:root {
  --bg: #fbfaf8;
  --surface: #ffffff;
  --text: #1d1b22;
  --muted: #5d5a66;
  --line: #e6e2ea;
  --accent: #5b2a86;
  --soft: #f1ebf7;
  --warn-bg: #fff6e0;
  --warn-line: #ecd48a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141218;
    --surface: #1c1922;
    --text: #f0edf4;
    --muted: #a9a4b4;
    --line: #2e2a37;
    --accent: #b58be0;
    --soft: #241e2e;
    --warn-bg: #2b2412;
    --warn-line: #5c4b1c;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header.top { padding: 22px 0; border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { font-weight: 700; font-size: 20px; letter-spacing: -0.01em; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 20px; font-size: 15px; }
nav a:hover { color: var(--text); }
main { padding: 40px 0 24px; }
h1 { font-size: clamp(30px, 5vw, 40px); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 8px; }
.meta { color: var(--muted); font-size: 15px; margin: 0 0 24px; }
.draft {
  background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: 12px;
  padding: 14px 18px; margin: 0 0 32px; font-size: 15.5px;
}
h2 { font-size: 21px; letter-spacing: -0.01em; margin: 36px 0 8px; }
p, li { color: var(--text); }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }
a { color: var(--accent); }
.note { color: var(--muted); font-size: 15px; }
footer { border-top: 1px solid var(--line); padding: 28px 0 48px; color: var(--muted); font-size: 14.5px; }
footer p { margin: 0 0 8px; }