@layer theme{:root,:host{--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.fixed{position:fixed}.\!block{display:block!important}.block{display:block}.hidden{display:none}}:root{--ink:#202c35;--muted:#788590;--line:#e7ecef;--bg:#f5f7f7;--green:#16745f;--green-dark:#105e4d;--pale:#e9f5f1;--coral:#bb544b;--font-body:"DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;--font-head:"Manrope", "DM Sans", sans-serif}*{box-sizing:border-box}html,body{min-height:100%;margin:0}body{background:var(--bg);color:var(--ink);font:15px/1.5 var(--font-body)}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.43}a{color:inherit;text-decoration:none}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:var(--font-head);letter-spacing:-.035em}h1{margin-bottom:11px;font-size:34px;line-height:1.15}h2{margin-bottom:12px;font-size:25px;line-height:1.25}h3{font-size:18px}p{color:var(--muted)}.home-shell{flex-direction:column;max-width:1120px;min-height:100vh;margin:auto;padding:34px 36px;display:flex}.brand{font:700 18px var(--font-head);letter-spacing:-.03em;align-items:center;gap:10px;display:flex}.brand-icon{background:var(--green);color:#fff;border-radius:12px;place-items:center;width:37px;height:37px;display:grid}.home-card{border:1px solid var(--line);background:#fff;border-radius:25px;width:min(100%,700px);margin:auto;padding:72px 78px;box-shadow:0 22px 70px #203b3510}.eyebrow{letter-spacing:.13em;color:var(--green);margin-bottom:13px;font-size:10px;font-weight:700}.home-card h1{margin-bottom:16px;font-size:48px}.home-card>p{max-width:470px;margin-bottom:33px;font-size:17px}.home-actions{gap:12px;display:flex}.button{border:0;border-radius:11px;justify-content:center;align-items:center;gap:9px;padding:11px 17px;font-weight:600;transition:transform .16s,background .16s,border-color .16s;display:inline-flex}.button:hover{transform:translateY(-1px)}.button.primary{background:var(--green);color:#fff}.button.primary:hover{background:var(--green-dark)}.button.secondary{color:var(--ink);border:1px solid var(--line);background:#fff}.button.secondary:hover{background:#fbfcfc;border-color:#bdc9c9}.button.ghost{color:#52616b;background:0 0}.button.danger{color:#ad493f;background:#f9e9e7}.button.large{min-width:175px;padding:15px 20px}.button.small{border-radius:9px;padding:8px 11px;font-size:13px}.button.full{width:100%;margin-top:5px}.home-note{color:#909ba2;margin-top:25px;font-size:12px}.home-note b{color:#5d6c73}footer{color:#9aa4a9;text-align:center;padding-bottom:8px;font-size:12px}.app-shell{min-height:100vh}.topbar{background:#ffffffb8;border-bottom:1px solid #e9eeee;justify-content:space-between;align-items:center;height:68px;padding:0 max(30px,50vw - 560px);display:flex}.brand.compact{font-size:16px}.brand.compact .brand-icon{border-radius:10px;width:32px;height:32px}.topbar-tag{color:#87939a;font-size:12px}.auth-card{border:1px solid var(--line);background:#fff;border-radius:19px;width:min(100% - 36px,450px);margin:66px auto;padding:35px 38px;box-shadow:0 14px 50px #203b350b}.backlink{color:#73808a;background:0 0;border:0;align-items:center;gap:7px;margin-bottom:30px;padding:0;font-size:13px;display:inline-flex}.auth-card .eyebrow{margin-bottom:8px}.auth-card h1{font-size:29px}.muted{color:var(--muted)}.form-stack{flex-direction:column;gap:16px;margin-top:24px;display:flex}.form-stack label,.editor-field{color:#475761;flex-direction:column;gap:7px;font-size:13px;font-weight:600;display:flex}.form-stack input,.editor-field input,.editor-field textarea,.editor-field select,.student-answer,.matching-list select{width:100%;color:var(--ink);background:#fff;border:1px solid #dfe6e8;border-radius:9px;outline:0;padding:11px 12px;transition:border .15s,box-shadow .15s}.form-stack input:focus,.editor-field input:focus,.editor-field textarea:focus,.editor-field select:focus,.student-answer:focus{border-color:#65a998;box-shadow:0 0 0 3px #16745f16}.auth-switch{border-top:1px solid var(--line);text-align:center;color:var(--muted);margin-top:23px;padding-top:19px;font-size:13px}.auth-switch button{color:var(--green);background:0 0;border:0;font-weight:700}.error-box{color:#a54339;background:#fff3f1;border:1px solid #f0cfcb;border-radius:9px;padding:10px 12px;font-size:13px}.success-box{color:#286b43;background:#effaf2;border:1px solid #b9dfc8;border-radius:9px;padding:10px 12px;font-size:13px}.loading{text-align:center;color:var(--muted);margin:100px auto}.dashboard{max-width:1080px;margin:49px auto;padding:0 28px 60px}.dashboard-head{justify-content:space-between;align-items:flex-start;margin-bottom:30px;display:flex}.dashboard-head h1{margin-bottom:6px;font-size:32px}.icon-button{border:1px solid var(--line);color:#64727a;background:#fff;border-radius:10px;place-items:center;width:37px;height:37px;display:grid}.icon-button:hover{background:#f8f9f9}.icon-button.danger{color:#a04c46}.start-card{text-align:left;width:100%;color:var(--ink);background:#eef7f4;border:1px solid #cce3dc;border-radius:15px;align-items:center;gap:17px;margin-bottom:43px;padding:19px 23px;transition:background .16s,transform .16s;display:flex}.start-card:hover{background:#e4f2ed;transform:translateY(-1px)}.start-icon{background:var(--green);color:#fff;border-radius:14px;place-items:center;width:46px;height:46px;display:grid}.start-card b{font:700 16px var(--font-head);margin-bottom:3px;display:block}.start-card small{color:#75837f}.start-arrow{color:var(--green);margin-left:auto}.section-head{justify-content:space-between;align-items:center;margin-bottom:18px;display:flex}.section-head .eyebrow{margin-bottom:5px}.section-head h2{margin:0;font-size:23px}.count{font:600 13px var(--font-body);letter-spacing:0;color:#819098;vertical-align:3px;background:#eef1f2;border-radius:30px;padding:3px 8px}.empty-card{text-align:center;background:#fff;border:1px dashed #d9e1e2;border-radius:16px;padding:54px 20px}.empty-icon{background:var(--pale);width:46px;height:46px;color:var(--green);border-radius:15px;place-items:center;margin:0 auto 16px;display:grid}.empty-card h3{margin-bottom:7px}.empty-card p{margin-bottom:20px}.empty-card.centered{width:min(92vw,540px);margin:15vh auto;padding:50px 28px}.empty-card.centered h1{font-size:28px}.lesson-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;display:grid}.lesson-card{border:1px solid var(--line);background:#fff;border-radius:15px;flex-direction:column;min-height:195px;padding:18px;display:flex}.lesson-card-top{justify-content:space-between;align-items:center;display:flex}.lesson-symbol{width:36px;height:36px;color:var(--green);background:#eff5f3;border-radius:11px;place-items:center;display:grid}.more-button{color:#87939a;letter-spacing:2px;background:0 0;border:0;border-radius:8px;font-size:20px}.more-button:hover{background:#f2f5f5}.lesson-card h3{margin:13px 0 3px;font-size:17px}.lesson-card p{margin-bottom:17px;font-size:12px}.lesson-card-actions{justify-content:space-between;align-items:center;margin-top:auto;display:flex}.lesson-card-actions .button{font-size:12px}.editor-page{max-width:900px;margin:25px auto 70px;padding:0 25px}.editor-toolbar{justify-content:space-between;align-items:center;display:flex}.editor-toolbar .backlink{margin:0}.toolbar-actions{gap:8px;display:flex}.toolbar-actions .button{padding:9px 14px}.editor-title{padding:38px 0 26px}.editor-title input{font:800 34px/1.2 var(--font-head);letter-spacing:-.04em;width:100%;color:var(--ink);background:0 0;border:0;outline:0}.editor-title input::placeholder{color:#aeb8ba}.save-status{color:#81908f;min-height:18px;margin-top:8px;font-size:12px}.blocks-list{flex-direction:column;gap:13px;display:flex}.block-editor{border:1px solid var(--line);background:#fff;border-radius:14px;padding:16px 18px}.block-label{color:#7c888e;align-items:center;gap:9px;margin-bottom:14px;font-size:12px;font-weight:700;display:flex}.drag-handle{color:#b3bdbf;font-size:18px}.block-tools{gap:5px;margin-left:auto;display:flex}.block-tools button,.move-tools button{color:#728089;background:0 0;border:0;border-radius:7px;padding:5px 7px}.block-tools button:hover,.move-tools button:hover{background:#f1f4f4}.fields-row{gap:14px;display:flex}.fields-row>*{flex:1}.editor-field textarea{resize:vertical}.move-tools{justify-content:flex-end;gap:4px;margin-top:8px;display:flex}.move-tools button{font-size:11px}.add-block{background:#fbfcfc;border:1px dashed #d3dcdd;border-radius:14px;margin-top:18px;padding:19px}.add-block>span{margin-bottom:14px;font-size:13px;font-weight:700;display:block}.block-type-grid{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.block-type-grid button{text-align:left;border:1px solid var(--line);color:#54646c;background:#fff;border-radius:9px;align-items:center;gap:6px;padding:9px 10px;font-size:12px;display:flex}.block-type-grid button:hover{color:var(--green);border-color:#93c1b4}.divider-sample{background:var(--line);height:1px;margin:15px 0}.preview-card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:34px}.preview-block{border-bottom:1px solid #f0f2f2;padding:18px 0}.preview-block:last-child{border:0}.prejoin-card{border:1px solid var(--line);background:#fff;border-radius:19px;width:min(100% - 36px,560px);margin:48px auto;padding:34px}.prejoin-card h1{font-size:30px}.device-preview{border:1px solid var(--line);border-radius:13px;overflow:hidden}.preview-placeholder{color:#dbe3e4;background:#202b31;flex-direction:column;justify-content:center;align-items:center;gap:10px;height:170px;font-size:12px;display:flex}.avatar{color:#226955;width:43px;height:43px;font:700 18px var(--font-head);background:#cee7df;border-radius:50%;place-items:center;display:grid}.device-toggles{gap:8px;padding:10px;display:flex}.round-control{border:1px solid var(--line);color:#627179;background:#fff;border-radius:8px;padding:8px 10px;font-size:11px}.round-control.off{color:#ae5147;background:#fff1ef}.classroom{background:#f1f4f3;flex-direction:column;height:100vh;min-height:560px;display:flex;overflow:hidden}.class-header{border-bottom:1px solid var(--line);background:#fff;flex:0 0 60px;align-items:center;gap:20px;height:60px;padding:0 20px;display:flex}.class-header .brand{flex:none}.class-title{white-space:nowrap;color:#4c5d65;align-items:center;gap:8px;font-size:13px;display:flex}.live-dot{background:#43a789;border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 3px #e6f4ef}.current-lesson{color:var(--green);font-weight:700}.class-actions{align-items:center;gap:7px;margin-left:auto;display:flex}.class-layout{flex:1;grid-template-columns:minmax(0,1fr) 280px;gap:15px;min-height:0;padding:15px 18px 82px;display:grid}.lesson-stage{border:1px solid var(--line);background:#fff;border-radius:15px;flex-direction:column;min-height:0;display:flex;overflow:auto}.stage-meta{color:#94a0a3;letter-spacing:.09em;border-bottom:1px solid #edf0f0;flex:none;justify-content:space-between;align-items:center;height:46px;padding:0 20px;font-size:10px;font-weight:700;display:flex}.stage-meta span+span{letter-spacing:0;color:#718087;font-size:12px;font-weight:600}.stage-card{flex-direction:column;flex:1;justify-content:center;min-height:0;padding:clamp(22px,5vw,68px);display:flex;position:relative}.stage-nav{color:#79868b;border-top:1px solid #edf0f0;flex:none;justify-content:space-between;align-items:center;height:61px;padding:0 18px;font-size:12px;display:flex}.director-banner{color:#80531b;text-align:center;background:#fff5e6;padding:8px 18px;font-size:12px}.annotation-tools{gap:4px;margin-left:auto;display:flex}.annotation-tools button{color:#52636a;cursor:pointer;background:#fff;border:1px solid #e0e7e6;border-radius:7px;align-items:center;gap:4px;min-height:28px;padding:3px 7px;display:inline-flex}.annotation-tools button.selected{color:#1b8067;background:#e8f5f0;border-color:#1b8067}.annotation-layer{z-index:8;pointer-events:none;position:absolute;inset:0}.annotation-layer svg{width:100%;height:100%;display:block}.annotation-layer.annotation-active{pointer-events:auto;cursor:crosshair;touch-action:none}.annotation-layer.annotation-drawing{cursor:cell}.laser-pointer{background:#f0544f;border:3px solid #fff;border-radius:50%;width:18px;height:18px;position:absolute;transform:translate(-50%,-50%);box-shadow:0 0 0 2px #f0544f,0 2px 8px #0004}.student-nav-note{margin:auto}.material-empty{text-align:center;max-width:420px;margin:auto;padding:30px}.material-empty .empty-icon{margin-bottom:20px}.material-empty h2{font-size:23px}.material-empty p{margin-bottom:20px;font-size:13px}.video-sidebar{flex-direction:column;gap:11px;min-height:0;display:flex;overflow:auto}.participant-card{color:#fff;background:#263238;border-radius:12px;min-height:145px;position:relative;overflow:hidden}.participant-label{z-index:3;color:#e1e8e8;letter-spacing:.1em;font-size:9px;font-weight:700;position:absolute;top:10px;left:11px}.connected-mark{letter-spacing:0;color:#8ed3b7;margin-left:7px}.participant-name{color:#e1e9e9;z-index:3;font-size:11px;position:absolute;bottom:8px;left:10px}.remote-placeholder{color:#cbd6d8;background:#27353a;flex-direction:column;justify-content:center;align-items:center;gap:7px;display:flex;position:absolute;inset:0}.remote-placeholder .avatar{width:42px;height:42px}.remote-placeholder small{font-size:10px}.student-video-card{min-height:140px}.waiting-hint{background:#f8fbfa;border:1px solid #dfe8e4;border-radius:11px;padding:12px 13px}.waiting-hint b,.waiting-hint small{display:block}.waiting-hint b{font-size:12px}.waiting-hint small{color:#7e8c8c;margin:4px 0 9px;font-size:11px}.waiting-hint button{color:var(--green);background:0 0;border:0;align-items:center;gap:6px;padding:0;font-size:11px;font-weight:700;display:flex}.lk-video-grid,.lk-track{position:absolute;inset:0}.lk-track video{object-fit:cover;width:100%;height:100%}.lk-track:nth-child(n+2){display:none}.lk-hidden-mount{width:1px;height:1px;position:fixed;top:0;left:-10000px;overflow:hidden}.call-controls{z-index:10;background:#27343a;border:1px solid #435158;border-radius:14px;padding:3px;position:fixed;bottom:8px;left:50%;transform:translate(-50%);box-shadow:0 5px 22px #11242b38}.call-controls .lk-button{color:#fff}.call-controls button{color:#fff!important}.call-controls [data-lk-theme]{--lk-bg:#27343a}.lesson-heading{color:#213139;margin:0}.lesson-heading.h1{font-size:38px}.lesson-heading.h2{font-size:31px}.lesson-heading.h3{font-size:24px}.lesson-text{color:#35464c;font-size:17px;line-height:1.8}.lesson-text p{color:inherit;margin:0 0 8px}.lesson-image{margin:0}.image-slide-surface{width:fit-content;max-width:100%;margin-inline:auto;position:relative}.lesson-image img{object-fit:contain;border-radius:10px;width:auto;max-width:100%;height:auto;max-height:58vh;display:block}.image-answer-pin{z-index:3;position:absolute;transform:translate(-50%,-50%)}.image-answer-pin .inline-answer{background:#ffffffed;min-width:88px;max-width:160px;padding:6px 9px;box-shadow:0 2px 8px #172c3226}.image-answer-key{color:#206b52;white-space:nowrap;background:#e6f5ed;border-radius:6px;padding:5px 9px;font-size:12px;font-weight:700;display:block;box-shadow:0 2px 8px #172c3226}.image-editor-fields{gap:10px;display:grid}.image-overlay-help,.field-hint{color:#74848a;margin:5px 0 8px;font-size:12px;font-weight:400;display:block}.image-edit-surface{cursor:crosshair;width:fit-content;max-width:100%;position:relative}.image-edit-surface img{object-fit:contain;border-radius:8px;width:auto;max-width:100%;height:auto;max-height:50vh;display:block}.image-field-pin{color:#fff;cursor:pointer;background:#1b8067;border:2px solid #fff;border-radius:50%;place-items:center;width:24px;height:24px;display:grid;position:absolute;transform:translate(-50%,-50%);box-shadow:0 1px 6px #172c3255}.image-field-row{border:1px solid #e3e9e8;border-radius:10px;grid-template-columns:auto minmax(120px,1fr) minmax(120px,1fr) auto;align-items:end;gap:10px;padding:10px;font-size:12px;display:grid}.image-field-row label{color:#69797e;gap:5px;display:grid}.text-gap-input{vertical-align:baseline;width:120px;margin:0 3px;display:inline-block}.text-gap-answer{color:#17664e;background:#e7f4ed;border-radius:4px;padding:1px 5px}.lesson-audio,.synchronized-audio audio{width:min(100%,640px);margin:0 auto;display:block}.synchronized-audio{justify-items:center;gap:10px;display:grid}.sync-play-button{margin-top:10px}.lesson-image figcaption{color:#78868b;font-size:12px}.media-placeholder{text-align:center;color:#91a0a2;background:#f4f7f7;border:1px dashed #d6dfdf;border-radius:10px;padding:42px}.video-embed{aspect-ratio:16/9;width:100%;position:relative}.video-embed iframe{border:0;border-radius:10px;width:100%;height:100%;position:absolute;inset:0}.video-link{color:var(--green);font-weight:700}.lesson-divider{border:0;border-top:1px solid #dfe6e6;width:100%}.exercise{width:100%;max-width:740px;margin:auto}.exercise-kicker{letter-spacing:.12em;color:#81918f;font-size:10px;font-weight:700}.exercise h2{margin:8px 0 20px;font-size:27px}.option-list{flex-direction:column;gap:8px;display:flex}.answer-option{text-align:left;color:#394a51;background:#fff;border:1px solid #e2e8e8;border-radius:10px;align-items:center;gap:12px;width:100%;padding:13px 15px;transition:all .12s;display:flex}.answer-option:hover:not(:disabled){background:#fbfdfc;border-color:#9cc9bd}.answer-option.selected{color:#145f4d;background:#eff8f5;border-color:#62a895}.option-marker{width:20px;height:20px;color:var(--green);border:1px solid #cbd5d6;border-radius:50%;place-items:center;font-size:11px;display:grid}.answer-option.selected .option-marker{border-color:var(--green)}.student-answer{resize:vertical;min-height:115px}.submit-answer{margin-top:17px}.answer-state{color:#55646a;background:#f2f5f5;border-radius:9px;margin-top:16px;padding:12px 14px;font-size:13px;font-weight:600}.answer-state.correct{color:#1c7954;background:#e8f6ef}.answer-state.incorrect{color:#aa4c43;background:#fff0ee}.teacher-answer{background:#fafcfc;border:1px solid #e4eaea;border-radius:11px;margin-top:19px;padding:14px}.teacher-answer p{color:#26383f;margin:4px 0 2px;font-weight:600}.teacher-answer small{color:#7d898d;font-size:11px}.verdict-actions{gap:8px;margin-top:12px;display:flex}.correct-button{color:#1c7954;background:#e6f5ed}.incorrect-button{color:#ad4d44;background:#fff0ee}.blank-prompt{font:500 20px/2 var(--font-head);margin:16px 0}.inline-answer{text-align:center;width:130px;font:inherit;color:var(--green);background:#f6faf8;border:0;border-bottom:2px solid #8bb8ac;outline:0}.matching-list{flex-direction:column;gap:9px;display:flex}.matching-list label{border:1px solid var(--line);border-radius:9px;grid-template-columns:1fr auto 1fr;align-items:center;gap:13px;padding:10px;display:grid}.matching-list label>span{color:#97a3a5}.order-list{flex-direction:column;gap:8px;display:flex}.order-item{border:1px solid var(--line);border-radius:9px;align-items:center;gap:12px;padding:10px 12px;display:flex}.order-item>span{width:24px;height:24px;color:var(--green);background:#edf5f2;border-radius:8px;place-items:center;font-size:12px;display:grid}.order-item div{gap:4px;margin-left:auto;display:flex}.order-item button{color:#52636a;background:#f2f5f5;border:0;border-radius:5px}.modal-backdrop{z-index:20;background:#1b2b2f7a;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.lesson-picker{background:#fff;border-radius:17px;width:min(100%,500px);max-height:80vh;padding:23px;overflow:auto;box-shadow:0 18px 70px #14212744}.picker-head{justify-content:space-between;align-items:flex-start;margin-bottom:14px;display:flex}.picker-head .eyebrow{margin-bottom:4px}.picker-head h2{margin:0;font-size:22px}.picker-item{text-align:left;width:100%;color:var(--ink);background:#fff;border:0;border-top:1px solid #edf0f0;align-items:center;gap:12px;padding:11px 8px;display:flex}.picker-item:hover{background:#f8fbfa}.picker-item>span:nth-child(2){flex:1}.picker-item b,.picker-item small{display:block}.picker-item b{font-size:13px}.picker-item small{color:#879398;font-size:11px}.picker-empty{color:var(--muted);padding:22px 4px;font-size:13px}.picker-empty a{color:var(--green);margin-top:8px;font-weight:700;display:block}.toast-error{z-index:30;color:#9e4037;cursor:pointer;background:#fff3f1;border:1px solid #edcfca;border-radius:10px;align-items:center;gap:12px;max-width:min(420px,90vw);padding:12px 15px;font-size:12px;display:flex;position:fixed;bottom:76px;right:18px;box-shadow:0 7px 30px #27353a20}@media (max-width:900px){.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.class-layout{grid-template-columns:minmax(0,1fr) 225px;gap:9px;padding:10px 10px 80px}.class-header{gap:11px;padding:0 12px}.class-title{font-size:12px}.class-actions{gap:4px}.class-actions .button{padding:7px 8px;font-size:11px}.copy-action{display:none}}@media (max-width:650px){.image-field-row{grid-template-columns:1fr auto}.image-field-row b{grid-column:1/-1}.image-field-row label{grid-column:1/2}.image-field-row .icon-button{grid-area:2/2/span 2}.annotation-tools button{min-width:30px;padding:3px 5px}.home-shell{padding:22px 18px}.home-card{border-radius:20px;padding:42px 25px}.home-card h1{font-size:37px}.home-actions{flex-direction:column}.home-actions .button{width:100%}.topbar{padding:0 17px}.topbar-tag{display:none}.auth-card,.prejoin-card{margin-top:32px;padding:27px 22px}.dashboard{margin:32px auto;padding:0 17px 45px}.dashboard-head h1{font-size:26px}.section-head{align-items:flex-end;gap:9px}.section-head h2{font-size:19px}.section-head .button{padding:9px 10px;font-size:12px}.lesson-grid{grid-template-columns:1fr}.lesson-card{min-height:170px}.editor-page{margin-top:18px;padding:0 14px}.editor-title{padding:28px 0 20px}.editor-title input{font-size:28px}.block-type-grid{grid-template-columns:repeat(2,1fr)}.fields-row{flex-direction:column}.classroom{height:100dvh;min-height:620px}.class-header{flex-wrap:wrap;flex-basis:auto;gap:5px 10px;height:auto;min-height:54px;padding:8px 11px}.class-header .brand{font-size:14px}.class-header .brand-icon{width:27px;height:27px}.class-title{flex:1;justify-content:flex-end;font-size:10px}.class-actions{justify-content:flex-end;width:100%;margin:0}.class-actions .button{padding:6px 8px;font-size:10px}.class-layout{flex-direction:column-reverse;gap:8px;padding:8px 8px 74px;display:flex}.video-sidebar{flex-direction:row;flex:0 0 105px;overflow:visible}.participant-card{flex:1;min-height:105px}.student-video-card{min-height:105px}.waiting-hint{display:none}.participant-label{font-size:8px;top:7px;left:7px}.remote-placeholder .avatar{width:32px;height:32px}.participant-name{font-size:9px}.lesson-stage{flex:1;min-height:0}.stage-meta{height:36px;padding:0 11px;font-size:8px}.stage-meta span+span{font-size:10px}.stage-card{padding:18px 16px;overflow:auto}.stage-nav{height:50px;padding:0 10px}.stage-nav .button{padding:8px 10px;font-size:11px}.lesson-heading.h1{font-size:30px}.lesson-heading.h2{font-size:26px}.exercise h2{font-size:21px}.answer-option{padding:11px;font-size:13px}.matching-list label{gap:7px;padding:7px;font-size:12px}.call-controls{bottom:5px}.call-controls button{padding:8px!important}.teacher-answer{font-size:12px}.verdict-actions{flex-wrap:wrap}.verdict-actions .button{padding:8px;font-size:11px}.home-note{font-size:11px}}.device-preview .preview-placeholder{padding:12px;position:relative}.device-preview .preview-placeholder video{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.preview-error{z-index:2;text-align:center;color:#fff;background:#4d2521dd;border-radius:7px;padding:6px 8px;font-size:11px;position:absolute;bottom:8px;left:8px;right:8px}.device-selectors{grid-template-columns:1fr 1fr;gap:9px;padding:10px 10px 0;display:grid}.device-selectors label{color:#718087;flex-direction:column;gap:5px;font-size:10px;font-weight:700;display:flex}.device-selectors select{border:1px solid var(--line);color:#45555c;background:#fff;border-radius:7px;max-width:100%;padding:7px;font-size:11px}.device-selectors select:disabled{opacity:.5}.rich-toolbar{gap:5px;margin:0 0 8px;display:flex}.rich-toolbar button{border:1px solid var(--line);color:#526269;background:#fff;border-radius:7px;padding:5px 9px;font-size:12px}.rich-toolbar button:hover{color:var(--green);background:#f4f8f6}.lesson-text h1,.lesson-text h2,.lesson-text h3{margin:12px 0 6px}.lesson-text ul,.lesson-text ol{padding-left:24px}.lesson-text a{color:var(--green);text-decoration:underline}.suggestion{margin-top:4px;display:block;color:#6e837b!important}.live-dot.not-live{background:#d3a14c;box-shadow:0 0 0 3px #faf1dc}.drag-handle{cursor:grab}.drag-handle:active{cursor:grabbing}.block-editor.dragging{opacity:.55;border-color:#70aa99}.connection-status{color:#75847f;align-items:center;gap:6px;font-size:10px;display:inline-flex}.connection-status .live-dot{flex:0 0 8px;display:inline-block}.fullscreen-button{z-index:5;color:#fff;opacity:.8;background:#19282b99;border:1px solid #ffffff35;border-radius:7px;place-items:center;width:26px;height:26px;display:grid;position:absolute;top:7px;right:7px}.fullscreen-button:hover{opacity:1;background:#19282bdd}.participant-card:fullscreen{background:#17252a;border-radius:0;width:100vw;height:100vh}.participant-card:fullscreen .lk-video-grid video{object-fit:contain}