:root{color-scheme:light;font-family:"Microsoft YaHei","Segoe UI",sans-serif;color:#111;background:#fff}
*{box-sizing:border-box}
body{margin:0;background:#fff}
.tutorial-group{max-width:760px;margin:0 auto;padding:48px 28px}
h1{font-size:26px;font-weight:500;line-height:1.5;margin:0 0 18px}
.down{margin-left:4px;font-size:24px}
.tutorial-list{margin:0;padding-left:30px;font-size:20px;line-height:2.15}
.tutorial-list a{color:#1455c0;text-decoration:none}.tutorial-list .todo{color:#4b5563}
.tutorial-list a:hover,.tutorial-list a:focus{text-decoration:underline;text-underline-offset:4px}
@media(max-width:600px){.tutorial-group{padding:28px 20px}.tutorial-list{font-size:18px}}