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14px}.exam-button{background:var(--knowledge-accent);color:#fff;cursor:pointer;border:0;border-radius:10px;justify-content:center;align-items:center;min-height:46px;padding:0 20px;font-weight:800;text-decoration:none;display:inline-flex}.exam-button:disabled{opacity:.45;cursor:not-allowed}.exam-button.secondary{color:var(--knowledge-text);border:1px solid var(--knowledge-border);background:0 0}.status-text{color:var(--knowledge-muted);line-height:1.6}.status-text.error{color:#c04e49}.exam-topbar{z-index:20;border:1px solid var(--knowledge-border);background:color-mix(in srgb, var(--knowledge-background) 92%, transparent);backdrop-filter:blur(14px);border-radius:16px;grid-template-columns:1fr auto auto;align-items:center;gap:18px;margin:24px 0;padding:16px 18px;display:grid;position:sticky;top:12px;box-shadow:0 10px 28px #00000014}.timer{font-variant-numeric:tabular-nums;font:800 1.35rem/1 Space Grotesk,monospace}.timer.is-urgent{color:#c04e49}.question-map{flex-wrap:wrap;gap:7px;margin:22px 0 34px;display:flex}.question-map a{border:1px solid var(--knowledge-border);width:34px;height:34px;color:var(--knowledge-muted);border-radius:8px;place-items:center;font-size:.8rem;text-decoration:none;display:grid}.question-map a.is-answered{background:var(--knowledge-accent);color:#fff;border-color:var(--knowledge-accent)}.question-list{gap:18px;display:grid}.question-card{border:1px solid var(--knowledge-border);background:var(--knowledge-surface);border-radius:18px;padding:26px;scroll-margin-top:110px}.question-number{color:var(--knowledge-accent);margin:0 0 12px;font-size:.82rem;font-weight:800}.question-prompt{white-space:pre-wrap;line-height:1.8}.question-prompt p{margin:0}.question-prompt p+p{margin-top:.6em}.question-prompt h4{color:var(--knowledge-accent);margin:1.1em 0 .4em;font-size:.82rem;font-weight:800}.question-prompt h4:first-child{margin-top:0}.question-prompt .figure-missing-notice{margin-top:.6em;font-size:.85rem}.question-figures{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-top:16px;display:grid}.question-figures figure{margin:0}.question-figures img{border:1px solid var(--knowledge-border);cursor:zoom-in;border-radius:10px;width:100%}.question-figures figcaption{color:var(--knowledge-muted);margin-top:6px;font-size:.8rem}.figure-lightbox{z-index:999;cursor:zoom-out;background:#000000d1;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.figure-lightbox img{border-radius:8px;max-width:100%;max-height:100%;box-shadow:0 20px 60px #0009}.options{gap:10px;margin-top:20px;display:grid}.exam-option{border:1px solid var(--knowledge-border);background:var(--knowledge-background);width:100%;color:var(--knowledge-text);font:inherit;text-align:left;cursor:pointer;border-radius:11px;grid-template-columns:34px 1fr;align-items:center;gap:12px;padding:13px 15px;transition:border-color .15s,background .15s,transform .15s;display:grid}.exam-option:hover:not(:disabled),.exam-option:focus-visible{border-color:var(--knowledge-accent);outline:0;transform:translate(2px)}.exam-option-label{border:1px solid var(--knowledge-border);width:32px;height:32px;color:var(--knowledge-accent);border-radius:7px;place-items:center;font-size:.78rem;font-weight:800;display:grid}.exam-option>strong{color:inherit;font-weight:650;line-height:1.55}.exam-option.is-selected{border-color:var(--knowledge-accent);background:color-mix(in srgb, var(--knowledge-accent) 12%, var(--knowledge-background));box-shadow:inset 3px 0 var(--knowledge-accent)}.exam-option.is-selected .exam-option-label{border-color:var(--knowledge-accent);background:var(--knowledge-accent);color:#fff}.exam-option:disabled{cursor:default;opacity:.58}.exam-option.is-correct{opacity:1;background:color-mix(in srgb, #173321 75%, var(--knowledge-background));box-shadow:none;border-color:#54a66b}.exam-option.is-correct .exam-option-label{color:#fff;background:#2f7844;border-color:#67bd80}.exam-option.is-incorrect{opacity:1;background:color-mix(in srgb, #4a1719 75%, var(--knowledge-background));border-color:#e05a5a;box-shadow:inset 3px 0 #e05a5a}.exam-option.is-incorrect .exam-option-label{color:#fff;background:#a72f35;border-color:#e66b6b}.result-summary{grid-template-columns:1.5fr repeat(3,1fr);gap:12px;margin:28px 0;display:grid}.result-stat{border:1px solid var(--knowledge-border);background:var(--knowledge-surface);border-radius:16px;padding:20px}.result-stat strong{margin-top:7px;font-size:1.7rem;display:block}.review-card.correct{border-left:5px solid #3d9b62}.review-card.incorrect{border-left:5px solid #c04e49}.review-card.unanswered{border-left:5px solid #b78332}.result-filters{z-index:15;border:1px solid var(--knowledge-border);background:color-mix(in srgb, var(--knowledge-background) 92%, transparent);backdrop-filter:blur(14px);border-radius:14px;gap:8px;width:fit-content;margin:0 0 10px;padding:7px;display:flex;position:sticky;top:12px}.result-filter{color:var(--knowledge-muted);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:9px;padding:10px 15px;font-weight:800}.result-filter span{background:color-mix(in srgb, var(--knowledge-border) 60%, transparent);border-radius:999px;place-items:center;min-width:24px;height:24px;margin-left:5px;padding:0 6px;font-size:.76rem;display:inline-grid}.result-filter:hover{color:var(--knowledge-text)}.result-filter.is-active{background:var(--knowledge-accent);color:#fff}.result-filter-status{margin:0 0 18px}.answer-box{background:color-mix(in srgb, var(--knowledge-accent) 8%, var(--knowledge-background));border-radius:10px;margin-top:18px;padding:15px;line-height:1.7}.answer-box p{margin:5px 0}.exam-loading{text-align:center;color:var(--knowledge-muted);padding:48px}@media (width<=780px){.exam-shell{padding:34px 16px 72px}.subject-grid{grid-template-columns:1fr}.exam-launcher,.exam-topbar{grid-template-columns:1fr;align-items:stretch}.exam-topbar{gap:10px;top:6px}.result-summary{grid-template-columns:1fr 1fr}.result-filters{width:100%;top:6px}.result-filter{flex:1;padding-inline:8px}.question-card{padding:20px 16px}}