@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&display=swap');
:root{--bg:#f7f8fc;--white:#fff;--ink:#20243b;--muted:#7d8195;--line:#e9eaf2;--purple:#7261d5;--soft:#eeeafb;--green:#679989}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 'Noto Sans SC',system-ui,sans-serif}button,input,textarea,select{font:inherit}button,a,label.file-label{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.4;cursor:not-allowed}a{color:var(--purple);text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #b6a8f1;outline-offset:3px}[hidden]{display:none!important}.sidebar{position:fixed;inset:0 auto 0 0;width:218px;background:#fff;border-right:1px solid var(--line);padding:34px 22px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-size:24px;font-weight:700;letter-spacing:3px}.logo{display:grid;place-items:center;background:var(--purple);color:white;width:43px;height:43px;border-radius:15px;font-size:25px;letter-spacing:0;transform:rotate(-5deg)}.brand small{display:block;font-size:8px;letter-spacing:2.3px;font-weight:500;color:var(--muted)}.nav-label{font-size:10px;color:#999cb0;margin:48px 12px 14px;letter-spacing:1.5px}.nav{border:0;background:none;width:100%;display:flex;gap:14px;align-items:center;padding:13px 16px;text-align:left;color:#777b90;margin-bottom:7px;border-radius:10px;font-size:16px}.nav span{font-size:13px}.nav.active{background:var(--soft);color:var(--purple);font-weight:600}.nav b{margin-left:auto;background:#ded7f8;font-size:10px;border-radius:6px;padding:0 5px}.sidebar-bottom{margin-top:auto;padding:24px 12px 0}.daily-icon{font-size:12px;color:var(--purple);letter-spacing:1px}.sidebar-bottom p{font-size:17px;line-height:1.9}.sidebar-bottom small{font-size:10px;color:var(--muted)}.text-button{border:0;background:none;color:var(--purple);padding:5px 0;font-size:12px;cursor:pointer}.sidebar-bottom .text-button{display:block;margin-top:8px}main{margin-left:218px;max-width:1700px;padding:0 38px}header{height:87px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.breadcrumb{font-size:11px;color:var(--muted)}.breadcrumb span{margin:0 13px;color:#c4c6d2}.breadcrumb b{font-weight:500;color:var(--ink)}.pill{background:#edf4f0;color:#658777;border:1px solid #e1ece6;padding:5px 12px;border-radius:30px;font-size:10px}.pill i{display:inline-block;width:5px;height:5px;background:#70a48c;border-radius:50%;margin-right:6px}.page-heading{padding:32px 0 26px}.eyebrow{font-size:9px;letter-spacing:2px;color:var(--purple);font-weight:600}h1{font-size:28px;letter-spacing:-.7px;line-height:1.4;margin:10px 0}h1 span{color:var(--purple)}.page-heading p{font-size:12px;color:var(--muted);margin:0}.session-bar{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:19px}.session-bar>div:first-child{display:flex;align-items:center;gap:10px}.session-icon{font-size:22px;color:var(--purple)}.session-bar b{font-size:12px}#session-time{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}.steps{display:flex;gap:6px}.steps button{border:0;background:transparent;font-size:11px;padding:8px 12px;border-radius:6px;color:var(--muted)}.steps button.selected{background:var(--soft);color:var(--purple)}.steps small{margin-left:6px;font-size:9px}.button{border:1px solid transparent;padding:9px 16px;border-radius:7px;font-size:12px;white-space:nowrap;font-weight:500}.primary{background:var(--purple);color:white}.primary:hover{background:#6150c2}.secondary{background:#fff;color:#62677e;border-color:var(--line)}.secondary:hover{background:#f6f4fc}.import-bar{display:flex;align-items:center;gap:13px;padding:8px 10px 8px 16px;border:1px solid var(--line);background:#fff;border-radius:10px;margin-bottom:22px}.youtube-icon{color:white;background:#e76a76;font-size:11px;padding:0 6px;border-radius:5px}.import-bar input{flex:1;min-width:0;border:0;padding:6px;background:none;font-size:12px}.workspace{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(310px,1fr);gap:24px}.video-shell{aspect-ratio:16/9;min-height:230px;border-radius:12px;overflow:hidden;background:#202139}#player,#player iframe{width:100%;height:100%}.empty-player{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#e4e1f3;background:radial-gradient(ellipse at 30% 20%,#3d385c 0,transparent 60%),linear-gradient(145deg,#28283f,#181c30)}.play-art{font-size:32px;line-height:65px;text-align:center;width:65px;height:65px;border:1px solid #80739a77;background:#ffffff08;border-radius:22px;color:#c0b2f4;margin-bottom:9px}.empty-player h2{font-size:17px;font-weight:500;margin:9px}.empty-player p{font-size:11px;color:#a5a0bb;margin:0 0 20px}.empty-tags{display:flex;gap:8px}.empty-tags span{font-size:9px;background:#ffffff08;color:#ada7c5;padding:4px 10px;border:1px solid #ffffff10;border-radius:20px}.hint{font-size:10px;color:var(--muted);margin:9px 0;min-height:16px}.video-info{display:flex;justify-content:space-between;align-items:center;padding:13px 0 19px;gap:15px}.video-info h2{font-size:16px;margin:5px 0;overflow-wrap:anywhere}.video-info a{font-size:10px;white-space:nowrap}.panel{background:white;border:1px solid var(--line);border-radius:12px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.panel-heading h3{font-size:13px;margin:0}.panel-heading>span{font-size:11px;color:var(--muted)}.clip-panel{padding:18px}.clip-controls{display:flex;align-items:end;gap:10px;margin:18px 0}.clip-controls label{font-size:9px;color:var(--muted);flex:1}.clip-controls input{display:block;width:100%;min-width:55px;border:1px solid var(--line);background:var(--bg);border-radius:6px;padding:7px 10px;font-size:12px;color:var(--ink);margin-top:5px}.clip-controls button{font-size:10px;padding:8px}.dash{padding-bottom:6px;color:#c1c2d0}.play-controls{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.play-controls .button{font-size:11px;padding:8px 12px}.speed{margin-left:auto;font-size:10px;color:var(--muted)}select{border:0;background:var(--bg);border-radius:5px;padding:6px;color:var(--ink)}.tip{display:flex;gap:12px;color:#858099;background:#f0edf8;border:1px solid #e9e3f6;border-radius:9px;padding:12px 16px;margin-top:17px}.tip>span{color:var(--purple);font-size:20px}.tip p{font-size:11px;margin:0}.tip b{display:block;color:#6b608d;font-weight:500;margin-bottom:2px}.transcript-panel{overflow:hidden;display:flex;flex-direction:column}.transcript-panel>.panel-heading{padding:20px}.import-sub{font-size:10px;color:var(--purple);cursor:pointer}.mode-tabs{display:flex;padding:0 20px;gap:20px;border-bottom:1px solid var(--line)}.mode-tabs button{border:0;background:none;padding:0 0 12px;color:var(--muted);font-size:11px}.mode-tabs button.selected{color:var(--purple);border-bottom:2px solid var(--purple)}.transcript-description{font-size:10px;color:var(--muted);padding:13px 20px}.transcript-list{height:245px;overflow:auto;padding:0 12px}.empty-transcript{text-align:center;padding:22px 10px;color:var(--muted)}.empty-transcript>span{color:#a497ce;font-size:28px}.empty-transcript h3{font-size:13px;color:#6f7289;margin:9px 0}.empty-transcript p{font-size:11px;line-height:1.9}.empty-transcript small{font-size:9px;color:#aaa9b7}.cue{display:flex;gap:10px;align-items:start;border-radius:8px;padding:10px;margin:3px 0;background:#f9f9fc}.cue.current{background:var(--soft);box-shadow:inset 3px 0 var(--purple)}.cue button{border:0;background:transparent;color:var(--purple);font-size:10px;padding:3px;white-space:nowrap}.cue p{flex:1;margin:0;font-size:13px;white-space:pre-wrap}.cue .masked{font-size:11px;color:var(--muted)}.note-area{border-top:1px solid var(--line);padding:17px 20px;margin-top:auto}.note-area>label{font-size:11px;font-weight:500}textarea,input{color:var(--ink)}textarea{resize:vertical}.note-area textarea,.note-area input{width:100%;border:1px solid var(--line);background:#fafafe;padding:10px 12px;border-radius:7px;font-size:11px}.note-area textarea{height:67px;margin:9px 0 15px}.expression-heading{display:flex;justify-content:space-between;align-items:center;gap:6px;font-size:11px;margin-bottom:10px}.expression-heading span{font-size:9px;color:var(--muted)}#expression-form{display:grid;gap:8px}footer{display:flex;justify-content:space-between;margin:32px 0 22px;font-size:10px;color:#9c9eaf}footer span{font-size:9px}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px}.study-card{background:white;border:1px solid var(--line);border-radius:12px;padding:24px;overflow-wrap:anywhere}.study-card h3{font-size:22px;margin:12px 0}.study-card p{white-space:pre-wrap}.study-card small{color:var(--muted)}.study-card .actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.study-card .answer{padding:12px;background:var(--soft);border-radius:8px}.empty-state{padding:40px;border:1px dashed #d8d2e8;border-radius:12px;color:var(--muted);grid-column:1/-1}.empty-state h3{color:var(--ink)}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#26243b;color:white;padding:12px 22px;border-radius:9px;box-shadow:0 8px 30px #0002;z-index:10;max-width:90vw;font-size:12px}@media(min-width:1500px){main{padding:0 55px}.transcript-list{height:330px}}@media(max-width:1150px){.sidebar{width:185px;padding:28px 16px}main{margin-left:185px;padding:0 24px}.steps small{display:none}.workspace{gap:17px;grid-template-columns:minmax(0,1.3fr) minmax(280px,1fr)}.clip-controls{flex-wrap:wrap}.session-bar{gap:7px;padding:12px}.session-bar>div:first-child{gap:6px}}@media(max-width:900px){.workspace{grid-template-columns:1fr}.transcript-list{height:260px}.session-bar{flex-wrap:wrap}.steps{order:3;width:100%;justify-content:space-between}.steps small{display:inline}.video-shell{min-height:220px}}@media(max-width:600px){.sidebar{position:static;width:100%;padding:15px 18px;border-right:0;border-bottom:1px solid var(--line);display:block}.brand{font-size:20px}.logo{width:35px;height:35px;font-size:21px}.nav-label,.sidebar-bottom{display:none}nav{display:flex;gap:4px;margin-top:15px}.nav{padding:8px 9px;margin:0;gap:7px;font-size:12px}.nav span{font-size:11px}.nav b{font-size:9px}main{margin:0;padding:0 18px}header{height:54px}h1{font-size:23px}.page-heading{padding:25px 0 20px}.page-heading p{font-size:11px}.import-bar{gap:7px;padding-left:10px}.import-bar .button{padding:9px;font-size:11px}.import-bar .button span{display:none}.youtube-icon{display:none}.video-shell{min-height:200px}.empty-player h2{font-size:15px}.empty-player p{font-size:10px}.play-art{width:50px;height:50px;line-height:50px}.clip-controls{gap:7px}.clip-panel{padding:14px}.video-info a{white-space:normal}.speed{margin-left:0}footer span{display:none}}

.subtitle-actions{display:flex;gap:7px;align-items:center}.subtitle-actions select{font-size:10px;padding:4px}.transcript-panel>.panel-heading{flex-wrap:wrap;gap:8px}.video-shell>iframe{height:100%;width:100%}

.sentence-toolbar{display:flex;flex-wrap:wrap;gap:7px;padding:0 20px 12px}
.sentence-toolbar .button{padding:6px 9px;font-size:10px}
#sentence-position{flex-basis:100%;font-size:10px;color:var(--muted)}
.cue.selected-sentence{outline:2px solid #c1b7ed;outline-offset:-2px}