/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #2563EB;
  --primary-dark: #1E40AF;
  --primary-light: #EFF6FF;
  --primary-lighter: #DBEAFE;
  --accent: #0EA5E9;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --text-title: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --divider: #F1F5F9;
  --bg-main: #FFFFFF;
  --bg-alt: #F8FAFC;
  --bg-dark: #0F172A;
  --bg-footer: #1E293B;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(15,23,42,.04), 0 8px 24px rgba(30,64,175,.08);
  --shadow-md: 0 12px 32px rgba(30,64,175,.14);
  --shadow-btn: 0 6px 16px rgba(37,99,235,.18);
  --container: 1240px;
  --nav-height: 72px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-number: "DIN Alternate", "Bebas Neue", "Arial Narrow", sans-serif;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-body);
  background: var(--bg-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; }

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

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255,255,255,.68);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(226,232,240,.65);
  transition: background .3s ease, box-shadow .3s ease, height .3s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,.92);
  box-shadow: 0 4px 24px rgba(15,23,42,.06);
  height: 64px;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-title);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
}
.logo-text b { color: var(--primary); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  padding: 6px 2px;
  position: relative;
  transition: color .2s ease;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width .25s ease;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-links a.active::after { width: 100%; }
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 22px;
  background: var(--primary);
  color: #fff !important;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  gap: 6px;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
  box-shadow: var(--shadow-btn);
}
.nav-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37,99,235,.25);
}
.nav-btn::after { display: none; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px; height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--text-title);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.mobile-drawer {
  position: fixed;
  top: 0; right: -320px;
  width: 300px;
  height: 100vh;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1001;
  padding: 90px 28px 32px;
  box-shadow: -8px 0 32px rgba(15,23,42,.1);
  transition: right .35s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mobile-drawer.open { right: 0; }
.mobile-drawer a {
  font-size: 18px;
  font-weight: 500;
  padding: 14px 0;
  border-bottom: 1px solid var(--divider);
  color: var(--text-body);
  transition: color .2s, padding-left .2s;
}
.mobile-drawer a:hover { color: var(--primary); padding-left: 8px; }
.mobile-drawer a.active { color: var(--primary); font-weight: 600; }
.mobile-drawer a.nav-btn-mobile {
  background: var(--primary);
  color: #fff;
  text-align: center;
  border-radius: 12px;
  border: none;
  padding: 14px;
  font-weight: 600;
  margin-top: 16px;
  box-shadow: var(--shadow-btn);
}
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.4);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, visibility .3s;
}
.drawer-overlay.open { opacity: 1; visibility: visible; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  border: none;
  transition: all .25s ease;
  line-height: 1.4;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37,99,235,.28);
}
.btn-primary:focus-visible, .btn-secondary:focus-visible {
  outline: 3px solid rgba(37,99,235,.3);
  outline-offset: 2px;
}
.btn-secondary {
  background: rgba(255,255,255,.7);
  color: var(--text-title);
  border: 1px solid #CBD5E1;
  backdrop-filter: blur(4px);
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn-sm {
  padding: 7px 16px;
  font-size: 13px;
  border-radius: 8px;
  font-weight: 500;
}
.btn-outline-sm {
  padding: 7px 16px;
  font-size: 13px;
  border-radius: 8px;
  font-weight: 500;
  background: #fff;
  color: var(--primary) !important;
  border: 1px solid var(--primary);
  transition: background .2s, color .2s;
}
.btn-outline-sm:hover { background: var(--primary-light); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, #EFF6FF 0%, #F0F7FF 60%, #FFFFFF 100%);
  overflow: hidden;
  padding-top: var(--nav-height);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.jpg');
  background-size: cover;
  background-position: center;
  opacity: .32;
  z-index: 0;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.78) 0%, rgba(239,246,255,.82) 100%);
}
.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,.05) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 1;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,.8), transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,.8), transparent 75%);
}
.hero .container {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 48px;
  padding-top: 40px;
  padding-bottom: 48px;
}
.hero-left { flex: 0 0 58%; }
.hero-right { flex: 0 0 42%; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.9);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-body);
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 8px rgba(0,0,0,.04);
  margin-bottom: 24px;
}
.live-dot {
  width: 8px; height: 8px;
  background: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(16,185,129,.2);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(16,185,129,.2); }
  50% { box-shadow: 0 0 0 6px rgba(16,185,129,.1); }
}
.hero h1 {
  font-size: 46px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--text-title);
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.hero h1 .highlight {
  background: linear-gradient(120deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-body);
  max-width: 520px;
  margin-bottom: 32px;
}
.hero-ctas {
  display: flex;
  gap: 16px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.hero-trust {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  padding-top: 4px;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}
.trust-item svg { color: var(--primary); flex-shrink: 0; }

/* Hero 数据看板 */
.scoreboard-card {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.6);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 48px rgba(30,64,175,.1);
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.scoreboard-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--success));
}
.sb-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--divider);
  margin-bottom: 20px;
}
.sb-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-title);
}
.sb-status .live-dot {
  width: 6px; height: 6px;
}
.sb-date {
  font-size: 12px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.sb-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}
.sb-cell {
  padding: 18px 8px;
  text-align: center;
  position: relative;
}
.sb-cell:nth-child(1) { border-right: 1px solid var(--divider); border-bottom: 1px solid var(--divider); }
.sb-cell:nth-child(2) { border-bottom: 1px solid var(--divider); }
.sb-cell:nth-child(3) { border-right: 1px solid var(--divider); }
.sb-cell .num {
  font-family: var(--font-number);
  font-size: 40px;
  font-weight: 800;
  color: var(--text-title);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  margin-bottom: 6px;
}
.sb-cell .num.blue {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.sb-cell .label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 400;
}

/* ===== 指标看板 ===== */
.metrics {
  padding: 80px 0;
  background: var(--bg-main);
  border-bottom: 1px solid var(--divider);
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.metric-card {
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: all .25s ease;
  box-shadow: var(--shadow-sm);
}
.metric-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.metric-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  color: var(--primary);
}
.metric-card .num {
  font-family: var(--font-number);
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  color: var(--text-title);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-variant-numeric: tabular-nums;
  display: block;
  margin-bottom: 10px;
}
.metric-card .desc {
  font-size: 14px;
  color: var(--text-muted);
}

/* ===== 服务矩阵 ===== */
.services {
  padding: 96px 0;
  background: var(--bg-alt);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 34px;
  line-height: 1.3;
  color: var(--text-title);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}
.section-head .desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 480px;
  line-height: 1.7;
}
.section-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color .2s, gap .2s;
}
.section-link:hover { color: var(--primary-dark); gap: 8px; }

/* 排名列表 */
.ranking-list {
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 48px;
}
.ranking-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 24px;
  height: 68px;
  border-bottom: 1px solid var(--divider);
  position: relative;
  transition: background .2s ease;
}
.ranking-row:last-child { border-bottom: none; }
.ranking-row:hover {
  background: var(--bg-alt);
}
.ranking-row::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--primary);
  border-radius: 0 4px 4px 0;
  opacity: 0;
  transition: opacity .2s;
}
.ranking-row:hover::before { opacity: 1; }
.rank-num {
  font-family: var(--font-number);
  font-size: 20px;
  font-weight: 700;
  color: #cbd5e1;
  width: 40px;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}
.rank-name {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-title);
}
.rank-tags { display: flex; gap: 8px; }
.badge-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
}
.badge-tag.flag { background: #FEF3C7; color: #B45309; }
.badge-tag.new { background: #DCFCE7; color: #15803D; }
.rank-score {
  font-size: 14px;
  font-weight: 600;
  color: var(--warning);
  min-width: 42px;
}
.rank-status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(16,185,129,.1);
  color: #059669;
}
.rank-status.rest { background: rgba(245,158,11,.1); color: #B45309; }
.rank-btn {
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-lighter);
  transition: all .2s;
}
.rank-btn:hover { background: var(--primary); color: #fff; }

/* 服务卡片 */
.service-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
  transform: translateY(-4px);
}
.card-media {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.card-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.service-card:hover .card-media img { transform: scale(1.03); }
.card-badge {
  position: absolute;
  top: 14px; right: 14px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(4px);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
}
.card-body {
  padding: 24px 28px 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 10px;
}
.card-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex: 1;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.mini-tag {
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 6px;
  background: var(--primary-light);
  color: var(--primary);
}
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--divider);
  padding-top: 18px;
}
.card-score {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-title);
}
.card-score .star { color: var(--warning); }
.card-score .price {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 400;
  display: block;
}

/* ===== 结果对比 ===== */
.compare {
  padding: 96px 0;
  background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
}
.compare-panel {
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 48px;
}
.compare-head {
  text-align: center;
  margin-bottom: 40px;
}
.compare-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 10px;
}
.compare-head .desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}
.compare-cols {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 36px;
}
.compare-card {
  flex: 1;
  border-radius: var(--radius-md);
  padding: 28px;
}
.compare-card.dark-side {
  background: #F1F5F9;
  border: 1px solid #E2E8F0;
}
.compare-card.brand-side {
  background: linear-gradient(135deg, var(--primary-light), #FFFFFF);
  border: 1px solid var(--primary-lighter);
}
.compare-card h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 18px;
}
.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.6;
}
.compare-icon {
  flex-shrink: 0;
  width: 20px; height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}
.compare-icon.x {
  background: rgba(239,68,68,.1);
  color: var(--danger);
}
.compare-icon.check {
  background: rgba(16,185,129,.12);
  color: var(--success);
}
.vs-badge {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: var(--primary);
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(37,99,235,.12);
}
.compare-graph {
  border-top: 1px solid var(--divider);
  padding-top: 28px;
}
.graph-item {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}
.graph-label {
  font-size: 13px;
  color: var(--text-muted);
  min-width: 64px;
  font-weight: 500;
}
.graph-bar {
  flex: 1;
  height: 12px;
  background: var(--divider);
  border-radius: 999px;
  overflow: hidden;
}
.graph-bar .fill {
  height: 100%;
  border-radius: 999px;
}
.fill.gray { width: 52%; background: #CBD5E1; }
.fill.gradient {
  width: 96%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.graph-value {
  font-family: var(--font-number);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-title);
  min-width: 36px;
  text-align: right;
}

/* ===== FAQ ===== */
.faq {
  padding: 96px 0;
  background: var(--bg-main);
}
.faq-head {
  text-align: center;
  margin-bottom: 48px;
}
.faq-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 10px;
}
.faq-head .desc {
  font-size: 15px;
  color: var(--text-muted);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s;
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(37,99,235,.06);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: none;
  border: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-title);
  text-align: left;
  gap: 16px;
}
.faq-icon {
  position: relative;
  width: 24px; height: 24px;
  flex-shrink: 0;
}
.faq-icon::before, .faq-icon::after {
  content: "";
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}
.faq-icon::before {
  width: 14px; height: 2px;
  top: 11px; left: 5px;
}
.faq-icon::after {
  width: 2px; height: 14px;
  top: 5px; left: 11px;
}
.faq-item.active .faq-icon::after { transform: rotate(90deg); opacity: 0; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ===== 转化表单 ===== */
.booking {
  padding: 96px 0;
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
  position: relative;
  overflow: hidden;
}
.booking::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.booking .container {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 56px;
  align-items: flex-start;
}
.booking-left {
  flex: 0 0 42%;
  padding-top: 8px;
}
.booking-left h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 14px;
  line-height: 1.3;
}
.booking-left .lead {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 24px;
}
.booking-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}
.booking-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text-body);
}
.booking-points .check {
  color: var(--success);
  font-weight: 700;
  font-size: 18px;
  line-height: 1;
  margin-top: 2px;
}
.booking-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 24px;
  background: rgba(255,255,255,.6);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,.8);
}
.booking-info p {
  font-size: 14px;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 8px;
}
.booking-info svg { color: var(--primary); flex-shrink: 0; }
.booking-form-wrap {
  flex: 0 0 58%;
  background: var(--bg-main);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 48px rgba(30,64,175,.12);
  padding: 32px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-title);
}
.form-field input,
.form-field select,
.form-field textarea {
  padding: 12px 14px;
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-body);
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.form-field input::placeholder,
.form-field textarea::placeholder {
  color: #94A3B8;
}
.form-field textarea { resize: vertical; min-height: 80px; }
.form-submit {
  grid-column: 1 / -1;
  width: 100%;
  padding: 14px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, transform .2s, box-shadow .2s;
  box-shadow: var(--shadow-btn);
  margin-top: 4px;
}
.form-submit:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37,99,235,.28);
}
.form-note {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-dark);
  color: #E2E8F0;
  padding: 64px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo {
  color: #fff;
  margin-bottom: 14px;
}
.footer-brand .footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #94A3B8;
  margin-bottom: 20px;
  max-width: 280px;
}
.footer-socials {
  display: flex;
  gap: 12px;
}
.footer-socials a {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #CBD5E1;
  transition: background .2s, color .2s;
}
.footer-socials a:hover { background: var(--primary); color: #fff; }
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: #94A3B8;
  transition: color .2s, padding-left .2s;
}
.footer-col ul a:hover { color: #fff; padding-left: 4px; }
.footer-contact li {
  display: flex;
  gap: 8px;
  font-size: 14px;
  color: #94A3B8;
  align-items: flex-start;
}
.footer-contact svg {
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #64748B;
}

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .hero h1 { font-size: 40px; }
  .sb-cell .num { font-size: 34px; }
  .service-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 991px) {
  .nav-links { display: none; }
  .nav-cta .btn.nav-btn { display: none; }
  .nav-toggle { display: flex; }
  .hero .container { flex-direction: column; gap: 40px; }
  .hero-left, .hero-right { flex: 0 0 100%; }
  .hero { min-height: auto; padding-bottom: 64px; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .compare-cols { flex-direction: column; gap: 20px; }
  .vs-badge { transform: rotate(90deg); margin: 4px 0; }
  .booking .container { flex-direction: column; gap: 40px; }
  .booking-left, .booking-form-wrap { flex: 0 0 100%; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 32px; line-height: 1.3; }
  .hero-sub { font-size: 16px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-head h2 { font-size: 26px; }
  .ranking-row { height: auto; padding: 16px; flex-wrap: wrap; gap: 8px; }
  .rank-num { width: 28px; font-size: 16px; }
  .rank-name { flex: 1 1 60%; font-size: 15px; }
  .rank-score { display: none; }
  .rank-btn { margin-left: auto; }
  .service-cards { grid-template-columns: 1fr; }
  .compare-panel { padding: 24px 16px; }
  .compare-card { padding: 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-field.full { grid-column: auto; }
  .form-submit { grid-column: auto; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .hero-ctas { flex-direction: column; width: 100%; }
  .hero-ctas .btn { width: 100%; }
  .metrics-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .metric-card { padding: 24px 12px; }
  .metric-card .num { font-size: 36px; }
  .sb-cell .num { font-size: 30px; }
  .sb-grid { gap: 2px; }
}