:root{--paper:#f8f7f3;--ink:#233d36;--muted:#63716a;--line:#d7dcd3;--soft:#e9ede5;--accent:#b55736;--white:#fffefa;--serif:Georgia,'Times New Roman','Songti SC',serif;--sans:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC',sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.65 var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}button{font:inherit}img{max-width:100%;height:auto}::selection{background:#dce4d4}.wrap{width:min(1120px,calc(100% - 96px));margin:auto}.site-header{height:92px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}.brand{font-size:20px;font-weight:650;letter-spacing:-.8px;white-space:nowrap}.brand 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h2{font-size:10px;letter-spacing:1.5px;text-transform:uppercase;margin:0 0 20px}.toc{list-style:none;padding:0;margin:0}.toc li{margin:0 0 14px}.toc a{display:block;color:var(--muted);line-height:1.5;padding-left:13px;border-left:1px solid var(--line)}.toc a[aria-current="location"]{border-left:2px solid var(--accent);color:var(--ink)}.series-note{margin-top:36px;padding-top:23px;border-top:1px solid var(--line);color:var(--muted);line-height:1.7}.series-note strong{font-weight:500;color:var(--ink)}.series-note a{display:inline-block;margin-top:15px;text-decoration:underline;text-underline-offset:4px}.article-end{border-top:1px solid var(--line);padding-top:28px;margin-top:40px;display:flex;justify-content:space-between;font:13px var(--sans);gap:24px}.mobile-toc{display:none}.reading-progress{height:2px;background:var(--accent);position:fixed;left:0;top:0;width:100%;transform:scaleX(0);transform-origin:left;z-index:5}.article-body 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h1{font-size:35px}.article-meta{gap:10px;font-size:11px}.language-switch{margin-left:0}.article-grid{display:block;padding-top:26px}.article-sidebar{display:none}.mobile-toc{display:block;border-top:1px solid var(--line);padding:15px 0;font-size:13px}.mobile-toc summary{cursor:pointer}.mobile-toc .toc{padding-top:18px}.article-body{font-size:18px;line-height:1.8}.article-body>p:first-child{font-size:21px}.article-body h2{font-size:27px}.article-body:lang(zh){font-size:16px}.article-body:lang(zh)>p:first-child{font-size:18px}.article-body:lang(zh) h2{font-size:23px}.article-end{font-size:12px}.eyebrow{font-size:10px;letter-spacing:1.4px}}@media(max-width:380px){.site-nav{gap:12px}.brand{font-size:16px}.hero h1{font-size:41px}.hero{grid-template-columns:1fr 70px}.article-heading h1{font-size:37px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}@media print{.site-header,.article-sidebar,.mobile-toc,.reading-progress,.site-footer{display:none}.wrap{width:100%}.article-grid{display:block}.article-heading h1{font-size:34px}.article-body{font-size:12pt}.article-body img{max-height:70vh;object-fit:contain}body{background:white}}
/* Series directory and sequential article navigation. */
.essay-list{list-style:none;padding:0;margin:5px 0 65px}.essay-row{display:grid;grid-template-columns:65px 1fr;gap:26px;padding:30px 0;border-top:1px solid var(--line)}.essay-number{font:26px var(--serif);color:var(--accent);padding-top:6px}.essay-row h2{font:500 23px/1.5 var(--sans);margin:0 0 8px}.essay-row p{font:19px/1.5 var(--serif);margin:0 0 12px;color:var(--muted)}.essay-row .essay-question{font:14px/1.7 var(--sans);margin:16px 0}.essay-row .blog-links{font-size:12px}.series-intro{font-size:24px}.series-description{font-size:15px;color:var(--muted)}.article-end{flex-wrap:wrap;line-height:1.6}.article-end>a[rel]{flex:1 1 220px}.article-end strong{display:block;font-weight:500;margin-top:7px}.article-end span{font-size:11px;color:var(--muted)}.article-end .backtop{flex-basis:100%;margin-top:15px}@media(max-width:760px){.essay-row{grid-template-columns:32px 1fr;gap:15px;padding:25px 0}.essay-number{font-size:21px}.essay-row h2{font-size:20px}.essay-row p{font-size:17px}.series-intro{font-size:22px}}
.essay-row .series-stage{font:11px/1.7 var(--sans);letter-spacing:.04em;color:var(--accent);margin:0 0 17px}

.series-card{display:flex;align-items:center;justify-content:space-between;gap:32px;margin:0 0 52px;padding:26px 28px;border:1px solid var(--line);background:var(--white);border-radius:4px}.series-card span{font-size:10px;letter-spacing:1.5px;color:var(--accent)}.series-card h2{font:500 25px/1.35 var(--serif);margin:7px 0}.series-card p{font-size:13px;color:var(--muted);margin:4px 0}.series-card-link{font-size:12px;white-space:nowrap;border-bottom:1px solid var(--line);padding-bottom:3px}.series-title{font:500 31px/1.3 var(--serif);margin:0 0 8px}@media(max-width:760px){.series-card{align-items:flex-start;flex-direction:column;gap:16px;padding:22px}.series-card h2{font-size:22px}.series-title{font-size:27px}}