:root {
  --navy: rgb(28, 46, 58);
  --navy-2: #203949;
  --text: #10161d;
  --muted: #5d6975;
  --line: #e5e8ec;
  --bg: #ffffff;
  --soft: #f4f6f8;
  --accent: #0d93d1;
  --max: 1180px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

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

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

.container {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

.narrow {
  max-width: 900px;
}

.site-header,
.site-footer {
  background: var(--navy);
  color: #fff;
}

.nav-row {
  min-height: 72px;
  padding: 0.5rem 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
}

.brand img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

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

.main-nav a,
.nav-link {
  color: rgba(255,255,255,0.88);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 0.5rem 0;
  font-size: 0.9rem;
}

.main-nav a.active {
  color: #ffffff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 1rem;
  border-radius: 2px;
  background: var(--navy);
  color: #fff;
  border: 1px solid var(--navy);
  font-size: 0.88rem;
  font-weight: 700;
}

.button.small {
  min-height: 38px;
  padding: 0 0.85rem;
}

.button.light {
  background: #ffffff;
  color: var(--text);
  border-color: #ffffff;
}

.button.ghost {
  background: transparent;
  color: var(--navy);
  border-color: #c9d1d8;
}

.page-shell {
  background: #fff;
}

.hero-zone {
  padding: 1.4rem 0 1.2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.9fr 0.95fr;
  gap: 1rem;
  align-items: start;
}

.card {
  background: #fff;
}

.thumb {
  background: linear-gradient(135deg, #d8e7ef, #8bb2c9);
  border: 1px solid var(--line);
}

.thumb-sm {
  aspect-ratio: 4 / 2.2;
}

.thumb-xl {
  aspect-ratio: 16 / 10;
}

.card-thumb {
  aspect-ratio: 16 / 10;
  margin-bottom: 0.7rem;
}

.alt-1 { background: linear-gradient(135deg, #d5ecd9, #84b894); }
.alt-2 { background: linear-gradient(135deg, #f0e0d1, #c79e76); }
.alt-3 { background: linear-gradient(135deg, #d9dcee, #848cb8); }
.alt-4 { background: linear-gradient(135deg, #ece2d3, #c7ad87); }
.alt-5 { background: linear-gradient(135deg, #f4dcd6, #cf8a7d); }
.alt-6 { background: linear-gradient(135deg, #d8eef4, #77afbe); }
.alt-7 { background: linear-gradient(135deg, #f0e7cf, #c7b06d); }
.alt-8 { background: linear-gradient(135deg, #dce8d7, #98b38b); }

.card-body {
  padding-top: 0.55rem;
}

.hero-card .card-body {
  padding-top: 0.75rem;
}

.hero-card h1,
.dataset-hero h1 {
  margin: 0.15rem 0 0.7rem;
  max-width: 16ch;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.mini-feature h3,
.mini-side h3,
.collection-card h3 {
  margin: 0 0 0.3rem;
  font-size: 1.02rem;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.summary,
.mini-feature p,
.meta,
.dataset-card p,
.banner-copy p,
.footer-brand-wrap p,
.collection-card p,
.dataset-lead,
.content-main p,
.side-card p,
.use-list {
  color: var(--muted);
}

.eyebrow,
.section-label {
  display: inline-block;
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.side-stack {
  display: grid;
  gap: 1rem;
}

.featured-strip {
  padding: 0.8rem 0 1.3rem;
}

.featured-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 0.6rem;
}

.feature-tile {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 0.75rem;
  align-items: start;
}

.tile-thumb {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #d8e7ef, #8bb2c9);
  border: 1px solid var(--line);
}

.feature-tile h4,
.dataset-card h3,
.banner-copy h2,
.content-block h2,
.side-card h2 {
  margin: 0 0 0.28rem;
  font-size: 1.04rem;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.feature-tile p {
  margin: 0;
  color: var(--muted);
  font-size: 0.83rem;
}

.banner-slot {
  padding: 0.2rem 0 1.75rem;
}

.banner-box {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #f7fafc, #edf4f7);
  padding: 1.35rem;
  display: grid;
  grid-template-columns: 1.7fr 0.9fr;
  gap: 1rem;
  align-items: center;
}

.banner-copy h2 {
  font-size: 1.42rem;
}

.banner-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
}

.banner-stats div {
  background: rgba(255,255,255,0.8);
  border: 1px solid #dde5ea;
  padding: 0.85rem;
  text-align: center;
}

.banner-stats strong {
  display: block;
  font-size: 1.15rem;
  color: var(--navy);
}

.banner-stats span {
  color: var(--muted);
  font-size: 0.82rem;
}

.collections-zone {
  padding: 0 0 1.6rem;
}

.collections-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.collection-card {
  border: 1px solid var(--line);
  background: #fff;
  padding: 1rem;
}

.collection-card span {
  display: inline-block;
  margin-top: 0.8rem;
  color: var(--navy);
  font-size: 0.85rem;
  font-weight: 700;
}

.latest-zone {
  padding: 0.25rem 0 3rem;
}

.section-head {
  margin-bottom: 0.9rem;
}

.dataset-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem 1rem;
}

.dataset-card h3 {
  font-size: 1.14rem;
}

.dataset-card p {
  margin: 0 0 0.45rem;
  font-size: 0.92rem;
}

.see-all {
  margin-top: 1.4rem;
}

.see-all a {
  color: var(--text);
  font-weight: 700;
}

.dataset-page {
  min-height: 60vh;
}

.dataset-hero {
  padding: 2rem 0 1.2rem;
  border-bottom: 1px solid var(--line);
}

.dataset-lead {
  font-size: 1.05rem;
  max-width: 62ch;
}

.dataset-top-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 1rem;
}

.dataset-content-zone {
  padding: 1.6rem 0 3rem;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.85fr);
  gap: 2rem;
}

.content-block + .content-block {
  margin-top: 2rem;
}

.content-block h2,
.side-card h2 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
}

.field-table {
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.field-row {
  display: grid;
  grid-template-columns: 220px 1fr;
}

.field-row > div {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0.8rem;
}

.field-head {
  font-weight: 700;
  background: var(--soft);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: #f4f6f8;
  padding: 0.15rem 0.35rem;
}

.use-list {
  padding-left: 1rem;
  margin: 0;
}

.content-side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.side-card {
  border: 1px solid var(--line);
  background: var(--soft);
  padding: 1rem;
}

.side-links {
  display: grid;
  gap: 0.55rem;
}

.side-links a {
  color: var(--navy);
  font-weight: 700;
}

.stat-list {
  margin: 0.5rem 0 0;
  display: grid;
  gap: 0.8rem;
}

.stat-list div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
}

.stat-list div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.stat-list dt {
  color: var(--muted);
}

.stat-list dd {
  margin: 0;
  color: var(--heading);
  font-weight: 800;
}

.footer-links-row {
  padding: 1.35rem 0 0.4rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem 1rem;
}

.footer-links a {
  color: rgba(255,255,255,0.9);
  font-size: 0.76rem;
  font-weight: 600;
}

.footer-brand-wrap {
  padding: 1.8rem 0 2rem;
  text-align: center;
}

.footer-brand-wrap h2 {
  margin: 0 0 0.75rem;
  font-size: 2rem;
  letter-spacing: -0.03em;
}

.footer-brand-wrap p {
  max-width: 640px;
  margin: 0 auto;
  color: rgba(255,255,255,0.78);
}

.subscribe-bar {
  margin: 1.25rem auto 0;
  display: flex;
  justify-content: center;
  gap: 0;
  max-width: 420px;
}

.subscribe-bar input {
  flex: 1;
  min-height: 40px;
  border: 1px solid rgba(255,255,255,0.22);
  background: rgba(255,255,255,0.08);
  color: #fff;
  padding: 0 0.85rem;
}

.subscribe-bar input::placeholder {
  color: rgba(255,255,255,0.7);
}

@media (max-width: 1120px) {
  .nav-row,
  .banner-box,
  .dataset-grid,
  .featured-row,
  .collections-grid,
  .content-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .hero-grid > *:nth-child(2) {
    grid-column: span 2;
  }

  .main-nav {
    gap: 0.75rem;
  }

  .field-row {
    grid-template-columns: 170px 1fr;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(var(--max), calc(100% - 1.25rem));
  }

  .nav-row,
  .hero-grid,
  .dataset-grid,
  .featured-row,
  .banner-box,
  .collections-grid,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid > *:nth-child(2) {
    grid-column: auto;
  }

  .featured-row {
    gap: 1.2rem;
  }

  .feature-tile {
    grid-template-columns: 72px 1fr;
  }

  .nav-actions {
    display: none;
  }

  .footer-links {
    justify-content: start;
  }

  .subscribe-bar {
    flex-direction: column;
    gap: 0.6rem;
  }

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