/* 需求与开发文档 · 专业阅读版 */
.doc-page{
  --paper:#f7f3ec;
  --paper-2:#fffdf8;
  --ink:#1c1612;
  --ink-2:#4a423b;
  --mute:#7a7168;
  --line:#e6dccf;
  --gold:#b07d32;
  --gold-2:#d4a054;
  --wine:#8f3d48;
  --ok:#1f7a4c;
  --warn:#9a5b12;
  --chip:#efe6d6;
  background:var(--paper);
  color:var(--ink);
  scroll-padding-top:88px;
}
.doc-page .topbar{
  background:rgba(12,9,10,.94);
  color:#f7f1e8;
}
.doc-layout{
  display:grid;
  grid-template-columns:272px minmax(0,1fr);
  min-height:calc(100vh - 68px);
}
.doc-toc{
  position:sticky;
  top:68px;
  height:calc(100vh - 68px);
  overflow:auto;
  background:#efe8dc;
  border-right:1px solid var(--line);
  padding:22px 0 40px;
}
.doc-toc::-webkit-scrollbar{width:8px}
.doc-toc::-webkit-scrollbar-thumb{background:#d7cbb8;border-radius:8px}
.toc-head{
  padding:4px 22px 16px;
  border-bottom:1px solid var(--line);
  margin-bottom:10px;
}
.toc-head .tiny{color:var(--mute);letter-spacing:.12em;text-transform:uppercase;font-weight:700}
.toc-head b{display:block;margin-top:6px;font-size:15px}
.toc-group{
  padding:12px 14px 4px;
  font-size:10px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:#9a8f82;
  font-weight:800;
}
.toc-link{
  display:flex;
  align-items:baseline;
  gap:8px;
  padding:7px 18px 7px 22px;
  color:var(--ink-2);
  font-size:13px;
  line-height:1.35;
  border-left:2px solid transparent;
}
.toc-link span{color:#b3a89a;font-variant-numeric:tabular-nums;font-size:11px;min-width:22px}
.toc-link:hover{color:var(--ink);background:rgba(255,255,255,.35)}
.toc-link.active{
  color:var(--ink);
  background:#fffdf8;
  border-left-color:var(--gold);
  font-weight:700;
}
.toc-link.sub{padding-left:42px;font-size:12px;color:var(--mute)}
.toc-foot{
  margin:22px 16px 0;
  padding:12px;
  background:#fffdf8;
  border:1px solid var(--line);
  border-radius:14px;
  font-size:12px;
  color:var(--ink-2);
  line-height:1.55;
}
.toc-foot b{display:block;margin-bottom:4px;color:var(--ink)}
.doc-main{
  min-width:0;
  background:var(--paper);
}
.doc-article{
  max-width:980px;
  margin:0 auto;
  padding:36px 48px 120px;
}
.doc-cover{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:22px;
  padding:36px 40px 32px;
  margin-bottom:42px;
  box-shadow:0 18px 40px rgba(28,22,18,.04);
}
.doc-kicker{
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--gold);
  font-weight:800;
}
.doc-cover h1{
  font-size:34px;
  letter-spacing:-.03em;
  line-height:1.2;
  margin:10px 0 10px;
  font-weight:750;
}
.doc-cover .lead{
  font-size:16px;
  line-height:1.7;
  color:var(--ink-2);
  max-width:720px;
  margin:0 0 22px;
}
.meta-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
}
.meta-cell{
  background:var(--paper-2);
  padding:12px 14px;
}
.meta-cell span{
  display:block;
  font-size:11px;
  color:var(--mute);
  margin-bottom:4px;
}
.meta-cell b{font-size:13px;font-weight:700}
.doc-section{
  scroll-margin-top:88px;
  margin:0 0 46px;
}
.doc-cover{scroll-margin-top:88px}
.doc-section>h2{
  font-size:26px;
  letter-spacing:-.03em;
  margin:0 0 8px;
  padding-top:8px;
  display:flex;
  gap:12px;
  align-items:baseline;
}
.doc-section>h2 .no{
  color:var(--gold);
  font-variant-numeric:tabular-nums;
  font-size:18px;
  font-weight:800;
}
.doc-section .chap-lead{
  color:var(--ink-2);
  line-height:1.7;
  margin:0 0 20px;
  font-size:15px;
  max-width:760px;
}
.doc-section h3{
  font-size:17px;
  margin:28px 0 10px;
  letter-spacing:-.02em;
  scroll-margin-top:88px;
}
.doc-section h4{
  font-size:14px;
  margin:18px 0 8px;
}
.doc-section p{
  font-size:14.5px;
  line-height:1.8;
  color:var(--ink-2);
  margin:0 0 12px;
}
.doc-section li{
  font-size:14.5px;
  line-height:1.75;
  color:var(--ink-2);
  margin:4px 0;
}
.doc-section ul,.doc-section ol{padding-left:20px;margin:0 0 14px}
.doc-table-wrap{overflow:auto;margin:12px 0 18px;border:1px solid var(--line);border-radius:14px;background:var(--paper-2)}
.doc-table{
  width:100%;
  border-collapse:collapse;
  font-size:13px;
  min-width:640px;
}
.doc-table th{
  text-align:left;
  background:#f3eadc;
  color:#5c534a;
  font-weight:700;
  padding:11px 12px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.doc-table td{
  padding:11px 12px;
  border-bottom:1px solid var(--line);
  vertical-align:top;
  color:var(--ink-2);
  line-height:1.55;
}
.doc-table tr:last-child td{border-bottom:0}
.doc-table b{color:var(--ink)}
.doc-table .money{font-variant-numeric:tabular-nums;font-weight:800;color:var(--ink);white-space:nowrap}
.doc-table a{color:#6a4a1c;text-decoration:underline;text-underline-offset:3px}
.callout{
  border-radius:14px;
  padding:14px 16px;
  margin:12px 0 18px;
  border:1px solid var(--line);
  background:#fff;
  font-size:13.5px;
  line-height:1.7;
  color:var(--ink-2);
}
.callout b{color:var(--ink)}
.callout.lock{background:#f8f1e3;border-color:#e4d3ae}
.callout.out{background:#f7eee8;border-color:#e8cfc6}
.callout.warn{background:#f6f0e4;border-color:#e5d4b0}
.callout.ok{background:#eef6f0;border-color:#cfe3d6}
.tag{
  display:inline-flex;
  align-items:center;
  gap:4px;
  padding:2px 8px;
  border-radius:999px;
  font-size:11px;
  background:var(--chip);
  color:#6a5340;
  font-weight:700;
  white-space:nowrap;
}
.tag.m1{background:#efe3c8;color:#7a5614}
.tag.m2{background:#dce8f6;color:#1f4f86}
.tag.m3{background:#e4eee6;color:#215c3c}
.tag.out{background:#f0dfe0;color:#8a3340}
.tag.pass{background:#ece8e2;color:#8a8278}
.doc-table tr.pass td{color:#8a8278}
.doc-table tr.pass td b{color:#8a8278;font-weight:650}
.grid-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:12px 0 18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:12px 0 18px}
.info-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:16px;
  padding:16px 18px;
}
.info-card h3{margin:8px 0 6px;font-size:16px}
.info-card p{margin:0;font-size:13px;line-height:1.65}
.info-card .num{
  font-size:22px;
  font-weight:800;
  letter-spacing:-.03em;
  color:var(--gold);
}
.match-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
  margin:12px 0 8px;
}
.match-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:16px;
  padding:14px;
  display:flex;
  flex-direction:column;
  gap:8px;
  min-height:148px;
  transition:.18s;
}
.match-card:hover{border-color:#d4b98a;transform:translateY(-2px);box-shadow:0 10px 24px rgba(28,22,18,.06)}
.match-card .row{display:flex;justify-content:space-between;align-items:center;gap:8px}
.match-card b{font-size:14px;color:var(--ink)}
.match-card p{margin:0;font-size:12px;line-height:1.55;color:var(--mute);flex:1}
.match-card .go{font-size:12px;color:var(--gold);font-weight:800}
.req-block{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:16px;
  padding:18px 18px 8px;
  margin:0 0 14px;
}
.req-head{
  display:flex;
  justify-content:space-between;
  gap:12px;
  align-items:flex-start;
  margin-bottom:8px;
}
.req-head h3{margin:0;font-size:16px}
.req-id{
  font-variant-numeric:tabular-nums;
  font-size:12px;
  color:var(--gold);
  font-weight:800;
  letter-spacing:.04em;
}
.kv{
  display:grid;
  grid-template-columns:88px 1fr;
  gap:6px 12px;
  font-size:13px;
  margin:10px 0 12px;
}
.kv dt{color:var(--mute)}
.kv dd{margin:0;color:var(--ink-2)}
.month-hero{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
  margin:8px 0 16px;
}
.month-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:18px;
  padding:22px;
}
.month-card .price{
  font-size:32px;
  font-weight:800;
  letter-spacing:-.04em;
  margin:8px 0 4px;
}
.month-card .bar{
  height:10px;
  background:#efe6d6;
  border-radius:99px;
  overflow:hidden;
  margin:14px 0 8px;
}
.month-card .bar>i{display:block;height:100%;background:linear-gradient(90deg,#b07d32,#d4a054)}
.budget-sum{
  background:#1c1612;
  color:#f7f1e8;
  border-radius:18px;
  padding:22px 24px;
  margin:8px 0 18px;
}
.budget-sum .price{font-size:36px;font-weight:800;letter-spacing:-.04em;color:var(--gold-2)}
.sign-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
  margin-top:12px;
}
.sign-box{
  min-height:180px;
  border:1px dashed #d7cbb8;
  border-radius:16px;
  padding:18px;
  background:#fffdf8;
}
.sign-box h3{margin:0 0 10px}
.sign-line{margin-top:48px;color:var(--mute);font-size:13px;border-top:1px solid var(--line);padding-top:10px}
.doc-mobile-toc{
  display:none;
  position:sticky;
  top:68px;
  z-index:40;
  background:#efe8dc;
  border-bottom:1px solid var(--line);
  padding:10px 16px;
}
.doc-mobile-toc button{
  width:100%;
  border:1px solid var(--line);
  background:#fffdf8;
  border-radius:12px;
  padding:10px 12px;
  display:flex;
  justify-content:space-between;
  font-weight:700;
}
@media(max-width:1080px){
  .doc-layout{grid-template-columns:1fr}
  .doc-toc{display:none;position:fixed;z-index:80;left:0;top:68px;width:min(320px,86vw);box-shadow:12px 0 40px rgba(0,0,0,.15)}
  .doc-toc.open{display:block}
  .doc-mobile-toc{display:block}
  .doc-article{padding:24px 18px 80px}
  .meta-grid,.grid-cards,.grid-3,.match-grid,.sign-grid{grid-template-columns:1fr 1fr}
  .month-hero{grid-template-columns:1fr}
}
@media(max-width:720px){
  .meta-grid,.grid-cards,.grid-3,.match-grid,.month-hero,.sign-grid{grid-template-columns:1fr}
  .doc-cover{padding:22px 18px}
  .doc-cover h1{font-size:26px}
  .kv{grid-template-columns:1fr}
}
@media print{
  .topbar,.doc-toc,.doc-mobile-toc,.toast{display:none!important}
  .doc-layout{display:block}
  .doc-page{background:white}
  .doc-article{max-width:none;padding:0}
  .doc-section{break-inside:avoid}
  a{text-decoration:none;color:inherit}
  .match-card,.req-block{break-inside:avoid}
}