body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #f7f7f5;
  color: #111;
}

.container {
  max-width: 640px;
  margin: auto;
  padding: 48px 20px;
}

h1 {
  font-size: 28px;
  line-height: 1.4;
  margin-bottom: 16px;
}

.sub {
  font-size: 16px;
  color: #444;
  margin-bottom: 40px;
}

.form-box {
  background: #fff;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.05);
}

.form-box h2 {
  margin-top: 0;
  margin-bottom: 16px;
}

label {
  display: block;
  margin-bottom: 16px;
  font-size: 14px;
}

input, textarea {
  width: 100%;
  padding: 10px;
  margin-top: 6px;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 14px;
}

button {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: none;
  background: #111;
  color: #fff;
  font-size: 15px;
  cursor: pointer;
}

button:hover {
  background: #000;
}

footer {
  margin-top: 32px;
  font-size: 13px;
  color: #666;
}