/* Section-specific reading and catalogue system. Poker styles remain untouched. */
.section-design{--sd-soft:rgba(29,107,105,.055);--sd-muted:#53615f;font-family:var(--sans),"Microsoft YaHei","PingFang SC",sans-serif}
.section-design :where(p,h1,h2,h3){text-wrap:pretty}
.section-design :where(a,button,summary):focus-visible{outline:2px solid var(--teal);outline-offset:5px}
.section-design :where(button,summary,a){-webkit-tap-highlight-color:transparent}
.section-design .section-shell{width:min(1160px,calc(100% - 56px))}
.sd-kicker{font:400 10px/1.6 var(--mono);letter-spacing:.12em;color:var(--teal);text-transform:uppercase;margin:0 0 16px}
.sd-hero .module-page-copy>p{font-size:16px;line-height:1.85;color:var(--sd-muted);max-width:370px;margin:24px 0 0}
.sd-hero .eyebrow-tracker{font-size:10px;line-height:1.8}
.sd-hero.page-hero--motion>.page-motion{min-height:0!important;min-width:0;overflow:hidden!important}
.sd-project-results .page-hero>.page-motion{min-height:0!important;min-width:0;overflow:hidden!important}
.sd-project-results .module-page-copy h1{font-size:clamp(40px,6vw,64px);line-height:1.2;letter-spacing:-.04em}
.sd-hero-index{display:flex;gap:20px;align-items:center;margin-top:40px}
.sd-hero-index>span{font:400 44px/1 var(--mono);letter-spacing:-.07em;color:var(--teal)}
.sd-hero-index>p{margin:0;font-size:13px;line-height:1.7}
.sd-hero-index small{font-size:11px;color:var(--sd-muted)}
.sd-catalog{padding:24px 0 96px}
.sd-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin:0 0 32px;padding-top:40px;border-top:1px solid var(--line)}
.sd-section-head h2{font-size:clamp(27px,3vw,40px);line-height:1.25;letter-spacing:-.04em;margin:0}
.sd-section-head .sd-kicker{margin-bottom:12px}
.sd-section-head>p{max-width:290px;font-size:14px;line-height:1.85;color:var(--sd-muted);margin:0}
.sd-topic-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-block:1px solid var(--line);margin-bottom:24px}
.sd-topic-strip>a{padding:22px 16px;text-decoration:none;color:var(--ink);border-right:1px solid var(--line);transition:background .2s}
.sd-topic-strip>a:first-child{padding-left:0}
.sd-topic-strip>a:last-child{border-right:0}
.sd-topic-strip>a:hover{background:var(--sd-soft)}
.sd-topic-strip span{display:block;font-size:18px;font-weight:600;margin-bottom:8px}
.sd-topic-strip small{font-size:12px;color:var(--sd-muted);line-height:1.6}
.sd-tags{border-bottom:1px solid var(--line)}
.sd-tags>summary{display:flex;align-items:center;gap:20px;min-height:52px;cursor:pointer;list-style:none;font-size:13px;color:var(--teal)}
.sd-tags>summary::-webkit-details-marker{display:none}
.sd-tags>summary:before{content:"+";font:20px var(--mono)}
.sd-tags[open]>summary:before{content:"−"}
.sd-tags>summary>span{margin-left:auto;font-size:11px;color:var(--sd-muted)}
.sd-tags .tag-filter{padding:8px 0 24px;margin:0;gap:8px}
.section-design .tag-chip{min-height:44px;display:inline-flex;align-items:center;padding:8px 12px;font-size:12px}
.sd-result-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:24px 0}
.sd-result-bar p{font-size:12px;line-height:1.8;margin:0;color:var(--sd-muted)}
.sd-result-bar p>span{margin-left:16px;font:10px var(--mono);color:var(--teal)}
.sd-clear{display:flex;min-height:44px;align-items:center;font-size:12px;color:var(--teal);text-underline-offset:5px}
.sd-guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.sd-anchor-alias{position:absolute;top:0;left:0;width:0;height:0;pointer-events:none}
.sd-guide{position:relative;min-width:0;display:flex;flex-direction:column;padding:32px;background:var(--surface-hover);border:1px solid var(--line);scroll-margin-top:32px;transition:background .2s,border-color .2s}
.sd-guide:hover{background:var(--paper);border-color:rgba(29,107,105,.4)}
.sd-guide-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}
.sd-guide-top>.sd-kicker{margin:0;color:var(--sd-muted)}
.sd-tool{display:grid;place-items:center;width:52px;height:52px;background:var(--teal);color:var(--paper);font:500 17px var(--mono);border-radius:4px}
.sd-tool img{display:block;max-width:32px;max-height:32px}
.sd-guide-topic{color:var(--teal);font:11px var(--mono);margin:0 0 12px}
.sd-guide h2{font-size:25px;line-height:1.5;letter-spacing:-.03em;margin:0 0 16px}
.sd-guide h2 a{color:var(--ink);text-decoration:none}
.sd-guide h2 a:after{position:absolute;inset:0;content:""}
.sd-guide-summary{font-size:15px;line-height:1.9;color:var(--sd-muted);margin-bottom:24px}
.sd-guide-goal{margin-top:auto;padding:18px 0;border-block:1px solid var(--line);display:grid;grid-template-columns:72px 1fr;align-items:start;gap:8px;font-size:13px;line-height:1.7}
.sd-guide-goal>span{color:var(--teal);font-size:11px;padding-top:2px}
.sd-guide-goal>p{margin:0}
.sd-inline-tags{display:flex;flex-wrap:wrap;gap:8px 12px;margin:20px 0;color:var(--teal)}
.sd-inline-tags>span{font-size:11px;line-height:1.8;overflow-wrap:anywhere}
.sd-guide footer,.sd-note footer{display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:11px;color:var(--sd-muted);margin-top:8px}
.sd-guide footer>a{position:relative;z-index:1}
.sd-guide footer time,.sd-note time{font:10px/1.7 var(--mono)}
.sd-arrow-link{display:flex;gap:16px;align-items:center;min-height:44px;text-decoration:none;color:var(--teal);font-size:12px}
.sd-arrow-link span{font-size:20px;color:var(--orange)}
.sd-subscribe{display:flex;align-items:center;justify-content:space-between;gap:32px;margin-top:64px;padding:32px 0;border-block:1px solid var(--line)}
.sd-subscribe h3{font-size:24px;margin:0 0 12px}
.sd-subscribe p:last-child{font-size:14px;color:var(--sd-muted);margin:0}
.sd-subscribe>a{min-height:44px;display:flex;align-items:center}
.sd-knowledge-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:56px;border-top:1px solid var(--line);padding-top:32px}
.sd-subjects{position:sticky;top:32px;align-self:start}
.sd-subjects h2{font-size:23px;letter-spacing:-.03em;margin:0 0 28px}
.sd-subjects nav{display:grid}
.sd-subjects nav a{display:flex;justify-content:space-between;align-items:center;min-height:52px;padding:12px 0;text-decoration:none;color:var(--sd-muted);font-size:14px;border-bottom:1px solid var(--line)}
.sd-subjects nav a>span{font:10px var(--mono);color:var(--teal)}
.sd-subjects nav a:is(:hover,.is-selected){color:var(--teal);font-weight:600}
.sd-related-guide{display:block;font-size:12px;line-height:2;color:var(--sd-muted);text-decoration:none;margin-top:40px}
.sd-related-guide strong{font-weight:500;color:var(--teal)}
.sd-note-list{min-width:0}
.sd-note{display:grid;grid-template-columns:40px minmax(0,1fr);gap:20px;padding:32px 0;border-bottom:1px solid var(--line);scroll-margin-top:32px}
.sd-note-number{font:12px/1.7 var(--mono);color:var(--orange);padding-top:2px}
.sd-note .sd-kicker{margin-bottom:12px;font-size:10px}
.sd-note h2{font-size:clamp(23px,2.3vw,30px);line-height:1.45;letter-spacing:-.04em;margin:0 0 16px}
.sd-note h2 a{color:var(--ink);text-decoration:none}
.sd-note h2 a:hover{color:var(--teal)}
.sd-note-summary{font-size:15px;line-height:1.9;color:var(--sd-muted);margin:0}
.sd-note footer a{display:inline-flex;align-items:center;min-height:44px;font-size:12px;color:var(--teal);text-decoration:none;margin-left:20px}
.sd-note footer a:hover{text-decoration:underline;text-underline-offset:5px}
.sd-maintenance{padding:32px 0 0 60px;color:var(--sd-muted)}
.sd-maintenance .sd-kicker{margin-bottom:12px}
.sd-maintenance h3{font-size:17px;margin-bottom:12px;color:var(--ink)}
.sd-maintenance>p:not(.sd-kicker){font-size:14px;line-height:1.85}
.sd-maintenance time{font:11px var(--mono)}
.sd-life-content{padding:16px 0 96px}
.sd-life .sd-hero>.module-page-copy>p{max-width:340px}
.sd-life-tabs{display:flex;gap:8px 28px;flex-wrap:wrap;border-bottom:1px solid var(--line);margin-bottom:32px}
.sd-life-tabs>a{display:flex;align-items:center;min-height:52px;color:var(--sd-muted);text-decoration:none;font-size:14px;position:relative;padding:0 4px}
.sd-life-tabs>a[aria-current="true"]{color:var(--teal)}
.sd-life-tabs>a[aria-current="true"]:after{content:"";position:absolute;bottom:-1px;left:0;right:0;height:2px;background:var(--orange)}
.sd-life-empty{position:relative;padding:48px;min-height:240px;background:var(--sd-soft)}
.sd-life-empty h3{font-size:clamp(22px,3vw,32px);line-height:1.5;font-weight:500;letter-spacing:-.03em;margin:24px 0 12px}
.sd-life-empty>p:not(.sd-kicker){font-size:14px;color:var(--sd-muted);margin:0;line-height:1.8}
.sd-empty-count{position:absolute;right:32px;bottom:24px;font:10px var(--mono);color:var(--sd-muted)}
.sd-empty-line{display:block;width:40px;height:1px;background:var(--orange);margin-top:24px}
.sd-back{display:inline-flex;align-items:center;min-height:44px;font-size:12px;color:var(--teal);text-decoration:none;gap:12px;margin-bottom:24px}
.sd-project-overview{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:56px 0}
.sd-project-overview .detail-copy{order:-1;min-width:0}
.sd-project-overview h1{font-size:clamp(32px,4vw,56px);letter-spacing:-.045em;line-height:1.25;margin:0 0 24px}
.sd-project-overview .detail-copy>p:not(.eyebrow){font-size:16px;line-height:1.85;color:var(--sd-muted)}
.sd-project-overview .detail-visual{min-height:0;height:auto;aspect-ratio:4/3;background:var(--surface)}
.sd-project-overview .detail-visual img{min-height:0;height:100%;width:100%;object-fit:contain;background:var(--surface)}
.sd-project-overview .detail-visual:after{pointer-events:none}
.sd-project-overview .detail-visual>span{bottom:auto;right:auto;height:auto;pointer-events:none}
.sd-project-overview .detail-grid{gap:12px;margin-bottom:24px}
.sd-project-overview .detail-grid>div{font-size:12px;line-height:1.8}
.sd-project-detail .article-shell{padding-top:24px}
.sd-project-layout{margin-top:24px;border-top:1px solid var(--line);padding-top:32px}
.sd-project-layout .article-body h2:first-of-type{margin-top:0;padding-top:0;border-top:0}
.sd-fact-table{display:grid;border-top:1px solid var(--line);margin:24px 0 48px}
.sd-fact-table>div{display:grid;grid-template-columns:80px minmax(0,1fr);gap:24px;border-bottom:1px solid var(--line);padding:16px 0;font-size:15px}
.sd-fact-table b{color:var(--teal);font-weight:500}
.sd-fact-table span{color:var(--sd-muted)}
.sd-practice-record{padding:24px;background:var(--sd-soft);margin:0 0 40px;scroll-margin-top:24px}
.sd-practice-record h2{font-size:23px!important;margin-bottom:12px}
.sd-practice-record time{font:11px var(--mono);color:var(--sd-muted);display:block;margin-bottom:20px}
.sd-project-layout .article-toc nav{display:grid}
.sd-project-layout .article-toc nav a{font-size:13px;line-height:1.7;color:var(--sd-muted);padding:10px 0;text-decoration:none;min-height:44px}
.sd-project-layout .article-toc nav a:hover{color:var(--teal)}
.section-design.sd-article .article-shell{padding-top:16px}
.section-design .article-back{min-height:44px;display:inline-flex;align-items:center}
.sd-reading-head{max-width:1040px;border-bottom:1px solid var(--line);padding-bottom:32px}
.sd-reading-head h1{font-size:clamp(30px,4.1vw,52px);line-height:1.4;letter-spacing:-.035em;max-width:880px;margin:20px 0 24px}
.sd-reading-head>.eyebrow{font-size:10px;line-height:2;color:var(--teal);max-width:850px}
.sd-reading-head>.article-summary{font-size:17px;color:var(--sd-muted);line-height:1.85;max-width:760px}
.sd-reading-head .article-meta{font-size:10px;gap:8px 24px;margin-bottom:24px}
.section-design .content-actions{gap:16px 24px}
.section-design .content-actions>a{display:inline-flex;align-items:center;min-height:44px;font-size:12px}
.sd-preparation{background:var(--sd-soft);padding:24px;margin-top:24px}
.sd-preparation h2{font-size:19px;margin-bottom:12px}
.sd-preparation>p:not(.sd-kicker){font-size:14px;color:var(--sd-muted);line-height:1.85;margin:0}
.sd-preparation .sd-kicker{margin-bottom:12px}
.sd-preparation .sd-inline-tags{margin-bottom:0}
.section-design .article-layout{grid-template-columns:220px minmax(0,760px);gap:56px}
.section-design .article-body{font-size:17px;line-height:1.85;max-width:760px;min-width:0;color:var(--ink)}
.section-design .article-body p{overflow-wrap:break-word}
.section-design .article-body h3[data-step]{font-size:25px;padding-top:24px;border-top:1px solid var(--line);margin-top:48px;line-height:1.5}
.section-design .article-toc{border-left:0;padding:0;top:24px;scrollbar-width:thin}
.section-design .article-toc summary{display:flex;align-items:center;min-height:48px;font-size:13px;color:var(--teal);list-style:none;border-bottom:1px solid var(--line)}
.section-design .article-toc summary::-webkit-details-marker{display:none}
.section-design .article-toc .eyebrow{display:none}
.section-design .article-toc .toc a{padding:12px 8px;min-height:44px;font-size:12px;color:var(--sd-muted);border-left:2px solid transparent}
.section-design .article-toc .toc a.is-current{margin-left:0;padding-left:8px;border-color:var(--orange);color:var(--teal);background:var(--sd-soft)}
.section-design .article-body pre{max-width:100%;border-radius:4px;padding-top:58px;font-size:13px}
.section-design .article-body .copy-code{min-height:44px;opacity:1}
.section-design .article-body .highlight{min-width:0;max-width:100%;overflow:hidden}
.section-design .article-body img{border-radius:4px;cursor:zoom-in}
.section-design .article-body .admonition{border:1px solid var(--line);border-radius:4px;background:var(--sd-soft);font-size:15px;padding:20px}
.section-design .article-body .admonition-title{color:var(--teal)}
.section-design .article-layout--single{display:block;max-width:880px;margin-inline:auto}
.sd-source-intro{padding:32px;background:var(--sd-soft);margin-bottom:32px}
.sd-source-intro h2{font-size:28px;border:0;margin:0 0 16px;padding:0}
.sd-source-intro p:last-child{font-size:15px;color:var(--sd-muted);margin:0}
.section-design .detail-resources{display:block;background:var(--surface);color:var(--ink);padding:24px;margin:24px 0 40px}
.section-design .detail-resources-heading .eyebrow{color:var(--teal)}
.section-design .detail-resources-heading h2{font-size:24px;border:0;padding:0;margin:0 0 24px}
.section-design .detail-resource{background:var(--paper)!important;color:var(--ink)!important;border-radius:4px!important;min-height:64px;text-decoration:none}
.section-design .detail-resource small,.section-design .detail-resource-index{color:var(--sd-muted)}
.section-design .detail-resource strong{color:var(--teal)}
.sd-faq{margin-top:48px}
.sd-faq details{border-bottom:1px solid var(--line)}
.sd-faq summary{padding:16px 32px 16px 0;cursor:pointer;font-size:15px;line-height:1.85;min-height:52px}
.sd-faq .admonition{margin:0 0 20px!important}
.section-design .discussion-hub{margin-top:48px}
.section-design .discussion-hub-heading h2{font-size:28px}
.section-design .article-related .notes-grid{grid-template-columns:1fr}
.section-design .article-related .note-card{background:transparent;border-bottom:1px solid var(--line);min-width:0}
.section-design .article-related h3{font-size:21px;line-height:1.5}
.section-design .article-related .note-card:hover{transform:none}
.sd-reading-progress{position:fixed;z-index:30;top:0;left:0;width:100%;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left;pointer-events:none}
.sd-image-dialog{border:0;background:var(--paper);color:var(--ink);padding:56px 24px 24px;max-width:calc(100vw - 40px);max-height:calc(100vh - 40px);border-radius:4px}
.sd-image-dialog::backdrop{background:rgba(10,20,23,.82)}
.sd-image-dialog>button{position:absolute;right:12px;top:8px;min-width:44px;min-height:44px;background:none;border:0;color:var(--ink);cursor:pointer;font-size:14px}
.sd-image-dialog img{display:block;max-width:100%;max-height:calc(100vh - 152px);object-fit:contain}
.sd-image-dialog p{margin:16px 0 0;font-size:13px;line-height:1.7}
.sd-redirect{width:min(640px,calc(100% - 48px));margin:18vh auto}
.sd-redirect h1{font-size:40px;line-height:1.4}
.sd-redirect>p{color:var(--sd-muted);line-height:1.85}
.sd-template-banner{background:var(--teal);color:var(--paper);padding:16px 28px;font-size:13px;line-height:1.8}
.sd-life-story{padding:40px 0 80px}
.sd-life-story>.article-head,.sd-life-story>.article-body,.sd-life-story>.discussion-hub{max-width:720px;margin-inline:auto}
.sd-life-story h1{font-size:clamp(32px,4vw,52px);line-height:1.4}
.sd-photo-placeholder{max-width:1040px;margin:40px auto;aspect-ratio:16/9;display:grid;align-content:center;justify-items:center;background:var(--surface);color:var(--sd-muted);font-size:14px;gap:20px}
.sd-photo-placeholder figcaption{font-size:12px;padding:16px}
.sd-photo-pair{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:32px 0}
.sd-photo-pair>div{aspect-ratio:4/5;background:var(--surface);display:grid;place-items:center;font-size:14px;color:var(--sd-muted)}
.sd-story-neighbors{max-width:720px;margin:48px auto;display:flex;justify-content:space-between;gap:24px;border-block:1px solid var(--line);padding:24px 0;font-size:12px;color:var(--sd-muted)}
@media(min-width:901px){.section-design .article-toc>details>summary{pointer-events:none}}
@media(max-width:1000px){.sd-knowledge-layout{gap:32px;grid-template-columns:180px minmax(0,1fr)}.sd-guide{padding:24px}.sd-guide h2{font-size:23px}.sd-note footer{align-items:flex-start;flex-direction:column}.sd-note footer a:first-child{margin-left:0}.sd-project-overview{gap:32px}.section-design .article-layout{gap:32px;grid-template-columns:180px minmax(0,1fr)}}
@media(max-width:900px){
 .section-design .article-layout{grid-template-columns:1fr;gap:24px}
 .section-design .article-toc{position:static;max-height:none;border:1px solid var(--line);padding:0 16px}
 .section-design .article-toc summary:after{content:"+";margin-left:auto;font:18px var(--mono)}
 .section-design .article-toc details[open]>summary:after{content:"−"}
 .section-design .article-toc details:not([open])>summary{border-bottom:0}
 .sd-project-overview{grid-template-columns:1fr 1fr}
 .sd-project-overview .detail-visual{align-self:start;margin-top:56px}
}
@media(max-width:800px){
 .sd-hero-index{margin-top:24px}
 .sd-hero .module-page-copy>p{max-width:100%;font-size:15px}
 .sd-hero.page-hero--motion{gap:24px;padding:40px 0}
 .sd-hero.page-hero--motion>.page-motion{max-width:540px;justify-self:center}
 .sd-section-head{gap:20px;align-items:flex-start;flex-direction:column;padding-top:32px}
 .sd-section-head>p{max-width:none}
 .sd-topic-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
 .sd-topic-strip>a:first-child{padding-left:16px}
 .sd-topic-strip>a:nth-child(2){border-right:0}
 .sd-topic-strip>a:nth-child(-n+2){border-bottom:1px solid var(--line)}
 .sd-guide-grid{grid-template-columns:1fr}
 .sd-knowledge-layout{grid-template-columns:1fr;gap:24px}
 .sd-subjects{position:static}
 .sd-subjects h2{margin-bottom:16px}
 .sd-subjects nav{display:flex;flex-wrap:wrap;gap:8px 24px}
 .sd-subjects nav a{gap:16px;min-height:44px;border:0}
 .sd-subjects .sd-related-guide{margin-top:20px}
 .sd-note{grid-template-columns:28px minmax(0,1fr);gap:12px}
 .sd-note h2{font-size:24px}
 .sd-note footer{flex-direction:row;align-items:center;flex-wrap:wrap}
 .sd-maintenance{padding-left:40px}
 .sd-project-overview{display:flex;flex-direction:column;padding:40px 0;gap:32px}
 .sd-project-overview .detail-copy{width:100%}
 .sd-project-overview .detail-visual{width:100%;margin-top:0}
 .sd-project-overview .detail-visual img{min-height:0}
}
@media(max-width:540px){
 .section-design .section-shell{width:calc(100% - 40px)}
 .sd-catalog,.sd-life-content{padding-bottom:64px}
 .sd-hero .eyebrow-tracker{font-size:9px}
 .sd-hero-index>span{font-size:36px}
 .sd-guide{padding:24px 20px}
 .sd-guide h2{font-size:23px}
 .sd-guide-top{margin-bottom:24px}
 .sd-guide footer{align-items:flex-start;gap:12px;flex-wrap:wrap}
 .sd-guide-goal{grid-template-columns:64px minmax(0,1fr)}
 .sd-subscribe{flex-direction:column;align-items:flex-start;margin-top:40px;gap:16px}
 .sd-tags>summary{gap:12px}
 .sd-tags>summary>span{font-size:10px}
 .sd-life-empty{padding:32px 24px 56px;min-height:240px}
 .sd-empty-count{right:24px;bottom:20px}
 .sd-life-tabs{gap:8px 24px}
 .sd-reading-head{padding-bottom:24px}
 .sd-reading-head>.article-summary{font-size:16px}
 .sd-reading-head h1{font-size:30px}
 .sd-preparation{padding:20px}
 .section-design .article-body{font-size:16px}
 .section-design .article-body h3[data-step]{font-size:22px}
 .section-design .article-body pre{font-size:12px}
 .sd-practice-record{padding:20px}
 .sd-fact-table>div{grid-template-columns:56px minmax(0,1fr);gap:16px;font-size:14px}
 .sd-source-intro{padding:24px}
 .sd-source-intro h2{font-size:24px}
 .sd-photo-pair{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){.section-design *{scroll-behavior:auto!important}.sd-guide,.sd-topic-strip>a{transition:none}}