:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.tab-buttons button{padding:10px 20px;cursor:pointer;background:transparent;border:none;border-bottom:2px solid transparent;transition:.3s}.tab-buttons button.active{border-bottom:2px solid #646cff;color:#646cff;font-weight:700}.tab-content{margin-top:20px;padding:20px;border:1px solid #ddd}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.container{max-width:900px;margin:0 auto;padding:2rem;font-family:Inter,system-ui,sans-serif;transition:transform .2s ease;background:#fff;color:#333}.container html{overflow-y:scroll}.container button{border:2px solid transparent;box-sizing:border-box}.container button:focus{outline:none;box-shadow:0 0 0 4px #2563eb40;border-color:transparent}.container collapse{max-height:0;overflow:hidden;transition:max-height .3s ease}.container .collapse.open{max-height:300px}.course-card{padding:1.5rem;border:1px solid #e1e1e1;border-radius:12px;background:#fff;color:#333;transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s ease;display:flex;flex-direction:column;gap:.5rem}.course-card:hover{transform:translateY(-8px);box-shadow:0 12px 24px #0000001a;border-color:#007acc}.course-card:hover{transform:translateY(-5px);box-shadow:0 10px 20px #0000000d}.course-code{font-size:.8rem;font-weight:700;color:#007bff;text-transform:uppercase}.category-header{font-size:1.8rem;font-weight:800;color:#222;margin-top:3rem;margin-bottom:1rem;border-bottom:3px solid #007acc;display:inline-block;padding-right:20px}.course-section{margin-bottom:2rem}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem}