:root {
    color-scheme: dark;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    overflow: hidden;
    color: #f5f7fb;
    background:
        radial-gradient(circle at 15% 20%, rgba(78, 118, 255, .28), transparent 34rem),
        radial-gradient(circle at 85% 75%, rgba(125, 76, 255, .22), transparent 30rem),
        #080b12;
}

main {
    width: min(880px, calc(100% - 40px));
    padding: clamp(40px, 8vw, 88px);
    text-align: center;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 30px;
    background: rgba(255,255,255,.055);
    box-shadow: 0 32px 90px rgba(0,0,0,.38);
    backdrop-filter: blur(16px);
}

.mark {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 42px;
    color: #aeb9ce;
    font-size: 14px;
    letter-spacing: .18em;
    text-transform: uppercase;
}

.dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #7291ff;
    box-shadow: 0 0 20px #7291ff;
}

h1 {
    margin: 0;
    font-size: clamp(48px, 10vw, 104px);
    line-height: .96;
    letter-spacing: -.065em;
}

p {
    margin: 30px auto 0;
    max-width: 560px;
    color: #aeb9ce;
    font-size: clamp(17px, 2vw, 21px);
    line-height: 1.55;
}

footer {
    margin-top: 48px;
    color: #657088;
    font-size: 13px;
}