:root{
  --blue-900:#0b2a4a;
  --blue-800:#0d3b66;
  --blue-700:#0f5aa8;
  --blue-600:#1473d1;
  --blue-500:#2f8be6;
  --blue-100:#e3f0fd;
  --blue-50:#f2f8ff;
  --ink:#1b2a3a;
  --muted:#5b6b7c;
  --line:#d9e6f4;
  --white:#fff;
  --radius:16px;
  --shadow:0 10px 30px rgba(15,90,168,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans Thai','Prompt',system-ui,-apple-system,'Segoe UI',sans-serif;color:var(--ink);background:var(--white);line-height:1.75;font-size:16.5px}
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,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}
.brand{display:flex;align-items:center;gap:12px;color:var(--blue-800);font-weight:700;line-height:1.2}
.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--blue-700),var(--blue-500));display:grid;place-items:center;flex:none}
.brand-mark svg{width:24px;height:24px;fill:#fff}
.brand small{display:block;font-weight:500;font-size:.72rem;color:var(--muted)}
#menu{display:flex;gap:6px;align-items:center}
#menu a{padding:8px 14px;border-radius:999px;color:var(--ink);font-weight:500;font-size:.97rem}
#menu a:hover{background:var(--blue-50);color:var(--blue-700)}
#menu a.active{background:var(--blue-100);color:var(--blue-700)}
.menu-btn{display:none;background:var(--blue-50);border:1px solid var(--line);border-radius:10px;width:44px;height:44px;font-size:1.3rem;color:var(--blue-800);cursor:pointer}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;font-weight:600;border:2px solid transparent;cursor:pointer;font-family:inherit;font-size:1rem;transition:.2s}
.btn-primary{background:var(--blue-700);color:#fff}
.btn-primary:hover{background:var(--blue-600);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.7)}
.btn-ghost:hover{background:#fff;color:var(--blue-700)}
.btn-outline{border-color:var(--blue-700);color:var(--blue-700);background:#fff}
.btn-outline:hover{background:var(--blue-700);color:#fff}

/* Hero */
.hero{position:relative;color:#fff;background:linear-gradient(135deg,var(--blue-800),var(--blue-600));overflow:hidden}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.35}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,42,74,.88) 10%,rgba(15,90,168,.55) 100%)}
.hero .container{position:relative;z-index:2;padding:110px 0 120px;max-width:1140px}
.hero .eyebrow{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);padding:5px 16px;border-radius:999px;font-size:.88rem;margin-bottom:18px}
.hero h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.25;max-width:760px;margin-bottom:18px}
.hero p{max-width:620px;font-size:1.1rem;opacity:.95;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.page-hero{background:linear-gradient(135deg,var(--blue-800),var(--blue-600));color:#fff;padding:64px 0;text-align:center}
.page-hero h1{font-size:clamp(1.8rem,4vw,2.6rem);margin-bottom:8px}
.page-hero p{opacity:.92;max-width:640px;margin:0 auto}

/* Sections */
section{padding:84px 0}
.bg-soft{background:var(--blue-50)}
.section-head{text-align:center;max-width:680px;margin:0 auto 48px}
.section-head .tag{color:var(--blue-600);font-weight:700;font-size:.9rem;letter-spacing:.04em}
.section-head h2{font-size:clamp(1.6rem,3.4vw,2.2rem);color:var(--blue-800);margin:6px 0 12px;line-height:1.35}
.section-head p{color:var(--muted)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split h2{font-size:clamp(1.5rem,3vw,2.1rem);color:var(--blue-800);line-height:1.35;margin-bottom:16px}
.split p{color:var(--muted);margin-bottom:14px}
.photo{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:linear-gradient(135deg,var(--blue-100),#cfe4fa);aspect-ratio:4/3}
.photo img{width:100%;height:100%;object-fit:cover}
.checks{list-style:none;margin:18px 0 26px}
.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}

/* Cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.card .thumb{aspect-ratio:16/10;background:linear-gradient(135deg,var(--blue-100),#cfe4fa);overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .body{padding:22px 24px 26px}
.card h3{color:var(--blue-800);font-size:1.2rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.97rem}

/* Features */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 22px;text-align:center}
.feature .ico{width:58px;height:58px;border-radius:16px;margin:0 auto 14px;background:var(--blue-100);display:grid;place-items:center;font-size:1.6rem}
.feature h3{color:var(--blue-800);font-size:1.05rem;margin-bottom:6px}
.feature p{color:var(--muted);font-size:.93rem}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:s}
.step{position:relative;padding:26px 22px;border-radius:var(--radius);background:#fff;border:1px solid var(--line)}
.step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--blue-700);color:#fff;font-weight:700;margin-bottom:12px}
.step h3{color:var(--blue-800);font-size:1.05rem;margin-bottom:4px}
.step p{color:var(--muted);font-size:.93rem}

/* CTA */
.cta{background:linear-gradient(135deg,var(--blue-800),var(--blue-600));color:#fff;text-align:center;padding:72px 0}
.cta h2{font-size:clamp(1.5rem,3.4vw,2.2rem);margin-bottom:10px}
.cta p{opacity:.92;margin-bottom:26px}
.cta .hero-actions{justify-content:center}
.cta .btn-primary{background:#fff;color:var(--blue-700)}
.cta .btn-primary:hover{background:var(--blue-100);color:var(--blue-800)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.info-card h2{color:var(--blue-800);font-size:1.3rem;margin-bottom:18px}
.info-row{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
.info-row:last-child{border-bottom:0}
.info-row .ico{flex:none;width:44px;height:44px;border-radius:12px;background:var(--blue-100);display:grid;place-items:center;font-size:1.2rem}
.info-row b{display:block;color:var(--blue-800)}
.info-row span,.info-row a{color:var(--muted);word-break:break-word}
.info-row a:hover{color:var(--blue-600)}

/* Prose (privacy) */
.prose{max-width:820px;margin-inline:auto}
.prose h2{color:var(--blue-800);font-size:1.3rem;margin:34px 0 10px}
.prose p,.prose li{color:#3b4a5a}
.prose ul{padding-left:22px;margin:8px 0 12px}
.prose .updated{color:var(--muted);font-size:.92rem}

/* Footer */
.site-footer{background:var(--blue-900);color:#cfe0f3;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.3fr;gap:40px;padding-bottom:36px}
.site-footer h4{color:#fff;margin-bottom:14px;font-size:1.05rem}
.site-footer a{color:#cfe0f3}
.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px;font-size:.96rem}
.site-footer p{font-size:.95rem}
.copyright{border-top:1px solid rgba(255,255,255,.12);text-align:center;padding:18px 0;font-size:.9rem;color:#9fb8d4}

@media(max-width:960px){
  .grid-3,.features,.steps{grid-template-columns:repeat(2,1fr)}
  .split,.contact-grid{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:720px){
  section{padding:60px 0}
  .menu-btn{display:block}
  #menu{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;align-items:stretch;padding:12px 4%;border-bottom:1px solid var(--line);box-shadow:0 14px 24px rgba(15,90,168,.1)}
  #menu.open{display:flex}
  #menu a{padding:12px 14px}
  .hero .container{padding:80px 0 90px}
  .grid-3,.features,.steps,.footer-grid{grid-template-columns:1fr}
}