/* แก้วหยก อินเตอร์โปรดักท์ — Black theme */
:root{
  --bg:#0a0a0a;
  --bg-2:#111312;
  --card:#161917;
  --line:#262a28;
  --text:#ecefed;
  --muted:#9aa39e;
  --jade:#34c78a;
  --jade-2:#1f8f61;
  --radius:16px;
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Sarabun","Kanit",system-ui,sans-serif;
  background:var(--bg);color:var(--text);
  line-height:1.75;font-size:17px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:"Kanit",sans-serif;font-weight:500;line-height:1.3}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(10,10,10,.85);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--jade),var(--jade-2));
  display:grid;place-items:center;
  font-family:"Kanit";font-weight:600;color:#06140d;font-size:18px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-family:"Kanit";font-weight:500;font-size:17px}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:.14em;text-transform:uppercase}
.nav-links{display:flex;gap:6px;list-style:none}
.nav-links a{
  padding:8px 16px;border-radius:999px;color:var(--muted);font-size:15px;
  transition:.2s;
}
.nav-links a:hover{color:var(--text);background:var(--card)}
.nav-links a.active{color:#06140d;background:var(--jade);font-weight:600}
.menu-btn{
  display:none;background:none;border:1px solid var(--line);color:var(--text);
  width:44px;height:44px;border-radius:12px;font-size:20px;cursor:pointer;
}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:88vh;display:flex;align-items:center;overflow:hidden;
  background:radial-gradient(circle at 70% 30%,#123325 0%,#0a0a0a 60%)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.38}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,10,10,.95) 0%,rgba(10,10,10,.6) 55%,rgba(10,10,10,.3) 100%)}
.hero .container{position:relative;z-index:2;padding-top:60px;padding-bottom:60px}
.eyebrow{
  display:inline-block;color:var(--jade);font-size:14px;letter-spacing:.16em;
  text-transform:uppercase;margin-bottom:18px;font-weight:600;
}
.hero h1{font-size:clamp(36px,6vw,68px);max-width:820px;margin-bottom:22px}
.hero h1 em{font-style:normal;color:var(--jade)}
.hero p{max-width:620px;color:#c9cfcb;font-size:19px;margin-bottom:34px}
.btn-row{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:999px;
  font-family:"Kanit";font-size:16px;transition:.2s;border:1px solid transparent;cursor:pointer;
}
.btn-primary{background:var(--jade);color:#06140d;font-weight:500}
.btn-primary:hover{background:#4bdc9d;transform:translateY(-2px)}
.btn-ghost{border-color:#3a403d;color:var(--text)}
.btn-ghost:hover{border-color:var(--jade);color:var(--jade)}

.page-hero{position:relative;padding:120px 0 90px;overflow:hidden;
  background:radial-gradient(circle at 80% 20%,#123325 0%,#0a0a0a 65%);border-bottom:1px solid var(--line)}
.page-hero .hero-bg{opacity:.25}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,10,.4),rgba(10,10,10,.95))}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:clamp(34px,5vw,54px);margin-bottom:12px}
.page-hero p{color:var(--muted);max-width:640px;font-size:18px}

/* ---------- Sections ---------- */
section{padding:96px 0}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:52px}
.section-head h2{font-size:clamp(28px,4vw,42px);margin-bottom:14px}
.section-head p{color:var(--muted)}
.center{text-align:center;margin-left:auto;margin-right:auto}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:-60px;position:relative;z-index:5}
.stat{background:var(--card);padding:30px 24px;text-align:center}
.stat b{display:block;font-family:"Kanit";font-size:36px;font-weight:500;color:var(--jade)}
.stat span{color:var(--muted);font-size:15px}

.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split-img{border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;
  background:linear-gradient(135deg,#17231d,#0f1411);border:1px solid var(--line)}
.split-img img{width:100%;height:100%;object-fit:cover}
.split h2{font-size:clamp(28px,3.6vw,40px);margin-bottom:18px}
.split p{color:#c3c9c5;margin-bottom:16px}
.check-list{list-style:none;margin-top:22px;display:grid;gap:12px}
.check-list li{padding-left:34px;position:relative;color:#d6dbd8}
.check-list li::before{content:"✓";position:absolute;left:0;top:1px;width:22px;height:22px;border-radius:50%;
  background:rgba(52,199,138,.15);color:var(--jade);display:grid;place-items:center;font-size:13px;font-weight:700}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.25s;display:flex;flex-direction:column;
}
.card:hover{border-color:#355a48;transform:translateY(-4px)}
.card-img{aspect-ratio:16/10;background:linear-gradient(135deg,#17231d,#0f1411);overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.card:hover .card-img img{transform:scale(1.05)}
.card-body{padding:26px}
.card-body h3{font-size:21px;margin-bottom:10px}
.card-body p{color:var(--muted);font-size:16px}
.icon{width:48px;height:48px;border-radius:12px;background:rgba(52,199,138,.12);color:var(--jade);
  display:grid;place-items:center;font-size:22px;margin-bottom:18px}

.product-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
.chip{padding:8px 16px;border:1px solid var(--line);border-radius:999px;color:#cfd5d1;font-size:15px;background:var(--card)}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:s}
.step{padding:28px;border-left:2px solid var(--line);position:relative}
.step::before{counter-increment:s;content:"0" counter(s);font-family:"Kanit";font-size:40px;color:var(--jade);opacity:.9;display:block;margin-bottom:10px}
.step h3{font-size:20px;margin-bottom:8px}
.step p{color:var(--muted);font-size:16px}

.cta{position:relative;border-radius:24px;overflow:hidden;padding:70px 50px;
  background:linear-gradient(135deg,#0f3a28,#0b1511);border:1px solid #1f4a37}
.cta h2{font-size:clamp(26px,3.6vw,38px);margin-bottom:12px;max-width:640px}
.cta p{color:#c3d3ca;margin-bottom:28px;max-width:560px}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:32px}
.info-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  display:flex;gap:18px;align-items:flex-start;margin-bottom:16px}
.info-card .icon{margin:0;flex-shrink:0}
.info-card h3{font-size:17px;color:var(--muted);font-weight:400;margin-bottom:4px}
.info-card p,.info-card a{font-size:18px;color:var(--text)}
.info-card a:hover{color:var(--jade)}
.form{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:34px}
.form h2{font-size:26px;margin-bottom:6px}
.form > p{color:var(--muted);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:15px;color:var(--muted);margin-bottom:6px}
.field input,.field textarea,.field select{
  width:100%;background:#0d0f0e;border:1px solid var(--line);border-radius:12px;
  padding:13px 16px;color:var(--text);font:inherit;font-size:16px;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--jade)}
.field textarea{min-height:130px;resize:vertical}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.map{margin-top:32px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);height:380px;background:var(--card)}
.map iframe{width:100%;height:100%;border:0;filter:grayscale(1) invert(.92) contrast(.9)}

/* ---------- Privacy ---------- */
.prose{max-width:820px;margin:0 auto}
.prose h2{font-size:26px;margin:44px 0 14px;padding-top:10px;color:var(--text)}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:#c3c9c5}
.prose p{margin-bottom:14px}
.prose ul{padding-left:22px;margin-bottom:14px}
.prose li{margin-bottom:6px}
.prose .note{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--jade);
  border-radius:12px;padding:20px 24px;margin:24px 0;color:#c3c9c5}
.toc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 28px;margin-bottom:40px}
.toc h3{font-size:18px;margin-bottom:10px}
.toc ol{padding-left:20px;columns:2;column-gap:30px}
.toc a{color:var(--muted);font-size:15px}
.toc a:hover{color:var(--jade)}

/* ---------- Footer ---------- */
.site-footer{background:#050505;border-top:1px solid var(--line);padding:70px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px;padding-bottom:50px}
.site-footer h4{font-size:17px;margin-bottom:16px}
.site-footer p,.site-footer li{color:var(--muted);font-size:15px}
.site-footer ul{list-style:none;display:grid;gap:8px}
.site-footer a:hover{color:var(--jade)}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;color:#6f7773;font-size:14px}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.show{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .grid-3,.steps{grid-template-columns:repeat(2,1fr)}
  .split,.contact-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  body{font-size:16px}
  .menu-btn{display:block}
  .nav-links{
    position:absolute;top:72px;left:0;right:0;flex-direction:column;gap:0;
    background:#0a0a0a;border-bottom:1px solid var(--line);padding:10px 16px 18px;display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{display:block;padding:12px 16px;border-radius:12px}
  .container{padding:0 16px}
  section{padding:70px 0}
  .grid-3,.grid-2,.steps,.row-2,.footer-grid{grid-template-columns:1fr}
  .cta{padding:44px 26px}
  .stat{padding:22px 12px}
  .stat b{font-size:24px}
  .toc ol{columns:1}
  .hero{min-height:auto}
  .hero .container{padding-top:90px;padding-bottom:110px}
  .page-hero{padding:80px 0 60px}
}