:root{--font-sans:"Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--bg:#fcfcf9;--surface:#fff;--text:#1f2937;--muted:#5b6472;--border:#e5e7eb;--accent:#1d4ed8;--accent-hover:#1e40af;--max-width:780px;--radius:14px;--shadow:0 10px 30px #0000000d}.skip-link{position:absolute;left:-9999px}.skip-link:focus{z-index:1000;top:1rem;left:1rem}*{box-sizing:border-box}html{scroll-behavior:smooth}@font-face{font-family:Inter;src:url(/InterVariable.woff2)format("woff2");font-weight:100 900;font-style:normal}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;line-height:1.65}img,video{border-radius:10px;max-width:100%;height:auto;display:block}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover);text-decoration:underline}main{width:min(100% - 2rem, var(--max-width));margin:0 auto;padding:3rem 0 5rem}header{width:min(100% - 2rem, var(--max-width));margin:0 auto;padding:4rem 0 2rem}header h1{letter-spacing:-.03em;margin:0 0 .5rem;font-size:clamp(2rem,4vw,3.2rem);line-height:1.08}header p{color:var(--muted);margin:.5rem 0 0;font-size:1.05rem}section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:2rem}section+section{margin-top:1.5rem;scroll-margin-top:3rem}section h2{letter-spacing:-.02em;border-bottom:1px solid var(--border);margin:0 0 1.25rem;padding-bottom:.75rem;font-size:1.5rem;line-height:1.2}section p,section ul,section ol,section blockquote,section pre,section table,section figure{margin:0 0 1rem}section p:last-child,section ul:last-child,section ol:last-child,section blockquote:last-child,section pre:last-child,section table:last-child,section figure:last-child{margin-bottom:0}section h3,section h4,section h5,section h6{letter-spacing:-.02em;margin:1.5rem 0 .75rem;line-height:1.25}section h3{font-size:1.15rem}section h4{font-size:1rem}section ul,section ol{padding-left:1.25rem}section li+li{margin-top:.35rem}section strong{font-weight:650}section em{font-style:italic}section hr{border:0;border-top:1px solid var(--border);margin:1.5rem 0}section blockquote{border-left:4px solid var(--border);color:var(--muted);margin-left:0;padding:.25rem 0 .25rem 1rem}section code{background:#f3f4f6;border-radius:6px;padding:.15rem .35rem;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.92em}section pre{color:#f9fafb;background:#111827;border-radius:10px;padding:1rem;overflow-x:auto}section pre code{color:inherit;background:0 0;padding:0}section table{border-collapse:collapse;width:100%;font-size:.96rem}section th,section td{text-align:left;border-bottom:1px solid var(--border);vertical-align:top;padding:.75rem .85rem}section th{color:var(--muted);font-weight:600}section a[href$=\.mp4]{margin-top:.35rem;font-weight:600;display:inline-block}figure{margin:1.25rem 0}figcaption{color:var(--muted);margin-top:.65rem;font-size:.94rem}.site-nav{z-index:1000;background:var(--bg);border-bottom:1px solid var(--border);position:sticky;top:0}.site-nav nav{justify-content:space-between;width:min(100% - 2rem,780px);margin:0 auto;padding:.75rem 0;display:flex}.site-nav ul{flex-wrap:wrap;gap:.9rem 1.2rem;margin:0;padding:0;list-style:none;display:flex}.site-nav a{font-weight:500}footer{width:min(100% - 2rem, var(--max-width));color:var(--muted);margin:0 auto;padding:1rem 0 3rem;font-size:.95rem}@media (width<=640px){main{width:min(100% - 1rem, var(--max-width));padding-top:2rem}header{width:min(100% - 1rem, var(--max-width));padding-top:2.5rem}section{padding:1.25rem}section h2{font-size:1.3rem}}details{border:1px solid var(--border);background:var(--surface);border-radius:12px;overflow:hidden}details+details{margin-top:1.25rem}details summary p{border-left:2px solid var(--border);color:var(--muted);padding-left:.75rem;padding-right:2rem;font-style:italic;line-height:1.4}details summary h3{margin:.5rem 0;padding:0;line-height:1.2}details summary{cursor:pointer;padding:.25rem 1.5rem;list-style:none;transition:background-color .16s}details summary:hover{background:#f7f7f4}details summary{align-items:center;gap:1rem;min-height:100px}.details-content{border-top:1px solid var(--border);padding:1.25rem 1.5rem 1.5rem}