:root {
  color-scheme: light dark;
  --bg: #090d18;
  --surface: rgba(255,255,255,.07);
  --line: rgba(255,255,255,.13);
  --text: #f5f7ff;
  --muted: #aab2ca;
  --accent: #7c9cff;
  --accent2: #66e1c5;
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 0%, rgba(124,156,255,.2), transparent 34rem),
    radial-gradient(circle at 90% 30%, rgba(102,225,197,.12), transparent 30rem),
    var(--bg);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
}
a { color: #a9bcff; text-underline-offset: 3px; }
.shell { width: min(1080px, calc(100% - 40px)); margin: auto; }
.hero { padding: 110px 0 70px; max-width: 800px; }
.app-icon {
  display: grid; place-items: center; width: 72px; height: 72px; margin-bottom: 30px;
  border: 1px solid var(--line); border-radius: 19px; font-size: 42px; font-weight: 300;
  background: linear-gradient(145deg, rgba(124,156,255,.35), rgba(102,225,197,.18));
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.eyebrow { margin: 0 0 10px; color: var(--accent2); font-size: 13px; font-weight: 700; letter-spacing: .16em; }
h1 { margin: 0 0 18px; font-size: clamp(42px, 7vw, 72px); line-height: 1.08; letter-spacing: -.045em; }
h2 { margin: 44px 0 10px; font-size: 24px; line-height: 1.3; letter-spacing: -.02em; }
.lead { margin: 0; color: var(--muted); font-size: 22px; }
.lead.small { font-size: 19px; }
.actions { display: flex; gap: 12px; margin-top: 34px; }
.actions a, a.primary {
  display: inline-block; padding: 11px 18px; border: 1px solid var(--line); border-radius: 12px;
  color: var(--text); background: var(--surface); text-decoration: none; font-weight: 650;
}
.actions a.primary, a.primary { color: #071017; border-color: transparent; background: linear-gradient(135deg, var(--accent), var(--accent2)); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cards article { padding: 25px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.cards h2 { margin: 0 0 8px; font-size: 19px; }
.cards p, .updated, footer { color: var(--muted); }
.topnav { display: flex; justify-content: space-between; margin-bottom: 70px; }
.topnav a { text-decoration: none; }
.document { max-width: 760px; padding: 55px 0; }
.document h1 { font-size: clamp(40px, 7vw, 62px); }
.document p, .document li { color: #d6daea; }
.document li { margin: 8px 0; }
.updated { margin-top: -8px !important; }
.contact { margin-top: 52px; padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.contact h2 { margin-top: 0; }
.email { margin-bottom: 0; font-size: 14px; }
footer { margin-top: 80px; padding: 30px 0; border-top: 1px solid var(--line); font-size: 14px; }
@media (max-width: 720px) {
  .hero { padding-top: 70px; }
  .cards { grid-template-columns: 1fr; }
  .actions { flex-wrap: wrap; }
}