body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
}
main {
    flex: 1;
}
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: #fff;
}
header .logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
header .logo img {
    height: 50px;
}
header .logo span {
    font-size: 24px;
    font-weight: bold;
    color: #000;
}
nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 15px;
}
nav ul li a {
    text-decoration: none;
    color: #000;
    font-size: 16px;
}
#member-info {
    text-align: center;
    padding: 20px;
}
#member-info h1 {
    font-size: 36px;
    margin-bottom: 20px;
}
#member-info p {
    font-size: 18px;
    line-height: 1.5;
}
#member-info a {
    color: #007bff;
    text-decoration: none;
}
#member-info a:hover {
    text-decoration: underline;
}
footer {
    text-align: center;
    padding: 10px 0;
    background-color: #000080;
    color: #fff;
    margin-top: auto;
}
/* クッキー承諾画面のスタイル */
#cookie-banner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    max-width: 500px;
    background-color: #fff9c4;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    z-index: 1000;
}
#cookie-banner p {
    margin: 0 0 10px;
    font-size: 18px;
    line-height: 1.5;
}
#cookie-banner button {
    margin: 0 10px;
    padding: 10px 20px;
    font-size: 16px;
    color: #fff;
    background-color: #007bff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
#cookie-banner button:hover {
    background-color: #0056b3;
}

#security-badge {
    text-align: center;
    margin-top: 40px;
}

#security-badge img {
    display: block;
    margin: 0 auto;
}