.wb-concepts-page{max-width:1420px;margin:0 auto}
.wb-concept-layout{display:grid;grid-template-columns:minmax(250px,320px) minmax(0,1fr);gap:18px;margin-top:16px;align-items:start}
.wb-concept-layout>.v5-concept-outline{position:sticky;top:16px;max-height:calc(100vh - 120px)}
.wb-concept-detail{padding:20px;min-width:0}
.wb-concept-detail>header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.wb-concept-detail>header>div:first-child>span{color:var(--muted);font-size:12px}
.wb-concept-detail>header h2{margin:5px 0 0}
.wb-concept-detail>header p{max-width:760px;margin:8px 0 0;color:var(--muted);line-height:1.65}
.wb-concept-level{display:grid;grid-template-columns:auto auto;align-items:baseline;justify-content:end;min-width:110px;padding:12px;border:1px solid var(--line);border-radius:14px;background:var(--accent-2);color:var(--accent)}
.wb-concept-level strong{font-size:32px;line-height:1}.wb-concept-level>span{font-weight:800}.wb-concept-level small{grid-column:1/-1;margin-top:5px;color:var(--muted);font-size:11px}
.wb-concept-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px;margin:16px 0}
.wb-concept-metrics>div,.wb-concept-metrics>button{display:grid;gap:3px;padding:12px;text-align:left;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}
.wb-concept-metrics>button:not(:disabled){cursor:pointer}.wb-concept-metrics>button:not(:disabled):hover{border-color:var(--accent);background:var(--accent-2)}.wb-concept-metrics>button:disabled{cursor:default}
.wb-concept-metrics strong{font-size:20px}.wb-concept-metrics span{color:var(--muted);font-size:11px}
.wb-concept-evidence{padding:18px 0;border-top:1px solid var(--line)}
.wb-concept-section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.wb-concept-section-head h3{margin:0}.wb-concept-section-head>span{display:grid;place-items:center;min-width:28px;height:28px;padding:0 7px;border-radius:999px;background:var(--soft);color:var(--muted);font-size:12px;font-weight:800}
.wb-concept-corrections,.wb-concept-card-list,.wb-concept-problem-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
.wb-concept-corrections article,.wb-concept-card-list>button,.wb-concept-problem-list>button{display:grid;gap:5px;min-width:0;padding:13px;text-align:left;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--ink)}
.wb-concept-corrections article>span,.wb-concept-card-list span,.wb-concept-problem-list span{color:var(--accent);font-size:11px;font-weight:800}
.wb-concept-corrections p{margin:0;line-height:1.6}.wb-concept-card-list small,.wb-concept-problem-list small{color:var(--muted)}
@media(max-width:900px){.wb-concept-layout{grid-template-columns:1fr}.wb-concept-layout>.v5-concept-outline{position:static;max-height:340px}.wb-concept-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.wb-concept-detail>header{display:grid}.wb-concept-level{justify-self:start}.wb-concept-corrections,.wb-concept-card-list,.wb-concept-problem-list{grid-template-columns:1fr}}