:root {
  color-scheme: light;
  --ink: #1f2430;
  --muted: #636b7a;
  --brand: #4f46d7;
  --brand-dark: #3730a3;
  --surface: #ffffff;
  --soft: #f4f5fb;
  --line: #dde0ea;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--brand); }
.wrap { width: min(920px, calc(100% - 40px)); margin: 0 auto; }
header { border-bottom: 1px solid var(--line); }
nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { color: var(--ink); font-weight: 750; text-decoration: none; font-size: 1.12rem; }
.navlinks { display: flex; flex-wrap: wrap; gap: 18px; }
.navlinks a { color: var(--muted); text-decoration: none; font-size: .94rem; }
.hero { padding: 88px 0 76px; background: linear-gradient(145deg, #f7f7ff, #eef3ff); }
.eyebrow { color: var(--brand); font-weight: 750; letter-spacing: .08em; text-transform: uppercase; font-size: .8rem; }
h1 { max-width: 760px; margin: 12px 0 20px; font-size: clamp(2.4rem, 6vw, 4.8rem); line-height: 1.03; letter-spacing: -.045em; }
.lead { max-width: 680px; color: var(--muted); font-size: 1.18rem; }
.button { display: inline-block; margin-top: 18px; padding: 12px 20px; border-radius: 999px; color: white; background: var(--brand); text-decoration: none; font-weight: 700; }
.button:hover { background: var(--brand-dark); }
.features { padding: 68px 0; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.card h2 { margin-top: 0; font-size: 1.08rem; }
.card p { margin-bottom: 0; color: var(--muted); }
.page { padding: 58px 0 80px; }
.page h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
.page h2 { margin-top: 38px; font-size: 1.35rem; }
.page p, .page li { max-width: 780px; }
.meta { color: var(--muted); }
.notice { padding: 18px 20px; border-left: 4px solid var(--brand); background: var(--soft); border-radius: 8px; }
footer { padding: 30px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 18px; }
@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
  nav { align-items: flex-start; flex-direction: column; padding: 18px 0; }
  .hero { padding: 64px 0; }
}