/* TOPボタン専用CSS */
#back-to-top {
    background: #00bfff !important;
    color: white !important;
    border: 2px solid #00bfff !important;
    box-shadow: 0 4px 12px rgba(0, 191, 255, 0.3) !important;
}

#back-to-top:hover {
    background: #0099cc !important;
    border-color: #0099cc !important;
    box-shadow: 0 6px 16px rgba(0, 191, 255, 0.5) !important;
}