/* roulang page: index */
:root {
  --primary: #0f0f1a;
  --primary-light: #1a1a2e;
  --accent: #c9a961;
  --accent-hover: #dbb96f;
  --accent-light: #f5e6c8;
  --bg-white: #ffffff;
  --bg-light: #f7f5f0;
  --bg-dark: #0f0f1a;
  --text-primary: #1a1a2e;
  --text-secondary: #555555;
  --text-light: #999999;
  --text-white: #ffffff;
  --border-light: #e8e3dc;
  --border-accent: #c9a961;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); color: var(--text-primary); background: var(--bg-white); line-height: 1.7; font-size: 16px; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
button { cursor: pointer; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.3; color: var(--text-primary); }
h1 { font-size: 2.8rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.1rem; }
p { margin-bottom: 0.6rem; color: var(--text-secondary); }

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

/* ===== Header / Nav ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
}
.logo { font-size: 1.4rem; font-weight: 700; letter-spacing: 0.5px; color: var(--primary); }
.logo span { color: var(--accent); }
.nav-main { display: flex; align-items: center; gap: 36px; }
.nav-main a {
  font-size: 0.95rem; color: var(--text-secondary); position: relative;
  padding: 4px 0; letter-spacing: 0.3px;
}
.nav-main a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 2px; background: var(--accent); border-radius: 2px;
  transform: scaleX(0); transition: transform var(--transition);
}
.nav-main a:hover { color: var(--primary); }
.nav-main a:hover::after { transform: scaleX(1); }
.nav-main a.active { color: var(--primary); font-weight: 600; }
.nav-main a.active::after { transform: scaleX(1); }
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: var(--primary) !important;
  padding: 8px 22px !important; border-radius: 40px;
  font-weight: 600; font-size: 0.9rem !important; letter-spacing: 0.3px;
  transition: var(--transition);
}
.nav-cta:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.nav-cta::after { display: none !important; }
.menu-toggle { display: none; font-size: 1.5rem; color: var(--primary); padding: 4px; }

/* ===== Hero ===== */
.hero {
  min-height: 92vh; display: flex; align-items: center;
  background: linear-gradient(135deg, rgba(15,15,26,0.88) 0%, rgba(26,26,46,0.76) 100%),
              url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: var(--text-white); padding: 100px 0 80px; margin-top: var(--header-h);
  position: relative; overflow: hidden;
}
.hero::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 160px; background: linear-gradient(to top, var(--bg-white), transparent);
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero-badge {
  display: inline-block; background: rgba(201,169,97,0.2); border: 1px solid rgba(201,169,97,0.35);
  color: var(--accent); padding: 6px 18px; border-radius: 40px;
  font-size: 0.85rem; letter-spacing: 1px; margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.hero h1 { font-size: 3.6rem; font-weight: 700; color: var(--text-white); line-height: 1.15; margin-bottom: 18px; }
.hero h1 span { color: var(--accent); }
.hero p { font-size: 1.15rem; color: rgba(255,255,255,0.75); max-width: 580px; margin-bottom: 32px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--accent); color: var(--primary); padding: 14px 34px;
  border-radius: 40px; font-weight: 600; font-size: 1rem;
  transition: var(--transition); letter-spacing: 0.3px;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(201,169,97,0.35); }
.btn-outline {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1.5px solid rgba(255,255,255,0.3); color: var(--text-white);
  padding: 14px 34px; border-radius: 40px; font-weight: 500; font-size: 1rem;
  transition: var(--transition); letter-spacing: 0.3px;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(201,169,97,0.08); }

/* ===== Sections ===== */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-light); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-title {
  text-align: center; margin-bottom: 52px;
}
.section-title h2 { font-size: 2.2rem; margin-bottom: 12px; }
.section-title .subtitle { color: var(--text-secondary); max-width: 540px; margin: 0 auto; font-size: 1rem; }
.section-dark .section-title h2 { color: var(--text-white); }
.section-dark .section-title .subtitle { color: rgba(255,255,255,0.6); }

/* ===== Intro ===== */
.intro-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.intro-image {
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); position: relative;
}
.intro-image img { width: 100%; height: 400px; object-fit: cover; transition: transform 0.6s ease; }
.intro-image:hover img { transform: scale(1.03); }
.intro-text h3 { font-size: 1.6rem; margin-bottom: 16px; }
.intro-text p { margin-bottom: 14px; font-size: 1rem; }
.intro-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.tag {
  display: inline-block; background: var(--accent-light); color: var(--primary);
  padding: 6px 16px; border-radius: 40px; font-size: 0.85rem; font-weight: 500;
}

/* ===== Category Cards ===== */
.cat-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.cat-card {
  background: var(--bg-white); border-radius: var(--radius-md);
  overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition);
  border: 1px solid var(--border-light);
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.cat-card-img { height: 180px; overflow: hidden; position: relative; }
.cat-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.cat-card:hover .cat-card-img img { transform: scale(1.06); }
.cat-card-body { padding: 20px 24px 24px; }
.cat-card-body h3 { font-size: 1.15rem; margin-bottom: 6px; }
.cat-card-body p { font-size: 0.92rem; color: var(--text-secondary); margin-bottom: 14px; }
.cat-card-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--accent); font-weight: 600; font-size: 0.9rem;
}
.cat-card-link i { font-size: 0.75rem; transition: var(--transition); }
.cat-card-link:hover i { transform: translateX(4px); }

/* ===== News / CMS List ===== */
.news-list { display: grid; grid-template-columns: 1fr; gap: 18px; }
.news-item {
  display: flex; align-items: center; gap: 20px;
  background: var(--bg-white); padding: 20px 24px;
  border-radius: var(--radius-md); border: 1px solid var(--border-light);
  transition: var(--transition); cursor: default;
}
.news-item:hover { box-shadow: var(--shadow-sm); border-color: var(--border-accent); transform: translateX(4px); }
.news-badge {
  flex-shrink: 0; background: var(--accent-light); color: var(--primary);
  padding: 4px 14px; border-radius: 40px; font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.3px;
}
.news-info { flex: 1; min-width: 0; }
.news-info h4 { font-size: 1rem; margin-bottom: 4px; font-weight: 500; }
.news-info .meta { font-size: 0.83rem; color: var(--text-light); display: flex; gap: 16px; flex-wrap: wrap; }
.news-info .meta span { display: inline-flex; align-items: center; gap: 4px; }
.news-link {
  flex-shrink: 0; color: var(--accent); font-weight: 600; font-size: 0.9rem;
  display: inline-flex; align-items: center; gap: 6px;
}
.news-link i { font-size: 0.75rem; transition: var(--transition); }
.news-link:hover i { transform: translateX(4px); }
.news-empty { text-align: center; padding: 40px 20px; color: var(--text-secondary); font-size: 1rem; background: var(--bg-light); border-radius: var(--radius-md); }

/* ===== Process / Steps ===== */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; counter-reset: step; }
.step-card {
  text-align: center; padding: 32px 20px;
  background: var(--bg-white); border-radius: var(--radius-md);
  border: 1px solid var(--border-light); transition: var(--transition);
  position: relative;
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.step-num {
  width: 52px; height: 52px; margin: 0 auto 16px;
  background: var(--accent-light); color: var(--accent);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; font-weight: 700; transition: var(--transition);
}
.step-card:hover .step-num { background: var(--accent); color: var(--primary); }
.step-card h4 { font-size: 1.05rem; margin-bottom: 6px; }
.step-card p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0; }

/* ===== Stats ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat-card {
  text-align: center; padding: 36px 16px; border-radius: var(--radius-md);
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
}
.stat-card:hover { background: rgba(255,255,255,0.08); border-color: rgba(201,169,97,0.3); }
.stat-number { font-size: 2.4rem; font-weight: 700; color: var(--accent); margin-bottom: 4px; }
.stat-label { font-size: 0.92rem; color: rgba(255,255,255,0.6); }

/* ===== FAQ ===== */
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--border-light); border-radius: var(--radius-md);
  overflow: hidden; transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-accent); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; font-weight: 500; font-size: 1rem;
  cursor: pointer; background: var(--bg-white); transition: var(--transition);
  gap: 12px;
}
.faq-question i { color: var(--accent); font-size: 0.85rem; transition: var(--transition); flex-shrink: 0; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.8;
}
.faq-item.active .faq-answer { max-height: 260px; padding: 0 24px 20px; }

/* ===== CTA ===== */
.cta-section {
  text-align: center; padding: 80px 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.08; filter: blur(2px);
}
.cta-content { position: relative; z-index: 2; max-width: 620px; margin: 0 auto; }
.cta-content h2 { color: var(--text-white); font-size: 2rem; margin-bottom: 14px; }
.cta-content p { color: rgba(255,255,255,0.65); margin-bottom: 28px; font-size: 1.05rem; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-actions .btn-primary { background: var(--accent); color: var(--primary); }
.cta-actions .btn-primary:hover { background: var(--accent-hover); }
.cta-actions .btn-outline { border-color: rgba(255,255,255,0.25); color: var(--text-white); }
.cta-actions .btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* ===== Footer ===== */
.site-footer {
  background: var(--primary); color: rgba(255,255,255,0.6);
  padding: 48px 0 32px; border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand .logo { color: var(--text-white); font-size: 1.2rem; margin-bottom: 10px; display: inline-block; }
.footer-brand p { font-size: 0.9rem; max-width: 320px; color: rgba(255,255,255,0.5); }
.footer-links h4 { color: var(--text-white); font-size: 0.95rem; margin-bottom: 14px; font-weight: 600; }
.footer-links a { display: block; font-size: 0.88rem; color: rgba(255,255,255,0.5); padding: 4px 0; }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.4); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .cat-cards { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  h1 { font-size: 2.4rem; }
  .hero h1 { font-size: 2.8rem; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .nav-main { display: none; position: absolute; top: var(--header-h); left: 0; right: 0;
    background: var(--bg-white); border-bottom: 1px solid var(--border-light);
    flex-direction: column; padding: 16px 24px; gap: 12px;
    box-shadow: var(--shadow-md);
  }
  .nav-main.open { display: flex; }
  .nav-main a { padding: 8px 0; font-size: 1rem; }
  .nav-cta { justify-content: center; }
  .menu-toggle { display: block; }
  .hero { min-height: 70vh; padding: 80px 0 60px; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .section { padding: 56px 0; }
  .section-title { margin-bottom: 36px; }
  .section-title h2 { font-size: 1.7rem; }
  .cat-cards { grid-template-columns: 1fr; gap: 20px; }
  .news-item { flex-direction: column; align-items: stretch; gap: 12px; padding: 16px 18px; }
  .news-badge { align-self: flex-start; }
  .news-link { align-self: flex-end; }
  .steps-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-number { font-size: 1.8rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .faq-question { padding: 14px 18px; font-size: 0.95rem; }
  .cta-section { padding: 56px 0; }
  .cta-content h2 { font-size: 1.6rem; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 0.92rem; }
  .btn-primary, .btn-outline { padding: 12px 24px; font-size: 0.9rem; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .intro-image img { height: 240px; }
  .cat-card-img { height: 140px; }
  h2 { font-size: 1.4rem; }
}

/* ===== Utilities ===== */
.text-accent { color: var(--accent); }
.text-center { text-align: center; }
.mt-8 { margin-top: 32px; }
.mb-8 { margin-bottom: 32px; }
.gap-4 { gap: 16px; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #d4a017;
            --primary-dark: #b8860b;
            --primary-light: #f0d060;
            --primary-gradient: linear-gradient(135deg, #d4a017 0%, #f0d060 50%, #d4a017 100%);
            --secondary: #1a1a2e;
            --secondary-light: #2a2a4e;
            --bg-dark: #0d0d1a;
            --bg-card: #14142a;
            --bg-elevated: #1c1c3a;
            --bg-body: #0a0a16;
            --text-primary: #f5f0e8;
            --text-secondary: #c4bca8;
            --text-muted: #8a8478;
            --border-color: rgba(212, 160, 23, 0.15);
            --border-light: rgba(255, 255, 255, 0.06);
            --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(212, 160, 23, 0.15);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            background: var(--bg-body);
            color: var(--text-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            border: none;
            outline: none;
            background: transparent;
        }
        button {
            cursor: pointer;
        }
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-display);
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
        }

        h1 {
            font-size: clamp(2.2rem, 5.5vw, 4rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.6rem);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(1.2rem, 2.2vw, 1.6rem);
        }
        h4 {
            font-size: 1.15rem;
        }

        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 13, 26, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

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

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .logo span {
            background: none;
            -webkit-text-fill-color: var(--primary);
            color: var(--primary);
            font-weight: 900;
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-main a {
            color: var(--text-secondary);
            font-size: 0.92rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-main a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-gradient);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-main a:hover {
            color: var(--text-primary);
        }
        .nav-main a:hover::after {
            width: 100%;
        }
        .nav-main a.active {
            color: var(--primary);
        }
        .nav-main a.active::after {
            width: 100%;
        }
        .nav-main a.nav-cta {
            background: var(--primary-gradient);
            color: #0d0d1a;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            letter-spacing: 0.01em;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(212, 160, 23, 0.25);
        }
        .nav-main a.nav-cta::after {
            display: none;
        }
        .nav-main a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(212, 160, 23, 0.35);
            color: #0d0d1a;
        }
        .nav-main a.nav-cta i {
            margin-right: 6px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px;
            z-index: 1001;
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
        }

        @media (max-width: 820px) {
            .nav-toggle {
                display: block;
            }
            .nav-main {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--bg-card);
                flex-direction: column;
                align-items: flex-start;
                padding: 80px 32px 40px;
                gap: 20px;
                transition: var(--transition);
                box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
                border-left: 1px solid var(--border-light);
                overflow-y: auto;
            }
            .nav-main.open {
                right: 0;
            }
            .nav-main a {
                font-size: 1.05rem;
                width: 100%;
            }
            .nav-main a.nav-cta {
                text-align: center;
                width: 100%;
                margin-top: 8px;
            }
            .mobile-overlay {
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.6);
                z-index: 999;
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .mobile-overlay.active {
                opacity: 1;
                pointer-events: auto;
            }
        }

        /* ===== Banner ===== */
        .page-banner {
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 60px;
            min-height: 340px;
            display: flex;
            align-items: center;
            position: relative;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .page-banner .banner-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            z-index: 0;
        }
        .page-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 13, 26, 0.85) 0%, rgba(20, 20, 42, 0.7) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            margin-bottom: 16px;
            max-width: 720px;
        }
        .page-banner h1 .highlight {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 1.15rem;
            max-width: 600px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .page-banner .breadcrumb a {
            color: var(--text-muted);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--primary);
        }
        .page-banner .breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-dark);
        }
        .section-card {
            background: var(--bg-card);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .section-title {
            margin-bottom: 16px;
            max-width: 680px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin-bottom: 48px;
            line-height: 1.8;
        }

        .text-center .section-title,
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        .text-center .section-label::before {
            display: none;
        }

        /* ===== 玩法分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary-gradient);
            opacity: 0;
            transition: var(--transition);
        }
        .category-card:hover {
            border-color: rgba(212, 160, 23, 0.25);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card .icon-wrap {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(212, 160, 23, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .category-card:hover .icon-wrap {
            background: rgba(212, 160, 23, 0.2);
            transform: scale(1.05);
        }
        .category-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .category-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .category-card .tag-count {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(212, 160, 23, 0.1);
            padding: 4px 14px;
            border-radius: 50px;
        }

        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card {
                padding: 24px 18px 22px;
            }
        }

        /* ===== 详细玩法区块 ===== */
        .detail-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .detail-grid.reverse {
            direction: rtl;
        }
        .detail-grid.reverse>* {
            direction: ltr;
        }

        .detail-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            aspect-ratio: 4/3;
            background: var(--bg-elevated);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
        }
        .detail-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .detail-image:hover img {
            transform: scale(1.03);
        }
        .detail-image .img-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--primary);
            color: #0d0d1a;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.03em;
        }

        .detail-content {
            padding: 8px 0;
        }
        .detail-content h3 {
            font-size: 1.5rem;
            margin-bottom: 12px;
        }
        .detail-content .meta-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 16px;
        }
        .detail-content .meta-list span {
            font-size: 0.8rem;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            padding: 4px 14px;
            border-radius: 50px;
            border: 1px solid var(--border-light);
        }
        .detail-content .meta-list i {
            color: var(--primary);
            margin-right: 4px;
        }
        .detail-content p {
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .detail-content .feature-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 20px;
        }
        .detail-content .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .detail-content .feature-list li i {
            color: var(--primary);
            font-size: 0.8rem;
            margin-top: 5px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 10px 28px;
            border-radius: 50px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary-gradient);
            color: #0d0d1a;
            box-shadow: 0 4px 15px rgba(212, 160, 23, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(212, 160, 23, 0.35);
            color: #0d0d1a;
        }
        .btn-outline {
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-outline:hover {
            background: rgba(212, 160, 23, 0.1);
            transform: translateY(-2px);
            color: var(--primary-light);
        }
        .btn-sm {
            padding: 6px 18px;
            font-size: 0.82rem;
        }

        @media (max-width: 900px) {
            .detail-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .detail-grid.reverse {
                direction: ltr;
            }
            .detail-image {
                aspect-ratio: 16/9;
            }
            .detail-content h3 {
                font-size: 1.3rem;
            }
        }

        /* ===== 技巧与策略 ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .tip-card {
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .tip-card:hover {
            border-color: rgba(212, 160, 23, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .tip-card .tip-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: rgba(212, 160, 23, 0.12);
            position: absolute;
            top: 12px;
            right: 16px;
            line-height: 1;
            font-family: var(--font-display);
        }
        .tip-card h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }
        .tip-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
            position: relative;
            z-index: 1;
        }
        .tip-card .tip-icon {
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        @media (max-width: 900px) {
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .tips-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            padding: 32px 16px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: rgba(212, 160, 23, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .stat-item .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        @media (max-width: 820px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 420px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 24px 12px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(212, 160, 23, 0.15);
        }
        .faq-item.active {
            border-color: rgba(212, 160, 23, 0.25);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-primary);
            transition: var(--transition);
            background: transparent;
            width: 100%;
            text-align: left;
            border: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 0.8rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-box {
            background: var(--primary-gradient);
            border-radius: var(--radius-xl);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(212, 160, 23, 0.2);
        }
        .cta-box h2 {
            color: #0d0d1a;
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            margin-bottom: 12px;
        }
        .cta-box p {
            color: rgba(13, 13, 26, 0.7);
            font-size: 1.05rem;
            max-width: 520px;
            margin: 0 auto 28px;
        }
        .cta-box .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #0d0d1a;
            color: var(--text-primary);
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .cta-box .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
            color: var(--primary);
        }
        .cta-box .btn-cta i {
            transition: var(--transition);
        }
        .cta-box .btn-cta:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 640px) {
            .cta-box {
                padding: 40px 24px;
                border-radius: var(--radius-lg);
            }
            .cta-box .btn-cta {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-light);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-light);
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
            margin-bottom: 0;
        }
        .footer-links h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-links a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-links a i {
            margin-right: 6px;
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0 32px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        @media (max-width: 820px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .page-banner {
                min-height: 260px;
                padding-top: calc(var(--header-height) + 24px);
                padding-bottom: 40px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .detail-content .meta-list {
                gap: 8px;
            }
            .detail-content .meta-list span {
                font-size: 0.72rem;
                padding: 2px 10px;
            }
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeUp 0.7s ease forwards;
        }
        .animate-in-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-in-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-in-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-in-delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #c0392b;
            --primary-dark: #a93226;
            --primary-light: #e74c3c;
            --primary-bg: #fef5f3;
            --accent: #f39c12;
            --accent-dark: #d68910;
            --accent-light: #fdebd0;
            --bg-dark: #1a1a2e;
            --bg-darker: #0f0f1a;
            --bg-card: #16213e;
            --bg-section: #0f1a2e;
            --surface: #ffffff;
            --surface-alt: #f8f9fa;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888a8;
            --text-light: #f0f0f5;
            --text-white: #ffffff;
            --border-color: #e8e8f0;
            --border-light: #f0f0f8;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.07);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.1);
            --shadow-glow: 0 4px 30px rgba(192,57,43,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== 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: 1.7;
            color: var(--text-primary);
            background: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.4rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.015em; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1em; color: var(--text-secondary); }
        .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 860px; }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-h);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .logo {
            font-size: 1.65rem; font-weight: 800; letter-spacing: -0.03em;
            color: var(--text-primary); display: flex; align-items: center; gap: 2px;
        }
        .logo span { color: var(--primary); }
        .logo i { font-size: 1.3rem; color: var(--accent); margin-right: 6px; }
        .nav-main { display: flex; align-items: center; gap: 8px; }
        .nav-main a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.92rem; font-weight: 500; color: var(--text-secondary);
            position: relative; transition: var(--transition);
        }
        .nav-main a::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 0; height: 2.5px; border-radius: 4px;
            background: var(--primary); transition: var(--transition);
        }
        .nav-main a:hover { color: var(--primary); background: var(--primary-bg); }
        .nav-main a:hover::after { width: 60%; }
        .nav-main a.active { color: var(--primary); font-weight: 600; }
        .nav-main a.active::after { width: 60%; }
        .nav-main a.nav-cta {
            background: var(--primary); color: var(--text-white); border-radius: var(--radius-sm);
            padding: 8px 22px; font-weight: 600; margin-left: 6px;
        }
        .nav-main a.nav-cta::after { display: none; }
        .nav-main a.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-glow); }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
        .nav-toggle span { display: block; width: 26px; height: 2.5px; background: var(--text-primary); border-radius: 4px; transition: var(--transition); }
        .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .nav-toggle.open span:nth-child(2) { opacity: 0; }
        .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .nav-toggle { display: flex; }
            .nav-main {
                position: fixed; top: var(--header-h); left: 0; right: 0;
                flex-direction: column; background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px); padding: 20px 24px; gap: 6px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%); opacity: 0; pointer-events: none;
                transition: var(--transition); box-shadow: var(--shadow-lg);
            }
            .nav-main.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .nav-main a { width: 100%; padding: 14px 18px; font-size: 1rem; }
            .nav-main a::after { display: none; }
            .nav-main a.nav-cta { margin-left: 0; text-align: center; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            .container { padding: 0 16px; }
        }
        @media (max-width: 520px) {
            :root { --header-h: 64px; }
            h1 { font-size: 1.5rem; }
            h2 { font-size: 1.3rem; }
            .logo { font-size: 1.35rem; }
        }

        /* ===== 页面主体 ===== */
        .page-main { padding-top: var(--header-h); min-height: 80vh; }

        /* ===== 文章 banner ===== */
        .article-banner {
            position: relative; padding: 80px 0 60px;
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-card) 100%);
            overflow: hidden;
        }
        .article-banner::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12; mix-blend-mode: overlay;
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-breadcrumb {
            display: flex; align-items: center; gap: 10px; font-size: 0.9rem;
            color: rgba(255,255,255,0.6); margin-bottom: 24px; flex-wrap: wrap;
        }
        .article-breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-breadcrumb a:hover { color: var(--accent); }
        .article-breadcrumb .sep { color: rgba(255,255,255,0.35); }
        .article-breadcrumb .current { color: var(--accent-light); }
        .article-banner h1 {
            color: var(--text-white); font-size: 2.6rem; line-height: 1.25;
            max-width: 860px; margin-bottom: 20px; text-shadow: 0 2px 20px rgba(0,0,0,0.2);
        }
        .article-meta {
            display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
            color: rgba(255,255,255,0.7); font-size: 0.92rem;
        }
        .article-meta .tag {
            display: inline-block; padding: 4px 14px; border-radius: 20px;
            background: rgba(255,255,255,0.12); color: var(--accent-light);
            font-size: 0.82rem; font-weight: 500; border: 1px solid rgba(255,255,255,0.08);
        }
        .article-meta i { margin-right: 5px; opacity: 0.7; }
        @media (max-width: 768px) {
            .article-banner { padding: 60px 0 40px; }
            .article-banner h1 { font-size: 1.8rem; }
            .article-meta { gap: 12px; font-size: 0.85rem; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.4rem; }
            .article-banner { padding: 50px 0 30px; }
        }

        /* ===== 文章正文 ===== */
        .article-body-section { padding: 60px 0 80px; background: var(--surface); }
        .article-content {
            max-width: 860px; margin: 0 auto;
            font-size: 1.05rem; line-height: 1.85; color: var(--text-primary);
        }
        .article-content p { margin-bottom: 1.4em; }
        .article-content h2, .article-content h3, .article-content h4 {
            margin-top: 2em; margin-bottom: 0.8em; color: var(--text-primary);
        }
        .article-content h2 { font-size: 1.7rem; border-bottom: 2px solid var(--border-color); padding-bottom: 12px; }
        .article-content h3 { font-size: 1.3rem; }
        .article-content ul, .article-content ol { margin: 1em 0 1.4em 1.6em; color: var(--text-secondary); }
        .article-content li { margin-bottom: 0.5em; list-style: disc; }
        .article-content ol li { list-style: decimal; }
        .article-content strong { color: var(--text-primary); font-weight: 600; }
        .article-content a { color: var(--primary); border-bottom: 1px solid transparent; }
        .article-content a:hover { border-bottom-color: var(--primary); }
        .article-content blockquote {
            margin: 1.6em 0; padding: 20px 28px; background: var(--primary-bg);
            border-left: 4px solid var(--primary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary); font-style: normal;
        }
        .article-content blockquote p:last-child { margin-bottom: 0; }
        .article-content img { margin: 1.6em auto; border-radius: var(--radius-md); box-shadow: var(--shadow-md); }
        .article-content .content-image {
            display: flex; flex-direction: column; align-items: center; gap: 10px; margin: 1.6em 0;
        }
        .article-content .content-image img { margin: 0; }
        .article-content .content-image figcaption { font-size: 0.85rem; color: var(--text-muted); text-align: center; }
        .article-footer-meta {
            margin-top: 48px; padding-top: 28px; border-top: 1px solid var(--border-color);
            display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
        }
        .article-footer-meta .tags { display: flex; gap: 8px; flex-wrap: wrap; }
        .article-footer-meta .tags span {
            padding: 4px 14px; background: var(--primary-bg); border-radius: 20px;
            font-size: 0.82rem; color: var(--primary); font-weight: 500;
        }
        .article-footer-meta .share { display: flex; align-items: center; gap: 12px; color: var(--text-muted); font-size: 0.9rem; }
        .article-footer-meta .share a { color: var(--text-muted); font-size: 1.2rem; }
        .article-footer-meta .share a:hover { color: var(--primary); }
        .article-nav {
            margin-top: 32px; display: flex; justify-content: space-between; gap: 20px;
        }
        .article-nav a {
            padding: 14px 24px; border: 1px solid var(--border-color); border-radius: var(--radius-md);
            font-size: 0.95rem; font-weight: 500; color: var(--text-secondary);
            transition: var(--transition); flex: 1; text-align: center; max-width: 48%;
        }
        .article-nav a:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-bg); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
        .article-nav a i { margin: 0 6px; }
        .article-nav a.disabled { opacity: 0.35; pointer-events: none; }
        @media (max-width: 768px) {
            .article-body-section { padding: 40px 0 50px; }
            .article-content { font-size: 1rem; }
            .article-content h2 { font-size: 1.35rem; }
            .article-nav { flex-direction: column; }
            .article-nav a { max-width: 100%; }
        }

        /* ===== 内容未找到 ===== */
        .not-found-block {
            text-align: center; padding: 100px 24px; max-width: 600px; margin: 0 auto;
        }
        .not-found-block .icon { font-size: 4rem; color: var(--text-muted); margin-bottom: 24px; }
        .not-found-block h2 { font-size: 1.8rem; margin-bottom: 16px; }
        .not-found-block p { color: var(--text-muted); margin-bottom: 28px; font-size: 1.05rem; }
        .not-found-block .btn-back {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; background: var(--primary); color: var(--text-white);
            border-radius: var(--radius-sm); font-weight: 600; font-size: 1rem;
            transition: var(--transition);
        }
        .not-found-block .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-glow); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.8);
            padding: 60px 0 30px; margin-top: 0;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
        .footer-brand .logo { font-size: 1.6rem; color: var(--text-white); margin-bottom: 16px; }
        .footer-brand .logo span { color: var(--primary); }
        .footer-brand p { color: rgba(255,255,255,0.6); font-size: 0.92rem; line-height: 1.7; max-width: 360px; }
        .footer-links h4 { color: var(--text-white); font-size: 1rem; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.02em; }
        .footer-links a { display: block; color: rgba(255,255,255,0.6); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); }
        .footer-links a:hover { color: var(--accent); padding-left: 4px; }
        .footer-links a i { width: 20px; margin-right: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px;
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: rgba(255,255,255,0.45);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .site-footer { padding: 40px 0 24px; }
        }

        /* ===== 相关文章 ===== */
        .related-section { background: var(--surface-alt); padding: 60px 0; }
        .related-section h2 { margin-bottom: 36px; font-size: 1.6rem; text-align: center; }
        .related-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
        }
        .related-card {
            background: var(--surface); border-radius: var(--radius-md); overflow: hidden;
            border: 1px solid var(--border-color); transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary); }
        .related-card .card-img { height: 180px; overflow: hidden; }
        .related-card .card-img img { width: 100%; height: 100%; object-fit: cover; border-radius: 0; transition: var(--transition); }
        .related-card:hover .card-img img { transform: scale(1.05); }
        .related-card .card-body { padding: 20px 22px; }
        .related-card .card-body h3 { font-size: 1.05rem; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body p { font-size: 0.88rem; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; }
        .related-card .card-meta { display: flex; justify-content: space-between; align-items: center; font-size: 0.8rem; color: var(--text-muted); }
        .related-card .card-meta .tag { padding: 2px 12px; background: var(--primary-bg); color: var(--primary); border-radius: 12px; font-size: 0.75rem; font-weight: 500; }
        @media (max-width: 768px) {
            .related-grid { grid-template-columns: 1fr; gap: 16px; }
            .related-section { padding: 40px 0; }
            .related-section h2 { font-size: 1.3rem; }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }

        /* ===== 通用工具 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }

        /* ===== 响应式修正 ===== */
        @media (max-width: 1024px) {
            .article-banner h1 { font-size: 2.2rem; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.3rem; }
            .article-content { font-size: 0.95rem; }
            .article-content blockquote { padding: 14px 18px; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
            .related-card .card-img { height: 140px; }
            .not-found-block { padding: 60px 16px; }
            .not-found-block .icon { font-size: 3rem; }
        }