main {
    max-width: 960px;
    margin: 2rem auto;
}

/* PC版メニュー */
.nav-desktop {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 2rem;
    flex-grow: 1;
    justify-content: flex-start;
    margin-left: 2rem;
}

.nav-desktop .nav-item a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 1rem;
    display: block;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.nav-desktop .nav-item a:hover {
    color: #007bff;
}

/* スマホ版メニュー（デフォルトは非表示） */
.nav-mobile {
    display: none;
}