header{border-bottom:1px solid #222;margin-bottom:1rem}.site-header{position:sticky;top:0;z-index:1000;background:var(--background);border-bottom:1px solid var(--border)}.site-header-inner{max-width:var(--max-width);margin:0 auto;padding:.75rem 1rem;display:flex;align-items:center;justify-content:space-between;gap:2rem}.site-title{font-weight:700;white-space:nowrap}.site-nav ul{display:flex;align-items:center;gap:1.25rem;margin:0;padding:0;list-style:none}.site-nav li{margin:0}.site-nav a{display:block;padding:.4rem 0;color:var(--text);font-size:.95rem}.site-nav a:hover{color:var(--accent);text-decoration:none}@media(max-width:700px){.site-header-inner{align-items:flex-start;flex-direction:column;gap:.5rem}.site-nav{width:100%;overflow-x:auto}.site-nav ul{width:max-content;gap:1rem}}footer{border-top:1px solid #222;margin-top:1rem}body{color:#222;font-family:sans-serif;line-height:1.5;margin:1rem;max-width:768px}a{color:#00e;text-decoration:none}html{scroll-behavior:smooth}:root{--max-width: 1100px;--content-width: 800px;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 2rem;--spacing-xl: 4rem;--border-radius: 8px;--text: #222;--text-muted: #666;--background: #fff;--surface: #f6f7f9;--border: #ddd;--accent: #2457a6;--accent-hover: #173d78}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:5rem}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6;color:var(--text);background:var(--background)}main{max-width:var(--max-width);margin:0 auto;padding:var(--spacing-xl) var(--spacing-lg)}article{max-width:var(--content-width);margin:0 auto}h1,h2,h3,h4{line-height:1.25}h1{margin-top:0;font-size:2.5rem}h2{margin-top:3rem;padding-bottom:.5rem;border-bottom:2px solid var(--border)}h3{margin-top:2rem}p{margin:1rem 0}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover);text-decoration:underline}.course-header{margin-bottom:var(--spacing-xl);padding-bottom:var(--spacing-lg);border-bottom:1px solid var(--border)}.course-header h1{margin-bottom:.25rem}.course-code{margin-top:0;color:var(--text-muted);font-size:1.1rem}.course-info{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2rem}.course-info>div{padding:1rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--border-radius)}.course-info dt{margin-bottom:.25rem;color:var(--text-muted);font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.course-info dd{margin:0;font-weight:500}section{scroll-margin-top:5rem;margin-bottom:var(--spacing-xl)}ul,ol{padding-left:1.5rem}li{margin:.4rem 0}.lecture-list{list-style:none;padding:0}.lecture-list li{margin:.75rem 0}.lecture-list a{display:block;padding:1rem 1.25rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--border-radius);transition:background .15s,border-color .15s,transform .15s}.lecture-list a:hover{text-decoration:none;border-color:var(--accent);transform:translateY(-1px)}table{width:100%;border-collapse:collapse;margin:1.5rem 0}th,td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--border)}th{background:var(--surface);font-weight:600}tr:hover td{background:var(--surface)}.materials{display:flex;flex-wrap:wrap;gap:.75rem;margin:1rem 0}.materials a{display:inline-block;padding:.6rem 1rem;border:1px solid var(--accent);border-radius:var(--border-radius);font-weight:500}.materials a:hover{color:#fff;background:var(--accent);text-decoration:none}code{padding:.15rem .35rem;background:var(--surface);border-radius:4px;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace}pre{overflow-x:auto;padding:1rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--border-radius)}blockquote{margin:1.5rem 0;padding:.5rem 1.25rem;border-left:4px solid var(--accent);color:var(--text-muted);background:var(--surface)}img{max-width:100%;height:auto}@media(max-width:800px){main{padding:2rem 1rem}h1{font-size:2rem}.course-info{grid-template-columns:repeat(2,1fr)}table{display:block;overflow-x:auto}}@media(max-width:500px){.course-info{grid-template-columns:1fr}h1{font-size:1.75rem}}.site-layout{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;padding:2rem 1.5rem;border-right:1px solid var(--border);background:var(--surface)}.site-content{min-width:0;max-width:var(--max-width);width:100%;margin:0 auto;padding:3rem}
