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

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", "Helvetica Neue", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 10% -20%, #dff4ef 0%, transparent 40%),
    radial-gradient(circle at 90% 0%, #dbeafe 0%, transparent 35%), var(--bg);
}

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

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

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;
}

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

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