/* roulang page: index */
:root {
  --primary: #0B6B4A;
  --primary-hover: #095A3E;
  --primary-soft: #E7F4EE;
  --primary-soft-2: #D2EAE0;
  --accent: #F0B90B;
  --accent-hover: #D6A409;
  --accent-soft: #FEF6DE;
  --dark: #0C1D17;
  --dark-2: #132B21;
  --dark-3: #1A3A2D;
  --text: #1B2B24;
  --text-muted: #64736B;
  --bg: #F4F8F6;
  --bg-white: #FFFFFF;
  --border: #DFE9E3;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 12px rgba(8, 45, 30, 0.06);
  --shadow: 0 12px 40px rgba(8, 45, 30, 0.10);
  --shadow-lg: 0 24px 60px rgba(8, 45, 30, 0.16);
  --space-section: clamp(56px, 8vw, 100px);
  --nav-h: 58px;
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 640px) { .container { padding: 0 16px; } }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(8, 45, 30, 0.08), 0 4px 20px rgba(8, 45, 30, 0.04);
}
.header-top { border-bottom: 1px solid var(--border); }
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 16px;
}
.brand-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary) 0%, #0D8A60 100%);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 20px; color: #fff;
  box-shadow: 0 4px 14px rgba(11, 107, 74, 0.35);
  letter-spacing: -1px;
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.3px;
  line-height: 1.2;
}
.logo-text small {
  display: block;
  font-size: 10px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  line-height: 1.3;
}
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-search {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 40px;
  padding: 6px 6px 6px 14px;
  transition: var(--transition);
  max-width: 280px;
  width: 100%;
}
.header-search:focus-within { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(11, 107, 74, 0.12); }
.header-search input {
  border: none; outline: none; background: transparent;
  font-size: 13px; color: var(--text); width: 100%;
}
.header-search .search-icon {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--primary);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 13px; flex-shrink: 0;
}
.header-cta {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary);
  color: #fff;
  padding: 8px 18px;
  border-radius: 40px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(11, 107, 74, 0.25);
  transition: var(--transition);
}
.header-cta:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(11, 107, 74, 0.35); }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}
.nav-toggle span {
  display: block; width: 18px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.header-nav { background: #fff; }
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  height: var(--nav-h);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tabs li { flex-shrink: 0; }
.nav-tabs a {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
}
.nav-tabs a:hover { color: var(--primary); background: var(--primary-soft); }
.nav-tabs li.active a {
  color: var(--primary);
  background: var(--primary-soft);
  font-weight: 700;
}
.nav-tabs li.active a::after {
  content: '';
  position: absolute;
  left: 20px; right: 20px; bottom: 3px;
  height: 3px;
  border-radius: 4px;
  background: var(--primary);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 40px;
  font-size: 15px;
  font-weight: 700;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 20px rgba(11, 107, 74, 0.28); }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-3px); box-shadow: 0 10px 28px rgba(11, 107, 74, 0.38); }
.btn-outline { border-color: rgba(255,255,255,0.6); color: #fff; background: rgba(255,255,255,0.08); backdrop-filter: blur(4px); }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.18); transform: translateY(-3px); }
.btn-outline-dark { border-color: var(--primary); color: var(--primary); background: transparent; }
.btn-outline-dark:hover { background: var(--primary-soft); transform: translateY(-3px); box-shadow: 0 8px 20px rgba(11,107,74,0.12); }
.btn-accent { background: var(--accent); color: var(--dark); box-shadow: 0 6px 20px rgba(240, 185, 11, 0.3); }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-3px); box-shadow: 0 10px 28px rgba(240, 185, 11, 0.4); }
.btn-light { background: #fff; color: var(--primary); box-shadow: 0 6px 20px rgba(0,0,0,0.12); }
.btn-light:hover { background: var(--primary-soft); transform: translateY(-3px); }
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn:focus-visible, a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(240, 185, 11, 0.5);
  outline-offset: 2px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.6;
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(12, 29, 23, 0.92) 0%, rgba(12, 29, 23, 0.72) 50%, rgba(12, 29, 23, 0.35) 100%);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: radial-gradient(ellipse at 30% 50%, rgba(11, 107, 74, 0.35) 0%, transparent 65%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 60px;
  padding-bottom: 60px;
  max-width: 700px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
  color: #fff;
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 24px;
  animation: fadeUp 0.7s ease both;
}
.hero-badge::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.hero h1 {
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
  animation: fadeUp 0.7s 0.1s ease both;
}
.hero h1 .highlight { color: var(--accent); }
.hero-desc {
  font-size: clamp(15px, 1.6vw, 18px);
  color: rgba(255,255,255,0.85);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 560px;
  animation: fadeUp 0.7s 0.2s ease both;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  animation: fadeUp 0.7s 0.3s ease both;
}
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.14);
  flex-wrap: wrap;
  animation: fadeUp 0.7s 0.4s ease both;
}
.hero-stat { text-align: left; }
.hero-stat .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.hero-stat .label {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}
.scroll-down {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255,255,255,0.6);
  font-size: 20px;
  animation: bounce 2s infinite;
}
@keyframes bounce { 0%, 100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }

/* ---------- Section common ---------- */
.section { padding: var(--space-section) 0; }
.section-bg { background: #fff; }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
  padding: 5px 16px;
  background: var(--primary-soft);
  border-radius: 20px;
}
.section-title {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ---------- Feature cards ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 54px; height: 54px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  background: var(--primary-soft);
  margin-bottom: 20px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon { background: var(--primary); box-shadow: 0 8px 20px rgba(11,107,74,0.3); }
.feature-icon svg { width: 26px; height: 26px; stroke: var(--primary); transition: var(--transition); }
.feature-card:hover .feature-icon svg { stroke: #fff; }
.feature-card h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ---------- Category cards ---------- */
.category-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.category-card img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.category-card:hover img { transform: scale(1.06); }
.category-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12,29,23,0.1) 0%, rgba(12,29,23,0.55) 60%, rgba(12,29,23,0.85) 100%);
}
.category-card-body {
  position: relative;
  z-index: 2;
  padding: 36px 32px;
  color: #fff;
}
.category-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  background: rgba(240,185,11,0.9);
  color: var(--dark);
  margin-bottom: 14px;
}
.category-card h3 { font-size: 24px; font-weight: 800; margin-bottom: 8px; }
.category-card p { font-size: 14px; color: rgba(255,255,255,0.85); margin-bottom: 16px; max-width: 320px; line-height: 1.7; }
.category-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}
.category-more:hover { gap: 10px; }

/* ---------- Latest section ---------- */
.latest-wrap {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 32px;
  align-items: start;
}
.latest-list { display: flex; flex-direction: column; gap: 16px; }
.latest-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: var(--transition);
}
.latest-item:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateX(6px); }
.latest-tag {
  flex-shrink: 0;
  max-width: 96px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--primary-soft);
  color: var(--primary);
}
.latest-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: var(--transition);
}
.latest-item:hover .latest-title { color: var(--primary); }
.latest-desc {
  grid-column: 2 / -1;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.latest-date {
  flex-shrink: 0;
  font-size: 12px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.latest-arrow { color: var(--primary); font-size: 16px; }
.empty-state {
  background: var(--bg-white);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
}
.side-card {
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: 32px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.side-card::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: rgba(240,185,11,0.15);
}
.side-card .side-label {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 10px;
}
.side-card h3 { font-size: 20px; margin-bottom: 12px; line-height: 1.4; }
.side-card p { font-size: 13px; color: rgba(255,255,255,0.75); line-height: 1.7; margin-bottom: 20px; }
.side-card a { color: var(--accent); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }

/* ---------- Platform band ---------- */
.platform-band {
  position: relative;
  background: var(--dark);
  overflow: hidden;
}
.platform-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.3;
}
.platform-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--dark) 30%, rgba(12,29,23,0.7) 100%);
}
.platform-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}
.platform-content .section-eyebrow { background: rgba(240,185,11,0.15); color: var(--accent); }
.platform-content h2 {
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.platform-content > p { font-size: 15px; color: rgba(255,255,255,0.75); margin-bottom: 24px; line-height: 1.8; }
.platform-points { margin-bottom: 30px; }
.platform-points li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  color: rgba(255,255,255,0.9);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.platform-points li:last-child { border-bottom: none; }
.platform-points li::before {
  content: '✓';
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--dark);
  font-size: 12px;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.platform-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.1);
  position: relative;
}
.platform-visual img { width: 100%; height: 360px; object-fit: cover; }
.platform-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, transparent 50%, rgba(12,29,23,0.4) 100%);
}

/* ---------- Process ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.process-step {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  position: relative;
  transition: var(--transition);
}
.process-step:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.step-num {
  display: inline-block;
  font-size: 44px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 2px var(--primary);
  line-height: 1;
  margin-bottom: 20px;
  font-variant-numeric: tabular-nums;
  opacity: 0.7;
  transition: var(--transition);
}
.process-step:hover .step-num { opacity: 1; -webkit-text-stroke-color: var(--accent); }
.process-step h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.process-step p { font-size: 13.5px; color: var(--text-muted); line-height: 1.7; }

/* ---------- Data band ---------- */
.data-band {
  background: var(--dark-2);
  position: relative;
  overflow: hidden;
}
.data-band::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(240,185,11,0.4), transparent);
}
.data-band-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding: 60px 0;
}
.data-item { text-align: center; }
.data-item .data-num {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  margin-bottom: 8px;
}
.data-item .data-label {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  letter-spacing: 1px;
}
.data-item .data-divider {
  width: 40px; height: 3px;
  background: rgba(255,255,255,0.2);
  border-radius: 4px;
  margin: 16px auto 0;
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover, .faq-item.active { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  text-align: left;
  width: 100%;
}
.faq-question .faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  color: var(--primary);
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.active .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ---------- CTA ---------- */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
  overflow: hidden;
  padding: var(--space-section) 0;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(240,185,11,0.08);
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -60px; left: 20%;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: rgba(11,107,74,0.3);
  filter: blur(60px);
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
}
.cta-inner p { font-size: 15px; color: rgba(255,255,255,0.75); margin-bottom: 32px; line-height: 1.8; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-note {
  margin-top: 20px;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding-top: 64px;
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .brand-logo { margin-bottom: 16px; }
.footer-brand .brand-logo .logo-text { color: #fff; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
  max-width: 260px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 12px;
}
.footer-contact li .icon {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  color: var(--accent);
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .latest-wrap { grid-template-columns: 1fr; }
  .platform-inner { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .header-search { max-width: 200px; }
}
@media (max-width: 768px) {
  .header-top-inner { height: 60px; }
  .header-search { display: none; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
  .nav-tabs {
    height: auto;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding: 8px 0;
    gap: 6px;
  }
  .nav-tabs a { padding: 7px 16px; font-size: 13px; white-space: nowrap; }
  .nav-tabs li.active a::after { left: 16px; right: 16px; }
  .hero { min-height: 520px; }
  .hero-content { padding-top: 40px; padding-bottom: 40px; }
  .hero-stats { gap: 24px; margin-top: 32px; }
  .category-grid { grid-template-columns: 1fr; }
  .data-band-inner { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .features-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .hero-actions .btn { width: 100%; }
  .latest-item { grid-template-columns: 1fr auto; gap: 8px 12px; }
  .latest-tag { grid-column: 1 / -1; }
  .latest-desc { grid-column: 1 / -1; }
  .platform-points li { font-size: 14px; }
  .data-band-inner { grid-template-columns: 1fr; gap: 24px; }
  .category-card { min-height: 260px; }
  .category-card-body { padding: 24px 20px; }
  .section-header { margin-bottom: 32px; }
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
    :root {
      --primary: #00c2ff;
      --primary-glow: rgba(0, 194, 255, 0.35);
      --secondary: #00e5a0;
      --bg-deep: #070d18;
      --bg-body: #0b1322;
      --bg-section: #0e1728;
      --bg-card: #131f33;
      --bg-card-hover: #192840;
      --bg-input: #0d1727;
      --border-dark: #223049;
      --border-light: #2c3b54;
      --text-main: #eaf1fb;
      --text-body: #b6c2d4;
      --text-light: #8292a8;
      --text-faint: #5c6c82;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 22px;
      --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.2);
      --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.3);
      --shadow-glow: 0 0 0 1px rgba(0, 194, 255, 0.12), 0 12px 36px rgba(0, 194, 255, 0.08);
      --gradient-main: linear-gradient(135deg, #00c2ff 0%, #00e5a0 100%);
      --space-section: 84px;
    }

    /* ============ Reset & Base ============ */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      background: var(--bg-body);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button, input {
      font-family: inherit;
      font-size: inherit;
    }
    ul {
      list-style: none;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .section {
      padding: var(--space-section) 0;
    }
    .section-alt {
      background: var(--bg-section);
    }
    ::selection {
      background: rgba(0, 194, 255, 0.3);
    }

    /* ============ 按钮 ============ */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 40px;
      font-size: 15px;
      font-weight: 600;
      letter-spacing: 0.3px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.3s ease;
      background: var(--gradient-main);
      color: #05101a;
      box-shadow: 0 6px 20px rgba(0, 194, 255, 0.25);
    }
    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 28px rgba(0, 194, 255, 0.4);
    }
    .btn-outline {
      background: transparent;
      border-color: rgba(0, 194, 255, 0.6);
      color: var(--primary);
      box-shadow: none;
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(0, 194, 255, 0.08);
    }
    .btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 3px;
    }

    /* ============ Header 双层导航 ============ */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(7, 13, 24, 0.92);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(34, 48, 73, 0.65);
    }
    .header-top {
      border-bottom: 1px solid rgba(34, 48, 73, 0.4);
    }
    .header-top-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 24px;
    }
    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .logo-mark {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: var(--gradient-main);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 20px;
      color: #05101a;
      box-shadow: 0 0 20px rgba(0, 194, 255, 0.35);
    }
    .logo-text {
      display: flex;
      flex-direction: column;
      line-height: 1.2;
      font-size: 19px;
      font-weight: 700;
      letter-spacing: 1px;
      color: var(--text-main);
    }
    .logo-text small {
      font-size: 10px;
      letter-spacing: 2.5px;
      color: var(--text-light);
      font-weight: 500;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 18px;
    }
    .header-search {
      position: relative;
      display: flex;
      align-items: center;
    }
    .header-search input {
      width: 220px;
      padding: 9px 38px 9px 16px;
      border-radius: 40px;
      border: 1px solid var(--border-dark);
      background: var(--bg-input);
      color: var(--text-main);
      font-size: 14px;
      transition: border-color 0.25s ease, width 0.3s ease;
    }
    .header-search input::placeholder {
      color: var(--text-faint);
    }
    .header-search input:focus {
      border-color: var(--primary);
      width: 260px;
      box-shadow: 0 0 0 3px rgba(0, 194, 255, 0.15);
    }
    .search-icon {
      position: absolute;
      right: 14px;
      font-size: 14px;
      color: var(--text-light);
      pointer-events: none;
    }
    .header-cta {
      padding: 9px 22px;
      border-radius: 40px;
      background: var(--gradient-main);
      color: #05101a;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 16px rgba(0, 194, 255, 0.25);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .header-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0, 194, 255, 0.4);
    }
    .nav-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-dark);
      border-radius: 10px;
      width: 42px;
      height: 38px;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 4px;
      cursor: pointer;
    }
    .nav-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      background: var(--text-main);
      border-radius: 4px;
      transition: 0.3s ease;
    }
    .header-nav {
      background: rgba(7, 13, 24, 0.85);
    }
    .nav-tabs {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 2px 0;
      overflow-x: auto;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }
    .nav-tabs::-webkit-scrollbar {
      display: none;
    }
    .nav-tabs li a {
      display: inline-block;
      padding: 14px 26px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-light);
      border-radius: 10px 10px 0 0;
      border-bottom: 3px solid transparent;
      white-space: nowrap;
      transition: 0.25s ease;
    }
    .nav-tabs li a:hover {
      color: var(--text-main);
      background: rgba(0, 194, 255, 0.05);
    }
    .nav-tabs li.active a {
      color: var(--primary);
      border-bottom-color: var(--primary);
      background: rgba(0, 194, 255, 0.06);
    }

    /* ============ Hero / Banner ============ */
    .category-banner {
      position: relative;
      min-height: 380px;
      display: flex;
      align-items: center;
      padding: 80px 0;
      background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
      isolation: isolate;
    }
    .category-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(130deg, rgba(7, 13, 24, 0.92) 30%, rgba(7, 13, 24, 0.65) 80%);
      z-index: -1;
    }
    .category-banner::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 120px;
      background: linear-gradient(to bottom, transparent, var(--bg-body));
      z-index: 0;
      pointer-events: none;
    }
    .banner-content {
      position: relative;
      z-index: 2;
      max-width: 700px;
    }
    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 20px;
    }
    .breadcrumb a {
      color: var(--text-light);
    }
    .breadcrumb a:hover {
      color: var(--primary);
    }
    .breadcrumb .sep {
      color: var(--text-faint);
    }
    .banner-content h1 {
      font-size: 44px;
      line-height: 1.22;
      font-weight: 800;
      letter-spacing: 1px;
      margin-bottom: 14px;
    }
    .banner-content h1 .highlight {
      background: var(--gradient-main);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .banner-content p {
      font-size: 17px;
      color: var(--text-body);
      margin-bottom: 28px;
      max-width: 560px;
      line-height: 1.7;
    }
    .banner-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 36px;
      margin-top: 20px;
    }
    .banner-stats .stat-item {
      display: flex;
      flex-direction: column;
    }
    .banner-stats .stat-num {
      font-size: 28px;
      font-weight: 800;
      background: var(--gradient-main);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .banner-stats .stat-label {
      font-size: 13px;
      color: var(--text-light);
      margin-top: 2px;
    }

    /* ============ 板块标题 ============ */
    .section-head {
      margin-bottom: 42px;
      display: flex;
      flex-wrap: wrap;
      align-items: flex-end;
      justify-content: space-between;
      gap: 16px;
    }
    .section-head .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 2px;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 7px;
    }
    .section-head .eyebrow::before {
      content: '';
      width: 24px;
      height: 2px;
      background: var(--gradient-main);
      border-radius: 2px;
    }
    .section-head h2 {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.3;
      letter-spacing: 0.5px;
    }
    .section-head .subtitle {
      color: var(--text-light);
      font-size: 15px;
      margin-top: 6px;
      max-width: 560px;
    }
    .section-link {
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
    }
    .section-link:hover {
      text-decoration: underline;
    }

    /* ============ 子分类卡片 ============ */
    .sub-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .sub-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    }
    .sub-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-glow);
      border-color: rgba(0, 194, 255, 0.4);
    }
    .sub-card .cover {
      position: relative;
      height: 170px;
      overflow: hidden;
    }
    .sub-card .cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .sub-card:hover .cover img {
      transform: scale(1.05);
    }
    .sub-card .cover::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(7, 13, 24, 0.6), transparent 60%);
    }
    .sub-card .badge {
      position: absolute;
      top: 12px;
      left: 12px;
      z-index: 2;
      background: rgba(0, 194, 255, 0.85);
      color: #05101a;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
      backdrop-filter: blur(4px);
    }
    .sub-card .card-body {
      padding: 18px 20px 22px;
    }
    .sub-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .sub-card p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.6;
      margin-bottom: 14px;
    }
    .sub-card .card-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .sub-card .card-link:hover {
      gap: 8px;
    }

    /* ============ 最新资讯列表 ============ */
    .news-layout {
      display: grid;
      grid-template-columns: 1fr 1.4fr;
      gap: 28px;
    }
    .featured-news {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-dark);
      overflow: hidden;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .featured-news:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }
    .featured-news .cover-wrap {
      position: relative;
      height: 240px;
      overflow: hidden;
    }
    .featured-news .cover-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .featured-news .cover-wrap::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(7, 13, 24, 0.8), transparent 70%);
    }
    .featured-news .tag {
      position: absolute;
      top: 16px;
      left: 16px;
      z-index: 2;
      background: var(--gradient-main);
      color: #05101a;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 20px;
    }
    .featured-news .featured-content {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .featured-news .featured-content h3 {
      font-size: 20px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
    }
    .featured-news .featured-content p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.65;
      flex: 1;
    }
    .news-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-top: 16px;
      color: var(--text-light);
      font-size: 13px;
    }
    .news-meta .dot {
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: var(--primary);
    }

    .news-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .news-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      padding: 18px 20px;
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
    }
    .news-item:hover {
      border-color: rgba(0, 194, 255, 0.45);
      background: var(--bg-card-hover);
      transform: translateX(4px);
    }
    .news-item .news-rank {
      width: 34px;
      height: 34px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 15px;
      background: rgba(0, 194, 255, 0.12);
      color: var(--primary);
      flex-shrink: 0;
    }
    .news-item:nth-child(n+4) .news-rank {
      background: rgba(0, 229, 160, 0.12);
      color: var(--secondary);
    }
    .news-item .news-info {
      flex: 1;
      min-width: 0;
    }
    .news-item .news-title {
      font-size: 15px;
      font-weight: 600;
      line-height: 1.45;
      color: var(--text-main);
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .news-item .news-title:hover {
      color: var(--primary);
    }
    .news-item .news-bottom {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-top: 6px;
      font-size: 12px;
      color: var(--text-faint);
    }
    .news-tag {
      color: var(--primary);
      background: rgba(0, 194, 255, 0.08);
      padding: 2px 10px;
      border-radius: 20px;
      font-size: 12px;
    }

    /* ============ 数据面板 ============ */
    .data-band {
      background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
      position: relative;
      padding: 70px 0;
      isolation: isolate;
    }
    .data-band::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(7, 13, 24, 0.94) 40%, rgba(7, 13, 24, 0.78) 100%);
      z-index: -1;
    }
    .data-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .data-card {
      background: rgba(19, 31, 51, 0.75);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border: 1px solid rgba(0, 194, 255, 0.18);
      border-radius: var(--radius-lg);
      padding: 26px;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .data-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-glow);
    }
    .data-card .data-competition {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      letter-spacing: 1px;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .data-card .data-teams {
      font-size: 17px;
      font-weight: 700;
      line-height: 1.5;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .data-card .data-score {
      font-size: 30px;
      font-weight: 800;
      background: var(--gradient-main);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 10px;
    }
    .data-card .data-status {
      display: inline-block;
      font-size: 12px;
      color: var(--secondary);
      background: rgba(0, 229, 160, 0.1);
      padding: 3px 12px;
      border-radius: 20px;
    }
    .data-card .data-progress {
      height: 6px;
      background: rgba(255, 255, 255, 0.08);
      border-radius: 6px;
      margin-top: 14px;
      overflow: hidden;
    }
    .data-card .data-progress span {
      display: block;
      height: 100%;
      border-radius: 6px;
      background: var(--gradient-main);
    }

    /* ============ 深度阅读 ============ */
    .reading-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .reading-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .reading-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-glow);
      border-color: rgba(0, 194, 255, 0.35);
    }
    .reading-card .cover-wrap {
      height: 175px;
      overflow: hidden;
    }
    .reading-card .cover-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .reading-card:hover .cover-wrap img {
      transform: scale(1.05);
    }
    .reading-card .reading-body {
      padding: 20px 22px 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .reading-card .reading-tag {
      font-size: 12px;
      color: var(--primary);
      font-weight: 600;
      letter-spacing: 0.5px;
      margin-bottom: 6px;
    }
    .reading-card h3 {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 8px;
    }
    .reading-card p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.6;
      flex: 1;
      overflow: hidden;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
    }
    .reading-card .reading-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 16px;
      font-size: 13px;
      color: var(--text-faint);
    }
    .reading-card .reading-footer a {
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* ============ 流程 ============ */
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .flow-step {
      position: relative;
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      text-align: center;
      transition: transform 0.3s ease, border-color 0.3s ease;
    }
    .flow-step:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 194, 255, 0.35);
    }
    .flow-step .step-num {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      background: var(--gradient-main);
      color: #05101a;
      font-weight: 800;
      font-size: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      box-shadow: 0 0 24px rgba(0, 194, 255, 0.25);
    }
    .flow-step h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .flow-step p {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.6;
    }
    .flow-step::after {
      content: '→';
      position: absolute;
      top: 50%;
      right: -18px;
      transform: translateY(-50%);
      color: var(--text-faint);
      font-size: 20px;
      z-index: 2;
    }
    .flow-step:last-child::after {
      display: none;
    }

    /* ============ FAQ ============ */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
    }
    .faq-item:hover {
      border-color: rgba(0, 194, 255, 0.3);
    }
    .faq-item.open {
      border-color: rgba(0, 194, 255, 0.45);
      box-shadow: var(--shadow-glow);
    }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 22px;
      background: transparent;
      border: none;
      color: var(--text-main);
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      text-align: left;
      transition: background 0.2s ease;
    }
    .faq-question:hover {
      background: rgba(0, 194, 255, 0.04);
    }
    .faq-question .icon {
      width: 26px;
      height: 26px;
      border-radius: 50%;
      border: 1px solid var(--border-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
      flex-shrink: 0;
    }
    .faq-item.open .faq-question .icon {
      transform: rotate(45deg);
      background: var(--primary);
      border-color: var(--primary);
      color: #05101a;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 22px;
      font-size: 14px;
      line-height: 1.75;
      color: var(--text-body);
    }
    .faq-item.open .faq-answer {
      max-height: 260px;
      padding: 0 22px 18px;
    }

    /* ============ CTA ============ */
    .cta-section {
      position: relative;
      padding: 74px 0;
      background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
      isolation: isolate;
      text-align: center;
    }
    .cta-section::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(7, 13, 24, 0.9), rgba(7, 13, 24, 0.82));
      z-index: -1;
    }
    .cta-section h2 {
      font-size: 34px;
      font-weight: 800;
      margin-bottom: 12px;
      letter-spacing: 1px;
    }
    .cta-section p {
      font-size: 16px;
      color: var(--text-body);
      max-width: 620px;
      margin: 0 auto 30px;
    }
    .cta-buttons {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* ============ Footer ============ */
    .site-footer {
      background: var(--bg-deep);
      border-top: 1px solid rgba(34, 48, 73, 0.6);
      padding: 64px 0 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1fr;
      gap: 38px;
      padding-bottom: 44px;
      border-bottom: 1px solid rgba(34, 48, 73, 0.4);
    }
    .footer-brand p {
      color: var(--text-light);
      font-size: 14px;
      line-height: 1.75;
      margin-top: 16px;
      max-width: 320px;
    }
    .footer-col h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul a {
      font-size: 14px;
      color: var(--text-light);
      transition: color 0.2s ease;
    }
    .footer-col ul a:hover {
      color: var(--primary);
    }
    .footer-contact li {
      color: var(--text-light);
      font-size: 14px;
      display: flex;
      align-items: flex-start;
      gap: 8px;
    }
    .footer-contact .icon {
      color: var(--primary);
      font-style: normal;
    }
    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 22px 0;
      font-size: 13px;
      color: var(--text-faint);
    }

    /* ============ 响应式 ============ */
    @media (max-width: 1024px) {
      .sub-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .data-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .reading-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .flow-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-step::after {
        display: none;
      }
      .news-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      :root {
        --space-section: 52px;
      }
      .header-search {
        display: none;
      }
      .nav-toggle {
        display: flex;
      }
      .header-nav {
        display: none;
        border-top: 1px solid rgba(34, 48, 73, 0.5);
      }
      .header-nav.nav-open {
        display: block;
      }
      .nav-tabs {
        flex-direction: column;
        align-items: stretch;
        padding: 8px 0;
      }
      .nav-tabs li a {
        border-radius: 10px;
        border-bottom: none;
        border-left: 3px solid transparent;
        padding: 14px 20px;
      }
      .nav-tabs li.active a {
        border-left-color: var(--primary);
        border-bottom-color: transparent;
      }
      .banner-content h1 {
        font-size: 32px;
      }
      .banner-stats {
        gap: 22px;
      }
      .banner-stats .stat-num {
        font-size: 22px;
      }
      .category-banner {
        min-height: 320px;
        padding: 60px 0;
      }
      .data-grid {
        grid-template-columns: 1fr;
      }
      .reading-grid {
        grid-template-columns: 1fr;
      }
      .section-head {
        flex-direction: column;
        align-items: flex-start;
      }
      .news-item {
        gap: 12px;
        padding: 14px 16px;
      }
    }

    @media (max-width: 520px) {
      :root {
        --space-section: 44px;
      }
      .container {
        padding: 0 16px;
      }
      .header-top-inner {
        padding: 12px 16px;
      }
      .logo-text {
        font-size: 16px;
      }
      .logo-mark {
        width: 36px;
        height: 36px;
        font-size: 17px;
        border-radius: 10px;
      }
      .header-cta {
        display: none;
      }
      .banner-content h1 {
        font-size: 26px;
      }
      .banner-content p {
        font-size: 14px;
      }
      .sub-grid {
        grid-template-columns: 1fr;
      }
      .flow-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .cta-section h2 {
        font-size: 26px;
      }
      .data-card {
        padding: 20px;
      }
    }

/* roulang page: article */
:root {
    --primary: #0a66c2;
    --primary-deep: #084d94;
    --primary-light: #e8f2ff;
    --accent: #00c4cc;
    --bg: #f5f7fb;
    --dark: #0b1220;
    --dark-2: #111c31;
    --text: #1e293b;
    --text-soft: #475569;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --white: #ffffff;
    --radius-lg: 20px;
    --radius: 14px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(10, 102, 194, 0.08);
    --shadow-lg: 0 16px 48px rgba(10, 102, 194, 0.14);
    --transition: all 0.3s ease;
    --container: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); box-shadow: 0 2px 10px rgba(15,23,42,0.04); }
.header-top-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand-logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-mark { width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; font-size: 20px; box-shadow: 0 4px 12px rgba(10,102,194,0.3); }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; font-weight: 700; font-size: 17px; color: var(--text); }
.logo-text small { font-size: 10px; letter-spacing: 0.18em; color: var(--text-light); font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.header-search { display: flex; align-items: center; background: var(--bg); border: 1px solid var(--border); border-radius: 999px; padding: 8px 18px; width: 240px; transition: var(--transition); }
.header-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(10,102,194,0.12); }
.header-search input { border: none; background: none; outline: none; font-size: 14px; color: var(--text); width: 100%; }
.search-icon { font-size: 14px; color: var(--text-light); }
.header-cta { background: linear-gradient(135deg, var(--primary), var(--primary-deep)); color: #fff; font-size: 14px; font-weight: 600; padding: 8px 22px; border-radius: 999px; box-shadow: 0 4px 14px rgba(10,102,194,0.25); transition: var(--transition); white-space: nowrap; }
.header-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(10,102,194,0.35); color: #fff; }
.nav-toggle { display: none; width: 40px; height: 40px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; border-radius: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }
.nav-toggle:hover { background: var(--bg); }
.header-nav { border-top: 1px solid var(--border); background: #fff; }
.nav-tabs { display: flex; gap: 8px; padding: 10px 0; }
.nav-tabs li a { display: inline-block; padding: 8px 24px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--text-soft); transition: var(--transition); }
.nav-tabs li a:hover { background: var(--primary-light); color: var(--primary); }
.nav-tabs li.active a { background: linear-gradient(135deg, var(--primary), var(--primary-deep)); color: #fff; box-shadow: 0 4px 14px rgba(10,102,194,0.3); }

/* Page Banner */
.page-banner { background-size: cover; background-position: center; position: relative; padding: 90px 0 70px; }
.page-banner::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(11,18,32,0.93) 35%, rgba(11,18,32,0.7)); }
.page-banner .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 13px; color: rgba(255,255,255,0.65); margin-bottom: 20px; flex-wrap: wrap; }
.breadcrumb a { color: rgba(255,255,255,0.85); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: rgba(255,255,255,0.35); }
.page-banner h1 { font-size: clamp(26px, 4vw, 42px); font-weight: 800; color: #fff; line-height: 1.3; max-width: 860px; margin-bottom: 18px; text-shadow: 0 2px 12px rgba(0,0,0,0.3); }
.page-banner .meta { display: flex; gap: 14px; font-size: 14px; color: rgba(255,255,255,0.88); flex-wrap: wrap; align-items: center; }
.page-banner .meta .badge { background: rgba(0,196,204,0.22); color: var(--accent); padding: 5px 16px; border-radius: 999px; font-weight: 600; font-size: 13px; border: 1px solid rgba(0,196,204,0.25); }
.page-banner .meta .meta-time { color: rgba(255,255,255,0.75); }

/* Article Section */
.article-section { padding: 60px 0 70px; }
.article-card { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; max-width: 920px; margin: 0 auto; }
.article-cover { position: relative; }
.article-cover img { width: 100%; height: 400px; object-fit: cover; }
.article-cover::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(0,0,0,0.25)); }
.article-body { padding: 48px 60px; }
.article-body h2 { font-size: 26px; margin: 36px 0 16px; padding-bottom: 14px; border-bottom: 2px solid var(--primary-light); line-height: 1.4; color: var(--text); }
.article-body h3 { font-size: 20px; margin: 28px 0 12px; color: var(--primary-deep); line-height: 1.4; }
.article-body h4 { font-size: 17px; margin: 22px 0 10px; color: var(--text); line-height: 1.5; }
.article-body p { margin-bottom: 18px; color: var(--text-soft); font-size: 16px; line-height: 1.9; }
.article-body a { color: var(--primary); border-bottom: 1px solid transparent; }
.article-body a:hover { border-bottom-color: var(--primary); }
.article-body ul, .article-body ol { margin: 16px 0 24px; padding-left: 24px; }
.article-body ul li { position: relative; padding-left: 8px; margin-bottom: 10px; color: var(--text-soft); line-height: 1.8; }
.article-body ul li::before { content: ''; position: absolute; left: -18px; top: 12px; width: 7px; height: 7px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent)); }
.article-body ol { list-style: none; counter-reset: item; }
.article-body ol li { counter-increment: item; margin-bottom: 10px; color: var(--text-soft); padding-left: 6px; line-height: 1.8; }
.article-body ol li::before { content: counter(item); background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 700; width: 24px; height: 24px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; margin-right: 10px; margin-left: -24px; }
.article-body blockquote { border-left: 4px solid var(--accent); background: var(--primary-light); padding: 22px 28px; border-radius: 0 var(--radius) var(--radius) 0; margin: 28px 0; color: var(--primary-deep); font-size: 16px; line-height: 1.8; }
.article-body blockquote p { margin-bottom: 0; color: var(--primary-deep); }
.article-body img { border-radius: var(--radius); margin: 28px 0; box-shadow: var(--shadow); }
.article-body pre { background: var(--dark); color: #e2e8f0; padding: 22px 26px; border-radius: var(--radius); overflow-x: auto; margin: 28px 0; font-size: 14px; line-height: 1.8; }
.article-body pre code { font-family: 'JetBrains Mono', Consolas, monospace; }
.article-body table { width: 100%; border-collapse: collapse; margin: 28px 0; border-radius: var(--radius); overflow: hidden; }
.article-body th, .article-body td { padding: 14px 16px; border: 1px solid var(--border); text-align: left; font-size: 15px; }
.article-body th { background: var(--bg); font-weight: 600; color: var(--text); }
.article-body td { color: var(--text-soft); }
.article-body hr { border: none; border-top: 1px solid var(--border); margin: 36px 0; }
.article-body strong { color: var(--text); font-weight: 700; }

/* Article Footer */
.article-footer { padding: 28px 60px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.tag-list { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { background: var(--primary-light); color: var(--primary); font-size: 13px; padding: 6px 16px; border-radius: 999px; font-weight: 500; transition: var(--transition); }
.tag:hover { background: var(--primary); color: #fff; }
.article-share { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-light); }
.article-share a { display: inline-block; padding: 6px 18px; background: var(--bg); border-radius: 999px; font-size: 13px; color: var(--text-soft); transition: var(--transition); }
.article-share a:hover { background: var(--primary-light); color: var(--primary); }

/* Not Found */
.not-found-box { max-width: 600px; margin: 0 auto; text-align: center; background: #fff; border-radius: var(--radius-lg); padding: 80px 50px; box-shadow: var(--shadow); }
.not-found-icon { width: 76px; height: 76px; border-radius: 50%; background: linear-gradient(135deg, #f43f5e, #fb7185); color: #fff; font-size: 38px; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 28px; box-shadow: 0 8px 24px rgba(244,63,94,0.3); }
.not-found-box h2 { font-size: 28px; margin-bottom: 14px; color: var(--text); }
.not-found-box p { color: var(--text-light); margin-bottom: 32px; font-size: 16px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 32px; border-radius: 999px; font-size: 14px; font-weight: 600; transition: var(--transition); gap: 8px; border: none; cursor: pointer; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-deep)); color: #fff; box-shadow: 0 4px 14px rgba(10,102,194,0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(10,102,194,0.4); color: #fff; }
.btn-outline { border: 1px solid var(--border); color: var(--text-soft); background: #fff; }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.btn-light { background: #fff; color: var(--primary-deep); box-shadow: 0 4px 18px rgba(0,0,0,0.15); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.2); color: var(--primary); }

/* Related Section */
.related-section { padding: 70px 0 80px; background: #fff; border-top: 1px solid var(--border); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 40px; gap: 16px; }
.section-head .head-left { max-width: 600px; }
.section-head .title { font-size: clamp(24px, 3vw, 32px); font-weight: 800; color: var(--text); line-height: 1.3; }
.section-head .subtitle { color: var(--text-light); font-size: 14px; margin-top: 6px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.related-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; background: #fff; }
.card-cover { position: relative; height: 190px; overflow: hidden; flex-shrink: 0; }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .card-cover img { transform: scale(1.05); }
.cover-badge { position: absolute; top: 14px; left: 14px; background: rgba(255,255,255,0.92); color: var(--primary); font-size: 12px; font-weight: 600; padding: 4px 16px; border-radius: 999px; backdrop-filter: blur(6px); box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.card-body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; line-height: 1.5; color: var(--text); }
.card-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 18px; flex: 1; }
.card-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; transition: var(--transition); }
.card-link:hover { gap: 12px; color: var(--primary-deep); }
.card-link .arrow { font-size: 16px; line-height: 1; }

/* CTA Section */
.cta-section { position: relative; padding: 85px 0; background: linear-gradient(135deg, var(--dark), #151d33); overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: -60%; right: -15%; width: 55%; height: 220%; background: radial-gradient(circle, rgba(0,196,204,0.16) 0%, transparent 60%); pointer-events: none; }
.cta-section::after { content: ''; position: absolute; bottom: -80%; left: -10%; width: 45%; height: 180%; background: radial-gradient(circle, rgba(10,102,194,0.14) 0%, transparent 60%); pointer-events: none; }
.cta-section .container { position: relative; z-index: 2; text-align: center; }
.cta-section h2 { color: #fff; font-size: clamp(26px, 3.5vw, 38px); font-weight: 800; margin-bottom: 16px; }
.cta-section .cta-desc { color: rgba(255,255,255,0.7); max-width: 580px; margin: 0 auto 36px; font-size: 16px; line-height: 1.8; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* Footer */
.site-footer { background: var(--dark); color: rgba(255,255,255,0.7); padding: 70px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; }
.footer-brand .brand-logo .logo-text { color: #fff; }
.footer-brand .brand-logo small { color: rgba(255,255,255,0.4); }
.footer-brand p { margin-top: 18px; font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.55); }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 22px; position: relative; padding-bottom: 12px; }
.footer-col h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--accent); border-radius: 2px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 14px; color: rgba(255,255,255,0.55); transition: var(--transition); display: inline-block; }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,0.55); line-height: 1.6; }
.footer-contact .icon { width: 30px; height: 30px; background: rgba(255,255,255,0.08); border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 13px; color: var(--accent); flex-shrink: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 26px 0; display: flex; justify-content: space-between; font-size: 13px; color: rgba(255,255,255,0.4); gap: 12px; flex-wrap: wrap; }

/* Responsive */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .article-body { padding: 40px 36px; }
    .article-footer { padding: 24px 36px; }
    .related-grid { gap: 20px; }
    .card-cover { height: 170px; }
}
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .header-search { display: none; }
    .header-cta { display: none; }
    .nav-toggle { display: flex; }
    .header-nav { display: none; }
    .header-nav.open { display: block; position: absolute; top: 100%; left: 0; right: 0; background: #fff; border-top: 1px solid var(--border); box-shadow: 0 16px 40px rgba(15,23,42,0.12); border-bottom: 1px solid var(--border); max-height: 420px; overflow-y: auto; }
    .nav-tabs { flex-direction: column; padding: 16px; gap: 4px; }
    .nav-tabs li a { display: block; padding: 14px 18px; border-radius: 10px; font-size: 15px; }
    .page-banner { padding: 62px 0 52px; }
    .page-banner h1 { font-size: 24px; }
    .article-section { padding: 42px 0 50px; }
    .article-cover img { height: 230px; }
    .article-body { padding: 28px 22px; }
    .article-footer { padding: 22px; flex-direction: column; align-items: flex-start; gap: 18px; }
    .related-grid { grid-template-columns: 1fr; }
    .card-cover { height: 200px; }
    .section-head { flex-direction: column; align-items: flex-start; gap: 8px; margin-bottom: 28px; }
    .cta-buttons { flex-direction: column; align-items: center; gap: 12px; }
    .cta-buttons .btn { width: 100%; max-width: 320px; }
    .footer-grid { grid-template-columns: 1fr; gap: 36px; padding-bottom: 40px; }
    .footer-bottom { flex-direction: column; text-align: center; gap: 8px; }
    .not-found-box { padding: 60px 26px; }
}
@media (max-width: 520px) {
    .header-top-inner { height: 64px; gap: 10px; }
    .logo-text { font-size: 15px; }
    .logo-text small { font-size: 9px; }
    .logo-mark { width: 36px; height: 36px; font-size: 18px; border-radius: 9px; }
    .page-banner { padding: 50px 0 44px; }
    .page-banner h1 { font-size: 21px; line-height: 1.4; }
    .page-banner .meta { font-size: 13px; gap: 10px; }
    .article-cover img { height: 190px; }
    .article-body { padding: 24px 18px; }
    .article-body p { font-size: 15px; line-height: 1.85; }
    .article-body h2 { font-size: 21px; }
    .article-body blockquote { padding: 18px 20px; font-size: 15px; }
    .cta-section { padding: 60px 0; }
    .cta-section .cta-desc { font-size: 15px; }
}
@media (min-width: 769px) {
    .nav-toggle { display: none; }
}

/* roulang page: category2 */
:root{
  --primary:#0b1d3a;
  --primary-light:#13294d;
  --primary-dark:#070f1f;
  --accent:#e8a33d;
  --accent-hover:#d4922a;
  --blue:#3b82f6;
  --bg:#f5f7fb;
  --card:#ffffff;
  --text:#1e293b;
  --text-light:#64748b;
  --border:#e2e8f0;
  --radius:14px;
  --radius-sm:8px;
  --shadow:0 4px 20px rgba(11,29,58,.08);
  --shadow-lg:0 12px 40px rgba(11,29,58,.12);
  --tag-bg:#eef2ff;
  --tag-color:#4f46e5;
  --font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font-family);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius)}
a{color:inherit;text-decoration:none;transition:all .25s ease}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:var(--primary);box-shadow:0 4px 20px rgba(0,0,0,.28)}
.header-top{background:var(--primary)}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:20px;padding-top:12px;padding-bottom:12px}
.brand-logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{display:flex;align-items:center;justify-content:center;width:42px;height:42px;background:var(--accent);color:var(--primary);font-size:22px;font-weight:800;border-radius:10px;box-shadow:0 4px 14px rgba(232,163,61,.35)}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text .logo-name{font-size:18px;font-weight:700;color:#fff;letter-spacing:.5px}
.logo-text small{font-size:10px;color:rgba(255,255,255,.6);letter-spacing:1.2px;font-weight:600}
.header-actions{display:flex;align-items:center;gap:14px}
.header-search{position:relative;display:flex;align-items:center}
.header-search input{width:220px;height:40px;padding:0 40px 0 16px;border:none;border-radius:20px;background:rgba(255,255,255,.12);color:#fff;font-size:14px;outline:none;transition:background .25s}
.header-search input::placeholder{color:rgba(255,255,255,.55)}
.header-search input:focus{background:rgba(255,255,255,.2);box-shadow:0 0 0 3px rgba(232,163,61,.25)}
.search-icon{position:absolute;right:14px;font-size:14px;color:rgba(255,255,255,.7);pointer-events:none}
.header-cta{display:inline-flex;align-items:center;height:40px;padding:0 20px;background:var(--accent);color:var(--primary);font-size:14px;font-weight:700;border-radius:20px;transition:all .25s ease}
.header-cta:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 6px 18px rgba(232,163,61,.35)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;border-radius:10px;background:rgba(255,255,255,.1);padding:10px}
.nav-toggle span{display:block;height:2px;width:20px;background:#fff;border-radius:2px;transition:all .3s ease}
.header-nav{background:var(--primary-light);border-top:1px solid rgba(255,255,255,.07)}
.nav-tabs{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0;overflow-x:auto;scrollbar-width:none}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tabs li{flex-shrink:0}
.nav-tabs a{display:block;padding:12px 22px;font-size:15px;font-weight:600;color:rgba(255,255,255,.78);border-radius:0;border-bottom:2px solid transparent;transition:all .25s ease;white-space:nowrap}
.nav-tabs a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-tabs li.active a{color:#fff;border-bottom-color:var(--accent);background:rgba(232,163,61,.1)}
@media(max-width:768px){
  .header-top-inner{flex-wrap:wrap;gap:10px;padding-top:10px;padding-bottom:10px}
  .header-search{order:3;width:100%}
  .header-search input{width:100%;background:rgba(255,255,255,.12)}
  .header-cta{display:none}
  .nav-toggle{display:flex}
  .header-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--primary-light);box-shadow:0 12px 30px rgba(0,0,0,.3)}
  .header-nav.open{display:block}
  .nav-tabs{flex-direction:column;padding:10px 20px;gap:0}
  .nav-tabs a{padding:14px 12px;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-tabs li.active a{border-bottom:1px solid rgba(255,255,255,.08);border-left:3px solid var(--accent);background:rgba(232,163,61,.08)}
}

/* Main Page Hero */
.page-hero{position:relative;background:linear-gradient(135deg,rgba(7,15,31,.92),rgba(11,29,58,.82)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff;padding:80px 0 90px;overflow:hidden}
.page-hero::after{content:"";position:absolute;bottom:0;left:0;right:0;height:60px;background:linear-gradient(transparent,var(--bg))}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:18px}
.breadcrumb a{color:rgba(255,255,255,.7)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:rgba(255,255,255,.4)}
.page-hero h1{font-size:44px;line-height:1.25;margin:0 0 16px;font-weight:800;letter-spacing:.5px}
.page-hero h1 .accent-text{color:var(--accent)}
.page-hero .lead{max-width:680px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);margin:0 0 32px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 28px;border-radius:24px;font-size:15px;font-weight:600;transition:all .25s ease;border:1px solid transparent}
.btn-primary{background:var(--accent);color:var(--primary)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(232,163,61,.4)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6);transform:translateY(-2px)}

/* Sections */
.section{padding:84px 0}
.section-alt{background:var(--card)}
.section-head{text-align:center;max-width:680px;margin:0 auto 52px}
.section-tag{display:inline-block;padding:4px 16px;background:var(--tag-bg);color:var(--tag-color);border-radius:20px;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:14px}
.section-head h2{font-size:34px;line-height:1.3;margin:0 0 14px;color:var(--primary);font-weight:800}
.section-head p{font-size:15px;color:var(--text-light);line-height:1.8;margin:0}

/* Category cards */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cat-card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);transition:all .3s ease}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(232,163,61,.4)}
.cat-card .card-media{position:relative;height:170px;overflow:hidden}
.cat-card .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cat-card:hover .card-media img{transform:scale(1.05)}
.cat-card .media-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(180deg,transparent 50%,rgba(7,15,31,.55))}
.cat-card .card-tag{position:absolute;top:14px;left:14px;padding:4px 14px;background:rgba(11,29,58,.82);color:#fff;font-size:12px;border-radius:16px;font-weight:600;backdrop-filter:blur(4px)}
.cat-card .card-body{padding:22px 20px 26px}
.cat-card .card-body h3{font-size:19px;margin:0 0 10px;color:var(--primary);font-weight:700}
.cat-card .card-body p{font-size:14px;color:var(--text-light);line-height:1.7;margin:0}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:700;color:var(--blue)}
.card-link:hover{color:var(--primary)}
.card-link .arrow{transition:transform .25s ease}
.card-link:hover .arrow{transform:translateX(4px)}

/* Rules */
.rules-section{background:var(--card)}
.rules-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.rule-card{display:flex;flex-direction:column;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);background:var(--card);box-shadow:var(--shadow);transition:all .3s ease}
.rule-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.rule-card .rule-media{position:relative;height:200px;overflow:hidden}
.rule-card .rule-media img{width:100%;height:100%;object-fit:cover}
.rule-card .rule-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 52%,rgba(7,15,31,.5))}
.rule-card .rule-body{padding:28px}
.rule-card .rule-body h3{font-size:22px;margin:0 0 14px;color:var(--primary)}
.rule-card .rule-body .rule-desc{font-size:14px;color:var(--text-light);margin:0 0 18px;line-height:1.8}
.rule-list{list-style:none;margin:0;padding:0}
.rule-list li{position:relative;padding:8px 0 8px 26px;font-size:14px;color:var(--text);border-bottom:1px dashed var(--border)}
.rule-list li:last-child{border-bottom:none}
.rule-list li::before{content:"✓";position:absolute;left:0;top:8px;color:var(--accent);font-weight:800;font-size:15px}
.rule-label{display:inline-block;padding:3px 14px;background:var(--tag-bg);color:var(--tag-color);font-size:12px;font-weight:700;border-radius:14px;margin-bottom:12px}

/* Steps */
.steps-section{position:relative;background:linear-gradient(135deg,rgba(7,15,31,.94),rgba(11,29,58,.88)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;color:#fff}
.steps-section .section-tag{background:rgba(232,163,61,.22);color:var(--accent)}
.steps-section .section-head h2{color:#fff}
.steps-section .section-head p{color:rgba(255,255,255,.72)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-card{background:rgba(255,255,255,.07);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:30px 24px;text-align:left;transition:all .3s ease}
.step-card:hover{background:rgba(255,255,255,.12);transform:translateY(-5px)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:var(--accent);color:var(--primary);font-size:18px;font-weight:800;margin-bottom:18px}
.step-card h3{font-size:18px;color:#fff;margin:0 0 10px}
.step-card p{font-size:14px;color:rgba(255,255,255,.7);line-height:1.7;margin:0}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:center;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:38px 20px;box-shadow:var(--shadow);transition:all .3s ease}
.stat-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.stat-value{font-size:42px;font-weight:800;color:var(--primary);line-height:1.2}
.stat-value span{font-size:22px;color:var(--accent)}
.stat-label{font-size:14px;color:var(--text-light);margin-top:10px}

/* News list */
.news-section{background:var(--card)}
.news-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.news-item{display:flex;align-items:flex-start;gap:20px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:22px 26px;transition:all .3s ease}
.news-item:hover{background:var(--card);box-shadow:var(--shadow-lg);border-color:rgba(232,163,61,.4);transform:translateX(6px)}
.news-date{flex-shrink:0;display:flex;flex-direction:column;align-items:center;justify-content:center;width:70px;min-height:62px;background:var(--primary);color:#fff;border-radius:12px;text-align:center}
.news-date .d{font-size:20px;font-weight:800;line-height:1}
.news-date .m{font-size:12px;color:rgba(255,255,255,.7)}
.news-content h3{font-size:17px;margin:0 0 6px;color:var(--primary);font-weight:700;font-size:18px}
.news-content h3 a:hover{color:var(--accent)}
.news-content p{font-size:14px;color:var(--text-light);margin:0;line-height:1.7}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:10px;font-size:12px;color:var(--text-light)}

/* FAQ */
.faq-grid{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:all .3s ease}
.faq-item:hover{border-color:rgba(232,163,61,.35)}
.faq-item details>summary{list-style:none;padding:22px 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;font-size:16px;font-weight:600;color:var(--primary)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .faq-icon{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--tag-bg);color:var(--tag-color);display:flex;align-items:center;justify-content:center;font-size:18px;transition:transform .3s ease}
.faq-item details[open] summary .faq-icon{transform:rotate(45deg)}
.faq-item details[open] summary{background:rgba(232,163,61,.05)}
.faq-answer{padding:0 26px 22px;font-size:14px;color:var(--text-light);line-height:1.8;border-top:1px dashed var(--border);margin-top:6px;padding-top:16px}

/* CTA */
.cta-section{padding:80px 0}
.cta-box{position:relative;background:linear-gradient(135deg,var(--primary),var(--primary-light)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;border-radius:20px;padding:60px 48px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;box-shadow:var(--shadow-lg);overflow:hidden}
.cta-box::after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(7,15,31,.55)}
.cta-content{position:relative;z-index:1;max-width:600px}
.cta-content h2{font-size:28px;margin:0 0 12px;font-weight:800}
.cta-content p{font-size:15px;color:rgba(255,255,255,.8);line-height:1.8;margin:0}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.4)}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12)}

/* Footer */
.site-footer{background:var(--primary);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand .brand-logo{margin-bottom:18px}
.footer-brand .logo-text .logo-name{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.58);max-width:300px;margin:0}
.footer-col h4{font-size:15px;color:#fff;font-weight:700;margin:0 0 18px;letter-spacing:.5px}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.62);transition:all .25s ease}
.footer-col ul li a:hover{color:var(--accent);padding-left:4px}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.62)}
.footer-contact .icon{color:var(--accent);font-style:normal}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:rgba(255,255,255,.45)}

/* Responsive */
@media(max-width:1024px){
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .rules-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .page-hero h1{font-size:38px}
}
@media(max-width:768px){
  .section{padding:60px 0}
  .page-hero{padding:60px 0 70px}
  .page-hero h1{font-size:30px}
  .hero-actions .btn{width:100%}
  .cta-box{padding:40px 24px}
  .cta-actions .btn{width:100%}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .header-top-inner{min-height:60px}
  .logo-text .logo-name{font-size:16px}
  .cat-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat-value{font-size:32px}
  .steps-grid{grid-template-columns:1fr}
  .news-item{flex-direction:column;gap:12px;padding:18px}
  .news-date{flex-direction:row;width:auto;gap:8px;min-height:auto;padding:6px 14px}
  .footer-grid{grid-template-columns:1fr}
  .faq-item details>summary{font-size:15px;padding:18px 16px}
  .faq-answer{padding:0 16px 18px}
}