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

body {
  font-family: Arial, sans-serif;
  background: #0f0f0f;
  color: #fff;
  line-height: 1.6;
}

header {
  background: #121212;
  padding: 1rem 0;
}

.nav {
  max-width: 1200px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1rem;
}

.nav a {
  color: #ccc;
  margin-left: 1rem;
  text-decoration: none;
}

.nav a:hover {
  color: #fff;
}

.hero {
  text-align: center;
  padding: 3rem 1rem;
  background: linear-gradient(to right, #052669, #5483d3);
}

.hero h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.hero button {
  background: #c1e8ff;
  color: #021024;
  padding: 0.75rem 2rem;
  border: none;
  font-weight: bold;
  cursor: pointer;
  border-radius: 10px;
}

.market {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 1rem;
}

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

.market th, .market td {
  border: 1px solid #333;
  padding: 0.75rem;
  text-align: center;
}

.up {
  color: #4caf50;
}

.down {
  color: #f44336;
}

footer {
  text-align: center;
  padding: 1rem;
  background: #121212;
  margin-top: 2rem;
}