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var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fffef8eb;padding:12px 16px;position:sticky;bottom:0}.student-lang-toggle,.student-langs button{border:1px solid var(--line);min-height:46px;color:var(--ink);background:#fff;border-radius:12px;padding:0 16px;font-size:14px;font-weight:700}.student-lang-toggle{width:100%}.student-langs{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:8px;display:grid}.student-langs button.active{border-color:var(--ink);background:var(--ink);color:var(--highlight)}.student-page>.student-tabs{padding:8px 10px calc(8px + env(safe-area-inset-bottom));border-top:1px solid var(--line);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffef8f0;grid-template-columns:1fr 1fr;gap:6px;margin-top:auto;display:grid;position:sticky;bottom:0}.student-tabs button{color:#0d182473;background:0 0;border:0;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:3px;min-height:52px;font-size:11px;font-weight:700;transition:color .15s,background .15s;display:flex}.student-tabs button.active{background:var(--ink);color:var(--highlight)}.student-tab-icon{width:21px;height:21px;display:block}.student-tab-icon svg{width:100%;height:100%}.student-head{border-bottom:1px solid var(--line);align-items:center;gap:10px;padding:12px 16px;display:flex}.student-head .brand-mark{border-radius:9px;flex:none;width:30px;height:30px;font-size:15px}.student-head-name{letter-spacing:-.01em;flex-direction:column;font-size:13px;font-weight:900;line-height:1.25;display:flex}.student-head-name em{letter-spacing:.02em;color:#0d182480;font-size:10px;font-style:normal;font-weight:700;font-family:var(--font-space-mono)}.student-bar-right{align-items:center;gap:8px;display:flex}.student-brand code{font:800 13px/1 var(--font-space-mono);letter-spacing:.12em}.student-leave{border:1px solid var(--line);color:#0d182499;background:#fff;border-radius:8px;padding:5px 9px;font-size:10px;font-weight:700}.student-lang-select{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:8px;padding:7px 9px;font-size:12px;font-weight:700}.join-entry{flex-direction:column;flex:1;gap:14px;padding:16px;display:flex}.qr-scanner{background:#000;border-radius:14px;position:relative;overflow:hidden}.qr-scanner video{aspect-ratio:1;object-fit:cover;width:100%;display:block}.qr-frame{border:2px solid #ffffffd9;border-radius:12px;position:absolute;inset:18%}.qr-scanner p{color:#ffffffbf;text-align:center;margin:0;padding:10px 12px;font-size:12px}.join-entry-error{color:var(--live);margin:0;font-size:12px;line-height:1.5}.join-entry-manual{gap:8px;display:grid}.join-entry-manual span{color:#0d18248c;font-size:11px;font-weight:700}.join-entry-manual input{border:1px solid var(--line);min-height:48px;color:var(--ink);font:800 18px/1 var(--font-space-mono);letter-spacing:.16em;background:#fff;border-radius:12px;padding:0 14px}.join-entry-manual button,.translate-run{background:var(--ink);min-height:50px;color:var(--highlight);border:0;border-radius:12px;font-size:15px;font-weight:800}.translate-run:disabled{color:#0d182466;background:#0d18241f}.translate-body{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex}.translate-field{gap:7px;display:grid}.translate-field>span{color:#0d18248c;font-size:11px;font-weight:700}.translate-field textarea{border:1px solid var(--line);color:var(--ink);resize:vertical;background:#fff;border-radius:12px;padding:12px 14px;font-size:16px;line-height:1.55}.translate-remaining{color:#0d182473;text-align:right;font-size:11px;font-style:normal}.translate-error{color:var(--live);margin:0;font-size:13px;line-height:1.5}.translate-result{border:1px solid var(--line);background:var(--ink);color:#fff;border-radius:14px;gap:8px;padding:16px;display:grid}.translate-result>span{color:var(--highlight);font-size:11px;font-weight:700;font-family:var(--font-space-mono);letter-spacing:.06em}.translate-result p{overflow-wrap:anywhere;margin:0;font-size:19px;line-height:1.55}.translate-result button{color:#fff;background:0 0;border:1px solid #ffffff40;border-radius:8px;justify-self:start;padding:7px 12px;font-size:12px;font-weight:700}.preset-row{gap:6px;display:grid}.preset-chip{border:1px solid var(--line);background:var(--panel);min-height:42px;color:var(--ink);text-align:left;border-radius:10px;padding:0 14px;font-size:12.5px;font-weight:700}.preset-chip.active{border-color:var(--ink);background:var(--ink);color:var(--panel)}.toggle-list{gap:6px;margin-top:12px;display:grid}.toggle-detail{border:1px solid var(--line);background:var(--panel);text-align:left;border-radius:10px;gap:4px;padding:10px 12px;display:grid}.toggle-detail-head{justify-content:space-between;align-items:center;gap:8px;display:flex}.toggle-detail-head b{color:var(--ink);font-size:12px}.toggle-detail-head em{color:#0d182480;background:#0d182414;border-radius:99px;padding:2px 7px;font-size:10px;font-style:normal;font-weight:700}.toggle-detail.active .toggle-detail-head em{background:var(--ink);color:var(--panel)}.toggle-detail-hint{color:#0d182480;font-size:10.5px;line-height:1.45}.picker-screen{justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.picker-card{border:1px solid var(--line);background:#fffef8f5;border-radius:24px;flex-direction:column;gap:18px;width:min(720px,100%);padding:28px;display:flex;box-shadow:0 18px 60px #0d18241a}.picker-head{align-items:flex-start;gap:14px;display:flex}.picker-title{letter-spacing:-.02em;font-size:22px;font-weight:900}.picker-hint{color:#0d182499;margin-top:6px;font-size:12px;line-height:1.6}.picker-empty{text-align:center;color:#0d18248c;padding:28px 0;font-size:13px}.picker-list{flex-direction:column;gap:8px;max-height:min(52vh,460px);list-style:none;display:flex;overflow-y:auto}.picker-row{border:1px solid var(--line);background:#fff;border-radius:16px;overflow:hidden}.picker-row:hover{border-color:var(--ink)}.picker-row.recent{border-color:#0d182473}.picker-item{text-align:left;cursor:pointer;background:0 0;border:0;justify-content:space-between;align-items:center;gap:16px;width:100%;padding:15px 16px;display:flex}.picker-material-toggle{border:0;border-top:1px solid var(--line);color:#0d182499;letter-spacing:-.01em;text-align:left;cursor:pointer;background:#0d182405;align-items:center;gap:6px;width:100%;padding:9px 16px;font-size:11px;font-weight:800;transition:background .15s,color .15s;display:flex}.picker-material-toggle:hover{color:var(--ink);background:#0d18240d}.picker-material-toggle:before{content:"";opacity:.4;background:currentColor;border-radius:99px;width:5px;height:5px}.picker-material{border-top:1px solid var(--line);background:#0d182405;padding:14px 16px 16px}.picker-item-main{flex-direction:column;gap:4px;min-width:0;display:flex}.picker-item-head{align-items:center;gap:7px;min-width:0;display:flex}.picker-item-head b{letter-spacing:-.01em;text-overflow:ellipsis;white-space:nowrap;font-size:15px;font-weight:800;overflow:hidden}.picker-item-main em{color:#0d18248c;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-style:normal;line-height:1.5;overflow:hidden}.picker-meta{color:#0d182480;flex-wrap:wrap;align-items:center;gap:7px;font-size:11px;font-weight:700;display:flex}.picker-meta .muted{color:#0d18244d}.picker-dot{opacity:.35;background:currentColor;border-radius:99px;width:3px;height:3px}.picker-langs{align-items:center;gap:5px;display:inline-flex}.picker-langs i{opacity:.45;font-style:normal}.picker-go{letter-spacing:-.01em;color:#0d18244d;flex:none;font-size:11px;font-weight:800;transition:color .15s,transform .15s}.picker-item:hover .picker-go{color:var(--ink);transform:translate(2px)}.picker-item-tags{flex-wrap:wrap;flex-shrink:0;justify-content:flex-end;gap:5px;display:flex}.picker-tag{letter-spacing:.04em;white-space:nowrap;background:#0d18240f;border-radius:99px;padding:3px 8px;font-size:10px;font-weight:800}.picker-tag.recent{background:var(--ink);color:#fff}.picker-tag.muted{color:#0d182459}.picker-actions{gap:8px;display:flex}.picker-actions button{flex:1}.topbar-lecture{align-items:center;gap:10px;min-width:0;display:flex}.lecture-name{letter-spacing:-.01em;text-overflow:ellipsis;white-space:nowrap;max-width:32ch;font-size:12px;font-weight:800;overflow:hidden}.lecture-notice{background:#0d18240d;border-radius:12px;margin-bottom:14px;padding:10px 12px;font-size:12px;line-height:1.6}.term-list{flex-direction:column;gap:4px;max-height:260px;list-style:none;display:flex;overflow-y:auto}.term-row{border:1px solid var(--line);background:#fff;border-radius:10px;align-items:center;gap:8px;padding:7px 10px;font-size:12px;display:flex}.term-main{flex-direction:column;flex:1;gap:1px;min-width:0;display:flex}.term-main b{font-weight:800}.term-main em{color:#0d18248c;text-overflow:ellipsis;white-space:nowrap;font-size:11px;font-style:normal;overflow:hidden}.term-tag{background:#0d18240f;border-radius:99px;flex-shrink:0;padding:2px 6px;font-size:10px;font-weight:800}.stage-split{gap:0;width:100%;min-width:0;height:100%;min-height:0;display:flex}.stage-split.side-left{flex-direction:row}.stage-split.side-right{flex-direction:row-reverse}.stage-split.side-top{flex-direction:column}.stage-split.side-bottom{flex-direction:column-reverse}.stage-split.side-top .stage-split-captions,.stage-split.side-bottom .stage-split-captions{width:100%}.stage-split.side-top .stage-split-handle,.stage-split.side-bottom .stage-split-handle{cursor:row-resize}.stage-split.side-top .stage-split-handle:after,.stage-split.side-bottom .stage-split-handle:after{width:34px;height:3px}.stage-split-captions{flex-grow:0;flex-shrink:0;min-width:0;min-height:0;display:flex}.stage-split-captions .caption-stage{aspect-ratio:auto;width:100%;height:100%;min-height:0}.stage-split-material{min-width:0;min-height:0;text-align:inherit;font:inherit;color:inherit;cursor:pointer;background:#fff;border:0;flex:1;padding:0;display:block}.stage-split-material:disabled{cursor:default}.preview-card .stage-split{aspect-ratio:16/9;border-radius:18px;height:auto;overflow:hidden}.preview-card.with-material{min-height:0}.stage-split.fitted{justify-content:center;align-items:center}.stage-split.fitted.theme-dark{background:#080d14}.stage-split.fitted.theme-light{background:#f9f7ef}.stage-split.fitted .stage-split-material{flex:none}.stage-split.fitted .material-viewer{padding:0}.display-page .stage-split{height:100vh}.visually-hidden{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.material-upload{flex-direction:column;gap:8px;min-width:0;display:flex}.dropzone{border:1.5px dashed var(--line);cursor:pointer;background:#fff;border-radius:14px;align-items:center;gap:12px;padding:16px;transition:border-color .15s,background .15s;display:flex}.dropzone:hover,.dropzone.dragging{border-color:var(--ink);background:#0d182408}.dropzone.dragging{border-style:solid}.dropzone.busy{cursor:progress;border-style:solid;border-color:#0d182440}.dropzone.compact{padding:12px 14px}.dropzone.picked{border-style:solid;border-color:var(--ink)}.dropzone.picked .dropzone-icon{background:var(--ink);color:#fff}.link-button{color:#17181c80;text-underline-offset:3px;background:0 0;border:0;align-self:flex-start;margin-top:8px;padding:0;font-size:11px;font-weight:700;text-decoration:underline}.link-button:hover{color:var(--ink)}.dropzone-icon{background:var(--ink);width:34px;height:34px;color:var(--highlight);border-radius:11px;flex:none;place-items:center;font-size:16px;font-weight:900;display:grid}.dropzone-text{flex-direction:column;gap:2px;min-width:0;display:flex}.dropzone-text b{letter-spacing:-.01em;font-size:13px;font-weight:800}.dropzone-text em{color:#0d182480;font-size:11px;font-style:normal;line-height:1.5}.material-current{align-items:center;gap:8px;min-width:0;font-size:11px;display:flex}.material-current-name{text-overflow:ellipsis;white-space:nowrap;font-weight:700;overflow:hidden}.material-current-size{color:#0d18248c;background:#0d18240f;border-radius:99px;flex:none;padding:2px 7px;font-weight:800}.material-current-check{background:var(--ink);width:15px;height:15px;color:var(--highlight);border-radius:99px;flex:none;place-items:center;font-size:9px;font-weight:900;display:grid}.material-done{background:#0d18240d;border-radius:10px;padding:9px 11px;font-size:11px;font-weight:600;line-height:1.55}.upload-bar{background:#0d182414;border-radius:99px;height:5px;overflow:hidden}.upload-bar-fill{background:var(--ink);border-radius:99px;height:100%;transition:width .2s}.upload-bar-fill.indeterminate{width:40%;animation:1.1s ease-in-out infinite upload-slide}@keyframes upload-slide{0%{transform:translate(-100%)}to{transform:translate(250%)}}.dropzone-spinner{border:2px solid #d7ff424d;border-top-color:var(--highlight);border-radius:99px;width:14px;height:14px;animation:.7s linear infinite dropzone-spin}@keyframes dropzone-spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.upload-bar-fill.indeterminate{opacity:.45;width:100%;animation:none}.dropzone-spinner{animation:none}}.connect-step{color:#0d182499;align-items:center;gap:7px;margin-top:10px;font-size:11px;font-weight:700;display:flex}.connect-step-dot{background:var(--ink);border-radius:99px;width:6px;height:6px;animation:1s ease-in-out infinite connect-pulse}@keyframes connect-pulse{50%{opacity:.2}}@media (prefers-reduced-motion:reduce){.connect-step-dot{animation:none}}.material-viewer{background:#fff;place-items:center;width:100%;height:100%;padding:8px;display:grid;position:relative;overflow:hidden}.material-canvas{object-fit:contain;max-width:100%;max-height:100%;display:block;width:auto!important;height:auto!important}.material-viewer-loading{color:#0d182473;font-size:12px;font-weight:700;position:absolute}.page-nav{align-items:center;gap:6px;display:inline-flex}.page-nav-count{text-align:center;font-variant-numeric:tabular-nums;min-width:56px;font-size:11px;font-weight:800}.material-viewer-failed{text-align:center;max-width:320px;color:var(--ink);background:#0d18240d;border-radius:12px;flex-direction:column;gap:5px;padding:14px 16px;font-size:12px;font-weight:800;display:flex;position:absolute}.material-viewer-failed em{color:#0d182499;word-break:break-word;font-size:11px;font-style:normal;font-weight:600}.material-viewer-failed span{color:#0d182473;font-size:11px;font-weight:600}.stage-split-handle{cursor:col-resize;touch-action:none;background:#0d18240f;flex:0 0 10px;position:relative}.stage-split-handle:after{content:"";background:#0d182447;border-radius:99px;width:2px;height:34px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.stage-split-handle:hover,.stage-split-handle:focus-visible{background:#0d182424;outline:none}@media (max-width:900px){.stage-split-handle{display:none}}.primary-action{border-bottom:1px solid var(--line);flex-direction:column;gap:8px;padding:18px 24px;display:flex}.primary-action .primary-button,.primary-action .danger-button{letter-spacing:-.01em;min-height:54px;font-size:14px}.primary-action .connect-step{margin-top:2px}.coming{flex-direction:column;flex:1;gap:16px;padding:16px;display:flex}.coming-live{background:var(--ink);color:#fff;border-radius:14px;align-items:center;gap:10px;padding:13px 15px;display:flex}.coming-live span{flex-direction:column;gap:2px;min-width:0;display:flex}.coming-live b{font-size:13px;font-weight:800}.coming-live em{color:#fff9;font-size:11px;font-style:normal}.coming-live-dot{background:var(--highlight);border-radius:99px;flex:none;width:8px;height:8px;box-shadow:0 0 0 4px #d7ff422e}.coming-preview{border:1px dashed var(--line);opacity:.55;filter:saturate(.6);-webkit-user-select:none;user-select:none;background:#0d182405;border-radius:14px;gap:8px;padding:15px;display:grid;position:relative}.coming-preview-label{color:#0d182480;font-size:11px;font-weight:700}.coming-preview-box{border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px 14px;font-size:14px}.coming-preview-out{background:var(--ink);color:#fff;border-radius:12px;gap:5px;padding:13px 14px;display:grid}.coming-preview-out span{font:700 10px/1 var(--font-space-mono);letter-spacing:.06em;color:var(--highlight)}.coming-preview-out p{margin:0;font-size:15px;line-height:1.5}.coming-badge{background:var(--live);color:#fff;letter-spacing:.02em;border-radius:99px;padding:4px 10px;font-size:10px;font-weight:900;position:absolute;top:12px;right:12px}.coming-list h2{color:#0d182480;margin-bottom:9px;font-size:12px;font-weight:800}.coming-list ul{flex-direction:column;gap:7px;list-style:none;display:flex}.coming-list li{border:1px solid var(--line);background:#fff;border-radius:12px;justify-content:space-between;align-items:flex-start;gap:10px;padding:12px 14px;display:flex}.coming-item-main{flex-direction:column;gap:2px;min-width:0;display:flex}.coming-item-main b{font-size:13px;font-weight:800}.coming-item-main em{color:#0d18248c;font-size:11px;font-style:normal;line-height:1.5}.coming-when{color:#0d18248c;background:#0d18240f;border-radius:99px;flex:none;padding:3px 8px;font-size:10px;font-weight:800}.coming-lang .select{width:100%}.coming-foot{text-align:center;color:#0d182466;margin-top:auto;padding-top:4px;font-size:11px}.student-wave{padding:0 16px 12px}.student-wave-button{border:1px solid var(--line);width:100%;min-height:50px;color:var(--ink);background:#fff;border-radius:14px;justify-content:center;align-items:center;gap:8px;font-size:14px;font-weight:800;transition:background .15s,color .15s,border-color .15s;display:flex}.student-wave-button span{font-size:17px;line-height:1}.student-wave-button.sent{border-color:var(--ink);background:var(--ink);color:var(--highlight)}.student-wave-button:disabled{opacity:.6}.hands-pill{background:var(--live);color:#fff;letter-spacing:-.01em;border-radius:99px;align-items:center;gap:6px;padding:5px 11px;font-size:11px;font-weight:900;animation:.25s both hands-in;display:inline-flex}.hands-pill span{font-size:13px;line-height:1}@keyframes hands-in{0%{opacity:0;transform:scale(.85)}}@media (prefers-reduced-motion:reduce){.hands-pill{animation:none}}.display-unanswered{z-index:12;color:#ffd9d6;text-align:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#dc4a4329;border:1px solid #dc4a4380;border-radius:999px;max-width:min(560px,100vw - 40px);padding:11px 16px;font-size:13px;font-weight:700;position:fixed;top:18px;left:50%;transform:translate(-50%)}.display-start{background:var(--highlight)!important;color:var(--ink)!important;font-weight:900!important}.display-stop{background:var(--live)!important;color:#fff!important;font-weight:900!important}.display-start:disabled{opacity:.55}@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}