:root {
  --bg: #e8eaee;
  --surface: #ffffff;
  --surface-soft: #f4f5f8;
  --text: #182230;
  --muted: #4f5d73;
  --navy: #102435;
  --navy-strong: #0b1b2a;
  --primary: #c10010;
  --primary-strong: #99000c;
  --border: #d8dde4;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 14px 34px rgba(17, 24, 39, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Inter, Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1180px, 94%);
  margin: 0 auto;
}

.top-strip {
  height: 30px;
  background: linear-gradient(90deg, var(--primary), #d90d1d);
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav {
  min-height: 74px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: 0.03em;
  color: var(--navy);
}

nav {
  display: flex;
  gap: 0.4rem;
}

nav a {
  padding: 0.52rem 0.82rem;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-weight: 600;
  transition: 0.25s ease;
}

nav a:hover,
nav a:focus-visible,
nav a.active {
  background: var(--surface-soft);
  color: var(--navy);
}

.page-banner {
  background: var(--navy);
  color: #fff;
  padding: 0.85rem 0;
  text-align: center;
}

.page-banner h1 {
  margin: 0;
  letter-spacing: 0.04em;
  font-size: clamp(1.1rem, 3vw, 1.55rem);
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  padding: 1.4rem 0 1rem;
}

.hero-content,
.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-content {
  padding: 1.25rem;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  font-weight: 800;
  font-size: 0.75rem;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0.35rem 0 0.75rem;
}

h1 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h1 span {
  color: var(--primary);
}

.muted {
  color: var(--muted);
}

.hero-actions {
  margin-top: 1rem;
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.68rem 1rem;
  font-size: 0.92rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
}

.btn.primary {
  background: linear-gradient(120deg, var(--primary), #e11426);
  color: #fff;
}

.btn.primary:hover,
.btn.primary:focus-visible {
  background: linear-gradient(120deg, var(--primary-strong), var(--primary));
}

.btn.ghost {
  background: #fff;
  border-color: var(--border);
  color: var(--text);
}

.hero-card {
  padding: 1rem;
  display: grid;
  gap: 0.65rem;
}

.kpi {
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  display: flex;
  justify-content: space-between;
  padding: 0.65rem 0.75rem;
}

.section {
  padding: 1rem 0 1.8rem;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.section-head.compact {
  margin-bottom: 0.3rem;
}

.text-link {
  color: var(--primary);
  font-weight: 700;
}

.catalog-layout {
  display: grid;
  gap: 1rem;
}

.catalog-sidebar {
  background: linear-gradient(180deg, var(--primary), #ab000d);
  color: #fff;
  padding: 1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  gap: 0.6rem;
  align-content: start;
}

.catalog-sidebar h2 {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
}

.sidebar-btn {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 0.56rem 0.8rem;
  font-weight: 600;
  transition: 0.2s ease;
}

.sidebar-btn:hover,
.sidebar-btn:focus-visible,
.sidebar-btn.active {
  background: #fff;
  color: var(--primary);
}

.catalog-main {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem;
}

.filters {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.78rem;
  margin: 0.6rem 0 0.9rem;
  display: grid;
  gap: 0.68rem;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

label {
  display: grid;
  gap: 0.34rem;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 600;
}

input,
select {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  padding: 0.58rem 0.62rem;
}

input:focus-visible,
select:focus-visible,
.btn:focus-visible,
.page-btn:focus-visible,
a:focus-visible {
  outline: 2px solid #5b9dff;
  outline-offset: 2px;
}

.grid {
  display: grid;
  gap: 0.8rem;
}

.products-grid {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.products-grid-catalog {
  grid-template-columns: repeat(auto-fill, minmax(145px, 1fr));
  gap: 0.58rem;
}

.product-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: #c7ced9;
}

.product-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #fff;
}

.product-content {
  padding: 0.65rem;
  display: grid;
  gap: 0.35rem;
}

.product-content h3 {
  font-size: 0.8rem;
  margin: 0;
}

.product-content strong {
  color: var(--navy);
  font-size: 0.78rem;
}

.products-grid-catalog .product-content {
  padding: 0.5rem;
}

.products-grid-catalog .product-content h3 {
  font-size: 0.69rem;
}

.products-grid-catalog .product-content strong {
  font-size: 0.66rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.28rem;
}

.chip {
  background: #eff3f8;
  border-radius: 999px;
  padding: 0.14rem 0.38rem;
  font-size: 0.62rem;
  color: #4a5669;
}

.products-grid-catalog .chip {
  font-size: 0.58rem;
}

.products-grid-catalog .btn.ghost {
  border-radius: 10px;
  font-size: 0.68rem;
  padding: 0.46rem 0.52rem;
}

.pagination {
  margin-top: 0.9rem;
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.page-btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  border-radius: 999px;
  padding: 0.42rem 0.7rem;
  cursor: pointer;
  transition: 0.2s ease;
}

.page-btn:hover,
.page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.detail-layout,
.empty {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.detail-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  padding: 1rem;
}

.detail-image {
  width: 100%;
  max-height: 390px;
  object-fit: contain;
  border-radius: 12px;
  background: #fafbfd;
  border: 1px solid var(--border);
}

.tech-table {
  width: 100%;
  border-collapse: collapse;
}

.tech-table th,
.tech-table td {
  border-bottom: 1px solid var(--border);
  padding: 0.45rem 0.3rem;
  text-align: left;
}

.empty {
  padding: 1rem;
  text-align: center;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: #fff;
  margin-top: 1rem;
}

.footer-wrap {
  min-height: 58px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.86rem;
}

@media (min-width: 760px) {
  .hero {
    grid-template-columns: 1.3fr 0.8fr;
  }

  .catalog-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: start;
  }

  .detail-layout {
    grid-template-columns: minmax(260px, 360px) 1fr;
  }
}