:root {
  color-scheme: light dark;
  --background: #f2f0ed;
  --surface: #ffffff;
  --text: #252323;
  --muted: #676263;
  --border: #ddd7d2;
  --accent: #1f7652;
  --notice: #f7f2e8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #1c1b1b;
    --surface: #2e2c2c;
    --text: #f7f7f7;
    --muted: #b8b5bd;
    --border: #494646;
    --accent: #83d3aa;
    --notice: #373434;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}
main {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 72px;
}
.document {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: clamp(24px, 5vw, 48px);
}
.brand { margin-bottom: 18px; color: var(--muted); font-weight: 700; }
h1, h2, h3 { margin: 0; line-height: 1.2; }
h1 { margin-bottom: 8px; font-size: clamp(34px, 7vw, 52px); }
h2 { margin-top: 40px; margin-bottom: 14px; font-size: clamp(24px, 4vw, 31px); }
h3 { margin-top: 26px; margin-bottom: 8px; font-size: 21px; }
p { margin: 0 0 16px; }
ul, ol { margin: 0 0 18px; padding-left: 24px; }
li { margin: 5px 0; }
a { color: var(--accent); }
.updated { margin-bottom: 26px; color: var(--muted); font-size: 15px; }
.notice {
  margin: 24px 0;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--notice);
}
.footer {
  margin-top: 42px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 15px;
}