:root {
  --bg: #ffffff;
  --muted-bg: #f4f4f5;
  --text: #141416;
  --muted: #6b6b70;
  --border: #e6e6e8;
  --accent: #2f7d5b;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0d;
    --muted-bg: #18181b;
    --text: #f4f4f5;
    --muted: #a1a1aa;
    --border: #2c2c31;
    --accent: #4fae84;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 32px 20px 64px; }
header.site { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; margin-bottom: 40px; }
header.site a.brand { color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: -0.2px; white-space: nowrap; }
nav.links { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 14px; }
nav.links a { color: var(--muted); text-decoration: none; }
nav.links a:hover, nav.links a[aria-current="page"] { color: var(--text); }
h1 { font-size: 30px; line-height: 1.2; letter-spacing: -0.4px; margin: 0 0 8px; }
h2 { font-size: 20px; line-height: 1.3; margin: 36px 0 8px; }
h3 { font-size: 16px; margin: 24px 0 4px; }
p, li { color: var(--text); }
.sub { color: var(--muted); margin: 0 0 24px; }
.note {
  background: var(--muted-bg);
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 28px;
}
a { color: var(--accent); }
ul { padding-left: 20px; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 14px; }
th, td { text-align: left; vertical-align: top; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
.card {
  display: block;
  background: var(--muted-bg);
  border-radius: 16px;
  padding: 18px;
  color: var(--text);
  text-decoration: none;
  margin: 12px 0;
}
.card strong { display: block; margin-bottom: 4px; }
.card span { color: var(--muted); font-size: 14px; }
.button {
  display: inline-block;
  background: var(--text);
  color: var(--bg);
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 600;
  text-decoration: none;
}
footer.site { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border); font-size: 13px; color: var(--muted); }
footer.site a { color: var(--muted); }
.todo { background: #fff3cd; color: #5c4400; padding: 0 4px; border-radius: 4px; }
@media (prefers-color-scheme: dark) { .todo { background: #4a3b00; color: #ffe49a; } }