*{box-sizing:border-box}
html{font-family:system-ui,-apple-system,"Noto Sans Thai",Tahoma,sans-serif;line-height:1.85;color:#18212b;background:#f5f7fa}
body{margin:0}
a{color:#075fc7;text-decoration:none}
.wrap{width:min(1120px,calc(100% - 32px));margin:auto}
header{background:#111827}
.top{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{color:white;font-size:20px;font-weight:800}
.nav{display:flex;gap:16px;flex-wrap:wrap}.nav a{color:#e5edf7;font-size:14px}
.crumb{padding:22px 0;color:#667085;font-size:13px}
.hero,.article{background:#fff;border:1px solid #e2e8f0;border-radius:22px}
.hero{padding:48px;margin-bottom:24px}
.hero h1{font-size:clamp(34px,5vw,56px);line-height:1.15;margin:0 0 20px}
.lead{font-size:18px;color:#475467}
.article{max-width:920px;margin:auto;padding:50px}
.article h2{font-size:28px;line-height:1.35;margin:48px 0 15px}
.article h3{font-size:21px;line-height:1.4;margin-top:30px}
.article p{margin:0 0 18px}
.article ul,.article ol{padding-left:25px}
.article li{margin-bottom:8px}
.toc{background:#f7f9fc;border-radius:15px;padding:22px 26px;margin-bottom:36px}
table{width:100%;border-collapse:collapse;margin:24px 0;display:block;overflow-x:auto}
th,td{border:1px solid #dfe5ec;padding:11px 13px;text-align:left;vertical-align:top}
.note{background:#f7f9fc;border-left:4px solid #075fc7;padding:20px 24px;margin:32px 0}
.faq,.related{border-top:1px solid #e5e9ef;margin-top:44px;padding-top:22px}
.related ul{display:grid;grid-template-columns:1fr 1fr;gap:9px 28px}
footer{background:#111827;color:#cbd5e1;margin-top:60px;padding:38px 0}
@media(max-width:720px){.top{flex-direction:column;align-items:flex-start;padding:16px 0}.hero,.article{padding:26px}.related ul{grid-template-columns:1fr}}