:root {
  color-scheme: dark;
  --bg: #0b0f14;
  --panel: #131921;
  --line: rgba(255, 255, 255, 0.08);
  --text: #e8edf2;
  --muted: #9aa6b2;
  --accent: #2bd4a4;
  --accent-soft: rgba(43, 212, 164, 0.12);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(1100px 560px at 50% -15%, #10392f 0, var(--bg) 60%) var(--bg);
  color: var(--text);
  font: 16px/1.65 "Segoe UI", system-ui, -apple-system, sans-serif;
}
a { color: var(--accent); }
header, main, footer { width: min(860px, 92vw); margin: 0 auto; }
header { display: flex; align-items: center; justify-content: space-between; padding: 28px 0; }
.brand { font-weight: 800; letter-spacing: 0.12em; color: var(--accent); text-decoration: none; font-size: 18px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 22px; font-size: 14px; }
nav a:hover, nav a[aria-current] { color: var(--text); }
.hero { padding: 56px 0 36px; }
.hero h1 { font-size: clamp(34px, 5vw, 52px); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 16px; }
.hero p { color: var(--muted); font-size: 18px; max-width: 640px; margin: 0; }
.cta { display: inline-block; margin-top: 26px; padding: 11px 20px; border-radius: 999px; background: var(--accent);
       color: #062519; font-weight: 600; text-decoration: none; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin: 30px 0 10px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; }
.card h3 { margin: 0 0 6px; font-size: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }
.note { background: var(--accent-soft); border: 1px solid rgba(43, 212, 164, 0.3); border-radius: 14px; padding: 16px 20px; margin: 22px 0; }
article h1 { font-size: 34px; letter-spacing: -0.01em; margin: 24px 0 4px; }
article h2 { font-size: 20px; margin: 34px 0 8px; }
article .meta { color: var(--muted); font-size: 14px; }
article li { margin: 4px 0; }
code { background: rgba(255, 255, 255, 0.06); padding: 1px 6px; border-radius: 6px; font-size: 0.92em; }
footer { padding: 40px 0 50px; color: var(--muted); font-size: 13.5px; border-top: 1px solid var(--line); margin-top: 50px; }
footer a { color: var(--muted); margin-right: 16px; }