:root{color-scheme:light;--ink:#1d304b;--blue:#204da4;--muted:#52627b;--paper:#f3f6fb;--line:#ccd6e6;--accent:#b64231}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.8 Thonburi,'Noto Sans Thai',Tahoma,sans-serif}a{color:var(--blue);text-underline-offset:.2em;overflow-wrap:anywhere}a:hover{color:var(--accent)}a:focus-visible{outline:3px solid var(--blue);outline-offset:5px}header,main,footer{width:min(1120px,calc(100% - 48px));margin:auto}header{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:28px 0;border-bottom:1px solid var(--line)}.brand{font-size:25px;font-weight:700;text-decoration:none;color:var(--ink)}nav{display:flex;gap:22px;flex-wrap:wrap}nav a{padding:8px 0}h1,h2{line-height:1.45;text-wrap:balance}h1{font-size:clamp(32px,4.3vw,54px);margin:12px 0 24px;letter-spacing:-.03em}h2{font-size:27px;margin-top:42px}p{max-width:72ch}.intro{color:var(--accent);font-weight:700}.lead{font-size:20px;color:var(--muted)}.hero{display:grid;grid-template-columns:1.5fr 1fr;gap:64px;align-items:center;padding:78px 0}.button{display:inline-block;background:var(--blue);color:#fff;border-radius:6px;padding:12px 24px;margin-top:16px;text-decoration:none;font-weight:700}.button:hover{background:#183b7c;color:#fff}.timeline{background:white;list-style:decimal-leading-zero;margin:0;padding:24px 28px 24px 68px;border-top:5px solid var(--blue)}.timeline li{padding:18px 0 18px 12px;border-bottom:1px solid var(--line)}.timeline li:last-child{border:0}.timeline li::marker{color:var(--blue);font-weight:700}.timeline b,.timeline span{display:block}.timeline b{font-size:22px}.timeline span{color:var(--muted);font-size:16px}.split{display:grid;grid-template-columns:1fr 1.5fr;gap:64px;border-top:1px solid var(--line);padding:32px 0}.split h2{margin-top:16px}code{font-size:.9em;overflow-wrap:anywhere}footer{margin-top:60px;padding:32px 0 48px;border-top:1px solid var(--line);font-size:15px;color:var(--muted)}footer p{margin:4px 0 12px}footer a{display:inline-block;margin-right:24px;min-height:44px;padding:6px 0}.article{max-width:800px;padding-top:48px}.article h1{font-size:clamp(30px,5vw,44px)}.skip{position:absolute;left:20px;top:-100px;background:white;padding:10px;z-index:2}.skip:focus{top:10px}section{scroll-margin-top:24px}@media(max-width:720px){header,main,footer{width:calc(100% - 36px)}header{align-items:flex-start;flex-direction:column;gap:8px}.hero,.split{grid-template-columns:1fr;gap:22px}.hero{padding:36px 0}.split{padding:24px 0}.lead{font-size:18px}.timeline{margin-bottom:12px}.article{padding-top:28px}nav{gap:20px}}