* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", Arial, sans-serif;
    background:
        radial-gradient(circle at 50% -20%, rgba(255,255,255,.18), transparent 34%),
        linear-gradient(180deg, #f7f7f8 0%, #e9e9eb 48%, #ffffff 100%);
    color: #111111;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    overflow: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 50% 50%, rgba(255,255,255,.9), transparent 24%),
        linear-gradient(120deg, transparent 0%, rgba(0,0,0,.04) 50%, transparent 100%);
    opacity: .8;
    pointer-events: none;
}

body::after {
    content: "";
    position: fixed;
    width: 720px;
    height: 720px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,.055);
    box-shadow:
        inset 0 0 90px rgba(255,255,255,.85),
        0 40px 120px rgba(0,0,0,.08);
    pointer-events: none;
}