:root{--blue:#2459a6;--ink:#151515;--muted:#626b78;--border:#d9dde3;--nav:#f3f4f6;--header:#111827}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font:16px/1.65 Arial,sans-serif;background:#fff}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #65a4ff;outline-offset:3px}
.skip{position:fixed;top:-90px;left:12px;background:white;padding:12px;z-index:20}.skip:focus{top:10px}
header.topbar{height:72px;background:var(--header);color:white;display:flex;align-items:center;gap:22px;padding:0 22px;position:fixed;top:0;left:0;right:0;z-index:10}
.topbar a{color:#fff;font-size:14px}.brand{display:flex;align-items:center;gap:12px;min-width:260px;text-decoration:none!important}.brand img{width:46px;height:46px;object-fit:contain}.brand-title{font-size:21px;font-weight:bold;line-height:1}.collab-badge{width:38px!important;height:38px!important;margin-left:-8px}.brand small{display:block;font-size:10px;letter-spacing:1.2px;margin-top:5px;font-weight:normal;color:#cbd5e1}.top-title{flex:1;font-size:14px;color:#d4dae5}
.top-actions{display:flex;gap:20px;align-items:center}.top-actions a{white-space:nowrap}
#menu-toggle{display:none;color:white;background:transparent;border:1px solid #6c7e96;padding:5px 9px;border-radius:4px}
#sidebar{width:278px;background:var(--nav);border-right:1px solid var(--border);position:fixed;top:72px;bottom:0;overflow:auto;padding:22px 16px;z-index:8}
.nav-title{font-weight:700;font-size:13px;letter-spacing:.5px;line-height:1.45;margin:0}.version{font-size:12px;color:var(--muted);margin:8px 0 16px}
#sidebar label{display:block;font-size:12px;color:var(--muted)}#nav-search{width:100%;padding:8px;border:1px solid var(--border);border-radius:4px;margin:4px 0 14px;background:white}
#sidebar nav a{display:block;font-size:13px;color:#3c4656;padding:8px 9px;border-left:3px solid transparent;line-height:1.35}
#sidebar nav a.active{color:var(--blue);font-weight:bold;background:#e4ebf7;border-left-color:var(--blue)}
#sidebar nav .nav-group{font-weight:700;color:#64748b;padding:14px 9px 5px;font-size:11px;text-transform:uppercase;letter-spacing:.08em}
.workspace{margin:72px 0 0 278px}.toolbar{padding:11px 32px;background:#f8f9fa;border-bottom:1px solid var(--border);font-size:12px;color:var(--muted)}
.content-layout{display:flex;gap:34px;padding:34px 38px;max-width:1500px;margin:auto}
main{flex:1;min-width:0;max-width:970px}
main h1{font-size:34px;line-height:1.2;font-weight:500;border-bottom:3px solid var(--blue);padding-bottom:18px;margin:0 0 24px}
main h2{font-size:23px;font-weight:600;line-height:1.3;margin:34px 0 12px}main h3{font-size:18px;margin:25px 0 8px}
p{margin:14px 0}li{margin:6px 0}pre{overflow:auto;background:#f2f3f5;border:1px solid var(--border);border-left:3px solid var(--blue);padding:17px;font:13px/1.6 Consolas,monospace;border-radius:3px}
code{font:13px Consolas,monospace;background:#f2f3f5;padding:2px 4px}pre code{padding:0;background:none;font:inherit}
blockquote{margin:20px 0;padding:12px 18px;border-left:4px solid #78a5e4;background:#f4f7fc;color:#46566d}
.table-wrap{overflow:auto;margin:20px 0}table{border-collapse:collapse;width:100%;font-size:14px;line-height:1.5}th,td{padding:10px 12px;border:1px solid var(--border);text-align:left;vertical-align:top}th{background:#edf0f5;color:#263b59;font-weight:700}tbody tr:nth-child(even){background:#fafbfd}
aside.toc{width:170px;flex-shrink:0;font-size:12px;position:sticky;top:105px;align-self:flex-start;max-height:78vh;overflow:auto;border-left:1px solid var(--border);padding-left:18px}
aside.toc .toc-label{font-size:10px;letter-spacing:1px;color:var(--muted);margin:0 0 12px}aside.toc a{display:block;margin:9px 0;color:#4b5563;line-height:1.4}
.hero{background:var(--header);display:flex;color:white;align-items:center;margin-bottom:28px;min-height:220px;padding:28px;gap:22px;border-radius:3px}
.hero>div{flex:1}.hero img{width:190px;height:190px;object-fit:contain}.eyebrow{font-size:11px;color:#93b9f5;letter-spacing:1.6px;text-transform:uppercase}.hero-title{font-size:34px;font-weight:700;line-height:1.15}.hero p:last-child{font-size:14px;color:#d7e0ef}
.callout{border:1px solid var(--border);border-left:4px solid var(--blue);padding:14px 17px;background:#fafbfd;margin:20px 0}
.step-meta{color:var(--muted);font-size:13px;margin-top:-12px;margin-bottom:24px}
.workshop-pagination{display:flex;align-items:stretch;flex-wrap:nowrap;justify-content:space-between;gap:12px;margin:28px 0;padding:16px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.step-button{display:block;flex:1 1 0;min-width:0;max-width:none;padding:12px 16px;border:1px solid var(--blue);border-radius:5px;background:var(--blue);color:#fff!important;font-size:14px;line-height:1.5;text-decoration:none!important}
.step-button[rel=prev]{text-align:left}.step-button[rel=next]{text-align:right}.step-button:hover{background:#153a70}
.pagination-spacer{flex:1 1 0;min-width:0}.home-button{display:flex;align-items:center;justify-content:center;flex:0 0 auto;gap:6px;padding:10px 15px;border:1px solid var(--border);border-radius:5px;background:var(--surface,#fff);color:var(--text,#172033)!important;font-size:14px;font-weight:600;text-decoration:none!important;white-space:nowrap}.home-button:hover{border-color:var(--blue);color:var(--blue)!important}.top-actions .home-link{font-weight:600}
.module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:22px 0}.module-card{display:block;border:1px solid var(--border);border-radius:6px;padding:15px;background:white;color:var(--ink)}.module-card:hover{border-color:var(--blue);text-decoration:none;background:#f8fbff}
.module-card b{color:var(--blue);font-size:11px;letter-spacing:.08em;text-transform:uppercase}.module-card strong{display:block;font-size:16px;margin:4px 0}.module-card span{display:block;color:var(--muted);font-size:13px}
footer{padding:22px 38px;background:#eef0f4;color:#566171;font-size:13px;border-top:1px solid var(--border)}
@media(max-width:1200px){aside.toc{display:none}.top-title{display:none}}
@media(max-width:800px){header.topbar{gap:14px;padding:0 12px}.brand{min-width:0}.brand-title{font-size:18px}.brand img{width:40px;height:40px}.top-actions{gap:12px}.top-actions a{font-size:12px}#menu-toggle{display:block}#sidebar{display:none;z-index:9;box-shadow:4px 0 12px #0003}#sidebar.open{display:block}.workspace{margin-left:0}.content-layout{padding:25px 20px}.toolbar{padding:11px 20px}main h1{font-size:28px}.hero{padding:22px;gap:15px}.hero-title{font-size:27px}.hero img{width:110px;height:110px}footer{padding:22px 20px}}
@media(max-width:600px){.step-button{max-width:none;flex-basis:100%;text-align:left!important}.module-grid{grid-template-columns:1fr}.top-actions a.repo-link{display:none}.brand small{font-size:9px}}
@media print{header,#sidebar,aside.toc,.toolbar,.workshop-pagination{display:none}.workspace{margin:0}.content-layout{padding:0}main{max-width:none}.hero{break-inside:avoid}pre{white-space:pre-wrap}table{font-size:10px}footer{display:none}}