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0 auto}.switch__thumb{position:absolute;top:2px;left:2px;width:17px;height:17px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0000004d;transition:transform .22s var(--ease)}.switch--on .switch__track{background:var(--accent);border-color:var(--accent)}.switch--on .switch__thumb{transform:translate(17px)}.switch__label{white-space:nowrap}.segmented{display:inline-flex;flex-wrap:wrap;border:1px solid var(--border-strong);border-radius:var(--radius-sm);overflow:hidden}.segmented__btn{padding:9px 16px;background:var(--surface);border:none;border-right:1px solid var(--border-strong);font-size:14px;font-weight:600;color:var(--muted);transition:background .18s,color .18s}.segmented__btn:last-child{border-right:none}.segmented__btn--on{background:var(--primary);color:var(--on-primary)}.qcard{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm);animation:rise .34s var(--ease-out) both}.qcard__head{display:flex;align-items:center;gap:10px;margin-bottom:12px;min-height:24px}.badge{display:inline-flex;flex-direction:column;align-items:flex-start;gap:1px;line-height:1.25;font-size:11px;font-weight:700;color:var(--accent);background:var(--accent-soft);padding:5px 11px;border-radius:99px}.badge__sub{font-weight:600;opacity:.8;font-style:italic}.star{background:none;border:none;font-size:23px;line-height:1;color:var(--muted);padding:0 4px;margin-left:auto;transition:transform .15s var(--ease),color .15s}.star:hover{transform:scale(1.15)}.star--on{color:var(--gold)}.qcard__q{font-family:var(--font-display);font-weight:700;font-size:21px;line-height:1.3;letter-spacing:-.02em;margin:0 0 6px}.qcard__imgwrap{display:flex;justify-content:center;background:var(--surface-2);border-radius:var(--radius-sm);padding:10px;margin-bottom:14px}.qcard__img{display:block;max-width:100%;max-height:200px;width:auto;object-fit:contain;border-radius:8px}.qcard__translation{margin:0 0 16px;color:var(--muted);font-size:14.5px;font-style:italic;border-left:3px solid var(--gold);padding-left:12px}.options{list-style:none;margin:0;padding:0;display:grid;gap:10px}.option{width:100%;display:flex;align-items:flex-start;gap:13px;text-align:left;padding:14px 15px;border:1px solid var(--border-strong);border-radius:var(--radius-md);background:var(--surface);font-size:15px;transition:border-color .16s,background .16s,transform .1s,box-shadow .16s}button.option:hover{border-color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.option--selected{border-color:var(--accent);border-width:1.5px}.option--correct{border-color:var(--success);background:var(--success-soft)}.option--wrong{border-color:var(--danger);background:var(--danger-soft)}.option__letter{flex:0 0 25px;height:25px;display:grid;place-items:center;border-radius:7px;background:var(--surface-2);font-size:12px;font-weight:800;color:var(--muted)}.option--correct .option__letter{background:var(--success);color:#fff}.option--wrong .option__letter{background:var(--danger);color:#fff}.option__body{flex:1;display:flex;flex-direction:column;gap:3px}.option__translation{color:var(--muted);font-size:13px;font-style:italic}.option__mark{color:var(--success);font-weight:800}.tip{margin-top:16px;background:var(--gold-soft);border:1px solid color-mix(in srgb,var(--gold) 32%,var(--border));border-radius:var(--radius-md);padding:13px 15px;animation:fade .3s var(--ease) both}.tip__label{font-size:12px;font-weight:700;color:color-mix(in srgb,var(--gold) 72%,var(--text))}.tip p{margin:5px 0 0;font-size:14px}.exambar{position:sticky;top:58px;z-index:10;display:flex;align-items:center;justify-content:space-between;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:11px 15px;margin-bottom:14px;box-shadow:var(--shadow-sm)}.timer{font-variant-numeric:tabular-nums;font-weight:700;font-size:15px}.timer--low{color:var(--danger)}.examintro__list{line-height:2.1;padding-left:20px}.examintro__list strong{color:var(--accent)}.dotgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(38px,1fr));gap:8px;margin-top:18px}.dot{position:relative;aspect-ratio:1;border:1px solid var(--border-strong);border-radius:9px;background:var(--surface);font-size:13px;font-weight:700;color:var(--muted);transition:transform .12s var(--ease),border-color .16s}.dot:hover{transform:translateY(-1px);border-color:var(--accent)}.dot--done{background:var(--accent-soft);color:var(--accent)}.dot--current{border-color:var(--accent);border-width:2px;color:var(--text)}.dot--starred{box-shadow:inset 0 0 0 2px var(--gold)}.dot--starred:after{content:"★";position:absolute;top:-6px;right:-3px;font-size:9px;color:var(--gold)}.resultcard{text-align:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px 22px;box-shadow:var(--shadow);margin-bottom:22px;animation:pop .5s var(--ease) both}.resultcard--pass{border-top:4px solid var(--success)}.resultcard--fail{border-top:4px solid var(--danger)}.resultcard__icon{font-size:46px}.resultcard h1{margin:8px 0;font-size:28px}.resultcard__score{font-family:var(--font-display);font-size:32px;font-weight:800;margin:0 0 8px}.reviewlist{display:grid;gap:14px}.reviewitem{position:relative}.reviewitem__no{position:absolute;top:-9px;left:-6px;z-index:2;width:25px;height:25px;display:grid;place-items:center;border-radius:99px;font-size:12px;font-weight:700;color:#fff;box-shadow:var(--shadow-sm)}.reviewitem.ok .reviewitem__no{background:var(--success)}.reviewitem.bad .reviewitem__no{background:var(--danger)}.examfoot{display:flex;gap:10px;align-items:center;margin-top:18px;padding-top:16px;border-top:1px solid var(--border)}.examfoot .btn--primary{margin-left:auto}.reviewbtn{color:color-mix(in srgb,var(--gold) 70%,var(--text));border-color:color-mix(in srgb,var(--gold) 48%,var(--border))}.history{list-style:none;margin:0;padding:0;display:grid;gap:9px}.history li{display:flex;align-items:center;gap:12px;font-size:14px}.empty{padding:30px 6px;text-align:center}.errorfallback{min-height:60vh;display:grid;place-items:center}.errorfallback .panel{max-width:440px}.kbdoverlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;background:color-mix(in srgb,#000 50%,transparent);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:grid;place-items:center;padding:18px;animation:fade .2s var(--ease) both}.kbdpanel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;width:100%;max-width:520px;box-shadow:var(--shadow-lift);animation:pop .32s var(--ease) both;max-height:86vh;overflow-y:auto}.kbdpanel h2{margin:0 0 4px;font-size:23px}.kbdpanel__sub{color:var(--muted);font-size:13.5px;margin:0 0 18px}.kbdgroup{margin-bottom:18px}.kbdgroup h3{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin:0 0 9px}.kbdrow{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:7px 0;border-bottom:1px dashed var(--border);font-size:14px}.kbdrow:last-child{border-bottom:none}.kbdkeys{display:flex;gap:5px;flex:0 0 auto}kbd,.kbd{font-family:var(--font-body);font-size:12px;font-weight:700;min-width:22px;text-align:center;padding:3px 7px;border-radius:7px;background:var(--surface-2);border:1px solid var(--border-strong);box-shadow:0 2px 0 var(--border-strong)}