html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font-size:100%;font:inherit;vertical-align:baseline}article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block}body{line-height:1}ol,ul,dl{list-style:none}blockquote,q{quotes:none}blockquote:before,blockquote:after,q:before,q:after{content:'';content:none}table{border-collapse:collapse;border-spacing:0}*,*:before,*:after{-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box}:root{--oc-gray-0: #f8f9fa;--oc-gray-1: #f1f3f5;--oc-gray-2: #e9ecef;--oc-gray-3: #dee2e6;--oc-gray-4: #ced4da;--oc-gray-5: #adb5bd;--oc-gray-6: #868e96;--oc-gray-7: #495057;--oc-gray-8: #343a40;--oc-gray-9: #212529;--oc-blue-0: #e8f7ff;--oc-blue-6: #228ae6;--oc-blue-8: #1b6ec2;--oc-indigo-9: #364fc7;--divider-color: #e9ecef;--text-color: #343a40}html.dark-mode{--oc-gray-0: #212529;--oc-gray-1: #343a40;--oc-gray-2: #495057;--oc-gray-3: #6c757d;--oc-gray-4: #adb5bd;--oc-gray-5: #ced4da;--oc-gray-6: #dee2e6;--oc-gray-7: #e9ecef;--oc-gray-8: #f1f3f5;--oc-gray-9: #f8f9fa;--oc-blue-0: #444d56;--oc-blue-6: #80acff;--oc-blue-8: #81a6ed;--oc-indigo-9: #9775fa;--divider-color: #333;--text-color: #e0e0e0}html{font-size:16px}body{background-color:var(--oc-gray-0);font-family:"Noto Serif","PT Serif",source-han-serif-sc,"Source Han Serif","Songti SC",serif;color:var(--oc-gray-8);line-height:1.7em}.container{margin:40px 0;max-width:1000px;padding:0 20px;width:100%}h1,h2,h3,h4,h5,h6{line-height:2em;margin:1em 0 16px;padding:0}@media screen and (max-width: 1200px){h1,h2,h3,h4,h5,h6{line-height:1.6em}}h1,h2,h3,h5{font-weight:bold}h1{font-size:30px}h1 a{color:inherit}h2{font-size:24px}h3{font-size:20px}h4{font-size:20px;color:var(--oc-gray-6)}h6{color:var(--oc-gray-6)}p{color:var(--oc-gray-8);margin:1em 0}a{color:var(--oc-blue-8);text-decoration:none;cursor:pointer;-webkit-transition:all 0.5s;-moz-transition:all 0.5s;-ms-transition:all 0.5s;-o-transition:all 0.5s;transition:all 0.5s}a:hover,a:active{color:var(--oc-blue-6)}em,i{font-style:italic}strong,b{font-weight:bold}sub{vertical-align:sub;font-size:smaller}sup{vertical-align:super;font-size:smaller}hr{border:0;border-top:1px solid var(--oc-gray-2);margin:1.5em auto}ol>li:before,ul>li:before{position:absolute;width:1.4em;margin-left:-1.4em;display:inline-block;box-sizing:border-box;text-align:right}ul>li:before{content:"\2022";padding-right:.3em;font-family:inherit;font-size:1.5em;line-height:1.2}ul>li>ul>li:before{content:"\25E6";font-size:1.2em}ul>li>ul>li>ul>li:before{content:"\25AA"}ol{counter-reset:section}ol>li:before{counter-increment:section;content:counter(section) ".";padding-right:.3em;font-family:inherit;font-size:1em;line-height:inherit}ol>li,ul>li{margin:0 auto .4em 1.4em;line-height:1.55}ol>li>ol,ol>li>ul,ul>li>ol,ul>li>ul{margin-top:.4em}li>ol>li,li>ul>li{font-size:.95em;margin:0 auto .38em 1.33em}dt{float:left;width:180px;overflow:auto;clear:left;text-align:right;white-space:nowrap;font-weight:bold;margin-bottom:.4em}@media screen and (max-width: 1200px){dt{width:120px}}dd{margin-left:200px;margin-bottom:.4em}@media screen and (max-width: 1200px){dd{margin-left:140px}}table{margin-bottom:1rem;width:100%;border:1px solid var(--oc-gray-2);border-collapse:collapse}td,th{padding:.25rem .5rem;border:1px solid var(--oc-gray-2)}tbody tr:nth-child(odd) td,tbody tr:nth-child(odd) th{background-color:var(--oc-gray-1)}blockquote{font-weight:300;padding:0 0 0 1.4rem;margin:0 2rem 1rem 0;border-left:0.2em solid var(--oc-gray-3)}blockquote p{color:var(--oc-gray-6)}blockquote p:last-child{margin-bottom:0}a.footnote,.post p a.footnote,.post ol a.footnote,.post ul a.footnote{margin:0 3px;padding:0 2px;font-size:14px;text-align:center;border:1px solid var(--oc-gray-1);border-radius:2px;-webkit-text-stroke:0.25px;-webkit-transition:0.2s ease-out all;transition:0.2s ease-out all;text-decoration:none}a.footnote:hover,.post p a.footnote:hover,.post ol a.footnote:hover,.post ul a.footnote:hover{background:var(--oc-gray-1)}.footnotes{border-top:1px solid var(--oc-gray-2);font-size:14px}img{display:block;max-width:100%;margin:0 0 1em;border-radius:5px}::-moz-selection{background:var(--oc-gray-3)}::selection{background:var(--oc-gray-3)}.clearfix:before,.clearfix:after{content:" ";display:table}.clearfix:after{clear:both}.wrapper-sidebar{width:25%;-webkit-background-size:cover;background-size:cover;background-color:var(--oc-gray-0);height:100%;top:0;left:0;position:fixed;z-index:4;border-right:1px solid var(--oc-gray-2)}@media screen and (max-width: 1200px){.wrapper-sidebar{width:100%;height:auto;padding-bottom:24px;position:relative;border-bottom:1px solid var(--oc-gray-2);border-right:0}}.sidebar{padding:20px 0}@media screen and (max-width: 1200px){.sidebar{text-align:center}}.site-info{text-align:center;margin:100px auto 0}@media screen and (max-width: 1200px){.site-info{float:none;display:block;margin:0 auto}}.site-info .site-avatar{margin:0 auto;display:block;max-width:200px;max-height:200px}@media screen and (max-width: 1200px){.site-info .site-avatar{max-width:120px;max-height:120px}}.site-info .site-avatar img{display:inline-block;border-radius:2px}.site-name{margin:0 auto;color:var(--oc-gray-8);cursor:pointer;font-family:"Noto Serif","PT Serif",source-han-serif-sc,"Source Han Serif","Songti SC",serif;font-weight:700;font-size:28px;letter-spacing:1px}.site-description{margin:15px auto;color:var(--oc-gray-6);font-size:16px}@media screen and (max-width: 1200px){.site-description{margin:10px auto}}.navlist{text-align:center}nav{display:block;margin-top:23px;font-family:"Noto Serif","PT Serif",source-han-serif-sc,"Source Han Serif","Songti SC",serif;font-weight:500;font-size:18px}@media screen and (max-width: 1200px){nav{margin-top:9px;font-size:16px}}nav a{margin:0 10px;text-align:right;font-weight:300;letter-spacing:1px}@media screen and (max-width: 1200px){nav a{margin:0 10px;color:var(--oc-blue-8)}}.wrapper-content{float:right;width:70%}@media screen and (max-width: 1200px){.wrapper-content{float:none;width:100%}}.posts .tag{display:inline;font-weight:300;font-size:14px}.posts .tag li:before{content:''}.posts .tag li{display:inline;margin:0}.posts .tag li>a{margin:3px 3px 3px 0;padding:.5px 4px;color:var(--oc-gray-8);background-color:var(--oc-gray-2);border-radius:3px}.posts .tag li>a:hover{color:var(--oc-blue-8);background-color:var(--oc-blue-0)}.posts>.post{padding-bottom:2em;border-bottom:1px solid var(--oc-gray-2)}.posts>.post:last-child{padding-bottom:1em;border-bottom:none}.date{font-weight:300;font-size:14px;color:var(--oc-gray-6);margin-right:4px}.post h1{margin-bottom:.1em}.post .read-more{font-size:15px}.search-container{margin-bottom:1.5em}.search-container input{width:90%;height:35px;background-color:var(--oc-gray-1);color:var(--text-color);line-height:35px;margin-top:10px;padding:10px 16px;border:1px solid var(--oc-gray-4);font-size:16px;border-radius:17px;outline:none;box-sizing:border-box;box-shadow:inset 0 1px 1px rgba(0,0,0,0.075)}.search-container input:focus{border-color:var(--oc-blue-6);box-shadow:inset 0 1px 1px rgba(0,0,0,0.075),0 0 8px rgba(102,175,233,0.6)}.search-container #results-container{list-style:none;margin:12px 0 0;padding:0}.search-container #results-container li{margin:0.4em 0}.toc{width:320px;height:100%;overflow-y:auto;right:0;top:0;position:fixed;z-index:4;padding:20px}.toc:before{content:"目录";margin:0 0 1em 1em;font-weight:700;font-size:1.2em;display:block;padding-bottom:0.6em;border-bottom:3px double var(--oc-gray-2)}.toc li:before{content:""}@media screen and (max-width: 1200px){.toc{display:block;width:320px;z-index:10000;background-color:var(--oc-gray-0);border-left:1px solid var(--oc-gray-2);box-shadow:-4px 0 16px rgba(0,0,0,0.08);transform:translateX(100%);visibility:hidden;pointer-events:none;transition:transform 0.3s ease, visibility 0.3s ease}.toc.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}}body.toc-drawer-open iframe{pointer-events:none}.toc-toggle{display:none;position:fixed;top:16px;right:16px;z-index:10001;width:40px;height:40px;padding:0;margin:0;border:1px solid var(--oc-gray-2);border-radius:8px;background-color:var(--oc-gray-0);cursor:pointer;box-shadow:0 2px 5px rgba(0,0,0,0.1);align-items:center;justify-content:center;line-height:0;-webkit-appearance:none;appearance:none;font:inherit;color:inherit;transition:background-color 0.2s ease, border-color 0.2s ease}@media screen and (max-width: 1200px){.toc-toggle{display:flex}}.toc-toggle:hover,.toc-toggle.is-active{background-color:var(--oc-blue-0)}.toc-toggle svg{width:24px;height:24px;display:block}.toc-toggle .toc-icon-plate{fill:#90caf9}.toc-toggle .toc-icon-detail{fill:var(--oc-gray-8)}@media screen and (max-width: 2200px) and (min-width: 1200px){.withtoc{padding-right:350px}}.pagination{border-top:1px solid var(--oc-gray-2);font-weight:300;padding:40px 0;width:100%;display:inline-block}@media screen and (max-width: 1200px){.pagination{font-size:14px;padding:24px 0}}.pagination>.prev{float:left;width:50%}.pagination>.prev a{color:var(--oc-gray-6);border:1px solid var(--oc-gray-2);padding:10px 20px;background:var(--oc-gray-0)}.pagination>.prev a:hover,.pagination>.prev a:focus{color:var(--oc-blue-6);border:1px solid var(--oc-blue-6);background-color:var(--oc-blue-0)}.pagination>.next{float:right;text-align:right;width:50%}.pagination>.next a{color:var(--oc-gray-6);border:1px solid var(--oc-gray-2);padding:10px 20px;background:var(--oc-gray-0)}.pagination>.next a:hover,.pagination>.next a:focus{color:var(--oc-blue-6);border:1px solid var(--oc-blue-6);background-color:var(--oc-blue-0)}.tags>.label>li:before{content:""}.tags>.label>li{margin:0;font-size:14px;font-weight:300;display:inline}.tags>.label>li>a{display:inline-block;margin:1px;color:var(--oc-gray-8);background-color:var(--oc-gray-2);border-radius:3px}.tags>.label>li>a:hover{background-color:var(--oc-blue-0)}.tags>.label>li>a span{float:left;padding:.5px 5px}.tags>.label>li>a span.count{background-color:#868e961a;border-radius:0 3px 3px 0}.tags>.tag a{color:var(--oc-gray-8)}.tags>.tag time{color:var(--oc-gray-6);font-size:14px;font-weight:300;margin-left:3px}.wrapper-footer-desktop{margin-top:50px;border-top:1px solid var(--oc-gray-2);background-color:var(--oc-gray-0);position:absolute;clear:both;width:100%;bottom:0}@media screen and (max-width: 1200px){.wrapper-footer-desktop{display:none}}.wrapper-footer-mobile{display:none}@media screen and (max-width: 1200px){.wrapper-footer-mobile{display:block;width:100%;border-top:1px solid var(--oc-gray-2);background-color:var(--oc-gray-0)}}footer{padding:20px 0;text-align:center}footer p{font-size:14px;color:var(--oc-gray-6)}footer .svg-icon{display:block;font-size:0;list-style:none;margin:0;text-align:center}footer .svg-icon li{display:inline-block;margin:10px}footer .svg-icon svg{height:20px;width:20px;fill:var(--oc-gray-6)}footer .svg-icon svg:hover{fill:var(--oc-blue-6)}.theme-toggle{position:fixed;bottom:20px;left:20px;z-index:9999;width:40px;height:40px;padding:0;border-radius:50%;background-color:var(--oc-gray-0);border:1px solid var(--oc-gray-2);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px 5px rgba(0,0,0,0.1);transition:all 0.3s ease;-webkit-appearance:none;appearance:none;font:inherit;color:inherit}.theme-toggle:hover{background-color:var(--oc-blue-0)}.theme-toggle svg{width:20px;height:20px;fill:var(--oc-gray-8)}.theme-menu{position:fixed;bottom:70px;left:20px;z-index:9998;background-color:var(--oc-gray-0);opacity:0.95;border:1px solid var(--divider-color);border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,0.15);display:none;overflow:hidden}.theme-option{display:block;width:100%;padding:10px 16px;margin:0;border:0;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer;transition:background-color 0.2s;-webkit-appearance:none;appearance:none}.theme-option:hover,.theme-option.active{background-color:var(--oc-blue-0)}.theme-option.active{font-weight:bold}html.dark-mode body{background-color:var(--oc-gray-0);color:var(--oc-gray-8)}html.dark-mode a{color:var(--oc-blue-6)}html.dark-mode a:hover{color:var(--oc-blue-8)}html.dark-mode .wrapper-sidebar{background-color:var(--oc-gray-0);border-right-color:var(--oc-gray-2)}html.dark-mode .post,html.dark-mode .sidebar,html.dark-mode .search-container input{color:var(--text-color);border-color:var(--divider-color)}html.dark-mode .toc-toggle .toc-icon-detail{fill:var(--oc-gray-9)}html.dark-mode table{border-color:var(--oc-gray-3)}html.dark-mode table tbody tr:nth-child(odd) td{background-color:var(--oc-gray-2)}pre,code{font-family:"Menlo","Courier New","Monaco",monospace}code.highlighter-rouge{font-size:90%;color:var(--oc-indigo-9);background-color:var(--oc-gray-1);padding:.1em .2em;border-radius:3px}pre.highlight{font-size:14px;padding:.45em .45em .45em .625em;border:1px solid var(--oc-gray-3);border-radius:3px;margin:1em 0;overflow:auto}.highlight{background:var(--oc-gray-0)}.highlight .c{color:#999988;font-style:italic}.highlight .err{color:#a61717;background-color:#e3d2d2}.highlight .k{font-weight:bold}.highlight .o{font-weight:bold}.highlight .cm{color:#999988;font-style:italic}.highlight .cp{color:#999999;font-weight:bold}.highlight .c1{color:#999988;font-style:italic}.highlight .cs{color:#999999;font-weight:bold;font-style:italic}.highlight .gd{color:#000000;background-color:#fdd}.highlight .gd .x{color:#000000;background-color:#faa}.highlight .ge{font-style:italic}.highlight .gr{color:#a00}.highlight .gh{color:#999}.highlight .gi{color:#000000;background-color:#dfd}.highlight .gi .x{color:#000000;background-color:#afa}.highlight .go{color:#888}.highlight .gp{color:#555}.highlight .gs{font-weight:bold}.highlight .gu{color:#aaa}.highlight .gt{color:#a00}.highlight .kc{font-weight:bold}.highlight .kd{font-weight:bold}.highlight .kp{font-weight:bold}.highlight .kr{font-weight:bold}.highlight .kt{color:#445588;font-weight:bold}.highlight .m{color:#099}.highlight .s{color:#d14}.highlight .na{color:teal}.highlight .nb{color:#0086B3}.highlight .nc{color:#445588;font-weight:bold}.highlight .no{color:teal}.highlight .ni{color:purple}.highlight .ne{color:#990000;font-weight:bold}.highlight .nf{color:#990000;font-weight:bold}.highlight .nn{color:#555}.highlight .nt{color:navy}.highlight .nv{color:teal}.highlight .ow{font-weight:bold}.highlight .w{color:#bbb}.highlight .mf{color:#099}.highlight .mh{color:#099}.highlight .mi{color:#099}.highlight .mo{color:#099}.highlight .sb{color:#d14}.highlight .sc{color:#d14}.highlight .sd{color:#d14}.highlight .s2{color:#d14}.highlight .se{color:#d14}.highlight .sh{color:#d14}.highlight .si{color:#d14}.highlight .sx{color:#d14}.highlight .sr{color:#009926}.highlight .s1{color:#d14}.highlight .ss{color:#990073}.highlight .bp{color:#999}.highlight .vc{color:teal}.highlight .vg{color:teal}.highlight .vi{color:teal}.highlight .il{color:#099}html.dark-mode .highlight{background:var(--oc-gray-1)}html.dark-mode .highlight .c,html.dark-mode .highlight .cm,html.dark-mode .highlight .c1,html.dark-mode .highlight .cs{color:#8a9199}html.dark-mode .highlight .k,html.dark-mode .highlight .o,html.dark-mode .highlight .kc,html.dark-mode .highlight .kd,html.dark-mode .highlight .kp,html.dark-mode .highlight .kr,html.dark-mode .highlight .kt{color:#ff7b72;font-weight:normal}html.dark-mode .highlight .s,html.dark-mode .highlight .sb,html.dark-mode .highlight .sc,html.dark-mode .highlight .sd,html.dark-mode .highlight .s2,html.dark-mode .highlight .se,html.dark-mode .highlight .sh,html.dark-mode .highlight .si,html.dark-mode .highlight .sx,html.dark-mode .highlight .s1,html.dark-mode .highlight .ss{color:#a5d6ff}html.dark-mode .highlight .m,html.dark-mode .highlight .mf,html.dark-mode .highlight .mh,html.dark-mode .highlight .mi,html.dark-mode .highlight .mo,html.dark-mode .highlight .il{color:#79d3b3}html.dark-mode .highlight .na,html.dark-mode .highlight .nb,html.dark-mode .highlight .nc,html.dark-mode .highlight .no,html.dark-mode .highlight .ni,html.dark-mode .highlight .ne,html.dark-mode .highlight .nf,html.dark-mode .highlight .nn,html.dark-mode .highlight .nt,html.dark-mode .highlight .nv,html.dark-mode .highlight .vc,html.dark-mode .highlight .vg,html.dark-mode .highlight .vi{color:#d2a8ff}html.dark-mode .highlight .err{color:#fff;background-color:#f87171}html.dark-mode .highlight .gd{color:#f87171;background-color:#3f1d1d}html.dark-mode .highlight .gi{color:#4ade80;background-color:#1a3320}html.dark-mode code.highlighter-rouge{background-color:var(--oc-gray-2);color:#e5e7eb;border:1px solid var(--oc-gray-3)}