:root{
  --navy:#0b1b2b;
  --navy-2:#12293f;
  --cyan:#19b6d9;
  --cyan-dark:#0e7f9c;
  --amber:#f6a821;
  --ink:#16222e;
  --muted:#5d6f7f;
  --line:#e2e9ef;
  --bg:#f6f9fb;
  --white:#fff;
  --radius:14px;
  --shadow:0 10px 30px rgba(11,27,43,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:"Noto Sans Thai","Sarabun",system-ui,-apple-system,Segoe UI,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.85;font-size:17px;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--cyan-dark);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}

/* topbar */
.topbar{background:var(--navy);color:#cfe3ee;font-size:14px}
.topbar .wrap{display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:space-between;padding:8px 20px}
.topbar a{color:#cfe3ee}

/* header */
header.site{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px}
.brand{display:flex;align-items:center;gap:12px}
.brand .mark{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--cyan),var(--navy));display:grid;place-items:center;color:#fff;font-weight:800;font-size:18px}
.brand b{display:block;font-size:17px;line-height:1.3;color:var(--navy)}
.brand span{font-size:12.5px;color:var(--muted)}
nav.main ul{display:flex;flex-wrap:wrap;gap:2px;list-style:none;margin:0;padding:0}
nav.main a{display:block;padding:9px 12px;border-radius:9px;color:var(--navy);font-size:15px;font-weight:500}
nav.main a:hover{background:#eef6f9;text-decoration:none}
nav.main a.active{background:var(--navy);color:#fff}
.btn{display:inline-block;padding:12px 22px;border-radius:999px;font-weight:700;text-align:center}
.btn-primary{background:var(--cyan);color:#fff!important}
.btn-primary:hover{background:var(--cyan-dark);text-decoration:none}
.btn-amber{background:var(--amber);color:#3a2600!important}
.btn-ghost{border:1.5px solid rgba(255,255,255,.6);color:#fff!important}
.btn-outline{border:1.5px solid var(--cyan);color:var(--cyan-dark)!important}

/* hero */
.hero{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.hero img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.34}
.hero .inner{position:relative;padding:88px 0 78px;max-width:760px}
.hero h1{font-size:clamp(28px,4.4vw,46px);line-height:1.35;margin:0 0 16px}
.hero p.lead{font-size:19px;color:#d6e7f0}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 26px;list-style:none;padding:0}
.badges li{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);padding:6px 14px;border-radius:999px;font-size:14px}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px}

.page-head{background:linear-gradient(120deg,var(--navy),var(--navy-2));color:#fff;padding:54px 0}
.page-head h1{margin:0 0 8px;font-size:clamp(26px,3.6vw,38px)}
.page-head p{margin:0;color:#cfe3ee}

section{padding:58px 0}
section.alt{background:var(--white)}
h2{font-size:clamp(23px,2.8vw,31px);line-height:1.4;color:var(--navy);margin:0 0 14px}
h3{font-size:20px;color:var(--navy);margin:26px 0 8px}
h4{font-size:17.5px;color:var(--navy);margin:20px 0 6px}
.sub{color:var(--muted);max-width:820px}
p{margin:0 0 14px}
ul.check{list-style:none;padding:0;margin:0 0 16px}
ul.check li{padding-left:28px;position:relative;margin-bottom:9px}
ul.check li:before{content:"✔";position:absolute;left:0;color:var(--cyan);font-weight:700}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card h3{margin-top:0}
.card img{border-radius:10px;margin-bottom:14px}
.media{display:grid;grid-template-columns:1.05fr 1fr;gap:30px;align-items:center}
.media img{border-radius:var(--radius);box-shadow:var(--shadow)}
.stat{background:var(--navy);color:#fff;border-radius:var(--radius);padding:22px;text-align:center}
.stat b{display:block;font-size:30px;color:var(--cyan)}
.note{background:#eef8fb;border-left:4px solid var(--cyan);padding:16px 18px;border-radius:10px;margin:18px 0}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:10px;overflow:hidden;font-size:15.5px}
th,td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:var(--navy);color:#fff;font-weight:600}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gallery figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.gallery figcaption{padding:10px 12px;font-size:14px;color:var(--muted)}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:12px}
details summary{font-weight:600;color:var(--navy);cursor:pointer}
.cta-band{background:linear-gradient(120deg,var(--cyan-dark),var(--navy));color:#fff;text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:#dcecf3}
form .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:block;font-size:14.5px;font-weight:600;color:var(--navy);margin-bottom:5px}
input,select,textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff;margin-bottom:14px}
footer.site{background:var(--navy);color:#c7dbe7;padding:52px 0 22px;font-size:15px}
footer.site h4{color:#fff;margin:0 0 12px}
footer.site a{color:#c7dbe7}
footer.site .grid{gap:28px}
.copy{border-top:1px solid rgba(255,255,255,.14);margin-top:28px;padding-top:16px;font-size:13.5px;color:#9fbccd}
.callbar{position:fixed;left:0;right:0;bottom:0;background:var(--amber);color:#3a2600;text-align:center;padding:11px;font-weight:700;z-index:60;display:none}
.callbar a{color:#3a2600}
@media(max-width:900px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .media{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
  nav.main a{padding:8px 9px;font-size:14px}
}
@media(max-width:600px){
  body{font-size:16.5px}
  .g2,.g3,.g4,.gallery,form .row{grid-template-columns:1fr}
  body{padding-bottom:48px}
  .callbar{display:block}
}