:root {
  --bg: #0a0a0c;
  --fg: #f1f1f3;
  --muted: #888;

  --accent: #4cc9f0;
  --accent2: #72efdd;
  --purple: #7209b7;

  --radius: 8px;
  --glass: rgba(20, 20, 25, 0.45);
}

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

body {
  font-family: Inter, sans-serif;
  background: radial-gradient(
      circle at 20% 10%,
      rgba(76, 201, 240, 0.06),
      transparent 60%
    ),
    #0a0a0c;
  color: var(--fg);
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

.section-island {
  padding: 3.6rem;
  border-radius: var(--radius);
  background: rgba(20, 20, 25, 0.45);
  backdrop-filter: blur(12px) saturate(130%);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.28);
  max-width: 1100px;
  margin: 0 auto;
}

.btn {
  text-decoration: none;
  padding: 1.2rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1.2rem;
  transition: 0.2s;
}

.btn-accent {
  background: var(--accent);
  color: #000;
}

.btn-accent:hover {
  filter: brightness(1.1);
}

.btn-ghost {
  border: 1px solid var(--fg);
  color: var(--fg);
}

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

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
}

.btn-card {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.8rem 1.6rem;
  background: var(--accent);
  color: #000;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
}

.tertiary-heading {
  font-size: 1.2rem;
}