.qc{border:1px solid hsl(var(--border));background:hsl(var(--card));border-radius:16px;padding:18px;scroll-margin-top:88px}@media (min-width:640px){.qc{padding:22px 24px}}.qc-head{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:12px;display:flex}.qc-num{background:hsl(var(--primary) / .1);color:hsl(var(--primary));border-radius:8px;padding:2px 10px;font-size:13px;font-weight:800}.qc-tag{border:1px solid hsl(var(--border));color:hsl(var(--muted-foreground));border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600}.qc-tag[data-level="1"]{color:#059669;border-color:#05966959}.qc-tag[data-level="2"]{color:#b45309;border-color:#d9770659}.qc-tag[data-level="3"]{color:#e11d48;border-color:#e11d4859}.dark .qc-tag[data-level="2"]{color:#fbbf24}.qc-source{font-family:var(--font-geist-mono), monospace}.qc-prompt{font-size:1.04rem;line-height:1.75}.qc-options{gap:10px;margin-top:16px;display:grid}@media (min-width:768px){.qc-options{grid-template-columns:1fr 1fr}}.qc-opt{cursor:pointer;border:1.5px solid hsl(var(--border));background:hsl(var(--background));text-align:left;border-radius:12px;align-items:center;gap:12px;width:100%;min-height:52px;padding:10px 14px;font-size:15px;transition:border-color .15s,background-color .15s;display:flex}.qc-opt:hover:not(:disabled){border-color:hsl(var(--primary) / .6)}.qc-opt:focus-visible,.qc-btn:focus-visible,.qc-input:focus-visible{outline:2px solid hsl(var(--ring));outline-offset:2px}.qc-opt>b{background:hsl(var(--muted));border-radius:8px;flex:none;place-items:center;width:28px;height:28px;font-size:13px;display:grid}.qc-opt[aria-pressed=true]{border-color:hsl(var(--primary));background:hsl(var(--primary) / .07)}.qc-opt[aria-pressed=true]>b{background:hsl(var(--primary));color:hsl(var(--primary-foreground))}.qc-opt[data-result=right]{color:inherit;background:#05966917;border-color:#059669}.qc-opt[data-result=right]>b{color:#fff;background:#059669}.qc-opt[data-result=right]>svg{color:#059669}.qc-opt[data-result=wrong]{background:#e11d4814;border-color:#e11d48}.qc-opt[data-result=wrong]>b{color:#fff;background:#e11d48}.qc-opt[data-result=wrong]>svg{color:#e11d48}.qc-opt:disabled{cursor:default}.qc-numeric{flex-wrap:wrap;gap:10px;margin-top:16px;display:flex}.qc-input{border:1.5px solid hsl(var(--border));background:hsl(var(--background));font-variant-numeric:tabular-nums;border-radius:12px;width:min(240px,100%);height:48px;padding:0 14px;font-size:16px}.qc-input[data-result=right]{border-color:#059669}.qc-input[data-result=wrong]{border-color:#e11d48}.qc-foot{flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;display:flex}.qc-btn{cursor:pointer;border:1px solid hsl(var(--border));background:hsl(var(--background));border-radius:12px;align-items:center;gap:6px;min-height:44px;padding:0 14px;font-size:14px;font-weight:700;display:inline-flex}.qc-btn:hover:not(:disabled){border-color:hsl(var(--primary) / .5)}.qc-btn:disabled{cursor:not-allowed;opacity:.55}.qc-btn-primary{background:hsl(var(--primary));color:hsl(var(--primary-foreground));border-color:#0000}.qc-verdict{font-size:14.5px;font-weight:700}.qc-verdict[data-result=right]{color:#059669}.qc-verdict[data-result=wrong]{color:#e11d48}.qc-solution{background:hsl(var(--muted) / .45);border-left:3px solid #059669b3;border-radius:0 12px 12px 0;margin-top:14px;padding:12px 16px;font-size:15px;line-height:1.75}.qc-answer{margin-bottom:6px;font-weight:800}@media (prefers-reduced-motion:reduce){.qc-opt,.qc-btn svg{transition:none}}.qc-save{border:1px solid hsl(var(--border));width:44px;height:44px;color:hsl(var(--muted-foreground));border-radius:12px;place-items:center;display:inline-grid}.qc-save:hover{border-color:hsl(var(--primary) / .5);color:hsl(var(--foreground))}.qc-save[aria-pressed=true]{border-color:hsl(var(--primary));background:hsl(var(--primary) / .08);color:hsl(var(--primary))}.qc-save:focus-visible{outline:2px solid hsl(var(--ring));outline-offset:2px}.qc-doubt{border:1px solid hsl(var(--primary) / .3);background:hsl(var(--primary) / .05);border-radius:12px;gap:8px;margin-top:14px;padding:12px 14px;font-size:14.5px;line-height:1.6;display:grid}.qc-doubt-text{resize:vertical;border:1.5px solid hsl(var(--border));background:hsl(var(--background));border-radius:10px;width:100%;padding:10px 12px;font-size:15px}.qc-doubt-text:focus-visible{outline:2px solid hsl(var(--ring));outline-offset:2px}.qc-doubt-row{flex-wrap:wrap;gap:8px;display:flex}.qc-doubt-error{color:#e11d48;font-size:14px;font-weight:700}.qc{padding:16px 18px}@media (min-width:640px){.qc{padding:16px 18px}}.qc+.qc{margin-top:12px}.qc[data-result=right]{border-color:#059669}.qc[data-result=wrong]{border-color:#e11d48}.qc-head{gap:6px;margin-bottom:0}.qc-num{border-radius:7px;padding:2px 8px;font-size:12px}.qc-tag{align-items:center;gap:5px;min-height:22px;padding:0 8px;font-size:11px;font-weight:700;display:inline-flex}.qc-tag[data-level]:before{content:"";background:currentColor;border-radius:999px;width:7px;height:7px}.qc-prompt{margin-top:10px;font-size:15.5px}.qc-options{gap:8px;margin-top:12px}.qc-opt{border-width:1px;min-height:44px;padding:8px 12px;font-size:14.5px}.qc-opt>b{border-radius:7px;width:24px;height:24px;font-size:11px}.qc-foot{gap:8px;margin-top:12px}.qc-verdict[data-result]{border-radius:999px;align-items:center;min-height:28px;padding:0 10px;font-size:12.5px;font-weight:800;display:inline-flex}.qc-verdict[data-result=right]{background:#0596691f}.qc-verdict[data-result=wrong]{background:#e11d481a}.qc-foot .qc-btn:not(.qc-btn-primary){color:hsl(var(--primary));background:0 0;border-color:#0000;padding:0 8px;font-size:13px}.qc-foot .qc-btn:not(.qc-btn-primary):hover:not(:disabled){background:hsl(var(--primary) / .08)}.qc-solution{background:hsl(var(--muted) / .6);border-left:0;border-radius:12px;padding:12px 14px;font-size:14.5px}.qc-save{border-color:#0000}