#pwa-install-button {
    position: fixed;
    right: 16px;
    bottom: 16px;
    z-index: 9999;
    padding: 10px 14px;
    border-radius: 999px;
    border: 0;
    background: #0d4b8f;
    color: #fff;
    font-weight: 600;
    box-shadow: 0 4px 18px rgba(0,0,0,.18);
    cursor: pointer;
}

#pwa-install-button:hover { filter: brightness(1.05); }

#pwa-ios-tip {
    position: fixed;
    left: 50%;
    bottom: 16px;
    transform: translateX(-50%);
    z-index: 9999;
    max-width: 90vw;
    background: #111;
    color: #fff;
    padding: 12px 14px;
    border-radius: 12px;
    box-shadow: 0 4px 18px rgba(0,0,0,.18);
    font-size: 14px;
    line-height: 1.35;
}
#pwa-ios-tip button {
    margin-left: 10px;
    border: 0;
    background: transparent;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
}