:root {
  color-scheme: light;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #15171a;
  background: #f7f8fa;
  font-synthesis: none;
}
* { box-sizing: border-box; }
body { margin: 0; background: #f7f8fa; color: #15171a; }
a { color: #0868e8; text-underline-offset: 3px; }
.shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.topbar { height: 72px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #dfe3e8; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #15171a; text-decoration: none; font-weight: 750; }
.brand img { width: 28px; height: 28px; }
.topbar nav { display: flex; gap: 22px; font-size: 14px; }
.topbar nav a { color: #555d68; text-decoration: none; }
.hero { padding: 92px 0 60px; border-bottom: 1px solid #dfe3e8; }
.eyebrow { margin: 0 0 16px; color: #0868e8; font: 700 12px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; text-transform: uppercase; letter-spacing: 0; }
h1 { max-width: 860px; margin: 0; font-size: clamp(46px, 7vw, 88px); line-height: .98; letter-spacing: 0; }
.lead { max-width: 760px; margin: 28px 0 0; color: #5f6670; font-size: 20px; line-height: 1.65; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; min-height: 44px; align-items: center; padding: 0 18px; border: 1px solid #cfd5dc; border-radius: 7px; color: #15171a; background: #fff; text-decoration: none; font-weight: 700; }
.button.primary { border-color: #0868e8; color: white; background: #0868e8; }
.section { padding: 64px 0; border-bottom: 1px solid #dfe3e8; }
.section h2 { max-width: 760px; margin: 0 0 14px; font-size: clamp(30px, 4vw, 50px); line-height: 1.08; letter-spacing: 0; }
.section > p, .section .intro { max-width: 800px; color: #5f6670; line-height: 1.75; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 28px; }
.card { min-height: 210px; padding: 24px; border: 1px solid #d9dee5; border-radius: 8px; background: #fff; }
.card h3 { margin: 0 0 12px; font-size: 19px; }
.card p, .card li { color: #5f6670; line-height: 1.6; }
.card code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
pre { overflow: auto; padding: 18px; border-radius: 7px; color: #e9f2ff; background: #111a27; line-height: 1.55; }
.notice { padding: 18px 20px; border-left: 3px solid #23a36d; background: #eef9f4; color: #285243; line-height: 1.6; }
footer { padding: 28px 0 46px; color: #6b7280; font-size: 14px; }
@media (max-width: 760px) {
  .shell { width: min(100% - 28px, 1120px); }
  .topbar { height: auto; min-height: 68px; gap: 16px; }
  .topbar nav { gap: 12px; font-size: 13px; }
  .hero { padding: 64px 0 44px; }
  .lead { font-size: 18px; }
  .grid { grid-template-columns: 1fr; }
  .card { min-height: 0; }
}