:root {
  --bg: #F8F5EF;
  --card: #FFFDFA;
  --ink: #292420;
  --sub: #756B62;
  --line: #E5DDD2;
  --brand: #A82020;
  --brand-ink: #851919;
  --soft: #F8E9E5;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1B1816; --card: #24201D; --ink: #EEE8E0; --sub: #A89D92; --line: #3A3430;
    --brand: #E0675C; --brand-ink: #F0948A; --soft: #3A2421;
  }
}
:root[data-theme="dark"] {
  --bg: #1B1816; --card: #24201D; --ink: #EEE8E0; --sub: #A89D92; --line: #3A3430;
  --brand: #E0675C; --brand-ink: #F0948A; --soft: #3A2421;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.8 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 32px 16px 72px; }
.top { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; text-decoration: none; color: inherit; }
.top img { width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line); }
.top b { font-size: 17px; }
.top span { color: var(--sub); font-size: 14px; }
h1 { font-size: 26px; line-height: 1.4; margin: 0 0 8px; }
.meta { color: var(--sub); font-size: 14px; margin: 0 0 24px; }
h2 { font-size: 19px; margin: 32px 0 10px; }
h3 { font-size: 16px; margin: 20px 0 6px; }
p { margin: 0 0 12px; }
ul, ol { margin: 0 0 12px; padding-left: 1.3em; }
li { margin: 4px 0; }
strong { font-weight: 600; }
a { color: var(--brand-ink); text-underline-offset: 3px; }
.note { background: var(--soft); border-radius: 14px; padding: 14px 16px; margin: 0 0 16px; }
.doc { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 4px 18px 12px; }
.tw { overflow-x: auto; margin: 0 0 12px; }
table { border-collapse: collapse; font-size: 14.5px; min-width: 100%; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--soft); font-weight: 600; }
footer { margin-top: 40px; color: var(--sub); font-size: 14px; }
footer a { margin-right: 16px; }