.rhb-header {
    width: 100%;
    height: 60vh;
    position: relative;
    overflow: hidden;
}
.swiper-container, .swiper-wrapper, .swiper-slide {
    width: 100%;
    height: 100%;
}
.swiper-slide {
    background-size: cover;
    background-position: center;
    position: relative;
}
.rhb-caption {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    padding: 10px 20px;
    border-radius: 8px;
    max-width: 90%;
    text-align: center;
    word-break: break-word;
}
.rhb-caption-top {
    top: 20px;
}
.rhb-caption-middle {
    top: 50%;
    transform: translate(-50%, -50%);
}
.rhb-caption-bottom {
    bottom: 20px;
}
@media screen and (max-width: 768px) {
    .rhb-caption-top,
    .rhb-caption-middle {
        top: auto !important;
        bottom: 10px !important;
        transform: translateX(-50%) !important;
    }
}
.rhb-overlay {
    position: absolute;
    z-index: 2;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: white;
    background: rgba(0,0,0,0.4);
    padding: 20px;
}

.rhb-overlay a {
    color: yellow;
    text-decoration: underline; /* 任意で付け足し */
}

.rhb-overlay a:hover {
    color: #ffd700; /* 明るめの金色 */
}