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.brd-card-accent{display:none}.brd-empty{background:var(--card);border-radius:28px;padding:60px 40px;text-align:center;border:1px solid rgba(45,42,62,.04);box-shadow:var(--shadow)}.brd-empty-icon{font-size:3.5rem;margin-bottom:16px}.brd-empty-title{font-family:Fredoka,sans-serif;font-weight:700;font-size:1.2rem;color:var(--ink);margin-bottom:6px}.brd-empty-text{font-size:.88rem;color:var(--ink-muted);max-width:360px;margin:0 auto 20px;line-height:1.5}.brd-skel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(300px,100%),1fr));gap:18px}.brd-skel-card{background:var(--card);border-radius:24px;overflow:hidden;border:1px solid rgba(45,42,62,.04)}.brd-skel-preview{aspect-ratio:16/9;background:var(--bg);animation:brd-shimmer 1.5s ease-in-out infinite}.brd-skel-body{padding:18px 20px}.brd-skel-line{height:14px;background:var(--bg);border-radius:8px;margin-bottom:10px;animation:brd-shimmer 1.5s ease-in-out infinite}.brd-skel-line.w60{width:60%}.brd-skel-line.w40{width:40%}.brd-skel-line.w80{width:80%}@keyframes brd-shimmer{0%,to{opacity:.6}50%{opacity:.3}}@media(max-width:900px){.brd-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.brd-grid{grid-template-columns:1fr}}@media(max-width:500px){.brd-stats{grid-template-columns:1fr;gap:8px}.brd-stat{padding:14px 16px;border-radius:16px}.brd-stat-icon{width:38px;height:38px;border-radius:12px;font-size:1.05rem}.brd-stat-value{font-size:1.2rem}.brd-toolbar{flex-direction:column;align-items:stretch}.brd-search{max-width:100%}.brd-class-tabs{flex-wrap:nowrap}}.brd-modal-bg{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:flex-start;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);overflow-y:auto;padding:clamp(10px,2.5vh,24px)}.brd-modal{background:var(--card);border-radius:18px;padding:28px 32px;width:100%;max-width:420px;max-height:calc(100vh - 24px);max-height:calc(100dvh - 24px);overflow-y:auto;box-shadow:0 20px 40px #0003}.brd-modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.brd-modal-header h3{font-size:1.1rem;font-weight:800;margin:0}.brd-modal-close{background:none;border:none;font-size:1.1rem;cursor:pointer;color:var(--ink-muted);width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center}.brd-modal-close:hover{background:#0000000f}.brd-modal-label{display:block;font-size:.78rem;font-weight:700;color:var(--ink-muted);margin-bottom:6px;margin-top:14px}.brd-modal-input,.brd-modal-select{width:100%;padding:10px 14px;border-radius:10px;border:1.5px solid rgba(45,42,62,.08);background:var(--bg);color:var(--ink);font-size:.88rem;font-family:inherit;outline:none;transition:border-color .2s;box-sizing:border-box}.brd-modal-input:focus,.brd-modal-select:focus{border-color:var(--blue)}.brd-modal-actions{display:flex;gap:10px;margin-top:22px}.brd-modal-btn{flex:1;padding:10px 16px;border-radius:10px;border:none;font-family:inherit;font-weight:700;font-size:.84rem;cursor:pointer;transition:all .2s}.brd-modal-btn.primary{background:var(--blue);color:#fff}.brd-modal-btn.primary:hover{filter:brightness(1.08)}.brd-modal-btn.primary:disabled{opacity:.5;cursor:not-allowed}.brd-modal-btn.ghost{background:#2d2a3e0f;color:var(--ink-muted)}.brd-modal-btn.ghost:hover{background:#2d2a3e1a}@media(max-width:600px){.brd-modal{padding:16px;border-radius:14px;max-height:calc(100vh - 10px);max-height:calc(100dvh - 10px)}.brd-modal-actions{flex-direction:column-reverse}.brd-modal-btn{width:100%}}.brd-action-btn.edit{background:#4e7cff14;color:var(--blue)}.brd-action-btn.edit:hover{background:#4e7cff29}.brd-canvas-fullscreen{position:fixed;top:0;left:var(--sidebar-w, 260px);right:0;bottom:0;display:flex;flex-direction:row;z-index:50;background:#f0f0f0;overflow:hidden}@media(max-width:1023px){.brd-canvas-fullscreen{left:0}}.brd-board-shell{--brd-left-chrome-top: 64px;--brd-tool-rail-w: 52px;--brd-nav-w: min(240px, 36vw);--brd-top-right-w: 168px;display:flex;flex-direction:row;flex:1;min-height:0;min-width:0;overflow:hidden;position:relative}.brd-tool-sidebar-outer{position:absolute;left:12px;top:var(--brd-left-chrome-top);bottom:12px;transform:none;z-index:60;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0;overflow:visible;pointer-events:none;max-height:none}.brd-tool-sidebar{width:var(--brd-tool-rail-w);flex-shrink:1;min-height:0;max-height:100%;display:flex;flex-direction:column;align-items:center;padding:10px 6px;background:#fff;border:1px solid var(--border, rgba(45,42,62,.1));border-radius:14px;box-shadow:0 4px 20px 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#2d2a3e29;padding:6px}.brd-tool-flyout--portal{position:fixed;z-index:10050;animation:brd-flyout-in .14s ease-out}.brd-tool-flyout--portal.brd-tool-flyout--right{transform:translateY(-50%)}.brd-tool-flyout--portal.brd-tool-flyout--top{transform:translate(-50%,-100%)}.brd-tool-flyout--portal.brd-tool-flyout--bottom{transform:translate(-50%)}.brd-tool-flyout-item.danger{color:#ef4444}.brd-tool-flyout-item.danger:hover{background:#ef444414}.brd-tool-flyout-item:disabled{opacity:.4;cursor:default}@keyframes brd-flyout-in{0%{opacity:0}to{opacity:1}}.brd-tool-flyout-title{font-size:10px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-muted, #9b95a8);padding:4px 10px 6px;border-bottom:1px solid rgba(45,42,62,.06);margin-bottom:4px}.brd-tool-flyout-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border:none;background:transparent;border-radius:8px;cursor:pointer;font-family:inherit;font-size:12px;font-weight:600;color:var(--ink, 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rgba(45,42,62,.06);padding-top:8px}.brd-color-flyout-swatch{width:24px;height:24px;border-radius:6px;border:2px solid transparent;cursor:pointer;padding:0;transition:transform .1s,border-color .1s,box-shadow .1s}.brd-color-flyout-swatch:hover{transform:scale(1.1)}.brd-color-flyout-swatch.active{border-color:#1a73e8;box-shadow:0 0 0 2px #e8f0fe}.brd-color-flyout-swatch--sticky{border-radius:4px}.brd-fontsize-trigger{min-width:36px}.brd-fontsize-label{font-size:12px;font-weight:800;font-family:JetBrains Mono,Nunito,monospace;line-height:1;letter-spacing:-.02em}.brd-fontsize-flyout{min-width:168px}.brd-fontsize-controls{display:flex;flex-direction:column;gap:10px;padding:4px 12px 12px}.brd-fontsize-slider{width:100%;accent-color:#1A73E8}.brd-fontsize-input-row{display:flex;align-items:center;gap:6px}.brd-fontsize-input{width:52px;padding:6px 8px;border:1.5px solid var(--border, rgba(45, 42, 62, .12));border-radius:8px;font-size:13px;font-weight:700;font-family:JetBrains 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6px}.brd-emoji-btn{width:32px;height:32px;border:none;border-radius:8px;background:transparent;font-size:20px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}.brd-emoji-btn:hover{background:#2d2a3e0f}.brd-emoji-btn.active{background:#3b82f61f;box-shadow:inset 0 0 0 1px #3b82f659}.brd-emoji-menu-trigger .brd-emoji-trigger-char{font-size:16px;line-height:1}.brd-emoji-menu-trigger{gap:2px}.brd-brush-flyout{min-width:188px}.brd-brush-width-section{padding-bottom:4px}.brd-brush-width-controls{display:flex;flex-direction:column;gap:8px;padding:0 12px 10px}.brd-brush-width-slider{width:100%;accent-color:#1A73E8}.brd-brush-width-input-row{display:flex;align-items:center;gap:6px}.brd-brush-width-input{width:52px;padding:6px 8px;border:1.5px solid var(--border, rgba(45, 42, 62, .12));border-radius:8px;font-size:13px;font-weight:700;font-family:JetBrains 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#00000040;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);max-width:min(92%,calc(100% - 140px));box-sizing:border-box}.brd-pres-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;border-radius:8px;background:#ffffff1f;color:#fff;cursor:pointer}.brd-pres-btn:hover{background:#ffffff38}.brd-pres-label{font-size:13px;font-weight:600;min-width:0;flex:1 1 auto;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brd-pres-exit{display:flex;align-items:center;gap:4px;margin-left:4px;padding:6px 10px;border:none;border-radius:8px;background:#ef4444d9;color:#fff;font-size:12px;font-weight:600;cursor:pointer}.brd-pres-exit:hover{background:#ef4444}.brd-connector-hint{font-size:11px;font-weight:600;color:#1a73e8;background:#e8f0fe;padding:3px 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--tw-ease{syntax:"*";inherits:false}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg:#F6F4FA;--bg2:#FFFBF5;--ink:#2D2A3E;--ink-light:#6B6580;--ink-muted:#9B95A8;--orange:#FF6B3D;--pink:#FF4E8C;--blue:#4E7CFF;--blue-soft:#D4E0FF;--green:#2EC4A0;--green-soft:#C8F5E8;--yellow:#FFC641;--yellow-soft:#FFF3D1;--purple:#8B5CF6;--purple-soft:#E8DEFF;--red:#FF5050;--red-soft:#FFE5E5;--card:#FFF;--border:#E8E5F0;--r:16px;--rl:24px;--shadow:0 8px 28px rgba(45,42,62,.06);--accent:var(--blue);--accent-soft:var(--blue-soft);--hero-grad:linear-gradient(135deg,#4E7CFF 0%,#8B5CF6 100%);--hero-shadow:rgba(78,124,255,.22);--cta-grad:linear-gradient(135deg,var(--blue),var(--purple));--av-grad:linear-gradient(135deg,var(--blue),var(--purple))}.phone[data-role=student],.m-shell[data-role=student],html.m-mobile-site[data-role=student]{--accent:#4E7CFF;--accent-soft:#D4E0FF;--hero-grad:linear-gradient(135deg,#4E7CFF 0%,#8B5CF6 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