:root{--bg:#f5f6fb;--panel:#fff;--text:#1c1f2e;--muted:#6b7085;--border:#e3e5ef;--soft:#f0f1f8;--accent:#4f46e5;--accent-soft:#eceafe;--v1:#2563eb;--v2:#d97706;--v3:#059669;--good:#16a34a;--good-soft:#e8f7ee;--bad:#dc2626;--bad-soft:#fdecec;--shadow:0 1px 2px #1414320f, 0 6px 20px #1414320d;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#11131c;--panel:#1a1d29;--text:#e8e9f1;--muted:#9a9fb5;--border:#2c3042;--soft:#222637;--accent:#8b85ff;--accent-soft:#2a2850;--v1:#6aa2ff;--v2:#f4b34a;--v3:#34d399;--good:#4ade80;--good-soft:#15301f;--bad:#f87171;--bad-soft:#3a1a1c;--shadow:none;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}button,input{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}h1,h2,h3{margin:0 0 .5rem;line-height:1.25}h2{font-size:1.3rem}h3{margin-top:1.25rem;font-size:1.05rem}p{margin:.25rem 0}.muted{color:var(--muted)}.small{font-size:.85rem}.app{max-width:920px;margin:0 auto;padding:16px 16px 40px}.header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.brand{align-items:center;gap:12px;display:flex}.brand h1{margin:0;font-size:1.4rem}.logo{background:var(--accent);color:#fff;border-radius:12px;flex-shrink:0;place-items:center;width:44px;height:44px;font-weight:800;display:grid}.tabs{background:var(--panel);border:1px solid var(--border);z-index:5;box-shadow:var(--shadow);border-radius:14px;grid-auto-columns:1fr;grid-auto-flow:column;gap:6px;margin-bottom:16px;padding:6px;display:grid;position:sticky;top:8px}.tab{color:var(--muted);background:0 0;border:0;border-radius:10px;padding:10px 6px;font-weight:600}.tab.on{background:var(--accent);color:#fff}.panel{background:var(--panel);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:16px;margin-bottom:16px;padding:20px}.tag{color:#fff;vertical-align:middle;border-radius:6px;padding:2px 8px;font-size:.75rem;font-weight:700;display:inline-block}.tag-v1{background:var(--v1)}.tag-v2{background:var(--v2)}.tag-v3{background:var(--v3)}.group-badge{background:var(--accent-soft);color:var(--accent);border-radius:6px;margin-right:8px;padding:2px 8px;font-family:ui-monospace,monospace;font-size:.8rem;font-weight:700;display:inline-block}.en{font-weight:500}.uz{color:var(--muted);font-style:italic}.rule-grid{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:12px;display:grid}.rule-grid.two{grid-template-columns:repeat(2,1fr)}.rule{background:var(--soft);border-radius:12px;padding:14px}.rule h3{margin:8px 0 4px;font-size:.95rem}.rule p{font-size:.9rem}.guide p{line-height:1.6}.guide h3{margin:18px 0 6px;font-size:1rem}.formula-box{background:var(--accent-soft);border-radius:10px;flex-wrap:wrap;align-items:baseline;gap:4px 16px;margin:8px 0 12px;padding:10px 14px;display:flex}.formula-box .en{font-weight:700}.note{background:var(--soft);border-left:4px solid var(--accent);border-radius:8px;padding:10px 14px}.note.warn{border-left-color:var(--v2)}.ex-list{gap:8px;margin:8px 0;padding:0;list-style:none;display:grid}.ex-list li{border-left:3px solid var(--border);flex-direction:column;padding-left:12px;display:flex}.cheat{border:1px solid var(--border);border-radius:12px;overflow:hidden}.cheat-row{border-top:1px solid var(--border);grid-template-columns:2fr .6fr 1.2fr;align-items:center;gap:8px;padding:10px 14px;display:grid}.cheat-row.head{background:var(--soft);color:var(--muted);text-transform:uppercase;border-top:0;font-size:.8rem;font-weight:700}.group-list{margin:8px 0 0;padding:0;list-style:none}.group-list li{justify-content:space-between;align-items:center;gap:8px;font-size:.9rem;display:flex}.mistake-list{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}.mistake-item{background:var(--soft);border-radius:12px;padding:12px 14px}.mistake-item p{margin:0 0 4px}.mistake-item .wrong{color:var(--bad);text-decoration:line-through}.mistake-item .right{color:var(--good);font-weight:600}.tips{padding-left:20px;line-height:1.6}.tips li+li{margin-top:6px}.btn{border:1px solid var(--border);background:var(--panel);border-radius:10px;padding:10px 18px;font-weight:600}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.good{background:var(--good);border-color:var(--good);color:#fff}.btn.bad{background:var(--bad);border-color:var(--bad);color:#fff}.btn.ghost{background:0 0}.btn.small{padding:4px 10px;font-size:.85rem}.btn.big{width:100%;margin-top:20px;padding:14px;font-size:1.05rem}.chips{flex-wrap:wrap;gap:6px;display:flex}.chip{border:1px solid var(--border);background:var(--panel);border-radius:999px;padding:6px 12px;font-size:.9rem}.chip.on{background:var(--accent);border-color:var(--accent);color:#fff}.actions{flex-wrap:wrap;justify-content:center;gap:8px;margin-top:16px;display:flex}.speak{opacity:.75;background:0 0;border:0;padding:0 4px;font-size:.95rem}.speak:hover{opacity:1}.toolbar{flex-direction:column;gap:10px;margin-bottom:12px;display:flex}input[type=search],.field input{border:1px solid var(--border);background:var(--soft);border-radius:10px;width:100%;padding:10px 14px}.verb-table{border:1px solid var(--border);border-radius:12px;overflow:hidden}.verb-row{text-align:left;border:0;border-top:1px solid var(--border);overflow-wrap:anywhere;background:0 0;grid-template-columns:1fr 1fr 1fr 1.4fr;gap:8px;width:100%;padding:10px 14px;display:grid}.verb-row.head{background:var(--soft);color:var(--muted);text-transform:uppercase;border-top:0;font-size:.8rem;font-weight:700}button.verb-row:hover,.verb-item.open>.verb-row{background:var(--accent-soft)}.verb-row .v1{align-items:center;gap:6px;font-weight:700;display:flex}.verb-detail{background:var(--soft);padding:14px}.detail-head{margin-bottom:8px;font-size:1.1rem}.empty{text-align:center;padding:16px}.verb-card{flex-direction:column;gap:12px;display:flex}.forms{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.form{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px}.form.is-highlight{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}.form-label{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.form-word{overflow-wrap:anywhere;margin:6px 0 2px;font-size:1.25rem;font-weight:700}.form-uz{font-weight:500}.examples{gap:8px;display:grid}.example{background:var(--panel);border:1px solid var(--border);border-radius:12px;align-items:flex-start;gap:10px;padding:10px 12px;display:flex}.example .tag{margin-top:3px}.group-note{color:var(--muted);font-size:.9rem}.label{color:var(--muted);margin-bottom:8px;font-size:.95rem}.mode-grid{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.mode{text-align:left;border:2px solid var(--border);background:var(--panel);border-radius:14px;flex-direction:column;gap:4px;padding:14px;display:flex}.mode.on{border-color:var(--accent);background:var(--accent-soft)}.mode-icon{font-size:1.5rem}.quiz-top{justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px;display:flex}.quiz-top h2{margin:0}.score{font-weight:700}.progress{background:var(--soft);border-radius:999px;height:6px;margin-bottom:20px;overflow:hidden}.progress>div{background:var(--accent);height:100%;transition:width .3s}.question{text-align:center}.q-hint{color:var(--muted)}.q-word{overflow-wrap:anywhere;margin:8px 0 0;font-size:2.4rem;font-weight:800}.options{grid-template-columns:repeat(2,1fr);gap:10px;margin:20px 0;display:grid}.option{border:2px solid var(--border);background:var(--panel);border-radius:12px;padding:14px;font-size:1.1rem;font-weight:600}.option:not(:disabled):hover{border-color:var(--accent)}.option:disabled{opacity:1;cursor:default}.option.good{border-color:var(--good);background:var(--good-soft)}.option.bad{border-color:var(--bad);background:var(--bad-soft)}.option.dim{opacity:.5}.write{flex-direction:column;gap:10px;max-width:380px;margin:20px auto;display:flex}.field{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.field input{background:var(--panel);border-width:2px;flex:1;min-width:0;font-size:1.1rem}.field.good input{border-color:var(--good);background:var(--good-soft)}.field.bad input{border-color:var(--bad);background:var(--bad-soft)}.fix{text-align:left;width:100%;color:var(--good);padding-left:44px;font-weight:700}.feedback{text-align:left;border-radius:14px;flex-direction:column;gap:10px;margin-top:8px;padding:16px;display:flex}.feedback.good{background:var(--good-soft)}.feedback.bad{background:var(--bad-soft)}.feedback .btn{align-self:center;min-width:200px}.verdict{font-size:1.1rem;font-weight:700}.formula{font-size:1.3rem}.flashcard{border:2px dashed var(--border);background:var(--soft);border-radius:16px;flex-direction:column;justify-content:center;align-items:center;gap:6px;width:100%;min-height:240px;margin-top:12px;padding:20px;display:flex}.flashcard.back{text-align:left;border-style:solid;align-items:stretch}.flashcard.back .formula{text-align:center}.flip-hint{color:var(--accent);margin-top:12px;font-size:.85rem}.result{text-align:center}.score-ring{--pct:0;background:conic-gradient(var(--accent) calc(var(--pct) * 1%), var(--soft) 0);border-radius:50%;place-items:center;width:120px;height:120px;margin:0 auto 12px;display:grid}.score-ring span{background:var(--panel);border-radius:50%;place-items:center;width:92px;height:92px;font-size:1.6rem;font-weight:800;display:grid}.mistakes{text-align:left;gap:6px;margin:10px 0;display:grid}.mistake{background:var(--soft);border-radius:10px;flex-wrap:wrap;align-items:baseline;gap:4px;padding:8px 12px;display:flex}.footer{text-align:center}@media (width<=640px){.panel{padding:14px}.rule-grid,.rule-grid.two,.mistake-list,.mode-grid,.forms{grid-template-columns:1fr}.tab{flex-direction:column;align-items:center;padding:6px 2px;font-size:.75rem;display:flex}.verb-row{grid-template-columns:1fr 1fr 1fr}.cheat-row{grid-template-columns:1.6fr .5fr 1fr;padding:8px 10px;font-size:.85rem}.hide-sm{display:none}.q-word{font-size:2rem}.options{grid-template-columns:1fr}}