:root {
  --bg: #0b1320;
  --surface: #111b2d;
  --text: #edf2f7;
  --muted: #a0aec0;
  --accent: #4fd1c5;
  --accent-2: #63b3ed;
  --border: #2d3748;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  background: linear-gradient(160deg, var(--bg), #152238);
  color: var(--text);
  min-height: 100vh;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1rem;
}

header {
  border-bottom: 1px solid var(--border);
  background: rgba(11, 19, 32, 0.88);
  backdrop-filter: blur(6px);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

nav .brand {
  font-weight: 700;
  letter-spacing: 0.3px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

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

a:hover {
  color: var(--accent);
}

.hero {
  padding: 4rem 0 2rem;
}

h1, h2, h3 {
  line-height: 1.2;
}

p {
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
}

.button {
  display: inline-block;
  padding: 0.6rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--accent);
  color: var(--text);
  margin-right: 0.5rem;
  margin-top: 0.5rem;
}

.button.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #02111f;
  border: none;
  font-weight: 600;
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.table th,
.table td {
  border: 1px solid var(--border);
  padding: 0.75rem;
  text-align: left;
}

.table th {
  background: #0f1a2c;
}

footer {
  margin-top: 3rem;
  border-top: 1px solid var(--border);
  padding: 1rem 0 2rem;
  color: var(--muted);
}