/* AEC Agents · system fonts only · no imports or external assets */
:root{color-scheme:light dark;--bg:#f5f5ef;--surface:#fff;--soft:#eaf0eb;--ink:#182c29;--muted:#4c625c;--accent:#166048;--on-accent:#fff;--line:#71867d;--focus:#9c3815;--agent-bg:#d9eee1;--agent:#185238;--assist-bg:#e4eafa;--assist:#293f79;--auto-bg:#eee9dd;--auto:#594824;--font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--text-xs:.8125rem;--text-sm:.9375rem;--text-base:1rem;--text-lg:1.25rem;--text-xl:1.5rem;--text-2xl:2rem;--text-hero:clamp(2.4rem,5.4vw,4.25rem);--s1:.25rem;--s2:.5rem;--s3:.75rem;--s4:1rem;--s6:1.5rem;--s8:2rem;--s12:3rem;--s16:4rem;--radius:.5rem;--radius-lg:1rem;--max:76rem}
@media(prefers-color-scheme:dark){:root{--bg:#111d1a;--surface:#182923;--soft:#20392f;--ink:#eff5ee;--muted:#b6c6bb;--accent:#9ee5bc;--on-accent:#10281d;--line:#839a8c;--focus:#ffc18c;--agent-bg:#244434;--agent:#b1edc3;--assist-bg:#28344b;--assist:#c2d4ff;--auto-bg:#423b2c;--auto:#f1dbac}}
*{box-sizing:border-box}html{scroll-padding-top:1rem}body{margin:0;background:var(--bg);color:var(--ink);font:var(--text-base)/1.6 var(--font);-webkit-text-size-adjust:100%}button,input,select,textarea,pre,code,kbd{font:inherit}a{color:var(--accent);text-underline-offset:.2em;text-decoration-thickness:.08em}a:hover{text-decoration-thickness:.15em}button,a,input,select,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default}a,button,input,select,summary,textarea{scroll-margin-block:1.5rem}:focus-visible{outline:3px solid var(--focus);outline-offset:4px}h1,h2,h3,p,ul,ol,dl,pre,figure{margin:0}h1,h2,h3{line-height:1.15;text-wrap:balance;letter-spacing:-.025em}h1{font-size:var(--text-hero);max-width:18ch;font-weight:650}h2{font-size:var(--text-2xl);font-weight:650}h3{font-size:var(--text-lg);font-weight:650}p{max-width:72ch}img{max-width:100%;height:auto}ul,ol{padding-left:1.4rem}li+li{margin-top:.5rem}small,.small{font-size:var(--text-sm)}[hidden]{display:none!important}.wrap{width:min(var(--max),calc(100% - 3rem));margin-inline:auto}.skip{position:fixed;top:1rem;left:1rem;z-index:10;padding:.75rem 1rem;background:var(--surface);transform:translateY(-200%)}.skip:focus{transform:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.site-header{border-bottom:1px solid var(--line);background:var(--bg)}.header-inner{min-height:5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-block:.75rem}.brand{display:inline-flex;align-items:center;gap:.75rem;font-size:1.2rem;font-weight:750;letter-spacing:-.04em;color:var(--ink);text-decoration:none;min-height:44px}.brand-mark{width:2rem;height:2rem;display:grid;place-items:center;background:var(--ink);color:var(--bg);border-radius:.25rem;font-size:.8rem;letter-spacing:-.06em}.nav{display:flex;gap:1.5rem;flex-wrap:wrap}.nav a{display:inline-flex;align-items:center;min-height:44px;color:var(--ink);font-size:var(--text-sm)}.breadcrumbs{padding-block:1.25rem;color:var(--muted);font-size:var(--text-xs)}.breadcrumbs ol{padding:0;list-style:none;display:flex;gap:.5rem;flex-wrap:wrap}.breadcrumbs li+li{margin:0}.breadcrumbs li+li:before{content:"/";margin-right:.5rem;color:var(--muted)}main{padding-bottom:var(--s16)}.hero{display:grid;grid-template-columns:minmax(0,2fr) minmax(14rem,1fr);gap:var(--s12);padding-block:var(--s8) var(--s12);align-items:end}.hero p{margin-top:1.5rem;font-size:var(--text-lg);color:var(--muted);max-width:46ch}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:var(--text-xs);font-weight:700;color:var(--muted);margin-bottom:1rem}.hero .eyebrow{margin:0 0 1.25rem;font-size:var(--text-xs)}.hero-note{border-left:2px solid var(--accent);padding-left:1.5rem}.hero-note p{font-size:var(--text-sm);margin-top:.75rem}.stat{font-size:2rem;font-weight:650;letter-spacing:-.04em}.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-bottom:1.5rem}.section-head h2{font-size:1.5rem}.section{margin-top:var(--s12)}.muted{color:var(--muted)}
.finder{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:1.5rem}.search-top{display:grid;grid-template-columns:1fr auto;align-items:end;gap:1rem}.search-field{display:grid;gap:.5rem}.search-field input{font-size:1.125rem;padding:1rem;background:var(--bg)}label{font-size:var(--text-sm);font-weight:650}input,select,textarea{width:100%;min-height:48px;border:1px solid var(--line);border-radius:var(--radius);padding:.65rem .75rem;background:var(--surface);color:var(--ink)}input::placeholder{color:var(--muted);opacity:1}fieldset{border:0;padding:0;margin:0;min-width:0}fieldset:disabled{opacity:.75}.filters{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem;margin-top:1rem}.filters label{display:grid;gap:.4rem}.button{min-height:48px;padding:.7rem 1rem;border:1px solid var(--accent);border-radius:var(--radius);background:var(--accent);color:var(--on-accent);font-weight:650;display:inline-flex;justify-content:center;align-items:center;gap:.5rem;text-decoration:none}.button.secondary{color:var(--accent);background:var(--surface)}.button:hover{filter:brightness(.94)}.search-help{font-size:var(--text-xs);color:var(--muted);margin-top:1rem}.result-bar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;padding-block:1.5rem}.result-bar p{font-size:var(--text-sm)}.text-button{color:var(--accent);background:transparent;border:0;min-height:44px;padding:.5rem;text-decoration:underline;text-underline-offset:.2em}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;padding:0;list-style:none}.cards>li{margin:0;min-width:0}.card{height:100%;padding:1.5rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);display:flex;flex-direction:column;align-items:flex-start;gap:1rem}.card h3{font-size:1.25rem;line-height:1.3}.card h3 a{color:var(--ink);text-decoration:none}.card h3 a:hover{text-decoration:underline}.card:focus-within{border-color:var(--focus)}.card p{font-size:var(--text-sm);color:var(--muted)}.card .card-meta{font-size:var(--text-xs);margin-top:auto;padding-top:.5rem}.card-footer{font-size:var(--text-xs);color:var(--muted);display:flex;justify-content:space-between;width:100%;gap:.5rem;border-top:1px solid var(--line);padding-top:.75rem}.label{display:inline-flex;align-items:center;gap:.45rem;border-radius:.25rem;padding:.25rem .5rem;font-size:var(--text-xs);line-height:1.4;font-weight:650;text-decoration:none;max-width:100%}.label:before{content:"";width:.4rem;height:.4rem;border:1px solid currentColor;background:currentColor;flex-shrink:0}.label[data-label="agent-executes"]{background:var(--agent-bg);color:var(--agent)}.label[data-label="ai-assists"]{background:var(--assist-bg);color:var(--assist)}.label[data-label="conventional-automation"]{background:var(--auto-bg);color:var(--auto)}.empty{padding:2rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.empty h3{margin-bottom:.75rem}.role-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem;list-style:none;padding:0}.role-links li{margin:0}.role-links a{display:flex;align-items:center;justify-content:space-between;gap:.5rem;min-height:56px;padding:.75rem 1rem;border:1px solid var(--line);border-radius:var(--radius);font-size:var(--text-sm);background:var(--surface)}
.article-head{max-width:60rem;padding-block:1.5rem 2.5rem}.article-head h1{font-size:clamp(2rem,4.2vw,3.5rem);max-width:24ch;margin-block:1rem}.article-head .lede{font-size:var(--text-lg);color:var(--muted);margin-bottom:1.5rem}.badge-row{display:flex;gap:.75rem;flex-wrap:wrap;align-items:center}.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 18rem;gap:4rem;align-items:start}.prose{max-width:48rem;min-width:0}.prose section+section{margin-top:3rem}.prose h2{font-size:1.65rem;margin-bottom:1rem}.prose h3{margin-block:1.5rem .75rem}.prose p+p,.prose p+ul,.prose p+ol{margin-top:1rem}.prose li{padding-left:.25rem}.sidebar{background:var(--soft);border-radius:var(--radius);padding:1.5rem}.sidebar h2{font-size:1rem;margin-bottom:1rem}.sidebar nav{display:grid;gap:.25rem}.sidebar a{min-height:44px;display:flex;align-items:center}.sidebar p{margin-top:1rem;font-size:var(--text-sm)}.callout{padding:1.25rem;border-left:3px solid var(--accent);background:var(--soft);border-radius:0 var(--radius) var(--radius) 0}.callout p+p{margin-top:.75rem}.sample{margin-top:1rem;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.sample-head{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:.75rem 1rem;border-bottom:1px solid var(--line);background:var(--soft)}.sample-head h3{font-size:var(--text-sm);margin:0}.sample pre{padding:1.25rem;white-space:pre-wrap;overflow-wrap:anywhere;background:var(--surface);font-size:var(--text-sm);line-height:1.65}.copy-status{font-size:var(--text-sm);color:var(--muted);min-height:1.6em;margin-top:.5rem}.decision-list{list-style:none;padding:0;display:grid;gap:1rem}.decision-list>li{margin:0;padding:1.5rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.decision-list h3{margin:0 0 .75rem}.decision-list p+p{margin-top:.5rem}.decision-list a{display:inline-flex;align-items:center;min-height:44px}.definitions{border-block:1px solid var(--line);padding-block:2rem;margin-block:3rem 0}.definitions h2{font-size:1.5rem;margin-bottom:1.5rem}.definitions dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.5rem}.definitions dd{margin:.75rem 0 0;color:var(--muted);font-size:var(--text-sm)}.sponsor{padding:1.5rem;margin-block:2rem;border:1px solid var(--line);border-radius:var(--radius)}.site-footer{padding-block:2rem;border-top:1px solid var(--line);font-size:var(--text-sm);color:var(--muted)}.site-footer .wrap{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap}.site-footer a{min-height:44px;display:inline-flex;align-items:center}.demo-banner{font-size:var(--text-xs);padding:.5rem 1rem;background:var(--soft);text-align:center}
.prose .callout{margin-top:1rem}
@media(min-width:70rem){.sidebar{position:sticky;top:1.5rem}}
@media(max-width:64rem){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.role-links{grid-template-columns:repeat(2,minmax(0,1fr))}.article-grid{grid-template-columns:minmax(0,1fr) 14rem;gap:2rem}.hero{gap:2rem}}
@media(max-width:44rem){.wrap{width:calc(100% - 2rem)}.header-inner{gap:.5rem}.nav{gap:1rem}.hero{grid-template-columns:1fr;gap:1.5rem;padding-block:1rem 2rem}.hero-note{padding-left:1rem}.hero-note .stat{font-size:1.5rem}.hero p{font-size:1.125rem}.filters{grid-template-columns:repeat(2,minmax(0,1fr))}.finder{padding:1rem}.search-top{grid-template-columns:1fr}.cards{grid-template-columns:1fr}.article-grid{display:flex;flex-direction:column;gap:2rem}.sidebar{order:-1;width:100%}.sidebar nav{grid-template-columns:repeat(2,minmax(0,1fr))}.definitions dl{grid-template-columns:1fr}.role-links{grid-template-columns:1fr}.article-head{padding-top:.5rem}.sample-head{flex-wrap:wrap}.search-help kbd{display:none}}
@media(max-width:24rem){.filters{grid-template-columns:1fr}.nav{gap:.75rem}.nav a{font-size:.85rem}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media(forced-colors:active){.label,.button,.brand-mark{border:1px solid CanvasText}.label:before{background:CanvasText}}
@media print{.finder,.sidebar,.copy-button,.site-header,.site-footer,.demo-banner{display:none}.wrap{width:100%}.article-grid,.cards{display:block}.card{break-inside:avoid;margin-bottom:1rem}body{background:#fff;color:#000}a{color:#000}.definitions{break-inside:avoid}}