.pwa-install-btn {
        position: fixed;
        right: 12px;
        bottom: 154px;
        z-index: 320;
        border: 0;
        border-radius: 999px;
        background: linear-gradient(90deg, #f277a2, #d9467b);
        color: #fff;
        font-family: 'Cairo', sans-serif;
        font-size: 12px;
        font-weight: 800;
        line-height: 1;
        padding: 10px 14px;
        box-shadow: 0 10px 24px rgba(185, 74, 112, 0.24);
        display: none;
    }

    .pwa-install-btn.show {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .pwa-install-sheet[hidden] {
        display: none !important;
    }

    .pwa-install-sheet {
        position: fixed;
        inset: 0;
        z-index: 340;
        display: flex;
        align-items: flex-end;
        justify-content: center;
        padding: 16px;
        background: rgba(31, 31, 31, 0.42);
        opacity: 0;
        transition: opacity 0.18s ease;
    }

    .pwa-install-sheet.show {
        opacity: 1;
    }

    .pwa-install-card {
        position: relative;
        width: min(420px, 100%);
        display: grid;
        gap: 12px;
        padding: 22px 18px 18px;
        border-radius: 26px;
        background: #fff;
        color: #1f1f1f;
        border: 1px solid #f8dbe6;
        box-shadow: 0 22px 54px rgba(31, 31, 31, 0.24);
        transform: translateY(18px);
        transition: transform 0.18s ease;
    }

    .pwa-install-sheet.show .pwa-install-card {
        transform: translateY(0);
    }

    .pwa-install-close {
        position: absolute;
        top: 10px;
        inset-inline-end: 12px;
        width: 36px;
        height: 36px;
        border: 0;
        border-radius: 999px;
        background: #fff0f5;
        color: #d9467b;
        font-size: 24px;
        line-height: 1;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .pwa-install-mark {
        width: 52px;
        height: 52px;
        border-radius: 18px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, #f277a2, #d9467b);
        color: #fff;
    }

    .pwa-install-mark svg {
        width: 30px;
        height: 30px;
        stroke: currentColor;
        fill: none;
        stroke-width: 2.2;
        stroke-linecap: round;
        stroke-linejoin: round;
    }

    .pwa-install-card h2 {
        margin: 0;
        padding-inline-end: 34px;
        font-size: 1.25rem;
        line-height: 1.15;
        font-weight: 900;
    }

    .pwa-install-card p {
        margin: 0;
        color: #8f6f7b;
        font-size: 0.95rem;
        line-height: 1.5;
        font-weight: 600;
    }

    .pwa-install-steps {
        margin: 0;
        padding-inline-start: 20px;
        color: #1f1f1f;
        display: grid;
        gap: 6px;
        font-size: 0.95rem;
        line-height: 1.45;
        font-weight: 700;
    }

    .pwa-install-actions {
        display: grid;
        grid-template-columns: 1fr auto;
        gap: 10px;
        align-items: center;
    }

    .pwa-install-primary,
    .pwa-install-secondary {
        min-height: 50px;
        border-radius: 999px;
        padding: 0 18px;
        font-size: 0.95rem;
        font-weight: 800;
    }

    .pwa-install-primary {
        border: 0;
        background: linear-gradient(90deg, #f277a2, #d9467b);
        color: #fff;
        box-shadow: 0 10px 24px rgba(185, 74, 112, 0.24);
    }

    .pwa-install-secondary {
        border: 1px solid #f8dbe6;
        background: #fff7fa;
        color: #8f6f7b;
    }

    @media (min-width: 760px) {
        .pwa-install-sheet {
            align-items: center;
        }
    }