:root{
  --orange:#f4481f; --orange-d:#d93a14; --orange-l:#fde9e3;
  --navy:#2b3a4a; --text:#56636f; --bg:#f4f6f8; --white:#fff; --line:#e6eaee;
  --radius:10px; --shadow:0 10px 30px rgba(43,58,74,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Sarabun','Prompt',system-ui,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:min(1120px,92%);margin:0 auto}
h1,h2,h3{color:var(--navy);line-height:1.25;font-weight:700}

/* decorative */
.dots{position:absolute;width:110px;height:110px;background-image:radial-gradient(var(--orange) 3px,transparent 3.5px);background-size:22px 22px;opacity:.9;pointer-events:none}
.dots.light{background-image:radial-gradient(#f6a995 3px,transparent 3.5px);opacity:.7}
.blob{position:absolute;background:var(--orange);pointer-events:none}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(244,246,248,.92);backdrop-filter:blur(8px);border-bottom:1px solid transparent;transition:.2s}
header.scrolled{border-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;color:var(--navy);line-height:1.2}
.brand small{display:block;font-weight:400;font-size:.72rem;color:var(--text)}
.brand .mark{width:44px;height:44px}
nav ul{display:flex;gap:30px;list-style:none;font-size:.95rem}
nav a:hover,nav a.active{color:var(--orange)}
.burger{display:none;background:none;border:0;font-size:1.7rem;color:var(--navy);cursor:pointer}

/* buttons */
.btn{display:inline-block;background:var(--orange);color:#fff;padding:12px 28px;border-radius:4px;font-weight:600;border:0;cursor:pointer;font-family:inherit;font-size:1rem;transition:.2s;box-shadow:0 8px 18px rgba(244,72,31,.25)}
.btn:hover{background:var(--orange-d);transform:translateY(-2px)}
.btn.ghost{background:transparent;color:var(--orange);box-shadow:none;border:1.5px solid var(--orange)}
.btn.ghost:hover{background:var(--orange);color:#fff}

/* hero */
.hero{position:relative;overflow:hidden;padding:70px 0 90px}
.hero .blob.b1{width:520px;height:520px;border-radius:50%;left:-260px;top:-140px}
.hero .blob.b2{width:300px;height:300px;border-radius:60px;right:-150px;bottom:-60px}
.hero .grid{position:relative;display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(2.2rem,5vw,3.6rem);margin-bottom:22px}
.hero h1 span{color:var(--orange)}
.hero p{max-width:460px;margin-bottom:30px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-art{position:relative;display:flex;justify-content:center}
.hero-art .card-bg{position:absolute;width:78%;height:82%;right:6%;bottom:-4%;background:var(--orange-l);border-radius:24px}
.hero-art svg,.hero-art img{position:relative;width:min(440px,100%);filter:drop-shadow(0 20px 30px rgba(43,58,74,.18))}
.hero-art img{border-radius:24px;aspect-ratio:1;object-fit:cover}
.hero .dots.d1{left:48%;top:30px}
.hero .dots.d2{right:8%;bottom:30px}

/* trust strip */
.strip{background:#fff;box-shadow:var(--shadow);border-radius:var(--radius);margin-top:-50px;position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);text-align:center}
.strip div{padding:26px 12px;border-right:1px solid var(--line)}
.strip div:last-child{border:0}
.strip b{display:block;color:var(--navy);font-size:1.2rem}
.strip span{font-size:.85rem}

/* sections */
section{padding:90px 0;position:relative}
.sec-head{text-align:left;margin-bottom:40px;position:relative}
.sec-head .num{font-size:5rem;font-weight:800;color:#e3e8ec;line-height:1;position:absolute;left:-6px;top:-30px;z-index:0}
.sec-head h2{position:relative;z-index:1;font-size:clamp(1.7rem,3.4vw,2.3rem)}
.sec-head p{position:relative;z-index:1;margin-top:8px;max-width:560px}

.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:24px}
.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px)}
.card .thumb{aspect-ratio:4/3;background:var(--orange-l);overflow:hidden;cursor:zoom-in;display:grid;place-items:center}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.card:hover .thumb img{transform:scale(1.05)}
.card .body{padding:20px 22px 24px}
.card h3{font-size:1.1rem;margin-bottom:6px}
.card p{font-size:.92rem;white-space:pre-line}
.card .date{font-size:.78rem;color:var(--orange);font-weight:600;margin-bottom:4px}
.card .ico{width:46px;height:46px;border-radius:10px;background:var(--orange);color:#fff;display:grid;place-items:center;margin-bottom:14px;font-size:1.3rem}
.card.static{padding:28px 24px}
.empty{color:#8a96a1;padding:30px 0}

#activities{background:#fff}
#activities .card{background:var(--bg);box-shadow:none;border:1px solid var(--line)}

/* about */
.about{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about ul{list-style:none;margin-top:18px}
.about li{padding-left:28px;position:relative;margin-bottom:8px}
.about li::before{content:"";position:absolute;left:0;top:.6em;width:10px;height:10px;border-radius:50%;background:var(--orange)}
.cert-box{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:18px;text-align:center}
.cert-box div{padding:22px 10px;border-radius:8px;background:var(--bg)}
.cert-box b{display:block;font-size:1.4rem;color:var(--orange)}

/* contact */
.contact{background:var(--navy);color:#cbd5de;overflow:hidden}
.contact h2{color:#fff}
.contact .grid{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;position:relative}
.contact dl{margin-top:26px}
.contact dt{color:#fff;font-weight:600;margin-top:16px}
.contact a{color:#ffb4a2}
.contact a:hover{text-decoration:underline}
.map-card{background:rgba(255,255,255,.06);border-radius:var(--radius);padding:34px;display:flex;flex-direction:column;gap:16px;justify-content:center}
.contact .blob{width:300px;height:300px;border-radius:50%;right:-120px;top:-120px;opacity:.9}

footer{background:#222f3c;color:#8fa0b0;text-align:center;padding:22px;font-size:.85rem}

/* lightbox */
.lb{position:fixed;inset:0;background:rgba(15,22,30,.88);display:none;place-items:center;z-index:100;padding:20px;cursor:zoom-out}
.lb.on{display:grid}
.lb img{max-height:88vh;border-radius:8px}

@media(max-width:860px){
  .hero .grid,.about,.contact .grid{grid-template-columns:1fr}
  .hero-art{order:-1}
  .strip{grid-template-columns:1fr 1fr}
  .strip div:nth-child(2){border-right:0}
  .strip div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .burger{display:block}
  nav ul{position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:8px 0;display:none;box-shadow:var(--shadow)}
  nav ul.open{display:flex}
  nav li a{display:block;padding:14px 5%}
  section{padding:64px 0}
}