:root {
  --navy: #1b3f6b;
  --navy-deep: #12304f;
  --sky: #5ba4e6;
  --ground: #f2f4f8;
  --card: #ffffff;
  --text: #14213d;
  --text2: #4a5568;
  --line: #dde3ec;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0d1626;
    --card: #17233a;
    --text: #eef2f8;
    --text2: #a9b6c9;
    --line: #26344d;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--ground);
  color: var(--text);
  line-height: 1.55;
}
a { color: var(--sky); }
header.hero {
  background: var(--navy);
  color: #fff;
  padding: 56px 20px 64px;
  text-align: center;
}
.logo { display: inline-flex; align-items: center; gap: 12px; font-size: 40px; font-weight: 700; letter-spacing: -0.5px; }
.logo span { color: var(--sky); }
.logo svg { width: 44px; height: 44px; }
.tag { margin: 6px 0 0; letter-spacing: 3px; font-size: 13px; opacity: 0.8; }
.soon { display: inline-block; margin: 18px 0 0; padding: 6px 14px; border: 1px solid rgba(255,255,255,0.4); border-radius: 999px; font-size: 14px; }
.lead { max-width: 560px; margin: 28px auto 0; font-size: 20px; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 48px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--text2); }
h2 { font-size: 22px; margin: 40px 0 12px; }
.doc h2 { font-size: 19px; margin: 28px 0 8px; }
.doc p, .doc li { color: var(--text2); }
.doc strong { color: var(--text); }
footer { border-top: 1px solid var(--line); padding: 20px 16px 40px; text-align: center; color: var(--text2); font-size: 14px; }
footer a { margin: 0 8px; }
.top { background: var(--navy); padding: 16px 20px; }
.top a { color: #fff; text-decoration: none; font-weight: 700; font-size: 20px; }
.top a span { color: var(--sky); }