#hisingInstallPrompt {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 18px;
    z-index: 99999;
    display: none;
}

.hising-install-card {
    position: relative;
    max-width: 480px;
    margin: 0 auto;
    background:
        radial-gradient(circle at top left, rgba(255,193,7,.18), transparent 34%),
        linear-gradient(135deg, #050505, #111827);
    border: 1px solid rgba(255,255,255,.14);
    color: #fff;
    border-radius: 26px;
    padding: 18px;
    box-shadow: 0 28px 80px rgba(0,0,0,.38);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.hising-install-close {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 30px;
    height: 30px;
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,.12);
    color: #fff;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
}

.hising-install-top {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-right: 32px;
}

.hising-install-logo {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: rgba(255,255,255,.08);
    object-fit: contain;
    padding: 6px;
    flex-shrink: 0;
}

.hising-install-title {
    font-size: 17px;
    font-weight: 900;
    line-height: 1.2;
}

.hising-install-subtitle {
    color: #cbd5e1;
    font-size: 13px;
    margin-top: 3px;
}

.hising-install-benefits {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin: 16px 0;
}

.hising-install-benefit {
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.10);
    border-radius: 14px;
    padding: 9px 10px;
    font-size: 12px;
    color: #e5e7eb;
}

.hising-install-actions {
    display: flex;
    gap: 10px;
}

.hising-install-btn {
    border: 0;
    min-height: 44px;
    border-radius: 999px;
    padding: 0 18px;
    font-weight: 900;
    cursor: pointer;
}

.hising-install-now {
    flex: 1;
    background: #ffc107;
    color: #000;
}

.hising-install-later {
    background: rgba(255,255,255,.10);
    color: #fff;
}

.hising-install-guide {
    display: none;
    margin-top: 14px;
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.11);
    border-radius: 18px;
    padding: 13px;
    color: #e5e7eb;
    font-size: 13px;
    line-height: 1.55;
}

.hising-install-guide strong {
    color: #ffc107;
}

@media (max-width: 420px) {
    .hising-install-benefits {
        grid-template-columns: 1fr;
    }

    .hising-install-actions {
        flex-direction: column;
    }
}