/* =========================================================
   CO-ACT GROUND — Industrial floor coating services
   Design tokens
   ========================================================= */
:root{
  --yellow:      #FFC400;
  --yellow-deep: #E3A900;
  --ink:         #16160F;
  --charcoal:    #26261E;
  --paper:       #F4F1E6;
  --paper-dim:   #EAE5D4;
  --white:       #FFFFFF;
  --gray:        #6B675C;
  --line:        #DCD6C2;
  --radius:      2px;
  --maxw: 1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Sarabun', sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{
  font-family:'Kanit', sans-serif;
  margin:0 0 .5em;
  line-height:1.2;
  color:var(--ink);
}
p{margin:0 0 1em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
section{padding:88px 0;}
@media (max-width:720px){ section{padding:56px 0;} }

/* ---- Signature element: hazard stripe (line-marking motif) ---- */
.hazard-stripe{
  height:12px;
  width:100%;
  background:repeating-linear-gradient(
    45deg,
    var(--ink) 0 22px,
    var(--yellow) 22px 44px
  );
}
.hazard-stripe.thin{height:6px;}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 28px;
  font-family:'Kanit', sans-serif;
  font-weight:600;
  font-size:16px;
  border-radius:var(--radius);
  border:2px solid var(--ink);
  transition:transform .15s ease, background .15s ease, color .15s ease;
  cursor:pointer;
  white-space:nowrap;
}
.btn-primary{background:var(--yellow);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--yellow);transform:translateY(-2px);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px);}
.btn-outline.on-dark{color:var(--white);border-color:var(--white);}
.btn-outline.on-dark:hover{background:var(--white);color:var(--ink);}

/* ---- Header / Nav ---- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--paper);
  border-bottom:3px solid var(--ink);
}
.nav-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;
  max-width:var(--maxw);margin:0 auto;
}
.brand{display:flex;flex-direction:column;line-height:1;}
.brand .th{
  font-family:'Kanit',sans-serif;font-weight:800;font-size:1.5rem;letter-spacing:.5px;
}
.brand .en{
  font-family:'Kanit',sans-serif;font-weight:500;font-size:.68rem;letter-spacing:3px;color:var(--gray);
  margin-top:4px;
}
.brand .en b{color:var(--yellow-deep);}
nav.main-nav{display:flex;gap:6px;align-items:center;}
nav.main-nav a{
  font-family:'Kanit',sans-serif;font-weight:500;font-size:.98rem;
  padding:10px 16px;border-radius:var(--radius);
  position:relative;
}
nav.main-nav a:hover{background:var(--paper-dim);}
nav.main-nav a.active{color:var(--ink);}
nav.main-nav a.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:6px;height:3px;background:var(--yellow);
}
.nav-cta{display:flex;align-items:center;gap:10px;}
.menu-toggle{display:none;background:none;border:2px solid var(--ink);border-radius:var(--radius);padding:8px 10px;cursor:pointer;}
.menu-toggle span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;}

@media (max-width:900px){
  nav.main-nav{
    position:fixed;top:73px;left:0;right:0;
    background:var(--paper);
    flex-direction:column;align-items:stretch;
    border-bottom:3px solid var(--ink);
    padding:8px 24px 20px;
    display:none;
    gap:2px;
  }
  nav.main-nav.open{display:flex;}
  nav.main-nav a{padding:14px 8px;border-bottom:1px solid var(--line);}
  .menu-toggle{display:inline-block;}
  .nav-cta .btn span.label{display:none;}
}

/* ---- Hero ---- */
.hero{
  position:relative;
  min-height:86vh;
  display:flex;align-items:flex-end;
  color:var(--white);
  background-size:cover;background-position:center;
  isolation:isolate;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(0deg, rgba(15,15,10,.92) 0%, rgba(15,15,10,.55) 55%, rgba(15,15,10,.35) 100%);
}
.hero-inner{padding:64px 0 56px;max-width:var(--maxw);margin:0 auto;width:100%;padding-left:24px;padding-right:24px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:'Kanit',sans-serif;font-weight:600;letter-spacing:3px;font-size:.78rem;
  color:var(--yellow);text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:28px;height:3px;background:var(--yellow);display:inline-block;}
.hero h1{
  font-size:clamp(2.1rem, 5vw, 3.6rem);
  font-weight:800;
  max-width:820px;
  margin-bottom:.4em;
}
.hero h1 mark{
  background:none;color:var(--yellow);
  background-image:linear-gradient(transparent 62%, var(--yellow) 62%);
  -webkit-box-decoration-break:clone;box-decoration-break:clone;
}
.hero p.lead{max-width:620px;font-size:1.08rem;color:#EDEAE0;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ---- Section headings ---- */
.section-head{max-width:680px;margin-bottom:48px;}
.section-head .eyebrow{color:var(--yellow-deep);}
.section-head .eyebrow::before{background:var(--yellow-deep);}
.section-head h2{font-size:clamp(1.6rem,3.2vw,2.4rem);}
.section-head p{color:var(--gray);font-size:1.05rem;}

/* ---- Service cards ---- */
.services-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border:2px solid var(--ink);
}
@media (max-width:980px){ .services-grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:600px){ .services-grid{grid-template-columns:1fr;} }
.service-card{
  background:var(--white);
  border-right:2px solid var(--ink);
  border-bottom:2px solid var(--ink);
  display:flex;flex-direction:column;
  transition:background .15s ease;
}
.services-grid .service-card:nth-child(4n){border-right:none;}
@media (max-width:980px){ .services-grid .service-card:nth-child(2n){border-right:none;} .services-grid .service-card:nth-child(4n){border-right:2px solid var(--ink);} .services-grid .service-card:nth-child(2n):last-child{border-right:none;} }
@media (max-width:600px){ .services-grid .service-card{border-right:none !important;} }
.service-card .thumb{height:180px;overflow:hidden;position:relative;}
.service-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.service-card:hover .thumb img{transform:scale(1.06);}
.service-card .thumb::after{content:"";position:absolute;left:0;right:0;bottom:0;height:6px;background:repeating-linear-gradient(45deg,var(--ink) 0 10px,var(--yellow) 10px 20px);}
.service-card .body{padding:24px 22px 28px;flex:1;display:flex;flex-direction:column;}
.service-card h3{font-size:1.15rem;margin-bottom:.5em;}
.service-card p{color:var(--gray);font-size:.95rem;margin-bottom:1.2em;}
.service-card .tag{
  margin-top:auto;font-family:'Kanit',sans-serif;font-size:.78rem;font-weight:600;
  color:var(--yellow-deep);letter-spacing:1px;text-transform:uppercase;
}

/* ---- Process steps ---- */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
@media (max-width:900px){ .process{grid-template-columns:repeat(2,1fr);} }
@media (max-width:520px){ .process{grid-template-columns:1fr;} }
.step{position:relative;padding-top:18px;}
.step .num{
  font-family:'Kanit',sans-serif;font-weight:800;font-size:2.6rem;color:transparent;
  -webkit-text-stroke:1.6px var(--ink);
  line-height:1;margin-bottom:12px;
}
.step h4{font-size:1.05rem;margin-bottom:.4em;}
.step p{color:var(--gray);font-size:.94rem;}

/* ---- Split / image-text sections ---- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;}
@media (max-width:900px){ .split{grid-template-columns:1fr;gap:32px;} }
.split.reverse{grid-template-columns:1fr 1.05fr;}
@media (max-width:900px){ .split.reverse{grid-template-columns:1fr;} }
.split.reverse .media{order:-1;}
@media (max-width:900px){ .split.reverse .media{order:0;} }
.media{position:relative;}
.media img{width:100%;height:100%;object-fit:cover;border:2px solid var(--ink);}
.media .frame{position:absolute;top:16px;left:16px;right:-16px;bottom:-16px;border:2px solid var(--yellow);z-index:-1;}
.media-wrap{position:relative;padding:0 16px 16px 0;}
.media-wrap .frame{content:"";position:absolute;top:16px;left:16px;right:0;bottom:0;border:2px solid var(--yellow);}
.check-list{list-style:none;margin:0 0 1.2em;padding:0;}
.check-list li{
  padding-left:30px;position:relative;margin-bottom:12px;color:var(--charcoal);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:16px;height:16px;
  background:var(--yellow);border:2px solid var(--ink);
}

/* ---- Stats / trust strip ---- */
.trust-strip{background:var(--ink);color:var(--paper);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;}
@media (max-width:760px){ .trust-grid{grid-template-columns:repeat(2,1fr);} }
.trust-grid .item h3{color:var(--yellow);font-size:1.15rem;margin-bottom:.3em;}
.trust-grid .item p{color:#C9C6B9;font-size:.92rem;margin:0;}

/* ---- CTA banner ---- */
.cta-banner{
  background:var(--yellow);
  border-top:3px solid var(--ink);border-bottom:3px solid var(--ink);
}
.cta-banner .row{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-banner h2{margin-bottom:.2em;font-size:clamp(1.4rem,3vw,2rem);}
.cta-banner p{color:var(--charcoal);margin:0;}

/* ---- Contact cards ---- */
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:2px solid var(--ink);}
@media (max-width:900px){ .contact-grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:560px){ .contact-grid{grid-template-columns:1fr;} }
.contact-card{
  padding:30px 24px;background:var(--white);
  border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);
}
.contact-grid .contact-card:nth-child(4n){border-right:none;}
@media (max-width:900px){ .contact-grid .contact-card:nth-child(2n){border-right:none;} }
@media (max-width:560px){ .contact-grid .contact-card{border-right:none !important;} }
.contact-card .icon{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:var(--yellow);border:2px solid var(--ink);margin-bottom:16px;
  font-family:'Kanit',sans-serif;font-weight:700;
}
.contact-card h4{font-size:1.02rem;margin-bottom:.4em;}
.contact-card p, .contact-card a{color:var(--gray);font-size:.94rem;}
.contact-card a.link{color:var(--ink);font-weight:600;text-decoration:underline;text-underline-offset:3px;}

.map-wrap{border:2px solid var(--ink);overflow:hidden;}
.map-wrap iframe{display:block;width:100%;height:420px;border:0;filter:grayscale(15%) contrast(1.02);}

/* ---- Footer ---- */
.site-footer{background:var(--charcoal);color:#D8D5C7;}
.footer-top{padding:64px 0 40px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
@media (max-width:820px){ .footer-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:520px){ .footer-grid{grid-template-columns:1fr;} }
.footer-grid h5{
  font-family:'Kanit',sans-serif;color:var(--yellow);font-size:.85rem;letter-spacing:2px;
  text-transform:uppercase;margin-bottom:16px;
}
.footer-grid p, .footer-grid a{font-size:.92rem;color:#C4C1B3;line-height:1.9;}
.footer-grid a:hover{color:var(--yellow);}
.footer-brand .th{font-family:'Kanit',sans-serif;font-weight:800;color:var(--white);font-size:1.3rem;}
.footer-bottom{
  border-top:1px solid #43423A;padding:20px 0;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:.85rem;color:#9C9A8C;
}
.footer-bottom a{color:#9C9A8C;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom a:hover{color:var(--yellow);}

/* ---- Page hero (inner pages) ---- */
.page-hero{
  background:var(--ink);color:var(--white);padding:72px 0 56px;position:relative;
}
.page-hero h1{color:var(--white);font-size:clamp(1.8rem,4vw,2.8rem);}
.page-hero p{color:#C9C6B9;max-width:640px;}
.breadcrumb{font-family:'Kanit',sans-serif;font-size:.82rem;color:#9C9A8C;margin-bottom:16px;letter-spacing:.5px;}
.breadcrumb a:hover{color:var(--yellow);}

/* ---- Generic content (privacy) ---- */
.prose h2{margin-top:1.6em;font-size:1.35rem;}
.prose h3{margin-top:1.2em;font-size:1.1rem;}
.prose p, .prose li{color:var(--charcoal);}
.prose ul{padding-left:20px;}
.prose{max-width:800px;}
.updated-note{
  display:inline-block;font-family:'Kanit',sans-serif;font-size:.82rem;
  background:var(--paper-dim);border:1px solid var(--line);padding:8px 14px;margin-bottom:8px;
}

/* utility */
.text-center{text-align:center;margin-left:auto;margin-right:auto;}
.mt-0{margin-top:0;}