/* roulang page: index */
:root {
  --primary: #4F46E5;
  --primary-dark: #4338CA;
  --primary-light: #EEF2FF;
  --accent: #F59E0B;
  --accent-light: #FEF3C7;
  --ink: #0F172A;
  --ink-soft: #334155;
  --muted: #64748B;
  --border: #E2E8F0;
  --bg: #F6F8FB;
  --card: #FFFFFF;
  --radius: 1rem;
  --radius-lg: 1.5rem;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06), 0 4px 16px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 10px rgba(15, 23, 42, 0.06), 0 16px 32px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 30px rgba(15, 23, 42, 0.10), 0 30px 60px rgba(15, 23, 42, 0.12);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
button, input { font: inherit; border: none; outline: none; }
.container-c { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-p { padding: 88px 0; }
.section-sm { padding: 56px 0; }

/* 导航 */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(226,232,240,.7);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; letter-spacing: -0.02em; }
.logo-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, #4F46E5, #7C3AED);
  color: #fff; font-size: 14px; font-weight: 800;
  box-shadow: 0 4px 12px rgba(79,70,229,.35);
}
.logo-text { color: var(--ink); }
.logo-text b { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 40px; list-style: none; }
.nav-link { font-size: .95rem; font-weight: 500; color: var(--ink-soft); position: relative; padding: 8px 0; }
.nav-link::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; border-radius: 2px;
  background: var(--primary); transition: width .25s ease;
}
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 16px; }
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: linear-gradient(135deg, #4F46E5, #6D28D9);
  color: #fff !important; font-weight: 600; font-size: .95rem;
  padding: 10px 22px; border-radius: 999px;
  box-shadow: 0 4px 16px rgba(79,70,229,.32);
  transition: all .25s ease; cursor: pointer;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,70,229,.42); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(79,70,229,.3); }
.btn-primary:focus-visible { outline: 3px solid rgba(79,70,229,.35); outline-offset: 2px; }
.btn-outline {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1.5px solid var(--border); color: var(--ink-soft); font-weight: 600; font-size: .95rem;
  padding: 10px 22px; border-radius: 999px; background: #fff;
  transition: all .25s ease; cursor: pointer;
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); transform: translateY(-1px); }
.btn-outline:focus-visible { outline: 3px solid rgba(79,70,229,.25); outline-offset: 2px; }
.btn-light {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: rgba(255,255,255,.15); color: #fff; font-weight: 600; font-size: .95rem;
  padding: 10px 24px; border-radius: 999px; backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.3); transition: all .25s ease; cursor: pointer;
}
.btn-light:hover { background: rgba(255,255,255,.28); transform: translateY(-2px); }
.search-box {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 999px;
  padding: 7px 16px; color: var(--muted); font-size: .85rem;
  transition: all .25s ease;
}
.search-box:focus-within { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 4px rgba(79,70,229,.1); }
.search-box input { background: transparent; border: none; width: 140px; color: var(--ink); font-size: .875rem; }
.search-box input::placeholder { color: var(--muted); }
.menu-toggle { display: none; background: none; font-size: 1.3rem; color: var(--ink); cursor: pointer; padding: 6px; }
.mobile-menu {
  display: none; background: #fff; border-top: 1px solid var(--border);
  padding: 16px 24px; position: absolute; left: 0; right: 0; top: 68px;
  box-shadow: var(--shadow-md); z-index: 99;
}
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 12px 0; font-size: 1rem; font-weight: 500; color: var(--ink-soft); border-bottom: 1px solid var(--border); }
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a.active { color: var(--primary); font-weight: 600; }

/* Hero */
.hero-section { position: relative; min-height: calc(100vh - 68px); display: flex; align-items: center; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(100deg, rgba(15,23,42,.95) 0%, rgba(15,23,42,.80) 40%, rgba(15,23,42,.55) 70%, rgba(15,23,42,.35) 100%); }
.hero-content { position: relative; z-index: 10; width: 100%; padding: 80px 0; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(245,158,11,.15); border: 1px solid rgba(245,158,11,.35);
  color: #FBBF24; font-size: .85rem; font-weight: 600;
  padding: 6px 16px; border-radius: 999px; margin-bottom: 24px;
}
.hero-title { font-size: clamp(2.4rem, 5.5vw, 4.2rem); line-height: 1.12; font-weight: 800; letter-spacing: -0.03em; color: #fff; margin-bottom: 20px; }
.hero-title .t-accent { color: #FBBF24; position: relative; }
.hero-desc { font-size: 1.12rem; line-height: 1.8; color: rgba(255,255,255,.85); max-width: 560px; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 40px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 32px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.15); }
.hstat-value { font-size: 1.6rem; font-weight: 800; color: #fff; }
.hstat-label { font-size: .85rem; color: rgba(255,255,255,.65); }
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; }
.hero-card-stack { position: relative; width: 100%; max-width: 480px; height: 460px; }
.stack-card {
  position: absolute; border-radius: 20px; overflow: hidden;
  box-shadow: var(--shadow-lg); transition: transform .3s ease;
}
.stack-card.s1 { top: 0; left: 0; width: 280px; transform: rotate(-6deg); z-index: 1; }
.stack-card.s2 { top: 80px; right: 0; width: 240px; transform: rotate(5deg); z-index: 2; }
.stack-card.s3 { bottom: 20px; left: 60px; width: 240px; transform: rotate(-2deg); z-index: 3; border: 3px solid rgba(255,255,255,.5); }
.stack-card img { width: 100%; height: 100%; object-fit: cover; }
.stack-card .sc-label {
  position: absolute; bottom: 12px; left: 12px; right: 12px;
  background: rgba(15,23,42,.72); backdrop-filter: blur(10px);
  color: #fff; font-size: .8rem; font-weight: 600;
  padding: 8px 14px; border-radius: 10px;
}
.stack-card.s1:hover { transform: rotate(-6deg) translateY(-6px); }
.stack-card.s2:hover { transform: rotate(5deg) translateY(-6px); }
.stack-card.s3:hover { transform: rotate(-2deg) translateY(-6px); }

/* 板块标签 */
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .85rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--primary); margin-bottom: 14px;
}
.section-label::before { content: ''; width: 24px; height: 2px; background: var(--primary); border-radius: 2px; }
.section-title { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.25; margin-bottom: 16px; }
.section-desc { font-size: 1.05rem; color: var(--muted); max-width: 640px; margin-bottom: 48px; line-height: 1.8; }

/* 信任栏 */
.trust-bar { background: #fff; border-bottom: 1px solid var(--border); padding: 28px 0; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.trust-item { display: flex; align-items: center; gap: 14px; }
.trust-item i { font-size: 1.4rem; color: var(--primary); width: 44px; height: 44px; border-radius: 12px; background: var(--primary-light); display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.trust-item .tt { font-weight: 700; font-size: .95rem; }
.trust-item .ts { font-size: .82rem; color: var(--muted); }

/* 卡片 */
.card {
  background: var(--card); border-radius: var(--radius); border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); transition: all .3s ease; overflow: hidden;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(79,70,229,.2); }
.card-img { width: 100%; height: 200px; object-fit: cover; }
.card-body { padding: 24px; }
.card-tag { display: inline-block; font-size: .75rem; font-weight: 700; color: var(--primary); background: var(--primary-light); padding: 4px 12px; border-radius: 999px; margin-bottom: 12px; }
.card-title { font-size: 1.08rem; font-weight: 700; line-height: 1.45; margin-bottom: 10px; color: var(--ink); }
.card-title:hover { color: var(--primary); }
.card-text { font-size: .9rem; color: var(--muted); line-height: 1.7; }

/* 稀有度边框卡片 */
.rarity-card { position: relative; background: #fff; border-radius: var(--radius-lg); padding: 28px; border: 1px solid var(--border); overflow: hidden; transition: all .3s ease; }
.rarity-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, #4F46E5, #7C3AED, #F59E0B);
}
.rarity-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.rarity-icon { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin-bottom: 18px; }
.r-type-a .rarity-icon { background: var(--primary-light); color: var(--primary); }
.r-type-b .rarity-icon { background: #FEF3C7; color: #D97706; }
.r-type-c .rarity-icon { background: #ECFDF5; color: #059669; }
.r-type-d .rarity-icon { background: #FDF2F8; color: #DB2777; }

/* 数据统计 */
.stats-section { background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 100%); position: relative; overflow: hidden; }
.stats-section::before { content: ''; position: absolute; top: -80px; right: -80px; width: 300px; height: 300px; background: radial-gradient(circle, rgba(79,70,229,.3), transparent 70%); border-radius: 50%; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; z-index: 2; }
.stat-card { text-align: center; padding: 36px 20px; border-radius: var(--radius); background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); backdrop-filter: blur(8px); transition: all .3s ease; }
.stat-card:hover { background: rgba(255,255,255,.12); transform: translateY(-4px); }
.stat-number { font-size: 2.6rem; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 8px; }
.stat-number em { font-style: normal; color: #FBBF24; }
.stat-label { font-size: .9rem; color: rgba(255,255,255,.7); }

/* 流程步骤 */
.step-item { display: flex; gap: 20px; padding: 24px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all .3s ease; }
.step-item:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.step-num {
  width: 44px; height: 44px; min-width: 44px; border-radius: 50%;
  background: linear-gradient(135deg, #4F46E5, #7C3AED); color: #fff;
  font-weight: 800; font-size: 1.1rem; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(79,70,229,.3);
}
.step-body h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.step-body p { font-size: .9rem; color: var(--muted); line-height: 1.7; }

/* FAQ */
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: 16px; margin-bottom: 14px; overflow: hidden; transition: box-shadow .3s ease; }
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-q { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; cursor: pointer; font-weight: 600; font-size: 1rem; }
.faq-q i { color: var(--primary); transition: transform .3s ease; font-size: .9rem; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p { padding: 0 24px 20px; font-size: .92rem; color: var(--muted); line-height: 1.8; }

/* CTA */
.cta-section { background-size: cover; background-position: center; position: relative; }
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,42,.92), rgba(79,70,229,.82)); }
.cta-inner { position: relative; z-index: 2; text-align: center; padding: 88px 24px; }
.cta-title { font-size: clamp(1.8rem, 3.4vw, 2.8rem); font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: -0.02em; }
.cta-desc { font-size: 1.05rem; color: rgba(255,255,255,.8); max-width: 560px; margin: 0 auto 32px; line-height: 1.8; }

/* 页脚 */
.site-footer { background: #0B1120; color: #94A3B8; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; padding: 64px 0 40px; }
.footer-brand .logo { color: #fff; font-size: 1.3rem; margin-bottom: 16px; }
.footer-brand p { font-size: .9rem; line-height: 1.8; max-width: 320px; }
.footer-title { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 20px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { font-size: .9rem; color: #94A3B8; transition: color .2s ease; }
.footer-links a:hover { color: #FBBF24; }
.footer-info p { font-size: .88rem; line-height: 1.9; margin-bottom: 8px; }
.footer-info p i { width: 20px; color: #6366F1; margin-right: 6px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 24px 0; display: flex; justify-content: space-between; align-items: center; font-size: .85rem; flex-wrap: wrap; gap: 12px; }
.footer-bottom a { color: #94A3B8; }

/* 文章列表 */
.post-list { display: flex; flex-direction: column; gap: 18px; }
.post-item {
  display: flex; gap: 20px; background: #fff; border: 1px solid var(--border);
  border-radius: 16px; padding: 20px; transition: all .3s ease; align-items: flex-start;
}
.post-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); border-color: rgba(79,70,229,.25); }
.post-thumb { width: 160px; height: 110px; border-radius: 12px; object-fit: cover; flex-shrink: 0; }
.post-info { flex: 1; min-width: 0; }
.post-meta { display: flex; align-items: center; gap: 12px; font-size: .8rem; color: var(--muted); margin-bottom: 6px; }
.post-cat { color: var(--primary); font-weight: 600; background: var(--primary-light); padding: 3px 10px; border-radius: 999px; font-size: .75rem; }
.post-title { font-size: 1.08rem; font-weight: 700; line-height: 1.5; margin-bottom: 6px; }
.post-title a:hover { color: var(--primary); }
.post-summary { font-size: .88rem; color: var(--muted); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-link { display: inline-flex; align-items: center; gap: 6px; font-size: .85rem; font-weight: 600; color: var(--primary); margin-top: 8px; }
.post-link i { transition: transform .2s ease; }
.post-link:hover i { transform: translateX(4px); }

/* 空状态 */
.empty-box { text-align: center; padding: 48px 20px; background: #fff; border: 1px dashed var(--border); border-radius: var(--radius); color: var(--muted); font-size: .95rem; }

/* 响应式 */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .menu-toggle { display: block; }
  .search-box { display: none !important; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .post-thumb { width: 130px; height: 90px; }
  .hero-card-stack { display: none; }
}
@media (max-width: 768px) {
  .container-c { padding: 0 18px; }
  .section-p { padding: 64px 0; }
  .hero-section { min-height: auto; }
  .hero-content { padding: 56px 0; }
  .hero-title { font-size: 2rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn-primary, .hero-actions .btn-light { justify-content: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-number { font-size: 2rem; }
  .post-item { flex-direction: column; }
  .post-thumb { width: 100%; height: 180px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .trust-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .hero-stats { gap: 20px; }
  .hstat-value { font-size: 1.3rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .nav-wrap { height: 60px; }
  .mobile-menu { top: 60px; }
}

/* roulang page: category1 */
:root {
  --primary: #6366F1;
  --primary-dark: #4F46E5;
  --primary-light: #EEF2FF;
  --accent: #F59E0B;
  --bg-light: #F8FAFC;
  --bg-white: #FFFFFF;
  --text-main: #1E293B;
  --text-weak: #64748B;
  --border: #E2E8F0;
  --radius-lg: 1.25rem;
  --radius-md: 0.875rem;
  --radius-sm: 0.5rem;
  --shadow-card: 0 4px 20px rgba(15, 23, 42, 0.06);
  --shadow-card-hover: 0 12px 32px rgba(15, 23, 42, 0.12);
  --shadow-hero: 0 20px 60px rgba(15, 23, 42, 0.15);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
button { border: none; cursor: pointer; font-family: inherit; }
input { font-family: inherit; outline: none; }

.container-c {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

@media (max-width: 768px) {
  .container-c { padding: 0 1.25rem; }
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #6366F1 0%, #4338CA 100%);
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.2;
}
.logo-text b { color: var(--primary); font-weight: 800; }

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-weak);
  transition: all 0.25s ease;
}

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

.nav-link.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.45rem 1rem;
  transition: all 0.25s ease;
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.search-box i {
  font-size: 0.8rem;
  color: var(--text-weak);
}

.search-box input {
  border: none;
  background: transparent;
  font-size: 0.88rem;
  width: 130px;
  color: var(--text-main);
}

.search-box input::placeholder { color: #94A3B8; }

.btn-sm {
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
}

.menu-toggle {
  display: none;
  background: transparent;
  font-size: 1.1rem;
  color: var(--text-main);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.menu-toggle:hover { background: var(--bg-light); }

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 0.75rem 0 1.25rem;
  border-top: 1px solid var(--border);
}
.mobile-menu a {
  padding: 0.7rem 0.5rem;
  border-radius: 8px;
  font-size: 1rem;
  color: var(--text-main);
}
.mobile-menu a.active { color: var(--primary); font-weight: 700; background: var(--primary-light); }

@media (max-width: 1024px) {
  .nav-wrap { gap: 1rem; }
  .search-box input { width: 90px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .menu-toggle { display: flex; }
  .search-box { display: none; }
  .mobile-menu.open { display: flex; }
  .nav-wrap { height: 68px; }
  .logo-icon { width: 38px; height: 38px; }
  .btn-sm { font-size: 0.82rem; padding: 0.42rem 0.9rem; }
}

/* ===== Hero ===== */
.category-hero {
  position: relative;
  padding: 6.5rem 0 5rem;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 41, 59, 0.78) 50%, rgba(99, 102, 241, 0.45) 100%);
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  color: #E2E8F0;
  font-size: 0.85rem;
  font-weight: 500;
  backdrop-filter: blur(8px);
  margin-bottom: 1.5rem;
}

.hero-badge i { color: #FBBF24; }

.category-hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
  max-width: 640px;
}

.category-hero p {
  font-size: 1.15rem;
  color: rgba(226, 232, 240, 0.9);
  max-width: 580px;
  line-height: 1.7;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.2rem;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, #6366F1, #4F46E5);
  color: #fff;
  font-weight: 600;
  padding: 0.8rem 1.7rem;
  border-radius: 999px;
  font-size: 0.95rem;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
  transition: all 0.3s ease;
}
.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(99, 102, 241, 0.5);
}

.btn-hero-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #E2E8F0;
  font-weight: 500;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  font-size: 0.95rem;
  transition: all 0.3s ease;
}
.btn-hero-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-top: 3.2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.hero-stat b {
  font-size: 1.7rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.hero-stat span {
  font-size: 0.82rem;
  color: rgba(226, 232, 240, 0.7);
}

@media (max-width: 768px) {
  .category-hero { padding: 4.5rem 0 3.5rem; }
  .category-hero h1 { font-size: 2.3rem; }
  .category-hero p { font-size: 1rem; }
  .hero-stats { gap: 1.5rem; }
  .hero-stat b { font-size: 1.3rem; }
}

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  padding: 0.65rem 0;
  font-size: 0.82rem;
  color: var(--text-weak);
}
.breadcrumb-bar a { color: var(--primary); }
.breadcrumb-bar i { margin: 0 0.5rem; font-size: 0.65rem; }

/* ===== Section Base ===== */
.section-block { padding: 5rem 0; }
.section-block.bg-light { background: var(--bg-light); }
.section-head { margin-bottom: 2.8rem; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 0.65rem;
}
.section-sub {
  font-size: 1.02rem;
  color: var(--text-weak);
  max-width: 680px;
}

@media (max-width: 768px) {
  .section-block { padding: 3.5rem 0; }
  .section-title { font-size: 1.55rem; }
}

/* ===== Overview ===== */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.overview-feature {
  list-style: none;
  margin-top: 1.5rem;
  display: grid;
  gap: 0.9rem;
}

.overview-feature li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-main);
}

.overview-feature li i {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.2rem;
}

.overview-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card-hover);
  aspect-ratio: 4/3;
}
.overview-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.overview-img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.25), transparent 50%);
}

.overview-badge-card {
  position: absolute;
  bottom: 1.2rem;
  left: 1.2rem;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  padding: 0.8rem 1.2rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  z-index: 2;
}

.overview-badge-card b { font-size: 1.05rem; color: var(--primary); }
.overview-badge-card span { font-size: 0.75rem; color: var(--text-weak); display: block; }

@media (max-width: 768px) {
  .overview-grid { grid-template-columns: 1fr; gap: 2rem; }
}

/* ===== Card Grid ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.guide-card {
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all 0.35s ease;
  display: flex;
  flex-direction: column;
}

.guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(99, 102, 241, 0.3);
}

.guide-card-img {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.guide-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.guide-card:hover .guide-card-img img { transform: scale(1.05); }
.guide-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.1), transparent 60%);
}

.guide-card-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  z-index: 2;
  backdrop-filter: blur(4px);
}

.guide-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.guide-card-body h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.guide-card-body p {
  font-size: 0.88rem;
  color: var(--text-weak);
  line-height: 1.65;
  flex: 1;
}

.guide-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-weak);
}

.guide-card-meta i { margin-right: 0.25rem; opacity: 0.6; }

@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .card-grid { grid-template-columns: 1fr; }
}

/* ===== Steps ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  counter-reset: step;
}

.step-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 1.8rem 1.5rem;
  position: relative;
  transition: all 0.3s ease;
}

.step-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
}

.step-card:nth-child(2) .step-num { background: #F0FDF4; color: #16A34A; }
.step-card:nth-child(3) .step-num { background: #FFF7ED; color: #F97316; }
.step-card:nth-child(4) .step-num { background: #FDF2F8; color: #EC4899; }

.step-card h3 {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 0.45rem;
  color: var(--text-main);
}

.step-card p {
  font-size: 0.86rem;
  color: var(--text-weak);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .steps-grid { grid-template-columns: 1fr; }
}

/* ===== Security Checklist ===== */
.checklist-wrap {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.check-item {
  display: flex;
  gap: 1rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.5rem;
  transition: all 0.3s ease;
}

.check-item:hover {
  border-color: rgba(16, 185, 129, 0.35);
  box-shadow: var(--shadow-card);
}

.check-item-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: #F0FDF4;
  color: #16A34A;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.check-item:nth-child(2) .check-item-icon { background: var(--primary-light); color: var(--primary); }
.check-item:nth-child(3) .check-item-icon { background: #FFF7ED; color: #F97316; }
.check-item:nth-child(4) .check-item-icon { background: #FDF2F8; color: #EC4899; }

.check-item h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.3rem;
}

.check-item p {
  font-size: 0.85rem;
  color: var(--text-weak);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .checklist-wrap { grid-template-columns: 1fr; }
}

/* ===== FAQ ===== */
.faq-wrap { max-width: 820px; margin: 0 auto; }

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 0.85rem;
  overflow: hidden;
  transition: all 0.25s ease;
}

.faq-item:hover { border-color: rgba(99, 102, 241, 0.3); }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: transparent;
  text-align: left;
  padding: 1.15rem 1.4rem;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-main);
}

.faq-question i {
  flex-shrink: 0;
  font-size: 0.8rem;
  color: var(--primary);
  transition: transform 0.3s ease;
  width: 28px;
  height: 28px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.faq-item.open .faq-question i { transform: rotate(180deg); }

.faq-answer {
  display: none;
  padding: 0 1.4rem 1.2rem;
  font-size: 0.9rem;
  color: var(--text-weak);
  line-height: 1.7;
}

.faq-item.open .faq-answer { display: block; }

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 5rem 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(79, 70, 229, 0.93) 0%, rgba(99, 102, 241, 0.88) 55%, rgba(139, 92, 246, 0.75) 100%);
}

.cta-section .container-c { position: relative; z-index: 2; text-align: center; }

.cta-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 1rem;
}

.cta-sub {
  font-size: 1.05rem;
  color: rgba(226, 232, 240, 0.95);
  max-width: 600px;
  margin: 0 auto 2.2rem;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.98rem;
  padding: 0.75rem 2rem;
  border-radius: 999px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
  transition: all 0.3s ease;
}
.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.22);
}

@media (max-width: 768px) {
  .cta-section { padding: 3.5rem 0; }
  .cta-title { font-size: 1.7rem; }
}

/* ===== Footer ===== */
.site-footer {
  background: #0F172A;
  color: #CBD5E1;
  padding: 4rem 0 0;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}

.footer-brand .logo { color: #fff; }

.footer-title {
  color: #F1F5F9;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: grid;
  gap: 0.45rem;
}

.footer-links a {
  color: #94A3B8;
  font-size: 0.85rem;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
}
.footer-links a:hover { color: #A5B4FC; transform: translateX(3px); }

.footer-info p {
  color: #94A3B8;
  font-size: 0.85rem;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.footer-info i { width: 16px; color: #818CF8; }

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.15);
  padding: 1.25rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  text-align: center;
}
.footer-bottom p { color: #64748B; font-size: 0.8rem; }

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  padding: 0.6rem 1.3rem;
  border-radius: 999px;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
  transform: translateY(-1px);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(99, 102, 241, 0.4);
  outline-offset: 2px;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text-main);
  font-weight: 600;
  padding: 0.6rem 1.3rem;
  border-radius: 999px;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

/* ===== Focus visible ===== */
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(99, 102, 241, 0.4);
  outline-offset: 2px;
  border-radius: 4px;
}

/* roulang page: article */
:root {
  --primary: #6366F1;
  --primary-dark: #4F46E5;
  --primary-light: #EEF2FF;
  --accent: #8B5CF6;
  --text: #1E293B;
  --text-muted: #64748B;
  --bg: #F8FAFC;
  --card-bg: #FFFFFF;
  --border: #E2E8F0;
  --border-light: #F1F5F9;
  --dark: #0F172A;
  --dark-2: #1E1B4B;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
  --container: 1200px;
  --transition: all 0.3s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input { font-family: inherit; outline: none; }
.container-c { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.93); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-light); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; font-weight: 800; font-size: 14px; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 12px rgba(99,102,241,0.4); }
.logo-text { font-size: 18px; font-weight: 600; color: var(--text); line-height: 1.2; }
.logo-text b { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-link { padding: 10px 18px; border-radius: 999px; font-size: 15px; font-weight: 500; color: #475569; transition: var(--transition); }
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(99,102,241,0.35); }
.nav-cta { display: flex; align-items: center; gap: 16px; }
.search-box { display: flex; align-items: center; background: var(--border-light); border-radius: 999px; padding: 8px 16px; gap: 8px; width: 190px; border: 1px solid transparent; transition: var(--transition); }
.search-box:focus-within { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }
.search-box i { color: #94A3B8; font-size: 14px; }
.search-box input { border: none; background: transparent; width: 100%; font-size: 14px; color: var(--text); }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; background: var(--primary); color: #fff; font-weight: 600; border-radius: 999px; padding: 12px 24px; transition: var(--transition); box-shadow: 0 4px 14px rgba(99,102,241,0.3); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(99,102,241,0.4); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(99,102,241,0.3); }
.btn-primary:focus-visible { outline: 3px solid rgba(99,102,241,0.4); outline-offset: 2px; }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-white { display: inline-flex; align-items: center; gap: 8px; background: #fff; color: var(--primary); font-weight: 600; padding: 14px 32px; border-radius: 999px; box-shadow: 0 4px 20px rgba(0,0,0,0.15); transition: var(--transition); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,0,0,0.2); }
.menu-toggle { display: none; font-size: 20px; color: var(--text); width: 40px; height: 40px; border-radius: 8px; align-items: center; justify-content: center; background: var(--border-light); }
.mobile-menu { display: none; padding: 16px 24px; border-top: 1px solid var(--border-light); background: #fff; flex-direction: column; gap: 4px; }
.mobile-menu a { display: block; padding: 12px 16px; border-radius: 10px; font-weight: 500; color: #475569; }
.mobile-menu a.active { background: var(--primary-light); color: var(--primary); }
.mobile-menu.open { display: flex; }

/* Page Banner */
.page-banner { padding: 72px 0 64px; background-size: cover; background-position: center; position: relative; color: #fff; }
.page-banner::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,42,0.88), rgba(99,102,241,0.72)); }
.page-banner .container-c { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255,255,255,0.8); margin-bottom: 20px; flex-wrap: wrap; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { font-size: 10px; opacity: 0.6; }
.breadcrumb .current { color: #fff; font-weight: 500; max-width: 340px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(255,255,255,0.16); color: #fff; padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 500; border: 1px solid rgba(255,255,255,0.28); backdrop-filter: blur(4px); }
.page-banner h1 { font-size: 32px; font-weight: 800; line-height: 1.35; margin: 16px 0 14px; max-width: 820px; letter-spacing: -0.01em; }
.page-meta { display: flex; gap: 24px; font-size: 14px; color: rgba(255,255,255,0.82); flex-wrap: wrap; }
.page-meta span { display: inline-flex; align-items: center; }
.page-meta i { margin-right: 7px; opacity: 0.75; }

/* Article Main */
.article-main { padding: 48px 0 16px; }
.article-card { background: var(--card-bg); border-radius: var(--radius); border: 1px solid var(--border-light); box-shadow: var(--shadow); overflow: hidden; }
.article-head { padding: 32px 40px 24px; border-bottom: 1px solid var(--border-light); background: linear-gradient(180deg, #FBFCFE, #fff); }
.article-head h2 { font-size: 24px; font-weight: 700; color: var(--text); margin-bottom: 14px; line-height: 1.4; }
.meta-line { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.meta-line .badge { background: var(--primary-light); color: var(--primary); border-color: rgba(99,102,241,0.18); }
.meta-line .text-muted-info { color: var(--text-muted); font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.meta-line .text-muted-info i { opacity: 0.7; }
.article-body { padding: 40px; font-size: 16px; line-height: 1.9; color: #334155; }
.article-body h2, .article-body h3, .article-body h4 { color: var(--text); font-weight: 700; margin-top: 32px; margin-bottom: 16px; line-height: 1.4; }
.article-body h2 { font-size: 22px; padding-bottom: 12px; border-bottom: 2px solid var(--border-light); }
.article-body h3 { font-size: 18px; }
.article-body h4 { font-size: 16px; }
.article-body p { margin-bottom: 18px; }
.article-body strong { color: var(--text); font-weight: 700; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 4px; word-break: break-all; }
.article-body a:hover { color: var(--primary-dark); }
.article-body ul, .article-body ol { margin: 16px 0 24px; padding-left: 24px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; }
.article-body img { border-radius: var(--radius-sm); margin: 24px 0; box-shadow: var(--shadow-sm); }
.article-body blockquote { border-left: 4px solid var(--primary); background: var(--primary-light); padding: 16px 24px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 24px 0; color: var(--text); }
.article-body blockquote p { margin-bottom: 0; }
.article-body pre { background: var(--dark); color: #E2E8F0; border-radius: var(--radius-sm); padding: 20px 24px; overflow-x: auto; margin: 24px 0; font-size: 14px; line-height: 1.7; }
.article-body code { font-family: "Fira Code", "Consolas", monospace; font-size: 0.9em; background: var(--border-light); padding: 2px 6px; border-radius: 4px; }
.article-body pre code { background: transparent; padding: 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 12px 16px; text-align: left; }
.article-body th { background: var(--border-light); font-weight: 600; color: var(--text); }
.article-body hr { border: none; border-top: 1px solid var(--border-light); margin: 32px 0; }
.not-found-box { padding: 80px 40px; text-align: center; }
.not-found-box .icon-circle { width: 80px; height: 80px; border-radius: 50%; background: var(--primary-light); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.not-found-box .icon-circle i { font-size: 32px; color: var(--primary); }
.not-found-box h2 { font-size: 24px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.not-found-box p { color: var(--text-muted); margin-bottom: 24px; }

/* Section */
.section-block { padding: 72px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-tag { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 600; padding: 6px 18px; border-radius: 999px; letter-spacing: 1px; margin-bottom: 14px; }
.section-head h2 { font-size: 30px; font-weight: 800; margin-bottom: 12px; line-height: 1.3; letter-spacing: -0.01em; }
.section-head p { color: var(--text-muted); font-size: 15px; }

/* Point Cards */
.point-card { background: var(--card-bg); border-radius: var(--radius); border: 1px solid var(--border-light); box-shadow: var(--shadow-sm); padding: 32px 28px; transition: var(--transition); position: relative; overflow: hidden; }
.point-card::after { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: var(--transition); }
.point-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(99,102,241,0.2); }
.point-card:hover::after { opacity: 1; }
.point-icon { width: 52px; height: 52px; border-radius: 14px; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 20px; }
.point-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.point-card p { color: var(--text-muted); font-size: 14px; line-height: 1.75; }

/* Related Cards */
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.related-card { background: var(--card-bg); border-radius: var(--radius); border: 1px solid var(--border-light); box-shadow: var(--shadow-sm); overflow: hidden; transition: var(--transition); display: block; }
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(99,102,241,0.22); }
.related-card-img { position: relative; height: 160px; overflow: hidden; }
.related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .related-card-img img { transform: scale(1.06); }
.related-card-img .badge { position: absolute; top: 12px; left: 12px; z-index: 2; background: rgba(15,23,42,0.72); }
.related-card-body { padding: 20px; }
.related-card-body h3 { font-size: 15px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 44px; }
.related-card-body p { color: var(--text-muted); font-size: 13px; line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; min-height: 42px; }
.related-card-body .date { font-size: 12px; color: #94A3B8; display: flex; align-items: center; gap: 6px; }

/* FAQ */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.faq-item { background: var(--card-bg); border: 1px solid var(--border-light); border-radius: var(--radius); padding: 24px 28px; transition: var(--transition); }
.faq-item:hover { border-color: rgba(99,102,241,0.22); box-shadow: var(--shadow); }
.faq-item h3 { font-size: 16px; font-weight: 700; margin-bottom: 10px; display: flex; align-items: flex-start; gap: 10px; }
.faq-item h3 i { color: var(--primary); font-size: 14px; margin-top: 4px; flex-shrink: 0; }
.faq-item p { font-size: 14px; color: var(--text-muted); line-height: 1.75; padding-left: 24px; }

/* CTA */
.cta-section { padding: 32px 0 80px; }
.cta-box { background: linear-gradient(135deg, var(--dark-2), var(--primary)); border-radius: 24px; padding: 52px 64px; display: flex; align-items: center; justify-content: space-between; gap: 40px; position: relative; overflow: hidden; color: #fff; }
.cta-box::before { content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: rgba(255,255,255,0.08); top: -100px; right: -80px; }
.cta-box::after { content: ''; position: absolute; width: 150px; height: 150px; border-radius: 50%; background: rgba(255,255,255,0.06); bottom: -50px; right: 180px; }
.cta-content, .cta-box .btn-white { position: relative; z-index: 2; }
.cta-content h2 { font-size: 26px; font-weight: 800; margin-bottom: 8px; line-height: 1.3; }
.cta-content p { color: rgba(255,255,255,0.85); font-size: 15px; }

/* Footer */
.site-footer { background: #0F172A; color: #94A3B8; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand p { font-size: 14px; line-height: 1.75; margin-top: 12px; }
.footer-title { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: #94A3B8; transition: var(--transition); }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-info p { font-size: 14px; margin-bottom: 10px; }
.footer-info i { width: 20px; color: #818CF8; margin-right: 6px; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 24px 0 28px; font-size: 13px; flex-wrap: wrap; gap: 12px; }

/* Responsive */
@media (max-width: 1024px) {
  .search-box { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cta-box { padding: 40px; flex-direction: column; text-align: center; }
  .nav-links { display: none; }
  .menu-toggle { display: flex; }
  .nav-cta .btn-primary { display: none; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .page-banner { padding: 56px 0 48px; }
  .page-banner h1 { font-size: 24px; }
  .article-head { padding: 24px 20px; }
  .article-head h2 { font-size: 20px; }
  .article-body { padding: 24px 20px; font-size: 15px; }
  .section-block { padding: 56px 0; }
  .section-head { margin-bottom: 36px; }
  .section-head h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .cta-box { padding: 36px 28px; }
  .cta-content h2 { font-size: 22px; }
  .page-meta { gap: 14px; font-size: 13px; }
}
@media (max-width: 520px) {
  .container-c { padding: 0 16px; }
  .nav-wrap { height: 64px; }
  .logo-text { font-size: 16px; }
  .logo-icon { width: 36px; height: 36px; font-size: 13px; }
  .page-banner h1 { font-size: 21px; }
  .breadcrumb { font-size: 13px; }
  .breadcrumb .current { max-width: 150px; }
  .related-grid { grid-template-columns: 1fr; }
  .article-body { padding: 20px 16px; }
  .article-head { padding: 20px 16px; }
  .point-card { padding: 24px 20px; }
  .faq-item { padding: 20px; }
  .cta-box { padding: 28px 20px; }
}