:root{color-scheme:light;--paper:#fffdf8;--bg:#f1eee6;--ink:#263b35;--muted:#68756e;--line:#deded1;--accent:#355b50;--red:#a54a3e}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:var(--accent);text-underline-offset:4px}header,main,footer{max-width:1200px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line)}header a:first-child{text-decoration:none;font-weight:750;letter-spacing:.1em}footer{font-size:13px;color:var(--muted);padding-bottom:40px}.intro{padding:32px 0 42px}.eyebrow{font-size:11px;letter-spacing:.15em;color:var(--muted);font-weight:700}h1{font-family:Georgia,"Songti SC",serif;font-size:clamp(36px,5vw,60px);letter-spacing:-.025em;margin:10px 0 8px;line-height:1.3}h1 span{color:#bb8052}.intro p{color:var(--muted);margin:0}h2{font:600 25px/1.4 Georgia,"Songti SC",serif;margin:8px 0 20px}h3{font-size:16px}.workspace{display:grid;grid-template-columns:1.05fr 1fr;gap:24px;align-items:start}.paper{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:0 4px 24px #263b3504}.paper>label{display:block;margin:14px 0 6px;font-size:14px;font-weight:600}label span,.hint,.privacy{color:var(--muted);font-size:13px;font-weight:400}textarea,select,button,.file-button{font:inherit}select,textarea{color:var(--ink);border:1px solid var(--line);border-radius:8px;background:#fff;width:100%;padding:9px 12px}textarea{resize:vertical;font-family:Georgia,serif;font-size:21px;line-height:1.7;min-height:160px}.row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;font-size:13px;color:var(--muted)}.row select{width:auto;font-size:13px}.row label{white-space:nowrap}button,.file-button{border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--ink);padding:9px 14px;cursor:pointer;font-size:14px;display:inline-block}button:hover:not(:disabled),.file-button:hover{background:#edf0e7}button:disabled{opacity:.45;cursor:default}.primary{background:var(--accent);color:white;border-color:var(--accent)}.primary:hover:not(:disabled){background:#284b41}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #b98755;outline-offset:3px}.controls{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:20px}#timer{font-size:13px;font-variant-numeric:tabular-nums}#status{font-size:14px;min-height:24px}.bad,#storage-warning{color:var(--red)}audio{width:100%;margin:12px 0}.assessment-action{display:flex;gap:10px;margin-top:16px}.privacy{border-top:1px solid var(--line);padding-top:16px}.account{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px}.account button{font-size:12px;padding:5px 9px}.feedback{min-height:400px}#result-reference{font:18px/1.7 Georgia,serif;background:var(--bg);padding:16px;border-radius:8px;white-space:pre-wrap;overflow-wrap:anywhere}.scores{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.score{padding:16px;border-bottom:1px solid var(--line)}.score strong{font:36px Georgia,serif;display:block}.score span{font-size:13px;color:var(--muted)}.words{display:flex;flex-wrap:wrap;gap:8px}.words button{font:17px Georgia,serif;overflow-wrap:anywhere;max-width:100%;border-bottom-width:3px}.words .good{border-bottom-color:#5e8264}.words .fair{border-bottom-color:#bb8b45}.words .weak{border-bottom-color:#b85748}.words .missing{text-decoration:line-through;border-bottom-color:#b85748}.words small{display:block;font:11px/1.6 sans-serif;margin-top:3px}.word-detail{font-size:14px;margin-top:18px;min-height:30px;border-top:1px solid var(--line);padding-top:12px}.history{margin-top:24px}.history ol{padding:0;list-style:none;display:grid;gap:8px}.history li{border-bottom:1px solid var(--line);padding:12px 0;display:flex;align-items:center;gap:16px}.history li>div{flex:1;min-width:0}.history p{margin:4px 0}.history .entry-text{font-family:Georgia,serif;overflow-wrap:anywhere}.history small{color:var(--muted)}.history .entry-actions{display:flex;gap:8px;flex-wrap:wrap}.file-button input{position:absolute;width:1px;height:1px;opacity:0}.file-button:focus-within{outline:3px solid #b98755}.skip{position:absolute;left:24px;top:-100px;background:var(--paper);padding:12px}.skip:focus{top:8px;z-index:1}[hidden]{display:none!important}/* Library, reader, follow-reading */
.tabs{display:flex;gap:6px;margin:0 0 20px;border-bottom:1px solid var(--line)}
.tabs a{padding:10px 18px;text-decoration:none;color:var(--muted);border-bottom:3px solid transparent;margin-bottom:-1px}
.tabs{flex-wrap:wrap}
.tabs a{white-space:nowrap}
.tabs .accent{margin-left:auto;align-self:center}
.tabs a[aria-current=true]{color:var(--ink);font-weight:650;border-bottom-color:var(--accent)}
#view-home,.reader{display:grid;gap:24px}
#view-home[hidden],.reader[hidden]{display:none}
.reader{display:block;margin-bottom:24px}
.workspace{margin-bottom:0}
#view-home{margin-bottom:24px}
.today h2,.reader h2{margin:6px 0 4px}
.today .meta,.reader .meta{color:var(--muted);font-size:14px;margin:0 0 12px}
.intro-text{margin:0 0 12px;max-width:44em}
.tips{color:var(--muted);font-size:14px;margin:0 0 8px;padding-left:20px}
.back{display:block;font-size:14px;text-decoration:none;margin-bottom:10px}
#reader-head .eyebrow,#today .eyebrow{display:block}
.button{display:inline-block;border:1px solid var(--line);border-radius:8px;padding:9px 14px;text-decoration:none;color:var(--ink);font-size:14px}
.button:hover{background:#edf0e7}
a.button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 12px}
.chip{border-radius:20px;padding:5px 14px;font-size:13px}
.chip[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.works{list-style:none;padding:0;margin:0}
.works li{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line)}
.works a{flex:1;display:block;padding:12px 0;text-decoration:none;color:var(--ink);min-width:0}
.works strong{font:600 18px/1.4 Georgia,serif;display:block;overflow-wrap:anywhere}
.works small{color:var(--muted);font-size:13px}
.level{font-size:11px;border:1px solid var(--line);border-radius:10px;padding:1px 8px;color:var(--muted)}
.mode-tabs{display:flex;gap:6px;margin:16px 0;border-bottom:1px solid var(--line)}
.mode-tabs a{padding:8px 16px;text-decoration:none;color:var(--muted);border-bottom:3px solid transparent;margin-bottom:-1px}
.mode-tabs a[aria-current=true]{color:var(--ink);font-weight:650;border-bottom-color:var(--accent)}
label.inline{display:inline-flex;gap:6px;align-items:center;font-size:13px;color:var(--muted)}
label.inline select{width:auto;font-size:13px;padding:6px 8px}
.listen-text{margin-top:8px}
.seg{display:flex;gap:10px;align-items:flex-start;padding:10px 0;border-top:1px solid var(--line)}
.seg-play{flex:none;padding:4px 9px;font-size:12px;border-radius:50%;margin-top:6px}
.seg-text{font:20px/1.85 Georgia,serif;margin:0;white-space:pre-line;overflow-wrap:anywhere}
.w{border-radius:4px;padding:0 1px;cursor:pointer;transition:background .12s}
.w:hover{background:#edf0e7}
.w.past{color:#6f8a7f}
.w.now{background:var(--accent);color:#fff}
.w.picked{text-decoration:underline;text-decoration-color:#b98755;text-underline-offset:5px;text-decoration-thickness:2px}
.word-pop{min-height:28px;margin:12px 0 0;padding:10px 14px;background:var(--bg);border-radius:8px;font-size:14px}
.follow-bar{display:flex;align-items:center;gap:12px}
.follow-bar strong{font-variant-numeric:tabular-nums}
.follow-text{white-space:pre-line;font:24px/1.7 Georgia,serif;margin:12px 0;padding:16px;background:var(--bg);border-radius:8px;overflow-wrap:anywhere}
.all-units{margin-top:12px}
.all-units summary{cursor:pointer;font-size:14px;color:var(--muted)}
.all-units ol{padding-left:0;list-style:none;display:grid;gap:4px;margin:10px 0 0}
.all-units li button{white-space:pre-line;width:100%;text-align:left;border-color:transparent;font:15px/1.5 Georgia,serif}
.all-units li.on button{background:#edf0e7;border-color:var(--line)}
.probe{margin-top:24px}
.probe summary{cursor:pointer;font-weight:600}
#probe-status{font-size:14px}
#library-error{color:var(--red)}
.section-head{margin-bottom:6px}
/* Live words, whole-text reading and the report */
.live{margin:12px 0 0;padding:12px 16px;border:1px solid var(--line);background:#faf9f2;border-radius:var(--radius)}
.live>label.inline{font-size:14px;font-weight:600;color:var(--ink)}
.live .hint{margin:8px 0 0 48px}
.live .hint{margin:4px 0 0}
.live-words{font:20px/1.9 Georgia,serif;margin:10px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}
.lw{border-radius:4px;padding:0 1px}
.lw.hit{background:#dcefe3;color:#1d5a3a}
.lw.miss,.lw.swap{background:#f6d9d4;color:#8f2d20;text-decoration:underline wavy #b0392a}
.lw.now{background:var(--accent);color:#fff}
.lw.pending{color:#98a39d}
.seg-progress{display:flex;gap:4px;margin:0 0 14px}
.seg-progress i{flex:1;height:5px;border-radius:3px;background:var(--line)}
.seg-progress i.done{background:var(--accent)}
.seg-progress i.now{background:#9fbfae}
.follow-text.small{font-size:18px}
.pick-list{list-style:none;padding:0;margin:12px 0;display:grid;gap:2px}
.pick-list li{display:grid;grid-template-columns:auto 1fr;gap:0 10px;align-items:baseline;padding:8px 0;border-top:1px solid var(--line)}
.pick-list small{grid-column:2;color:var(--muted);font:13px Georgia,serif}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:8px;margin:8px 0 16px}
.tiles p{grid-column:1/-1}
.hard-words{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.hard-words li{border-top:1px solid var(--line);padding-top:10px}
.hard-words strong{font:600 20px Georgia,serif}
.tip{background:#f7f1e3;border:1px solid #ecdfc1;border-radius:8px;padding:8px 12px;font-size:14px;margin:6px 0}
.phonemes{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0;font-size:13px;align-items:center}
.phonemes span{font-family:ui-monospace,Menlo,monospace;border:1px solid var(--line);border-radius:6px;padding:1px 7px}
.phonemes span.weak{border-color:#b85748;color:#8f2d20}
.word-detail .controls{margin-top:8px}
/* Archive, word list, reciting */
.strip{margin:0 0 12px;color:var(--muted);font-size:14px}
.archive{margin-bottom:24px}
.archive h3{margin:22px 0 8px}
.week{display:flex;gap:8px;align-items:flex-end;height:80px}
.day{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px}
.day i{display:block;width:100%;max-width:36px;border-radius:4px 4px 0 0;background:var(--line)}
.day i.on{background:var(--accent)}
.day small{color:var(--muted);font-size:12px}
.word-list{list-style:none;padding:0;margin:0;display:grid;gap:2px}
.word-list li{display:flex;align-items:center;gap:12px;padding:6px 0;border-top:1px solid var(--line)}
.word-list li small{margin-left:auto;color:var(--muted)}
.linkish{border:0;padding:2px 0;font:600 18px Georgia,serif;text-decoration:underline;text-decoration-color:#b98755;text-underline-offset:4px}
.review-word{font:600 34px Georgia,serif;margin:6px 0}
.review-detail{background:var(--bg);border-radius:8px;padding:10px 14px;margin:10px 0}
.review-detail p{margin:4px 0}
.w.carry{border-bottom:2px dotted #b98755}
.concealed #reference,.concealed #live-words,.concealed #word-count,.concealed label[for=reference]{display:none}
.follow-text.mask{letter-spacing:.04em;color:#4b5f58}
.levels{display:grid;gap:8px;margin:10px 0}
.level-pick{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);border-radius:8px;cursor:pointer}
.level-pick small{display:block;color:var(--muted);font-weight:400}
.level-pick:has(input:checked){border-color:var(--accent);background:#eef2ea}
/* Controls: one set of shapes for every button, switch, choice and player */
:root{--accent-soft:#e6eee8;--accent-ink:#284b41;--warm:#b98755;--radius:12px;--lift:0 1px 2px #263b3510,0 3px 10px #263b3508}
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
button,.button,.file-button{min-height:40px;padding:8px 16px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;color:var(--ink);font-size:14px;font-weight:560;line-height:1.3;box-shadow:var(--lift);display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;text-decoration:none;transition:background .15s,border-color .15s,box-shadow .15s,transform .05s}
button:hover:not(:disabled),.button:hover,.file-button:hover{background:#f3f7f1;border-color:#c5d0c4}
button:active:not(:disabled),.button:active{transform:translateY(1px);box-shadow:none}
button:disabled{opacity:.45;box-shadow:none;cursor:default}
.primary,a.button.primary{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 1px 2px #263b3530,0 4px 12px #355b5026}
.primary:hover:not(:disabled),a.button.primary:hover{background:var(--accent-ink);border-color:var(--accent-ink)}
.account button,.back,.chip,.word-list button,.words button.linkish{min-height:32px;padding:4px 12px;font-size:13px;box-shadow:none}
.chip{border-radius:999px}
.chip[aria-pressed=true]{box-shadow:none}
.linkish{border:0;background:none;padding:2px 0;min-height:0;box-shadow:none}
.linkish:hover:not(:disabled){background:none}
.seg-play{min-height:32px;width:32px;padding:0;border-radius:50%;font-size:11px;box-shadow:none}
.follow-bar button{width:44px;padding:0}

/* A few options become segments */
.segmented{display:inline-flex;padding:3px;gap:2px;background:#e8e6dc;border-radius:12px;vertical-align:middle}
.segmented button{min-height:30px;padding:2px 14px;border:0;border-radius:9px;background:transparent;box-shadow:none;font-size:13px;font-weight:560;color:var(--muted)}
.segmented button:hover:not(:disabled){background:#ffffff80;border-color:transparent}
.segmented button[aria-checked=true]{background:#fff;color:var(--ink);box-shadow:0 1px 2px #263b3524}
.segmented[aria-disabled]{opacity:.55}
label.inline:has(.segmented){gap:8px}

/* Switches and choices */
label.inline>input[type=checkbox]{appearance:none;-webkit-appearance:none;flex:none;width:38px;height:22px;margin:0;border-radius:11px;background:#c9d0c4;position:relative;cursor:pointer;transition:background .15s}
label.inline>input[type=checkbox]::after{content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0003;transition:transform .15s}
label.inline>input[type=checkbox]:checked{background:var(--accent)}
label.inline>input[type=checkbox]:checked::after{transform:translateX(16px)}
label.inline>input[type=checkbox]:disabled{opacity:.45;cursor:default}
.pick-list input[type=checkbox]{appearance:none;-webkit-appearance:none;flex:none;width:20px;height:20px;margin:0;border:1.5px solid #a9b4a8;border-radius:6px;background:#fff;position:relative;cursor:pointer}
.pick-list input[type=checkbox]:checked{background:var(--accent);border-color:var(--accent)}
.pick-list input[type=checkbox]:checked::after{content:"";position:absolute;left:5px;top:1px;width:6px;height:11px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.pick-list input[type=checkbox]:disabled{opacity:.4;cursor:default}
.level-pick input[type=radio]{appearance:none;-webkit-appearance:none;flex:none;width:20px;height:20px;margin:3px 0 0;border:1.5px solid #a9b4a8;border-radius:50%;background:#fff;cursor:pointer}
.level-pick input[type=radio]:checked{border-color:var(--accent);background:var(--accent);box-shadow:inset 0 0 0 4px #fff}
.level-pick{border-radius:var(--radius)}

/* Fields, folds and the audio player */
select{appearance:none;-webkit-appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%2368756e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m1 1.5 5 5 5-5'/%3E%3C/svg%3E") no-repeat right 12px center;padding-right:34px;border-radius:10px}
textarea{border-radius:var(--radius);padding:12px 14px;transition:border-color .15s,box-shadow .15s}
textarea:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px #355b5022}
details>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px}
details>summary::-webkit-details-marker{display:none}
details>summary::before{content:"";flex:none;width:7px;height:7px;border:solid var(--muted);border-width:0 2px 2px 0;transform:rotate(-45deg);transition:transform .15s}
details[open]>summary::before{transform:rotate(45deg)}
.player{display:flex;align-items:center;gap:12px;margin:12px 0;padding:6px 16px 6px 6px;background:#fff;border:1px solid var(--line);border-radius:999px;box-shadow:var(--lift)}
.player[hidden]{display:none}
.player .toggle{flex:none;width:36px;height:36px;min-height:36px;padding:0;border-radius:50%;background:var(--accent);border-color:var(--accent);color:#fff;font-size:12px;box-shadow:none}
.player .toggle:hover:not(:disabled){background:var(--accent-ink);border-color:var(--accent-ink)}
.player .time{flex:none;min-width:7.2em;text-align:right;font:12px ui-monospace,Menlo,monospace;color:var(--muted);font-variant-numeric:tabular-nums}
.player input[type=range]{flex:1;min-width:0;height:22px;margin:0;appearance:none;-webkit-appearance:none;background:transparent;cursor:pointer;--p:0%}
.player input[type=range]:disabled{cursor:default;opacity:.6}
.player input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:3px;background:linear-gradient(90deg,var(--accent) var(--p),#dde1d4 var(--p))}
.player input[type=range]::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:16px;height:16px;margin-top:-5px;border-radius:50%;background:#fff;border:2px solid var(--accent);box-shadow:0 1px 3px #0003}
.player input[type=range]::-moz-range-track{height:6px;border-radius:3px;background:linear-gradient(90deg,var(--accent) var(--p),#dde1d4 var(--p))}
.player input[type=range]::-moz-range-thumb{width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--accent)}
@media(max-width:480px){.player{gap:8px}.player .time{min-width:0;font-size:11px}}
.notice{margin:12px 0;padding:10px 14px;background:#f8efdb;border:1px solid #ecdcb4;border-radius:var(--radius);color:#7a5316;font-size:14px}
@media(max-width:800px){.tabs a{padding:10px 12px}.tabs .accent{margin:0 0 8px;flex-basis:100%}.workspace{grid-template-columns:1fr}.paper{padding:22px}.intro{padding:26px 0}main,header,footer{padding:18px}.history li{align-items:start;flex-direction:column;gap:8px}label span{display:block}.scores{gap:6px}}