:root{--bg:#f7f8fa;--surface:#fff;--text:#20252c;--muted:#777e88;--line:#e3e6eb;--soft:#f1f3f6;--accent:#3954d6;--accent-soft:#edf0ff;--green:#3b8773;--radius:9px;color-scheme:light;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,"Noto Sans SC",sans-serif}html[data-theme=dark]{--bg:#17191d;--surface:#1e2127;--text:#eceef2;--muted:#9aa2ae;--line:#32363e;--soft:#272b33;--accent:#a3b1ff;--accent-soft:#272e49;--green:#87c4b1;color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}button,input,select{font:inherit;color:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;background:var(--surface);border:1px solid var(--line);border-radius:5px;padding:7px 11px}button:hover{border-color:var(--muted)}button:disabled{opacity:.4;cursor:default}a,button,input,select{outline-offset:4px}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent)}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35}h1{font-size:30px;letter-spacing:-1px;font-weight:650}h2{font-size:17px;letter-spacing:-.3px;font-weight:650}h3{font-size:14px;font-weight:600}p{color:var(--muted)}.site-header{background:var(--surface);border-bottom:1px solid var(--line)}.header-inner{max-width:1440px;padding:0 40px;margin:auto;height:76px;display:flex;align-items:center;gap:40px}.brand{display:flex;align-items:center;gap:9px;white-space:nowrap}.brand-icon{width:26px;height:26px;display:flex;color:var(--text)}.brand-icon svg{width:100%;height:100%}.brand strong{font-size:17px;letter-spacing:-.65px}.brand strong>span{color:var(--muted);font-weight:400}.brand-divider{color:var(--line);font-size:23px;font-weight:300;margin:0 5px}.brand-project{font-size:12px;color:var(--muted)}nav{display:flex;align-items:stretch;gap:25px;margin-left:auto;align-self:stretch;font-size:12px}nav>a{display:flex;align-items:center;position:relative;color:var(--muted)}nav>a:hover,nav>a[aria-current=page]{color:var(--text)}nav>a[aria-current=page]:after{content:"";position:absolute;height:2px;background:var(--accent);bottom:-1px;left:0;right:0}.header-actions{display:flex;align-items:center;gap:9px;font-size:11px}.header-actions button{background:none;border-color:transparent;padding:5px;min-width:28px}.nav-utility{align-self:center;border:1px solid var(--line);border-radius:5px;padding:6px 10px;font-size:11px;white-space:nowrap;gap:5px}main{max-width:1440px;margin:auto;padding:0 40px}.directory-layout{display:grid;grid-template-columns:197px minmax(0,1fr);gap:48px;min-height:75vh}.directory-sidebar{padding:37px 24px 35px 0;border-right:1px solid 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button{display:flex;gap:16px;align-items:center;border:0;font-size:11px;background:var(--soft);padding:8px 13px;border-radius:4px}.search-form button:hover{background:var(--accent-soft);color:var(--accent)}kbd{font-family:inherit;line-height:1.6;font-size:10px;padding:0 6px;border:1px solid var(--line);color:var(--muted);border-radius:3px;margin:0 7px}.quick-topics{display:flex;align-items:center;gap:15px;font-size:10px;color:var(--muted);margin-top:12px;flex-wrap:wrap}.quick-topics>a{color:var(--text)}.quick-topics>a>span{color:var(--muted);margin-left:2px}.directory-section{margin-top:30px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:17px}.section-heading h2{display:flex;align-items:center;gap:10px}.section-index{font-size:9px;color:var(--muted);font-weight:400;letter-spacing:0}.section-heading>a{font-size:10px;color:var(--muted)}.section-heading>a:hover{color:var(--accent)}.selected-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.selected-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;min-width:0;transition:border-color .15s,box-shadow .15s}.selected-card:hover{border-color:#b9c2dd;box-shadow:0 5px 15px #1a315c08}.selected-image{display:flex;align-items:center;justify-content:center;aspect-ratio:1.75;position:relative;padding:12px;background:#fff;border-bottom:1px solid var(--line);overflow:hidden}.selected-image img{display:block;width:100%;height:100%;object-fit:contain}.figure-link{position:absolute;bottom:7px;right:7px;padding:3px 7px;border:1px solid #e3e6eb;background:#fffffff0;color:#667085;border-radius:3px;font-size:8px;opacity:0;transition:opacity .15s}.selected-image:hover .figure-link,.selected-image:focus-visible .figure-link{opacity:1}.selected-body{padding:15px 16px 14px;display:flex;flex-direction:column;flex:1;min-width:0}.paper-meta{display:flex;align-items:center;gap:9px;flex-wrap:wrap;color:var(--muted);font-size:9px;line-height:1.5}.paper-meta>span+span:before{content:"·";margin-right:9px;color:var(--muted)}.selected-card h3{font-size:13px;line-height:1.5;margin:7px 0 17px;letter-spacing:-.15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.selected-card .resource-links{margin-top:auto;gap:5px}.resource-links{display:flex;align-items:center;flex-wrap:wrap;gap:6px}.resource-link{font-size:9px;display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:var(--surface);padding:4px 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7px}.tags>a:hover{color:var(--text);border-color:var(--muted)}.filter-bar{margin-top:14px;display:flex;flex-direction:column;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line)}.filter-selects{display:flex;flex-wrap:wrap;gap:8px}select{background:var(--surface);border:1px solid var(--line);border-radius:5px;padding:7px 10px;font-size:11px;max-width:100%;cursor:pointer}.filter-selects select{flex:1;min-width:120px;max-width:250px}.filter-checks{display:flex;align-items:center;gap:18px;font-size:11px}.check{display:flex;gap:7px;align-items:center;color:var(--muted)}input[type=checkbox]{margin:0;width:13px;height:13px;accent-color:var(--accent)}#clear-filters{margin-left:auto;font-size:10px;padding:0;background:none;border:0;color:var(--muted)}.results-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:18px 0 12px;font-size:10px;color:var(--muted)}.results-toolbar select{border:0;background:none;font-size:10px;padding:4px 0 4px 10px}.active-filters{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:13px}.active-filters:empty{display:none}.active-filters button{font-size:10px;padding:3px 8px;border-color:transparent;background:var(--accent-soft);color:var(--accent)}.active-filters button>span{padding-left:8px}.pagination{display:flex;align-items:center;justify-content:center;gap:25px;font-size:11px;color:var(--muted);margin-top:25px}.pagination button{font-size:11px}.empty-results{text-align:center;padding:60px 20px}.empty-results>span{font-size:25px;color:var(--muted)}.empty-results h2{margin:15px 0 8px}.empty-results p{font-size:12px;margin-bottom:20px}.page-shell{padding:40px 0 60px;max-width:1100px;margin:auto;min-height:72vh}.projects-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.project-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:21px;display:flex;flex-direction:column;min-width:0}.project-card h2{font-size:16px;margin:5px 0 9px}.project-card p{font-size:11px;line-height:1.8;margin-bottom:22px}.project-card .resource-links{margin-top:auto}.button{display:inline-block;border:1px solid var(--line);border-radius:5px;background:var(--surface);padding:9px 14px;font-size:12px}.primary{background:var(--accent);color:var(--surface);border-color:var(--accent)}footer{border-top:1px solid var(--line);max-width:1360px;padding:22px 0 27px;margin:0 auto;display:flex;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted)}footer>div{display:flex;align-items:center;gap:20px}.footer-separator{color:var(--line);margin:0 -9px}.skip,.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip:focus{clip:auto;width:auto;height:auto;top:10px;left:10px;background:var(--surface);padding:10px;z-index:50}[hidden]{display:none!important}.muted{color:var(--muted)}.prose{font-size:13px;line-height:1.8}.prose p{margin:14px 0}.prose a{color:var(--accent)}.prose h2{margin:25px 0 10px}.markdown-table{overflow-x:auto}.prose table{border-collapse:collapse;min-width:700px}.prose td,.prose th{border:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}
@media(min-width:1500px){.header-inner{height:82px}.directory-content{padding-top:44px}.directory-sidebar{padding-top:44px}.selected-image{aspect-ratio:1.7}.selected-card h3{font-size:14px}.paper-card h3{font-size:14px}}
@media(max-width:1250px){.header-inner{padding:0 28px;gap:23px}.brand-project,.brand-divider{display:none}main{padding:0 28px}.directory-layout{grid-template-columns:180px minmax(0,1fr);gap:30px}.directory-sidebar{padding-right:18px}.selected-grid{gap:12px}.selected-body{padding:13px}.selected-card h3{font-size:12px}.resource-link{padding:4px 6px;gap:5px}footer{margin:0 28px}}
@media(max-width:1000px){.header-inner{gap:18px}nav{gap:20px}.directory-layout{grid-template-columns:160px minmax(0,1fr);gap:25px}.directory-sidebar{font-size:11px;padding-right:12px}.sidebar-group>a{padding:7px 7px}.sidebar-label{margin-left:7px}.selected-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.selected-image{aspect-ratio:1.9}.selected-card h3{font-size:13px}.paper-card{flex-direction:column;align-items:flex-start;gap:10px}.paper-card>.resource-links{max-width:none;justify-content:flex-start}.paper-card h3{font-size:13px}.directory-heading{align-items:flex-start}.heading-link{display:none}h1{font-size:28px}}
@media(max-width:760px){.header-inner{height:auto;min-height:66px;flex-wrap:wrap;padding:17px 20px 0;gap:16px}.brand strong{font-size:16px}.header-actions{margin-left:auto}nav{order:3;flex-basis:100%;height:36px;margin:0;gap:27px;font-size:11px}nav a{padding-bottom:10px}main{padding:0 20px}.directory-layout{display:block}.directory-sidebar{display:none}.directory-content{padding-top:27px}.directory-heading .eyebrow{font-size:8px}.page-heading{margin-bottom:20px}.page-heading h1{font-size:28px}.page-heading p{font-size:11px}.quick-topics{font-size:9px;gap:12px}.directory-section{margin-top:27px}.selected-grid{gap:12px}.selected-body{padding:13px 14px}.selected-image{aspect-ratio:1.8;padding:10px}.selected-card h3{font-size:13px}.selected-card .resource-links{gap:5px}.resource-link{font-size:9px;padding:4px 7px}.filter-selects{display:grid;grid-template-columns:1fr 1fr}.filter-selects select{min-width:0;max-width:none;width:100%}.paper-card{padding:17px 0;gap:11px}.paper-card h3{font-size:14px}.paper-meta{font-size:9px}.projects-grid{gap:12px}.project-card{padding:17px}footer{margin:0 20px;padding:22px 0;flex-wrap:wrap;gap:10px;font-size:9px}footer>div{gap:15px}.page-shell{padding-top:28px}.section-heading>a{font-size:9px}}
@media(max-width:450px){main{padding:0 16px}.header-inner{padding-left:16px;padding-right:16px}.brand-icon{width:24px;height:24px}.header-actions{gap:4px}.selected-grid{grid-template-columns:1fr}.selected-image{aspect-ratio:2.1;padding:14px}.selected-card h3{font-size:14px;-webkit-line-clamp:2;margin-bottom:15px}.selected-body{padding:15px 17px}.selected-card .resource-link{font-size:10px;padding:5px 9px}.selected-card .paper-meta{font-size:10px}.section-heading h2{font-size:16px}.section-heading>a{max-width:140px;text-align:right}.search-form kbd{display:none}.search-form button{padding:8px 10px;gap:8px}.quick-topics{gap:10px}.quick-topics>span{display:none}.projects-grid{grid-template-columns:1fr}.page-heading h1{font-size:25px}.paper-card h3{font-size:13px}.pagination{gap:15px}.paper-card>.resource-links{gap:6px}.resource-link{font-size:10px;padding:5px 8px}footer{margin-left:16px;margin-right:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.image-credit{display:block;color:var(--muted);font-size:8px;line-height:1.5;margin:-4px 0 11px}.image-credit>span{font-size:8px}.image-credit:hover{color:var(--accent)}
.benchmark-paper{font-size:10px;color:var(--muted);line-height:1.6;max-width:760px}#directory-count{font-size:10px;color:var(--muted)}

/* Shared editorial guides preserve the Markdown hierarchy on every viewport. */
.prose h1{margin-bottom:20px}.prose h3{margin:22px 0 10px}.prose table{width:100%}.prose th[colspan]{background:var(--accent-soft);color:var(--text)}.guide-content{padding:10px 0 45px}.prose li{margin:6px 0}.prose .markdown-table{margin:16px 0}.prose p{color:var(--text)}
@media(max-width:760px){nav{overflow-x:auto;max-width:100%;gap:22px}nav>a{flex-shrink:0;white-space:nowrap}.prose h1{font-size:26px}.prose table{min-width:680px}}

.brand-icon img{display:block;width:28px;height:28px;object-fit:contain;background:#fff;border-radius:2px}

.selected-route-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.selected-route{min-width:0}.selected-route-title{font-size:12px;min-height:36px;color:var(--muted)}.selected-group-cards{display:grid;gap:16px}.selected-description{font-size:12px;line-height:1.6;margin:10px 0}
@media(max-width:1000px){.selected-route-grid{grid-template-columns:1fr}.selected-group-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.selected-route-title{min-height:0;margin-bottom:12px}}
@media(max-width:480px){.selected-group-cards{grid-template-columns:1fr}}

/* Categories share one visual weight; icons distinguish their roles. */

.selected-route-title{display:flex;align-items:center;gap:9px;color:var(--text);font-weight:650;margin-bottom:10px}.route-symbol{width:27px;height:27px;display:inline-flex;flex-shrink:0}.route-symbol svg{width:100%;height:100%}.selected-route .selected-card{border-top:1px solid var(--line)}.selected-image{background:linear-gradient(135deg,#fff,#f6f8fc)}
.collection-map{margin:30px 0;border:1px solid var(--line);border-radius:12px;padding:25px;background:radial-gradient(ellipse at top right,var(--accent-soft),transparent 65%),var(--surface)}.collection-map-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.collection-map-heading>div>span{font-size:9px;letter-spacing:1.4px;color:var(--muted)}.collection-map-heading h2{margin-top:8px;font-size:19px}.initiative-flow{display:flex;align-items:center;gap:8px;font-size:10px;color:var(--muted)}.initiative-flow>span{border:1px solid var(--line);border-radius:6px;padding:6px 9px;background:var(--surface)}.initiative-flow>.decision-node{border-color:var(--accent);color:var(--accent)}.initiative-flow i{font-style:normal}.collection-map-routes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.map-route{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:17px;border:1px solid var(--line);border-radius:8px;background:var(--surface);transition:transform .15s,border-color .15s}.map-route:hover{transform:translateY(-2px);border-color:currentColor}.map-icon{width:32px;height:32px;display:flex}.map-route strong{font-size:12px}.map-detail{font-size:10px;color:var(--muted);line-height:1.6}.map-arrow{position:absolute;right:16px;top:16px;font-size:17px}
@media(max-width:1000px){.collection-map-heading{align-items:flex-start;flex-direction:column}.initiative-flow{flex-wrap:wrap}}@media(max-width:600px){.collection-map{padding:19px}.collection-map-routes{grid-template-columns:1fr}.map-route{display:grid;grid-template-columns:34px 1fr;gap:5px 13px;padding-right:34px}.map-icon{grid-row:span 2}.map-detail{grid-column:2}.map-arrow{top:21px}}@media(prefers-reduced-motion:reduce){.map-route{transition:none}.map-route:hover{transform:none}}

/* Proactive is the primary visual identity; Awesome is a secondary label. */
.proactive-heading .awesome-kicker{display:block;color:var(--muted);font-size:15px;letter-spacing:.3px;margin:2px 0 7px}.proactive-heading h1{font-size:clamp(34px,4.3vw,54px);font-weight:750;letter-spacing:-2px;line-height:1.2}.proactive-emphasis{position:relative;display:inline-block;color:var(--accent);isolation:isolate}.proactive-emphasis:after{content:"";position:absolute;left:0;right:0;bottom:0;height:7px;border-radius:3px;background:linear-gradient(90deg,#5b7ee8,#60c5b0);opacity:.45;z-index:-1}.proactive-heading p{max-width:680px;margin-top:15px}.brand .brand-proactive{font-size:12px;font-weight:700;letter-spacing:0;color:var(--accent)}html[data-theme=dark] .proactive-emphasis:after{opacity:.65}@media(max-width:760px){.page-heading.proactive-heading h1{font-size:36px;letter-spacing:-1.3px}.proactive-heading .awesome-kicker{font-size:13px}.proactive-emphasis:after{height:5px}}

/* The sidebar uses one icon, label and count layout across every directory. */
.sidebar-group>a .nav-item-label{display:flex;align-items:center;gap:9px;flex:1;min-width:0;max-width:none}.nav-item-label>span:last-child{min-width:0}.sidebar-icon{display:inline-flex;align-items:center;justify-content:center;flex:0 0 18px;width:18px;height:18px;color:inherit}.sidebar-icon svg{display:block;width:100%;height:100%}.sidebar-group .count{flex-shrink:0}.selected-body .tags{margin:0 0 15px}.project-card .tags{margin:0 0 16px}

/* Primary directories and contribution links live only in the header. */
@media(max-width:760px){
  nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px 12px;height:auto;padding-bottom:12px}
  nav>a{justify-content:center;padding:4px 0;white-space:nowrap}
  nav .nav-utility{font-size:10px;padding:5px 7px}
  .github-link{grid-column:3}.add-paper-link{grid-column:4}
  .directory-sidebar{display:block;padding:12px 0;border-right:0;border-bottom:1px solid var(--line);overflow-x:auto}
  .directory-sidebar .sidebar-group:first-child{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;padding:0}
  .directory-sidebar .sidebar-label,.directory-sidebar .sidebar-group:nth-child(2){display:none}
  .directory-sidebar .sidebar-group>a{padding:6px 8px;white-space:nowrap;font-size:10px}
  .directory-sidebar .sidebar-icon{width:15px;height:15px;flex-basis:15px}
  .directory-sidebar .nav-item-label{gap:6px}
}

/* Share row heights across the three selection groups. */
@media(min-width:1001px){
  .selected-route{display:grid;grid-template-rows:subgrid;grid-row:span var(--selection-rows,4)}
  .selected-group-cards{display:contents}
  .selected-route-title{margin:0;min-height:36px}
  .selected-card h3{min-height:3em}
}
.selected-card .selected-image{flex-shrink:0}