:root{
  --blue-900:#0a2a5e;
  --blue-800:#0d3b8c;
  --blue-700:#1456c8;
  --blue-600:#1e6fe8;
  --blue-500:#3b8cf5;
  --blue-100:#e3efff;
  --blue-50:#f2f7ff;
  --ink:#16233b;
  --muted:#5b6b86;
  --white:#fff;
  --radius:18px;
  --shadow:0 10px 30px rgba(20,86,200,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Prompt','Noto Sans Thai',system-ui,sans-serif;
  color:var(--ink);background:var(--white);line-height:1.75;font-size:16px;
}
img{max-width:100%;display:block}
a{color:var(--blue-700);text-decoration:none}
.container{width:min(1140px,92%);margin-inline:auto}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--blue-100)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--blue-900);font-size:1.15rem}
.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--blue-500),var(--blue-800));color:#fff;display:grid;place-items:center;font-weight:800;font-size:.95rem}
.nav ul{display:flex;gap:6px;list-style:none}
.nav ul a{padding:8px 16px;border-radius:999px;color:var(--ink);font-weight:500;font-size:.95rem;transition:.2s}
.nav ul a:hover,.nav ul a.active{background:var(--blue-100);color:var(--blue-700)}
.menu-btn{display:none;background:none;border:0;font-size:1.7rem;color:var(--blue-800);cursor:pointer}

/* Hero */
.hero{position:relative;color:#fff;background:linear-gradient(135deg,var(--blue-900),var(--blue-700));overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:var(--hero-img) center/cover no-repeat;opacity:.28}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,42,94,.92) 30%,rgba(20,86,200,.45))}
.hero .container{position:relative;z-index:2;padding:110px 0 120px;max-width:1140px}
.hero .tag{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);padding:6px 16px;border-radius:999px;font-size:.88rem;margin-bottom:18px}
.hero h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.25;font-weight:700;max-width:720px}
.hero p{max-width:620px;margin-top:18px;font-size:1.08rem;opacity:.93}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.btn{display:inline-block;padding:13px 28px;border-radius:999px;font-weight:600;font-family:inherit;transition:.2s;border:2px solid transparent;cursor:pointer;font-size:1rem}
.btn-primary{background:#fff;color:var(--blue-800)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.25)}
.btn-ghost{border-color:rgba(255,255,255,.7);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14)}
.btn-blue{background:var(--blue-600);color:#fff}
.btn-blue:hover{background:var(--blue-700);transform:translateY(-2px)}

.page-hero{position:relative;color:#fff;background:linear-gradient(135deg,var(--blue-900),var(--blue-700));text-align:center;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:var(--hero-img) center/cover no-repeat;opacity:.22}
.page-hero .container{position:relative;z-index:2;padding:80px 0}
.page-hero h1{font-size:clamp(1.8rem,4vw,2.6rem)}
.page-hero p{opacity:.9;margin-top:8px}

/* Sections */
section{padding:84px 0}
.bg-soft{background:var(--blue-50)}
.sec-head{text-align:center;max-width:680px;margin:0 auto 48px}
.eyebrow{color:var(--blue-600);font-weight:600;letter-spacing:.04em;font-size:.9rem}
.sec-head h2,.split h2{font-size:clamp(1.6rem,3.2vw,2.2rem);color:var(--blue-900);line-height:1.35;margin:6px 0 12px}
.sec-head p{color:var(--muted)}
.grid{display:grid;gap:26px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;border:1px solid var(--blue-100);transition:.25s}
.card:hover{transform:translateY(-5px)}
.card img{width:100%;height:210px;object-fit:cover;background:linear-gradient(135deg,var(--blue-100),var(--blue-500))}
.card-body{padding:24px}
.card h3{color:var(--blue-900);font-size:1.15rem;margin-bottom:6px}
.card p{color:var(--muted);font-size:.96rem}
.icon{width:52px;height:52px;border-radius:14px;background:var(--blue-100);color:var(--blue-700);display:grid;place-items:center;font-size:1.5rem;margin-bottom:14px}
.card.pad{padding:28px}

.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split img{border-radius:24px;box-shadow:var(--shadow);width:100%;height:420px;object-fit:cover;background:linear-gradient(135deg,var(--blue-100),var(--blue-500))}
.split p{color:var(--muted);margin-bottom:14px}
.checks{list-style:none;margin-top:16px}
.checks li{padding-left:34px;position:relative;margin-bottom:10px}
.checks li::before{content:"✓";position:absolute;left:0;top:2px;width:24px;height:24px;border-radius:50%;background:var(--blue-600);color:#fff;font-size:.8rem;display:grid;place-items:center}

.cta{background:linear-gradient(135deg,var(--blue-800),var(--blue-600));color:#fff;text-align:center;border-radius:28px;padding:56px 24px}
.cta h2{font-size:clamp(1.5rem,3vw,2rem);margin-bottom:10px}
.cta p{opacity:.92;margin-bottom:24px}
.cta .btns{justify-content:center;margin-top:0}

.steps{counter-reset:s}
.step{position:relative;padding:28px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--blue-100)}
.step::before{counter-increment:s;content:counter(s);width:40px;height:40px;border-radius:50%;background:var(--blue-600);color:#fff;display:grid;place-items:center;font-weight:700;margin-bottom:12px}
.step h3{color:var(--blue-900);margin-bottom:4px}
.step p{color:var(--muted);font-size:.95rem}

/* Contact */
.contact-item{display:flex;gap:16px;align-items:flex-start}
.contact-item .icon{flex:none;margin:0}
.contact-item h3{color:var(--blue-900);font-size:1.05rem}
.contact-item p,.contact-item a{color:var(--muted);font-size:.97rem;display:block}
.contact-item a:hover{color:var(--blue-700)}
.map{border:0;width:100%;height:380px;border-radius:var(--radius);box-shadow:var(--shadow)}

/* Privacy */
.doc{max-width:860px;margin-inline:auto}
.doc h2{color:var(--blue-900);font-size:1.3rem;margin:34px 0 10px}
.doc p,.doc li{color:#3a4a66}
.doc ul{padding-left:22px;margin:8px 0}
.doc .updated{color:var(--muted);font-size:.9rem}

/* Footer */
.site-footer{background:var(--blue-900);color:#cfe0ff;padding:60px 0 0}
.foot{display:grid;grid-template-columns:1.5fr 1fr 1.3fr;gap:40px}
.site-footer h4{color:#fff;margin-bottom:14px}
.site-footer a{color:#cfe0ff}
.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px;font-size:.95rem}
.site-footer p{font-size:.95rem}
.copy{margin-top:44px;border-top:1px solid rgba(255,255,255,.15);padding:20px 0;text-align:center;font-size:.9rem;color:#9fbbea}

@media(max-width:900px){
  .g3,.g4,.g2,.split,.foot{grid-template-columns:1fr}
  .g4{grid-template-columns:repeat(2,1fr)}
  .split{gap:30px}
  .split img{height:300px}
  .menu-btn{display:block}
  .nav ul{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:14px 4%;border-bottom:1px solid var(--blue-100);box-shadow:var(--shadow)}
  .nav ul.open{display:flex}
  section{padding:60px 0}
  .hero .container{padding:80px 0 90px}
}
@media(max-width:560px){.g4{grid-template-columns:1fr}}