:root{
  --bg:#f6f5f2; --panel:#ffffff; --ink:#1d2327; --muted:#5f6b72; --line:#dfdcd5;
  --accent:#1f5f8b; --accent-ink:#ffffff; --accent-soft:#e3eef6;
  --sel:#1f5f8b; --earlier:#2e7d4f; --earlier-soft:#e2f2e8; --later:#a3600b; --later-soft:#fbeedb;
  --same:#4b5563; --same-soft:#eceff1; --ai:#7a3e9d; --ai-soft:#f1e6f7; --danger:#a12a2a;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
button,select,input{font:inherit}
.top{position:sticky;top:0;z-index:20;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 18px;background:var(--panel);border-bottom:1px solid var(--line)}
.brand h1{font-size:18px;margin:0;letter-spacing:.2px}
.brand .sub{color:var(--muted);font-size:12.5px}
.top-actions{display:flex;gap:8px}
.btn{border:1px solid var(--line);background:var(--panel);color:var(--ink);padding:6px 12px;border-radius:7px;cursor:pointer;white-space:nowrap}
.btn:hover{border-color:#b9b4a9}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.danger{color:var(--danger)}
.btn:disabled{opacity:.5;cursor:default}
.link{border:0;background:none;color:var(--accent);cursor:pointer;padding:0}
.pill{display:inline-block;min-width:20px;padding:0 6px;margin-left:4px;border-radius:10px;background:rgba(255,255,255,.25);font-size:12px;text-align:center}
.layout{display:grid;grid-template-columns:360px 1fr;min-height:calc(100vh - 54px)}
.spec{border-right:1px solid var(--line);background:var(--panel);position:sticky;top:54px;height:calc(100vh - 54px);display:flex;flex-direction:column}
.spec-head{padding:10px 12px;border-bottom:1px solid var(--line)}
.spec-head input{width:100%;padding:6px 9px;border:1px solid var(--line);border-radius:7px}
.spec-tools{display:flex;justify-content:space-between;margin-top:6px;font-size:12px;color:var(--muted)}
.legend b{font-weight:600;color:var(--ink)} .legend b.pure{color:var(--earlier)}
.spec-tree{overflow:auto;padding:6px 6px 40px}
.node{margin:1px 0}
.nrow{display:flex;align-items:flex-start;gap:6px;padding:3px 6px;border-radius:6px}
.nrow:hover{background:#f3f1ec}
.nrow input{margin-top:3px}
.nrow .tw{border:0;background:none;cursor:pointer;width:16px;color:var(--muted);padding:0;line-height:20px}
.nrow .nm{flex:1;cursor:pointer}
.nrow .cnt{font-size:11.5px;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums}
.nrow .cnt .pure{color:var(--earlier);font-weight:600}
.lvl-mod>.nrow .nm{font-weight:700}
.lvl-sec>.nrow .nm{font-weight:600}
.lvl-top>.nrow .nm{font-weight:600;color:#2b3a44}
.lvl-lo>.nrow{font-size:12.5px}
.lvl-lo .code{font-weight:600;margin-right:4px}
.lvl-lo .lotext{color:#3a464d}
.kids{margin-left:14px}
.low{background:var(--later-soft)}
.main{padding:14px 18px 60px;min-width:0}
.filters{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px 12px;display:flex;flex-direction:column;gap:8px}
.frow{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px}
.flabel{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.frow select,.frow input[type=search]{padding:5px 8px;border:1px solid var(--line);border-radius:7px;background:#fff;max-width:100%}
.frow input[type=search]{flex:1;min-width:220px}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{border:0;background:#fff;padding:5px 11px;cursor:pointer;border-right:1px solid var(--line)}
.seg button:last-child{border-right:0}
.seg button.on{background:var(--accent);color:#fff}
.chips{display:flex;flex-wrap:wrap;gap:6px 12px}
.chk{display:inline-flex;gap:5px;align-items:center;cursor:pointer}
.chips label{display:inline-flex;gap:4px;align-items:center;cursor:pointer}
.result-head{display:flex;justify-content:space-between;align-items:center;margin:14px 2px 8px;color:var(--muted)}
.results{display:flex;flex-direction:column;gap:14px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.card.inbasket{outline:2px solid var(--accent)}
.card.ai{border-color:#d7c2e4}
.chead{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;padding:9px 12px;border-bottom:1px solid var(--line);background:#fbfaf8}
.chead .ref{font-weight:600}
.chead .mk{color:var(--muted)}
.badge{font-size:11.5px;padding:1px 7px;border-radius:9px;background:var(--same-soft);color:var(--same)}
.badge.ai{background:var(--ai-soft);color:var(--ai);font-weight:600}
.badge.lor{background:#fdf0e1;color:#8a4b00}
.chead .spacer{flex:1}
.tags{display:flex;flex-wrap:wrap;gap:5px;padding:8px 12px;border-bottom:1px solid var(--line);align-items:center}
.tag{font-size:12px;padding:1px 7px;border-radius:9px;border:1px solid transparent;cursor:help}
.tag.sel{background:var(--accent-soft);color:var(--sel);border-color:#b8d1e3;font-weight:600}
.tag.earlier{background:var(--earlier-soft);color:var(--earlier)}
.tag.later{background:var(--later-soft);color:var(--later)}
.tag.same{background:var(--same-soft);color:var(--same)}
.tag.primary{box-shadow:inset 0 0 0 1.5px currentColor}
.verdict{font-size:12px;margin-left:4px;color:var(--muted)}
.verdict.ok{color:var(--earlier);font-weight:600}
.verdict.warn{color:var(--later);font-weight:600}
.cbody{padding:10px 12px}
.cbody img{display:block;width:100%;max-width:760px;height:auto;margin:0 0 6px}
.stem{opacity:.78;border-left:3px solid var(--line);padding-left:8px;margin-bottom:6px}
.stem-label{font-size:11.5px;color:var(--muted);margin-bottom:3px}
.note{font-size:12.5px;background:#fff8e5;border:1px solid #f0dfaa;border-radius:6px;padding:6px 9px;margin:4px 0 8px}
.cfoot{display:flex;gap:8px;flex-wrap:wrap;padding:8px 12px;border-top:1px solid var(--line);background:#fbfaf8}
.ms{border-top:1px dashed var(--line);padding:10px 12px;background:#fcfcfb}
.ms img{display:block;width:100%;height:auto;margin-bottom:4px}
.er{font-size:13px;white-space:pre-wrap;background:#f4f7f9;border-radius:6px;padding:8px 10px;margin-top:6px}
.more{text-align:center;margin-top:14px}
.empty{padding:30px;text-align:center;color:var(--muted);background:var(--panel);border:1px dashed var(--line);border-radius:10px}
.drawer{position:fixed;inset:0;background:rgba(20,24,28,.35);z-index:50;display:flex;justify-content:flex-end}
.drawer[hidden]{display:none}
.drawer-inner{width:min(520px,100%);height:100%;background:var(--panel);padding:16px;overflow:auto;display:flex;flex-direction:column;gap:10px}
.drawer-inner.wide{width:min(900px,100%)}
.drawer-head{display:flex;justify-content:space-between;align-items:center}
.drawer-head h2{margin:0;font-size:18px}
.x{border:0;background:none;font-size:24px;cursor:pointer;color:var(--muted)}
.field{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted)}
.field input{padding:7px 9px;border:1px solid var(--line);border-radius:7px;font-size:14px;color:var(--ink)}
.opts{display:flex;flex-direction:column;gap:4px}
.basket-total{font-weight:600}
.basket{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.basket li{display:flex;gap:8px;align-items:center;border:1px solid var(--line);border-radius:8px;padding:6px 8px}
.basket .qn{font-weight:700;width:28px}
.basket .bi{flex:1;min-width:0}
.basket .bi .r{font-weight:600;font-size:13px}
.basket .bi .t{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.basket button{border:1px solid var(--line);background:#fff;border-radius:6px;cursor:pointer;padding:1px 7px}
.drawer-actions{display:flex;flex-direction:column;gap:8px;margin-top:auto;position:sticky;bottom:-16px;background:var(--panel);padding:10px 0 16px;border-top:1px solid var(--line)}
.row2{display:flex;gap:8px;flex-wrap:wrap}
.filebtn{display:inline-block}
.hint{font-size:12.5px;color:var(--muted);margin:0}
table.cov{border-collapse:collapse;width:100%;font-size:12.5px}
table.cov th,table.cov td{border-bottom:1px solid var(--line);padding:4px 6px;text-align:left;vertical-align:top}
table.cov td.n{text-align:right;font-variant-numeric:tabular-nums;width:70px}
table.cov tr.topic td{background:#f3f1ec;font-weight:600}
table.cov tr.low td.n.p{color:var(--later);font-weight:700}
@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .spec{position:static;height:auto;max-height:50vh}
  .main{padding:12px}
}
.ainote{font-size:12.5px;color:var(--ai);margin:0 0 8px}