/* roulang page: index */
:root {
  --primary: #00ff88;
  --primary-glow: rgba(0, 255, 136, 0.35);
  --primary-dim: rgba(0, 255, 136, 0.12);
  --secondary: #7000ff;
  --secondary-glow: rgba(112, 0, 255, 0.35);
  --accent: #00ccff;
  --bg-deep: #08080f;
  --bg-dark: #0d0d1a;
  --bg-card: #141428;
  --bg-card-hover: #1c1c38;
  --bg-elevated: #1a1a32;
  --text-white: #f0f0f8;
  --text-primary: #e0e0f0;
  --text-secondary: #9898b8;
  --text-dim: #6a6a8a;
  --border-glow: rgba(0, 255, 136, 0.18);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 255, 136, 0.06);
  --shadow-glow: 0 0 40px rgba(0, 255, 136, 0.15);
  --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  --font-base: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-base);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: #66ffb0; }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
ul, ol { list-style: none; }
::selection { background: var(--primary); color: #000; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: var(--radius-sm); }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ===== HEADER / NAV ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(8, 8, 15, 0.88);
  backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(8, 8, 15, 0.96);
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.6);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo a {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px var(--primary-glow);
  transition: var(--transition);
}
.logo a:hover {
  filter: brightness(1.2);
  -webkit-text-fill-color: transparent;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav a {
  padding: 8px 20px;
  border-radius: 40px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
  letter-spacing: 0.3px;
}
.main-nav a:hover {
  color: var(--text-white);
  background: var(--primary-dim);
}
.main-nav a.active {
  color: var(--primary);
  background: var(--primary-dim);
  box-shadow: 0 0 24px var(--primary-glow);
}
.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  box-shadow: 0 0 12px var(--primary-glow);
}
.nav-cta {
  background: linear-gradient(135deg, var(--primary), #00cc6a) !important;
  color: #000 !important;
  font-weight: 700 !important;
  padding: 10px 28px !important;
  border-radius: 40px !important;
  box-shadow: 0 0 30px var(--primary-glow);
  transition: var(--transition);
}
.nav-cta:hover {
  transform: scale(1.04);
  box-shadow: 0 0 50px var(--primary-glow);
  color: #000 !important;
}
.search-toggle {
  background: transparent;
  color: var(--text-secondary);
  font-size: 1.1rem;
  padding: 8px 12px;
  border-radius: 40px;
  cursor: pointer;
  transition: var(--transition);
}
.search-toggle:hover { color: var(--text-white); background: var(--primary-dim); }
.mobile-toggle {
  display: none;
  background: transparent;
  color: var(--text-white);
  font-size: 1.5rem;
  padding: 6px 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}
.mobile-toggle:hover { background: var(--primary-dim); }

@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(8, 8, 15, 0.98);
    backdrop-filter: blur(24px);
    padding: 20px 24px 28px;
    border-bottom: 1px solid var(--border-glow);
    gap: 6px;
  }
  .main-nav a { padding: 12px 20px; width: 100%; border-radius: 10px; }
  .nav-cta { text-align: center; margin-top: 8px; }
  .search-toggle { display: none; }
  .mobile-toggle { display: block; }
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0 80px;
  overflow: hidden;
  background: var(--bg-deep);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  opacity: 0.3;
  z-index: 0;
  filter: saturate(0.6) brightness(0.5);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(0, 255, 136, 0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(112, 0, 255, 0.08) 0%, transparent 60%),
              linear-gradient(180deg, rgba(8,8,15,0.4) 0%, rgba(8,8,15,0.9) 80%);
  z-index: 1;
}
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-content { max-width: 640px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-dim);
  border: 1px solid var(--border-glow);
  padding: 6px 18px;
  border-radius: 40px;
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero-badge i { font-size: 0.7rem; }
.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  color: var(--text-white);
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 34px;
  background: linear-gradient(135deg, var(--primary), #00cc6a);
  color: #000;
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 0 30px var(--primary-glow);
}
.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 0 60px var(--primary-glow);
  color: #000;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 34px;
  background: transparent;
  color: var(--text-white);
  font-weight: 600;
  font-size: 1rem;
  border-radius: 50px;
  border: 1px solid var(--border-glow);
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}
.btn-secondary:hover {
  background: var(--primary-dim);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}
.hero-visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card), 0 0 80px rgba(0, 255, 136, 0.06);
  width: 100%;
  max-width: 520px;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16/10;
}
.hero-float {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-card);
}
.hero-float .num { font-size: 1.6rem; font-weight: 800; color: var(--primary); }
.hero-float .label { font-size: 0.8rem; color: var(--text-secondary); }

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-content { max-width: 100%; }
  .hero p { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-visual img { max-width: 100%; }
  .hero-float { left: 10px; bottom: -10px; }
}
@media (max-width: 520px) {
  .hero { padding: 100px 0 60px; }
  .hero h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn-primary, .btn-secondary { justify-content: center; }
  .hero-float { display: none; }
}

/* ===== SECTION COMMON ===== */
.section {
  padding: 90px 0;
}
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}
.section-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
}
.section-subtitle {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-dim);
  padding: 4px 16px;
  border-radius: 40px;
  margin-bottom: 16px;
  border: 1px solid var(--border-glow);
}

/* ===== ADVANTAGES ===== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.adv-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.adv-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: var(--transition);
}
.adv-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  background: var(--bg-card-hover);
}
.adv-card:hover::before { opacity: 1; }
.adv-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary);
  margin-bottom: 20px;
  transition: var(--transition);
}
.adv-card:hover .adv-icon {
  background: var(--primary);
  color: #000;
  box-shadow: 0 0 30px var(--primary-glow);
}
.adv-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--text-white); margin-bottom: 10px; }
.adv-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }
@media (max-width: 1024px) {
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .advantages-grid { grid-template-columns: 1fr; }
}

/* ===== HOT EVENTS ===== */
.events-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.event-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
}
.event-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-card);
}
.event-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: var(--transition);
}
.event-card:hover img { transform: scale(1.03); }
.event-body { padding: 24px; }
.event-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-white); margin-bottom: 8px; }
.event-body p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.event-tag {
  display: inline-block;
  padding: 2px 14px;
  border-radius: 40px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--primary-dim);
  color: var(--primary);
  border: 1px solid var(--border-glow);
}
.event-meta { display: flex; align-items: center; gap: 16px; margin-top: 12px; font-size: 0.8rem; color: var(--text-dim); }
@media (max-width: 768px) {
  .events-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .events-grid { grid-template-columns: 1fr; }
}

/* ===== STATS ===== */
.stats-section {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 255, 136, 0.04) 0%, transparent 60%);
  pointer-events: none;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
  position: relative;
  z-index: 1;
}
.stat-item { padding: 20px 0; }
.stat-number {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--text-white);
  letter-spacing: -1px;
  margin-bottom: 4px;
}
.stat-number span { color: var(--primary); }
.stat-label { font-size: 0.9rem; color: var(--text-secondary); }
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stat-number { font-size: 2.2rem; }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* ===== CMS NEWS ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
}
.news-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-card);
  transform: translateY(-3px);
}
.news-thumb {
  width: 120px;
  min-height: 80px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  overflow: hidden;
  flex-shrink: 0;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-info { flex: 1; min-width: 0; }
.news-info h4 { font-size: 0.98rem; font-weight: 700; color: var(--text-white); margin-bottom: 6px; line-height: 1.4; }
.news-info h4 a { color: var(--text-white); }
.news-info h4 a:hover { color: var(--primary); }
.news-info p { font-size: 0.83rem; color: var(--text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-meta { display: flex; align-items: center; gap: 12px; margin-top: 10px; font-size: 0.75rem; color: var(--text-dim); }
.news-meta .cat { color: var(--primary); font-weight: 600; }
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 20px;
  color: var(--text-secondary);
  font-size: 1rem;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-subtle);
}
@media (max-width: 768px) {
  .news-grid { grid-template-columns: 1fr; }
  .news-card { flex-direction: column; }
  .news-thumb { width: 100%; aspect-ratio: 16/9; }
}

/* ===== PROCESS ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.process-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
  opacity: 0.3;
  z-index: 0;
}
.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
  background: var(--bg-dark);
  padding: 24px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
}
.process-step:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-card);
}
.step-num {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #00cc6a);
  color: #000;
  font-weight: 800;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 0 30px var(--primary-glow);
}
.process-step h4 { font-size: 1rem; font-weight: 700; color: var(--text-white); margin-bottom: 6px; }
.process-step p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }
@media (max-width: 768px) {
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .process-grid::before { display: none; }
}
@media (max-width: 520px) {
  .process-grid { grid-template-columns: 1fr; }
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-glow); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-white);
  font-size: 0.98rem;
  transition: var(--transition);
  user-select: none;
  gap: 16px;
}
.faq-question i {
  font-size: 0.85rem;
  color: var(--primary);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  transition: max-height 0.4s ease, padding 0.3s ease;
  overflow: hidden;
}
.faq-item.open .faq-answer {
  max-height: 400px;
  padding: 0 24px 20px;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  overflow: hidden;
}
.cta-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  opacity: 0.15;
  z-index: 0;
  filter: brightness(0.3) saturate(0.5);
}
.cta-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8,8,15,0.9) 0%, rgba(8,8,15,0.7) 100%);
}
.cta-box {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 80px 40px;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow-card), 0 0 80px rgba(0, 255, 136, 0.04);
}
.cta-box h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 16px;
}
.cta-box p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.cta-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }

/* ===== FOOTER ===== */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo a { font-size: 1.3rem; }
.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.8;
  margin-top: 16px;
  max-width: 320px;
}
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1rem;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--primary-dim);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-3px);
}
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: var(--transition);
}
.footer-col ul a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-dim);
}
.footer-bottom a { color: var(--text-dim); }
.footer-bottom a:hover { color: var(--primary); }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== MISC ===== */
.section-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  margin: 0 auto 20px;
  box-shadow: 0 0 20px var(--primary-glow);
}
.glow-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.15;
  margin: 0;
}
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 0 30px var(--primary-glow);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  z-index: 999;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { transform: translateY(-4px) scale(1.05); box-shadow: 0 0 50px var(--primary-glow); }

@media (max-width: 520px) {
  .section { padding: 60px 0; }
  .section-header { margin-bottom: 36px; }
}

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --clr-bg: #0a0a1a;
            --clr-bg-alt: #12122a;
            --clr-bg-card: #1a1a3a;
            --clr-bg-card-hover: #22224a;
            --clr-neon-blue: #00d4ff;
            --clr-neon-purple: #a855f7;
            --clr-neon-orange: #ff6b35;
            --clr-neon-pink: #ff2d95;
            --clr-neon-green: #22d3a0;
            --clr-text-primary: #f1f5f9;
            --clr-text-secondary: #94a3b8;
            --clr-text-muted: #64748b;
            --clr-border: rgba(0, 212, 255, 0.15);
            --clr-border-active: rgba(0, 212, 255, 0.5);
            --clr-glow-blue: 0 0 20px rgba(0, 212, 255, 0.15);
            --clr-glow-purple: 0 0 20px rgba(168, 85, 247, 0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-hover: 0 12px 48px rgba(0, 212, 255, 0.08);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            background: var(--clr-bg);
            color: var(--clr-text-primary);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
        }
        a {
            color: var(--clr-neon-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #66e5ff;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 10, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--clr-border);
            height: var(--header-h);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(10, 10, 26, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
        }
        .logo a {
            color: var(--clr-text-primary);
            background: linear-gradient(135deg, var(--clr-neon-blue), var(--clr-neon-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            position: relative;
        }
        .logo a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--clr-neon-blue), var(--clr-neon-purple));
            border-radius: 2px;
            opacity: 0.6;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            color: var(--clr-text-secondary);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            text-decoration: none;
        }
        .main-nav a:hover {
            color: var(--clr-text-primary);
            background: rgba(0, 212, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--clr-neon-blue);
            background: rgba(0, 212, 255, 0.08);
            box-shadow: inset 0 -2px 0 var(--clr-neon-blue), var(--clr-glow-blue);
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--clr-neon-blue), var(--clr-neon-purple));
            color: #fff;
            padding: 8px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
            margin-left: 8px;
        }
        .main-nav a.nav-cta:hover {
            box-shadow: 0 6px 30px rgba(0, 212, 255, 0.35);
            transform: translateY(-1px);
            color: #fff;
            background: linear-gradient(135deg, #00e5ff, #b366ff);
        }
        .main-nav a.nav-cta i {
            margin-right: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--clr-text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(10, 10, 26, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--clr-border);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .main-nav a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
            }
        }

        /* ===== Article Hero ===== */
        .article-hero {
            margin-top: var(--header-h);
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: flex-end;
            padding: 60px 0 48px;
            background: linear-gradient(135deg, #0a0a2a, #1a0a3a);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 10, 26, 1) 0%, rgba(10, 10, 26, 0.6) 50%, rgba(10, 10, 26, 0.3) 100%);
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .article-hero .article-category {
            display: inline-block;
            background: linear-gradient(135deg, var(--clr-neon-purple), var(--clr-neon-pink));
            color: #fff;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            text-transform: uppercase;
            margin-bottom: 16px;
            box-shadow: 0 0 24px rgba(168, 85, 247, 0.2);
        }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            max-width: 900px;
            color: #fff;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }
        .article-hero .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 32px;
            margin-top: 20px;
            color: var(--clr-text-secondary);
            font-size: 0.9rem;
        }
        .article-hero .article-meta i {
            color: var(--clr-neon-blue);
            margin-right: 6px;
            opacity: 0.8;
        }
        .article-hero .article-meta span {
            display: inline-flex;
            align-items: center;
        }
        @media (max-width: 768px) {
            .article-hero {
                min-height: 280px;
                padding: 40px 0 32px;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .article-hero .article-meta {
                gap: 12px 20px;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-hero {
                min-height: 220px;
                padding: 32px 0 24px;
            }
        }

        /* ===== Article Main Content ===== */
        .article-content-section {
            padding: 48px 0 64px;
            position: relative;
        }
        .article-content-section .container {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: rgba(26, 26, 58, 0.6);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-card);
        }
        .article-body h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--clr-neon-blue);
            margin: 40px 0 16px;
            letter-spacing: -0.01em;
            border-left: 4px solid var(--clr-neon-blue);
            padding-left: 16px;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--clr-text-primary);
            margin: 32px 0 12px;
        }
        .article-body p {
            margin: 0 0 20px;
            color: rgba(241, 245, 249, 0.88);
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px;
            padding-left: 24px;
            color: rgba(241, 245, 249, 0.88);
        }
        .article-body ul {
            list-style: disc;
        }
        .article-body ol {
            list-style: decimal;
        }
        .article-body li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .article-body blockquote {
            border-left: 4px solid var(--clr-neon-purple);
            background: rgba(168, 85, 247, 0.06);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: rgba(241, 245, 249, 0.8);
            font-style: italic;
        }
        .article-body a {
            color: var(--clr-neon-blue);
            border-bottom: 1px dotted rgba(0, 212, 255, 0.3);
        }
        .article-body a:hover {
            border-bottom-color: var(--clr-neon-blue);
        }
        .article-body .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-body .article-not-found h2 {
            font-size: 2rem;
            color: var(--clr-neon-orange);
            border-left: none;
            padding-left: 0;
            margin-top: 0;
        }
        .article-body .article-not-found p {
            color: var(--clr-text-secondary);
            margin: 16px 0 24px;
            font-size: 1.1rem;
        }
        .article-body .article-not-found .btn {
            display: inline-block;
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
            position: sticky;
            top: calc(var(--header-h) + 24px);
        }
        .sidebar-card {
            background: rgba(26, 26, 58, 0.5);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .sidebar-card:hover {
            border-color: var(--clr-border-active);
            box-shadow: var(--shadow-hover);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--clr-neon-blue);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--clr-border);
        }
        .sidebar-card ul li {
            margin-bottom: 10px;
        }
        .sidebar-card ul li a {
            color: var(--clr-text-secondary);
            font-size: 0.9rem;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            transition: var(--transition);
        }
        .sidebar-card ul li a:hover {
            color: var(--clr-neon-blue);
            transform: translateX(4px);
        }
        .sidebar-card ul li a i {
            color: var(--clr-neon-purple);
            font-size: 0.7rem;
            margin-top: 5px;
            flex-shrink: 0;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(168, 85, 247, 0.08));
            border-color: rgba(0, 212, 255, 0.2);
            text-align: center;
            padding: 32px 24px;
        }
        .sidebar-cta h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--clr-text-primary);
            margin-bottom: 8px;
        }
        .sidebar-cta p {
            color: var(--clr-text-secondary);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .sidebar-cta .btn {
            width: 100%;
        }
        @media (max-width: 1024px) {
            .article-content-section .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 640px) {
            .article-body {
                padding: 24px 20px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body p {
                font-size: 0.95rem;
            }
        }

        /* ===== Related Articles ===== */
        .related-articles {
            padding: 48px 0 64px;
            background: var(--clr-bg-alt);
            border-top: 1px solid var(--clr-border);
            border-bottom: 1px solid var(--clr-border);
        }
        .related-articles .section-title {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--clr-text-primary);
            margin-bottom: 8px;
        }
        .related-articles .section-sub {
            text-align: center;
            color: var(--clr-text-secondary);
            margin-bottom: 40px;
            font-size: 1.05rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: rgba(26, 26, 58, 0.5);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: var(--clr-border-active);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            height: 180px;
            background: var(--clr-bg-card);
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--clr-text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card .card-body h4 a {
            color: inherit;
        }
        .related-card .card-body h4 a:hover {
            color: var(--clr-neon-blue);
        }
        .related-card .card-body p {
            color: var(--clr-text-secondary);
            font-size: 0.88rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .card-meta {
            color: var(--clr-text-muted);
            font-size: 0.8rem;
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .related-card .card-body .card-meta i {
            margin-right: 4px;
            color: var(--clr-neon-blue);
            opacity: 0.6;
        }
        @media (max-width: 900px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-articles .section-title {
                font-size: 1.4rem;
            }
        }

        /* ===== CTA Section ===== */
        .article-cta {
            padding: 64px 0 72px;
            position: relative;
            background: linear-gradient(135deg, #0a0a2a, #1a0a3a);
            overflow: hidden;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }
        .article-cta .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .article-cta h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .article-cta p {
            color: var(--clr-text-secondary);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .article-cta .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        @media (max-width: 520px) {
            .article-cta {
                padding: 40px 0 48px;
            }
            .article-cta h2 {
                font-size: 1.5rem;
            }
            .article-cta p {
                font-size: 0.95rem;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.3;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--clr-neon-blue), var(--clr-neon-purple));
            color: #fff;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
        }
        .btn-primary:hover {
            box-shadow: 0 6px 30px rgba(0, 212, 255, 0.35);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-secondary {
            background: transparent;
            color: var(--clr-neon-blue);
            border: 1px solid var(--clr-neon-blue);
        }
        .btn-secondary:hover {
            background: rgba(0, 212, 255, 0.1);
            color: var(--clr-neon-blue);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #06061a;
            border-top: 1px solid var(--clr-border);
            padding: 56px 0 24px;
            color: var(--clr-text-secondary);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .site-footer .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 12px;
            display: block;
        }
        .site-footer .footer-brand .logo a::after {
            display: none;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--clr-text-muted);
            max-width: 360px;
            margin-bottom: 16px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .site-footer .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--clr-text-secondary);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .site-footer .footer-social a:hover {
            background: rgba(0, 212, 255, 0.1);
            color: var(--clr-neon-blue);
            border-color: var(--clr-border-active);
            transform: translateY(-3px);
        }
        .site-footer .footer-col h4 {
            color: var(--clr-text-primary);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: var(--clr-text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--clr-neon-blue);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--clr-text-muted);
        }
        .site-footer .footer-bottom a {
            color: var(--clr-text-muted);
            transition: var(--transition);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--clr-neon-blue);
        }
        @media (max-width: 900px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 560px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Tag Badge ===== */
        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(0, 212, 255, 0.1);
            color: var(--clr-neon-blue);
            border: 1px solid rgba(0, 212, 255, 0.15);
        }
        .tag-purple {
            background: rgba(168, 85, 247, 0.1);
            color: var(--clr-neon-purple);
            border-color: rgba(168, 85, 247, 0.15);
        }
        .tag-orange {
            background: rgba(255, 107, 53, 0.1);
            color: var(--clr-neon-orange);
            border-color: rgba(255, 107, 53, 0.15);
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--clr-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--clr-bg-card);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--clr-bg-card-hover);
        }

        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--clr-neon-blue);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Selection ===== */
        ::selection {
            background: rgba(0, 212, 255, 0.25);
            color: #fff;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #00f0ff;
            --primary-dim: rgba(0, 240, 255, 0.08);
            --primary-glow: rgba(0, 240, 255, 0.35);
            --accent: #8b5cf6;
            --accent-glow: rgba(139, 92, 246, 0.35);
            --bg-deep: #0a0e1a;
            --bg-card: #111827;
            --bg-surface: #1a1f2e;
            --bg-nav: rgba(10, 14, 26, 0.92);
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-dim: rgba(255, 255, 255, 0.06);
            --border-glow: rgba(0, 240, 255, 0.25);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 40px rgba(0, 240, 255, 0.08);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container: 1200px;
        }

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

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

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #fff;
        }

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

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

        ul {
            list-style: none;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-nav);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-dim);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
            transition: var(--transition);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px var(--primary-glow);
        }
        .logo a {
            background: none;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }
        .logo a:hover {
            opacity: 0.85;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: var(--text-primary);
            background: var(--primary-dim);
        }
        .main-nav a.active {
            color: var(--primary);
            background: var(--primary-dim);
            box-shadow: inset 0 -2px 0 var(--primary), 0 0 20px var(--primary-glow);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--primary-glow);
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.25);
            transition: var(--transition);
        }
        .main-nav a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 240, 255, 0.4);
            color: #fff;
        }
        .main-nav a.nav-cta i {
            margin-right: 6px;
        }

        .nav-toggle {
            display: none;
            background: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-xs);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-dim);
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 140px 24px 80px;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            isolation: isolate;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 26, 0.85) 0%, rgba(10, 14, 26, 0.60) 50%, rgba(10, 14, 26, 0.92) 100%);
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 40%, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 860px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: var(--primary-dim);
            border: 1px solid var(--border-glow);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 40%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 4px 30px rgba(0, 240, 255, 0.3);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(0, 240, 255, 0.45);
            color: #fff;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1.05rem;
            border: 1px solid var(--border-glow);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: var(--primary-dim);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
        }

        /* ===== 通用板块标题 ===== */
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            font-size: clamp(1.8rem, 3.6vw, 2.8rem);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.25;
            margin-bottom: 14px;
        }
        .section-header h2 span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 16px auto 0;
            box-shadow: 0 0 20px var(--primary-glow);
        }

        /* ===== 赛事分类卡片 ===== */
        .section-sports {
            padding: 100px 0 80px;
            background: var(--bg-deep);
            position: relative;
        }
        .section-sports::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
        }
        .sports-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }
        .sport-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 24px 28px;
            text-align: center;
            border: 1px solid var(--border-dim);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .sport-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .sport-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }
        .sport-card:hover::before {
            opacity: 1;
        }
        .sport-icon {
            font-size: 2.8rem;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .sport-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .sport-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .sport-tag {
            display: inline-block;
            margin-top: 14px;
            padding: 4px 14px;
            border-radius: 50px;
            background: var(--primary-dim);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
        }

        /* ===== 投注指南流程 ===== */
        .section-guide {
            padding: 100px 0;
            background: var(--bg-card);
            position: relative;
        }
        .section-guide::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
        }
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            counter-reset: step;
        }
        .guide-step {
            background: var(--bg-deep);
            border-radius: var(--radius);
            padding: 32px 24px;
            border: 1px solid var(--border-dim);
            transition: var(--transition);
            position: relative;
            text-align: center;
        }
        .guide-step:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .guide-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 18px;
            box-shadow: 0 0 30px var(--primary-glow);
        }
        .guide-step h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .guide-step p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 平台优势 ===== */
        .section-advantages {
            padding: 100px 0;
            background: var(--bg-deep);
            position: relative;
        }
        .section-advantages::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
        }
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .advantage-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            border: 1px solid var(--border-dim);
            transition: var(--transition);
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }
        .advantage-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .advantage-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--primary-dim);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .advantage-card:hover .advantage-icon {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 0 30px var(--primary-glow);
        }
        .advantage-text h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .advantage-text p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 热门赛事推荐 ===== */
        .section-events {
            padding: 100px 0;
            background: var(--bg-card);
            position: relative;
        }
        .section-events::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
        }
        .events-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .event-card {
            background: var(--bg-deep);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-dim);
            transition: var(--transition);
        }
        .event-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }
        .event-card .event-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .event-card .event-img .event-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(10, 14, 26, 0.8) 0%, transparent 60%);
        }
        .event-card .event-img .event-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.2);
            backdrop-filter: blur(8px);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            border: 1px solid var(--border-glow);
        }
        .event-card .event-body {
            padding: 20px 20px 24px;
        }
        .event-card .event-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .event-card .event-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .event-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .event-meta .event-odds {
            color: var(--primary);
            font-weight: 700;
            font-size: 0.95rem;
        }

        /* ===== FAQ ===== */
        .section-faq {
            padding: 100px 0;
            background: var(--bg-deep);
            position: relative;
        }
        .section-faq::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-dim);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
            border: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .section-cta {
            padding: 80px 0;
            background: var(--bg-card);
            position: relative;
            text-align: center;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
        }
        .cta-content {
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: clamp(1.8rem, 3.2vw, 2.6rem);
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .cta-content h2 span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .cta-content p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-dim);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-dim);
        }
        .footer-brand .logo {
            font-size: 1.5rem;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 18px;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-deep);
            color: var(--text-secondary);
            font-size: 1.1rem;
            border: 1px solid var(--border-dim);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-color: transparent;
            transform: translateY(-3px);
            box-shadow: 0 0 25px var(--primary-glow);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-primary);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        .footer-bottom span+span a {
            margin: 0 4px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-nav);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border-dim);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-xs);
            }
            .main-nav a.active {
                box-shadow: inset 2px 0 0 var(--primary), 0 0 20px var(--primary-glow);
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.nav-cta {
                text-align: center;
                margin-top: 8px;
            }

            .hero h1 {
                font-size: clamp(2rem, 8vw, 2.8rem);
            }
            .hero p {
                font-size: 1rem;
            }

            .sports-grid {
                grid-template-columns: 1fr 1fr;
            }
            .guide-steps {
                grid-template-columns: 1fr 1fr;
            }
            .advantages-grid {
                grid-template-columns: 1fr;
            }
            .events-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .sports-grid {
                grid-template-columns: 1fr;
            }
            .guide-steps {
                grid-template-columns: 1fr;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn-primary,
            .cta-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .container {
                padding: 0 16px;
            }
            .section-sports,
            .section-guide,
            .section-advantages,
            .section-events,
            .section-faq,
            .section-cta {
                padding: 60px 0;
            }
            .advantage-card {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

        /* ===== 辅助类 ===== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }