:root{color-scheme:light;--ink:#153c49;--teal:#176665;--line:#d6e1dc;--muted:#536973;--sand:#f6f3ec}*{box-sizing:border-box}body.reader-shell{margin:0;background:var(--sand);color:var(--ink);font-family:Inter,system-ui,-apple-system,sans-serif;font-size:15px}button,input,select,textarea{font:inherit}button,a,select,input{touch-action:manipulation}button{cursor:pointer}button:disabled,select:disabled{cursor:default;opacity:.5}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #d49b35;outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.reader-top{display:flex;align-items:center;gap:30px;background:#153c49;color:#fff;padding:21px 32px}.reader-brand{text-decoration:none;font-size:18px;font-weight:700;white-space:nowrap}.reader-book-title{flex:1}.reader-book-title span{font-size:10px;letter-spacing:.12em;color:#bed8cd}.reader-book-title h1{font-size:21px;margin:5px 0 0;line-height:1.3}.reader-save{display:flex;align-items:center;gap:16px}.reader-save span{font-size:12px;color:#cce2d7;max-width:155px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;border:1px solid transparent;border-radius:10px;padding:9px 15px;color:#fff;background:var(--teal);font-weight:650;font-size:13px;text-decoration:none;white-space:nowrap}.btn.secondary{background:#fff;border-color:var(--line);color:var(--ink)}.btn[aria-pressed=true]{background:var(--teal);color:white;border-color:var(--teal)}.reader-top .btn.secondary{background:#2b5360;border-color:#52707a;color:#fff}.reader-toolbar{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:15px 32px;border-bottom:1px solid var(--line);background:#fff}.tool-group{display:flex;align-items:center;gap:6px}.reader-layout{display:grid;grid-template-columns:minmax(0,1fr);width:100%;max-width:1600px;margin:auto;padding:25px 32px}.book-zone{min-width:0}.page-scroll{padding:10px 12px 22px;overflow:auto;max-height:calc(100vh - 270px);min-height:420px;background:#e3e9e4;border:1px solid #d8e0d9;border-radius:18px}#page-stage{position:relative;width:calc(min(780px,100%) * var(--zoom,1));max-width:none;margin:auto;aspect-ratio:595/842;box-shadow:0 12px 35px #173d5225;background:white;overflow:hidden}#pdf-page{display:block;width:100%;height:100%}#answer-layer,#ink-layer{position:absolute;inset:0;width:100%;height:100%}#answer-layer{pointer-events:none}.page-answer,.page-check,.free-note{position:absolute;pointer-events:auto}.page-answer{background:#ffffff10;color:#143b64;resize:none;border:1px solid transparent;border-radius:2px;padding:0 2px;font:calc(14px * var(--page-scale,1))/1.3 system-ui,sans-serif;overflow:auto;min-height:0}.page-answer:hover,.page-answer:focus{background:#fffdf6e6;border-color:#c39432}.page-check{margin:0;accent-color:var(--teal);cursor:pointer;background:#fff}.free-note{display:flex;gap:0;background:#fffdf4;border:1px solid #bc963f;border-radius:4px;min-height:40px}.free-note textarea{width:100%;height:100%;border:0;background:transparent;resize:none;padding:4px;color:#143b64;font-size:calc(14px * var(--page-scale,1))}.free-note button{position:absolute;right:-8px;top:-12px;background:#173d52;color:white;border:0;border-radius:50%;width:22px;height:22px}#ink-layer{pointer-events:none}#page-stage[data-tool=draw] #ink-layer{pointer-events:auto;touch-action:none}#page-stage[data-tool=draw]{cursor:crosshair}#page-stage[data-tool=write]{cursor:text}.page-nav{display:flex;gap:12px;align-items:center;justify-content:center;padding:18px 0 6px}.page-hint{text-align:center;color:var(--muted);font-size:12px;margin:8px 0}.reader-mark{display:grid;place-items:center;background:#e6f0e8;color:var(--teal);width:49px;height:49px;border-radius:14px;font-size:24px;font-weight:750;flex-shrink:0}.eyebrow{font-size:9px;font-weight:750;letter-spacing:.08em;margin:0 0 6px;color:var(--teal)}select{background:#fff;border:1px solid var(--line);border-radius:8px;color:var(--ink);padding:9px 12px;max-width:100%}.reader-status{max-width:1500px;padding:0 32px 20px;margin:0 auto;color:var(--muted);font-size:13px;line-height:1.7}.reader-status.error{color:#92482d;font-weight:650}.reader-gate{max-width:650px;margin:8vh auto;padding:35px;background:white;border:1px solid var(--line);border-radius:24px}.reader-gate>.reader-mark{margin-top:35px}.reader-gate .eyebrow{margin-top:25px}.reader-gate h1{font-size:34px;line-height:1.2}.reader-gate p{line-height:1.8;color:var(--muted)}.reader-gate .btn{margin:12px 0}.reader-gate .reader-brand{font-size:15px}
@media(max-width:1100px){.reader-top{padding:18px 20px;gap:20px}.reader-toolbar{padding:12px 20px}.reader-layout{padding:20px}.reader-save span{display:none}}
@media(max-width:780px){.reader-top{flex-wrap:wrap;gap:15px}.reader-brand{font-size:15px}.reader-book-title h1{font-size:18px}.reader-book-title span{font-size:9px}.reader-save{margin-left:auto}.reader-toolbar{padding:12px}.tool-group{flex-wrap:wrap}.btn{padding:9px 11px;font-size:12px}.reader-layout{padding:12px}.book-zone{width:100%}.page-scroll{min-height:250px;max-height:65vh;padding:6px}.reader-status{padding:5px 18px 25px}.reader-gate{margin:25px 12px;padding:26px}.reader-gate h1{font-size:29px}}
@media(prefers-reduced-motion:no-preference){#page-stage{animation:reader-open .2s ease-out}@keyframes reader-open{from{opacity:.4;transform:translateY(6px)}to{opacity:1;transform:none}}}.btn[aria-pressed=false]{background:#fff;border-color:var(--line);color:var(--ink)}.free-note{background:transparent;border:0;min-height:0}.free-note textarea{padding:0;overflow:hidden;background:transparent;outline:none}.free-note button{display:none}.free-note:focus-within button{display:block}.page-scroll{max-height:calc(100vh - 200px);min-height:65vh}@media(min-width:781px){.reader-layout{padding-top:12px;padding-bottom:8px}.reader-toolbar{padding-top:9px;padding-bottom:9px}.reader-top{padding-top:13px;padding-bottom:13px}}/* Keep the whole reader, including its tools, in fullscreen. */
#reader-app:fullscreen,#reader-app.is-expanded{width:100%;height:100dvh;max-width:none;max-height:none;background:var(--sand);display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;overflow:hidden}#reader-app.is-expanded{position:fixed;inset:0;z-index:10000}#reader-app:fullscreen .reader-layout,#reader-app.is-expanded .reader-layout{width:100%;max-width:none;height:100%;min-height:0;overflow:hidden;align-items:stretch}#reader-app:fullscreen .book-zone,#reader-app.is-expanded .book-zone{display:flex;flex-direction:column;min-height:0}#reader-app:fullscreen .page-scroll,#reader-app.is-expanded .page-scroll{flex:1;min-height:0;max-height:none}#reader-app:fullscreen #page-stage,#reader-app.is-expanded #page-stage{width:calc(min(780px,100%) * var(--zoom,1))}#reader-app:fullscreen .page-nav,#reader-app.is-expanded .page-nav{padding-top:10px}#reader-app:fullscreen .reader-status:empty,#reader-app.is-expanded .reader-status:empty{padding:0}
@media(max-width:780px){#reader-app:fullscreen .reader-layout,#reader-app.is-expanded .reader-layout{display:grid;grid-template-columns:minmax(0,1fr);overflow:auto;align-items:start}#reader-app:fullscreen .book-zone,#reader-app.is-expanded .book-zone{min-height:65dvh}#reader-app:fullscreen .page-scroll,#reader-app.is-expanded .page-scroll{max-height:70dvh}#reader-app:fullscreen .reader-save,#reader-app.is-expanded .reader-save{gap:6px}}/* Compact chrome leaves the fullscreen height to the workbook. */
#reader-app:is(:fullscreen,.is-expanded) .reader-top{min-height:30px;padding:2px 12px;gap:12px}#reader-app:is(:fullscreen,.is-expanded) .reader-brand{font-size:12px}#reader-app:is(:fullscreen,.is-expanded) .reader-book-title{min-width:0}#reader-app:is(:fullscreen,.is-expanded) .reader-book-title>span{display:none}#reader-app:is(:fullscreen,.is-expanded) .reader-book-title h1{font-size:13px;line-height:1.2;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}#reader-app:is(:fullscreen,.is-expanded) .reader-save{gap:7px;flex-shrink:0}#reader-app:is(:fullscreen,.is-expanded) .reader-save>span{font-size:10px;max-width:110px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}#reader-app:is(:fullscreen,.is-expanded) .btn{min-height:28px;padding:3px 9px;font-size:12px;line-height:18px;border-radius:7px}#reader-app:is(:fullscreen,.is-expanded) .reader-toolbar{padding:3px 12px;gap:6px 12px}#reader-app:is(:fullscreen,.is-expanded) .tool-group{gap:5px}#reader-app:is(:fullscreen,.is-expanded) .reader-toolbar select{height:28px;padding:2px 8px;font-size:12px}#reader-app:is(:fullscreen,.is-expanded) .reader-layout{padding:4px 8px}#reader-app:is(:fullscreen,.is-expanded) .page-scroll{padding:4px;min-height:0;border-radius:8px}#reader-app:is(:fullscreen,.is-expanded) .page-nav{flex:none;height:30px;min-height:30px;gap:7px;padding:2px 0 0;margin:0}#reader-app:is(:fullscreen,.is-expanded) .page-nav .btn{min-height:26px;height:26px;padding:2px 8px}#reader-app:is(:fullscreen,.is-expanded) .page-nav select{height:26px;padding:2px 7px;font-size:12px}#reader-app:is(:fullscreen,.is-expanded) .page-hint{display:none}#reader-app:is(:fullscreen,.is-expanded) .reader-status{max-width:none;margin:0;padding:2px 10px;font-size:11px;line-height:1.35;max-height:46px;overflow:auto}
@media(max-width:780px){#reader-app:is(:fullscreen,.is-expanded) .reader-top{flex-wrap:nowrap;padding:3px 8px;gap:8px}#reader-app:is(:fullscreen,.is-expanded) .reader-brand{font-size:0}#reader-app:is(:fullscreen,.is-expanded) .reader-brand::before{content:'‹';font-size:20px}#reader-app:is(:fullscreen,.is-expanded) .reader-save>span{display:none}#reader-app:is(:fullscreen,.is-expanded) .reader-toolbar{padding:3px 8px;gap:4px}#reader-app:is(:fullscreen,.is-expanded) .book-zone{min-height:calc(100dvh - 120px)}#reader-app:is(:fullscreen,.is-expanded) .page-scroll{max-height:calc(100dvh - 150px)}
}
@media(pointer:coarse){#reader-app:is(:fullscreen,.is-expanded) .btn,#reader-app:is(:fullscreen,.is-expanded) .reader-toolbar select{min-height:36px;height:36px}#reader-app:is(:fullscreen,.is-expanded) .page-nav{height:40px;min-height:40px}#reader-app:is(:fullscreen,.is-expanded) .page-nav select,#reader-app:is(:fullscreen,.is-expanded) .page-nav .btn{min-height:36px;height:36px}
}

/* Drawing shares the same page coordinates at every zoom and paper size. */
#page-stage:is([data-tool=draw],[data-tool=line],[data-tool=paint]) #ink-layer{pointer-events:auto;touch-action:none}
#page-stage:is([data-tool=draw],[data-tool=line],[data-tool=paint]){cursor:crosshair}
#page-stage:is([data-tool=draw],[data-tool=line],[data-tool=paint]) #answer-layer{pointer-events:none}
#page-stage:is([data-tool=draw],[data-tool=line],[data-tool=paint]) :is(.page-answer,.page-check,.free-note){pointer-events:none}
.reader-ink-controls[hidden]{display:none}.reader-ink-controls{gap:12px;flex-wrap:wrap}.reader-color-control,.reader-width-control{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:600}.reader-color-control input{width:38px;height:36px;border:1px solid var(--line);padding:3px;background:white;border-radius:7px;cursor:pointer}.reader-swatches{display:flex;gap:5px}.ink-swatch{width:27px;height:27px;min-width:27px;padding:0;border:2px solid white;border-radius:50%;background:var(--swatch);box-shadow:0 0 0 1px #c5d0cb}.ink-swatch[aria-pressed=true]{outline:2px solid var(--ink);outline-offset:2px}.ink-swatch:focus-visible{outline:3px solid #d49b35;outline-offset:3px}.reader-page-tools{margin-left:auto}.reader-width-control select{max-width:110px}
#reader-app:is(:fullscreen,.is-expanded) .reader-ink-controls{gap:5px 9px}#reader-app:is(:fullscreen,.is-expanded) .reader-color-control input{height:28px;width:32px}
@media(max-width:780px){.reader-ink-controls{flex-basis:100%;gap:10px}.reader-swatches{gap:7px}.ink-swatch{min-height:32px;width:32px;min-width:32px}.reader-page-tools{margin-left:0}.reader-toolbar>.tool-group:first-child{flex-wrap:wrap}}

/* The text helper opens only on request; the workbook remains the main view. */
.reader-layout.has-text-support{grid-template-columns:minmax(0,1fr) minmax(300px,360px);gap:20px;align-items:start}
.reader-text-support[hidden]{display:none}
.reader-text-support{min-width:0;max-height:calc(100dvh - 170px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 8px 24px #153c4908;scrollbar-gutter:stable}
.reader-text-support>header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.reader-text-support h2{font-size:23px;line-height:1.2;letter-spacing:-.5px;margin:0;color:var(--ink)}
.reader-text-support .eyebrow{line-height:1.5;max-width:225px}
#support-close{padding:5px 10px;min-width:35px;min-height:35px;font-size:20px;line-height:1}
.support-intro{color:var(--muted);font-size:13px;line-height:1.65;margin:14px 0 18px}
.support-language-pair{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.reader-text-support label{display:flex;flex-direction:column;gap:7px;min-width:0;font-size:12px;font-weight:650;line-height:1.4;color:var(--ink)}
.reader-text-support select{width:100%;min-width:0;padding:9px 10px;font-size:13px;text-overflow:ellipsis}
.support-selection-actions,.support-text-actions,.support-playback{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}
.reader-text-support .btn{white-space:normal;min-height:38px;line-height:1.4;text-align:center;font-size:12px;padding:8px 11px}
.support-selection-actions .btn{flex:1}
.support-status{margin:12px 0;padding:10px 12px;background:#eff5f0;border-radius:9px;font-size:12px;line-height:1.6;color:#28594c;min-height:39px}
.support-status.error{background:#fff2e8;color:#914728}
.reader-text-support .support-text-label{margin:16px 0 7px}
.support-text{display:block;width:100%;resize:vertical;min-height:100px;max-height:300px;padding:12px;border:1px solid #cddcd6;border-radius:10px;background:#fdfefa;color:#153c49;font-size:15px;line-height:1.65}
.support-text[readonly]{background:#f1f5f2}
.support-text::placeholder{color:#73837f;font-size:12px}
.support-check-text,.support-browser-note,.support-privacy-note{color:var(--muted);font-size:11px;line-height:1.65;margin:8px 0}
.support-browser-note:empty{display:none}
.support-privacy-note{border-top:1px solid var(--line);padding-top:12px;margin:18px 0 0}
.support-voice-settings{border:1px solid var(--line);border-radius:10px;padding:12px;margin-top:18px;background:#fbfcf8}
.support-voice-settings summary{font-size:13px;font-weight:700;cursor:pointer;color:var(--teal)}
.support-voice-settings label{margin-top:14px}
.support-voice-settings .btn{margin-top:12px}
#text-select-layer{position:absolute;inset:0;z-index:5;pointer-events:none}
#page-stage[data-tool=select] #text-select-layer{pointer-events:auto;touch-action:none;cursor:crosshair}
#page-stage[data-tool=select] #answer-layer,#page-stage[data-tool=select] :is(.page-answer,.page-check,.free-note){pointer-events:none}
#text-selection{position:absolute;pointer-events:none;border:2px solid #176665;background:#3d9b8826;box-shadow:0 0 0 1px #fff9;border-radius:2px}
#text-selection[hidden]{display:none}
#reader-app:is(:fullscreen,.is-expanded) .reader-text-support{height:100%;max-height:none;min-height:0;border-radius:10px;padding:16px}
#reader-app:is(:fullscreen,.is-expanded) .reader-text-support .btn{min-height:36px;height:auto;padding:7px 10px}
#reader-app:is(:fullscreen,.is-expanded) .reader-layout.has-text-support{gap:10px;align-items:stretch}
@media(max-width:1000px){.reader-layout.has-text-support{grid-template-columns:minmax(0,1fr);gap:16px}.reader-text-support{max-height:none}.reader-text-support>header{align-items:center}.support-language-pair{max-width:560px}.support-text{max-height:260px}.reader-layout.has-text-support .page-scroll{min-height:40dvh;max-height:65dvh}#reader-app:is(:fullscreen,.is-expanded) .reader-layout.has-text-support{overflow:auto;align-items:start}#reader-app:is(:fullscreen,.is-expanded) .reader-layout.has-text-support .book-zone{min-height:60dvh}#reader-app:is(:fullscreen,.is-expanded) .reader-layout.has-text-support .page-scroll{max-height:60dvh}#reader-app:is(:fullscreen,.is-expanded) .reader-text-support{height:auto;max-height:none}}
@media(max-width:540px){.reader-text-support{padding:17px;border-radius:14px}.reader-text-support h2{font-size:22px}.reader-text-support .btn{min-height:42px}.support-text-actions .btn{flex:1}.support-playback .btn{flex:1}.reader-toolbar>.tool-group:first-child{gap:6px}.reader-toolbar>.tool-group:first-child .btn{min-height:40px}}