:root{--bg:#f2f2f7;--bg-elev:#fff;--bg-grouped:#fff;--fill:#7878801f;--fill-2:#78788033;--label:#000;--label-2:#3c3c4399;--label-3:#3c3c434d;--separator:#3c3c434a;--blue:#007aff;--green:#34c759;--red:#ff3b30;--orange:#ff9500;--yellow:#fc0;--indigo:#5856d6;--purple:#af52de;--bar:#f9f9f9c7;--card-shadow:0 10px 30px #00000014, 0 1px 3px #0000000f;--sat:env(safe-area-inset-top);--sab:env(safe-area-inset-bottom);--tabbar-h:50px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#000;--bg-elev:#1c1c1e;--bg-grouped:#1c1c1e;--fill:#7878803d;--fill-2:#7878805c;--label:#fff;--label-2:#ebebf599;--label-3:#ebebf54d;--separator:#54545899;--blue:#0a84ff;--green:#30d158;--red:#ff453a;--orange:#ff9f0a;--yellow:#ffd60a;--indigo:#5e5ce6;--purple:#bf5af2;--bar:#161617cc;--card-shadow:0 10px 30px 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pop}.option.wrong{background:var(--red);color:#fff;animation:.4s shake}.option.dim{opacity:.4}@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.04)}to{transform:scale(1)}}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-8px)}40%{transform:translate(7px)}60%{transform:translate(-5px)}80%{transform:translate(3px)}}.exercise-footer{min-height:50px}.typing-bottom{flex-direction:column;gap:10px;display:flex}.type-input{background:var(--bg-elev);text-align:center;border:2px solid #0000;border-radius:16px;outline:0;width:100%;height:56px;padding:0 18px;font-size:22px;font-weight:500;transition:border-color .2s}.type-input:focus{border-color:color-mix(in srgb, var(--blue) 50%, transparent)}.type-input.good{border-color:var(--green)}.type-input.bad{border-color:var(--red);animation:.4s shake}.typing-btns{gap:10px;display:flex}.verdict{margin-top:18px}.verdict-title{margin-bottom:6px;font-size:17px;font-weight:700}.verdict-title.good{color:var(--green)}.verdict-title.bad{color:var(--red)}.answer-word{letter-spacing:.5px;font-size:30px;font-weight:700}.answer-word.diff .ok{color:var(--green)}.answer-word.diff .miss{color:var(--red);text-underline-offset:5px;text-decoration:underline;text-decoration-thickness:3px}.answer-word.diff .extra{color:var(--label-3);text-decoration:line-through}.answer-note{color:var(--label-2);margin-top:4px;font-size:15px}.segmented{background:var(--fill);border-radius:9px;margin-top:16px;padding:2px;display:flex;position:relative}.segmented button{z-index:1;flex:1;height:30px;font-size:13px;font-weight:500;position:relative}.segmented button.on{font-weight:600}.segmented .thumb{background:var(--bg-elev);border-radius:7px;position:absolute;top:2px;bottom:2px;box-shadow:0 3px 8px #0000001f,0 3px 1px #0000000a}@media (prefers-color-scheme:dark){.segmented .thumb{background:#636366}}.mode-note{color:var(--label-2);text-align:center;margin-top:8px;font-size:13px}.ai-status{color:var(--indigo)}.field.shimmer::placeholder{color:#0000}.field.shimmer{background:linear-gradient(90deg, transparent 0%, var(--fill) 40%, transparent 80%) 0 0 / 200% 100%;animation:1.1s linear infinite shimmer}@keyframes shimmer{0%{background-position:150% 0}to{background-position:-50% 0}}.suggest{background:color-mix(in srgb, var(--indigo) 14%, transparent);width:calc(100% - 32px);color:var(--indigo);text-align:left;border-radius:10px;margin:10px 16px 0;padding:10px 14px;font-size:15px;display:block;overflow:hidden}.field.autogrow{field-sizing:content;min-height:44px}