:root {
  --paper: #fbf9f4;
  --ink: #17130f;
  --title: #622124;
  --sub: #884245;
  --rule: #cfc7b8;
  --soft: #635749;
  --card: #f4efe4;
  --ok: #2f6b3b;
  --warn: #9a6a00;
  --bad: #a0281f;
  --idle: #6b6458;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.8 system-ui, "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", sans-serif;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
a { color: var(--title); text-underline-offset: 3px; }
a:hover { color: var(--sub); }
h1, h2, h3, h4 { font-family: "Noto Serif TC", "Source Han Serif TC", "PMingLiU", "Songti TC", serif; color: var(--title); line-height: 1.4; }
h1 { font-size: 1.7rem; margin: 1.2rem 0 .4rem; }
h2 { font-size: 1.35rem; margin: 2.2rem 0 .6rem; padding-top: .8rem; border-top: 1px solid var(--rule); }
h3 { font-size: 1.1rem; margin: 1.5rem 0 .4rem; color: var(--sub); }
h4 { font-size: 1rem; margin: 1.2rem 0 .3rem; color: var(--soft); }
p { margin: .6rem 0; }
.muted { color: var(--soft); font-size: .92rem; }
.top { border-bottom: 1px solid var(--rule); background: var(--paper); }
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .4rem 1rem; padding-top: .7rem; padding-bottom: .7rem; }
.brand { font-weight: 700; color: var(--title); text-decoration: none; letter-spacing: .05em; }
.top nav a { margin-left: 1.1rem; text-decoration: none; color: var(--soft); }
.top nav a:hover { color: var(--title); }
.foot { margin-top: 3rem; border-top: 1px solid var(--rule); color: var(--soft); font-size: .88rem; }
.foot .wrap { padding-top: 1rem; padding-bottom: 2rem; }
.foot p { margin: .2rem 0; }
.lead { font-size: 1.1rem; color: var(--soft); }
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 8px; padding: 1rem; }
.feature { display: flex; gap: 1.2rem; align-items: flex-start; margin: 1.5rem 0; }
.feature .cover img, .bookhead .cover { width: 150px; height: auto; display: block; border: 1px solid var(--rule); box-shadow: 0 2px 8px rgba(0,0,0,.15); }
.feature h2 { border: 0; margin: 0 0 .4rem; padding: 0; }
.feature h2 a { text-decoration: none; }
.btn { display: inline-block; padding: .5rem 1rem; background: var(--title); color: #fff; border-radius: 6px; text-decoration: none; font-size: .95rem; line-height: 1.5; }
.btn:hover { background: var(--sub); color: #fff; }
.books { padding-left: 1.2rem; }
.books li { margin: .5rem 0; }
.bookhead { display: flex; gap: 1.2rem; align-items: flex-start; margin-top: 1.2rem; }
.bookhead h1 { margin-top: 0; }
.sub { color: var(--sub); margin: 0 0 .8rem; }
.meta { display: grid; grid-template-columns: max-content 1fr; gap: .15rem .9rem; margin: 0; font-size: .95rem; }
.meta dt { color: var(--soft); }
.meta dd { margin: 0; }
.toc { display: flex; flex-wrap: wrap; gap: .4rem .5rem; margin: 1.2rem 0 0; }
.toc a { padding: .25rem .8rem; border: 1px solid var(--rule); border-radius: 999px; text-decoration: none; font-size: .92rem; background: var(--card); }
.strip, .banner { display: flex; align-items: center; gap: .6rem; margin: 1rem 0; padding: .55rem .9rem; border: 1px solid var(--rule); border-radius: 8px; background: var(--card); font-size: .95rem; }
.banner { font-size: 1.1rem; font-weight: 600; }
.dot { width: .7rem; height: .7rem; border-radius: 50%; background: var(--idle); flex: none; }
.s-ok .dot { background: var(--ok); }
.s-degraded .dot { background: var(--warn); }
.s-down .dot { background: var(--bad); }
.stale-note { color: var(--bad); font-size: .85rem; }
.empty { padding: .8rem 1rem; background: var(--card); border: 1px dashed var(--rule); border-radius: 6px; color: var(--soft); }
.errata { padding-left: 1.2rem; }
.sup { border: 1px solid var(--rule); border-radius: 8px; padding: .6rem .9rem; margin: .7rem 0; background: var(--card); }
.sup p { margin: .3rem 0 0; font-size: .95rem; }
.sup-h { display: flex; gap: .9rem; align-items: baseline; flex-wrap: wrap; }
.loc { font-weight: 700; color: var(--sub); font-variant-numeric: tabular-nums; }
.txt u { text-decoration-style: dotted; text-decoration-thickness: 2px; text-underline-offset: 5px; font-weight: 600; }
.tblwrap { margin: .4rem 0 1rem; }
table.ref { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.ref th, table.ref td { text-align: left; vertical-align: top; padding: .5rem .6rem; border-top: 1px solid var(--rule); }
table.ref th { color: var(--soft); background: var(--card); font-weight: 600; }
table.ref a { overflow-wrap: anywhere; }
.comps { list-style: none; padding: 0; margin: 1rem 0; }
.comp { border: 1px solid var(--rule); border-radius: 8px; padding: .6rem .9rem; margin: .6rem 0; background: var(--card); }
.comp-h { display: flex; justify-content: space-between; align-items: center; gap: .8rem; flex-wrap: wrap; }
.comp-m { font-size: .88rem; color: var(--soft); margin-top: .2rem; }
.badge { display: inline-block; padding: .05rem .6rem; border-radius: 999px; font-size: .82rem; color: #fff; background: var(--idle); line-height: 1.7; }
.b-ok { background: var(--ok); }
.b-degraded, .b-maintenance { background: var(--warn); }
.b-down { background: var(--bad); }
.incidents { padding-left: 1.2rem; }
@media (max-width: 560px) {
  body { font-size: 16px; }
  h1 { font-size: 1.45rem; }
  .feature, .bookhead { flex-direction: column; }
  .feature .cover img, .bookhead .cover { width: 130px; }
  table.ref, table.ref tbody, table.ref tr, table.ref th, table.ref td { display: block; width: 100%; }
  table.ref tr:first-child th { border-top: 0; }
  table.ref td { border-top: 0; padding-top: 0; }
  table.ref tr { border-top: 1px solid var(--rule); padding: .3rem 0; }
}