:root {
  --bg: #0d172a;
  --text: #f0f4ff;
  --text-secondary: #a8b5d1;
  --text-tertiary: #6a7a99;
  --accent-start: #5dd5c4;
  --accent-end: #8b7bff;
  --border: rgba(255, 255, 255, 0.14);
  --card: rgba(255, 255, 255, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(93, 213, 196, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(139, 123, 255, 0.14), transparent),
    var(--bg);
  line-height: 1.6;
}

a {
  color: var(--accent-start);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

header {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
}

nav a {
  color: var(--text-secondary);
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem 1.5rem 4rem;
}

.hero {
  padding: 3rem 0 2rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.tagline {
  margin: 0 0 1.5rem;
  font-size: 1.15rem;
  color: var(--text-secondary);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  margin-top: 1.5rem;
}

.prose h2 {
  margin-top: 2rem;
  font-size: 1.25rem;
}

.prose p,
.prose li {
  color: var(--text-secondary);
}

.prose ul {
  padding-left: 1.25rem;
}

footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  border-top: 1px solid var(--border);
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

footer nav {
  margin-bottom: 0.75rem;
}