:root {
  --ink: #181818;
  --muted: #62666d;
  --line: #ded8ce;
  --paper: #f7f4ee;
  --white: #ffffff;
  --blue: #0a66a4;
  --gold: #b78b42;
  --shadow: 0 18px 45px rgba(24, 24, 24, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, Arial, Helvetica, sans-serif;
}

a {
  color: inherit;
}

.catalog-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 82px;
  padding: 14px clamp(18px, 5vw, 74px);
  border-bottom: 1px solid var(--line);
  background: rgba(247, 244, 238, 0.96);
  backdrop-filter: blur(14px);
}

.catalog-brand img {
  display: block;
  width: min(310px, 52vw);
  height: 52px;
  object-fit: contain;
  object-position: left center;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 17px;
  border-radius: 4px;
  background: var(--ink);
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 800;
  text-decoration: none;
}

.catalog-hero {
  padding: clamp(58px, 8vw, 100px) clamp(18px, 7vw, 110px) 36px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.catalog-hero h1 {
  max-width: 1100px;
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 6rem);
  line-height: 1;
}

.category-subtitle {
  margin: 16px 0 0;
  color: var(--blue);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 800;
}

.category-description {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  overflow-x: visible;
  padding: 0 clamp(18px, 7vw, 110px) 28px;
  scrollbar-width: thin;
}

.category-nav a {
  flex: 0 0 auto;
  padding: 11px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  font-size: 0.88rem;
  font-weight: 800;
  text-decoration: none;
}

.category-nav a[aria-current="page"],
.category-nav a:hover {
  border-color: var(--blue);
  background: var(--blue);
  color: var(--white);
}

.catalog-pages {
  display: grid;
  gap: 28px;
  padding: 12px clamp(18px, 7vw, 110px) clamp(70px, 8vw, 110px);
}

.catalog-page {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.catalog-page img {
  display: block;
  width: 100%;
  height: auto;
}

.catalog-page figcaption {
  padding: 14px 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
}

.catalog-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 25px clamp(18px, 5vw, 74px);
  background: var(--ink);
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
}

.catalog-footer p {
  margin: 0;
}

.catalog-footer a {
  color: var(--white);
  font-weight: 800;
}

@media (max-width: 620px) {
  .catalog-header {
    min-height: 68px;
    gap: 12px;
  }

  .catalog-brand img {
    height: 42px;
  }

  .back-link {
    padding: 0 12px;
    font-size: 0.8rem;
  }

  .category-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
  }

  .catalog-footer {
    flex-direction: column;
  }
}