:root{--width:660px;--font-yahei:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Ubuntu,"Helvetica Neue",Helvetica,Arial,"PingFangSC-Regular","Hiragino Sans GB","Lantinghei SC","Microsoft Yahei","Source Han Sans CN","WenQuanYi Micro Hei",SimSun,sans-serif;--font-fangsong:Baskerville,"Times New Roman","Liberation Serif",STFangsong,FangSong,FangSong_GB2312,"CWTEX\-F",serif;--font-songti:Georgia,"Nimbus Roman No9 L","Songti SC","Noto Serif CJK SC","Source Han Serif SC","Source Han Serif CN",STSong,"AR PL New Sung","AR PL SungtiL GB",NSimSun,SimSun,"TW\-Sung","WenQuanYi Bitmap Song","AR PL UMing CN","AR PL UMing HK","AR PL UMing TW","AR PL UMing TW MBE",PMingLiU,MingLiU,serif;--font-scale:1em;--background-color:#fff;--heading-color:#222;--text-color:#444;--link-color:#3273dc;--visited-color:#8b6fcb;--code-background-color:#f2f2f2;--code-color:#222;--blockquote-color:#222;--gray-color:#999}@media (prefers-color-scheme:dark){:root{--background-color:#111;--heading-color:#eee;--text-color:#ddd;--link-color:#6ab0e5;--visited-color:#8b6fcb;--code-background-color:#000;--code-color:#ddd;--blockquote-color:#ccc;--gray-color:#999}}body{   font-family:var(--font-songti);font-size:var(--font-scale);margin:auto;padding:20px;max-width:var(--width);text-align:left;background-color:var(--background-color);word-wrap:break-word;overflow-wrap:break-word;line-height:1.7;color:var(--text-color)}html{scroll-behavior:smooth}h1,h2,h3,h4,h5,h6{color:var(--heading-color);display:inherit}a{color:var(--link-color);cursor:pointer;text-decoration:none;border-bottom:1px solid transparent}a:hover,a[aria-current*=page]{border-bottom:1px solid}nav a{margin-right:8px}strong,b{color:var(--heading-color)}button{margin:0;cursor:pointer}table{width:100%}hr{border:0;border-top:1px dashed}img{max-width:100%;height:auto}time,.intro{color:var(--gray-color)}code{font-family:monospace;padding:2px;background-color:var(--code-background-color);color:var(--code-color);border-radius:4px}blockquote{border-left:1px solid #999;color:var(--code-color);padding-left:20px;font-style:italic}input{border-radius:4px;border:1px solid var(--gray-color);margin:0 0 15px;padding:10px;width:50%}input:focus{outline:0}input[type=submit]{padding:9px 10px 10px;text-align:center;width:80px;display:inline-flex;background-color:var(--heading-color);color:var(--code-background-color);border:none}input[type=submit]:hover{cursor:pointer;opacity:.7}header,footer{padding:20px 0}.title:hover{text-decoration:none;border:none}.title h1,.title h2{font-size:1.5em}ul.posts{list-style-type:none;padding:unset}ul.posts li{display:flex;margin:3px 0}ul.posts li span{flex:0 0 115px}ul.posts li a:visited{color:var(--visited-color)}.tags{margin-top:30px;color:var(--gray-color)}.tags a{margin:0 5px 0 2px}