:root{font-family:"IBM Plex Sans Thai",system-ui,sans-serif;color:#13213a;background:#f7f9fd}*{box-sizing:border-box}body{margin:0}a{color:inherit}.seo-header{position:sticky;top:0;z-index:2;display:flex;align-items:center;gap:24px;min-height:72px;padding:12px clamp(20px,5vw,72px);color:#fff;background:rgba(36,76,143,.96);backdrop-filter:blur(16px)}.seo-brand{display:inline-flex;align-items:center;min-height:44px;font-family:"Chonburi",serif;font-size:28px;text-decoration:none}.seo-header nav{display:flex;gap:20px;margin-inline:auto}.seo-header nav a,.seo-open{display:inline-flex;align-items:center;min-height:44px;text-decoration:none}.seo-open,.seo-primary{border-radius:999px;background:#fff;color:#244c8f;font-weight:700;padding:10px 18px}.seo-hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(260px,.9fr);align-items:center;gap:clamp(28px,6vw,80px);max-width:1160px;margin:0 auto;padding:clamp(48px,8vw,96px) clamp(20px,5vw,72px)}.seo-hero img{width:100%;max-height:520px;object-fit:cover;border-radius:32px;box-shadow:0 24px 60px rgba(25,55,104,.18)}.seo-eyebrow{color:#3061b5;font-size:15px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.seo-hero h1{max-width:760px;margin:12px 0;font-size:clamp(38px,7vw,72px);line-height:1.08;overflow-wrap:anywhere}.seo-lede{max-width:680px;color:#4c5b72;font-size:clamp(18px,2.4vw,24px);line-height:1.65}.seo-primary{display:inline-flex;align-items:center;min-height:48px;margin-top:12px;background:#3061b5;color:#fff;text-decoration:none}.seo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;max-width:1160px;margin:0 auto;padding:0 clamp(20px,5vw,72px) 88px}.seo-card{min-width:0;padding:28px;border:1px solid #dbe3f0;border-radius:24px;background:#fff}.seo-card h2{margin:0 0 12px;font-size:24px;overflow-wrap:anywhere}.seo-card p,footer p{color:#536178;line-height:1.7;overflow-wrap:anywhere}footer{padding:36px clamp(20px,5vw,72px);color:#fff;background:#132f5c}footer p{max-width:780px;color:#dce7fa}@media(max-width:760px){.seo-header{gap:14px}.seo-header nav{display:none}.seo-open{margin-inline-start:auto}.seo-hero{grid-template-columns:minmax(0,1fr);padding-top:40px}.seo-hero img{max-height:360px}.seo-grid{grid-template-columns:minmax(0,1fr);padding-bottom:56px}}@media(max-width:320px){.seo-header{position:static;flex-wrap:wrap;padding:10px 12px}.seo-open{width:100%;justify-content:center}.seo-hero{padding-inline:12px}.seo-grid{padding-inline:12px}.seo-card{padding:20px}footer{padding-inline:12px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}