body {
    margin: 0;
    font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
    background: #10131a;
    color: #f1f5fa;
}
header {
    text-align: center;
    padding: 3rem 1rem 1.5rem 1rem;
    background: transparent;
}

h1.bubbly {
    font-size: 3.5rem;
    margin: 0 0 0.7rem 0;
    letter-spacing: 0.22em;
    font-weight: 900;
    color: #fff;
    /* text-transform: uppercase; */
    font-family: 'Baloo 2', 'Inter', 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(90deg, #00e6ff 10%, #8cf6ff 40%, #e1c2fd 70%, #ffb6e6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 4px 24px #00e6ff66) drop-shadow(0 1px 0 #fff6);
    border-radius: 2rem;
    transition: filter 0.2s;
}
h1.bubbly:hover {
    filter: drop-shadow(0 6px 36px #00e6ff99) drop-shadow(0 2px 0 #fff9);
}
.tagline {
    font-size: 1.3rem;
    color: #b6eaff;
    margin-bottom: 1.5rem;
    font-weight: 500;
}
main {
    max-width: 500px;
    margin: 2.5rem auto 0 auto;
    background: none;
    border-radius: 0;
    box-shadow: none;
    padding: 0 1.5rem;
}
.tagline {
    font-size: 1.3rem;
    color: #b6eaff;
    margin-bottom: 1.5rem;
    font-weight: 500;
}
main {
    max-width: 500px;
    margin: 2.5rem auto 0 auto;
    background: none;
    border-radius: 0;
    box-shadow: none;
    padding: 0 1.5rem;
}
footer {
    text-align: center;
    font-size: 1rem;
    color: #fff;
    padding: 2.5rem 0 1rem 0;
    margin-top: auto;
}
@media (max-width: 600px) {
    main {
        padding: 0 0.5rem;
    }
    h1.bubbly {
        font-size: 2.2rem;
    }
}