*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Segoe UI',sans-serif;
}

body{
    min-height:100vh;
    background:linear-gradient(135deg,#4facfe,#00f2fe);
    display:flex;
    justify-content:center;
    align-items:center;
    flex-direction:column;
    padding:30px;
}

/* Tiêu đề */
h1{
    color:white;
    font-size:42px;
    margin-bottom:30px;
    letter-spacing:2px;
    text-shadow:0 5px 15px rgba(0,0,0,.3);
}

/* Khung chính */
ol{
    width:420px;
    list-style:none;

    background:rgba(255,255,255,.18);
    backdrop-filter:blur(12px);

    border:1px solid rgba(255,255,255,.3);

    border-radius:20px;

    padding:25px;

    box-shadow:0 15px 40px rgba(0,0,0,.25);
}

/* Mỗi dòng */
li{
    margin:18px 0;
}

/* Link */
li a{
    display:block;

    padding:15px 20px;

    text-decoration:none;

    color:white;

    font-size:18px;

    font-weight:600;

    border-radius:15px;

    background:rgba(255,255,255,.12);

    transition:.35s;
}

/* Hover */
li a:hover{

    transform:translateX(12px) scale(1.04);

    background:white;

    color:#2196F3;

    box-shadow:0 10px 25px rgba(0,0,0,.25);

}