/* roulang page: index */
:root {
  --bg-dark: #0a0e17;
  --bg-panel: rgba(17, 24, 39, 0.7);
  --bg-card: #131c2c;
  --bg-card-hover: #1a2438;
  --primary: #22d3ee;
  --secondary: #a78bfa;
  --accent: #f472b6;
  --text-main: #f1f5f9;
  --text-muted: #8496b0;
  --border-subtle: rgba(148, 163, 184, 0.1);
  --glow-cyan: 0 0 40px rgba(34, 211, 238, 0.15);
  --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.4);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color 0.2s; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #0d1322; }
::-webkit-scrollbar-thumb { background: #2c3a52; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #3b4d6b; }
.main-wrapper { min-height: 100vh; }

.desktop-sidebar {
  display: none;
  position: fixed;
  inset: 0 auto 0 0;
  width: 250px;
  z-index: 50;
  background: rgba(10, 14, 23, 0.92);
  border-right: 1px solid var(--border-subtle);
  backdrop-filter: blur(24px);
  flex-direction: column;
  padding: 28px 20px 20px;
}
@media (min-width: 1024px) {
  .desktop-sidebar { display: flex; }
  .main-wrapper { margin-left: 250px; }
}
.sidebar-logo {
  display: block;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 2px;
  padding: 6px 10px 18px;
  background: linear-gradient(135deg, #22d3ee 0%, #a78bfa 60%, #f472b6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  border-bottom: 1px solid var(--border-subtle);
}
.sidebar-nav { margin-top: 28px; display: flex; flex-direction: column; gap: 8px; }
.nav-link {
  display: flex; align-items: center; gap: 14px;
  padding: 13px 16px; border-radius: var(--radius-md);
  color: var(--text-muted); font-size: 15px; font-weight: 500;
  border: 1px solid transparent; transition: all 0.25s ease;
}
.nav-link i { width: 20px; text-align: center; font-size: 16px; }
.nav-link:hover { background: rgba(34, 211, 238, 0.07); color: var(--text-main); transform: translateX(4px); }
.nav-link.active {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.14), rgba(167, 139, 250, 0.12));
  color: var(--primary); border-color: rgba(34, 211, 238, 0.25);
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.08);
}
.sidebar-bottom { margin-top: auto; padding-top: 20px; border-top: 1px solid var(--border-subtle); }
.social-links { display: flex; gap: 12px; margin-bottom: 14px; }
.social-links a {
  width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); background: rgba(148, 163, 184, 0.08);
  color: var(--text-muted); font-size: 15px; transition: all 0.25s;
}
.social-links a:hover { background: rgba(34, 211, 238, 0.15); color: var(--primary); transform: translateY(-2px); }
.sidebar-bottom p { font-size: 12px; color: #475569; line-height: 1.5; }

.mobile-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(20px); border-bottom: 1px solid var(--border-subtle);
}
@media (min-width: 1024px) { .mobile-header { display: none; } }
.mobile-logo {
  font-size: 22px; font-weight: 800; letter-spacing: 1px;
  background: linear-gradient(135deg, #22d3ee, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.mobile-menu-btn {
  width: 42px; height: 42px; display: flex; align-items: center; justify-content: center;
  background: rgba(148, 163, 184, 0.1); border: 1px solid var(--border-subtle);
  border-radius: 12px; color: var(--text-main); font-size: 18px; cursor: pointer; transition: all 0.2s;
}
.mobile-menu-btn:hover { background: rgba(34, 211, 238, 0.15); border-color: rgba(34, 211, 238, 0.3); }
.mobile-menu-panel {
  display: none; position: fixed; top: 71px; left: 0; right: 0; z-index: 45;
  background: rgba(10, 14, 23, 0.97); border-bottom: 1px solid var(--border-subtle);
  padding: 16px 20px 20px; box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}
.mobile-menu-panel.open { display: block; }
.mobile-nav-link {
  display: flex; align-items: center; gap: 14px; padding: 14px 16px;
  border-radius: var(--radius-md); color: var(--text-muted); font-size: 15px; font-weight: 500;
  border: 1px solid transparent;
}
.mobile-nav-link:hover { background: rgba(148, 163, 184, 0.08); color: var(--text-main); }
.mobile-nav-link.active { background: rgba(34, 211, 238, 0.12); color: var(--primary); border-color: rgba(34, 211, 238, 0.2); }

.hero { position: relative; min-height: 92vh; display: flex; align-items: center; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; z-index: 0; }
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(135deg, rgba(10, 14, 23, 0.92) 0%, rgba(10, 14, 23, 0.7) 40%, rgba(10, 14, 23, 0.4) 100%),
    radial-gradient(ellipse at 30% 60%, rgba(34, 211, 238, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 75% 30%, rgba(167, 139, 250, 0.1) 0%, transparent 55%);
}
.hero-content { position: relative; z-index: 2; width: 100%; max-width: 1200px; margin: 0 auto; padding: 80px 24px 60px; }
@media (min-width: 768px) { .hero-content { padding: 100px 48px 80px; } }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px; border-radius: 999px;
  background: rgba(34, 211, 238, 0.12); border: 1px solid rgba(34, 211, 238, 0.3);
  color: var(--primary); font-size: 14px; font-weight: 600; letter-spacing: 1px; margin-bottom: 24px;
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.1);
}
.hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800; line-height: 1.15; letter-spacing: 2px; margin-bottom: 20px; }
.gradient-text {
  display: block;
  background: linear-gradient(100deg, #22d3ee 0%, #a78bfa 50%, #f472b6 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-desc { max-width: 560px; font-size: 17px; color: var(--text-muted); line-height: 1.8; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 48px; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 10px; padding: 14px 28px; border-radius: 14px;
  background: linear-gradient(135deg, #22d3ee, #0ea5e9); color: #06222a; font-weight: 700; font-size: 15px;
  border: none; cursor: pointer; box-shadow: 0 4px 24px rgba(34, 211, 238, 0.35); transition: all 0.3s ease;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(34, 211, 238, 0.45); }
.btn-outline {
  display: inline-flex; align-items: center; gap: 10px; padding: 14px 28px; border-radius: 14px;
  background: transparent; color: var(--text-main); font-weight: 600; font-size: 15px;
  border: 1px solid rgba(148, 163, 184, 0.3); cursor: pointer; transition: all 0.3s ease;
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: rgba(34, 211, 238, 0.06); transform: translateY(-2px); }
.hero-stats { display: grid; grid-template-columns: repeat(3, auto); gap: 32px; max-width: 520px; }
.stat-item { padding-right: 24px; border-right: 1px solid var(--border-subtle); }
.stat-item:last-child { border-right: none; }
.stat-item strong {
  display: block; font-size: 28px; font-weight: 800;
  background: linear-gradient(135deg, #22d3ee, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.stat-item span { font-size: 13px; color: var(--text-muted); margin-top: 2px; }
@media (max-width: 640px) {
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .stat-item { padding-right: 14px; }
  .stat-item strong { font-size: 22px; }
}

.section { padding: 80px 24px; }
@media (min-width: 768px) { .section { padding: 100px 48px; } }
.section-tag {
  display: inline-block; padding: 5px 14px; border-radius: 999px;
  background: rgba(167, 139, 250, 0.12); border: 1px solid rgba(167, 139, 250, 0.25);
  color: var(--secondary); font-size: 13px; font-weight: 600; letter-spacing: 1px; margin-bottom: 14px;
}
.section-title { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 800; letter-spacing: 1px; line-height: 1.2; margin-bottom: 12px; }
.section-subtitle { max-width: 600px; margin: 0 auto; color: var(--text-muted); font-size: 16px; }
.container-custom { max-width: 1200px; margin: 0 auto; }

.feature-card {
  position: relative; background: var(--bg-panel); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg); padding: 32px 26px; transition: all 0.35s ease; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent); opacity: 0; transition: opacity 0.3s;
}
.feature-card:hover {
  transform: translateY(-6px); border-color: rgba(34, 211, 238, 0.3);
  box-shadow: var(--shadow-card); background: rgba(17, 24, 39, 0.88);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 52px; height: 52px; display: flex; align-items: center; justify-content: center;
  border-radius: 16px; font-size: 20px; margin-bottom: 20px; color: var(--primary);
  background: rgba(34, 211, 238, 0.12); border: 1px solid rgba(34, 211, 238, 0.2); transition: all 0.3s;
}
.feature-card:hover .feature-icon { transform: scale(1.08); box-shadow: 0 0 20px rgba(34, 211, 238, 0.25); }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

.category-card {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background: var(--bg-card); border: 1px solid var(--border-subtle); transition: all 0.35s ease;
  display: block;
}
.category-card:hover {
  transform: translateY(-6px); border-color: rgba(34, 211, 238, 0.35);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 30px rgba(34, 211, 238, 0.08);
}
.category-card-img { position: relative; height: 200px; overflow: hidden; }
.category-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.category-card:hover .category-card-img img { transform: scale(1.06); }
.category-card-img::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 14, 23, 0.9) 100%);
}
.category-card-body { padding: 22px 22px 24px; position: relative; }
.category-card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.category-card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; }
.category-card-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--primary); }
.category-card-link i { transition: transform 0.3s; }
.category-card:hover .category-card-link i { transform: translateX(4px); }

.news-card {
  display: block; background: var(--bg-panel); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg); padding: 28px; transition: all 0.3s ease;
}
.news-card:hover {
  transform: translateY(-4px); border-color: rgba(34, 211, 238, 0.3);
  box-shadow: var(--shadow-card); background: rgba(17, 24, 39, 0.86);
}
.news-badge {
  display: inline-flex; padding: 3px 12px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: rgba(167, 139, 250, 0.14); border: 1px solid rgba(167, 139, 250, 0.25); color: var(--secondary);
}
.news-title { font-size: 18px; font-weight: 700; line-height: 1.4; margin-bottom: 10px; color: var(--text-main); transition: color 0.25s; }
.news-card:hover .news-title { color: var(--primary); }
.news-desc {
  font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-more { font-size: 13px; font-weight: 600; color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px; transition: color 0.25s; }
.news-card:hover .news-more { color: var(--primary); }

.steps-section { background: linear-gradient(180deg, transparent, rgba(17, 24, 39, 0.4), transparent); }
.step-card { position: relative; text-align: center; padding: 36px 24px; }
.step-number {
  position: relative; width: 72px; height: 72px; margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center; border-radius: 50%;
  font-size: 24px; font-weight: 800; color: var(--primary);
  background: rgba(34, 211, 238, 0.1); border: 2px solid rgba(34, 211, 238, 0.3);
  box-shadow: 0 0 30px rgba(34, 211, 238, 0.1);
}
.step-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-muted); max-width: 220px; margin: 0 auto; line-height: 1.7; }

.faq-item {
  background: var(--bg-panel); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md); margin-bottom: 12px; overflow: hidden; transition: border-color 0.3s;
}
.faq-item[open] { border-color: rgba(34, 211, 238, 0.3); box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; font-size: 16px; font-weight: 600; cursor: pointer; list-style: none; user-select: none;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question i { color: var(--text-muted); font-size: 14px; transition: transform 0.3s; flex-shrink: 0; }
.faq-item[open] .faq-question i { transform: rotate(180deg); color: var(--primary); }
.faq-answer { padding: 0 24px 20px; font-size: 14px; color: var(--text-muted); line-height: 1.8; }

.cta-section { position: relative; overflow: hidden; }
.cta-bg { position: absolute; inset: 0; background-size: cover; background-position: center; z-index: 0; }
.cta-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(10, 14, 23, 0.94), rgba(10, 14, 23, 0.82)); z-index: 1;
}
.cta-content { position: relative; z-index: 2; text-align: center; padding: 100px 24px; }
.cta-content h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 16px; }
.cta-content p { max-width: 520px; margin: 0 auto 36px; color: var(--text-muted); font-size: 17px; }

.site-footer { background: rgba(8, 11, 18, 0.95); border-top: 1px solid var(--border-subtle); padding: 48px 24px 32px; }
.footer-inner {
  max-width: 1200px; margin: 0 auto; display: flex; flex-direction: column; gap: 32px;
}
@media (min-width: 768px) {
  .footer-inner { flex-direction: row; align-items: flex-start; justify-content: space-between; }
}
.footer-brand .logo {
  font-size: 24px; font-weight: 800;
  background: linear-gradient(135deg, #22d3ee, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 8px; display: inline-block;
}
.footer-brand p { font-size: 13px; color: var(--text-muted); max-width: 280px; line-height: 1.7; }
.footer-nav { display: flex; flex-direction: column; gap: 12px; }
.footer-nav a { font-size: 14px; color: var(--text-muted); transition: color 0.25s; }
.footer-nav a:hover { color: var(--primary); }
.footer-bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border-subtle); text-align: center; font-size: 13px; color: #475569; }

.divider-glow {
  width: 100%; height: 1px; border: none;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.4), rgba(167, 139, 250, 0.4), transparent);
}
a:focus-visible, button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

.data-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
@media (min-width: 768px) { .data-grid { grid-template-columns: repeat(4, 1fr); } }
.data-panel {
  text-align: center; padding: 28px 16px; background: var(--bg-panel);
  border: 1px solid var(--border-subtle); border-radius: var(--radius-lg); transition: all 0.3s;
}
.data-panel:hover { border-color: rgba(34, 211, 238, 0.3); transform: translateY(-4px); }
.data-panel strong {
  display: block; font-size: 32px; font-weight: 800;
  background: linear-gradient(135deg, #22d3ee, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 6px;
}
.data-panel span { font-size: 13px; color: var(--text-muted); }

/* roulang page: category1 */
:root {
  --primary: #06b6d4;
  --primary-hover: #22d3ee;
  --primary-glow: rgba(6, 182, 212, 0.25);
  --secondary: #8b5cf6;
  --secondary-glow: rgba(139, 92, 246, 0.2);
  --accent: #f59e0b;
  --bg-deep: #0b0f17;
  --bg-surface: #111827;
  --bg-card: #141c2b;
  --bg-card-hover: #1a2435;
  --border: rgba(148, 163, 184, 0.13);
  --border-strong: rgba(148, 163, 184, 0.25);
  --text-light: #e2e8f0;
  --text-mid: #94a3b8;
  --text-dim: #64748b;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
  --glow: 0 0 24px rgba(6, 182, 212, 0.12);
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  background: var(--bg-deep);
  color: var(--text-light);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 左侧导航 */
.sidebar {
  position: fixed;
  left: 0; top: 0;
  width: 260px;
  height: 100vh;
  background: rgba(10, 14, 23, 0.97);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(14px);
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 30px 22px;
  transition: transform var(--transition);
}
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 6px 22px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.logo-icon {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 16px var(--primary-glow);
}
.logo-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, #e2e8f0, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.sidebar-nav { flex: 1; padding-top: 18px; display: flex; flex-direction: column; gap: 6px; }
.nav-group-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  padding: 0 12px 8px;
  font-weight: 600;
}
.nav-link {
  display: flex; align-items: center; gap: 12px;
  padding: 13px 14px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-mid);
  transition: all var(--transition);
  position: relative;
  border: 1px solid transparent;
}
.nav-link i { width: 20px; text-align: center; font-size: 15px; }
.nav-link:hover {
  color: var(--text-light);
  background: rgba(6, 182, 212, 0.08);
  border-color: rgba(6, 182, 212, 0.15);
  transform: translateX(3px);
}
.nav-link.active {
  color: var(--primary);
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(139, 92, 246, 0.08));
  border-color: rgba(6, 182, 212, 0.25);
  font-weight: 600;
  box-shadow: 0 0 18px rgba(6, 182, 212, 0.08);
}
.nav-link.active i { color: var(--primary); }
.nav-link:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.sidebar-footer { padding-top: 16px; border-top: 1px solid var(--border); }
.online-card {
  background: rgba(6, 182, 212, 0.06);
  border: 1px solid rgba(6, 182, 212, 0.16);
  border-radius: 14px;
  padding: 14px 16px;
}
.online-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #10b981;
  display: inline-block;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

/* 移动端顶部导航 */
.mobile-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(10, 14, 23, 0.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.mobile-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
}
.mobile-logo { display: flex; align-items: center; gap: 10px; }
.mobile-logo .logo-icon { width: 34px; height: 34px; font-size: 15px; border-radius: 10px; }
.mobile-logo .logo-text { font-size: 19px; }
.mobile-menu-btn {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-mid);
  font-size: 18px;
  transition: all var(--transition);
}
.mobile-menu-btn:hover { color: var(--primary); border-color: var(--primary); }
.mobile-menu { border-top: 1px solid var(--border); }
.mobile-nav { padding: 10px 16px 16px; display: flex; flex-direction: column; gap: 6px; }
.mobile-nav .nav-link { font-size: 15px; padding: 12px 14px; }

/* 主内容 */
.main-wrap { min-height: 100vh; display: flex; flex-direction: column; }
.main-content { flex: 1; }

/* Hero Banner */
.hero-banner {
  position: relative;
  padding: 90px 0 80px;
  background-image:
    linear-gradient(rgba(11, 15, 23, 0.86), rgba(11, 15, 23, 0.94)),
    url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.hero-banner::before {
  content: '';
  position: absolute;
  top: -100px; right: -80px;
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-banner::after {
  content: '';
  position: absolute;
  bottom: -120px; left: -60px;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.12), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 100px;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 14px;
  color: #f8fafc;
}
.hero-subtitle {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--text-mid);
  max-width: 520px;
  margin-bottom: 30px;
  line-height: 1.7;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 28px;
  background: linear-gradient(135deg, var(--primary), #0891b2);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 12px;
  border: none;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.3);
  transition: all var(--transition);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(6, 182, 212, 0.4);
  color: #fff;
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 28px;
  background: transparent;
  color: var(--text-light);
  font-size: 15px;
  font-weight: 500;
  border-radius: 12px;
  border: 1px solid var(--border-strong);
  transition: all var(--transition);
}
.btn-ghost:hover {
  background: rgba(148, 163, 184, 0.08);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn-primary:focus-visible, .btn-ghost:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  background: rgba(20, 28, 43, 0.65);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 24px;
  backdrop-filter: blur(8px);
  max-width: 560px;
}
.hero-stat {
  flex: 1;
  min-width: 100px;
  padding: 6px 12px;
  border-right: 1px solid var(--border);
}
.hero-stat:last-child { border-right: none; }
.hero-stat-value {
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.hero-stat-label { font-size: 13px; color: var(--text-dim); margin-top: 2px; }

/* 板块通用 */
.section { padding: 90px 0; position: relative; }
.section-alt { background: rgba(17, 24, 39, 0.5); border-block: 1px solid var(--border); }
.section-head { margin-bottom: 50px; max-width: 640px; }
.section-tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 100px;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.2);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  letter-spacing: -0.8px;
  color: #f8fafc;
  line-height: 1.3;
  margin-bottom: 10px;
}
.section-head p { color: var(--text-mid); font-size: 15px; line-height: 1.7; }

/* 分类简介 */
.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}
.intro-text p { color: var(--text-mid); font-size: 15px; line-height: 1.8; margin-bottom: 18px; }
.intro-text p:first-of-type { color: var(--text-light); font-size: 16px; }
.intro-points { display: flex; flex-direction: column; gap: 14px; }
.intro-point {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all var(--transition);
}
.intro-point:hover { border-color: rgba(6, 182, 212, 0.35); transform: translateX(4px); }
.intro-point i {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: rgba(6, 182, 212, 0.12);
  color: var(--primary);
  font-size: 14px;
  flex-shrink: 0;
}
.intro-point span { font-size: 14px; color: var(--text-light); font-weight: 500; }

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}
.card-img-wrap { position: relative; overflow: hidden; aspect-ratio: 16/10; }
.card-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.card:hover .card-img-wrap img { transform: scale(1.05); }
.card-img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 15, 23, 0.6) 0%, transparent 45%);
  pointer-events: none;
}
.card-badge {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 2;
  padding: 5px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(6px);
}
.badge-primary { background: rgba(6, 182, 212, 0.85); color: #fff; }
.badge-violet { background: rgba(139, 92, 246, 0.85); color: #fff; }
.badge-amber { background: rgba(245, 158, 11, 0.85); color: #fff; }
.card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { font-size: 17px; font-weight: 700; color: var(--text-light); margin-bottom: 8px; line-height: 1.4; transition: color var(--transition); }
.card:hover .card-body h3 { color: var(--primary); }
.card-body p { font-size: 14px; color: var(--text-mid); line-height: 1.7; margin-bottom: 16px; flex: 1; }
.card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-dim);
}
.card-meta i { margin-right: 4px; font-size: 12px; }

/* 热门榜 */
.rank-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.rank-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: all var(--transition);
}
.rank-item:hover {
  background: var(--bg-card-hover);
  border-color: rgba(6, 182, 212, 0.3);
  transform: translateX(6px);
}
.rank-num {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  font-size: 18px;
  font-weight: 800;
  background: rgba(148, 163, 184, 0.08);
  color: var(--text-mid);
  flex-shrink: 0;
}
.rank-item:nth-child(1) .rank-num { background: rgba(245, 158, 11, 0.15); color: var(--accent); }
.rank-item:nth-child(2) .rank-num { background: rgba(148, 163, 184, 0.15); color: #cbd5e1; }
.rank-item:nth-child(3) .rank-num { background: rgba(139, 92, 246, 0.15); color: var(--secondary); }
.rank-info { flex: 1; }
.rank-info h3 { font-size: 15px; font-weight: 600; color: var(--text-light); margin-bottom: 3px; transition: color var(--transition); }
.rank-item:hover .rank-info h3 { color: var(--primary); }
.rank-info p { font-size: 13px; color: var(--text-dim); }
.rank-meta { text-align: right; font-size: 13px; color: var(--text-dim); flex-shrink: 0; }
.rank-meta .rank-heat { color: var(--accent); font-weight: 600; font-size: 14px; }

/* 三步流程 */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative;
}
.step-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  transition: all var(--transition);
}
.step-card:hover {
  transform: translateY(-8px);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(6, 182, 212, 0.06);
}
.step-num {
  width: 64px; height: 64px;
  margin: 0 auto 22px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 18px;
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(139, 92, 246, 0.15));
  color: var(--primary);
  border: 1px solid rgba(6, 182, 212, 0.2);
}
.step-card h3 { font-size: 18px; font-weight: 700; color: var(--text-light); margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-mid); line-height: 1.7; }
.step-icon { position: absolute; bottom: 18px; right: 18px; font-size: 42px; opacity: 0.06; color: var(--secondary); }

/* FAQ */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: rgba(6, 182, 212, 0.35); }
.faq-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-light);
  transition: color var(--transition);
}
.faq-btn:hover { color: var(--primary); }
.faq-btn i { color: var(--text-dim); font-size: 14px; transition: transform var(--transition); flex-shrink: 0; }
.faq-item.open .faq-btn i { transform: rotate(180deg); color: var(--primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  margin-top: 4px;
  padding-top: 16px;
}

/* CTA */
.cta-section {
  padding: 90px 0;
  background-image:
    linear-gradient(rgba(11, 15, 23, 0.82), rgba(11, 15, 23, 0.92)),
    url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  border-top: 1px solid var(--border);
}
.cta-inner { text-align: center; max-width: 600px; margin: 0 auto; }
.cta-inner h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 14px;
  color: #f8fafc;
}
.cta-inner p { font-size: 16px; color: var(--text-mid); margin-bottom: 32px; line-height: 1.7; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* 页脚 */
.site-footer {
  background: rgba(8, 11, 18, 0.98);
  border-top: 1px solid var(--border);
  padding: 70px 0 30px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 50px;
}
.footer-brand .logo { font-size: 24px; font-weight: 800; color: var(--text-light); letter-spacing: -0.5px; display: inline-block; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: var(--text-dim); line-height: 1.8; max-width: 300px; }
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a {
  font-size: 14px;
  color: var(--text-mid);
  transition: color var(--transition), padding-left var(--transition);
}
.footer-nav a:hover { color: var(--primary); padding-left: 4px; }
.social-links { display: flex; gap: 12px; }
.social-links a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--border);
  color: var(--text-mid);
  font-size: 16px;
  transition: all var(--transition);
}
.social-links a:hover {
  color: #fff;
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--primary);
  transform: translateY(-3px);
}
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 24px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-bottom p { font-size: 13px; color: var(--text-dim); }

/* 响应式 */
@media (max-width: 1024px) {
  .sidebar { transform: translateX(-100%); }
  .main-wrap { margin-left: 0 !important; }
  .container { padding: 0 20px; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .hero-banner { padding: 64px 0 56px; }
  .hero-stats { padding: 14px 16px; flex-wrap: wrap; }
  .hero-stat { padding: 6px 8px; min-width: 80px; }
  .cards-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .steps-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; gap: 20px; }
  .rank-item { flex-wrap: wrap; gap: 14px; }
  .rank-meta { width: 100%; text-align: left; padding-left: 64px; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .cta-section { padding: 64px 0; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-primary, .hero-actions .btn-ghost { justify-content: center; width: 100%; }
  .hero-stat-value { font-size: 22px; }
  .faq-btn { padding: 16px 16px; font-size: 14px; }
  .faq-answer-inner { padding: 0 16px 18px; }
  .rank-item { padding: 16px; }
  .mobile-header-inner { padding: 10px 16px; }
}

/* roulang page: article */
:root {
  --primary: #00e5ff;
  --primary-soft: #22d3ee;
  --accent: #a78bfa;
  --pink: #f472b6;
  --bg-dark: #020617;
  --bg-panel: #0b1120;
  --bg-card: rgba(255,255,255,0.03);
  --bg-card-hover: rgba(255,255,255,0.06);
  --border: rgba(148,163,184,0.14);
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --radius: 16px;
  --shadow: 0 10px 32px rgba(0,0,0,0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

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

button,
input,
select,
textarea {
  font-family: inherit;
}

.page-container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Sidebar ===== */
.sidebar {
  width: 260px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 50;
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  background: rgba(2, 6, 23, 0.92);
  backdrop-filter: blur(14px);
  border-right: 1px solid rgba(148, 163, 184, 0.1);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 22px;
  letter-spacing: 1px;
  color: #fff;
  margin-bottom: 32px;
  padding: 0 8px;
}

.logo-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #020617;
  font-size: 16px;
  box-shadow: 0 0 22px rgba(0, 229, 255, 0.4);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: 12px;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 15px;
  transition: all 0.25s ease;
}

.nav-link i {
  width: 20px;
  text-align: center;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.nav-link.active {
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.18), rgba(167, 139, 250, 0.12));
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.3), 0 0 20px rgba(0, 229, 255, 0.08);
}

.sidebar-status {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid rgba(0, 229, 255, 0.18);
  color: #67e8f9;
  font-size: 13px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 10px #22c55e;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ===== Mobile Header ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  z-index: 50;
  background: rgba(2, 6, 23, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
  align-items: center;
  padding: 0 16px;
}

.mobile-logo {
  font-weight: 900;
  font-size: 18px;
  color: #fff;
  white-space: nowrap;
  letter-spacing: 1px;
}

.mobile-nav {
  display: flex;
  gap: 4px;
  margin-left: 14px;
  overflow-x: auto;
  scrollbar-width: none;
}

.mobile-nav::-webkit-scrollbar {
  display: none;
}

.mobile-nav .nav-link {
  white-space: nowrap;
  padding: 8px 12px;
  font-size: 14px;
  margin-bottom: 0;
  border-radius: 10px;
}

/* ===== Main Content ===== */
.main-content {
  margin-left: 260px;
  min-height: calc(100vh - 260px);
}

/* ===== Article Banner ===== */
.article-banner {
  padding: 72px 0 56px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(2, 6, 23, 0.72), rgba(2, 6, 23, 0.96));
  z-index: 1;
}

.article-banner .page-container {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--primary);
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb .sep {
  color: #475569;
  font-size: 12px;
}

/* ===== Badge & Tag ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid rgba(0, 229, 255, 0.28);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
}

.badge-soft {
  background: rgba(167, 139, 250, 0.1);
  border-color: rgba(167, 139, 250, 0.24);
  color: #c4b5fd;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.18);
  color: var(--text-muted);
  font-size: 12px;
  transition: all 0.2s;
}

.tag:hover {
  border-color: rgba(0, 229, 255, 0.35);
  color: var(--primary);
}

/* ===== Article Meta ===== */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 13px;
  color: #64748b;
}

.article-meta i {
  color: var(--primary);
  margin-right: 6px;
}

/* ===== Article Cover ===== */
.article-cover {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.12);
  box-shadow: 0 14px 42px rgba(0, 0, 0, 0.45);
}

.article-cover img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

/* ===== Article Content ===== */
.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: #cbd5e1;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid rgba(0, 229, 255, 0.25);
}

.article-content h3 {
  font-size: 21px;
  font-weight: 700;
  color: #fff;
  margin: 32px 0 14px;
}

.article-content p {
  margin: 18px 0;
}

.article-content strong {
  color: #fff;
}

.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}

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

.article-content ul,
.article-content ol {
  margin: 18px 0;
  padding-left: 22px;
}

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

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

.article-content li {
  margin: 8px 0;
}

.article-content img {
  border-radius: 14px;
  margin: 24px 0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.article-content blockquote {
  border-left: 3px solid var(--primary);
  background: rgba(0, 229, 255, 0.06);
  padding: 14px 20px;
  border-radius: 0 12px 12px 0;
  margin: 24px 0;
  color: #94a3b8;
  font-style: italic;
}

.article-content code {
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
  font-family: Consolas, Monaco, monospace;
  color: #7dd3fc;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

.article-content th,
.article-content td {
  border: 1px solid rgba(148, 163, 184, 0.2);
  padding: 10px 14px;
  text-align: left;
}

.article-content th {
  background: rgba(0, 229, 255, 0.06);
  color: #fff;
}

/* ===== Article Footer ===== */
.article-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
}

.share-btn {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.16);
  color: var(--text-muted);
  transition: all 0.2s;
}

.share-btn:hover {
  background: rgba(0, 229, 255, 0.1);
  color: var(--primary);
  transform: translateY(-2px);
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: linear-gradient(135deg, #00e5ff, #8b5cf6);
  color: #020617;
  font-weight: 700;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(0, 229, 255, 0.25);
  transition: all 0.25s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 229, 255, 0.35);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  color: #e2e8f0;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.03);
  transition: all 0.25s ease;
}

.btn-outline:hover {
  border-color: rgba(0, 229, 255, 0.5);
  color: var(--primary);
  background: rgba(0, 229, 255, 0.06);
  transform: translateY(-2px);
}

/* ===== Not Found ===== */
.not-found {
  text-align: center;
  padding: 80px 20px;
  border-radius: 18px;
  border: 1px dashed rgba(148, 163, 184, 0.22);
  background: rgba(255, 255, 255, 0.02);
}

.nf-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto;
  border-radius: 22px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.14);
  color: #38bdf8;
  font-size: 34px;
}

/* ===== FAQ Section ===== */
.faq-section {
  padding: 80px 0;
  background:
    radial-gradient(600px 300px at 80% 10%, rgba(0, 229, 255, 0.08), transparent),
    linear-gradient(180deg, #020617, #0b1120);
  border-top: 1px solid rgba(148, 163, 184, 0.08);
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 24px;
  transition: border-color 0.25s, background 0.25s, transform 0.25s;
}

.faq-item:hover {
  border-color: rgba(0, 229, 255, 0.28);
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
}

.faq-q {
  font-weight: 700;
  color: #fff;
  font-size: 16px;
}

.faq-a {
  color: var(--text-muted);
  font-size: 15px;
  margin-top: 10px;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 80px 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(2, 6, 23, 0.92), rgba(15, 23, 42, 0.88));
}

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

/* ===== Footer ===== */
.site-footer {
  background: #0b1120;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  margin-left: 260px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 32px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  color: #94a3b8;
  font-size: 14px;
  line-height: 1.8;
}

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

.footer-nav a {
  color: #94a3b8;
  font-size: 14px;
  transition: color 0.2s;
}

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

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(148, 163, 184, 0.12);
  color: #94a3b8;
  transition: all 0.25s;
}

.social-links a:hover {
  background: rgba(0, 229, 255, 0.12);
  color: var(--primary);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.08);
  padding: 18px 32px;
  text-align: center;
  font-size: 13px;
  color: #64748b;
}

/* ===== Focus ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 1023.5px) {
  .sidebar {
    display: none;
  }

  .mobile-header {
    display: flex;
  }

  .main-content {
    margin-left: 0;
    padding-top: 64px;
  }

  .site-footer {
    margin-left: 0;
  }

  .article-banner {
    padding: 46px 0 38px;
  }
}

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

  .article-cover img {
    height: 240px;
  }

  .article-content {
    font-size: 15px;
  }

  .article-content h2 {
    font-size: 22px;
  }

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

  .faq-section,
  .cta-section {
    padding: 56px 0;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    padding: 32px 20px;
    gap: 28px;
  }

  .cta-section h2 {
    font-size: 26px;
  }
}

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

  .mobile-logo {
    font-size: 16px;
  }

  .mobile-nav .nav-link {
    font-size: 13px;
    padding: 7px 10px;
  }

  .article-meta {
    gap: 12px;
    font-size: 12px;
  }

  .btn-primary,
  .btn-outline {
    padding: 10px 18px;
    font-size: 14px;
  }
}