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

body {
  font-family: system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 0.5rem;
}

main {
  text-align: center;
}

h1 {
  font-size: 3.6rem;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.tagline {
  font-size: 1.5rem;
  line-height: 1.5;
  color: #666;
  margin-bottom: 2rem;
}

.btn-primary {
  display: inline-block;
  background: #0070f3;
  color: white;
  padding: 0.75rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 500;
  transition: background 0.2s;
}

.btn-primary:hover {
  background: #0060d0;
}

.tools {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid #eee;
}

.tools h2 {
  font-size: 1rem;
  color: #999;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.tool-card {
  display: block;
  padding: 1rem 1.5rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.tool-card:hover {
  border-color: #0070f3;
  box-shadow: 0 2px 8px rgba(0, 112, 243, 0.1);
}

.tool-card strong {
  display: block;
  color: #0070f3;
  margin-bottom: 0.25rem;
}

.tool-card span {
  font-size: 0.9rem;
  color: #666;
}