html {
        background-color: #ffffff;
        scrollbar-width: none;
        transition: all 0.3s;
    }

    .menu-wrapper {
        position: relative;
        display: block;
        margin-left: auto;
        margin-right: 1rem;
        width: 4.5rem;
        text-align: center;
    }

    .submenu {
        position: absolute;
        top: 100%;
        left: 50%;
        transform: translateX(-50%);
        background: #ffffffad;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        border-radius: 8px;
        display: none;
        z-index: 1000;
        padding: 2rem;
        margin-top: 10px;
        width: 15vw;
        animation: submenu-slide-down 0.3s ease-out;
    }

    .menu-icon {
        width: 30px;
        height: 30px;
    }

    .menu-button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: transparent;
        border: none;
        cursor: pointer;
    }

    .submenu-triangle {
        position: absolute;
        top: -10px;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 0;
        border-left: 10px solid transparent;
        border-right: 10px solid transparent;
        border-bottom: 10px solid #ffffffad;
    }

    .submenu ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .submenu li {
        margin: 0 3%;
        text-align: left;
        font-size: 1rem;
        font-weight: 600;
        line-height: 3rem;
    }

    .submenu a {
        text-decoration: none;
        color: #333;
        display: block;
    }

    .menu-wrapper:hover .submenu {
        display: block;
    }

    @keyframes submenu-slide-down {
        from {
            opacity: 0;
            transform: translateX(-50%) translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }
    }

    @media screen and (max-width: 768px) {
        .menu-icon {
            display: none;
        }
    }
    .s-section1__mainv {
    position: relative;
    display: inline-block; /* 親要素のサイズを維持 */
}

.overlay-image {
    position: absolute;
    top: 27%;
    left: 31%;
    transform: translate(-50%, -50%);
    width: 100%;
    max-width: 57vw;
    height: auto;
    pointer-events: none;
}
.overlay-image2 {
    position: absolute;
    top: 27%;
    left: 70%;
    transform: translate(-50%, -50%);
    width: 100%;
    max-width: 13vw;
    height: auto;
    pointer-events: none;
}
img.pclogo {
    width: 15vw;
}