/* ST Chem Solutions — corporate site */
:root{
  --blue:#1A6FB5; --blue-d:#145A93; --blue-50:#EAF3FB; --blue-100:#D6E7F6;
  --green:#00A651; --green-d:#008C44;
  --ink:#0B1A2B; --ink-2:#4A5A6B; --ink-3:#7B8A99;
  --line:#E3E9EF; --gray:#F6F8FA; --foot:#DCEBF7;
  --head:"Outfit","Segoe UI",Arial,sans-serif;
  --body:"DM Sans","Segoe UI",Arial,sans-serif;
  --wrap:1200px; --r:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:var(--body);font-size:16px;line-height:1.7;color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}
h1,h2,h3{font-family:var(--head);font-weight:400;line-height:1.15;text-transform:uppercase;letter-spacing:.01em;color:var(--ink)}
h2{font-size:clamp(1.9rem,3.6vw,2.8rem)}
h3{font-size:1.2rem;font-weight:500}
p{color:var(--ink-2)}

/* pill label + centred section title */
.pill{display:inline-block;font-family:var(--head);font-size:.74rem;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--blue);background:var(--blue-50);padding:5px 14px;border-radius:999px}
.title{text-align:center;max-width:760px;margin:0 auto 56px}
.title h2{margin-top:14px}
.title h2::after{content:"";display:block;width:40px;height:2px;background:var(--blue);margin:18px auto 0}
.title p{margin:18px auto 0;max-width:620px}
.sec{padding-block:clamp(72px,9vw,112px)}
.sec.gray{background:var(--gray)}

.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--head);font-size:.86rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;padding:13px 24px;border-radius:8px;border:1.5px solid transparent;cursor:pointer;transition:background .2s,border-color .2s,color .2s}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-d)}
.btn-green{background:var(--green);color:#fff}
.btn-green:hover{background:var(--green-d)}
.btn-line{border-color:rgba(255,255,255,.6);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.12)}
.link{font-size:.88rem;font-weight:500;color:var(--blue)}
.link:hover{text-decoration:underline}

/* header */
header.site{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:20px;height:80px}
.brand img{height:50px;width:auto}
.menu{display:flex;align-items:center;gap:4px}
.menu a{font-family:var(--head);font-size:.84rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);padding:9px 14px;border-radius:8px;position:relative}
.menu a:hover{color:var(--blue)}
.menu a.on{color:var(--blue);background:var(--blue-50)}
.menu a.on::after{content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;background:var(--blue)}
.menu .btn{margin-left:10px;padding:11px 18px;color:#fff}
.menu .btn:hover{color:#fff}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:1.25rem;color:var(--ink);cursor:pointer}
@media (max-width:1060px){
  .burger{display:block}
  .menu{display:none;position:absolute;left:0;right:0;top:80px;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--line);padding:8px 16px 18px;box-shadow:0 16px 30px rgba(11,26,43,.08)}
  .menu.open{display:flex}
  .menu a{padding:13px 8px;border-radius:0;border-bottom:1px solid var(--gray)}
  .menu a.on::after{display:none}
  .menu .btn{margin:12px 0 0;justify-content:center;border-radius:8px}
  .brand img{height:42px}
}

/* home hero */
.hero{position:relative;min-height:calc(100vh - 80px);max-height:900px;display:flex;align-items:center;background:#06121F;color:#fff;overflow:hidden}
.hero .bg{position:absolute;inset:0}
.hero .bg img{width:100%;height:100%;object-fit:cover;object-position:70% 40%}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,14,26,.92) 0%,rgba(4,14,26,.7) 50%,rgba(4,14,26,.25) 100%)}
.hero .wrap{position:relative;z-index:1;width:100%;padding-block:90px}
.chip{display:inline-block;font-family:var(--head);font-size:.76rem;letter-spacing:.24em;text-transform:uppercase;color:#fff;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.08);border-radius:999px;padding:7px 16px}
.hero h1{color:#fff;font-size:clamp(2.4rem,5.4vw,4.4rem);max-width:18ch;margin:22px 0 22px}
.hero h1 span{color:#4FC07A}
.hero p{color:rgba(255,255,255,.85);font-size:1.12rem;max-width:56ch}
.hero p b{color:#fff}
.hero .ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}

/* page banner */
.banner{position:relative;background:#06121F;color:#fff;overflow:hidden}
.banner .bg{position:absolute;inset:0}
.banner .bg img{width:100%;height:100%;object-fit:cover}
.banner::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,14,26,.9) 0%,rgba(4,14,26,.55) 100%)}
.banner .wrap{position:relative;z-index:1;padding-block:clamp(70px,9vw,110px)}
.banner .pill{color:#fff;background:rgba(255,255,255,.14)}
.banner h1{color:#fff;font-size:clamp(2.4rem,5.4vw,4rem);margin-top:16px}
.banner h1::after{content:"";display:block;width:46px;height:2px;background:#4FC07A;margin-top:18px}
.banner p{color:rgba(255,255,255,.82);margin-top:18px;max-width:60ch}

/* who we are */
.who{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,6vw,80px);align-items:center}
.logo-card{background:linear-gradient(145deg,var(--blue-50),#fff 70%);border:1px solid var(--line);border-radius:18px;box-shadow:0 20px 50px rgba(11,26,43,.08);padding:clamp(36px,6vw,70px);display:grid;place-items:center;aspect-ratio:16/11}
.logo-card img{width:100%;max-width:440px}
.who p+p{margin-top:14px}
.who p b{color:var(--blue);font-weight:600}
.badges{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 30px}
.badge{display:flex;align-items:center;gap:10px;background:var(--blue-50);border:1px solid var(--blue-100);border-radius:10px;padding:12px 16px;font-size:.88rem;font-weight:500;color:var(--blue-d)}
.badge svg{flex:0 0 auto}
@media (max-width:900px){.who{grid-template-columns:1fr}}

/* stats */
.stats-wrap{background:linear-gradient(135deg,var(--blue-50),#fff 55%,#F2FAF5);padding-block:56px}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px 20px;text-align:center}
.stat .ic{width:46px;height:46px;border-radius:10px;background:var(--blue-50);color:var(--blue);display:grid;place-items:center;margin:0 auto 16px}
.stat b{display:block;font-family:var(--head);font-size:2.1rem;font-weight:600;line-height:1.1;color:var(--ink)}
.stat span{display:block;margin-top:6px;font-family:var(--head);font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
@media (max-width:900px){.stats{grid-template-columns:1fr 1fr}}

/* service cards */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .25s,transform .25s}
.card:hover{box-shadow:0 18px 40px rgba(11,26,43,.1);transform:translateY(-3px)}
.card .ph{aspect-ratio:16/9;overflow:hidden;background:var(--gray)}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.card:hover .ph img{transform:scale(1.04)}
.card .bd{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card p{font-size:.94rem}
.card .link{margin-top:auto}
@media (max-width:1000px){.cards{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.cards{grid-template-columns:1fr}}

/* simple icon features */
.feats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.feat{border:1px solid var(--line);border-radius:var(--r);padding:28px 24px;background:#fff}
.feat .ic{width:46px;height:46px;border-radius:10px;background:var(--blue-50);color:var(--blue);display:grid;place-items:center;margin-bottom:16px}
.feat h3{margin-bottom:8px}
.feat p{font-size:.93rem}
@media (max-width:1000px){.feats{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.feats{grid-template-columns:1fr}}

/* CTA */
.cta{background:var(--blue);color:#fff}
.cta .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding-block:52px}
.cta h2{color:#fff;font-size:clamp(1.5rem,2.8vw,2.1rem)}
.cta p{color:rgba(255,255,255,.85);margin-top:6px}
.cta .btn{background:#fff;color:var(--blue)}
.cta .btn:hover{background:var(--blue-50)}

/* alternating image/text rows */
.rows{display:grid;gap:clamp(56px,8vw,96px)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,6vw,72px);align-items:center}
.row.flip .ph{order:2}
.row .ph{border-radius:18px;overflow:hidden;box-shadow:0 20px 50px rgba(11,26,43,.1);aspect-ratio:16/10}
.row .ph img{width:100%;height:100%;object-fit:cover}
.row h2{font-size:clamp(1.5rem,2.6vw,2rem);margin:14px 0 14px}
.row p+p{margin-top:12px}
.row ul{margin-top:16px;display:grid;gap:8px}
.row li,.ticks li{position:relative;padding-left:22px;color:var(--ink-2)}
.row li::before,.ticks li::before{content:"";position:absolute;left:2px;top:.6em;width:7px;height:7px;border-radius:50%;background:var(--blue)}
@media (max-width:900px){.row{grid-template-columns:1fr}.row.flip .ph{order:0}}

/* product category blocks */
.cat{display:grid;grid-template-columns:.85fr 2fr;gap:clamp(28px,4vw,48px);align-items:start}
.cat + .cat{margin-top:clamp(64px,8vw,96px)}
.cat .side{position:sticky;top:110px}
.cat .side .ph{border-radius:16px;overflow:hidden;aspect-ratio:1/1;box-shadow:0 18px 40px rgba(11,26,43,.1)}
.cat .side .ph img{width:100%;height:100%;object-fit:cover}
.cat .side h2{font-size:clamp(1.5rem,2.4vw,1.9rem);margin:18px 0 10px}
.cat .side p{font-size:.95rem}
.groups{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.group{border:1px solid var(--line);border-radius:var(--r);padding:20px 22px 18px;background:#fff;display:flex;flex-direction:column}
.group h3{font-size:.92rem;letter-spacing:.06em;color:var(--blue);margin-bottom:12px}
.group ul{display:grid;gap:7px;margin-bottom:16px}
.group li{position:relative;padding-left:16px;font-size:.92rem;color:var(--ink-2)}
.group li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;background:var(--blue)}
.group li small{color:var(--ink-3)}
.group .req{margin-top:auto;align-self:flex-start;font:inherit;font-size:.82rem;font-weight:500;color:var(--green-d);background:none;border:0;padding:0;cursor:pointer}
.group .req:hover{text-decoration:underline}
@media (max-width:900px){.cat{grid-template-columns:1fr}.cat .side{position:static}.cat .side .ph{aspect-ratio:16/9}}
@media (max-width:600px){.groups{grid-template-columns:1fr}}

/* tables (export / quality) */
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.fact{border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;background:#fff}
.fact h3{margin-bottom:14px;color:var(--blue)}
@media (max-width:900px){.facts{grid-template-columns:1fr}}
.ticks{display:grid;gap:8px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;counter-reset:s}
.step{border:1px solid var(--line);border-radius:var(--r);padding:26px 22px;background:#fff}
.step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--blue);color:#fff;font-family:var(--head);font-weight:500;margin-bottom:14px}
.step h3{margin-bottom:8px}
.step p{font-size:.92rem}
@media (max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}

/* contact */
.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(28px,5vw,56px);align-items:start}
@media (max-width:900px){.contact{grid-template-columns:1fr}}
.cinfo{display:grid;gap:16px}
.cbox{display:flex;gap:16px;align-items:flex-start;border:1px solid var(--line);border-radius:var(--r);padding:20px}
.cbox .ic{flex:0 0 44px;height:44px;border-radius:10px;background:var(--blue-50);color:var(--blue);display:grid;place-items:center}
.cbox h3{font-size:.86rem;letter-spacing:.1em;color:var(--ink-3);margin-bottom:2px}
.cbox p,.cbox a{color:var(--ink);font-weight:500}
.cbox a:hover{color:var(--blue)}
.form{border:1px solid var(--line);border-radius:18px;padding:clamp(22px,3vw,36px);background:#fff;box-shadow:0 20px 50px rgba(11,26,43,.06)}
.form h2{font-size:1.7rem;margin-bottom:6px}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:560px){.frow{grid-template-columns:1fr}}
.field{margin-bottom:14px}
.field label{display:block;font-size:.84rem;font-weight:500;color:var(--ink-2);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:.95rem;padding:11px 13px;border:1px solid #CFD8E1;border-radius:8px;background:#fff;color:var(--ink)}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-50)}
.cbx{display:flex;flex-wrap:wrap;gap:18px}
.cbx label{display:flex;align-items:center;gap:8px;font-weight:400;color:var(--ink-2)}
.cbx input{width:auto;accent-color:var(--blue)}
.status{font-size:.92rem;margin-top:12px;color:var(--ink-3)}
.status.ok{color:var(--green-d);font-weight:500}
.status.bad{color:#C0272D}

/* modal */
.modal{position:fixed;inset:0;z-index:100;background:rgba(6,18,31,.6);display:flex;align-items:flex-start;justify-content:center;padding:6vh 16px;overflow-y:auto}
.dialog{position:relative;width:100%;max-width:600px;background:#fff;border-radius:16px;padding:32px;box-shadow:0 30px 70px rgba(0,0,0,.3)}
.x{position:absolute;top:10px;right:14px;border:0;background:none;font-size:1.8rem;color:var(--ink-3);cursor:pointer}
.dialog h2{font-size:1.6rem;margin-top:12px}
.dialog .prod{color:var(--blue);font-weight:500;margin:6px 0 20px}
.note{font-size:.8rem;color:var(--ink-3);margin-top:10px}

/* footer */
footer{background:var(--foot);color:var(--ink-2);padding-block:64px 26px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:40px}
.fgrid img{height:54px;width:auto;margin-bottom:16px}
.fgrid p{font-size:.92rem}
footer h4{font-family:var(--head);font-weight:500;font-size:.86rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink);margin-bottom:16px}
footer li{margin-bottom:9px;font-size:.93rem}
footer a:hover{color:var(--blue)}
.fc li{display:flex;gap:10px;align-items:flex-start}
.fc svg{flex:0 0 auto;margin-top:4px;color:var(--blue)}
.fbottom{margin-top:44px;padding-top:20px;border-top:1px solid #C4DAEC;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:.82rem;color:var(--ink-3)}
@media (max-width:900px){.fgrid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.fgrid{grid-template-columns:1fr}}

/* WhatsApp + back-to-top */
.float{position:fixed;right:18px;bottom:18px;z-index:40;display:grid;gap:10px}
.float a,.float button{width:50px;height:50px;border-radius:50%;display:grid;place-items:center;border:0;cursor:pointer;box-shadow:0 8px 20px rgba(0,0,0,.18)}
.float .wa{background:#25D366;color:#fff}
.float .top{background:var(--blue);color:#fff}

/* ---- additions (reference sites) ---- */
.topbar{background:#0B1A2B;color:rgba(255,255,255,.82);font-size:.82rem}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:38px;flex-wrap:wrap}
.topbar a,.topbar .tb-r{display:inline-flex;align-items:center;gap:7px}
.topbar .tb-l{display:flex;gap:22px;flex-wrap:wrap}
.topbar a:hover{color:#fff}
.topbar .tb-wa{color:#4FC07A}
@media (max-width:760px){.topbar .tb-r{display:none}.topbar .tb-l{gap:14px}.topbar .tb-wa{display:none}}

.eyebrow{display:inline-flex;align-items:center;gap:12px;font-family:var(--head);font-size:.8rem;font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:#4FC07A}
.eyebrow::before{content:"";width:28px;height:2px;background:currentColor}
.hero h1{max-width:none;font-size:clamp(2.2rem,4.4vw,3.7rem)}

.pgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.pcard{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 22px 22px;transition:border-color .2s,box-shadow .2s,transform .2s}
.pcard:hover{border-color:var(--blue);box-shadow:0 14px 32px rgba(11,26,43,.08);transform:translateY(-3px)}
.pn{font-family:var(--head);font-size:2rem;font-weight:300;color:var(--blue-100);line-height:1}
.ptag{display:block;margin-top:14px;font-family:var(--head);font-size:.72rem;font-weight:500;letter-spacing:.18em;text-transform:uppercase;color:var(--green)}
.pcard h3{margin:6px 0 8px;font-size:1.08rem}
.pcard p{font-size:.92rem;line-height:1.6}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:16px 0 18px}
.chips span{font-size:.74rem;font-weight:500;color:var(--blue);background:var(--blue-50);border-radius:6px;padding:3px 9px}
.pgo{margin-top:auto;font-family:var(--head);font-size:.8rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--blue)}
.pnote{text-align:center;margin-top:34px;font-size:.92rem;color:var(--ink-3)}
@media (max-width:1060px){.pgrid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.pgrid{grid-template-columns:1fr}}

.spot{background:#0B1A2B;color:#fff}
.spot .wrap{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,6vw,80px);align-items:center;padding-block:clamp(72px,9vw,112px)}
.spot-ph{border-radius:var(--r);overflow:hidden;aspect-ratio:4/3}
.spot-ph img{width:100%;height:100%;object-fit:cover}
.spot h2{color:#fff;margin:16px 0 18px}
.spot p{color:rgba(255,255,255,.78)}
.spot-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:30px 0 34px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14)}
.spot-list b{display:block;font-family:var(--head);font-weight:400;font-size:1.3rem;color:#fff;text-transform:uppercase}
.spot-list span{font-size:.86rem;color:rgba(255,255,255,.65)}
@media (max-width:900px){.spot .wrap{grid-template-columns:1fr}}
@media (max-width:520px){.spot-list{grid-template-columns:1fr}}

.facility{display:grid;grid-template-columns:1.1fr 1fr;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.facility .ph{min-height:320px}
.facility .ph img{width:100%;height:100%;object-fit:cover}
.fbody{padding:clamp(26px,4vw,44px)}
.fbody .ptag{margin-top:0}
.fbody h3{font-size:1.5rem;margin:8px 0 20px}
.fbody dl{margin-bottom:24px}
.fbody dl div{display:grid;grid-template-columns:130px 1fr;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:.94rem}
.fbody dt{color:var(--ink-3)}
.fbody dd{color:var(--ink);font-weight:500}
@media (max-width:900px){.facility{grid-template-columns:1fr}.facility .ph{min-height:0;aspect-ratio:16/9}}
@media (max-width:460px){.fbody dl div{grid-template-columns:1fr;gap:2px}}

.faq{max-width:860px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:12px}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;font-weight:600;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--head);font-size:1.5rem;font-weight:300;color:var(--blue);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 22px 20px}
.gallery{display:grid;grid-template-columns:2fr 1fr;gap:20px;height:clamp(320px,42vw,520px)}
.gallery figure{border-radius:var(--r);overflow:hidden;box-shadow:0 18px 40px rgba(11,26,43,.1)}
.gallery img{width:100%;height:100%;object-fit:cover}
@media (max-width:800px){.gallery{grid-template-columns:1fr;height:auto}.gallery figure{aspect-ratio:4/3}}