* {
  box-sizing: border-box;
}

:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel-light: #1f2937;
  --text: #e5e7eb;
  --muted: #cbd5e1;
  --accent: #38bdf8;
  --accent-dark: #0ea5e9;
  --border: rgba(255, 255, 255, 0.08);
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  background: linear-gradient(180deg, #0f172a 0%, #111827 100%);
  color: var(--text);
}

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  padding: 5rem 0 4rem;
  text-align: center;
}

.badge {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--accent);
  background: rgba(56, 189, 248, 0.08);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.15;
  margin-bottom: 1rem;
}

.subtitle {
  max-width: 760px;
  margin: 0 auto 1.5rem;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.card {
  background: rgba(31, 41, 55, 0.7);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.5rem;
  backdrop-filter: blur(4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
  margin-bottom: 1rem;
}

.button {
  display: inline-block;
  border: none;
  border-radius: 12px;
  padding: 0.9rem 1.2rem;
  background: var(--accent);
  color: #06202b;
  font-weight: bold;
  text-decoration: none;
  cursor: pointer;
}

.button:hover {
  background: var(--accent-dark);
}

.button.secondary {
  color: #ffffff;
  background: #2563eb;
}

.footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
  text-align: center;
}