:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #69758a;
  --line: #e4e8f0;
  --paper: #ffffff;
  --wash: #f6f7fb;
  --accent: #5f5cff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--wash);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
a { color: inherit; }
.shell { width: min(960px, calc(100% - 40px)); margin: 0 auto; }
header { padding: 28px 0; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; text-decoration: none; }
.mark { width: 36px; height: 36px; border-radius: 11px; background: var(--ink); display: grid; place-items: center; }
.mark::after { content: ""; width: 14px; height: 14px; border: 2px solid #aeb7ff; transform: rotate(45deg); }
nav { float: right; display: flex; gap: 20px; font-size: 14px; color: var(--muted); }
nav a { text-decoration: none; }
.hero { min-height: 68vh; display: grid; align-content: center; padding: 72px 0 110px; }
.eyebrow { color: var(--accent); font-weight: 750; letter-spacing: .08em; font-size: 13px; }
h1 { font-size: clamp(46px, 8vw, 82px); line-height: 1.08; letter-spacing: -.045em; margin: 16px 0; }
.lead { color: var(--muted); font-size: clamp(20px, 3vw, 28px); margin: 0; }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 28px; padding: clamp(28px, 5vw, 54px); box-shadow: 0 18px 60px rgba(17,24,39,.06); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; padding-bottom: 100px; }
.feature { background: var(--paper); border: 1px solid var(--line); border-radius: 20px; padding: 24px; }
.feature h2 { margin: 0 0 8px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); }
.document { padding: 38px 0 90px; }
.document h1 { font-size: clamp(36px, 6vw, 58px); }
.document h2 { margin-top: 36px; font-size: 22px; }
.document p, .document li { color: #48556a; }
.meta { color: var(--muted); }
footer { border-top: 1px solid var(--line); padding: 28px 0 48px; color: var(--muted); font-size: 14px; }
footer .shell { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
footer a { margin-right: 16px; }
@media (max-width: 700px) { nav { float: none; margin-top: 18px; } .grid { grid-template-columns: 1fr; } }