:root {
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
}

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

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2.25rem, 4.6vw, 4.85rem);
  max-width: 860px;
}

h2 {
  font-size: clamp(1.45rem, 2.2vw, 2.3rem);
}

h3 {
  font-size: 1.05rem;
}

main {
  min-height: 100vh;
}

.preview-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  min-height: 72px;
  padding: 0 max(22px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid var(--line);
  background: var(--nav);
  backdrop-filter: blur(18px);
}

.preview-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
}

.preview-brand span {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 5px;
  background: var(--accent);
  color: var(--accent-ink);
}

.preview-topbar nav {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.preview-topbar nav a,
.preview-cta {
  padding: 11px 13px;
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.preview-topbar nav a:hover {
  color: var(--text);
  background: var(--soft);
}

.preview-cta {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.back-link {
  display: inline-flex;
  width: fit-content;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.preview-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 34px 22px 56px;
  border-top: 1px solid var(--line);
}

.preview-switcher a {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
}

.preview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.94rem;
}

.preview-table th,
.preview-table td {
  padding: 18px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.preview-table th {
  color: var(--text);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.variant-bardehle {
  --bg: #ffffff;
  --nav: rgba(255, 255, 255, 0.94);
  --text: #151515;
  --muted: #5c6269;
  --line: #d9dde2;
  --soft: #f3f4f6;
  --accent: #9d1f2f;
  --accent-ink: #ffffff;
  --radius: 2px;
}

.be-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 430px);
  gap: 52px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 92px 22px 74px;
}

.be-hero__copy {
  display: grid;
  gap: 24px;
  align-content: start;
}

.be-menu {
  display: grid;
  align-self: end;
  border-top: 4px solid var(--accent);
}

.be-menu a {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.be-menu span,
.section-number,
.be-columns span {
  color: var(--accent);
  font-weight: 800;
}

.be-band {
  display: grid;
  grid-template-columns: 160px minmax(0, 770px);
  gap: 42px;
  padding: 70px max(22px, calc((100vw - 1180px) / 2));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #f6f7f8;
}

.be-band div {
  display: grid;
  gap: 20px;
}

.be-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 1180px;
  margin: 0 auto;
  padding: 68px 22px;
  border-bottom: 1px solid var(--line);
}

.be-columns article {
  display: grid;
  gap: 22px;
  min-height: 210px;
  padding: 0 30px 0 0;
  border-right: 1px solid var(--line);
}

.be-columns article + article {
  padding-left: 30px;
}

.be-table-section {
  display: grid;
  gap: 34px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 74px 22px;
}

.variant-lab {
  --bg: #0b1118;
  --nav: rgba(11, 17, 24, 0.92);
  --text: #eff6f2;
  --muted: #b9c7c4;
  --line: rgba(239, 246, 242, 0.16);
  --soft: rgba(117, 216, 255, 0.08);
  --accent: #c8f05f;
  --accent-ink: #10151b;
  --radius: 6px;
  background:
    linear-gradient(rgba(11, 17, 24, 0.9), rgba(11, 17, 24, 0.9)),
    repeating-linear-gradient(90deg, rgba(117, 216, 255, 0.07) 0 1px, transparent 1px 58px),
    repeating-linear-gradient(0deg, rgba(200, 240, 95, 0.045) 0 1px, transparent 1px 58px),
    var(--bg);
}

.lab-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.9fr);
  gap: 58px;
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: 72px max(22px, calc((100vw - 1180px) / 2));
}

.lab-hero > div:first-child {
  display: grid;
  gap: 24px;
}

.lab-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.lab-actions a {
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 800;
}

.lab-actions a:first-child {
  background: var(--accent);
  color: var(--accent-ink);
}

.claim-board {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  padding: 24px;
  border: 1px solid var(--line);
  background: rgba(17, 24, 32, 0.72);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.26);
}

.claim-board::before {
  content: "";
  position: absolute;
  inset: 50% 14px auto;
  height: 1px;
  background: var(--line);
}

.claim-node {
  position: relative;
  display: grid;
  gap: 14px;
  min-height: 150px;
  padding: 20px;
  border: 1px solid rgba(117, 216, 255, 0.35);
  background: #101822;
}

.claim-node span {
  color: #75d8ff;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.claim-node strong {
  align-self: end;
  font-size: 1.15rem;
}

.claim-node--main {
  grid-column: span 2;
}

.claim-node--accent {
  border-color: var(--accent);
}

.lab-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.85fr 0.85fr;
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px 74px;
}

.lab-panel,
.lab-examples article {
  padding: 24px;
  border: 1px solid var(--line);
  background: rgba(17, 24, 32, 0.82);
}

.lab-panel {
  display: grid;
  gap: 20px;
}

.lab-panel ul {
  display: grid;
  gap: 14px;
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.lab-examples {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px 84px;
}

.example-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.lab-examples article {
  display: grid;
  gap: 14px;
}

.lab-examples span {
  color: var(--accent);
  font-weight: 900;
}

.variant-dossier {
  --bg: #efefed;
  --nav: rgba(239, 239, 237, 0.94);
  --text: #161616;
  --muted: #515151;
  --line: #c8c5bd;
  --soft: #e1dfd8;
  --accent: #1e1e1e;
  --accent-ink: #ffffff;
  --radius: 1px;
}

.dossier-hero {
  display: grid;
  gap: 22px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 82px 22px 54px;
}

.dossier-stamp {
  width: fit-content;
  padding: 8px 12px;
  border: 1px solid var(--text);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dossier-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 40px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px 80px;
}

.dossier-index {
  position: sticky;
  top: 92px;
  display: grid;
  align-self: start;
  gap: 0;
  border-top: 2px solid var(--text);
}

.dossier-index span,
.dossier-index a {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.dossier-index span {
  font-weight: 900;
  text-transform: uppercase;
}

.dossier-paper {
  display: grid;
  gap: 44px;
  padding: 44px;
  border: 1px solid var(--line);
  background: #fbfbfa;
  box-shadow: 0 26px 65px rgba(0, 0, 0, 0.08);
}

.dossier-paper section {
  display: grid;
  gap: 18px;
}

.dossier-paper ol {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 22px;
  color: var(--muted);
}

.variant-product {
  --bg: #0b1118;
  --nav: rgba(11, 17, 24, 0.92);
  --text: #eff6f2;
  --muted: #b9c7c4;
  --line: rgba(239, 246, 242, 0.16);
  --soft: rgba(117, 216, 255, 0.09);
  --accent: #c8f05f;
  --accent-ink: #10151b;
  --radius: 6px;
  background:
    linear-gradient(rgba(11, 17, 24, 0.91), rgba(11, 17, 24, 0.91)),
    repeating-linear-gradient(90deg, rgba(117, 216, 255, 0.07) 0 1px, transparent 1px 58px),
    repeating-linear-gradient(0deg, rgba(200, 240, 95, 0.045) 0 1px, transparent 1px 58px),
    var(--bg);
}

.product-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 42px;
  align-items: end;
  max-width: 1180px;
  margin: 0 auto;
  padding: 82px 22px 50px;
}

.product-hero > div {
  display: grid;
  gap: 22px;
}

.product-summary {
  display: grid;
  gap: 14px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(17, 24, 32, 0.95), rgba(13, 18, 24, 0.96)),
    repeating-linear-gradient(90deg, rgba(117, 216, 255, 0.08) 0 1px, transparent 1px 48px);
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.22);
}

.product-summary span {
  color: #75d8ff;
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-summary strong {
  font-size: 1.45rem;
  line-height: 1.18;
}

.workflow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px 42px;
}

.workflow article {
  display: grid;
  gap: 14px;
  min-height: 250px;
  padding: 24px;
  border: 1px solid var(--line);
  background: rgba(17, 24, 32, 0.86);
}

.workflow article + article {
  border-left: 0;
}

.workflow span {
  color: var(--accent);
  font-weight: 900;
}

.product-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 24px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px 56px;
}

.product-content article,
.product-content aside {
  display: grid;
  gap: 20px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(17, 24, 32, 0.88);
}

.product-content aside a {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.signal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.signal-tags span {
  padding: 10px 12px;
  border-radius: var(--radius);
  background: var(--soft);
  color: #eff6f2;
  font-weight: 700;
}

.product-examples {
  display: grid;
  gap: 22px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px 78px;
}

.product-examples > div {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.product-examples article {
  display: grid;
  gap: 12px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(17, 24, 32, 0.88);
}

.product-examples span {
  color: var(--accent);
  font-weight: 900;
}

@media (max-width: 920px) {
  .preview-topbar {
    grid-template-columns: 1fr auto;
  }

  .preview-topbar nav {
    display: none;
  }

  .be-hero,
  .lab-hero,
  .product-hero,
  .dossier-layout,
  .product-content {
    grid-template-columns: 1fr;
  }

  .be-columns,
  .lab-grid,
  .example-rail,
  .workflow,
  .product-examples > div {
    grid-template-columns: 1fr 1fr;
  }

  .dossier-index {
    position: static;
  }
}

@media (max-width: 620px) {
  h1 {
    font-size: 2.08rem;
  }

  .preview-topbar {
    min-height: 66px;
  }

  .preview-cta {
    display: none;
  }

  .be-hero,
  .lab-hero,
  .product-hero,
  .dossier-hero {
    padding-top: 48px;
  }

  .be-band {
    grid-template-columns: 1fr;
  }

  .be-columns,
  .lab-grid,
  .example-rail,
  .workflow,
  .product-examples > div,
  .claim-board {
    grid-template-columns: 1fr;
  }

  .claim-node--main {
    grid-column: auto;
  }

  .dossier-paper {
    padding: 24px 18px;
  }

  .preview-table {
    display: block;
    overflow-x: auto;
    white-space: normal;
  }
}