:root{
  --ink:#0b1524;
  --ink-2:#12203a;
  --paper:#f7f8fa;
  --white:#ffffff;
  --line:#e2e6ee;
  --muted:#5c6a80;
  --brand:#d7182a;
  --brand-dark:#a5101f;
  --accent:#f4a300;
  --radius:14px;
  --wrap:1180px;
  --shadow:0 10px 30px rgba(11,21,36,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans Thai","IBM Plex Sans Thai",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.85;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.topbar{background:var(--ink);color:#c9d3e2;font-size:14px}
.topbar .wrap{display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:space-between;padding:8px 20px}
.topbar a{color:#c9d3e2}
header.site{
  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;gap:16px;padding:12px 20px;max-width:var(--wrap);margin:0 auto}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:800;line-height:1.25}
.brand:hover{text-decoration:none}
.brand .mark{
  width:44px;height:44px;border-radius:12px;flex:0 0 44px;
  background:linear-gradient(135deg,var(--brand),#ff6a3d);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:19px;letter-spacing:-1px;
}
.brand small{display:block;font-weight:500;font-size:12px;color:var(--muted)}
.menu{display:flex;flex-wrap:wrap;gap:4px;align-items:center}
.menu a{
  color:var(--ink);font-size:15px;font-weight:600;padding:9px 12px;border-radius:9px;
}
.menu a:hover{background:var(--paper);text-decoration:none}
.menu a.active{color:var(--brand);background:#fdeef0}
.btn{
  display:inline-block;background:var(--brand);color:#fff;padding:12px 22px;border-radius:999px;
  font-weight:700;border:0;cursor:pointer;
}
.btn:hover{background:var(--brand-dark);text-decoration:none;color:#fff}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn.ghost:hover{background:var(--paper);color:var(--ink)}
.btn.light{background:#fff;color:var(--ink)}

/* ---------- Hero ---------- */
.hero{position:relative;color:#fff;background:var(--ink)}
.hero img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.hero .inner{position:relative;max-width:var(--wrap);margin:0 auto;padding:104px 20px 96px}
.hero h1{font-size:clamp(30px,5vw,52px);line-height:1.28;margin:14px 0 18px;font-weight:800}
.hero p.lead{font-size:clamp(17px,2vw,20px);max-width:760px;color:#e4e9f2}
.eyebrow{
  display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);
  padding:6px 14px;border-radius:999px;font-size:13px;letter-spacing:.4px
}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line)}
.stats div{background:var(--paper);padding:26px 18px;text-align:center}
.stats b{display:block;font-size:28px;color:var(--brand)}
.stats span{font-size:14px;color:var(--muted)}

/* ---------- Sections ---------- */
section{padding:64px 0}
section.alt{background:var(--paper)}
h2{font-size:clamp(24px,3.4vw,34px);line-height:1.4;margin:0 0 10px;font-weight:800}
h3{font-size:clamp(19px,2.4vw,23px);line-height:1.5;margin:34px 0 8px;font-weight:700}
h4{font-size:18px;margin:22px 0 6px;font-weight:700}
p{margin:0 0 16px}
.sub{color:var(--muted);max-width:820px;margin-bottom:26px}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.card .pad{padding:20px}
.card img{aspect-ratio:3/2;object-fit:cover;width:100%}
.card h4{margin:0 0 6px}
.card p{color:var(--muted);font-size:15.5px;margin:0}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:var(--shadow)}
figure{margin:26px 0}
figure img{border-radius:var(--radius);box-shadow:var(--shadow)}
figcaption{font-size:14px;color:var(--muted);margin-top:8px;text-align:center}
ul.check{list-style:none;padding:0;margin:0 0 18px}
ul.check li{position:relative;padding-left:28px;margin-bottom:9px}
ul.check li:before{
  content:"";position:absolute;left:0;top:.65em;width:12px;height:12px;border-radius:4px;
  background:var(--brand)
}
ol,ul{padding-left:22px}
li{margin-bottom:7px}
table{width:100%;border-collapse:collapse;font-size:15.5px;margin:20px 0;background:#fff}
th,td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top}
th{background:var(--ink);color:#fff;font-weight:600}
tbody tr:nth-child(even){background:var(--paper)}
blockquote{
  margin:26px 0;padding:20px 24px;background:var(--paper);border-left:4px solid var(--brand);
  border-radius:0 var(--radius) var(--radius) 0;color:var(--ink-2)
}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gallery img{aspect-ratio:3/2;object-fit:cover;border-radius:12px}
.callout{
  background:linear-gradient(120deg,var(--ink),#1c2f52);color:#fff;border-radius:18px;
  padding:38px;text-align:center
}
.callout h2{color:#fff}
.callout p{color:#dbe3ef;max-width:640px;margin:0 auto 22px}
.badge{display:inline-block;font-size:13px;background:#fdeef0;color:var(--brand-dark);padding:4px 12px;border-radius:999px;margin-bottom:10px}
.toc{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;margin:28px 0}
.toc ol{margin:0;columns:2;column-gap:34px}
.toc a{color:var(--ink-2)}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:12px}
summary{cursor:pointer;font-weight:700}
.form{display:grid;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
label{font-size:14px;font-weight:600}
input,textarea,select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;font-size:16px;background:#fff
}
.note{font-size:14px;color:var(--muted)}

/* ---------- Footer ---------- */
footer.site{background:var(--ink);color:#aebbcd;padding:54px 0 26px;font-size:15px}
footer.site h5{color:#fff;font-size:16px;margin:0 0 12px}
footer.site a{color:#aebbcd}
footer.site .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:30px}
footer.site ul{list-style:none;padding:0;margin:0}
.copy{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:18px;font-size:14px;text-align:center}

@media(max-width:900px){
  .g4,.g3,.stats,.gallery{grid-template-columns:repeat(2,1fr)}
  .split,footer.site .cols{grid-template-columns:1fr}
  .toc ol{columns:1}
}
@media(max-width:560px){
  .g2,.g3,.g4,.gallery,.stats{grid-template-columns:1fr}
  .hero .inner{padding:70px 20px 60px}
  section{padding:46px 0}
}