:root{--navy:#0b2d56;--gold:#d3aa4d;--ink:#223044;--muted:#667085;--line:#dfe6ed;--pale:#f3f7fb}*{box-sizing:border-box}body{margin:0;background:#fff;color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;font-size:17px;line-height:1.7}a{color:var(--navy);text-decoration:none;overflow-wrap:anywhere}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--gold);outline-offset:3px}img{max-width:100%;height:auto}button,input,textarea{font:inherit}button{cursor:pointer}h1,h2,h3,p{margin-top:0}h1{font-size:30px;line-height:1.5;overflow-wrap:anywhere}h2{font-size:23px;line-height:1.5;color:var(--navy)}.wrap{width:calc(100% - 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var(--gold);line-height:1.7}.row-title>a:first-child{font-size:17px;color:var(--ink)}.category-mark{display:inline-block;font-size:12px;margin-left:12px;color:var(--muted)}time{color:var(--muted);font-size:13px;white-space:nowrap}.native-module{margin-bottom:22px;border:1px solid var(--line)}.native-module>h2{font-size:19px;margin:0;background:var(--pale);padding:10px 14px;border-bottom:1px solid var(--line)}.module-content{padding:12px 14px;font-size:15px;overflow-wrap:anywhere}.module-content ul{list-style:none;margin:0;padding:0}.module-content li{margin:6px 0}.module-content table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:13px}.module-content td,.module-content th{text-align:center;padding:5px 1px}.module-content caption{font-size:15px;margin-bottom:8px}.module-content img{max-width:100%;height:auto}.module-content iframe{max-width:100%}.topic-entry+.topic-entry{border-top:1px solid var(--line);padding-top:12px;margin-top:12px}.topic-entry img{aspect-ratio:2.5;object-fit:cover;display:block;margin-bottom:6px}.topic-title{font-size:18px;font-weight:650}.topic-entry p{font-size:13px;color:var(--muted);margin:3px 0}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--muted);margin-bottom:16px}.post-meta{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--muted);margin:0 0 20px}.post-intro{padding:15px 18px;background:var(--pale);border-left:3px solid var(--gold);font-size:16px;margin-bottom:22px}.reading{max-width:860px}.post-body{font-size:18px;line-height:1.85;overflow-wrap:anywhere}.post-body img{height:auto;max-width:100%}.post-body pre{max-width:100%;overflow:auto;background:var(--pale);padding:16px;font-size:15px;white-space:pre}.post-body table{display:block;max-width:100%;overflow:auto;border-collapse:collapse}.post-body th,.post-body td{padding:8px 12px;border:1px solid var(--line)}.table-scroll{overflow:auto;max-width:100%}.table-scroll 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var(--line);padding:15px 0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.skip-link{position:absolute;left:16px;top:-100px;z-index:100;background:white;padding:10px}.skip-link:focus{top:12px}.msg{list-style:none;padding:12px;border-bottom:1px solid var(--line);font-size:15px;overflow-wrap:anywhere}.msg .msg{margin-left:20px}.msg img{width:40px;height:40px;float:left;margin-right:12px}#divCommentPost{margin-top:25px}#divCommentPost input.text,#divCommentPost textarea{max-width:100%;border:1px solid var(--line);padding:8px}#divCommentPost textarea{width:100%}#divCommentPost .button{background:var(--navy);color:#fff;border:0;padding:9px 22px}
@media(max-width:1023px){.layout{grid-template-columns:minmax(0,1fr);grid-template-areas:"main" "aside"}.sidebar{width:100%}.masthead{gap:24px}.brand>a{font-size:26px}.wrap{width:calc(100% - 32px)}}
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.topic-card-module>.module-content{padding:8px}.topic-card-module .topic-entry{padding:0}.topic-card-module .topic-entry+.topic-entry{margin-top:14px;padding-top:14px}.topic-card-banner{position:relative;display:block;aspect-ratio:2.5;overflow:hidden;background:#143b65}.topic-card-banner img{width:100%;height:100%;aspect-ratio:auto;object-fit:cover;margin:0;display:block}.topic-card-banner::after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(0,0,0,.72))}.topic-card-banner .topic-title{position:absolute;z-index:1;left:12px;right:12px;bottom:8px;font-size:24px;font-weight:750;color:#fff;line-height:1.35;text-shadow:0 1px 3px #000;overflow-wrap:anywhere}.topic-card-banner.no-cover{aspect-ratio:auto;min-height:68px}.topic-card-shortcuts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;margin-top:6px}.topic-card-shortcuts a{display:flex;justify-content:center;align-items:center;padding:5px 4px;background:#edf3f9;color:#173e6b;font-size:13px;line-height:1.5;text-align:center;border-radius:2px}.topic-card-shortcuts a:hover{background:#dfeaf5;text-decoration:none}.topic-card-banner:hover .topic-title{text-decoration:underline}
.topic-card-banner img{object-position:center top}
/* The overlapping grid lets a long name expand the banner naturally. */
.topic-card-banner{display:grid;aspect-ratio:auto}.topic-card-banner::before{content:"";grid-area:1/1;padding-top:40%}.topic-card-banner img{position:absolute;inset:0;object-position:center top}.topic-card-banner .topic-title{position:relative;grid-area:1/1;align-self:end;left:auto;right:auto;bottom:auto;margin:16px 12px 8px}.topic-card-banner.no-cover::before{padding-top:0;min-height:68px}