:root {
  --bg: #f6f9fc;
  --surface: #ffffff;
  --ink: #0b172a;
  --slate: #5b6b82;
  --border: #e3e9f1;
  --primary: #2f80d8;
  --warn-bg: #fff7e0;
  --warn-ink: #7a5600;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --surface: #111b2d;
    --ink: #e8eef7;
    --slate: #93a3ba;
    --border: #1f2c42;
    --primary: #5aa2ee;
    --warn-bg: #2d2410;
    --warn-ink: #f2cf72;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 40px 16px 80px;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 720px; margin: 0 auto; }
header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 40px; }
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-weight: 700; letter-spacing: 0.06em; text-decoration: none; }
.brand svg { width: 26px; height: 26px; }
.brand polygon { fill: none; stroke: currentColor; stroke-width: 2; stroke-linejoin: round; }
.brand circle { fill: var(--bg); stroke: currentColor; stroke-width: 2; }
.lang a { color: var(--slate); text-decoration: none; font-size: 14px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 6px; }
h2 { font-size: 19px; margin: 36px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 4px; }
p, li { color: var(--ink); }
.muted { color: var(--slate); font-size: 14px; }
a { color: var(--primary); }
ul { padding-left: 22px; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 14px; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--slate); font-weight: 600; }
.draft { background: var(--warn-bg); color: var(--warn-ink); border-radius: 10px; padding: 12px 14px; font-size: 14px; margin-bottom: 28px; }
.todo { background: var(--warn-bg); color: var(--warn-ink); padding: 0 4px; border-radius: 4px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 18px 20px; margin: 12px 0; }
footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border); color: var(--slate); font-size: 13px; }