/* roulang page: index */
:root {
  --primary: #00e5ff;
  --primary-rgb: 0, 229, 255;
  --secondary: #7b5cff;
  --accent: #ff4d6d;
  --success: #2dd4a8;
  --bg-main: #0a0f1c;
  --bg-sidebar: #0e1526;
  --bg-card: #131c31;
  --bg-elevated: #182338;
  --border: rgba(0, 229, 255, 0.14);
  --border-light: rgba(255, 255, 255, 0.06);
  --text-main: #e9f1ff;
  --text-weak: #8a9bbd;
  --text-dim: #5b6d8c;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 24px rgba(0, 229, 255, 0.18);
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 28px;
  --space-lg: 44px;
  --space-xl: 72px;
  --font: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --sidebar-width: 268px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: #6ff0ff; }
.grid-container { max-width: 1280px; padding-left: 24px; padding-right: 24px; }
h1, h2, h3, h4, h5 { line-height: 1.25; color: var(--text-main); margin-top: 0; }
h2 { font-size: 2rem; font-weight: 800; letter-spacing: -0.02em; }
p { margin-top: 0; }

.app-layout { display: flex; min-height: 100vh; }

.site-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: transform 0.3s ease;
  overflow-y: auto;
}
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 30px 24px 18px;
  font-size: 1.32rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-light);
}
.sidebar-logo .logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #050a12;
  font-size: 1rem;
  flex-shrink: 0;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.35);
}
.sidebar-logo:hover .logo-mark { box-shadow: 0 0 26px rgba(0, 229, 255, 0.6); }
.side-nav { flex: 1; padding: 18px 16px; }
.side-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  margin-bottom: 6px;
  border-radius: 10px;
  color: var(--text-weak);
  font-weight: 500;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.side-nav a i { width: 20px; text-align: center; font-size: 1.05rem; }
.side-nav a:hover { color: var(--text-main); background: rgba(0, 229, 255, 0.06); border-color: var(--border); }
.side-nav a.active {
  color: var(--primary);
  background: rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.2);
  box-shadow: inset 3px 0 0 var(--primary);
}
.sidebar-foot {
  padding: 20px 24px;
  border-top: 1px solid var(--border-light);
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.6;
}
.sidebar-foot .foot-brand { color: var(--text-weak); font-weight: 600; }

.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 900;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(10, 15, 28, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.mobile-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--text-main);
  font-size: 1.1rem;
}
.mobile-logo .logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #050a12;
  font-size: 0.85rem;
}
.menu-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-main);
  font-size: 1.1rem;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}
.menu-toggle:hover { background: rgba(0, 229, 255, 0.08); border-color: var(--primary); }
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 950;
  backdrop-filter: blur(2px);
}
.sidebar-overlay.show { display: block; }

.main-content { flex: 1; margin-left: var(--sidebar-width); min-width: 0; }

.hero {
  position: relative;
  padding: 110px 0 100px;
  background:
    linear-gradient(135deg, rgba(10, 15, 28, 0.92) 0%, rgba(10, 15, 28, 0.72) 55%, rgba(123, 92, 255, 0.22) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
}
.hero-content { max-width: 720px; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid rgba(0, 229, 255, 0.3);
  background: rgba(0, 229, 255, 0.08);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 22px;
}
.live-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 1.6s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 77, 109, 0.6); }
  70% { box-shadow: 0 0 0 8px rgba(255, 77, 109, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 77, 109, 0); }
}
.hero h1 {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.16;
  margin-bottom: 20px;
}
.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 1.12rem;
  color: var(--text-weak);
  max-width: 580px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 36px; }
.button {
  margin-bottom: 0;
  font-family: var(--font);
  font-size: 0.95rem;
  border-radius: 10px;
  padding: 13px 26px;
  font-weight: 600;
  transition: all 0.25s ease;
}
.button:focus { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-glow {
  background: linear-gradient(135deg, var(--primary), #00b4d8);
  color: #050a12;
  border: none;
  box-shadow: 0 0 22px rgba(0, 229, 255, 0.35);
}
.btn-glow:hover {
  color: #050a12;
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(0, 229, 255, 0.55);
}
.btn-ghost {
  background: transparent;
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: rgba(0, 229, 255, 0.06); }
.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.metric-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 100px;
  font-size: 0.88rem;
  color: var(--text-weak);
}
.metric-chip i { color: var(--primary); }

.section { padding: var(--space-xl) 0; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}
.section-head .section-tagline {
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}
.section-head p { color: var(--text-weak); margin-bottom: 0; max-width: 520px; }

.stats-section {
  background: var(--bg-main);
  border-bottom: 1px solid var(--border-light);
  padding: 38px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 26px 24px;
  text-align: center;
  transition: all 0.25s ease;
}
.stat-card:hover { border-color: var(--border); transform: translateY(-3px); box-shadow: var(--shadow); }
.stat-num {
  font-size: 2.1rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}
.stat-label { color: var(--text-weak); font-size: 0.9rem; margin-top: 6px; }

.features-section { position: relative; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all 0.3s ease;
}
.feature-card:hover { border-color: var(--border); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
  border: 1px solid rgba(0, 229, 255, 0.2);
}
.feature-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.feature-card p { color: var(--text-weak); font-size: 0.92rem; margin-bottom: 0; }

.categories-section { background: var(--bg-main); border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--primary); }
.category-card .cat-img { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.category-card .cat-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.category-card:hover .cat-img img { transform: scale(1.05); }
.category-card .cat-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(10, 15, 28, 0.8) 100%);
}
.cat-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.cat-body h3 { font-size: 1.18rem; font-weight: 700; margin-bottom: 8px; }
.cat-body p { color: var(--text-weak); font-size: 0.92rem; flex: 1; margin-bottom: 14px; }
.cat-link {
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
}
.cat-link i { transition: transform 0.2s; }
.cat-link:hover i { transform: translateX(4px); }

.post-section { position: relative; }
.post-list { display: flex; flex-direction: column; gap: 10px; }
.post-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 15px 18px;
  transition: all 0.25s ease;
}
.post-item:hover {
  border-color: var(--primary);
  background: var(--bg-elevated);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}
.post-badge {
  background: rgba(0, 229, 255, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 229, 255, 0.25);
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 100px;
  flex-shrink: 0;
  font-weight: 500;
}
.post-item .post-title {
  flex: 1;
  color: var(--text-main);
  font-weight: 500;
  font-size: 0.95rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.post-item:hover .post-title { color: var(--primary); }
.post-time {
  color: var(--text-dim);
  font-size: 0.82rem;
  flex-shrink: 0;
}
.empty-tip {
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 30px;
  text-align: center;
  color: var(--text-weak);
}

.match-section {
  background:
    linear-gradient(135deg, rgba(13, 27, 48, 0.95), rgba(19, 18, 53, 0.9)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.match-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.match-card {
  background: rgba(19, 28, 49, 0.86);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(4px);
  transition: all 0.3s ease;
}
.match-card:hover { transform: translateY(-4px); border-color: rgba(0, 229, 255, 0.45); box-shadow: var(--shadow); }
.match-card .mc-img { aspect-ratio: 16/10; overflow: hidden; }
.match-card .mc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.match-card:hover .mc-img img { transform: scale(1.05); }
.mc-body { padding: 18px 20px 22px; flex: 1; display: flex; flex-direction: column; }
.mc-body .mc-tag {
  font-size: 0.78rem;
  color: var(--secondary);
  background: rgba(123, 92, 255, 0.14);
  border: 1px solid rgba(123, 92, 255, 0.28);
  padding: 3px 10px;
  border-radius: 100px;
  display: inline-block;
  margin-bottom: 12px;
  width: fit-content;
  font-weight: 500;
}
.mc-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.mc-body p { color: var(--text-weak); font-size: 0.9rem; margin-bottom: auto; }

.steps-section .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  position: relative;
  transition: all 0.3s ease;
}
.step-card:hover { border-color: var(--border); transform: translateY(-4px); box-shadow: var(--shadow); }
.step-num {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #050a12;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  margin-bottom: 18px;
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
}
.step-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.step-card p { color: var(--text-weak); font-size: 0.9rem; margin-bottom: 0; }

.faq-section .faq-accordion {
  background: transparent;
  margin: 0;
  list-style: none;
  padding: 0;
}
.faq-accordion .accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  list-style: none;
  transition: border-color 0.2s;
}
.faq-accordion .accordion-item:hover { border-color: var(--border); }
.faq-accordion .accordion-title {
  background: transparent;
  color: var(--text-main);
  font-size: 1rem;
  font-weight: 600;
  padding: 18px 20px;
  border: none;
  position: relative;
  display: block;
  transition: color 0.2s;
}
.faq-accordion .accordion-title:hover { color: var(--primary); background: rgba(0, 229, 255, 0.03); }
.faq-accordion .accordion-title::before,
.faq-accordion .accordion-title::after {
  content: '';
  position: absolute;
  right: 20px;
  top: 50%;
  width: 14px;
  height: 2px;
  background: var(--primary);
  transition: all 0.2s;
}
.faq-accordion .accordion-title::after { transform: rotate(90deg); }
.faq-accordion .accordion-item.is-active .accordion-title::after { transform: rotate(0deg); }
.faq-accordion .accordion-content {
  background: transparent;
  color: var(--text-weak);
  border: none;
  padding: 0 20px 20px;
  font-size: 0.93rem;
}
.faq-accordion .accordion-content p { margin-bottom: 0; }

.cta-section {
  position: relative;
  padding: 90px 0;
  background:
    linear-gradient(135deg, rgba(10, 15, 28, 0.9), rgba(28, 15, 68, 0.88)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border-top: 1px solid var(--border);
  text-align: center;
}
.cta-inner { max-width: 640px; margin: 0 auto; }
.cta-inner h2 { font-size: 2.2rem; font-weight: 900; margin-bottom: 14px; }
.cta-inner p { color: var(--text-weak); font-size: 1.05rem; margin-bottom: 30px; }

.site-footer {
  background: #0b101f;
  border-top: 1px solid var(--border-light);
  padding: 48px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
}
.footer-brand .footer-logo .logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #050a12;
  font-size: 0.85rem;
}
.footer-brand p { color: var(--text-weak); font-size: 0.9rem; max-width: 320px; }
.footer-col h4 { font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
.footer-col a {
  display: block;
  color: var(--text-weak);
  padding: 5px 0;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  margin-top: 38px;
  padding: 18px 0;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-dim);
  font-size: 0.8rem;
}

@media (max-width: 1024px) {
  :root { --space-xl: 56px; }
  .hero h1 { font-size: 2.5rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .match-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .mobile-header { display: flex; }
  .site-sidebar { transform: translateX(-100%); width: min(320px, 85vw); }
  .site-sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .hero { padding: 70px 0 60px; }
  .hero h1 { font-size: 2rem; }
  .hero-sub { font-size: 1rem; }
  .section { padding: 46px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .match-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .hero h1 { font-size: 1.65rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .button { width: 100%; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .post-item { flex-wrap: wrap; }
  .post-item .post-title { flex-basis: 100%; white-space: normal; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .cta-inner h2 { font-size: 1.7rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category1 */
:root {
  --primary: #b44cff;
  --primary-dark: #8e2fd6;
  --primary-light: #d9a6ff;
  --accent: #00f0ff;
  --accent-2: #ffd700;
  --bg-dark: #0a0714;
  --bg-deep: #080512;
  --bg-panel: #120c22;
  --bg-card: #1a1230;
  --text-main: #f4f0ff;
  --text-weak: #a99bc4;
  --text-dim: #7d6f9e;
  --border: rgba(180, 76, 255, 0.16);
  --border-light: rgba(0, 240, 255, 0.18);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow-box: 0 8px 32px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 24px rgba(180, 76, 255, 0.22);
  --space-section: 84px;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: inline-block; vertical-align: middle; }
a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
button, input, textarea { font-family: inherit; }

.container-wide { max-width: 1360px; margin: 0 auto; padding: 0 40px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.grid-container { max-width: 1360px; margin: 0 auto; padding: 0 40px; }
.section-pad { padding: var(--space-section) 0; }

/* 左侧导航 */
.site-layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0; bottom: 0; left: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 28px 22px;
  overflow-y: auto;
  backdrop-filter: blur(10px);
}
.sidebar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(180,76,255,0.06) 0%, transparent 40%), radial-gradient(circle at 30% 10%, rgba(0,240,255,0.05), transparent 45%);
  pointer-events: none;
  z-index: -1;
}
.side-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 6px 22px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.logo-mark {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  color: #fff;
  box-shadow: 0 4px 18px rgba(180, 76, 255, 0.4);
}
.logo-text { font-size: 21px; font-weight: 800; letter-spacing: 1px; color: var(--text-main); }
.logo-text span { color: var(--accent); }
.logo-sub { display: block; font-size: 11px; color: var(--text-weak); letter-spacing: 2px; margin-top: 1px; }

.side-nav { display: flex; flex-direction: column; gap: 8px; flex: 1; }
.side-nav a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-weak);
  border: 1px solid transparent;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.side-nav a i { width: 20px; text-align: center; font-size: 16px; }
.side-nav a:hover {
  color: var(--text-main);
  background: rgba(180, 76, 255, 0.1);
  border-color: rgba(180, 76, 255, 0.2);
  transform: translateX(4px);
}
.side-nav a.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(180,76,255,0.2), rgba(0,240,255,0.08));
  border-color: rgba(180, 76, 255, 0.4);
  box-shadow: 0 0 24px rgba(180, 76, 255, 0.15);
}
.side-nav a.active i { color: var(--accent); }

.side-footer-info {
  margin-top: auto;
  padding: 18px 12px 6px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.8;
}

.content-area {
  flex: 1;
  margin-left: 260px;
  padding: 0;
  background: var(--bg-dark);
  position: relative;
}
.content-area::before {
  content: '';
  position: fixed;
  inset: 0;
  margin-left: 260px;
  background: radial-gradient(ellipse at 70% 0%, rgba(180,76,255,0.07), transparent 50%), radial-gradient(ellipse at 20% 80%, rgba(0,240,255,0.04), transparent 45%);
  pointer-events: none;
  z-index: 0;
}
.content-inner { position: relative; z-index: 1; }

/* 顶部移动导航 */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(10, 7, 20, 0.92);
  backdrop-filter: blur(12px);
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}
.mobile-header .logo-row { display: flex; align-items: center; justify-content: space-between; }
.mobile-header .logo { display: flex; align-items: center; gap: 10px; }
.mobile-header .logo .logo-mark { width: 34px; height: 34px; border-radius: 9px; font-size: 16px; }
.mobile-header .logo span { font-weight: 800; font-size: 18px; }
.mobile-menu-btn {
  background: rgba(180, 76, 255, 0.15);
  border: 1px solid rgba(180, 76, 255, 0.3);
  color: var(--text-main);
  width: 40px; height: 40px;
  border-radius: 10px;
  font-size: 18px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s;
}
.mobile-menu-btn:hover { background: rgba(180, 76, 255, 0.3); }
.mobile-drawer {
  display: none;
  padding: 12px 4px 4px;
  flex-direction: column;
  gap: 6px;
}
.mobile-drawer.open { display: flex; }
.mobile-drawer a {
  padding: 12px 16px;
  border-radius: 10px;
  color: var(--text-weak);
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.mobile-drawer a:hover, .mobile-drawer a.active { background: rgba(180,76,255,0.15); color: var(--text-main); }
.mobile-drawer a.active { border-left: 3px solid var(--accent); }

/* 页面横幅 */
.page-banner {
  position: relative;
  padding: 72px 0 100px;
  background: linear-gradient(145deg, rgba(180,76,255,0.12), transparent 55%), linear-gradient(45deg, rgba(0,240,255,0.06), transparent 60%);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.22;
  z-index: -1;
}
.breadcrumb { display: flex; gap: 10px; align-items: center; font-size: 14px; color: var(--text-weak); margin-bottom: 18px; flex-wrap: wrap; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-dim); }
.page-title { font-size: 44px; font-weight: 900; line-height: 1.3; margin-bottom: 16px; }
.page-title .grad { background: linear-gradient(90deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.page-subtitle { font-size: 17px; color: var(--text-weak); max-width: 720px; line-height: 1.8; }
.badge-row { display: flex; gap: 10px; margin-top: 24px; flex-wrap: wrap; }

/* 标签 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid var(--border-light);
  background: rgba(0, 240, 255, 0.07);
  font-size: 13px;
  font-weight: 600;
  color: #b8f4ff;
  transition: all 0.3s ease;
}
.badge:hover { background: rgba(0, 240, 255, 0.15); border-color: var(--accent); box-shadow: 0 0 14px rgba(0,240,255,0.15); transform: translateY(-2px); }
.badge.purple { background: rgba(180,76,255,0.1); border-color: rgba(180,76,255,0.3); color: #e2c4ff; }
.badge.purple:hover { background: rgba(180,76,255,0.2); border-color: var(--primary); box-shadow: 0 0 14px rgba(180,76,255,0.2); }

/* 板块通用 */
.section-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 36px; gap: 20px; flex-wrap: wrap; }
.section-head.wide { margin-bottom: 30px; }
.section-tag { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--accent); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 10px; font-weight: 700; }
.section-tag::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.section-title { font-size: 30px; font-weight: 800; line-height: 1.35; letter-spacing: 0.5px; }
.section-desc { color: var(--text-weak); font-size: 15px; margin-top: 8px; max-width: 560px; }
.link-more { 
  display: inline-flex; align-items: center; gap: 8px; 
  color: var(--accent); font-weight: 700; font-size: 14px;
  padding: 10px 18px; border-radius: 100px; 
  border: 1px solid var(--border-light);
  background: rgba(0, 240, 255, 0.05);
  transition: all 0.3s ease;
}
.link-more:hover { background: rgba(0, 240, 255, 0.12); gap: 12px; border-color: var(--accent); box-shadow: 0 0 18px rgba(0,240,255,0.15); }

/* 内容卡片网格 */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card-grid.featured-lg { grid-template-columns: repeat(6, 1fr); }
.card-grid .card-featured-lg { grid-column: span 3; }
.card-grid .card-featured-sm { grid-column: span 2; }

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  transform: translateY(-6px) scale(1.01);
  border-color: rgba(180, 76, 255, 0.4);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(180, 76, 255, 0.12);
}
.post-card .card-cover {
  position: relative;
  height: 188px;
  overflow: hidden;
}
.post-card .card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.post-card:hover .card-cover img { transform: scale(1.08); }
.post-card .card-cover::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, var(--bg-card) 0%, transparent 60%); opacity: 0.6; }
.post-card .cover-badge {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 2;
}
.post-card .card-body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.post-card .card-meta { display: flex; gap: 14px; font-size: 12.5px; color: var(--text-dim); margin-bottom: 10px; align-items: center; flex-wrap: wrap; }
.post-card .card-meta i { font-size: 12px; }
.post-card .card-meta .live-dot { width: 6px; height: 6px; border-radius: 50%; background: #ff4d6d; display: inline-block; margin-right: 5px; animation: pulse 1.6s infinite; }
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255, 77, 109, 0.5); }
  50% { opacity: 0.6; box-shadow: 0 0 0 6px rgba(255, 77, 109, 0); }
}
.post-card .card-title { font-size: 17px; font-weight: 700; line-height: 1.65; margin-bottom: 10px; flex: 1; }
.post-card .card-title a { color: var(--text-main); }
.post-card .card-title a:hover { color: var(--accent); }
.post-card .card-excerpt { font-size: 14px; color: var(--text-weak); line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-card .card-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 18px; padding-top: 14px; border-top: 1px solid rgba(255,255,255,0.06); }
.post-card .read-link { font-size: 13px; color: var(--accent); font-weight: 700; display: inline-flex; gap: 6px; align-items: center; }
.post-card .read-link i { font-size: 12px; transition: transform 0.3s; }
.post-card .read-link:hover i { transform: translateX(4px); }

/* 大卡片 */
.card-featured-lg .card-cover { height: 240px; }
.card-featured-lg .card-title { font-size: 20px; }

/* 实时榜单 */
.live-board {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.live-board-header {
  padding: 22px 28px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.live-board-header h3 { font-size: 18px; font-weight: 800; display: flex; align-items: center; gap: 10px; }
.live-board-header h3 .live-bar { width: 8px; height: 20px; border-radius: 4px; background: linear-gradient(to bottom, var(--accent), var(--primary)); }
.live-board-list { padding: 0; }
.live-board-item {
  display: grid;
  grid-template-columns: 50px 1fr auto;
  align-items: center;
  padding: 18px 28px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: all 0.3s;
}
.live-board-item:last-child { border-bottom: none; }
.live-board-item:hover { background: rgba(180,76,255,0.05); }
.live-board-item .rank {
  width: 34px; height: 34px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 14px;
  background: rgba(255,255,255,0.06);
  color: var(--text-weak);
}
.live-board-item:nth-child(1) .rank { background: linear-gradient(135deg, #ffd700, #ff9f43); color: #1a1a1a; }
.live-board-item:nth-child(2) .rank { background: linear-gradient(135deg, #c0c0c0, #95a5a6); color: #1a1a1a; }
.live-board-item:nth-child(3) .rank { background: linear-gradient(135deg, #cd7f32, #e6a15e); color: #1a1a1a; }
.live-board-item .team { display: flex; align-items: center; gap: 14px; }
.live-board-item .team .team-name { font-weight: 700; font-size: 15px; }
.live-board-item .team .team-score { color: var(--text-weak); font-size: 13px; display: block; }
.live-board-item .status { font-size: 13px; font-weight: 700; padding: 5px 14px; border-radius: 100px; background: rgba(0,240,255,0.1); color: var(--accent); }

/* 赛程时间线 */
.schedule-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.schedule-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  display: flex;
  align-items: center;
  gap: 18px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.schedule-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: linear-gradient(to bottom, var(--primary), var(--accent)); opacity: 0; transition: opacity 0.3s; }
.schedule-card:hover { border-color: rgba(180,76,255,0.35); transform: translateY(-3px); box-shadow: var(--shadow-box); }
.schedule-card:hover::before { opacity: 1; }
.schedule-date { text-align: center; flex-shrink: 0; }
.schedule-date .day { font-size: 28px; font-weight: 900; color: var(--primary-light); line-height: 1.2; display: block; }
.schedule-date .month { font-size: 13px; color: var(--text-weak); text-transform: uppercase; }
.schedule-info { flex: 1; }
.schedule-info .vs { font-weight: 800; font-size: 16px; margin-bottom: 4px; }
.schedule-info .vs .gaming { color: var(--accent); }
.schedule-info .desc { font-size: 13px; color: var(--text-weak); }
.schedule-time { text-align: right; flex-shrink: 0; }
.schedule-time .time { font-size: 15px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 6px; }
.schedule-time .time i { color: var(--accent); font-size: 13px; }
.schedule-time .type { font-size: 12px; color: var(--text-dim); margin-top: 2px; }

/* 数据面板 */
.stats-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
}
.stats-panel::before { content: ''; position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; opacity: 0.12; z-index: 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; position: relative; z-index: 1; }
.stat-item { text-align: center; padding: 20px 10px; border-radius: var(--radius-md); background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.04); transition: all 0.3s; }
.stat-item:hover { background: rgba(180,76,255,0.06); border-color: rgba(180,76,255,0.2); }
.stat-number { font-size: 38px; font-weight: 900; background: linear-gradient(135deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; line-height: 1.2; }
.stat-label { font-size: 13.5px; color: var(--text-weak); margin-top: 6px; font-weight: 600; }

/* 资讯流 */
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-row {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 22px;
  transition: all 0.3s ease;
}
.news-row:hover { border-color: rgba(180,76,255,0.35); transform: translateX(6px); box-shadow: var(--shadow-box); }
.news-thumb { width: 90px; height: 64px; border-radius: 10px; overflow: hidden; flex-shrink: 0; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-content { flex: 1; }
.news-content h4 { font-size: 15.5px; font-weight: 700; margin-bottom: 4px; line-height: 1.6; }
.news-content h4 a:hover { color: var(--accent); }
.news-content p { font-size: 13px; color: var(--text-weak); line-height: 1.6; }
.news-tag { flex-shrink: 0; }

/* FAQ */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  transition: all 0.3s ease;
}
.faq-item:hover { border-color: rgba(180, 76, 255, 0.25); }
.faq-item summary {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 15.5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
  transition: all 0.3s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 14px; color: var(--accent); transition: transform 0.3s ease; }
.faq-item[open] summary { color: var(--accent); }
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item[open] { background: rgba(180, 76, 255, 0.04); }
.faq-body { padding: 0 24px 22px; font-size: 14.5px; color: var(--text-weak); line-height: 1.85; }

/* CTA */
.cta-section {
  position: relative;
  padding: 72px 0;
  background: linear-gradient(135deg, rgba(180,76,255,0.14), rgba(0,240,255,0.06));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  opacity: 0.14;
  z-index: 0;
}
.cta-inner { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; padding: 0 24px; }
.cta-badge { display: inline-block; padding: 6px 16px; border-radius: 100px; background: rgba(0,240,255,0.1); border: 1px solid rgba(0,240,255,0.3); color: var(--accent); font-size: 13px; font-weight: 700; margin-bottom: 16px; }
.cta-title { font-size: 32px; font-weight: 900; margin-bottom: 14px; line-height: 1.4; }
.cta-desc { font-size: 16px; color: var(--text-weak); margin-bottom: 30px; line-height: 1.8; }

/* 按钮 */
.btn-group { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 700;
  border: 1px solid var(--border-light);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  text-decoration: none;
}
.btn i { font-size: 14px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border: none;
  box-shadow: 0 6px 20px rgba(180, 76, 255, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(180, 76, 255, 0.55); color: #fff; }
.btn-outline { background: transparent; color: var(--text-main); }
.btn-outline:hover { background: rgba(0, 240, 255, 0.1); border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-focus:focus { outline: 3px solid rgba(0, 240, 255, 0.3); outline-offset: 2px; }
.btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* 页脚 */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 64px 0 28px;
  margin-top: 40px;
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
.footer-brand .footer-logo {
  display: flex; align-items: center; gap: 12px;
  font-size: 20px; font-weight: 800;
  color: var(--text-main);
  margin-bottom: 16px;
}
.footer-brand .footer-logo .logo-mark { width: 36px; height: 36px; border-radius: 10px; font-size: 16px; }
.footer-brand p { font-size: 14px; color: var(--text-weak); line-height: 1.9; max-width: 340px; }
.footer-col h4 { font-size: 15px; font-weight: 800; margin-bottom: 18px; color: var(--text-main); display: flex; align-items: center; gap: 8px; }
.footer-col h4::before { content: ''; width: 4px; height: 16px; border-radius: 2px; background: linear-gradient(to bottom, var(--primary), var(--accent)); }
.footer-col a {
  display: block;
  color: var(--text-weak);
  font-size: 14px;
  padding: 7px 0;
  transition: all 0.3s ease;
}
.footer-col a:hover { color: var(--accent); padding-left: 6px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-dim);
}

/* 响应式 */
@media screen and (max-width: 1024px) {
  .container-wide, .grid-container, .container { padding: 0 24px; }
  .sidebar { width: 220px; padding: 22px 16px; }
  .content-area { margin-left: 220px; }
  .content-area::before { margin-left: 220px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid .card-featured-lg { grid-column: span 2; }
  .card-grid .card-featured-sm { grid-column: span 1; }
  .schedule-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}

@media screen and (max-width: 768px) {
  :root { --space-section: 60px; }
  .sidebar { display: none; }
  .mobile-header { display: block; }
  .content-area { margin-left: 0; }
  .content-area::before { margin-left: 0; }
  .grid-container { padding: 0 20px; }
  .page-banner { padding: 52px 0 72px; }
  .page-title { font-size: 32px; }
  .card-grid { grid-template-columns: 1fr; gap: 20px; }
  .card-grid .card-featured-lg { grid-column: span 1; }
  .card-grid .card-featured-sm { grid-column: span 1; }
  .card-featured-lg .card-cover { height: 200px; }
  .post-card .card-cover { height: 180px; }
  .live-board-item { grid-template-columns: 44px 1fr auto; padding: 14px 18px; gap: 8px; }
  .news-row { flex-wrap: wrap; padding: 16px; }
  .news-thumb { width: 100%; height: 140px; }
  .news-tag { display: none; }
  .section-title { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .schedule-card { flex-wrap: wrap; }
  .schedule-time { text-align: left; width: 100%; padding-left: 74px; }
  .btn { padding: 12px 24px; font-size: 14px; }
  .cta-section { padding: 48px 0; }
  .cta-title { font-size: 26px; }
}

@media screen and (max-width: 520px) {
  .grid-container { padding: 0 16px; }
  .page-title { font-size: 27px; }
  .badge { padding: 5px 12px; font-size: 12px; }
  .live-board-item { grid-template-columns: 38px 1fr; }
  .live-board-item .status { grid-column: 2; justify-self: start; margin-top: 4px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .section-title { font-size: 21px; }
  .schedule-card { padding: 16px; }
  .schedule-time { padding-left: 0; }
  .mobile-header { padding: 12px 16px; }
}

/* roulang page: article */
/* ===== Design Tokens ===== */
:root {
  --primary: #7b5cff;
  --primary-dark: #5a3ee0;
  --primary-light: #b29aff;
  --secondary: #00d4c2;
  --accent: #ff6ea9;
  --gold: #ffc76e;
  --bg-deep: #080b16;
  --bg-body: #0c101d;
  --bg-card: #121828;
  --bg-elevated: #1a2138;
  --text-hi: #f3f5fb;
  --text-mid: #a3adc9;
  --text-low: #66738f;
  --line: rgba(255,255,255,0.07);
  --line-soft: rgba(255,255,255,0.04);
  --radius-lg: 22px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 6px 16px rgba(0,0,0,0.22);
  --shadow: 0 18px 40px rgba(0,0,0,0.35);
  --shadow-lg: 0 30px 70px rgba(0,0,0,0.5);
  --glow-primary: 0 0 28px rgba(123,92,255,0.28);
  --ease: all .3s cubic-bezier(.4,0,.2,1);
  --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, monospace;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-body);
  color: var(--text-hi);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at 85% 8%, rgba(123,92,255,0.08), transparent 52%),
    radial-gradient(ellipse at 8% 92%, rgba(0,212,194,0.06), transparent 50%);
  pointer-events: none;
}
a { color: var(--secondary); text-decoration: none; transition: var(--ease); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; padding: 0; }
button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; color: inherit; background: none; border: none; }
h1, h2, h3, h4, h5 { font-weight: 800; line-height: 1.3; letter-spacing: .5px; }
a:focus-visible, button:focus-visible { outline: 3px solid rgba(123,92,255,0.55); outline-offset: 2px; border-radius: 4px; }

/* ===== Utilities ===== */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
  position: relative;
}
.grid-container {
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 32px;
  padding-right: 32px;
}
.text-gradient {
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--ease);
  text-align: center;
  white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 140%);
  color: #fff;
  box-shadow: 0 8px 20px rgba(123,92,255,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(123,92,255,0.42); color: #fff; }
.btn-primary:active { transform: translateY(0); box-shadow: 0 6px 14px rgba(123,92,255,0.3); }
.btn-outline {
  border-color: var(--line);
  color: var(--text-hi);
  background: rgba(255,255,255,0.03);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary-light); background: rgba(123,92,255,0.08); transform: translateY(-2px); }
.btn-lg { padding: 16px 34px; font-size: 16px; }
.btn:focus-visible { outline: 3px solid rgba(123,92,255,.5); outline-offset: 2px; }

/* ===== Badges & Tags ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 15px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 1px;
  background: linear-gradient(135deg, rgba(123,92,255,0.18), rgba(0,212,194,0.12));
  color: var(--primary-light);
  border: 1px solid rgba(123,92,255,0.35);
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--line);
  color: var(--text-mid);
  transition: var(--ease);
}
.tag:hover { color: var(--text-hi); border-color: var(--primary); background: rgba(123,92,255,0.12); }

/* ===== Layout Shell ===== */
.site-shell { min-height: 100vh; }

/* ===== Mobile Topbar ===== */
.mobile-topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 1030;
  height: 64px;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: rgba(8,11,22,0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.menu-toggle {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--text-hi);
  font-size: 16px;
  cursor: pointer;
  transition: var(--ease);
  background: rgba(255,255,255,0.04);
}
.menu-toggle:hover { border-color: var(--primary); color: var(--primary-light); }
.mobile-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  color: var(--text-hi);
  font-size: 17px;
}
.mobile-brand .logo-mark { width: 32px; height: 32px; font-size: 14px; border-radius: 9px; }
.mobile-top-link {
  width: 40px; height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--text-mid);
  font-size: 15px;
  transition: var(--ease);
}
.mobile-top-link:hover { color: var(--primary-light); border-color: var(--primary); }

/* ===== Sidebar Nav ===== */
.sidebar {
  width: 264px;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 1040;
  background: linear-gradient(180deg, #0b0f1f 0%, #111830 100%);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 22px 16px;
  transition: transform .35s cubic-bezier(.4,0,.2,1);
}
.brand { padding: 4px 10px 18px; margin-bottom: 12px; border-bottom: 1px solid var(--line); }
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 900;
  color: var(--text-hi);
}
.brand-logo:hover { color: var(--text-hi); }
.logo-mark {
  width: 42px;
  height: 42px;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  font-size: 20px;
  color: #fff;
  box-shadow: var(--glow-primary);
}
.brand-slogan { font-size: 12.5px; color: var(--text-low); margin-top: 10px; padding-left: 2px; letter-spacing: 1px; }
.side-nav { display: flex; flex-direction: column; gap: 8px; flex: 1; }
.side-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  color: var(--text-mid);
  border: 1px solid transparent;
  transition: var(--ease);
}
.side-nav a i { width: 20px; text-align: center; font-size: 16px; flex: none; }
.side-nav a:hover {
  color: var(--text-hi);
  background: rgba(255,255,255,0.05);
  transform: translateX(5px);
}
.side-nav a.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(123,92,255,0.35), rgba(0,212,194,0.12));
  border-color: rgba(123,92,255,0.4);
  box-shadow: var(--glow-primary);
}
.nav-card {
  padding: 14px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(123,92,255,0.12), rgba(0,212,194,0.06));
  border: 1px solid rgba(123,92,255,0.2);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.nav-card-icon {
  width: 38px; height: 38px;
  flex: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
}
.nav-card-text { display: flex; flex-direction: column; }
.nav-card-text strong { font-size: 14px; color: var(--text-hi); }
.nav-card-text span { font-size: 12px; color: var(--text-low); }
.side-note {
  padding: 14px 8px 4px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--text-low);
  line-height: 1.6;
}
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2,4,10,0.6);
  z-index: 1035;
  opacity: 0;
  visibility: hidden;
  transition: var(--ease);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.nav-overlay.open { opacity: 1; visibility: visible; }

/* ===== Main Wrap ===== */
.main-wrap {
  margin-left: 264px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}
.main-wrap main { flex: 1; }

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  padding: 68px 0 58px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--bg-deep);
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(8,11,22,0.72) 0%, rgba(8,11,22,0.92) 68%, var(--bg-body) 100%);
}
.article-hero-content { position: relative; z-index: 2; max-width: 900px; }
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text-low);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-mid); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb .sep { color: var(--text-low); }
.breadcrumb .current { color: var(--secondary); font-weight: 600; }
.article-hero-content .badge { margin-bottom: 18px; }
.article-title {
  font-size: clamp(26px, 4.2vw, 40px);
  font-weight: 900;
  line-height: 1.24;
  margin: 14px 0 18px;
  letter-spacing: .5px;
  color: var(--text-hi);
}
.meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 14px;
  color: var(--text-mid);
}
.meta-row span { display: inline-flex; align-items: center; gap: 7px; }
.meta-row i { color: var(--primary-light); }

/* ===== Article Main ===== */
.article-main { padding: 48px 0 64px; }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px;
  align-items: start;
}

/* ===== Article Card ===== */
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.article-cover {
  margin: -28px -28px 28px;
  aspect-ratio: 16 / 8;
  overflow: hidden;
  position: relative;
  background: var(--bg-elevated);
}
.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.article-card:hover .article-cover img { transform: scale(1.02); }

/* ===== Article Content Typography ===== */
.article-content { font-size: 16.5px; line-height: 1.9; color: var(--text-mid); }
.article-content > * { margin-top: 0; }
.article-content > * + * { margin-top: 1.1em; }
.article-content h2 {
  font-size: 24px;
  color: var(--text-hi);
  padding: 14px 0 10px;
  margin-top: 1.6em;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.article-content h2::before {
  content: '';
  position: absolute;
  left: -18px;
  top: 18px;
  width: 5px;
  height: 24px;
  border-radius: 4px;
  background: linear-gradient(var(--primary), var(--secondary));
}
.article-content h3 {
  font-size: 20px;
  color: var(--text-hi);
  margin-top: 1.4em;
}
.article-content h4 {
  font-size: 17px;
  color: var(--text-hi);
  margin-top: 1.2em;
}
.article-content p { color: var(--text-mid); }
.article-content ul,
.article-content ol { padding-left: 22px; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin: 6px 0; }
.article-content blockquote {
  padding: 18px 22px;
  border-left: 4px solid var(--primary);
  background: rgba(123,92,255,0.08);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-hi);
  font-style: italic;
}
.article-content img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin: 12px 0;
}
.article-content a {
  color: var(--primary-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover { color: var(--secondary); }
.article-content strong { color: var(--text-hi); font-weight: 700; }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.article-content th {
  background: rgba(123,92,255,0.16);
  color: var(--text-hi);
  padding: 12px 14px;
  font-weight: 700;
  text-align: left;
}
.article-content td {
  padding: 11px 14px;
  border-top: 1px solid var(--line);
  color: var(--text-mid);
}
.article-content pre {
  background: #0b0f1f;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 18px;
  overflow: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-mid);
}
.article-content code { font-family: var(--font-mono); }

/* ===== Article Tags ===== */
.article-tags {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.tags-label {
  color: var(--text-low);
  font-size: 14px;
  font-weight: 600;
  margin-right: 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ===== Article Sidebar ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 90px;
}
.widget {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  overflow: hidden;
  transition: var(--ease);
}
.widget:hover { border-color: rgba(123,92,255,0.3); box-shadow: var(--shadow-sm); }
.widget h3 {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-hi);
}
.widget h3 i { color: var(--primary-light); }
.widget-cover {
  margin: -22px -22px 18px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-elevated);
}
.widget-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.widget:hover .widget-cover img { transform: scale(1.04); }
.widget-list { display: flex; flex-direction: column; gap: 2px; }
.widget-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 4px;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
}
.widget-list li:last-child { border-bottom: none; }
.widget-list li span { color: var(--text-mid); }
.widget-list li strong { color: var(--secondary); font-weight: 800; text-align: right; }
.widget p { font-size: 14px; color: var(--text-mid); margin-bottom: 14px; line-height: 1.7; }
.widget .btn { width: 100%; }

/* ===== Not Found ===== */
.not-found {
  text-align: center;
  padding: 60px 20px;
}
.not-found i {
  font-size: 46px;
  color: var(--primary-light);
  margin-bottom: 18px;
  display: inline-block;
}
.not-found h2 { font-size: 28px; margin-bottom: 10px; color: var(--text-hi); }
.not-found p { color: var(--text-mid); margin-bottom: 24px; font-size: 15px; }
.not-found .btn { min-width: 160px; }

/* ===== Stats Band ===== */
.stats-band {
  background: linear-gradient(135deg, #0b0f1f 0%, #141b33 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 52px 0;
  position: relative;
  overflow: hidden;
}
.stats-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 0%, rgba(123,92,255,0.14), transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(0,212,194,0.1), transparent 50%);
}
.stats-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item { padding: 20px 10px; }
.stat-num {
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 6px;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-label { color: var(--text-mid); font-size: 14px; font-weight: 600; }

/* ===== CTA Band ===== */
.cta-band { padding: 74px 0; }
.cta-box {
  position: relative;
  background: linear-gradient(135deg, rgba(123,92,255,0.2), rgba(0,212,194,0.08));
  border: 1px solid rgba(123,92,255,0.3);
  border-radius: 28px;
  padding: 48px 48px;
  text-align: center;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.1;
}
.cta-box > * { position: relative; z-index: 2; }
.cta-box h2 {
  font-size: clamp(24px, 3.4vw, 34px);
  color: #fff;
  margin-bottom: 12px;
}
.cta-box p {
  color: var(--text-mid);
  max-width: 560px;
  margin: 0 auto 26px;
  font-size: 15.5px;
}
.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
}

/* ===== FAQ Section ===== */
.faq-section { padding: 70px 0 80px; }
.section-head { text-align: center; margin-bottom: 42px; }
.section-head .badge { margin-bottom: 12px; }
.section-head h2 {
  font-size: clamp(24px, 3.4vw, 34px);
  color: var(--text-hi);
  margin-bottom: 10px;
}
.section-head p {
  color: var(--text-mid);
  max-width: 600px;
  margin: 0 auto;
  font-size: 15px;
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: var(--ease);
  cursor: pointer;
}
.faq-item:hover {
  border-color: rgba(123,92,255,0.35);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 700;
  font-size: 16px;
  color: var(--text-hi);
}
.faq-question i {
  color: var(--primary-light);
  transition: transform .3s ease;
  font-size: 18px;
  flex: none;
}
.faq-item.open .faq-question i { transform: rotate(135deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, margin-top .3s ease;
  color: var(--text-mid);
  font-size: 14.5px;
  line-height: 1.75;
}
.faq-item.open .faq-answer { max-height: 240px; margin-top: 12px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--line);
  padding: 56px 0 28px;
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}
.footer-brand .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-hi);
  font-weight: 900;
  font-size: 19px;
  margin-bottom: 14px;
}
.footer-brand .footer-logo:hover { color: var(--text-hi); }
.footer-brand p {
  color: var(--text-mid);
  font-size: 14px;
  max-width: 360px;
  line-height: 1.8;
}
.footer-col h4 { color: var(--text-hi); font-size: 16px; margin-bottom: 16px; }
.footer-col a {
  display: block;
  color: var(--text-mid);
  font-size: 14px;
  padding: 7px 0;
  transition: var(--ease);
}
.footer-col a:hover { color: var(--primary-light); transform: translateX(4px); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 24px;
  color: var(--text-low);
  font-size: 13px;
}

/* ===== Responsive ===== */
@media screen and (max-width: 1023px) {
  .sidebar {
    transform: translateX(-105%);
    box-shadow: var(--shadow-lg);
    width: 280px;
  }
  .sidebar.open { transform: translateX(0); }
  .main-wrap { margin-left: 0; }
  .mobile-topbar { display: flex; }
}

@media screen and (max-width: 992px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
}

@media screen and (max-width: 760px) {
  .container { padding: 0 20px; }
  .grid-container { padding-left: 20px; padding-right: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .cta-box { padding: 36px 22px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .article-hero { padding: 48px 0 40px; }
  .article-main { padding: 32px 0 48px; }
  .article-card { padding: 20px; }
  .article-cover { margin: -20px -20px 20px; aspect-ratio: 16 / 9; }
  .article-content { font-size: 15.5px; }
  .article-title { font-size: 24px; }
  .meta-row { gap: 12px; font-size: 13px; }
  .faq-section { padding: 50px 0 60px; }
  .cta-band { padding: 50px 0; }
  .faq-question { font-size: 15px; }
  .faq-item { padding: 18px 18px; }
}

/* roulang page: category2 */
:root{
  --bg:#080d1a;
  --bg-soft:#0e1526;
  --panel:#141c31;
  --panel-2:#1a2440;
  --border:#233052;
  --border-light:#34406e;
  --text:#e7ecf7;
  --text-soft:#97a3c0;
  --text-mute:#677395;
  --primary:#00e6a8;
  --primary-2:#00c988;
  --primary-bg:rgba(0,230,168,.12);
  --accent:#7c6cff;
  --pink:#ff3d81;
  --warning:#ffb020;
  --danger:#ff5470;
  --radius:18px;
  --radius-sm:10px;
  --shadow:0 22px 55px rgba(0,0,0,.45);
  --glow:0 0 26px rgba(0,230,168,.3);
  --transition:.25s ease;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:var(--primary);text-decoration:none;transition:color var(--transition),box-shadow var(--transition)}
a:hover{color:var(--primary-2)}
h1,h2,h3,h4,h5,h6{
  color:#ffffff;
  font-weight:800;
  line-height:1.28;
  letter-spacing:-.01em;
}
h1 .hl,h2 .hl,h3 .hl{color:var(--primary)}
p{color:var(--text-soft)}
ul{list-style:none}
button,.button{border:none;background:transparent;font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit}

.grid-container{max-width:1280px;margin:0 auto;padding:0 32px}
.grid-padding-x>.cell{padding:0 14px}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{margin:0 12px}

.page-shell{display:flex;min-height:100vh;align-items:flex-start}
.site-header{
  width:272px;
  flex-shrink:0;
  position:sticky;
  top:0;
  height:100vh;
  background:linear-gradient(180deg,#0d1428 0%,#101a33 60%,#0a101f 100%);
  border-right:1px solid var(--border);
  padding:32px 22px 26px;
  display:flex;
  flex-direction:column;
  z-index:200;
}
.brand-block{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:0 8px 26px;
  border-bottom:1px solid var(--border);
}
.brand-logo{
  display:flex;
  align-items:center;
  gap:12px;
  color:#ffffff;
  font-weight:900;
  font-size:20px;
  letter-spacing:.02em;
}
.brand-logo:hover{color:var(--primary)}
.brand-icon{
  width:42px;height:42px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#05120d;
  border-radius:12px;
  font-size:20px;
  box-shadow:var(--glow);
}
.brand-name{font-family:'Rajdhani','Noto Sans SC',sans-serif;font-size:24px;letter-spacing:1px}
.brand-tag{
  color:var(--text-mute);
  font-size:12px;
  letter-spacing:2px;
  text-transform:uppercase;
  margin-left:54px;
}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  background:var(--primary-bg);
  border:1px solid var(--border-light);
  color:var(--primary);
  font-size:18px;
  align-items:center;
  justify-content:center;
}

.side-nav{
  display:flex;
  flex-direction:column;
  gap:6px;
  margin-top:22px;
  flex:1;
}
.side-nav a{
  display:flex;
  align-items:center;
  gap:13px;
  padding:13px 16px;
  border-radius:13px;
  color:var(--text-soft);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:var(--transition);
}
.side-nav a i{width:20px;text-align:center;font-size:15px;color:var(--text-mute);transition:var(--transition)}
.side-nav a:hover{
  color:var(--text);
  background:rgba(255,255,255,.04);
  border-color:var(--border);
}
.side-nav a:hover i{color:var(--primary)}
.side-nav a.active{
  color:#ffffff;
  background:linear-gradient(90deg,var(--primary-bg),rgba(124,108,255,.08));
  border-color:rgba(0,230,168,.35);
  box-shadow:inset 0 0 0 1px rgba(0,230,168,.08);
}
.side-nav a.active i{color:var(--primary)}
.side-nav .nav-label{margin-left:auto;font-size:11px;background:rgba(0,230,168,.14);color:var(--primary);padding:2px 9px;border-radius:20px;font-weight:500}

.header-support{
  margin-top:18px;
  padding:18px 14px;
  border:1px solid var(--border);
  border-radius:16px;
  background:rgba(255,255,255,.03);
}
.header-support .support-row{
  display:flex;align-items:center;gap:9px;
  color:var(--text-soft);
  font-size:13px;
  font-weight:600;
  margin-bottom:8px;
}
.online-dot{
  width:8px;height:8px;
  background:var(--primary);
  border-radius:50%;
  box-shadow:0 0 12px var(--primary);
  animation:pulse 1.6s infinite;
}
@keyframes pulse{
  0%,100%{transform:scale(1);opacity:1}
  50%{transform:scale(1.4);opacity:.6}
}
.header-support a{font-size:13px;color:var(--primary);word-break:break-all}

.content-area{flex:1;min-width:0;display:flex;flex-direction:column}

.page-hero{
  min-height:430px;
  padding:96px 0 72px;
  background:
    linear-gradient(100deg,rgba(8,13,26,.94) 20%,rgba(8,13,26,.7) 60%,rgba(8,13,26,.55)),
    url('/assets/images/backpic/back-2.png') center 30%/cover no-repeat;
  border-bottom:1px solid var(--border);
  position:relative;
  overflow:hidden;
}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(0,230,168,.13);
  border:1px solid rgba(0,230,168,.3);
  color:var(--primary);
  font-size:13px;
  font-weight:700;
  padding:7px 16px;
  border-radius:40px;
  letter-spacing:1px;
  margin-bottom:20px;
}
.hero-kicker i{font-size:14px}
.page-hero h1{font-size:52px;font-weight:900;letter-spacing:-.02em;margin-bottom:20px}
.page-hero h1 .hl{color:var(--primary)}
.hero-sub{
  max-width:620px;
  color:var(--text-soft);
  font-size:17px;
  line-height:1.9;
  margin-bottom:38px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:14px 30px;
  border-radius:14px;
  font-size:15px;
  font-weight:700;
  line-height:1;
  transition:var(--transition);
  border:1px solid transparent;
  cursor:pointer;
}
.btn:focus-visible{outline:3px solid rgba(0,230,168,.45);outline-offset:3px}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#04120d;
  box-shadow:0 10px 30px rgba(0,230,168,.28);
}
.btn-primary:hover{
  color:#04120d;
  transform:translateY(-3px);
  box-shadow:0 16px 40px rgba(0,230,168,.36);
}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border-color:var(--border-light);
  color:var(--text);
}
.btn-ghost:hover{
  color:var(--primary);
  border-color:var(--primary);
  background:var(--primary-bg);
  transform:translateY(-3px);
}
.btn-light{
  background:#ffffff;
  color:#101628;
}
.btn-light:hover{
  color:#101628;
  transform:translateY(-3px);
  box-shadow:0 12px 28px rgba(255,255,255,.2);
}

/* ---------- stats ---------- */
.section{
  padding:92px 0;
}
.stats-section{
  background:var(--bg-soft);
  border-bottom:1px solid var(--border);
  padding:56px 0;
}
.stats-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:26px 20px;
  text-align:center;
  transition:var(--transition);
}
.stats-card:hover{
  transform:translateY(-5px);
  border-color:rgba(0,230,168,.35);
  box-shadow:var(--shadow);
}
.stats-icon{
  width:46px;height:46px;
  margin:0 auto 14px;
  display:flex;align-items:center;justify-content:center;
  border-radius:13px;
  background:var(--primary-bg);
  color:var(--primary);
  font-size:18px;
}
.stats-num{
  font-family:'Rajdhani','Noto Sans SC',sans-serif;
  font-size:34px;
  font-weight:800;
  color:#fff;
  line-height:1.2;
  letter-spacing:1px;
}
.stats-label{color:var(--text-mute);font-size:13px;margin-top:5px;font-weight:500}

/* ---------- section header ---------- */
.section-header{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary);
  font-size:13px;
  font-weight:700;
  letter-spacing:1.5px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:var(--primary);
  display:inline-block;
  border-radius:20px;
}
.section-header h2{font-size:36px;font-weight:900;margin-bottom:14px}
.section-header p{color:var(--text-soft);font-size:16px;line-height:1.85}
.section-header.center{margin-left:auto;margin-right:auto;text-align:center}
.section-header.center .eyebrow::after{
  content:"";
  width:22px;height:2px;
  background:var(--primary);
  display:inline-block;
  border-radius:20px;
}
.section-header.center .eyebrow{align-items:center;justify-content:center}

/* ---------- module cards ---------- */
.module-section{background:var(--bg)}
.module-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:var(--transition);
  height:100%;
  display:flex;
  flex-direction:column;
}
.module-card:hover{
  transform:translateY(-6px);
  border-color:rgba(0,230,168,.4);
  box-shadow:var(--shadow);
}
.module-thumb{
  position:relative;
  height:166px;
  overflow:hidden;
}
.module-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;
}
.module-card:hover .module-thumb img{transform:scale(1.06)}
.module-badge{
  position:absolute;
  top:14px;left:14px;
  background:rgba(8,13,26,.82);
  backdrop-filter:blur(6px);
  color:var(--primary);
  font-size:12px;
  font-weight:700;
  padding:4px 12px;
  border-radius:30px;
  border:1px solid rgba(0,230,168,.35);
}
.module-body{padding:22px 22px 26px;flex:1;display:flex;flex-direction:column}
.module-body h3{font-size:19px;margin-bottom:10px}
.module-body h3 a{color:#fff}
.module-body h3 a:hover{color:var(--primary)}
.module-body p{font-size:14px;line-height:1.8;color:var(--text-soft);flex:1}
.module-more{
  margin-top:16px;
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--primary);
  font-size:14px;
  font-weight:700;
  transition:var(--transition);
}
.module-more i{font-size:12px;transition:transform var(--transition)}
.module-more:hover{gap:11px}

/* ---------- steps ---------- */
.steps-section{
  background:
    linear-gradient(rgba(8,13,26,.94),rgba(10,16,34,.94)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.step-card{
  background:rgba(255,255,255,.035);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:26px 20px;
  position:relative;
  transition:var(--transition);
  height:100%;
}
.step-card:hover{
  transform:translateY(-6px);
  border-color:rgba(0,230,168,.4);
  background:rgba(0,230,168,.06);
}
.step-num{
  font-family:'Rajdhani','Noto Sans SC',sans-serif;
  font-size:14px;
  font-weight:800;
  color:var(--primary);
  background:var(--primary-bg);
  border:1px solid rgba(0,230,168,.3);
  width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  margin-bottom:16px;
}
.step-card h3{font-size:16px;margin-bottom:8px}
.step-card p{font-size:13px;color:var(--text-soft);line-height:1.8}
.step-arrow{
  display:none;
}
.steps-grid .cell{position:relative}
.steps-grid .cell:not(:last-child)::after{
  content:"\f054";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  right:-16px;
  top:50%;
  transform:translateY(-50%);
  color:var(--primary);
  font-size:13px;
  z-index:2;
  opacity:.5;
}

/* ---------- tips ---------- */
.tips-section{background:var(--bg-soft)}
.tips-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 24px;
  height:100%;
  display:flex;
  flex-direction:column;
  transition:var(--transition);
}
.tips-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow);
  border-color:var(--border-light);
}
.tips-icon{
  width:48px;height:48px;
  border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary-bg),rgba(124,108,255,.14));
  color:var(--primary);
  font-size:18px;
  margin-bottom:18px;
}
.tips-card h3{font-size:17px;margin-bottom:10px}
.tips-card p{font-size:14px;line-height:1.8;color:var(--text-soft);flex:1}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  display:inline-flex;
  align-items:center;
  gap:5px;
  background:rgba(255,255,255,.045);
  border:1px solid var(--border);
  color:var(--text-soft);
  font-size:12px;
  padding:4px 11px;
  border-radius:30px;
  font-weight:500;
}
.tag.hot{color:var(--pink);border-color:rgba(255,61,129,.35);background:rgba(255,61,129,.08)}
.tag.newbie{color:var(--warning);border-color:rgba(255,176,32,.35);background:rgba(255,176,32,.08)}
.tag.pro{color:var(--accent);border-color:rgba(124,108,255,.35);background:rgba(124,108,255,.08)}

/* ---------- bracket ---------- */
.bracket-section{
  background:
    linear-gradient(115deg,rgba(14,21,38,.96),rgba(10,16,30,.92)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  position:relative;
}
.bracket-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr auto 1fr;
  gap:18px;
  align-items:center;
}
.bracket-card{
  background:rgba(13,19,36,.9);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:30px 24px;
  text-align:center;
  transition:var(--transition);
  position:relative;
}
.bracket-card:hover{
  transform:translateY(-6px) scale(1.02);
  border-color:rgba(0,230,168,.45);
  box-shadow:var(--glow);
}
.bracket-rank{
  width:34px;height:34px;
  margin:0 auto 14px;
  border-radius:10px;
  font-family:'Rajdhani','Noto Sans SC',sans-serif;
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-bg);
  color:var(--primary);
  border:1px solid rgba(0,230,168,.3);
}
.bracket-card.dark .bracket-rank{background:rgba(124,108,255,.14);color:var(--accent);border-color:rgba(124,108,255,.35)}
.bracket-card.cool .bracket-rank{background:rgba(255,61,129,.12);color:var(--pink);border-color:rgba(255,61,129,.3)}
.bracket-card h3{font-size:18px;margin-bottom:10px}
.bracket-card p{font-size:14px;line-height:1.8;color:var(--text-soft);margin-bottom:16px}
.bracket-meta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  color:var(--text-mute);
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  padding:4px 12px;
  border-radius:30px;
}
.bracket-vs{
  font-family:'Rajdhani','Noto Sans SC',sans-serif;
  font-weight:800;
  font-size:22px;
  color:var(--primary);
  text-shadow:0 0 18px rgba(0,230,168,.6);
  letter-spacing:2px;
  text-align:center;
  padding:0 6px;
}

/* ---------- faq ---------- */
.faq-section{background:var(--bg)}
.faq-panel{
  max-width:880px;
  margin:0 auto;
}
.faq-item{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  margin-bottom:12px;
  overflow:hidden;
  transition:var(--transition);
}
.faq-item:hover{border-color:var(--border-light)}
.faq-item.active{border-color:rgba(0,230,168,.4);box-shadow:0 10px 32px rgba(0,0,0,.25)}
.faq-toggle{
  width:100%;
  text-align:left;
  padding:22px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  color:#fff;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:var(--transition);
}
.faq-toggle:hover{color:var(--primary)}
.faq-toggle i{
  color:var(--primary);
  transition:transform var(--transition);
  font-size:14px;
  flex-shrink:0;
}
.faq-item.active .faq-toggle i{transform:rotate(180deg)}
.faq-answer{
  display:none;
  padding:0 24px 24px;
}
.faq-answer p{
  color:var(--text-soft);
  font-size:14px;
  line-height:1.9;
  border-left:3px solid var(--primary);
  padding-left:16px;
}

/* ---------- cta ---------- */
.cta-section{
  background:
    linear-gradient(120deg,rgba(8,13,26,.93),rgba(12,18,34,.9)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-top:1px solid var(--border);
  padding:92px 0;
  text-align:center;
}
.cta-box{
  max-width:760px;
  margin:0 auto;
}
.cta-box h2{font-size:38px;font-weight:900;margin-bottom:18px}
.cta-box h2 .hl{color:var(--primary)}
.cta-box p{color:var(--text-soft);font-size:16px;line-height:1.9;margin-bottom:36px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta-note{
  margin-top:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  color:var(--text-mute);
  font-size:13px;
}
.cta-note i{color:var(--primary)}

/* ---------- footer ---------- */
.site-footer{
  background:#070b17;
  border-top:1px solid var(--border);
  padding:64px 0 0;
}
.site-footer .grid-container{padding:0 32px}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr;
  gap:50px;
  padding-bottom:44px;
  border-bottom:1px solid var(--border);
}
.footer-logo{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:20px;
  font-weight:900;
  margin-bottom:16px;
}
.logo-mark{
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-radius:11px;
  color:#04120d;
  font-size:17px;
}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--text-mute);max-width:340px}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:1px;
}
.footer-col a{
  display:block;
  color:var(--text-soft);
  font-size:14px;
  padding:6px 0;
  transition:var(--transition);
}
.footer-col a:hover{
  color:var(--primary);
  padding-left:6px;
}
.footer-bottom{
  padding:22px 0;
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  color:var(--text-mute);
  font-size:13px;
}

/* ---------- responsive ---------- */
@media(max-width:1180px){
  .site-header{width:230px;padding:26px 16px}
  .brand-name{font-size:20px}
  .brand-tag{margin-left:4px}
  .grid-container{padding:0 22px}
  .section{padding:78px 0}
  .steps-grid .cell:not(:last-child)::after{display:none}
  .bracket-wrap{gap:12px}
  .bracket-card{padding:24px 18px}
}
@media(max-width:1024px){
  .page-shell{flex-direction:column}
  .site-header{
    width:100%;
    height:auto;
    position:sticky;
    flex-direction:row;
    align-items:center;
    padding:16px 20px;
    border-right:none;
    border-bottom:1px solid var(--border);
    z-index:300;
  }
  .brand-block{
    flex-direction:row;
    align-items:center;
    gap:12px;
    padding:0;
    border-bottom:none;
    flex:1;
  }
  .brand-icon{width:36px;height:36px;font-size:16px}
  .brand-name{font-size:18px}
  .brand-tag{display:none}
  .nav-toggle{
    display:flex;
    margin-left:auto;
  }
  .side-nav{
    position:fixed;
    top:64px;
    left:0;
    width:100%;
    background:#0c1223;
    border-bottom:1px solid var(--border);
    padding:12px 16px 20px;
    display:none;
    box-shadow:0 22px 36px rgba(0,0,0,.4);
    z-index:290;
    max-height:calc(100vh - 64px);
    overflow-y:auto;
  }
  .site-header.nav-open .side-nav{
    display:flex;
  }
  .header-support{display:none}
  .content-area{padding-top:0}
  .page-hero{padding:70px 0 56px}
  .page-hero h1{font-size:38px}
  .section-header h2{font-size:30px}
  .bracket-wrap{
    grid-template-columns:1fr;
    gap:20px;
  }
  .bracket-vs{
    transform:none;
    font-size:18px;
    padding:0;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:34px;
  }
}
@media(max-width:768px){
  body{font-size:15px}
  .grid-container{padding:0 20px}
  .section{padding:62px 0}
  .page-hero{min-height:360px;padding:56px 0 44px}
  .page-hero h1{font-size:30px;line-height:1.3}
  .hero-sub{font-size:15px}
  .btn{padding:12px 22px;font-size:14px}
  .section-header h2{font-size:26px}
  .section-header p{font-size:15px}
  .stats-num{font-size:28px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;text-align:center;justify-content:center}
  .steps-grid .cell:not(:last-child)::after{display:none}
  .steps-grid{padding:0}
  .cta-box h2{font-size:28px}
}
@media(max-width:520px){
  .grid-container{padding:0 16px}
  .site-header{padding:12px 14px}
  .brand-icon{width:32px;height:32px;font-size:15px}
  .brand-name{font-size:16px}
  .side-nav{top:56px;padding:10px 14px 16px}
  .side-nav a{padding:11px 14px}
  .page-hero{padding:48px 0 40px;min-height:auto}
  .page-hero h1{font-size:25px}
  .hero-kicker{font-size:12px;padding:5px 12px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn{justify-content:center}
  .section-header h2{font-size:22px}
  .stats-num{font-size:24px}
  .stats-card{padding:20px 14px}
  .module-thumb{height:150px}
  .module-body{padding:18px 16px 22px}
  .center-all{grid-template-columns:1fr}
  .footer-bottom{font-size:12px}
  .cta-actions{flex-direction:column;align-items:stretch}
}

/* Foundation color override */
a:not([class]){color:var(--primary)}
a:not([class]):hover{color:var(--primary-2)}
.button,.button:focus{outline:none}
.menu,.accordion{border:none}

/* roulang page: category3 */
:root {
    --color-bg: #080d18;
    --color-bg-light: #0f172a;
    --color-bg-card: rgba(19, 26, 43, 0.85);
    --color-primary: #00d4ff;
    --color-secondary: #ff3e7b;
    --color-accent: #00ff9d;
    --color-text: #e8ecf4;
    --color-text-muted: #94a0b8;
    --color-border: rgba(255, 255, 255, 0.08);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-full: 999px;
    --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.5);
    --shadow-primary: 0 0 24px rgba(0, 212, 255, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

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

ul,
ol {
    list-style: none;
}

button,
input,
textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.layout-wrapper {
    display: flex;
    min-height: 100vh;
}

.side-nav-wrap {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    width: 260px;
    height: 100vh;
    padding: 28px 18px 20px;
    background: linear-gradient(180deg, #0d1424 0%, #0a0e1a 100%);
    border-right: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
}

.side-nav-header {
    padding: 0 8px 24px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 20px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: var(--color-text);
}

.site-logo .logo-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--color-primary), #7b5cff);
    border-radius: 10px;
    color: #fff;
    font-size: 1rem;
    box-shadow: var(--shadow-primary);
}

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

.side-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-muted);
    background: transparent;
    border: 1px solid transparent;
    transition: var(--transition);
}

.side-nav a i {
    width: 20px;
    text-align: center;
    font-size: 0.95rem;
}

.side-nav a:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border);
    transform: translateX(4px);
}

.side-nav a.active {
    color: var(--color-text);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(123, 92, 255, 0.1));
    border-color: rgba(0, 212, 255, 0.4);
    font-weight: 700;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.side-nav a.active i {
    color: var(--color-primary);
}

.side-nav-footer {
    padding: 16px 8px 0;
    border-top: 1px solid var(--color-border);
    margin-top: 20px;
}

.side-nav-footer .status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    padding: 8px 0;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 10px var(--color-accent);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

.main-wrapper {
    flex: 1;
    margin-left: 260px;
    min-width: 0;
}

.page-hero {
    position: relative;
    padding: 100px 0 90px;
    background: linear-gradient(135deg, rgba(8, 13, 24, 0.9) 0%, rgba(13, 20, 36, 0.7) 60%, rgba(0, 212, 255, 0.15) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    border-bottom: 1px solid var(--color-border);
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(0, 212, 255, 0.15);
    border: 1px solid rgba(0, 212, 255, 0.35);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 18px;
    letter-spacing: 1px;
}

.hero-title {
    font-size: clamp(2rem, 4.5vw, 3.4rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 18px;
    color: var(--color-text);
    max-width: 640px;
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--color-primary), #7b5cff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    color: var(--color-text-muted);
    line-height: 1.8;
    max-width: 580px;
    margin-bottom: 30px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #7b5cff);
    color: #fff;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(0, 212, 255, 0.45);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text);
    border-color: var(--color-border);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

.btn:focus-visible {
    outline: 3px solid rgba(0, 212, 255, 0.5);
    outline-offset: 2px;
}

.section {
    padding: 90px 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 24px;
    margin-bottom: 44px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.section-title {
    font-size: clamp(1.5rem, 2.5vw, 2.1rem);
    font-weight: 800;
    line-height: 1.3;
    color: var(--color-text);
}

.section-desc {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    max-width: 480px;
}

.section-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
}

.section-link:hover {
    gap: 12px;
    text-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
}

.overview-section {
    background: var(--color-bg-light);
    border-bottom: 1px solid var(--color-border);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.overview-card {
    padding: 32px 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    backdrop-filter: blur(8px);
}

.overview-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow-md);
}

.overview-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(123, 92, 255, 0.2));
    color: var(--color-primary);
    font-size: 1.3rem;
    margin-bottom: 16px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.overview-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-text);
}

.overview-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.cards-section {
    background: var(--color-bg);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

.content-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.content-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 212, 255, 0.3);
}

.card-cover {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.content-card:hover .card-cover img {
    transform: scale(1.05);
}

.card-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    padding: 4px 14px;
    background: rgba(0, 212, 255, 0.9);
    color: #fff;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    backdrop-filter: blur(6px);
}

.card-body {
    padding: 22px 22px 18px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.45;
    margin-bottom: 12px;
    color: var(--color-text);
    transition: var(--transition);
}

.content-card:hover .card-title {
    color: var(--color-primary);
}

.card-excerpt {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 14px;
    border-top: 1px solid var(--color-border);
}

.card-meta-item {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-meta-item i {
    color: var(--color-primary);
    font-size: 0.8rem;
}

.card-read-btn {
    font-size: 0.8rem;
    color: var(--color-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 0;
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.card-read-btn:hover {
    gap: 10px;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.topic-section {
    background: var(--color-bg-light);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.topic-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.topic-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.topic-item:hover {
    border-color: var(--color-primary);
    background: rgba(0, 212, 255, 0.06);
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

.topic-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 10px;
}

.topic-name::before {
    content: '#';
    color: var(--color-primary);
    font-size: 1.1rem;
}

.topic-count {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    background: rgba(255, 255, 255, 0.04);
    padding: 4px 12px;
    border-radius: var(--radius-full);
}

.stats-section {
    background: linear-gradient(135deg, #0b1025 0%, #0d1a30 50%, #0a0e1a 100%);
    border-bottom: 1px solid var(--color-border);
}

.stats-panel {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-item {
    text-align: center;
    padding: 32px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.steps-section {
    background: var(--color-bg);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
}

.step-item {
    position: relative;
    padding: 28px 20px;
    text-align: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.step-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(255, 62, 123, 0.3);
}

.step-num {
    width: 44px;
    height: 44px;
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-secondary), #ff9a3e);
    font-weight: 700;
    font-size: 1.1rem;
    color: #fff;
    box-shadow: 0 4px 14px rgba(255, 62, 123, 0.3);
}

.step-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.step-desc {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.faq-section {
    background: var(--color-bg-light);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.faq-panel {
    max-width: 860px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin-bottom: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

.faq-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-primary);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.faq-answer {
    display: none;
    padding-top: 14px;
    margin-top: 14px;
    border-top: 1px solid var(--color-border);
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

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

.faq-item.open .faq-icon i {
    transform: rotate(45deg);
}

.cta-section {
    padding: 70px 0;
    background: var(--color-bg);
}

.cta-banner {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 52px 48px;
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(123, 92, 255, 0.15)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 212, 255, 0.2);
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(8, 13, 24, 0.7);
    border-radius: var(--radius-lg);
}

.cta-banner > * {
    position: relative;
    z-index: 1;
}

.cta-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 18px;
    background: linear-gradient(135deg, var(--color-primary), #7b5cff);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    box-shadow: var(--shadow-primary);
}

.cta-title {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 800;
    margin-bottom: 14px;
    color: var(--color-text);
}

.cta-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    max-width: 480px;
    margin: 0 auto 28px;
    line-height: 1.8;
}

.cta-btns {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

.site-footer {
    background: #070b14;
    border-top: 1px solid var(--color-border);
    padding: 56px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 14px;
    color: var(--color-text);
}

.footer-brand .logo-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, var(--color-primary), #7b5cff);
    border-radius: 9px;
    color: #fff;
    font-size: 0.9rem;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    max-width: 320px;
}

.footer-col h4 {
    font-size: 0.95rem;
    color: var(--color-text);
    font-weight: 700;
    margin-bottom: 14px;
}

.footer-col a {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    padding: 6px 0;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--color-primary);
    transform: translateX(4px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 22px;
    border-top: 1px solid var(--color-border);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.footer-bottom a {
    color: var(--color-text-muted);
}

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

@media screen and (max-width: 1024px) {
    .side-nav-wrap {
        width: 220px;
        padding: 20px 14px;
    }
    .main-wrapper {
        margin-left: 220px;
    }
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .topic-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-panel {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 768px) {
    .side-nav-wrap {
        position: sticky;
        top: 0;
        width: 100%;
        height: auto;
        flex-direction: row;
        align-items: center;
        padding: 14px 16px;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        gap: 16px;
        background: rgba(13, 20, 36, 0.95);
        backdrop-filter: blur(12px);
    }
    .side-nav-header {
        padding: 0;
        border-bottom: none;
        margin-bottom: 0;
        flex-shrink: 0;
    }
    .site-logo {
        font-size: 1.1rem;
    }
    .site-logo .logo-mark {
        width: 32px;
        height: 32px;
        font-size: 0.85rem;
    }
    .side-nav {
        flex-direction: row;
        overflow-x: auto;
        flex: 1;
        gap: 8px;
        padding: 4px 0;
    }
    .side-nav a {
        padding: 8px 14px;
        gap: 6px;
        font-size: 0.85rem;
        white-space: nowrap;
    }
    .side-nav a:hover {
        transform: translateY(-2px);
    }
    .side-nav a i {
        width: auto;
        font-size: 0.85rem;
    }
    .side-nav-footer {
        display: none;
    }
    .main-wrapper {
        margin-left: 0;
    }
    .page-hero {
        padding: 70px 0 60px;
    }
    .section {
        padding: 60px 0;
    }
    .container {
        padding: 0 20px;
    }
    .overview-grid {
        grid-template-columns: 1fr;
    }
    .cards-grid {
        grid-template-columns: 1fr;
    }
    .topic-grid {
        grid-template-columns: 1fr;
    }
    .stats-panel {
        grid-template-columns: 2fr 1fr;
    }
    .steps-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 6px;
        text-align: center;
    }
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-bottom: 28px;
    }
}

@media screen and (max-width: 480px) {
    .page-hero {
        padding: 50px 0 45px;
    }
    .hero-cta {
        flex-direction: column;
    }
    .btn {
        justify-content: center;
        width: 100%;
    }
    .stats-panel {
        grid-template-columns: 1fr;
    }
    .card-body {
        padding: 18px 16px;
    }
    .footer-bottom {
        font-size: 0.75rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}