html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background-color: #000;
    color: #fff;
    font-family: 'Times New Roman', Times, serif;
    overflow: hidden;
}

.world {
    position: fixed;
    top: 0;
    left: 0;
    width: 400vw; /* 4 panels */
    height: 100vh;
    display: flex;
    transition: transform 1s ease-in-out;
}

canvas {
    width: 100vw;
    height: 100vh;
}

header {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.card {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(20, 20, 30, 0.92);
    color: #fff;
    border-radius: 18px;
    box-shadow: 0 4px 32px 0 rgba(0,0,0,0.25);
    padding: 2.2em 2.8em 2em 2.8em;
    min-width: 320px;
    max-width: 90vw;
    z-index: 20;
    text-align: center;
    font-family: 'Times New Roman', Times, serif;
    transition: box-shadow 0.2s;
}
.card h2 {
    margin: 0 0 0.5em 0;
    font-size: 2em;
    letter-spacing: 0.04em;
}
.card .bio {
    font-size: 1.1em;
    margin: 0 0 1.2em 0;
    color: #cfcfd9;
}
.y1.z1 .y3 {
    display: flex;
    flex-direction: column;
    gap: 0.7em;
}
.card .links a {
    color: #7fd7ff;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.08em;
    transition: color 0.2s;
}
.card .links a:hover {
    color: #fff;
}

@media (max-width: 700px) {
    .card {
        min-width: 0;
        width: 92vw;
        max-width: 98vw;
        padding: 1.2em 1em 1.2em 1em;
        font-size: 1em;
        top: 54%;
    }
}

@media (max-width: 700px) {
    .y1 {
        display: none;
    }
    .y1.z1 {
        display: flex !important;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 100vw;
        height: 100vh;
        min-width: 0;
        max-width: none;
        border-radius: 0;
        box-shadow: none;
        padding: 0 1em;
        z-index: 40;
        background: rgba(20,20,30,0.98);
        font-size: 1.1em;
        overflow-y: auto;
    }
    .y1.z1 .y4 {
        display: block;
    }
}