:root{--paper:#f2f5ef;--sheet:#fbfcf9;--ink:#1b2622;--muted:#5d6b65;--line:#d5ddd6;--leaf:#2d7a4c;--leaf-ink:#fbfcf9;--leaf-soft:#dcefe2;--mark:#f3d25c;--mark-ink:#1b2622;--strike:#b83a26;--strike-soft:#f6dcd6;--gold:#b5851c;--gold-soft:#f6ead0;--shadow:0 1px 2px #1b26220f, 0 6px 20px #1b262212;--display:"Bricolage Grotesque", "Avenir Next", "Segoe UI", system-ui, sans-serif;--read:"Literata", "Iowan Old Style", Georgia, serif;--mono:"JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;--ui:"Bricolage Grotesque", system-ui, sans-serif;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px);--tabbar:calc(62px + var(--safe-bottom));--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#121815;--sheet:#19211d;--ink:#e4ece7;--muted:#9aaba3;--line:#2c3833;--leaf:#6cc48f;--leaf-ink:#0f1a14;--leaf-soft:#20382a;--mark:#7d6a1f;--mark-ink:#fff7d6;--strike:#ef7b65;--strike-soft:#3e211b;--gold:#e2b54b;--gold-soft:#3a3019;--shadow:0 1px 2px #0000004d, 0 6px 20px #00000040;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--paper:#121815;--sheet:#19211d;--ink:#e4ece7;--muted:#9aaba3;--line:#2c3833;--leaf:#6cc48f;--leaf-ink:#0f1a14;--leaf-soft:#20382a;--mark:#7d6a1f;--mark-ink:#fff7d6;--strike:#ef7b65;--strike-soft:#3e211b;--gold:#e2b54b;--gold-soft:#3a3019;--shadow:0 1px 2px #0000004d, 0 6px 20px #00000040;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--paper);color:var(--ink);font:16px/1.5 var(--ui);-webkit-tap-highlight-color:transparent;overscroll-behavior-y:none;margin:0}[hidden]{display:none!important}img{max-width:100%;display:block}button{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--leaf);outline-offset:2px}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.app{min-height:100dvh}.screen{max-width:40rem;padding:calc(var(--safe-top) + 12px) max(16px, env(safe-area-inset-right)) calc(var(--tabbar) + 24px) max(16px, env(safe-area-inset-left));align-content:start;gap:16px;margin:0 auto;display:grid}.screen.full{padding-bottom:calc(var(--safe-bottom) + 24px)}.topbar{align-items:center;gap:12px;min-height:44px;display:flex}.topbar h1{font:700 1.5rem/1.1 var(--display);letter-spacing:-.01em;margin:0}.topbar .grow{flex:1}.back{color:var(--leaf);cursor:pointer;background:0 0;border:0;align-items:center;gap:4px;padding:8px 8px 8px 0;font-weight:600;display:inline-flex}.tabbar{z-index:20;height:var(--tabbar);padding-bottom:var(--safe-bottom);background:color-mix(in srgb, var(--sheet) 92%, transparent);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line);grid-template-columns:repeat(3,1fr);display:grid;position:fixed;inset:auto 0 0}.tabbar button{cursor:pointer;color:var(--muted);font:600 .72rem var(--ui);letter-spacing:.02em;background:0 0;border:0;align-content:center;justify-items:center;gap:2px;display:grid;position:relative}.tabbar button svg{width:26px;height:26px}.tabbar button[aria-current=page]{color:var(--leaf)}.tabbar .dot{background:var(--strike);color:#fff;min-width:18px;height:18px;font:700 .68rem/18px var(--ui);border-radius:9px;padding:0 5px;position:absolute;top:8px;left:calc(50% + 8px)}.label{font:500 .68rem/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.num{font-family:var(--mono);font-variant-numeric:tabular-nums}.muted{color:var(--muted)}.small{font-size:.85rem}.panel{background:var(--sheet);border:1px solid var(--line);border-radius:14px;gap:12px;padding:18px;display:grid}.panel h2,.panel h3{font:700 1.1rem/1.2 var(--display);text-wrap:balance;margin:0}.panel h3{font-size:1rem}.panel p{color:var(--muted);margin:0}.row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.row .grow{flex:1}.stack{gap:10px;display:grid}.actions{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.btn{font:600 .98rem var(--ui);border:1px solid var(--line);background:var(--sheet);min-height:46px;color:var(--ink);cursor:pointer;touch-action:manipulation;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:12px 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b{color:var(--ink);font-weight:600}.medal{background:var(--gold-soft);border:2px solid var(--gold);width:52px;height:52px;font:700 1rem var(--display);color:var(--ink);border-radius:50%;flex:none;place-items:center;display:grid}.medal.lg{width:84px;height:84px;margin:0 auto;font-size:1.6rem}.tokens{align-items:center;gap:5px;display:inline-flex}.tok{border:2px solid var(--gold);width:11px;height:11px;transform:rotate(45deg)}.tok.on{background:var(--gold)}.continue{text-align:left;cursor:pointer;background:var(--sheet);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:14px;grid-template-columns:76px 1fr;align-items:center;gap:14px;width:100%;padding:14px;display:grid}.continue .info{gap:4px;min-width:0;display:grid}.continue .info b{font:700 1.05rem/1.25 var(--display);text-overflow:ellipsis;-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.bar{background:var(--line);border-radius:3px;height:6px;overflow:hidden}.bar i{background:var(--leaf);border-radius:3px;height:100%;display:block}.studycard{cursor:pointer;text-align:left;border:1px solid var(--line);background:var(--leaf-soft);width:100%;color:var(--ink);border-radius:14px;align-items:center;gap:14px;padding:16px;display:flex}.studycard .big{font:700 1.8rem/1 var(--mono)}.studycard .grow{flex:1;gap:2px;display:grid}.studycard b{font:700 1.02rem var(--display)}.shelf-head{justify-content:space-between;align-items:baseline;display:flex}.shelf-head h2{font:700 1.15rem var(--display);margin:0}.shelf{grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:18px 14px;display:grid}.booktile{position:relative}.bookmore{width:32px;height:32px;color:var(--ink);cursor:pointer;background:#ffffffe0;border:0;border-radius:50%;place-items:center;display:grid;position:absolute;top:4px;right:4px;box-shadow:0 1px 3px #00000040}.bookmore svg{fill:currentColor;width:18px;height:18px}.bookbtn{text-align:left;cursor:pointer;background:0 0;border:0;gap:6px;padding:0;display:grid}.bookbtn .t{font:600 .84rem/1.25 var(--ui);-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.cover{aspect-ratio:2/3;box-shadow:var(--shadow);background:var(--sheet);border:1px solid var(--line);border-radius:6px 10px 10px 6px;position:relative;overflow:hidden}.cover img{object-fit:cover;width:100%;height:100%}.cover .made{background:linear-gradient(90deg, #0000001f 0 5px, transparent 5px), var(--c,var(--leaf));color:#fff;align-content:space-between;padding:30px 10px 10px 14px;display:grid;position:absolute;inset:0}.cover .made b{font:700 .95rem/1.15 var(--display);-webkit-line-clamp:5;text-wrap:balance;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.cover .made small{font:500 .66rem var(--mono);opacity:.85;text-transform:uppercase;letter-spacing:.05em}.cover .lvl{background:var(--sheet);color:var(--ink);font:700 .66rem/1 var(--mono);border-radius:5px;padding:4px 6px;position:absolute;top:6px;left:6px;box-shadow:0 1px 3px #0003}.cover .ring{background:conic-gradient(var(--leaf) calc(var(--p) * 1%), #ffffffa6 0);border-radius:50%;place-items:center;width:30px;height:30px;display:grid;position:absolute;bottom:5px;right:5px}.cover .ring:after{content:attr(data-p);background:var(--sheet);width:22px;height:22px;color:var(--ink);font:700 .56rem var(--mono);border-radius:50%;place-items:center;display:grid}.cover.processing:after{content:"Reading pages…";color:#fff;font:600 .7rem var(--ui);text-align:center;background:#0009;padding:6px;position:absolute;inset:auto 0 0}.addtile{aspect-ratio:2/3;border:2px dashed var(--line);color:var(--leaf);cursor:pointer;font:600 .84rem var(--ui);background:0 0;border-radius:10px;align-content:center;place-items:center;gap:6px;display:grid}.addtile .plus{font:400 2.4rem/1 var(--display)}.reader{max-width:44rem}.strip{color:var(--muted);flex-wrap:wrap;align-items:center;gap:8px 16px;font-size:.85rem;display:flex}.strip .grow{flex:1}.strikes{vertical-align:middle;align-items:center;gap:5px;display:inline-flex}.pip{border:2px solid var(--leaf);border-radius:50%;width:13px;height:13px}.pip.used{background:var(--strike);border-color:var(--strike)}.pip.last{border-style:dashed;border-color:var(--strike)}.streak{font:700 .85rem var(--display);color:var(--leaf);background:var(--leaf-soft);border-radius:999px;padding:3px 10px}.warnline{color:var(--strike);font-size:.88rem;font-weight:600}.sheet{background:var(--sheet);border:1px solid var(--line);touch-action:pan-y;box-shadow:var(--shadow);border-radius:14px;gap:18px;padding:clamp(18px,5vw,36px);display:grid}.folio{font:500 .7rem var(--mono);color:var(--muted);letter-spacing:.06em;text-transform:uppercase;justify-content:space-between;gap:12px;display:flex}.folio span:first-child{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.para{font:400 1.3rem/1.8 var(--read);overflow-wrap:anywhere;margin:0}.w{font:inherit;color:inherit;cursor:pointer;touch-action:manipulation;background:0 0;border:0;border-radius:3px;margin:0 -1px;padding:0 1px}.w:hover{background:var(--leaf-soft)}.w.rev{background:var(--mark);color:var(--mark-ink)}.w.sel{outline:2px solid var(--leaf);outline-offset:1px}.w.name{-webkit-text-decoration:underline dotted var(--muted);text-decoration:underline dotted var(--muted);text-underline-offset:4px}.def{border-top:1px solid var(--line);gap:6px;min-height:5em;padding-top:14px;display:grid}.def .head{flex-wrap:wrap;align-items:baseline;gap:6px 12px;display:flex}.def .word{font:600 1.15rem var(--read)}.def .lemma{font:500 .78rem var(--mono);color:var(--muted)}.def .meaning{font:400 1.05rem/1.45 var(--read)}.def .meaning.nl{font-style:italic}.def .undo{margin-left:auto}.ctx{border-left:3px solid var(--leaf);gap:4px;padding-left:10px;display:grid}.matched{flex-wrap:wrap;align-items:center;gap:8px;font-size:.85rem;display:flex}.original{border-left:3px solid var(--line);padding-left:12px}.original p{font:400 1.05rem/1.6 var(--read);color:var(--muted);margin:6px 0 0}.nextbtn{margin-left:auto}.big{font:700 clamp(1.5rem, 6vw, 2.1rem)/1.12 var(--display);letter-spacing:-.01em;text-wrap:balance;margin:0}.tablewrap{margin:0 -4px;overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.9rem}th{text-align:left;font:500 .66rem var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--line);padding:6px}td{border-bottom:1px solid var(--line);vertical-align:top;padding:9px 6px}td.n{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums}td .forms{color:var(--muted);font-size:.82rem}.rate{background:var(--line);border-radius:3px;min-width:56px;height:6px;margin-top:7px;overflow:hidden}.rate i{background:var(--strike);height:100%;display:block}.flash{text-align:center;background:var(--sheet);border:1px solid var(--line);min-height:260px;box-shadow:var(--shadow);border-radius:18px;align-content:center;place-items:center;gap:12px;padding:28px 20px;display:grid}.flash .front{font:600 2rem/1.2 var(--read)}.flash .ctxline{font:italic 1.02rem/1.55 var(--read);color:var(--muted);max-width:30em}.flash .ctxline b{color:var(--mark-ink);background:var(--mark);border-radius:3px;padding:0 2px;font-style:normal}.flash .answer{font:400 1.2rem/1.45 var(--read);border-top:1px solid var(--line);gap:4px;width:100%;padding-top:12px;display:grid}.grades{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.grades .btn{border-radius:14px;flex-direction:column;gap:2px;min-height:58px;padding:8px 4px}.grades .btn small{font:500 .7rem var(--mono);opacity:.8}.badges{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.badge{text-align:center;opacity:.38;justify-items:center;gap:4px;display:grid}.badge.got{opacity:1}.badge .medal{width:56px;height:56px}.badge.placement .medal{border-style:dashed}.badge .t{font:600 .8rem/1.2 var(--ui)}.badge .m{color:var(--muted);font-size:.7rem}.checklist{gap:0;display:grid}.checklist div{border-bottom:1px solid var(--line);grid-template-columns:22px 1fr auto;align-items:baseline;gap:8px;padding:7px 0;font-size:.88rem;display:grid}.checklist .ok{color:var(--leaf)}.checklist .bad{color:var(--strike)}.kv{grid-template-columns:auto 1fr;gap:6px 14px;font-size:.9rem;display:grid}.kv dt{color:var(--muted)}.kv dd{margin:0}.tiles{gap:12px;display:grid}.tile{text-align:left;cursor:pointer;background:var(--sheet);border:1px solid var(--line);border-radius:14px;grid-template-columns:52px 1fr;align-items:center;gap:14px;padding:16px;display:grid;position:relative}.tile .ico{background:var(--leaf-soft);width:52px;height:52px;color:var(--leaf);border-radius:12px;place-items:center;display:grid}.tile .ico svg{width:28px;height:28px}.tile b{font:700 1.05rem var(--display);display:block}.tile input[type=file]{opacity:0;cursor:pointer;width:100%;position:absolute;inset:0}.verdict{background:var(--leaf-soft);border-radius:10px;gap:4px;padding:12px 14px;display:grid}.verdict.bad{background:var(--strike-soft)}.verdict.warn{background:var(--gold-soft)}.verdict b{font-family:var(--display)}.steps{gap:6px;display:flex}.steps i{background:var(--line);border-radius:2px;flex:1;height:4px}.steps i.on{background:var(--leaf)}.camera{aspect-ratio:3/4;background:#000;border-radius:14px;width:100%;max-height:52dvh;margin:0 auto;position:relative;overflow:hidden}.camera video{object-fit:cover;width:100%;height:100%;display:block}.camera .guide{pointer-events:none;border:2px dashed #fff9;border-radius:8px;position:absolute;inset:6%}.shutter{border:5px solid var(--sheet);background:var(--leaf);width:74px;height:74px;box-shadow:0 0 0 2px var(--leaf);cursor:pointer;border-radius:50%}.shutter:disabled{opacity:.5}.camrow{grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;display:grid}.thumbs{gap:8px;padding-bottom:4px;display:flex;overflow-x:auto}.thumb{width:64px;font:600 .66rem var(--mono);text-align:center;flex:none;gap:3px;display:grid}.thumb .img{background:var(--line);border:2px solid #0000;border-radius:6px;width:64px;height:86px;position:relative;overflow:hidden}.thumb .img img{object-fit:cover;width:100%;height:100%}.thumb.done .img{border-color:var(--leaf)}.thumb.failed .img,.thumb.check .img{border-color:var(--strike)}.thumb .img .spinner{margin:auto;position:absolute;inset:0}.coverpick{width:132px}.uncertain{flex-wrap:wrap;gap:6px;display:flex}.uncertain input{width:auto;min-width:7ch;min-height:36px;font-family:var(--read);padding:6px 8px}.scrim{z-index:40;background:#12181573;place-items:end center;display:grid;position:fixed;inset:0}.sheetmodal{background:var(--sheet);width:min(40rem,100%);max-height:92dvh;padding:22px max(18px, env(safe-area-inset-left)) calc(22px + var(--safe-bottom));border-radius:20px 20px 0 0;gap:14px;display:grid;overflow:auto;box-shadow:0 -10px 40px #0003}.sheetmodal .grab{background:var(--line);border-radius:3px;width:40px;height:5px;margin:-8px auto 2px}@media (min-width:720px){.scrim{align-items:center}.sheetmodal{border-radius:20px}}.toast{left:50%;bottom:calc(var(--tabbar) + 14px);z-index:60;background:var(--ink);color:var(--paper);max-width:min(92vw,30rem);box-shadow:var(--shadow);border-radius:12px;padding:11px 16px;font-size:.92rem;position:fixed;transform:translate(-50%)}.stats{grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px;display:grid}.stat{background:var(--paper);border-radius:10px;gap:4px;padding:10px 12px;display:grid}.stat b{font:700 1.2rem var(--display)}.share-ios{background:var(--leaf-soft);vertical-align:middle;border-radius:6px;place-items:center;width:26px;height:26px;margin:0 2px;display:inline-grid}.share-ios svg{width:16px;height:16px;color:var(--leaf)}ol.how{gap:8px;margin:0;padding-left:1.3em;display:grid}