:root { --bg: #f4f5f7; --panel: #fff; --line: #e3e6ea; --text: #1d2228; --muted: #6b7480; --accent: #2f6fde; --warn-bg: #fff6e0; --warn-line: #e8c46a; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #14171b; --panel: #1c2025; --line: #2e343b; --text: #e6e9ed; --muted: #8e98a3; --accent: #4a86ee; --warn-bg: #2e2715; --warn-line: #7a6228; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.6 "Segoe UI", system-ui, sans-serif; }
header { display: flex; gap: 16px; align-items: center; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
header b { font-size: 16px; }
header a { font-size: 14px; }
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 18px; margin: 28px 0 6px; }
h3 { font-size: 15px; margin: 18px 0 4px; }
.muted { color: var(--muted); font-size: 13px; }
a { color: var(--accent); }
.draft { background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: 8px; padding: 10px 14px; margin: 16px 0; font-size: 14px; }
code { background: var(--panel); border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; font-size: 13px; }
nav.toc { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; margin: 16px 0; }
nav.toc ol { margin: 0; padding-left: 20px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; border-bottom: 1px solid var(--line); padding: 6px 8px; vertical-align: top; }
/* phones: long links and codes wrap, wide tables scroll inside themselves */
code { overflow-wrap: anywhere; }
main { overflow-wrap: break-word; }
@media (max-width: 600px) { table { display: block; overflow-x: auto; } }