@charset "UTF-8";
:root{--paper:#f7f5ef;--surface:#fffdf8;--ink:#252820;--muted:#666a5f;--line:#dcded2;--accent:#d94a22;--accent-text:#b83a14;--accent-soft:#f8e7de;--olive:#5f6a40;--soft:#eeeee5;--serif:"Songti SC","Noto Serif CJK SC","Source Han Serif SC",STSong,SimSun,serif;--sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;--article-size:19px;color-scheme:light}
:root[data-theme=dark]{--paper:#1e211e;--surface:#252925;--ink:#e6e7de;--muted:#a1a897;--line:#3d443b;--accent:#fa9671;--accent-text:#fa9671;--accent-soft:#41342b;--olive:#adb88b;--soft:#2d322b;color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;-webkit-font-smoothing:antialiased}button,input{font:inherit}button,a,input{ -webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer;color:inherit}a{color:inherit;text-decoration:none}button{border:0;background:none}button:disabled{opacity:.4;cursor:default}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}p{line-height:1.85}button,a{transition:background .18s,color .18s,border-color .18s}img{display:block;max-width:100%}svg{display:block}h1,h2,h3,p{margin-top:0}main:focus{outline:none}::selection{background:var(--accent-soft);color:var(--accent-text)}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link{position:fixed;left:16px;top:-60px;padding:12px;background:var(--ink);color:var(--paper);z-index:100}.skip-link:focus{top:12px}.site-header{height:77px;padding:0 4.5%;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:30px;position:sticky;top:0;z-index:20;background:var(--paper)}.brand{display:flex;align-items:center;gap:11px;font-size:17px;font-weight:650;white-space:nowrap}.brand-en{font-size:10px;letter-spacing:.15em;font-weight:500;margin-left:5px;color:var(--muted)}.header-links{display:flex;gap:30px;align-items:center;margin-left:auto;font-size:13px}.header-links a:hover,.header-links button:hover{color:var(--accent)}.header-links span{font-size:10px;color:var(--muted);vertical-align:super}.header-actions{display:flex;gap:8px}.icon-button{width:34px;height:34px;display:grid;place-items:center;font-size:22px;border:1px solid var(--line);border-radius:50%}.icon-button:hover{background:var(--soft)}.mobile-only{display:none}.eyebrow{font-size:11px;letter-spacing:.16em;font-weight:600;color:var(--muted);line-height:1.6}.accent{color:var(--accent)}.muted{color:var(--muted)}.small{font-size:12px}.serif{font-family:var(--serif)}.mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.loading{padding:100px 6%;font-family:var(--serif);font-size:24px}.home{max-width:1400px;padding:0 5.5%;margin:auto}.hero{display:grid;grid-template-columns:1.08fr 1fr;gap:5%;min-height:595px;padding:67px 0 50px;align-items:center}.season-line{display:flex;align-items:center;gap:12px;margin-bottom:31px}.season-line:before{content:"";width:26px;height:1px;background:var(--accent)}.hero h1{font-size:clamp(65px,7vw,102px);font-family:var(--serif);font-weight:700;letter-spacing:-.04em;line-height:1.05;margin:0 0 27px}.hero h1 em{font-style:normal;color:var(--accent)}.hero .subtitle{font-size:20px;line-height:1.8;letter-spacing:.08em;margin:0 0 16px}.hero .intro{font-size:14px;color:var(--muted);line-height:1.9;max-width:395px;margin-bottom:29px}.hero-actions{display:flex;align-items:center;gap:26px}.primary-button{display:inline-flex;align-items:center;justify-content:space-between;gap:34px;background:var(--ink);color:var(--paper);padding:14px 22px;font-size:14px;min-height:48px}.primary-button:hover{background:var(--accent);color:var(--paper)}.text-link{font-size:13px;border-bottom:1px solid var(--line);padding-bottom:5px}.text-link:hover{color:var(--accent)}.author-line{display:flex;gap:15px;font-size:11px;color:var(--muted);margin-top:28px;align-items:center}.author-line i{height:12px;width:1px;background:var(--line)}.hero-art{position:relative;align-self:stretch;display:flex;flex-direction:column;justify-content:center}.hero-art svg{width:100%;height:auto;overflow:visible}.hero-art text{font-family:var(--sans);fill:var(--ink)}.hero-art .orbit{stroke:var(--line);fill:none}.hero-art .solid-line{stroke:var(--olive);fill:none}.hero-art .map-box{fill:var(--paper);stroke:var(--line)}.hero-art .center{fill:var(--accent-soft);stroke:var(--accent)}.hero-art .map-link:hover .map-box{stroke:var(--accent);fill:var(--accent-soft)}.hero-art .map-link:focus-visible{outline:none}.hero-art .map-link:focus-visible .map-box{stroke:var(--accent);stroke-width:3}.figure-foot{display:flex;justify-content:space-between;gap:15px;padding:16px 0 0;border-top:1px solid var(--line);font-size:10px;color:var(--muted);letter-spacing:.04em}.hero-art .diagram-en{font-family:Georgia,serif;font-style:italic;fill:var(--muted)}.reading-paths{display:grid;grid-template-columns:1fr 1fr 1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:64px}.path-card{display:flex;align-items:center;gap:19px;padding:23px 22px;border-right:1px solid var(--line)}.path-card:first-child{padding-left:0}.path-card:last-child{border-right:0}.path-card:hover{color:var(--accent)}.path-card .path-index{font-family:var(--serif);font-size:24px;color:var(--olive)}.path-card strong{font-size:14px;font-weight:550;display:block;margin-bottom:7px}.path-card small{font-size:11px;color:var(--muted)}.path-card .arrow{margin-left:auto;font-size:20px}.section-title{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:28px}.section-title h2{font-family:var(--serif);font-size:35px;font-weight:550;margin:7px 0 0}.section-title p{font-size:13px;color:var(--muted);margin:0}.catalog-tools{display:flex;justify-content:space-between;gap:20px;align-items:center;border-bottom:1px solid var(--line);margin-bottom:30px}.filter-list{display:flex;gap:25px;overflow:auto}.filter-button{white-space:nowrap;padding:14px 0 18px;border-bottom:2px solid transparent;color:var(--muted);font-size:12px}.filter-button[aria-pressed=true]{color:var(--ink);border-color:var(--accent)}.search-wrap{display:flex;align-items:center;gap:10px;max-width:230px;color:var(--muted);flex-shrink:0}.search-wrap input{width:100%;border:0;background:transparent;color:var(--ink);padding:10px 0;font-size:12px;outline-offset:0}.search-wrap span{font-size:20px}.search-result{font-size:12px;color:var(--muted);margin-bottom:20px}.catalog-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px 28px}.chapter-card{display:flex;flex-direction:column;border-bottom:1px solid var(--line);min-height:300px;padding:24px 0 25px}.card-top{display:flex;align-items:center;justify-content:space-between;font-size:10px;color:var(--muted);letter-spacing:.04em}.card-number{font-family:var(--serif);font-size:34px;line-height:1;color:var(--accent)}.chapter-card h3{font-family:var(--serif);font-size:22px;line-height:1.6;margin:24px 0 12px;font-weight:650}.chapter-card p{font-size:12px;color:var(--muted);line-height:1.9;margin:0 0 25px}.chapter-card:hover h3{color:var(--accent)}.chapter-card:hover .card-arrow{transform:translateX(4px);color:var(--accent)}.card-foot{display:flex;align-items:center;gap:12px;margin-top:auto;font-size:10px;color:var(--muted)}.card-foot .tag{background:var(--soft);padding:4px 7px;color:var(--olive);letter-spacing:.04em}.card-arrow{font-size:20px;margin-left:auto;transition:transform .2s}.read-mark{color:var(--olive);font-size:11px}.no-results{padding:45px 0;line-height:1.8;grid-column:1/-1;color:var(--muted)}.maps-section{margin:95px 0 68px;padding:45px;background:var(--soft);position:relative}.maps-section .section-title{margin-bottom:35px}.maps-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:1px solid var(--line)}.map-item{padding:25px 15px 0;border-right:1px solid var(--line);display:block}.map-item:first-child{padding-left:0}.map-item:last-child{border-right:0}.map-item .map-en{font-family:Georgia,serif;font-style:italic;font-size:21px;color:var(--olive)}.map-item h3{font-size:16px;margin:16px 0 10px;font-weight:500}.map-item p{font-size:11px;color:var(--muted);line-height:1.8}.map-item:hover h3{color:var(--accent)}.maps-note{font-size:11px;color:var(--muted);margin:22px 0 0}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding:25px 0 40px;color:var(--muted);font-size:11px}.site-footer .footer-brand{font-family:var(--serif);font-size:21px;color:var(--ink)}.site-footer a:hover{color:var(--accent)}
/* Reading layout */
#reading-progress{height:2px;background:var(--accent);position:fixed;top:76px;left:0;width:0;z-index:22;transition:width .12s linear}.reader-layout{display:grid;grid-template-columns:245px minmax(0,1fr) 218px;max-width:1590px;margin:auto;min-height:calc(100vh - 77px)}.chapter-sidebar{position:sticky;top:77px;height:calc(100vh - 77px);overflow:auto;padding:31px 20px 40px 24px;border-right:1px solid var(--line);scrollbar-width:thin}.sidebar-home{font-size:12px;display:block;color:var(--muted);margin-bottom:33px}.sidebar-group{margin:26px 0 10px;color:var(--muted);font-size:10px;letter-spacing:.08em;font-weight:500}.sidebar-link{display:flex;gap:12px;padding:10px 9px;margin:0 -9px;line-height:1.7;font-size:12px;border-left:2px solid transparent}.sidebar-link .number{font-size:10px;color:var(--muted);min-width:18px;padding-top:2px}.sidebar-link.active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-text)}.sidebar-link.active .number{color:var(--accent-text)}.sidebar-link:hover{color:var(--accent)}.article-center{min-width:0;padding:49px clamp(25px,4.4vw,70px) 50px}.article-inner{max-width:730px;margin:auto}.article-kicker{display:flex;align-items:center;justify-content:space-between;margin-bottom:27px;font-size:11px;color:var(--muted);letter-spacing:.06em}.article-kicker .kicker-number{font-family:Georgia,serif;font-size:22px;color:var(--accent-text);margin-right:10px}.article-title{font-size:clamp(29px,3.2vw,43px);font-family:var(--serif);line-height:1.5;margin:0 0 26px;font-weight:650;letter-spacing:-.02em}.article-meta{display:flex;flex-wrap:wrap;gap:10px 15px;align-items:center;color:var(--muted);font-size:11px;margin-bottom:25px}.reading-toolbar{display:flex;align-items:center;gap:15px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:10px 0;font-size:11px;margin:0 0 31px;flex-wrap:wrap}.reading-toolbar button,.reading-toolbar a{padding:5px 0}.reading-toolbar button:hover,.reading-toolbar a:hover{color:var(--accent)}.reading-toolbar .tool-label{color:var(--muted);margin-right:auto}.reading-toolbar .font-button{font-size:14px;min-width:26px}.concept{background:var(--soft);padding:25px;margin:0 0 40px}.concept-label{font-size:10px;color:var(--olive);display:flex;align-items:center;gap:12px;letter-spacing:.1em;margin-bottom:17px}.concept-label:after{content:"";height:1px;flex:1;background:var(--line)}.concept-hub{text-align:center;font-size:13px;border:1px solid var(--line);padding:9px;width:fit-content;margin:0 auto 20px;background:var(--paper)}.concept-nodes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;position:relative}.concept-node{padding:12px;background:var(--paper);border-left:2px solid var(--olive);font-size:12px;line-height:1.5;position:relative}.concept-node b{font-weight:550;display:block;margin:0 0 5px}.concept-node small{font-size:10px;color:var(--muted);display:block}.concept-node .node-no{position:absolute;right:8px;top:8px;color:var(--line);font:16px Georgia,serif}.concept-fork .concept-node{border-left-color:var(--accent)}.concept-flow .concept-node b:before{content:attr(data-step) " / ";color:var(--olive);font-size:10px}.concept-loop .concept-nodes:after{content:"↶";position:absolute;bottom:-29px;right:0;color:var(--olive);font-size:24px}.concept-feedback{margin-top:15px;color:var(--olive);font-size:10px;padding:0 23px 0 0}.concept-takeaway{font-family:var(--serif);font-size:17px;line-height:1.9;margin:22px 0 0}.concept-description{color:var(--muted);font-size:10px;line-height:1.8;margin:10px 0 0}.prose{font-family:var(--sans);font-size:var(--article-size);line-height:1.95;overflow-wrap:anywhere;color:var(--ink)}.prose p{margin:0 0 1.4em;line-height:1.95;letter-spacing:.015em}.prose h2{font-family:var(--serif);font-weight:650;line-height:1.65;font-size:1.35em;margin:2.7em 0 1.15em;padding-top:20px;border-top:1px solid var(--line);scroll-margin-top:22px}.prose h3{font-size:1.04em;line-height:1.7;margin:2em 0 1em}.prose strong{font-weight:650}.prose a{color:var(--accent-text);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px;font-size:inherit}.prose ul,.prose ol{padding-left:1.6em;margin-bottom:1.4em}.prose li{padding-left:4px;margin:8px 0}.prose blockquote{border-left:2px solid var(--accent);padding:0 0 0 22px;margin:25px 0;color:var(--muted)}.prose table{border-collapse:collapse;max-width:100%;display:block;overflow-x:auto;font-size:14px;margin:25px 0}.prose th,.prose td{border:1px solid var(--line);padding:10px}.prose hr{border:0;border-top:1px solid var(--line);margin:35px 0}.toc-sidebar{position:sticky;top:77px;height:calc(100vh - 77px);overflow:auto;scrollbar-width:thin;padding:51px 25px 35px 7px;color:var(--muted);font-size:11px}.toc-title{font-size:10px;letter-spacing:.1em;margin-bottom:20px}.toc-sidebar a{display:block;padding:7px 0 7px 12px;border-left:1px solid var(--line);line-height:1.7;margin-left:0}.toc-sidebar a.active{border-left:2px solid var(--accent);color:var(--accent-text);padding-left:11px}.toc-sidebar a:hover{color:var(--ink)}.toc-progress{border-top:1px solid var(--line);margin-top:27px;padding-top:18px;display:flex;justify-content:space-between}.gallery-section{border-top:1px solid var(--line);margin-top:55px;padding-top:32px;scroll-margin-top:22px}.gallery-section h2{font-family:var(--serif);font-size:25px;font-weight:500}.gallery-section>p{font-size:11px;color:var(--muted)}.image-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 16px;margin:25px 0}.gallery-item{margin:0}.gallery-item button{padding:0;background:var(--soft);width:100%;display:block;overflow:hidden}.gallery-item img{width:100%;height:auto;aspect-ratio:1/1;object-fit:contain;transition:transform .2s}.gallery-item button:hover img{transform:scale(1.02)}.gallery-item figcaption{font-size:11px;color:var(--muted);line-height:1.7;margin-top:10px}.article-download{padding:24px 0 0;border-top:1px solid var(--line);margin:24px 0 0;scroll-margin-top:22px;font-size:13px}.article-download a{text-decoration:underline;text-underline-offset:4px;color:var(--muted)}.article-download a:hover{color:var(--accent)}.next-reading{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:35px;border-top:1px solid var(--line);padding-top:25px}.next-reading a{display:flex;flex-direction:column;gap:12px;font-family:var(--serif);font-size:18px;line-height:1.7}.next-reading a span{font-family:var(--sans);font-size:10px;color:var(--muted)}.next-reading a:hover{color:var(--accent)}.next-reading a:last-child{text-align:right}.end-marker{display:flex;justify-content:center;align-items:center;gap:12px;color:var(--olive);font-size:11px;margin:38px 0 0}.end-marker:before,.end-marker:after{content:"";width:25px;height:1px;background:var(--line)}.reader-mobile-label{display:none}
/* Dialogs and feedback */
dialog{background:var(--paper);color:var(--ink);border:1px solid var(--line);padding:40px;max-width:600px;max-height:86dvh;overflow:auto}dialog::backdrop{background:#20251dcc;backdrop-filter:blur(4px)}body:has(dialog[open]){overflow:hidden}.dialog-close{position:absolute;right:17px;top:10px;font-size:30px;font-weight:300;min-width:38px;height:38px}.about-dialog h2{font-family:var(--serif);font-size:32px;margin:23px 0}.about-dialog p{font-size:14px;line-height:1.9}.about-links a:hover{color:var(--accent)}.image-dialog{max-width:95vw;width:1000px;padding:0;max-height:94dvh}.image-toolbar{position:sticky;top:0;display:flex;align-items:center;gap:15px;justify-content:space-between;padding:10px 18px;background:var(--paper);border-bottom:1px solid var(--line);font-size:12px;z-index:1}.image-toolbar span{margin-right:auto}.image-toolbar a{white-space:nowrap;font-size:11px}.image-toolbar button{font-size:30px;width:32px;height:32px;line-height:1}.image-viewport{overflow:auto;max-height:calc(94dvh - 60px)}.image-viewport img{width:100%;height:auto}.navigation-dialog{width:min(90vw,480px);padding:30px;max-height:88dvh}.navigation-dialog .sidebar-link{font-size:14px}.navigation-dialog .toc-title{margin-top:20px}.navigation-dialog .mobile-toc a{display:block;font-size:13px;padding:9px 0;color:var(--muted);line-height:1.7}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(100px);z-index:100;opacity:0;background:var(--ink);color:var(--paper);padding:12px 22px;font-size:13px;pointer-events:none;transition:all .2s}#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(min-width:1600px){.hero{min-height:670px}.hero h1{font-size:110px}}
@media(max-width:1250px){.reader-layout{grid-template-columns:220px minmax(0,1fr)}.toc-sidebar{display:none}.article-inner{max-width:730px}.reader-mobile-label{display:inline}.mobile-only{display:grid}.catalog-tools{gap:15px}.filter-list{gap:17px}.hero{gap:2%;min-height:545px}.hero h1{font-size:80px}.article-center{padding:43px 6%}.header-links{gap:22px}}
@media(max-width:980px){.hero{grid-template-columns:1.1fr 1fr;padding-top:45px;min-height:520px}.hero h1{font-size:65px}.hero .subtitle{font-size:17px}.hero .intro{font-size:12px}.brand-en{display:none}.catalog-tools{align-items:stretch;flex-direction:column;gap:0}.search-wrap{max-width:none;border-top:1px solid var(--line);padding:3px 0}.filter-list{gap:26px}.chapter-card h3{font-size:20px}.catalog-grid{gap:15px 25px}.maps-section{padding:30px}.map-item{padding:23px 10px 0}.path-card{padding:23px 13px;gap:13px}.path-card small{font-size:10px}.reader-layout{grid-template-columns:190px minmax(0,1fr)}.chapter-sidebar{padding:26px 16px}.sidebar-link{font-size:11px;gap:8px}.article-center{padding:35px 28px}.article-title{font-size:34px}}
@media(max-width:760px){.site-header{height:64px;padding:0 5%;gap:15px}.brand{font-size:16px;gap:9px}.brand img{width:24px;height:24px}.header-links{gap:17px;font-size:12px}.header-links>a:nth-child(2),.header-links button{display:none}.header-actions{gap:7px}.icon-button{width:30px;height:30px;font-size:19px}.home{padding:0 6%}.hero{grid-template-columns:1fr;gap:22px;padding:41px 0 25px;min-height:0}.season-line{margin-bottom:27px}.hero h1{font-size:76px;margin-bottom:24px}.hero .subtitle{font-size:18px}.hero .intro{font-size:13px;max-width:420px}.hero-actions{gap:25px}.hero-art{max-width:440px;width:100%;margin:12px auto 0}.hero-art svg{max-height:370px}.figure-foot{font-size:9px;padding-top:13px}.author-line{margin-top:23px}.reading-paths{grid-template-columns:1fr;margin-bottom:44px}.path-card,.path-card:first-child{padding:18px 0;border-right:0;border-bottom:1px solid var(--line);gap:17px}.path-card:last-child{border-bottom:0}.path-card strong{font-size:14px;margin-bottom:5px}.path-card small{font-size:11px}.path-card .path-index{font-size:22px;min-width:27px}.section-title{display:block;margin-bottom:21px}.section-title h2{font-size:31px;margin-bottom:12px}.section-title p{font-size:12px}.filter-list{gap:22px;scrollbar-width:none}.filter-button{font-size:11px;padding-bottom:13px}.catalog-tools{margin-bottom:13px}.catalog-grid{grid-template-columns:1fr 1fr;gap:6px 23px}.chapter-card{min-height:275px;padding:20px 0}.chapter-card h3{font-size:19px;margin:18px 0 10px;line-height:1.55}.chapter-card p{font-size:11px;line-height:1.9;margin-bottom:20px}.card-top>span:last-child{font-size:9px;max-width:70px;text-align:right;line-height:1.6}.card-number{font-size:29px}.card-foot{gap:8px;flex-wrap:wrap;font-size:9px}.card-foot .tag{padding:3px 5px}.card-arrow{font-size:17px}.maps-section{margin:55px -3% 35px;padding:28px 20px}.maps-grid{grid-template-columns:1fr}.map-item,.map-item:first-child{border-right:0;border-bottom:1px solid var(--line);padding:18px 0;display:grid;grid-template-columns:95px 1fr;align-items:center;column-gap:17px}.map-item:last-child{border-bottom:0}.map-item .map-en{font-size:20px;grid-row:1/3}.map-item h3{font-size:15px;margin:0 0 5px}.map-item p{margin:0;font-size:11px}.maps-note{font-size:10px}.site-footer{align-items:start;flex-direction:column;font-size:10px;gap:12px;padding-bottom:28px}.reader-layout{display:block}.chapter-sidebar{display:none}.article-center{padding:30px 6% 40px}.article-title{font-size:32px;line-height:1.5}.article-kicker{margin-bottom:23px;font-size:10px}.article-kicker .kicker-number{font-size:20px}.article-meta{font-size:10px}.reading-toolbar{gap:16px;font-size:10px;margin-bottom:25px}.concept{padding:20px;margin-bottom:33px}.concept-node{padding:10px;font-size:11px}.concept-node small{font-size:9px}.concept-takeaway{font-size:16px}.concept-description{font-size:10px}.prose{font-size:var(--article-size)}.prose h2{font-size:1.25em;margin-top:2.3em}.prose p{line-height:1.95}.prose h3{font-size:1.02em}#reading-progress{top:63px}.next-reading{gap:18px}.next-reading a{font-size:16px}.gallery-section h2{font-size:23px}.image-grid{gap:20px 13px}.image-toolbar{padding:8px 11px}.image-toolbar span{font-size:11px}.image-toolbar a{font-size:10px}.about-dialog{max-width:92vw;padding:34px 25px}.about-dialog p{font-size:13px}.about-dialog h2{font-size:29px}}
@media(max-width:380px){.header-links{display:none}.header-actions{margin-left:auto}.hero h1{font-size:66px}.catalog-grid{grid-template-columns:1fr}.chapter-card{min-height:230px}.chapter-card h3{font-size:23px}.card-top>span:last-child{max-width:none}.article-title{font-size:28px}.reading-toolbar{gap:11px}.concept-node b{max-width:90%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media print{.site-header,.chapter-sidebar,.toc-sidebar,.reading-toolbar,.concept,.next-reading,.header-actions,#reading-progress,dialog,#toast{display:none!important}.reader-layout{display:block}.article-center{padding:0}.prose{font-size:12pt}.article-title{font-size:24pt}.gallery-section{break-before:page}.prose h2{break-after:avoid}.gallery-item{break-inside:avoid}body{background:white;color:black}}

.section-anchor{display:block;height:0;scroll-margin-top:22px}

/* One editable diagram per article. */
.reading-figure{margin:28px 0 40px;position:relative}
.reading-figure button{display:block;width:100%;padding:0;border:0;background:transparent;cursor:zoom-in;border-radius:16px;overflow:hidden}
.reading-figure img{display:block;width:100%;height:auto}
.reading-figure figcaption{font-size:13px;color:var(--muted);padding-top:9px}







.prose table{display:block;overflow-x:auto;width:100%;border-collapse:collapse;font-size:16px;line-height:1.7;margin:24px 0}
.prose th,.prose td{border:1px solid var(--line,#d9dfda);padding:12px 14px;text-align:left;vertical-align:top;min-width:110px}
.prose th{font-weight:600}
.prose img{max-width:100%;height:auto}
.prose a{overflow-wrap:anywhere}
.prose #references{font-size:1.05em}
.prose #references+ul{font-size:.85em;line-height:1.8}
@media(max-width:720px){.reading-figure{margin:24px 0 30px}.prose th,.prose td{padding:10px;min-width:120px}}

/* Touch targets, diagram zoom and static article pages. */
.reading-figure button{position:relative}
.zoom-hint{position:absolute;right:10px;bottom:10px;background:var(--ink);color:var(--paper);font-size:12px;line-height:1;padding:8px 12px;border-radius:99px;pointer-events:none;box-shadow:0 2px 8px #0003}
.reading-figure button:hover .zoom-hint{background:var(--accent-text)}
.zoom-tools{display:flex;gap:4px;margin-right:4px}
.zoom-tools button{min-width:44px;min-height:44px;font-size:15px;border:1px solid var(--line);border-radius:4px}
.zoom-tools button:hover{background:var(--soft)}
.image-toolbar button#image-close{width:44px;height:44px}
.image-viewport{touch-action:pan-x pan-y;overscroll-behavior:contain}
.image-viewport img{max-width:none;width:100%}
.menu-links{display:flex;flex-wrap:wrap;gap:0 20px;border-bottom:1px solid var(--line);margin:8px 0 22px;padding-bottom:6px}
.menu-links a,.menu-links button{min-height:44px;display:inline-flex;align-items:center;font-size:15px}
.static-reader{display:block}
.static-back{font-size:13px;margin:30px 0 0}
.static-back a{color:var(--muted);text-decoration:underline;text-underline-offset:4px;display:inline-block;padding:10px 0}
@media(max-width:1250px){.icon-button{width:44px;height:44px}.reading-toolbar a,.reading-toolbar button{min-height:44px;display:inline-flex;align-items:center}.reading-toolbar .font-button{min-width:44px;justify-content:center}}
@media(max-width:760px){
.header-links{display:none}
.site-header{gap:8px}.header-actions{margin-left:auto;gap:2px;align-items:center}
.header-actions .ai-entry{min-height:44px;padding:0 10px;font-size:12px}
.reading-toolbar{gap:0 4px;font-size:12px}.reading-toolbar .tool-label{margin-right:auto;padding-right:8px}.reading-toolbar a,.reading-toolbar button{padding:0 8px}
.dialog-close{min-width:44px;height:44px;right:10px;top:6px}
.filter-button{min-height:44px;font-size:12px}
.search-wrap input{min-height:44px;font-size:14px}
.card-foot{font-size:11px}.card-top>span:last-child{font-size:11px;max-width:84px}.chapter-card p{font-size:12px}.card-foot .tag{padding:3px 6px}
.article-kicker,.article-meta{font-size:12px}.figure-foot{font-size:11px}.author-line{font-size:12px}.map-item p,.maps-note{font-size:12px}.site-footer{font-size:12px}.site-footer a{display:inline-block;padding:8px 0}
.next-reading a span{font-size:12px}.sidebar-group{font-size:12px}
.navigation-dialog .sidebar-link,.navigation-dialog .mobile-toc a{min-height:44px;display:flex;align-items:center}
.reading-figure button{border-radius:12px}.zoom-hint{font-size:13px;padding:9px 13px}
.image-dialog{max-width:100vw;width:100vw;max-height:100dvh;height:100dvh;border:0}
.image-dialog[open]{display:flex;flex-direction:column}
.image-viewport{flex:1;max-height:none;min-height:0}
.image-toolbar{gap:6px;padding:6px 8px}.image-toolbar span#image-caption{display:none}.image-toolbar a{font-size:12px;padding:12px 4px}
}
@media(max-width:380px){.header-actions .ai-entry{padding:0 6px}}
@media(max-width:760px){.brand{min-height:44px}.text-link{display:inline-flex;align-items:center;min-height:44px;padding-bottom:0}.article-download a,.static-back a{display:inline-flex;align-items:center;min-height:44px}.image-toolbar a{min-height:44px;display:inline-flex;align-items:center}}

.site-footer .footer-contact{display:flex;align-items:center;flex-wrap:wrap;justify-content:center;gap:6px 18px}.site-footer .footer-contact a{display:inline-block;padding:8px 0}@media(max-width:760px){.site-footer .footer-contact{justify-content:flex-start;gap:4px 16px}}

.static-home{max-width:760px;margin:0 auto;padding:60px 6%}.static-home h1{font-family:var(--serif);font-size:48px;margin:0 0 8px}.static-home .static-subtitle{font-size:18px;color:var(--muted)}.static-list{line-height:2.2;padding-left:1.4em}.static-list small{color:var(--muted);margin-left:8px}.static-home a{border-bottom:1px solid var(--line)}