:root{--bg: #0f1115;--surface: #171a21;--surface-2: #1e222b;--border: #2a2f3a;--text: #e8eaed;--muted: #9aa3b2;--accent: #3b82f6;--ok: #22c55e;--bad: #ef4444;--warn: #f59e0b;--radius: 12px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}#app{max-width:720px;margin:0 auto;padding:20px 16px 64px}h1{font-size:1.55rem;margin:0 0 6px;letter-spacing:-.02em}h2{font-size:1.15rem;margin:28px 0 12px}p{margin:0 0 12px}.muted{color:var(--muted);font-size:.92rem}.center{text-align:center}.deadline{background:linear-gradient(135deg,#7c2d12,#9a3412);border:1px solid #c2410c;border-radius:var(--radius);padding:14px 16px;margin:16px 0 24px}.deadline strong{font-size:1.5rem;display:block;line-height:1.2}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}button{font:inherit;cursor:pointer;border-radius:10px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);padding:12px 16px;transition:border-color .15s,background .15s}button:hover:not(:disabled){border-color:var(--accent)}button:disabled{opacity:.5;cursor:default}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600;width:100%;padding:15px;font-size:1.02rem}.btn-primary:hover:not(:disabled){background:#2563eb}.btn-row{display:flex;gap:10px}.btn-row button{flex:1}.module-list{display:grid;gap:8px}.module-btn{display:flex;justify-content:space-between;align-items:center;gap:12px;text-align:left;width:100%}.module-btn .count{color:var(--muted);font-size:.85rem;white-space:nowrap;text-align:right}.module-btn small{display:block;color:var(--muted);font-size:.82rem;font-weight:400;margin-top:2px}.badge{display:inline-block;font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;padding:2px 7px;border-radius:999px;background:#3b82f62e;color:#93c5fd;vertical-align:middle}.exam-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 0 14px;border-bottom:1px solid var(--border);margin-bottom:18px;position:sticky;top:0;background:var(--bg);z-index:5}.timer{font-variant-numeric:tabular-nums;font-weight:600;font-size:1.1rem}.timer.low{color:var(--warn)}.timer.critical{color:var(--bad)}.progress-track{height:4px;background:var(--surface-2);border-radius:2px;overflow:hidden}.progress-fill{height:100%;background:var(--accent);transition:width .2s}.qmeta{color:var(--muted);font-size:.85rem;margin-bottom:8px}.qtext{font-size:1.1rem;font-weight:500;margin-bottom:18px}.options{display:grid;gap:10px}.option{text-align:left;width:100%;display:flex;gap:12px;align-items:flex-start;padding:14px}.option .letter{flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--border);display:grid;place-items:center;font-size:.85rem;font-weight:600}.option.selected{border-color:var(--accent);background:#3b82f61f}.option.selected .letter{background:var(--accent);border-color:var(--accent);color:#fff}.option.correct{border-color:var(--ok);background:#22c55e1f}.option.correct .letter{background:var(--ok);border-color:var(--ok);color:#06240f}.option.wrong{border-color:var(--bad);background:#ef44441f}.option.wrong .letter{background:var(--bad);border-color:var(--bad);color:#fff}.explain{margin-top:14px;padding:12px 14px;background:var(--surface-2);border-left:3px solid var(--accent);border-radius:0 8px 8px 0;font-size:.94rem}.explain .source{display:block;margin-top:6px;color:var(--muted);font-size:.85rem}.hint{margin:14px 0 0;padding:10px 14px;background:var(--surface-2);border-radius:8px;color:var(--muted);font-size:.88rem;line-height:1.5}.btn-primary small{display:block;margin-top:4px;font-size:.78rem;font-weight:400;opacity:.85}.card.repaso{border-color:var(--warn)}.repaso-top{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.streak{flex:0 0 auto;background:#f59e0b29;color:var(--warn);border-radius:999px;padding:3px 11px;font-size:.8rem;font-weight:600}.consent{display:flex;gap:10px;align-items:flex-start;margin:0 0 14px;font-size:.86rem;line-height:1.5;color:var(--muted);cursor:pointer}.consent input{margin-top:3px;flex:0 0 auto;width:17px;height:17px;accent-color:var(--accent)}.site-footer{margin-top:28px;padding-top:18px;border-top:1px solid var(--border);font-size:.85rem}.site-footer p{margin:0 0 8px}.site-footer a{color:var(--muted);margin-right:14px;display:inline-block}.explain-locked{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:8px;padding:10px 14px;border:1px dashed var(--border);border-radius:8px;color:var(--muted);font-size:.88rem}.btn-link{flex:0 0 auto;padding:6px 14px;border-radius:999px;border:1px solid var(--accent);background:transparent;color:var(--accent);font-size:.88rem;cursor:pointer}.btn-link:hover{background:var(--accent);color:#fff}.nav-row{display:flex;gap:10px;margin-top:22px}.nav-row button{flex:1}.verdict{text-align:center;padding:26px 16px;border-radius:var(--radius);margin-bottom:20px}.verdict.pass{background:#22c55e1f;border:1px solid var(--ok)}.verdict.fail{background:#ef44441f;border:1px solid var(--bad)}.verdict .label{font-size:2rem;font-weight:700;letter-spacing:-.02em}.verdict .score{color:var(--muted);margin-top:4px}.mod-row{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border:1px solid var(--border);border-radius:10px;margin-bottom:8px;background:var(--surface)}.mod-row.failed{border-color:var(--bad)}.mod-right{display:flex;align-items:center;gap:10px;flex:0 0 auto}.mod-right .btn-link{padding:5px 12px;font-size:.82rem}.pill{font-size:.8rem;font-weight:600;padding:3px 9px;border-radius:999px}.pill.ok{background:#22c55e2e;color:#4ade80}.pill.bad{background:#ef44442e;color:#f87171}.review-item{margin-bottom:22px;padding-bottom:22px;border-bottom:1px solid var(--border)}.review-item:last-child{border-bottom:none}.disclaimer{margin-top:36px;padding:14px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);font-size:.85rem;color:var(--muted)}.disclaimer a{color:var(--accent)}.lead-form{display:flex;gap:8px;margin-top:10px}.lead-form input{flex:1;font:inherit;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:var(--surface-2);color:var(--text)}.lead-form input:focus{outline:none;border-color:var(--accent)}.tip{background:#3b82f61a;border:1px solid rgba(59,130,246,.35);border-radius:var(--radius);padding:13px 15px;margin:14px 0;font-size:.92rem}.paywall{border-color:var(--accent);background:linear-gradient(180deg,#1b2331,var(--surface))}.unlocked{border-color:var(--ok)}.link-btn{background:none;border:none;color:var(--accent);padding:10px 0 0;width:100%;text-align:center;font-size:.9rem}.link-btn:hover{text-decoration:underline}.notice{background:var(--surface-2);border:1px solid var(--accent);border-radius:var(--radius);padding:12px 15px;margin:14px 0;font-size:.92rem}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9rem;letter-spacing:.02em}