html – transparent linear gradient looking strange in safari

        :root {
            --main-color:#05e2ff
        }

        body {
            background-color: var(--main-color);
        }

        .line {
            position:relative;
            margin:0 auto;
            height:50vh;
            width:20px;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 100 150' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='50' cy='50' r='50' fill='%2300B4D0'/%3E%3C/svg%3E%0A");
        }

        .line::after {
            content:'';
            display:block;
            position:absolute;
            width:100%;
            height:50%;
            bottom:0;
            left:0;
            background:linear-gradient(to bottom, transparent, var(--main-color));
        }
    <div class="line">

    </div>