@charset "UTF-8";

.pagetop-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #11caa0;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    
    /* 通常時は透明 */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s, visibility 0.4s;
}

.pagetop-btn.show {
    opacity: 1;
    visibility: visible;
}