:root,html[data-theme=light]{color-scheme:light;--bg:#f7f8f5;--bg-alt:#eef3ef;--surface:#ffffff;--surface-muted:#f1f5f2;--surface-strong:#e8efea;--text:#17211c;--text-soft:#435149;--muted:#6a7770;--border:rgba(23,33,28,0.12);--border-strong:rgba(23,33,28,0.2);--accent:#12715d;--accent-strong:#0d5f4f;--accent-soft:rgba(18,113,93,0.1);--accent-fill:#12715d;--accent-fill-hover:#0d5f4f;--text-on-accent:#ffffff;--danger:#b13e37;--danger-soft:#fff0ee;--danger-border:rgba(177,62,55,0.26);--success:#23764f;--success-soft:#eaf7f0;--success-border:rgba(35,118,79,0.24);--warning:#8a641d;--warning-soft:#fff7e6;--warning-border:rgba(138,100,29,0.24);--shadow-soft:0 18px 44px rgba(34,50,42,0.08);--control-shadow:0 1px 0 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rgba(255,255,255,0.05);--auth-glow-warm:rgba(232,195,110,0.1);--auth-glow-accent:rgba(100,199,170,0.12)}*{box-sizing:border-box}html{min-height:100%;background:var(--bg);scroll-behavior:smooth}body{min-height:100dvh;margin:0;background:linear-gradient(180deg,var(--bg-alt),var(--bg) 360px);color:var(--text);color-scheme:inherit;font-family:Segoe UI Variable,Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,Helvetica 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solid var(--border);margin-top:6px;padding-top:16px}.admin-inline-form{display:flex;flex-wrap:wrap;gap:10px}.admin-ai-draft-form{display:grid;grid-gap:12px;gap:12px}.muted-copy{color:var(--muted);font-size:.9rem;line-height:1.6}.admin-action-row,.admin-bulk-toolbar{flex-wrap:wrap;gap:10px}.admin-bulk-toolbar{align-items:end;border:1px solid var(--border);border-radius:var(--radius-card);background:var(--surface-muted);padding:12px}.admin-bulk-toolbar .field{min-width:190px}.button--danger:hover:not(:disabled){border-color:var(--danger-border);background:var(--danger-soft);color:var(--danger)}.admin-queue-list{display:grid;grid-gap:8px;gap:8px}.admin-queue-row{display:grid;grid-template-columns:22px minmax(0,1fr);grid-gap:10px;gap:10px;align-items:start;border:1px solid var(--border);border-radius:var(--radius-control);padding:11px 12px;transition:background .16s ease,border-color .16s ease,transform .16s ease}.admin-queue-row--active,.admin-queue-row:hover{border-color:var(--border-strong);background:var(--surface-muted);transform:translateY(-1px)}.admin-queue-row a{display:grid;grid-gap:4px;gap:4px;min-width:0}.admin-queue-row strong{color:var(--text);font-size:.94rem;line-height:1.45}.admin-queue-row span{color:var(--muted);font-size:.82rem}.admin-mini-row{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-gap:8px 10px;gap:8px 10px;border-top:1px solid var(--border);padding-top:12px}.admin-mini-row:first-child{border-top:0;padding-top:0}.admin-mini-row span:first-child{display:grid;grid-gap:2px;gap:2px;min-width:0}.admin-mini-row p,.admin-mini-row small,.admin-topic-count{color:var(--muted);font-size:.8rem}.admin-mini-row p{grid-column:1/-1}.admin-topic-row{display:grid;grid-template-columns:64px minmax(120px,.7fr) minmax(160px,1fr) 72px 82px minmax(130px,.75fr) auto;grid-gap:8px;gap:8px;align-items:center;border-top:1px solid var(--border);padding-top:10px}.admin-topic-row:first-child{border-top:0;padding-top:0}.admin-topic-row input:not([type=checkbox]){width:100%;min-width:0;min-height:38px;border:1px solid var(--border);border-radius:var(--radius-control);background:var(--surface);color:var(--text);padding:0 10px}.admin-topic-code{color:var(--accent-strong);font-size:.78rem;font-weight:850}.admin-check-label{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:.8rem;font-weight:750}.admin-audit-row{border-top:1px solid var(--border);padding-top:10px}.admin-audit-row:first-child{border-top:0;padding-top:0}.admin-audit-row summary{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-gap:10px;gap:10px;cursor:pointer;color:var(--text);font-weight:750}.admin-audit-row summary span:first-child{display:grid;grid-gap:2px;gap:2px;min-width:0}.admin-audit-row small,.admin-audit-row summary span:last-child{color:var(--muted);font-size:.8rem}.admin-audit-diff{display:grid;grid-gap:8px;gap:8px;margin-top:10px;border-radius:var(--radius-control);background:var(--surface-muted);padding:10px}.admin-audit-diff p{display:grid;grid-gap:4px;gap:4px;font-size:.82rem}.exam-layout{grid-template-columns:minmax(0,1fr) 320px;align-items:start}.exam-layout,.exam-question-panel{display:grid;grid-gap:16px;gap:16px}.exam-question-panel{padding:22px}.question-topline,.side-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.question-topline h1{font-size:1.8rem}.question-card{display:grid;grid-gap:18px;gap:18px}.question-stem{color:var(--text);font-size:1.14rem;font-weight:650;line-height:1.65}.option-list{display:grid;grid-gap:10px;gap:10px}.option-button{display:grid;grid-template-columns:34px minmax(0,1fr);grid-gap:12px;gap:12px;align-items:center;min-height:58px;border:1px solid var(--border);border-radius:var(--radius-card);background:var(--surface);color:var(--text);cursor:pointer;padding:12px;text-align:left;transition:background .16s ease,border-color .16s ease,transform .16s ease}.option-button:hover:not(:disabled){border-color:var(--border-strong);background:var(--surface-muted);transform:translateY(-1px)}.option-button--selected{border:2px solid #0d5f4f;background:rgba(13,95,79,.12);color:#0b493c;font-weight:700}:root[data-theme=dark] .option-button--selected{border:2px solid #64c7aa;background:rgba(100,199,170,.22);color:#8bdcc4}.option-button--selected .option-label{border-color:#0d5f4f;background:#0d5f4f;color:#ffffff;font-weight:800}:root[data-theme=dark] .option-button--selected .option-label{border-color:#64c7aa;background:#64c7aa;color:#0d1210}.option-button--correct{border:2px solid #15803d;background:#eaf7f0;color:#14532d;font-weight:700}:root[data-theme=dark] .option-button--correct{border:2px solid #4ade80;background:rgba(34,197,94,.22);color:#86efac}.option-button--correct .option-label{border-color:#15803d;background:#15803d;color:#ffffff;font-weight:800}:root[data-theme=dark] .option-button--correct .option-label{border-color:#4ade80;background:#4ade80;color:#052e16}.option-button--wrong{border-color:var(--danger-border);background:var(--danger-soft)}.option-label{display:grid;width:28px;height:28px;place-items:center;border:1px solid var(--border);border-radius:var(--radius-pill);color:var(--muted);font-weight:800}.answer-review{display:grid;grid-gap:10px;gap:10px;border-radius:var(--radius-card);background:var(--surface-muted);padding:14px}.question-footer{justify-content:space-between;gap:10px}.exam-side-panel{position:-webkit-sticky;position:sticky;top:16px}.exam-side-panel,.side-card{display:grid;grid-gap:16px;gap:16px}.side-card{padding:18px}.side-card h2{font-size:1rem}.side-card-header strong{color:var(--text);font-size:1.2rem}.result-stack{display:grid;grid-gap:12px;gap:12px}.result-score{color:var(--text);font-size:2.6rem;font-weight:850;line-height:1}.result-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-gap:8px 12px;gap:8px 12px;color:var(--muted)}.result-grid strong{color:var(--text)}.question-index-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(36px,1fr));grid-gap:8px;gap:8px}.question-index-button{min-height:36px;border:1px solid var(--border);border-radius:var(--radius-control);background:var(--surface);color:var(--muted);cursor:pointer;font-weight:750;transition:background .16s ease,border-color .16s ease,color .16s ease,transform .16s 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