:root{
  --blue-900:#0a2540;
  --blue-800:#0d3b72;
  --blue-700:#1055a8;
  --blue-600:#1a6fd1;
  --blue-500:#2d86ee;
  --blue-100:#e6f0fd;
  --blue-50:#f3f8ff;
  --ink:#1b2a3b;
  --muted:#5b6b7e;
  --line:#dce6f2;
  --white:#fff;
  --radius:16px;
  --shadow:0 10px 30px rgba(13,59,114,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Sarabun','Noto Sans Thai',system-ui,-apple-system,'Segoe UI',sans-serif;color:var(--ink);line-height:1.75;background:var(--white);font-size:17px}
img{max-width:100%;display:block}
a{color:var(--blue-700);text-decoration:none}
a:hover{color:var(--blue-500)}
.container{width:min(1140px,92%);margin-inline:auto}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem;color:var(--blue-800)}
.brand-mark{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--blue-600),var(--blue-800));color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.15rem}
.menu{display:flex;list-style:none;gap:6px;align-items:center}
.menu a{display:block;padding:8px 16px;border-radius:999px;color:var(--ink);font-weight:500}
.menu a:hover{background:var(--blue-50);color:var(--blue-700)}
.menu a.active{background:var(--blue-100);color:var(--blue-800);font-weight:600}
.menu a.cta{background:var(--blue-700);color:#fff}
.menu a.cta:hover{background:var(--blue-800)}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;cursor:pointer;font-size:1.4rem;color:var(--blue-800)}

/* Hero */
.hero{position:relative;color:#fff;background:var(--blue-900) center/cover no-repeat;isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,37,64,.92) 0%,rgba(13,59,114,.78) 50%,rgba(26,111,209,.35) 100%);z-index:-1}
.hero .container{padding:110px 0 120px;max-width:1140px}
.hero.small .container{padding:80px 0 84px}
.eyebrow{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);padding:4px 16px;border-radius:999px;font-size:.92rem;margin-bottom:18px}
.hero h1{font-size:clamp(2rem,4.6vw,3.4rem);line-height:1.25;margin-bottom:18px;max-width:760px}
.hero p{font-size:1.15rem;max-width:620px;opacity:.95;margin-bottom:30px}
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-block;padding:13px 28px;border-radius:999px;font-weight:600;border:2px solid transparent;transition:.2s;cursor:pointer;font-family:inherit;font-size:1rem}
.btn-primary{background:#fff;color:var(--blue-800)}
.btn-primary:hover{background:var(--blue-100);color:var(--blue-800)}
.btn-outline{border-color:rgba(255,255,255,.7);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-blue{background:var(--blue-700);color:#fff}
.btn-blue:hover{background:var(--blue-800);color:#fff}

/* Sections */
section{padding:84px 0}
.bg-soft{background:var(--blue-50)}
.section-head{text-align:center;max-width:720px;margin:0 auto 52px}
.section-head .tag{color:var(--blue-600);font-weight:700;letter-spacing:.04em;font-size:.95rem}
.section-head h2{font-size:clamp(1.6rem,3vw,2.3rem);color:var(--blue-900);line-height:1.35;margin:6px 0 12px}
.section-head p{color:var(--muted)}
.grid{display:grid;gap:26px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.icon{width:54px;height:54px;border-radius:14px;background:var(--blue-100);display:grid;place-items:center;font-size:1.6rem;margin-bottom:16px}
.card h3{color:var(--blue-900);font-size:1.18rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.98rem}

.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.reverse .split-img{order:2}
.split-img img{width:100%;height:420px;object-fit:cover;border-radius:22px;box-shadow:var(--shadow);background:linear-gradient(135deg,var(--blue-100),var(--blue-500))}
.split h2{font-size:clamp(1.5rem,2.8vw,2.1rem);color:var(--blue-900);line-height:1.35;margin-bottom:14px}
.split p{color:var(--muted);margin-bottom:14px}
.checks{list-style:none;margin:18px 0 24px}
.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-100);color:var(--blue-700);font-weight:700;font-size:.85rem;display:grid;place-items:center}

.steps{counter-reset:step}
.step{text-align:center;padding:10px 14px}
.step::before{counter-increment:step;content:counter(step);display:grid;place-items:center;width:58px;height:58px;margin:0 auto 14px;border-radius:50%;background:var(--blue-700);color:#fff;font-weight:700;font-size:1.3rem}
.step h3{color:var(--blue-900);font-size:1.1rem;margin-bottom:6px}
.step p{color:var(--muted);font-size:.96rem}

.cta-band{background:linear-gradient(120deg,var(--blue-800),var(--blue-600));color:#fff;text-align:center;border-radius:26px;padding:56px 28px}
.cta-band h2{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:10px}
.cta-band p{opacity:.92;margin-bottom:26px}

.photo-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.photo-strip img{width:100%;height:240px;object-fit:cover;border-radius:18px;background:linear-gradient(135deg,var(--blue-100),var(--blue-500))}

/* Contact */
.contact-card{display:flex;gap:16px;align-items:flex-start}
.contact-card .icon{flex:none;margin:0}
.contact-card h3{margin-bottom:2px}
.contact-card a,.contact-card p{color:var(--ink);font-size:1.02rem}
.contact-card a:hover{color:var(--blue-500)}
.map{border:0;width:100%;height:380px;border-radius:var(--radius);box-shadow:var(--shadow)}

/* Prose */
.prose{max-width:820px;margin-inline:auto}
.prose h2{color:var(--blue-900);font-size:1.4rem;margin:34px 0 10px}
.prose p,.prose li{color:#33465a}
.prose ul{padding-left:24px;margin:8px 0 14px}
.prose .updated{color:var(--muted);font-size:.95rem}

/* Footer */
.site-footer{background:var(--blue-900);color:#c8d8ec;padding:60px 0 0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1.3fr;gap:40px;padding-bottom:40px}
.site-footer h4{color:#fff;margin-bottom:14px;font-size:1.05rem}
.site-footer a{color:#c8d8ec}
.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px}
.site-footer .brand{color:#fff;margin-bottom:12px}
.site-footer p{font-size:.96rem}
.copy{border-top:1px solid rgba(255,255,255,.14);text-align:center;padding:20px 0;font-size:.92rem}

@media (max-width:900px){
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:28px}
  .split.reverse .split-img{order:0}
  .split-img img{height:300px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .photo-strip{grid-template-columns:1fr}
}
@media (max-width:720px){
  body{font-size:16px}
  .burger{display:block}
  .menu{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:14px 4%;border-bottom:1px solid var(--line);box-shadow:0 12px 20px rgba(0,0,0,.06)}
  .menu.open{display:flex}
  .menu a{border-radius:12px}
  section{padding:60px 0}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .hero .container{padding:76px 0 84px}
  .foot-grid{grid-template-columns:1fr}
}