:root {
  --bg: #f5efe4;
  --bg-deep: #efe3cf;
  --paper: rgba(255, 252, 246, 0.84);
  --ink: #1d2a33;
  --muted: #5f6b72;
  --line: rgba(29, 42, 51, 0.12);
  --accent: #0d6c74;
  --accent-strong: #0b4b56;
  --accent-soft: #d8efe7;
  --signal: #c76630;
  --shadow: 0 24px 70px rgba(30, 36, 32, 0.12);
  --radius: 24px;
  --radius-sm: 16px;
  --max-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(199, 102, 48, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(13, 108, 116, 0.14), transparent 30%),
    linear-gradient(180deg, var(--bg), #f8f4eb 55%, var(--bg-deep));
  font-family: "Aptos", "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

a {
  color: inherit;
}

button {
  font: inherit;
}

.page-shell {
  min-height: 100vh;
}

.site-header,
main,
.site-footer {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0 12px;
  backdrop-filter: blur(18px);
}

.brand {
  font-family: "Palatino Linotype", "Book Antiqua", Georgia, serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: 1.45fr 0.9fr;
  gap: 24px;
  padding: 48px 0 24px;
}

.hero-copy,
.hero-panel,
.text-panel,
.feature-card,
.resource-card,
.demo-frame-wrap {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 40px;
}

.hero h1,
.section-heading h2,
.lightbox-copy h3 {
  margin: 0;
  font-family: "Palatino Linotype", "Book Antiqua", Georgia, serif;
  line-height: 1.08;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.8rem);
  max-width: 11ch;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--signal);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-weight: 700;
}

.hero-text,
.section-heading,
.resource-meta,
.resource-title,
.text-panel p,
.feature-card p,
.demo-copy p,
.site-footer p {
  color: var(--muted);
}

.hero-actions,
.resource-actions,
.gallery-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin-top: 28px;
}

.button,
.text-link {
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  text-decoration: none;
}

.button:hover,
.button:focus-visible,
.text-link:hover,
.text-link:focus-visible,
.gallery-card:hover,
.gallery-card:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #f8fbfb;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--accent-strong);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.6);
}

.hero-panel {
  padding: 18px;
  display: grid;
  gap: 14px;
  align-content: start;
}

.metric-card {
  padding: 18px;
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(232, 244, 240, 0.72));
  border: 1px solid rgba(13, 108, 116, 0.16);
}

.metric-label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.section {
  padding: 44px 0 18px;
}

.section-heading {
  margin-bottom: 18px;
}

.section-heading h2 {
  font-size: clamp(1.9rem, 4vw, 3rem);
}

.overview-grid,
.cards-grid,
.resource-grid,
.demo-layout {
  display: grid;
  gap: 20px;
}

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

.cards-grid,
.resource-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.text-panel,
.feature-card,
.resource-card {
  padding: 24px;
}

.section-spotlight {
  padding-top: 54px;
}

.architecture-intro {
  margin-bottom: 22px;
}

.spotlight-figure {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 24px;
  align-items: center;
  margin-bottom: 26px;
}

.spotlight-figure.reverse {
  grid-template-columns: minmax(320px, 0.8fr) minmax(0, 1.2fr);
}

.focus-figure {
  margin: 0;
  padding: 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.focus-figure img {
  width: 100%;
  border-radius: 18px;
  background: #ffffff;
}

.focus-figure figcaption {
  margin-top: 14px;
  color: var(--muted);
}

.focus-copy {
  padding: 8px 0;
}

.mini-points p {
  margin: 0 0 12px;
  color: var(--muted);
}

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

.text-panel h3,
.feature-card h3,
.resource-card h3,
.demo-copy h3 {
  margin-top: 0;
  font-family: "Palatino Linotype", "Book Antiqua", Georgia, serif;
  font-size: 1.35rem;
}

.demo-copy {
  padding: 12px 0;
}

.inline-list,
.resource-list {
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.demo-frame-wrap {
  overflow: hidden;
}

.demo-frame {
  width: 100%;
  min-height: 620px;
  border: 0;
  background: #ffffff;
}

.resource-title {
  margin: 4px 0 10px;
  font-weight: 600;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.gallery-card {
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  text-align: left;
  background: var(--paper);
  box-shadow: var(--shadow);
  cursor: pointer;
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #f0ede5;
}

.gallery-card span {
  display: block;
  padding: 14px;
  font-size: 0.95rem;
  color: var(--ink);
}

.gallery-links {
  margin-top: 18px;
}

.text-link {
  color: var(--accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.site-footer {
  padding: 36px 0 48px;
}

.lightbox {
  position: fixed;
  inset: 0;
  display: none;
  padding: 32px 20px;
  background: rgba(16, 24, 24, 0.78);
  z-index: 40;
}

.lightbox.is-open {
  display: grid;
  place-items: center;
}

.lightbox-content {
  width: min(1100px, 100%);
  max-height: calc(100vh - 64px);
  overflow: auto;
  background: #fbf8f1;
  border-radius: 24px;
  padding: 20px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
}

.lightbox-content img {
  width: 100%;
  max-height: 72vh;
  object-fit: contain;
  border-radius: 18px;
  background: #fff;
}

.lightbox-copy {
  padding-top: 14px;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  border: 0;
  border-radius: 999px;
  padding: 10px 14px;
  background: #fff;
  cursor: pointer;
}

body.lightbox-open {
  overflow: hidden;
}

@media (max-width: 1080px) {
  .hero,
  .overview-grid,
  .demo-layout,
  .cards-grid,
  .resource-grid,
  .spotlight-figure,
  .spotlight-figure.reverse,
  .cards-grid-3 {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-copy {
    padding: 28px 24px;
  }

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

  .demo-frame {
    min-height: 720px;
  }
}