/* ============================================================
   PRIME TIME — design tokens
   Grounded in the brand's own tire-catalog world: asphalt, steel,
   spec sheets. Left-aligned, dense, engineered — not a consumer
   storefront.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@500;700;800;900&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

:root{
  --asphalt: #14171C;
  --asphalt-2: #1B2027;
  --asphalt-3: #232A33;
  --steel-blue: #1857D9;
  --sky-blue: #3AA7F0;
  --paper: #F4F5F2;
  --paper-2: #EAECE6;
  --ink: #14171C;
  --steel-grey: #5A6270;
  --line: #D8DBD3;
  --line-dark: #2E3540;
  --amber: #EFA23A;
  --white: #FFFFFF;

  --font-head: 'Archivo', 'IBM Plex Sans', sans-serif;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;

  --container: 1180px;
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }

h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:800;
  line-height:1.08;
  letter-spacing:-0.01em;
}

.wrap{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--steel-blue);
  outline-offset:2px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; scroll-behavior:auto !important; }
}

/* ---------------- top bar ---------------- */
.topbar{
  background:var(--asphalt);
  color:#9AA3AF;
  font-size:13px;
  border-bottom:1px solid var(--line-dark);
}
.topbar .wrap{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding-top:8px;
  padding-bottom:8px;
  gap:16px;
  flex-wrap:wrap;
}
.topbar a{ color:#C4CAD2; }
.topbar a:hover{ color:var(--sky-blue); }
.topbar-links{ display:flex; gap:22px; }

/* ---------------- header / nav ---------------- */
header.site{
  background:var(--asphalt);
  border-bottom:1px solid var(--line-dark);
  position:relative;
  z-index:50;
}
header.site .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:16px;
  padding-bottom:16px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand img{ height:44px; width:auto; }
.brand-text{ color:var(--white); font-family:var(--font-head); font-weight:800; font-size:19px; letter-spacing:-0.01em; line-height:1.1; }
.brand-text span{ display:block; font-family:var(--font-body); font-weight:500; font-size:11px; letter-spacing:.08em; color:var(--sky-blue); margin-top:2px; }

nav.main{ display:flex; gap:6px; }
nav.main a{
  color:#C4CAD2;
  font-size:14.5px;
  font-weight:600;
  padding:9px 14px;
  border-radius:3px;
}
nav.main a:hover{ color:var(--white); background:var(--asphalt-3); }
nav.main a.current{ color:var(--white); background:var(--steel-blue); }

.nav-cta{
  background:var(--steel-blue);
  color:var(--white) !important;
  font-weight:700 !important;
}
.nav-cta:hover{ background:#1349BE !important; }

.menu-toggle{ display:none; background:none; border:1px solid var(--line-dark); color:var(--white); padding:8px 10px; border-radius:3px; font-size:14px; }

@media (max-width:900px){
  nav.main{
    display:none;
    position:absolute; left:0; right:0; top:100%;
    background:var(--asphalt-2);
    flex-direction:column;
    padding:10px 20px 18px;
    border-bottom:1px solid var(--line-dark);
  }
  nav.main.open{ display:flex; }
  .menu-toggle{ display:block; }
}

/* ---------------- buttons ---------------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-body);
  font-weight:700;
  font-size:14.5px;
  padding:13px 22px;
  border-radius:3px;
  border:1px solid transparent;
  cursor:pointer;
}
.btn-primary{ background:var(--steel-blue); color:var(--white); }
.btn-primary:hover{ background:#1349BE; }
.btn-ghost{ background:transparent; color:var(--white); border-color:#3B4350; }
.btn-ghost:hover{ border-color:var(--sky-blue); color:var(--sky-blue); }
.btn-dark{ background:var(--asphalt); color:var(--white); }
.btn-dark:hover{ background:var(--asphalt-2); }
.btn-outline{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-outline:hover{ border-color:var(--steel-blue); color:var(--steel-blue); }

/* ---------------- hero ---------------- */
.hero{
  background:var(--asphalt);
  color:var(--white);
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line-dark);
}
.hero .wrap{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
  padding-top:78px;
  padding-bottom:78px;
  position:relative;
  z-index:2;
}
.eyebrow-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:700;
  color:var(--asphalt);
  background:var(--sky-blue);
  padding:6px 11px;
  border-radius:2px;
  margin-bottom:22px;
}
.hero h1{
  font-size:52px;
  color:var(--white);
  margin-bottom:22px;
}
.hero h1 em{ font-style:normal; color:var(--sky-blue); }
.hero p.lead{
  font-size:17.5px;
  color:#B7BEC8;
  max-width:46ch;
  margin-bottom:32px;
}
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }

.hero-figure{
  position:relative;
  border:1px solid var(--line-dark);
  background:var(--asphalt-2);
  padding:26px;
}
.hero-figure img{ width:100%; }
.spec-strip{
  margin-top:20px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line-dark);
  padding-top:18px;
}
.spec-strip div{ border-left:1px solid var(--line-dark); padding-left:14px; }
.spec-strip div:first-child{ border-left:none; padding-left:0; }
.spec-strip .num{ font-family:var(--font-head); font-weight:800; font-size:22px; color:var(--white); }
.spec-strip .lbl{ font-size:11.5px; color:#8890 9B; color:#8B93A0; margin-top:3px; }

.tread-accent{
  position:absolute; right:-120px; top:-160px; width:520px; height:520px;
  border-radius:50%;
  border:70px solid var(--asphalt-3);
  opacity:.55;
  z-index:1;
}

@media (max-width:900px){
  .hero .wrap{ grid-template-columns:1fr; padding-top:44px; padding-bottom:44px; gap:36px; }
  .hero h1{ font-size:36px; }
  .tread-accent{ display:none; }
}

/* ---------------- section framing ---------------- */
section{ padding:74px 0; }
.section-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:24px;
  margin-bottom:38px;
  border-bottom:1px solid var(--line);
  padding-bottom:22px;
}
.section-head .kicker{
  font-size:12.5px;
  font-weight:700;
  color:var(--steel-blue);
  letter-spacing:.04em;
  margin-bottom:8px;
}
.section-head h2{ font-size:30px; color:var(--ink); max-width:20ch; }
.section-head p{ color:var(--steel-grey); max-width:38ch; font-size:15px; }
.section-dark{ background:var(--asphalt); color:var(--white); }
.section-dark .section-head{ border-color:var(--line-dark); }
.section-dark .section-head h2{ color:var(--white); }
.section-dark .section-head p{ color:#98A0AC; }
.section-paper2{ background:var(--paper-2); }

/* ---------------- about / stats ---------------- */
.about-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
}
.about-grid p{ color:var(--steel-grey); font-size:15.5px; margin-bottom:16px; max-width:56ch; }
.stat-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.stat-cell{ background:var(--paper); padding:22px; }
.stat-cell .num{ font-family:var(--font-head); font-size:30px; font-weight:800; color:var(--steel-blue); }
.stat-cell .lbl{ font-size:13px; color:var(--steel-grey); margin-top:6px; }

@media (max-width:820px){ .about-grid{ grid-template-columns:1fr; } }

/* ---------------- category / product cards ---------------- */
.cat-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.cat-card{
  background:var(--paper);
  padding:30px;
  display:flex;
  flex-direction:column;
  gap:10px;
  min-height:190px;
}
.cat-card .tag{ font-size:11.5px; font-weight:700; color:var(--steel-blue); letter-spacing:.04em; }
.cat-card h3{ font-size:20px; }
.cat-card p{ color:var(--steel-grey); font-size:14px; flex-grow:1; }
.cat-card .go{ font-size:13.5px; font-weight:700; color:var(--ink); }
.cat-card:hover .go{ color:var(--steel-blue); }

@media (max-width:820px){ .cat-grid{ grid-template-columns:1fr; } }

/* ---------------- product spec card ---------------- */
.model-card{
  border:1px solid var(--line);
  background:var(--white);
  margin-bottom:1px;
}
.model-head{
  display:grid;
  grid-template-columns:120px 1fr auto;
  gap:20px;
  align-items:center;
  padding:20px 24px;
  border-bottom:1px solid var(--line);
  background:var(--paper-2);
}
.model-head .model-id{ font-family:var(--font-head); font-weight:900; font-size:22px; color:var(--asphalt); }
.model-head .model-app{ font-size:13.5px; color:var(--steel-grey); }
.model-head .model-code{
  font-size:12px; font-weight:700; color:var(--white);
  background:var(--steel-blue); padding:5px 10px; border-radius:2px; white-space:nowrap;
}
.model-body{ padding:22px 24px; }
.model-body ul.feat{ margin-bottom:16px; }
.model-body ul.feat li{
  font-size:14px; color:var(--ink); padding-left:16px; position:relative; margin-bottom:6px;
}
.model-body ul.feat li::before{
  content:''; position:absolute; left:0; top:8px; width:6px; height:2px; background:var(--steel-blue);
}
table.spec{ width:100%; border-collapse:collapse; font-size:13px; }
table.spec th{
  text-align:left; font-weight:700; color:var(--steel-grey); text-transform:none;
  padding:8px 10px; border-bottom:2px solid var(--line); font-size:11.5px; letter-spacing:.02em;
  white-space:nowrap;
}
table.spec td{ padding:9px 10px; border-bottom:1px solid var(--line); white-space:nowrap; }
table.spec tr:last-child td{ border-bottom:none; }
.spec-scroll{ overflow-x:auto; }
@media (max-width:640px){
  .model-head{ grid-template-columns:1fr; gap:8px; }
  .model-head .model-code{ justify-self:start; }
}

/* ---------------- tabs ---------------- */
.tabbar{
  display:flex; gap:2px; flex-wrap:wrap; margin-bottom:32px; border-bottom:1px solid var(--line);
}
.tabbar button{
  font-family:var(--font-body); font-weight:700; font-size:14px; color:var(--steel-grey);
  background:transparent; border:none; padding:13px 18px; cursor:pointer; border-bottom:2px solid transparent;
}
.tabbar button.active{ color:var(--steel-blue); border-color:var(--steel-blue); }
.tabbar button:hover{ color:var(--ink); }
.tabpanel{ display:none; }
.tabpanel.active{ display:block; }

/* ---------------- partners ---------------- */
.partner-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.partner-cell{
  background:var(--white);
  aspect-ratio:1.4/1;
  display:flex; align-items:center; justify-content:center;
  padding:22px;
}
.partner-cell img{ max-height:64px; width:auto; max-width:100%; object-fit:contain; }
@media (max-width:820px){ .partner-grid{ grid-template-columns:repeat(2,1fr); } }

/* ---------------- CTA strip ---------------- */
.cta-strip{
  background:var(--steel-blue);
  color:var(--white);
}
.cta-strip .wrap{
  display:flex; justify-content:space-between; align-items:center; gap:24px; flex-wrap:wrap;
  padding-top:44px; padding-bottom:44px;
}
.cta-strip h3{ font-size:26px; color:var(--white); }
.cta-strip p{ color:#D9E5FB; margin-top:6px; font-size:14.5px; }

/* ---------------- contact ---------------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:56px; }
.contact-list li{ display:flex; gap:16px; padding:18px 0; border-bottom:1px solid var(--line); }
.contact-list .k{ font-size:12px; font-weight:700; color:var(--steel-blue); width:110px; flex-shrink:0; padding-top:2px; letter-spacing:.03em; }
.contact-list .v{ font-size:15.5px; }
.contact-list .v a:hover{ color:var(--steel-blue); }

form.inquiry{ display:flex; flex-direction:column; gap:14px; }
form.inquiry label{ font-size:12.5px; font-weight:700; color:var(--steel-grey); margin-bottom:6px; display:block; letter-spacing:.02em; }
form.inquiry input, form.inquiry select, form.inquiry textarea{
  width:100%; border:1px solid var(--line); background:var(--white); padding:12px 13px;
  font-family:var(--font-body); font-size:14.5px; border-radius:2px;
}
form.inquiry textarea{ min-height:110px; resize:vertical; }
form.inquiry input:focus, form.inquiry select:focus, form.inquiry textarea:focus{ border-color:var(--steel-blue); }

@media (max-width:820px){ .contact-grid{ grid-template-columns:1fr; } }

/* ---------------- footer ---------------- */
footer.site{ background:var(--asphalt); color:#98A0AC; border-top:1px solid var(--line-dark); }
footer.site .wrap{ padding-top:52px; padding-bottom:32px; }
.footer-grid{
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:32px; padding-bottom:32px; border-bottom:1px solid var(--line-dark);
}
.footer-grid h4{ color:var(--white); font-size:13px; letter-spacing:.03em; margin-bottom:14px; }
.footer-grid ul li{ margin-bottom:9px; font-size:14px; }
.footer-grid ul li a:hover{ color:var(--sky-blue); }
.footer-brand .brand-text{ margin-bottom:14px; }
.footer-brand p{ font-size:13.5px; max-width:32ch; line-height:1.6; }
.footer-bottom{ display:flex; justify-content:space-between; padding-top:22px; font-size:12.5px; flex-wrap:wrap; gap:10px; }

@media (max-width:820px){
  .footer-grid{ grid-template-columns:1fr 1fr; }
}

/* ---------------- misc utility ---------------- */
.mt-0{ margin-top:0; }
.text-center{ text-align:center; }
.small-note{ font-size:12.5px; color:var(--steel-grey); }
.divider{ height:1px; background:var(--line); border:none; margin:0; }