:root{--text: #1f2937;--muted: #6b7280;--border: #e5e7eb;--light-bg: #f8fafc;--dark-bg: #111827;--nav-link: #f9fafb;--max-width: 1500px}html{font-size:1.1rem}body{margin:0;font-family:Roboto,Helvetica,Arial,sans-serif;line-height:1.7;color:var(--text);background:#fff}img{max-width:100%;height:auto;display:block}.container{max-width:var(--max-width);margin:1rem auto;padding:0 2rem}.container-full{width:100%;padding:0 2rem}.two-column{display:flex;gap:2rem}.two-column .half{flex:1}.two-column .main-3{flex:3}.two-column .main-2{flex:2}.two-column .sidebar{flex:1;padding:0 1rem;border-radius:8px}.columns{max-width:var(--max-width);display:grid;grid-template-columns:repeat(auto-fill, minmax(300px, 1fr));gap:2rem}.column{flex:1 1 300px}.centered{text-align:center}h1,h2,h3,h4,h5,h6{margin:1rem 0;line-height:1.25}h1{font-size:2.2rem;margin-top:0}h2{font-size:1.7rem}h3{font-size:1.3rem}p,small{margin:1rem 0}small{color:var(--muted)}.navbar{background:var(--dark-bg)}.navbar ul{list-style:none;margin:0;padding:0 2rem;display:flex;align-items:center;justify-content:space-evenly}.nav-links a{text-decoration:none;color:var(--nav-link);font-weight:500;padding:.4rem 2rem;transition:opacity .3s}.navbar a:hover{opacity:.8}.navbar .logo{padding-top:.5rem}.navbar .logo img{display:inline-block}.hamburger button{display:none}pre{border:1px solid var(--border);border-radius:6px;overflow-x:auto;margin:1.5rem 0}code,p code,li code{font-family:ui-monospace,"Liberation Mono",monospace;font-size:.95rem;background:var(--light-bg);border-radius:4px}p code,li code{padding:.15em .4em}table{display:block;width:100%;border-collapse:collapse;overflow-x:auto;margin:1.5rem 0;font-size:.95rem}thead{border-bottom:2px solid var(--border)}th,td{padding:.5rem .7rem;border-bottom:1px solid var(--border);text-align:right}th:first-child,td:first-child{text-align:left}tbody tr:nth-child(even){background:var(--light-bg)}footer{margin-top:4rem;padding:2rem;border-top:1px solid var(--border);color:var(--muted);font-size:.9rem;text-align:center}footer a{color:inherit;text-decoration:none;transition:text-decoration .3s}footer a:hover{text-decoration:underline}@media(max-width: 768px){.two-column{flex-direction:column}.main-3,.sidebar{flex:unset;width:100%}.sidebar{margin-top:2rem}.columns .column{flex:1 1 100%;max-width:90%}.navbar ul{justify-content:space-between}.nav-links{display:none;flex-direction:column;gap:0;position:absolute;top:60px;right:2rem;background:var(--dark-bg);padding:1rem;border-radius:8px;box-shadow:0 4px 8px rgba(0, 0, 0, 0.1)}.hamburger button{display:block}}.notebook{max-width:1200px}.vega-embed,[id^=altair-viz],.notebook img{margin:2rem auto;overflow-x:auto}.vega-embed svg{max-width:100%}.dataframe{font-variant-numeric:tabular-nums}.button{display:inline-flex;align-items:center;justify-content:center;padding:.6rem 1.2rem;font-size:.95rem;font-weight:500;border-radius:6px;border:1px solid var(--border);background-color:var(--dark-bg);color:var(--nav-link);cursor:pointer;text-decoration:none;transition:background-color .2s ease,border-color .2s ease,transform .05s ease,box-shadow .2s ease}.button:hover{background-color:#000;border-color:var(--dark-bg)}.button:active{transform:translateY(1px)}.button:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31, 41, 55, 0.25)}.card{background-color:var(--light-bg);padding:1rem;border-radius:8px}.card-header{display:flex;justify-content:space-between;align-items:center}.card-header button{margin:0;font-size:1rem;font-weight:bold}.card a{color:inherit;text-decoration:none}.card h3{font-size:1rem}.card img{object-fit:cover;width:100%;max-height:200px}.video-wrapper{position:relative;width:100%;padding-top:56.25%;overflow:hidden}.video-wrapper iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0}