:root{--seo-ink:#1f2922;--seo-muted:#647069;--seo-accent:#286b48;--seo-soft:#eef6ef;--seo-line:#dce8df;--seo-card:#fff}
*{box-sizing:border-box}body{margin:0;color:var(--seo-ink);background:#f8faf8;font-family:'Sarabun',sans-serif;line-height:1.75}.seo-wrap{width:min(1040px,calc(100% - 36px));margin:0 auto}.seo-nav{position:sticky;top:0;z-index:10;border-bottom:1px solid rgba(31,41,34,.1);background:rgba(255,255,255,.94);backdrop-filter:blur(12px)}.seo-nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px}.seo-brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none;font-family:Inter,sans-serif;font-weight:800}.seo-brand img{width:38px;height:38px}.seo-links{display:flex;align-items:center;gap:18px}.seo-links a{color:#3d5547;text-decoration:none;font-size:.9rem;font-weight:700}.seo-links a:hover{color:var(--seo-accent)}.seo-hero{padding:76px 0 54px;background:radial-gradient(circle at 92% 0,rgba(101,177,121,.2),transparent 32%),linear-gradient(145deg,#f0f7f1,#fff 60%)}.seo-kicker{display:inline-flex;align-items:center;gap:7px;padding:6px 11px;border-radius:999px;color:#1f6b45;background:#dff0e2;font:800 .74rem Inter,sans-serif;letter-spacing:.04em}.seo-kicker svg{width:14px}.seo-hero h1{max-width:820px;margin:15px 0 13px;font-size:clamp(2rem,5vw,3.45rem);line-height:1.18;letter-spacing:-.035em}.seo-hero p{max-width:760px;margin:0;color:var(--seo-muted);font-size:1.08rem}.seo-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:25px}.seo-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 15px;border:1px solid #286b48;border-radius:10px;color:#fff;background:#286b48;text-decoration:none;font-weight:800}.seo-btn--plain{color:#286b48;background:#fff}.seo-section{padding:46px 0}.seo-section--soft{background:var(--seo-soft)}.seo-section h2{margin:0 0 12px;font-size:clamp(1.45rem,3vw,2rem);line-height:1.3}.seo-section h3{margin:0 0 6px;font-size:1.1rem}.seo-section p{margin:0 0 14px;color:#4e5b53}.seo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:20px}.seo-card{padding:20px;border:1px solid var(--seo-line);border-radius:16px;background:var(--seo-card);box-shadow:0 7px 18px rgba(36,66,43,.045)}.seo-card-icon{display:grid;place-items:center;width:38px;height:38px;margin-bottom:12px;border-radius:11px;color:#286b48;background:#e5f3e7}.seo-card-icon svg{width:20px}.seo-steps{display:grid;gap:12px;counter-reset:step;margin-top:20px}.seo-step{position:relative;padding:17px 18px 17px 64px;border-left:3px solid #76b383;border-radius:0 13px 13px 0;background:#fff}.seo-step::before{counter-increment:step;content:counter(step);position:absolute;top:17px;left:17px;display:grid;place-items:center;width:28px;height:28px;border-radius:50%;color:#fff;background:#286b48;font:800 .84rem Inter,sans-serif}.seo-list{margin:12px 0;padding-left:22px;color:#4e5b53}.seo-list li{margin:6px 0}.seo-note{padding:18px 20px;border-left:4px solid #d79b2e;border-radius:0 12px 12px 0;background:#fff9eb;color:#66542a}.seo-faq{display:grid;gap:10px}.seo-faq details{padding:0 17px;border:1px solid var(--seo-line);border-radius:12px;background:#fff}.seo-faq summary{padding:14px 0;cursor:pointer;font-weight:800}.seo-faq p{padding-bottom:10px}.seo-related{display:flex;flex-wrap:wrap;gap:9px}.seo-related a{padding:8px 12px;border:1px solid #bed9c3;border-radius:999px;color:#23623f;background:#f7fcf7;text-decoration:none;font-size:.88rem;font-weight:700}.seo-footer{padding:28px 0;color:#6b776f;background:#1f2922}.seo-footer a{color:#e4f4e7;text-decoration:none}@media(max-width:720px){.seo-wrap{width:min(100% - 28px,1040px)}.seo-links{gap:11px}.seo-links a{font-size:.78rem}.seo-hero{padding:50px 0 38px}.seo-grid{grid-template-columns:1fr}.seo-section{padding:34px 0}.seo-hero p{font-size:1rem}}