* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f5f5f5;
}
.container { max-width: 960px; margin: 0 auto; padding: 0 20px; }
header {
  background: #1a1a2e;
  color: #fff;
  padding: 20px 0;
}
header .container { display: flex; justify-content: space-between; align-items: center; }
header h1 { font-size: 1.5rem; }
nav a { color: #fff; text-decoration: none; margin-left: 20px; opacity: 0.8; }
nav a:hover { opacity: 1; }
main { padding: 40px 0; min-height: 60vh; }
.hero {
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  border-radius: 12px;
  margin-bottom: 40px;
}
.hero h2 { font-size: 2.5rem; margin-bottom: 16px; }
.hero p { font-size: 1.2rem; margin-bottom: 24px; opacity: 0.95; }
.btn {
  display: inline-block;
  padding: 12px 32px;
  background: #fff;
  color: #764ba2;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; }
.feature {
  background: #fff;
  padding: 32px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.feature h3 { color: #764ba2; margin-bottom: 12px; }
form {
  max-width: 500px;
  margin: 0 auto;
  background: #fff;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
form h2 { text-align: center; margin-bottom: 24px; color: #1a1a2e; }
label { display: block; margin-bottom: 16px; font-weight: 500; }
input, textarea {
  width: 100%;
  padding: 12px;
  margin-top: 6px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
}
input:focus, textarea:focus { outline: none; border-color: #764ba2; }
form .btn { width: 100%; margin-top: 8px; }
#result { margin-top: 16px; text-align: center; font-weight: 500; }
#result.success { color: #16a34a; }
#result.error { color: #dc2626; }
footer {
  text-align: center;
  padding: 24px;
  color: #666;
  background: #fff;
  border-top: 1px solid #eee;
}