:root{color-scheme:dark;--bg:#0b0b12;--bg-elev:#12121c;--bg-soft:#171724;--surface:#1b1b2a;--border:#262638;--border-strong:#34344c;--text:#ecedf5;--text-soft:#b4b6c9;--text-muted:#8a8ca3;--accent:#6366f1;--accent-hover:#7c7ff5;--accent-soft:#6366f124;--accent-text:#a5a8ff;--blue:#3b82f6;--violet:#8b5cf6;--grad:linear-gradient(135deg, #3b82f6 0%, #6366f1 50%, #a855f7 100%);--ok:#34d399;--warn:#fbbf24;--code-bg:#0f0f19;--shadow:0 1px 2px #0006, 0 8px 24px #00000040;--radius:14px;--radius-sm:9px;--maxw:1180px;--readw:720px;--font:ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;--font-mono:ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}:root[data-theme=light]{color-scheme:light;--bg:#fbfbfe;--bg-elev:#fff;--bg-soft:#f3f3fa;--surface:#fff;--border:#e4e4ef;--border-strong:#d2d2e2;--text:#14141f;--text-soft:#3d3f55;--text-muted:#6a6c84;--accent:#4f46e5;--accent-hover:#4338ca;--accent-soft:#4f46e517;--accent-text:#4338ca;--code-bg:#f4f4fb;--shadow:0 1px 2px #1414280f, 0 8px 24px #1414280f}@media (prefers-color-scheme:light){:root:not([data-theme=dark]){color-scheme:light;--bg:#fbfbfe;--bg-elev:#fff;--bg-soft:#f3f3fa;--surface:#fff;--border:#e4e4ef;--border-strong:#d2d2e2;--text:#14141f;--text-soft:#3d3f55;--text-muted:#6a6c84;--accent:#4f46e5;--accent-hover:#4338ca;--accent-soft:#4f46e517;--accent-text:#4338ca;--code-bg:#f4f4fb;--shadow:0 1px 2px #1414280f, 0 8px 24px #1414280f}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:84px}body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:17px;line-height:1.65;overflow-x:hidden}img,svg{max-width:100%;height:auto}a{color:var(--accent-text);text-underline-offset:3px;text-decoration-thickness:1px}a:hover{color:var(--accent-hover)}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}h1,h2,h3,h4{letter-spacing:-.02em;color:var(--text);margin:0 0 .5em;line-height:1.2}h1{font-size:clamp(2rem,4.4vw,3.1rem);font-weight:750}h2{font-size:clamp(1.45rem,2.6vw,1.85rem);font-weight:700}h3{font-size:1.2rem;font-weight:650}p{margin:0 0 1.1em}.skip-link{background:var(--accent);color:#fff;z-index:100;border-radius:8px;padding:8px 14px;position:absolute;top:8px;left:-999px}.skip-link:focus{color:#fff;left:16px}.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}.eyebrow{letter-spacing:.12em;text-transform:uppercase;color:var(--accent-text);margin-bottom:12px;font-size:.78rem;font-weight:650;display:inline-block}.muted{color:var(--text-muted)}.grad-text{background:var(--grad);color:#0000;-webkit-background-clip:text;background-clip:text}.btn{white-space:nowrap;border:1px solid #0000;border-radius:10px;justify-content:center;align-items:center;gap:8px;padding:11px 20px;font-size:.97rem;font-weight:600;line-height:1.2;text-decoration:none;transition:background .15s,border-color .15s,color .15s,transform .15s;display:inline-flex}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px)}.btn-ghost{border-color:var(--border-strong);color:var(--text);background:0 0}.btn-ghost:hover{border-color:var(--accent);color:var(--text)}.btn-sm{padding:8px 14px;font-size:.9rem}.site-header{z-index:50;background:color-mix(in srgb, var(--bg) 82%, transparent);-webkit-backdrop-filter:saturate(160%)blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0}.header-inner{align-items:center;gap:20px;height:66px;display:flex}.logo{color:var(--text);letter-spacing:-.02em;align-items:center;gap:9px;font-size:1.12rem;font-weight:750;text-decoration:none;display:inline-flex}.logo:hover{color:var(--text)}.logo .logo-tag{background:var(--accent-soft);color:var(--accent-text);letter-spacing:.04em;text-transform:uppercase;border-radius:6px;padding:3px 7px;font-size:.72rem;font-weight:600}.main-nav{gap:4px;margin-left:12px;display:flex}.main-nav a{color:var(--text-soft);border-radius:8px;padding:8px 12px;font-size:.95rem;font-weight:520;text-decoration:none}.main-nav a:hover,.main-nav a[aria-current=page]{color:var(--text);background:var(--bg-soft)}.header-actions{align-items:center;gap:8px;margin-left:auto;display:flex}.icon-btn{border:1px solid var(--border);width:38px;height:38px;color:var(--text-soft);cursor:pointer;background:0 0;border-radius:9px;justify-content:center;align-items:center;text-decoration:none;display:inline-flex}.icon-btn:hover{color:var(--text);border-color:var(--border-strong)}.icon-btn svg{width:18px;height:18px}.theme-toggle .sun{display:none}:root[data-theme=light] .theme-toggle .sun{display:block}:root[data-theme=light] .theme-toggle .moon{display:none}@media (prefers-color-scheme:light){:root:not([data-theme=dark]) .theme-toggle .sun{display:block}:root:not([data-theme=dark]) .theme-toggle .moon{display:none}}.menu-toggle,.mobile-nav{display:none}.header-cta-secondary{color:var(--text-soft);padding:8px 10px;font-size:.93rem;text-decoration:none}.header-cta-secondary:hover{color:var(--text)}@media (width<=900px){.main-nav,.header-cta-secondary{display:none}.menu-toggle{display:inline-flex}.mobile-nav[data-open=true]{border-top:1px solid var(--border);background:var(--bg);padding:10px 0 18px;display:block}.mobile-nav a{color:var(--text);padding:12px 20px;font-weight:560;text-decoration:none;display:block}.mobile-nav a:hover{background:var(--bg-soft)}.mobile-nav .mobile-ctas{flex-wrap:wrap;gap:10px;padding:12px 20px 0;display:flex}.mobile-nav .mobile-ctas a{padding:10px 16px;display:inline-flex}}@media (width<=520px){.header-actions .btn-primary{display:none}}.site-footer{border-top:1px solid var(--border);background:var(--bg-elev);margin-top:96px;padding:56px 0 40px;font-size:.95rem}.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;display:grid}.footer-grid h2{text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:14px;font-size:.8rem}.footer-grid ul{margin:0;padding:0;list-style:none}.footer-grid li{margin-bottom:9px}.footer-grid a{color:var(--text-soft);text-decoration:none}.footer-grid a:hover{color:var(--text)}.footer-bottom{border-top:1px solid var(--border);color:var(--text-muted);flex-wrap:wrap;justify-content:space-between;gap:16px;margin-top:40px;padding-top:22px;font-size:.86rem;display:flex}@media (width<=800px){.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}.breadcrumbs{color:var(--text-muted);margin:28px 0 18px;font-size:.88rem}.breadcrumbs ol{flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li+li:before{content:"/";color:var(--border-strong);margin-right:6px}.breadcrumbs a{color:var(--text-muted);text-decoration:none}.breadcrumbs a:hover{color:var(--text)}.breadcrumbs [aria-current=page]{color:var(--text-soft)}.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;display:grid}@media (width<=980px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=640px){.card-grid{grid-template-columns:1fr}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;min-width:0;padding:22px 22px 20px;transition:border-color .15s,transform .15s,box-shadow .15s;display:flex;position:relative}.card:hover{border-color:var(--border-strong);box-shadow:var(--shadow);transform:translateY(-2px)}.card .card-cat{letter-spacing:.08em;text-transform:uppercase;color:var(--accent-text);margin-bottom:10px;font-size:.74rem;font-weight:650}.card h3{margin-bottom:10px;font-size:1.13rem;line-height:1.32}.card h3 a{color:var(--text);text-decoration:none}.card h3 a:after{content:"";border-radius:var(--radius);position:absolute;inset:0}.card p{color:var(--text-soft);margin-bottom:16px;font-size:.95rem}.card .card-meta{color:var(--text-muted);gap:10px;margin-top:auto;font-size:.84rem;display:flex}.card-art{background:var(--grad);opacity:.85;border-radius:4px;height:6px;margin-bottom:18px}.section{margin-top:80px}.section-head{flex-wrap:wrap;justify-content:space-between;align-items:end;gap:20px;margin-bottom:26px;display:flex}.section-head h2{margin:0}.section-head p{color:var(--text-soft);max-width:640px;margin:6px 0 0}.article-layout{grid-template-columns:minmax(0,1fr) 280px;align-items:start;gap:56px;display:grid}@media (width<=1060px){.article-layout{grid-template-columns:1fr}.article-aside{display:none}}.article-header{max-width:var(--readw);margin-bottom:32px}.article-header h1{margin-bottom:18px}.article-lede{color:var(--text-soft);font-size:1.16rem;line-height:1.6}.article-meta{color:var(--text-muted);flex-wrap:wrap;gap:8px 18px;margin-top:18px;font-size:.9rem;display:flex}.answer-box{max-width:var(--readw);background:var(--accent-soft);border:1px solid color-mix(in srgb, var(--accent) 35%, transparent);border-radius:var(--radius);margin:0 0 36px;padding:20px 22px}.answer-box strong.label{letter-spacing:.1em;text-transform:uppercase;color:var(--accent-text);margin-bottom:6px;font-size:.76rem;display:block}.answer-box p{color:var(--text);margin:0}.prose{max-width:var(--readw);font-size:1.06rem}.prose h2{margin-top:2.2em;padding-top:.2em}.prose h3{margin-top:1.8em}.prose p,.prose li{color:var(--text-soft)}.prose strong{color:var(--text)}.prose ul,.prose ol{margin:0 0 1.3em;padding-left:1.3em}.prose li{margin-bottom:.45em}.prose li::marker{color:var(--accent-text)}.prose blockquote{border-left:3px solid var(--accent);color:var(--text-soft);margin:1.6em 0;padding:4px 0 4px 20px;font-style:normal}.prose code{font-family:var(--font-mono);background:var(--code-bg);border:1px solid var(--border);border-radius:6px;padding:1px 6px;font-size:.88em}.prose pre{border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px;font-size:.88rem;overflow-x:auto;background:var(--code-bg)!important}.prose pre code{background:0 0;border:0;padding:0}.prose hr{border:0;border-top:1px solid var(--border);margin:2.4em 0}.prose .table-wrap,.prose table{width:100%}.prose table{border-collapse:collapse;margin:1.4em 0 1.8em;font-size:.95rem;display:block;overflow-x:auto}.prose th,.prose td{text-align:left;border-bottom:1px solid var(--border);vertical-align:top;color:var(--text-soft);padding:10px 14px}.prose th{color:var(--text);background:var(--bg-soft);font-weight:650}.prose a{font-weight:520}.prose .note{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius-sm);margin:1.6em 0;padding:14px 18px}.prose .note p:last-child{margin-bottom:0}.toc{border-left:1px solid var(--border);padding-left:18px;font-size:.9rem;position:sticky;top:92px}.toc h2{letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);margin-bottom:12px;font-size:.76rem}.toc ol{margin:0;padding:0;list-style:none}.toc li{margin-bottom:9px;line-height:1.4}.toc a{color:var(--text-soft);text-decoration:none}.toc a:hover{color:var(--text)}.aside-cta{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);margin-top:28px;padding:18px}.aside-cta p{color:var(--text-soft);margin-bottom:12px;font-size:.9rem}.faq-block{max-width:var(--readw);margin-top:56px}.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);margin-bottom:10px}.faq-item summary{cursor:pointer;color:var(--text);padding:16px 48px 16px 18px;font-weight:620;list-style:none;position:relative}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";color:var(--text-muted);font-size:1.3rem;font-weight:400;position:absolute;top:50%;right:18px;transform:translateY(-50%)}.faq-item[open] summary:after{content:"–"}.faq-item .faq-answer{color:var(--text-soft);padding:0 18px 16px}.faq-item .faq-answer p:last-child{margin-bottom:0}.references{max-width:var(--readw);margin-top:48px;font-size:.93rem}.references ol{color:var(--text-soft);padding-left:1.2em}.references li{margin-bottom:6px}.cta-band{border:1px solid var(--border);background:radial-gradient(120% 140% at 100% 0%, #8b5cf62e, transparent 55%), radial-gradient(100% 120% at 0% 100%, #3b82f629, transparent 50%), var(--surface);border-radius:20px;padding:40px;position:relative;overflow:hidden}.cta-band h2{margin-bottom:10px}.cta-band p{color:var(--text-soft);max-width:640px}.cta-band .cta-actions{flex-wrap:wrap;gap:12px;margin-top:20px;display:flex}.cta-band .cta-fine{color:var(--text-muted);margin-top:14px;font-size:.85rem}@media (width<=640px){.cta-band{padding:26px 20px}}.inline-cta{max-width:var(--readw);border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;margin:2.4em 0;padding:20px 22px;display:flex}.inline-cta p{color:var(--text-soft);flex:320px;margin:0;font-size:.98rem}.inline-cta strong{color:var(--text)}.hero{padding:72px 0 24px;position:relative}.hero:before{content:"";pointer-events:none;z-index:-1;background:radial-gradient(50% 60% at 70% 20%,#6366f133,#0000 70%),radial-gradient(40% 50% at 20% 40%,#3b82f61f,#0000 70%);height:460px;position:absolute;inset:-80px 0 auto}.hero h1{max-width:860px}.hero .hero-sub{color:var(--text-soft);max-width:700px;font-size:1.18rem}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:26px;display:flex}.pill-row{flex-wrap:wrap;gap:10px;margin-top:30px;display:flex}.pill{color:var(--text-soft);border:1px solid var(--border);background:var(--bg-elev);border-radius:999px;padding:6px 13px;font-size:.86rem;text-decoration:none}a.pill:hover{border-color:var(--accent);color:var(--text)}.featured{grid-template-columns:1.25fr 1fr;gap:22px;display:grid}@media (width<=900px){.featured{grid-template-columns:1fr}}.feature-main{background:radial-gradient(90% 120% at 100% 0%, #6366f138, transparent 60%), var(--surface);padding:34px}.feature-main h3{font-size:1.6rem}.feature-stack{gap:22px;display:grid}.paths{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}@media (width<=860px){.paths{grid-template-columns:1fr}}.path{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-elev);color:inherit;padding:22px;text-decoration:none;display:block}.path:hover{border-color:var(--accent);color:inherit}.path .path-num{font-family:var(--font-mono);color:var(--accent-text);font-size:.8rem}.path h3{margin:8px 0 6px;font-size:1.1rem}.path p{color:var(--text-soft);margin:0;font-size:.94rem}.fact-strip{background:var(--border);border:1px solid var(--border);border-radius:var(--radius);grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;display:grid;overflow:hidden}.fact-strip div{background:var(--bg-elev);padding:20px}.fact-strip strong{margin-bottom:4px;font-size:1rem;display:block}.fact-strip span{color:var(--text-muted);font-size:.9rem}@media (width<=860px){.fact-strip{grid-template-columns:1fr 1fr}}@media (width<=480px){.fact-strip{grid-template-columns:1fr}}.page-head{max-width:780px;padding:8px 0 12px}.page-head p{color:var(--text-soft);font-size:1.12rem}.search-box{max-width:640px;position:relative}.search-box input{width:100%;font:inherit;border:1px solid var(--border-strong);background:var(--surface);color:var(--text);border-radius:12px;padding:14px 16px 14px 46px;font-size:1.05rem}.search-box input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.search-box svg{width:18px;color:var(--text-muted);position:absolute;top:50%;left:16px;transform:translateY(-50%)}.search-results{gap:12px;max-width:760px;margin-top:26px;display:grid}.search-result{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);padding:16px 18px;text-decoration:none;display:block}.search-result:hover{border-color:var(--accent)}.search-result strong{color:var(--text);margin-bottom:4px;display:block}.search-result span{color:var(--text-soft);font-size:.93rem}.search-result small{color:var(--accent-text);letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px;font-size:.75rem;display:block}.faq-layout{grid-template-columns:240px minmax(0,1fr);align-items:start;gap:48px;display:grid}@media (width<=900px){.faq-layout{grid-template-columns:1fr}.faq-nav{position:static!important}}.faq-nav{font-size:.93rem;position:sticky;top:92px}.faq-nav ul{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}@media (width<=900px){.faq-nav ul{flex-flow:wrap;gap:8px}.faq-nav a{border:1px solid var(--border)}}.faq-nav a{color:var(--text-soft);border-radius:8px;padding:7px 12px;text-decoration:none;display:block}.faq-nav a:hover{background:var(--bg-soft);color:var(--text)}.faq-group{margin-bottom:52px}.faq-group>h2{margin-bottom:18px}.faq-group .faq-item .faq-answer a{font-weight:520}.notice{color:var(--text-muted);font-size:.88rem}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}@media print{.site-header,.site-footer,.article-aside,.cta-band,.inline-cta{display:none!important}body{color:#000;background:#fff}}.mobile-nav .mobile-ctas a.btn-primary{color:#fff}.mobile-nav .mobile-ctas a.btn-primary:hover{background:var(--accent-hover)}