* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f7fb;
  color: #1f2937;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

.site-header {
  background: #0f172a;
  color: #fff;
  padding: 14px 0;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.brand a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  font-size: 22px;
}

.nav a {
  color: #e5e7eb;
  text-decoration: none;
  margin-left: 14px;
  font-size: 14px;
}

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

.hero {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 24px;
  margin-top: 24px;
}

.hero h1 {
  margin-top: 0;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 16px;
}

.site-footer {
  margin-top: 30px;
  padding: 18px 0;
  border-top: 1px solid #e5e7eb;
  background: #fff;
  color: #6b7280;
  font-size: 14px;
}