:root{
  --ink:#1f2329; --sub:#646a73; --line:#e5e6eb; --bg:#f5f6f7; --card:#fff;
  --brand:#8c1c1c; --brand-d:#6d1414; --gold:#b8912f; --ok:#0f7b3f; --warn:#a8500a;
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.7 -apple-system,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  color:var(--ink);background:var(--bg)}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}

/* 顶栏 */
.topbar{background:var(--brand);color:#fff;position:sticky;top:0;z-index:20;
  box-shadow:0 1px 6px rgba(0,0,0,.12)}
.topbar .wrap{display:flex;align-items:center;gap:14px;height:56px}
.brand{color:#fff;font-weight:700;font-size:17px;white-space:nowrap}
.brand:hover{text-decoration:none;opacity:.9}
.topsearch{flex:1;display:flex;max-width:520px}
.topsearch input{flex:1;border:0;border-radius:4px 0 0 4px;padding:8px 12px;font-size:14px;outline:0}
.topsearch button{border:0;background:var(--gold);color:#fff;padding:8px 16px;
  border-radius:0 4px 4px 0;cursor:pointer;font-size:14px}
.topnav{display:flex;align-items:center;gap:12px;margin-left:auto;font-size:14px;white-space:nowrap}
.topnav a{color:#fff;opacity:.92}
.topnav .who{opacity:.85;border-left:1px solid rgba(255,255,255,.3);padding-left:12px}

/* 布局 */
.layout{display:flex;max-width:1180px;margin:18px auto;padding:0 16px;gap:18px;align-items:flex-start}
.sidebar{width:200px;flex:0 0 200px;background:var(--card);border:1px solid var(--line);
  border-radius:8px;padding:10px}
.side-title{font-size:12px;color:var(--sub);padding:4px 8px 8px;letter-spacing:1px}
.lib-nav{list-style:none;margin:0;padding:0}
.lib-nav a{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:6px;
  color:var(--ink);font-size:14px}
.lib-nav a:hover{background:#f2f3f5;text-decoration:none}
.lib-nav a.on{background:var(--brand);color:#fff}
.lib-nav a.on .lock{background:#fff;color:var(--brand)}
.lib-nav .ico{font-size:16px}
.lock{margin-left:auto;font-size:11px;background:#fdeaea;color:var(--brand);
  padding:1px 6px;border-radius:8px}
.main{flex:1;min-width:0}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;
  padding:18px 20px;margin-bottom:16px}
.card h2{margin:0 0 4px;font-size:19px}
.muted{color:var(--sub);font-size:13px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.libcard{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:16px;
  transition:.15s}
.libcard:hover{border-color:var(--brand);box-shadow:0 2px 10px rgba(140,28,28,.08)}
.libcard h3{margin:0 0 6px;font-size:16px;display:flex;align-items:center;gap:6px}
.libcard .desc{color:var(--sub);font-size:13px;min-height:38px}
.libcard .cnt{font-size:12px;color:var(--gold);margin-top:6px}

/* 列表 */
.doclist{list-style:none;margin:0;padding:0}
.doclist li{border-bottom:1px dashed var(--line);padding:10px 0;display:flex;
  align-items:center;gap:10px}
.doclist li:last-child{border-bottom:0}
.doclist .t{flex:1;min-width:0}
.doclist .t a{font-weight:500}
.doclist .meta{font-size:12px;color:var(--sub);white-space:nowrap}

/* 文档正文 */
.doc h1{font-size:23px;margin:0 0 10px}
.doc h2{font-size:18px;margin:22px 0 8px;padding-left:9px;border-left:3px solid var(--brand)}
.doc h3{font-size:16px;margin:18px 0 6px}
.doc p{margin:8px 0}
.doc table{border-collapse:collapse;width:100%;margin:12px 0;font-size:14px;
  display:block;overflow-x:auto}
.doc th,.doc td{border:1px solid var(--line);padding:7px 10px;text-align:left}
.doc th{background:#fafafa}
.doc code{background:#f2f3f5;padding:1px 5px;border-radius:3px;font-size:13px}
.doc pre{background:#1f2329;color:#eee;padding:12px;border-radius:6px;overflow-x:auto}
.doc blockquote{margin:10px 0;padding:8px 14px;background:#fbf7f0;
  border-left:3px solid var(--gold);color:#5b4a2a;font-size:13px}
.doc ul,.doc ol{padding-left:22px}

/* 元数据 */
.docmeta{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 14px}
.docmeta span{font-size:12px;background:#f2f3f5;color:var(--sub);padding:2px 9px;border-radius:10px}
.docmeta .secret{background:#fdeaea;color:var(--brand)}

/* 搜索 */
.result{border-bottom:1px solid var(--line);padding:14px 0}
.result:last-child{border-bottom:0}
.result h3{margin:0 0 4px;font-size:16px}
.result .snip{color:var(--sub);font-size:14px}
.empty{text-align:center;color:var(--sub);padding:36px 10px}
.empty .big{font-size:34px;margin-bottom:8px}

/* 问答 */
.askbox{display:flex;gap:10px;margin:14px 0}
.askbox input{flex:1;border:1px solid var(--line);border-radius:6px;padding:11px 14px;font-size:15px}
.askbox button{background:var(--brand);color:#fff;border:0;border-radius:6px;
  padding:11px 22px;font-size:15px;cursor:pointer}
.askbox button:hover{background:var(--brand-d)}
.answer{background:#fff;border:1px solid var(--line);border-left:4px solid var(--gold);
  border-radius:8px;padding:16px 20px;white-space:pre-wrap;line-height:1.85}
.sources{margin-top:14px}
.sources h4{margin:0 0 8px;font-size:14px;color:var(--sub)}
.sources li{margin:4px 0;font-size:14px}

/* 表单 */
.form{display:grid;gap:10px;max-width:420px}
.form label{font-size:13px;color:var(--sub)}
.form input,.form select{border:1px solid var(--line);border-radius:6px;padding:9px 12px;font-size:15px;width:100%}
.btn{background:var(--brand);color:#fff;border:0;border-radius:6px;padding:10px 18px;
  font-size:15px;cursor:pointer}
.btn:hover{background:var(--brand-d)}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn.danger{background:#c0392b}
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th,.tbl td{border-bottom:1px solid var(--line);padding:9px 8px;text-align:left}
.tbl th{color:var(--sub);font-weight:500;font-size:13px}
.tag{font-size:11px;padding:1px 7px;border-radius:9px;background:#f2f3f5;color:var(--sub)}
.tag.admin{background:#fdeaea;color:var(--brand)}
.tag.ok{background:#e8f6ee;color:var(--ok)}
.notice{background:#fff8e6;border:1px solid #ffe1a8;color:var(--warn);
  padding:10px 14px;border-radius:6px;font-size:13px;margin:10px 0}
.login-wrap{max-width:380px;margin:9vh auto;padding:0 16px}
.login-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px 26px}
.login-card h1{font-size:20px;margin:0 0 4px}
.foot{color:var(--sub);font-size:12px;text-align:center;padding:22px 0 30px}

@media (max-width:760px){
  .topbar .wrap{flex-wrap:wrap;height:auto;padding:10px 16px;gap:10px}
  .topsearch{order:3;flex-basis:100%;max-width:none}
  .topnav{margin-left:0}
  .layout{flex-direction:column;padding:0 12px}
  .sidebar{width:100%;flex:1 1 auto}
  .lib-nav{display:flex;flex-wrap:wrap;gap:4px}
  .lib-nav li{flex:0 0 auto}
  .lib-nav a{padding:6px 10px;font-size:13px}
}