*,:after,:before{box-sizing:border-box;-webkit-tap-highlight-color:transparent}a,abbr,address,b,blockquote,body,button,caption,cite,code,dd,del,dl,dt,em,figcaption,figure,h1,h2,h3,h4,h5,h6,html,i,img,input,kbd,li,menu,ol,p,pre,small,strong,table,td,th,tr,ul{border:0;font-size:100%;font:inherit;margin:0;padding:0;vertical-align:baseline}table{border-collapse:collapse;border-spacing:0}caption,th{text-align:left}ol,ul{list-style:none}a{color:#212529;text-decoration:none}input{outline:none}input[type=password]::-ms-clear,input[type=password]::-ms-reveal{display:none}iframe{border:none;border-radius:0;box-shadow:none;margin:0;overflow:hidden;overflow:clip!important;overflow-clip-margin:content-box!important;padding:0}img{height:auto;max-width:100%}button{background-color:transparent;cursor:pointer}dialog{border:none;outline:none;padding:0}dialog::backdrop{background:#0009}@font-face{font-display:swap;font-family:Inter;font-style:normal;font-weight:400;src:url(../fonts/InterVariable.woff2) format("woff2")}body,html{font-size:16px}a,body,html{font-family:system-ui,-apple-system,BlinkMacSystemFont,Inter,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Microsoft YaHei,sans-serif}code,kbd,pre{font-family:Consolas,ui-monospace,SFMono-Regular,SF Mono,Menlo,Liberation Mono,PingFang SC,Microsoft YaHei,monospace}sub,sup{font-size:12px}:root{background-color:#fff}:root,:root a,:root dialog,:root input{color:#212529}:root input::-webkit-input-placeholder,:root textarea::-webkit-input-placeholder{color:#a5b1bd}html[data-theme=dark]{background-color:#181b21;color:#adbbc7}html[data-theme=dark] a,html[data-theme=dark] dialog,html[data-theme=dark] input{color:#adbbc7}html[data-theme=dark] input{caret-color:#29a4ab}html[data-theme=dark] input::-webkit-input-placeholder,html[data-theme=dark] textarea::-webkit-input-placeholder{color:#586270}@keyframes fade{0%{opacity:0}to{opacity:1}}.fade-enter-active,.fade-leave-active{transition:opacity .2s ease}.fade-enter-from,.fade-leave-to{opacity:0}.row{display:grid;grid-template-columns:repeat(12,1fr)}.row>[class*=col]{grid-area:auto/auto/auto/span 12}@media screen and (min-width:576px){.row .col-sm-1{grid-area:auto/auto/auto/span 1}.row .col-sm-2{grid-area:auto/auto/auto/span 2}.row .col-sm-3{grid-area:auto/auto/auto/span 3}.row .col-sm-4{grid-area:auto/auto/auto/span 4}.row .col-sm-5{grid-area:auto/auto/auto/span 5}.row .col-sm-6{grid-area:auto/auto/auto/span 6}.row .col-sm-7{grid-area:auto/auto/auto/span 7}.row .col-sm-8{grid-area:auto/auto/auto/span 8}.row .col-sm-9{grid-area:auto/auto/auto/span 9}.row .col-sm-10{grid-area:auto/auto/auto/span 10}.row .col-sm-11{grid-area:auto/auto/auto/span 11}.row .col-sm-12{grid-area:auto/auto/auto/span 12}}@media screen and (min-width:768px){.row .col-md-1{grid-area:auto/auto/auto/span 1}.row .col-md-2{grid-area:auto/auto/auto/span 2}.row .col-md-3{grid-area:auto/auto/auto/span 3}.row .col-md-4{grid-area:auto/auto/auto/span 4}.row .col-md-5{grid-area:auto/auto/auto/span 5}.row .col-md-6{grid-area:auto/auto/auto/span 6}.row .col-md-7{grid-area:auto/auto/auto/span 7}.row .col-md-8{grid-area:auto/auto/auto/span 8}.row .col-md-9{grid-area:auto/auto/auto/span 9}.row .col-md-10{grid-area:auto/auto/auto/span 10}.row .col-md-11{grid-area:auto/auto/auto/span 11}.row .col-md-12{grid-area:auto/auto/auto/span 12}}@media screen and (min-width:992px){.row .col-lg-1{grid-area:auto/auto/auto/span 1}.row .col-lg-2{grid-area:auto/auto/auto/span 2}.row .col-lg-3{grid-area:auto/auto/auto/span 3}.row .col-lg-4{grid-area:auto/auto/auto/span 4}.row .col-lg-5{grid-area:auto/auto/auto/span 5}.row .col-lg-6{grid-area:auto/auto/auto/span 6}.row .col-lg-7{grid-area:auto/auto/auto/span 7}.row .col-lg-8{grid-area:auto/auto/auto/span 8}.row .col-lg-9{grid-area:auto/auto/auto/span 9}.row .col-lg-10{grid-area:auto/auto/auto/span 10}.row .col-lg-11{grid-area:auto/auto/auto/span 11}.row .col-lg-12{grid-area:auto/auto/auto/span 12}}@media screen and (min-width:1200px){.row .col-xl-1{grid-area:auto/auto/auto/span 1}.row .col-xl-2{grid-area:auto/auto/auto/span 2}.row .col-xl-3{grid-area:auto/auto/auto/span 3}.row .col-xl-4{grid-area:auto/auto/auto/span 4}.row .col-xl-5{grid-area:auto/auto/auto/span 5}.row .col-xl-6{grid-area:auto/auto/auto/span 6}.row .col-xl-7{grid-area:auto/auto/auto/span 7}.row .col-xl-8{grid-area:auto/auto/auto/span 8}.row .col-xl-9{grid-area:auto/auto/auto/span 9}.row .col-xl-10{grid-area:auto/auto/auto/span 10}.row .col-xl-11{grid-area:auto/auto/auto/span 11}.row .col-xl-12{grid-area:auto/auto/auto/span 12}}@media screen and (min-width:1400px){.row .col-xxl-1{grid-area:auto/auto/auto/span 1}.row .col-xxl-2{grid-area:auto/auto/auto/span 2}.row .col-xxl-3{grid-area:auto/auto/auto/span 3}.row .col-xxl-4{grid-area:auto/auto/auto/span 4}.row .col-xxl-5{grid-area:auto/auto/auto/span 5}.row .col-xxl-6{grid-area:auto/auto/auto/span 6}.row .col-xxl-7{grid-area:auto/auto/auto/span 7}.row .col-xxl-8{grid-area:auto/auto/auto/span 8}.row .col-xxl-9{grid-area:auto/auto/auto/span 9}.row .col-xxl-10{grid-area:auto/auto/auto/span 10}.row .col-xxl-11{grid-area:auto/auto/auto/span 11}.row .col-xxl-12{grid-area:auto/auto/auto/span 12}}.hidden{display:none!important}.dialog-open{transform:scale(1)!important}.body-overflow{overflow:hidden}.borderless{border:none!important}:root{--bg-white-black1:#fff;--bg-white-black2:#fff;--bg-white-black3:#fff;--bg-white-black4:#fff;--bg-white-silver:#fff;--bg-white-gray:#fff;--bg-silver-black1:#f4f7f9;--bg-silver-black2:#f4f7f9;--bg-silver-black3:#f4f7f9;--bg-silver-silver:#f4f7f9;--bg-gray-black1:#e5e7eb;--bg-gray-black2:#e5e7eb;--bg-gray-black3:#e5e7eb;--bg-gray-silver:#e5e7eb;--bg-green:#479f8f;--bg-cyan-black1:#e3f7ee;--bg-cyan-black2:#e3f7ee;--bg-cyan-black3:#e3f7ee;--bg-gradient:linear-gradient(#d3efe2,#f4f7f9);--gradient-text1-bg:linear-gradient(90deg,#1380ba,#188149);--gradient-text2-bg:linear-gradient(90deg,#188149,#1380ba,#188149);--text-black-white:#000;--text-black-silver:#000;--text-black-gray:#000;--text-black-blue:#000;--text-black-green:#000;--text-black1-white:#212529;--text-black1-silver:#212529;--text-black1-gray:#212529;--text-black1-blue:#212529;--text-black1-green:#212529;--text-black2-white:#424544;--text-black2-silver:#424544;--text-black2-gray:#424544;--text-black2-blue:#424544;--text-black2-green:#424544;--text-black3-white:#6c7075;--text-black3-silver:#6c7075;--text-black3-gray:#6c7075;--text-black3-blue:#6c7075;--text-black3-green:#6c7075;--text-white-white:#fff;--text-white-silver:#fff;--text-white-gray:#fff;--text-white-blue:#fff;--text-white-green:#fff;--text-silver-white:#dfe6ed;--text-silver-silver:#dfe6ed;--text-silver-gray:#dfe6ed;--text-silver-blue:#dfe6ed;--text-silver-green:#dfe6ed;--text-gray-white:#969696;--text-gray-silver:#969696;--text-gray-gray:#969696;--text-gray-blue:#969696;--text-gray-green:#969696;--text-green-white:#0b876c;--text-green-silver:#0b876c;--text-green-gray:#0b876c;--text-green-blue:#0b876c;--text-green-green:#0b876c;--text-blue-blue:#0246cf;--text-blue-green:#0246cf;--text-red-red:#ff4d4f;--border-transparent-black1:transparent;--border-transparent-black2:transparent;--border-transparent-black3:transparent;--border-transparent-black4:transparent;--border-white-black1:#fff;--border-white-black2:#fff;--border-white-black3:#fff;--border-white-black4:#fff;--border-light-black1:#dde5ed;--border-light-black2:#dde5ed;--border-light-black3:#dde5ed;--border-silver-black1:#ced7e0;--border-silver-black2:#ced7e0;--border-silver-black3:#ced7e0;--border-gray-black1:#c1c3c7;--border-gray-black2:#c1c3c7;--border-gray-black3:#c1c3c7;--border-cyan-gray:#43b79e;--box-shadow1:0 0 5px 0 rgba(28,31,33,.08);--box-shadow2:0 2px 12px 0 rgba(0,0,0,.1);--scrollbar-track-bg:#f5f8ff;--scrollbar-track-border:#f5f5f5;--scrollbar-track-box-shadow:inset 0 0 5px rgba(0,0,0,.1);--scrollbar-thumb-bg:#d2d6db;--scrollbar-thumb-hover:#c5cacf;--scrollbar-corner-bg:#f5f8ff;--img-opacity:1}html[data-theme=dark]{--bg-white-black1:#181b21;--bg-white-black2:#222730;--bg-white-black3:#323740;--bg-white-black4:#485063;--bg-white-silver:silver;--bg-white-gray:#a1a1a1;--bg-silver-black1:#181b21;--bg-silver-black2:#222730;--bg-silver-black3:#323740;--bg-silver-silver:silver;--bg-gray-black1:#181b21;--bg-gray-black2:#222730;--bg-gray-black3:#323740;--bg-gray-silver:silver;--bg-cyan-black1:#181b21;--bg-cyan-black2:#222730;--bg-cyan-black3:#323740;--bg-gradient:#181b21;--gradient-text1-bg:linear-gradient(90deg,#65c0f9,#71fbb1);--gradient-text2-bg:linear-gradient(90deg,#65c0f9,#51eacb);--text-black-white:#dfe6ed;--text-black-silver:#adbbc7;--text-black-gray:#848d97;--text-black-blue:#7fc1f0;--text-black-green:#32c8b9;--text-black1-white:#dfe6ed;--text-black1-silver:#adbbc7;--text-black1-gray:#848d97;--text-black1-blue:#7fc1f0;--text-black1-green:#32c8b9;--text-black2-white:#dfe6ed;--text-black2-silver:#adbbc7;--text-black2-gray:#848d97;--text-black2-blue:#7fc1f0;--text-black2-green:#32c8b9;--text-black3-white:#dfe6ed;--text-black3-silver:#adbbc7;--text-black3-gray:#848d97;--text-black3-blue:#7fc1f0;--text-black3-green:#32c8b9;--text-white-white:#dfe6ed;--text-white-silver:#adbbc7;--text-white-gray:#848d97;--text-white-blue:#7fc1f0;--text-white-green:#32c8b9;--text-silver-white:#dfe6ed;--text-silver-silver:#adbbc7;--text-silver-gray:#848d97;--text-silver-blue:#7fc1f0;--text-silver-green:#32c8b9;--text-gray-white:#dfe6ed;--text-gray-silver:#adbbc7;--text-gray-gray:#848d97;--text-gray-blue:#7fc1f0;--text-gray-green:#32c8b9;--text-green-white:#dfe6ed;--text-green-silver:#adbbc7;--text-green-gray:#848d97;--text-green-blue:#7fc1f0;--text-green-green:#32c8b9;--text-blue-blue:#7fc1f0;--text-blue-green:#5cd2af;--text-red-red:#ff7f73;--border-transparent-black1:#3b4048;--border-transparent-black2:#485063;--border-transparent-black3:#586270;--border-transparent-black4:#768396;--border-white-black1:#3b4048;--border-white-black2:#485063;--border-white-black3:#586270;--border-white-black4:#768396;--border-light-black1:#3b4048;--border-light-black2:#485063;--border-light-black3:#586270;--border-silver-black1:#3b4048;--border-silver-black2:#485063;--border-silver-black3:#586270;--border-gray-black1:#3b4048;--border-gray-black2:#485063;--border-gray-black3:#586270;--border-cyan-gray:#30363d;--box-shadow1:none;--box-shadow2:none;--scrollbar-track-bg:#2d323b;--scrollbar-track-border:#323740;--scrollbar-track-box-shadow:inset 0 0 5px rgba(0,0,0,.3);--scrollbar-thumb-bg:#50555e;--scrollbar-thumb-hover:#414652;--scrollbar-corner-bg:#2d323b;--img-opacity:.9}:root{--about-nav-bg:#fff;--about-nav-mobile-bg:#fff;--about-a-bg:linear-gradient(90deg,#0556f3,#0556f3);--about-border:#c1c3c7;--about-title-text:#555f75;--about-header-bg:linear-gradient(90deg,#48aae7,#34d07d);--about-triangle-bg:#f2f4f8}html[data-theme=dark]{--about-nav-bg:#222730;--about-nav-mobile-bg:#323740;--about-a-bg:linear-gradient(90deg,#7fc1f0,#7fc1f0);--about-border:#485063;--about-title-text:#7f8695;--about-header-bg:linear-gradient(90deg,#529de0,#68bfb5);--about-triangle-bg:#181b21}:root{--article-h2-bg:linear-gradient(90deg,#188149,#1380ba,#188149);--article-h2-border:#8ab8a9;--article-h3-bg:linear-gradient(90deg,#212529,#212529);--article-a-text:#0246cf;--article-a-bg:linear-gradient(90deg,#0556f3,#0556f3);--article-strong-text:#212529;--article-strong-bg:linear-gradient(90deg,#c1e3ff,#c1e3ff);--article-strong-font-weight:bold;--article-block-bg:linear-gradient(90deg,#212529,#212529);--article-box-strong-bg:linear-gradient(90deg,#accded,#accded);--article-code-bg:#f9f2f4;--article-code-text:crimson;--article-hljs-bg:#1e2d30;--article-infobox-hljs-bg:#1e2d30;--article-table-thead-bg:#393e47;--article-table-tr-bg:#f4f6f8;--article-table-border:none;--article-table-radius:5px;--article-category-table-tr-bg:#f0f3fa;--article-table-a-text:#0b876c;--article-table-a-bg:linear-gradient(90deg,#0b876c,#0b876c);--article-box-bg:#ddedfa;--article-box-i-bg:#67abdc;--article-navbottom-bg:#f4f7f9;--aritlce-img-filter:brightness(1)}html[data-theme=dark]{--article-h2-bg:linear-gradient(90deg,#65c0f9,#71fbb1);--article-h2-border:#335c79;--article-h3-bg:linear-gradient(90deg,#6abaeb,#51eacb);--article-a-text:#32c8b9;--article-a-bg:linear-gradient(90deg,#32c8b9,#32c8b9);--article-strong-text:#7fc1f0;--article-strong-bg:none;--article-strong-font-weight:normal;--article-block-bg:linear-gradient(90deg,#80c1f0,#80c1f0);--article-box-strong-bg:none;--article-code-bg:#323740;--article-code-text:#7fc1f0;--article-hljs-bg:#323740;--article-infobox-hljs-bg:#222730;--article-table-thead-bg:#323740;--article-table-tr-bg:#323740;--article-table-border:1px solid #3b4048;--article-table-radius:0;--article-category-table-tr-bg:#323740;--article-table-a-text:#7fc1f0;--article-table-a-bg:linear-gradient(90deg,#7fc1f0,#7fc1f0);--article-box-bg:#323740;--article-box-i-bg:#619fcc;--article-navbottom-bg:#323740;--aritlce-img-filter:brightness(.9)}:root{--bookdetail-header-bg:linear-gradient(to bottom right,#43d497,#11c2fc);--bookdetail-header-h1-bg:linear-gradient(90deg,#fff,#fff);--bookdetail-header-h1-before-bg:#fff;--bookdetail-header-h1-after-bg:#fff;--bookdetail-header-active-text:#fff;--bookdetail-header-circle-border:hsla(0,0%,100%,.5);--bookdetail-main-bg:#f4f7f9;--bookdetail-main-h2-bg:linear-gradient(90deg,#10b6ed,#8ce3ff);--bookdetail-main-h2-triangle-bg:#f2f4f8;--bookdetail-main-p-quote-text:#f45252}html[data-theme=dark]{--bookdetail-header-bg:#181b21;--bookdetail-header-h1-bg:linear-gradient(90deg,#1ca5ed,#12d2af);--bookdetail-header-h1-before-bg:#1ca5ed;--bookdetail-header-h1-after-bg:#12d2af;--bookdetail-header-active-text:#3ed3da;--bookdetail-header-circle-border:rgba(62,211,218,.8);--bookdetail-main-bg:#323740;--bookdetail-main-h2-bg:linear-gradient(90deg,#529de0,#68bfb5);--bookdetail-main-h2-triangle-bg:#323740;--bookdetail-main-p-quote-text:#3ed3da}:root{--booklist-header-bg:linear-gradient(180deg,#50a3a2,#53e3a6);--booklist-header-h1-bg:linear-gradient(90deg,#fff,#fff);--booklist-header-h1-before-bg:#fff;--booklist-header-h1-after-bg:#fff;--booklist-header-i-bg:#6ad2b1;--booklist-list-bg:#f2f6f8;--booklist-list-h2-text-hover:#4d76f7;--booklist-list-linkbutton-bg:#29c9a7;--booklist-list-linkbutton-border:#29c9a7;--booklist-list-linkbutton-bg-hover:#24ad90;--booklist-list-linkbutton-text-hover:#fff;--booklist-list-order-bg:linear-gradient(180deg,#ff5e00,#ffcfb2);--booklist-list-order-triangle-bg:#fff}html[data-theme=dark]{--booklist-header-bg:#181b21;--booklist-header-h1-bg:linear-gradient(90deg,#1ca5ed,#12d2af);--booklist-header-h1-before-bg:#1ca5ed;--booklist-header-h1-after-bg:#12d2af;--booklist-header-i-bg:#1f232b;--booklist-list-bg:#323740;--booklist-list-h2-text-hover:#3ed3da;--booklist-list-linkbutton-bg:#323740;--booklist-list-linkbutton-border:#485063;--booklist-list-linkbutton-bg-hover:#323740;--booklist-list-linkbutton-text-hover:#3ed3da;--booklist-list-order-bg:linear-gradient(to bottom right,#529de0,#12d2af);--booklist-list-order-triangle-bg:#222730}:root{--cheatsheets-tr-border:#e5e5e5;--cheatsheets-tr-hover-bg:#fef7e9;--cheatsheets-status-1xx-bg:#ecf2f7;--cheatsheets-status-2xx-bg:#ebfff5;--cheatsheets-status-3xx-bg:#e4f3fd;--cheatsheets-status-4xx-bg:#fefae9;--cheatsheets-status-5xx-bg:#ffeaea}html[data-theme=dark]{--cheatsheets-tr-border:#3b4048;--cheatsheets-tr-hover-bg:#323740;--cheatsheets-status-1xx-bg:#324158;--cheatsheets-status-2xx-bg:#064e3b;--cheatsheets-status-3xx-bg:#1e3a8a;--cheatsheets-status-4xx-bg:#78470f;--cheatsheets-status-5xx-bg:#7f1d1d}:root{--college-service-bg:linear-gradient(to bottom right,#50a3a2,#53e3a6);--college-service-header-h1:linear-gradient(90deg,#fff,#fff);--college-service-header-before:#ddd;--college-service-header-after:#ddd;--college-circle-bg:-webkit-radial-gradient(bottom right,#5bf3b4,#57dba4);--college-service-li-bg:#75cdb6;--college-service-li-i-bg:#51bbba;--college-service-li-i-text:#fff;--college-service-li-i-border:#fff;--college-service-li-a-hover:#6ebfaa;--college-square-bg:#57c2b2;--college-triangle-border-width:150px;--college-block-bg:#6ad2b1;--college-list-bg:linear-gradient(180deg,#93e0c2,#fff);--college-list-h2-text:#5a9980}html[data-theme=dark]{--college-service-bg:linear-gradient(#181b21,#181b21);--college-service-header-h1:linear-gradient(90deg,#1ca5ed,#12d2af);--college-service-header-before:#1ca5ed;--college-service-header-after:#12d2af;--college-service-li-bg:#222730;--college-service-li-i-bg:#323740;--college-service-li-i-text:#3ed3da;--college-service-li-i-border:#3ed3da;--college-service-li-a-hover:#222730;--college-circle-bg:none;--college-square-bg:none;--college-triangle-border-width:0;--college-block-bg:#181b21;--college-list-bg:#181b21;--college-list-h2-text:#88cdd6}:root{--compiler-bg:#f4f7f9;--compiler-top-bg:linear-gradient(#e9f3f1,#f4f7f9);--compiler-header-bg:#eaf4f7;--compiler-select-border:#b6dad0;--compiler-icon-color:#69897f;--compiler-icon-border:#98c5ba;--compiler-icon-hover:#d7f0eb;--compiler-h1-bg:linear-gradient(90deg,#1a9edb,#0fb092);--compiler-input-bg:#fff;--compiler-output-bg:#fff;--compiler-gutter-bg:#fff;--compiler-gutter-border:#fff;--compiler-gutter-current:#e5f2fe;--compiler-select-bg:#fff;--compiler-option-span-text:#272c30;--compiler-option-span-bg:#eff3fc;--compiler-option-a-text:#505a63;--compiler-option-current-text:#0b876c;--compiler-option-current-bg:#eef9f4;--compiler-search-border:#aac8ba;--copy-button-bg:#e9f8f5;--copy-button-text:#72c7ab;--copy-button-border:#a8ecd6;--copy-button-hover-bg:#daf4ef;--copy-button-hover-text:#55b394;--copy-button-hover-border:#8bd8c0;--compiler-list-item-bg:#fff;--compiler-list-item-border:#d7eceb;--compiler-list-item-text:#0b876c;--compiler-list-item-icon-text:#2eb396;--compiler-list-hot-bg:#eaf9f6;--compiler-list-hot-text:#0b876c;--compiler-list-hot-icon-text:#2eb396}html[data-theme=dark]{--compiler-bg:linear-gradient(90deg,#21252b,#21252b);--compiler-top-bg:linear-gradient(#21252b,#21252b);--compiler-header-bg:#1d2126;--compiler-select-border:#485063;--compiler-icon-color:#adbbc7;--compiler-icon-border:#485063;--compiler-icon-hover:#282c34;--compiler-h1-bg:linear-gradient(90deg,#65c0f9,#71fbb1);--compiler-input-bg:#282c34;--compiler-output-bg:#21252b;--compiler-gutter-bg:#292c33;--compiler-gutter-border:#292c33;--compiler-gutter-current:#2d3139;--compiler-select-bg:#282c34;--compiler-option-span-text:#dfe6ed;--compiler-option-span-bg:#323740;--compiler-option-a-text:#adbbc7;--compiler-option-current-text:#adbbc7;--compiler-option-current-bg:#323740;--compiler-search-border:#485063;--copy-button-bg:#181b21;--copy-button-text:silver;--copy-button-border:#292c33;--copy-button-hover-bg:#000;--copy-button-hover-text:#fff;--copy-button-hover-border:#485063;--compiler-list-item-bg:#323740;--compiler-list-item-border:#485063;--compiler-list-item-text:#adbbc7;--compiler-list-item-icon-text:#adbbc7;--compiler-list-hot-bg:#323740;--compiler-list-hot-text:#32c8b9;--compiler-list-hot-icon-text:#32c8b9}:root{--course-left-try-bg:#fceeea;--course-left-try-text:#f45252;--course-left-lock-text:silver;--course-discount-price-text:#26a75e;--sql-table-thead-bg:#edf3f9;--course-article-status-unlearned:#c7ccd1;--course-article-status-learning:#d6dbe1;--course-article-status-learned:#24daa3;--course-article-status-unlearned-line:#e0e5e9;--course-article-status-learned-line:#0ee6ac;--course-article-btn-complete-bg:#25caa9;--course-article-btn-complete-bg-hover:#16bb9a;--course-congrats-dialog-btn-bg:#25caa9;--course-congrats-dialog-btn-bg-hover:#16bb9a;--course-promotion-text:#ff4d4f;--course-promotion-bg:#fff1f0;--course-promotion-border:#ffccc7}html[data-theme=dark]{--course-left-try-bg:#19b694;--course-left-try-text:#fff;--course-left-lock-text:#555f75;--course-discount-price-text:#32c8b9;--sql-table-thead-bg:#323740;--course-article-status-unlearned:#69727c;--course-article-status-learning:#69727c;--course-article-status-learned:#0fca98;--course-article-status-unlearned-line:#6c7681;--course-article-status-learned-line:#09b486;--course-article-btn-complete-bg:#1ab798;--course-article-btn-complete-bg-hover:#0ea587;--course-congrats-dialog-btn-bg:#1ab798;--course-congrats-dialog-btn-bg-hover:#0ea587;--course-promotion-text:#fdb779;--course-promotion-bg:#43372b;--course-promotion-border:#8a6443}:root{--courseintro-discount-price-text:#26a75e;--courseintro-promotion-text:#ff4d4f;--courseintro-promotion-bg:#fff1f0;--courseintro-promotion-border:#ffccc7;--courseintro-menu-try-bg:#fff1f0;--courseintro-menu-try-text:#f73a3d;--courseintro-catalog-try-bg:#fceeea;--courseintro-catalog-try-text:#ff4d4f;--courseintro-detail-h2-bg:linear-gradient(90deg,#188149,#1380ba);--courseintro-menu-h2-bg:linear-gradient(90deg,#0e8c49,#1087c8);--courseintro-menu-h3-bg:#eff3fc;--courseintro-menu-current-bg:#e3f7ee;--courseintro-part-line-bg:#b0e7df;--courseintro-column-header-bg:linear-gradient(180deg,#75d1b8 0%,#fff)}html[data-theme=dark]{--courseintro-discount-price-text:#32c8b9;--courseintro-promotion-text:#fdb779;--courseintro-promotion-bg:#43372b;--courseintro-promotion-border:#8a6443;--courseintro-menu-try-bg:#33453c;--courseintro-menu-try-text:#32c8b9;--courseintro-catalog-try-bg:#19b694;--courseintro-catalog-try-text:#fff;--courseintro-detail-h2-bg:linear-gradient(90deg,#48aae7,#34d07d);--courseintro-menu-h2-bg:linear-gradient(90deg,#48aae7,#34d07d);--courseintro-menu-h3-bg:#323740;--courseintro-menu-current-bg:#323740;--courseintro-part-line-bg:#0d8070;--courseintro-column-header-bg:linear-gradient(180deg,#1a483c 0%,#23272f)}:root{--mobile-login-header-text:#0b876c;--mobile-login-sms-btn-text:#0b9c7d;--mobile-login-sms-btn-text-hover:#068167}html[data-theme=dark]{--mobile-login-header-text:#0cdeb1;--mobile-login-sms-btn-text:#19b694;--mobile-login-sms-btn-text-hover:#0cdeb1}:root{--error-body-bg:linear-gradient(90deg,#fff,#fff)}html[data-theme=dark]{--error-body-bg:linear-gradient(90deg,#21252b,#21252b)}:root{--home-tutorials-bg:linear-gradient(#159f94,#cbe2e0);--home-tutorials-header-bg:linear-gradient(90deg,#48aae7,#34ce7c);--home-tutorials-leftline-bg:linear-gradient(270deg,#ddd,transparent);--home-tutorials-rightline-bg:linear-gradient(90deg,#ddd,transparent);--home-tutorials-svg:url(../imgs/sites/icons/bg-wave-light1.svg);--home-tutorials-column-bg:#fff;--home-tutorials-column-header-bg:#cef2eb;--home-tutorials-column-border:#04af2f;--home-tools-bg:#fff;--home-tools-item-bg:#fff;--home-tools-item-text:#0b876c;--home-tools-item-border:#e3eaf1;--home-tools-hot-bg:#eaf9f6;--home-tools-hot-text:#0b876c;--home-tools-hot-border:#e3eaf1;--home-tools-hot-boxshadow:0 1px 5px 0 #add5cb;--home-features-bg:linear-gradient(180deg,#e0f3f1,#fff);--home-features-svg:url(../imgs/sites/icons/bg-wave-light2.svg);--home-features-a-text:#19b694;--home-features-a-bg:linear-gradient(90deg,#19b694,#19b694)}html[data-theme=dark]{--home-tutorials-bg:linear-gradient(#181b21,#181b21);--home-tutorials-header-bg:linear-gradient(90deg,#2e93d2,#23b868);--home-tutorials-leftline-bg:linear-gradient(270deg,#adbbc7,transparent);--home-tutorials-rightline-bg:linear-gradient(90deg,#adbbc7,transparent);--home-tutorials-svg:url(../imgs/sites/icons/bg-wave-dark1.svg);--home-tutorials-column-bg:#222730;--home-tutorials-column-header-bg:#323740;--home-tutorials-column-border:#3b4048;--home-tools-bg:#222730;--home-tools-item-bg:#323740;--home-tools-item-text:#adbbc7;--home-tools-item-border:#485063;--home-tools-hot-bg:#33393f;--home-tools-hot-text:#32c8b9;--home-tools-hot-border:#3b4048;--home-tools-hot-boxshadow:none;--home-features-bg:#181b21;--home-features-svg:url(../imgs/sites/icons/bg-wave-dark2.svg);--home-features-a-text:#7fc1f0;--home-features-a-bg:linear-gradient(90deg,#7fc1f0,#7fc1f0)}:root{--html-output-bg:#fff;--html-output-header:#f2f6f8;--html-iframe-bg:#fff}html[data-theme=dark]{--html-output-bg:#292c33;--html-output-header:#1e2126;--html-iframe-bg:#f2f2f2}:root{--topnav-bg:linear-gradient(90deg,#32b17a,#00a1ba,#3ba38d,#36c486);--topnav-navigation-bg:#4a5062;--layout-search-input-bg:#e3f7ee;--layout-search-input-focus:#e3f7ee;--layout-search-icon-hover:#cef2eb;--layout-search-active-bg:linear-gradient(90deg,#32b17a,#00a1ba,#3ba38d,#36c486);--layout-login-button-bg:#0c9678;--layout-login-button-bg-hover:#0a7d64;--layout-login-button-border:#fff;--layout-login-img-border-hover:#0b876c;--layout-login-input-bg:#eff4f8;--layout-login-input-placeholder:#b4b6bc;--layout-login-input-eye-text:#b4b6bc;--layout-login-captcha-input-bg:#fff;--layout-login-captcha-img-bg:#e3f4f0;--layout-login-error-text:crimson;--layout-user-box-shadow:rgba(208,215,222,.5) 0px 0px 0px 1px,rgba(66,74,83,.04) 0px 6px 12px -3px,rgba(66,74,83,.12) 0px 6px 18px 0px;--layout-user-content-bg:#f2f9f8;--layout-user-border:transparent;--layout-user-border-size:0;--layout-user-a-bg:#c8ece4;--layout-user-a-border:#78cbb9;--layout-user-a-text:#0b876c;--layout-user-a-text-hover:#0b876c;--layout-user-a-bg-hover:#9de1d4;--layout-user-notice-bg:linear-gradient(60deg,#eaf0f8,#f9f4f0 70%,#eaf0f8);--layout-user-notice-border:#c0c8d1;--layout-user-h3-bg:linear-gradient(90deg,#48aae7,#34d07d);--dropdown-tools-actions-bg:#fff;--dropdown-tools-actions-hover-bg:#e9ebed;--dropdown-tools-actions-hover-text:#000;--dropdown-tools-search-border:transparent;--subnav-bg:#defced;--subnav-border:#11cfa5;--subnav-current-text:#0b876c;--subnav-current-border:#0b876c;--subnav-current-bg:#cef2eb;--subnav-menu-bg-hover:#0b876c;--subnav-menu-text-hover:#fff;--topnav-more-bg:#4a5062;--topnav-more-border:#4a5062;--mbnav-border-top:#485063;--mbnav-border-bottom:#68738f;--footer-bg:#485063;--backtotop-inner-border:#aef7d5}html[data-theme=dark]{--topnav-bg:linear-gradient(90deg,#181b21,#181b21);--topnav-navigation-bg:#222730;--layout-search-input-bg:#222730;--layout-search-input-focus:#323740;--layout-search-icon-hover:#404248;--layout-search-active-bg:linear-gradient(90deg,#25292f,#25292f);--layout-login-button-bg:#282c33;--layout-login-button-bg-hover:#404248;--layout-login-button-border:#25292f;--layout-login-input-bg:#323740;--layout-login-input-placeholder:#646b73;--layout-login-input-eye-text:#848d97;--layout-login-captcha-input-bg:#323740;--layout-login-captcha-img-bg:#e6e6e6;--layout-login-error-text:#ff341d;--layout-user-box-shadow:none;--layout-user-border:#3b4048;--layout-user-border-size:1px;--layout-user-content-bg:#222730;--layout-user-a-bg:#323740;--layout-user-a-bg-hover:#323740;--layout-user-a-border:#3b4048;--layout-user-a-text:#adbbc7;--layout-user-a-text-hover:#dfe6ed;--layout-user-notice-border:#3b4048;--layout-user-h3-bg:linear-gradient(90deg,#529de0,#68bfb5);--layout-user-notice-bg:#323740;--dropdown-tools-actions-bg:#343741;--dropdown-tools-actions-hover-bg:#343741;--dropdown-tools-actions-hover-text:#3ed3da;--dropdown-tools-search-border:#485063;--subnav-bg:#222730;--subnav-border:#363d45;--subnav-current-text:#adbbc7;--subnav-current-border:#586270;--subnav-current-bg:#33363c;--subnav-menu-bg-hover:#52555d;--subnav-menu-text-hover:#fff;--topnav-more-bg:#222730;--topnav-more-border:#485063;--mbnav-border-top:#25292f;--mbnav-border-bottom:#30363d;--footer-bg:#222730;--backtotop-inner-border:#485063}:root{--markdown-body-border:#e5e5e5;--markdown-icon-color:#757575;--markdown-icon-hover-bg:#d2e6ec;--markdown-icon-hover-color:#757575;--markdown-textarea-placeholder:#757575;--markdown-dropdown-border:#ebeef5;--markdown-dropdown-hover-bg:#e0e2e6;--markdown-dropdown-hover-color:#757575}html[data-theme=dark]{--markdown-body-border:#212429;--markdown-icon-color:#adbbc7;--markdown-icon-hover-bg:#adbbc7;--markdown-icon-hover-color:#22252a;--markdown-textarea-placeholder:#adbbc7;--markdown-dropdown-border:#485063;--markdown-dropdown-hover-bg:#d2dee7;--markdown-dropdown-hover-color:#000}:root{--purchase-bg:#c7e6df;--purchase-discount-price-text:#26a75e;--purchase-price-difference-text:#f64242;--purchase-wechat-bg:#f1fcf5;--purchase-wechat-text:#0ba352}html[data-theme=dark]{--purchase-bg:#181b21;--purchase-discount-price-text:#26e5d2;--purchase-price-difference-text:#42aef6;--purchase-wechat-bg:#33393f;--purchase-wechat-text:#32c8b9}:root{--redeem-bg:#c7e6df;--redeem-button-bg:#0c9678;--redeem-button-bg-hover:#0a7d64;--redeem-button-border:#fff;--redeem-img-border-hover:#0b876c;--redeem-input-bg:#eff4f8;--redeem-input-placeholder:#b4b6bc;--redeem-input-eye-text:#b4b6bc;--redeem-captcha-input-bg:#fff;--redeem-captcha-img-bg:#e3f4f0;--redeem-error-text:crimson}html[data-theme=dark]{--redeem-bg:#181b21;--redeem-button-bg:#282c33;--redeem-button-bg-hover:#404248;--redeem-button-border:#25292f;--redeem-input-bg:#4a505c;--redeem-input-placeholder:#848d97;--redeem-input-eye-text:#848d97;--redeem-captcha-input-bg:#4b505b;--redeem-captcha-img-bg:#e6e6e6;--redeem-error-text:#d93523}:root{--references-bg:linear-gradient(#dff8f1,#f4f7f9);--references-h1-bg:linear-gradient(90deg,#188149,#1380ba);--li-before-bg1:linear-gradient(180deg,transparent 20%,#f5c5d7);--li-before-bg2:linear-gradient(180deg,transparent 20%,#b5e76c);--li-before-bg3:linear-gradient(180deg,transparent 20%,#9dcdf7);--li-before-bg4:linear-gradient(180deg,transparent 20%,#f5cd9d);--li-before-bg5:linear-gradient(180deg,transparent 20%,#a3f2ef);--li-before-bg6:linear-gradient(180deg,transparent 20%,#6ee7b7);--li-before-bg7:linear-gradient(180deg,transparent 20%,#ddb8fa);--li-before-bg8:linear-gradient(180deg,transparent 20%,#ffcdcd)}html[data-theme=dark]{--references-bg:linear-gradient(90deg,#181b21,#181b21);--references-h1-bg:linear-gradient(90deg,#65c0f9,#34d07d);--li-before-bg1:none;--li-before-bg2:none;--li-before-bg3:none;--li-before-bg4:none;--li-before-bg5:none;--li-before-bg6:none;--li-before-bg7:none;--li-before-bg8:none}:root{--search-bg:#f4f7f9;--search-h2-text-hover:#0ea484;--search-a-bg:linear-gradient(90deg,#0ea484,#0ea484);--search-p-text:#3c4045;--search-li-hover-bg:#f4f6f9;--search-strong-text:crimson;--search-input-text:#456;--pager-button-bg:#47ba9f}html[data-theme=dark]{--search-bg:#181b21;--search-h2-text-hover:#3ed3da;--search-a-bg:linear-gradient(90deg,#0ea484,#0ea484);--search-p-text:#adbbc7;--search-li-hover-bg:#323740;--search-strong-text:#7fc1f0;--search-input-text:#dfe6ed;--pager-button-bg:#485063}:root{--sql-table-text:#555;--sql-thead-bg:#f6f7fc;--sql-output-bg:#fff;--sql-output-header:#f2f6f8}html[data-theme=dark]{--sql-table-text:#555;--sql-thead-bg:#323740;--sql-output-bg:#292c33;--sql-output-header:#1e2126}:root{--tutorial-bg:#f4f7f9;--tutorial-left-h2-bg:linear-gradient(90deg,#32b17a,#36c486,#00a1ba);--tutorial-left-h3-bg:#eff3fc;--tutorial-left-border:#eff3fc;--tutorial-left-current-text:#0b876c;--tutorial-left-current-bg:#e3f7ee;--tutorial-left-arrow-text:#a6a6bb;--tutorial-left-new-bg:url(../imgs/sites/icons/new2.svg);--tutorial-left-search-border:#cfe7dc;--right-column-header-bg:linear-gradient(180deg,#75d1b8 0%,#fff);--right-column-header-text:#0b876c;--right-advise-bg:linear-gradient(90deg,#48aae7,#34d07d);--right-resources-bg:linear-gradient(90deg,#48aae7,#34d07d)}html[data-theme=dark]{--tutorial-bg:#181b21;--tutorial-left-h2-bg:#323740;--tutorial-left-h3-bg:#323740;--tutorial-left-border:#485063;--tutorial-left-current-text:#5cd2af;--tutorial-left-current-bg:#323740;--tutorial-left-arrow-text:#adbbc7;--tutorial-left-new-bg:url(../imgs/sites/icons/new1.svg);--tutorial-left-search-border:transparent;--right-column-header-bg:#222730;--right-column-header-text:#adbbc7;--right-advise-bg:#222730;--right-resources-bg:#222730}:root{--user-left-header-bg:linear-gradient(90deg,#48aae7,#34d07d);--user-left-header-border:#fff;--user-name-text:#0b876c;--user-intro-text:#188149;--user-createdAt-bg:#f1fcf5;--user-createdAt-text:#0ba352;--user-right-header-bg:linear-gradient(90deg,#48aae7,#34d07d);--user-right-header-a-bg:hsla(0,0%,100%,.25);--user-course-vip-bg:linear-gradient(45deg,#ffdf6f,#ffeabc);--user-course-vip-text:#4e2d03;--user-course-cover-bg:linear-gradient(#d9fbf5,#fff);--user-course-h2-text:#52565a;--user-course-h2-text-hover:#0ba37d;--user-course-progress-learning-text:#17af7c;--user-course-progress-completed-text:#17af7c;--user-course-progress-bar-track:#e6edf1;--user-course-progress-bar-fill:#5dd997;--user-order-icon-text:#f1607d;--user-order-price-text:#f64242;--user-order-countdown-text:#ff4d4f;--user-order-countdown-bg:#fff1f0;--user-order-countdown-border:#ffa39e;--user-order-btn-pay-bg:#f75c5c;--user-setting-btn-text:#ff4d4f;--user-setting-btn-bg:#ff4d4f;--user-setting-btn-border:#ff4d4f}html[data-theme=dark]{--user-left-header-bg:linear-gradient(90deg,#529de0,#68bfb5);--user-left-header-border:#485063;--user-name-text:#dfe6ed;--user-intro-text:#adbbc7;--user-createdAt-bg:#33393f;--user-createdAt-text:#32c8b9;--user-right-header-bg:#222730;--user-right-header-a-bg:#323740;--user-course-vip-bg:linear-gradient(45deg,#ffc552,#ffdd9a);--user-course-vip-text:#4e2d03;--user-course-cover-bg:linear-gradient(#323740,#323740);--user-course-h2-text:#adbbc7;--user-course-h2-text-hover:#17c199;--user-course-progress-learning-text:#17c199;--user-course-progress-completed-text:#17c199;--user-course-progress-bar-track:#555f75;--user-course-progress-bar-fill:#54d38f;--user-order-icon-text:#32c8b9;--user-order-price-text:#32c8b9;--user-order-countdown-text:#fdb779;--user-order-countdown-bg:#43372b;--user-order-countdown-border:#8a6443;--user-order-btn-pay-bg:#ff8c27;--user-setting-btn-text:#ff7f73;--user-setting-btn-bg:#ff7f73;--user-setting-btn-border:#ff7f73}.custom-message{border-radius:6px;box-shadow:0 4px 12px #0000000d;flex-direction:row!important;flex-wrap:nowrap!important;justify-content:flex-start!important;max-width:420px;min-width:100px;padding:12px 15px;pointer-events:auto;width:-moz-fit-content!important;width:fit-content!important;will-change:transform,opacity}.custom-message,.custom-message .icon-wrapper{align-items:center!important;display:flex!important}.custom-message .icon-wrapper{flex-shrink:0!important;justify-content:center!important;margin:0 8px 0 0!important;padding:0!important}.custom-message .icon-wrapper .iconfont{display:inline-flex!important;font-size:16px!important;line-height:1!important;margin:0!important;padding:0!important;vertical-align:middle!important}.custom-message .text{display:inline-block!important;font-size:14px;line-height:1.4;margin:0!important;padding:0!important;word-break:break-word}.custom-message.info{background-color:#f0f9ff;border:1px solid #bae6fd}.custom-message.info .iconfont{color:#0ea5e9!important}.custom-message.info .text{color:#075985}.custom-message.success{background-color:#e9fff3;border:1px solid #a7f3d0}.custom-message.success .iconfont{color:#16c467!important}.custom-message.success .text{color:#079349}.custom-message.warning{background-color:#fff7eb;border:1px solid #f5dab0}.custom-message.warning .iconfont{color:#f59e0b!important}.custom-message.warning .text{color:#df5b09}.custom-message.error{background-color:#fbf1f0;border:1px solid #fecaca}.custom-message.error .iconfont{color:#f55050!important}.custom-message.error .text{color:#e24e46}.message-fade-enter-active{transition:all .4s cubic-bezier(.175,.885,.32,1.275)}.message-fade-leave-active{transition:all .3s cubic-bezier(.4,0,.2,1)}.message-fade-enter-from{opacity:0;transform:translateY(-30px) scale(.9)}.message-fade-leave-to{opacity:0;transform:translateY(-20px) scale(.95)}body,html{background:var(--error-body-bg)}.error,.error>.error-header{align-items:center;display:flex;flex-direction:column}.error>.error-header{margin-top:100px;text-align:center}.error>.error-header>h1{-webkit-background-clip:text;background-image:linear-gradient(90deg,#48aae7,#34d07d);display:inline-block;-webkit-text-fill-color:transparent}.error>.error-header>h1>i{font-size:150px}.error>.error-header>h1>span{font-size:130px}.error>.btns{margin-top:50px}.error>.btns>button{background-image:linear-gradient(90deg,#48aae7,#34d07d);border:none;border-radius:3px;color:#fff;cursor:pointer;font-size:15px;height:36px;line-height:36px;outline:none;overflow:hidden;position:relative;text-align:center;width:100px}.error>.btns>button:before{background-color:#ffffff4d;content:"";height:100%;left:-4.5em;position:absolute;top:0;transform:skew(-45deg) translate(0);width:3em}.error>.btns>button:hover:before{transform:skew(-45deg) translate(250px);transition:all .5s ease-in-out}.error>.btns>.back-to-home{margin-left:30px}.error>.error-info{line-height:28px;margin-top:40px;padding:0 20px}.error>.error-info>p{text-indent:32px}.error>.error-info>p>span{display:none}.error>.error-info>ul{list-style-type:circle;padding-left:32px}@media screen and (min-width:576px){.error>.error-header>h1>i{font-size:220px}.error>.error-header>h1>span{font-size:150px}.error>.btns>.back-to-home{margin-left:50px}.error>.error-info{margin-top:50px;padding:0;width:560px}.error>.error-info>p>span{display:inline}}
