:root {
  --bg: #f2f5f9;
  --card: #ffffff;
  --ink: #0e1b3d;
  --text: #1e2a47;
  --muted: #6b7790;
  --teal: #0e7c80;
  --border: #e3e8f0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #08111f;
    --card: #111c2e;
    --ink: #eef2f8;
    --text: #d3dbe8;
    --muted: #8b98b0;
    --teal: #25a8a6;
    --border: #1f3049;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header img { width: 44px; height: 44px; border-radius: 10px; }
header a { color: var(--ink); text-decoration: none; font-weight: 800; font-size: 20px; }
nav { margin-left: auto; display: flex; gap: 16px; font-size: 15px; }
nav a { color: var(--teal); text-decoration: none; font-weight: 600; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 24px; }
h1 { color: var(--ink); font-size: 30px; line-height: 1.2; margin: 0 0 6px; }
h2 { color: var(--ink); font-size: 20px; margin: 28px 0 8px; }
h3 { color: var(--ink); font-size: 16px; margin: 18px 0 4px; }
.muted { color: var(--muted); font-size: 14px; }
a { color: var(--teal); }
ul { padding-left: 22px; }
li { margin: 4px 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 8px 0; }
th, td { text-align: left; vertical-align: top; padding: 8px 6px; border-bottom: 1px solid var(--border); }
th { color: var(--ink); }
.note { border-left: 3px solid var(--teal); padding: 4px 0 4px 12px; margin: 16px 0; }
footer { margin-top: 24px; text-align: center; }