:root {
  --ink: #111827;
  --muted: #5b6472;
  --line: #d7dde6;
  --paper: #ffffff;
  --soft: #f4f6f8;
  --steel: #1f3a4a;
  --steel-2: #0f232d;
  --accent: #d97706;
  --accent-dark: #b45309;
  --ok: #0f766e;
  --radius: 6px;
  --shadow: 0 18px 42px rgba(17, 24, 39, .12);
  --wrap: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--paper);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 20px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--steel);
  border-radius: var(--radius);
  font-weight: 900;
}
.brand span:last-child { display: block; font-size: 14px; line-height: 1.2; max-width: 190px; }
.nav { display: flex; justify-content: center; gap: 22px; font-size: 14px; font-weight: 650; color: #293341; }
.nav a:hover, .nav a:focus { color: var(--accent-dark); }
.header-actions { display: flex; gap: 10px; align-items: center; }

.btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 17px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 750;
  cursor: pointer;
  transition: .18s ease;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover, .btn-primary:focus { background: var(--accent-dark); }
.btn-secondary { background: #fff; color: var(--steel); border-color: var(--line); }
.btn-secondary:hover, .btn-secondary:focus { border-color: var(--steel); }
.btn-dark { background: var(--steel); color: #fff; border-color: rgba(255,255,255,.18); }
.btn-link { color: var(--steel); font-weight: 750; text-decoration: underline; text-underline-offset: 4px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.section { padding: 76px 0; }
.section.alt { background: var(--soft); }
.eyebrow { color: var(--accent-dark); text-transform: uppercase; font-size: 12px; font-weight: 850; letter-spacing: .08em; margin: 0 0 10px; }
h1, h2, h3 { line-height: 1.12; letter-spacing: 0; margin: 0; }
h1 { font-size: clamp(38px, 6vw, 68px); max-width: 880px; }
h2 { font-size: clamp(30px, 4vw, 46px); max-width: 760px; }
h3 { font-size: 22px; }
p { margin: 0; color: var(--muted); }
.lead { font-size: 19px; max-width: 760px; color: #d9e2e8; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 32px; }
.section-head p { max-width: 520px; }

.hero {
  min-height: 700px;
  position: relative;
  display: grid;
  align-items: center;
  color: #fff;
  background: linear-gradient(90deg, rgba(10, 25, 34, .92), rgba(10, 25, 34, .68), rgba(10, 25, 34, .2)), var(--hero-image);
  background-size: cover;
  background-position: center;
}
.hero .wrap { width: 100%; }
.hero-copy { padding: 80px 0 120px; }
.hero h1 { margin-bottom: 20px; }
.hero .actions { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }
.trust-row {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 35, 45, .9);
  border-top: 1px solid rgba(255,255,255,.18);
}
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; }
.trust-item { padding: 22px 20px; border-right: 1px solid rgba(255,255,255,.16); }
.trust-item strong { display: block; color: #fff; font-size: 15px; }
.trust-item span { color: #b8c6ce; font-size: 13px; }

.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.product-card, .info-card, .post-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}
.product-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: #e8edf1; }
.product-card .body, .info-card, .post-card { padding: 22px; }
.product-card p, .info-card p, .post-card p { margin-top: 10px; }
.product-card .btn-link { display: inline-flex; margin-top: 18px; }
.spec-list { display: grid; gap: 12px; margin: 22px 0 0; }
.spec-row { display: grid; grid-template-columns: 170px 1fr; gap: 12px; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.spec-row strong { color: var(--steel); }

.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 42px; align-items: center; }
.media-stack { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.media-stack img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; border-radius: var(--radius); }
.media-stack img:first-child { grid-row: span 2; aspect-ratio: auto; height: 100%; }
.check-list { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 28px; color: #2f3947; }
.check-list li:before { content: ""; width: 9px; height: 9px; position: absolute; left: 2px; top: .62em; background: var(--ok); border-radius: 50%; }

.cta-band { background: var(--steel-2); color: #fff; padding: 54px 0; }
.cta-inner { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; }
.cta-inner p { color: #c7d1d7; max-width: 720px; margin-top: 10px; }

.page-hero { padding: 74px 0 52px; background: var(--steel-2); color: #fff; }
.page-hero p { color: #c7d1d7; max-width: 760px; margin-top: 16px; font-size: 18px; }
.breadcrumb { color: #aab8c0; font-size: 13px; margin-bottom: 16px; }

.product-hero-grid { display: grid; grid-template-columns: 1fr .9fr; gap: 40px; align-items: center; }
.product-hero-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 18px; }
.gallery img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--line); }

.form {
  display: grid;
  gap: 14px;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
label { display: grid; gap: 7px; color: #273444; font-weight: 700; font-size: 14px; }
input, select, textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid #cbd5df;
  border-radius: var(--radius);
  padding: 11px 12px;
  background: #fff;
  color: var(--ink);
}
textarea { min-height: 130px; resize: vertical; }
input:focus, select:focus, textarea:focus, .btn:focus, a:focus { outline: 3px solid rgba(217,119,6,.28); outline-offset: 2px; }
.form-note { font-size: 13px; color: var(--muted); }

.floating-contact {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 80;
  display: grid;
  gap: 10px;
}
.float-btn {
  min-width: 54px;
  min-height: 54px;
  padding: 0 15px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #fff;
  background: #128c7e;
  font-weight: 850;
  box-shadow: var(--shadow);
}
.float-btn.email { background: var(--steel); }

.site-footer { background: #0b171f; color: #d9e2e8; padding: 52px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 28px; }
.footer-grid h3 { font-size: 16px; margin-bottom: 12px; color: #fff; }
.footer-grid a, .footer-grid p { display: block; color: #b8c6ce; font-size: 14px; margin: 8px 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 34px; padding-top: 20px; color: #8fa1ac; font-size: 13px; }

@media (max-width: 920px) {
  .header-inner { grid-template-columns: 1fr auto; }
  .nav { grid-column: 1 / -1; justify-content: flex-start; flex-wrap: wrap; overflow: visible; padding-bottom: 4px; }
  .header-actions .btn-secondary { display: none; }
  .trust-grid, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .split, .product-hero-grid, .cta-inner, .footer-grid { grid-template-columns: 1fr; }
  .hero { min-height: 760px; }
  .section-head { display: block; }
  .section-head p { margin-top: 12px; }
}

@media (max-width: 600px) {
  .header-inner { padding: 12px 14px; gap: 12px; }
  .brand span:last-child { max-width: 150px; font-size: 13px; }
  .nav { gap: 16px; font-size: 13px; }
  .hero { min-height: 0; display: block; background-position: center top; }
  .hero-copy { padding: 72px 0 44px; }
  .hero h1 { font-size: 40px; }
  .hero .lead { font-size: 17px; }
  .hero .actions { display: grid; grid-template-columns: 1fr; }
  .hero .actions .btn { width: 100%; }
  .trust-row { position: static; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-item { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.16); }
  .trust-grid, .grid-4, .form-grid, .gallery { grid-template-columns: 1fr; }
  .section { padding: 54px 0; }
  .spec-row { grid-template-columns: 1fr; }
  .floating-contact { left: 12px; right: 12px; grid-template-columns: 1fr 1fr; }
  .float-btn { min-height: 50px; padding: 0 10px; font-size: 13px; }
}