:root {
  --bg: #0b0f14;
  --card: #121823;
  --text: #e6edf3;
  --muted: #9aa4b2;
  --accent: #6ee7ff;
  --border: rgba(255, 255, 255, 0.08);
}

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

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(circle at top, #111827, var(--bg));
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  width: min(720px, 92%);
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  letter-spacing: 0.05em;
}

.tagline {
  color: var(--muted);
  margin-top: 0.5rem;
}

.card {
  margin-top: 2rem;
  padding: 2rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  backdrop-filter: blur(10px);
}

.card h2 {
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--muted);
  line-height: 1.6;
}

.links {
  margin-top: 1.5rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.links a {
  text-decoration: none;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  transition: 0.2s ease;
}

.links a:hover {
  background: var(--accent);
  color: #000;
}

footer {
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.card-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.mini-card {
  display: block;
  text-decoration: none;
  padding: 1.2rem;
  border-radius: 14px;
  background: linear-gradient(145deg, var(--card), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border);
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  color: var(--text);
}

.mini-card h3 {
  margin-bottom: 0.4rem;
  color: var(--accent);
  font-size: 1.1rem;
}

.mini-card p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.mini-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}