:root {
  --bg: #07111f;
  --panel: #101b2d;
  --text: #f7f9fc;
  --muted: #aeb8c8;
  --accent: #2f7df6;
  --border: #22314a;
  --max: 920px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: linear-gradient(180deg, #07111f 0%, #0a1527 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
}
a { color: #6ea8ff; text-decoration: none; }
a:hover { text-decoration: underline; }
header {
  border-bottom: 1px solid var(--border);
  background: rgba(7,17,31,.88);
  position: sticky;
  top: 0;
  backdrop-filter: blur(14px);
  z-index: 10;
}
.nav {
  max-width: var(--max);
  margin: auto;
  padding: 18px 22px;
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
}
.brand { font-weight: 800; letter-spacing: -.02em; }
.links { display: flex; gap: 16px; flex-wrap: wrap; font-size: 14px; }
main { max-width: var(--max); margin: auto; padding: 48px 22px 70px; }
.hero {
  background: radial-gradient(circle at top right, rgba(47,125,246,.22), transparent 38%), var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 34px;
  margin-bottom: 28px;
}
h1 { font-size: clamp(34px, 6vw, 54px); line-height: 1.08; margin: 0 0 12px; letter-spacing: -.03em; }
h2 { font-size: 24px; margin-top: 36px; }
h3 { font-size: 18px; margin-top: 26px; }
p, li { color: var(--muted); }
strong { color: var(--text); }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  margin: 18px 0;
}
.badge {
  display: inline-block;
  background: rgba(47,125,246,.15);
  color: #8db8ff;
  border: 1px solid rgba(47,125,246,.35);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}
.notice {
  border-left: 4px solid var(--accent);
  padding: 14px 18px;
  background: rgba(47,125,246,.08);
  border-radius: 10px;
  color: var(--muted);
}
footer {
  border-top: 1px solid var(--border);
  color: #8390a4;
  padding: 28px 22px 42px;
  text-align: center;
  font-size: 13px;
}
ul { padding-left: 22px; }
code {
  background: #0b1628;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 2px 6px;
}
@media (max-width: 640px) {
  .nav { align-items: flex-start; flex-direction: column; }
  .hero { padding: 24px; }
  main { padding-top: 28px; }
}