*{box-sizing:border-box}
body{margin:0;background:#fff;color:#1b2433;font-family:"Kanit",Tahoma,"Leelawadee UI",sans-serif;font-size:16px;line-height:1.75}
header{border-bottom:1px solid #dce2ea;background:#fff}
.bar{max-width:820px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:#1b2433;font-weight:700;font-size:18px}
.mark{width:32px;height:32px;border-radius:8px;background:#14295c;color:#fff;display:grid;place-items:center;font-family:"IBM Plex Mono",monospace;font-size:14px;font-weight:600}
.bar nav{display:flex;gap:16px;font-size:15px}.bar nav a{color:#4a5568;text-decoration:none}.bar nav a[aria-current]{color:#14295c;font-weight:700}
main{max-width:820px;margin:0 auto;padding:36px 20px 80px}
h1{font-size:clamp(28px,4vw,38px);line-height:1.25;margin:0 0 6px}
.meta{color:#6b7685;font-size:14px;margin-bottom:24px}
h2{font-size:21px;margin:34px 0 8px;padding-top:6px;border-top:1px solid #edf1f6}
h3{font-size:17px;margin:20px 0 4px}
p,li{color:#2d3748}ul,ol{padding-left:22px}li{margin:4px 0}
.box{background:#f4f6f9;border:1px solid #dce2ea;border-radius:12px;padding:14px 18px;margin:16px 0}
table{width:100%;border-collapse:collapse;font-size:15px;margin:10px 0}th,td{border:1px solid #dce2ea;padding:8px 10px;text-align:left;vertical-align:top}th{background:#eef2f7}
.toc{columns:2;column-gap:28px;font-size:15px;padding-left:20px}@media(max-width:600px){.toc{columns:1}.wrap-table{overflow-x:auto}}
a{color:#14295c}
footer{border-top:1px solid #dce2ea;color:#6b7685;font-size:14px}footer div{max-width:820px;margin:0 auto;padding:22px 20px;display:flex;gap:10px 22px;flex-wrap:wrap}