:root {
  color-scheme: light;
  --navy: #0b1638;
  --blue: #1778f2;
  --cyan: #42d3ff;
  --canvas: #f7f9fc;
  --muted: #61708a;
  --border: #dce4ef;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--navy);
  background:
    radial-gradient(circle at 90% 0%, rgba(66, 211, 255, .18), transparent 32rem),
    var(--canvas);
  font-family: "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif;
}
main { width: min(980px, calc(100% - 32px)); margin: 0 auto; padding: 72px 0; }
header { display: flex; align-items: center; gap: 28px; margin-bottom: 40px; }
header img { width: 128px; height: 128px; }
h1 { margin: 0; font-size: clamp(2.3rem, 7vw, 4.7rem); letter-spacing: -.05em; }
h2 { margin-top: 0; }
p, li { line-height: 1.75; }
.eyebrow { margin: 0 0 8px; color: var(--blue); font-weight: 800; letter-spacing: .18em; }
.lead { max-width: 650px; margin: 12px 0 0; color: var(--muted); font-size: 1.1rem; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin: 20px 0; }
.card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: rgba(255, 255, 255, .9);
  box-shadow: 0 18px 50px rgba(11, 22, 56, .07);
}
.primary { color: white; border: 0; background: linear-gradient(135deg, var(--navy), var(--blue)); }
.note { background: #eef5ff; }
a {
  display: inline-block;
  margin-top: 8px;
  padding: 11px 16px;
  border-radius: 12px;
  color: white;
  background: var(--blue);
  font-weight: 750;
  text-decoration: none;
}
.primary a { color: var(--navy); background: white; }
.back { margin-bottom: 32px; color: var(--blue); background: transparent; padding: 0; }
ol { margin: 0; padding-left: 1.5rem; }
@media (max-width: 680px) {
  main { padding: 42px 0; }
  header { align-items: flex-start; }
  header img { width: 82px; height: 82px; }
  .grid { grid-template-columns: 1fr; }
}