:root{
  --bg:#f6f8fc;--surface:#fff;--surface-2:#f9fbff;--text:#172033;--muted:#61708a;--line:#dfe5ef;
  --brand:#2563eb;--brand-2:#4f46e5;--brand-soft:#eaf1ff;--success:#15803d;--warning:#b45309;--danger:#b91c1c;
  --code:#0f172a;--code-text:#e2e8f0;--shadow:0 18px 55px rgba(30,41,59,.08);--radius:16px;--sidebar:320px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}a{color:inherit}.skip-link{position:fixed;left:12px;top:-60px;z-index:1000;background:var(--brand);color:#fff;padding:10px 14px;border-radius:10px}.skip-link:focus{top:12px}
.topbar{height:68px;position:fixed;inset:0 0 auto 0;z-index:100;background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:18px;padding:0 22px}.brand{display:flex;align-items:center;gap:11px;min-width:280px;text-decoration:none}.brand img{width:34px;height:34px}.brand strong{display:block;font-size:14px;line-height:1.2}.brand small{display:block;color:var(--muted);font-size:11px}.top-search{flex:1;max-width:620px;position:relative}.top-search input{width:100%;border:1px solid var(--line);background:var(--surface-2);color:var(--text);border-radius:12px;padding:11px 42px 11px 40px;outline:none}.top-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 14%,transparent)}.search-icon{position:absolute;left:14px;top:10px;color:var(--muted)}.kbd{position:absolute;right:10px;top:9px;border:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:10px;border-radius:7px;padding:2px 7px}.top-actions{margin-left:auto;display:flex;gap:8px}.top-link,.menu-btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:10px;height:38px;padding:0 12px;text-decoration:none;font-size:12px;font-weight:700;cursor:pointer}.top-link:hover{background:var(--brand-soft);color:var(--brand);border-color:color-mix(in srgb,var(--brand) 24%,var(--line))}.menu-btn{display:none;min-width:38px;padding:0 10px}
.sidebar{position:fixed;top:68px;bottom:0;left:0;width:var(--sidebar);border-right:1px solid var(--line);background:var(--surface);overflow:auto;padding:20px 18px 32px;z-index:90}.side-label{font-size:10px;font-weight:800;letter-spacing:.13em;color:var(--muted);text-transform:uppercase;padding:8px 10px}.nav{display:grid;gap:4px}.nav a{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--muted);font-size:13px;font-weight:600;padding:9px 11px;border-radius:9px;line-height:1.4}.nav a:hover,.nav a.active{background:var(--brand-soft);color:var(--brand)}.nav .sub{padding-left:28px;font-weight:500}.side-meta{margin-top:20px;border-top:1px solid var(--line);padding:18px 10px;color:var(--muted);font-size:11px;line-height:1.7}.content{margin-left:var(--sidebar);padding:100px 30px 70px;max-width:1560px}.page{max-width:1120px;margin:auto}.hero{background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 10%,var(--surface)),var(--surface) 50%,color-mix(in srgb,var(--brand-2) 9%,var(--surface)));border:1px solid color-mix(in srgb,var(--brand) 25%,var(--line));border-radius:22px;padding:38px;box-shadow:var(--shadow);position:relative;overflow:hidden}.hero:after{content:"";position:absolute;width:330px;height:330px;border-radius:50%;background:color-mix(in srgb,var(--brand) 10%,transparent);right:-130px;top:-160px;filter:blur(4px)}.eyebrow{font-size:11px;font-weight:900;letter-spacing:.16em;text-transform:uppercase;color:var(--brand)}h1{font-size:clamp(34px,5vw,58px);line-height:1.04;margin:10px 0 14px;letter-spacing:-.035em}.hero p{max-width:850px;color:var(--muted);font-size:17px}.badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:5px 10px;font-size:11px;font-weight:700}.badge.primary{color:var(--brand);border-color:color-mix(in srgb,var(--brand) 25%,var(--line));background:var(--brand-soft)}
.section{padding:58px 0 4px;border-bottom:1px solid var(--line)}.section:last-child{border-bottom:0}.section h2{font-size:30px;line-height:1.15;margin:0 0 12px;letter-spacing:-.02em}.section h3{font-size:19px;margin:30px 0 9px}.section h4{font-size:14px;margin:20px 0 7px}.lead{color:var(--muted);font-size:15px;max-width:880px}.grid{display:grid;gap:16px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:0 6px 20px rgba(30,41,59,.035)}.card h3,.card h4{margin-top:0}.card p{color:var(--muted);font-size:13px}.metric{font-size:28px;font-weight:800;letter-spacing:-.025em}.metric-label{font-size:11px;color:var(--muted);font-weight:700}.callout{border:1px solid color-mix(in srgb,var(--brand) 25%,var(--line));border-left:4px solid var(--brand);background:var(--brand-soft);border-radius:12px;padding:14px 16px;margin:18px 0}.callout.warning{border-color:color-mix(in srgb,#f59e0b 28%,var(--line));border-left-color:#f59e0b;background:color-mix(in srgb,#f59e0b 8%,var(--surface))}.callout.danger{border-color:color-mix(in srgb,#ef4444 28%,var(--line));border-left-color:#ef4444;background:color-mix(in srgb,#ef4444 8%,var(--surface))}.callout strong{display:block;margin-bottom:2px}.callout p{margin:0;color:var(--muted);font-size:13px}
pre{position:relative;margin:14px 0;background:var(--code);color:var(--code-text);padding:18px 20px;border-radius:13px;overflow:auto;font-size:12px;line-height:1.7}code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace}.inline-code{background:var(--brand-soft);color:var(--brand);border-radius:6px;padding:2px 5px;font-family:monospace;font-size:.9em}.copy-btn{position:absolute;top:9px;right:9px;border:1px solid #334155;background:#1e293b;color:#cbd5e1;border-radius:7px;padding:5px 8px;font-size:10px;cursor:pointer}.steps{counter-reset:step;display:grid;gap:13px}.step{position:relative;padding:16px 16px 16px 54px;border:1px solid var(--line);border-radius:13px;background:var(--surface)}.step:before{counter-increment:step;content:counter(step);position:absolute;left:15px;top:15px;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--brand);color:white;font-size:12px;font-weight:800}.step strong{display:block}.step p{margin:3px 0 0;color:var(--muted);font-size:13px}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:13px;background:var(--surface)}table{width:100%;border-collapse:collapse;font-size:12px}th,td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:var(--surface-2);font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);position:sticky;top:0}tr:last-child td{border-bottom:0}.path{font-family:monospace;color:var(--brand);font-size:11px}.tag{display:inline-flex;border-radius:999px;padding:3px 7px;background:var(--brand-soft);color:var(--brand);font-size:10px;font-weight:700}.tree{background:var(--code);color:var(--code-text);padding:18px;border-radius:13px;font-family:monospace;font-size:12px;white-space:pre;overflow:auto}.diagram{display:flex;align-items:stretch;gap:8px;flex-wrap:wrap;margin:18px 0}.node{flex:1 1 155px;min-width:145px;border:1px solid var(--line);background:var(--surface);padding:14px;border-radius:12px;text-align:center}.node b{display:block;font-size:13px}.node small{color:var(--muted)}.arrow{align-self:center;color:var(--brand);font-weight:900;font-size:20px}.do-dont{display:grid;grid-template-columns:1fr 1fr;gap:16px}.do{border-top:3px solid #22c55e}.dont{border-top:3px solid #ef4444}.checklist{list-style:none;padding:0;margin:12px 0}.checklist li{position:relative;padding:7px 0 7px 26px;border-bottom:1px dashed var(--line);font-size:13px}.checklist li:last-child{border-bottom:0}.checklist li:before{content:"✓";position:absolute;left:2px;color:var(--success);font-weight:900}.footer{margin-top:60px;padding:24px 0;color:var(--muted);font-size:12px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}.search-note{font-size:11px;color:var(--muted);margin:10px 3px}.hidden-by-search{display:none!important}
.page-toolbar{display:flex;gap:10px;align-items:center;margin:18px 0}.page-toolbar input,.page-toolbar select{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:10px;padding:10px 12px;outline:none}.page-toolbar input{flex:1}.count-pill{background:var(--brand-soft);color:var(--brand);padding:6px 10px;border-radius:999px;font-size:11px;font-weight:800}.module-card{display:flex;flex-direction:column;min-height:180px}.module-card .module-count{margin-top:auto;padding-top:12px;color:var(--brand);font-weight:800}.muted{color:var(--muted)}.small{font-size:12px}.hr{height:1px;background:var(--line);margin:20px 0}
@media(max-width:1120px){:root{--sidebar:286px}.brand{min-width:246px}.grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:820px){.topbar{padding:0 12px}.brand{min-width:auto}.brand .brand-copy{display:none}.top-search{max-width:none}.kbd{display:none}.menu-btn{display:inline-flex}.sidebar{transform:translateX(-102%);transition:transform .2s ease;box-shadow:var(--shadow)}body.sidebar-open .sidebar{transform:translateX(0)}.content{margin-left:0;padding:92px 16px 54px}.page{max-width:none}.hero{padding:26px}.grid.two,.grid.three,.grid.four,.do-dont{grid-template-columns:1fr}.top-actions .optional{display:none}.section{padding-top:44px}}
@media(max-width:480px){.top-search input{font-size:12px;padding-left:34px}.topbar{gap:8px}.hero{padding:22px 18px}.section h2{font-size:25px}.card{padding:15px}.diagram{display:grid}.arrow{transform:rotate(90deg);justify-self:center}.page-toolbar{align-items:stretch;flex-direction:column}}
@media print{.topbar,.sidebar,.copy-btn,.page-toolbar{display:none!important}.content{margin:0;padding:0}.page{max-width:none}.hero,.card,.table-wrap{box-shadow:none;break-inside:avoid}.section{break-before:auto}.footer{margin-top:30px}}