:root {
  --bg: #ffffff;
  --paper: #f7f7f8;
  --ink: #141414;
  --muted: #666a70;
  --line: #d9d9dd;
  --soft-line: #ececef;
  --accent: #e4002b;
  --accent-dark: #9f001e;
  --blue: #002fa7;
  --max: 1440px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  letter-spacing: 0;
}

a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--soft-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--soft-line) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: .52;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 14px clamp(16px, 3vw, 42px);
  background: rgba(255,255,255,.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: fit-content;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--ink);
  background: var(--accent);
  color: #fff;
  font-weight: 800;
}

.brand strong { display: block; font-size: 15px; }
.brand small { display: block; color: var(--muted); font-size: 12px; margin-top: 2px; }

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.nav a,
.pill,
.tab-button {
  border: 1px solid var(--line);
  background: #fff;
  padding: 9px 12px;
  font-size: 13px;
  transition: transform .22s cubic-bezier(.16,1,.3,1), border-color .22s, background .22s;
}

.nav a:hover,
.pill:hover,
.tab-button:hover {
  border-color: var(--ink);
  transform: translateY(-1px);
}

.page {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(24px, 4vw, 64px) clamp(16px, 3vw, 42px) 80px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
  min-height: 520px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 36px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--accent);
}

h1 {
  margin: 20px 0 18px;
  max-width: 980px;
  font-size: clamp(42px, 8vw, 112px);
  line-height: .9;
  letter-spacing: 0;
  font-weight: 800;
}

h2 {
  margin: 0 0 16px;
  font-size: clamp(28px, 4vw, 58px);
  line-height: .98;
}

h3 { margin: 0; font-size: 20px; line-height: 1.12; }
p { color: var(--muted); line-height: 1.58; margin: 0; }

.hero-copy {
  max-width: 760px;
  font-size: 18px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 36px;
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.stat {
  min-height: 112px;
  padding: 14px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: #fff;
}

.stat strong { display: block; font-size: 36px; line-height: 1; font-variant-numeric: tabular-nums; }
.stat span { display: block; margin-top: 10px; color: var(--muted); font-size: 13px; }

.hero-board {
  position: relative;
  min-height: 480px;
  border-left: 1px solid var(--line);
  padding-left: 28px;
}

.board-title {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  margin-top: 20px;
  align-items: center;
}

.flow-col {
  display: grid;
  gap: 10px;
}

.flow-node {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 42px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.9);
  padding: 10px 12px;
  font-size: 13px;
}

.flow-node b { color: var(--accent); }
.flow-lines {
  width: 80px;
  height: 260px;
}

.section {
  margin-top: 52px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: end;
  margin-bottom: 22px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tab-button[aria-pressed="true"],
.pill.active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.series-list {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 12px;
}

.series-card {
  grid-column: span 4;
  min-height: 260px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  border: 1px solid var(--ink);
  background: #fff;
  padding: 18px;
  transition: transform .22s cubic-bezier(.16,1,.3,1), background .22s;
}

.series-card:nth-child(1),
.series-card:nth-child(5),
.series-card:nth-child(9) {
  grid-column: span 5;
}

.series-card:hover {
  transform: translateY(-4px);
  background: var(--paper);
}

.series-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 16px 0;
}

.mini-tag {
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 5px 7px;
  font-size: 12px;
  background: #fff;
}

.series-products {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  align-items: end;
  margin-top: 18px;
}

.series-products img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: #fff;
  border-top: 1px solid var(--soft-line);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.product-card {
  display: grid;
  grid-template-rows: 240px auto;
  border: 1px solid var(--line);
  background: #fff;
  min-height: 390px;
  transition: transform .22s cubic-bezier(.16,1,.3,1), border-color .22s;
}

.product-card:hover {
  border-color: var(--ink);
  transform: translateY(-3px);
}

.product-card figure,
.product-hero figure {
  margin: 0;
  display: grid;
  place-items: center;
  background: #fff;
  border-bottom: 1px solid var(--soft-line);
}

.product-card img {
  width: 92%;
  height: 92%;
  object-fit: contain;
}

.product-card-body {
  padding: 14px;
  display: grid;
  gap: 12px;
}

.product-card h3 {
  font-size: 17px;
}

.card-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.link-button {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border-bottom: 2px solid var(--accent);
  color: var(--ink);
  font-weight: 700;
  font-size: 13px;
  padding-bottom: 2px;
}

.layout-two {
  display: grid;
  grid-template-columns: minmax(280px, .9fr) minmax(0, 1.1fr);
  gap: clamp(22px, 4vw, 54px);
}

.product-hero {
  display: grid;
  gap: 18px;
}

.product-hero figure {
  position: sticky;
  top: 96px;
  min-height: min(70vh, 720px);
  border: 1px solid var(--ink);
}

.product-hero img {
  max-width: 92%;
  max-height: 86%;
  object-fit: contain;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumbs a {
  border-bottom: 1px solid var(--line);
}

.details {
  display: grid;
  gap: 18px;
}

.details h1 {
  font-size: clamp(36px, 5vw, 68px);
  line-height: .95;
}

.detail-panel {
  border-top: 1px solid var(--ink);
  padding-top: 16px;
}

.copy-block {
  color: var(--ink);
  font-size: 17px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 14px;
}

.spec-table th,
.spec-table td {
  text-align: left;
  border-top: 1px solid var(--line);
  padding: 10px 8px;
  vertical-align: top;
}

.spec-table th {
  width: 34%;
  color: var(--muted);
  font-weight: 500;
}

.image-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
}

.image-strip img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border: 1px solid var(--line);
  background: #fff;
}

.category-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--ink);
  background: #fff;
}

.category-rail a {
  min-height: 170px;
  padding: 18px;
  border-right: 1px solid var(--ink);
  display: grid;
  align-content: space-between;
}

.category-rail a:last-child { border-right: 0; }
.category-rail strong { font-size: 28px; }
.category-rail span { color: var(--muted); }

.empty {
  border: 1px solid var(--line);
  padding: 28px;
  background: #fff;
  color: var(--muted);
}

.not-found {
  min-height: 50vh;
  display: grid;
  place-items: center;
  text-align: center;
}

@media (max-width: 980px) {
  .topbar,
  .hero,
  .layout-two,
  .section-head {
    grid-template-columns: 1fr;
  }
  .nav { justify-content: flex-start; }
  .hero { min-height: auto; }
  .hero-board { border-left: 0; padding-left: 0; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .series-card,
  .series-card:nth-child(1),
  .series-card:nth-child(5),
  .series-card:nth-child(9) {
    grid-column: span 6;
  }
  .product-hero figure { position: static; min-height: 420px; }
}

@media (max-width: 640px) {
  .page { padding: 22px 14px 56px; }
  h1 { font-size: 42px; }
  .stats,
  .category-rail {
    grid-template-columns: 1fr;
  }
  .category-rail a { border-right: 0; border-bottom: 1px solid var(--ink); }
  .category-rail a:last-child { border-bottom: 0; }
  .series-list { grid-template-columns: 1fr; }
  .series-card,
  .series-card:nth-child(1),
  .series-card:nth-child(5),
  .series-card:nth-child(9) {
    grid-column: auto;
  }
  .flow { grid-template-columns: 1fr; }
  .flow-lines { display: none; }
}