:root{
  --ink:#14110d;
  --ink-soft:#1c1812;
  --panel:#221d16;
  --panel-line:#3a3225;
  --steel:#4a4334;
  --gold:#e3a23c;
  --gold-bright:#f6c76b;
  --gold-dim:#8a6a32;
  --ember:#c2272f;
  --ember-deep:#7d161c;
  --paper:#f3ece0;
  --paper-dim:#cfc6b4;
  --muted:#a89c87;
  --radius:2px;
  --maxw:1180px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important;}
}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:'Sarabun',sans-serif;
  font-weight:400;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,.display{
  font-family:'Kanit',sans-serif;
  color:var(--paper);
  margin:0;
  letter-spacing:.01em;
}
a{color:inherit;text-decoration:none;}
img,svg{display:block;max-width:100%;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.eyebrow{
  font-family:'Kanit',sans-serif;
  font-size:.78rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gold);
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:linear-gradient(90deg,var(--ember),var(--gold));
  display:inline-block;
}
/* ---------- texture: diamond plate ---------- */
.plate-texture{
  background-image:
    radial-gradient(circle at 12px 12px, rgba(227,162,60,.10) 1.6px, transparent 1.8px);
  background-size:24px 24px;
}
/* ---------- weld seam signature divider ---------- */
.weld-seam{
  height:10px;
  width:100%;
  background:
    repeating-radial-gradient(circle at 0 6px, rgba(20,17,13,.85) 0 2px, transparent 3px 11px),
    linear-gradient(90deg, var(--ember-deep), var(--ember) 18%, var(--gold) 50%, var(--ember) 82%, var(--ember-deep));
  background-size: 11px 11px, 100% 100%;
  opacity:.9;
  box-shadow:0 1px 0 rgba(0,0,0,.4), 0 -1px 0 rgba(255,255,255,.05);
}

/* =========================================================
   NAV / HEADER  (partials/header.html)
   ========================================================= */
header{
  position:sticky;top:0;z-index:100;
  background:rgba(20,17,13,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--panel-line);
  transition:padding .25s ease;
}
.navwrap{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 24px;max-width:var(--maxw);margin:0 auto;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-badge{
  width:42px;height:42px;border-radius:50%;
  border:1.5px solid var(--gold);
  display:flex;align-items:center;justify-content:center;
  background:radial-gradient(circle at 35% 30%, var(--panel), var(--ink));
  flex-shrink:0;
}
.brand-badge svg{width:22px;height:22px;color:var(--gold);}
.brand-name{font-family:'Kanit';font-weight:700;font-size:1.18rem;line-height:1.1;color:var(--paper);}
.brand-tag{font-size:.68rem;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;}
nav.links{display:flex;gap:34px;align-items:center;}
nav.links a{
  font-family:'Kanit';font-size:.92rem;font-weight:500;color:var(--paper-dim);
  position:relative;padding:6px 0;transition:color .2s;
}
nav.links a:hover{color:var(--gold-bright);}
nav.links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:linear-gradient(90deg,var(--gold),var(--ember));
  transition:width .25s ease;
}
nav.links a:hover::after{width:100%;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:'Kanit';font-weight:600;font-size:.92rem;
  padding:13px 26px;border-radius:var(--radius);
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s;
  white-space:nowrap;
}
.btn-gold{
  background:linear-gradient(135deg,var(--gold-bright),var(--gold) 60%,var(--gold-dim));
  color:#1a1208;
  box-shadow:0 4px 18px rgba(227,162,60,.25);
}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(227,162,60,.38);}
.btn-ghost{
  background:transparent;border-color:var(--steel);color:var(--paper);
}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-bright);}
.navcta{display:flex;align-items:center;gap:14px;}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;}
.hamburger span{width:24px;height:2px;background:var(--paper);}

/* mobile menu */
.mobile-menu{
  display:none;position:fixed;inset:0;z-index:200;
  background:rgba(15,12,8,.97);
  flex-direction:column;align-items:center;justify-content:center;gap:30px;
}
.mobile-menu.open{display:flex;}
.mobile-menu a{font-family:'Kanit';font-size:1.4rem;font-weight:600;color:var(--paper);}
.mobile-menu .close-btn{position:absolute;top:24px;right:24px;background:none;border:none;color:var(--paper);font-size:1.8rem;cursor:pointer;}

/* =========================================================
   HERO  (partials/hero.html)
   ========================================================= */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(ellipse 900px 500px at 78% 8%, rgba(227,162,60,.16), transparent 60%),
    radial-gradient(ellipse 700px 500px at 10% 100%, rgba(194,39,47,.14), transparent 55%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-soft) 100%);
  padding:96px 0 70px;
}
.hero-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
}
.hero h1{
  font-size:clamp(2.1rem,4.4vw,3.4rem);
  font-weight:800;line-height:1.18;letter-spacing:-.01em;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(90deg,var(--gold-bright),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-eyebrow{margin-bottom:18px;}
.hero-divider{width:120px;margin:24px 0;border-radius:6px;overflow:hidden;}
.hero p.lead{
  font-size:1.08rem;color:var(--paper-dim);max-width:54ch;margin-bottom:34px;
}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap;}
.hero-art{
  position:relative;display:flex;align-items:center;justify-content:center;
  aspect-ratio:1/1;
}
.hero-art .ring{
  position:absolute;inset:0;border-radius:50%;
  border:1px solid var(--panel-line);
}
.hero-art .ring.r2{inset:34px;border-color:rgba(227,162,60,.25);}
.hero-art .glow{
  position:absolute;width:78%;height:78%;border-radius:50%;
  background:radial-gradient(circle, rgba(227,162,60,.22), transparent 70%);
  filter:blur(6px);
}
.hero-art .badge{
  position:relative;width:62%;aspect-ratio:1/1;border-radius:50%;
  background:radial-gradient(circle at 35% 28%, var(--panel), var(--ink-soft) 70%);
  border:1.5px solid var(--gold);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 8px rgba(227,162,60,.06), 0 30px 60px rgba(0,0,0,.5);
}
.hero-art .badge svg{width:46%;height:46%;color:var(--gold-bright);}
.hero-art .orbit-dot{
  position:absolute;width:9px;height:9px;border-radius:50%;
  background:var(--ember);box-shadow:0 0 12px var(--ember);
}
@media (prefers-reduced-motion: no-preference){
  .hero-art .badge{animation:floaty 6s ease-in-out infinite;}
}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-10px);}}

/* =========================================================
   STATS  (partials/stats.html)
   ========================================================= */
.stats{
  background:var(--panel);
  border-top:1px solid var(--panel-line);
  border-bottom:1px solid var(--panel-line);
  padding:40px 0;
}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;
}
.stat .num{
  font-family:'Kanit';font-weight:800;font-size:2.1rem;
  background:linear-gradient(90deg,var(--gold-bright),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat .label{font-size:.86rem;color:var(--muted);margin-top:4px;letter-spacing:.02em;}

/* ---------- section shells (shared) ---------- */
section{padding:96px 0;}
.section-head{max-width:640px;margin:0 0 52px;}
.section-head h2{font-size:clamp(1.7rem,3vw,2.3rem);font-weight:700;margin-top:14px;}
.section-head p{color:var(--paper-dim);margin-top:14px;font-size:1.02rem;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* =========================================================
   SERVICES  (partials/services.html)
   ========================================================= */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.service-card{
  background:linear-gradient(180deg, var(--panel), var(--ink-soft));
  border:1px solid var(--panel-line);
  border-radius:var(--radius);
  padding:38px 30px;
  position:relative;overflow:hidden;
  transition:transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.service-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--ember),var(--gold));
  transform:scaleX(0);transform-origin:left;transition:transform .35s ease;
}
.service-card:hover{transform:translateY(-6px);border-color:var(--gold-dim);box-shadow:0 20px 40px rgba(0,0,0,.35);}
.service-card:hover::before{transform:scaleX(1);}
.service-num{
  font-family:'Kanit';font-size:.78rem;color:var(--gold-dim);letter-spacing:.18em;font-weight:600;
}
.icon-circle{
  width:58px;height:58px;border-radius:50%;
  border:1px solid var(--panel-line);
  background:var(--ink);
  display:flex;align-items:center;justify-content:center;
  margin:18px 0 22px;
}
.icon-circle svg{width:28px;height:28px;color:var(--gold);}
.service-card h3{font-size:1.28rem;font-weight:600;margin-bottom:12px;}
.service-card p{color:var(--paper-dim);font-size:.96rem;}
.service-card ul{margin:16px 0 0;padding:0;list-style:none;}
.service-card li{
  font-size:.9rem;color:var(--muted);padding-left:18px;position:relative;margin-bottom:8px;
}
.service-card li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:1.5px;background:var(--gold);
}

/* =========================================================
   WHY US  (partials/why.html)
   ========================================================= */
.why-section{
  background:var(--ink-soft);
  border-top:1px solid var(--panel-line);
  border-bottom:1px solid var(--panel-line);
}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;}
.why-item{text-align:left;}
.why-item .icon-circle{margin-bottom:18px;}
.why-item h4{font-size:1.06rem;font-weight:600;margin-bottom:8px;}
.why-item p{font-size:.92rem;color:var(--muted);}

/* =========================================================
   PORTFOLIO  (partials/portfolio.html)
   ========================================================= */
.portfolio-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.work-card{
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--panel-line);
  background:var(--panel);
  transition:transform .3s ease, box-shadow .3s ease;
}
.work-card:hover{transform:translateY(-5px);box-shadow:0 22px 44px rgba(0,0,0,.4);}
.work-visual{
  aspect-ratio:4/3;position:relative;
  display:flex;align-items:center;justify-content:center;
  background:
    radial-gradient(circle at 30% 20%, rgba(227,162,60,.18), transparent 55%),
    linear-gradient(150deg, var(--ink-soft), var(--ink) 70%);
  border-bottom:1px solid var(--panel-line);
}
.work-visual svg{width:34%;height:34%;color:var(--gold);opacity:.92;}
.work-tag{
  position:absolute;top:14px;left:14px;
  font-family:'Kanit';font-size:.68rem;letter-spacing:.1em;
  background:rgba(20,17,13,.75);border:1px solid var(--panel-line);
  color:var(--gold-bright);padding:5px 11px;border-radius:20px;
}
.work-body{padding:22px 24px 26px;}
.work-body h4{font-size:1.06rem;font-weight:600;margin-bottom:8px;}
.work-body p{font-size:.88rem;color:var(--muted);}

/* =========================================================
   QUOTE / TRUST STRIP  (partials/quote.html)
   ========================================================= */
.quote-strip{
  text-align:center;padding:70px 0;
  background:linear-gradient(180deg, var(--ink) 0%, var(--ink-soft) 100%);
}
.quote-strip blockquote{
  font-family:'Kanit';font-weight:500;font-size:clamp(1.2rem,2.4vw,1.7rem);
  max-width:760px;margin:0 auto 18px;line-height:1.5;color:var(--paper);
}
.quote-strip .who{color:var(--gold);font-size:.92rem;letter-spacing:.04em;}

/* =========================================================
   CONTACT  (partials/contact.html)
   ========================================================= */
.contact-section{
  background:var(--panel);border-top:1px solid var(--panel-line);
}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.contact-info .item{display:flex;gap:16px;margin-bottom:26px;align-items:flex-start;}
.contact-info .icon-circle{flex-shrink:0;margin:0;width:48px;height:48px;}
.contact-info .icon-circle svg{width:22px;height:22px;}
.contact-info h4{font-size:1rem;font-weight:600;margin-bottom:4px;}
.contact-info p,.contact-info a{font-size:.92rem;color:var(--paper-dim);}
.contact-info a:hover{color:var(--gold-bright);}
.hours-table{margin-top:30px;border-top:1px solid var(--panel-line);padding-top:22px;}
.hours-row{display:flex;justify-content:space-between;font-size:.88rem;color:var(--paper-dim);padding:6px 0;}
.hours-row span:first-child{color:var(--muted);}

.form-card{
  background:var(--ink-soft);border:1px solid var(--panel-line);
  border-radius:var(--radius);padding:36px;
}
.form-card h3{font-size:1.2rem;margin-bottom:6px;}
.form-card .sub{font-size:.88rem;color:var(--muted);margin-bottom:26px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:.82rem;color:var(--paper-dim);margin-bottom:7px;font-family:'Kanit';letter-spacing:.02em;}
.field input,.field textarea{
  width:100%;background:var(--ink);border:1px solid var(--panel-line);
  border-radius:var(--radius);padding:12px 14px;color:var(--paper);
  font-family:'Sarabun';font-size:.94rem;resize:vertical;
  transition:border-color .2s;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--gold);}
.form-card .btn{width:100%;justify-content:center;margin-top:6px;}
.form-note{font-size:.78rem;color:var(--muted);margin-top:14px;text-align:center;}

/* =========================================================
   FOOTER  (partials/footer.html)
   ========================================================= */
footer{background:var(--ink);padding:54px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:40px;}
.footer-brand p{color:var(--muted);font-size:.9rem;margin-top:14px;max-width:32ch;}
footer h5{font-family:'Kanit';font-size:.9rem;letter-spacing:.06em;color:var(--paper);margin-bottom:16px;}
footer ul{list-style:none;padding:0;margin:0;}
footer li{margin-bottom:10px;}
footer a{font-size:.9rem;color:var(--muted);transition:color .2s;}
footer a:hover{color:var(--gold-bright);}
.footer-bottom{
  border-top:1px solid var(--panel-line);padding-top:24px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:.8rem;color:var(--muted);
}

/* ---------- reveal-on-scroll (shared) ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:980px){
  nav.links{display:none;}
  .hamburger{display:flex;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-art{max-width:300px;margin:0 auto;}
  .stats-grid{grid-template-columns:repeat(2,1fr);row-gap:28px;}
  .services-grid{grid-template-columns:1fr;}
  .why-grid{grid-template-columns:repeat(2,1fr);}
  .portfolio-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:560px){
  .why-grid{grid-template-columns:1fr;}
  .portfolio-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-ctas{flex-direction:column;align-items:stretch;}
  section{padding:64px 0;}
}