* { box-sizing: border-box; }
:root {
  --bg: #f7f9fc;
  --text: #182033;
  --muted: #617089;
  --primary: #1f5eff;
  --primary-dark: #1748c7;
  --card: #ffffff;
  --line: #e6ebf2;
}
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  max-width: 1120px; margin: 0 auto; padding: 16px 24px;
  display: flex; justify-content: space-between; align-items: center;
}
.logo { font-weight: 800; font-size: 20px; }
.nav-links { display: flex; gap: 20px; font-size: 15px; color: var(--muted); }
.nav-links a:hover { color: var(--primary); }
.hero {
  background: radial-gradient(circle at top left, #e8efff 0, #f7f9fc 38%, #fff 100%);
  padding: 88px 24px 72px;
}
.hero-content { max-width: 1120px; margin: 0 auto; }
.tag {
  margin: 0 0 12px; color: var(--primary); font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase; font-size: 13px;
}
h1 { max-width: 920px; margin: 0; font-size: clamp(36px, 6vw, 64px); line-height: 1.12; letter-spacing: -.04em; }
.subtitle { max-width: 820px; margin: 24px 0; font-size: 20px; color: var(--muted); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin: 30px 0 14px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 22px; border-radius: 999px;
  font-weight: 700; border: 1px solid var(--line);
}
.btn.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn.primary:hover { background: var(--primary-dark); }
.btn.secondary { background: #fff; color: var(--text); }
.note { color: var(--muted); font-size: 14px; }
.section { max-width: 1120px; margin: 0 auto; padding: 72px 24px; }
.section.alt { max-width: none; background: #fff; }
.section.alt > * { max-width: 1120px; margin-left: auto; margin-right: auto; }
.section-title { margin-bottom: 30px; }
.section-title h2 { margin: 0; font-size: clamp(28px, 4vw, 42px); letter-spacing: -.03em; }
.section-title p:last-child { color: var(--muted); }
.grid { display: grid; gap: 20px; }
.cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 22px;
  padding: 24px; box-shadow: 0 10px 30px rgba(30, 50, 90, .06);
}
.card h3 { margin: 0 0 10px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }
.pill-list { display: flex; flex-wrap: wrap; gap: 14px; }
.pill-list span {
  display: inline-flex; padding: 10px 16px; border-radius: 999px;
  background: #f0f4ff; border: 1px solid #dbe5ff; color: #25416d; font-weight: 700;
}
.timeline { padding-left: 24px; margin: 0; }
.timeline li {
  margin: 0 0 18px; background: #fff; border: 1px solid var(--line);
  border-radius: 18px; padding: 18px 20px; color: var(--muted);
}
.timeline strong { color: var(--text); }
.contact { padding-bottom: 90px; }
.contact-box {
  background: #fff; border: 1px solid var(--line); border-radius: 26px;
  padding: 30px; max-width: 720px; box-shadow: 0 10px 30px rgba(30, 50, 90, .06);
}
.contact-box p { color: var(--muted); }
.footer { border-top: 1px solid var(--line); padding: 28px 24px; color: var(--muted); text-align: center; background: #fff; }
@media (max-width: 860px) {
  .nav { align-items: flex-start; gap: 14px; flex-direction: column; }
  .nav-links { flex-wrap: wrap; gap: 12px; }
  .cards { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; }
  .subtitle { font-size: 17px; }
}