/* WhatsApp 一键咨询悬浮按钮（全站右下角） */
.whatsapp-float {
    position: fixed; right: 20px; bottom: 20px; z-index: 998;
    width: 56px; height: 56px; border-radius: 50%;
    background: #25d366;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .22);
    transition: transform .25s, background .25s;
}
.whatsapp-float svg { width: 32px; height: 32px; display: block; fill: #fff; }
.whatsapp-float:hover { background: #1eb85a; transform: scale(1.08); }

/* 移动端：抬高到底部标签栏（约52px）上方 */
@media screen and (max-width: 768px) {
    .whatsapp-float { right: 14px; bottom: 66px; width: 48px; height: 48px; }
    .whatsapp-float svg { width: 27px; height: 27px; }
}