:root{--bg:#fbf8f4;--card:#fff;--ink:#1f1b16;--muted:#6b6259;--accent:#b5462f;--line:#e8e0d6}
@media (prefers-color-scheme:dark){:root{--bg:#171412;--card:#211d1a;--ink:#f3ede6;--muted:#b3a99e;--accent:#e2765e;--line:#3a332d}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Sarabun","Noto Sans Thai",system-ui,sans-serif;line-height:1.75;font-size:17px}
a{color:var(--accent)}
header{border-bottom:1px solid var(--line);background:var(--card)}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
.top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;flex-wrap:wrap}
.brand{font-weight:700;font-size:20px;text-decoration:none;color:var(--ink)}
nav a{margin-left:18px;text-decoration:none;color:var(--muted);font-size:15px}
nav a:hover{color:var(--accent)}
.hero{padding:56px 0 32px}
.hero h1{font-size:34px;line-height:1.3;margin:0 0 12px}
.hero p{color:var(--muted);margin:0;max-width:620px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px 26px;margin:20px 0}
.card h2{margin:0 0 12px;font-size:21px}
dl{display:grid;grid-template-columns:170px 1fr;gap:8px 16px;margin:0}
dt{color:var(--muted)}dd{margin:0}
main.doc h1{font-size:28px;margin:40px 0 6px}
main.doc h2{font-size:20px;margin:28px 0 8px}
.small{color:var(--muted);font-size:14px}
footer{border-top:1px solid var(--line);margin-top:48px;padding:24px 0 40px;color:var(--muted);font-size:14px}
footer a{margin-right:16px}
@media (max-width:600px){dl{grid-template-columns:1fr}dt{margin-top:8px}.hero h1{font-size:27px}nav a{margin:0 14px 0 0}}