/* 共通スタイル */
body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f2f5;
}
header {
    background-color: #222;
    color: #fff;
    padding: 1.2rem;
    text-align: center;
    font-size: 1.6rem;
    font-weight: bold;
    letter-spacing: 0.5px;
}
main {
    max-width: 600px;
    margin: 2rem auto;
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
h2 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    text-align: center;
}
p.intro {
    font-size: 0.95rem;
    text-align: center;
    color: #555;
    margin-bottom: 1.5rem;
}
label {
    display: block;
    margin-top: 1.2rem;
}
input, textarea, select {
    width: 100%;
    padding: 0.6rem;
    margin-top: 0.4rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
}
.checkbox-group {
    margin-top: 0.5rem;
}
.checkbox-group label {
    display: flex;
    align-items: center;
    margin-bottom: 0.3rem;
}
.checkbox-group input {
    margin-right: 0.5rem;
}
.button-wrapper {
    text-align: center;
}
button {
    margin-top: 2rem;
    padding: 0.8rem 2.5rem;
    background-color: #007bff;
    border: none;
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}
button:hover {
    background-color: #0056b3;
}