/* Shared case-study library and project dossier, using the site's theme tokens. */
@media(min-width:1101px){body:has(.case-dossier) .site-shell{max-width:1560px;padding-inline:56px}}
.case-library-hero{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:40px;padding:40px;border:1px solid var(--panel-border,var(--line));border-radius:var(--panel-radius,10px);align-items:center;background:var(--surface) var(--dot-grid);background-size:20px 20px}
.case-library-hero>div{min-width:0}
.case-library-hero h1{font:clamp(36px,4.4vw,58px)/1.15 var(--mono);letter-spacing:-2.2px;white-space:normal}
.case-library-hero h1>span{color:var(--accent)}
.case-library-hero .page-intro{margin-top:26px;font-size:17px;max-width:48ch}
.case-library-note{border:1px solid var(--line);border-radius:8px;padding:24px;margin:0;background-color:var(--panel-quiet,var(--surface))}
.case-bracket{display:block;font:40px/1.2 var(--mono);letter-spacing:5px;color:var(--accent);margin-bottom:16px}
.case-library-note p{color:var(--secondary);font:14px/1.85 var(--body)}
.case-note-caption{display:block;color:var(--muted);font:10px/1.8 var(--mono);margin-top:16px;overflow-wrap:anywhere}
.case-filters{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr) auto;align-items:end;gap:18px;margin:28px 0 24px;padding:22px 24px;border:1px solid var(--panel-border,var(--line));border-radius:var(--panel-radius,10px);background:var(--panel-quiet,var(--surface))}
.case-filters>div{min-width:0}
.case-filters label{display:block;color:var(--secondary);font:11px/1.8 var(--mono);margin-bottom:9px}
.case-filters input,.case-filters select{display:block;width:100%;min-width:0;margin:0;min-height:47px;padding:11px 13px;border:1px solid var(--line);border-radius:5px;color:var(--text);background:var(--surface);font:12px/1.8 var(--mono)}
.case-filters input::placeholder{color:var(--muted);font:12px/1.8 var(--body)}
.case-filters input:focus-visible,.case-filters select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.case-filters .button{width:auto;padding:0 16px;white-space:nowrap}
.case-clear{grid-column:1/-1;justify-self:start;white-space:nowrap;min-height:20px;padding:2px 0}
.case-results-summary{display:flex;align-items:center;justify-content:space-between;gap:15px;color:var(--muted);font:10px/1.8 var(--mono);margin:2px 0 20px}
.case-results-summary p{color:var(--secondary)}
.case-cards{display:grid;gap:28px}
.case-card{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:36px;border:1px solid var(--panel-border,var(--line));border-radius:var(--panel-radius,10px);padding:30px;background:var(--panel-quiet,var(--surface));transition:border-color .18s}
.case-card:hover{border-color:color-mix(in srgb,var(--accent) 65%,var(--line))}
.case-card-no-diagram{grid-template-columns:1fr}
.case-card-copy{min-width:0;display:flex;flex-direction:column;align-items:start}
.case-card-meta{display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;width:100%;justify-content:space-between;margin-bottom:24px}
.case-type{font:10px/1.65 var(--mono);color:var(--green);padding:5px 9px;border:1px solid color-mix(in srgb,var(--green) 40%,var(--line));border-radius:2px;display:inline-block}
.case-type-example{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 40%,var(--line))}
.case-file-number{font:10px/1.8 var(--mono);color:var(--muted)}
.case-card-classifications{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px 22px;width:100%;margin:0 0 23px}
.case-card-classifications>div{min-width:0}
.case-card-classifications dt{font:10px/1.8 var(--mono);color:var(--secondary);margin-bottom:5px}
.case-card-classifications dd{font:11px/1.8 var(--mono);color:var(--secondary);margin:0;overflow-wrap:anywhere}
.case-card h2{font:25px/1.45 var(--mono);letter-spacing:-.8px;max-width:28ch;overflow-wrap:anywhere}
.case-card h2 a:hover{color:var(--accent)}
.case-card-copy>p{font:14px/1.85 var(--body);color:var(--secondary);max-width:54ch;margin:17px 0 20px}
.case-card-copy>.text-link{color:var(--accent);margin-top:auto}
.case-card-diagram{align-self:center;border:1px solid var(--line);border-radius:3px;background:var(--bg) var(--dot-grid);background-size:18px 18px;padding:23px;min-width:0}
.case-terminal-label{font:10px/1.8 var(--mono);color:var(--muted);display:block}
.case-terminal-label>span{color:var(--accent);margin-right:7px}
.case-card-diagram ol{list-style:none;padding:7px 0 0;margin:13px 0 0}
.case-card-diagram li{display:grid;grid-template-columns:20px minmax(0,1fr) 15px;gap:13px;align-items:center;border-bottom:1px dashed var(--line);padding:17px 0;font:11px/1.7 var(--mono);color:var(--secondary)}
.case-card-diagram li>span:first-child,.case-card-diagram li>span:last-child{font-size:9px;color:var(--muted)}
.case-card-diagram li:last-child>span:last-child{color:var(--green)}
.case-diagram-caption{font:9px/1.8 var(--mono);color:var(--muted);margin-top:20px}
.case-empty{border:1px dashed var(--panel-border,var(--line));padding:32px;max-width:100%;background:var(--panel-quiet,var(--surface));border-radius:var(--panel-radius,10px)}
.case-empty h2{font:27px/1.4 var(--mono);letter-spacing:-1px;margin:23px 0 16px}
.case-empty p{font:15px/1.9 var(--body);color:var(--secondary);max-width:65ch;margin-bottom:15px}
.case-empty .text-link{color:var(--accent)}
.case-detail-hero{padding:58px 0 44px;max-width:1120px}
.case-detail-meta{display:flex;align-items:center;flex-wrap:wrap;gap:17px;margin-bottom:28px}
.case-detail-meta>span:last-child{font:10px/1.8 var(--mono);color:var(--muted)}
.case-detail-hero h1{font:clamp(36px,4.8vw,68px)/1.2 var(--mono);letter-spacing:-2.8px;white-space:normal;max-width:24ch;overflow-wrap:anywhere}
.case-detail-intro{font:20px/1.85 var(--body);color:var(--secondary);margin-top:29px;max-width:66ch;overflow-wrap:anywhere}
.case-published{font:10px/1.8 var(--mono);color:var(--muted);margin-top:20px}
.case-notice{display:flex;align-items:start;gap:17px;padding:22px 24px;border:1px solid var(--panel-border,var(--line));border-left:2px solid var(--accent);border-radius:var(--panel-radius,10px);background:var(--panel-warm,var(--surface))}
.case-notice strong{display:block;font:11px/1.8 var(--mono);color:var(--accent);font-weight:500}
.case-notice p{font:14px/1.85 var(--body);color:var(--secondary);margin-top:7px;max-width:66ch}
.case-notice-marker{display:grid;place-items:center;width:20px;height:20px;flex-shrink:0;border:1px solid var(--accent);border-radius:50%;font:11px/1 var(--mono);color:var(--accent);margin-top:2px}
.case-preview-notice{margin-top:25px;display:block;border-color:var(--green)}
.case-preview-notice strong{color:var(--green)}
.case-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:30px 0 0;padding:27px 0}
.case-metric{padding:5px 22px;border-left:2px solid var(--line);min-width:0}
.case-metric strong{display:block;font:34px/1.3 var(--mono);letter-spacing:-1.5px;color:var(--accent);overflow-wrap:anywhere}
.case-metric span{display:block;font:11px/1.8 var(--mono);color:var(--secondary);margin-top:12px;overflow-wrap:anywhere}
.case-metrics-note{grid-column:1/-1;font:11px/1.8 var(--mono);color:var(--secondary)}
.case-detail-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:76px;align-items:start;margin-top:56px}
.case-project-sidebar{position:sticky;top:28px;min-width:0}
.case-project-facts{border:1px solid var(--panel-border,var(--line));background:var(--panel-quiet,var(--surface));border-radius:var(--panel-radius,10px);padding:24px}
.case-project-facts dl{margin:26px 0 0}.case-project-facts dl>div+div{margin-top:24px}
.case-project-facts dt{color:var(--secondary);font:10px/1.8 var(--mono);margin-bottom:7px}
.case-project-facts dd{font:13px/1.85 var(--mono);color:var(--secondary);margin:0;overflow-wrap:anywhere}
.case-classification-link{display:inline-block;max-width:100%;color:var(--accent);text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--accent) 40%,transparent);text-underline-offset:4px}
.case-classification-link:hover{text-decoration-color:var(--accent)}
.case-stack{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}
.case-stack h2,.case-contents h2{font:10px/1.8 var(--mono);color:var(--secondary);margin:0 0 12px;letter-spacing:.2px}
.case-stack ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:7px}
.case-stack li{font:9px/1.8 var(--mono);border:1px solid var(--line);padding:3px 6px;color:var(--secondary);border-radius:2px;overflow-wrap:anywhere;max-width:100%}
.case-contents{padding:27px 0 0}
.case-contents a{display:flex;gap:12px;font:11px/1.8 var(--mono);color:var(--secondary);padding:9px 0}
.case-contents a>span{color:var(--muted)}.case-contents a:hover,.case-contents a:hover>span{color:var(--accent)}
.case-story{min-width:0}.case-story-section{scroll-margin-top:35px}
.case-story-section+.case-story-section{margin-top:64px;border-top:1px solid var(--line);padding-top:44px}
.case-story-section .section-kicker{font:9px/1.8 var(--mono);color:var(--accent);letter-spacing:.6px;margin-bottom:15px}
.case-story-section h2{font:30px/1.45 var(--mono);letter-spacing:-.9px;margin:0 0 24px}
.case-prose{font:17px/1.85 var(--body);color:var(--secondary);max-width:66ch;overflow-wrap:anywhere}
.case-prose p+p{margin-top:24px}
.case-workflow{list-style:none;padding:0;margin:25px 0 0}
.case-workflow li{display:grid;grid-template-columns:38px minmax(0,1fr);gap:24px;position:relative;padding-bottom:38px}
.case-workflow li:not(:last-child):before{content:'';position:absolute;width:1px;background:var(--line);top:39px;bottom:0;left:18.5px}
.case-workflow li:last-child{padding-bottom:0}
.case-workflow-index{display:grid;place-items:center;font:11px/1 var(--mono);border:1px solid var(--line);border-radius:3px;color:var(--accent);height:38px;background:var(--surface);position:relative}
.case-workflow h3{font:16px/1.8 var(--mono);padding-top:3px;overflow-wrap:anywhere}
.case-workflow p{font:15px/1.85 var(--body);color:var(--secondary);margin-top:10px;max-width:64ch;overflow-wrap:anywhere}
.case-story-section.case-outcomes{background:var(--panel-sage,var(--surface));padding:30px;border:1px solid var(--panel-border,var(--line));border-radius:var(--panel-radius,10px)}
.case-project-cta{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:center;padding:37px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:68px}
.case-project-cta .section-kicker{font:9px/1.8 var(--mono);color:var(--muted);margin-bottom:20px}
.case-project-cta h2{font:30px/1.4 var(--mono);letter-spacing:-1.5px}.case-project-cta h2>span{color:var(--accent)}
.case-project-cta p{font:14px/1.9 var(--body);color:var(--secondary);max-width:57ch;margin-top:18px}
.case-project-cta-actions{display:flex;flex-direction:column;align-items:start;gap:10px}
.case-project-cta-actions>.button{margin-bottom:6px}
@media(max-width:1100px){.case-card{padding:27px;gap:30px}.case-card h2{font-size:24px}.case-detail-layout{grid-template-columns:235px minmax(0,1fr);gap:40px}.case-project-facts{padding:21px}.case-library-hero{gap:30px}.case-library-note{padding-left:25px}.case-filters{gap:12px}.case-filters .button{font-size:10px;padding:0 12px}}
@media(max-width:850px){.case-card{gap:25px;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr)}.case-card-diagram{padding:17px}.case-card-diagram li{gap:8px;font-size:10px}.case-card-meta{margin-bottom:23px}.case-filters{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.case-search-field{grid-column:1/-1}.case-filters .button{font-size:11px;grid-column:1/-1;justify-self:start}.case-detail-layout{gap:30px;grid-template-columns:210px minmax(0,1fr)}.case-project-facts{padding:18px}.case-story-section h2{font-size:28px}.case-project-cta{grid-template-columns:1fr;gap:25px}.case-project-cta-actions{flex-direction:row;align-items:center;gap:18px;flex-wrap:wrap}.case-project-cta-actions>.button{margin-bottom:0}}
@media(max-width:700px){.case-library-hero{padding:37px 0 33px;grid-template-columns:1fr;gap:26px}.case-library-hero h1{font-size:40px;letter-spacing:-2px}.case-library-hero .eyebrow{font-size:9px;letter-spacing:.6px;margin-bottom:22px}.case-library-hero .page-intro{font-size:16px;margin-top:21px}.case-library-note{display:none}.case-desktop-break{display:none}.case-filters{padding:20px;gap:18px;margin:24px 0 22px;grid-template-columns:minmax(0,1fr)}.case-filters .button{width:100%;gap:12px;justify-content:center}.case-filters input,.case-filters select{font-size:11px}.case-clear{margin-left:0;min-height:20px;padding:2px 0}.case-results-summary{align-items:start;gap:12px;margin-bottom:18px}.case-results-summary>span{max-width:24ch;text-align:right;font-size:9px}.case-results-summary p{white-space:nowrap;font-size:9px}.case-card{grid-template-columns:minmax(0,1fr);gap:26px;padding:20px}.case-card h2{font-size:24px}.case-card-meta{margin-bottom:24px}.case-card-copy>p{margin:16px 0 15px}.case-card-diagram{padding:18px}.case-card-diagram li{font-size:11px;gap:14px}.case-diagram-caption{font-size:9px}.case-empty{padding:20px}.case-empty h2{font-size:23px}.case-detail-hero{padding:33px 0 26px}.case-detail-meta{margin-bottom:22px;gap:13px}.case-detail-meta>span:last-child{font-size:9px}.case-detail-hero h1{font-size:36px;letter-spacing:-1.8px}.case-detail-intro{font-size:17px;line-height:1.8;margin-top:23px}.case-notice{padding:17px 18px;gap:13px}.case-notice p{font-size:13px}.case-metrics{grid-template-columns:1fr 1fr;gap:20px 12px;padding:23px 0}.case-metric{padding:4px 15px}.case-metric strong{font-size:29px}.case-detail-layout{grid-template-columns:minmax(0,1fr);gap:40px;margin-top:32px}.case-project-sidebar{position:static}.case-project-facts{padding:20px}.case-project-facts dl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 18px;margin-top:22px}.case-project-facts dl>div+div{margin-top:0}.case-stack{margin-top:21px;padding-top:17px}.case-stack h2,.case-contents h2{font-size:10px}.case-contents{display:none}.case-story-section h2{font-size:25px}.case-story-section+.case-story-section{margin-top:40px;padding-top:30px}.case-prose{font-size:16px}.case-workflow li{gap:16px;padding-bottom:25px}.case-workflow h3{font-size:15px}.case-workflow p{font-size:14px}.case-story-section.case-outcomes{padding:20px}.case-project-cta{margin-top:43px;padding:30px 0;gap:23px}.case-project-cta h2{font-size:27px}.case-project-cta-actions{gap:12px 20px}.case-project-cta-actions>.button{font-size:11px}}
@media(prefers-reduced-motion:reduce){.case-card{transition:none}}

/* Keep the library introduction composed at intermediate and narrow widths. */
@media(max-width:1100px){
  .case-library-hero{gap:28px;padding:32px}
  .case-library-note{padding:22px}
}
@media(max-width:850px){
  .case-library-hero{grid-template-columns:minmax(0,1fr);gap:24px}
  .case-library-hero .page-intro{max-width:60ch}
  .case-library-note{display:grid;grid-template-columns:64px minmax(0,1fr);column-gap:18px;align-items:center;padding:20px}
  .case-bracket{grid-row:1/3;font-size:32px;letter-spacing:2px;margin:0}
  .case-note-caption{grid-column:2;margin-top:10px}
}
@media(max-width:700px){
  .case-library-hero{padding:24px 20px;gap:24px}
  .case-library-hero h1{font-size:clamp(30px,7vw,40px);letter-spacing:-1.5px}
  .case-library-note{grid-template-columns:44px minmax(0,1fr);column-gap:12px;padding:16px 14px}
  .case-bracket{font-size:23px;letter-spacing:0;white-space:nowrap}
  .case-library-note p{font-size:13px;line-height:1.75}
  .case-note-caption{font-size:9px;line-height:1.8}
}
.case-expansion{padding:52px 0;border-top:1px solid var(--line);scroll-margin-top:30px}
.case-expansion>h2{font:clamp(25px,3vw,36px)/1.3 var(--mono);letter-spacing:-1px;max-width:28ch}
.case-expansion-intro{max-width:70ch;color:var(--secondary);line-height:1.8;margin:18px 0 28px}
.case-module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.case-module{min-width:0;padding:28px;background:var(--surface);border:1px solid var(--line);border-radius:9px}
.case-module>.mini-label{color:var(--accent)}
.case-module h3,.case-implementation-note h3{font:20px/1.5 var(--mono);margin:14px 0;overflow-wrap:anywhere}
.case-module dl{margin:22px 0 0}.case-module dl>div{padding:18px 0 0;border-top:1px solid var(--line);margin-top:18px}
.case-module dt{font:11px var(--mono);color:var(--accent);margin-bottom:10px}.case-module dd{margin:0;color:var(--secondary);font-size:15px;line-height:1.8}.case-module dd p+p{margin-top:14px}
.case-notes-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:28px}
.case-implementation-note{min-width:0;padding:0 0 16px}.case-implementation-note h3{margin-top:0}
.project-diagram{margin:28px 0 0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--surface)}
.project-diagram figcaption{padding:25px 28px;border-bottom:1px solid var(--line)}.project-diagram figcaption .mini-label{color:var(--accent)}
.project-diagram h3{font:21px/1.5 var(--mono);margin:12px 0}.project-diagram figcaption p{font:14px/1.8 var(--body);color:var(--secondary);max-width:85ch}
.project-diagram-images{background:var(--bg)}.project-diagram-images img{display:block;width:100%;height:auto}.project-diagram-images .diagram-light{display:none}html[data-theme=light] .project-diagram-images .diagram-light{display:block}html[data-theme=light] .project-diagram-images .diagram-dark{display:none}
.diagram-text-view{border-top:1px solid var(--line);padding:20px 28px}.diagram-text-view summary{cursor:pointer;font:13px/1.6 var(--mono);color:var(--accent)}
.diagram-node-list{list-style:none;counter-reset:stage;padding:0;margin:24px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.diagram-node-list>li{counter-increment:stage;padding:20px;background:var(--bg);border:1px solid var(--line);border-radius:5px;min-width:0;scroll-margin-top:24px}
.diagram-node-list>li::before{content:counter(stage,decimal-leading-zero) " /";display:block;font:11px var(--mono);color:var(--accent);margin-bottom:10px}
.diagram-node-list strong{font:14px/1.65 var(--mono)}.diagram-node-list p,.diagram-node-list ul{font:13px/1.8 var(--body);color:var(--secondary);margin:12px 0 0;padding:0;list-style:none}.diagram-node-list ul li{margin-top:8px}.diagram-node-list a{text-decoration:underline;text-underline-offset:3px}.diagram-route-exception{border-left:2px solid var(--accent);padding-left:10px}.diagram-route-loop{color:var(--green)}
.diagram-downloads{display:flex;gap:16px;flex-wrap:wrap;padding:18px 28px;border-top:1px solid var(--line);font:11px/1.8 var(--mono);color:var(--secondary)}.diagram-downloads a{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.case-related-map{margin:22px 0 0;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.case-related-map>summary{font:15px/1.7 var(--mono);padding:24px;cursor:pointer;display:flex;justify-content:space-between;gap:20px}.case-related-map>summary span{color:var(--accent)}.case-related-map[open]>summary span{transform:rotate(45deg)}.case-related-map>.project-diagram{margin:0;border:0;border-top:1px solid var(--line);border-radius:0}
@media(max-width:800px){.case-module-grid,.case-notes-grid{grid-template-columns:1fr}.case-expansion{padding:36px 0}.case-module{padding:22px}.project-diagram figcaption{padding:22px}.diagram-node-list{grid-template-columns:1fr}.diagram-text-view{padding:18px}.diagram-downloads{padding:18px}.case-related-map>summary{padding:20px}.case-contents a{min-height:38px}}
.system-guide-layout{display:block}.system-guide-layout .toc{position:static;max-width:75ch;margin-bottom:38px}.system-guide-layout .article-content{max-width:none}.system-guide-layout .article-content section>p,.system-guide-layout .article-content section>ul{max-width:75ch}.project-diagram .diagram-node-list{padding:0}.project-diagram .diagram-node-list ul{padding:0}

/* Small previews keep the story flowing; the viewer provides the detail. */
.project-diagram-gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}
.project-diagram-gallery .project-diagram{margin:0;min-width:0}
.project-diagram-gallery .project-diagram h3{font-size:18px}
.project-diagram-gallery .project-diagram figcaption{padding:22px}
.project-diagram-gallery .project-diagram figcaption p{font-size:13px;line-height:1.75}
.diagram-preview{position:relative;display:block;padding:18px 18px 54px;background:var(--bg) var(--dot-grid);background-size:18px 18px;cursor:zoom-in;text-decoration:none!important}
.diagram-preview img{width:100%;height:240px;object-fit:contain;object-position:center;transition:filter .15s}
.diagram-preview:hover img{filter:brightness(1.08)}
.diagram-preview:focus-visible{outline:2px solid var(--accent);outline-offset:-3px}
.diagram-preview-action{position:absolute;left:50%;bottom:15px;transform:translateX(-50%);display:flex;align-items:center;gap:24px;white-space:nowrap;border:1px solid var(--line);border-radius:5px;padding:8px 14px;background:var(--surface);color:var(--text);font:11px var(--mono)}
.diagram-preview-action>span{color:var(--accent)}
.project-diagram-gallery .diagram-node-list{grid-template-columns:1fr}
.project-diagram-gallery .diagram-text-view,.project-diagram-gallery .diagram-downloads{padding:17px 22px}
.project-diagram-gallery .diagram-downloads{font-size:10px;gap:10px}
.system-guide-layout .project-diagram{max-width:660px}
html.diagram-viewer-open{overflow:hidden}
dialog.diagram-viewer{width:calc(100vw - 40px);max-width:1600px;height:calc(100dvh - 40px);max-height:1000px;margin:auto;padding:0;overflow:hidden;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text)}
.diagram-viewer[open]{display:flex;flex-direction:column}
.diagram-viewer::backdrop{background:#090908d9;backdrop-filter:blur(5px)}
.diagram-viewer-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;border-bottom:1px solid var(--line);background:var(--surface);flex:none}
.diagram-viewer-header h2{font:16px/1.5 var(--mono);letter-spacing:0;flex:1 1 260px;overflow-wrap:anywhere;margin:0}
.diagram-viewer-controls{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.diagram-viewer-controls button,.diagram-viewer-controls a{display:inline-flex;align-items:center;justify-content:center;min-height:40px;border:1px solid var(--line);border-radius:4px;padding:9px 12px;background:var(--bg);color:var(--text);font:11px/1.5 var(--mono);text-decoration:none;cursor:pointer}
.diagram-viewer-controls button:hover,.diagram-viewer-controls a:hover{border-color:var(--accent)}
.diagram-viewer-controls button:focus-visible,.diagram-viewer-controls a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.diagram-viewer-controls button:disabled{opacity:.4;cursor:default}
.diagram-viewer-controls button:last-child{color:var(--accent)}
.diagram-viewer-stage{flex:1;min-height:0;min-width:0;overflow:auto;overscroll-behavior:contain;padding:12px;background:var(--bg) var(--dot-grid);background-size:18px 18px}
.diagram-viewer-image{display:block;max-width:none;max-height:none;margin:auto}
@media(max-width:800px){.project-diagram-gallery{grid-template-columns:minmax(0,1fr);gap:20px}.diagram-preview img{height:210px}.project-diagram h3{font-size:18px}.diagram-viewer-header{padding:14px;gap:12px}.diagram-viewer-header h2{font-size:13px}.diagram-viewer-controls{gap:6px}.diagram-viewer-controls button,.diagram-viewer-controls a{font-size:10px;padding:9px;min-height:42px}dialog.diagram-viewer{width:calc(100vw - 16px);height:calc(100dvh - 16px);border-radius:7px}.diagram-viewer-stage{padding:8px}}
@media(prefers-reduced-motion:reduce){.diagram-preview img{transition:none}}