:root {
  --bg: #f4f8ff;
  --text: #172033;
  --muted: #5d6c8a;
  --brand: #2a8bf2;
  --brand-dark: #1467c2;
  --card: #ffffff;
  --line: #dce5f5;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 500px at 20% -10%, #d5e9ff 0, transparent 65%), var(--bg);
  line-height: 1.6;
}
.container { width: min(1080px, 92%); margin: 0 auto; }
.hero { padding-bottom: 2rem; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 0;
}
.brand { color: var(--text); text-decoration: none; font-weight: 700; }
.nav-links a { margin-left: 1rem; color: var(--muted); text-decoration: none; }
.hero-content { padding: 2.2rem 0 1.2rem; }
.eyebrow { color: var(--brand-dark); font-weight: 600; letter-spacing: .03em; }
h1 { font-size: clamp(1.8rem, 2.6vw, 3rem); line-height: 1.2; margin: .4rem 0; }
.lead { max-width: 760px; color: var(--muted); }
.cta-row { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1rem; }
.btn {
  display: inline-block; padding: .72rem 1rem; border-radius: .7rem;
  text-decoration: none; font-weight: 600; border: 1px solid transparent;
}
.btn.primary { background: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-dark); }
.btn.ghost { border-color: var(--line); color: var(--text); background: #fff; }
.risk-note { font-size: .92rem; color: #8a4a4a; margin-top: .8rem; }
.cards {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .9rem;
  margin: 1.2rem 0;
}
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: .9rem;
  padding: 1rem;
}
.card h2 { margin: 0 0 .5rem; font-size: 1.1rem; }
.card a { color: var(--brand-dark); text-decoration: none; font-weight: 600; }
.seo-block, .faq {
  background: #fff; border: 1px solid var(--line); border-radius: .9rem;
  padding: 1rem 1.1rem; margin: .9rem 0;
}
.footer {
  margin-top: 2rem; border-top: 1px solid var(--line); background: #fff;
}
.footer-wrap {
  display: flex; justify-content: space-between; gap: 1rem; padding: .9rem 0;
  flex-wrap: wrap;
}
@media (max-width: 840px) {
  .cards { grid-template-columns: 1fr; }
}