/* REFRACTION / v06 — one shared visual system, not accumulated overrides. */
:root{--paper:#f4f1eb;--white:#fcfbf7;--ink:#24231f;--muted:#6e685f;--line:#d8d1c7;--soft:#eae5dc;--accent:#b34029;--tint:#f3e3d9;--danger:#a53529;--positive:#3f6251;--radius:1px;--serif:"Iowan Old Style","Baskerville","Palatino Linotype","Noto Serif CJK SC","Songti SC","STSong","SimSun",serif;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;--ease:cubic-bezier(.2,.8,.2,1);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.6;color:var(--ink);background:var(--paper);font-synthesis:none;scrollbar-gutter:stable}
*{box-sizing:border-box}body{margin:0;overflow-wrap:anywhere}body:before{content:"";position:fixed;inset:0 0 auto;height:3px;background:var(--ink);z-index:99;pointer-events:none}h1,h2,h3,p{margin:0}h1{font-family:var(--serif);font-weight:500;font-size:36px;letter-spacing:.025em;line-height:1.35}h2{font-size:17px;font-weight:550;line-height:1.5}h3{font-size:16px;font-weight:550}button,input,textarea,select{font:inherit;color:inherit}button,a,input,textarea,select,summary{-webkit-tap-highlight-color:transparent}button,summary{touch-action:manipulation}a{color:inherit;text-decoration:none}button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:9px;background:transparent;border:1px solid var(--line);border-radius:var(--radius);padding:9px 15px;font-size:15px;line-height:1.5;cursor:pointer;transition:color 160ms,background-color 160ms,border-color 160ms,transform 160ms var(--ease);position:relative}button:disabled{opacity:.35;cursor:not-allowed}button:active:not(:disabled){transform:translateY(1px)}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button.primary,.primary{background:var(--ink);color:var(--white);border-color:var(--ink)}button.primary:hover:not(:disabled){background:var(--accent);border-color:var(--accent)}button.primary .icon{transition:transform 220ms var(--ease)}button.primary:hover:not(:disabled) .icon{transform:translateX(2px)}.danger,.negative{color:var(--danger)}.positive{color:var(--positive)}.muted{color:var(--muted)}.icon{width:20px;height:20px;flex-shrink:0;vertical-align:middle;pointer-events:none}.icon-button{width:44px;height:44px;padding:11px;background:transparent;border-color:transparent;flex-shrink:0}.icon-button:hover:not(:disabled){color:var(--accent);background:var(--soft)}.icon-button.primary{background:var(--ink);color:var(--white)}.icon-button.primary:hover:not(:disabled){background:var(--accent)}.icon-button.primary:disabled{background:var(--ink)}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}label{display:grid;gap:7px;font-size:15px;min-width:0}input,textarea,select{width:100%;min-width:0;border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;background:var(--white);font-size:16px;line-height:1.65;transition:border-color 140ms,box-shadow 140ms}input,select{min-height:46px}textarea{display:block;resize:vertical;min-height:88px}input:focus,textarea:focus,select:focus{border-color:var(--accent)}textarea::placeholder,input::placeholder{color:#888177;opacity:1}input[type=checkbox]{accent-color:var(--accent);width:19px;height:19px;min-height:19px}button,summary,select{user-select:none}.password-wrap{position:relative;display:block}.password-wrap input{padding-right:52px}.password-wrap .password-toggle{position:absolute;right:2px;top:2px}.search-box{display:flex;align-items:center;position:relative;color:var(--muted)}.search-box>.icon{position:absolute;left:11px;width:18px;height:18px}.search-box input{padding-left:38px;background:transparent;min-height:44px;font-size:15px}.brand{display:inline-flex;align-items:center;gap:13px;white-space:nowrap}.brand-word{font-family:var(--serif);font-size:27px;font-style:italic;font-weight:500;letter-spacing:-.7px;line-height:1}.brand-word em{font-style:normal;color:var(--muted);font-size:21px;letter-spacing:-.5px}.brand-mark{width:29px;height:32px;background:var(--accent);display:inline-block;position:relative;flex-shrink:0;border-radius:0;overflow:hidden;font-size:0;color:transparent}.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--paper);height:3px;width:28px;left:2px;top:9px;transform:rotate(-35deg)}.brand-mark:after{top:20px;left:-2px;width:28px}.topbar{height:80px;max-width:1440px;margin:auto;padding:0 56px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line)}.top-actions{display:flex;align-items:center;gap:4px}.panel-head,.toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px}.toolbar{margin-bottom:26px}.panel-head{margin-bottom:15px}.actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.empty{display:grid;place-items:center;min-height:110px;color:var(--muted);padding:24px;font-size:15px}.is-loading{position:relative!important;cursor:progress!important;color:transparent!important}.is-loading>*{visibility:hidden}.is-loading:after,.spinner{content:"";position:absolute;width:16px;height:16px;left:calc(50% - 8px);top:calc(50% - 8px);border:1.5px solid var(--line);border-left-color:var(--accent);transform:rotate(45deg);animation:frame-turn 900ms cubic-bezier(.45,0,.2,1) infinite}.is-loading.primary:after{border-color:#777066;border-left-color:var(--white)}.loading{height:50vh;position:relative}.spinner{display:block}.ui-dialog{color:var(--ink);background:var(--white);border:1px solid var(--ink);border-radius:0;padding:28px;width:min(480px,calc(100vw - 32px));max-height:85dvh;overflow:auto;box-shadow:10px 10px 0 #24231f12}.ui-dialog:before{content:"";display:block;width:32px;height:3px;background:var(--accent);margin-bottom:18px}.ui-dialog::backdrop{background:#24231f65;backdrop-filter:blur(3px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;gap:18px}.dialog-head h2{font-family:var(--serif);font-size:24px;font-weight:500}.dialog-body{font-size:16px;line-height:1.9;margin-top:18px}.dialog-body p+p{margin-top:12px}.dialog-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:24px}#ui-toast{position:fixed;width:max-content;left:50%;bottom:max(24px,env(safe-area-inset-bottom));translate:-50% 0;max-width:min(680px,calc(100vw - 32px));padding:7px 7px 7px 17px;background:var(--ink);color:var(--white);display:flex;align-items:center;gap:12px;font-size:15px;z-index:80;border-left:3px solid var(--accent);box-shadow:0 6px 30px #24231f1f}#ui-toast>span{min-width:0;overflow-wrap:anywhere}#ui-toast .icon-button:hover{background:#39352e;color:white}#ui-toast>.icon{width:18px;height:18px}#ui-toast[data-kind=error]>.icon{color:#efb19d}details>summary{cursor:pointer;display:flex;align-items:center;gap:10px;list-style:none;min-height:44px}summary::-webkit-details-marker{display:none}details>summary:after{content:"+";margin-left:auto;font-size:19px;font-weight:400;color:var(--muted)}details[open]>summary:after{content:"−"}.account-menu{position:relative}.account-menu summary{width:44px;justify-content:center;padding:0}.account-menu summary:after{display:none}.account-menu[open] summary{background:var(--soft);color:var(--accent)}.account-menu .menu{position:absolute;right:0;top:52px;z-index:20;width:220px;padding:8px;background:var(--white);border:1px solid var(--line);box-shadow:6px 6px 0 #24231f0c}.menu-name{display:block;padding:10px 12px;font-family:var(--serif);font-size:18px}.menu button{width:100%;justify-content:flex-start;border:0}.menu button:hover{background:var(--soft)}.demo-label{font-size:14px;color:var(--muted)}.skip-link{position:fixed;left:12px;top:12px;z-index:100;background:var(--ink);color:white;padding:12px;transform:translateY(-180%)}.skip-link:focus{transform:none}.readable-text{font-size:16px;line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere;margin:0}.readable>summary{align-items:flex-start;min-height:44px}.readable>summary .readable-text{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;flex:1}.readable[open]>summary .readable-text{display:block;-webkit-line-clamp:unset}.distribution.inline-probs,.inline-probs{display:flex;flex-wrap:wrap;align-items:baseline;gap:5px 18px;margin:0;padding:0;min-width:0}.inline-probs .prob-row{position:relative;display:inline-flex;align-items:baseline;gap:8px;font-size:15px;line-height:1.6;padding:2px 0 3px;min-width:0;max-width:100%}.inline-probs .prob-row:after{content:"";position:absolute;bottom:0;left:0;width:100%;height:1px;background:transparent;transform-origin:left}.inline-probs .prob-row.top:after{background:var(--accent)}.prob-label{color:var(--muted);overflow-wrap:anywhere}.prob-row.top .prob-label{color:var(--ink)}.prob-number{font-family:var(--mono);font-size:14px;font-weight:400;white-space:nowrap;font-variant-numeric:tabular-nums;color:var(--muted)}.top .prob-number{font-weight:650;color:var(--accent)}.feedback-row{display:inline-flex;gap:8px;align-items:baseline;font-size:15px}.feedback-row strong{font-family:var(--mono);font-size:14px;font-weight:400}.new-entry{animation:record-reveal 320ms var(--ease) both}.new-entry .prob-row.top:after{animation:ink-draw 430ms var(--ease) both}.motion-ghost{position:fixed;pointer-events:none;z-index:50;margin:0;transform-origin:0 0;font-family:var(--serif);font-weight:500;will-change:transform}.focus-line{height:2px;background:var(--accent);transform-origin:left}.surface-panel,.composer,.exam-panel{contain:layout style}
@keyframes frame-turn{0%,20%{transform:rotate(45deg)}80%,100%{transform:rotate(225deg)}}@keyframes record-reveal{from{clip-path:inset(0 0 100% 0);opacity:.6}to{clip-path:inset(0);opacity:1}}@keyframes ink-draw{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@media(hover:hover){button:not(:disabled):hover{border-color:#9f9587}.icon-button:not(:disabled):hover{border-color:transparent}}
@media(max-width:760px){.topbar{height:68px;padding:0 20px}.brand{gap:10px}.brand-word{font-size:25px}.brand-word em{font-size:19px}.brand-mark{width:25px;height:29px}h1{font-size:29px}.toolbar{margin-bottom:20px;flex-wrap:wrap;gap:12px}.top-actions{gap:0}.ui-dialog{padding:22px}#ui-toast{bottom:max(16px,env(safe-area-inset-bottom))}.inline-probs{gap:4px 14px}.inline-probs .prob-row{gap:6px;font-size:14px}.readable-text{font-size:16px;line-height:1.75}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}