/* ============================================================
   S K ENTERPRISES — Car Care Division
   Design tokens
   Navy   : brand primary, drawn from the SK logo mark
   Green  : logo swoosh accent, used for active/positive cues
   Cap Red: literal colour of every bottle cap in the product
            photography — reused everywhere as the site's own
            "cap dot" marker (bullets, tags, numerals)
   ============================================================ */

:root{
  --navy:        #0E2A4D;
  --navy-dark:   #081A30;
  --navy-soft:   #17385F;
  --green:       #4C9A2A;
  --green-dark:  #37731D;
  --cap-red:     #D8342A;
  --cap-red-dark:#B5261E;
  --paper:       #F4F6F9;
  --paper-warm:  #ECEFF4;
  --white:       #FFFFFF;
  --ink:         #182130;
  --steel:       #5C6B7E;
  --steel-light: #93A1B3;
  --line:        #DBE1E9;

  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Inter", "Segoe UI", Arial, sans-serif;
  --font-mono: "Roboto Mono", "Courier New", monospace;

  --maxw: 1180px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
h1,h2,h3,h4{
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--navy);
  margin: 0 0 .5em 0;
  line-height: 1.15;
}
.wrap{ max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.mono{ font-family: var(--font-mono); }

/* -------------------- Skip link / focus -------------------- */
.skip-link{
  position:absolute; left:-999px; top:auto;
  background:var(--cap-red); color:#fff; padding:8px 14px; z-index:999;
}
.skip-link:focus{ left:12px; top:12px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 3px solid var(--green);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; transition-duration:0.001ms !important; }
}

/* -------------------- Top utility bar -------------------- */
.topbar{
  background: var(--navy-dark);
  color: #C9D4E2;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .03em;
}
.topbar .wrap{
  display:flex; justify-content:space-between; align-items:center;
  padding: 7px 24px; flex-wrap: wrap; gap:6px;
}
.topbar a{ color:#C9D4E2; }
.topbar a:hover{ color:#fff; }
.topbar .dom-link{
  color:#8FBEF5;
}
.topbar .sep{ opacity:.4; margin:0 8px; }

/* -------------------- Header / Nav -------------------- */
header.site{
  background: var(--navy);
  position: sticky; top:0; z-index: 100;
  box-shadow: 0 2px 14px rgba(0,0,0,.18);
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  padding: 14px 24px;
}
.brand{
  display:flex; align-items:center; gap:12px;
  color:#fff;
}
.brand-mark{
  width:42px; height:42px; border-radius:8px;
  background: linear-gradient(135deg, var(--green) 0%, var(--navy-soft) 55%, var(--cap-red) 100%);
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-display); font-weight:700; color:#fff; font-size:17px;
  letter-spacing:0;
}
.brand-text .name{
  font-family: var(--font-display); font-size: 19px; letter-spacing:.04em;
  text-transform:uppercase; color:#fff; font-weight:600;
}
.brand-text .tag{
  display:block; font-size:11px; color:#9FB2C9; letter-spacing:.12em; text-transform:uppercase;
  margin-top:1px;
}
nav.main{ display:flex; align-items:center; gap: 28px; }
nav.main a{
  color:#D6DEEA; font-family: var(--font-display); font-size:14px;
  letter-spacing:.05em; text-transform:uppercase; padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}
nav.main a:hover, nav.main a.active{
  color:#fff; border-color: var(--green);
}
.nav-cta{
  background: var(--cap-red); color:#fff !important; padding:9px 18px !important;
  border-radius: 3px; border-bottom: none !important;
}
.nav-cta:hover{ background: var(--cap-red-dark) !important; color:#fff !important; }
.nav-toggle{ display:none; }

@media (max-width: 860px){
  nav.main{
    position:absolute; top:100%; left:0; right:0;
    background: var(--navy-dark); flex-direction:column; align-items:flex-start;
    padding: 10px 24px 18px; gap:14px; display:none;
  }
  nav.main.open{ display:flex; }
  .nav-toggle{
    display:block; background:none; border:1px solid #3A5378; color:#fff;
    font-size:22px; width:42px; height:38px; border-radius:4px; cursor:pointer;
  }
  .nav-cta{ margin-top:4px; }
}

/* -------------------- Eyebrow / section labels -------------------- */
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family: var(--font-mono); font-size:12.5px; letter-spacing:.12em;
  text-transform:uppercase; color: var(--cap-red); font-weight:600;
  margin-bottom: 10px;
}
.eyebrow::before{
  content:""; width:9px; height:9px; border-radius:50%;
  background: var(--cap-red); display:inline-block;
}
.section{ padding: 76px 0; }
.section.tight{ padding: 52px 0; }
.section-head{ max-width: 680px; margin-bottom: 40px; }
.section-head p{ color: var(--steel); font-size: 16px; }
.on-navy{ background: var(--navy); color:#E6ECF4; }
.on-navy h2, .on-navy h3{ color:#fff; }
.on-navy .section-head p{ color:#AFC0D6; }
.on-paper-warm{ background: var(--paper-warm); }
.on-white{ background:#fff; }

.divider{
  height:6px; width:100%;
  background: repeating-linear-gradient(90deg, var(--cap-red) 0 26px, var(--green) 26px 52px, var(--navy) 52px 78px);
  opacity:.9;
}

/* -------------------- Buttons -------------------- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family: var(--font-display); text-transform:uppercase; letter-spacing:.05em;
  font-size:14px; padding: 13px 26px; border-radius:3px; border:2px solid transparent;
  cursor:pointer; transition: transform .12s ease, background .15s, color .15s, border-color .15s;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{ background: var(--cap-red); color:#fff; }
.btn-primary:hover{ background: var(--cap-red-dark); }
.btn-outline{ background:transparent; border-color:#fff; color:#fff; }
.btn-outline:hover{ background:#fff; color: var(--navy); }
.btn-navy{ background: var(--navy); color:#fff; }
.btn-navy:hover{ background: var(--navy-dark); }

/* -------------------- Hero -------------------- */
.hero{
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-dark) 100%);
  color:#fff; position:relative; overflow:hidden;
}
.hero .wrap{
  display:grid; grid-template-columns: 1.05fr .95fr; gap: 40px;
  align-items:center; padding: 64px 24px 0;
}
.hero-badge{
  display:inline-flex; align-items:center; gap:10px;
  background: rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.18);
  padding:7px 14px; border-radius: 100px; font-family:var(--font-mono);
  font-size:12.5px; letter-spacing:.05em; color:#CFE0F5; margin-bottom:22px;
}
.hero-badge b{ color:#fff; }
.hero h1{
  color:#fff; font-size: clamp(34px, 4.6vw, 54px); margin-bottom:18px;
}
.hero h1 span{ color: var(--green); }
.hero p.lead{
  font-size:17px; color:#C4D2E4; max-width:520px; margin-bottom: 30px;
}
.hero-cta-row{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:36px; }
.hero-stats{
  display:flex; gap:34px; flex-wrap:wrap; border-top:1px solid rgba(255,255,255,.15);
  padding-top: 22px;
}
.hero-stats .stat b{
  font-family: var(--font-display); font-size:30px; color:#fff; display:block;
}
.hero-stats .stat span{ font-size:12.5px; color:#9FB2C9; letter-spacing:.05em; text-transform:uppercase; }
.hero-img-wrap{ position:relative; padding-bottom:40px; }
.hero-img-wrap img{ border-radius: 6px; }

/* -------------------- Cap-dot bullet list -------------------- */
ul.cap-list{ list-style:none; margin:0; padding:0; }
ul.cap-list li{
  position:relative; padding-left: 26px; margin-bottom: 12px; color: var(--steel);
}
ul.cap-list li::before{
  content:""; position:absolute; left:0; top:8px;
  width:11px; height:11px; border-radius:50%;
  background: var(--cap-red);
  box-shadow: 0 0 0 3px rgba(216,52,42,.14);
}

/* -------------------- Cards -------------------- */
.grid{ display:grid; gap: 26px; }
.grid.cols-2{ grid-template-columns: repeat(2,1fr); }
.grid.cols-3{ grid-template-columns: repeat(3,1fr); }
.grid.cols-4{ grid-template-columns: repeat(4,1fr); }

.card{
  background:#fff; border:1px solid var(--line); border-radius:6px;
  overflow:hidden; transition: box-shadow .18s, transform .18s;
}
.card:hover{ box-shadow: 0 14px 30px rgba(14,42,77,.12); transform: translateY(-3px); }
.card .card-media{
  background: var(--paper-warm); padding: 18px; display:flex; align-items:center; justify-content:center;
  height: 230px;
}
.card .card-media img{ max-height: 100%; width:auto; margin:0 auto; }
.card .card-body{ padding: 18px 20px 22px; }
.card .cat{
  font-family: var(--font-mono); font-size:11.5px; letter-spacing:.08em; text-transform:uppercase;
  color: var(--green-dark); font-weight:600;
}
.card h3{ font-size:18px; margin: 6px 0 8px; }
.card p{ font-size:14px; color: var(--steel); margin:0 0 12px; }
.size-tags{ display:flex; gap:6px; flex-wrap:wrap; }
.size-tag{
  font-family: var(--font-mono); font-size:11.5px; background: var(--paper-warm);
  border:1px solid var(--line); color: var(--navy); padding:3px 9px; border-radius:100px;
}

/* -------------------- Chemical cards -------------------- */
.chem-card{ background:#fff; border:1px solid var(--line); border-radius:6px; overflow:hidden; }
.chem-card .chem-media{ background: var(--paper-warm); padding:16px; display:flex; justify-content:center; height:190px; align-items:center; font-size:56px; }
.chem-card .chem-media img{ max-height:100%; }
.chem-card .chem-body{ padding:16px 18px 20px; }
.chem-card h4{ font-size:15.5px; margin-bottom:4px; }
.chem-card .role{
  display:inline-block; font-family:var(--font-mono); font-size:11px; letter-spacing:.04em;
  color:#fff; background: var(--navy-soft); padding:3px 9px; border-radius:3px; margin-bottom:10px;
}
.chem-card .used-in{ font-size:13px; color: var(--steel); border-top:1px dashed var(--line); padding-top:10px; margin-top:6px; }
.chem-card .used-in b{ color: var(--navy); display:block; font-size:11.5px; letter-spacing:.05em; text-transform:uppercase; margin-bottom:4px; }

/* -------------------- Stripe strip (used-for tags) -------------------- */
.strip{
  display:flex; align-items:center; gap: 40px; overflow:hidden;
  padding: 22px 0; background: var(--paper-warm); border-top:1px solid var(--line); border-bottom:1px solid var(--line);
}
.strip .wrap{ display:flex; align-items:center; gap:40px; flex-wrap:wrap; justify-content:center; }
.strip .item{ display:flex; align-items:center; gap:10px; font-family:var(--font-display); text-transform:uppercase; font-size:13px; color: var(--steel); letter-spacing:.03em; }
.strip .item::before{ content:"●"; color: var(--cap-red); font-size:10px; }

/* -------------------- Timeline (heritage) -------------------- */
.timeline{ display:flex; gap:0; position:relative; margin-top:30px; }
.timeline::before{
  content:""; position:absolute; top:11px; left:0; right:0; height:2px; background: var(--line);
}
.tl-item{ flex:1; text-align:center; position:relative; padding-top:30px; }
.tl-item .dot{
  position:absolute; top:0; left:50%; transform:translateX(-50%);
  width:22px; height:22px; border-radius:50%; background: var(--cap-red);
  border:4px solid var(--paper);
}
.tl-item .yr{ font-family:var(--font-display); font-size:20px; color: var(--navy); }
.tl-item p{ font-size:13px; color:var(--steel); padding:0 10px; }

/* -------------------- Two column feature -------------------- */
.feature{ display:grid; grid-template-columns: 1fr 1fr; gap:50px; align-items:center; }
.feature.reverse{ direction: rtl; }
.feature.reverse > *{ direction: ltr; }
.feature img{ border-radius:6px; }

/* -------------------- Table (specs) -------------------- */
table.spec{ width:100%; border-collapse: collapse; font-size:14.5px; }
table.spec th, table.spec td{ padding:12px 14px; border-bottom:1px solid var(--line); text-align:left; }
table.spec th{
  font-family:var(--font-display); text-transform:uppercase; letter-spacing:.04em;
  font-size:12.5px; color:#fff; background: var(--navy);
}
table.spec tr:nth-child(even){ background: var(--paper-warm); }

/* -------------------- Contact -------------------- */
.contact-grid{ display:grid; grid-template-columns: .9fr 1.1fr; gap:50px; }
.info-block{ display:flex; gap:16px; margin-bottom:26px; }
.info-icon{
  width:44px; height:44px; border-radius:50%; background: var(--navy);
  color:#fff; display:flex; align-items:center; justify-content:center; flex-shrink:0; font-size:18px;
}
.info-block h4{ margin:0 0 4px; font-size:15px; color: var(--navy); text-transform:uppercase; letter-spacing:.03em; }
.info-block p, .info-block a{ font-size:15px; color: var(--steel); margin:0; }
.info-block a:hover{ color: var(--cap-red); }

form.contact-form{ background:#fff; border:1px solid var(--line); border-radius:8px; padding: 30px; }
form.contact-form label{
  display:block; font-family:var(--font-mono); font-size:12px; letter-spacing:.04em;
  text-transform:uppercase; color: var(--navy); margin-bottom:6px; margin-top:16px;
}
form.contact-form input, form.contact-form select, form.contact-form textarea{
  width:100%; padding:11px 13px; border:1px solid var(--line); border-radius:4px;
  font-family: var(--font-body); font-size:14.5px; background: var(--paper);
}
form.contact-form input:focus, form.contact-form textarea:focus, form.contact-form select:focus{
  border-color: var(--navy);
}
.map-embed{ border:1px solid var(--line); border-radius:8px; overflow:hidden; margin-top:24px; }
.map-embed iframe{ width:100%; height:280px; border:0; display:block; }

/* -------------------- FAQ -------------------- */
details.faq{ border-bottom:1px solid var(--line); padding: 16px 0; }
details.faq summary{
  cursor:pointer; font-family:var(--font-display); text-transform:uppercase; letter-spacing:.02em;
  font-size:15px; color: var(--navy); list-style:none; display:flex; justify-content:space-between; align-items:center;
}
details.faq summary::-webkit-details-marker{ display:none; }
details.faq summary::after{ content:"+"; font-size:22px; color: var(--cap-red); }
details.faq[open] summary::after{ content:"–"; }
details.faq p{ color: var(--steel); margin-top:10px; font-size:14.5px; }

/* -------------------- Footer -------------------- */
footer.site{ background: var(--navy-dark); color:#AEBBCC; padding-top: 56px; }
footer.site .wrap{ padding-bottom: 26px; }
.footer-grid{ display:grid; grid-template-columns: 1.3fr 1fr 1fr 1.2fr; gap: 34px; padding-bottom: 40px; border-bottom:1px solid rgba(255,255,255,.08); }
.footer-grid h5{
  color:#fff; font-family:var(--font-display); text-transform:uppercase; letter-spacing:.05em;
  font-size:14px; margin-bottom:16px;
}
.footer-grid ul{ list-style:none; margin:0; padding:0; }
.footer-grid li{ margin-bottom:9px; font-size:14px; }
.footer-grid a:hover{ color:#fff; }
.footer-brand p{ font-size:13.5px; color:#8FA0B6; max-width:280px; }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; padding: 20px 0 30px;
  font-size:12.5px; color:#7488A0; flex-wrap:wrap; gap:10px;
}
.footer-bottom a{ color:#9FB2C9; }
.footer-bottom a:hover{ color:#fff; }

@media (max-width: 900px){
  .hero .wrap{ grid-template-columns: 1fr; padding-top:40px; }
  .grid.cols-4{ grid-template-columns: repeat(2,1fr); }
  .grid.cols-3{ grid-template-columns: repeat(2,1fr); }
  .grid.cols-2{ grid-template-columns: 1fr; }
  .feature{ grid-template-columns: 1fr; }
  .feature.reverse{ direction: ltr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .timeline{ flex-wrap:wrap; }
}
@media (max-width: 560px){
  .grid.cols-4, .grid.cols-3{ grid-template-columns: 1fr; }
  .hero-stats{ gap:20px; }
  .footer-grid{ grid-template-columns: 1fr; }
}