:root {
  color-scheme: light;
  --color-ink: #070706;
  --color-carbon: #15130f;
  --color-charcoal: #2a261d;
  --color-gold: #c8a24a;
  --color-gold-deep: #9d7b2f;
  --color-gold-soft: #ead9a5;
  --color-gold-wash: #fbf5e5;
  --color-sage: #7f9475;
  --color-sage-soft: #dfe8d9;
  --color-algae: #526f5a;
  --color-agar: #f4efe3;
  --color-bone: #eee7d8;
  --color-clay: #b7a889;
  --color-copper: #a46f45;
  --color-oxygen: #6f8f97;
  --color-page: #f8f6ef;
  --color-surface: #fffdf7;
  --color-surface-alt: #f1eee4;
  --color-border: #ddd4c0;
  --color-border-strong: #bcae8b;
  --color-muted: #6f6a5c;
  --color-faint: #928b7a;
  --color-white: #ffffff;
  --color-nav-glass: #fffdf7e6;
  --color-ink-hairline: #07070614;
  --color-gold-overlay: #c8a24a24;
  --color-sage-overlay: #7f947526;
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial,
    Helvetica, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --shadow-nav: 0 16px 36px rgb(7 7 6 / 10%);
  --shadow-panel: 0 28px 70px rgb(7 7 6 / 13%);
  --max-page: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background:
    linear-gradient(135deg, rgb(200 162 74 / 8%) 0 1px, transparent 1px 34px),
    var(--color-page);
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 16px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--max-page), calc(100% - 32px));
  margin: 16px auto 0;
  padding: 12px 18px;
  border: 1px solid var(--color-ink-hairline);
  border-radius: 999px;
  background: var(--color-nav-glass);
  box-shadow: var(--shadow-nav);
  backdrop-filter: blur(18px);
}

.brand,
.site-header nav,
.hero-actions,
.lab-header,
.lab-grid,
.site-footer,
.track,
.metric-list div {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-gold);
  border-radius: 8px;
  background:
    linear-gradient(135deg, transparent 38%, var(--color-gold) 39% 46%, transparent 47%),
    linear-gradient(45deg, transparent 45%, var(--color-sage) 46% 53%, transparent 54%),
    var(--color-carbon);
}

.site-header nav {
  gap: clamp(10px, 2vw, 24px);
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 600;
}

.site-header nav a {
  border-bottom: 2px solid transparent;
}

.site-header nav a:hover {
  color: var(--color-ink);
  border-color: var(--color-gold);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.78fr);
  align-items: center;
  gap: clamp(32px, 6vw, 74px);
  width: min(var(--max-page), calc(100% - 32px));
  min-height: calc(100svh - 94px);
  margin: 0 auto;
  padding: clamp(52px, 8vw, 92px) 0 48px;
}

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

.eyebrow {
  margin: 0 0 16px;
  color: var(--color-gold-deep);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
dl,
dd {
  margin-top: 0;
}

h1,
h2,
h3 {
  letter-spacing: 0;
}

h1 {
  max-width: 900px;
  margin-bottom: 24px;
  font-size: clamp(48px, 8vw, 88px);
  line-height: 0.95;
}

h2 {
  max-width: 780px;
  margin-bottom: 0;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.04;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.15;
}

p {
  color: var(--color-muted);
  line-height: 1.62;
}

.lede {
  max-width: 690px;
  margin-bottom: 32px;
  color: var(--color-bone);
  font-size: clamp(18px, 2vw, 21px);
}

.hero-copy .eyebrow,
.hero-copy h1 {
  color: var(--color-white);
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  min-height: 720px;
  content: "";
  background:
    linear-gradient(160deg, var(--color-carbon) 0%, var(--color-carbon) 64%, transparent 64%),
    linear-gradient(90deg, rgb(21 19 15 / 96%), rgb(42 38 29 / 86%));
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--color-border-strong);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
}

.button.primary {
  color: var(--color-ink);
  border-color: var(--color-gold);
  background: var(--color-gold);
}

.button.primary:hover {
  color: var(--color-white);
  background: var(--color-gold-deep);
}

.button.secondary {
  color: var(--color-gold-soft);
  border-color: rgb(234 217 165 / 58%);
  background: transparent;
}

.button.secondary:hover {
  color: var(--color-ink);
  background: var(--color-gold-wash);
}

.hero-lab {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--color-charcoal);
  border-radius: 20px;
  background: rgb(255 253 247 / 94%);
  box-shadow: var(--shadow-panel);
}

.lab-header {
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.lab-grid {
  gap: 8px;
  margin-bottom: 18px;
}

.node {
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.node-gold {
  background: var(--color-gold-wash);
}

.node-sage {
  background: var(--color-sage-soft);
}

.node-oxygen {
  background: rgb(111 143 151 / 20%);
}

.node-copper {
  background: rgb(164 111 69 / 16%);
}

.connector {
  width: min(32px, 5vw);
  height: 1px;
  background: var(--color-border-strong);
}

.lab-surface {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-agar);
}

.lab-surface img {
  display: block;
  width: 100%;
  min-height: 330px;
  object-fit: cover;
}

.section-band {
  padding: clamp(58px, 8vw, 104px) 16px;
  border-top: 1px solid var(--color-border);
  background: var(--color-page);
}

.section-heading,
.section-inner,
.track-map {
  width: min(var(--max-page), 100%);
  margin: 0 auto;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.58fr);
  gap: clamp(24px, 5vw, 70px);
  align-items: end;
}

.section-heading p {
  margin-bottom: 0;
  font-size: 17px;
}

.section-heading.compact {
  display: block;
  margin-bottom: 30px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  width: min(var(--max-page), 100%);
  margin: 38px auto 0;
}

.product-card {
  position: relative;
  overflow: hidden;
  min-height: 500px;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-surface);
}

.product-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 6px;
  content: "";
  background: var(--color-gold);
}

.scaffold-card::after,
.nano-card::after {
  position: absolute;
  right: 24px;
  bottom: 22px;
  width: min(280px, 42%);
  aspect-ratio: 1;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  content: "";
  opacity: 0.78;
}

.scaffold-card::after {
  background:
    linear-gradient(90deg, transparent 46%, rgb(82 111 90 / 40%) 47% 52%, transparent 53%),
    linear-gradient(0deg, transparent 46%, rgb(82 111 90 / 40%) 47% 52%, transparent 53%),
    repeating-linear-gradient(45deg, rgb(127 148 117 / 30%) 0 2px, transparent 2px 16px),
    var(--color-sage-soft);
}

.nano-card::after {
  background:
    radial-gradient(circle at 50% 50%, var(--color-gold) 0 8%, transparent 9%),
    radial-gradient(circle at 26% 34%, var(--color-oxygen) 0 5%, transparent 6%),
    radial-gradient(circle at 68% 30%, var(--color-copper) 0 5%, transparent 6%),
    radial-gradient(circle at 34% 72%, var(--color-sage) 0 5%, transparent 6%),
    radial-gradient(circle at 72% 70%, var(--color-clay) 0 5%, transparent 6%),
    var(--color-gold-wash);
}

.product-kicker {
  margin-bottom: 22px;
  color: var(--color-faint);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.product-card h3 {
  max-width: 420px;
  font-size: clamp(30px, 4.5vw, 44px);
}

.product-card p {
  position: relative;
  z-index: 1;
  max-width: 530px;
  margin-bottom: 30px;
  font-size: 16px;
}

.metric-list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  max-width: 440px;
  margin-bottom: 0;
}

.metric-list div {
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.metric-list dt {
  color: var(--color-faint);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.metric-list dd {
  margin-bottom: 0;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 700;
  text-align: right;
}

.evidence-band {
  background: var(--color-surface);
}

.evidence-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(320px, 1fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: start;
}

.evidence-list {
  display: grid;
  gap: 14px;
}

.evidence-list article {
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-page);
}

.evidence-list span {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--color-gold-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.evidence-list h3 {
  font-size: 18px;
}

.evidence-list p {
  margin-bottom: 0;
  font-size: 14px;
}

.map-band {
  background: var(--color-gold-wash);
}

.track-map {
  display: grid;
  gap: 14px;
}

.track {
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--color-border-strong);
  border-radius: 12px;
  background: rgb(255 253 247 / 72%);
}

.track span {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  font-size: 13px;
  font-weight: 700;
}

.track .track-label {
  color: var(--color-white);
  border-color: var(--color-carbon);
  background: var(--color-carbon);
}

.site-footer {
  justify-content: space-between;
  gap: 20px;
  padding: 28px max(16px, calc((100% - var(--max-page)) / 2));
  color: var(--color-bone);
  background: var(--color-carbon);
}

.site-footer span {
  display: block;
  margin-bottom: 6px;
  color: var(--color-white);
  font-weight: 700;
}

.site-footer p {
  margin-bottom: 0;
  color: var(--color-bone);
  font-size: 14px;
}

.site-footer a {
  color: var(--color-gold-soft);
  font-weight: 700;
}

@media (max-width: 920px) {
  .site-header {
    position: static;
    flex-direction: column;
    align-items: flex-start;
    border-radius: 20px;
  }

  .site-header nav {
    flex-wrap: wrap;
  }

  .hero,
  .section-heading,
  .product-grid,
  .evidence-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .hero::before {
    min-height: 1060px;
    background:
      linear-gradient(180deg, var(--color-carbon) 0%, var(--color-carbon) 74%, transparent 74%),
      linear-gradient(90deg, rgb(21 19 15 / 96%), rgb(42 38 29 / 86%));
  }

  .section-heading {
    align-items: start;
  }

  .product-card {
    min-height: 440px;
  }
}

@media (max-width: 560px) {
  .site-header {
    width: min(100% - 24px, var(--max-page));
    margin-top: 12px;
  }

  .site-header nav {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-header nav a {
    min-width: 0;
  }

  .hero {
    width: min(100% - 24px, var(--max-page));
  }

  h1 {
    font-size: clamp(40px, 15vw, 58px);
  }

  .button,
  .hero-actions {
    width: 100%;
  }

  .lab-grid {
    display: grid;
    grid-template-columns: 1fr;
  }

  .connector {
    width: 1px;
    height: 14px;
    margin-left: 18px;
  }

  .product-card::after {
    width: 170px;
    opacity: 0.4;
  }

  .metric-list div,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .metric-list dd {
    text-align: left;
  }

  .footer-meta {
    align-items: flex-start;
    text-align: left;
  }
}

/* ---------------------------------------------------------------------------
   Enhancements: skip link, list semantics, new sections, hover + motion
   --------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  top: -64px;
  left: 16px;
  z-index: 20;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--color-carbon);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 700;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

/* <ol>/<ul> used for the pipeline + stats need their list chrome reset. */
.lab-grid {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.hero-stats,
.pipeline,
.capability-grid {
  padding: 0;
  list-style: none;
}

/* Smooth the existing interactive states + add a tactile card lift. */
.button,
.site-header nav a,
.node,
.track span,
.product-card,
.pipeline-step,
.capability {
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    background 0.2s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-panel);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 690px;
  margin: 34px 0 0;
}

.hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 16px;
  border: 1px solid rgb(234 217 165 / 22%);
  border-radius: 12px;
  background: rgb(255 253 247 / 6%);
}

.hero-stats strong {
  color: var(--color-white);
  font-size: 14px;
}

.hero-stats span {
  color: var(--color-gold-soft);
  font-size: 12.5px;
  line-height: 1.45;
}

.lab-caption {
  display: block;
  padding: 10px 12px 4px;
  color: var(--color-faint);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.45;
}

.how-band,
.capabilities-band {
  background: var(--color-surface);
}

.evidence-band {
  background: var(--color-page);
}

.pipeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  width: min(var(--max-page), 100%);
  margin: 38px auto 0;
}

.pipeline-step {
  position: relative;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-page);
}

.pipeline-step:hover {
  transform: translateY(-3px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-nav);
}

.pipeline-index {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--color-gold-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.pipeline-step h3 {
  margin-bottom: 8px;
  font-size: 19px;
}

.pipeline-step p {
  margin-bottom: 16px;
  font-size: 14px;
}

.pipeline-artefact {
  display: inline-flex;
  padding: 5px 11px;
  border: 1px solid var(--color-border-strong);
  border-radius: 999px;
  background: var(--color-gold-wash);
  color: var(--color-charcoal);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  width: min(var(--max-page), 100%);
  margin: 38px auto 0;
}

.capability {
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-page);
}

.capability:hover {
  transform: translateY(-3px);
  border-color: var(--color-border-strong);
}

.capability h3 {
  position: relative;
  margin-bottom: 10px;
  padding-left: 16px;
  font-size: 18px;
}

.capability h3::before {
  position: absolute;
  top: 4px;
  left: 0;
  width: 6px;
  height: 16px;
  border-radius: 2px;
  background: var(--color-gold);
  content: "";
}

.capability p {
  margin-bottom: 0;
  font-size: 14px;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  text-align: right;
}

.footer-fine {
  margin: 0;
  color: var(--color-faint);
  font-family: var(--font-mono);
  font-size: 12px;
}

@media (max-width: 920px) {
  .hero-stats,
  .pipeline,
  .capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .hero-stats,
  .pipeline,
  .capability-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}