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.code-label{background:#9b59b6}.code-content{color:#333;font-family:Monaco,Consolas,monospace;font-size:.95rem}.code-line{padding:4px 0;border-bottom:1px dashed #e0e0e0}.code-line:last-child{border-bottom:none}.python-code pre{background:#2d3436;color:#dfe6e9;border-radius:10px;padding:20px;overflow-x:auto;font-family:Monaco,Consolas,monospace;font-size:.9rem;line-height:1.6;margin-bottom:15px}.python-code pre code{white-space:pre-wrap}.lesson-section-block.phenomenon{background:linear-gradient(135deg,#e8f5e9,#f1f8e9);border:1px solid #c8e6c9}.lesson-section-block.phenomenon h3{color:#2e7d32}.lesson-section-block.objective{background:linear-gradient(135deg,#e3f2fd,#e8eaf6);border:1px solid #bbdefb}.lesson-section-block.objective h3{color:#1565c0}.lesson-section-block.original-link{display:flex;flex-direction:column;gap:15px}.lesson-section-block.original-link .lesson-link-btn{align-self:flex-start}.lesson-section-block.original-link .lesson-link-btn+.lesson-link-btn{margin-top:0}@media(max-width:768px){.lesson-viewer.active{grid-template-areas:"header" "main";grid-template-columns:1fr;grid-template-rows:auto 1fr}.lesson-sidebar{display:none}.lesson-main{padding:20px}.block-category{flex-direction:column}.wiring-item{flex-direction:column;align-items:flex-start}.wiring-label{min-width:auto}}