:root{color-scheme:dark;--bg:#080f1c;--panel:#101b2b;--line:#263249;--fg:#e9eef8;--muted:#a4b2c9;--accent:#a58aff;--mint:#50dfba}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--fg);font-family:Inter,system-ui,sans-serif;line-height:1.75}a{color:var(--accent);text-underline-offset:4px}a:hover{color:#d1c3ff}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,summary:focus-visible{outline:2px solid var(--mint);outline-offset:5px}.shell{max-width:1200px;margin:auto;padding:0 28px}.site-header{border-bottom:1px solid var(--line);background:#080f1cf2;position:sticky;top:0;z-index:30;backdrop-filter:blur(15px)}.header-inner{min-height:80px;display:flex;align-items:center;gap:25px}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--fg);font-size:21px;font-weight:850;letter-spacing:-.7px;white-space:nowrap}.brand img{width:36px;height:36px}.site-nav{margin-left:auto;display:flex;align-items:center;gap:23px;font-size:13px}.site-nav>a{color:var(--muted);text-decoration:none}.site-nav .nav-cta{color:var(--fg);border:1px solid #6951bf;padding:8px 16px;border-radius:8px;background:#7455dd19}.breadcrumbs{display:flex;gap:9px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin:30px 0}.breadcrumbs a{color:var(--muted);text-decoration:none}.eyebrow{font-size:11px;font-weight:750;letter-spacing:2px;text-transform:uppercase;color:var(--mint)}.hero{padding:35px 0 56px;max-width:900px}.hero h1{font-size:clamp(31px,4.2vw,55px);line-height:1.16;letter-spacing:-1.8px;margin:17px 0 22px;font-weight:800}.hero .lead{font-size:18px;line-height:1.7;max-width:810px;color:var(--muted);margin:0}.meta{display:flex;gap:17px;flex-wrap:wrap;margin-top:24px;font-size:12px;color:#8395b3}.meta span+span:before{content:'·';margin-right:17px;color:#54627b}.article-layout{display:grid;grid-template-columns:minmax(0,780px) 240px;gap:70px;padding-bottom:76px}.prose{font-size:16px;min-width:0}.prose h2{font-size:26px;line-height:1.35;letter-spacing:-.6px;margin:47px 0 18px}.prose section:first-child h2{margin-top:0}.prose p{color:#bfcbdd;margin:0 0 19px}.prose ul,.prose ol{padding-left:22px;color:#bfcbdd;margin:18px 0 24px}.prose li{padding-left:6px;margin-bottom:10px}.formula{border:1px solid #405378;background:#102337;border-radius:10px;padding:22px 24px;margin:25px 0;color:var(--mint);font:500 16px/1.9 'JetBrains Mono',monospace;overflow-x:auto}.toc{position:sticky;top:115px;align-self:start;border-left:1px solid var(--line);padding-left:23px;font-size:12px}.toc strong{display:block;font-size:11px;text-transform:uppercase;letter-spacing:1.6px;color:#cad4e6;margin-bottom:14px}.toc a{display:block;text-decoration:none;color:var(--muted);line-height:1.6;margin:13px 0}.toc a:hover{color:var(--fg)}.note{border-left:3px solid var(--mint);background:#0c211f;padding:17px 21px;color:#b9d9d0;font-size:14px;margin:26px 0}.cta{padding:30px;border:1px solid #584490;border-radius:14px;background:linear-gradient(115deg,#211d3d,#101c2c);margin:35px 0}.cta .eyebrow{color:#b7a1ff}.cta h2,.cta h3{margin:8px 0 12px;font-size:25px;line-height:1.3;letter-spacing:-.5px}.cta p{font-size:14px;color:#b9c3d8;margin:0 0 20px}.cta-links{display:flex;gap:12px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:8px;padding:11px 19px;background:#8058e8;color:white;text-decoration:none;font-weight:700;font-size:13px;line-height:1.5}.button:hover{background:#916bef;color:#fff}.button.secondary{background:transparent;border:1px solid #586580;color:#d1dbee}.faq{border-top:1px solid var(--line);padding-top:18px}.faq details{border-bottom:1px solid var(--line);padding:16px 0}.faq summary{cursor:pointer;font-weight:650;font-size:15px;padding-right:15px}.faq p{padding-top:14px;margin:0;font-size:14px}.sources{font-size:13px;margin:28px 0}.sources h2{font-size:18px;margin:0 0 12px}.sources a{display:block;margin:7px 0}.related{border-top:1px solid var(--line);padding-top:25px;margin-top:40px}.related h2{font-size:20px;margin:0 0 18px}.related a{display:block;text-decoration:none;margin:12px 0;font-size:14px}.site-footer{border-top:1px solid var(--line);padding:30px 0 35px;color:#8e9fb9;font-size:12px}.footer-inner{display:flex;gap:28px;justify-content:space-between;align-items:start}.footer-inner p{margin:0;max-width:690px}.footer-links{display:flex;gap:15px;white-space:nowrap}.hub-hero{padding:65px 0 45px;max-width:850px}.hub-hero h1{font-size:clamp(36px,5vw,60px);line-height:1.12;letter-spacing:-2px;margin:14px 0 24px}.hub-hero p{max-width:750px;font-size:18px;color:var(--muted)}.topic-row{display:flex;gap:9px;flex-wrap:wrap;margin:0 0 38px}.topic-row span{padding:5px 12px;border:1px solid var(--line);border-radius:30px;color:var(--muted);font-size:12px}.article-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-bottom:55px}.article-card{display:flex;flex-direction:column;position:relative;padding:29px;background:var(--panel);border:1px solid var(--line);border-radius:13px;text-decoration:none;color:var(--fg);min-height:260px;transition:border-color .15s,transform .15s}.article-card:hover{border-color:#8064c1;color:white;transform:translateY(-2px)}.article-card .tag{color:var(--mint);font-size:11px;font-weight:650;letter-spacing:.5px}.article-card h2{font-size:23px;line-height:1.35;letter-spacing:-.5px;margin:16px 0 13px}.article-card p{color:var(--muted);font-size:14px;line-height:1.7;margin:0 0 22px}.article-card .card-bottom{margin-top:auto;display:flex;justify-content:space-between;font-size:12px;color:#b6a1ed}.article-card.featured{grid-column:1/-1;min-height:220px;background:linear-gradient(120deg,#211c3d,#101c2b);padding-right:110px}.article-card.featured h2{max-width:730px;font-size:30px}.article-card.featured p{max-width:780px}.article-card.featured:after{content:'↗';position:absolute;right:35px;top:50px;color:#a080ed;font-size:52px}.disclosure{font-size:12px!important;color:#8c9db7!important}.mobile-toc{display:none}.seo-nav-link{font-size:11px;font-weight:650;color:var(--hm,#9daec8);text-decoration:none;padding:10px 14px;min-height:40px;border:1px solid transparent;border-radius:7px;white-space:nowrap;flex-shrink:0;display:inline-flex;align-items:center;gap:7px}.seo-nav-link:hover{color:var(--ha,#a88aff);background:var(--hs,#8050fa20)}@media(max-width:1000px){.article-layout{grid-template-columns:minmax(0,1fr) 210px;gap:35px}}@media(max-width:760px){.shell{padding:0 20px}.header-inner{gap:12px;min-height:68px}.brand{font-size:17px}.brand img{width:30px;height:30px}.site-nav{gap:12px}.site-nav .nav-cta{display:none}.site-nav>a{font-size:12px}.hero{padding:15px 0 35px}.hero h1{letter-spacing:-1px}.hero .lead{font-size:16px}.article-layout{display:block}.toc{display:none}.mobile-toc{display:block;border:1px solid var(--line);border-radius:10px;padding:13px 16px;margin-bottom:30px;font-size:13px}.mobile-toc a{display:block;margin:10px 0;text-decoration:none}.article-grid{grid-template-columns:1fr}.article-card.featured{padding-right:28px}.article-card.featured:after{display:none}.article-card.featured h2{font-size:25px}.article-card{min-height:0}.hub-hero{padding:36px 0 25px}.hub-hero h1{letter-spacing:-1px}.hub-hero p{font-size:16px}.prose h2{font-size:23px;margin-top:35px}.prose{font-size:15px}.cta{padding:23px}.footer-inner{flex-direction:column}.meta{gap:10px}.meta span+span:before{margin-right:10px}}

/* quality-content */
.table-scroll{max-width:100%;overflow:auto;margin:24px 0;border:1px solid var(--line);border-radius:10px}.table-scroll:focus{outline:2px solid #a080ed;outline-offset:2px}.prose table{width:100%;min-width:530px;border-collapse:collapse;font-size:14px}.prose th,.prose td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}.prose th{background:var(--panel);color:var(--fg)}.article-tools{padding:20px;border:1px solid var(--line);border-radius:12px;margin:32px 0}.article-tools strong{display:block;font-size:15px}.article-tools a{display:block;margin-top:12px;font-size:14px}.footer-links{flex-wrap:wrap;white-space:normal}.hub-search{display:grid;grid-template-columns:minmax(0,1fr) minmax(150px,230px) auto;gap:12px;margin:0 0 14px}.hub-search label{font-size:12px;color:var(--muted)}.hub-search input,.hub-search select{display:block;width:100%;box-sizing:border-box;margin-top:7px;min-height:44px;background:var(--panel);color:var(--fg);border:1px solid var(--line);border-radius:9px;padding:10px;font:inherit;font-size:15px}.hub-search button{align-self:end;min-height:44px;padding:10px 14px;cursor:pointer}.article-card[hidden]{display:none!important}.hub-count{color:var(--muted);font-size:13px;margin:12px 0 24px}.hub-empty{padding:24px;border:1px solid var(--line);border-radius:12px}.hub-empty[hidden]{display:none!important}.hub-search[hidden]{display:none!important}@media(max-width:600px){.hub-search{grid-template-columns:minmax(0,1fr)}.hub-search button{justify-self:start}.footer-links{gap:12px}}

.product-links{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}.product-links a{padding:10px 13px;border:1px solid var(--line);border-radius:9px;text-decoration:none;font-size:13px}