.header-pc.scrolled, .header-mobile.scrolled {
    background-color: #fff;
}

.slideout-menu {
    background-color: rgba(255, 0, 0, 0.9);
}

.header-pc {
    background-color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    color: #fff;
    height: 70px;
    z-index: 2; /* Added */
    position: fixed;
    left: 0;
    right: 0;
}

img { height: inherit; }

.header-pc .logo {
    writing-mode: vertical-rl;
    text-orientation: upright;
    font-size: 24px;
}

.header-pc .menu a {
    text-transform: uppercase;
    font-weight: bold;
    color: #000;
    margin: 0 10px;
    text-decoration: none;
    transition: color 0.3s;
}

.header-pc .menu a:hover {
    color: #ff6347;
}

.header-mobile {
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    color: #fff;
    height: 55px;
    z-index: 2; /* Added */
    position: fixed;
    left: 0;
    right: 0;
}

.header-mobile .hamburger-menu {
    cursor: pointer;
    color: #000;
    font-size: 24px;
    transition: transform 0.3s;
}

.slideout-menu {
    display: none;
    flex-direction: column;
    background-color: #fff;
    position: fixed;
    top: 75px;
    width: calc(100%);
    height: calc(100% - 75px);
    transition: transform 0.3s ease;
    transform: translatex(100%);
    z-index: 1; /* Added */
}

.slideout-menu.show {
    transform: translatex(0);
}

.slideout-menu a {
    text-transform: uppercase;
    font-weight: bold;
    color: #000000;
    margin: 10px;
    text-align: center;
    text-decoration: none;
    transition: color 0.3s;
}

.slideout-menu a:hover {
    color: #ff6347;
}

.content {
    padding: 20px;
}

@media screen and (max-width: 1250px) {
    .header-pc {display: none;}

    .header-mobile {display: flex;}

    .slideout-menu {display: flex;}
}

.rotate {
    transform: rotate(90deg);
}