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

.app {
  max-width: 1100px;
  margin: auto;
}

.hero {
  padding: 100px 20px;
  text-align: center;
}

.hero h1 {
  font-size: 52px;
}

.hero p {
  font-size: 20px;
  color: #666;
}

.cta {
  display: inline-block;
  margin-top: 25px;
  padding: 14px 28px;
  background: #4285f4;
  color: white;
  border-radius: 10px;
  text-decoration: none;
}

.features {
  display: flex;
  gap: 20px;
  padding: 40px 20px;
}

.card {
  flex: 1;
  background: white;
  padding: 25px;
  border-radius: 14px;
}

.login {
  padding: 50px 20px;
}

pre {
  background: #111;
  color: white;
  padding: 20px;
  border-radius: 12px;
  overflow: auto;
}

#googleLoginBtn {
  margin-top: 30px;
  min-height: 48px;
}