:root {
  --color-ink: #1b2a23;
  --color-muted: #4b5a51;
  --color-accent: #d26a2d;
  --color-accent-strong: #b7521e;
  --color-bg: #f5f1e6;
  --color-panel: #ffffff;
  --color-soft: #efe8d8;
  --color-line: rgba(27, 42, 35, 0.12);
  --shadow-soft: 0 18px 40px rgba(18, 28, 22, 0.15);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "Consolas", "Courier New", monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  font-family: var(--font-body);
  color: var(--color-ink);
  line-height: 1.6;
  overflow-y: scroll;
  background: radial-gradient(circle at 15% 20%, rgba(214, 175, 107, 0.2), transparent 45%),
    radial-gradient(circle at 80% 10%, rgba(35, 93, 70, 0.15), transparent 40%),
    linear-gradient(160deg, #f8f4ea 0%, #f0ede2 35%, #e9efe8 100%);
}

p {
  margin-bottom: 0.9rem;
}

p:last-child {
  margin-bottom: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: repeating-linear-gradient(120deg, rgba(27, 42, 35, 0.05) 0, rgba(27, 42, 35, 0.05) 1px, transparent 1px, transparent 120px);
  opacity: 0.5;
  pointer-events: none;
  z-index: -1;
}

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

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

a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible {
  outline: 2px solid rgba(210, 106, 45, 0.6);
  outline-offset: 2px;
}

.site-container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(245, 241, 230, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

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

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.95rem;
}

.main-nav a {
  padding: 0.2rem 0.1rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-accent-strong);
  border-color: var(--color-accent-strong);
}

.hero {
  position: relative;
  padding: 3.2rem 0 3.5rem;
  overflow: hidden;
}

.hero--compact {
  padding: 3.2rem 0 2.6rem;
}

.hero--compact .hero-title {
  font-size: clamp(2rem, 3.2vw, 2.8rem);
}

.hero::after {
  content: "";
  position: absolute;
  right: -20%;
  top: -30%;
  width: 65%;
  height: 120%;
  background: radial-gradient(circle at 30% 30%, rgba(210, 106, 45, 0.2), transparent 60%),
    radial-gradient(circle at 70% 60%, rgba(31, 77, 59, 0.2), transparent 55%);
  opacity: 0.7;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem;
  align-items: start;
  position: relative;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
  max-width: 34rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: 0.8rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.hero-card {
  background: var(--color-panel);
  border-radius: var(--radius-xl);
  padding: 2rem;
  border: 1px solid rgba(27, 42, 35, 0.08);
  box-shadow: var(--shadow-soft);
}

.hero-card ul {
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.hero-card li {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  font-size: 0.98rem;
  color: var(--color-muted);
}

.hero-card strong {
  color: var(--color-ink);
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.3rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 12px 20px rgba(210, 106, 45, 0.25);
}

.btn-primary:hover {
  background: var(--color-accent-strong);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  border-color: rgba(27, 42, 35, 0.25);
  color: var(--color-ink);
}

.btn-secondary:hover {
  border-color: var(--color-accent-strong);
  color: var(--color-accent-strong);
}

.section {
  padding: 3.5rem 0;
}

.section-heading {
  display: grid;
  gap: 0.6rem;
  max-width: 680px;
  margin-bottom: 2rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 2.4vw, 2.3rem);
}

.section-lead {
  color: var(--color-muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.4rem;
}

.card {
  background: var(--color-panel);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  border: 1px solid rgba(27, 42, 35, 0.08);
  box-shadow: 0 12px 30px rgba(24, 34, 27, 0.08);
  display: grid;
  gap: 0.8rem;
  min-height: 180px;
}

.example-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.6rem;
}

.example-card {
  background: var(--color-panel);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(27, 42, 35, 0.08);
  box-shadow: 0 12px 30px rgba(24, 34, 27, 0.08);
  overflow: hidden;
}

.example-preview {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 1;
  border-bottom: 1px solid rgba(27, 42, 35, 0.08);
  background: linear-gradient(140deg, #f3efe6 0%, #e6ede6 40%, #f7f4ec 100%);
}

.dataset-map-preview {
  aspect-ratio: 2 / 1;
}

.example-preview iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

@media (max-width: 720px) {
  .example-preview {
    aspect-ratio: 1 / 1;
    width: min(100%, 320px);
    max-width: 320px;
    margin: 0 auto;
  }

  .style-preview {
    aspect-ratio: 1 / 1;
    width: min(100%, 320px);
    max-width: 320px;
    margin: 0 auto;
  }
}

.example-content {
  padding: 1.2rem 1.4rem 1.5rem;
  display: grid;
  gap: 0.75rem;
}

.example-meta {
  list-style: none;
  display: grid;
  gap: 0.3rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.example-meta strong {
  color: var(--color-ink);
}

.card p,
.feature-card p,
.support-card p,
.style-card p,
.callout p,
.profile-card p {
  margin: 0;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.card-text {
  color: var(--color-muted);
  font-size: 0.98rem;
}

.card-link {
  color: var(--color-accent-strong);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.card-link span {
  font-size: 1.2rem;
}

.card-link.is-disabled {
  color: var(--color-muted);
  cursor: default;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.4rem;
}

.feature-card {
  background: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  border: 1px solid rgba(27, 42, 35, 0.08);
  display: grid;
  gap: 0.8rem;
}

.bullet-list {
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.bullet-list li {
  position: relative;
  padding-left: 1.2rem;
}

.bullet-list li::before {
  content: "\2022";
  position: absolute;
  left: 0;
  color: var(--color-accent-strong);
  font-weight: 600;
}

.dataset-map-panel {
  margin-top: 1.6rem;
}

.dataset-map {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.dataset-map-legend {
  display: grid;
  gap: 0.7rem;
  align-content: center;
  justify-items: center;
  text-align: center;
}

.dataset-map-legend h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.dataset-map-legend p {
  color: var(--color-muted);
  margin: 0;
}

.dataset-legend-items {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.9rem;
}

.dataset-legend-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.dataset-legend-swatch {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid rgba(27, 42, 35, 0.2);
  flex-shrink: 0;
}

.dataset-legend-swatch--available {
  background: #4caf50;
}

.dataset-legend-swatch--missing {
  background: #e57373;
}

.dataset-legend-note {
  font-size: 0.85rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  background: rgba(31, 77, 59, 0.12);
  color: var(--color-ink);
}

.callout {
  background: var(--color-panel);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  border: 1px solid rgba(210, 106, 45, 0.2);
  box-shadow: var(--shadow-soft);
}

.callout h3 {
  font-family: var(--font-display);
  margin-bottom: 0.6rem;
}

.callout p {
  color: var(--color-muted);
}

.code-block {
  background: #1f2b24;
  color: #f5f1e6;
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-panel);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.table-wrapper {
  overflow-x: auto;
}

.table-wrapper .comparison-table {
  min-width: 540px;
}

.comparison-table th,
.comparison-table td {
  text-align: left;
  padding: 1rem;
  border-bottom: 1px solid rgba(27, 42, 35, 0.08);
  font-size: 0.95rem;
}

.comparison-table th {
  font-family: var(--font-display);
  background: rgba(31, 77, 59, 0.08);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.layer-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.layer-search {
  flex: 1 1 260px;
  display: grid;
  gap: 0.3rem;
}

.layer-search label {
  font-size: 0.9rem;
  color: var(--color-muted);
}

.layer-search input {
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(27, 42, 35, 0.2);
  background: rgba(255, 255, 255, 0.8);
  font-family: var(--font-body);
}

.layer-count {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.layer-list {
  display: grid;
  gap: 0.7rem;
}

.layer-card {
  background: var(--color-panel);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(27, 42, 35, 0.12);
  padding: 0.45rem 0.8rem;
}

.layer-card[open] {
  border-color: rgba(210, 106, 45, 0.35);
  box-shadow: 0 16px 30px rgba(24, 34, 27, 0.12);
}

.layer-card summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  gap: 0.25rem;
  padding: 0.5rem 0.2rem;
  position: relative;
  padding-right: 2rem;
}

.layer-card summary::-webkit-details-marker {
  display: none;
}

.layer-card summary::after {
  content: "+";
  position: absolute;
  right: 0.4rem;
  top: 0.55rem;
  font-weight: 600;
  color: var(--color-muted);
}

.layer-card[open] summary::after {
  content: "–";
}

.layer-title {
  font-family: var(--font-display);
  font-size: 0.98rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: baseline;
}

.layer-id {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
}

.layer-meta {
  font-size: 0.8rem;
  color: var(--color-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.layer-body {
  padding: 0.4rem 0.2rem 0.6rem;
  display: grid;
  gap: 0.6rem;
  color: var(--color-muted);
}

.attribute-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  font-size: 0.82rem;
}

.attribute-item {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  background: rgba(31, 77, 59, 0.12);
  color: var(--color-ink);
}


.style-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.style-card {
  background: var(--color-panel);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  border: 1px solid rgba(27, 42, 35, 0.08);
  display: grid;
  gap: 1rem;
}

.style-preview {
  width: 100%;
  aspect-ratio: 2 / 1;
  border-radius: var(--radius-md);
  border: 1px solid rgba(27, 42, 35, 0.12);
  position: relative;
  overflow: hidden;
}

.style-preview iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.style-preview--neutral {
  background: linear-gradient(140deg, #f3efe6 0%, #e6ede6 40%, #f7f4ec 100%);
}

.style-preview--contrast {
  background: linear-gradient(140deg, #1f4d3b 0%, #f2b76b 100%);
}

.style-preview--topo {
  background: repeating-linear-gradient(120deg, rgba(27, 42, 35, 0.15) 0, rgba(27, 42, 35, 0.15) 1px, transparent 1px, transparent 14px),
    linear-gradient(160deg, #f5f0e5 0%, #dce6d6 100%);
}

.style-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.6rem;
}

.style-category-heading {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1.2rem;
  max-width: 680px;
}

.style-category-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
}

.style-category-lead {
  color: var(--color-muted);
}

.style-categories + .callout {
  margin-top: 2.4rem;
}

.profile-card {
  display: grid;
  gap: 1rem;
  background: var(--color-panel);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  border: 1px solid rgba(27, 42, 35, 0.08);
  box-shadow: var(--shadow-soft);
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-weight: 600;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.4rem;
}

.support-card {
  background: rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  border: 1px solid rgba(27, 42, 35, 0.08);
  display: grid;
  gap: 0.8rem;
}

.qr-wrapper {
  background: var(--color-panel);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  border: 1px solid rgba(27, 42, 35, 0.08);
  display: grid;
  gap: 0.6rem;
  justify-items: center;
}

.site-footer {
  padding: 2.5rem 0 2rem;
  border-top: 1px solid var(--color-line);
  background: rgba(245, 241, 230, 0.8);
}

.footer-grid {
  display: grid;
  gap: 1rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  font-weight: 600;
}

.footer-note {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.reveal {
  animation: fade-up 0.6s ease both;
  animation-delay: var(--delay, 0s);
}

.stagger > * {
  animation: fade-up 0.6s ease both;
}

.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.12s; }
.stagger > *:nth-child(3) { animation-delay: 0.18s; }
.stagger > *:nth-child(4) { animation-delay: 0.24s; }
.stagger > *:nth-child(5) { animation-delay: 0.3s; }

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .hero {
    padding: 3.2rem 0 3rem;
  }

}

@media (max-width: 720px) {
  .main-nav {
    gap: 0.6rem;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-actions {
    width: 100%;
  }

}

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

  .reveal,
  .stagger > * {
    animation: none;
  }
}