body {
    margin: 0;
    font-family: "Yu Gothic", "Hiragino Sans", sans-serif;
    color: #333;
    background: #ffffff;
    line-height: 1.8;
}

/* ヘッダー */
.header {
    background: #003366;
    color: #fff;
    padding: 15px 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    margin: 0;
    font-size: 26px;
}

.nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.nav li {
    margin-left: 20px;
}

.nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

/* ページタイトル */
.page-title {
    background: #e8f0f8;
    padding: 40px 0;
    border-bottom: 1px solid #d0d8e0;
}

.page-title h2 {
    margin: 0;
    font-size: 28px;
    color: #003366;
}

.page-title p {
    margin-top: 10px;
    color: #555;
}

/* 本文 */
.container {
    width: 90%;
    max-width: 900px;
    margin: auto;
}

.content {
    padding: 40px 0;
}

.content h3 {
    margin-top: 40px;
    color: #003366;
    border-left: 5px solid #003366;
    padding-left: 10px;
}

.content p {
    margin-top: 10px;
    white-space: pre-line;
}

/* フッター */
.footer {
    background: #003366;
    color: #fff;
    text-align: center;
    padding: 15px 0;
    margin-top: 40px;
}

/* お問い合わせフォーム */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.contact-form label {
    font-weight: bold;
    color: #003366;
}

.contact-form input,
.contact-form textarea {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
}

.btn-submit {
    background: #003366;
    color: #fff;
    padding: 12px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
}

.btn-submit:hover {
    background: #002244;
}