:root{--pine:#173d33;--pine-hover:#285546;--ink:#162d26;--muted:#4e655b;--paper:#e7ece8;--inset:#d6e0d8;--line:#b8c9bd;--coral:#f2aa92;--light:#edf3ed;--dark-line:#426257}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC","Segoe UI",sans-serif;font-size:16px;line-height:1.75;letter-spacing:0}h1,h2,h3,p,figure{margin:0}h1,h2,h3{line-height:1.5;overflow-wrap:anywhere}h1{font-size:34px}h2{font-size:26px}h3{font-size:21px}a{color:inherit;text-decoration:none}a:hover{color:var(--pine-hover)}p{overflow-wrap:anywhere}img{display:block;max-width:100%;object-fit:cover}button,input{font:inherit}button{cursor:pointer}input{min-width:0}a,button,input,summary{touch-action:manipulation}a,button{transition:color .16s,background-color .16s,border-color .16s}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #b35b3d;outline-offset:4px}::selection{background:var(--coral);color:var(--ink)}.container{max-width:1320px;width:100%;padding:0 40px;margin:0 auto}.icon{width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center;vertical-align:middle;flex-shrink:0}.icon svg{width:100%;height:100%;stroke-width:1.8}.icon-button{width:46px;height:46px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;padding:0;background:transparent;border:0;color:inherit;border-radius:4px}.icon-button:hover{background:var(--inset);color:var(--ink)}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;border:1px solid transparent;border-radius:4px;padding:11px 21px;font-size:14px;font-weight:600;line-height:1.5}.button-primary{background:var(--pine);color:var(--light)}.button-primary:hover{background:var(--pine-hover);color:var(--light)}.button-accent{background:var(--coral);color:var(--ink)}.button-accent:hover{background:#ffc2ab;color:var(--ink)}.round-link{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:54px;height:54px;border:1px solid currentColor;border-radius:50%}.round-link:hover{background:var(--coral);color:var(--ink);border-color:var(--coral)}.text-link{display:inline-flex;gap:10px;align-items:center;min-height:38px;font-size:14px;color:var(--pine);font-weight:600}.text-link:hover{text-decoration:underline;text-underline-offset:5px}.small{font-size:13px}.muted{color:var(--muted)}.eyebrow{font-size:12px;line-height:1.5;font-weight:600;margin-bottom:12px;color:var(--pine)}.section{padding:52px 0}.section-heading{display:flex;gap:24px;align-items:center;justify-content:space-between;margin-bottom:28px}.section-heading .eyebrow{margin-bottom:8px}.section-heading>p{font-size:14px;color:var(--muted)}.inset-band{background:var(--inset)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;margin:-1px;padding:0;border:0}.skip-link{position:fixed;top:-100px;left:20px;padding:12px 20px;background:var(--coral);color:var(--ink);z-index:100}.skip-link:focus{top:12px}
.room-header{background:var(--pine);color:var(--light);border-bottom:1px solid var(--dark-line)}.header-row{min-height:96px;display:flex;gap:28px;align-items:center;justify-content:space-between}.brand{display:inline-flex;flex-shrink:0}.brand img{width:250px;height:50px;object-fit:contain}.room-nav{display:flex;gap:28px;align-items:center;margin-left:auto}.room-nav>a{font-size:14px;padding:14px 0;position:relative}.room-nav>a:hover{color:var(--coral)}.room-nav>a[aria-current]{color:var(--coral)}.room-nav>a[aria-current]:after{content:"";width:5px;height:5px;background:var(--coral);position:absolute;bottom:4px;left:calc(50% - 2px);border-radius:50%}.header-actions{display:flex;align-items:center;gap:12px}.nav-toggle,.menu-close{display:none}.opening{padding:32px 0 30px;background:var(--pine);color:var(--light)}.opening-meta{display:flex;justify-content:space-between;gap:20px;font-size:11px;color:#bfd1c4;margin-bottom:26px}.opening h1{font-size:34px;max-width:1100px;margin-bottom:12px}.opening-description{font-size:17px;color:#bfd1c4}.room-search{display:flex;align-items:center;gap:12px;max-width:720px;margin:26px 0 24px;border-bottom:1px solid #90ac9b;min-height:50px}.room-search input{flex:1;width:0;border:0;background:transparent;color:var(--light);padding:10px 0;font-size:16px}.room-search input::placeholder{color:#b4c9bb}.room-search .icon-button{color:var(--coral)}.room-search .icon-button:hover{background:var(--pine-hover)}.opening-bottom{display:flex;gap:20px;align-items:center;justify-content:space-between;font-size:12px;color:#bfd1c4}.opening-bottom>a{display:inline-flex;gap:12px;align-items:center;min-height:38px;color:var(--coral)}.topic-strip{background:var(--inset);border-bottom:1px solid var(--line);scroll-margin-top:0}.topic-strip>.container{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}.topic-strip a{display:flex;gap:16px;align-items:center;min-height:106px;padding:20px 26px;border-left:1px solid var(--line)}.topic-strip a:first-child{padding-left:0;border-left:0}.topic-strip a:last-child{padding-right:0}.topic-strip a>.icon:first-child{width:27px;height:27px}.topic-strip strong{display:block;font-size:16px;font-weight:600}.topic-strip small{display:block;font-size:11px;color:var(--muted);margin-top:3px}.topic-strip a>.icon:last-child{width:17px;height:17px;margin-left:auto}.focus-image{display:block;aspect-ratio:3.1;overflow:hidden}.focus-image img{width:100%;height:100%;object-position:center 50%}.focus-caption{background:var(--pine);color:var(--light);display:flex;gap:32px;align-items:center;justify-content:space-between;padding:26px 32px}.focus-caption .eyebrow{color:var(--coral);margin-bottom:10px}.focus-caption h3{font-size:25px;margin-bottom:10px}.focus-caption h3 a:hover{color:var(--coral)}.focus-caption p:not(.eyebrow){font-size:14px;color:#bfd1c4;max-width:900px;line-height:1.9}.focus-caption .round-link{color:var(--coral)}.identity-line{display:flex;gap:12px;align-items:center;font-size:12px;color:var(--muted);border-bottom:1px solid var(--line);padding:18px 0 20px}.identity-line>a{display:inline-flex;gap:6px;align-items:center;margin-left:auto;white-space:nowrap;color:var(--pine)}.identity-line .icon{width:17px;height:17px}.reading-columns{display:grid;grid-template-columns:minmax(0,1fr) 284px;gap:52px}.reading-columns>*{min-width:0}.reading-item{display:grid;grid-template-columns:230px minmax(0,1fr);gap:26px;padding:28px 0;border-bottom:1px solid var(--line)}.reading-item:first-child{padding-top:0}.reading-thumb{display:block;aspect-ratio:1.3;overflow:hidden;align-self:start}.reading-thumb img{width:100%;height:100%;object-position:center 60%}.reading-meta{display:flex;gap:18px;align-items:center;font-size:12px;color:var(--muted);margin-bottom:10px}.reading-meta a{color:var(--pine)}.reading-item h3{font-size:20px;margin-bottom:10px}.reading-item p{font-size:14px;color:var(--muted);line-height:1.9;margin-bottom:8px}.reading-item .text-link{font-size:13px}.desk-note{border-top:3px solid var(--pine);padding-top:24px}.desk-note h2{font-size:28px;line-height:1.65;margin-bottom:20px}.desk-note>p:not(.eyebrow){font-size:14px;line-height:1.95;color:var(--muted)}.desk-note ol{list-style:none;padding:0;margin:24px 0 14px}.desk-note li{border-top:1px solid var(--line);display:flex;gap:14px;font-size:13px;padding:13px 0}.desk-note li span{font-size:11px;color:var(--pine)}.desk-note img{width:100%;height:auto;aspect-ratio:1.25;margin-top:24px;object-position:center 70%}.keyword-catalog{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:30px}.keyword-catalog section{border-top:2px solid var(--pine);padding-top:20px;min-width:0}.keyword-catalog h3{font-size:18px;display:flex;gap:12px;align-items:center;justify-content:space-between;margin-bottom:18px}.keyword-catalog h3 span{font-size:12px;color:var(--muted);font-weight:400}.keyword-catalog section>a{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:48px;border-top:1px solid var(--line);padding:10px 0;font-size:13px;overflow-wrap:anywhere}.keyword-catalog .icon{width:14px;height:14px}.document-band{background:#bdcfc0;padding:40px 0}.document-band>.container{display:flex;align-items:center;justify-content:space-between;gap:32px}.document-band h2{font-size:27px;margin:12px 0}.document-band p{font-size:14px;color:var(--muted)}.document-band>div>div>.icon{width:28px;height:28px}
.breadcrumb{font-size:12px;color:var(--muted);display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding:22px 0;line-height:1.8}.breadcrumb>span:last-child{overflow-wrap:anywhere}.page-heading{background:var(--inset);padding-bottom:35px;border-bottom:1px solid var(--line)}.page-heading .eyebrow{margin-top:18px}.page-heading h1{font-size:34px;margin:12px 0 16px}.page-heading p:not(.eyebrow){font-size:16px;line-height:1.9;color:var(--muted);max-width:800px}.page-heading .text-link{margin-top:20px}.page-heading .button{margin-top:24px}.category-room{display:grid;grid-template-columns:minmax(0,1fr) 245px;gap:60px}.margin-note{border-left:2px solid var(--pine);padding-left:24px;align-self:start}.margin-note h2{font-size:24px;line-height:1.7;margin-bottom:20px}.margin-note p:not(.eyebrow){font-size:14px;color:var(--muted);line-height:1.95;margin-bottom:16px}.filter-tabs{display:flex;gap:10px 30px;flex-wrap:wrap;margin-bottom:32px;border-bottom:1px solid var(--line)}.filter-tabs a{display:flex;align-items:center;min-height:46px;font-size:14px;position:relative;padding-bottom:10px}.filter-tabs a[aria-current]{font-weight:700;color:var(--pine)}.filter-tabs a[aria-current]:after{content:"";height:3px;background:var(--pine);position:absolute;bottom:-1px;left:0;right:0}.document-list{border-top:1px solid var(--line)}.resource-card{display:flex;gap:30px;align-items:center;padding:30px 0;border-bottom:1px solid var(--line)}.document-icon{width:90px;height:112px;display:flex;align-items:center;justify-content:center;flex-shrink:0;border:1px solid var(--pine);background:var(--inset);border-radius:3px}.document-icon .icon{width:35px;height:35px}.resource-body{flex:1;min-width:0}.resource-body .eyebrow{margin-bottom:8px}.resource-body h3{font-size:24px;margin-bottom:10px}.resource-body>p:not(.eyebrow){font-size:14px;color:var(--muted);margin-bottom:12px}.resource-card>.round-link{margin-left:auto;width:48px;height:48px;background:var(--coral);border-color:var(--coral)}.download-note{display:flex;gap:18px;margin-top:36px;max-width:950px}.download-note>.icon{margin-top:4px}.download-note h2{font-size:20px;margin-bottom:10px}.download-note p{color:var(--muted);font-size:14px;line-height:1.9}.search-form{max-width:760px;margin-top:26px}.search-form label{display:block;font-size:13px;margin-bottom:10px}.search-input{display:flex;gap:12px}.search-input input{width:0;flex:1;padding:10px 16px;border:1px solid #7b9383;background:var(--paper);border-radius:4px;min-height:48px}.search-input .button{margin:0}.search-readings{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 40px}.search-readings .reading-item{grid-template-columns:150px minmax(0,1fr);gap:22px;padding:0 0 26px}.search-readings .reading-item h3{font-size:18px}.search-readings .reading-item p{font-size:13px}.empty-state{padding:35px 0 70px;text-align:center}.empty-state>.icon{width:36px;height:36px;margin-bottom:20px}.empty-state h2{margin-bottom:12px}.empty-state p{color:var(--muted);margin-bottom:20px}
.paper{padding-bottom:56px}.paper-heading{max-width:980px;margin:28px auto 34px;text-align:center}.paper-heading h1{font-size:34px;line-height:1.6;margin:16px 0 20px}.paper-deck{font-size:18px;line-height:1.9;color:var(--muted);max-width:860px;margin:auto}.paper-meta{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:24px}.paper-cover img{width:100%;height:auto;aspect-ratio:2.6;object-position:center 58%}.paper-cover figcaption{display:flex;gap:12px;align-items:center;justify-content:space-between;font-size:11px;color:var(--muted);padding:14px 0}.paper-cover figcaption a{display:inline-flex;gap:6px;align-items:center}.paper-cover figcaption .icon{width:12px;height:12px}.paper-layout{display:grid;grid-template-columns:minmax(0,790px) 240px;gap:64px;justify-content:center;margin-top:30px;align-items:start}.paper-main{min-width:0}.takeaways{border-bottom:1px solid var(--line);padding-bottom:26px}.takeaways h2{font-size:20px;display:flex;align-items:center;gap:12px}.takeaways h2:before{content:"";width:6px;height:20px;background:#b35b3d}.takeaways ul{padding-left:18px;margin:16px 0 0;line-height:1.9;font-size:15px}.takeaways li+li{margin-top:7px}.article-body h2{font-size:25px;margin:34px 0 18px;scroll-margin-top:24px}.article-body p{font-size:17px;line-height:2.05;margin-bottom:20px}.case-note{background:var(--inset);border-left:3px solid #b35b3d;padding:24px 28px;margin:32px 0}.case-note .eyebrow{font-size:12px;margin-bottom:10px}.case-note h2{font-size:22px;margin:0 0 16px}.case-note p:last-child{font-size:16px;margin:0}.scope-note{display:flex;gap:14px;border-top:1px solid var(--line);padding-top:24px;margin-top:30px;font-size:13px;color:var(--muted)}.scope-note>.icon{margin-top:3px}.paper-sidebar{position:sticky;top:24px}.article-toc{border-top:3px solid var(--pine);padding-top:18px}.article-toc h2{font-size:16px;margin-bottom:15px}.article-toc a{display:flex;gap:12px;align-items:baseline;font-size:13px;line-height:1.8;padding:11px 0;border-bottom:1px solid var(--line)}.article-toc a span{color:var(--muted);font-size:11px}.paper-sidebar>.button{margin-top:24px;width:100%}.paper-sidebar>p{margin-top:12px;font-size:12px}.further-reading{margin-top:50px;border-top:1px solid var(--line);padding-top:28px}.further-reading h2{font-size:24px}.further-reading>div:last-child{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.further-reading>div:last-child>a{display:flex;gap:18px;align-items:flex-start;justify-content:space-between;border-top:2px solid var(--pine);padding-top:20px;font-size:17px;font-weight:600;line-height:1.8}.further-reading>div:last-child .icon{margin-top:5px}
.prose-room{display:grid;grid-template-columns:minmax(0,800px) 240px;gap:70px;justify-content:center;align-items:start}.prose h2{font-size:25px;margin:30px 0 16px}.prose h2:first-child{margin-top:0}.prose p{font-size:17px;line-height:2.05;margin-bottom:20px}.editorial-stamp{background:var(--pine);color:var(--light);padding:30px}.editorial-stamp>span{font-family:Georgia,serif;font-size:68px;color:var(--coral);line-height:1.2}.editorial-stamp p{font-size:15px;line-height:1.9;margin:20px 0}.editorial-stamp .text-link{color:var(--coral)}.faq-list{max-width:1100px}.faq-item{border-top:1px solid var(--line);padding:22px 0}.faq-item:last-child{border-bottom:1px solid var(--line)}.faq-item summary{display:flex;align-items:center;gap:20px;list-style:none;cursor:pointer;min-height:44px;font-size:18px;font-weight:600}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary>span{font-size:12px;color:var(--muted)}.faq-item summary>b{margin-left:auto;font-size:26px;font-weight:400}.faq-item[open] summary>b{transform:rotate(45deg)}.faq-item p{margin:20px 45px 6px;font-size:16px;line-height:2;color:var(--muted)}
.room-footer{background:var(--pine);color:var(--light);padding:48px 0 24px}.footer-top{display:grid;grid-template-columns:1fr 1.3fr;gap:70px;padding-bottom:35px}.footer-top>div>p{font-size:14px;margin:22px 0 12px;color:#bfd1c4}.footer-domain{font-size:14px;display:inline-flex;align-items:center;gap:12px;color:var(--coral);min-height:40px}.footer-domain:hover{color:var(--light)}.footer-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}.footer-links h2{font-size:14px;margin:8px 0 14px;color:var(--coral)}.footer-links a{display:block;font-size:13px;min-height:35px;color:#bfd1c4}.footer-links a:hover{color:var(--coral)}.footer-disclosure{display:flex;align-items:center;gap:30px;justify-content:space-between;border-top:1px solid var(--dark-line);border-bottom:1px solid var(--dark-line);padding:18px 0;font-size:12px;color:#bfd1c4}.footer-disclosure>a{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;color:var(--coral);min-height:36px}.footer-bottom{display:flex;justify-content:space-between;gap:25px;font-size:11px;color:#bfd1c4;padding-top:22px}
@media(max-width:1140px){.room-nav{gap:20px}.header-row{gap:20px}.brand img{width:220px;height:44px}.header-actions{gap:4px}.header-download{padding:10px 14px}.reading-columns{gap:32px;grid-template-columns:minmax(0,1fr) 250px}.reading-item{grid-template-columns:190px minmax(0,1fr);gap:22px}.keyword-catalog{gap:22px}.topic-strip a{padding:20px 18px;gap:12px}.topic-strip a>.icon:last-child{display:none}.paper-layout{gap:38px;grid-template-columns:minmax(0,1fr) 220px}.search-readings{grid-template-columns:minmax(0,1fr)}.search-readings .reading-item{grid-template-columns:230px minmax(0,1fr)}}
@media(max-width:980px){.header-search{display:none}.header-download{display:none}.reading-columns{grid-template-columns:minmax(0,1fr)}.desk-note{display:grid;grid-template-columns:1fr 1fr;gap:12px 32px}.desk-note .eyebrow,.desk-note h2,.desk-note>p,.desk-note ol,.desk-note>a{grid-column:1}.desk-note h2 br{display:none}.desk-note h2{margin:0}.desk-note ol{margin-top:8px}.desk-note img{grid-column:2;grid-row:1/6;height:100%;margin-top:0;aspect-ratio:auto}.keyword-catalog{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.category-room{gap:32px;grid-template-columns:minmax(0,1fr) 210px}.prose-room{gap:36px;grid-template-columns:minmax(0,1fr) 200px}.footer-top{gap:40px;grid-template-columns:1fr 1.3fr}.footer-links{gap:20px}.paper-cover img{aspect-ratio:2.2}}
@media(max-width:820px){.room-header .header-row{position:relative;min-height:84px;flex-wrap:wrap;gap:0}.brand img{width:240px;height:48px}.header-actions{margin-left:auto}.nav-toggle{display:inline-flex}.room-nav{display:none;order:3;width:100%;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:4px 0 18px}.room-nav>a{padding:12px 0}.room-nav>a[aria-current]:after{display:none}.room-header.is-menu-open .room-nav{display:flex}.room-header.is-menu-open .menu-open{display:none}.room-header.is-menu-open .menu-close{display:inline-flex}.opening h1{font-size:30px}.topic-strip a{gap:10px;padding:18px 12px}.topic-strip strong{font-size:14px}.topic-strip small{font-size:10px}.topic-strip a>.icon:first-child{width:22px;height:22px}.paper-layout{grid-template-columns:minmax(0,1fr) 190px;gap:28px}.paper-heading h1{font-size:30px}.paper-deck{font-size:17px}.category-room{grid-template-columns:minmax(0,1fr)}.category-room .margin-note{margin-top:10px}.further-reading>div:last-child{grid-template-columns:minmax(0,1fr);gap:20px}.further-reading>div:last-child>a{font-size:16px}.footer-top{grid-template-columns:minmax(0,1fr);gap:30px}}
@media(max-width:760px){.container{padding-left:20px;padding-right:20px}.section{padding:34px 0}.opening{padding:22px 0 24px}.opening-meta{font-size:10px;margin-bottom:22px}.opening h1{font-size:27px;line-height:1.6}.opening-description{font-size:15px}.room-search{margin-top:22px;margin-bottom:18px}.room-search input{font-size:16px}.opening-bottom{font-size:11px;gap:12px;flex-wrap:wrap}.opening-bottom>a{min-height:34px}.topic-strip>.container{grid-template-columns:repeat(2,minmax(0,1fr))}.topic-strip a{padding:18px 16px;min-height:88px;gap:14px}.topic-strip a:first-child,.topic-strip a:nth-child(3){padding-left:0;border-left:0}.topic-strip a:nth-child(2){padding-right:0}.topic-strip a:nth-child(-n+2){border-bottom:1px solid var(--line)}.topic-strip strong{font-size:15px}.topic-strip small{font-size:11px}.topic-strip a>.icon:first-child{width:24px;height:24px}.section-heading{gap:18px;margin-bottom:24px;align-items:flex-start}.section-heading 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