:root {
  --text: #f4f7ff;
  --muted: #d8defa;
  --primary: #7bb5ff;
  --primary-strong: #4f8cff;
  --shadow: 0 28px 70px rgba(44, 34, 120, 0.28);
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 12%, rgba(191, 111, 255, 0.32), transparent 22%),
    radial-gradient(circle at 88% 18%, rgba(131, 170, 255, 0.24), transparent 24%),
    linear-gradient(135deg, #9d5cf3 0%, #6e63ea 38%, #4f82ea 72%, #4b7fe6 100%);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 30; backdrop-filter: blur(18px);
  background: rgba(86, 91, 216, 0.26); border-bottom: 1px solid rgba(255,255,255,0.08);
}
.site-header__inner {
  min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: 0.02em; }
.brand__mark {
  width: 64px; height: 64px; flex: 0 0 64px; position: relative; display: inline-flex; align-items: center; justify-content: center;
}
.brand__mark img { width: 100%; height: 100%; object-fit: contain; display: block; }
.brand__text small { display: block; margin-top: 3px; font-size: 12px; color: var(--muted); }
.nav { display: flex; align-items: center; gap: 22px; font-size: 15px; }
.nav a { color: rgba(237,245,255,0.82); }
.header-action, .btn, .faq-nav-chip, .route-button, .cta-button {
  display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.header-action, .btn--primary, .route-button--primary, .cta-button {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong)); color: #fff;
  box-shadow: 0 18px 34px rgba(25,118,255,0.24);
}
.header-action, .btn { min-height: 46px; padding: 0 18px; }
.btn:hover, .header-action:hover, .faq-nav-chip:hover, .route-button:hover, .cta-button:hover { transform: translateY(-1px); }
.btn--secondary, .faq-nav-chip, .route-button--secondary {
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12); color: var(--text);
}
.section { padding: 22px 0; }
.hero { padding: 52px 0 18px; }
.hero-intro,
.faq-nav-panel,
.priority-panel,
.category-panel,
.category-main,
.category-side,
.question-card,
.route-panel,
.route-card,
.cta-panel,
.footer-panel {
  border-radius: 30px; border: 1px solid rgba(255,255,255,0.1); box-shadow: var(--shadow);
  background: linear-gradient(180deg, rgba(255,255,255,0.12), rgba(255,255,255,0.04)); backdrop-filter: blur(14px);
}
.hero-intro,
.faq-nav-panel,
.priority-panel,
.route-panel,
.cta-panel,
.footer-panel {
  padding: 34px;
}
.category-panel,
.category-main,
.category-side,
.question-card,
.route-card {
  padding: 24px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; padding: 9px 14px; border-radius: 999px;
  background: rgba(62,166,255,0.12); border: 1px solid rgba(62,166,255,0.2); color: #dceeff;
  font-size: 13px; font-weight: 700; letter-spacing: 0.03em;
}
h1 { margin: 20px 0 16px; font-size: clamp(40px, 5.6vw, 68px); line-height: 1.02; letter-spacing: -0.04em; }
.section-head { margin-bottom: 18px; }
.section-head h2 { margin: 0 0 8px; font-size: clamp(30px, 4vw, 46px); line-height: 1.08; letter-spacing: -0.03em; }
.hero-lead, .section-head p, .priority-card p, .question-card p, .category-side p, .route-card p, .footer-brand p, .footer-col a, .footer-col span {
  color: var(--muted); line-height: 1.8;
}
.hero-actions, .faq-nav, .route-actions, .cta-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.hero-intro { max-width: 920px; }
.faq-nav { margin-top: 0; }
.faq-nav-chip, .route-button, .cta-button { min-height: 40px; padding: 0 16px; }
.priority-grid,
.category-layout,
.route-grid,
.footer-grid {
  display: grid; gap: 18px;
}
.priority-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.category-layout { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.category-shell { display: grid; gap: 18px; }
.route-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.footer-grid { grid-template-columns: 1.3fr repeat(3, minmax(0, 1fr)); }
.icon {
  width: 62px; height: 62px; border-radius: 20px; display: inline-flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden; background: linear-gradient(135deg, rgba(125,195,255,0.2), rgba(208,134,255,0.18));
  color: #f7fbff; margin-bottom: 18px; border: 1px solid rgba(255,255,255,0.12);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.18), 0 16px 34px rgba(77,65,191,0.2);
}
.icon svg {
  width: 26px; height: 26px; stroke: currentColor; fill: none; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round;
}
.priority-card,
.question-card,
.category-main,
.category-side,
.route-card {
  transition: background 0.22s ease, border-color 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
}
.priority-card:hover,
.question-card:hover,
.category-main:hover,
.category-side:hover,
.route-card:hover {
  background: linear-gradient(135deg, rgba(172,109,255,0.22), rgba(101,139,255,0.2));
  border-color: rgba(255,255,255,0.18); transform: translateY(-2px); box-shadow: 0 22px 48px rgba(70,61,181,0.18);
}
.priority-card h3,
.question-card h3,
.category-main h3,
.category-side h3,
.route-card h3,
.footer-col a,
.footer-brand .brand__text {
  transition: background 0.22s ease, color 0.22s ease, -webkit-text-fill-color 0.22s ease;
}
.priority-card:hover h3,
.question-card:hover h3,
.category-main:hover h3,
.category-side:hover h3,
.route-card:hover h3,
.footer-col a:hover,
.footer-brand:hover .brand__text {
  background: linear-gradient(135deg, #ffd6f3 0%, #d7b8ff 48%, #9bddff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent; -webkit-text-fill-color: transparent;
}
.priority-card:hover .icon,
.question-card:hover .icon,
.category-main:hover .icon,
.category-side:hover .icon,
.route-card:hover .icon {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.24), 0 18px 38px rgba(90,72,214,0.28);
  border-color: rgba(255,255,255,0.18);
}
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer-col { display: grid; gap: 12px; }
.footer-panel { position: relative; overflow: hidden; }
.footer-panel::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,0.32), rgba(255,255,255,0));
}
.footer-brand { padding-right: 12px; }
.footer-brand p { max-width: 360px; }
.footer-col strong {
  display: inline-flex; align-items: center; min-height: 32px; margin-bottom: 8px; padding: 0 12px;
  border-radius: 999px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.1);
  font-size: 13px; letter-spacing: 0.04em;
}
.footer-col a,
.footer-col span { display: block; padding-left: 2px; }
.footer-bottom {
  margin-top: 24px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,0.08); color: rgba(237,245,255,0.72); font-size: 13px; letter-spacing: 0.01em;
}
@media (max-width: 980px) {
  .priority-grid,
  .category-layout,
  .route-grid,
  .footer-grid,
  .cta-panel {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 780px) {
  .site-header__inner { flex-wrap: wrap; padding: 14px 0; }
  .nav { width: 100%; flex-wrap: wrap; gap: 14px 18px; }
  .hero-intro,
  .faq-nav-panel,
  .priority-panel,
  .route-panel,
  .cta-panel,
  .footer-panel,
  .category-panel,
  .category-main,
  .category-side,
  .question-card,
  .route-card {
    padding: 22px;
  }
  h1 { font-size: 38px; }
}