:root{--paper:#fff;--surface:#fff;--ink:#182333;--muted:#637082;--line:#e8edf2;--blue:#245bb2;--orange:#a45320;--space:24px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#fff;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:#fff}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}button,input,textarea,select{font:inherit}button,a,input,textarea,select{touch-action:manipulation}button{cursor:pointer}img{max-width:100%;vertical-align:middle}input,textarea,select{border:1px solid #d7dfe8;border-radius:4px;padding:10px 12px;background:#fff;color:var(--ink);max-width:100%}textarea{resize:vertical}button{border:1px solid #d7dfe8;background:#fff;color:var(--ink);border-radius:4px;padding:8px 12px}:focus-visible{outline:2px solid var(--blue);outline-offset:4px}.shell{width:min(1184px,calc(100% - 40px));margin:auto}.site-header{border-bottom:1px solid var(--line);background:#fff}.header-row{display:flex;align-items:center;gap:32px;min-height:92px}.brand{display:inline-flex;flex:none;align-items:center}.brand img{display:block;width:216px;height:auto;object-fit:contain}.main-nav{display:flex;gap:26px;font-size:15px;font-weight:600}.header-search{display:flex;margin-left:auto;gap:0}.header-search input{width:184px;font-size:12px;border-right:0;border-radius:4px 0 0 4px;padding:9px}.header-search button{font-size:12px;border-radius:0 4px 4px 0;padding:9px}.menu-toggle{display:none}.region-nav{display:flex;gap:25px;align-items:center;min-height:44px;font-size:13px}.region-nav>span{color:var(--muted);font-size:12px}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:42px;padding-top:30px;padding-bottom:55px}.content-grid>main{min-width:0}.feed-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:0 0 14px}.feed-heading h1{margin:0;font-size:23px;letter-spacing:-.6px}.feed-heading h1:before{content:"";display:inline-block;width:4px;height:20px;background:var(--blue);margin-right:10px;vertical-align:-2px}.feed-tabs{display:flex;gap:23px;font-size:13px;color:var(--muted)}.feed-tabs .selected{color:var(--blue);font-weight:600}.article-row{display:grid;grid-template-columns:160px minmax(0,1fr);gap:22px;padding:26px 0}.article-thumb{display:flex;align-items:center;justify-content:center;overflow:hidden;background:#fff;align-self:center;height:102px}.article-thumb img{width:100%;height:100%;object-fit:contain;padding:15px}.row-copy h2{font-size:19px;line-height:1.55;letter-spacing:-.25px;font-weight:650;margin:0 0 9px}.row-copy>p{margin:0 0 14px;font-size:14px;line-height:1.8;color:#606d7d;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.row-meta{display:flex;align-items:center;gap:11px;flex-wrap:wrap;font-size:12px;color:#647284}.row-meta a{color:#59779e}.pinned{font-size:10px;color:var(--orange);padding:2px 0;vertical-align:2px;margin-right:8px;font-weight:500}.side-section{padding:0;margin:0 0 40px}.side-section h2{font-size:17px;line-height:1.5;margin:0 0 17px;font-weight:650}.section-top{display:flex;align-items:center;justify-content:space-between}.section-top>a{font-size:12px;color:var(--muted);margin-bottom:17px}.rank-list{list-style:none;padding:0;margin:0;counter-reset:rank}.rank-list li{display:flex;gap:12px;margin-top:13px;line-height:1.7;font-size:13px}.rank-list li>span{color:#64758b;font-size:12px;min-width:13px}.rank-list li:nth-child(-n+3)>span{color:var(--blue);font-weight:700}.provider-links{display:grid;grid-template-columns:1fr 1fr;gap:14px 20px;font-size:13px}.side-links{padding:0;list-style:none;margin:0}.side-links li{font-size:13px;line-height:1.75;margin:13px 0}.buying-note p{font-size:13px;line-height:1.9;color:#657383}.buying-note>a{font-size:12px;color:var(--blue)}.pagination{display:flex;gap:20px;align-items:center;padding-top:28px;font-size:14px}.pagination>a{border:1px solid var(--line);padding:9px 16px;border-radius:3px}.feed-end{display:flex;justify-content:center;gap:18px;color:#617897;font-size:13px;margin:30px 0 0}.site-footer{border-top:1px solid var(--line);padding:32px 0;background:#fff}.footer-row{display:flex;align-items:center;justify-content:space-between;gap:24px}.footer-name{font-size:18px;letter-spacing:-.5px;font-weight:750;color:#27476f}.footer-row p{font-size:12px;color:var(--muted);margin:7px 0}.footer-row nav{display:flex;gap:22px;font-size:12px;color:#657383}.ad-strip{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:22px}.ad-strip a{min-width:0}.ad-strip img{object-fit:contain;width:100%;height:auto;border-radius:3px}.breadcrumbs{display:flex;gap:12px;font-size:12px;color:var(--muted);margin:0 0 23px}.article-header{padding-bottom:12px;margin-bottom:28px}.article-header h1{font-size:31px;line-height:1.5;letter-spacing:-.7px;margin:0 0 15px}.article-summary{font-size:16px;line-height:1.9;color:#657383;margin:0 0 16px}.prose{font-size:18px;line-height:1.85;overflow-wrap:anywhere}.prose p{margin:0 0 22px}.prose h2{font-size:24px;line-height:1.5;margin:38px 0 18px;letter-spacing:-.4px;scroll-margin-top:24px}.prose h3{font-size:20px;margin:28px 0 12px;scroll-margin-top:24px}.prose ul,.prose ol{padding-left:1.45em;margin:0 0 23px}.prose li{margin:7px 0}.prose a{color:var(--blue);text-decoration:underline;text-decoration-color:#bacce4;text-underline-offset:4px}.prose blockquote{border-left:3px solid #abc2df;padding:3px 0 3px 18px;margin:24px 0;color:#657383;background:#fff}.prose blockquote p:last-child{margin-bottom:0}.prose code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.85em;padding:2px 4px;background:#fff}.prose pre{overflow:auto;border:1px solid #dce4ed;border-radius:4px;padding:18px;background:#fff;font-size:14px;line-height:1.7;margin:24px 0}.prose pre code{border:0;padding:0;white-space:pre}.table-scroll{overflow-x:auto;max-width:100%;margin:22px 0;background:#fff}table{border-collapse:collapse;min-width:100%;font-size:14px;line-height:1.7}th,td{padding:13px 15px;border-bottom:1px solid var(--line);text-align:left;min-width:125px;background:#fff}th{font-weight:650;color:#354b67}tr:last-child td{border-bottom:0}.article-toc{position:sticky;top:24px}.article-toc ol{list-style:none;padding:0;margin:0;font-size:13px;line-height:1.75}.article-toc li{margin:12px 0}.purchase{display:flex;gap:24px;align-items:center;justify-content:space-between;border-left:3px solid var(--blue);padding:12px 0 12px 22px;margin:34px 0;background:#fff;font-size:14px}.purchase p{font-size:13px;color:#6b798a;margin:7px 0 12px}.purchase code{font-size:13px}.button{display:inline-block;background:var(--blue);color:#fff!important;border:1px solid var(--blue);padding:11px 17px;border-radius:3px;font-size:14px;font-weight:600;white-space:nowrap}.button:hover{background:#194887}.copy-code{border:0;color:var(--blue);font-size:12px;padding:3px 5px}.copy-status{font-size:12px;color:#416f52}.related{padding-top:12px;margin-top:40px}.related h2{font-size:20px}.related ul{list-style:none;padding:0;line-height:2;font-size:15px}.page-title{font-size:27px;margin:0 0 24px}.search-form{display:flex;gap:12px}.search-form input{flex:1;min-width:0}.search-count{font-size:13px;color:var(--muted);margin:24px 0}.login-shell{width:min(440px,calc(100% - 40px));margin:75px auto}.login-shell h1{font-size:26px}.login-shell label{display:block;margin:20px 0}.login-shell input{display:block;width:100%;margin-top:9px}.preview-note,.notice{border:1px solid #b5c9e5;padding:12px 16px;color:#305689;font-size:14px;background:#fff}.skip-link{position:fixed;top:-100px;left:12px;background:#fff;padding:12px;z-index:20}.skip-link:focus{top:12px}.plan-section h2{font-size:23px}.admin-layout{display:grid;grid-template-columns:180px minmax(0,1fr);gap:36px;margin:30px auto;min-height:75vh}.admin-nav{display:flex;flex-direction:column;gap:16px;font-size:14px;border-right:1px solid var(--line)}.admin-nav h2{font-size:18px;margin:0 0 12px}.admin-nav form{margin-top:20px}.admin-main{min-width:0}.admin-main h1{font-size:25px;margin-top:0}.admin-main label{display:block;font-size:14px;margin:15px 0}.admin-main label>input:not([type=checkbox]),.admin-main label>textarea,.admin-main label>select{display:block;width:100%;margin-top:8px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}.form-wide{grid-column:1/-1}.editor{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:14px;line-height:1.7;min-height:420px}.admin-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:22px 0}.admin-actions form{margin:0}.admin-table{overflow:auto}.admin-table table{font-size:13px}.admin-table td{min-width:110px}.admin-table .content-title{min-width:250px}.admin-help{font-size:13px;color:var(--muted);line-height:1.8}.review-checks{display:flex;gap:25px;flex-wrap:wrap}.errors{font-size:13px;color:#a34b2b;border:1px solid #e5c7b7;padding:18px 35px}.media-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.media-list figure{margin:0;overflow-wrap:anywhere;font-size:12px}.media-list img{height:130px;width:100%;object-fit:contain;border:1px solid var(--line)}.toolbar{display:flex;gap:7px;flex-wrap:wrap}.toolbar button{font-size:12px;padding:5px 9px}
@media(max-width:1100px){.header-row{gap:22px}.main-nav{gap:20px}.header-search input{width:125px}.content-grid{grid-template-columns:minmax(0,1fr) 260px;gap:28px}.region-nav{gap:20px}.row-copy h2{font-size:18px}.article-row{gap:18px;grid-template-columns:145px minmax(0,1fr)}.article-thumb{height:96px}.footer-row nav{gap:15px}}
@media(max-width:900px){.header-search{display:none}.header-row{justify-content:space-between}.content-grid{grid-template-columns:minmax(0,1fr) 235px;gap:24px}.region-nav{flex-wrap:wrap;gap:12px 20px;padding:12px 0}.article-row{grid-template-columns:120px minmax(0,1fr)}.article-thumb{height:85px}.row-copy h2{font-size:17px}.row-copy>p{font-size:13px;margin-bottom:8px}.feed-tabs{gap:15px}.purchase{align-items:flex-start;flex-direction:column}.footer-row{flex-wrap:wrap}}
@media(max-width:767px){.shell{width:calc(100% - 32px)}.header-row{min-height:76px;flex-wrap:wrap;gap:0}.brand img{width:192px;height:auto}.menu-toggle{display:block;font-size:12px;padding:6px 10px}.main-nav{display:none;width:100%;padding:12px 0 20px;gap:16px;flex-wrap:wrap;font-size:14px}.main-nav.open{display:flex}.region-nav>span{display:none}.region-nav{font-size:12px;gap:13px 19px;line-height:1.3;padding:13px 0}.content-grid{display:block;padding-top:24px;padding-bottom:36px}.sidebar{display:none}.feed-heading{padding-bottom:12px}.feed-heading h1{font-size:20px}.feed-heading h1:before{height:17px;vertical-align:-1px;margin-right:8px}.feed-tabs{font-size:12px;gap:17px}.article-row{grid-template-columns:100px minmax(0,1fr);gap:14px;padding:22px 0}.article-thumb{height:78px;align-self:start;margin-top:3px}.article-thumb img{padding:9px}.row-copy h2{font-size:16px;line-height:1.6;margin-bottom:7px}.row-copy>p{font-size:12px;line-height:1.65;margin-bottom:9px;-webkit-line-clamp:2}.row-meta{font-size:10px;gap:8px}.pinned{font-size:9px;vertical-align:1px;margin-right:5px}.footer-row{display:block}.footer-row nav{margin:22px 0;gap:18px;flex-wrap:wrap}.site-footer{padding:25px 0}.article-header h1{font-size:25px;line-height:1.55}.article-summary{font-size:15px;line-height:1.85}.prose{font-size:17px;line-height:1.85}.prose h2{font-size:22px;margin-top:30px}.prose h3{font-size:19px}.prose pre{padding:14px;font-size:12px}.table-scroll{margin:20px 0}th,td{padding:11px;min-width:125px;font-size:13px}.breadcrumbs{margin-bottom:18px}.purchase{padding:10px 0 10px 18px;margin:28px 0}.related{margin-top:28px}.related li{margin:10px 0;line-height:1.7}.ad-strip{gap:10px;grid-template-columns:1fr;margin-top:16px}.admin-layout{display:block}.admin-nav{border:0;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:24px;flex-direction:row;flex-wrap:wrap;gap:15px}.admin-nav h2{width:100%;margin:0}.admin-nav form{margin:0}.form-grid{display:block}.media-list{grid-template-columns:1fr 1fr}.feed-end{font-size:12px;gap:12px}}
@media(max-width:350px){.article-row{grid-template-columns:86px minmax(0,1fr);gap:12px}.article-thumb{height:70px}.row-copy h2{font-size:15px}.feed-tabs{gap:13px}.region-nav{gap:13px 16px}}

.revision-diff{display:grid;grid-template-columns:1fr 1fr;gap:24px}.revision-diff section{min-width:0}.revision-diff pre{font-size:13px;line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere;padding:16px;border:1px solid var(--line);background:#fff}.empty-deals{font-size:15px;line-height:1.9;margin:30px 0}.empty-deals a{color:var(--blue)}@media(max-width:767px){.revision-diff{display:block}}