:root{--ink:#17251f;--cream:#f7f2e7;--white:#fffdf8;--yellow:#ffd95a;--blue:#69b8ff;--coral:#ff806b;--muted:#5f6a65;--line:#b9c1bc;--shadow:7px 7px 0 var(--ink)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cream);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}.at-shell{width:min(1160px,calc(100% - 40px));margin-inline:auto}.at-skip{position:absolute;left:-9999px}.at-skip:focus{left:18px;top:18px;background:#fff;padding:12px;border:3px solid var(--ink);z-index:20}.at-header{border-bottom:3px solid var(--ink);background:var(--cream)}.at-nav{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:22px}.at-logo{display:flex;align-items:center;gap:11px;color:inherit;text-decoration:none;font-weight:950;letter-spacing:-.035em;font-size:1.16rem}.at-logo img{width:44px;height:44px}.at-links{display:flex;gap:22px;align-items:center}.at-links a,.at-footer a{color:inherit;font-weight:850}.at-button{display:inline-flex;align-items:center;justify-content:center;border:3px solid var(--ink);background:var(--yellow);color:var(--ink);box-shadow:5px 5px 0 var(--ink);padding:12px 18px;text-decoration:none;font:inherit;font-weight:900;cursor:pointer}.at-button:hover{transform:translate(2px,2px);box-shadow:3px 3px 0 var(--ink)}.at-button--small{padding:8px 13px}.at-hero{padding:68px 0 55px}.at-hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:54px;align-items:center}.at-eyebrow{text-transform:uppercase;letter-spacing:.17em;font-size:.76rem;font-weight:950}.at-hero h1{font-size:clamp(3.2rem,7vw,7rem);line-height:.87;letter-spacing:-.075em;margin:18px 0 25px}.at-lede{font-size:1.25rem;color:var(--muted);max-width:720px}.at-map{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.at-map div{min-height:120px;border:3px solid var(--ink);padding:17px;background:#fff;box-shadow:4px 4px 0 var(--ink)}.at-map div:nth-child(2n){background:var(--blue)}.at-map div:nth-child(3n){background:var(--coral)}.at-map strong{display:block;font-size:1.25rem}.at-search{background:var(--ink);padding:26px 0}.at-search label{display:block;color:#fff;font-weight:900;margin-bottom:7px}.at-search input{width:100%;border:3px solid var(--ink);padding:15px;font:inherit;font-size:1.15rem}.at-section{padding:62px 0;border-top:3px solid var(--ink)}.at-section--yellow{background:var(--yellow)}.at-section--blue{background:var(--blue)}.at-section--coral{background:var(--coral)}.at-section-head{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:end;margin-bottom:30px}.at-section h2{font-size:clamp(2rem,4vw,4.2rem);line-height:1;letter-spacing:-.055em;margin:10px 0}.at-letter{display:grid;grid-template-columns:90px 1fr;gap:25px;padding:28px 0;border-top:2px solid var(--ink)}.at-letter:first-child{border-top:0}.at-letter>strong{font-size:4.5rem;line-height:1}.at-concept-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.at-card{border:3px solid var(--ink);background:#fff;padding:22px;box-shadow:5px 5px 0 var(--ink)}.at-card h3{font-size:1.35rem;line-height:1.2;margin:7px 0}.at-card a{color:inherit;font-weight:900}.at-chip{display:inline-block;background:var(--yellow);border:2px solid var(--ink);padding:3px 7px;text-transform:uppercase;font-size:.69rem;letter-spacing:.08em;font-weight:900}.at-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:25px}.at-stats div{border:3px solid var(--ink);padding:18px;background:#fff}.at-stats strong{font-size:2rem;display:block}.at-breadcrumbs{padding-top:22px;font-weight:800}.at-breadcrumbs a{color:inherit}.at-concept-head{display:grid;grid-template-columns:1fr .8fr;gap:44px}.at-definition{background:var(--yellow);border:3px solid var(--ink);box-shadow:var(--shadow);padding:28px}.at-definition strong{display:block;font-size:.75rem;text-transform:uppercase;letter-spacing:.12em}.at-definition p{font-size:1.45rem;line-height:1.35}.at-two{display:grid;grid-template-columns:1fr 1fr;gap:22px}.at-panel{border:3px solid var(--ink);background:#fff;padding:25px}.at-panel h2{font-size:2rem}.at-relations{display:flex;gap:10px;flex-wrap:wrap}.at-relations a{border:2px solid var(--ink);background:var(--cream);color:inherit;padding:7px 10px;font-weight:800;text-decoration:none}.at-entry{width:100%;border-collapse:collapse;background:#fff}.at-entry th,.at-entry td{border:2px solid var(--ink);padding:12px;text-align:left}.at-entry td:nth-child(n+2),.at-entry th:nth-child(n+2){text-align:right}.at-flow{display:grid;grid-template-columns:repeat(5,1fr)}.at-flow>div{border:3px solid var(--ink);background:#fff;padding:18px;min-height:150px}.at-flow>div+div{border-left:0}.at-flow strong{display:block;font-size:1.1rem;margin-bottom:7px}.at-timeline{display:grid;gap:22px}.at-event{display:grid;grid-template-columns:135px 1fr;gap:20px}.at-event-day{background:var(--ink);color:#fff;padding:20px;font-weight:900}.at-event-body{border:3px solid var(--ink);background:#fff;padding:24px}.at-checker{border:3px solid var(--ink);background:#fff;box-shadow:var(--shadow);padding:28px}.at-form-grid{display:grid;grid-template-columns:1fr 150px 160px;gap:12px}.at-field{display:flex;flex-direction:column;gap:6px}.at-field label{font-weight:900}.at-field input,.at-field select{border:2px solid var(--ink);padding:11px;font:inherit}.at-check-result{margin-top:18px;padding:18px;background:var(--blue);border:3px solid var(--ink)}.at-check-result--stop{background:var(--coral)}.at-source-list{display:grid;gap:14px}.at-source{display:grid;grid-template-columns:180px 1fr auto;gap:18px;align-items:center;border:3px solid var(--ink);background:#fff;padding:18px}.at-source a{color:inherit;font-weight:900}.at-prose{max-width:820px}.at-prose h2{margin-top:44px}.at-footer{background:var(--ink);color:#fff;padding:45px 0}.at-footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}.at-footer .at-logo{color:#fff}.at-fine{color:#cad5cf}.at-empty{color:var(--muted);font-style:italic}@media(max-width:850px){.at-hero-grid,.at-section-head,.at-concept-head,.at-two,.at-footer-grid{grid-template-columns:1fr}.at-concept-grid{grid-template-columns:1fr 1fr}.at-flow{grid-template-columns:1fr}.at-flow>div+div{border-left:3px solid var(--ink);border-top:0}.at-links a:not(.at-button){display:none}.at-source{grid-template-columns:1fr}.at-form-grid{grid-template-columns:1fr}.at-event{grid-template-columns:1fr}.at-map{grid-template-columns:1fr 1fr}}@media(max-width:560px){.at-shell{width:min(100% - 24px,1160px)}.at-concept-grid,.at-map,.at-stats{grid-template-columns:1fr}.at-letter{grid-template-columns:1fr}.at-letter>strong{font-size:3rem}.at-hero h1{font-size:3.2rem}}