--clr-secondary-light); color: var(--clr-primary); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(212,160,74,0.35); }
    .btn--primary:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(212,160,74,0.25); }
    .btn--outline { background: transparent; color: var(--clr-text-inverse); border-color: var(--clr-text-inverse); }
    .btn--outline:hover { background: var(--clr-text-inverse); color: var(--clr-primary); transform: translateY(-2px); }
    .btn--outline:active { transform: translateY(0); }
    .btn--dark { background: var(--clr-primary); color: var(--clr-text-inverse); border-color: var(--clr-primary); }
    .btn--dark:hover { background: var(--clr-primary-light); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(15,29,58,0.25); }
    .btn--accent { background: var(--clr-accent); color: #fff; border-color: var(--clr-accent); }
    .btn--accent:hover { background: #e04a1a; border-color: #e04a1a; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(240,90,40,0.35); }
    .btn--sm { padding: 10px 20px; font-size: 0.875rem; }
    .btn--lg { padding: 18px 44px; font-size: 1.1rem; }

    /* ===== 标签/徽章 ===== */
    .badge {
        display: inline-block; padding: 4px 14px; border-radius: 50px;
        font-size: 0.75rem; font-weight: 600; letter-spacing: 0.3px;
        background: var(--clr-secondary); color: var(--clr-primary);
    }
    .badge--live { background: #e74c3c; color: #fff; animation: pulse-badge 1.5s infinite; }
    .badge--hot { background: var(--clr-accent); color: #fff; }
    .badge--outline { background: transparent; border: 1px solid var(--clr-border); color: var(--clr-text-light); }
    .badge--white { background: rgba(255,255,255,0.15); color: #fff; backdrop-filter: blur(4px); }
    @keyframes pulse-badge { 0%,100% { opacity: 1; } 50% { opacity: 0.6; } }

    /* ===== 卡片 ===== */
    .card {
        background: var(--clr-card-bg); border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm); transition: all var(--transition);
        overflow: hidden; border: 1px solid var(--clr-border);
    }
    .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .card__img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; }
    .card__body { padding: 20px 24px 24px; }
    .card__title { font-size: 1.1rem; font-weight: 700; color: var(--clr-primary); margin-bottom: 8px; }
    .card__text { font-size: 0.9rem; color: var(--clr-text-light); line-height: 1.5; }
    .card__meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--clr-text-light); margin-top: 12px; }

    /* ===== 网格 ===== */
    .grid { display: grid; gap: var(--space-lg); }
    .grid--2 { grid-template-columns: repeat(2, 1fr); }
    .grid--3 { grid-template-columns: repeat(3, 1fr); }
    .grid--4 { grid-template-columns: repeat(4, 1fr); }

    /* ===== 板块 ===== */
    .section { padding: var(--space-4xl) 0; }
    .section--dark { background: var(--clr-bg-dark); color: var(--clr-text-inverse); }
    .section--dark h2, .section--dark h3 { color: #fff; }
    .section--alt { background: var(--clr-bg-alt); }
    .section__header { text-align: center; margin-bottom: var(--space-3xl); }
    .section__subtitle { font-size: 0.9rem; color: var(--clr-secondary); font-weight: 600; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px; }
    .section__title { margin-bottom: 12px; }
    .section__desc { max-width: 640px; margin: 0 auto; color: var(--clr-text-light); font-size: 1.05rem; }

    /* ===== 导航 ===== */
    .header {
        position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
        background: rgba(15, 29, 58, 0.92); backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255,255,255,0.06);
        transition: background var(--transition);
    }
    .header .container { display: flex; align-items: center; justify-content: space-between; height: 68px; }
    .header__logo { display: flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 800; color: #fff; letter-spacing: -0.5px; }
    .header__logo:hover { color: var(--clr-secondary); }
    .header__logo-icon { width: 36px; height: 36px; background: var(--clr-secondary); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; color: var(--clr-primary); font-weight: 900; }
    .nav { display: flex; align-items: center; gap: 8px; }
    .nav__link { padding: 8px 18px; border-radius: 50px; font-size: 0.9rem; font-weight: 500; color: rgba(255,255,255,0.75); transition: all var(--transition); position: relative; }
    .nav__link:hover { color: #fff; background: rgba(255,255,255,0.08); }
    .nav__link--active { color: #fff; background: rgba(212,160,74,0.2); }
    .nav__link--active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--clr-secondary); border-radius: 2px; }
    .nav__cta { margin-left: 12px; }
    .header__toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
    .header__toggle span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 2px; transition: all var(--transition); }

    /* ===== Hero ===== */
    .hero {
        position: relative; min-height: 100vh; display: flex; align-items: center;
        background: var(--clr-bg-dark); overflow: hidden;
    }
    .hero__bg {
        position: absolute; inset: 0; background-size: cover; background-position: center;
        background-repeat: no-repeat; opacity: 0.35;
    }
    .hero__overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,29,58,0.92) 0%, rgba(15,29,58,0.70) 50%, rgba(10,20,40,0.88) 100%); }
    .hero .container { position: relative; z-index: 2; padding-top: 80px; padding-bottom: 60px; }
    .hero__badge { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 20px; }
    .hero__title { color: #fff; font-weight: 800; line-height: 1.1; margin-bottom: 16px; }
    .hero__title span { color: var(--clr-secondary); }
    .hero__desc { color: rgba(255,255,255,0.75); font-size: 1.15rem; max-width: 600px; margin-bottom: 28px; line-height: 1.6; }
    .hero__actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 40px; }
    .hero__countdown { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
    .hero__countdown-label { color: rgba(255,255,255,0.6); font-size: 0.85rem; font-weight: 500; letter-spacing: 1px; }
    .hero__countdown-items { display: flex; gap: 10px; }
    .hero__cd-item { text-align: center; background: rgba(255,255,255,0.08); backdrop-filter: blur(4px); border-radius: var(--radius-sm); padding: 8px 16px; min-width: 56px; border: 1px solid rgba(255,255,255,0.06); }
    .hero__cd-num { font-size: 1.6rem; font-weight: 700; color: #fff; line-height: 1.2; }
    .hero__cd-label { font-size: 0.65rem; color: rgba(255,255,255,0.5); text-transform: uppercase; letter-spacing: 0.5px; }

    /* ===== 功能卡片 ===== */
    .feature-card { text-align: center; padding: 36px 28px; border-radius: var(--radius-md); background: var(--clr-card-bg); box-shadow: var(--shadow-sm); border: 1px solid var(--clr-border); transition: all var(--transition); }
    .feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); }
    .feature-card__icon { width: 64px; height: 64px; margin: 0 auto 16px; background: linear-gradient(135deg, var(--clr-secondary), var(--clr-secondary-light)); border-radius: 20px; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; color: var(--clr-primary); }
    .feature-card__title { font-size: 1.15rem; font-weight: 700; color: var(--clr-primary); margin-bottom: 8px; }
    .feature-card__text { font-size: 0.9rem; color: var(--clr-text-light); line-height: 1.5; }

    /* ===== 分类卡片 ===== */
    .cat-card { position: relative; border-radius: var(--radius-md); overflow: hidden; background: var(--clr-bg-dark); box-shadow: var(--shadow-sm); transition: all var(--transition); cursor: pointer; }
    .cat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
    .cat-card__img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 0.5s ease; }
    .cat-card:hover .cat-card__img { transform: scale(1.05); }
    .cat-card__overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(15,29,58,0.85) 0%, rgba(15,29,58,0.15) 60%); }
    .cat-card__body { position: absolute; bottom: 0; left: 0; right: 0; padding: 24px; }
    .cat-card__title { color: #fff; font-size: 1.15rem; font-weight: 700; margin-bottom: 4px; }
    .cat-card__count { color: rgba(255,255,255,0.65); font-size: 0.8rem; }

    /* ===== 统计数字 ===== */
    .stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }
    .stat-item { text-align: center; padding: 28px 16px; }
    .stat-item__num { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; color: var(--clr-secondary); line-height: 1.1; margin-bottom: 4px; }
    .stat-item__label { font-size: 0.9rem; color: rgba(255,255,255,0.65); font-weight: 500; }

    /* ===== 流程步骤 ===== */
    .step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); counter-reset: step; }
    .step-card { text-align: center; position: relative; padding: 32px 24px; }
    .step-card::before { counter-increment: step; content: '0' counter(step); position: absolute; top: -8px; left: 50%; transform: translateX(-50%); font-size: 4rem; font-weight: 900; color: var(--clr-secondary); opacity: 0.15; line-height: 1; pointer-events: none; }
    .step-card__num { width: 52px; height: 52px; margin: 0 auto 16px; background: var(--clr-secondary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; font-weight: 700; color: var(--clr-primary); position: relative; z-index: 1; }
    .step-card__title { font-size: 1.1rem; font-weight: 700; color: var(--clr-primary); margin-bottom: 6px; }
    .step-card__text { font-size: 0.9rem; color: var(--clr-text-light); line-height: 1.5; }

    /* ===== 文章列表 ===== */
    .post-list { display: grid; gap: var(--space-lg); }
    .post-item { display: flex; gap: 20px; padding: 20px 24px; background: var(--clr-card-bg); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); border: 1px solid var(--clr-border); transition: all var(--transition); }
    .post-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
    .post-item__thumb { width: 120px; min-height: 80px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; background: var(--clr-bg-alt); }
    .post-item__body { flex: 1; min-width: 0; }
    .post-item__title { font-size: 1.05rem; font-weight: 700; color: var(--clr-primary); margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .post-item__title:hover { color: var(--clr-secondary-dark); }
    .post-item__excerpt { font-size: 0.85rem; color: var(--clr-text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 8px; }
    .post-item__meta { display: flex; align-items: center; gap: 12px; font-size: 0.75rem; color: var(--clr-text-light); }
    .post-item__meta .badge { font-size: 0.65rem; padding: 2px 10px; }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; margin: 0 auto; }
    .faq-item { border-bottom: 1px solid var(--clr-border); padding: 20px 0; }
    .faq-item:first-child { padding-top: 0; }
    .faq-question { display: flex; justify-content: space-between; align-items: center; width: 100%; text-align: left; font-size: 1.05rem; font-weight: 600; color: var(--clr-primary); padding: 4px 0; gap: 16px; }
    .faq-question:hover { color: var(--clr-secondary-dark); }
    .faq-question__icon { font-size: 1.2rem; color: var(--clr-secondary); flex-shrink: 0; transition: transform var(--transition); }
    .faq-question.open .faq-question__icon { transform: rotate(45deg); }
    .faq-answer { padding-top: 12px; font-size: 0.95rem; color: var(--clr-text-light); line-height: 1.7; display: none; }
    .faq-answer.open { display: block; }

    /* ===== CTA ===== */
    .cta-section { background: var(--clr-bg-dark); position: relative; overflow: hidden; }
    .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.12; }
    .cta-content { position: relative; z-index: 2; text-align: center; max-width: 700px; margin: 0 auto; padding: 60px 0; }
    .cta-content h2 { color: #fff; margin-bottom: 12px; }
    .cta-content p { color: rgba(255,255,255,0.7); font-size: 1.05rem; margin-bottom: 28px; }

    /* ===== 页脚 ===== */
    .footer { background: var(--clr-primary); color: rgba(255,255,255,0.7); padding: 48px 0 24px; }
    .footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-xl); margin-bottom: 32px; }
    .footer__brand { font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
    .footer__brand .logo-icon { width: 32px; height: 32px; background: var(--clr-secondary); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 1rem; color: var(--clr-primary); font-weight: 900; }
    .footer__desc { font-size: 0.85rem; line-height: 1.6; max-width: 300px; }
    .footer__heading { font-size: 0.9rem; font-weight: 600; color: #fff; margin-bottom: 16px; }
    .footer__links { display: flex; flex-direction: column; gap: 10px; }
    .footer__links a { font-size: 0.85rem; color: rgba(255,255,255,0.6); }
    .footer__links a:hover { color: var(--clr-secondary); }
    .footer__bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.8rem; }
    .footer__bottom a { color: rgba(255,255,255,0.5); }
    .footer__bottom a:hover { color: var(--clr-secondary); }

    /* ===== 占位/空状态 ===== */
    .empty-state { text-align: center; padding: 48px 24px; color: var(--clr-text-light); }
    .empty-state__icon { font-size: 3rem; margin-bottom: 12px; opacity: 0.3; }
    .empty-state__text { font-size: 0.95rem; }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .grid--4 { grid-template-columns: repeat(2, 1fr); }
        .stat-grid { grid-template-columns: repeat(2, 1fr); }
        .footer__grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
        .header__toggle { display: flex; }
        .nav { position: fixed; top: 68px; left: 0; right: 0; background: rgba(15,29,58,0.98); backdrop-filter: blur(16px); flex-direction: column; padding: 20px; gap: 8px; display: none; border-bottom: 1px solid rgba(255,255,255,0.06); }
        .nav.open { display: flex; }
        .nav__link { width: 100%; text-align: center; padding: 12px; }
        .nav__cta { margin-left: 0; width: 100%; }
        .nav__cta .btn { width: 100%; justify-content: center; }

        .grid--2, .grid--3 { grid-template-columns: 1fr; }
        .step-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
        .hero__title { font-size: clamp(1.8rem, 6vw, 2.6rem); }
        .hero__desc { font-size: 1rem; }
        .post-item { flex-direction: column; }
        .post-item__thumb { width: 100%; height: 120px; }
        .footer__grid { grid-template-columns: 1fr; }
        .footer__bottom { flex-direction: column; text-align: center; }
        .section { padding: var(--space-3xl) 0; }
    }

    @media (max-width: 520px) {
        .container { padding: 0 16px; }
        .hero__actions { flex-direction: column; width: 100%; }
        .hero__actions .btn { width: 100%; justify-content: center; }
        .stat-grid { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
        .stat-item { padding: 16px 8px; }
        .hero__countdown { flex-direction: column; align-items: flex-start; gap: 8px; }
        .feature-card { padding: 24px 16px; }
        .card__body { padding: 16px; }
        .faq-question { font-size: 0.95rem; }
    }

    /* ===== 工具类 ===== */
    .text-center { text-align: center; }
    .mt-2 { margin-top: var(--space-lg); }
    .mb-2 { margin-bottom: var(--space-lg); }
    .gap-sm { gap: var(--space-sm); }
    .gap-md { gap: var(--space-md); }
    .flex-center { display: flex; align-items: center; justify-content: center; }
    .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e53935;
            --primary-dark: #c62828;
            --primary-light: #ffebee;
            --secondary: #1a237e;
            --secondary-light: #3f51b5;
            --accent: #ff6f00;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #0d1b2a;
            --text: #1a1a2e;
            --text-light: #5a5a7a;
            --text-white: #ffffff;
            --border: #e8e8f0;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.3);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 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);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-height);
        }

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

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

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

        button {
            cursor: pointer;
            background: none;
        }

        ul {
            list-style: none;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            body {
                padding-top: 64px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .header__logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 20px;
        }

        .header__toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .header__toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
            transition: all var(--transition);
        }

        .header__toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .header__toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .header__toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav__link {
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }

        .nav__link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav__link--active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .nav__link--active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav__cta {
            margin-left: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            line-height: 1.4;
        }

        .btn--primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(229, 57, 53, 0.3);
        }

        .btn--primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 28px rgba(229, 57, 53, 0.45);
            transform: translateY(-2px);
        }

        .btn--primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(229, 57, 53, 0.3);
        }

        .btn--primary:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 3px;
        }

        .btn--secondary {
            background: var(--secondary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(26, 35, 126, 0.3);
        }

        .btn--secondary:hover {
            background: var(--secondary-light);
            box-shadow: 0 8px 28px rgba(26, 35, 126, 0.45);
            transform: translateY(-2px);
        }

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

        .btn--outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .btn--sm {
            padding: 8px 20px;
            font-size: 13px;
        }

        .btn--lg {
            padding: 16px 36px;
            font-size: 17px;
        }

        .btn--white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
        }

        .btn--white:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
        }

        /* ===== Mobile Nav ===== */
        @media (max-width: 768px) {
            .header__toggle {
                display: flex;
            }

            .nav {
                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);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }

            .nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav__link {
                width: 100%;
                padding: 14px 18px;
                font-size: 16px;
                text-align: center;
            }

            .nav__link--active::after {
                display: none;
            }

            .nav__cta {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
            }

            .nav__cta .btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .header__logo {
                font-size: 18px;
            }
            .header__logo-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }
            .nav {
                padding: 16px 16px 24px;
            }
        }

        /* ===== Hero / Banner ===== */
        .hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a4a 100%);
            overflow: hidden;
            padding: 80px 0 60px;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(229, 57, 53, 0.15) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 50%, rgba(26, 35, 126, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-white);
            margin-bottom: 24px;
            letter-spacing: 0.3px;
        }

        .hero__badge i {
            color: var(--accent);
        }

        .hero__title {
            font-size: clamp(32px, 5vw, 56px);
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .hero__title span {
            background: linear-gradient(135deg, #ff8a80, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero__desc {
            font-size: clamp(16px, 1.4vw, 20px);
            color: rgba(255, 255, 255, 0.8);
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .hero__actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 340px;
                padding: 60px 0 48px;
            }
            .hero__title {
                font-size: 28px;
            }
            .hero__desc {
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .hero {
                min-height: 280px;
                padding: 48px 0 36px;
            }
            .hero__title {
                font-size: 24px;
            }
            .hero__actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

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

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

        .section--dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }

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

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

        .section__tag {
            display: inline-block;
            padding: 4px 16px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section__tag--dark {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-white);
        }

        .section__title {
            font-size: clamp(26px, 3.2vw, 38px);
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section--dark .section__title {
            color: var(--text-white);
        }

        .section__sub {
            font-size: 17px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section--dark .section__sub {
            color: rgba(255, 255, 255, 0.7);
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section__header {
                margin-bottom: 32px;
            }
            .section__title {
                font-size: 24px;
            }
            .section__sub {
                font-size: 15px;
            }
        }

        /* ===== Card Grid ===== */
        .grid {
            display: grid;
            gap: 24px;
        }

        .grid--2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .grid--3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .grid--4 {
            grid-template-columns: repeat(4, 1fr);
        }

        @media (max-width: 1024px) {
            .grid--4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .grid--2,
            .grid--3,
            .grid--4 {
                grid-template-columns: 1fr;
            }
        }

        @media (min-width: 769px) and (max-width: 1024px) {
            .grid--3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== Card ===== */
        .card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--border);
        }

        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .card__img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }

        .card__body {
            padding: 24px;
        }

        .card__tag {
            display: inline-block;
            padding: 2px 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .card__title {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text);
        }

        .card__text {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .card__meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
        }

        .card__meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        .card--dark {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .card--dark .card__title {
            color: var(--text-white);
        }
        .card--dark .card__text {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Feature Card (icon style) ===== */
        .feature-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 32px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .feature-card__icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            border-radius: 16px;
            font-size: 28px;
            color: var(--primary);
            transition: all var(--transition);
        }

        .feature-card:hover .feature-card__icon {
            background: var(--primary);
            color: #fff;
        }

        .feature-card__title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .feature-card__text {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Stat ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }

        .stat-item__number {
            font-size: clamp(32px, 3vw, 44px);
            font-weight: 800;
            background: linear-gradient(135deg, #ff8a80, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .stat-item__label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 20px 12px;
            }
        }

        @media (max-width: 520px) {
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }

        /* ===== List / Timeline ===== */
        .list-group {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .list-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px 24px;
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .list-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .list-item__index {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 10px;
            font-weight: 700;
            font-size: 16px;
        }

        .list-item__content h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }

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

        @media (max-width: 768px) {
            .list-item {
                padding: 16px 18px;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

        .faq-item__question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            text-align: left;
            transition: background var(--transition);
        }

        .faq-item__question:hover {
            background: var(--primary-light);
        }

        .faq-item__question i {
            transition: transform var(--transition);
            color: var(--primary);
            font-size: 14px;
        }

        .faq-item.active .faq-item__question i {
            transform: rotate(180deg);
        }

        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            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 {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }

        .cta .container {
            position: relative;
            z-index: 2;
        }

        .cta__title {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta__text {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta__actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        @media (max-width: 768px) {
            .cta {
                padding: 40px 24px;
                border-radius: var(--radius);
            }
            .cta__title {
                font-size: 24px;
            }
            .cta__text {
                font-size: 15px;
            }
            .cta__actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 32px;
            border-top: 4px solid var(--primary);
        }

        .footer__grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer__brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer__brand .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 20px;
        }

        .footer__desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer__heading {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer__links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: all var(--transition);
        }

        .footer__links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer__bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer__bottom a {
            color: rgba(255, 255, 255, 0.7);
        }

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

        @media (max-width: 1024px) {
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .footer {
                padding: 40px 0 24px;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer__desc {
                max-width: 100%;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            padding: 20px 0 0;
            font-size: 14px;
            color: var(--text-light);
        }

        .breadcrumb a {
            color: var(--text-light);
            transition: color var(--transition);
        }

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

        .breadcrumb span {
            color: var(--text);
            font-weight: 500;
        }

        .breadcrumb i {
            font-size: 12px;
            color: var(--text-light);
        }

        /* ===== Image overlay ===== */
        .img-overlay {
            position: relative;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }

        .img-overlay::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.5) 0%, transparent 60%);
            pointer-events: none;
        }

        /* ===== Divider ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 12px auto 20px;
        }

        .divider--left {
            margin: 12px 0 20px;
        }

        /* ===== Responsive helpers ===== */
        @media (max-width: 520px) {
            .btn--lg {
                padding: 14px 24px;
                font-size: 15px;
            }
            .hero__actions {
                flex-direction: column;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .card__body {
                padding: 18px;
            }
            .card__title {
                font-size: 17px;
            }
        }

        /* ===== Focus visible accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-light);
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #e8b830;
            --clr-primary-dark: #c9a020;
            --clr-primary-light: #f5d860;
            --clr-accent: #d43f3f;
            --clr-accent-dark: #b82e2e;
            --clr-bg: #0b1320;
            --clr-bg-alt: #111d2e;
            --clr-bg-card: #162033;
            --clr-bg-light: #f4f6fa;
            --clr-text: #e8ecf1;
            --clr-text-body: #c8d0dc;
            --clr-text-muted: #8a95a8;
            --clr-border: rgba(232, 184, 48, 0.15);
            --clr-border-light: rgba(255, 255, 255, 0.08);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(232, 184, 48, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-height: 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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--clr-text-body);
            background: var(--clr-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--clr-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--clr-primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--clr-text);
            line-height: 1.3;
            font-weight: 700;
        }
        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        /* ===== Header & Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(11, 19, 32, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--clr-border-light);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .header.scrolled {
            background: rgba(11, 19, 32, 0.98);
            box-shadow: var(--shadow-md);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--clr-text);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .header__logo:hover {
            color: var(--clr-primary);
        }
        .header__logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            border-radius: var(--radius-sm);
            color: #0b1320;
            font-size: 1.2rem;
        }
        .header__toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.06);
            gap: 5px;
            padding: 8px;
            transition: background var(--transition);
        }
        .header__toggle span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--clr-text);
            border-radius: 2px;
            transition: var(--transition);
        }
        .header__toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .header__toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .header__toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .header__toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav__link {
            position: relative;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--clr-text-body);
            border-radius: var(--radius-sm);
            transition: color var(--transition), background var(--transition);
        }
        .nav__link:hover {
            color: var(--clr-text);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav__link--active {
            color: var(--clr-primary) !important;
            background: rgba(232, 184, 48, 0.1);
        }
        .nav__link--active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--clr-primary);
            border-radius: 2px;
        }
        .nav__cta {
            margin-left: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 3px;
        }
        .btn--primary {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            color: #0b1320;
            box-shadow: 0 4px 16px rgba(232, 184, 48, 0.3);
        }
        .btn--primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 184, 48, 0.4);
            color: #0b1320;
        }
        .btn--primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(232, 184, 48, 0.25);
        }
        .btn--outline {
            background: transparent;
            color: var(--clr-primary);
            border: 2px solid var(--clr-primary);
        }
        .btn--outline:hover {
            background: var(--clr-primary);
            color: #0b1320;
            transform: translateY(-2px);
        }
        .btn--sm {
            padding: 8px 20px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }
        .btn--lg {
            padding: 16px 40px;
            font-size: 1.1rem;
            border-radius: var(--radius-lg);
        }
        @media (max-width: 768px) {
            .header__toggle {
                display: flex;
            }
            .nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(11, 19, 32, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 6px;
                border-bottom: 1px solid var(--clr-border-light);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                box-shadow: var(--shadow-lg);
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav__link {
                width: 100%;
                padding: 14px 18px;
                font-size: 1.05rem;
            }
            .nav__link--active::after {
                bottom: 4px;
            }
            .nav__cta {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
            }
            .nav__cta .btn {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .header__logo {
                font-size: 1.25rem;
            }
            .header__logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
        }
        /* ===== Main ===== */
        .main {
            padding-top: var(--header-height);
            min-height: 80vh;
        }
        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0b1320 0%, #162033 100%);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            z-index: 0;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(11, 19, 32, 0.6) 0%, rgba(11, 19, 32, 0.95) 100%);
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-hero__meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            margin-bottom: 24px;
        }
        .article-hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: var(--clr-primary);
            color: #0b1320;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }
        .article-hero__date {
            font-size: 0.9rem;
            color: var(--clr-text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero__date i {
            font-size: 0.8rem;
        }
        .article-hero h1 {
            font-size: clamp(1.8rem, 5vw, 3.2rem);
            font-weight: 800;
            color: var(--clr-text);
            line-height: 1.2;
            max-width: 900px;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }
        .article-hero__desc {
            font-size: 1.1rem;
            color: var(--clr-text-body);
            max-width: 720px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .article-hero {
                padding: 60px 0 50px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-hero__desc {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 480px) {
            .article-hero {
                padding: 40px 0 36px;
            }
            .article-hero h1 {
                font-size: 1.35rem;
            }
        }
        /* ===== Article Body ===== */
        .article-body {
            padding: 60px 0 40px;
            background: var(--clr-bg-alt);
        }
        .article-body__inner {
            max-width: 820px;
            margin: 0 auto;
            background: var(--clr-bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            border: 1px solid var(--clr-border-light);
            box-shadow: var(--shadow-md);
        }
        .article-body__content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--clr-text-body);
        }
        .article-body__content p {
            margin-bottom: 1.5em;
        }
        .article-body__content h2,
        .article-body__content h3 {
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            color: var(--clr-text);
        }
        .article-body__content h2 {
            font-size: 1.6rem;
        }
        .article-body__content h3 {
            font-size: 1.25rem;
        }
        .article-body__content ul,
        .article-body__content ol {
            margin-bottom: 1.5em;
            padding-left: 1.8em;
        }
        .article-body__content ul li {
            list-style: disc;
            margin-bottom: 0.4em;
        }
        .article-body__content ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
        }
        .article-body__content a {
            color: var(--clr-primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body__content a:hover {
            color: var(--clr-primary-light);
        }
        .article-body__content img {
            border-radius: var(--radius-md);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body__content blockquote {
            border-left: 4px solid var(--clr-primary);
            padding: 16px 24px;
            margin: 1.5em 0;
            background: rgba(232, 184, 48, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--clr-text);
            font-style: italic;
        }
        .article-body__content code {
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--clr-primary-light);
        }
        .article-body__content pre {
            background: rgba(0, 0, 0, 0.3);
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.5em 0;
            border: 1px solid var(--clr-border-light);
        }
        @media (max-width: 768px) {
            .article-body {
                padding: 40px 0 30px;
            }
            .article-body__inner {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }
            .article-body__content {
                font-size: 0.98rem;
            }
            .article-body__content h2 {
                font-size: 1.35rem;
            }
            .article-body__content h3 {
                font-size: 1.1rem;
            }
        }
        @media (max-width: 480px) {
            .article-body__inner {
                padding: 20px 14px;
            }
            .article-body__content {
                font-size: 0.92rem;
            }
        }
        /* ===== Article Tags & Share ===== */
        .article-extra {
            padding: 0 0 50px;
            background: var(--clr-bg-alt);
        }
        .article-extra__inner {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 30px;
            border-top: 1px solid var(--clr-border-light);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }
        .article-tags__label {
            font-size: 0.85rem;
            color: var(--clr-text-muted);
            font-weight: 500;
        }
        .article-tags__item {
            display: inline-flex;
            padding: 5px 14px;
            background: rgba(232, 184, 48, 0.1);
            border: 1px solid rgba(232, 184, 48, 0.2);
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--clr-primary);
            font-weight: 500;
            transition: all var(--transition);
        }
        .article-tags__item:hover {
            background: var(--clr-primary);
            color: #0b1320;
            border-color: var(--clr-primary);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-share__label {
            font-size: 0.85rem;
            color: var(--clr-text-muted);
            font-weight: 500;
        }
        .article-share__btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--clr-text-body);
            font-size: 1rem;
            transition: all var(--transition);
            border: 1px solid var(--clr-border-light);
        }
        .article-share__btn:hover {
            background: var(--clr-primary);
            color: #0b1320;
            border-color: var(--clr-primary);
            transform: translateY(-2px);
        }
        @media (max-width: 600px) {
            .article-extra__inner {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        /* ===== Related Posts ===== */
        .related-posts {
            padding: 60px 0;
            background: var(--clr-bg);
        }
        .related-posts__header {
            text-align: center;
            margin-bottom: 48px;
        }
        .related-posts__title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--clr-text);
            margin-bottom: 12px;
        }
        .related-posts__sub {
            font-size: 1rem;
            color: var(--clr-text-muted);
            max-width: 500px;
            margin: 0 auto;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--clr-border-light);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(232, 184, 48, 0.25);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
        }
        .related-card__img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--clr-bg-alt);
        }
        .related-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .related-card__img img {
            transform: scale(1.06);
        }
        .related-card__body {
            padding: 18px 20px 22px;
        }
        .related-card__cat {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--clr-primary);
            background: rgba(232, 184, 48, 0.12);
            padding: 3px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .related-card__title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--clr-text);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card__title a {
            color: inherit;
        }
        .related-card__title a:hover {
            color: var(--clr-primary);
        }
        .related-card__meta {
            font-size: 0.8rem;
            color: var(--clr-text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 600px) {
            .related-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .related-posts__title {
                font-size: 1.5rem;
            }
        }
        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0b1320 0%, #162033 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section__title {
            font-size: clamp(1.6rem, 4vw, 2.6rem);
            font-weight: 800;
            color: var(--clr-text);
            margin-bottom: 16px;
        }
        .cta-section__desc {
            font-size: 1.1rem;
            color: var(--clr-text-body);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .cta-section__actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 50px 0;
            }
            .cta-section__desc {
                font-size: 0.95rem;
            }
            .cta-section__actions .btn {
                width: 100%;
                max-width: 300px;
            }
        }
        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 60px 0 80px;
            background: var(--clr-bg);
        }
        .faq-section__header {
            text-align: center;
            margin-bottom: 48px;
        }
        .faq-section__title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--clr-text);
            margin-bottom: 12px;
        }
        .faq-section__sub {
            font-size: 1rem;
            color: var(--clr-text-muted);
            max-width: 500px;
            margin: 0 auto;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border-light);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item.open {
            border-color: rgba(232, 184, 48, 0.3);
        }
        .faq-item__question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--clr-text);
            background: none;
            text-align: left;
            gap: 16px;
            transition: color var(--transition);
        }
        .faq-item__question:hover {
            color: var(--clr-primary);
        }
        .faq-item__icon {
            flex-shrink: 0;
            font-size: 1.1rem;
            color: var(--clr-primary);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-item__icon {
            transform: rotate(45deg);
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--clr-text-body);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-item__answer {
            max-height: 300px;
            padding: 0 24px 22px;
        }
        @media (max-width: 768px) {
            .faq-section__title {
                font-size: 1.5rem;
            }
            .faq-item__question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-item__answer {
                font-size: 0.9rem;
            }
            .faq-item.open .faq-item__answer {
                padding: 0 18px 18px;
            }
        }
        /* ===== Error State ===== */
        .error-state {
            padding: 100px 0 120px;
            text-align: center;
            background: var(--clr-bg);
        }
        .error-state__icon {
            font-size: 4rem;
            color: var(--clr-text-muted);
            margin-bottom: 24px;
        }
        .error-state h1 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--clr-text);
            margin-bottom: 16px;
        }
        .error-state p {
            font-size: 1.1rem;
            color: var(--clr-text-muted);
            margin-bottom: 32px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .error-state .btn {
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .error-state {
                padding: 60px 0 80px;
            }
            .error-state h1 {
                font-size: 1.5rem;
            }
        }
        /* ===== Footer ===== */
        .footer {
            background: #070e18;
            border-top: 1px solid var(--clr-border-light);
            padding: 60px 0 30px;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer__brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--clr-text);
            margin-bottom: 16px;
        }
        .footer__brand .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            border-radius: var(--radius-sm);
            color: #0b1320;
            font-size: 1.1rem;
        }
        .footer__desc {
            font-size: 0.9rem;
            color: var(--clr-text-muted);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer__heading {
            font-size: 1rem;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer__links a {
            font-size: 0.9rem;
            color: var(--clr-text-muted);
            transition: color var(--transition);
        }
        .footer__links a:hover {
            color: var(--clr-primary);
        }
        .footer__bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding-top: 30px;
            border-top: 1px solid var(--clr-border-light);
            font-size: 0.85rem;
            color: var(--clr-text-muted);
        }
        .footer__bottom a {
            color: var(--clr-text-muted);
        }
        .footer__bottom a:hover {
            color: var(--clr-primary);
        }
        @media (max-width: 1024px) {
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 600px) {
            .footer {
                padding: 40px 0 24px;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer__desc {
                max-width: 100%;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border-width: 0;
        }
        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--clr-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(232, 184, 48, 0.3);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(232, 184, 48, 0.5);
        }
        /* ===== Selection ===== */
        ::selection {
            background: var(--clr-primary);
            color: #0b1320;
        }