/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --bg-primary: #0B1220;
  --bg-secondary: #111C2E;
  --bg-deep: #070C16;
  --border-glass: rgba(255,255,255,.08);
  --border-strong: rgba(255,255,255,.14);
  --text-primary: #F4F7FB;
  --text-secondary: #8CA2C0;
  --text-dim: #5A6F8C;
  --accent: #B6FF3A;
  --accent-hover: #C6FF55;
  --accent-glow: rgba(182,255,58,.15);
  --steel-blue: #1E2C42;
  --success: #3DDC84;
  --danger: #FF4D4F;
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-badge: 999px;
  --shadow-card: 0 0 0 1px rgba(255,255,255,.03), 0 8px 24px rgba(0,0,0,.3);
  --shadow-glow: 0 0 24px rgba(182,255,58,.15);
  --transition: 0.2s ease;
  --header-h: 72px;
  --container-w: 1200px;
  --section-pad: 96px 0;
  --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

/* ============ 基础 Reset ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
button { font-family: inherit; cursor: pointer; border: none; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
p { color: var(--text-secondary); }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.row { max-width: var(--container-w); margin: 0 auto; padding: 0 24px; }
.row .columns { padding: 0 12px; }

section { padding: var(--section-pad); position: relative; }

.section-header { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-header h2 { font-size: 38px; font-weight: 800; margin-bottom: 16px; letter-spacing: -0.02em; }
.section-header p { font-size: 16px; line-height: 1.8; }
.section-header .section-tag {
  display: inline-block;
  background: rgba(182,255,58,.08);
  border: 1px solid rgba(182,255,58,.2);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: var(--radius-badge);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  transition: all var(--transition);
  border: none;
  letter-spacing: 0.02em;
  white-space: nowrap;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(182,255,58,.2);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--bg-primary);
  box-shadow: 0 0 32px rgba(182,255,58,.4);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 12px rgba(182,255,58,.25); }
.btn-ghost {
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.btn-ghost:active { transform: translateY(0); }
.btn-block { width: 100%; }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ============ 顶部导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(11,18,32,.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.05);
  z-index: 1000;
  transition: background var(--transition);
}
.site-header.scrolled { background: rgba(11,18,32,.95); }
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 18px;
  color: var(--bg-primary);
  flex-shrink: 0;
}
.brand-text {
  font-size: 19px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.brand-text span { color: var(--accent); }
.header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}
.header-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 8px;
  transition: all var(--transition);
  position: relative;
}
.header-nav a:hover { color: var(--text-primary); background: rgba(255,255,255,.05); }
.header-nav a.active { color: var(--accent); }
.header-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.header-cta {
  flex-shrink: 0;
  font-size: 14px;
  padding: 10px 22px;
}

/* ============ 移动底部 Tab ============ */
.mobile-tabs {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(11,18,32,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(255,255,255,.08);
  z-index: 999;
  box-shadow: 0 -8px 30px rgba(0,0,0,.3);
  padding-bottom: env(safe-area-inset-bottom);
}
.mobile-tabs-inner {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  height: 60px;
}
.mobile-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 11px;
  color: var(--text-secondary);
  transition: color var(--transition);
  padding: 6px 4px;
}
.mobile-tab i { font-size: 18px; }
.mobile-tab span { font-weight: 500; }
.mobile-tab.active { color: var(--accent); }
.mobile-tab.active i { text-shadow: 0 0 12px rgba(182,255,58,.4); }
.mobile-tab:hover { color: var(--text-primary); }
.mobile-tab.active:hover { color: var(--accent); }

/* ============ Hero 首屏 ============ */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 72px) 0 72px;
  background:
    radial-gradient(ellipse at 85% 15%, rgba(30,44,66,.5), transparent 55%),
    radial-gradient(ellipse at 10% 90%, rgba(182,255,58,.04), transparent 45%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat,
    var(--bg-primary);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(11,18,32,.88) 0%, rgba(11,18,32,.72) 50%, var(--bg-primary) 100%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  top: 110px;
  right: -80px;
  width: 320px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(182,255,58,.3), transparent);
  transform: rotate(-8deg);
  pointer-events: none;
}
.hero .row { position: relative; z-index: 2; }
.hero-content { padding-top: 12px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(182,255,58,.1);
  border: 1px solid rgba(182,255,58,.25);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: var(--radius-badge);
  margin-bottom: 20px;
  letter-spacing: 0.03em;
}
.hero-badge i { font-size: 12px; }
.hero h1 {
  font-size: 46px;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  max-width: 620px;
}
.hero h1 .highlight {
  color: var(--accent);
  position: relative;
}
.hero-sub {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 34px;
}
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-visual img {
  border-radius: 18px;
  box-shadow: var(--shadow-card), 0 20px 60px rgba(0,0,0,.4);
  border: 1px solid rgba(255,255,255,.08);
  width: 100%;
}
.hero-glass-card {
  position: absolute;
  bottom: 24px;
  right: 16px;
  width: 220px;
  background: rgba(17,28,46,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 12px;
  padding: 14px 18px;
  box-shadow: 0 8px 30px rgba(0,0,0,.35);
  font-size: 13px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero-glass-card .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
  box-shadow: 0 0 8px rgba(61,220,132,.5);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .5; }
}
.hero-glass-card .glass-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-glass-card .glass-text small {
  font-size: 11px;
  color: var(--text-dim);
}
.hero-stats {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.06);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 640px;
}
.stat-item { display: flex; flex-direction: column; gap: 4px; }
.stat-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}
.stat-num em { font-style: normal; color: var(--accent); }
.stat-label { font-size: 13px; color: var(--text-dim); }

/* ============ 功能分组 ============ */
.features { background: var(--bg-primary); }
.features-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.feature-card {
  position: relative;
  background: rgba(17,28,46,.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 40px 36px;
  transition: all var(--transition);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  overflow: hidden;
}
.feature-card:nth-child(even) { transform: translateY(24px); }
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(182,255,58,.25);
  box-shadow: var(--shadow-glow);
  background: rgba(17,28,46,.85);
}
.feature-card:nth-child(even):hover { transform: translateY(20px); }
.feature-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
}
.feature-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  opacity: .85;
}
.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--steel-blue);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 20px;
  transition: all var(--transition);
}
.feature-card:hover .feature-icon { background: rgba(182,255,58,.15); box-shadow: 0 0 18px var(--accent-glow); }
.feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; }
.feature-card p { font-size: 14px; line-height: 1.75; color: var(--text-secondary); }

/* ============ 使用场景 ============ */
.scenarios { background: var(--bg-secondary); }
.scenario-row { display: flex; align-items: center; gap: 64px; margin-bottom: 72px; }
.scenario-row:last-child { margin-bottom: 0; }
.scenario-row:nth-child(odd) .scenario-image { order: 2; }
.scenario-row:nth-child(odd) .scenario-body { order: 1; }
.scenario-image {
  flex: 1;
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-card);
}
.scenario-image img { width: 100%; aspect-ratio: 16/10; object-fit: cover; transition: transform .5s ease; }
.scenario-image:hover img { transform: scale(1.03); }
.scenario-image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(transparent, rgba(11,18,32,.7));
}
.scenario-body { flex: 1; }
.scenario-badge {
  display: inline-block;
  background: rgba(182,255,58,.1);
  border: 1px solid rgba(182,255,58,.2);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-badge);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}
.scenario-body h3 { font-size: 24px; font-weight: 700; margin-bottom: 14px; line-height: 1.4; }
.scenario-body p { font-size: 15px; line-height: 1.8; margin-bottom: 20px; }
.scenario-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}
.scenario-more:hover { gap: 12px; color: var(--accent-hover); }

/* ============ 成功案例 ============ */
.cases { background: var(--bg-primary); }
.cases-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
}
.case-card {
  background: rgba(17,28,46,.65);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all var(--transition);
  position: relative;
}
.case-card:hover {
  transform: translateY(-4px);
  border-color: rgba(182,255,58,.2);
  box-shadow: var(--shadow-glow);
}
.case-card-large { grid-row: span 2; }
.case-img { overflow: hidden; }
.case-img img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform .5s ease; }
.case-card:hover .case-img img { transform: scale(1.05); }
.case-body { padding: 24px 26px; }
.case-body h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.case-body p { font-size: 13px; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.7; }
.case-result {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.case-result .num { font-size: 30px; font-weight: 800; color: var(--accent); }
.case-result .label { font-size: 13px; color: var(--text-dim); }
.case-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-top: 10px;
  transition: gap var(--transition);
}
.case-link:hover { gap: 12px; }

/* ============ 价格方案 ============ */
.plans { background: var(--bg-secondary); }
.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.plan-card {
  background: rgba(17,28,46,.7);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 42px 34px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition);
}
.plan-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,.14); }
.plan-card.featured {
  background: rgba(17,28,46,.9);
  border: 1px solid rgba(182,255,58,.35);
  box-shadow: 0 0 30px rgba(182,255,58,.1);
}
.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--bg-primary);
  font-size: 12px;
  font-weight: 800;
  padding: 4px 20px;
  border-radius: var(--radius-badge);
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.plan-name { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.plan-desc { font-size: 13px; color: var(--text-dim); margin-bottom: 24px; }
.plan-price { margin-bottom: 28px; }
.plan-price .currency { font-size: 18px; color: var(--text-secondary); vertical-align: top; }
.plan-price .amount { font-size: 42px; font-weight: 900; color: var(--text-primary); line-height: 1; }
.plan-price .period { font-size: 14px; color: var(--text-dim); }
.plan-features { flex: 1; margin-bottom: 30px; display: flex; flex-direction: column; gap: 12px; }
.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}
.plan-features li i { color: var(--accent); font-size: 12px; margin-top: 6px; flex-shrink: 0; }
.plan-features li.disabled { opacity: .4; }
.plan-features li.disabled i { color: var(--text-dim); }
.plan-cta { margin-top: auto; }

/* ============ 最新资讯 ============ */
.news { background: var(--bg-primary); }
.news-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
}
.news-header .section-header {
  text-align: left;
  margin: 0;
  max-width: 500px;
}
.news-header .section-header h2 { font-size: 32px; }
.news-header .section-header p { font-size: 14px; }
.news-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition);
  padding-bottom: 6px;
}
.news-more:hover { color: var(--accent); gap: 12px; }
.news-list { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.news-card {
  background: rgba(17,28,46,.45);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 26px 28px;
  transition: all var(--transition);
  position: relative;
  display: block;
  overflow: hidden;
}
.news-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--transition);
}
.news-card:hover {
  background: rgba(17,28,46,.75);
  border-color: rgba(182,255,58,.15);
  transform: translateY(-3px);
}
.news-card:hover::before { opacity: 1; }
.news-meta-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.news-badge {
  background: rgba(182,255,58,.12);
  border: 1px solid rgba(182,255,58,.2);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 12px;
  border-radius: var(--radius-badge);
  white-space: nowrap;
}
.news-date { font-size: 12px; color: var(--text-dim); }
.news-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.45;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.news-card:hover h3 { color: var(--accent); }
.news-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card-footer { display: flex; align-items: center; justify-content: space-between; }
.news-read {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: rgba(17,28,46,.3);
  border: 1px dashed rgba(255,255,255,.1);
  border-radius: var(--radius-card);
}
.news-empty i { font-size: 32px; color: var(--text-dim); margin-bottom: 12px; }
.news-empty p { color: var(--text-dim); font-size: 14px; }

/* ============ FAQ ============ */
.faq { background: var(--bg-secondary); }
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: rgba(17,28,46,.6);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.active { border-color: rgba(182,255,58,.3); }
.faq-question {
  width: 100%;
  background: transparent;
  padding: 22px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid rgba(182,255,58,.4);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 13px;
  color: var(--accent);
  transition: transform .3s ease, background var(--transition);
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
  color: var(--bg-primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 26px 22px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-secondary);
}

/* ============ CTA 区块 ============ */
.cta-section {
  position: relative;
  text-align: center;
  padding: 100px 0;
  background:
    radial-gradient(ellipse at 50% 100%, rgba(182,255,58,.08), transparent 60%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat,
    var(--bg-deep);
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(7,12,22,.82);
  pointer-events: none;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 40px; font-weight: 900; margin-bottom: 18px; letter-spacing: -0.02em; }
.cta-section p { font-size: 16px; color: var(--text-secondary); max-width: 520px; margin: 0 auto 36px; line-height: 1.8; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ============ 页脚 ============ */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255,255,255,.05);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand h3 .brand-icon { width: 32px; height: 32px; font-size: 15px; }
.footer-brand p { font-size: 13px; color: var(--text-dim); line-height: 1.8; margin-bottom: 16px; }
.footer-domain {
  display: inline-block;
  font-size: 12px;
  color: var(--text-dim);
  background: rgba(255,255,255,.04);
  padding: 4px 12px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,.06);
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li { font-size: 14px; }
.footer-col ul li a { color: var(--text-secondary); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-contact li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-secondary); }
.footer-contact li i { color: var(--accent); width: 16px; text-align: center; font-size: 13px; }
.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-dim);
}

/* ============ 滚动条 ============ */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--steel-blue); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(182,255,58,.4); }

/* ============ 入场动效 ============ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-content { animation: fadeUp .5s ease both; }
.hero-visual { animation: fadeUp .6s ease .1s both; }
.feature-card, .case-card, .plan-card { animation: fadeUp .5s ease both; }

/* ============ Foundation 覆盖 ============ */
.row { max-width: var(--container-w); }
.columns { position: relative; }
a, button, input, textarea { outline: none; }
.button { margin-bottom: 0; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  :root { --section-pad: 72px 0; }
  .header-nav { display: none; }
  .mobile-tabs { display: block; }
  body { padding-bottom: 60px; }
  .site-header .header-cta { font-size: 13px; padding: 9px 16px; }
  .hero h1 { font-size: 38px; }
  .section-header h2 { font-size: 30px; }
  .scenario-row { gap: 32px; }
  .cases-grid { grid-template-columns: 1fr; }
  .case-card-large { grid-row: auto; }
  .plans-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .plan-card.featured { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  :root { --section-pad: 56px 0; --header-h: 60px; }
  .site-header { height: 60px; }
  .header-inner { height: 60px; }
  .brand-icon { width: 32px; height: 32px; font-size: 15px; }
  .brand-text { font-size: 16px; }
  .brand-text .sub { display: none; }
  .hero { padding: calc(60px + 48px) 0 48px; }
  .hero h1 { font-size: 32px; line-height: 1.25; }
  .hero-sub { font-size: 15px; }
  .hero-visual { margin-top: 40px; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 40px; padding-top: 24px; }
  .stat-num { font-size: 24px; }
  .stat-label { font-size: 12px; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card:nth-child(even) { transform: none; }
  .feature-card:nth-child(even):hover { transform: translateY(-4px); }
  .scenario-row { flex-direction: column; gap: 28px; margin-bottom: 48px; }
  .scenario-row:nth-child(odd) .scenario-image { order: 0; }
  .scenario-row:nth-child(odd) .scenario-body { order: 0; }
  .scenario-body h3 { font-size: 20px; }
  .news-list { grid-template-columns: 1fr; }
  .news-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .section-header { margin-bottom: 40px; }
  .cta-section h2 { font-size: 30px; }
  .cta-buttons .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-glass-card { width: 180px; padding: 10px 14px; font-size: 12px; }
  .hero-glass-card .glass-text small { font-size: 10px; }
}

@media (max-width: 640px) {
  .container, .row { padding: 0 16px; }
  .header-cta { display: none; }
  .hero-ctas { flex-direction: column; width: 100%; }
  .hero-ctas .btn { width: 100%; }
  .feature-card { padding: 30px 24px; }
  .plan-card { padding: 32px 24px; }
  .case-body { padding: 20px; }
  .faq-question { font-size: 15px; padding: 18px 20px; }
  .faq-answer-inner { padding: 0 20px 18px; }
  .mobile-tabs { height: 56px; }
  .mobile-tabs-inner { height: 56px; }
  .mobile-tab i { font-size: 16px; }
  .mobile-tab span { font-size: 10px; }
  .hero-glass-card { display: none; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 28px; }
  .section-header h2 { font-size: 24px; }
  .stat-num { font-size: 20px; }
  .stat-item { align-items: center; text-align: center; }
  .news-card h3 { font-size: 15px; }
  .news-excerpt { font-size: 13px; }
}

/* roulang page: category1 */
:root {
  --bg-primary: #0B1220;
  --bg-secondary: #111C2E;
  --bg-dark: #070C16;
  --border-glass: rgba(255,255,255,.08);
  --text-primary: #F4F7FB;
  --text-secondary: #8CA2C0;
  --accent: #B6FF3A;
  --accent-hover: #C6FF55;
  --steel-blue: #1E2C42;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-pill: 999px;
  --shadow-card: 0 0 0 1px rgba(255,255,255,.03), 0 8px 24px rgba(0,0,0,.3);
  --shadow-glow: 0 0 24px rgba(182,255,58,.15);
  --transition: .2s ease;
  --container: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--text-primary); text-decoration: none; transition: var(--transition); }
ul, ol, li { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; }

::selection { background: rgba(182,255,58,.28); }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--steel-blue); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.row { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.row .columns { padding: 0; }
.section { padding: 88px 0; position: relative; }

.section-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
.section-title { font-size: 34px; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.5px; }
.section-subtitle { color: var(--text-secondary); font-size: 16px; line-height: 1.7; }
.section-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(182,255,58,.1);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .4px;
  margin-bottom: 16px;
  border: 1px solid rgba(182,255,58,.2);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  border: 0;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1.2;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
  box-shadow: 0 0 20px rgba(182,255,58,.18);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--bg-primary);
  box-shadow: 0 0 32px rgba(182,255,58,.4);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: rgba(255,255,255,.06);
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,.16);
  backdrop-filter: blur(8px);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 18px rgba(182,255,58,.12);
  transform: translateY(-2px);
}
.btn-outline:active { transform: translateY(0); }

.btn:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,18,32,.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 38px;
  height: 38px;
  background: var(--accent);
  color: var(--bg-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 20px;
  box-shadow: 0 0 16px rgba(182,255,58,.25);
}
.brand-text {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: .3px;
  line-height: 1.2;
}
.brand-text span {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: .5px;
  margin-top: 2px;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  justify-content: center;
}
.header-nav a {
  padding: 9px 14px;
  font-size: 15px;
  color: var(--text-secondary);
  border-radius: 8px;
  font-weight: 500;
  white-space: nowrap;
}
.header-nav a:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,.04);
}
.header-nav a.active {
  color: var(--accent);
  background: rgba(182,255,58,.08);
}
.header-cta { flex-shrink: 0; padding: 11px 24px; font-size: 14px; }

/* Mobile Tabbar */
.mobile-tabbar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: calc(62px + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(11,18,32,.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255,255,255,.08);
}
.tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  text-decoration: none;
}
.tab-item i { font-size: 20px; line-height: 1; }
.tab-item.active {
  color: var(--accent);
  text-shadow: 0 0 14px rgba(182,255,58,.45);
}
.tab-item:hover { color: var(--text-primary); }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex-wrap: wrap;
  justify-content: center;
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span.sep { color: var(--text-secondary); opacity: .5; }
.breadcrumb .current { color: var(--text-primary); font-weight: 500; }

/* Page Hero */
.page-hero {
  position: relative;
  padding: 96px 0 72px;
  background:
    radial-gradient(900px 320px at 85% -10%, rgba(30,44,66,.55), transparent 60%),
    linear-gradient(rgba(11,18,32,.86), rgba(11,18,32,.93)),
    url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  overflow: hidden;
  text-align: center;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -60px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(182,255,58,.08), transparent 65%);
  pointer-events: none;
}
.page-hero h1 {
  font-size: 44px;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1.2;
  max-width: 820px;
  margin: 0 auto 16px;
}
.page-hero h1 .accent { color: var(--accent); }
.page-hero-sub {
  max-width: 640px;
  margin: 0 auto 32px;
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.8;
}
.page-hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Overview */
.login-overview {
  background: transparent;
}
.overview-grid {
  display: flex;
  align-items: center;
  gap: 56px;
  flex-wrap: wrap;
}
.overview-text { flex: 1 1 460px; }
.overview-text .section-title { text-align: left; }
.overview-text .section-subtitle { text-align: left; }
.overview-points { margin-top: 8px; }
.overview-point {
  display: flex;
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--border-glass);
  align-items: flex-start;
}
.overview-point:last-child { border-bottom: 0; }
.overview-point i {
  color: var(--accent);
  font-size: 18px;
  margin-top: 4px;
  width: 22px;
  text-align: center;
}
.overview-point-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 2px;
}
.overview-point-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.overview-media { flex: 1 1 420px; position: relative; }
.overview-media img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-glass);
}

/* Advantages */
.advantages {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
  overflow: hidden;
}
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.advantage-card {
  position: relative;
  background: rgba(17,28,46,.75);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 32px 32px;
  backdrop-filter: blur(12px);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}
.advantage-card:nth-child(even) {
  clip-path: polygon(22px 0, 100% 0, 100% 100%, 0 100%, 0 22px);
  margin-top: 28px;
}
.advantage-card:hover {
  transform: translateY(-3px);
  border-color: rgba(182,255,58,.3);
  box-shadow: 0 0 26px rgba(182,255,58,.12), var(--shadow-card);
}
.advantage-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--accent);
  opacity: .85;
  margin-bottom: 12px;
  display: block;
  font-variant-numeric: tabular-nums;
}
.advantage-icon {
  width: 48px;
  height: 48px;
  background: rgba(182,255,58,.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--accent);
  margin-bottom: 20px;
  border: 1px solid rgba(182,255,58,.16);
}
.advantage-title { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.advantage-desc { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }

/* Process */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
.process-step {
  position: relative;
  background: rgba(17,28,46,.6);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 24px 28px;
  text-align: center;
  transition: var(--transition);
}
.process-step:hover {
  border-color: rgba(182,255,58,.28);
  transform: translateY(-3px);
  box-shadow: 0 0 22px rgba(182,255,58,.1);
}
.step-num {
  width: 48px;
  height: 48px;
  margin: 0 auto 18px;
  background: rgba(182,255,58,.12);
  border: 1px solid rgba(182,255,58,.3);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.step-title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.step-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.65; }
.process-arrow {
  display: none;
}

/* Scenarios */
.scenarios { background: var(--bg-secondary); border-top: 1px solid var(--border-glass); border-bottom: 1px solid var(--border-glass); }
.scenario-row {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}
.scenario-row:last-child { margin-bottom: 0; }
.scenario-row:nth-child(even) .scenario-media { order: 2; }
.scenario-text { flex: 1 1 420px; }
.scenario-badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: rgba(182,255,58,.1);
  border: 1px solid rgba(182,255,58,.2);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 14px;
}
.scenario-title { font-size: 26px; font-weight: 800; margin-bottom: 12px; }
.scenario-desc { color: var(--text-secondary); font-size: 15px; line-height: 1.75; margin-bottom: 20px; }
.scenario-link {
  color: var(--accent);
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid rgba(182,255,58,.3);
  padding-bottom: 2px;
}
.scenario-link:hover { gap: 10px; border-color: var(--accent); }
.scenario-media { flex: 1 1 420px; }
.scenario-media img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-glass);
}

/* Related Links */
.related-list {
  max-width: 800px;
  margin: 0 auto;
}
.related-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 24px;
  background: rgba(17,28,46,.6);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  transition: var(--transition);
}
.related-item:hover {
  border-color: rgba(182,255,58,.3);
  background: rgba(17,28,46,.85);
  transform: translateX(4px);
  box-shadow: 0 0 18px rgba(182,255,58,.08);
}
.related-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: rgba(182,255,58,.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 18px;
}
.related-body { flex: 1; }
.related-title { font-size: 16px; font-weight: 600; margin-bottom: 2px; }
.related-desc { font-size: 14px; color: var(--text-secondary); }
.related-arrow { color: var(--text-secondary); font-size: 14px; }

/* FAQ */
.faq-section { background: var(--bg-secondary); border-top: 1px solid var(--border-glass); border-bottom: 1px solid var(--border-glass); }
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: rgba(17,28,46,.65);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(182,255,58,.22); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  font-size: 17px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  color: var(--text-primary);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  color: var(--accent);
  font-size: 26px;
  font-weight: 500;
  transition: transform .2s ease;
  line-height: 1;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer {
  padding: 0 24px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

/* CTA */
.cta-section {
  position: relative;
  padding: 88px 0;
  text-align: center;
  background:
    radial-gradient(600px 260px at 50% 100%, rgba(182,255,58,.14), transparent 65%),
    linear-gradient(rgba(11,18,32,.88), rgba(11,18,32,.94)),
    url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  border-top: 1px solid var(--border-glass);
}
.cta-inner { max-width: 680px; margin: 0 auto; }
.cta-title { font-size: 36px; font-weight: 900; margin-bottom: 14px; letter-spacing: -.5px; }
.cta-subtitle { color: var(--text-secondary); font-size: 16px; margin-bottom: 32px; line-height: 1.7; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid rgba(255,255,255,.05);
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer-brand h3 {
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-brand h3 .brand-icon {
  width: 32px;
  height: 32px;
  font-size: 16px;
  border-radius: 8px;
}
.footer-brand p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin-bottom: 16px; max-width: 280px; }
.footer-domain {
  font-size: 13px;
  color: var(--text-secondary);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border-glass);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  display: inline-block;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  color: var(--text-secondary);
  font-size: 14px;
}
.footer-col ul li a:hover { color: var(--accent); }
.footer-contact li { display: flex; align-items: center; gap: 8px; color: var(--text-secondary); font-size: 14px; }
.footer-contact li i { color: var(--accent); width: 16px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.05);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--text-secondary);
  font-size: 13px;
}

/* Responsive */
@media (max-width: 1024px) {
  .header-nav { display: none; }
  .mobile-tabbar { display: flex; }
  body { padding-bottom: 62px; }
  .header-cta { padding: 10px 18px; font-size: 13px; }
  .section { padding: 68px 0; }
  .section-title { font-size: 30px; }
  .page-hero { padding: 72px 0 56px; }
  .page-hero h1 { font-size: 36px; }
  .advantages-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .row { padding: 0 16px; }
  .section { padding: 56px 0; }
  .section-title { font-size: 26px; }
  .section-subtitle { font-size: 15px; }
  .section-head { margin-bottom: 36px; }
  .page-hero { padding: 56px 0 44px; }
  .page-hero h1 { font-size: 30px; }
  .page-hero-sub { font-size: 15px; }
  .page-hero-actions .btn { width: 100%; }
  .overview-grid { gap: 32px; }
  .advantages-grid { grid-template-columns: 1fr; }
  .advantage-card:nth-child(even) { margin-top: 0; clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%); }
  .process-steps { grid-template-columns: 1fr; }
  .scenario-row { gap: 24px; }
  .scenario-row:nth-child(even) .scenario-media { order: 0; }
  .scenario-title { font-size: 22px; }
  .related-item { padding: 18px 16px; }
  .related-arrow { display: none; }
  .cta-section { padding: 64px 0; }
  .cta-title { font-size: 28px; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
  .brand-text { font-size: 16px; }
  .brand-text span { font-size: 11px; }
}

@media (max-width: 520px) {
  .header-inner .brand-text span { display: none; }
  .header-cta { padding: 9px 14px; font-size: 12px; }
}

@media (min-width: 1025px) {
  .mobile-tabbar { display: none; }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
    --bg-primary: #0B1220;
    --bg-secondary: #111C2E;
    --bg-deep: #070C16;
    --bg-card: rgba(17, 28, 46, 0.65);
    --border-light: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(182, 255, 58, 0.25);
    --text-primary: #F4F7FB;
    --text-secondary: #8CA2C0;
    --text-body: #C9D4E3;
    --text-muted: #5C718C;
    --accent: #B6FF3A;
    --accent-hover: #C6FF55;
    --steel-blue: #1E2C42;
    --success: #3DDC84;
    --danger: #FF4D4F;
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-pill: 999px;
    --shadow-card: 0 0 0 1px rgba(255,255,255,.03), 0 8px 24px rgba(0,0,0,.3);
    --shadow-glow: 0 0 24px rgba(182,255,58,.15);
    --transition: 0.2s ease;
    --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

/* ===== 基础重置 ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    background-image: radial-gradient(ellipse 700px 500px at 85% -10%, rgba(30,44,66,.55), transparent);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

ul, ol {
    list-style-position: outside;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family);
    color: var(--text-primary);
    line-height: 1.3;
    font-weight: 700;
}

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

.row {
    max-width: none;
    margin-right: -12px;
    margin-left: -12px;
    display: flex;
    flex-wrap: wrap;
}

.columns {
    padding-right: 12px;
    padding-left: 12px;
    box-sizing: border-box;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 700;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
    line-height: 1;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: var(--bg-primary);
    box-shadow: 0 0 32px rgba(182, 255, 58, 0.4);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-ghost {
    background: rgba(255,255,255,0.05);
    color: var(--text-primary);
    border-color: rgba(255,255,255,0.2);
    backdrop-filter: blur(8px);
}

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.btn-lg {
    padding: 16px 42px;
    font-size: 16px;
}

/* ===== 顶部导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(11, 18, 32, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background 0.25s ease;
}

.site-header.scrolled {
    background: rgba(11, 18, 32, 0.92);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--accent);
    color: var(--bg-primary);
    font-size: 22px;
    font-weight: 800;
    box-shadow: 0 0 18px rgba(182, 255, 58, 0.25);
}

.brand-text {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.2px;
}

.brand-text span {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.4px;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    justify-content: center;
    flex-wrap: nowrap;
}

.header-nav a {
    padding: 9px 14px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: color var(--transition), background var(--transition);
    white-space: nowrap;
}

.header-nav a:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.header-nav a.active {
    color: var(--accent);
    background: rgba(182, 255, 58, 0.08);
}

.header-cta {
    padding: 11px 24px;
    font-size: 14px;
    flex-shrink: 0;
}

/* ===== 移动端底部 Tab ===== */
.mobile-tabbar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(62px + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
    background: rgba(11, 18, 32, 0.94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 999;
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.3);
}

.mobile-tabbar .tab-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 500;
    transition: color var(--transition);
    padding: 8px 4px;
}

.mobile-tabbar .tab-item i {
    font-size: 18px;
}

.mobile-tabbar .tab-item:hover,
.mobile-tabbar .tab-item.active {
    color: var(--accent);
}

/* ===== 文章 Banner ===== */
.article-banner {
    background: linear-gradient(135deg, rgba(11, 18, 32, 0.88), rgba(17, 28, 46, 0.94)),
                url('/assets/images/backpic/back-2.webp') center 30% / cover no-repeat;
    padding: 72px 0 56px;
    border-bottom: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.article-banner::after {
    content: '';
    position: absolute;
    top: -60%;
    right: -10%;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(182, 255, 58, 0.12), transparent 70%);
    pointer-events: none;
}

.banner-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 40px;
    align-items: center;
}

.article-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 18px;
}

.article-breadcrumb a {
    color: var(--text-secondary);
    transition: color var(--transition);
}

.article-breadcrumb a:hover {
    color: var(--accent);
}

.article-breadcrumb .sep {
    color: rgba(140, 162, 192, 0.4);
}

.article-breadcrumb .current {
    color: var(--text-primary);
    font-weight: 500;
    max-width: 280px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.article-banner h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.4px;
    color: var(--text-primary);
    margin-bottom: 18px;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    color: var(--text-secondary);
    font-size: 14px;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.meta-item i {
    color: var(--accent);
    font-size: 14px;
}

.banner-media {
    text-align: right;
}

.banner-media img {
    width: 100%;
    max-width: 280px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
}

/* ===== 文章主体 ===== */
.article-body-section {
    padding: 64px 0 80px;
}

.article-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-body);
}

.article-content > *:first-child {
    margin-top: 0;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 44px 0 16px;
    line-height: 1.4;
    padding-top: 8px;
}

.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 34px 0 12px;
}

.article-content p {
    margin-bottom: 24px;
    line-height: 1.85;
}

.article-content a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-content a:hover {
    color: var(--accent-hover);
}

.article-content ul,
.article-content ol {
    margin: 16px 0 24px;
    padding-left: 24px;
}

.article-content li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.article-content li::marker {
    color: var(--accent);
}

.article-content blockquote {
    border-left: 3px solid var(--accent);
    background: rgba(182, 255, 58, 0.05);
    padding: 18px 22px;
    margin: 28px 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-primary);
    font-style: italic;
}

.article-content blockquote p {
    margin-bottom: 0;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 28px 0;
    box-shadow: var(--shadow-card);
}

.article-content pre {
    background: var(--bg-deep);
    padding: 18px 22px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    border: 1px solid var(--border-light);
    font-size: 14px;
    line-height: 1.65;
    margin: 28px 0;
}

.article-content code {
    background: rgba(255, 255, 255, 0.07);
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 14px;
    font-family: "SF Mono", "JetBrains Mono", Consolas, monospace;
}

.article-content pre code {
    background: transparent;
    padding: 0;
    font-size: 14px;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0;
    font-size: 15px;
}

.article-content th,
.article-content td {
    border: 1px solid var(--border-light);
    padding: 12px 16px;
    text-align: left;
    line-height: 1.6;
}

.article-content th {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    font-weight: 600;
}

/* ===== 上一篇/下一篇（动态预留） ===== */
.post-pagination {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.post-pagination:empty {
    display: none;
}

/* ===== 相关推荐 ===== */
.related-section {
    margin-top: 56px;
    padding-top: 48px;
    border-top: 1px solid var(--border-light);
}

.related-header {
    margin-bottom: 28px;
}

.related-header h2 {
    font-size: 24px;
    font-weight: 700;
}

.related-header h2::after {
    content: '';
    display: block;
    width: 42px;
    height: 3px;
    background: var(--accent);
    border-radius: var(--radius-pill);
    margin-top: 10px;
}

.related-list-cms {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 28px;
}

.related-list-cms:empty {
    display: none;
}

.related-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

/* ===== CTA 区 ===== */
.article-cta {
    margin-top: 56px;
    padding: 52px 48px;
    background: linear-gradient(135deg, rgba(182, 255, 58, 0.07), rgba(11, 18, 32, 0.92) 60%),
                var(--bg-deep);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid rgba(182, 255, 58, 0.15);
    position: relative;
    overflow: hidden;
}

.article-cta::before {
    content: '';
    position: absolute;
    top: -80%;
    left: 50%;
    transform: translateX(-50%);
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(182, 255, 58, 0.18), transparent 70%);
    pointer-events: none;
}

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

.article-cta h3 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 12px;
}

.article-cta p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== 未找到状态 ===== */
.not-found-section {
    padding: 120px 0;
    min-height: 65vh;
    display: flex;
    align-items: center;
    background-image: radial-gradient(ellipse 500px 380px at 50% 30%, rgba(30,44,66,.5), transparent);
}

.not-found-card {
    text-align: center;
    padding: 60px 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    max-width: 460px;
    margin: 0 auto;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(12px);
}

.not-found-icon {
    font-size: 56px;
    color: var(--accent);
    margin-bottom: 18px;
}

.not-found-card h1 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 12px;
}

.not-found-card p {
    color: var(--text-secondary);
    margin-bottom: 28px;
}

/* ===== 页脚 ===== */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 64px 0 0;
    margin-top: 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 48px;
}

.footer-brand h3 {
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 12px;
}

.footer-domain {
    display: inline-block;
    font-size: 13px;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-light);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-variant-numeric: tabular-nums;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 18px;
    color: var(--text-primary);
}

.footer-col ul {
    list-style: none;
    padding: 0;
}

.footer-col li {
    margin-bottom: 10px;
}

.footer-col a {
    color: var(--text-secondary);
    font-size: 14px;
    transition: color var(--transition);
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-contact li {
    color: var(--text-secondary);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact i {
    color: var(--accent);
    width: 16px;
    text-align: center;
    font-size: 13px;
}

.footer-bottom {
    padding: 22px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    color: var(--text-muted);
    font-size: 13px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .header-nav {
        display: none;
    }

    .header-inner {
        height: 64px;
    }

    .mobile-tabbar {
        display: flex;
    }

    body {
        padding-bottom: calc(62px + env(safe-area-inset-bottom));
    }

    .site-footer {
        margin-bottom: calc(62px + env(safe-area-inset-bottom));
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }

    .article-banner {
        padding: 56px 0 44px;
    }

    .banner-grid {
        grid-template-columns: 1fr 220px;
        gap: 24px;
    }

    .article-banner h1 {
        font-size: 34px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .banner-grid {
        grid-template-columns: 1fr;
    }

    .banner-media {
        display: none;
    }

    .article-cta {
        padding: 40px 24px;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .cta-actions .btn {
        width: 100%;
        max-width: 280px;
    }
}

@media (max-width: 640px) {
    .article-banner h1 {
        font-size: 28px;
    }

    .article-banner {
        padding: 44px 0 36px;
    }

    .article-body-section {
        padding: 48px 0 56px;
    }

    .article-content {
        font-size: 15px;
    }

    .article-content h2 {
        font-size: 22px;
    }

    .article-content h3 {
        font-size: 18px;
    }

    .article-content pre {
        padding: 14px 16px;
        font-size: 13px;
    }

    .article-meta {
        gap: 14px;
    }

    .related-actions,
    .cta-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .related-actions .btn,
    .cta-actions .btn {
        width: 100%;
    }

    .not-found-card {
        padding: 44px 24px;
    }

    .header-cta {
        padding: 10px 18px;
        font-size: 13px;
    }

    .brand-text {
        font-size: 17px;
    }

    .brand-text span {
        font-size: 11px;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* roulang page: category2 */
:root {
  --bg-primary: #0B1220;
  --bg-secondary: #111C2E;
  --bg-deep: #070C16;
  --border-glass: rgba(255, 255, 255, 0.08);
  --text-primary: #F4F7FB;
  --text-secondary: #8CA2C0;
  --accent: #B6FF3A;
  --accent-hover: #C6FF55;
  --steel-blue: #1E2C42;
  --success: #3DDC84;
  --danger: #FF4D4F;
  --radius: 14px;
  --radius-btn: 10px;
  --container-w: 1200px;
  --section-pad: 96px;
  --shadow-glow: 0 0 24px rgba(182, 255, 58, 0.15);
  --shadow-hover: 0 0 32px rgba(182, 255, 58, 0.4);
  --transition: 0.2s ease;
  --font-stack: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-stack);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

button,
input {
  font-family: inherit;
  font-size: 16px;
  border: none;
  outline: none;
}

ul,
ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--steel-blue);
  border-radius: 20px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===================== Header ===================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background var(--transition);
}

.site-header.scrolled {
  background: rgba(11, 18, 32, 0.95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: var(--bg-primary);
  font-weight: 800;
  font-size: 18px;
  border-radius: 10px;
  letter-spacing: -0.5px;
  box-shadow: 0 0 18px rgba(182, 255, 58, 0.25);
}

.brand-text {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: 0.2px;
}

.brand-text span {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  display: block;
  line-height: 1.3;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.header-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
}

.header-nav a:hover {
  color: var(--text-primary);
}

.header-nav a.active {
  color: var(--accent);
}

.header-nav a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(182, 255, 58, 0.6);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  border-radius: var(--radius-btn);
  padding: 14px 28px;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.2px;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
  backdrop-filter: blur(6px);
}

.btn-secondary:hover {
  border-color: var(--accent);
  box-shadow: 0 0 18px rgba(182, 255, 58, 0.12);
  color: var(--accent);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
}

.header-cta {
  padding: 10px 20px;
  font-size: 14px;
  flex-shrink: 0;
}

/* ===================== Mobile Bottom Tab ===================== */
.mobile-tabbar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 60px;
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(11, 18, 32, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-tabbar-inner {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  height: 60px;
}

.mobile-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  transition: color var(--transition);
}

.mobile-tab i {
  font-size: 18px;
}

.mobile-tab:hover,
.mobile-tab.active {
  color: var(--accent);
}

.mobile-tab.active {
  text-shadow: 0 0 12px rgba(182, 255, 58, 0.4);
}

/* ===================== Hero Banner ===================== */
.category-hero {
  position: relative;
  padding: 140px 0 80px;
  background: linear-gradient(rgba(11, 18, 32, 0.78), rgba(11, 18, 32, 0.92)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  overflow: hidden;
}

.category-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(182, 255, 58, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb i {
  font-size: 12px;
  opacity: 0.6;
}

.category-hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  max-width: 680px;
  letter-spacing: -0.5px;
}

.category-hero h1 .accent-text {
  color: var(--accent);
  position: relative;
}

.category-hero h1 .accent-text::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 8px;
  background: rgba(182, 255, 58, 0.18);
  border-radius: 4px;
  z-index: -1;
}

.category-hero .hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 30px;
}

.category-hero .hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(182, 255, 58, 0.08);
  border: 1px solid rgba(182, 255, 58, 0.25);
  border-radius: 999px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

/* ===================== Section Base ===================== */
.section {
  padding: var(--section-pad) 0;
  position: relative;
}

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

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

.section-header-center {
  text-align: center;
  margin-bottom: 56px;
}

.section-header-center h2 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

.section-header-center p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

.section-title-box {
  margin-bottom: 44px;
}

.section-title-box h2 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 10px;
  letter-spacing: -0.3px;
}

.section-title-box p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.8;
}

/* ===================== Steps ===================== */
.steps-block {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step-card {
  background: rgba(17, 28, 46, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 28px 24px;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
}

.step-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 36px;
  height: 36px;
  background: rgba(182, 255, 58, 0.04);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(182, 255, 58, 0.25);
}

.step-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  display: block;
  margin-bottom: 12px;
  line-height: 1;
}

.step-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===================== Split Feature ===================== */
.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 88px;
}

.split-row:last-child {
  margin-bottom: 0;
}

.split-text .split-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  background: rgba(182, 255, 58, 0.08);
  border: 1px solid rgba(182, 255, 58, 0.2);
  border-radius: 999px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.split-text h3 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 14px;
}

.split-text > p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.split-list {
  display: grid;
  gap: 13px;
}

.split-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.6;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 10px;
}

.split-list li i {
  color: var(--accent);
  margin-top: 3px;
  font-size: 14px;
  flex-shrink: 0;
}

.split-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.split-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.split-media:hover img {
  transform: scale(1.02);
}

.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 18, 32, 0.3) 0%, transparent 40%);
}

/* ===================== Safety Section ===================== */
.safety-section {
  background: linear-gradient(rgba(11, 18, 32, 0.88), rgba(11, 18, 32, 0.94)), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  border-block: 1px solid rgba(255, 255, 255, 0.04);
}

.safety-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.safety-card {
  background: rgba(17, 28, 46, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  gap: 18px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.safety-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.safety-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--steel-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 20px;
  flex-shrink: 0;
}

.safety-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
}

.safety-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===================== FAQ ===================== */
.faq-wrap {
  max-width: 780px;
  margin: 0 auto;
}

.faq-wrap .accordion {
  background: transparent;
  border: none;
  border-radius: 0;
}

.faq-wrap .accordion-item {
  background: rgba(17, 28, 46, 0.45);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-wrap .accordion-item:hover {
  border-color: rgba(182, 255, 58, 0.18);
}

.faq-wrap .accordion-item:last-child {
  margin-bottom: 0;
}

.faq-wrap .accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  border: none;
  padding: 20px 24px;
  line-height: 1.5;
  min-height: auto;
  position: relative;
  border-radius: 0;
}

.faq-wrap .accordion-title::after {
  content: "\f067";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 14px;
  color: var(--accent);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(182, 255, 58, 0.08);
  border-radius: 8px;
  flex-shrink: 0;
  transition: transform var(--transition), background var(--transition);
}

.faq-wrap .accordion-item.is-active .accordion-title::after {
  content: "\f068";
  transform: rotate(180deg);
  background: rgba(182, 255, 58, 0.16);
}

.faq-wrap .accordion-title:hover,
.faq-wrap .accordion-title:focus {
  background: rgba(255, 255, 255, 0.02);
  color: var(--accent);
}

.faq-wrap .accordion-content {
  background: rgba(11, 18, 32, 0.5);
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: 18px 24px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

.faq-wrap .accordion-content p {
  margin-bottom: 0;
}

/* ===================== CTA ===================== */
.cta-section {
  position: relative;
  padding: 88px 0;
  background: var(--bg-deep);
  text-align: center;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(182, 255, 58, 0.09) 0%, transparent 65%);
  pointer-events: none;
}

.cta-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}

.cta-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===================== Footer ===================== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 76px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 52px;
}

.footer-brand h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 300px;
  margin-bottom: 14px;
}

.footer-domain {
  display: inline-block;
  font-size: 13px;
  color: var(--text-secondary);
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
  color: var(--text-primary);
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--transition), padding-left var(--transition);
}

.footer-col ul a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.footer-contact i {
  color: var(--accent);
  width: 20px;
  text-align: center;
  font-size: 15px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(140, 162, 192, 0.7);
}

/* ===================== Left Rail Card ===================== */
.rail-card {
  background: rgba(17, 28, 46, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.rail-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.rail-card h3 i {
  color: var(--accent);
}

.rail-list li {
  display: flex;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  align-items: flex-start;
}

.rail-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.rail-list li i {
  color: var(--accent);
  font-size: 13px;
  margin-top: 5px;
  flex-shrink: 0;
}

.rail-list li strong {
  color: var(--text-primary);
  font-weight: 600;
  display: block;
  font-size: 14px;
}

.rail-list li span {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ===================== Responsive ===================== */
@media (max-width: 1024px) {
  :root {
    --section-pad: 72px;
  }

  .header-nav {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .site-header .brand-text span {
    display: none;
  }

  .mobile-tabbar {
    display: block;
  }

  body {
    padding-bottom: 60px;
  }

  .steps-block {
    grid-template-columns: repeat(2, 1fr);
  }

  .split-row {
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 56px;
  }

  .split-row:last-child .split-media {
    order: -1;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 640px) {
  :root {
    --section-pad: 56px;
  }

  .category-hero {
    padding: 110px 0 56px;
  }

  .category-hero h1 {
    font-size: 32px;
  }

  .category-hero .hero-sub {
    font-size: 15px;
  }

  .section-header-center h2,
  .section-title-box h2 {
    font-size: 26px;
  }

  .section-header-center {
    margin-bottom: 36px;
  }

  .steps-block {
    grid-template-columns: 1fr;
  }

  .step-card {
    padding: 24px 20px;
  }

  .split-text h3 {
    font-size: 22px;
  }

  .safety-grid {
    grid-template-columns: 1fr;
  }

  .safety-card {
    padding: 22px 18px;
  }

  .faq-wrap .accordion-title {
    font-size: 15px;
    padding: 16px 18px;
  }

  .faq-wrap .accordion-content {
    padding: 14px 18px 18px;
    font-size: 14px;
  }

  .cta-title {
    font-size: 26px;
  }

  .cta-buttons .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .split-media img {
    height: 240px;
  }
}

@media (min-width: 1025px) {
  .mobile-tabbar {
    display: none !important;
  }
}