@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600;700&display=swap');
:root{font-family:'Be Vietnam Pro',sans-serif;color:#253b36;background:#f6f6ef;font-size:14px}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button{cursor:pointer;border:1px solid #d9ded5;background:transparent;padding:11px 17px;border-radius:10px;color:inherit}button:hover{background:#e8eee4}button:focus-visible,textarea:focus-visible,input:focus-visible{outline:3px solid #b6c975;outline-offset:3px}[hidden]{display:none!important}header{height:88px;border-bottom:1px solid #dfe3d8;display:flex;align-items:center;gap:30px;padding:0 5vw}.brand{font-size:24px;font-weight:700;text-decoration:none;color:inherit;display:flex;align-items:center;gap:12px}.brand span{background:#284d40;color:#eef4cf;padding:7px 12px;border-radius:12px}.tag{color:#758078;flex:1}main{max-width:1250px;margin:48px auto;display:grid;grid-template-columns:300px 1fr;gap:70px;padding:0 28px}h1{font-size:40px;line-height:1.3;letter-spacing:-1.7px;margin:18px 0}h2{font-size:26px;margin:8px 0}h3{font-size:29px;line-height:1.5;margin:26px 0}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;color:#789078}.muted,.note,.foot,.small{color:#7d897f;line-height:1.8}.muted{margin-bottom:35px}.note{font-size:12px;border-top:1px solid #dfe3d8;margin-top:28px;padding-top:22px}.lesson{display:block;width:100%;text-align:left;margin:10px 0;padding:16px}.lesson.active{background:#284d40;color:white;border-color:#284d40}.lesson small{display:block;margin-top:8px;opacity:.65}.topline{display:flex;justify-content:space-between;align-items:center}.stats{display:flex;gap:45px;margin:28px 0}.stats strong{display:block;font-size:27px}.stats span{color:#7d897f;font-size:12px}.card{background:#fff;border:1px solid #e4e7de;border-radius:22px;padding:30px 36px;box-shadow:0 12px 32px #233c3006}.cardtop{display:flex;justify-content:space-between;color:#7d897f;font-size:11px}.track{height:4px;background:#edf0e7;margin:18px 0 30px;border-radius:4px}.track div{height:100%;background:#a4b960;border-radius:4px}details{margin:0 0 26px;color:#6d866f}summary{cursor:pointer}label{display:block;margin:18px 0 10px;font-size:12px;font-weight:600}textarea,input:not([type=file]){width:100%;border:1px solid #dce2d7;border-radius:12px;background:#fafbf7;padding:15px;color:#253b36}#answer{font-size:24px;resize:vertical}.small{font-size:11px}.actions{display:flex;justify-content:space-between;gap:10px;margin-top:24px}.primary{background:#284d40;color:white;border-color:#284d40}.primary:hover{background:#3b6652}#feedback{background:#f4f5e9;padding:18px;border-radius:12px;line-height:1.8}#feedback.good{background:#e8f1df}#feedback strong{display:block;font-size:23px}#feedback p{margin:6px 0}.foot{font-size:11px;margin:18px 2px}#self{font-size:12px}dialog{max-width:620px;width:92%;border:0;border-radius:20px;padding:30px;color:#253b36}dialog::backdrop{background:#203b3680}dialog p{line-height:1.8}.close{float:right;border:0;font-size:20px}#importError{color:#a64c38}#notice{color:#6d866f}@media(max-width:850px){main{grid-template-columns:1fr;gap:24px;margin:24px auto}h1{font-size:30px}aside .muted{margin-bottom:12px}#lessons{display:flex;gap:8px;overflow:auto}.lesson{min-width:190px}.note{margin-top:8px}.tag{display:none}header{justify-content:space-between;height:76px}.card{padding:24px}h3{font-size:24px}.stats{gap:28px}.topline button{font-size:12px;padding:10px}h1 br{display:none}}

@media(min-width:851px){#lessons{max-height:62vh;overflow-y:auto;padding-right:6px}}#hint{white-space:pre-line}

.audio-controls{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px}.audio-controls span{font-size:12px;margin-right:4px}.audio-controls button{background:white;padding:9px 14px;font-size:13px}.audio-controls button:hover{background:#e8eee4}.audio-controls button:disabled{opacity:.5;cursor:default}

.ime-setting{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;margin:10px 0}.ime-setting label{margin:0;display:flex;align-items:center;gap:7px}.ime-setting span{font-size:10px;color:#7d897f}.ime-setting input{accent-color:#284d40}.ime-popup{background:#263c36;color:#eef5e5;border-radius:12px;padding:10px 12px;margin-top:6px;box-shadow:0 5px 18px #203b3630}#imeRaw{font-size:13px;border-bottom:1px solid #ffffff20;padding-bottom:6px;overflow-wrap:anywhere}#imeCandidates{display:flex;flex-wrap:wrap;gap:5px;padding-top:7px;font-size:12px}#imeCandidates button{border:0;padding:5px 10px;color:white;font-size:19px;max-width:100%;overflow-wrap:anywhere;text-align:left}#imeCandidates button:first-child{background:#456952}#imeCandidates button:hover{background:#537b60}.ime-nav{display:flex;justify-content:flex-end;align-items:center;gap:10px;font-size:10px;margin-top:4px}.ime-nav button{padding:1px 8px;border:0;color:#eef5e5}.ime-nav button:disabled{opacity:.3}

/* Compact candidate strip and grouped book library. */
.ime-setting label{white-space:nowrap;font-size:12px;flex-shrink:0}.ime-setting input[type=checkbox]{width:16px;height:16px;margin:0;padding:0;flex:0 0 16px}.ime-setting span{font-size:10px}#imePopup{width:max-content;max-width:100%;padding:5px 8px;border-radius:8px}#imeRaw{font-size:11px;padding-bottom:3px}#imeCandidates{gap:2px;padding-top:3px;max-width:480px}#imeCandidates button{font-size:14px;padding:3px 7px;border-radius:5px}.ime-nav{font-size:9px;margin-top:2px;gap:6px}.ime-nav button{font-size:11px}.book-group{margin:12px 0;color:inherit;border:1px solid #dce2d7;border-radius:12px;padding:12px}.book-group>summary{font-size:13px;font-weight:600;line-height:1.6}.book-group>summary small{display:block;font-size:10px;font-weight:400;color:#7d897f;margin-top:6px}.book-group .lesson{font-size:12px;padding:12px;margin:8px 0}.book-group .lesson small{font-size:10px}#vocabHint summary small{font-size:10px;background:#edf0e7;border-radius:4px;padding:2px 5px;margin-left:7px}@media(max-width:850px){#lessons{display:block;overflow:visible}.book-group .lesson{min-width:0}.book-group{max-height:300px;overflow:auto}}

@media(max-width:850px){header{gap:8px;padding:12px 16px;height:auto;min-height:76px;flex-wrap:wrap}.brand{font-size:20px;margin-right:auto}.brand span{padding:5px 8px}header>button{font-size:11px;padding:8px 10px}}

main{max-width:1480px;grid-template-columns:280px minmax(0,1fr);gap:40px}.prompt-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,330px);gap:24px;align-items:start}.prompt-pane{min-width:0}.prompt-pane h3{font-size:27px}.writing-panel{border:1px solid #e5e7df;border-radius:14px;background:#fafbf7;padding:14px;max-height:450px;overflow:auto}.writing-panel>.eyebrow{margin:0}.writing-word{padding:10px 0;border-bottom:1px solid #e4e7df}.writing-word:last-child{border-bottom:0}.writing-word>strong{font-size:19px}.writing-pinyin{font-size:11px;color:#7d897f}.writing-meaning{font-size:11px;color:#718173;margin:5px 0 9px;line-height:1.6}.hanzi-cells{display:flex;flex-wrap:wrap;gap:6px}.character-wrap{text-align:center}.hanzi-cell{position:relative;width:88px;height:88px;background:white;cursor:pointer}.hanzi-grid,.hanzi-glyph{position:absolute;inset:0;width:88px;height:88px}.glyph-fallback{font-family:serif;font-size:62px;color:#c82424;display:grid;place-items:center}.stroke-play{font-size:10px;padding:4px 6px;border:0;margin-top:3px}.sentence-explanation{border-top:1px solid #ccd7c3;margin-top:22px;padding-top:18px}.sentence-explanation h4{margin:0 0 12px;font-size:16px}.sentence-formula{background:#fff;border:1px solid #dce4d5;border-radius:9px;padding:10px 12px;font-weight:600;font-size:13px}.sentence-explanation ul{padding-left:19px;margin:12px 0 0;font-size:12px;line-height:1.8}.sentence-explanation li{margin:9px 0}@media(max-width:1150px){.prompt-grid{grid-template-columns:1fr}.writing-panel{max-height:300px}.prompt-pane h3{font-size:24px}}@media(max-width:850px){main{grid-template-columns:1fr;gap:24px}.writing-panel{padding:12px}.card{padding:20px}.prompt-grid{gap:12px}}
/* KungFuHSK: warm paper, bamboo greens, and a little panda company. */
:root{background:#f4f6e9;color:#294236}body{background:radial-gradient(ellipse at 90% 8%,#dfecc8 0,transparent 45%),#f7f7ed}header{background:#fffdf4d9;backdrop-filter:blur(10px)}.brand{font-size:25px;letter-spacing:-1px}.brand img{width:53px;height:53px}.tag{font-size:12px;color:#81936c}.panda-welcome{display:flex;gap:13px;align-items:center;margin:20px 0}.panda-welcome img{width:82px;height:82px}.panda-welcome span{font-size:17px;font-weight:600}.panda-welcome small{display:block;font-size:11px;color:#80936d;margin-top:7px}aside{position:relative}aside:after{content:'';position:absolute;right:-12px;top:190px;width:75px;height:150px;background:url('assets/bamboo.svg') center/contain no-repeat;opacity:.17;pointer-events:none}h1{font-size:36px}.card{border-radius:25px;border-color:#dde5cf;box-shadow:0 10px 35px #395a2c07}.primary,.lesson.active{background:#3d6246;border-color:#3d6246}.eyebrow{color:#75915d}.book-group{background:#fffdf6}.study-tabs{display:flex;gap:8px;margin:24px 0 14px;background:#e9eedb;padding:5px;border-radius:14px;width:max-content;max-width:100%}.study-tabs button{border:0;font-weight:600;font-size:13px}.study-tabs button.active{background:#fffdf6;box-shadow:0 2px 7px #253b3610;color:#3d6246}.flash-toolbar{display:flex;justify-content:space-between;gap:12px;align-items:center;margin:23px 0;color:#81936c;font-size:12px}.flash-toolbar>div{display:flex;gap:7px}.flash-toolbar button{font-size:11px;padding:9px 12px}.flash-card{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;width:100%;min-height:360px;padding:30px;background:#fffdf5;border:1px solid #d9e1c6;border-radius:28px;box-shadow:0 15px 35px #36563409;position:relative;overflow:hidden}.flash-card:after{content:'';background:url('assets/bamboo.svg') center/contain no-repeat;position:absolute;right:12px;bottom:-15px;width:95px;height:190px;opacity:.12;pointer-events:none}.flash-card:hover{background:#fffef8}.flash-card.flipped{background:#edf4df}.flash-eyebrow{font-size:10px;letter-spacing:2px;color:#7f976c}#flashWord{font-family:'Kaiti SC','STKaiti',serif;font-size:80px;line-height:1.4;color:#2d4f36;overflow-wrap:anywhere;max-width:100%}#flashPinyin{font-size:23px;color:#699054}#flashMeaning{font-size:23px;font-weight:600;max-width:90%;line-height:1.6}#flashTip{font-size:11px;color:#97a385}.flash-nav,.flash-grading{display:flex;justify-content:center;gap:12px;margin-top:20px}.flash-nav button{font-size:12px}.flash-grading button{min-width:145px}.flash-grading button:disabled{opacity:.4;cursor:default}#flashStatus{font-size:12px;color:#71905b;min-height:22px}@media(max-width:850px){.brand{font-size:20px}.brand img{width:42px;height:42px}.panda-welcome img{width:65px;height:65px}h1{font-size:30px}.flash-toolbar{flex-wrap:wrap}.flash-card{min-height:300px;padding:22px}#flashWord{font-size:65px}#flashMeaning{font-size:19px}.flash-nav,.flash-grading{gap:6px}.flash-nav button{font-size:10px;padding:10px}.flash-grading button{min-width:0;flex:1}.topline{align-items:flex-start;gap:12px}}

.card-labels{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}.difficulty{padding:5px 11px;border-radius:20px;background:#e8f0df;color:#3d6544;font-size:12px;font-weight:700}.difficulty[data-level="medium"]{background:#fff1cf;color:#816223}.difficulty[data-level="advanced"]{background:#e9e5f5;color:#65508a}#levelDistribution{margin:0 0 18px}#flashAudio small{margin-left:5px;opacity:.7}[hidden]{display:none!important}

/* A compact prompt and answer beside the character-writing panel. */
.slogan-scene{display:flex;align-items:center;gap:12px;margin:22px 0 30px;position:relative;z-index:1}.slogan-scene>img{width:82px;height:82px;flex:0 0 82px}.speech-bubble{position:relative;margin:0;padding:17px 16px;border:2px solid #3d6246;border-radius:20px 20px 20px 5px;background:#fffdf6;font-size:17px;line-height:1.5;letter-spacing:-.3px;font-weight:500;box-shadow:0 5px 14px #3656340a}.speech-bubble:before{content:'';position:absolute;left:-9px;top:36px;width:15px;height:15px;background:#fffdf6;border-left:2px solid #3d6246;border-bottom:2px solid #3d6246;transform:rotate(45deg)}.speech-bubble em{font-style:normal;font-weight:700;color:#3d6246}.book-group{border:2px solid #3d6246;box-shadow:0 2px 8px #3d62460a}.book-group>summary{color:#294f36}.topline{gap:20px}.topline .eyebrow{margin:0 0 8px}.topline #lessonDescription{margin:8px 0 0}.prompt-pane h3{margin:0 0 24px}.prompt-pane #vocabHint{margin-bottom:20px}.answer-pane{margin-top:18px}.answer-pane label{margin-top:0}.answer-pane #answer{height:112px;min-height:88px;max-height:230px;font-size:23px;line-height:1.55}.answer-pane>.small{margin:8px 0 0}.writing-panel{max-height:430px}.writing-word:first-child{padding-top:0}.card .actions{margin-top:20px}#feedback:not([hidden]){margin-top:20px}.clause-breakdown{font-size:12px}.clause-breakdown strong{font-size:15px!important}aside:after{top:80px;opacity:.1}
@media(min-width:1151px){.prompt-grid{grid-template-columns:minmax(0,1fr) minmax(220px,290px);gap:28px}}
@media(max-width:1150px){.writing-panel{max-height:240px}.prompt-pane h3{margin-bottom:18px}.answer-pane{margin-bottom:6px}}
@media(max-width:850px){.slogan-scene{max-width:420px;margin:14px 0 24px}.slogan-scene>img{width:70px;height:70px;flex-basis:70px}.speech-bubble{font-size:16px;padding:14px 16px}.answer-pane #answer{height:100px;font-size:22px}.writing-panel{max-height:230px}}

.po-portrait{width:92px;height:100px;flex:0 0 92px;position:relative;overflow:hidden;border-radius:50%;border:2px solid #d5e2bc;background:#dbe6c5}.po-portrait img{position:absolute;width:224px;max-width:none;height:auto;left:-79px;top:-27px}.slogan-scene{gap:13px}.speech-bubble{font-size:16px;padding:14px 13px}@media(max-width:850px){.po-portrait{width:92px;flex-basis:92px}.speech-bubble{font-size:16px}}

/* Show the complete user-provided film still, without zoom or cropping. */
.slogan-scene{display:block}.po-portrait{width:100%;height:auto;aspect-ratio:1000/791;border-radius:16px;overflow:hidden;border:1px solid #c5d6b4}.po-portrait img{position:static;display:block;width:100%;max-width:100%;height:auto}.speech-bubble{margin:14px 0 0;border-radius:18px;padding:14px 17px;font-size:17px}.speech-bubble:before{left:30px;top:-9px;border-left:2px solid #3d6246;border-top:2px solid #3d6246;border-bottom:0}.slogan-scene .speech-bubble br{display:none}.speech-bubble em{display:block;margin-top:3px}@media(max-width:850px){.slogan-scene{max-width:340px}.po-portrait{width:100%;height:auto}.speech-bubble{font-size:17px}}