body {
  font-family: 'Helvetica', sans-serif;
  background: #fff8f0;
  margin: 0;
  padding: 0;
  color: #333;
}

.container {
  max-width: 600px;
  margin: auto;
  padding: 20px;
  background: #ffffff;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  border-radius: 8px;
}

h1 {
  font-size: 1.8em;
  color: #228B22; /* クリスマスグリーン */
  text-align: center;
  margin-bottom: 5px;
}

.subtitle {
  font-size: 1em;
  color: #b22222; /* クリスマスレッド */
}

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

label, legend {
  font-weight: bold;
  font-size: 15px;
}

input[type="text"],
input[type="tel"],
input[type="url"],
input[type="email"],
select,
textarea {
  padding: 10px;
  font-size: 16px;
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #ccc;
  border-radius: 4px;
}

textarea {
  resize: vertical;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

input[type="checkbox"] {
  transform: scale(1.2);
  margin-right: 1px;
  vertical-align: middle;
}

.consent {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

button {
  background-color: #228B22;
  color: white;
  padding: 12px;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
  font-weight: bold;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #196619;
}