/* roulang page: index */
:root {
  --primary: #7B1E3A;
  --primary-dark: #5C162B;
  --accent: #D4A32F;
  --accent-light: #F0C75E;
  --bg: #1A1418;
  --surface: #241A20;
  --surface-light: #2E2229;
  --text: #F5EFE6;
  --text-muted: #B8A8A0;
  --border: #3D2B30;
  --border-gold: rgba(212, 163, 47, 0.35);
  --gradient: linear-gradient(135deg, #7B1E3A 0%, #D4A32F 100%);
  --gradient-btn: linear-gradient(135deg, #7B1E3A, #D4A32F);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 6px 24px rgba(0,0,0,0.4);
  --shadow-gold: 0 4px 20px rgba(212,163,47,0.25);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --max-width: 1200px;
  --sidebar-width: 280px;
  --header-height: 64px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 56px;
  --spacing-2xl: 72px;
  --transition: all 0.25s ease-in-out;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--font);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--accent-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-md); }

/* ========== HEADER / NAV ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(26, 20, 24, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}
.site-header .container { display: flex; align-items: center; width: 100%; gap: var(--spacing-md); }
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  white-space: nowrap;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.logo .logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  font-weight: 900;
  flex-shrink: 0;
}
.logo:hover { color: var(--accent-light); }
.header-search {
  flex: 1;
  max-width: 360px;
  margin-left: auto;
  position: relative;
}
.header-search input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.875rem;
  transition: var(--transition);
}
.header-search input::placeholder { color: var(--text-muted); }
.header-search input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,163,47,0.15);
}
.header-search .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  font-size: 0.9rem;
}
.header-controls { display: flex; align-items: center; gap: var(--spacing-xs); flex-shrink: 0; }
.header-controls select {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: var(--transition);
  max-width: 110px;
}
.header-controls select:hover { border-color: var(--accent); }
.header-controls select:focus { outline: none; border-color: var(--accent); }
.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ========== SIDEBAR (documentation tree) ========== */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: var(--spacing-md) var(--spacing-sm);
  z-index: 900;
  transition: transform 0.3s ease-in-out;
}
.sidebar-nav .side-item { margin-bottom: 4px; }
.sidebar-nav .side-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
}
.sidebar-nav .side-link:hover {
  color: var(--text);
  background: var(--surface);
}
.sidebar-nav .side-link.active {
  color: var(--accent-light);
  background: var(--surface);
  border-left: 3px solid var(--accent);
  padding-left: 11px;
}
.sidebar-nav .side-link .arrow {
  font-size: 0.7rem;
  transition: transform 0.3s ease;
  color: var(--text-muted);
}
.sidebar-nav .side-link.expanded .arrow { transform: rotate(90deg); }
.sidebar-nav .sub-items {
  margin-left: 20px;
  display: none;
}
.sidebar-nav .sub-items.open { display: block; }
.sidebar-nav .sub-link {
  display: block;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.8125rem;
  transition: var(--transition);
}
.sidebar-nav .sub-link:hover { color: var(--accent-light); background: rgba(212,163,47,0.06); }
.sidebar-nav .sub-link.active { color: var(--accent-light); }

/* ========== MAIN CONTENT ========== */
.main-content {
  margin-left: var(--sidebar-width);
  padding-top: var(--header-height);
  min-height: 100vh;
}
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 850;
  transition: opacity 0.3s ease;
}
.overlay.visible { display: block; }

/* ========== SECTIONS ========== */
.section { padding: var(--spacing-xl) 0; position: relative; }
.section-alt { background: var(--surface); }
.section-heading {
  max-width: 680px;
  margin-bottom: var(--spacing-lg);
}
.section-heading h2 {
  font-size: 1.875rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: var(--spacing-sm);
}
.section-heading p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.section-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 20px;
  background: rgba(212,163,47,0.12);
  border: 1px solid var(--border-gold);
  color: var(--accent-light);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.04em;
}

/* ========== HERO ========== */
.hero {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  position: relative;
  background-image: url('/assets/images/525ba7beeae0f1e2.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: var(--spacing-2xl) 0;
  margin-top: 0;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,20,24,0.92) 30%, rgba(91,22,43,0.72) 60%, rgba(212,163,47,0.2) 100%);
}
.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--spacing-xl);
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 20px;
  background: rgba(212,163,47,0.1);
  border: 1px solid var(--border-gold);
  color: var(--accent-light);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}
.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-light);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}
.hero h1 {
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.01em;
}
.hero h1 .highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.hero-description {
  font-size: 1.0625rem;
  color: rgba(245,239,230,0.85);
  line-height: 1.75;
  max-width: 620px;
  margin-bottom: var(--spacing-lg);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}
.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-stat .stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-light);
}
.hero-stat .stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.hero-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow);
}
.hero-panel .panel-heading {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-panel .panel-heading .icon {
  font-size: 1.3rem;
}
.countdown {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}
.countdown .count-block {
  flex: 1;
  min-width: 60px;
  text-align: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 8px;
}
.countdown .count-block .num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-light);
  display: block;
}
.countdown .count-block .unit {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.notify-form {
  display: flex;
  gap: var(--spacing-xs);
}
.notify-form input {
  flex: 1;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.875rem;
}
.notify-form input::placeholder { color: var(--text-muted); }
.notify-form input:focus { outline: none; border-color: var(--accent); }

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: var(--transition);
  text-align: center;
  letter-spacing: 0.01em;
}
.btn-primary {
  background: var(--gradient-btn);
  color: #fff;
  border: none;
  box-shadow: 0 4px 16px rgba(212,163,47,0.3);
}
.btn-primary:hover {
  color: #fff;
  filter: brightness(1.15);
  box-shadow: 0 6px 24px rgba(212,163,47,0.45);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--accent-light);
  border: 1px solid var(--border-gold);
}
.btn-outline:hover {
  background: rgba(212,163,47,0.1);
  border-color: var(--accent);
  color: var(--accent-light);
  transform: translateY(-1px);
}
.btn-sm {
  padding: 8px 18px;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}
.btn-lg {
  padding: 16px 36px;
  font-size: 1.0625rem;
}

/* ========== CARDS & GRIDS ========== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
.card .card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--spacing-xs);
}
.card .card-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
}
.card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-light);
  margin-top: var(--spacing-sm);
}
.card .card-link:hover { color: var(--accent); gap: 10px; }
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-gold {
  background: rgba(212,163,47,0.15);
  border: 1px solid var(--border-gold);
  color: var(--accent-light);
}
.badge-red {
  background: rgba(123,30,58,0.2);
  border: 1px solid rgba(123,30,58,0.4);
  color: #e8a0b5;
}
.badge-plain {
  background: var(--surface-light);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

/* ========== LISTS ========== */
.info-list { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.info-list .info-item {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.info-list .info-item:hover { border-color: var(--accent); }
.info-list .info-item .item-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.info-list .info-item .item-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* ========== TIMELINE ========== */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding-left: 28px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}
.timeline-item {
  position: relative;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.timeline-item:hover { border-color: var(--accent); }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(212,163,47,0.5);
}
.timeline-item .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  margin-bottom: var(--spacing-xs);
}
.timeline-item h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.timeline-item p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ========== STAT BANNER ========== */
.stat-banner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.stat-banner .stat-item {
  text-align: center;
  flex: 1;
  min-width: 120px;
}
.stat-banner .stat-item .stat-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent-light);
  display: block;
  line-height: 1.2;
}
.stat-banner .stat-item .stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ========== TESTIMONIAL CARDS ========== */
.testimonial-card {
  padding: var(--spacing-lg);
  background: var(--surface);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.testimonial-card .quote-mark {
  font-size: 2.5rem;
  color: var(--accent);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}
.testimonial-card .quote-text {
  font-size: 0.9375rem;
  color: var(--text);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: var(--spacing-md);
}
.testimonial-card .quote-author {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-light);
}

/* ========== CMS CONTENT AREA ========== */
.cms-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
}
.cms-list { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.cms-list .cms-item {
  display: block;
  padding: var(--spacing-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.cms-list .cms-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-gold);
}
.cms-list .cms-item .cms-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.4;
}
.cms-list .cms-item .cms-excerpt {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.6;
}
.cms-list .cms-item .cms-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.75rem;
  color: var(--text-muted);
}
.cms-list .cms-item .cms-meta .cms-tag {
  padding: 2px 8px;
  background: rgba(212,163,47,0.12);
  border-radius: var(--radius-sm);
  color: var(--accent-light);
  font-weight: 600;
}
.cms-empty {
  padding: var(--spacing-lg);
  text-align: center;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
}
.cms-side-list { display: flex; flex-direction: column; gap: var(--spacing-xs); }
.cms-side-list .cms-side-item {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--surface-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.cms-side-list .cms-side-item:hover { border-color: var(--accent); }
.cms-side-list .cms-side-item .side-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}
.cms-side-list .cms-side-item .side-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ========== HORIZONTAL SCROLL CARDS ========== */
.hscroll {
  display: flex;
  gap: var(--spacing-md);
  overflow-x: auto;
  padding-bottom: var(--spacing-sm);
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}
.hscroll::-webkit-scrollbar { height: 4px; }
.hscroll::-webkit-scrollbar-track { background: var(--surface); border-radius: 4px; }
.hscroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.hscroll::-webkit-scrollbar-thumb:hover { background: var(--accent); }
.hscroll .hscroll-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.hscroll .hscroll-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
.hscroll .hscroll-card .hscroll-img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}
.hscroll .hscroll-card .hscroll-body {
  padding: var(--spacing-md);
}
.hscroll .hscroll-card .hscroll-body .hscroll-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.4;
}
.hscroll .hscroll-card .hscroll-body .hscroll-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========== FAQ ========== */
.faq-list { display: flex; flex-direction: column; gap: var(--spacing-sm); max-width: 760px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--accent); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover { color: var(--accent-light); }
.faq-question .faq-arrow {
  font-size: 0.8rem;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 var(--spacing-lg);
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 var(--spacing-lg) var(--spacing-md);
}
.faq-answer p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.75;
  padding-top: var(--spacing-xs);
  border-top: 1px solid var(--border);
}

/* ========== RESOURCE DIRECTORY ========== */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--spacing-sm);
}
.resource-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.resource-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-gold);
}
.resource-item .resource-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
}
.resource-item .resource-info .resource-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}
.resource-item .resource-info .resource-count {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ========== CTA SECTION ========== */
.cta-section {
  background: var(--primary-dark);
  background-image: linear-gradient(135deg, rgba(123,30,58,0.9) 0%, rgba(26,20,24,0.95) 50%, rgba(212,163,47,0.3) 100%);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  position: relative;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
}
.cta-section p {
  font-size: 1rem;
  color: rgba(245,239,230,0.8);
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.7;
}
.cta-section .btn { margin: 0 auto; }

/* ========== FOOTER ========== */
.site-footer {
  background: #120E12;
  border-top: 1px solid var(--border);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}
.footer-brand .logo { margin-bottom: var(--spacing-sm); }
.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 300px;
}
.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--spacing-sm);
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--accent-light); }
.footer-subscribe {
  display: flex;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}
.footer-subscribe input {
  flex: 1;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.8125rem;
}
.footer-subscribe input:focus { outline: none; border-color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: var(--spacing-md);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent-light); }

/* ========== RESPONSIVE ========== */
@media (max-width: 1200px) {
  .container { padding: 0 var(--spacing-md); }
  .hero .container { grid-template-columns: 1fr; gap: var(--spacing-lg); }
  .hero-panel { max-width: 480px; }
}
@media (max-width: 992px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .cms-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .hamburger { display: flex; }
  .header-search { max-width: 200px; }
  .header-controls select { max-width: 80px; font-size: 0.75rem; }
  .hero h1 { font-size: 2rem; }
}
@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding: var(--spacing-xl) 0; }
  .hero h1 { font-size: 1.75rem; }
  .hero-description { font-size: 0.9375rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-panel { padding: var(--spacing-md); }
  .countdown .count-block { min-width: 50px; padding: 8px 4px; }
  .countdown .count-block .num { font-size: 1.2rem; }
  .section { padding: var(--spacing-lg) 0; }
  .section-heading h2 { font-size: 1.5rem; }
  .stat-banner { gap: var(--spacing-md); }
  .stat-banner .stat-item .stat-num { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
  .hscroll-card { flex: 0 0 240px; }
  .resource-grid { grid-template-columns: 1fr; }
  .notify-form { flex-direction: column; }
  .header-search { display: none; }
  .header-search.mobile-visible { display: block; }
  .header-controls select { padding: 6px 6px; font-size: 0.7rem; max-width: 70px; }
  .logo { font-size: 0.95rem; }
  .logo .logo-mark { width: 30px; height: 30px; font-size: 0.9rem; }
}
@media (max-width: 520px) {
  .header-controls { display: none; }
  .header-search { max-width: 100%; }
  .hero h1 { font-size: 1.5rem; }
  .hero-stats { flex-direction: column; gap: var(--spacing-xs); }
  .hero-stat { flex-direction: row; align-items: baseline; gap: 8px; }
  .countdown .count-block { min-width: 40px; padding: 6px 2px; }
  .countdown .count-block .num { font-size: 1rem; }
  .btn { padding: 10px 20px; font-size: 0.875rem; }
  .container { padding: 0 var(--spacing-sm); }
}
@media (min-width: 769px) {
  .hamburger { display: none; }
}

/* roulang page: article */
:root {
  --primary: #7B1E3A;
  --primary-dark: #5C162B;
  --accent: #D4A32F;
  --accent-light: #F0C75E;
  --bg: #1A1418;
  --surface: #241A20;
  --surface-light: #2E2229;
  --text: #F5EFE6;
  --text-muted: #B8A8A0;
  --border: #3D2B30;
  --border-gold: rgba(212, 163, 47, 0.35);
  --gradient: linear-gradient(135deg, #7B1E3A 0%, #D4A32F 100%);
  --gradient-btn: linear-gradient(135deg, #7B1E3A, #D4A32F);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 6px 24px rgba(0,0,0,0.4);
  --shadow-gold: 0 4px 20px rgba(212,163,47,0.25);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --max-width: 1200px;
  --sidebar-width: 280px;
  --header-height: 64px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 56px;
  --spacing-2xl: 72px;
  --transition: all 0.25s ease-in-out;
}
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--font);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  margin: 0;
}
* { box-sizing: border-box; }
a { color: var(--accent-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.2; font-weight: 700; margin: 0 0 0.6em; }
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.4em; margin-bottom: 1em; }
blockquote {
  margin: 1.2em 0;
  padding: 1em 1.2em;
  border-left: 4px solid var(--accent);
  background: var(--surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted);
}
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-md); }

/* ========== HEADER / TOP BAR ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(26, 20, 24, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}
.site-header .container { display: flex; align-items: center; width: 100%; gap: var(--spacing-md); }
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  white-space: nowrap;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.logo .logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  font-weight: 900;
  flex-shrink: 0;
}
.logo:hover { color: var(--accent-light); }
.header-search {
  flex: 1;
  max-width: 360px;
  margin-left: auto;
  position: relative;
}
.header-search input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.875rem;
  transition: var(--transition);
}
.header-search input::placeholder { color: var(--text-muted); }
.header-search input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,163,47,0.15);
}
.header-search .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  font-size: 0.9rem;
}
.header-controls { display: flex; align-items: center; gap: var(--spacing-xs); flex-shrink: 0; }
.header-controls select {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: var(--transition);
  max-width: 110px;
}
.header-controls select:hover { border-color: var(--accent); }
.header-controls select:focus { outline: none; border-color: var(--accent); }
.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ========== SIDEBAR NAV ========== */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: var(--spacing-md) var(--spacing-sm);
  overflow-y: auto;
  z-index: 900;
  transition: transform 0.3s ease;
}
.sidebar-nav .side-item { margin-bottom: 4px; }
.sidebar-nav .side-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  text-align: left;
  width: 100%;
  background: none;
  border: none;
}
.sidebar-nav .side-link:hover {
  color: var(--text);
  background: rgba(212,163,47,0.06);
}
.sidebar-nav .side-link.active {
  color: var(--accent-light);
  background: rgba(212,163,47,0.08);
  border-left: 3px solid var(--accent);
  padding-left: 11px;
}
.sidebar-nav .side-link .arrow {
  font-size: 0.7rem;
  transition: transform 0.3s ease;
  color: var(--text-muted);
}
.sidebar-nav .side-link.expanded .arrow { transform: rotate(90deg); }
.sidebar-nav .sub-items {
  margin-left: 20px;
  display: none;
}
.sidebar-nav .sub-items.open { display: block; }
.sidebar-nav .sub-link {
  display: block;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.8125rem;
  transition: var(--transition);
}
.sidebar-nav .sub-link:hover { color: var(--accent-light); background: rgba(212,163,47,0.06); }
.sidebar-nav .sub-link.active { color: var(--accent-light); }

/* ========== MAIN CONTENT ========== */
.main-content {
  margin-left: var(--sidebar-width);
  padding-top: var(--header-height);
  min-height: 100vh;
  background: var(--bg);
}
.section { padding: var(--spacing-lg) 0; position: relative; }
.section-alt { background: var(--surface); }

/* ========== ARTICLE HERO (Narrow Banner) ========== */
.article-hero {
  background: linear-gradient(135deg, rgba(123,30,58,0.92) 0%, rgba(212,163,47,0.45) 100%);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  border-bottom: 1px solid var(--border-gold);
  position: relative;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(212,163,47,0.12), transparent 55%);
  pointer-events: none;
}
.article-hero .container { position: relative; z-index: 1; }
.article-hero h1 {
  font-size: 2.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--spacing-sm);
  max-width: 820px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.35);
}
.article-hero .hero-category-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--accent-light);
  color: var(--accent-light);
  font-size: 0.8125rem;
  font-weight: 500;
}

/* ========== BREADCRUMB ========== */
.breadcrumb-section { padding: var(--spacing-sm) 0; background: var(--surface); border-bottom: 1px solid var(--border); }
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--accent-light); font-weight: 500; }

/* ========== ARTICLE META ========== */
.article-meta-section { padding: var(--spacing-md) 0; border-bottom: 1px solid var(--border); }
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}
.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.875rem;
}
.meta-item .meta-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--surface-light);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  font-size: 0.8rem;
}
.tag-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  background: rgba(212,163,47,0.1);
  border: 1px solid var(--border-gold);
  color: var(--accent-light);
  font-size: 0.8125rem;
  font-weight: 500;
  margin-right: 6px;
  transition: var(--transition);
}
.tag-badge:hover { background: rgba(212,163,47,0.2); }
.share-group {
  display: flex;
  gap: 8px;
  margin-left: auto;
}
.share-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-gold);
  background: var(--surface-light);
  color: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: var(--transition);
}
.share-btn:hover {
  border-color: var(--accent-light);
  background: rgba(212,163,47,0.15);
  color: #fff;
  transform: translateY(-2px);
}

/* ========== ARTICLE BODY LAYOUT ========== */
.article-body-section { padding: var(--spacing-lg) 0; }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: var(--spacing-lg);
  align-items: start;
}
.article-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.85;
  box-shadow: var(--shadow);
}
.article-content p { margin-bottom: 1.2em; }
.article-content h2 {
  font-size: 1.5rem;
  color: var(--accent-light);
  margin-top: 1.8em;
  margin-bottom: 0.8em;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}
.article-content h3 {
  font-size: 1.25rem;
  color: var(--text);
  margin-top: 1.5em;
  margin-bottom: 0.7em;
}
.article-content img {
  border-radius: var(--radius-md);
  margin: 1.5em 0;
  border: 1px solid var(--border);
}
.article-content ul, .article-content ol { margin-bottom: 1.5em; }
.article-content li { margin-bottom: 6px; }
.article-content a {
  color: var(--accent-light);
  border-bottom: 1px dotted var(--border-gold);
}
.article-content a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.article-content blockquote {
  margin: 1.5em 0;
  padding: 1em 1.5em;
  border-left: 4px solid var(--accent);
  background: var(--surface-light);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-muted);
  font-style: italic;
}
.article-content pre {
  background: #1a1418;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1em;
  overflow-x: auto;
  margin-bottom: 1.5em;
}
.article-content code {
  background: rgba(212,163,47,0.08);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--accent-light);
}
.article-not-found {
  text-align: center;
  padding: var(--spacing-2xl) 0;
  color: var(--text-muted);
}
.article-not-found h2 { color: var(--text); }
.article-not-found .btn { margin-top: var(--spacing-md); }

/* ========== TOC WIDGET ========== */
.toc-widget {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
}
.toc-widget h4 {
  font-size: 0.9375rem;
  color: var(--accent-light);
  margin-bottom: var(--spacing-sm);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.toc-widget ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.toc-widget li { margin-bottom: 6px; }
.toc-widget a {
  display: block;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.8125rem;
  transition: var(--transition);
  border-left: 2px solid transparent;
}
.toc-widget a:hover {
  color: var(--accent-light);
  background: rgba(212,163,47,0.06);
  border-left-color: var(--accent);
}

/* ========== RELATED ARTICLES ========== */
.related-section { padding: var(--spacing-lg) 0; background: var(--surface-alt, #20171d); border-top: 1px solid var(--border); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}
.related-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-gold);
  transform: translateY(-3px);
}
.related-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}
.related-card .card-body { padding: var(--spacing-md); flex: 1; display: flex; flex-direction: column; }
.related-card .card-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card .card-meta {
  margin-top: auto;
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  gap: 10px;
}
.related-empty {
  text-align: center;
  padding: var(--spacing-xl) 0;
  color: var(--text-muted);
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border);
}

/* ========== PREV / NEXT ========== */
.prev-next-section { padding: var(--spacing-lg) 0; border-top: 1px solid var(--border); }
.prev-next-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}
.pn-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  transition: var(--transition);
}
.pn-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-gold);
}
.pn-card .pn-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--surface-light);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.pn-card .pn-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 3px;
}
.pn-card .pn-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.pn-card.text-right { flex-direction: row-reverse; text-align: right; }

/* ========== CTA SECTION ========== */
.article-cta {
  background: linear-gradient(135deg, rgba(123,30,58,0.6), rgba(212,163,47,0.25));
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--border-gold);
  text-align: center;
}
.article-cta h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--spacing-sm);
}
.article-cta p {
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto var(--spacing-md);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  text-align: center;
}
.btn-primary {
  background: var(--gradient-btn);
  color: #fff;
  border: none;
}
.btn-primary:hover {
  color: #fff;
  filter: brightness(1.12);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--border-gold);
  color: var(--accent-light);
}
.btn-outline:hover {
  background: rgba(212,163,47,0.1);
  border-color: var(--accent-light);
  color: #fff;
  transform: translateY(-2px);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}

/* ========== FOOTER ========== */
.site-footer {
  background: #140e12;
  border-top: 1px solid var(--border);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}
.footer-brand .logo {
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}
.footer-brand .logo .logo-mark {
  width: 32px;
  height: 32px;
  font-size: 1rem;
}
.footer-brand p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.footer-col h4 {
  font-size: 0.9375rem;
  color: var(--accent-light);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col li { margin-bottom: 8px; }
.footer-col a {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.footer-col a:hover { color: var(--accent-light); }
.footer-subscribe {
  display: flex;
  gap: 8px;
}
.footer-subscribe input {
  flex: 1;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.8125rem;
  transition: var(--transition);
}
.footer-subscribe input:focus {
  outline: none;
  border-color: var(--accent);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent-light); }

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .toc-widget { position: static; display: none; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    box-shadow: 4px 0 24px rgba(0,0,0,0.5);
  }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .hamburger { display: flex; }
  .header-search { display: none; }
  .header-controls select { max-width: 90px; font-size: 0.75rem; }
  .article-hero h1 { font-size: 1.75rem; }
  .article-content { padding: var(--spacing-md); font-size: 0.9375rem; }
  .related-grid { grid-template-columns: 1fr; }
  .prev-next-grid { grid-template-columns: 1fr; }
  .article-cta h2 { font-size: 1.4rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .share-group { margin-left: 0; }
}
@media (max-width: 520px) {
  .article-hero h1 { font-size: 1.4rem; }
  .article-content { padding: var(--spacing-sm); font-size: 0.875rem; }
  .btn { width: 100%; padding: 12px 20px; }
  .article-meta { flex-direction: column; align-items: flex-start; }
  .header-controls select { display: none; }
}

/* roulang page: category1 */
/* ==========================================
   roulang design system — shared across pages
   ========================================== */
:root {
  --primary: #7B1E3A;
  --primary-dark: #5C162B;
  --accent: #D4A32F;
  --accent-light: #F0C75E;
  --bg: #1A1418;
  --surface: #241A20;
  --surface-light: #2E2229;
  --text: #F5EFE6;
  --text-muted: #B8A8A0;
  --border: #3D2B30;
  --border-gold: rgba(212, 163, 47, 0.35);
  --gradient: linear-gradient(135deg, #7B1E3A 0%, #D4A32F 100%);
  --gradient-btn: linear-gradient(135deg, #7B1E3A, #D4A32F);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 6px 24px rgba(0,0,0,0.4);
  --shadow-gold: 0 4px 20px rgba(212,163,47,0.25);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --max-width: 1200px;
  --sidebar-width: 280px;
  --header-height: 64px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 56px;
  --spacing-2xl: 72px;
  --transition: all 0.25s ease-in-out;
}
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--font);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  margin: 0;
}
a { color: var(--accent-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
*, *::before, *::after { box-sizing: border-box; }
h1, h2, h3, h4, h5, h6 { margin: 0 0 0.5em; line-height: 1.25; font-weight: 700; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-md); }

/* ========== HEADER / NAV ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(26, 20, 24, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}
.site-header .container { display: flex; align-items: center; width: 100%; gap: var(--spacing-md); }
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  white-space: nowrap;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.logo .logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  font-weight: 900;
  flex-shrink: 0;
}
.logo:hover { color: var(--accent-light); }
.header-search {
  flex: 1;
  max-width: 360px;
  margin-left: auto;
  position: relative;
}
.header-search input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.875rem;
  transition: var(--transition);
}
.header-search input::placeholder { color: var(--text-muted); }
.header-search input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,163,47,0.15);
}
.header-search .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  font-size: 0.9rem;
}
.header-controls { display: flex; align-items: center; gap: var(--spacing-xs); flex-shrink: 0; }
.header-controls select {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: var(--transition);
  max-width: 110px;
}
.header-controls select:hover { border-color: var(--accent); }
.header-controls select:focus { outline: none; border-color: var(--accent); }
.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ========== SIDEBAR NAV ========== */
.sidebar-nav { padding: var(--spacing-md); }
.sidebar-nav .side-item { margin-bottom: 4px; }
.sidebar-nav .side-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  width: 100%;
  text-align: left;
}
.sidebar-nav .side-link:hover {
  color: var(--text);
  background: var(--surface);
}
.sidebar-nav .side-link.active {
  color: var(--accent-light);
  background: var(--surface);
  border-left: 3px solid var(--accent);
  padding-left: 11px;
}
.sidebar-nav .side-link .arrow {
  font-size: 0.7rem;
  transition: transform 0.3s ease;
  color: var(--text-muted);
}
.sidebar-nav .side-link.expanded .arrow { transform: rotate(90deg); }
.sidebar-nav .sub-items {
  margin-left: 20px;
  display: none;
}
.sidebar-nav .sub-items.open { display: block; }
.sidebar-nav .sub-link {
  display: block;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.8125rem;
  transition: var(--transition);
}
.sidebar-nav .sub-link:hover { color: var(--accent-light); background: rgba(212,163,47,0.06); }
.sidebar-nav .sub-link.active { color: var(--accent-light); }

/* ========== LAYOUT ========== */
.layout-wrapper { display: flex; min-height: 100vh; }
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  z-index: 900;
  padding-top: var(--spacing-sm);
}
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding-top: var(--header-height);
  min-width: 0;
}

/* ========== SECTIONS ========== */
.section { padding: var(--spacing-xl) 0; position: relative; }
.section-alt { background: var(--surface); }
.section-muted { background: var(--surface-light); }
.section-heading {
  max-width: 680px;
  margin-bottom: var(--spacing-lg);
}
.section-heading .eyebrow {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  background: rgba(212,163,47,0.12);
  color: var(--accent-light);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: var(--spacing-sm);
}
.section-heading h2 {
  font-size: 1.875rem;
  color: var(--text);
  letter-spacing: 0.01em;
  font-weight: 800;
}
.section-heading p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin: var(--spacing-sm) 0 0;
}

/* ========== CATEGORY BANNER ========== */
.category-banner {
  background: var(--gradient);
  padding: var(--spacing-lg) 0;
  position: relative;
  overflow: hidden;
}
.category-banner .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  color: rgba(245,239,230,0.75);
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
}
.category-banner .breadcrumb a { color: rgba(245,239,230,0.9); }
.category-banner .breadcrumb a:hover { color: #fff; }
.category-banner .breadcrumb .sep { opacity: 0.6; }
.category-banner h1 {
  font-size: 2.25rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.01em;
  margin-bottom: var(--spacing-xs);
}
.category-banner .banner-desc {
  color: rgba(245,239,230,0.85);
  font-size: 1rem;
  max-width: 720px;
  margin: 0;
}

/* ========== CARDS GRID ========== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
}
.card-grid.categories-grid { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow);
}
.card:hover {
  border-color: var(--border-gold);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
.card .card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--surface-light);
}
.card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.card:hover .card-img img { transform: scale(1.04); }
.card .card-body { padding: var(--spacing-md); }
.card .card-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  background: rgba(212,163,47,0.12);
  color: var(--accent-light);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}
.card .card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--spacing-xs);
}
.card .card-summary {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}
.card .card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.card .card-link {
  color: var(--accent-light);
  font-weight: 600;
  font-size: 0.875rem;
}

/* ========== FILTER BAR ========== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  padding: var(--spacing-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.filter-bar label {
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
}
.filter-bar select, .filter-bar input {
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-light);
  color: var(--text);
  font-size: 0.875rem;
  transition: var(--transition);
  min-width: 140px;
}
.filter-bar select:focus, .filter-bar input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212,163,47,0.12);
}
.btn-filter {
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  background: var(--surface-light);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8125rem;
  transition: var(--transition);
  font-weight: 600;
}
.btn-filter:hover { border-color: var(--accent); color: var(--accent-light); }
.btn-filter.active {
  background: rgba(212,163,47,0.15);
  border-color: var(--accent);
  color: var(--accent-light);
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 13px 28px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.9375rem;
  transition: var(--transition);
  text-align: center;
  line-height: 1.3;
}
.btn-primary {
  background: var(--gradient-btn);
  color: #fff;
  border: none;
}
.btn-primary:hover {
  color: #fff;
  filter: brightness(1.1);
  box-shadow: var(--shadow-gold);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--accent-light);
  border: 1px solid var(--accent);
}
.btn-outline:hover {
  background: rgba(212,163,47,0.12);
  border-color: var(--accent-light);
  color: var(--accent-light);
  box-shadow: inset 0 0 12px rgba(212,163,47,0.08);
}
.btn-sm { padding: 8px 16px; font-size: 0.8125rem; border-radius: var(--radius-sm); }
.btn-lg { padding: 16px 36px; font-size: 1.0625rem; }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ========== BADGES ========== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.badge-gold { background: rgba(212,163,47,0.15); color: var(--accent-light); border: 1px solid var(--border-gold); }
.badge-dark { background: var(--primary-dark); color: #fff; }
.badge-surface { background: var(--surface-light); color: var(--text-muted); border: 1px solid var(--border); }

/* ========== DATA BADGES BAND ========== */
.data-band {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  align-items: stretch;
}
.data-item {
  flex: 1;
  min-width: 160px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  text-align: center;
  transition: var(--transition);
}
.data-item:hover { border-color: var(--border-gold); }
.data-item .data-value {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent-light);
  line-height: 1.1;
  letter-spacing: 0.01em;
}
.data-item .data-label {
  margin-top: var(--spacing-xs);
  color: var(--text-muted);
  font-size: 0.8125rem;
}

/* ========== THEME STRIP ========== */
.theme-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
}
.theme-strip .theme-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.theme-strip .theme-item:hover { border-color: var(--border-gold); background: var(--surface-light); }
.theme-strip .theme-thumb {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--surface-light);
}
.theme-strip .theme-thumb img { width: 100%; height: 100%; object-fit: cover; }
.theme-strip .theme-name {
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.3;
}
.theme-strip .theme-count { color: var(--text-muted); font-size: 0.75rem; }

/* ========== UPDATE LIST ========== */
.update-list { max-width: 760px; }
.update-list .update-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border);
}
.update-list .update-item:last-child { border-bottom: none; }
.update-list .update-date {
  flex-shrink: 0;
  background: var(--surface-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  min-width: 72px;
  text-align: center;
}
.update-list .update-text { color: var(--text); font-size: 0.875rem; }
.update-list .update-text strong { color: var(--accent-light); font-weight: 600; }
.update-list .update-text span { color: var(--text-muted); font-size: 0.8125rem; }

/* ========== FAQ ========== */
.faq-list { max-width: 760px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-gold); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: var(--transition);
}
.faq-question .arrow {
  font-size: 0.75rem;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: var(--spacing-sm);
}
.faq-item.open .faq-question .arrow { transform: rotate(90deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 var(--spacing-md);
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 var(--spacing-md) var(--spacing-md);
}
.faq-answer p {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.6;
  margin: 0;
}

/* ========== CTA SECTION ========== */
.cta-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(212,163,47,0.08), transparent 50%);
  pointer-events: none;
}
.cta-inner {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}
.cta-inner .cta-text { flex: 1; min-width: 280px; }
.cta-inner h2 {
  font-size: 1.875rem;
  color: var(--text);
  font-weight: 800;
}
.cta-inner p { color: var(--text-muted); font-size: 0.9375rem; margin: var(--spacing-sm) 0 0; }
.cta-actions { display: flex; gap: var(--spacing-sm); flex-shrink: 0; }

/* ========== FOOTER ========== */
.site-footer {
  background: #161116;
  border-top: 1px solid var(--border);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  color: var(--text-muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}
.footer-brand .logo { margin-bottom: var(--spacing-sm); }
.footer-brand p { font-size: 0.8125rem; color: var(--text-muted); max-width: 280px; }
.footer-col h4 {
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}
.footer-col ul li { margin-bottom: var(--spacing-xs); }
.footer-col ul a {
  color: var(--text-muted);
  font-size: 0.8125rem;
  transition: var(--transition);
}
.footer-col ul a:hover { color: var(--accent-light); }
.footer-subscribe { display: flex; gap: var(--spacing-xs); flex-wrap: wrap; }
.footer-subscribe input {
  flex: 1;
  min-width: 160px;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.8125rem;
}
.footer-subscribe input:focus { outline: none; border-color: var(--accent); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent-light); }

/* ========== SIDEBAR OVERLAY ========== */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 850;
}
.sidebar-overlay.show { display: block; }

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .card-grid.categories-grid { grid-template-columns: repeat(2, 1fr); }
  .theme-strip { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    width: 280px;
    background: var(--bg);
  }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .hamburger { display: flex; }
  .header-search { max-width: 160px; }
  .header-controls select { display: none; }
  .header-controls select:nth-of-type(1) { display: inline-block; }
  .category-banner h1 { font-size: 1.75rem; }
  .card-grid { grid-template-columns: 1fr; }
  .card-grid.categories-grid { grid-template-columns: 1fr; }
  .theme-strip { grid-template-columns: 1fr; }
  .data-band { flex-direction: column; }
  .data-item { min-width: 100%; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .cta-actions { width: 100%; flex-wrap: wrap; }
  .cta-actions .btn { flex: 1; min-width: 140px; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .section { padding: var(--spacing-lg) 0; }
  .section-heading h2 { font-size: 1.5rem; }
  .cta-inner h2 { font-size: 1.5rem; }
}
@media (max-width: 520px) {
  .header-search { max-width: 120px; }
  .header-search input { padding-left: 34px; font-size: 0.8125rem; }
  .logo { font-size: 1rem; }
  .logo .logo-mark { width: 30px; height: 30px; font-size: 1rem; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .filter-bar select { width: 100%; }
  .category-banner { padding: var(--spacing-md) 0; }
  .category-banner h1 { font-size: 1.5rem; }
  .btn { padding: 11px 20px; font-size: 0.875rem; }
  .data-item .data-value { font-size: 1.75rem; }
}