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p{max-width:600px;color:var(--muted);font-size:12px}.heatmap-count{color:var(--muted);font-size:12px}.heatmap-grid{grid-template-columns:repeat(auto-fill,minmax(52px,1fr));gap:6px;display:grid}.heatmap-cell{border:1px solid var(--line);background:var(--soft);min-height:52px;color:var(--muted);border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:3px;font-size:12px;display:flex}.heatmap-cell small{font-size:9px}.heatmap-cell.heatmap-learning{background:var(--learning);color:var(--ink)}.heatmap-cell.heatmap-mastered{background:var(--accent-soft);color:var(--accent)}.heatmap-sheet{z-index:20;background:var(--paper);border-left:1px solid var(--line);width:min(470px,100%);padding:32px;position:fixed;top:0;bottom:0;right:0;overflow-y:auto;box-shadow:-14px 0 40px #00000014}.heatmap-sheet .toolbar-heading{margin-bottom:20px}.heatmap-words{gap:7px;display:grid}.heatmap-words button{border:1px solid var(--line);text-align:left;background:0 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small{color:var(--muted);font-size:10px}.generation-fields{grid-template-columns:2fr 2fr repeat(3,1fr);gap:12px;display:grid}.generation-fields .field-label{margin-bottom:0}.generation-fields textarea{min-height:90px}.mode-tabs{gap:7px;margin:26px 0;padding-bottom:3px;display:flex;overflow-x:auto}.mode-tabs button,.settings-tabs button{border:1px solid var(--line);color:var(--muted);background:0 0;border-radius:8px;flex:none;padding:10px 13px;font-size:12px}.mode-tabs button.active,.settings-tabs button.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.source-quote{border-left:3px solid var(--accent);background:var(--soft);margin:15px 0 20px;padding:17px}.source-quote p{color:var(--muted);margin-bottom:0;font-size:13px}.expression-workspace{grid-template-columns:minmax(200px,250px) minmax(420px,1fr);min-height:calc(100vh - 66px);display:grid}.block-rail{border-right:1px solid var(--line);background:#fafaf7;padding:32px 18px}.block-rail button{text-align:left;width:100%;color:var(--muted);background:0 0;border:0;border-radius:8px;grid-template-columns:25px minmax(0,1fr) 18px;gap:7px;padding:12px 10px;display:grid}.block-rail button.current{background:var(--accent-soft);color:var(--ink)}.block-rail span:nth-child(2){-webkit-line-clamp:3;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.block-rail i{color:var(--accent);font-style:normal}.expression-card{width:min(820px,100%);margin:0 auto;padding:10vh 7vw 80px}.meaning-card,.reference-card{border:1px solid var(--line);background:var(--paper);border-radius:12px;padding:22px}.meaning-card h2{margin-bottom:13px}.meaning-card p{margin:0;font-size:18px}.reveal-button{border:0;border-bottom:1px solid var(--ink);background:0 0;margin:18px 0;padding:0;font-size:12px}.expression-reference{font-size:clamp(25px,3.2vw,40px)}.key-expression-list{flex-wrap:wrap;gap:9px;margin-top:23px;display:flex}.key-expression-list button{border:0;border-bottom:1px solid var(--accent);text-align:left;background:0 0;flex-direction:column;gap:5px;padding:8px 0;display:flex}.key-expression-list button.selected{color:var(--accent)}.key-expression-list small{color:var(--muted);font-size:11px}.expression-actions{gap:10px;margin:18px 0;display:flex}.saved-view{padding-top:68px}.saved-list{background:var(--paper);border:1px solid var(--line);border-radius:16px;overflow:hidden}.saved-row{border-bottom:1px solid var(--line);justify-content:space-between;gap:20px;padding:20px 24px;display:flex}.saved-row:last-child{border-bottom:0}.saved-row strong{font:500 18px Georgia,serif}.saved-row p{color:var(--muted);margin:6px 0;font-size:13px}.saved-row small{color:var(--muted);font-size:11px}.listening-workspace{grid-template-columns:minmax(320px,1fr) minmax(420px,.95fr);gap:0;min-height:calc(100vh - 66px);display:grid;position:relative}.video-area{color:#fff;background:#111310;padding:36px}.video-area video{background:#000;border-radius:8px;width:100%;max-height:58vh;display:block}.video-placeholder{color:#dfe7df;text-align:center;border:1px dashed #566056;border-radius:8px;flex-direction:column;justify-content:center;align-items:center;min-height:310px;padding:30px;display:flex}.video-placeholder p{color:#9da99d;max-width:360px;font-size:13px}.video-placeholder input,.subtitle-study input{display:none}.listening-controls{flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;display:flex}.listening-controls .secondary-button{color:#fff;border-color:#536256}.listening-controls .text-button{color:#bac6ba}.subtitle-study{background:var(--paper);padding:9vh 6vw 80px;position:relative}.subtitle-module{cursor:pointer;min-height:210px;padding:20px 0}.subtitle-aux{border-top:1px solid var(--line);margin-top:30px;padding-top:18px}.subtitle-aux>p{font-size:18px}.snippet-line{border-top:1px solid var(--line);color:var(--muted);white-space:pre-wrap;padding:12px 0;font-size:13px}.listening-drawer{z-index:21;background:var(--paper);border-left:1px solid var(--line);width:min(420px,100%);padding:28px 18px;position:fixed;top:0;bottom:0;right:0;overflow-y:auto;box-shadow:-14px 0 40px #0000001a}.listening-drawer .toolbar-heading{margin-bottom:12px}.drawer-search{width:100%;margin-bottom:10px}.listening-drawer>button{text-align:left;width:100%;color:var(--muted);background:0 0;border:0;border-radius:8px;grid-template-columns:28px minmax(0,1fr) 18px;gap:7px;padding:12px 10px;display:grid}.listening-drawer>button.current{background:var(--accent-soft);color:var(--ink)}.listening-drawer i{color:var(--accent);font-style:normal}.settings-tabs{flex-wrap:wrap;gap:8px;margin:-18px 0 28px;display:flex}.settings-card{max-width:780px}.settings-card h2{margin-bottom:20px}.settings-card>p{color:var(--muted)}.settings-card select{background:#fff;border:1px solid #d8d9d3;border-radius:8px;height:44px;padding:0 10px}.sync-status{border-top:1px solid var(--line);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;padding:18px 0;display:flex}.shortcut-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;padding:12px 0;font-size:13px;display:flex}.shortcut-row input{width:170px}.settings-card input[type=file]{display:none}[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--ink:#edede9;--muted:#a2a49c;--line:#343630;--soft:#171815;--paper:#1e201c;--accent:#9fbea9;--accent-soft:#29352d;--learning:#454127}[data-theme=dark] .sidebar,[data-theme=dark] .mobile-nav{background:#1e201ce0}[data-theme=dark] input,[data-theme=dark] textarea,[data-theme=dark] select{color:var(--ink);background:#171815}@media (max-width:980px){.reader-workspace{grid-template-columns:1fr}.sentence-rail{display:none}.word-panel{border:1px solid var(--line);z-index:4;border-radius:14px;max-height:42vh;display:none;position:fixed;bottom:20px;left:20px;right:20px;overflow:auto;box-shadow:0 12px 40px #0000001f}.word-panel.open{display:block}.reader-card{padding-left:9vw;padding-right:9vw}}@media (max-width:700px){.app-shell{padding-bottom:68px;display:block}.sidebar{display:none}.mobile-nav{z-index:10;height:68px;padding:5px 8px max(5px, env(safe-area-inset-bottom));border-top:1px solid var(--line);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#fffffff0;grid-template-columns:repeat(4,1fr);align-items:stretch;display:grid;position:fixed;bottom:0;left:0;right:0}.nav-item{min-height:54px}.page{width:min(100% - 32px,1120px);padding-top:38px}h1{font-size:39px}.continue-panel{flex-direction:column;align-items:stretch;margin-top:42px;padding:26px}.home-grid,.import-grid,.module-grid,.home-actions,.continue-list{grid-template-columns:1fr}.continue-list>div{grid-template-columns:95px minmax(0,1fr)}.continue-list 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.toolbar-heading{flex-direction:column;align-items:stretch}.settings-tabs{flex-wrap:nowrap;overflow-x:auto}.shortcut-row{flex-direction:column;align-items:start;gap:7px}.prompt-settings{grid-template-columns:1fr}.rule-list{display:flex;overflow-x:auto}.rule-list button{flex:0 0 190px}.rule-editor{padding:20px}.toolbar-heading{align-items:start}.toolbar-heading .primary-button{flex:none}.preview-row{grid-template-columns:20px minmax(0,1fr)}.preview-row>div{flex-direction:row;grid-column:2}.learning-header{grid-template-columns:70px 1fr 50px;padding:0 12px}.learning-header .text-button{font-size:0}.learning-header .text-button:after{content:"←";font-size:20px}.reader-card{padding:8vh 24px 95px}.reading-text{font-size:clamp(29px,8.5vw,39px);line-height:1.6}.reader-actions{gap:10px}.reader-actions button{padding:0 12px}.chatgpt-return{grid-template-columns:1fr}.lesson-complete{flex-wrap:wrap;align-items:start}}@media (prefers-color-scheme:dark){:root{--ink:#edede9;--muted:#a2a49c;--line:#343630;--soft:#171815;--paper:#1e201c;--accent:#9fbea9;--accent-soft:#29352d;--learning:#454127}.sidebar,.mobile-nav{background:#1e201ce0}input,textarea{background:#171815}.sentence-rail,.word-panel{background:#1a1c18}.primary-button,.file-button{color:#20211f;background:#edede9}.secondary-button:hover,.file-button:hover{background:#252821}.progress-ring:before{background:var(--paper)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}