/* roulang page: index */
:root {
  --primary: #1a7a3a;
  --primary-light: #28a84e;
  --primary-dark: #0f5c2a;
  --accent: #f5a623;
  --accent-light: #ffc44d;
  --accent-dark: #d4891a;
  --bg: #f8faf9;
  --bg-alt: #edf3f0;
  --bg-dark: #1a2e24;
  --text: #1a2a22;
  --text-light: #5a7268;
  --text-white: #f0f7f2;
  --border: #d0e0d8;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 22px;
  --shadow: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-sm: 0 4px 16px rgba(0,0,0,0.05);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
  --max-width: 1200px;
  --header-h: 76px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; margin-bottom: 1rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
p { margin-bottom: 1rem; color: var(--text-light); }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: rgba(255,255,255,0.8); }
.text-center { text-align: center; }
.text-accent { color: var(--accent); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: 50px; font-weight: 600; font-size: 1rem; cursor: pointer; transition: var(--transition); border: 2px solid transparent; letter-spacing: 0.3px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,122,58,0.35); }
.btn-accent { background: var(--accent); color: #1a2a22; }
.btn-accent:hover { background: var(--accent-dark); color: #1a2a22; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,166,35,0.35); }
.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary-dark); }
.btn-white:hover { background: var(--bg-alt); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-lg { padding: 18px 44px; font-size: 1.1rem; }
.badge { display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; background: rgba(26,122,58,0.12); color: var(--primary); }
.badge-accent { background: rgba(245,166,35,0.15); color: var(--accent-dark); }
.card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-sm); padding: 28px; transition: var(--transition); border: 1px solid var(--border); }
.card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.card-img { border-radius: var(--radius-sm) var(--radius-sm) 0 0; width: 100%; height: 200px; object-fit: cover; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-12 { gap: 12px; }
.gap-20 { gap: 20px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-40 { margin-bottom: 40px; }
/* ===== Header / Nav ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,0.92); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(208,224,216,0.5); height: var(--header-h); transition: var(--transition); }
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.logo { font-size: 1.5rem; font-weight: 800; color: var(--primary); display: flex; align-items: center; gap: 8px; letter-spacing: -0.5px; }
.logo i { font-size: 1.8rem; color: var(--accent); }
.logo:hover { color: var(--primary-dark); }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a { padding: 8px 18px; border-radius: 50px; font-weight: 500; color: var(--text); font-size: 0.95rem; position: relative; }
.nav a:hover { background: rgba(26,122,58,0.08); color: var(--primary); }
.nav a.active { background: var(--primary); color: #fff; }
.nav a.active:hover { background: var(--primary-dark); }
.nav-cta { margin-left: 12px; }
.nav-cta .btn { padding: 10px 24px; font-size: 0.95rem; }
.nav-toggle { display: none; background: none; font-size: 1.6rem; color: var(--text); cursor: pointer; padding: 4px; }
/* ===== Hero ===== */
.hero { position: relative; padding: 140px 0 100px; margin-top: var(--header-h); background: linear-gradient(135deg, #0f2e1e 0%, #1a4a32 40%, #2d6a4a 100%); overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.2; mix-blend-mode: overlay; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; position: relative; z-index: 2; }
.hero-content { color: #fff; }
.hero-content h1 { font-size: 3.2rem; color: #fff; margin-bottom: 0.6rem; line-height: 1.15; }
.hero-content h1 .accent { color: var(--accent); }
.hero-content p { font-size: 1.2rem; color: rgba(255,255,255,0.85); margin-bottom: 1.8rem; max-width: 540px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { display: flex; justify-content: center; align-items: center; position: relative; }
.hero-card { background: rgba(255,255,255,0.1); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.15); border-radius: var(--radius-lg); padding: 36px; width: 100%; max-width: 420px; color: #fff; }
.hero-card .stat-row { display: flex; justify-content: space-between; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.hero-card .stat-row:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.hero-card .stat-label { opacity: 0.8; font-size: 0.95rem; }
.hero-card .stat-value { font-weight: 700; font-size: 1.2rem; }
/* ===== Features ===== */
.feature-icon { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; margin-bottom: 16px; background: rgba(26,122,58,0.12); color: var(--primary); }
.feature-card { padding: 32px 28px; }
.feature-card h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.95rem; margin-bottom: 0; }
/* ===== Category Entry ===== */
.cat-card { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/9; display: flex; align-items: flex-end; cursor: pointer; transition: var(--transition); }
.cat-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.cat-card:hover img { transform: scale(1.05); }
.cat-card .overlay { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.15) 60%, transparent 100%); }
.cat-card .cat-label { position: relative; z-index: 2; padding: 20px 24px; color: #fff; width: 100%; }
.cat-card .cat-label h3 { color: #fff; font-size: 1.4rem; margin-bottom: 4px; }
.cat-card .cat-label span { font-size: 0.9rem; opacity: 0.85; display: flex; align-items: center; gap: 6px; }
/* ===== News List ===== */
.news-item { display: flex; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--border); align-items: flex-start; }
.news-item:last-child { border-bottom: none; }
.news-item .news-img { width: 140px; height: 100px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
.news-item .news-body { flex: 1; }
.news-item .news-body h3 { font-size: 1.15rem; margin-bottom: 6px; }
.news-item .news-body h3 a { color: var(--text); }
.news-item .news-body h3 a:hover { color: var(--primary); }
.news-item .news-meta { display: flex; gap: 16px; font-size: 0.85rem; color: var(--text-light); align-items: center; }
.news-item .news-meta .badge { font-size: 0.75rem; }
/* ===== Stats ===== */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item { text-align: center; padding: 28px 16px; }
.stat-item .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
.stat-item .stat-number.accent { color: var(--accent); }
.stat-item .stat-desc { font-size: 1rem; color: var(--text-light); margin-top: 4px; }
/* ===== Steps ===== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.step-card { text-align: center; padding: 36px 24px; position: relative; }
.step-number { width: 52px; height: 52px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; font-weight: 700; margin: 0 auto 16px; }
.step-card h3 { font-size: 1.2rem; }
.step-card p { font-size: 0.95rem; margin-bottom: 0; }
/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; background: #fff; transition: var(--transition); }
.faq-item:hover { border-color: var(--primary-light); }
.faq-question { padding: 18px 24px; font-weight: 600; font-size: 1.05rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; background: none; width: 100%; text-align: left; color: var(--text); }
.faq-question i { transition: var(--transition); font-size: 1.2rem; color: var(--primary); }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { padding: 0 24px 18px; font-size: 0.95rem; color: var(--text-light); line-height: 1.7; display: none; }
.faq-item.active .faq-answer { display: block; }
/* ===== CTA ===== */
.cta-section { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%); padding: 80px 0; text-align: center; color: #fff; }
.cta-section h2 { color: #fff; font-size: 2.4rem; margin-bottom: 0.8rem; }
.cta-section p { color: rgba(255,255,255,0.85); font-size: 1.15rem; max-width: 600px; margin: 0 auto 1.8rem; }
.cta-section .btn { margin: 0 8px; }
/* ===== Footer ===== */
.footer { background: var(--bg-dark); color: rgba(255,255,255,0.8); padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand .logo { color: #fff; margin-bottom: 12px; }
.footer-brand .logo i { color: var(--accent); }
.footer-brand p { font-size: 0.95rem; color: rgba(255,255,255,0.7); max-width: 300px; }
.footer-col h4 { color: #fff; font-size: 1.1rem; margin-bottom: 16px; }
.footer-col a { display: block; padding: 4px 0; font-size: 0.95rem; color: rgba(255,255,255,0.7); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.9rem; color: rgba(255,255,255,0.6); }
.footer-bottom a { color: rgba(255,255,255,0.7); }
.footer-bottom a:hover { color: var(--accent); }
.footer-socials { display: flex; gap: 12px; }
.footer-socials a { width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.7); font-size: 1.1rem; }
.footer-socials a:hover { background: var(--accent); border-color: var(--accent); color: #1a2a22; }
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  h1 { font-size: 2.4rem; }
  h2 { font-size: 1.9rem; }
  .hero-content h1 { font-size: 2.6rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); }
  .nav.open { display: flex; }
  .nav a { width: 100%; padding: 12px 16px; }
  .nav-cta { margin-left: 0; margin-top: 8px; width: 100%; }
  .nav-cta .btn { width: 100%; justify-content: center; }
  .nav-toggle { display: block; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-content h1 { font-size: 2.2rem; }
  .hero-card { max-width: 100%; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; gap: 16px; }
  .news-item { flex-direction: column; }
  .news-item .news-img { width: 100%; height: 180px; }
  .section { padding: 56px 0; }
  .hero { padding: 110px 0 60px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-section h2 { font-size: 1.8rem; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { width: 100%; justify-content: center; }
  .grid-4 { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-item .stat-number { font-size: 2rem; }
  .btn-lg { padding: 14px 32px; font-size: 1rem; }
  .section { padding: 40px 0; }
  .card { padding: 20px; }
}

/* roulang page: article */
/* === 设计变量 === */
    :root {
        --primary: #e53935;
        --primary-dark: #c62828;
        --primary-light: #ffebee;
        --accent: #ff6f00;
        --accent-light: #fff3e0;
        --bg: #fafafa;
        --bg-alt: #f5f5f5;
        --bg-card: #ffffff;
        --text: #1a1a2e;
        --text-light: #5a5a7a;
        --text-muted: #9e9eb0;
        --border: #e8e8f0;
        --radius: 16px;
        --radius-sm: 10px;
        --radius-xs: 6px;
        --shadow: 0 4px 24px rgba(0,0,0,0.06);
        --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
        --shadow-btn: 0 4px 14px rgba(229,57,53,0.30);
        --transition: 0.30s cubic-bezier(0.4,0,0.2,1);
        --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        --max-width: 1200px;
        --header-h: 72px;
    }
    *,
    *::before,
    *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }
    body {
        font-family: var(--font);
        background: var(--bg);
        color: var(--text);
        line-height: 1.7;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-dark); }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    button, input, textarea { font-family: inherit; font-size: inherit; }
    .container {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }
    @media (max-width: 768px) { .container { padding: 0 18px; } }
    @media (max-width: 520px) { .container { padding: 0 14px; } }

    /* === 标题层级 === */
    h1 { font-size: 2.4rem; font-weight: 800; line-height: 1.25; letter-spacing: -0.02em; }
    h2 { font-size: 2.0rem; font-weight: 700; line-height: 1.30; letter-spacing: -0.01em; }
    h3 { font-size: 1.5rem; font-weight: 700; line-height: 1.40; }
    h4 { font-size: 1.2rem; font-weight: 600; line-height: 1.50; }
    @media (max-width: 768px) { h1 { font-size: 1.8rem; } h2 { font-size: 1.6rem; } h3 { font-size: 1.3rem; } }
    @media (max-width: 520px) { h1 { font-size: 1.5rem; } h2 { font-size: 1.3rem; } h3 { font-size: 1.15rem; } }

    /* === 间距工具 === */
    .mt-8 { margin-top: 8px; }
    .mt-12 { margin-top: 12px; }
    .mt-16 { margin-top: 16px; }
    .mt-24 { margin-top: 24px; }
    .mt-32 { margin-top: 32px; }
    .mt-48 { margin-top: 48px; }
    .mt-64 { margin-top: 64px; }
    .mb-8 { margin-bottom: 8px; }
    .mb-16 { margin-bottom: 16px; }
    .mb-24 { margin-bottom: 24px; }
    .mb-32 { margin-bottom: 32px; }
    .mb-48 { margin-bottom: 48px; }
    .text-center { text-align: center; }
    .text-muted { color: var(--text-muted); }

    /* === 按钮 === */
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 0.95rem;
        border: none;
        cursor: pointer;
        transition: var(--transition);
        text-decoration: none;
        background: var(--bg-card);
        color: var(--text);
        box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    }
    .btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); color: var(--text); }
    .btn:active { transform: translateY(0); }
    .btn-primary {
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: #fff;
        box-shadow: var(--shadow-btn);
    }
    .btn-primary:hover { background: linear-gradient(135deg, var(--primary-dark), #b71c1c); color: #fff; box-shadow: 0 8px 24px rgba(229,57,53,0.40); }
    .btn-accent {
        background: linear-gradient(135deg, var(--accent), #e65100);
        color: #fff;
        box-shadow: 0 4px 14px rgba(255,111,0,0.30);
    }
    .btn-accent:hover { background: linear-gradient(135deg, #e65100, #bf360c); color: #fff; box-shadow: 0 8px 24px rgba(255,111,0,0.40); }
    .btn-outline {
        background: transparent;
        border: 2px solid var(--primary);
        color: var(--primary);
    }
    .btn-outline:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
    .btn-sm { padding: 8px 18px; font-size: 0.85rem; }
    .btn-lg { padding: 16px 36px; font-size: 1.05rem; }

    /* === 徽章 / 标签 === */
    .badge {
        display: inline-block;
        padding: 4px 14px;
        border-radius: 50px;
        font-size: 0.78rem;
        font-weight: 600;
        background: var(--primary-light);
        color: var(--primary);
    }
    .badge-accent { background: var(--accent-light); color: var(--accent); }
    .badge-outline { background: transparent; border: 1px solid var(--border); color: var(--text-light); }

    /* === 分隔线 === */
    .divider { border: none; height: 1px; background: var(--border); margin: 48px 0; }

    /* === HEADER === */
    .header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        height: var(--header-h);
        background: rgba(255,255,255,0.92);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(0,0,0,0.05);
        transition: var(--transition);
    }
    .header-inner {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.35rem;
        font-weight: 800;
        color: var(--primary);
        text-decoration: none;
        letter-spacing: -0.01em;
    }
    .logo i { font-size: 1.5rem; color: var(--accent); }
    .logo:hover { color: var(--primary-dark); }
    .nav { display: flex; align-items: center; gap: 8px; }
    .nav a {
        padding: 8px 18px;
        border-radius: 50px;
        font-size: 0.92rem;
        font-weight: 500;
        color: var(--text-light);
        text-decoration: none;
        transition: var(--transition);
        white-space: nowrap;
    }
    .nav a:hover { background: var(--bg-alt); color: var(--text); }
    .nav a.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
    .nav-cta { margin-left: 8px; }
    .nav-cta .btn { padding: 8px 22px; font-size: 0.88rem; }
    .nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text); cursor: pointer; padding: 4px 8px; border-radius: var(--radius-xs); }
    .nav-toggle:hover { background: var(--bg-alt); }
    @media (max-width: 768px) {
        .nav-toggle { display: block; }
        .nav {
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            flex-direction: column;
            padding: 16px 24px 24px;
            gap: 6px;
            border-bottom: 1px solid var(--border);
            transform: translateY(-120%);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
            box-shadow: 0 20px 40px rgba(0,0,0,0.06);
        }
        .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
        .nav a { width: 100%; text-align: center; padding: 12px 18px; }
        .nav-cta { width: 100%; margin-left: 0; margin-top: 8px; }
        .nav-cta .btn { width: 100%; justify-content: center; }
    }

    /* === 文章头部 === */
    .article-hero {
        margin-top: var(--header-h);
        padding: 80px 0 60px;
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
        position: relative;
        overflow: hidden;
        min-height: 320px;
        display: flex;
        align-items: center;
    }
    .article-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        opacity: 0.15;
        mix-blend-mode: overlay;
    }
    .article-hero .container {
        position: relative;
        z-index: 2;
        width: 100%;
    }
    .article-hero .badge { margin-bottom: 12px; }
    .article-hero h1 {
        color: #fff;
        max-width: 860px;
        font-size: 2.6rem;
        line-height: 1.20;
    }
    .article-hero .meta {
        display: flex;
        flex-wrap: wrap;
        gap: 16px 28px;
        margin-top: 20px;
        color: rgba(255,255,255,0.75);
        font-size: 0.92rem;
    }
    .article-hero .meta i { margin-right: 6px; }
    .article-hero .meta span { display: inline-flex; align-items: center; }
    @media (max-width: 768px) {
        .article-hero { padding: 60px 0 40px; min-height: 240px; }
        .article-hero h1 { font-size: 1.8rem; }
        .article-hero .meta { gap: 12px 20px; font-size: 0.85rem; }
    }
    @media (max-width: 520px) {
        .article-hero { padding: 48px 0 32px; }
        .article-hero h1 { font-size: 1.5rem; }
    }

    /* === 文章主体 === */
    .article-main {
        padding: 48px 0 80px;
    }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 48px;
        align-items: start;
    }
    @media (max-width: 960px) {
        .article-layout { grid-template-columns: 1fr; gap: 40px; }
    }

    /* 正文区域 */
    .article-body {
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        padding: 48px;
        font-size: 1.05rem;
        line-height: 1.85;
        color: var(--text);
    }
    .article-body p { margin-bottom: 1.4em; }
    .article-body h2, .article-body h3 { margin-top: 1.8em; margin-bottom: 0.6em; }
    .article-body ul, .article-body ol { margin-bottom: 1.4em; padding-left: 1.6em; }
    .article-body li { margin-bottom: 0.4em; }
    .article-body img { margin: 1.6em 0; border-radius: var(--radius-sm); }
    .article-body blockquote {
        border-left: 4px solid var(--primary);
        background: var(--primary-light);
        padding: 16px 24px;
        margin: 1.6em 0;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-light);
        font-style: italic;
    }
    .article-body a { text-decoration: underline; text-underline-offset: 2px; }
    .article-body a:hover { text-decoration-thickness: 2px; }
    .article-body .cms-table-wrap { overflow-x: auto; margin: 1.6em 0; }
    .article-body table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
    .article-body th, .article-body td { padding: 12px 16px; border: 1px solid var(--border); text-align: left; }
    .article-body th { background: var(--bg-alt); font-weight: 600; }
    @media (max-width: 768px) {
        .article-body { padding: 28px 20px; font-size: 0.98rem; }
    }
    @media (max-width: 520px) {
        .article-body { padding: 20px 16px; }
    }

    /* 侧边栏 */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 28px;
    }
    .sidebar-card {
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        padding: 28px;
    }
    .sidebar-card h4 {
        font-size: 1.05rem;
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        gap: 8px;
        color: var(--text);
    }
    .sidebar-card h4 i { color: var(--primary); }
    .sidebar-list { list-style: none; }
    .sidebar-list li { padding: 10px 0; border-bottom: 1px solid var(--border); }
    .sidebar-list li:last-child { border-bottom: none; }
    .sidebar-list a {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: 0.92rem;
        color: var(--text-light);
        line-height: 1.5;
    }
    .sidebar-list a:hover { color: var(--primary); }
    .sidebar-list a i { color: var(--primary); margin-top: 3px; font-size: 0.8rem; }
    .sidebar-tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .sidebar-tags a {
        padding: 6px 16px;
        border-radius: 50px;
        background: var(--bg-alt);
        color: var(--text-light);
        font-size: 0.82rem;
        font-weight: 500;
        border: 1px solid var(--border);
    }
    .sidebar-tags a:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }

    /* === 信息未找到 === */
    .not-found-wrap {
        text-align: center;
        padding: 80px 24px;
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
    }
    .not-found-wrap i { font-size: 3rem; color: var(--text-muted); margin-bottom: 20px; }
    .not-found-wrap h2 { font-size: 1.8rem; margin-bottom: 12px; }
    .not-found-wrap p { color: var(--text-light); margin-bottom: 24px; }

    /* === 相关文章 === */
    .related-section {
        padding: 48px 0 64px;
        background: var(--bg-alt);
        margin-top: 48px;
    }
    .related-section h2 { text-align: center; margin-bottom: 36px; }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    @media (max-width: 768px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 520px) { .related-grid { grid-template-columns: 1fr; } }
    .related-card {
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        overflow: hidden;
        transition: var(--transition);
    }
    .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
    .related-card .info { padding: 18px 20px 22px; }
    .related-card .info h3 { font-size: 1.05rem; margin-bottom: 6px; }
    .related-card .info h3 a { color: var(--text); }
    .related-card .info h3 a:hover { color: var(--primary); }
    .related-card .info .meta { font-size: 0.82rem; color: var(--text-muted); display: flex; gap: 12px; margin-top: 8px; }

    /* === 页脚 === */
    .footer {
        background: #1a1a2e;
        color: rgba(255,255,255,0.80);
        padding: 56px 0 0;
    }
    .footer .logo { color: #fff; }
    .footer .logo i { color: var(--accent); }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    @media (max-width: 960px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
    @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; gap: 24px; } }
    .footer-brand p { font-size: 0.92rem; color: rgba(255,255,255,0.60); margin-top: 12px; max-width: 320px; line-height: 1.7; }
    .footer-socials { display: flex; gap: 14px; }
    .footer-socials a {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: rgba(255,255,255,0.06);
        color: rgba(255,255,255,0.70);
        font-size: 1.15rem;
        transition: var(--transition);
    }
    .footer-socials a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
    .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
    .footer-col a {
        display: block;
        color: rgba(255,255,255,0.60);
        font-size: 0.90rem;
        padding: 5px 0;
        transition: var(--transition);
    }
    .footer-col a:hover { color: #fff; padding-left: 4px; }
    .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding: 20px 0 24px;
        font-size: 0.85rem;
        color: rgba(255,255,255,0.45);
    }
    .footer-bottom a { color: rgba(255,255,255,0.55); margin: 0 4px; }
    .footer-bottom a:hover { color: #fff; }
    @media (max-width: 520px) { .footer-bottom { flex-direction: column; text-align: center; } }

    /* === 返回顶部 === */
    .back-top {
        position: fixed;
        bottom: 32px;
        right: 32px;
        z-index: 999;
        width: 48px;
        height: 48px;
        border-radius: 50%;
        background: var(--primary);
        color: #fff;
        border: none;
        font-size: 1.2rem;
        cursor: pointer;
        box-shadow: var(--shadow-btn);
        transition: var(--transition);
        opacity: 0;
        pointer-events: none;
        transform: translateY(20px);
    }
    .back-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
    .back-top:hover { background: var(--primary-dark); transform: translateY(-4px); }

    /* === 响应式微调 === */
    @media (max-width: 768px) {
        .article-layout { gap: 28px; }
        .related-section { padding: 32px 0 48px; }
        .back-top { bottom: 20px; right: 20px; width: 42px; height: 42px; font-size: 1rem; }
    }
    @media (max-width: 520px) {
        .article-main { padding: 24px 0 48px; }
        .sidebar-card { padding: 20px 18px; }
    }

    /* 打印优化 */
    @media print {
        .header, .footer, .back-top, .article-sidebar, .related-section, .nav-cta { display: none !important; }
        .article-hero { margin-top: 0; padding: 20px 0; min-height: auto; background: #fff !important; }
        .article-hero h1 { color: #000; }
        .article-hero .meta { color: #666; }
        .article-body { box-shadow: none; padding: 20px 0; }
    }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #e53935;
            --primary-light: #ff6f60;
            --primary-dark: #b71c1c;
            --accent: #ff8f00;
            --accent-light: #ffc046;
            --accent-dark: #c56000;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-light: #f1f3f5;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #2d3436;
            --text-muted: #636e72;
            --text-light: #b2bec3;
            --text-white: #ffffff;
            --border-color: #e9ecef;
            --border-light: #f0f0f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --shadow-hover: 0 12px 36px rgba(0,0,0,0.18);
            --transition: 0.30s cubic-bezier(0.22, 1, 0.36, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 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-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            padding-top: var(--header-height);
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
        button, input, textarea, select { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; margin-bottom: 0.5rem; }
        p { margin-bottom: 1rem; }

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

        /* ===== Header / Nav ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1050;
            height: var(--header-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(0,0,0,0.06);
            box-shadow: 0 1px 12px rgba(0,0,0,0.04);
            transition: var(--transition);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.5px;
        }
        .logo i { color: var(--primary); font-size: 1.4rem; }
        .logo:hover { color: var(--primary); transform: scale(1.02); }
        .nav { display: flex; align-items: center; gap: 8px; }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            transition: var(--transition);
        }
        .nav a:hover { color: var(--primary); background: rgba(229,57,53,0.06); }
        .nav a.active {
            color: var(--primary-dark);
            background: rgba(229,57,53,0.10);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute; bottom: 2px; left: 18px; right: 18px;
            height: 3px; background: var(--primary); border-radius: 4px;
        }
        .nav-cta { margin-left: 12px; }
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 10px 28px; border-radius: var(--radius-md);
            font-weight: 600; font-size: 0.95rem;
            border: none; cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-accent {
            background: var(--accent); color: #fff;
            box-shadow: 0 4px 14px rgba(255,143,0,0.35);
        }
        .btn-accent:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,143,0,0.45); }
        .btn-primary-custom {
            background: var(--primary); color: #fff;
            box-shadow: 0 4px 14px rgba(229,57,53,0.30);
        }
        .btn-primary-custom:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(229,57,53,0.40); }
        .btn-outline {
            background: transparent; color: var(--text-dark);
            border: 2px solid var(--border-color);
        }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); background: rgba(229,57,53,0.04); }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--text-dark); cursor: pointer; padding: 4px 8px; }

        /* ===== Hero / Banner (分类页) ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            overflow: hidden;
            min-height: 340px;
            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: 0.20;
            mix-blend-mode: overlay;
        }
        .category-hero .container { position: relative; z-index: 2; }
        .category-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            text-shadow: 0 4px 24px rgba(0,0,0,0.30);
        }
        .category-hero h1 i { color: var(--accent-light); margin-right: 12px; }
        .category-hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.85);
            max-width: 680px;
            margin-bottom: 24px;
            line-height: 1.8;
        }
        .category-hero .hero-tags {
            display: flex; flex-wrap: wrap; gap: 10px;
        }
        .category-hero .hero-tags span {
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid rgba(255,255,255,0.15);
        }
        .breadcrumb-custom {
            display: flex; align-items: center; gap: 8px;
            padding: 16px 0 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }
        .breadcrumb-custom a { color: rgba(255,255,255,0.8); }
        .breadcrumb-custom a:hover { color: #fff; }
        .breadcrumb-custom span { color: var(--accent-light); }

        /* ===== 板块通用 ===== */
        .section { padding: 72px 0; }
        .section-alt { background: var(--bg-white); }
        .section-light { background: var(--bg-light); }
        .section-dark { background: var(--bg-dark); color: rgba(255,255,255,0.85); }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 48px;
        }
        .section-dark .section-subtitle { color: rgba(255,255,255,0.7); }
        .text-center { text-align: center; }
        .mx-auto { margin-left: auto; margin-right: auto; }

        /* ===== 卡片系统 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .card-img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
        .card-body { padding: 24px; }
        .card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; color: var(--text-dark); }
        .card-text { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }
        .card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(229,57,53,0.08);
            color: var(--primary);
            border: 1px solid rgba(229,57,53,0.12);
        }
        .tag-alt { background: rgba(255,143,0,0.10); color: var(--accent-dark); border-color: rgba(255,143,0,0.18); }

        /* ===== 网格 ===== */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

        /* ===== 徽章 / 统计 ===== */
        .stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255,255,255,0.08);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.10);
            backdrop-filter: blur(4px);
        }
        .stat-item .num { font-size: 2.8rem; font-weight: 800; color: var(--accent-light); line-height: 1.2; }
        .stat-item .label { font-size: 1rem; color: rgba(255,255,255,0.8); margin-top: 6px; }

        /* ===== 图文区块 ===== */
        .feature-block { display: flex; align-items: center; gap: 48px; }
        .feature-block.reverse { flex-direction: row-reverse; }
        .feature-block .text { flex: 1; }
        .feature-block .media { flex: 1; }
        .feature-block .media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            padding: 20px 28px;
            margin-bottom: 16px;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-item .q { font-weight: 700; font-size: 1.05rem; color: var(--text-dark); cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
        .faq-item .q i { color: var(--primary); transition: var(--transition); }
        .faq-item .a { margin-top: 12px; color: var(--text-muted); line-height: 1.8; display: none; }
        .faq-item.open .a { display: block; }
        .faq-item.open .q i { transform: rotate(180deg); }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 64px 48px;
            border-radius: var(--radius-lg);
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-block .container { position: relative; z-index: 2; }
        .cta-block h2 { color: #fff; font-size: 2.2rem; margin-bottom: 16px; }
        .cta-block p { color: rgba(255,255,255,0.85); font-size: 1.1rem; margin-bottom: 28px; max-width: 600px; margin-left: auto; margin-right: auto; }
        .cta-block .btn { font-size: 1.1rem; padding: 14px 40px; }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            padding: 56px 0 0;
            color: rgba(255,255,255,0.75);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--accent-light); }
        .footer-brand p { font-size: 0.95rem; line-height: 1.8; color: rgba(255,255,255,0.65); }
        .footer-socials { display: flex; gap: 14px; }
        .footer-socials a { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 50%; background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.8); font-size: 1.2rem; transition: var(--transition); }
        .footer-socials a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .footer-col h4 { color: #fff; font-size: 1.1rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col a { display: block; color: rgba(255,255,255,0.7); font-size: 0.95rem; padding: 5px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--accent-light); transform: translateX(4px); }
        .footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; flex-wrap: wrap; gap: 12px; font-size: 0.9rem; color: rgba(255,255,255,0.5); }
        .footer-bottom a { color: rgba(255,255,255,0.6); }
        .footer-bottom a:hover { color: var(--accent-light); }
        .mt-16 { margin-top: 16px; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .feature-block { flex-direction: column !important; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            .nav-toggle { display: block; }
            .nav {
                position: fixed; top: var(--header-height); left: 0; right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav a { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); }
            .nav a.active::after { display: none; }
            .nav-cta { width: 100%; margin-left: 0; margin-top: 8px; }
            .nav-cta .btn { width: 100%; justify-content: center; }
            .category-hero h1 { font-size: 2.2rem; }
            .category-hero p { font-size: 1rem; }
            .section-title { font-size: 1.8rem; }
            .grid-2, .grid-3 { grid-template-columns: 1fr; }
            .stat-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .cta-block { padding: 40px 24px; }
            .cta-block h2 { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .category-hero { padding: 56px 0 48px; min-height: 260px; }
            .category-hero h1 { font-size: 1.7rem; }
            .grid-4 { grid-template-columns: 1fr; }
            .stat-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item .num { font-size: 2rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .section { padding: 48px 0; }
            .faq-item { padding: 16px 20px; }
        }

        /* ===== 工具类 ===== */
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .gap-16 { gap: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .mb-48 { margin-bottom: 48px; }
        .mt-24 { margin-top: 24px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .rounded-full { border-radius: 9999px; }
        .shadow-hover:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }

        /* ===== 分类页特定 ===== */
        .subcat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        @media (max-width: 768px) { .subcat-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 480px) { .subcat-grid { grid-template-columns: 1fr; } }

        .subcat-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .subcat-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
        .subcat-card .icon { font-size: 2.6rem; color: var(--primary); margin-bottom: 12px; }
        .subcat-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 6px; }
        .subcat-card p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 0; }

        .news-list { display: flex; flex-direction: column; gap: 20px; }
        .news-item {
            display: flex; align-items: flex-start; gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .news-item:hover { box-shadow: var(--shadow-hover); transform: translateX(4px); }
        .news-item .date { color: var(--text-light); font-size: 0.85rem; min-width: 72px; font-weight: 500; }
        .news-item .info { flex: 1; }
        .news-item .info h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
        .news-item .info p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 0; }
        .news-item .badge { background: rgba(229,57,53,0.08); color: var(--primary); padding: 2px 12px; border-radius: 40px; font-size: 0.8rem; font-weight: 500; }
        @media (max-width: 600px) { .news-item { flex-direction: column; gap: 8px; padding: 16px; } }