:root{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;--bg:#f6f7f9;--surface:#fdfdfe;--ink:#242b38;--muted:#5f697d;--line:#dfe3eb;--accent:#355ed2;--accent-deep:#284bad;--soft:#e9eefc;--accent-ink:#3156b8;--detail:#f1f4fb;--danger:#b33749;--success:#28694f;--ease:cubic-bezier(.23,1,.32,1);color:var(--ink);background:var(--bg);color-scheme:light;scrollbar-color:#b3bccd var(--bg);font-synthesis:none;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer;touch-action:manipulation;transition:background .16s,color .16s}button:disabled{opacity:.42;cursor:default}button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
button:focus:not(:focus-visible),a:focus:not(:focus-visible){outline:none}
input:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}::selection{background:var(--soft);color:var(--accent-ink)}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}h1,h2,p{margin:0}h1{font-weight:600;text-wrap:balance;letter-spacing:-.025em;line-height:1.65}h1:focus{outline:none}.skip{position:fixed;top:-60px;left:20px;z-index:9}.skip:focus{top:10px;background:white;padding:12px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.topbar{max-width:1040px;margin:auto;min-height:100px;padding:24px 32px;display:flex;align-items:center;justify-content:space-between;position:relative}#brand{font-size:20px;font-weight:650;color:var(--accent)}#mode-name{position:absolute;left:50%;transform:translateX(-50%);font-size:14px;color:var(--muted)}.icon{display:inline-grid;place-items:center;min-width:44px;width:44px;height:44px;flex-shrink:0;border:0;border-radius:10px;background:none;color:var(--muted)}.icon:hover,.quiet:hover:not(:disabled){background:var(--soft);color:var(--accent)}.quiet{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;border:0;background:none;color:var(--muted);border-radius:9px;padding:9px 12px;font-size:14px}.primary{display:flex;align-items:center;justify-content:center;gap:13px;min-height:48px;padding:12px 24px;border:0;border-radius:10px;background:var(--accent);color:var(--surface);font-size:14px;font-weight:550}.primary:hover:not(:disabled){background:var(--accent-deep)}.primary:active:not(:disabled){background:#203e94}main{max-width:784px;margin:auto;padding:0 32px 24px}#home{max-width:480px;margin:clamp(40px,10vh,110px) auto 0}#home h1{font-size:30px;margin-bottom:36px}.training{display:flex;gap:12px;margin-bottom:32px}.training button{flex:1;display:flex;align-items:center;justify-content:center;gap:12px;min-height:78px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--muted);font-size:17px}.training button[aria-pressed=true]{border-color:var(--accent);background:var(--soft);color:var(--accent-ink)}.training svg{height:24px;width:24px}.filters{display:grid;gap:20px}.filters label,#model-form>label{display:grid;gap:10px;font-size:13px;color:var(--muted)}select,input{width:100%;min-height:46px;border:1px solid var(--line);background:var(--surface);border-radius:9px;padding:10px 13px;font-size:15px;color:var(--ink)}#begin{width:100%;margin-top:34px}#home-error,#storage-error,#config-error{font-size:13px;line-height:1.7;color:var(--danger);margin-top:16px}#practice{margin:clamp(14px,5vh,56px) auto 0}.sheet{background:var(--surface);border-radius:16px;padding:40px;box-shadow:0 7px 32px rgb(24 43 79 / 4%)}.question-top{position:relative;padding-right:35px;margin-bottom:36px;min-height:92px}#question{font-size:29px;overflow-wrap:anywhere}#question-context{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.7}#question-context:empty{display:none}.hint-toggle{position:absolute;right:-8px;top:0}#hint{background:var(--detail);border-radius:9px;margin:-14px 0 26px;padding:15px 18px;font-size:14px;line-height:1.9;color:var(--muted)}#hint p+p{margin-top:5px}#answer-label{display:block;font-size:13px;color:var(--muted);margin-bottom:12px}.editor{position:relative;border:1px solid var(--line);border-radius:10px;background:var(--surface);overflow:hidden}.editor:has(textarea:focus){border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}textarea{display:block;width:100%;min-height:202px;border:0;outline:none;background:transparent;resize:vertical;padding:20px 20px 54px;font-size:18px;line-height:1.85;caret-color:var(--accent)}.editor .icon{position:absolute;left:10px;bottom:8px;background:var(--surface)}.editor .icon.listening{color:var(--danger);background:#fcf0f0}.action-bar{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-top:28px}.action-bar .quiet{padding-left:0}.action-bar .primary{min-width:140px}.question-nav{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;margin-top:18px;gap:20px;color:var(--muted)}.question-nav button:first-child{justify-self:start}.question-nav button:last-child{justify-self:end}#position{font-size:12px;font-variant-numeric:tabular-nums}#feedback{margin-top:24px;padding-top:23px;border-top:1px solid var(--line)}.feedback-title{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:14px}.feedback-title span{font-size:11px;color:var(--muted)}#verdict{font-weight:600;color:var(--accent-ink)}#feedback[data-verdict=correct] #verdict{color:var(--success)}#feedback[data-verdict=incorrect] #verdict{color:var(--danger)}#issue{font-size:14px;line-height:1.8;margin-top:12px;color:var(--muted)}#issue:empty{display:none}#reference{font-size:18px;line-height:1.85;white-space:pre-wrap;overflow-wrap:anywhere;margin-top:14px;color:var(--ink)}#review-error{font-size:13px;color:var(--danger);line-height:1.8;margin-top:14px}#review-error .quiet{color:var(--accent-ink);font-size:13px;padding-block:0}#voice-copy{font-size:14px;line-height:1.8;color:var(--muted)}.voice-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:28px}.status{font-size:12px;line-height:1.8;color:var(--muted)}#voice-status{margin-top:12px}dialog{border:0;background:var(--surface);border-radius:16px;padding:24px;width:min(440px,calc(100% - 32px));max-height:90dvh;overflow:auto;box-shadow:0 20px 70px #182b4f26}dialog::backdrop{background:#202d464d}.dialog-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}.dialog-head h2{font-size:20px}.dialog-head .icon{margin-right:-9px}#model-form>label{margin-top:18px}#config-status{margin-top:14px}#save-settings{width:100%;margin-top:22px}[hidden]{display:none!important}@media(max-width:600px){.topbar{padding:14px 16px;min-height:76px}#brand{font-size:18px}#mode-name{font-size:13px}main{padding:0 16px 24px}#home{margin-top:44px;padding:0 8px}#home h1{font-size:27px;margin-bottom:28px}.training button{font-size:16px;min-height:72px}#practice{margin-top:20px}.sheet{padding:28px 24px;border-radius:14px}.question-top{min-height:90px;margin-bottom:26px;padding-right:26px}#question{font-size:24px}#question-context{font-size:12px;margin-top:10px}.hint-toggle{right:-13px;top:-6px}textarea{font-size:17px;min-height:200px;padding:16px 16px 50px}.action-bar{margin-top:24px}.action-bar .primary{min-width:126px}.question-nav{margin-top:12px;gap:12px}.question-nav .quiet{font-size:13px}.quiet{font-size:13px}#reference{font-size:17px}select,input{font-size:16px}#hint{font-size:13px}.topbar #exit{padding-left:0}#feedback{padding-top:19px}}@media(max-width:359px){main{padding-inline:12px}.sheet{padding:25px 20px}#question{font-size:22px}.training{gap:8px}.training button{gap:8px}.action-bar .primary{min-width:120px}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

#practice[data-mode=translation] textarea{min-height:168px}

.secondary{display:inline-flex;align-items:center;justify-content:center;min-width:120px;min-height:48px;padding:12px 20px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--muted);font-size:14px}.secondary:hover:not(:disabled){border-color:var(--accent);background:var(--soft);color:var(--accent-ink)}.secondary:active:not(:disabled){background:#dce5fb}

input,select,textarea,button,a{scroll-margin-block:16px}#model-dialog{scroll-padding-block:20px}main:focus{outline:none}

.scope-field{min-width:0;margin:0;padding:0;border:0}.scope-field legend{padding:0;margin-bottom:10px;font-size:13px;color:var(--muted)}.scope-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px;padding:4px;border:1px solid var(--line);border-radius:11px;background:var(--surface)}.scope-options label{position:relative;display:flex;align-items:center;justify-content:center;min-width:0;min-height:44px;border-radius:7px;color:var(--muted);font-size:15px;font-weight:500;cursor:pointer;touch-action:manipulation}.scope-options input{position:absolute;width:1px;height:1px;min-height:0;margin:0;padding:0;opacity:0}.scope-options label:has(input:checked){background:var(--soft);color:var(--accent-ink);font-weight:600}.scope-options label:has(input:focus-visible){outline:2px solid var(--accent);outline-offset:1px}.scope-options label:hover:not(:has(input:checked)){background:var(--bg);color:var(--ink)}

.topbar{gap:12px}.topbar #library-link{margin-left:auto;color:var(--accent-ink)}