:root {
  color-scheme: dark;
  --bg: #071018;
  --surface: #0d1b27;
  --surface-2: #122536;
  --text: #eef7ff;
  --muted: #a8bdcd;
  --accent: #59d8ff;
  --accent-2: #9b8cff;
  --line: rgba(255, 255, 255, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(89, 216, 255, 0.16), transparent 32rem),
    radial-gradient(circle at 90% 20%, rgba(155, 140, 255, 0.13), transparent 28rem),
    var(--bg);
  color: var(--text);
  font: 16px/1.7 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--accent); }
.shell { width: min(920px, calc(100% - 32px)); margin: 0 auto; }
header { padding: 64px 0 32px; }
.eyebrow { color: var(--accent); font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
h1 { max-width: 720px; margin: 12px 0; font-size: clamp(2.4rem, 8vw, 5.3rem); line-height: .98; letter-spacing: -.055em; }
h2 { margin-top: 0; font-size: 1.55rem; }
h3 { margin-top: 28px; }
.lede { max-width: 680px; color: var(--muted); font-size: 1.12rem; }
nav { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
nav a { padding: 8px 13px; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; }
main { display: grid; gap: 18px; padding: 16px 0 72px; }
section { padding: clamp(22px, 5vw, 42px); background: rgba(13, 27, 39, .88); border: 1px solid var(--line); border-radius: 24px; box-shadow: 0 24px 70px rgba(0,0,0,.2); }
section:target { border-color: rgba(89, 216, 255, .55); }
ul { padding-left: 22px; }
.callout { margin: 22px 0; padding: 16px 18px; border-left: 3px solid var(--accent); background: var(--surface-2); border-radius: 4px 14px 14px 4px; }
.meta, footer { color: var(--muted); }
footer { padding: 0 0 48px; text-align: center; }
code { color: #dcd7ff; }
@media (max-width: 560px) { header { padding-top: 42px; } section { border-radius: 18px; } }