.article-archive-page {
    padding: 0 0 80px;
}
.head-cover {
    position: relative;
    padding: 120px 0 0;
    background: var(--main-color-yellow);
    z-index: 100;
}
/* --- アーカイブヘッダー（たまご型背景） --- */
.archive-header {
    position: relative;
    margin: 0 0px;
    text-align: center;
    overflow: hidden;
    z-index: 120;
}
.category-title-wrap {
    padding: 0px;
    background: var(--main-color-yellow);
}
.category-title-bg {
    position: relative;
    display: inline-block;
    padding: 40px 0px;
    z-index: 50;
}
.category-title-bg::before {
    position: absolute;
    content: "";
    top: 10px;
    left: -20px;
    width: 50px;
    height: 100px;
    border-radius: 50%;
    background: var(--main-color-white);
    z-index: 0;
    transform: rotate(50deg);
}
.category-title-bg .main-title {
    position: relative;
    font-size: 2.8rem;
    letter-spacing: 0.1em;
    z-index: 10;
    color: var(--text-color-black);
}

.category-title-bg .sub-title {
    position: relative;
    font-size: 1.4rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-color-beige);
    z-index: 10;
}

.message-line {
    display: block;
    width: 100%;
    height: clamp(40px, 12vw, 0px);
}


/* レスポンシブ  */
@media all and (max-width: 767px) {
    .category-title-bg .main-title {
        font-size: 2.4rem;
    }
    .category-title-bg .sub-title {
        font-size: 1.3rem;
    }
}

/* レスポンシブ */
@media all and (max-width: 640px) {
    .category-title-wrap {
        padding: 40px 0 0;
    }
    .head-cover {
        padding: 80px 0 0;
    }
    .archive-header {
        margin: 0px 0px;
    }
    .category-title-bg {
        padding: 0px 0px;
    }
    .category-title-bg::before {
        top: -40px;
    }
    .category-title-bg .main-title {
        font-size: 2rem;
    }
    .category-title-bg .sub-title {
        font-size: 1.2rem;
    }

}