:root {
    color-scheme: dark;
    --bg-1: #07070d;
    --bg-2: #120d20;
    --bg-3: #1b1230;
    --violet: #7c3aed;
    --violet-bright: #a78bfa;
    --violet-soft: #c4b5fd;
    --rose: #f0abfc;
}

* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background:
        radial-gradient(circle at 50% 34%, rgba(124, 58, 237, 0.34) 0%, transparent 22%),
        radial-gradient(circle at 50% 50%, rgba(167, 139, 250, 0.18) 0%, transparent 30%),
        radial-gradient(circle at 50% 68%, rgba(240, 171, 252, 0.08) 0%, transparent 24%),
        linear-gradient(180deg, var(--bg-3) 0%, var(--bg-2) 45%, var(--bg-1) 100%);
    font-family: "Nunito", Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
}

.stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    width: 100%;
    text-align: center;
}

.mark {
    width: min(40vw, 320px);
    max-width: 320px;
    min-width: 180px;
    object-fit: contain;
    filter:
        drop-shadow(0 0 18px rgba(124, 58, 237, 0.28))
        drop-shadow(0 0 44px rgba(124, 58, 237, 0.22));
    user-select: none;
    -webkit-user-drag: none;
}

.title {
    margin: 0;
    text-align: center;
    font-family: "Nunito", "Avenir Next", "Segoe UI", sans-serif;
    font-size: clamp(2.2rem, 4.3vw, 4.4rem);
    font-weight: 800;
    line-height: 1;
    white-space: nowrap;
    color: #d8b4fe;
    text-shadow: 0 0 28px rgba(167, 139, 250, 0.18);
}

.title-ai {
    color: #67e8f9;
    font-weight: 800;
    text-shadow: 0 0 24px rgba(103, 232, 249, 0.4);
}

@media (max-width: 640px) {
    .shell {
        padding: 0 18px;
    }

    .stack {
        gap: 14px;
    }

    .mark {
        width: min(58vw, 250px);
    }

    .title {
        font-size: clamp(2rem, 10vw, 3rem);
    }
}