/* ============================================================
   EGP Automotive Belts — site styles
   Identity: industrial charcoal base, EGP orange signature,
   gold (box top / kevlar tooth), concrete off-white.
   ============================================================ */

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

:root{
  --ink:#141414;
  --ink-2:#1b1b1b;
  --ink-3:#232323;
  --ink-line:#2e2e2e;
  --steel:#8b8d8f;
  --steel-2:#6f7173;
  --concrete:#f3f2ee;
  --concrete-2:#e9e7e0;
  --line:#dad8d0;
  --orange:#ec6a1e;
  --orange-deep:#cf5410;
  --gold:#e9a513;
  --white:#ffffff;
  --text:#1a1a1a;
  --text-soft:#54524d;

  --flag-red:#d10000;
  --flag-gold:#ffce00;

  --ff-display:'Archivo',system-ui,sans-serif;
  --ff-body:'Hanken Grotesk',system-ui,sans-serif;
  --ff-mono:'IBM Plex Mono',ui-monospace,monospace;

  --maxw:1240px;
  --pad:clamp(20px,5vw,64px);
  --radius:3px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-body);
  color:var(--text);
  background:var(--concrete);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--ff-display);font-weight:800;line-height:1.02;letter-spacing:-.02em;margin:0}
p{margin:0 0 1rem}

/* ---------- shared utilities ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}
.mono{font-family:var(--ff-mono)}
.eyebrow{
  font-family:var(--ff-mono);
  font-size:.72rem;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--orange);
  display:inline-flex;align-items:center;gap:.6em;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--orange);display:inline-block}
.accent{color:var(--orange)}
.chev{color:var(--orange);font-weight:700}

/* German flag micro-stripe */
.flag{display:inline-block;width:30px;height:11px;border-radius:1px;overflow:hidden;vertical-align:middle;
  background:linear-gradient(180deg,#111 0 33.3%,var(--flag-red) 33.3% 66.6%,var(--flag-gold) 66.6% 100%);
  box-shadow:0 0 0 1px rgba(0,0,0,.15)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--ff-mono);font-size:.78rem;font-weight:600;
  letter-spacing:.12em;text-transform:uppercase;
  padding:.95em 1.5em;border:1px solid transparent;border-radius:var(--radius);
  cursor:pointer;transition:transform .15s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn .arrow{transition:transform .2s ease}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-deep)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{border-color:var(--orange);color:var(--orange)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#000}

/* blueprint background motif (signature) */
.blueprint{position:absolute;inset:0;pointer-events:none;opacity:.5;mix-blend-mode:normal}

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(20,20,20,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--ink-line);
}
.nav{display:flex;align-items:center;gap:2rem;height:68px}
.brand{display:flex;align-items:center;gap:.65rem;color:#fff}
.brand .egp{font-family:var(--ff-display);font-weight:900;font-size:1.35rem;letter-spacing:.04em}
.brand .egp sup{color:var(--orange);font-size:.5em}
.brand .divider{width:1px;height:22px;background:var(--ink-line)}
.brand .sub{font-family:var(--ff-mono);font-size:.58rem;letter-spacing:.22em;color:var(--steel);text-transform:uppercase;line-height:1.3;max-width:90px}
.nav-links{display:flex;gap:.35rem;margin-left:auto;align-items:center}
.nav-links a{
  font-family:var(--ff-mono);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;
  color:#cfcfcf;padding:.55em .85em;border-radius:var(--radius);transition:color .2s,background .2s;position:relative;
}
.nav-links a:hover{color:#fff}
.nav-links a.active{color:var(--orange)}
.nav-links a.active::after{content:"";position:absolute;left:.85em;right:.85em;bottom:.15em;height:2px;background:var(--orange)}
.nav-cta{margin-left:.6rem}
.nav-toggle{display:none;background:none;border:1px solid var(--ink-line);border-radius:var(--radius);
  width:42px;height:38px;cursor:pointer;flex-direction:column;gap:4px;align-items:center;justify-content:center;margin-left:auto}
.nav-toggle span{width:18px;height:2px;background:#fff;display:block;transition:.25s}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============================================================
   HERO
   ============================================================ */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;min-height:min(82vh,720px)}
.hero-left{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:center;
  padding:clamp(40px,7vw,90px) clamp(24px,5vw,70px);max-width:760px;margin-left:auto;width:100%}
.hero-right{position:relative;overflow:hidden;background:#fff}
.hero-right img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.hero-right::before{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:linear-gradient(90deg,var(--ink) 0%,rgba(20,20,20,.55) 14%,rgba(20,20,20,0) 42%)}
.hero-tag{margin-bottom:1.4rem}
.hero h1{font-size:clamp(2.6rem,6.4vw,5rem);font-weight:900;letter-spacing:-.03em}
.hero h1 .line2{color:#fff}
.hero h1 .stroke{color:transparent;-webkit-text-stroke:1.4px var(--steel)}
.hero-cats{font-family:var(--ff-display);font-weight:700;font-size:clamp(1rem,2.2vw,1.4rem);margin:1.1rem 0 1.4rem;color:#fff}
.hero-cats span{color:var(--orange);margin-inline:.4em;font-weight:800}
.hero-cats span:first-child{margin-left:0}
.hero p.lede{color:#c8c8c6;font-size:1.06rem;max-width:46ch;margin-bottom:2rem}
.hero-actions{display:flex;gap:.8rem;flex-wrap:wrap}
.hero-meta{display:flex;gap:2.2rem;margin-top:2.6rem;flex-wrap:wrap}
.hero-meta .item{display:flex;flex-direction:column;gap:.15rem}
.hero-meta .num{font-family:var(--ff-display);font-weight:800;font-size:1.7rem;color:#fff;line-height:1}
.hero-meta .num em{color:var(--orange);font-style:normal}
.hero-meta .lbl{font-family:var(--ff-mono);font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;color:var(--steel)}

/* thin orange rule strip under hero (catalog motif) */
.rule-strip{height:6px;background:var(--ink);position:relative}
.rule-strip::after{content:"";position:absolute;right:0;top:0;height:100%;width:46%;background:var(--orange)}

/* tagline ribbon */
.ribbon{background:var(--ink);color:#fff;border-top:1px solid var(--ink-line)}
.ribbon .wrap{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;
  padding-block:1rem;font-family:var(--ff-mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;flex-wrap:wrap}
.ribbon b{color:#fff;font-weight:600}
.ribbon .accent{color:var(--orange)}

/* ============================================================
   SECTIONS (light)
   ============================================================ */
.section{padding-block:clamp(60px,9vw,120px);position:relative}
.section.dark{background:var(--ink);color:#fff}
.section.concrete2{background:var(--concrete-2)}
.sec-head{max-width:760px;margin-bottom:3rem}
.sec-head h2{font-size:clamp(2rem,4.6vw,3.4rem);margin:1rem 0 1rem}
.sec-head .stroke{color:transparent;-webkit-text-stroke:1.3px currentColor;opacity:.85}
.section.dark .sec-head p,.section.dark p.muted{color:#bdbdbb}
.sec-head p{color:var(--text-soft);font-size:1.08rem}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}

/* about split */
.about{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(30px,5vw,70px);align-items:center}
.about .brands{display:grid;gap:1.5rem;margin-top:1.5rem}
.about .brandrow{display:grid;grid-template-columns:auto 1fr;gap:1.2rem;align-items:start;
  padding:1.3rem 0;border-top:1px solid var(--line)}
.about .brandrow .tag{font-family:var(--ff-display);font-weight:900;font-size:1.5rem;color:var(--ink)}
.about .brandrow .tag.mvp{color:#1b3a8c}
.about .brandrow p{margin:0;color:var(--text-soft)}
.about-figure{position:relative;background:var(--ink);border-radius:var(--radius);overflow:hidden;aspect-ratio:4/5}
.about-figure img{width:100%;height:100%;object-fit:cover}
.about-figure .cap{position:absolute;left:0;bottom:0;right:0;padding:1.1rem 1.3rem;
  background:linear-gradient(0deg,rgba(0,0,0,.82),transparent);
  font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:#fff}
.about-figure .cap b{color:var(--orange)}

/* ============================================================
   PRODUCT RANGE CARDS
   ============================================================ */
.range{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.pcard{position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s}
.pcard:hover{transform:translateY(-5px);box-shadow:0 18px 40px -22px rgba(0,0,0,.45);border-color:var(--orange)}
.pcard .num{position:absolute;top:14px;left:14px;z-index:3;font-family:var(--ff-mono);font-size:.7rem;font-weight:600;
  color:var(--orange);border:1px solid var(--orange);padding:.2em .5em;border-radius:2px;background:rgba(255,255,255,.85)}
.pcard .media{aspect-ratio:5/4;background:var(--concrete);overflow:hidden}
.pcard .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.pcard:hover .media img{transform:scale(1.05)}
.pcard .body{padding:1.5rem 1.5rem 1.7rem;display:flex;flex-direction:column;flex:1}
.pcard h3{font-size:1.5rem;margin-bottom:.2rem}
.pcard h3 .accent{font-weight:900}
.pcard .body p{color:var(--text-soft);font-size:.95rem;flex:1}
.pcard .go{margin-top:1rem;font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink);display:inline-flex;align-items:center;gap:.5em}
.pcard:hover .go{color:var(--orange)}
.pcard .go .arrow{transition:transform .2s ease}
.pcard:hover .go .arrow{transform:translateX(4px)}

/* ============================================================
   FEATURE GRID (quality / why)
   ============================================================ */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--ink-line);border:1px solid var(--ink-line);border-radius:var(--radius);overflow:hidden}
.section:not(.dark) .feat-grid{background:var(--line);border-color:var(--line)}
.feat{background:var(--ink-2);padding:1.8rem 1.6rem;position:relative}
.section:not(.dark) .feat{background:var(--white)}
.feat .ix{font-family:var(--ff-mono);font-size:.72rem;color:var(--orange);letter-spacing:.1em;margin-bottom:1rem;display:block}
.feat h4{font-size:1.12rem;margin-bottom:.5rem}
.feat p{margin:0;font-size:.92rem;color:var(--steel)}
.section:not(.dark) .feat p{color:var(--text-soft)}
.feat .ico{width:34px;height:34px;margin-bottom:1rem;color:var(--orange)}

/* color / craft gallery band */
.gallery-band{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--ink-line)}
.gallery-band figure{margin:0;position:relative;aspect-ratio:1;overflow:hidden;background:#fff}
.gallery-band img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.gallery-band figure:hover img{transform:scale(1.07)}
.gallery-band figcaption{position:absolute;left:0;bottom:0;padding:.7rem .9rem;
  font-family:var(--ff-mono);font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;color:#fff;
  background:linear-gradient(0deg,rgba(0,0,0,.7),transparent);width:100%}

/* CTA strip */
.cta-strip{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.cta-strip .wrap{display:flex;align-items:center;justify-content:space-between;gap:2rem;
  padding-block:clamp(40px,6vw,72px);position:relative;z-index:2;flex-wrap:wrap}
.cta-strip h2{font-size:clamp(1.8rem,4vw,2.8rem)}
.cta-strip p{color:#bdbdbb;margin:.6rem 0 0;max-width:46ch}

/* ============================================================
   PRODUCTS PAGE
   ============================================================ */
.page-hero{background:var(--ink);color:#fff;position:relative;overflow:hidden;padding-block:clamp(56px,8vw,92px)}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:clamp(2.4rem,6vw,4.4rem);margin:1rem 0 .8rem}
.page-hero p{color:#c4c4c2;max-width:54ch;font-size:1.08rem}
.crumbs{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--steel)}
.crumbs a:hover{color:var(--orange)}
.crumbs span{color:var(--orange)}

.filterbar{position:sticky;top:68px;z-index:30;background:var(--concrete);border-bottom:1px solid var(--line)}
.filterbar .wrap{display:flex;gap:.5rem;padding-block:.9rem;flex-wrap:wrap;align-items:center}
.chip{font-family:var(--ff-mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;
  padding:.55em 1.1em;border:1px solid var(--line);border-radius:40px;background:#fff;cursor:pointer;
  transition:.2s;color:var(--text)}
.chip:hover{border-color:var(--orange);color:var(--orange)}
.chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.chip .ct{opacity:.6;margin-left:.4em}

.cat-block{padding-block:clamp(48px,7vw,86px);scroll-margin-top:130px}
.cat-block:nth-child(even){background:var(--concrete-2)}
.cat-head{display:grid;grid-template-columns:auto 1fr;gap:1.5rem;align-items:end;margin-bottom:2.4rem}
.cat-head .ix{font-family:var(--ff-mono);font-size:.8rem;color:var(--orange);border:1px solid var(--orange);
  border-radius:2px;padding:.5em .7em;align-self:start}
.cat-head h2{font-size:clamp(1.8rem,4.5vw,3rem)}
.cat-head p{margin:.6rem 0 0;color:var(--text-soft);max-width:60ch}
.cat-feats{display:flex;gap:1.4rem;flex-wrap:wrap;margin-top:1rem}
.cat-feats span{font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.06em;color:var(--text-soft);
  display:inline-flex;align-items:center;gap:.45em}
.cat-feats span::before{content:"›";color:var(--orange);font-weight:700}

.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}
.prod{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .2s,box-shadow .2s,border-color .2s}
.prod:hover{transform:translateY(-4px);box-shadow:0 16px 34px -22px rgba(0,0,0,.4);border-color:var(--orange)}
.prod .media{aspect-ratio:1;background:var(--concrete);overflow:hidden;position:relative}
.prod .media img{width:100%;height:100%;object-fit:cover}
.prod .badge{position:absolute;top:10px;left:10px;font-family:var(--ff-mono);font-size:.62rem;letter-spacing:.08em;
  text-transform:uppercase;background:var(--ink);color:#fff;padding:.3em .6em;border-radius:2px}
.prod .badge.box{background:var(--gold);color:#1a1a1a}
.prod .pbody{padding:1rem 1.1rem 1.2rem}
.prod .pn{font-family:var(--ff-mono);font-weight:600;font-size:.95rem;color:var(--ink)}
.prod .desc{font-size:.8rem;color:var(--text-soft);margin-top:.2rem}
.cat-block.hide,.prod.hide{display:none}

/* spec table from catalog */
.spec-wrap{margin-top:2.4rem;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:.86rem;min-width:680px}
table.spec th{background:var(--ink);color:#fff;font-family:var(--ff-mono);font-weight:500;font-size:.72rem;
  letter-spacing:.08em;text-transform:uppercase;text-align:left;padding:.85em 1em;white-space:nowrap}
table.spec td{padding:.8em 1em;border-bottom:1px solid var(--line);font-family:var(--ff-mono);color:var(--text)}
table.spec tr:last-child td{border-bottom:none}
table.spec tbody tr:nth-child(even){background:var(--concrete)}
.spec-note{font-size:.78rem;color:var(--text-soft);margin-top:.8rem;font-family:var(--ff-mono)}

/* ============================================================
   CROSS-REFERENCE TOOL
   ============================================================ */
.ref-tool{padding-block:clamp(40px,6vw,72px)}
.search-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(20px,3vw,34px);
  box-shadow:0 24px 60px -40px rgba(0,0,0,.4)}
.search-row{position:relative;display:flex;align-items:center;border:2px solid var(--ink);border-radius:var(--radius);
  background:#fff;overflow:hidden}
.search-row svg{position:absolute;left:16px;width:20px;height:20px;color:var(--steel-2);pointer-events:none}
#refInput{flex:1;border:0;outline:0;font-family:var(--ff-mono);font-size:1.05rem;padding:1em 1em 1em 3.1em;background:transparent;letter-spacing:.02em}
#refInput::placeholder{color:#b3b1aa}
.clear-btn{border:0;background:transparent;font-family:var(--ff-mono);font-size:1.3rem;color:var(--steel-2);cursor:pointer;padding:0 1rem;display:none}
.clear-btn.show{display:block}
.ref-chips{display:flex;gap:.5rem;margin-top:1.1rem;flex-wrap:wrap}
.ref-status{font-family:var(--ff-mono);font-size:.78rem;color:var(--text-soft);margin-top:1.2rem;letter-spacing:.04em}
.ref-status b{color:var(--ink)}

.results{margin-top:1.6rem;display:grid;gap:1rem}
.rcard{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.rcard-top{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  padding:1rem 1.2rem;background:var(--ink);color:#fff}
.rcard-top .pn{font-family:var(--ff-mono);font-weight:600;font-size:1.15rem}
.rcard-top .pn mark{background:var(--orange);color:#fff;padding:0 .15em;border-radius:2px}
.rcard-top .type{font-family:var(--ff-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;
  padding:.35em .7em;border-radius:40px;border:1px solid rgba(255,255,255,.3)}
.rcard-top .type.t-timing{color:var(--gold);border-color:var(--gold)}
.rcard-top .type.t-pk{color:var(--orange);border-color:var(--orange)}
.rcard-top .type.t-v{color:#8fb7ff;border-color:#8fb7ff}
.xref{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1px;background:var(--line)}
.xref .cell{background:#fff;padding:.85rem 1.1rem}
.xref .k{font-family:var(--ff-mono);font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--steel-2);margin-bottom:.25rem}
.xref .v{font-family:var(--ff-mono);font-size:.9rem;color:var(--ink);word-break:break-word}
.xref .v mark{background:#ffe6b0;padding:0 .1em;border-radius:2px}
.rcard-foot{padding:.9rem 1.2rem;border-top:1px solid var(--line);font-size:.84rem;color:var(--text-soft);background:var(--concrete)}
.rcard-foot .note{font-style:italic}
.empty{text-align:center;padding:3rem 1rem;color:var(--text-soft)}
.empty .big{font-family:var(--ff-display);font-size:1.5rem;color:var(--ink);margin-bottom:.5rem}
.empty .mono{font-family:var(--ff-mono);font-size:.85rem}
.more-row{text-align:center;padding-top:.5rem}

/* ============================================================
   WARRANTY
   ============================================================ */
.warr-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:clamp(30px,5vw,64px);align-items:start}
.coverage{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;margin-top:.5rem}
.cov{border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem;background:#fff}
.cov.yes{border-top:3px solid var(--orange)}
.cov.no{border-top:3px solid var(--steel)}
.cov h4{font-size:1.05rem;margin-bottom:.8rem;display:flex;align-items:center;gap:.5rem}
.cov ul{margin:0;padding:0;list-style:none}
.cov li{font-size:.9rem;color:var(--text-soft);padding:.4em 0 .4em 1.4em;position:relative;border-bottom:1px dashed var(--line)}
.cov li:last-child{border-bottom:none}
.cov.yes li::before{content:"✓";position:absolute;left:0;color:var(--orange);font-weight:700}
.cov.no li::before{content:"✕";position:absolute;left:0;color:var(--steel)}

.steps{counter-reset:s;display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:1rem}
.step{background:#fff;padding:1.3rem 1.5rem;display:grid;grid-template-columns:auto 1fr;gap:1.2rem;align-items:start}
.step .n{counter-increment:s;font-family:var(--ff-display);font-weight:900;font-size:1.6rem;color:var(--orange);line-height:1}
.step .n::before{content:counter(s,decimal-leading-zero)}
.step h4{font-size:1.05rem;margin-bottom:.3rem}
.step p{margin:0;font-size:.9rem;color:var(--text-soft)}

.warr-aside{background:var(--ink);color:#fff;border-radius:var(--radius);padding:1.8rem;position:sticky;top:90px}
.warr-aside h3{font-size:1.3rem;margin-bottom:1rem}
.warr-aside .field{margin-bottom:1rem}
.warr-aside label{font-family:var(--ff-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--steel);display:block;margin-bottom:.4rem}
.warr-aside input,.warr-aside select,.warr-aside textarea{width:100%;background:var(--ink-2);border:1px solid var(--ink-line);
  border-radius:var(--radius);color:#fff;font-family:var(--ff-mono);font-size:.88rem;padding:.7em .8em;outline:0;transition:border-color .2s}
.warr-aside input:focus,.warr-aside select:focus,.warr-aside textarea:focus{border-color:var(--orange)}
.warr-aside .btn{width:100%;justify-content:center;margin-top:.5rem}
.form-msg{font-family:var(--ff-mono);font-size:.78rem;color:var(--gold);margin-top:.9rem;min-height:1.2em;text-align:center}

.terms{margin-top:3rem;border-top:1px solid var(--line);padding-top:2rem}
.terms h3{font-size:1.2rem;margin-bottom:1rem}
.terms ol{margin:0;padding-left:1.3rem;color:var(--text-soft);font-size:.92rem}
.terms li{margin-bottom:.7rem}
.disclaimer{background:var(--concrete-2);border-left:3px solid var(--orange);padding:1.2rem 1.4rem;margin-top:2rem;
  font-size:.86rem;color:var(--text-soft);border-radius:0 var(--radius) var(--radius) 0}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{background:var(--ink);color:#fff;border-top:4px solid var(--orange)}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2.5rem;padding-block:clamp(48px,6vw,72px)}
.footer-brand .egp{font-family:var(--ff-display);font-weight:900;font-size:1.6rem}
.footer-brand .egp sup{color:var(--orange);font-size:.5em}
.footer-brand p{color:var(--steel);font-size:.9rem;margin-top:1rem;max-width:34ch}
.footer-brand .tagline{font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:#fff;margin-top:1.4rem}
.footer-brand .tagline b{color:var(--orange)}
.fcol h5{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--steel);margin:0 0 1.1rem;font-weight:500}
.fcol a,.fcol p{display:block;color:#cfcfcf;font-size:.9rem;margin-bottom:.6rem}
.fcol a:hover{color:var(--orange)}
.contact-line{display:flex;gap:.6rem;align-items:flex-start;margin-bottom:.9rem;color:#cfcfcf;font-size:.88rem}
.contact-line svg{width:16px;height:16px;color:var(--orange);flex-shrink:0;margin-top:3px}
.footer-bottom{border-top:1px solid var(--ink-line)}
.footer-bottom .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding-block:1.3rem;font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.08em;color:var(--steel);flex-wrap:wrap}
.footer-bottom .flag-line{display:flex;align-items:center;gap:.6rem}

/* reveal animation */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .hero-right{display:none}
  .hero-left{max-width:none}
  .about{grid-template-columns:1fr}
  .about-figure{aspect-ratio:16/10;max-width:520px}
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .warr-grid{grid-template-columns:1fr}
  .warr-aside{position:static}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .nav-links{position:fixed;inset:68px 0 auto 0;flex-direction:column;background:var(--ink);
    border-bottom:1px solid var(--ink-line);padding:1rem var(--pad);gap:.2rem;display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:.9em .4em;width:100%}
  .nav-links a.active::after{display:none}
  .nav-cta{margin:.6rem 0 0}
  .nav-toggle{display:flex}
  .range{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .gallery-band{grid-template-columns:repeat(2,1fr)}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .coverage{grid-template-columns:1fr}
  .cat-head{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .xref{grid-template-columns:1fr 1fr}
}
@media(max-width:440px){
  .prod-grid{grid-template-columns:1fr 1fr}
  .hero-meta{gap:1.4rem}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ===== additions: wide about figure ===== */
.about-figure-wide{aspect-ratio:3/2}
@media(max-width:1024px){ .about-figure-wide{aspect-ratio:16/10;max-width:none} }

/* ===== timing belt<->box auto crossfade (pure CSS) ===== */
.prod .media.swap{position:relative}
.prod .media.swap img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.prod .media.swap .sw-belt{opacity:1;animation:swapBelt 6s ease-in-out infinite}
.prod .media.swap .sw-box{opacity:0;animation:swapBox 6s ease-in-out infinite}
@keyframes swapBelt{0%,42%{opacity:1}50%,92%{opacity:0}100%{opacity:1}}
@keyframes swapBox{0%,42%{opacity:0}50%,92%{opacity:1}100%{opacity:0}}
/* stagger cards so they don't all flip at once */
.prod:nth-child(3) .media.swap img{animation-delay:-1s}
.prod:nth-child(4) .media.swap img{animation-delay:-2s}
.prod:nth-child(5) .media.swap img{animation-delay:-3s}
.prod:nth-child(6) .media.swap img{animation-delay:-4s}
.prod:nth-child(7) .media.swap img{animation-delay:-5s}
/* small corner hint that the image alternates */
.prod .media.swap::after{content:"belt \2194 box";position:absolute;bottom:8px;right:8px;z-index:3;font:600 10px/1 var(--mono,monospace);letter-spacing:.04em;color:#fff;background:rgba(20,20,20,.62);padding:4px 7px;border-radius:999px;text-transform:uppercase}

/* ===== about figure: portrait variant for the dark belt+box photo ===== */
.about-figure-tall{aspect-ratio:4/5;max-width:460px;margin-left:auto;margin-right:auto}
@media(max-width:1024px){ .about-figure-tall{aspect-ratio:4/5;max-width:420px} }

/* ===== language switch (EN | TR) ===== */
.lang-switch{order:5;display:inline-flex;align-items:center;gap:2px;border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:3px;margin-left:.5rem}
.lang-switch button{font:700 10px/1 var(--mono,monospace);letter-spacing:.04em;color:var(--concrete,#f3f2ee);background:transparent;border:0;cursor:pointer;padding:5px 7px;border-radius:999px;transition:background .2s,color .2s}
.lang-switch button:hover{color:#fff}
.lang-switch button.on{background:var(--orange);color:#141414}
@media(max-width:860px){
  .lang-switch{order:1;margin-left:auto;margin-right:.4rem}
  .nav-toggle{order:2}
}

/* ===== construction cutaway grid (Material, rib and finish) ===== */
.constr-grid{display:grid;gap:1.4rem;max-width:1000px;margin:2.2rem auto 0;padding:0 var(--pad)}
@media(min-width:920px){ .constr-grid{grid-template-columns:1fr;gap:1.8rem} }
.constr{background:transparent;border:0;overflow:hidden}
.constr img{display:block;width:100%;height:auto}
.cl-stage{position:relative;overflow:hidden;line-height:0}
.cl-scan{position:absolute;left:0;right:0;top:0;height:16%;pointer-events:none;opacity:0;background:linear-gradient(180deg,rgba(236,106,30,0) 0%,rgba(236,106,30,.18) 55%,rgba(236,106,30,.7) 100%)}
@media (prefers-reduced-motion: no-preference){
  html.js .constr .cl-stage img{clip-path:inset(0 0 100% 0);transition:clip-path 2.1s cubic-bezier(.3,.05,.2,1)}
  html.js .constr.in .cl-stage img{clip-path:inset(0 0 0% 0)}
  html.js .constr.in .cl-scan{animation:clScan 2.1s cubic-bezier(.3,.05,.2,1) forwards}
  html.js .constr-grid .constr:nth-child(2) .cl-stage img{transition-delay:.28s}
  html.js .constr-grid .constr:nth-child(3) .cl-stage img{transition-delay:.56s}
  html.js .constr-grid .constr:nth-child(2).in .cl-scan{animation-delay:.28s}
  html.js .constr-grid .constr:nth-child(3).in .cl-scan{animation-delay:.56s}
}
@keyframes clScan{0%{opacity:0;transform:translateY(-100%)}12%{opacity:1}88%{opacity:1}100%{opacity:0;transform:translateY(640%)}}
.constr figcaption{padding:.6rem 0 0;font-family:var(--mono,monospace);font-weight:700;font-size:.78rem;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-2,#5b5b57);text-align:center}
.gallery-sec{padding-top:clamp(3rem,6vw,5rem)}

/* ===== RTL (Arabic / Persian) ===== */
html[dir=rtl] body,html[dir=rtl] h1,html[dir=rtl] h2,html[dir=rtl] h3,html[dir=rtl] h4,html[dir=rtl] p,html[dir=rtl] a,html[dir=rtl] span,html[dir=rtl] li,html[dir=rtl] button,html[dir=rtl] input,html[dir=rtl] select,html[dir=rtl] textarea,html[dir=rtl] th,html[dir=rtl] td,html[dir=rtl] figcaption,html[dir=rtl] label,html[dir=rtl] .eyebrow,html[dir=rtl] .mono{font-family:'Vazirmatn',system-ui,-apple-system,sans-serif}
html[dir=rtl] .nav-links{margin-left:0;margin-right:auto}
html[dir=rtl] .lang-switch{margin-left:0;margin-right:.5rem}
@media(max-width:860px){html[dir=rtl] .lang-switch{margin-right:0;margin-left:auto}}
html[dir=rtl] .nav-links a.active::after{left:auto;right:.85em}
html[dir=rtl] .hero-cats,html[dir=rtl] .hero-meta{direction:rtl}
html[dir=rtl] .filterbar .chip .arrow,html[dir=rtl] .nav-cta .arrow{display:inline-block;transform:scaleX(-1)}
html[dir=rtl] .lang-switch button{font-family:'IBM Plex Mono',monospace}

/* ===== RTL typography fixes (Arabic/Persian: no letter-spacing, looser lines) ===== */
html[dir=rtl] *{letter-spacing:normal !important;word-spacing:normal !important}
html[dir=rtl] body{line-height:1.85}
html[dir=rtl] h1,html[dir=rtl] h2,html[dir=rtl] h3,html[dir=rtl] h4{line-height:1.45}
html[dir=rtl] .hero h1{line-height:1.4}
html[dir=rtl] p{line-height:2}

/* ===== About Us page ===== */
.about-hero{padding-top:clamp(2.4rem,6vw,4.5rem);padding-bottom:clamp(2rem,5vw,3.5rem)}
.about-hero h1{font-size:clamp(2.4rem,6vw,4.4rem);margin-top:.5rem}
.about-hero .lead{font-size:clamp(1.05rem,2vw,1.35rem);color:var(--text-soft);max-width:60ch;margin-top:1.1rem;line-height:1.6}
.story-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:clamp(2rem,5vw,4.5rem);align-items:start}
.story-text h2{margin:.4rem 0 1.3rem}
.story-text p{margin:0 0 1.1rem;color:var(--text-soft);max-width:64ch;line-height:1.8}
.story-media{position:sticky;top:90px}
.ph{position:relative;background:var(--concrete-2);border:1.5px dashed rgba(20,20,20,.22);border-radius:var(--radius);aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;overflow:hidden}
.ph::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(20,20,20,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(20,20,20,.05) 1px,transparent 1px);background-size:24px 24px}
.ph span{position:relative;z-index:1;font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--steel)}
.ph-tall{aspect-ratio:3/4}
.stat-band{background:var(--ink)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.6rem}
.stat{display:flex;flex-direction:column;gap:.55rem}
.stat .num{font-family:var(--ff-display);font-weight:800;font-size:clamp(1.7rem,3.2vw,2.6rem);color:var(--orange);line-height:1}
.stat .num.txt{font-size:clamp(1rem,1.7vw,1.3rem);letter-spacing:.02em;line-height:1.2}
.stat .lbl{font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--steel)}
.supply-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-top:2.4rem}
.supply-card .ph{aspect-ratio:4/3}
.supply-card h3{font-size:1.05rem;margin:1rem 0 .35rem}
.supply-card p{color:var(--text-soft);font-size:.9rem;margin:0;line-height:1.6}
.about-cta h2{max-width:18ch;margin:0 auto}
@media(max-width:860px){
  .story-grid{grid-template-columns:1fr}
  .story-media{position:static;max-width:480px}
  .supply-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){ .stat-grid{grid-template-columns:1fr 1fr;gap:2rem 1.2rem} }
@media(max-width:520px){ .supply-grid{grid-template-columns:1fr} }

/* ===== Technical Guide page ===== */
.wrap.narrow{max-width:840px}
.app-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem;margin-top:2.2rem}
.app-card{background:#fff;border:1px solid rgba(20,20,20,.10);border-radius:var(--radius);padding:1.8rem}
.app-card .app-no{color:var(--orange);font-weight:700;font-size:.85rem;letter-spacing:.1em}
.app-card h3{margin:.6rem 0 .6rem;font-size:1.25rem}
.app-card p{margin:0;color:var(--text-soft);line-height:1.75}
.care-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.3rem;margin-top:2.2rem}
.care-step{padding:1.4rem;border:1px solid var(--ink-line,rgba(20,20,20,.1));border-radius:var(--radius);background:var(--concrete-2)}
.care-step .care-no{color:var(--orange);font-weight:700;font-size:.8rem;letter-spacing:.1em}
.care-step h3{margin:.5rem 0 .5rem;font-size:1.1rem}
.care-step p{margin:0;color:var(--text-soft);font-size:.92rem;line-height:1.7}
.signs-box{margin-top:1.8rem;padding:1.6rem 1.8rem;border-left:3px solid var(--orange);background:var(--concrete-2);border-radius:var(--radius)}
.signs-box h3{margin:0 0 .9rem;font-size:1.05rem}
.signs{margin:0;padding:0;list-style:none;display:grid;gap:.7rem}
.signs li{position:relative;padding-inline-start:1.4rem;color:var(--text-soft);line-height:1.6}
.signs li::before{content:"";position:absolute;inset-inline-start:0;top:.55em;width:7px;height:7px;background:var(--orange);border-radius:1px;transform:rotate(45deg)}
.faq{margin-top:2rem;display:grid;gap:.7rem}
.faq details{background:#fff;border:1px solid rgba(20,20,20,.1);border-radius:var(--radius);overflow:hidden}
.faq summary{cursor:pointer;padding:1.05rem 1.3rem;font-weight:700;font-size:1rem;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--orange);font-size:1.4rem;font-weight:400;line-height:1;flex:none}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0;padding:0 1.3rem 1.2rem;color:var(--text-soft);line-height:1.8}
html[dir=rtl] .signs-box{border-left:0;border-right:3px solid var(--orange)}
@media(max-width:860px){ .app-grid{grid-template-columns:1fr} .care-grid{grid-template-columns:1fr 1fr} }
@media(max-width:520px){ .care-grid{grid-template-columns:1fr} }

/* ===== About page — palette aligned with Home/Products (added) ===== */

/* image fill for placeholder slots (story side + supply cards) */
.ph.has-img{border:0;background:var(--white)}
.ph.has-img::before{display:none}
.ph.has-img img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;display:block}

/* dark cinematic hero with the engine photo (matches home/products dark heroes) */
.about-hero-cine{position:relative;background:var(--ink);color:#fff;overflow:hidden;
  min-height:clamp(340px,52vh,540px);display:flex;align-items:flex-end}
.about-hero-cine .ahc-media{position:absolute;inset:0;z-index:0}
.about-hero-cine .ahc-media img{width:100%;height:100%;object-fit:cover;object-position:center 32%}
.about-hero-cine .ahc-overlay{position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(20,20,20,.94) 0%,rgba(20,20,20,.72) 38%,rgba(20,20,20,.32) 72%,rgba(20,20,20,.18) 100%),
             linear-gradient(0deg,rgba(20,20,20,.9) 0%,rgba(20,20,20,.25) 40%,rgba(20,20,20,0) 70%)}
.about-hero-cine .blueprint{z-index:1;opacity:.32}
.about-hero-cine .ahc-inner{position:relative;z-index:2;width:100%;
  padding-block:clamp(2.6rem,7vw,4.6rem)}
.about-hero-cine .crumbs a{color:var(--steel)}
.about-hero-cine .eyebrow{display:inline-block;margin-top:1rem}
.about-hero-cine h1{font-size:clamp(2.4rem,6vw,4.4rem);font-weight:900;letter-spacing:-.02em;margin:.5rem 0 0;color:#fff}
.about-hero-cine .lead{color:#dcdcda;max-width:60ch;margin-top:1.1rem;font-size:clamp(1.05rem,2vw,1.3rem);line-height:1.6}
html[dir=rtl] .about-hero-cine .ahc-overlay{
  background:linear-gradient(270deg,rgba(20,20,20,.94) 0%,rgba(20,20,20,.72) 38%,rgba(20,20,20,.32) 72%,rgba(20,20,20,.18) 100%),
             linear-gradient(0deg,rgba(20,20,20,.9) 0%,rgba(20,20,20,.25) 40%,rgba(20,20,20,0) 70%)}

/* gallery — tight square mosaic like the home gallery band */
.about-gallery{padding-block:0;background:var(--ink)}
.about-gallery .wrap{max-width:none;padding-inline:0}
.about-gallery .gallery-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--ink-line)}
.about-gallery .g-item{margin:0;position:relative;aspect-ratio:1;overflow:hidden;background:#fff}
.about-gallery .g-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s ease}
.about-gallery .g-item:hover img{transform:scale(1.06)}
@media(max-width:1024px){ .about-gallery .gallery-grid{grid-template-columns:repeat(4,1fr)} }
@media(max-width:760px){ .about-gallery .gallery-grid{grid-template-columns:repeat(3,1fr)} }
@media(max-width:480px){ .about-gallery .gallery-grid{grid-template-columns:repeat(2,1fr)} }