:root{--air-bg: #ffffff;--air-bg-alt: #f8fafc;--air-ink: #0f172a;--air-ink-soft: #334155;--air-muted: #64748b;--air-line: #e2e8f0;--air-line-strong: #cbd5e1;--air-surface: #ffffff;--air-surface-2: #f1f5f9;--air-accent: #0f766e;--air-accent-strong: #0d5f59;--air-accent-soft: #ccfbf1;--air-accent-tint: #f0fdfa;--air-teal: #14b8a6;--air-teal-soft: #5eead4;--air-slate: #0f172a;--air-warn: #ea580c;--air-warn-soft: #fff7ed;--air-warn-line: #fed7aa;--air-error: #dc2626;--air-error-soft: #fef2f2;--air-error-line: #fecaca;--air-radius: 10px;--air-radius-lg: 16px;--air-shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);--air-shadow-md: 0 8px 24px -8px rgba(15, 23, 42, .15);--air-shadow-lg: 0 24px 48px -12px rgba(15, 23, 42, .2);--air-font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--air-font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;--ink: var(--air-ink);--ink-soft: var(--air-ink-soft);--muted: var(--air-muted);--line: var(--air-line);--bg: var(--air-bg);--surface: var(--air-surface);--surface-2: var(--air-surface-2);--accent: var(--air-accent);--accent-strong: var(--air-accent-strong);--accent-soft: var(--air-accent-soft);--accent-tint: var(--air-accent-tint);--shadow-sm: var(--air-shadow-sm);--shadow-md: var(--air-shadow-md);--shadow-lg: var(--air-shadow-lg);--radius: var(--air-radius);--radius-lg: var(--air-radius-lg);--maxw: 1120px;--font-sans: var(--air-font-sans);--font-mono: var(--air-font-mono)}*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--air-font-sans);color:var(--air-ink);background:var(--air-bg);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,h4{line-height:1.15;letter-spacing:-.02em;color:var(--air-ink);margin:0 0 .5em;font-weight:700}h1{font-size:clamp(2rem,4.5vw,3rem)}h2{font-size:clamp(1.4rem,2.7vw,1.9rem)}h3{font-size:1.2rem}p{margin:0 0 1rem;color:var(--air-ink-soft)}a{color:var(--air-accent-strong);text-decoration:none}a:hover{text-decoration:underline}code,pre{font-family:var(--air-font-mono);font-size:.92em}code{background:var(--air-surface-2);padding:.08em .35em;border-radius:5px;border:1px solid var(--air-line)}.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:20px}.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.crumbs{font-size:.85rem;color:var(--air-muted);margin-bottom:.75rem}.crumbs a{color:var(--air-muted)}.crumbs span{margin:0 .35rem}.ai-skip{position:absolute;left:-9999px;top:0;background:var(--air-ink);color:#fff;padding:.5rem 1rem;border-radius:6px;z-index:100}.ai-skip:focus{left:1rem;top:1rem}.ai-topbar{position:sticky;top:0;z-index:40;background:#ffffffd9;backdrop-filter:saturate(150%) blur(8px);-webkit-backdrop-filter:saturate(150%) blur(8px);border-bottom:1px solid var(--air-line)}.ai-topbar-inner{max-width:1120px;margin:0 auto;padding:.85rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}.ai-brand{display:inline-flex;align-items:center;gap:.55rem;text-decoration:none;color:var(--air-ink);font-weight:700;font-size:1.05rem;letter-spacing:-.01em}.ai-brand-mark{flex:none}.ai-brand-name strong{color:var(--air-accent-strong)}.ai-topnav{display:flex;align-items:center;gap:.35rem;flex-wrap:wrap}.ai-topnav a{text-decoration:none;color:var(--air-ink-soft);font-weight:500;font-size:.95rem;padding:.5rem .75rem;border-radius:8px;transition:background .15s,color .15s}.ai-topnav a:hover{background:var(--air-surface-2);color:var(--air-ink)}.ai-topnav-cta{background:var(--air-ink)!important;color:#fff!important;font-weight:600!important}.ai-topnav-cta:hover{background:var(--air-accent-strong)!important}@media(max-width:640px){.ai-topbar-inner{padding:.7rem 1rem;gap:.5rem}.ai-brand{font-size:1rem}.ai-topnav{gap:0;flex-wrap:nowrap}.ai-topnav a:not(.ai-topnav-cta){display:none}.ai-topnav-cta{font-size:.85rem!important;padding:.5rem .85rem!important}}main#main{min-height:60vh}.ai-footer{margin-top:4rem;background:var(--air-slate);color:#cbd5e1}.ai-footer a{color:#5eead4;text-decoration:none}.ai-footer a:hover{color:#ccfbf1;text-decoration:underline}.ai-footer-inner{max-width:1120px;margin:0 auto;padding:2.5rem 1.25rem 2rem;display:grid;gap:1.25rem}.ai-footer-brand{font-size:.95rem;display:flex;flex-wrap:wrap;gap:.5rem;align-items:baseline}.ai-footer-brand strong{color:#fff;font-weight:700;font-size:1.05rem}.ai-footer-brand span{color:#94a3b8}.ai-footer-nav{display:flex;flex-wrap:wrap;gap:.25rem 1.25rem;font-size:.92rem}.ai-footer-fine{margin:.5rem 0 0;font-size:.82rem;color:#94a3b8;border-top:1px solid rgba(148,163,184,.2);padding-top:1rem}@media print{.ai-topbar,.ai-footer,.ai-skip{display:none!important}}