.billing-cart {
    position: fixed;
    left: 24px;
    bottom: 24px;
    z-index: 50;
    display: flex;
    align-items: center;
    gap: 16px;
    box-sizing: border-box;
    width: 440px;
    max-width: calc(100% - 48px);
    padding: 16px 48px 16px 20px;
    background: #eef4ff;
    border: 1px solid #c9d8fb;
    border-radius: 14px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, .14);
    font-family: inherit;
    color: #111827;
}

.billing-cart[hidden] {
    display: none;
}

.billing-cart__text {
    flex: 1 1 auto;
    min-width: 0;
}

.billing-cart__title {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.3;
}

.billing-cart__sub {
    margin-top: 2px;
    font-size: 16px;
    line-height: 1.3;
    color: #4b5563;
}

.billing-cart a.billing-cart__go,
.billing-cart a.billing-cart__go:hover,
.billing-cart a.billing-cart__go:visited {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 18px;
    border-radius: 10px;
    background: #2563eb;
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}

.billing-cart a.billing-cart__go:hover {
    background: #1d4ed8;
}

.billing-cart__close {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: #9ca3af;
    cursor: pointer;
}

.billing-cart__close:hover {
    background: #dce7fd;
    color: #374151;
}

.billing-cart a.billing-cart__go:focus-visible,
.billing-cart__close:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

@media (max-width: 860px) {
    .billing-cart {
        left: 12px;
        right: 12px;
        bottom: 16px;
        width: auto;
        max-width: none;
        padding: 14px 44px 14px 16px;
        gap: 12px;
    }

    .billing-cart--tabbar {
        bottom: 76px;
    }

    .billing-cart--chat {
        bottom: 96px;
    }

    .billing-cart--tabbar.billing-cart--chat {
        bottom: 156px;
    }
}

@media (max-width: 400px) {
    .billing-cart {
        flex-wrap: wrap;
    }

    .billing-cart a.billing-cart__go,
    .billing-cart a.billing-cart__go:hover {
        width: 100%;
    }
}