:root{
  --bg:#f4f5f7;
  --surface:#ffffff;
  --ink:#1c2024;
  --ink-soft:#646b75;
  --line:#e8eaee;
  --accent:#2563eb;
  --accent-ink:#1d4ed8;
  --radius:14px;
  --shadow:0 1px 3px rgba(20,24,31,.06),0 8px 24px rgba(20,24,31,.05);
  --shadow-hover:0 6px 16px rgba(20,24,31,.10),0 20px 40px rgba(20,24,31,.08);
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:var(--font,"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif);
  color:var(--ink);line-height:1.55;background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:28px 20px}

/* ---------- Header (centered) ---------- */
.hdr{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
}
.hdr-inner{
  max-width:var(--maxw);margin:0 auto;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  padding:16px 20px;position:relative;
}
.logo{font-weight:800;font-size:22px;letter-spacing:-.02em;display:flex;align-items:center}
.logo img{max-height:42px;width:auto}
.nav{display:flex;gap:4px;flex-wrap:wrap;align-items:center;justify-content:center}
.nav a{
  padding:8px 14px;font-size:14px;font-weight:500;color:var(--ink-soft);
  border-radius:8px;transition:.15s;
}
.nav a:hover{color:var(--ink);background:var(--bg)}

/* minimal search: icon button at top-right that reveals a field */
.search-wrap{position:absolute;top:18px;right:20px;display:flex;align-items:center}
.search-btn{
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;border-radius:999px;cursor:pointer;
  color:var(--ink-soft);transition:.15s;
}
.search-btn:hover{border-color:var(--accent);color:var(--accent)}
.btn-accent-hover:hover,.source-box:hover{filter:brightness(.94)}
.search{
  display:flex;align-items:center;overflow:hidden;
  width:0;opacity:0;transition:width .22s ease,opacity .18s ease;
}
.search-wrap.open .search{width:230px;opacity:1;margin-right:8px}
.search input{
  width:100%;padding:9px 14px;border:1px solid var(--line);
  border-radius:999px;font-size:14px;background:#fff;outline:none;
}
.search input:focus{border-color:var(--accent)}
.menu-toggle{display:none;background:none;border:none;font-size:22px;cursor:pointer;
  position:absolute;top:18px;left:20px}

/* ---------- Page intro ---------- */
.page-head{margin-bottom:22px}
.page-head h1{font-size:28px;font-weight:800;letter-spacing:-.02em}
.page-head p{color:var(--ink-soft);margin-top:6px}
.eyebrow{
  font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--accent);margin-bottom:6px;
}

/* ---------- Product grid ---------- */
.grid{
  display:grid;
  grid-template-columns:repeat(var(--cols,4),minmax(0,1fr));
  gap:20px;margin-top:8px;
}
.card{
  position:relative;background:var(--surface);border:1px solid var(--card-line,var(--line));
  border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.card-img{aspect-ratio:3/4;background:var(--surface);overflow:hidden;display:flex;align-items:center;justify-content:center}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card-img img{transform:scale(1.04)}
.card-body{padding:14px 16px 18px}
.card-cat{font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft)}
.card-name{font-size:15px;font-weight:600;margin-top:3px;line-height:1.35;color:var(--ink)}
.badge{
  position:absolute;top:12px;left:12px;z-index:2;
  background:var(--accent);color:#fff;font-size:11px;font-weight:700;
  letter-spacing:.04em;padding:4px 10px;border-radius:999px;
}

/* ---------- Load more ---------- */
#loadmore{
  display:block;margin:32px auto 0;padding:12px 30px;
  border:1px solid var(--line);background:#fff;border-radius:999px;
  cursor:pointer;font-weight:600;font-size:14px;color:var(--ink);transition:.15s;box-shadow:var(--shadow);
}
#loadmore:hover{border-color:var(--accent);color:var(--accent)}
#loadmore:disabled{opacity:.6;cursor:default}

/* ---------- Product detail ---------- */
.product{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px;
  align-items:start;background:var(--surface);border:1px solid var(--line);
  border-radius:18px;padding:28px;box-shadow:var(--shadow);
}
.product-img{aspect-ratio:3/4;background:#fff;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.product-img img{width:100%;height:100%;object-fit:contain}
.product-info h1{font-size:26px;font-weight:800;letter-spacing:-.02em;margin-bottom:14px}
.desc{color:#3a4047;margin-bottom:22px;font-size:15px}
.source-box{
  display:flex;align-items:center;gap:10px;padding:16px 18px;
  background:linear-gradient(180deg,#f0f6ff,#e7f0ff);
  border:1px solid #cdddff;border-radius:12px;font-weight:600;color:var(--accent-ink);
  margin-bottom:20px;transition:.15s;
}
.source-box:hover{border-color:var(--accent);box-shadow:0 6px 18px rgba(37,99,235,.12)}
.source-box::before{content:"\2197";font-size:18px;font-weight:800}
.support{display:flex;gap:12px;flex-wrap:wrap}
.support a{
  display:inline-flex;align-items:center;gap:8px;padding:10px 16px;
  background:var(--bg);border:1px solid var(--line);border-radius:10px;
  font-weight:600;font-size:14px;transition:.15s;
}
.support a:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- Misc ---------- */
.empty{text-align:center;color:var(--ink-soft);padding:60px 20px}
.contact-list{list-style:none;margin-top:16px;display:flex;flex-direction:column;gap:10px}
.contact-list a{
  display:inline-flex;gap:8px;padding:12px 18px;background:var(--surface);
  border:1px solid var(--line);border-radius:10px;font-weight:600;width:fit-content;box-shadow:var(--shadow);
}
.ftr{text-align:center;padding:30px;border-top:1px solid var(--line);margin-top:50px;color:var(--ink-soft);font-size:14px}

/* ---------- Responsive ---------- */
@media(max-width:760px){
  .hdr-inner{padding:14px 16px}
  .menu-toggle{display:block}
  .nav{display:none;width:100%;flex-direction:column;gap:2px}
  body.nav-open .nav{display:flex}
  .nav a{padding:11px 12px;text-align:center}
  .search-wrap.open .search{width:160px}
  .product{grid-template-columns:1fr;gap:24px;padding:18px}
  .grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
}
@media(min-width:761px) and (max-width:1000px){
  .grid{grid-template-columns:repeat(min(var(--cols,4),3),minmax(0,1fr))}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important}
}

/* Breadcrumbs (internal linking + SEO) */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:16px;font-size:13px;color:var(--ink-soft)}
.crumbs a{color:var(--ink-soft);text-decoration:none}
.crumbs a:hover{color:var(--accent)}
.crumbs .current{color:var(--ink);font-weight:600}
.crumbs span[aria-hidden]{color:var(--line)}
.eyebrow a{color:inherit;text-decoration:none}
.eyebrow a:hover{text-decoration:underline}

/* Related products */
.related{margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.related h2{font-size:19px;font-weight:800;letter-spacing:-.01em;margin-bottom:16px}
.related h2 a{color:var(--accent);text-decoration:none}
.related h2 a:hover{text-decoration:underline}