:root {
  --bg: #f7f8f6; --card: #ffffff; --text: #17221b; --muted: #5c6b60; --accent: #0e7a3c; --border: #d9e2db; --quote: #f0f4f1;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e1512; --card: #16201b; --text: #f2ede2; --muted: #a8b0a6; --accent: #2ecc71; --border: #2a3630; --quote: #1d2a24; }
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 32px 16px; background: var(--bg); color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
body.doc { align-items: flex-start; }
main { width: 100%; max-width: 680px; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 40px 32px; }
h1 { margin: 0 0 12px; font-size: 2rem; line-height: 1.2; letter-spacing: -0.01em; }
h2 { margin: 28px 0 8px; font-size: 1.15rem; }
p { margin: 0 0 14px; }
.muted, .updated { color: var(--muted); }
.updated { font-size: 0.9rem; margin-bottom: 20px; }
ul.links { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 10px; }
ul.plain { padding-left: 1.2em; margin: 0 0 14px; }
ul.plain li { margin-bottom: 6px; }
a { color: var(--accent); font-weight: 600; text-underline-offset: 3px; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.label { display: block; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.quote { background: var(--quote); border-left: 4px solid var(--accent); border-radius: 8px; padding: 14px 16px; margin: 0 0 14px; }
.sample { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.92rem; }
.callout { border: 1px solid var(--accent); border-radius: 10px; padding: 12px 14px; margin: 0 0 14px; font-weight: 600; }
footer { margin-top: 32px; font-size: 0.85rem; color: var(--muted); }
footer nav { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-bottom: 8px; }
footer nav a { font-weight: 500; }
@media (max-width: 480px) { main { padding: 28px 20px; } h1 { font-size: 1.6rem; } }