:root{--bg:#100721;--panel:#1b0d38;--text:#fff;--muted:#c9bfd5;--pink:#ff3aa7;--teal:#22e1d0;--line:rgba(255,255,255,.12);--shell:min(980px,calc(100% - 36px))}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 80% 0,rgba(159,124,255,.15),transparent 32%),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.65}a{color:inherit}.shell{width:var(--shell);margin:auto}.bar{border-bottom:1px solid var(--line);background:rgba(18,8,38,.95)}.bar .shell{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{text-decoration:none;font-weight:900;letter-spacing:.04em}.brand b{color:var(--pink)}.bar nav{display:flex;gap:16px}.bar nav a{font-size:12px;color:#d6cede;text-decoration:none}.hero{padding:76px 0 54px}.eyebrow{color:var(--teal);font-size:11px;font-weight:900;letter-spacing:.14em;text-transform:uppercase}.hero h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(42px,7vw,72px);line-height:1.02;letter-spacing:-.04em;margin:12px 0 18px}.lede{max-width:760px;color:var(--muted);font-size:18px}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 18px;border-radius:999px;text-decoration:none;font-weight:900;font-size:12px;background:linear-gradient(110deg,var(--pink),#9dbbd1);color:#13051f}.btn.alt{background:transparent;color:#fff;border:1px solid var(--line)}section.content{padding:34px 0 70px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.card{padding:22px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.04)}.card h2,.card h3{margin:0 0 8px}.card p,.card li{color:var(--muted);font-size:15px}.wide{margin-top:18px;padding:26px;border:1px solid var(--line);border-radius:20px;background:rgba(255,255,255,.035)}.wide h2{font-family:Georgia,"Times New Roman",serif;font-size:32px;margin:0 0 12px}.wide p,.wide li{color:var(--muted)}.callout{margin-top:28px;padding:22px;border-left:3px solid var(--teal);background:rgba(34,225,208,.055);border-radius:0 14px 14px 0}.footer{border-top:1px solid var(--line);padding:28px 0 40px;color:#a99db7;font-size:11px}.footer .shell{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between}.footer a{color:#cfc5db}@media(max-width:760px){.grid{grid-template-columns:1fr}.bar nav{display:none}.hero{padding-top:54px}.lede{font-size:16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* v39 evergreen content system */
.article-shell{max-width:980px}.reading-note{margin:18px 0 24px;padding:14px 16px;border-left:3px solid var(--teal);background:rgba(34,225,208,.06);color:var(--muted);font-size:15px;line-height:1.65}.decision-box{margin:0 0 26px;padding:24px;border:1px solid rgba(255,79,172,.18);border-radius:20px;background:rgba(255,79,172,.05)}.decision-box span,.step-kicker,.example-grid span{display:block;color:var(--teal);font-size:10px;font-weight:900;letter-spacing:.11em;text-transform:uppercase}.decision-box h2{margin:8px 0 0;font-size:clamp(24px,4vw,34px);line-height:1.2}.guide-grid .card{min-height:100%}.step-kicker{margin-bottom:8px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}.library-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.library-card{display:flex;flex-direction:column;padding:22px;border:1px solid var(--line);border-radius:18px;background:var(--card);text-decoration:none}.library-card span{color:var(--teal);font-size:9px;font-weight:900;letter-spacing:.11em}.library-card h2{margin:8px 0 8px;font-size:19px}.library-card p{margin:0 0 16px;color:var(--muted);font-size:15px;line-height:1.6}.library-card b{margin-top:auto;color:#fff;font-size:12px}.example-case{margin:0 0 24px;padding:26px;border:1px solid var(--line);border-radius:22px;background:var(--card)}.example-case h2{margin:7px 0 18px;font-size:26px}.example-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.example-grid>div{padding:16px;border-radius:14px;background:rgba(0,0,0,.13)}.example-grid p{margin:6px 0 0;color:var(--muted);font-size:15px;line-height:1.65}.library-links{margin-top:22px}@media(max-width:800px){.library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:620px){.library-grid,.two-col,.example-grid{grid-template-columns:1fr}.article-shell{max-width:none}}

.guide-review-note{margin:-6px 0 24px;color:#9f94af;font-size:13px;font-weight:700;letter-spacing:.02em}.practice-example{border-color:rgba(159,124,255,.22);background:rgba(159,124,255,.055)}.practice-example .example-label{display:block;margin-bottom:8px;color:var(--pink);font-size:11px;font-weight:900;letter-spacing:.11em;text-transform:uppercase}.official-links ul{margin:12px 0 0;padding-left:20px}.official-links li{margin:8px 0}.official-links a{color:#8ff7ee;text-underline-offset:3px}.official-links small{display:block;margin-top:12px;color:#9f94af;font-size:12px;line-height:1.55}

.skip-link{position:fixed;left:12px;top:-80px;z-index:9999;padding:10px 14px;border-radius:8px;background:#fff;color:#120826;font-weight:800;text-decoration:none}.skip-link:focus{top:12px}


/* v41 responsive navigation + footer architecture */
.mobile-nav-toggle,.mobile-snapshot-link{display:none}.mobile-nav-panel{display:none}
@media(max-width:900px){
  .bar{position:sticky;top:0;z-index:60;background:rgba(18,8,38,.985)}
  .bar .shell{gap:9px}
  .mobile-snapshot-link{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 11px;border:1px solid rgba(255,58,167,.5);border-radius:999px;background:linear-gradient(110deg,#ff3aa7,#ff68b9);color:#160723;text-decoration:none;font-size:9px;font-weight:900;letter-spacing:.05em}
  .mobile-nav-toggle{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 12px;border:1px solid rgba(255,255,255,.16);border-radius:999px;background:rgba(255,255,255,.04);color:#fff;font:inherit;font-size:9px;font-weight:900;letter-spacing:.06em;text-transform:uppercase;cursor:pointer}
  .bar.menu-open .mobile-nav-panel{display:block}
  .mobile-nav-panel{border-top:1px solid var(--line);background:rgba(18,8,38,.99)}
  .mobile-nav-inner{width:var(--shell);margin:auto;padding:12px 0 16px;display:grid;grid-template-columns:1fr;gap:7px}
  .mobile-nav-inner a{min-height:42px;display:flex;align-items:center;padding:9px 12px;border:1px solid rgba(255,255,255,.08);border-radius:11px;background:rgba(255,255,255,.025);color:#ded7ec;text-decoration:none;font-size:11px;font-weight:760}
  .mobile-nav-inner .mobile-nav-primary{background:rgba(255,58,167,.11);border-color:rgba(255,58,167,.3);color:#ffd4ea}
  .mobile-nav-inner .mobile-nav-contact{background:rgba(34,225,208,.075);border-color:rgba(34,225,208,.22);color:#bff8f1}
}
@media(max-width:390px){.bar .brand{font-size:12px}.mobile-snapshot-link,.mobile-nav-toggle{padding-inline:9px}}
.footer{padding:42px 0 24px}
.footer-shell{display:grid!important;grid-template-columns:minmax(210px,1.35fr) repeat(3,minmax(120px,1fr));gap:30px 38px;align-items:start}
.footer-brand-block{max-width:290px}.footer-wordmark{display:inline-block;margin-bottom:11px;color:#fff!important;text-decoration:none;font-weight:900;letter-spacing:.04em}.footer-wordmark b{color:var(--pink)}
.footer-brand-block p{margin:0;color:#a99db7;font-size:12px;line-height:1.65}.footer-column{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.footer-column strong{margin-bottom:2px;color:#fff;font-size:10px;font-weight:900;letter-spacing:.11em;text-transform:uppercase}.footer-column a{color:#cfc5db;font-size:11px;text-decoration:none}.footer-bottom{grid-column:1/-1;display:flex;justify-content:space-between;gap:14px;padding-top:20px;border-top:1px solid var(--line);color:#8f849c;font-size:10px}
@media(max-width:820px){.footer-shell{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-brand-block{grid-column:1/-1;max-width:540px}.footer-bottom{grid-column:1/-1}}
@media(max-width:520px){.footer-shell{grid-template-columns:1fr;gap:24px}.footer-brand-block,.footer-bottom{grid-column:auto}.footer-bottom{flex-direction:column;gap:4px}}


/* v45 authored secondary-page system */
.bar nav .nav-cta{padding:7px 11px;border-radius:999px;background:linear-gradient(110deg,var(--pink),#ff68b9);color:#160723;font-weight:900}.signature-rule{position:relative;width:min(430px,100%);height:24px;margin-top:30px}.signature-rule:before{content:"";position:absolute;left:0;right:0;top:11px;height:1px;background:linear-gradient(90deg,rgba(255,58,167,.2),#ff3aa7,#22e1d0,#9f7cff,rgba(34,225,208,.2))}.signature-rule i{position:absolute;top:7px;width:9px;height:9px;border-radius:50%;background:var(--bg);border:2px solid var(--pink)}.signature-rule i:nth-child(1){left:0}.signature-rule i:nth-child(2){left:25%;border-color:#ff77c4}.signature-rule i:nth-child(3){left:50%;border-color:var(--teal)}.signature-rule i:nth-child(4){left:75%;border-color:#9f7cff}.signature-rule i:nth-child(5){right:0;border-color:var(--teal)}
.decision-visual{margin:0 0 30px;padding:22px 22px 17px;border:1px solid rgba(255,255,255,.11);border-radius:24px;background:linear-gradient(160deg,rgba(255,255,255,.045),rgba(255,255,255,.015));overflow:hidden}.decision-visual-head span{display:block;color:var(--teal);font-size:9px;font-weight:900;letter-spacing:.14em}.decision-visual-head strong{display:block;margin-top:5px;font-family:Georgia,"Times New Roman",serif;font-size:20px;line-height:1.25}.decision-visual svg{display:block;width:100%;height:auto;max-height:360px;margin:7px auto}.decision-visual figcaption{padding-top:12px;border-top:1px solid var(--line);color:#a99db7;font-size:12px;line-height:1.55}.dv-line{fill:none;stroke:rgba(255,255,255,.17);stroke-width:2}.dv-box{fill:rgba(255,255,255,.035);stroke:rgba(255,255,255,.14);stroke-width:1}.dv-box-accent{fill:rgba(34,225,208,.07);stroke:rgba(34,225,208,.32)}.dv-dot{fill:#ff3aa7;stroke:#160a2b;stroke-width:5}.dv-dot.dv-accent{fill:#22e1d0}.dv-core{fill:rgba(159,124,255,.09);stroke:rgba(159,124,255,.34);stroke-width:1}.dv-text{fill:#e9e3f0;font-family:Inter,ui-sans-serif,system-ui,sans-serif;font-size:15px;font-weight:750}.dv-text.dv-strong{fill:#fff;font-weight:900}.dv-small{fill:#22e1d0;font-family:Inter,ui-sans-serif,system-ui,sans-serif;font-size:9px;font-weight:900;letter-spacing:1.2px}.library-map{margin-bottom:28px}.method-visual{margin-bottom:30px}
@media(max-width:760px){.bar nav .nav-cta{padding:0;background:none;color:#d6cede}.decision-visual{padding:17px 13px 14px;border-radius:18px}.decision-visual-head strong{font-size:18px}.decision-visual svg{min-width:640px;width:640px;transform-origin:left center}.decision-visual{overflow-x:auto;scrollbar-width:thin}.decision-visual figcaption{min-width:0}.signature-rule{margin-top:24px}}

.decision-visual:focus-visible{outline:3px solid var(--teal);outline-offset:4px}

@media(max-width:900px){.bar nav{display:none}.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.guide-grid{grid-template-columns:1fr}}


/* v46 editorial deep-page refinement */
.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin:0 0 20px;color:#9f94af;font-size:12px;font-weight:700}
.breadcrumbs a{color:#bff8f1;text-decoration:none}.breadcrumbs a:hover{text-decoration:underline;text-underline-offset:3px}.breadcrumbs span[aria-current="page"]{color:#c9bfd5}
.editorial-steps{list-style:none;margin:30px 0 8px;padding:0;border-top:1px solid var(--line)}
.editorial-steps>li{display:grid;grid-template-columns:52px 1fr;gap:18px;padding:24px 0;border-bottom:1px solid var(--line)}
.editorial-steps .step-kicker{grid-column:1;grid-row:1/3;margin:2px 0 0;color:var(--teal);font-size:11px}
.editorial-steps h2{grid-column:2;margin:0 0 7px;font-family:Georgia,"Times New Roman",serif;font-size:25px;line-height:1.22}
.editorial-steps p{grid-column:2;margin:0;color:var(--muted);font-size:16px;line-height:1.7}
/* Reduce box fatigue in the main article while preserving high-value callouts. */
.article-shell>.two-col{margin-top:26px;padding-top:2px;border-top:1px solid var(--line)}
.article-shell>.two-col>.wide{margin-top:0;padding:24px 0;border:0;border-radius:0;background:none}
.article-shell>.wide:not(.practice-example):not(.official-links):not(.related-paths){padding:26px 0;border-width:1px 0 0;border-radius:0;background:none}
.decision-visual-mobile{display:none}
@media(max-width:620px){
  .editorial-steps>li{grid-template-columns:38px 1fr;gap:12px;padding:20px 0}
  .editorial-steps h2{font-size:22px}.editorial-steps p{font-size:15px}
  .decision-visual{overflow:hidden}
  .decision-visual svg{display:none}
  .decision-visual-mobile{display:grid;gap:0;margin:18px 0 16px}
  .dv-mobile-node{position:relative;display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:center;min-height:58px;padding:8px 0}
  .dv-mobile-node:not(:last-child):after{content:"";position:absolute;left:16px;top:43px;bottom:-9px;width:1px;background:linear-gradient(#22e1d0,rgba(159,124,255,.35))}
  .dv-mobile-node span{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;border:1px solid rgba(34,225,208,.35);background:#120826;color:var(--teal);font-size:9px;font-weight:900;z-index:1}
  .dv-mobile-node strong{font-size:15px;line-height:1.3}
}