:root {
  --bg: #f5f1e8;
  --bg-strong: #efe7d6;
  --surface: rgba(255, 252, 245, 0.82);
  --surface-strong: #fffaf0;
  --text: #1f2321;
  --muted: #5d645d;
  --line: rgba(31, 35, 33, 0.12);
  --accent: #0f766e;
  --accent-strong: #134e4a;
  --shadow: 0 18px 50px rgba(34, 39, 35, 0.08);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 999px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.14), transparent 28%),
    radial-gradient(circle at right 20%, rgba(180, 83, 9, 0.1), transparent 24%),
    linear-gradient(180deg, #fbf7ef 0%, var(--bg) 100%);
  font-family: "Avenir Next", Avenir, "Segoe UI", sans-serif;
  line-height: 1.5;
}

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

p,
h1,
h2,
h3,
ul {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

.page-shell {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
  padding: 1.25rem 0 2.5rem;
}

.site-header,
.site-footer,
.hero,
.section {
  position: relative;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  margin-top: 0.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 250, 240, 0.7);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: block;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.8rem;
  object-fit: contain;
  box-shadow: 0 8px 24px rgba(19, 78, 74, 0.12);
}

.brand-text {
  font-size: 1rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.95fr);
  gap: 1.5rem;
  padding: 4.5rem 0 2rem;
  align-items: end;
}

.eyebrow,
.section-label,
.panel-label {
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
}

.hero h1 {
  max-width: 10ch;
  margin-top: 0.7rem;
  font-size: clamp(3rem, 9vw, 5.6rem);
  line-height: 0.94;
  letter-spacing: -0.055em;
}

.hero-text {
  max-width: 38rem;
  margin-top: 1.3rem;
  font-size: 1.15rem;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.7rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 700;
}

.button-primary {
  background: var(--accent-strong);
  color: #f7faf9;
  box-shadow: 0 16px 40px rgba(19, 78, 74, 0.18);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 250, 240, 0.72);
}

.proof-points {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.proof-points li,
.panel-list li,
.link-panel a,
.diagram-node {
  border: 1px solid var(--line);
  background: rgba(255, 252, 245, 0.8);
}

.proof-points li {
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.94rem;
}

.hero-panel {
  display: flex;
}

.panel-card,
.feature-card,
.diagram-card,
.link-panel,
.section {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel-card {
  width: 100%;
  padding: 1.4rem;
  border-radius: var(--radius-lg);
}

.panel-list {
  display: grid;
  gap: 0.7rem;
  margin-top: 1rem;
}

.panel-list li {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
}

.section {
  padding: 1.7rem;
  margin-top: 1.4rem;
  border-radius: var(--radius-lg);
}

.section-heading h2 {
  margin-top: 0.4rem;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.section-lead {
  max-width: 46rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.homage-link-row {
  margin-top: 1.2rem;
}

.homage-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.8rem 1rem;
  border: 1px solid rgba(15, 118, 110, 0.22);
  border-radius: var(--radius-sm);
  background: rgba(15, 118, 110, 0.08);
  color: var(--accent-strong);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

.homage-link::after {
  content: "↗";
  font-size: 0.95em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.feature-card {
  padding: 1.3rem;
  border-radius: var(--radius-md);
}

.feature-card h3,
.stack-list h3 {
  font-size: 1.05rem;
  letter-spacing: -0.03em;
}

.feature-card p,
.stack-list p,
.open-source-copy p,
.site-footer,
.footer-links,
.site-nav {
  color: var(--muted);
}

.feature-card p,
.stack-list p {
  margin-top: 0.55rem;
}

.architecture-grid,
.open-source-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
  gap: 1rem;
  margin-top: 1.4rem;
}

.stack-list {
  display: grid;
  gap: 1rem;
  margin-top: 1.3rem;
}

.diagram-card {
  display: grid;
  align-content: center;
  gap: 1rem;
  padding: 1.3rem;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 250, 240, 0.96), rgba(245, 241, 232, 0.92));
}

.diagram-node {
  padding: 1rem;
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 700;
}

.diagram-line {
  height: 1px;
  background: var(--line);
  margin: -0.2rem 18% 0;
}

.diagram-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.link-panel {
  display: grid;
  gap: 0.8rem;
  align-content: start;
  padding: 1.2rem;
  border-radius: var(--radius-lg);
}

.link-panel a {
  display: block;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 600;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 0 0.2rem;
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 960px) {
  .hero,
  .architecture-grid,
  .open-source-grid {
    grid-template-columns: 1fr;
  }

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

  .hero h1 {
    max-width: 12ch;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(calc(100% - 1rem), var(--max-width));
    padding-top: 0.5rem;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 1.4rem;
  }

  .hero {
    padding-top: 3rem;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 16vw, 4rem);
  }

  .section,
  .panel-card,
  .diagram-card,
  .link-panel {
    padding: 1.15rem;
  }

  .feature-grid,
  .diagram-row {
    grid-template-columns: 1fr;
  }
}