/* roulang page: index */
:root {
  --primary: #173B33;
  --primary-dark: #102B25;
  --accent: #EA7A3C;
  --accent-hover: #D8662F;
  --secondary: #5E6E66;
  --bg: #F5F3EE;
  --text: #222B26;
  --muted: #6B7770;
  --border: #E8E4DC;
  --success: #2A7F62;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 8px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-hover: 0 10px 24px rgba(0,0,0,0.08);
  --sidebar-w: 240px;
  --sidebar-w-sm: 72px;
  --header-h: 60px;
  --container: 1280px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 0.9375rem;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: all .2s ease; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 36px; }
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 12px;
  line-height: 1.3;
}
.section-title::before {
  content: '';
  display: block;
  width: 4px;
  height: 20px;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}
.section-link { color: var(--muted); font-size: 0.875rem; font-weight: 500; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--border); transition: all .25s ease; }
.section-link:hover { color: var(--primary); border-color: var(--primary); background: rgba(23,59,51,0.05); }

/* App Shell */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 60;
  transition: width .3s ease;
}
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
  min-height: 80px;
}
.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  flex-shrink: 0;
  letter-spacing: 0;
}
.logo-text { font-size: 1.05rem; font-weight: 800; color: var(--primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-nav { flex: 1; padding: 20px 12px; display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border-radius: 12px;
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
  transition: all .2s ease;
  white-space: nowrap;
}
.nav-item i { width: 20px; text-align: center; font-size: 1.05rem; flex-shrink: 0; }
.nav-item:hover { background: var(--border); color: var(--primary); }
.nav-item.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(23,59,51,0.25);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
}
.sidebar-footer { padding: 16px 12px 24px; border-top: 1px solid var(--border); }
.sidebar-login {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all .25s ease;
  white-space: nowrap;
}
.sidebar-login:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(234,122,60,0.3); }
.sidebar-login i { width: 20px; text-align: center; }

/* Main */
.main-content { margin-left: var(--sidebar-w); flex: 1; min-width: 0; display: flex; flex-direction: column; }

/* Mobile header */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  z-index: 70;
}
.menu-btn { font-size: 1.25rem; color: var(--text); padding: 8px; border-radius: 8px; }
.menu-btn:hover { background: var(--border); }
.mobile-logo { flex: 1; font-weight: 800; color: var(--primary); font-size: 1rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mobile-login { background: var(--accent); color: #fff; font-weight: 600; padding: 8px 16px; border-radius: 8px; font-size: 0.875rem; }
.mobile-login:hover { background: var(--accent-hover); }

/* Drawer */
.drawer-mask {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 79;
  opacity: 0;
  transition: opacity .3s ease;
}
.drawer-mask.open { opacity: 1; }
.drawer {
  display: none;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 280px;
  background: var(--bg);
  z-index: 80;
  transform: translateX(-100%);
  transition: transform .3s ease;
  flex-direction: column;
}
.drawer.open { transform: translateX(0); }
.drawer .drawer-logo { display: flex; align-items: center; gap: 12px; padding: 24px 20px; border-bottom: 1px solid var(--border); }
.drawer nav { flex: 1; padding: 20px 16px; display: flex; flex-direction: column; gap: 4px; }
.drawer .nav-item.active::before { left: -16px; }
.drawer-footer { padding: 16px; border-top: 1px solid var(--border); }

/* Hero */
.hero {
  position: relative;
  height: 74vh;
  min-height: 560px;
  max-height: 820px;
  background:
    linear-gradient(to top, rgba(16,43,37,0.92) 0%, rgba(16,43,37,0.55) 50%, rgba(16,43,37,0.72) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0.8;
}
.hero-content { width: 100%; padding: 0 24px 80px; max-width: 1280px; margin: 0 auto; position: relative; z-index: 2; }
.hero h1 { font-size: clamp(2.2rem, 4vw, 3.5rem); font-weight: 800; line-height: 1.15; letter-spacing: 0.5px; margin-bottom: 16px; max-width: 720px; }
.hero-sub { font-size: 1.125rem; color: rgba(245,243,238,0.85); max-width: 500px; margin-bottom: 32px; line-height: 1.6; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 28px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all .25s ease;
}
.btn i { font-size: 1rem; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(234,122,60,0.35); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(234,122,60,0.4); }
.btn-outline-light { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.65); }
.btn-outline-light:hover { border-color: #fff; background: rgba(255,255,255,0.1); transform: translateY(-2px); }
.hero-stats { display: flex; gap: 28px; flex-wrap: wrap; font-size: 0.8125rem; color: rgba(245,243,238,0.7); }
.hero-stats span { display: flex; align-items: center; gap: 6px; }
.hero-stats strong { font-size: 1.05rem; color: #fff; font-weight: 700; }

/* Scroll Cards */
.scroll-wrap { position: relative; }
.scroll-track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-behavior: smooth;
  padding: 8px 4px 20px;
  -webkit-overflow-scrolling: touch;
}
.scroll-track::-webkit-scrollbar { display: none; }
.scroll-track { scrollbar-width: none; }
.scroll-card {
  flex: 0 0 220px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 20px;
  text-align: center;
  transition: all .3s ease;
  box-shadow: var(--shadow-card);
}
.scroll-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-top: 3px solid var(--accent); }
.scroll-card .icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  background: rgba(23,59,51,0.08);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 16px;
  transition: all .3s ease;
}
.scroll-card:hover .icon { background: var(--primary); color: #fff; transform: scale(1.05); }
.scroll-card h3 { font-size: 1.0625rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.scroll-card p { font-size: 0.8125rem; color: var(--muted); line-height: 1.5; }
.scroll-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px; height: 40px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  z-index: 3;
  transition: all .2s ease;
}
.scroll-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.scroll-btn.left { left: -12px; }
.scroll-btn.right { right: -12px; }

/* Cards Grid */
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all .3s ease;
  display: block;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: var(--accent); }
.card-img { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.card:hover .card-img img { transform: scale(1.04); }
.card-badge {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.5px;
}
.card-body { padding: 18px 20px 20px; }
.card-body h3 { font-size: 1.125rem; font-weight: 600; color: var(--text); margin-bottom: 8px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.card-body h3:hover { color: var(--primary); }
.card-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.8125rem; color: var(--muted); }
.card-tag { background: rgba(23,59,51,0.06); color: var(--primary); padding: 3px 10px; border-radius: 999px; font-weight: 600; }

/* List Cards */
.list-cards { display: flex; flex-direction: column; gap: 16px; }
.list-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  transition: all .3s ease;
  box-shadow: var(--shadow-card);
}
.list-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: var(--accent); }
.list-card .thumb { width: 180px; height: 110px; border-radius: 12px; object-fit: cover; flex-shrink: 0; overflow: hidden; }
.list-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.list-card-info { flex: 1; min-width: 0; }
.list-card-info h3 { font-size: 1.0625rem; font-weight: 600; color: var(--text); margin-bottom: 6px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.list-card-info p { font-size: 0.8125rem; color: var(--muted); margin-bottom: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.list-card-info .meta { font-size: 0.8125rem; color: var(--muted); display: flex; align-items: center; gap: 12px; }
.list-card-info .meta i { color: var(--accent); }

/* News List */
.news-list { background: #fff; border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow-card); overflow: hidden; }
.news-list li { border-bottom: 1px solid var(--border); transition: background .2s ease; position: relative; }
.news-list li:last-child { border-bottom: none; }
.news-list li:hover { background: rgba(23,59,51,0.02); }
.news-list li:hover::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--accent); }
.news-list a { display: flex; align-items: center; gap: 20px; padding: 18px 24px; }
.news-date { flex-shrink: 0; width: 52px; text-align: center; background: rgba(23,59,51,0.04); border-radius: 12px; padding: 8px 0; }
.news-date .day { font-size: 1.5rem; font-weight: 800; color: var(--primary); line-height: 1.1; }
.news-date .month { font-size: 0.75rem; color: var(--muted); display: block; }
.news-title { flex: 1; font-size: 1rem; color: var(--text); font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.news-title:hover { color: var(--primary); }
.news-cat { background: rgba(234,122,60,0.1); color: var(--accent-hover); font-size: 0.75rem; font-weight: 600; padding: 4px 14px; border-radius: 999px; flex-shrink: 0; }
.news-empty { text-align: center; padding: 48px 24px; color: var(--muted); font-size: 0.9375rem; }
.news-empty i { font-size: 2.5rem; display: block; margin-bottom: 16px; color: var(--border); }

/* FAQ */
.faq-list { max-width: 800px; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 22px 4px;
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text);
  transition: color .25s ease;
}
.faq-q i { font-size: 0.875rem; color: var(--muted); transition: transform .3s ease; flex-shrink: 0; }
.faq-item.active .faq-q { color: var(--primary); }
.faq-item.active .faq-q i { transform: rotate(45deg); color: var(--accent); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p { padding: 0 4px 20px; color: var(--muted); font-size: 0.9375rem; line-height: 1.75; }

/* CTA */
.cta-section {
  background:
    radial-gradient(circle at 20% 50%, rgba(234,122,60,0.12) 0%, transparent 60%),
    var(--primary-dark);
  padding: 96px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '►';
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  font-size: 200px;
  color: rgba(255,255,255,0.04);
  line-height: 1;
}
.cta-section h2 { font-size: clamp(2rem, 3.5vw, 2.8rem); font-weight: 800; color: #fff; margin-bottom: 16px; line-height: 1.25; }
.cta-section p { color: rgba(245,243,238,0.75); font-size: 1.0625rem; margin-bottom: 36px; }
.cta-section .btn-primary { font-size: 1.0625rem; padding: 15px 36px; }

/* Footer */
.footer { background: var(--primary-dark); color: #A8B5AF; padding: 64px 0 0; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-brand .footer-logo .logo-mark { background: var(--accent); }
.footer-brand .footer-logo .logo-text { color: #fff; font-size: 1.1rem; }
.footer-brand p { font-size: 0.875rem; line-height: 1.75; max-width: 360px; color: #A8B5AF; }
.footer h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 20px; }
.footer-links ul { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { color: #A8B5AF; font-size: 0.875rem; transition: color .2s ease; }
.footer-links a:hover { color: var(--accent); }
.footer-contact p { display: flex; align-items: center; gap: 10px; font-size: 0.875rem; margin-bottom: 12px; }
.footer-contact i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 24px 0; font-size: 0.8125rem; color: rgba(168,181,175,0.6); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* Focus visible */
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(234,122,60,0.4);
  outline-offset: 2px;
}

/* Responsive */
@media (max-width: 1199.98px) {
  .sidebar { width: var(--sidebar-w-sm); }
  .sidebar .logo-text, .sidebar .nav-text, .sidebar .logo-text { display: none; }
  .sidebar-logo { justify-content: center; padding: 20px 0; }
  .sidebar-nav { padding: 16px 10px; }
  .nav-item { justify-content: center; padding: 14px; }
  .nav-item i { width: auto; font-size: 1.2rem; }
  .sidebar-login { justify-content: center; padding: 14px; }
  .sidebar-login i { width: auto; }
  .nav-item.active::before { left: -10px; }
  .main-content { margin-left: var(--sidebar-w-sm); }
  .section { padding: 72px 0; }
  .card-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 1023.98px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .drawer-mask { display: block; }
  .drawer { display: flex; }
  .main-content { margin-left: 0; padding-top: var(--header-h); }
  .hero { height: 64vh; min-height: 480px; }
  .hero-content { padding-bottom: 56px; }
  .section { padding: 48px 0; }
  .scroll-card { flex-basis: 190px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .list-card .thumb { width: 140px; height: 92px; }
  .list-card { padding: 12px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-section { padding: 64px 0; }
}
@media (max-width: 640px) {
  .card-grid { grid-template-columns: 1fr; }
  .scroll-card { flex-basis: 170px; }
  .list-card { flex-direction: column; align-items: flex-start; }
  .list-card .thumb { width: 100%; height: 160px; }
  .news-list a { flex-wrap: wrap; gap: 12px; padding: 16px; }
  .news-title { flex-basis: calc(100% - 70px); }
  .news-cat { margin-left: 70px; }
  .hero-cta { flex-direction: column; }
  .btn { width: 100%; }
  .hero-stats { gap: 16px; }
  .section-title { font-size: 1.375rem; }
  .logo-text { font-size: 0.95rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category1 */
:root {
            --primary: #173B33;
            --primary-deep: #102B25;
            --accent: #EA7A3C;
            --accent-hover: #D8662F;
            --secondary: #5E6E66;
            --bg: #F5F3EE;
            --text: #222B26;
            --text-light: #6B7770;
            --border: #E8E4DC;
            --success: #2A7F62;
            --white: #FFFFFF;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 10px 24px rgba(0, 0, 0, 0.08);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 8px;
            --font-title: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-title);
            background: var(--bg);
            color: var(--text);
            font-size: 0.9375rem;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        :focus-visible {
            outline: 3px solid rgba(234, 122, 60, 0.4);
            outline-offset: 2px;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Sidebar ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 240px;
            height: 100vh;
            background: var(--bg);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            z-index: 60;
            transition: width 0.3s, transform 0.3s;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 8px 24px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 20px;
        }
        .logo-mark {
            width: 42px;
            height: 42px;
            background: var(--primary);
            color: #fff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
            letter-spacing: 1px;
        }
        .logo-text {
            font-weight: 800;
            font-size: 0.95rem;
            color: var(--primary);
            line-height: 1.3;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 14px;
            border-radius: 10px;
            color: var(--text);
            font-weight: 600;
            transition: background 0.2s, color 0.2s;
            position: relative;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
            color: var(--secondary);
            transition: color 0.2s;
            flex-shrink: 0;
        }
        .nav-item:hover {
            background: var(--border);
        }
        .nav-item.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-item.active i {
            color: #fff;
        }
        .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 20%;
            width: 3px;
            height: 60%;
            background: var(--accent);
            border-radius: 0 3px 3px 0;
        }
        .sidebar-bottom {
            padding-top: 16px;
            border-top: 1px solid var(--border);
        }
        .login-btn {
            display: block;
            text-align: center;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            transition: background 0.2s, transform 0.2s;
        }
        .login-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
        }

        /* ===== Mobile header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            align-items: center;
            padding: 0 16px;
            z-index: 55;
            gap: 12px;
        }
        .menu-btn {
            background: none;
            font-size: 1.3rem;
            color: var(--primary);
            padding: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .mobile-logo {
            font-weight: 800;
            color: var(--primary);
            font-size: 0.92rem;
            flex: 1;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .mobile-login {
            background: var(--accent);
            color: #fff;
            padding: 6px 14px;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            white-space: nowrap;
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.4);
            z-index: 50;
        }
        .sidebar-overlay.show {
            display: block;
        }

        /* ===== Main ===== */
        .main-content {
            margin-left: 240px;
            min-height: 100vh;
            transition: margin-left 0.3s;
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 440px;
            background: linear-gradient(135deg, #102B25 0%, #173B33 60%, #1D4938 100%);
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.32;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(16, 43, 37, 0.2) 0%, rgba(16, 43, 37, 0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0;
            width: 100%;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(234, 122, 60, 0.15);
            color: var(--accent);
            border: 1px solid rgba(234, 122, 60, 0.3);
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 22px;
        }
        .hero-title {
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 16px;
        }
        .hero-title .highlight {
            color: var(--accent);
        }
        .hero-subtitle {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 580px;
            margin-bottom: 34px;
        }
        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
            font-size: 0.95rem;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(234, 122, 60, 0.3);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.85);
            color: #fff;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            transition: background 0.2s, border-color 0.2s, transform 0.2s;
            font-size: 0.95rem;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* ===== Sections ===== */
        .section {
            padding: 96px 0;
        }
        .section-sm {
            padding: 56px 0;
        }
        .section-title-wrap {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text);
            position: relative;
            padding-left: 24px;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--accent);
            border-radius: 2px;
        }
        .section-desc {
            color: var(--text-light);
            max-width: 660px;
            margin-bottom: 40px;
            font-size: 0.9375rem;
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            background: rgba(23, 59, 51, 0.08);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .feature-card p {
            color: var(--text-light);
            font-size: 0.85rem;
            line-height: 1.65;
        }

        /* ===== Game Cards ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .game-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }
        .game-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .game-card-media {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .game-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }
        .game-card:hover .game-card-media img {
            transform: scale(1.04);
        }
        .game-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }
        .game-card-body {
            padding: 20px;
        }
        .game-card-body h3 {
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.45;
            margin-bottom: 10px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 44px;
            transition: color 0.2s;
        }
        .game-card-body h3:hover {
            color: var(--accent);
        }
        .game-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-light);
            font-size: 0.8rem;
        }
        .game-card-meta i {
            color: var(--accent);
            font-size: 0.75rem;
        }

        /* ===== Scenario ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scenario-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 26px 20px;
            text-align: center;
            transition: transform 0.25s, box-shadow 0.25s;
        }
        .scenario-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .scenario-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            margin: 0 auto 14px;
        }
        .scenario-item h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text);
        }
        .scenario-item p {
            font-size: 0.8rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px 24px 24px;
            text-align: center;
            transition: transform 0.25s, box-shadow 0.25s;
        }
        .step-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            width: 42px;
            height: 42px;
            background: var(--accent);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            margin: 0 auto 16px;
        }
        .step-card h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .step-card p {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            position: relative;
            transition: background 0.2s;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }
        .faq-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 24px;
            width: 2px;
            height: 20px;
            background: var(--accent);
            border-radius: 2px;
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 8px;
            background: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: color 0.3s;
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-light);
            transition: transform 0.3s;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question {
            color: var(--primary);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.75;
            padding: 0 8px;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding-bottom: 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-deep);
            background-image: linear-gradient(135deg, rgba(234, 122, 60, 0.08) 0%, transparent 50%);
            color: #fff;
            text-align: center;
            padding: 80px 24px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '\f04b';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            font-size: 14rem;
            color: rgba(255, 255, 255, 0.04);
            top: -40px;
            right: 60px;
            transform: rotate(15deg);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(234, 122, 60, 0.1);
            bottom: -100px;
            left: -60px;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            font-size: 1rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-primary {
            font-size: 1rem;
            padding: 14px 34px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-deep);
            color: #A8B5AF;
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-logo .logo-mark {
            width: 38px;
            height: 38px;
            font-size: 0.9rem;
        }
        .footer-logo .logo-text {
            color: #fff;
            font-size: 0.95rem;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.75;
            color: #A8B5AF;
        }
        .footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul li a {
            color: #A8B5AF;
            font-size: 0.87rem;
            transition: color 0.2s, padding-left 0.2s;
        }
        .footer-links ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 0.87rem;
            color: #A8B5AF;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact p i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ===== Scrollbar hide ===== */
        .no-scrollbar::-webkit-scrollbar {
            display: none;
        }
        .no-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

        /* ===== Responsive ===== */
        @media (min-width: 1024px) and (max-width: 1199px) {
            .sidebar {
                width: 72px;
                padding: 24px 12px;
            }
            .logo {
                justify-content: center;
                padding: 8px 0 24px;
            }
            .logo-text {
                display: none;
            }
            .nav-item {
                justify-content: center;
                padding: 14px 0;
            }
            .nav-item i {
                font-size: 1.2rem;
            }
            .nav-text {
                display: none;
            }
            .nav-item.active::before {
                left: -12px;
            }
            .sidebar-bottom {
                display: none;
            }
            .main-content {
                margin-left: 72px;
            }
            .footer {
                margin-left: 72px;
            }
        }

        @media (max-width: 1023px) {
            .mobile-header {
                display: flex;
            }
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: 4px 0 24px rgba(0, 0, 0, 0.1);
            }
            .sidebar.open .logo-text {
                display: block;
            }
            .sidebar.open .nav-text {
                display: inline;
            }
            .sidebar.open .nav-item {
                justify-content: flex-start;
                padding: 12px 14px;
            }
            .sidebar.open .nav-item.active::before {
                left: 0;
            }
            .sidebar.open .sidebar-bottom {
                display: block;
            }
            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }
            .footer {
                margin-left: 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .section {
                padding: 72px 0;
            }
        }

        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .section {
                padding: 48px 0;
            }
            .hero-cta {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-cta .btn-primary,
            .hero-cta .btn-outline-light {
                justify-content: center;
            }
            .category-hero {
                min-height: 380px;
            }
            .section-title {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 480px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .game-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .container {
                padding: 0 16px;
            }
        }

/* roulang page: article */
/* ========== Design Tokens ========== */
        :root {
            --c-primary: #173B33;
            --c-accent: #EA7A3C;
            --c-muted: #5E6E66;
            --c-surface: #F5F3EE;
            --c-dark: #102B25;
            --c-ink: #222B26;
            --c-subtle: #6B7770;
            --c-line: #E8E4DC;
            --c-success: #2A7F62;
            --c-white: #FFFFFF;
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --radius-full: 999px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 10px 24px rgba(0, 0, 0, 0.08);
            --sidebar-width: 240px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 0.9375rem;
            line-height: 1.75;
            color: var(--c-ink);
            background: var(--c-surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        button {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(234, 122, 60, 0.4);
            outline-offset: 2px;
        }

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

        /* ========== Sidebar（桌面左侧导航） ========== */
        .sidebar {
            width: var(--sidebar-width);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            background: var(--c-surface);
            border-right: 1px solid var(--c-line);
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            z-index: 1000;
            transition: transform 0.3s ease;
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 4px 8px 24px;
            border-bottom: 1px solid var(--c-line);
            margin-bottom: 20px;
        }

        .logo-mark {
            width: 40px;
            height: 40px;
            min-width: 40px;
            border-radius: 12px;
            background: var(--c-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.875rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            box-shadow: 0 4px 12px rgba(23, 59, 51, 0.2);
        }

        .logo-text {
            font-size: 0.9375rem;
            font-weight: 700;
            color: var(--c-primary);
            line-height: 1.35;
            letter-spacing: 0.01em;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--c-ink);
            position: relative;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .nav-item i {
            width: 20px;
            text-align: center;
            color: var(--c-muted);
            transition: color 0.2s ease;
        }

        .nav-item:hover {
            background: var(--c-line);
        }

        .nav-item:hover i {
            color: var(--c-primary);
        }

        .nav-item.active {
            background: var(--c-primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-item.active i {
            color: #fff;
        }

        .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 18px;
            background: var(--c-accent);
            border-radius: 0 3px 3px 0;
        }

        .sidebar-login {
            margin-top: auto;
            padding-top: 16px;
            border-top: 1px solid var(--c-line);
        }

        .login-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
            padding: 10px 16px;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--c-primary);
            border: 1.5px solid var(--c-primary);
            border-radius: var(--radius-md);
            transition: all 0.25s ease;
        }

        .login-btn:hover {
            background: var(--c-primary);
            color: #fff;
        }

        /* ========== Main Content ========== */
        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        /* ========== Mobile Header ========== */
        .mobile-header {
            display: none;
            height: 60px;
            background: var(--c-surface);
            border-bottom: 1px solid var(--c-line);
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            position: sticky;
            top: 0;
            z-index: 990;
        }

        .burger-btn {
            font-size: 1.25rem;
            color: var(--c-primary);
            padding: 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }

        .burger-btn:hover {
            background: var(--c-line);
        }

        .mobile-logo {
            font-size: 0.9375rem;
            font-weight: 700;
            color: var(--c-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 200px;
        }

        .mobile-header-spacer {
            width: 36px;
            flex-shrink: 0;
        }

        /* ========== Overlay / Drawer ========== */
        .overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 990;
        }

        .overlay.show {
            display: block;
        }

        /* ========== Container ========== */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb {
            max-width: 760px;
            margin: 0 auto;
            padding: 32px 24px 0;
            font-size: 0.8125rem;
            color: var(--c-subtle);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--c-subtle);
        }

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

        .breadcrumb .sep {
            color: var(--c-line);
            font-size: 0.75rem;
        }

        .breadcrumb .current {
            color: var(--c-muted);
            max-width: 220px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ========== Article Wrap ========== */
        .article-wrap {
            max-width: 760px;
            margin: 0 auto;
            padding: 28px 24px 48px;
            width: 100%;
        }

        /* ========== Article Header ========== */
        .article-header {
            margin-bottom: 32px;
        }

        .article-header h1 {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            font-weight: 800;
            line-height: 1.3;
            color: var(--c-ink);
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.8125rem;
            color: var(--c-subtle);
            flex-wrap: wrap;
        }

        .article-meta .tag {
            display: inline-block;
            background: rgba(234, 122, 60, 0.12);
            color: #D8662F;
            padding: 4px 14px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.75rem;
            letter-spacing: 0.02em;
        }

        .article-meta .dot {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: var(--c-line);
            flex-shrink: 0;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta i {
            font-size: 0.75rem;
            color: var(--c-muted);
        }

        /* ========== Article Content ========== */
        .article-content {
            font-size: 1.0625rem;
            line-height: 1.85;
            color: var(--c-ink);
            word-wrap: break-word;
            overflow-wrap: break-word;
        }

        .article-content p {
            margin-bottom: 1.5em;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--c-primary);
            margin: 2em 0 0.75em;
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--c-ink);
            margin: 1.6em 0 0.6em;
        }

        .article-content h4 {
            font-size: 1.0625rem;
            font-weight: 600;
            margin: 1.4em 0 0.5em;
        }

        .article-content img {
            width: 100%;
            border-radius: var(--radius-lg);
            margin: 1.5em 0;
            box-shadow: var(--shadow-card);
        }

        .article-content blockquote {
            border-left: 3px solid var(--c-accent);
            background: var(--c-surface);
            padding: 18px 24px;
            margin: 1.5em 0;
            border-radius: 0 10px 10px 0;
            color: var(--c-muted);
            font-size: 0.9375rem;
        }

        .article-content ul,
        .article-content ol {
            margin: 1.5em 0;
            padding-left: 1.5em;
        }

        .article-content ul {
            list-style: disc;
        }

        .article-content ol {
            list-style: decimal;
        }

        .article-content li {
            margin-bottom: 0.5em;
            line-height: 1.7;
        }

        .article-content a {
            color: var(--c-accent);
            border-bottom: 1px solid rgba(234, 122, 60, 0.3);
        }

        .article-content a:hover {
            border-bottom-color: var(--c-accent);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 0.875rem;
            border-radius: 8px;
            overflow: hidden;
        }

        .article-content th,
        .article-content td {
            border: 1px solid var(--c-line);
            padding: 12px 14px;
            text-align: left;
            line-height: 1.5;
        }

        .article-content th {
            background: var(--c-surface);
            font-weight: 600;
            color: var(--c-primary);
            font-size: 0.8125rem;
            letter-spacing: 0.02em;
        }

        .article-content tr:nth-child(even) td {
            background: rgba(245, 243, 238, 0.5);
        }

        .article-content code {
            background: var(--c-surface);
            border: 1px solid var(--c-line);
            padding: 2px 8px;
            border-radius: 6px;
            font-family: "SF Mono", Consolas, "Courier New", monospace;
            font-size: 0.8125rem;
        }

        .article-content pre {
            background: var(--c-dark);
            color: #D8E0DC;
            padding: 20px 24px;
            border-radius: var(--radius-lg);
            overflow-x: auto;
            margin: 1.5em 0;
            line-height: 1.6;
            font-size: 0.875rem;
        }

        .article-content pre code {
            background: none;
            border: none;
            padding: 0;
            color: inherit;
            font-size: inherit;
        }

        .article-content hr {
            border: none;
            border-top: 1px solid var(--c-line);
            margin: 2em 0;
        }

        /* ========== Not Found ========== */
        .not-found {
            text-align: center;
            padding: 80px 24px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px dashed var(--c-line);
        }

        .not-found i {
            font-size: 3rem;
            color: var(--c-line);
            margin-bottom: 16px;
            display: block;
        }

        .not-found h2 {
            font-size: 1.375rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--c-ink);
        }

        .not-found p {
            color: var(--c-subtle);
            margin-bottom: 24px;
        }

        /* ========== Buttons ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--c-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(234, 122, 60, 0.25);
        }

        .btn-primary:hover {
            background: #D8662F;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(234, 122, 60, 0.3);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(234, 122, 60, 0.4);
            outline-offset: 2px;
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 10px 22px;
            border: 2px solid rgba(255, 255, 255, 0.7);
            border-radius: var(--radius-md);
            transition: all 0.25s ease;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ========== Article Nav ========== */
        .article-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid var(--c-line);
            flex-wrap: wrap;
        }

        .article-nav a {
            font-size: 0.875rem;
            color: var(--c-subtle);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 4px;
        }

        .article-nav a:hover {
            color: var(--c-accent);
        }

        .article-nav .nav-back {
            color: var(--c-primary);
            font-weight: 500;
            background: var(--c-surface);
            border: 1px solid var(--c-line);
            padding: 8px 18px;
            border-radius: var(--radius-md);
            transition: all 0.2s;
        }

        .article-nav .nav-back:hover {
            border-color: var(--c-primary);
            color: var(--c-primary);
        }

        /* ========== Related Section ========== */
        .related-section {
            background: #fff;
            border-top: 1px solid var(--c-line);
            padding: 56px 0 64px;
        }

        .section-title-block {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 28px;
        }

        .section-title-block::before {
            content: '';
            width: 4px;
            height: 20px;
            background: var(--c-accent);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .section-title-block h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--c-ink);
            line-height: 1.3;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--c-surface);
            border: 1px solid var(--c-line);
            border-radius: var(--radius-lg);
            padding: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--c-accent);
        }

        .related-thumb {
            width: 120px;
            height: 80px;
            min-width: 120px;
            border-radius: 10px;
            overflow: hidden;
            background: var(--c-line);
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.05);
        }

        .related-info h3 {
            font-size: 0.9375rem;
            font-weight: 600;
            line-height: 1.5;
            color: var(--c-ink);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }

        .related-card:hover .related-info h3 {
            color: var(--c-primary);
        }

        .related-date {
            font-size: 0.75rem;
            color: var(--c-subtle);
        }

        /* ========== Article CTA ========== */
        .article-cta {
            background: var(--c-dark);
            padding: 64px 24px;
            position: relative;
            overflow: hidden;
        }

        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 44px 44px;
            pointer-events: none;
        }

        .cta-inner {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-icon {
            font-size: 2.5rem;
            color: var(--c-accent);
            margin-bottom: 16px;
            opacity: 0.85;
            display: block;
        }

        .cta-inner h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .cta-inner p {
            color: #A8B5AF;
            font-size: 0.9375rem;
            margin-bottom: 28px;
        }

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

        /* ========== Footer ========== */
        .footer {
            background: var(--c-dark);
            color: #A8B5AF;
            padding: 48px 0 0;
        }

        .footer .container {
            max-width: 1280px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .logo-mark {
            background: var(--c-accent);
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 1rem;
        }

        .footer-brand p {
            font-size: 0.8125rem;
            line-height: 1.7;
            color: #A8B5AF;
            max-width: 360px;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-size: 0.9375rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
        }

        .footer-links ul li {
            margin-bottom: 10px;
        }

        .footer-links ul li a {
            font-size: 0.8125rem;
            color: #A8B5AF;
            transition: color 0.2s;
        }

        .footer-links ul li a:hover {
            color: var(--c-accent);
        }

        .footer-contact p {
            font-size: 0.8125rem;
            color: #A8B5AF;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            width: 16px;
            text-align: center;
            color: #7d8e86;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.75rem;
            color: rgba(168, 181, 175, 0.6);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ========== Responsive：平板（1024-1199px） ========== */
        @media (max-width: 1199px) and (min-width: 1024px) {
            :root {
                --sidebar-width: 72px;
            }

            .sidebar {
                padding: 24px 10px;
            }

            .sidebar-logo {
                justify-content: center;
                padding: 4px 0 24px;
            }

            .logo-text {
                display: none;
            }

            .nav-item {
                justify-content: center;
                padding: 14px;
            }

            .nav-item i {
                width: auto;
                font-size: 1.125rem;
            }

            .nav-text {
                display: none;
            }

            .login-btn {
                font-size: 1.125rem;
                padding: 12px;
            }

            .login-btn span {
                display: none;
            }

            .related-card {
                flex-direction: column;
                align-items: flex-start;
            }

            .related-thumb {
                width: 100%;
                height: 120px;
                min-width: 0;
            }
        }

        /* ========== Responsive：移动端（<1024px） ========== */
        @media (max-width: 1023px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }

            .sidebar.open {
                transform: translateX(0);
                box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
            }

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

            .mobile-header {
                display: flex;
            }

            .sidebar-logo {
                justify-content: flex-start;
            }

            .logo-text {
                display: inline;
            }

            .nav-item {
                justify-content: flex-start;
                padding: 12px 14px;
            }

            .nav-item i {
                width: 20px;
                font-size: 0.9375rem;
            }

            .nav-text {
                display: inline;
            }

            .login-btn {
                font-size: 0.875rem;
                padding: 10px 16px;
            }

            .login-btn span {
                display: inline;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .related-card {
                flex-direction: row;
                align-items: center;
            }

            .related-thumb {
                width: 140px;
                height: 92px;
                min-width: 140px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        /* ========== Responsive：小屏手机（<=640px） ========== */
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

            .breadcrumb {
                padding: 20px 16px 0;
            }

            .article-wrap {
                padding: 20px 16px 36px;
            }

            .related-thumb {
                width: 100px;
                height: 70px;
                min-width: 100px;
            }

            .related-info h3 {
                font-size: 0.875rem;
            }

            .article-nav {
                justify-content: center;
            }

            .article-nav .nav-prev,
            .article-nav .nav-next {
                flex: 1;
                min-width: 120px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }

            .cta-btns {
                flex-direction: column;
                align-items: center;
            }

            .btn-primary,
            .btn-outline-light {
                width: 100%;
                max-width: 280px;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
    :root {
      --primary: #173B33;
      --accent: #EA7A3C;
      --accent-hover: #D8662F;
      --muted: #5E6E66;
      --bg: #F5F3EE;
      --dark: #102B25;
      --text: #222B26;
      --text-weak: #6B7770;
      --border: #E8E4DC;
      --success: #2A7F62;
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-input: 8px;
      --shadow-card: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-hover: 0 10px 24px rgba(0,0,0,0.08);
      --font-stack: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    /* ===== 基础 Reset ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body {
      font-family: var(--font-stack);
      background: var(--bg);
      color: var(--text);
      line-height: 1.75;
      font-size: 0.9375rem;
    }
    a { text-decoration: none; color: inherit; }
    img { max-width: 100%; display: block; }
    button { font-family: inherit; cursor: pointer; border: none; background: none; }
    input, textarea { font-family: inherit; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4 { line-height: 1.3; color: var(--text); }
    .container { max-width: 1280px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
    .section { padding: 96px 0; }
    @media (max-width: 768px) { .section { padding: 72px 0; } }
    @media (max-width: 520px) { .section { padding: 48px 0; } }

    /* ===== 区块标题 ===== */
    .section-head { margin-bottom: 48px; }
    .section-head h2 {
      font-size: 1.75rem;
      font-weight: 700;
      position: relative;
      padding-left: 24px;
      margin-bottom: 12px;
    }
    .section-head h2::before {
      content: '';
      position: absolute;
      left: 0; top: 6px;
      width: 4px; height: 20px;
      background: var(--accent);
      border-radius: 2px;
    }
    .section-head p { color: var(--text-weak); font-size: 0.9375rem; margin-left: 24px; }
    @media (max-width: 520px) {
      .section-head h2 { font-size: 1.375rem; }
      .section-head p { font-size: 0.8125rem; }
    }

    /* ===== 侧边栏导航 ===== */
    .sidebar {
      position: fixed;
      top: 0; left: 0; bottom: 0;
      width: 240px;
      background: var(--bg);
      border-right: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      padding: 20px 16px;
      z-index: 100;
      transition: width 0.3s ease;
    }
    .sidebar-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 8px 24px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 16px;
    }
    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px; height: 40px;
      background: var(--primary);
      color: #fff;
      font-size: 0.875rem;
      font-weight: 700;
      border-radius: 12px;
      flex-shrink: 0;
      letter-spacing: 1px;
    }
    .logo-text {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--primary);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: 4px; }
    .sidebar-nav .nav-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 14px;
      border-radius: 12px;
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text);
      transition: background 0.2s, color 0.2s;
      position: relative;
    }
    .sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 1rem; }
    .sidebar-nav .nav-item:hover { background: var(--border); }
    .sidebar-nav .nav-item.active {
      background: var(--primary);
      color: #fff;
      font-weight: 600;
    }
    .sidebar-nav .nav-item.active::before {
      content: '';
      position: absolute;
      left: 0; top: 50%;
      transform: translateY(-50%);
      width: 3px; height: 20px;
      background: var(--accent);
      border-radius: 0 3px 3px 0;
    }
    .sidebar-bottom { padding-top: 12px; border-top: 1px solid var(--border); }
    .nav-login {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px 14px;
      color: var(--primary);
      font-size: 0.875rem;
      font-weight: 600;
      border-radius: 12px;
      transition: background 0.2s;
    }
    .nav-login:hover { background: var(--border); }
    .nav-login i { width: 20px; text-align: center; }

    /* ===== 主内容区 ===== */
    .main { margin-left: 240px; transition: margin-left 0.3s ease; min-height: 100vh; }

    /* ===== 顶栏（移动端） ===== */
    .topbar {
      display: none;
      height: 60px;
      background: var(--bg);
      border-bottom: 1px solid var(--border);
      align-items: center;
      justify-content: space-between;
      padding: 0 16px;
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .topbar-logo {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--primary);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 200px;
    }
    .menu-toggle { color: var(--primary); font-size: 1.25rem; padding: 8px; }
    .topbar-login { color: var(--primary); font-size: 1.125rem; padding: 8px; }

    /* ===== 抽屉 ===== */
    .drawer-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.4);
      z-index: 1100;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.3s, visibility 0.3s;
    }
    .drawer-overlay.show { opacity: 1; visibility: visible; }
    .drawer {
      position: fixed;
      top: 0; left: 0; bottom: 0;
      width: 280px;
      background: var(--bg);
      padding: 24px 16px;
      z-index: 1200;
      transform: translateX(-100%);
      transition: transform 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .drawer.open { transform: translateX(0); }
    .drawer-header {
      display: flex;
      align-items: center;
      gap: 10px;
      padding-bottom: 20px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 20px;
    }
    .drawer-header .logo-text { color: var(--primary); font-weight: 700; font-size: 0.9375rem; }
    .drawer-close { margin-left: auto; font-size: 1.5rem; color: var(--text-weak); padding: 4px; }
    .drawer-nav { flex: 1; display: flex; flex-direction: column; gap: 4px; }
    .drawer-nav .nav-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 14px;
      border-radius: 12px;
      color: var(--text);
      font-weight: 500;
    }
    .drawer-nav .nav-item i { width: 22px; text-align: center; }
    .drawer-nav .nav-item:hover { background: var(--border); }
    .drawer-nav .nav-item.active { background: var(--primary); color: #fff; }
    .drawer-login { padding-top: 16px; border-top: 1px solid var(--border); }
    .drawer-login .btn-primary { width: 100%; justify-content: center; }

    /* ===== 按钮 ===== */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--accent);
      color: #fff;
      font-weight: 600;
      padding: 12px 24px;
      border-radius: var(--radius-btn);
      font-size: 0.9375rem;
      transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
      border: none;
    }
    .btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(234,122,60,0.3); }
    .btn-primary:focus-visible { outline: 3px solid rgba(234,122,60,0.4); outline-offset: 2px; }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: var(--primary);
      border: 2px solid var(--primary);
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      font-size: 0.9375rem;
      transition: background 0.2s, transform 0.2s;
    }
    .btn-outline:hover { background: rgba(23,59,51,0.06); transform: translateY(-2px); }
    .btn-outline-light {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: #fff;
      border: 2px solid rgba(255,255,255,0.7);
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      font-size: 0.9375rem;
      transition: background 0.2s, transform 0.2s, border-color 0.2s;
    }
    .btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; transform: translateY(-2px); }

    /* ===== Hero ===== */
    .page-hero {
      position: relative;
      background: var(--dark);
      padding: 120px 0 80px;
      min-height: 520px;
      display: flex;
      align-items: center;
      overflow: hidden;
    }
    .hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.45;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(16,43,37,0.95) 20%, rgba(16,43,37,0.65) 60%, rgba(16,43,37,0.35) 100%);
    }
    .hero-track-line {
      position: absolute;
      bottom: 0; left: 0; right: 0;
      height: 100px;
      opacity: 0.08;
      background-image: radial-gradient(circle at 20px 20px, #fff 2px, transparent 2px);
      background-size: 40px 40px;
      pointer-events: none;
    }
    .hero-content { position: relative; z-index: 2; max-width: 720px; }
    .hero-tag {
      display: inline-block;
      background: rgba(234,122,60,0.2);
      color: #F5A77A;
      font-size: 0.8125rem;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 999px;
      margin-bottom: 24px;
      border: 1px solid rgba(234,122,60,0.3);
    }
    .hero-content h1 {
      color: #fff;
      font-size: clamp(2.2rem, 4vw, 3.2rem);
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 20px;
    }
    .hero-sub {
      color: rgba(255,255,255,0.85);
      font-size: 1rem;
      margin-bottom: 32px;
      max-width: 560px;
    }
    .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
    .hero-stats {
      display: flex;
      gap: 40px;
      border-top: 1px solid rgba(255,255,255,0.2);
      padding-top: 24px;
    }
    .hero-stats strong {
      display: block;
      font-size: 1.5rem;
      font-weight: 800;
      color: #fff;
    }
    .hero-stats span { font-size: 0.8125rem; color: rgba(255,255,255,0.6); }
    .hero-accent-line {
      position: absolute;
      bottom: 0; left: 24px; right: 24px;
      height: 2px;
      background: var(--accent);
      z-index: 2;
    }
    @media (max-width: 768px) {
      .page-hero { padding: 80px 0 56px; min-height: auto; }
      .hero-stats { gap: 24px; flex-wrap: wrap; }
    }

    /* ===== 内容方向卡片 ===== */
    .topic-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .topic-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 28px 24px;
      box-shadow: var(--shadow-card);
      transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    }
    .topic-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: var(--accent); }
    .topic-icon {
      width: 48px; height: 48px;
      background: rgba(23,59,51,0.08);
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 1.25rem;
      margin-bottom: 16px;
    }
    .topic-card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 8px; }
    .topic-card p { font-size: 0.875rem; color: var(--text-weak); line-height: 1.6; }
    @media (max-width: 1024px) { .topic-grid { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 520px) { .topic-grid { grid-template-columns: 1fr; } }

    /* ===== 热门百科混合版式 ===== */
    .hot-section { background: #fff; }
    .featured-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      align-items: start;
    }
    .featured-card {
      position: relative;
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-card);
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .featured-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
    .featured-card .featured-img { position: relative; height: 240px; overflow: hidden; }
    .featured-card .featured-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
    .featured-card:hover .featured-img img { transform: scale(1.04); }
    .featured-card .featured-img::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(0,0,0,0.35), transparent 60%);
    }
    .featured-badge {
      position: absolute;
      top: 16px; left: 16px;
      background: var(--accent);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 999px;
      z-index: 2;
    }
    .featured-body { padding: 20px 24px 24px; }
    .featured-body h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 8px; }
    .featured-body p { font-size: 0.875rem; color: var(--text-weak); margin-bottom: 16px; }
    .featured-link { color: var(--accent); font-size: 0.875rem; font-weight: 600; }
    .featured-link:hover { text-decoration: underline; }

    .featured-list { display: flex; flex-direction: column; gap: 12px; }
    .featured-list .featured-item {
      display: flex;
      align-items: center;
      gap: 16px;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 12px 16px;
      transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s;
    }
    .featured-list .featured-item:hover { border-color: var(--accent); box-shadow: var(--shadow-card); transform: translateX(4px); }
    .featured-list .fi-thumb {
      width: 72px; height: 54px;
      border-radius: 8px;
      overflow: hidden;
      flex-shrink: 0;
      background: var(--border);
    }
    .featured-list .fi-thumb img { width: 100%; height: 100%; object-fit: cover; }
    .featured-list .fi-info { flex: 1; min-width: 0; }
    .featured-list .fi-info h4 {
      font-size: 0.9375rem;
      font-weight: 600;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      margin-bottom: 2px;
    }
    .featured-list .fi-info span { font-size: 0.75rem; color: var(--text-weak); }
    .featured-list .fi-icon { color: var(--accent); font-size: 0.875rem; flex-shrink: 0; }
    @media (max-width: 768px) {
      .featured-wrap { grid-template-columns: 1fr; }
    }

    /* ===== 适用场景 ===== */
    .scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .scene-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 32px 28px;
      box-shadow: var(--shadow-card);
      transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
      position: relative;
    }
    .scene-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: var(--accent); }
    .scene-card .scene-index {
      font-size: 0.8125rem;
      color: var(--accent);
      font-weight: 700;
      letter-spacing: 2px;
      margin-bottom: 8px;
    }
    .scene-card h3 { font-size: 1.125rem; font-weight: 700; margin-bottom: 10px; }
    .scene-card p { font-size: 0.875rem; color: var(--text-weak); line-height: 1.65; }
    .scene-icon {
      width: 42px; height: 42px;
      background: rgba(234,122,60,0.12);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-size: 1.125rem;
      margin-bottom: 16px;
    }
    @media (max-width: 1024px) { .scene-grid { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 520px) { .scene-grid { grid-template-columns: 1fr; } }

    /* ===== 步骤流程 ===== */
    .step-section { background: var(--dark); }
    .step-section .section-head h2 { color: #fff; }
    .step-section .section-head h2::before { background: var(--accent); }
    .step-section .section-head p { color: rgba(255,255,255,0.6); }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .step-item {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: var(--radius-card);
      padding: 28px 24px;
      transition: background 0.3s, border-color 0.3s;
    }
    .step-item:hover { background: rgba(255,255,255,0.1); border-color: rgba(234,122,60,0.5); }
    .step-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1;
      margin-bottom: 16px;
      display: block;
    }
    .step-item h3 { color: #fff; font-size: 1.0625rem; font-weight: 600; margin-bottom: 8px; }
    .step-item p { color: rgba(255,255,255,0.6); font-size: 0.8125rem; }
    @media (max-width: 1024px) { .steps { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

    /* ===== FAQ ===== */
    .faq-list { max-width: 780px; }
    .faq-item {
      border-bottom: 1px solid var(--border);
      padding: 0;
    }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 22px 8px;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text);
      text-align: left;
      background: transparent;
      transition: color 0.2s;
      border-left: 2px solid transparent;
    }
    .faq-question:hover { color: var(--primary); }
    .faq-question .faq-arrow { color: var(--text-weak); font-size: 0.875rem; transition: transform 0.3s; flex-shrink: 0; }
    .faq-item.open .faq-question { color: var(--primary); border-left-color: var(--accent); }
    .faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--accent); }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      padding-left: 8px;
      padding-right: 8px;
    }
    .faq-answer-inner { padding-bottom: 20px; color: var(--text-weak); font-size: 0.875rem; line-height: 1.7; }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--dark);
      padding: 96px 0;
      position: relative;
      overflow: hidden;
    }
    .cta-section::before {
      content: '';
      position: absolute;
      right: -60px; top: -80px;
      width: 320px; height: 320px;
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 50%;
      pointer-events: none;
    }
    .cta-inner {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 720px;
    }
    .cta-inner h2 { color: #fff; font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; margin-bottom: 14px; }
    .cta-inner p { color: rgba(255,255,255,0.7); font-size: 0.9375rem; margin-bottom: 32px; }
    .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
    @media (max-width: 768px) { .cta-section { padding: 72px 0; } }
    @media (max-width: 520px) { .cta-section { padding: 48px 0; } }

    /* ===== 页脚 ===== */
    .footer {
      background: var(--dark);
      color: #A8B5AF;
      padding: 72px 0 32px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
    .footer-logo .logo-mark { background: var(--accent); }
    .footer-logo .logo-text { color: #fff; font-weight: 700; font-size: 1rem; }
    .footer-brand p { font-size: 0.8125rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 320px; }
    .footer h4 { color: #fff; font-size: 0.9375rem; font-weight: 600; margin-bottom: 16px; }
    .footer-links ul { display: flex; flex-direction: column; gap: 10px; }
    .footer-links a { font-size: 0.875rem; color: rgba(255,255,255,0.65); transition: color 0.2s; }
    .footer-links a:hover { color: var(--accent); }
    .footer-contact p { font-size: 0.875rem; color: rgba(255,255,255,0.65); margin-bottom: 10px; }
    .footer-contact i { width: 20px; margin-right: 6px; color: var(--accent); }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.12);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
      color: rgba(255,255,255,0.45);
      flex-wrap: wrap;
      gap: 12px;
    }
    @media (max-width: 768px) {
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }

    /* ===== 响应式侧边栏 ===== */
    /* 平板：1024px - 1199px 收缩为 72px 图标栏 */
    @media (min-width: 1024px) and (max-width: 1199px) {
      .sidebar { width: 72px; padding: 20px 12px; }
      .sidebar .logo-text { display: none; }
      .sidebar-brand { justify-content: center; }
      .sidebar-nav .nav-item { justify-content: center; padding: 14px; }
      .sidebar-nav .nav-item .nav-text { display: none; }
      .nav-login { justify-content: center; }
      .nav-login .nav-text { display: none; }
      .main { margin-left: 72px; }
    }
    /* 移动 < 1024px 隐藏侧边栏，显示顶栏 + 抽屉 */
    @media (max-width: 1023px) {
      .sidebar { display: none; }
      .main { margin-left: 0; }
      .topbar { display: flex; }
    }

    /* ===== 其他 ===== */
    .back-home-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--text-weak);
      font-size: 0.875rem;
      font-weight: 500;
      transition: color 0.2s;
      margin-top: 32px;
    }
    .back-home-link:hover { color: var(--accent); }
    .section-more {
      text-align: center;
      margin-top: 40px;
    }
    .section-more a {
      color: var(--primary);
      font-size: 0.875rem;
      font-weight: 600;
      transition: color 0.2s;
    }
    .section-more a:hover { color: var(--accent); text-decoration: underline; }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { transition: none !important; }
    }