:root {
  --color-bg: #0a0a0f;
  --color-surface: #12121a;
  --color-text: #e4e4ea;
  --color-text-muted: #8888a0;
  --color-accent: #4f8cff;
  --color-accent-glow: rgba(79, 140, 255, 0.15);
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --max-width: 720px;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-stack);
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  padding: 2rem;
  text-align: center;
}

.hero {
  margin-bottom: 3rem;
}

.brand {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-accent);
  text-shadow: 0 0 40px var(--color-accent-glow);
  margin-bottom: 0.75rem;
}

.tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-muted);
  font-weight: 400;
}

.description {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 2rem;
}

footer {
  margin-top: 4rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

@media (max-width: 480px) {
  .container {
    padding: 1.5rem;
  }

  .hero {
    margin-bottom: 2rem;
  }

  footer {
    margin-top: 3rem;
  }
}