:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --text: #111827;
  --muted: #4b5563;
  --line: #d1d5db;
  --accent: #0f766e;
  --accent-2: #0e7490;
  --footer-link: #0d5c56;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg);
}

@media (prefers-reduced-motion: no-preference) {
  body {
    background: radial-gradient(circle at 10% -20%, #dff4ef 0%, transparent 40%),
      radial-gradient(circle at 90% 0%, #dbeafe 0%, transparent 35%), var(--bg);
  }
}

@media (prefers-contrast: more) {
  :root {
    --bg: #ffffff;
    --surface: #ffffff;
    --text: #000000;
    --muted: #1f2937;
    --line: #6b7280;
  }
  .btn {
    border-width: 2px;
  }
  .card, .manifesto {
    border-width: 2px;
  }
}

/* Skip navigation link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 0 0 4px 4px;
  z-index: 1000;
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

/* Focus indicators — AAA compliant */
a:focus-visible,
.btn:focus-visible,
.skip-link:focus-visible {
  outline: 3px solid var(--accent-2);
  outline-offset: 2px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--accent-2);
  outline-offset: 2px;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1rem 2rem;
  align-items: center;
}

@media (prefers-reduced-motion: reduce) {
  .hero-graphic {
    transition: none;
  }
}

.kicker {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 700;
  margin: 0 0 0.75rem;
}

.platform-badge {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0.02em;
  font-size: 0.65rem;
  color: var(--muted);
  display: inline-block;
  vertical-align: middle;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.05;
  margin: 0 0 1rem;
}

.lead {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 1.4rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.btn {
  border: 1px solid var(--line);
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  background: var(--surface);
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #fff;
}

.hero-graphic {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}

.content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem 3rem;
}

.manifesto {
  background: linear-gradient(135deg, #f0fdfa, #eff6ff);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.1rem;
  margin-bottom: 1.2rem;
}

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

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

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

pre {
  background: #0b1220;
  color: #d1fae5;
  border-radius: 12px;
  padding: 1rem;
  overflow-x: auto;
}

/* Footer — all styles in CSS, no inline styles */
.site-footer {
  text-align: center;
  padding: 2rem 1rem;
  color: #6b7280;
  font-size: 0.9rem;
  border-top: 1px solid var(--line);
  margin-top: 2rem;
}

.site-footer a {
  color: var(--footer-link);
}

@media (prefers-contrast: more) {
  .site-footer a {
    color: #000000;
    text-decoration: underline;
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 2rem;
  }

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