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var(--rule);background:var(--surface-2);flex-direction:column;display:flex;overflow:hidden}.topbar{height:var(--topbar);background:var(--surface);border-bottom:1px solid var(--rule);z-index:30;align-items:center;gap:16px;padding:0 20px;display:flex;position:sticky;top:0}@media (max-width:768px){.lesson-grid{grid-template-columns:1fr}.lesson-grid>.left{display:none}.lesson-grid>.right{border-left:none;border-top:1px solid var(--rule);z-index:40;border-radius:18px 18px 0 0;height:64px;transition:height .25s;position:fixed;bottom:0;left:0;right:0}.lesson-grid>.right.expanded{height:75vh}}::selection{background:var(--teal-100);color:var(--ink)}html.dark ::selection{background:#34c79e66}@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 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