:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --ink: #0f172a;
  --muted: #475569;
  --brand: #EAB308;
  --accent: #52525B;
  --line: #e2e8f0;
  --container: 1160px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: Inter, system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--ink); line-height: 1.6; }
.section { padding: 56px 0; }
.container { width: min(var(--container), calc(100% - 2rem)); margin: 0 auto; }
.topbar { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(8px); }
.topbar-inner { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { font-weight: 700; text-decoration: none; color: var(--ink); }
.nav-toggle { display: none; }
.nav-list { display: flex; list-style: none; margin: 0; padding: 0; gap: 1rem; }
.nav-list a { text-decoration: none; color: var(--muted); font-weight: 600; }
.nav-list a.is-active, .nav-list a:hover { color: var(--brand); }
.btn { display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; padding: .65rem 1.15rem; text-decoration: none; font-weight: 700; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-outline { border: 1px solid var(--ink); color: var(--ink); background: transparent; }
.hero-industrial { background: linear-gradient(180deg, rgba(15,23,42,0.95), rgba(30,41,59,0.9)); color: #fff; }
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 1.5rem; align-items: center; }
.hero-grid h1 { margin: 0 0 14px 0; font-size: clamp(2rem, 4vw, 3rem); line-height: 1.1; letter-spacing: .01em; }
.hero-grid p { color: rgba(255,255,255,.84); margin: 0 0 16px 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 18px; }
.industrial-panel { border: 1px solid rgba(255,255,255,.22); background: rgba(255,255,255,.07); border-radius: 14px; padding: 18px; }
.metric-list { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: .75rem; margin-top: 1rem; }
.metric { border: 1px solid var(--line); background: var(--surface); border-radius: 12px; padding: .85rem; }
.metric strong { display: block; font-size: 1.2rem; color: var(--brand); }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
.product-card { border: 1px solid var(--line); border-radius: 14px; background: var(--surface); overflow: hidden; }
.product-card img { width: 100%; height: 220px; object-fit: cover; display: block; filter: saturate(.9) contrast(1.03); }
.product-card .pad { padding: 14px; }
.spec-list { margin: .6rem 0 0 0; padding-left: 1rem; color: var(--muted); }
.feature-strip { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1rem; }
.feature-item { border: 1px solid var(--line); border-left: 4px solid var(--brand); background: var(--surface); border-radius: 10px; padding: 14px; }
.case-track { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1rem; overflow-x: auto; padding-bottom: .35rem; }
.case-card { min-width: 220px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); padding: 12px; }
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 1rem; }
.tag-row { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: .75rem; }
.tag { border: 1px solid var(--line); padding: .35rem .6rem; border-radius: 999px; background: #fff; font-size: .85rem; }
.cert-row { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: .75rem; }
.cert { border: 1px dashed var(--line); border-radius: 10px; padding: 12px; text-align: center; font-weight: 700; color: var(--ink); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 1rem; }
.quote-form { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); padding: 14px; }
.quote-form input, .quote-form textarea, .quote-form select { width: 100%; margin-bottom: .65rem; padding: .6rem .7rem; border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.wa-float { display: inline-flex; align-items: center; gap: .45rem; border-radius: 999px; padding: .5rem .9rem; background: #16a34a; color: #fff; text-decoration: none; font-weight: 700; }
.footer { border-top: 1px solid var(--line); background: #fff; padding: 2rem 0; margin-top: 4rem; color: var(--muted); }
.footer-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: .45rem .7rem; }
  .nav-list { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--line); padding: .8rem 1rem; flex-direction: column; }
  .nav-list.is-open { display: flex; }
  .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .metric-list { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .card-grid { grid-template-columns: 1fr; }
  .feature-strip { grid-template-columns: 1fr; }
  .case-track { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .cert-row { grid-template-columns: 1fr; }
}