:root {
  --paper: #f7f1e8;
  --paper-deep: #eadcc8;
  --ink: #1e2527;
  --muted: #657071;
  --line: #d4c4ae;
  --clay: #a14f38;
  --clay-dark: #763829;
  --teal: #1f6f6d;
  --teal-dark: #164f4e;
  --gold: #c69a40;
  --white: #fffaf2;
  --shadow: 0 18px 48px rgba(30, 37, 39, 0.12);
  --radius: 8px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
}

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

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 20;
  transform: translateY(-180%);
  background: var(--ink);
  color: var(--white);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius);
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(30, 37, 39, 0.12);
  background: rgba(247, 241, 232, 0.92);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(1160px, calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: var(--white);
  color: var(--white);
  border: 2px solid var(--gold);
  border-radius: 50%;
  font-size: 0.82rem;
  color: var(--clay-dark);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--ink);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  cursor: pointer;
}

.nav-toggle span[aria-hidden="true"] {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.hero {
  min-height: clamp(560px, 76vh, 720px);
  display: grid;
  align-items: end;
  width: 100%;
  margin: 0;
  padding: clamp(5rem, 9vw, 8rem) max(32px, calc((100vw - 1160px) / 2)) clamp(3rem, 6vw, 5rem);
  background:
    linear-gradient(90deg, rgba(247, 241, 232, 0.98) 0%, rgba(247, 241, 232, 0.92) 42%, rgba(247, 241, 232, 0.38) 72%),
    url("assets/graphics/blueprint-overview.png") center / cover no-repeat;
  color: var(--ink);
}

.brand-banner {
  width: min(1160px, calc(100% - 32px));
  margin: clamp(1.5rem, 4vw, 3rem) auto 0;
}

.brand-banner img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border: 1px solid rgba(30, 37, 39, 0.14);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--clay-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

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

h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.5rem, 8vw, 7.5rem);
  font-weight: 700;
}

h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 4rem);
  font-weight: 700;
}

h3 {
  font-size: 1.08rem;
}

.hero-lede {
  max-width: 56ch;
  margin: 1.2rem 0 0;
  color: #293437;
  font-size: clamp(1.08rem, 1.7vw, 1.28rem);
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.6rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.75rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  background: var(--teal);
  color: var(--white);
}

.button.primary:hover,
.button.primary:focus {
  background: var(--teal-dark);
}

.button.secondary {
  border-color: var(--line);
  background: var(--white);
  color: var(--ink);
}

.button.ghost {
  border-color: var(--clay);
  background: var(--clay);
  color: var(--white);
}

.button.ghost:hover,
.button.ghost:focus {
  border-color: var(--clay-dark);
  background: var(--clay-dark);
}

.hero-media {
  align-self: stretch;
  display: grid;
  align-items: center;
}

.hero-v2 {
  grid-template-columns: 1fr;
}

.hero-v2 h1 {
  max-width: 11ch;
  white-space: normal;
  font-size: clamp(4rem, 6.8vw, 7rem);
}

.hero-v2 .eyebrow {
  color: var(--clay-dark);
}

.feature-carousel,
.apparatus-carousel {
  position: relative;
  border: 1px solid rgba(30, 37, 39, 0.14);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.feature-carousel {
  align-self: center;
}

.carousel-track {
  position: relative;
}

.carousel-slide {
  display: none;
  margin: 0;
}

.carousel-slide.is-active {
  display: block;
}

.carousel-slide img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #111;
}

.carousel-slide figcaption {
  min-height: 72px;
  padding: 1rem 1.1rem;
  color: #344044;
  font-weight: 700;
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-top: 1px solid var(--line);
}

.carousel-button {
  min-height: 40px;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
}

.carousel-button:hover,
.carousel-button:focus {
  background: var(--paper-deep);
}

.carousel-status {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.hero-media video,
.media-grid video {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(30, 37, 39, 0.15);
  border-radius: var(--radius);
  background: #111;
  box-shadow: var(--shadow);
}

.section {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 6.5rem) 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  border-top: 1px solid var(--line);
}

.prose p {
  margin: 0 0 1rem;
  color: #334044;
  font-size: 1.04rem;
}

.section-heading {
  display: grid;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.section-heading.narrow {
  max-width: 760px;
}

.section-heading p {
  max-width: 68ch;
  margin: 0;
  color: #334044;
}

.timeline-section,
.method-section,
.media-section,
.sources-section {
  border-top: 1px solid var(--line);
}

.apparatus-showcase,
.visual-dossier,
.article-grid-section,
.source-library {
  border-top: 1px solid var(--line);
}

.dossier-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.dossier-card {
  margin: 0;
  border: 1px solid rgba(30, 37, 39, 0.14);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.dossier-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.dossier-card figcaption {
  padding: 1rem;
  color: #344044;
}

.apparatus-carousel {
  max-width: 980px;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.timeline li {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 1rem;
  padding: 1.2rem;
  border: 1px solid rgba(30, 37, 39, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 250, 242, 0.7);
}

.timeline time {
  color: var(--clay-dark);
  font-weight: 900;
}

.timeline p,
.principle-grid p,
.equipment-card p,
.media-grid p,
.source-list {
  margin: 0.45rem 0 0;
  color: #3e4a4d;
}

.split {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
  border-top: 1px solid var(--line);
}

.portrait-panel {
  min-height: 320px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.portrait-panel img {
  width: min(320px, 82%);
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.principle-grid article,
.media-grid article,
.audio-card,
.equipment-card {
  border: 1px solid rgba(30, 37, 39, 0.12);
  border-radius: var(--radius);
  background: var(--white);
}

.principle-grid article {
  padding: 1.2rem;
}

.equipment-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(1.25rem, 4vw, 3rem);
  align-items: center;
}

.equipment-visual {
  min-height: 360px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.equipment-visual img {
  width: min(520px, 92%);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.tab {
  min-height: 42px;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
}

.tab.is-active {
  background: var(--clay);
  color: var(--white);
  border-color: var(--clay);
}

.equipment-card {
  padding: 1.4rem;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.media-grid article {
  padding: 1rem;
}

.media-grid h3 {
  margin-bottom: 0.8rem;
}

.audio-card {
  grid-column: 1 / -1;
}

.audio-card audio {
  width: 100%;
  margin-top: 0.9rem;
}

.cta-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: center;
  border-top: 1px solid var(--line);
}

.newsletter-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 1.1fr);
  gap: clamp(1.25rem, 4vw, 3rem);
  align-items: center;
  border-top: 1px solid var(--line);
}

.newsletter-copy p {
  margin: 1rem 0 0;
  color: #3e4a4d;
}

.newsletter-form {
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.newsletter-form label {
  display: block;
  margin-bottom: 0.45rem;
  font-weight: 800;
}

.form-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.65rem;
}

input[type="email"] {
  width: 100%;
  min-height: 46px;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.form-note {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.source-list {
  padding-left: 1.2rem;
}

.source-list li {
  margin-bottom: 0.65rem;
}

.article-index-hero {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 6rem) 0 clamp(2rem, 5vw, 4rem);
}

.article-index-hero h1,
.article-hero h1 {
  font-size: clamp(2.8rem, 6vw, 5.8rem);
}

.article-index-hero p:not(.eyebrow),
.article-hero p:not(.eyebrow) {
  max-width: 760px;
  color: #334044;
  font-size: 1.12rem;
}

.article-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.article-card-grid.compact {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.article-card {
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  gap: 0.5rem;
  min-height: 100%;
  border: 1px solid rgba(30, 37, 39, 0.12);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
  overflow: hidden;
}

.article-card:hover,
.article-card:focus {
  border-color: var(--clay);
  box-shadow: 0 12px 32px rgba(30, 37, 39, 0.12);
}

.article-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #111;
}

.article-card span,
.article-card h3,
.article-card p {
  margin-left: 1rem;
  margin-right: 1rem;
}

.article-card span {
  color: var(--clay-dark);
  font-size: 0.8rem;
  font-weight: 900;
}

.article-card h3 {
  margin-top: 0;
}

.article-card p {
  margin-top: 0;
  margin-bottom: 1rem;
  color: #3e4a4d;
}

.center-action {
  display: flex;
  justify-content: center;
  margin-top: 1.5rem;
}

.source-library-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.source-library-grid article {
  padding: 1.2rem;
  border: 1px solid rgba(30, 37, 39, 0.12);
  border-radius: var(--radius);
  background: var(--white);
}

.source-library-grid p {
  margin: 0.55rem 0 0;
  color: #3e4a4d;
}

.source-library-grid a {
  color: var(--teal-dark);
  font-weight: 800;
}

.article-page {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding-top: 1.5rem;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 800;
}

.breadcrumbs a {
  color: var(--teal-dark);
  text-decoration: none;
}

.breadcrumbs span::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--line);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0 0 1.5rem;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.article-hero {
  padding: clamp(3rem, 7vw, 6rem) 0 2rem;
}

.article-hero img {
  width: 100%;
  margin-top: 2rem;
  border: 1px solid rgba(30, 37, 39, 0.14);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.article-body {
  max-width: 760px;
  padding-bottom: 2rem;
}

.article-body p {
  color: #334044;
  font-size: 1.06rem;
}

.article-body h2 {
  margin-top: 2rem;
  font-family: inherit;
  font-size: 1.35rem;
}

.article-sources {
  margin-top: 2.5rem;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.article-sources ul {
  margin: 0.8rem 0 0;
  padding-left: 1.2rem;
}

.article-sources li {
  margin-bottom: 0.55rem;
}

.article-sources a {
  color: var(--teal-dark);
  font-weight: 800;
}

.article-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 0 3rem;
  border-top: 1px solid var(--line);
}

.article-nav a {
  color: var(--teal-dark);
  font-weight: 900;
  text-decoration: none;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

.policy-page {
  min-height: calc(100vh - 160px);
}

.policy-section {
  max-width: 780px;
}

.policy-section h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  margin-bottom: 1rem;
}

.policy-section h2 {
  margin-top: 2rem;
  font-family: inherit;
  font-size: 1.25rem;
}

.policy-section p {
  color: #334044;
}

@media (max-width: 1080px) {
  .hero,
  .intro-grid,
  .split,
  .equipment-layout,
  .newsletter-section,
  .cta-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: clamp(520px, 72vh, 680px);
  }

  .hero-v2 h1 {
    white-space: normal;
    font-size: clamp(3.6rem, 14vw, 5.2rem);
  }

  .hero-media {
    align-self: auto;
  }

  .principle-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .article-card-grid,
  .article-card-grid.compact,
  .dossier-grid,
  .source-library-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cta-actions {
    margin-top: 0;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open,
  .nav-links.is-static {
    display: flex;
  }

  .nav-links a {
    padding: 0.55rem 0.35rem;
  }

  .timeline li {
    grid-template-columns: 1fr;
  }

  .principle-grid,
  .media-grid,
  .article-card-grid,
  .article-card-grid.compact,
  .dossier-grid,
  .source-library-grid {
    grid-template-columns: 1fr;
  }

  .article-nav {
    flex-direction: column;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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