:root{
  --charcoal:#1B1F24;
  --charcoal-2:#23282F;
  --charcoal-3:#2C323A;
  --paper:#F6F4EE;
  --paper-2:#EFEBE1;
  --amber:#FF9E1B;
  --amber-dark:#D97F06;
  --teal:#12A5AE;
  --teal-dark:#0C7B82;
  --ink:#14171A;
  --steel:#767D87;
  --steel-light:#9AA0A8;
  --line:rgba(255,255,255,0.14);
  --line-dark:rgba(20,23,26,0.12);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:'Sarabun',sans-serif;background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;overflow-x:hidden;}
h1,h2,h3,.display{font-family:'Kanit',sans-serif;letter-spacing:0.01em;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:'Kanit',sans-serif;font-size:13px;font-weight:600;letter-spacing:0.14em;text-transform:uppercase;color:var(--amber);}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--amber);display:inline-block;}
@media(prefers-reduced-motion: reduce){*{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important;}}

/* NAV */
header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(27,31,36,0.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;max-width:1180px;margin:0 auto;}
.brand{display:flex;align-items:center;gap:10px;font-family:'Kanit',sans-serif;font-weight:700;font-size:20px;color:#fff;}
.brand-logo{height:38px;width:auto;background:#fff;padding:3px;border-radius:2px;}
.brand .mark{width:34px;height:34px;border:2px solid var(--amber);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;color:var(--amber);transform:rotate(-6deg);}
.brand small{display:block;font-family:'Sarabun',sans-serif;font-weight:400;font-size:11px;color:var(--steel-light);letter-spacing:0.05em;}
nav.links{display:flex;gap:30px;}
nav.links a{color:#D9DCE0;font-size:14.5px;font-weight:500;transition:color 0.2s;}
nav.links a:hover{color:var(--amber);}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:'Kanit',sans-serif;font-weight:600;font-size:14.5px;padding:11px 22px;border:none;cursor:pointer;transition:transform 0.18s ease, box-shadow 0.18s ease;}
.btn-amber{background:var(--amber);color:var(--ink);}
.btn-amber:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,158,27,0.35);}
.btn-outline{background:transparent;border:1.5px solid rgba(255,255,255,0.35);color:#fff;}
.btn-outline:hover{border-color:var(--amber);color:var(--amber);}

/* HERO */
.hero{position:relative;background:radial-gradient(120% 140% at 85% -10%, #2D3540 0%, var(--charcoal) 55%, var(--charcoal) 100%);color:#fff;padding:168px 0 110px;overflow:hidden;}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);background-size:42px 42px;mask-image:radial-gradient(70% 60% at 70% 30%, black, transparent);pointer-events:none;}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr 0.85fr;gap:50px;align-items:center;}
.crop-frame{position:absolute;width:22px;height:22px;border-color:var(--amber);opacity:0.9;}
.crop-tl{top:110px;left:24px;border-top:2px solid;border-left:2px solid;}
.crop-tr{top:110px;right:24px;border-top:2px solid;border-right:2px solid;}
.crop-bl{bottom:60px;left:24px;border-bottom:2px solid;border-left:2px solid;}
.crop-br{bottom:60px;right:24px;border-bottom:2px solid;border-right:2px solid;}
.hero h1{font-size:clamp(38px, 5.4vw, 64px);font-weight:800;line-height:1.12;margin:20px 0 22px;}
.hero h1 .cut{position:relative;display:inline-block;color:var(--amber);}
.hero h1 .cut svg{position:absolute;left:-4%;top:-8%;width:108%;height:120%;overflow:visible;}
.hero p.lead{font-size:17.5px;line-height:1.75;color:#C7CCD2;max-width:480px;margin-bottom:34px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px;}
.hero-meta{display:flex;gap:28px;flex-wrap:wrap;padding-top:26px;border-top:1px solid var(--line);}
.hero-meta div{font-size:13.5px;color:var(--steel-light);}
.hero-meta strong{display:block;font-family:'Kanit',sans-serif;font-size:22px;color:#fff;font-weight:700;}
.swatch-board{position:relative;aspect-ratio:1/1.05;background:var(--charcoal-2);border:1px solid var(--line);padding:26px;}
.swatch-board::before{content:"ตัวอย่างวัสดุ";position:absolute;top:-13px;left:22px;background:var(--amber);color:var(--ink);font-family:'Kanit',sans-serif;font-size:12px;font-weight:700;padding:4px 12px;letter-spacing:0.04em;}
.swatch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;height:100%;}
.swatch{position:relative;display:flex;align-items:flex-end;padding:10px;font-family:'Kanit',sans-serif;font-size:11px;font-weight:600;color:rgba(255,255,255,0.85);border:1px solid rgba(255,255,255,0.08);}
.s1{background:linear-gradient(140deg,#FF9E1B,#D97F06);}
.s2{background:linear-gradient(140deg,#12A5AE,#0C7B82);}
.s3{background:linear-gradient(140deg,#4B535E,#2C323A);}
.s4{background:repeating-linear-gradient(45deg,#2C323A,#2C323A 6px,#343B44 6px,#343B44 12px);}
.s5{background:linear-gradient(140deg,#EFEBE1,#C9C3B4);color:#14171A;}
.s6{background:linear-gradient(140deg,#1B1F24,#3A424D);border:1px dashed rgba(255,158,27,0.5);}

/* TRUST BAR */
.trustbar{background:var(--ink);color:#fff;}
.trustbar .wrap{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-item{padding:30px 24px;text-align:center;border-left:1px solid rgba(255,255,255,0.08);}
.trust-item:first-child{border-left:none;}
.trust-item strong{display:block;font-family:'Kanit',sans-serif;font-size:30px;font-weight:800;color:var(--amber);}
.trust-item span{font-size:13px;color:var(--steel-light);}

section{padding:96px 0;}
.sec-head{max-width:640px;margin-bottom:56px;}
.sec-head h2{font-size:clamp(28px,3.6vw,40px);font-weight:700;margin-top:14px;line-height:1.25;}
.sec-head p{color:var(--steel);font-size:16px;margin-top:14px;line-height:1.7;}

/* SERVICES */
.services{background:var(--paper);}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-dark);border:1px solid var(--line-dark);}
.svc-card{background:var(--paper);padding:34px 28px;position:relative;transition:background 0.25s ease;}
.svc-card.main{background:var(--ink);color:#fff;}
.svc-card .num{font-family:'Kanit',sans-serif;font-size:12px;color:var(--steel);font-weight:600;letter-spacing:0.08em;}
.svc-card.main .num{color:var(--amber);}
.svc-icon{margin:18px 0 16px;color:var(--amber);}
.svc-card h3{font-size:18.5px;font-weight:600;margin-bottom:8px;}
.svc-card p{font-size:14.5px;line-height:1.65;color:var(--steel);}
.svc-card.main p{color:#C7CCD2;}
.svc-card:hover{background:var(--paper-2);}
.svc-card.main:hover{background:var(--charcoal-2);}
.tag-main{position:absolute;top:20px;right:20px;background:var(--amber);color:var(--ink);font-family:'Kanit',sans-serif;font-size:11px;font-weight:700;padding:3px 10px;letter-spacing:0.03em;}

/* PROCESS */
.process{background:var(--charcoal);color:#fff;}
.process .eyebrow{color:var(--teal);}
.process .eyebrow::before{background:var(--teal);}
.process .sec-head p{color:var(--steel-light);}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;}
.steps::before{content:"";position:absolute;top:23px;left:6%;right:6%;height:1px;background:repeating-linear-gradient(90deg, var(--steel) 0 8px, transparent 8px 16px);}
.step{position:relative;padding-right:20px;}
.step .dot{width:46px;height:46px;border-radius:50%;background:var(--charcoal);border:2px solid var(--teal);display:flex;align-items:center;justify-content:center;font-family:'Kanit',sans-serif;font-weight:700;color:var(--teal);margin-bottom:22px;position:relative;z-index:2;}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--steel-light);line-height:1.65;}

/* WHY US */
.why{background:var(--paper);}
.why-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:60px;align-items:start;}
.why-list{display:flex;flex-direction:column;gap:26px;}
.why-item{display:flex;gap:18px;}
.why-item .ico{flex:none;width:44px;height:44px;background:var(--ink);display:flex;align-items:center;justify-content:center;color:var(--amber);}
.why-item h3{font-size:16.5px;font-weight:600;margin-bottom:5px;}
.why-item p{font-size:14.5px;color:var(--steel);line-height:1.65;}
.why-card{background:var(--ink);color:#fff;padding:40px;position:relative;}
.why-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--amber),var(--teal));}
.why-card blockquote{font-family:'Kanit',sans-serif;font-size:21px;font-weight:500;line-height:1.5;margin-bottom:24px;}
.why-card cite{font-style:normal;font-size:13.5px;color:var(--steel-light);display:block;}
.why-card cite strong{color:#fff;display:block;font-family:'Kanit',sans-serif;font-size:14.5px;margin-bottom:2px;}

/* GALLERY */
.gallery{background:var(--paper-2);}
.gal-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:150px;gap:10px;}
.gal-cell{position:relative;overflow:hidden;display:flex;align-items:flex-end;padding:14px;font-family:'Kanit',sans-serif;font-size:13px;font-weight:600;color:#fff;background-size:cover;background-position:center;}
.gal-cell::after{content:"";position:absolute;inset:0;background:linear-gradient(to top, rgba(0,0,0,0.55), rgba(0,0,0,0) 55%);}
.gal-cell span{position:relative;z-index:2;}
.gal-cell.g-big{grid-column:span 2;grid-row:span 2;}
.muted-note{color:var(--steel);font-size:15px;}

/* CONTACT */
.contact{background:var(--charcoal);color:#fff;}
.contact .eyebrow{color:var(--amber);}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:stretch;}
.contact-cards{display:flex;flex-direction:column;gap:14px;}
.c-card{display:flex;align-items:center;gap:16px;background:var(--charcoal-2);border:1px solid var(--line);padding:20px 22px;transition:border-color 0.2s;}
.c-card:hover{border-color:var(--amber);}
.c-card .ico{color:var(--amber);flex:none;}
.c-card strong{display:block;font-family:'Kanit',sans-serif;font-size:15.5px;font-weight:600;margin-bottom:3px;}
.c-card span{font-size:14px;color:var(--steel-light);}
.qr-card .qr-img{flex:none;width:64px;height:64px;background:#fff;padding:4px;border-radius:2px;}
.map-box{background:var(--charcoal-2);border:1px solid var(--line);min-height:340px;overflow:hidden;}
.map-box iframe{width:100%;height:100%;min-height:340px;border:0;filter:grayscale(0.3) contrast(1.05);}

/* FOOTER */
footer{background:var(--ink);color:var(--steel-light);padding:44px 0 28px;}
.foot-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,0.08);flex-wrap:wrap;gap:20px;}
.foot-bottom{display:flex;justify-content:space-between;padding-top:22px;font-size:13px;flex-wrap:wrap;gap:10px;}
.foot-links{display:flex;gap:22px;flex-wrap:wrap;}
.foot-links a{font-size:14px;color:var(--steel-light);transition:color 0.2s;}
.foot-links a:hover{color:var(--amber);}

.reveal{opacity:0;transform:translateY(22px);transition:opacity 0.7s ease, transform 0.7s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

@media(max-width:980px){
  nav.links{display:none;}
  .hero-inner{grid-template-columns:1fr;}
  .swatch-board{max-width:420px;}
  .trustbar .wrap{grid-template-columns:repeat(2,1fr);}
  .svc-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:36px;}
  .steps::before{display:none;}
  .why-grid{grid-template-columns:1fr;}
  .gal-grid{grid-template-columns:repeat(2,1fr);}
  .gal-cell.g-big{grid-column:span 2;}
  .contact-grid{grid-template-columns:1fr;}
}
@media(max-width:600px){
  .hero{padding:140px 0 70px;}
  .crop-frame{display:none;}
  .hero-meta{gap:20px;}
  .svc-grid{grid-template-columns:1fr;}
  .trustbar .wrap{grid-template-columns:repeat(2,1fr);}
  .foot-top{flex-direction:column;align-items:flex-start;}
}