:root {
  color-scheme: dark;
  --bg: #090b0f;
  --panel: #111720;
  --text: #f3f6f8;
  --muted: #aab3bd;
  --accent: #b6ff3b;
  --line: rgba(182, 255, 59, 0.22);
  --danger: #ff3b55;
  --link: #7cc7ff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(182,255,59,0.14), transparent 30rem),
    radial-gradient(circle at 85% 10%, rgba(124,199,255,0.10), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
header {
  padding: 56px 20px 24px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(17, 23, 32, 0.86), rgba(9, 11, 15, 0.72));
}
main, .wrap {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}
main { padding: 28px 0 64px; }
.brand {
  display: inline-flex;
  color: var(--accent);
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 13px;
}
h1 {
  margin: 14px 0 8px;
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}
h2 {
  margin: 42px 0 12px;
  font-size: clamp(23px, 3.5vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.025em;
}
h3 {
  margin: 24px 0 8px;
  color: var(--accent);
}
p, li { color: var(--muted); }
strong { color: var(--text); }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
.card {
  background: linear-gradient(180deg, rgba(17,23,32,0.90), rgba(13,17,24,0.86));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  margin: 18px 0;
  box-shadow: 0 22px 70px rgba(0,0,0,0.28);
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.danger { border-left: 4px solid var(--danger); padding-left: 16px; }
footer {
  padding: 32px 20px 56px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: rgba(0,0,0,0.18);
}