/* ============================================================
   EMBIZ QR Box — Design System
   ============================================================ */
:root{
  --green:#3EB44B;
  --green-600:#2F9A3C;
  --green-700:#25792F;
  --green-50:#EDF8EE;
  --green-100:#D6EFDA;
  --ink:#2E3033;
  --ink-700:#4A4E54;
  --ink-500:#6B7178;
  --ink-300:#9AA0A6;
  --line:#E4E7EA;
  --bg:#FFFFFF;
  --bg-soft:#F7F9F8;
  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(24,28,33,.06), 0 1px 3px rgba(24,28,33,.05);
  --shadow:0 6px 20px rgba(24,28,33,.07);
  --shadow-lg:0 18px 48px rgba(24,28,33,.10);
  --wrap:1140px;
  --font:'IBM Plex Sans Thai','Noto Sans Thai',-apple-system,BlinkMacSystemFont,'Segoe UI',Tahoma,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--soft{background:var(--bg-soft)}
.section--tight{padding:64px 0}

/* ---------- Type helpers ---------- */
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--green-600);margin-bottom:14px;
}
.h1{font-size:clamp(32px,4.6vw,52px);letter-spacing:-.02em}
.h2{font-size:clamp(26px,3.2vw,38px);letter-spacing:-.02em}
.h3{font-size:20px}
.lead{font-size:clamp(16px,1.6vw,19px);color:var(--ink-700)}
.muted{color:var(--ink-500)}
.small{font-size:14px}
.center{text-align:center}
.section-head{max-width:720px;margin:0 auto 48px;text-align:center}
.section-head p{margin-top:14px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:.18s ease;
  font-family:inherit;
}
.btn--primary{background:var(--green);color:#fff;box-shadow:0 6px 16px rgba(62,180,75,.28)}
.btn--primary:hover{background:var(--green-600);transform:translateY(-1px)}
.btn--ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--ink-300);background:var(--bg-soft)}
.btn--light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.35)}
.btn--light:hover{background:rgba(255,255,255,.24)}
.btn--lg{padding:16px 34px;font-size:16px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}
.btn-row--center{justify-content:center}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:17px}
.brand img{height:38px;width:auto}
.brand small{display:block;font-size:10.5px;letter-spacing:.18em;color:var(--green-600);font-weight:600;line-height:1.4}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  padding:9px 15px;border-radius:999px;font-size:15px;font-weight:500;color:var(--ink-700);
  transition:.16s ease;
}
.nav-links a:hover{background:var(--bg-soft);color:var(--ink)}
.nav-links a.is-active{color:var(--green-700);background:var(--green-50);font-weight:600}
.nav-cta{margin-left:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:12px;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle i{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle i::before,.nav-toggle i::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(168deg,#F4FBF5 0%,#FFFFFF 58%);
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-160px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(62,180,75,.14),transparent 65%);
}
.hero .wrap{position:relative;z-index:1}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:76px 0 84px;
}
.hero h1{margin-bottom:20px}
.hero .lead{margin-bottom:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:7px 15px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13.5px;font-weight:500;color:var(--ink-700);
  box-shadow:var(--shadow-sm);
}
.chip b{color:var(--green-700);font-weight:700}
.hero-visual{position:relative;display:flex;justify-content:center}
.hero-visual img{
  max-width:330px;filter:drop-shadow(0 30px 50px rgba(24,28,33,.16));
}
.hero-stat{
  position:absolute;bottom:14px;left:0;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:14px 18px;box-shadow:var(--shadow);
}
.hero-stat b{display:block;font-size:22px;color:var(--green-700);line-height:1.2}
.hero-stat span{font-size:13px;color:var(--ink-500)}

/* ---------- Stat band ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.stat{background:#fff;padding:30px 24px;text-align:center}
.stat b{display:block;font-size:clamp(26px,3vw,34px);color:var(--ink);line-height:1.2}
.stat span{font-size:14px;color:var(--ink-500)}

/* ---------- Cards ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px;transition:.2s ease;
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px);border-color:var(--green-100)}
.card h3{margin-bottom:10px}
.card p{color:var(--ink-500);font-size:15px}
.icon{
  width:46px;height:46px;border-radius:13px;background:var(--green-50);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
  color:var(--green-700);
}
.icon svg{width:23px;height:23px;stroke:currentColor;fill:none;stroke-width:1.9;
  stroke-linecap:round;stroke-linejoin:round}

/* ---------- Steps ---------- */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;padding-top:16px}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  font-size:34px;font-weight:700;color:var(--green-100);line-height:1;display:block;margin-bottom:10px;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--ink-500)}

/* ---------- Product / feature split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split--rev .split-media{order:2}
.split-media{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px;display:flex;align-items:center;justify-content:center;
}
.split-media img{max-height:420px;width:auto;border-radius:10px}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;padding:9px 0;font-size:15.5px;color:var(--ink-700);
}
.checklist li::before{
  content:"";flex:none;width:20px;height:20px;margin-top:4px;border-radius:50%;
  background:var(--green-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232F9A3C' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat;
}

/* ---------- Model cards ---------- */
.models{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.model{
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff;
  display:flex;flex-direction:column;transition:.2s ease;
}
.model:hover{box-shadow:var(--shadow-lg);border-color:var(--green-100)}
.model-media{background:var(--bg-soft);padding:36px;display:flex;justify-content:center;border-bottom:1px solid var(--line)}
.model-media img{max-height:280px;width:auto}
.model-body{padding:30px;display:flex;flex-direction:column;flex:1}
.tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  padding:5px 12px;border-radius:999px;background:var(--green-50);color:var(--green-700);margin-bottom:14px;
}
.price{font-size:26px;font-weight:700;margin:16px 0 4px}
.price small{font-size:14px;font-weight:500;color:var(--ink-500)}
.model .btn{margin-top:22px;align-self:flex-start}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff}
table{width:100%;border-collapse:collapse;min-width:640px;font-size:15px}
th,td{padding:16px 22px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:var(--bg-soft);font-size:13.5px;letter-spacing:.03em;color:var(--ink-500);font-weight:600}
tbody tr:last-child td{border-bottom:none}
td:first-child{font-weight:600;color:var(--ink)}
.yes{color:var(--green-600);font-weight:700}
.no{color:var(--ink-300)}

/* ---------- Logos ---------- */
.logos{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:18px;
}
.logo-pill{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  height:74px;width:150px;display:flex;align-items:center;justify-content:center;padding:14px;
}
.logo-pill img{max-height:100%;max-width:100%;width:auto;object-fit:contain}

/* ---------- Gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.gallery figure{margin:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.gallery img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:.3s ease}
.gallery figure:hover img{transform:scale(1.04)}
.gallery figcaption{padding:12px 16px;font-size:13.5px;color:var(--ink-500);border-top:1px solid var(--line)}

/* ---------- CTA band ---------- */
.cta{
  background:linear-gradient(135deg,var(--green-700),var(--green));
  color:#fff;border-radius:var(--radius-lg);padding:56px;text-align:center;
}
.cta h2{margin-bottom:14px}
.cta p{color:rgba(255,255,255,.9);max-width:560px;margin:0 auto 28px}

/* ---------- Form ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
label{font-size:14px;font-weight:600;color:var(--ink-700)}
input,select,textarea{
  font-family:inherit;font-size:15px;padding:12px 15px;border:1px solid var(--line);
  border-radius:11px;background:#fff;color:var(--ink);transition:.15s ease;
}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(62,180,75,.15);
}
textarea{resize:vertical;min-height:120px}
.form-note{font-size:13.5px;color:var(--ink-500);margin-top:14px}
.form-ok{
  display:none;margin-top:18px;padding:14px 18px;border-radius:12px;
  background:var(--green-50);border:1px solid var(--green-100);color:var(--green-700);font-size:14.5px;
}
.form-ok.show{display:block}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
details{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:18px 22px;margin-bottom:12px}
details[open]{border-color:var(--green-100)}
summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-size:21px;color:var(--green-600);flex:none;line-height:1}
details[open] summary::after{content:"–"}
details p{margin-top:12px;color:var(--ink-500);font-size:15px}

/* ---------- Footer ---------- */
.site-footer{background:#2A2C2F;color:#C9CDD2;padding:64px 0 28px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:44px}
.site-footer h4{color:#fff;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:16px}
.site-footer a:hover{color:#fff}
.site-footer li{padding:5px 0}
.footer-brand img{height:44px;margin-bottom:16px;background:#fff;border-radius:10px;padding:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:22px;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8D9298}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:40px;padding:56px 0 64px}
  .hero-visual img{max-width:260px}
  .hero-stat{position:static;margin-top:22px;display:inline-block}
  .grid-4,.steps{grid-template-columns:repeat(2,1fr)}
  .grid-3,.gallery{grid-template-columns:repeat(2,1fr)}
  .split,.models,.footer-grid{grid-template-columns:1fr;gap:34px}
  .split--rev .split-media{order:0}
  .stats{grid-template-columns:repeat(2,1fr)}
  .section{padding:64px 0}
  .nav-links{
    display:none;position:absolute;top:74px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;
    padding:12px 20px 22px;gap:2px;box-shadow:var(--shadow);
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px;border-radius:10px}
  .nav-cta{margin:10px 0 0}
  .nav-toggle{display:flex}
  .cta{padding:40px 26px}
}
@media(max-width:600px){
  .grid-2,.grid-3,.grid-4,.steps,.gallery,.form-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .section{padding:52px 0}
  .split-media{padding:22px}
}