body{
    margin:0;
    background:#7ed3f4;
    font-family:Arial;
}

/* 主區域 */
main{
    min-height:100vh;

    display:flex;
    justify-content:center;
    align-items:center;
    gap:100px;

    padding:30px;
    box-sizing:border-box;
}

/* 每個區塊 */
.scheme{
    width:40vw;
    max-width:420px;
    min-width:260px;

    aspect-ratio:1/1;

    display:flex;
    justify-content:center;
    align-items:center;
}

/* 連結 */
.scheme a{
    width:100%;
    height:100%;

    display:flex;
    justify-content:center;
    align-items:center;
}

/* 圖片 */
.scheme img{
    width:100%;
    height:auto;
    object-fit:contain;

    transition:0.3s;
}

/* 滑鼠移過去微放大 */
.scheme img:hover{
    transform:scale(1.05);
}


/* =========================
   手機版 RWD
========================= */
@media (max-width:768px){

    main{
        flex-direction:column;
        gap:10px;

        padding:10px;
    }

    .scheme{
        width:65vw;
        max-width:300px;
        min-width:180px;
    }

    .scheme img{
        width:100%;
    }
}