@font-face{font-family:Manrope;src:url('fonts/manrope.woff2') format('woff2');font-weight:400 800;font-style:normal;font-display:swap}
@font-face{font-family:'Instrument Serif';src:url('fonts/instrument-serif.woff2') format('woff2');font-weight:400;font-style:italic;font-display:swap}
:root{--paper:#f5f4ed;--ink:#202923;--muted:#60685f;--line:#d8dbcf;--accent:#b84024;--sage:#e7eadf;--forest:#223c32;--serif:'Instrument Serif',Georgia,serif;--sans:Manrope,'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;--max:1280px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:112px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit;color:inherit}button{cursor:pointer}button,a,input,summary{-webkit-tap-highlight-color:transparent}button{background:none}button:disabled{cursor:default}a,button{touch-action:manipulation}::selection{background:#d9e4cb;color:#132e21}:focus-visible{outline:2px solid var(--accent);outline-offset:5px;border-radius:2px}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:500;line-height:1.16;letter-spacing:-.045em}h2{font-size:clamp(30px,3vw,43px)}h3{font-size:23px}em{font-family:var(--serif);font-weight:400}img,svg{max-width:100%}img{height:auto}.icon{width:28px;height:28px;flex-shrink:0}button[hidden],[hidden]{display:none!important}.container{width:min(var(--max),calc(100% - 112px));margin-inline:auto}.eyebrow,.small-label{font-size:11px;font-weight:600;letter-spacing:.13em;line-height:1.5;text-transform:uppercase}.eyebrow{color:var(--muted)}.muted{color:var(--muted)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:-80px;left:20px;padding:12px 20px;background:var(--ink);color:white;z-index:100}.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(245,244,237,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.header-inner{height:88px;width:min(var(--max),calc(100% - 112px));margin:auto;display:flex;align-items:center;justify-content:space-between;gap:32px}.brand{display:inline-flex;align-items:center;gap:9px;font-size:24px;font-weight:800;letter-spacing:-1.1px;white-space:nowrap;line-height:1}.brand-mark{width:32px;height:35px}.brand-period{color:var(--accent)}.desktop-nav{display:flex;align-items:center;gap:38px;margin-left:auto;margin-right:40px}.desktop-nav a{position:relative;font-size:13px;font-weight:600;padding-block:10px}.desktop-nav a:after{content:'';position:absolute;height:2px;bottom:3px;left:0;right:100%;background:var(--accent);transition:right .2s}.desktop-nav a:hover:after,.desktop-nav a[aria-current]:after{right:0}.header-actions{display:flex;align-items:center;gap:21px}.icon-button{height:44px;width:44px;border:0;display:grid;place-items:center;border-radius:50%;transition:background .2s}.icon-button:hover{background:var(--sage)}.icon-button .icon{height:23px;width:23px}.language-link{font-size:12px;font-weight:700;display:flex;align-items:center;gap:9px;padding:12px 0 12px 23px;border-left:1px solid var(--line)}.language-link:hover{color:var(--accent)}.menu-toggle{border:0;width:36px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:5px;display:none}.menu-toggle span{height:1px;width:23px;background:var(--ink);transition:transform .2s}.menu-toggle[aria-expanded=true] span:first-child{transform:translateY(3px) rotate(45deg)}.menu-toggle[aria-expanded=true] span:last-child{transform:translateY(-3px) rotate(-45deg)}.mobile-nav{padding:8px 28px 25px;display:flex;flex-direction:column}.mobile-nav a{padding:14px 0;font-size:18px;border-top:1px solid var(--line)}
.hero{display:grid;grid-template-columns:1.08fr 1fr;align-items:center;min-height:650px;gap:10px;padding-block:62px 48px}.hero-eyebrow{display:flex;align-items:center;gap:10px;font-size:10px;letter-spacing:.15em;margin-bottom:31px}.status-dot{width:6px;height:6px;background:var(--accent);border-radius:50%}.hero h1{font-size:clamp(62px,6.4vw,92px);letter-spacing:-.063em;line-height:1.03;font-weight:500}.hero h1 em{font-size:1.19em;letter-spacing:-.035em;color:#385047;line-height:1.1}.hero-description{font-size:16px;line-height:1.85;color:var(--muted);max-width:435px;margin-top:29px}.hero-actions{display:flex;align-items:flex-start;flex-direction:column;gap:21px;margin-top:32px}.button{min-height:51px;padding:14px 23px;display:inline-flex;align-items:center;justify-content:space-between;gap:28px;font-size:12px;font-weight:600;line-height:1.5;border:1px solid transparent;border-radius:3px;transition:background .2s,transform .2s}.button .icon{width:22px;height:22px}.button:hover{transform:translateY(-2px)}.button-dark{background:var(--ink);color:var(--paper)}.button-dark:hover{background:#385047}.button-light{background:var(--paper);color:var(--ink)}.button-light:hover{background:#dfe6d7}.text-link{display:inline-flex;align-items:center;gap:14px;font-size:12px;font-weight:600;line-height:1.6;padding:5px 0;border-bottom:1px solid transparent}.text-link .icon{width:23px;height:23px}.text-link:hover{color:var(--accent);border-bottom-color:currentColor}.hero-art{position:relative;align-self:center;margin-right:-15px;margin-left:-25px;min-width:0}.scope-sphere{width:100%;display:block;overflow:visible}.art-coordinate{position:absolute;left:7%;right:7%;display:flex;justify-content:space-between;color:#737c6c;letter-spacing:.17em;font-size:9px;line-height:1}.art-coordinate-top{top:1%}.art-coordinate-top span{font-size:21px;font-family:Georgia;line-height:.5}.art-caption{display:flex;justify-content:space-between;align-items:center;margin:0 8%;padding-top:13px;border-top:1px solid var(--line);font-size:9px;letter-spacing:.16em;color:var(--muted)}.principles{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-block:23px;display:flex;justify-content:space-around;gap:24px}.principles>span{display:flex;align-items:center;gap:13px;font-size:11px;letter-spacing:.025em}.principle-mark{font-size:23px;color:#647356;line-height:1}
.section{padding-block:89px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:37px}.section-heading .eyebrow{margin-bottom:18px}.section-heading>.text-link{flex-shrink:0;margin-bottom:3px}.section-description{font-size:14px;color:var(--muted);margin-top:17px;max-width:540px}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.topic-card{border:1px solid var(--line);border-radius:3px;padding:28px;display:flex;flex-direction:column;min-height:290px;transition:background .25s,border-color .25s,transform .25s;background:#f8f7f1}.topic-card:hover{background:#e9edde;border-color:#afbaa5;transform:translateY(-4px)}.topic-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:44px}.topic-number{font-size:10px;letter-spacing:.08em;color:var(--muted)}.topic-top .icon{width:35px;height:35px;color:#526846}.topic-card h3{font-size:22px;letter-spacing:-.035em;margin-bottom:14px}.topic-card p{color:var(--muted);font-size:13px;line-height:1.8;max-width:305px}.topic-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:29px;font-size:10px;font-weight:600;color:#535f4b}.topic-bottom .icon{width:22px;height:22px}.topic-inline{display:grid;grid-template-columns:repeat(4,1fr);margin-top:24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.topic-inline>a{display:flex;align-items:center;gap:12px;padding:23px 18px 23px 0;font-size:11px;font-weight:600;transition:color .2s}.topic-inline>a:hover{color:var(--accent)}.topic-inline .icon{width:22px;height:22px;color:#647356}.topic-inline>a>span:last-child{margin-left:auto}.topic-inline>a+a{border-left:1px solid var(--line);padding-left:22px}
.method-section{background:var(--forest);color:var(--paper);overflow:hidden}.method-layout{display:grid;grid-template-columns:1fr 1fr;gap:110px;padding-block:77px 82px}.method-intro{position:relative}.method-intro .eyebrow{color:#c2cfbb;margin-bottom:25px}.method-intro h2{font-size:58px;line-height:1.08;letter-spacing:-.04em}.method-intro h2 em{color:#d6e2c8;font-size:1.16em}.method-intro>p:not(.eyebrow){color:#c4cfc4;font-size:14px;line-height:1.9;max-width:350px;margin-top:26px}.method-intro .button{margin-top:28px;position:relative;z-index:1}.method-steps{display:flex;flex-direction:column;justify-content:center}.method-step{display:flex;gap:28px;padding:30px 0;border-top:1px solid #4b6051}.method-step:last-child{border-bottom:1px solid #4b6051}.step-number{font-size:11px;font-weight:500;line-height:1.8;color:#d4ad80;flex-shrink:0}.method-step h3{font-size:23px;letter-spacing:-.02em;margin-bottom:14px}.method-step p{font-size:13px;line-height:1.85;color:#c4cfc4;max-width:320px}.method-decoration{position:absolute;right:12px;bottom:0;width:125px;height:125px;opacity:.35;pointer-events:none}.method-decoration span{position:absolute;inset:0;border:1px solid #c2c9ab;border-radius:50%}.method-decoration span:nth-child(2){inset:0 32px}.method-decoration span:nth-child(3){inset:32px 0}.method-decoration i{position:absolute;inset:0;display:grid;place-items:center;font:21px Georgia}.latest-section>.eyebrow{margin-bottom:32px}.opening-note{display:flex;justify-content:space-between;align-items:center;gap:70px;padding:36px 0 10px;border-top:1px solid var(--line)}.opening-note h2{max-width:680px;font-size:37px}.opening-note p{max-width:575px;color:var(--muted);font-size:14px;line-height:1.9;margin-top:20px}.opening-note .text-link{margin-top:21px}.opening-symbol{width:165px;height:165px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;flex-shrink:0}.opening-symbol .icon{width:94px;height:94px;color:#7f8e73;stroke-width:.55}
.site-footer{border-top:1px solid var(--line);padding-top:58px;background:#eeefe6}.footer-main{display:flex;justify-content:space-between;gap:60px;padding-bottom:54px}.footer-main .brand{font-size:22px}.footer-main .brand-mark{width:28px;height:31px}.footer-statement{font-size:21px;letter-spacing:-.035em;margin-top:28px}.footer-main .muted{font-size:12px;margin-top:8px}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:19px 55px;align-content:start;font-size:12px;padding-top:5px}.footer-links a:hover,.footer-bottom a:hover{color:var(--accent)}.footer-bottom{border-top:1px solid #d1d5c6;display:flex;align-items:center;gap:25px;min-height:75px;color:#626b5d;font-size:10px}.footer-note{margin-left:auto;margin-right:15px}.back-top{border:1px solid #c3cbb8;border-radius:50%;width:29px;height:29px;display:grid;place-items:center;font-size:15px}
.page-intro{padding:78px 0 53px;border-bottom:1px solid var(--line);margin-bottom:37px}.page-intro>.eyebrow{margin-bottom:25px}.page-intro h1{font-size:clamp(40px,4.8vw,66px);max-width:940px;line-height:1.14;letter-spacing:-.05em}.page-description{font-size:17px;line-height:1.85;color:var(--muted);max-width:620px;margin-top:24px}.all-topics .topic-card{min-height:305px}.topic-wide{grid-column:1/-1;display:grid;grid-template-columns:90px 1fr 150px;gap:30px;min-height:auto!important;align-items:center}.topic-wide .topic-top{margin:0;flex-direction:column-reverse;gap:14px}.topic-wide .topic-bottom{margin:0;padding:0}.topic-wide p{max-width:670px}.topic-wide h3{margin-bottom:10px}.empty-research{display:flex;align-items:center;gap:28px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:32px 0;margin-top:28px}.empty-research>.icon{width:34px;height:34px;color:#7b8870}.empty-research p{font-size:14px;color:var(--muted);line-height:1.9;max-width:695px}.empty-research h3{font-size:23px;margin-bottom:12px}.empty-research .text-link{margin-left:auto;flex-shrink:0}.breadcrumb{display:inline-flex;font-size:12px;color:var(--muted);padding-block:5px;margin-bottom:42px}.breadcrumb:hover{color:var(--accent)}.topic-title-row{display:flex;justify-content:space-between;align-items:center;gap:50px}.topic-title-row .eyebrow{margin-bottom:21px}.topic-emblem{width:150px;height:150px;background:var(--sage);border-radius:50%;display:grid;place-items:center;flex-shrink:0}.topic-emblem .icon{width:65px;height:65px;stroke-width:.8;color:#526846}.question-section{padding-top:25px}.questions{list-style:none;padding:0;margin:29px 0 20px}.questions li{display:flex;gap:36px;border-top:1px solid var(--line);padding:26px 0;align-items:baseline}.questions li:last-child{border-bottom:1px solid var(--line)}.question-number{font-size:11px;color:var(--accent)}.questions h2{font-size:clamp(20px,2.2vw,29px);letter-spacing:-.025em;line-height:1.5;max-width:880px}.scope-note{color:var(--muted);font-size:12px}.related-topics{padding-bottom:76px}.related-topics .topic-inline{grid-template-columns:repeat(3,1fr)}.article-list{border-top:1px solid var(--line);margin-top:30px}.article-row{display:grid;grid-template-columns:155px 1fr 30px;gap:30px;border-bottom:1px solid var(--line);padding:30px 0}.article-row h3{font-size:27px}.article-row p{font-size:14px;color:var(--muted);margin-top:15px;max-width:720px}.article-row:hover h3{color:var(--accent)}
.reading-container{max-width:1160px}.article-header{padding:70px 0 43px;margin-left:260px;border-bottom:1px solid var(--line)}.article-header .eyebrow{margin-bottom:22px}.article-header h1{font-size:clamp(38px,4.5vw,62px);line-height:1.15;letter-spacing:-.047em;max-width:860px}.article-deck{font-size:17px;line-height:1.8;color:var(--muted);margin-top:25px;max-width:720px}.article-meta{display:flex;flex-wrap:wrap;gap:7px 24px;color:var(--muted);font-size:10px;margin-top:31px}.reading-layout{display:grid;grid-template-columns:215px minmax(0,1fr);gap:45px;align-items:start;padding-block:48px 80px}.article-sidebar{position:sticky;top:129px;max-height:calc(100vh - 170px);overflow:auto;padding-right:10px}.table-of-contents .eyebrow{margin-bottom:24px}.table-of-contents ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}.table-of-contents a{font-size:11px;line-height:1.8;display:block;padding:8px 0 8px 17px;color:var(--muted);margin-left:-1px;border-left:2px solid transparent}.table-of-contents a:hover,.table-of-contents a[aria-current]{color:var(--ink);border-left-color:var(--accent)}.prose{min-width:0;font-size:16px;line-height:1.95;max-width:780px}.prose>h2:first-child{margin-top:0}.prose h2{font-size:29px;letter-spacing:-.03em;line-height:1.4;margin:53px 0 22px;scroll-margin-top:120px}.prose h3{font-size:23px;margin:34px 0 18px;line-height:1.4}.prose p{margin:0 0 21px;color:#455047}.prose strong{color:var(--ink);font-weight:700}.prose em{font-family:inherit;font-weight:inherit}.prose a:not(.text-link){text-decoration:underline;text-decoration-color:#a9b49b;text-underline-offset:4px;text-decoration-thickness:1px}.prose a:hover{color:var(--accent)}.prose ul,.prose ol{padding-left:25px;margin:20px 0}.prose li{padding-left:5px;margin:7px 0;color:#455047}.prose blockquote{margin:32px 0;padding:24px 30px;border-left:2px solid #8f9d7d;background:var(--sage)}.prose blockquote p{color:#344a39;margin:0;font-size:19px;line-height:1.85}.prose .table-scroll{overflow-x:auto;margin:29px 0;max-width:100%;border:1px solid var(--line);border-radius:3px}.prose table{border-collapse:collapse;width:100%;font-size:13px;line-height:1.8;text-align:left;min-width:440px}.prose th,.prose td{padding:17px 20px;border-bottom:1px solid var(--line);vertical-align:top}.prose th{background:var(--sage);font-weight:600;white-space:nowrap}.prose tr:last-child td{border-bottom:0}.prose td:first-child{width:31%}.prose pre{background:#e9ece1;padding:20px;overflow:auto;font-size:13px;border-radius:3px}.prose code{font-size:.9em;overflow-wrap:anywhere}.prose img{border-radius:3px;display:block;margin:28px auto;max-height:900px;object-fit:contain}.prose details{border-top:1px solid var(--line);padding:14px 0;font-size:13px}.prose summary{cursor:pointer;font-weight:600;line-height:1.7}.prose details p{margin:14px 0 0}.prose details ul{margin-top:10px}.sources>ol{list-style:none;padding:0;counter-reset:source}.sources>ol>li{counter-increment:source;border-top:1px solid var(--line);padding:22px 0;scroll-margin-top:120px}.sources>ol>li:before{content:'[' counter(source) ']';font-size:12px;color:var(--accent);margin-right:10px}.sources>ol>li>a{font-size:14px}.sources>ol>li>p{font-size:12px;margin:12px 0;color:var(--muted)}.sources details{border-top:0;padding:3px 0}.metadata-list{display:grid;grid-template-columns:auto 1fr;gap:10px 22px;font-size:12px}.metadata-list dt{color:var(--muted)}.metadata-list dd{margin:0}.research-details{border-top:1px solid var(--line);margin-top:42px;padding-top:8px}.reading-progress{position:fixed;height:2px;top:88px;left:0;width:100%;z-index:32;pointer-events:none}.reading-progress span{display:block;height:100%;background:var(--accent);width:100%;transform:scaleX(0);transform-origin:left}.article-end{border-top:1px solid var(--line);margin-top:58px;padding-top:26px;display:flex;align-items:center;justify-content:space-between}.end-mark{font-size:27px;color:#728663}
.search-dialog{border:1px solid var(--line);border-radius:7px;padding:26px;width:min(630px,calc(100% - 40px));max-height:min(75vh,720px);margin:13vh auto auto;background:var(--paper);box-shadow:0 24px 100px #172c2330}.search-dialog::backdrop{background:#17251d55;backdrop-filter:blur(5px)}.search-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.search-heading h2{font-size:20px;letter-spacing:-.025em}.search-close{font-size:27px}#site-search{width:100%;min-height:52px;border:1px solid #aeb8a0;border-radius:3px;background:#fafbf6;padding:12px 15px;font-size:15px}.search-status{font-size:11px;color:var(--muted);margin:19px 0 12px}.search-results{list-style:none;padding:0;margin:0}.search-results li{border-top:1px solid var(--line)}.search-results a{display:block;padding:15px 8px;font-size:15px}.search-results a:hover{background:var(--sage)}.search-results small{display:block;color:var(--muted);font-size:11px;margin-top:5px;line-height:1.7}.error-page{padding:100px 0 130px;min-height:70vh}.error-page h1{font-size:clamp(42px,5vw,70px);max-width:780px;margin:27px 0}.error-page>p:not(.eyebrow){max-width:570px;font-size:17px;color:var(--muted)}.error-page .button{margin-top:35px}
:lang(zh-CN){word-break:normal;overflow-wrap:break-word}:lang(zh-CN) h1,:lang(zh-CN) h2,:lang(zh-CN) h3{letter-spacing:-.02em;font-weight:500}:lang(zh-CN) .hero h1{font-size:clamp(51px,5.1vw,74px);line-height:1.32;letter-spacing:-.04em;font-weight:500}:lang(zh-CN) .hero h1 em{font-family:var(--sans);font-style:normal;font-size:1em;font-weight:500;color:#466247}:lang(zh-CN) .hero-description{max-width:400px;line-height:2}:lang(zh-CN) .eyebrow{letter-spacing:.12em}:lang(zh-CN) .method-intro h2{font-size:49px;line-height:1.4}:lang(zh-CN) .method-intro h2 em{font-family:var(--sans);font-style:normal;font-size:1em}:lang(zh-CN) .prose{line-height:2.1;font-size:17px}:lang(zh-CN) .prose h2{font-size:28px}:lang(zh-CN) .article-header h1{line-height:1.4;font-size:clamp(34px,3.8vw,52px)}:lang(zh-CN) .table-of-contents a{font-size:12px;line-height:1.9}:lang(zh-CN) .article-deck{line-height:2}:lang(zh-CN) .topic-card h3{font-size:23px}:lang(zh-CN) .opening-note h2{font-size:34px}
@media(min-width:1450px){.hero{min-height:710px}.hero-actions{flex-direction:row;align-items:center;gap:24px}.hero-actions .text-link{font-size:11px}.hero-art{margin-left:0}.hero-description{max-width:460px}}
@media(max-width:1150px){.container,.header-inner{width:calc(100% - 72px)}.desktop-nav{gap:24px;margin-right:15px}.hero{min-height:610px;gap:10px}.hero h1{font-size:65px}.hero-art{margin-left:-20px}.method-layout{gap:65px}.topic-inline>a{font-size:10px;gap:8px}.topic-inline>a+a{padding-left:14px}.topic-card{padding:23px}.topic-card h3{font-size:20px}.topic-inline .icon{width:19px;height:19px}.article-header{margin-left:225px}.reading-layout{grid-template-columns:185px minmax(0,1fr);gap:40px}.method-decoration{display:none}.footer-links{gap:18px 30px}}
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