:root{--nav-bg:#1a365d;--hero-start:#1565c0;--hero-end:#1a252f;--text:#1a202c;--text-muted:#4a5568;--heading:#1a202c;--link:#2563eb;--link-hover:#1e40af;--btn:#2563eb;--btn-hover:#1e40af;--light-bg:#edf2f7;--card-bg:#fff;--border:#cbd5e0;--footer-bg:#e2e8f0;--footer-link:#1d4ed8;--code-bg:#1a252f;--code-text:#e6e6e6;--shadow:0 4px 6px rgba(0,0,0,0.1);--radius:4px;--mono:ui-monospace,"SFMono-Regular","SF Mono",Menlo,Consolas,"Liberation Mono",monospace;--sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;color-scheme:light}*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{margin:0;color:var(--text);background:#fff;font-family:var(--sans);font-size:1rem;line-height:1.65;overflow-wrap:break-word}h1,h2,h3,h4{color:var(--heading);font-family:var(--mono);font-weight:700;line-height:1.3;margin:0 0 0.75rem;scroll-margin-top:1rem}p,ul,ol{margin:0 0 1rem}a{color:var(--link);text-decoration:underline;text-underline-offset:2px}a:hover{color:var(--link-hover)}:focus-visible{outline:3px solid #f59e0b;outline-offset:2px}img{max-width:100%;height:auto}code{font-family:var(--mono);font-size:0.9em;background:var(--light-bg);border:1px solid var(--border);border-radius:3px;padding:0.05em 0.3em}pre{background:var(--code-bg);color:var(--code-text);border-radius:var(--radius);padding:1rem 1.25rem;margin:0 0 1.5rem;overflow-x:auto;font-size:0.875rem;line-height:1.55}pre code{background:none;border:0;padding:0;font-size:inherit;color:inherit}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;left:1rem;top:-100px;z-index:200;background:#fff;color:var(--nav-bg);padding:0.5rem 1rem;border-radius:var(--radius);font-weight:600}.skip-link:focus{top:1rem}.btn-primary,.btn-secondary{display:inline-block;padding:12px 24px;border-radius:var(--radius);font-weight:600;text-align:center;text-decoration:none;transition:background-color 0.2s,color 0.2s}.btn-primary{background:var(--btn);color:#fff;border:2px solid var(--btn)}.btn-primary:hover{background:var(--btn-hover);border-color:var(--btn-hover);color:#fff}.btn-secondary{background:transparent;color:var(--btn);border:2px solid var(--btn)}.site-header{background:var(--nav-bg);box-shadow:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -1px rgba(0,0,0,0.06);padding:0.75rem 0}.header-content{display:flex;align-items:center;justify-content:space-between;gap:1rem}.logo{display:inline-flex;align-items:center;gap:0.5rem;color:#fff;font-family:var(--mono);font-size:1.6rem;font-weight:700;text-decoration:none;white-space:nowrap}.logo:hover{color:#fff}.nav-links{display:flex;flex-wrap:wrap;align-items:center;list-style:none;margin:0;padding:0;gap:0.25rem}.nav-links a{display:block;color:#fff;font-weight:500;padding:0.5rem 0.75rem;border-radius:var(--radius);text-decoration:none}.nav-links a:hover,.nav-links a[aria-current="page"]{color:#fff;background:rgba(255,255,255,0.12)}.nav-links a[aria-current="page"]{box-shadow:inset 0 -2px 0 #63b3ed}.nav-links .nav-cta{margin-left:0.5rem;padding:0.45rem 1rem;border-width:0;background:var(--btn)}.nav-links .nav-cta:hover{background:var(--btn-hover)}.hero{background:linear-gradient(135deg,var(--hero-start) 0%,var(--hero-end) 100%);color:#fff;text-align:center;padding:90px 0}.hero-inner{padding:56px 0 60px}.hero-content{max-width:820px;margin:0 auto}.hero h1{color:#fff;font-size:2.5rem;margin-bottom:1.25rem}.hero-inner h1{font-size:2.1rem}.hero .lead{color:#fff;font-size:1.15rem;margin:0 auto 2rem;max-width:760px}.hero-inner .lead{margin-bottom:0}.hero code{background:rgba(255,255,255,0.15);border-color:rgba(255,255,255,0.35);color:#fff}.cta-buttons{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem}.cta-buttons .btn-secondary{color:#fff;border-color:#fff}.cta-buttons .btn-secondary:hover{background:rgba(255,255,255,0.2);color:#fff}.breadcrumb ol{display:flex;flex-wrap:wrap;justify-content:center;list-style:none;margin:0 0 1rem;padding:0;font-size:0.9rem}.breadcrumb li + li::before{content:"/";margin:0 0.5rem;color:rgba(255,255,255,0.8)}.breadcrumb a,.breadcrumb span{color:#fff}.content{max-width:980px;padding-top:3.5rem;padding-bottom:4rem}.content h2{font-size:1.75rem;margin-top:3rem;padding-bottom:0.4rem;border-bottom:2px solid var(--light-bg)}.content h2:first-child{margin-top:0}.content h3{font-size:1.2rem;margin-top:2rem}.content li{margin-bottom:0.4rem}.content ul,.content ol{padding-left:1.5rem}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:1.5rem;margin:1.5rem 0 2rem}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem;text-align:center}.card h3{font-size:1.1rem;margin-top:0}.card p:last-child{margin-bottom:0}.card-icon{width:72px;height:72px;margin:0 auto 1rem;display:flex;align-items:center;justify-content:center;background:rgba(52,152,219,0.1);border-radius:50%}.note{background:#f1f8ff;border-left:4px solid #0366d6;border-radius:0 var(--radius) var(--radius) 0;padding:1rem 1.25rem;margin:0 0 2rem}.note p:last-child{margin-bottom:0}.table-wrap{overflow-x:auto;margin:0 0 1.5rem}table{border-collapse:collapse;width:100%;font-size:0.95rem}th,td{border:1px solid var(--border);padding:0.6rem 0.75rem;text-align:left;vertical-align:top}th{background:var(--footer-bg);font-weight:600}th a{color:var(--footer-link)}tbody tr:nth-child(even){background:#f7fafc}blockquote{margin:0 0 1.5rem;padding:0.5rem 1rem;border-left:4px solid var(--border);color:var(--text-muted)}.site-footer{background:var(--footer-bg);border-top:1px solid var(--border);padding:3rem 0 1.5rem;color:var(--text)}.site-footer a{color:var(--footer-link)}.site-footer a:hover{color:var(--link-hover)}.footer-content{display:grid;grid-template-columns:1fr 2fr;gap:2.5rem;margin-bottom:2rem}.footer-name{font-family:var(--mono);font-size:1.4rem;font-weight:700;margin-bottom:0.5rem}.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.link-group h2{font-size:1.05rem;margin-bottom:0.75rem}.link-group ul{list-style:none;margin:0;padding:0}.link-group li{margin-bottom:0.4rem}.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:0.75rem;border-top:1px solid var(--border);padding-top:1rem;font-size:0.9rem}.footer-bottom p{margin:0}.edit-link{display:inline-flex;align-items:center;gap:0.4rem}.edit-link svg{fill:currentColor}@media (max-width:992px){.footer-content{grid-template-columns:1fr}}@media (max-width:860px){.header-content{flex-direction:column;align-items:center}.nav-links{justify-content:center}.nav-links .nav-cta{margin-left:0}}@media (max-width:768px){.hero{padding:56px 0}.hero-inner{padding:40px 0 44px}.hero h1,.hero-inner h1{font-size:1.75rem}.hero .lead{font-size:1.05rem}.content{padding-top:2.5rem}.content h2{font-size:1.45rem}.cta-buttons{flex-direction:column;align-items:center}.cta-buttons a{width:100%;max-width:320px}.footer-links{grid-template-columns:1fr}.nav-links a{padding:0.5rem 0.6rem}}@media print{.site-header,.site-footer,.cta-buttons,.skip-link{display:none}.hero{background:none;color:#000;padding:0}.hero h1,.hero .lead{color:#000}}