/* roulang page: index */
/* ===== Design Variables ===== */
:root {
  --primary: #0c0e1a;
  --primary-light: #141833;
  --secondary: #1a1040;
  --accent: #7c3aed;
  --accent-light: #a78bfa;
  --accent-glow: rgba(124, 58, 237, 0.35);
  --gold: #f59e0b;
  --gold-light: #fcd34d;
  --text: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --card-bg: rgba(255, 255, 255, 0.04);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-hover-border: rgba(124, 58, 237, 0.35);
  --card-radius: 16px;
  --button-radius: 12px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.15);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --container-max: 1200px;
  --nav-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 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);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--primary);
  background-image: radial-gradient(ellipse at 20% 50%, rgba(124,58,237,0.06) 0%, transparent 60%),
                    radial-gradient(ellipse at 80% 20%, rgba(245,158,11,0.04) 0%, transparent 50%);
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--accent-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--gold); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text); }
h1 { font-size: clamp(2.2rem, 6vw, 3.8rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.2rem; }
p { margin-bottom: 1rem; color: var(--text-secondary); }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
@media (min-width: 768px) { .container { padding: 0 var(--spacing-md); } }

/* ===== Header & Navigation ===== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(12, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition);
}
header.scrolled { background: rgba(12, 14, 26, 0.96); }
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
@media (min-width: 768px) { nav { padding: 0 var(--spacing-md); } }
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo i { color: var(--accent); font-size: 1.6rem; }
.logo span { background: linear-gradient(135deg, var(--accent-light), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.logo:hover { color: var(--text); }
.nav-links { display: none; gap: 0.25rem; align-items: center; }
@media (min-width: 768px) { .nav-links { display: flex; } }
.nav-links a {
  padding: 0.5rem 1.2rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  position: relative;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.06); }
.nav-links a.active { color: var(--text); background: rgba(124,58,237,0.15); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-cta {
  display: none;
  align-items: center;
  gap: 0.75rem;
}
@media (min-width: 768px) { .nav-cta { display: flex; } }
.nav-cta a.btn-ghost {
  padding: 0.5rem 1.2rem;
  border-radius: var(--button-radius);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,0.1);
  transition: all var(--transition);
}
.nav-cta a.btn-ghost:hover { color: var(--text); border-color: var(--accent); background: rgba(124,58,237,0.1); }
.nav-cta a.btn-primary {
  padding: 0.55rem 1.5rem;
  border-radius: var(--button-radius);
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #6d28d9);
  box-shadow: 0 4px 16px var(--accent-glow);
  transition: all var(--transition);
}
.nav-cta a.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--accent-glow);
  color: #fff;
}
.mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: none;
  background: rgba(255,255,255,0.06);
  border-radius: 10px;
  color: var(--text);
  font-size: 1.3rem;
  cursor: pointer;
  transition: background var(--transition);
}
@media (min-width: 768px) { .mobile-toggle { display: none; } }
.mobile-toggle:hover { background: rgba(255,255,255,0.12); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(12, 14, 26, 0.98);
  backdrop-filter: blur(24px);
  padding: var(--spacing-md);
  z-index: 999;
  flex-direction: column;
  gap: 0.5rem;
  overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  display: block;
  padding: 1rem 1.2rem;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.mobile-menu a:hover, .mobile-menu a.active { background: rgba(124,58,237,0.12); color: var(--text); }
.mobile-menu .mobile-cta {
  margin-top: var(--spacing-sm);
  padding: 1rem 1.2rem;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #6d28d9);
  text-align: center;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.mobile-menu .mobile-cta:hover { color: #fff; transform: translateY(-2px); }

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(12,14,26,0.88) 0%, rgba(12,14,26,0.6) 50%, rgba(26,16,64,0.7) 100%);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 40%, rgba(124,58,237,0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 60%, rgba(245,158,11,0.06) 0%, transparent 50%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  padding: var(--spacing-xl) var(--spacing-sm);
}
@media (min-width: 768px) { .hero-content { padding: var(--spacing-xl) var(--spacing-md); } }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.2rem;
  border-radius: 100px;
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.25);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-light);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.02em;
}
.hero-badge i { font-size: 0.75rem; }
.hero h1 { margin-bottom: 1.5rem; }
.hero h1 .highlight { background: linear-gradient(135deg, var(--accent-light), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: var(--spacing-md);
}
.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2.2rem;
  border-radius: var(--button-radius);
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #6d28d9);
  box-shadow: 0 8px 32px var(--accent-glow);
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}
.btn-hero-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 48px var(--accent-glow); color: #fff; }
.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2.2rem;
  border-radius: var(--button-radius);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.04);
  transition: all var(--transition);
  cursor: pointer;
}
.btn-hero-secondary:hover { color: var(--text); border-color: var(--accent); background: rgba(124,58,237,0.08); transform: translateY(-2px); }
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem 3rem;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.hero-stat h3 { font-size: 1.8rem; font-weight: 800; background: linear-gradient(135deg, var(--accent-light), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-stat p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }

/* ===== Section Shared ===== */
.section {
  padding: var(--spacing-xl) 0;
}
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--spacing-lg);
}
.section-header h2 { margin-bottom: 0.75rem; }
.section-header p { color: var(--text-muted); font-size: 1.1rem; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 1rem;
  border-radius: 100px;
  background: rgba(124,58,237,0.1);
  border: 1px solid rgba(124,58,237,0.15);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-light);
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}

/* ===== About / Intro Section ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  align-items: center;
}
@media (min-width: 768px) { .intro-grid { grid-template-columns: 1fr 1fr; } }
.intro-image {
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.intro-image img { width: 100%; height: 400px; object-fit: cover; transition: transform 0.6s ease; }
.intro-image:hover img { transform: scale(1.03); }
.intro-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(124,58,237,0.1), transparent);
}
.intro-text h3 { margin-bottom: 1rem; }
.intro-text p { color: var(--text-secondary); margin-bottom: 1.2rem; }
.intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 1.5rem; }
.intro-feature { display: flex; align-items: center; gap: 0.6rem; font-size: 0.95rem; color: var(--text-secondary); }
.intro-feature i { color: var(--accent); font-size: 1rem; width: 20px; text-align: center; }

/* ===== Category Cards ===== */
.category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}
@media (min-width: 520px) { .category-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .category-grid { grid-template-columns: 1fr 1fr 1fr; } }
.category-card {
  position: relative;
  border-radius: var(--card-radius);
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  transition: all var(--transition);
  cursor: pointer;
  display: block;
  color: inherit;
}
.category-card:hover { transform: translateY(-6px); border-color: var(--card-hover-border); box-shadow: var(--shadow-glow); color: inherit; }
.category-card-image {
  height: 200px;
  overflow: hidden;
  position: relative;
}
.category-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.category-card:hover .category-card-image img { transform: scale(1.05); }
.category-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(12,14,26,0.7), transparent);
}
.category-card-body { padding: 1.25rem 1.5rem 1.5rem; }
.category-card-body h3 { font-size: 1.2rem; margin-bottom: 0.4rem; }
.category-card-body p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }
.category-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.8rem;
  border-radius: 100px;
  background: rgba(124,58,237,0.12);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-light);
  margin-top: 0.75rem;
}

/* ===== Latest Posts (CMS) ===== */
.posts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}
@media (min-width: 520px) { .posts-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .posts-grid { grid-template-columns: 1fr 1fr 1fr; } }
.post-card {
  border-radius: var(--card-radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  overflow: hidden;
  transition: all var(--transition);
}
.post-card:hover { transform: translateY(-4px); border-color: var(--card-hover-border); box-shadow: var(--shadow-glow); }
.post-card-image {
  height: 180px;
  overflow: hidden;
  position: relative;
  background: var(--primary-light);
}
.post-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.post-card:hover .post-card-image img { transform: scale(1.04); }
.post-card-image .post-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 0.2rem 0.8rem;
  border-radius: 100px;
  background: rgba(12,14,26,0.7);
  backdrop-filter: blur(8px);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-light);
  border: 1px solid rgba(124,58,237,0.2);
}
.post-card-body { padding: 1.25rem 1.5rem 1.5rem; }
.post-card-body h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.post-card-body h3 a { color: var(--text); transition: color var(--transition); }
.post-card-body h3 a:hover { color: var(--accent-light); }
.post-card-body p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0.75rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-meta { display: flex; align-items: center; gap: 1rem; font-size: 0.8rem; color: var(--text-dim); }
.post-meta i { margin-right: 0.3rem; }
.post-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-muted);
  background: var(--card-bg);
  border-radius: var(--card-radius);
  border: 1px dashed var(--card-border);
}
.post-empty i { font-size: 2rem; margin-bottom: 1rem; color: var(--text-dim); }

/* ===== Stats / Data Section ===== */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
}
@media (min-width: 600px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } }
.stat-item {
  text-align: center;
  padding: 2rem 1rem;
  border-radius: var(--card-radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  transition: all var(--transition);
}
.stat-item:hover { border-color: var(--card-hover-border); box-shadow: var(--shadow-glow); transform: translateY(-4px); }
.stat-item i { font-size: 2rem; color: var(--accent); margin-bottom: 0.75rem; }
.stat-item h3 { font-size: 2rem; font-weight: 800; background: linear-gradient(135deg, var(--accent-light), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-item p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }

/* ===== Features / Services ===== */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}
@media (min-width: 520px) { .features-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .features-grid { grid-template-columns: repeat(4, 1fr); } }
.feature-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--card-radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  transition: all var(--transition);
}
.feature-card:hover { transform: translateY(-6px); border-color: var(--card-hover-border); box-shadow: var(--shadow-glow); }
.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(124,58,237,0.15), rgba(124,58,237,0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.2rem;
  font-size: 1.6rem;
  color: var(--accent);
  border: 1px solid rgba(124,58,237,0.12);
}
.feature-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }

/* ===== FAQ Section ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.faq-item {
  border-radius: var(--card-radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: rgba(124,58,237,0.15); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  gap: 1rem;
  transition: background var(--transition);
}
.faq-question:hover { background: rgba(255,255,255,0.02); }
.faq-question i { color: var(--accent); transition: transform var(--transition); font-size: 0.9rem; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 1.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 1.5rem 1.2rem;
}
.faq-answer p { margin-bottom: 0; }

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, rgba(124,58,237,0.08), rgba(26,16,64,0.3));
  border-top: 1px solid rgba(124,58,237,0.1);
  border-bottom: 1px solid rgba(124,58,237,0.1);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(124,58,237,0.08), transparent 70%);
}
.cta-content {
  position: relative;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  padding: var(--spacing-lg) 0;
}
.cta-content h2 { margin-bottom: 1rem; }
.cta-content p { color: var(--text-muted); margin-bottom: var(--spacing-md); font-size: 1.1rem; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }

/* ===== Footer ===== */
footer {
  padding: var(--spacing-lg) 0 var(--spacing-md);
  border-top: 1px solid rgba(255,255,255,0.04);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}
@media (min-width: 600px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
.footer-brand .logo { margin-bottom: 1rem; }
.footer-brand p { font-size: 0.9rem; color: var(--text-muted); max-width: 320px; }
.footer-social { display: flex; gap: 0.75rem; margin-top: 1.2rem; }
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition);
}
.footer-social a:hover { color: var(--accent); border-color: var(--accent); background: rgba(124,58,237,0.08); transform: translateY(-2px); }
.footer-col h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 1rem; color: var(--text); }
.footer-col a {
  display: block;
  padding: 0.35rem 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: all var(--transition);
}
.footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-bottom {
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255,255,255,0.04);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.footer-bottom a { color: var(--text-dim); }
.footer-bottom a:hover { color: var(--accent-light); }

/* ===== Responsive Tweaks ===== */
@media (max-width: 520px) {
  .hero-stats { gap: 1.5rem; }
  .hero-stat h3 { font-size: 1.4rem; }
  .intro-features { grid-template-columns: 1fr; }
  .stat-item h3 { font-size: 1.6rem; }
  .stat-item { padding: 1.2rem 0.8rem; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (min-width: 768px) and (max-width: 1024px) {
  .category-grid { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: 1fr 1fr; }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --secondary: #e94560;
            --accent: #0f3460;
            --gold: #f5c518;
            --star-light: #f8f9fa;
            --star-muted: #e9ecef;
            --dark-bg: #0b0b1a;
            --card-bg: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #2d3436;
            --text-muted: #636e72;
            --text-light: #b2bec3;
            --border-light: #dfe6e9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.15);
            --transition: 0.25s ease;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --nav-height: 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--star-light);
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #c0392b;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            line-height: 1.3;
            font-weight: 700;
        }

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

        /* ===== 导航 Header ===== */
        #header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(11, 11, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1000;
            transition: background var(--transition);
        }
        #header nav {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        #header .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        #header .logo i {
            color: var(--gold);
            font-size: 1.5rem;
        }
        #header .logo span {
            background: linear-gradient(135deg, #fff, #f5c518);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gold);
            transition: width var(--transition);
        }
        .nav-links a:hover {
            color: #fff;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: #fff;
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .btn-ghost:hover {
            border-color: var(--gold);
            color: var(--gold);
            background: rgba(245, 197, 24, 0.08);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--secondary), #c0392b);
            border-radius: 50px;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(233, 69, 96, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(233, 69, 96, 0.45);
            color: #fff;
        }
        .mobile-toggle {
            display: none;
            background: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 20px;
            }
            .nav-links a {
                font-size: 0.9rem;
            }
            .btn-ghost {
                padding: 6px 16px;
                font-size: 0.85rem;
            }
            .btn-primary {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 820px) {
            .nav-links,
            .nav-cta {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            #header nav {
                position: relative;
            }
            #header.nav-open .nav-links,
            #header.nav-open .nav-cta {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(11, 11, 26, 0.98);
                backdrop-filter: blur(20px);
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            #header.nav-open .nav-links {
                align-items: flex-start;
            }
            #header.nav-open .nav-cta {
                flex-direction: row;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                margin-top: 4px;
            }
            #header.nav-open .nav-links a {
                font-size: 1.05rem;
                padding: 8px 0;
            }
        }
        @media (max-width: 520px) {
            #header nav {
                padding: 0 12px;
            }
            #header .logo span {
                font-size: 1.1rem;
            }
            #header .logo i {
                font-size: 1.2rem;
            }
        }

        /* ===== 页面主体 ===== */
        main {
            padding-top: var(--nav-height);
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: flex-end;
            background: var(--dark-bg);
            overflow: hidden;
        }
        .article-banner .bg-overlay {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .article-banner .bg-gradient {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 11, 26, 0.2) 0%, rgba(11, 11, 26, 0.92) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
            padding-top: 80px;
            padding-bottom: 48px;
            width: 100%;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .article-banner .breadcrumb a:hover {
            color: var(--gold);
        }
        .article-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }
        .article-banner .category-badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            background: rgba(233, 69, 96, 0.2);
            border: 1px solid rgba(233, 69, 96, 0.3);
            color: var(--gold);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .article-banner h1 {
            font-size: 2.6rem;
            color: #fff;
            max-width: 860px;
            line-height: 1.25;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .article-banner .meta {
            display: flex;
            align-items: center;
            gap: 24px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-banner .meta i {
            margin-right: 6px;
            color: var(--gold);
        }
        .article-banner .meta span {
            display: inline-flex;
            align-items: center;
        }

        @media (max-width: 768px) {
            .article-banner {
                min-height: 320px;
            }
            .article-banner .container {
                padding-top: 60px;
                padding-bottom: 32px;
            }
            .article-banner h1 {
                font-size: 1.8rem;
            }
            .article-banner .meta {
                gap: 16px;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 1.4rem;
            }
            .article-banner .meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        /* ===== 文章正文区域 ===== */
        .article-content-section {
            padding: 56px 0 80px;
            background: #fff;
        }
        .article-content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-main {
            min-width: 0;
        }
        .article-main .featured-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-md);
        }
        .article-main .featured-image img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body h2 {
            font-size: 1.6rem;
            margin-top: 40px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--star-muted);
        }
        .article-body h3 {
            font-size: 1.25rem;
            margin-top: 28px;
            margin-bottom: 12px;
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body ul li {
            list-style: disc;
            margin-bottom: 8px;
        }
        .article-body ol li {
            list-style: decimal;
            margin-bottom: 8px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--secondary);
            background: rgba(233, 69, 96, 0.05);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body img {
            margin: 24px 0;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .article-body a {
            color: var(--secondary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: #c0392b;
        }

        .article-not-found {
            padding: 80px 0;
            text-align: center;
        }
        .article-not-found i {
            font-size: 3rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-not-found .btn-primary {
            display: inline-flex;
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--star-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--secondary);
        }
        .sidebar-card .info-item {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.9rem;
        }
        .sidebar-card .info-item:last-child {
            border-bottom: none;
        }
        .sidebar-card .info-item .label {
            color: var(--text-muted);
        }
        .sidebar-card .info-item .value {
            color: var(--text-dark);
            font-weight: 500;
        }
        .sidebar-card .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-card .tag-list a {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            background: #fff;
            border: 1px solid var(--border-light);
            color: var(--text-muted);
            font-size: 0.8rem;
            transition: all var(--transition);
        }
        .sidebar-card .tag-list a:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(233, 69, 96, 0.04);
        }
        .sidebar-cta-card {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            color: #fff;
        }
        .sidebar-cta-card h3 {
            color: #fff;
            font-size: 1.15rem;
            margin-bottom: 12px;
        }
        .sidebar-cta-card p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .sidebar-cta-card .btn-primary {
            background: var(--gold);
            color: var(--dark-bg);
            box-shadow: 0 4px 16px rgba(245, 197, 24, 0.35);
        }
        .sidebar-cta-card .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 197, 24, 0.45);
        }

        @media (max-width: 1024px) {
            .article-content-grid {
                grid-template-columns: 1fr 260px;
                gap: 32px;
            }
        }
        @media (max-width: 820px) {
            .article-content-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .sidebar-cta-card {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .article-main .featured-image img {
                aspect-ratio: 4/3;
            }
            .article-body {
                font-size: 0.98rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 56px 0 72px;
            background: var(--star-light);
        }
        .related-section .section-title {
            font-size: 1.6rem;
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section .section-title i {
            color: var(--secondary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .related-card .card-body {
            padding: 18px 20px 22px;
        }
        .related-card .card-body .cat-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(233, 69, 96, 0.08);
            color: var(--secondary);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h4 a {
            color: var(--text-dark);
            transition: color var(--transition);
        }
        .related-card .card-body h4 a:hover {
            color: var(--secondary);
        }
        .related-card .card-body .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
        }
        .related-card .card-body .meta i {
            margin-right: 4px;
        }

        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-title {
                font-size: 1.3rem;
            }
        }

        /* ===== 页脚 Footer ===== */
        footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        footer .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        footer .logo i {
            color: var(--gold);
        }
        footer .logo span {
            background: linear-gradient(135deg, #fff, #f5c518);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
            margin-bottom: 20px;
        }
        footer .footer-social {
            display: flex;
            gap: 14px;
        }
        footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        footer .footer-social a:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
        }
        footer .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 6px 0;
            transition: color var(--transition);
        }
        footer .footer-col a:hover {
            color: var(--gold);
        }
        footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0 28px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }

        @media (max-width: 820px) {
            footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            footer .footer-brand {
                grid-column: 1 / -1;
            }
            footer .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 通用工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 返回顶部 ===== */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all var(--transition);
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--secondary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        @media (max-width: 520px) {
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
:root {
  --primary: #0d1b2a;
  --primary-light: #1b3a5c;
  --primary-mid: #142c47;
  --accent: #d4a843;
  --accent-light: #e8d5a3;
  --accent-dark: #b8922e;
  --bg-light: #f8f6f2;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --text-dark: #1a1a2e;
  --text-body: #3d3d4a;
  --text-muted: #7a7a8a;
  --text-light: #b0b0c0;
  --border: #e8e4dc;
  --border-light: #f0ece6;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow: 0 8px 32px rgba(0,0,0,0.07);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.10);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-xl: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --container: 1200px;
  --header-h: 76px;
}

/* ===== 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);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-body);
  background: var(--bg-light);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
button { cursor: pointer; background: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--text-dark); font-weight: 700; }
h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; }
p { margin-bottom: 1rem; }
i, em { font-style: normal; }
::selection { background: var(--accent); color: var(--text-dark); }

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 600px) {
  .container { padding: 0 16px; }
}

/* ===== Header / Nav ===== */
#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  background: rgba(13, 27, 42, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  z-index: 1000;
  transition: var(--transition);
}
#header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}
.logo i { color: var(--accent); font-size: 1.2rem; }
.logo span { background: linear-gradient(135deg, #fff 60%, var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  padding: 8px 20px;
  border-radius: 100px;
  font-size: 0.925rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  transition: var(--transition);
  position: relative;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-links a.active { color: #fff; background: rgba(212, 168, 67, 0.18); }
.nav-links a.active::after { content: ''; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--accent); border-radius: 2px; }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-cta .btn-ghost {
  padding: 8px 20px;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  border: 1px solid rgba(255,255,255,0.2);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.nav-cta .btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: rgba(212,168,67,0.08); }
.nav-cta .btn-primary {
  padding: 8px 24px;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--accent);
  color: var(--text-dark);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.nav-cta .btn-primary:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(212,168,67,0.3); }
.mobile-toggle { display: none; font-size: 1.5rem; color: #fff; padding: 8px; border-radius: 8px; }

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .mobile-toggle { display: block; }
  #header nav.mobile-open .nav-links,
  #header nav.mobile-open .nav-cta {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    width: 100%;
    background: rgba(13, 27, 42, 0.98);
    backdrop-filter: blur(20px);
    padding: 20px 24px;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  #header nav.mobile-open .nav-links { align-items: stretch; }
  #header nav.mobile-open .nav-links a { text-align: center; padding: 12px 20px; }
  #header nav.mobile-open .nav-cta { flex-direction: row; justify-content: center; padding-top: 8px; border-top: 1px solid rgba(255,255,255,0.06); }
}

/* ===== Hero ===== */
.hero-category {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  background: var(--primary);
  overflow: hidden;
}
.hero-category .hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.5;
  mix-blend-mode: overlay;
}
.hero-category .hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(13,27,42,0.2) 0%, rgba(13,27,42,0.85) 100%);
}
.hero-category .hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}
.hero-category .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 100px;
  background: rgba(212,168,67,0.15);
  border: 1px solid rgba(212,168,67,0.25);
  color: var(--accent-light);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 0.3px;
}
.hero-category h1 {
  font-size: 3.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.hero-category h1 i { color: var(--accent); }
.hero-category .hero-sub {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.7);
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-category .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.hero-category .hero-actions .btn-primary {
  padding: 14px 36px;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 600;
  background: var(--accent);
  color: var(--text-dark);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}
.hero-category .hero-actions .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(212,168,67,0.3); }
.hero-category .hero-actions .btn-ghost {
  padding: 14px 36px;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}
.hero-category .hero-actions .btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: rgba(212,168,67,0.08); }
.hero-category .hero-meta {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
}
.hero-category .hero-meta span { display: flex; align-items: center; gap: 8px; }
.hero-category .hero-meta i { color: var(--accent); opacity: 0.7; }

@media (max-width: 768px) {
  .hero-category { min-height: 60vh; padding: 100px 16px 60px; }
  .hero-category h1 { font-size: 2.2rem; }
  .hero-category .hero-sub { font-size: 1rem; }
  .hero-category .hero-meta { gap: 16px; flex-direction: column; align-items: center; }
}

/* ===== Section Common ===== */
.section {
  padding: 80px 0;
}
.section-alt { background: var(--bg-white); }
.section-dark {
  background: var(--primary);
  color: rgba(255,255,255,0.85);
}
.section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}
.section-header h2 { margin-bottom: 16px; }
.section-header .subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.section-dark .section-header .subtitle { color: rgba(255,255,255,0.6); }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 16px;
  border-radius: 100px;
  background: rgba(212,168,67,0.12);
  color: var(--accent-dark);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-dark .section-label { background: rgba(212,168,67,0.15); color: var(--accent-light); }

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-header { margin-bottom: 36px; }
  .section-header h2 { font-size: 1.75rem; }
}

/* ===== Intro Block ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.intro-grid .intro-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.intro-grid .intro-image img { width: 100%; height: 420px; object-fit: cover; transition: var(--transition); }
.intro-grid .intro-image:hover img { transform: scale(1.02); }
.intro-grid .intro-text h3 { font-size: 1.75rem; margin-bottom: 20px; }
.intro-grid .intro-text p { color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.intro-grid .intro-text .feature-list { margin-top: 24px; display: grid; gap: 12px; }
.intro-grid .intro-text .feature-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.95rem;
}
.intro-grid .intro-text .feature-list li i { color: var(--accent-dark); width: 20px; text-align: center; }

@media (max-width: 768px) {
  .intro-grid { grid-template-columns: 1fr; gap: 32px; }
  .intro-grid .intro-image img { height: 260px; }
  .intro-grid .intro-text h3 { font-size: 1.4rem; }
}

/* ===== Cards Grid ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.card-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.card-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card-item .card-img { width: 100%; height: 200px; object-fit: cover; display: block; }
.card-item .card-body { padding: 24px; }
.card-item .card-body .card-tag {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 100px;
  background: rgba(212,168,67,0.12);
  color: var(--accent-dark);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.card-item .card-body h4 { font-size: 1.1rem; margin-bottom: 8px; transition: var(--transition); }
.card-item:hover .card-body h4 { color: var(--accent-dark); }
.card-item .card-body p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.card-item .card-body .card-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-light);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.card-item .card-body .card-link:hover { color: var(--accent-dark); gap: 10px; }

@media (max-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .cards-grid { grid-template-columns: 1fr; }
  .card-item .card-img { height: 180px; }
}

/* ===== Data / Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 32px 16px;
  transition: var(--transition);
}
.stat-item:hover { background: rgba(255,255,255,0.07); transform: translateY(-2px); }
.stat-item .stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
  margin-bottom: 8px;
}
.stat-item .stat-label { font-size: 0.95rem; color: rgba(255,255,255,0.6); font-weight: 500; }

@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-item .stat-number { font-size: 2.2rem; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* ===== Timeline / Steps ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  counter-reset: step;
}
.step-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
}
.step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.step-item .step-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
  font-feature-settings: "tnum";
}
.step-item h4 { margin-bottom: 12px; font-size: 1.2rem; }
.step-item p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 0; }
.step-item .step-icon {
  position: absolute;
  top: 28px;
  right: 28px;
  font-size: 1.8rem;
  color: var(--accent);
  opacity: 0.15;
}

@media (max-width: 768px) {
  .steps-grid { grid-template-columns: 1fr; gap: 20px; }
}

/* ===== Location Cards ===== */
.loc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.loc-item {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.loc-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.loc-item .loc-img { width: 100%; height: 200px; object-fit: cover; }
.loc-item .loc-body { padding: 20px 24px; }
.loc-item .loc-body h4 { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.loc-item .loc-body h4 i { color: var(--accent-dark); font-size: 0.9rem; }
.loc-item .loc-body p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 0; }
.loc-item .loc-body .loc-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 12px;
  color: var(--accent-dark);
  font-size: 0.85rem;
  font-weight: 600;
}
.loc-item .loc-body .loc-rating i { color: var(--accent); }

@media (max-width: 1024px) {
  .loc-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .loc-grid { grid-template-columns: 1fr; }
}

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border); }
.faq-item .faq-q {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-dark);
  transition: var(--transition);
  user-select: none;
}
.faq-item .faq-q i { color: var(--accent-dark); transition: var(--transition); font-size: 0.9rem; }
.faq-item.active .faq-q i { transform: rotate(180deg); }
.faq-item .faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.active .faq-a {
  max-height: 300px;
  padding: 0 24px 20px;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--primary);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.08;
  mix-blend-mode: overlay;
}
.cta-section .cta-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}
.cta-section h2 { color: #fff; font-size: 2.5rem; margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.7); font-size: 1.1rem; margin-bottom: 32px; }
.cta-section .btn-primary {
  padding: 16px 40px;
  border-radius: 100px;
  font-size: 1.05rem;
  font-weight: 600;
  background: var(--accent);
  color: var(--text-dark);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}
.cta-section .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(212,168,67,0.25); }
.cta-section .btn-ghost {
  margin-left: 16px;
  padding: 16px 36px;
  border-radius: 100px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}
.cta-section .btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: rgba(212,168,67,0.08); }

@media (max-width: 600px) {
  .cta-section h2 { font-size: 1.75rem; }
  .cta-section .btn-primary, .cta-section .btn-ghost { width: 100%; justify-content: center; margin: 8px 0; }
}

/* ===== Footer ===== */
footer {
  background: #0a0e1a;
  color: rgba(255,255,255,0.7);
  padding: 60px 0 32px;
  border-top: 1px solid rgba(255,255,255,0.04);
}
footer .container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
footer .footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
footer .footer-brand .logo { margin-bottom: 16px; font-size: 1.2rem; }
footer .footer-brand .logo span { background: linear-gradient(135deg, #fff 60%, var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
footer .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); line-height: 1.7; max-width: 360px; }
footer .footer-social { display: flex; gap: 16px; margin-top: 20px; }
footer .footer-social a {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 1.1rem;
  transition: var(--transition);
}
footer .footer-social a:hover { background: var(--accent); color: var(--text-dark); transform: translateY(-2px); }
footer .footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}
footer .footer-col a {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  padding: 6px 0;
  transition: var(--transition);
}
footer .footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
footer .footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.35);
}

@media (max-width: 768px) {
  footer .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  footer .footer-bottom { flex-direction: column; text-align: center; }
}

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