body {
    font-family: "Microsoft YaHei",sans-serif;
    max-width:600px;
    margin:40px auto;
    padding:0 20px;
    background:#f5f7fa;
}
h1 {
    color:#222;
    border-bottom:3px solid #3498db;
    padding-bottom:10px;
    margin-bottom:20px;
}
pre {
    background:#fff;
    padding:24px;
    border-radius:10px;
    box-shadow:0 2px 12px rgba(0,0,0,0.06);
    line-height:2;
    font-size:16px;
}
a {
    color:#1677ff;
    text-decoration:none;
}
a:hover {
    text-decoration:underline;
}
hr {
    display:none;
}

/* 关键：把pre内所有链接以外的文字全部隐藏 */
pre {
    color: transparent;
}
pre a {
    color:#1677ff;
}