:root {
  --bg: #FAF9F5;
  --surface: #FFFFFF;
  --surface-2: #F0EEE6;
  --text: #3D3929;
  --text-2: #8A8778;
  --border: #E3DFD3;
  --accent: #C6613F;
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #262624;
    --surface: #30302E;
    --surface-2: #3A3A37;
    --text: #F0EFEA;
    --text-2: #A3A19A;
    --border: #3F3F3C;
    --accent: #D97757;
  }
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--text);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.serif { font-family: "New York", "Iowan Old Style", Georgia, "Times New Roman", serif; }
.wrap { max-width: 760px; margin: 0 auto; padding: 24px; }
nav { display: flex; align-items: center; padding: 20px 0; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 17px; text-decoration: none; color: inherit; }
.brand .spark { color: var(--accent); font-size: 20px; }
.doc { padding: 24px 0 48px; }
.doc h1 { font-size: clamp(28px, 4vw, 38px); font-weight: 600; letter-spacing: -0.02em; }
.doc .updated { color: var(--text-2); font-size: 14px; margin: 8px 0 32px; }
.doc h2 { font-size: 20px; font-weight: 600; margin: 34px 0 10px; letter-spacing: -0.01em; }
.doc h3 { font-size: 16px; font-weight: 600; margin: 22px 0 6px; }
.doc p, .doc li { color: var(--text); font-size: 15.5px; }
.doc p { margin: 10px 0; }
.doc ul { margin: 10px 0 10px 22px; display: grid; gap: 6px; }
.doc a { color: var(--accent); }
.doc strong { font-weight: 600; }
.doc .fill { background: color-mix(in srgb, var(--accent) 16%, transparent); border-radius: 4px; padding: 0 4px; font-weight: 600; }
.doc .note { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; margin: 18px 0; font-size: 14.5px; color: var(--text-2); }
footer { border-top: 1px solid var(--border); padding: 28px 0 44px; font-size: 12.5px; color: var(--text-2); text-align: center; }
footer a { color: inherit; }
footer nav { display: flex; gap: 16px; justify-content: center; padding: 0 0 12px; flex-wrap: wrap; }