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@media(min-width:1450px){.feature-card{min-height:420px}.feature-copy h2{font-size:37px}}
@media(max-width:1100px){.container{width:calc(100% - 48px)}.header-main{gap:22px}.nav{gap:16px}.nav a{font-size:12px}.brand-en{font-size:26px}.feature-card{grid-template-columns:1.2fr .9fr}.feature-copy{padding-left:25px}.feature-copy h2{font-size:28px}.content-grid{gap:28px}.article-layout{gap:30px;grid-template-columns:minmax(0,1fr) 230px}.article-main{padding:30px}.topic-tile{padding:17px 14px;gap:10px}.topic-tile p{font-size:9px}}
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@media(max-width:520px){.container{width:calc(100% - 30px)}.topbar .container{padding:7px 0}.topbar .edition-date{display:none}.intro-band h1{font-size:28px}.intro-band p{font-size:12px}.feature-card{grid-template-columns:1fr;min-height:0}.feature-copy{padding:25px}.feature-copy h2{font-size:28px;max-width:310px;margin-top:15px}.feature-copy p{max-width:100%;margin-bottom:18px}.feature-visual{height:210px;border-top:1px solid #d7dfd2}.feature-visual svg{height:260px;top:-27px}.visual-caption{bottom:14px;font-size:8px}.topic-tile{padding:16px 12px}.topic-tile h3{font-size:11px}.topic-tile p{font-size:9px}.topic-tile svg{width:23px}.news-row{grid-template-columns:92px 1fr;gap:15px;padding:22px 0}.thumb{height:95px}.thumb svg{width:78px;height:78px}.news-row h3{font-size:15px;margin:4px 0 8px}.news-row p{display:none}.news-row .article-meta{gap:7px;font-size:9px}.news-row .partner-label{display:inline-block}.sidebar-content{grid-template-columns:1fr;gap:28px}.guide-banner{padding:25px;align-items:start;flex-direction:column;margin-bottom:40px}.guide-banner h2{font-size:22px}.footer-top{grid-template-columns:1fr 1fr;gap:25px}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column;gap:6px}.footer{padding-top:30px}.category-grid{grid-template-columns:1fr;gap:20px}.page-title h1{font-size:31px}.category-card .thumb{height:150px}.article-main{padding:23px 20px}.article-title h1{font-size:28px}.article-title .description{font-size:13px}.article-title .article-meta{font-size:10px;gap:10px}.prose{font-size:14px;line-height:2.05}.prose h2{font-size:22px;margin-top:33px}.prose h3{font-size:17px}.disclosure{font-size:10px;padding:11px 13px}.toc ol{max-height:115px;overflow:auto}.related-grid{grid-template-columns:1fr}.related-grid .category-card:last-child{display:flex}.related-grid .category-card .thumb{height:110px}.related-grid .category-card .thumb svg{width:90px}.plain-page .prose{padding:23px 20px}.search-panel{padding:22px}.crumbs{padding:20px 0;font-size:10px}}
@media(max-width:820px){html:not(.js) .header-main{flex-wrap:wrap;padding-top:15px;padding-bottom:12px}html:not(.js) .nav{display:flex;position:static;flex-basis:100%;order:3;border:0;padding:8px 0 0;gap:10px 17px}html:not(.js) .header-actions{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media print{.site-header,.topbar,.footer,.toc,.related,.article-tools,.reading-progress,.crumbs,dialog{display:none!important}.container{width:100%}.article-layout{display:block;margin:0}.article-main{border:0;padding:0}.article-title h1{font-size:25px}.article-title{max-width:none;padding:0}.prose{font-size:11pt;line-height:1.7}.prose h2{font-size:16pt;break-after:avoid}.prose h3{break-after:avoid}body{background:white}.table-wrap{overflow:visible}.prose table{min-width:0}a{color:inherit}.prose p{orphans:3;widows:3}}

.feature-visual svg{max-width:270px;max-height:270px;inset:0;margin:auto}.feature-copy .article-meta{margin:0 0 18px}

/* Readable layouts and controls across phone, tablet and desktop widths. */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
.feature-grid>*,.feature-card>*,.content-grid>*,.news-row>*,.topic-tile>*,.related-grid>*,.footer-top>*,.category-grid>*{min-width:0}
.article-title h1,.feature-copy h2,.news-row h3,.category-card h2,.source-box,.search-result,.topic-note{overflow-wrap:anywhere}
.article-tools{flex-wrap:wrap}
.icon-button{min-width:44px;width:44px;min-height:44px;height:44px;flex-shrink:0}
.tool-button,.outline-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center}
.toc-disclosure summary{font-size:13px;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;min-height:44px;border-top:2px solid var(--ink);cursor:pointer}
.toc-disclosure summary::-webkit-details-marker{display:none}
.toc-disclosure summary::after{content:"+";font-size:20px;color:var(--muted)}
.toc-disclosure[open] summary::after{content:"−"}
.toc-disclosure ol{padding-top:14px}
.search-field{font-size:16px}
.table-wrap{-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain}
@media screen and (max-width:820px){
 html{scroll-padding-top:92px}
 .site-header{padding-left:env(safe-area-inset-left,0px);padding-right:env(safe-area-inset-right,0px)}
 .header-main{position:static;gap:12px;min-height:76px}
 .nav{top:100%;padding:10px 18px;max-height:calc(100dvh - 110px);overflow-y:auto;overscroll-behavior:contain;box-shadow:0 8px 20px #1521260d}
 .nav.open{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 12px}
 .nav a{min-height:44px;display:flex;align-items:center;padding:10px 12px;border-radius:4px}
 .nav a:hover,.nav a.active{background:var(--pale)}
 .article-meta{font-size:12px;gap:8px 12px}
 .partner-label{font-size:11px;white-space:normal}
 .sidebar-feature{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 18px}
 .sidebar-feature .section-label{grid-column:1/-1}
 .pick{grid-template-columns:20px minmax(0,1fr);gap:8px;padding:14px 0}
 .pick h3{font-size:15px}.pick .article-meta{font-size:11px}
 .toc{padding:8px 18px}
 .toc-disclosure summary{border-top:0;font-size:14px}
 .toc ol{display:block;max-height:none;overflow:visible;padding-top:6px}
 .toc li{margin:0}.toc a{font-size:13px;display:block;padding:10px 0;min-height:44px;width:100%}
 .section-heading{gap:14px;flex-wrap:wrap}
 .section-heading h2{font-size:23px}
 .search-panel{max-height:85vh;max-height:85dvh}
 .toast{max-width:calc(100% - 32px);width:max-content;text-align:center;bottom:calc(18px + env(safe-area-inset-bottom,0px))}
}
@media screen and (max-width:640px){
 .container{width:calc(100% - 32px)}
 .brand-en{font-size:25px}.brand-zh{font-size:10px}.wordmark{gap:8px}.header-actions{gap:6px}
 .intro-band{padding-top:26px}.intro-band h1{font-size:28px}.intro-band p{font-size:14px;line-height:1.8}
 .feature-card{grid-template-columns:minmax(0,1fr);min-height:0}
 .feature-copy{padding:23px}.feature-copy h2{font-size:27px;line-height:1.55;max-width:none;margin:14px 0}
 .feature-copy p{font-size:14px;max-width:none;line-height:1.85}.feature-copy .text-link{min-height:44px}
 .feature-visual{height:165px;border-top:1px solid #d7dfd2}
 .feature-visual svg{width:140px;height:140px;max-height:140px;inset:0;margin:auto}
 .visual-caption{font-size:9px;bottom:8px;left:0;right:0;text-align:center}
 .sidebar-feature{grid-template-columns:minmax(0,1fr);margin-top:6px;gap:0}
 .pick{grid-template-columns:24px minmax(0,1fr);gap:12px}.pick h3{font-size:16px;line-height:1.65}
 .topic-tile{padding:16px 12px;gap:10px}.topic-tile h3{font-size:13px}.topic-tile p{font-size:11px;line-height:1.6}
 .content-grid{padding-top:30px;padding-bottom:36px}
 .news-row{grid-template-columns:72px minmax(0,1fr);gap:14px;padding:23px 0}
 .news-row>.thumb{height:82px}.news-row>.thumb svg{width:68px;height:68px}
 .news-row h3{font-size:17px;line-height:1.65;margin:5px 0 10px}.news-row .eyebrow{font-size:11px;letter-spacing:.05em}
 .news-row p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:13px;line-height:1.8;margin-bottom:11px}
 .news-row .article-meta{font-size:11px;line-height:1.7;gap:6px 10px}.news-row .partner-label{font-size:10px}
 .category-grid,.related-grid{grid-template-columns:minmax(0,1fr);gap:20px}
 .related-grid .category-card:last-child{display:flex}
 .category-card-copy{padding:21px}.category-card p{font-size:14px}.category-card h2{font-size:20px;line-height:1.65}
 .article-title h1{font-size:27px;line-height:1.55;letter-spacing:0}.article-title .description{font-size:15px;line-height:1.9}
 .article-title .article-meta{font-size:12px;gap:9px 12px;line-height:1.8}
 .article-main{padding:25px 21px}.prose{font-size:16px;line-height:1.95}.prose h2{font-size:23px;line-height:1.6}.prose h3{font-size:19px}
 .disclosure{font-size:12px;line-height:1.85;padding:13px 14px}.source-box{font-size:13px;line-height:1.9}
 .tool-button{font-size:13px;padding:10px 13px}.article-tools{gap:8px}
 .sidebar-content{grid-template-columns:minmax(0,1fr)}.edition-card p,.glossary p{font-size:14px}.glossary summary{font-size:15px;min-height:44px;align-items:center}
 .guide-banner{padding:25px;flex-direction:column;align-items:start}.guide-banner p{font-size:14px;line-height:1.8}
 .footer-links{font-size:13px}.footer-links a{min-height:40px;display:flex;align-items:center}.footer-bottom{font-size:11px;line-height:1.8}
 .search-panel{padding:22px 18px;width:calc(100% - 24px)}.search-hint{font-size:12px;line-height:1.8}.search-result h3{font-size:17px;line-height:1.7}.search-result p{font-size:13px;line-height:1.8}
 .plain-page .prose{padding:25px 21px}
}
@media screen and (max-width:360px){
 .container{width:calc(100% - 28px)}.brand-en{font-size:23px}.header-main{gap:8px}.header-actions{gap:4px}
 .news-row{grid-template-columns:58px minmax(0,1fr);gap:12px}.news-row>.thumb{height:68px}.news-row>.thumb svg{width:54px;height:54px}
 .article-main,.plain-page .prose{padding:23px 17px}.topic-tile{padding:14px 9px;gap:8px}.topic-tile svg{width:21px}
}
@media print{.toc-disclosure{display:none}}
.article-image{margin:28px 0;max-width:100%}.article-image img{display:block;max-width:100%;height:auto;margin:0 auto;border-radius:4px}.article-image figcaption{font-size:12px;line-height:1.7;color:var(--muted);text-align:center;margin-top:10px}.prose td .article-image,.prose th .article-image{margin:8px 0}