@font-face{font-family:OverShell Sans;src:local(Aptos),local(Segoe UI);font-display:swap}:root{--ink:#0b1520;--ink-soft:#304254;--muted:#526779;--paper:#fff;--paper-alt:#f4f8fb;--night:#07131f;--night-2:#0d2233;--blue:#0077b6;--cyan:#42c8f5;--cyan-soft:#dff6ff;--line:#dce5ec;--success:#167a5b;--warning:#9b6210;--radius-sm:10px;--radius:18px;--radius-lg:28px;--shadow:0 18px 50px #07131f14;--shell:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);background:var(--paper);text-rendering:optimizelegibility;margin:0;font-family:OverShell Sans,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:17px;line-height:1.65}img,svg{max-width:100%}a{color:inherit}button,input,select,textarea{font:inherit}.skip-link{z-index:1000;color:#fff;background:var(--night);border-radius:var(--radius-sm);padding:12px 18px;position:fixed;top:-100px;left:16px}.skip-link:focus{top:16px}:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}.shell{width:min(var(--shell), calc(100% - 40px));margin-inline:auto}.narrow{width:min(780px,100% - 40px);margin-inline:auto}.section{padding-block:92px}.section-tight{padding-block:64px}.section-alt{background:var(--paper-alt)}.section-night{color:#eef9ff;background:var(--night)}.site-header{z-index:100;backdrop-filter:blur(14px);background:#fffffff0;border-bottom:1px solid #07131f14;position:sticky;top:0}.nav-wrap{align-items:center;gap:32px;min-height:76px;display:flex}.brand{align-items:center;gap:11px;text-decoration:none;display:inline-flex}.brand-mark{border:2px solid var(--blue);border-radius:50%;place-items:center;width:39px;height:39px;display:grid}.brand-mark span{background:var(--blue);width:22px;height:2px}.brand-copy{flex-direction:column;line-height:1;display:flex}.brand-copy strong{letter-spacing:.13em;font-size:15px}.brand-copy small{color:var(--blue);letter-spacing:.25em;margin-top:5px;font-size:10px;font-weight:700}.desktop-nav{align-items:center;gap:26px;margin-left:auto;display:flex}.desktop-nav a{color:var(--ink-soft);font-size:15px;font-weight:650;text-decoration:none}.desktop-nav a:hover,.desktop-nav a[aria-current=page]{color:var(--blue)}.desktop-cta{margin-left:6px}.mobile-nav{margin-left:auto;display:none}.mobile-nav summary{cursor:pointer;place-content:center;gap:5px;width:44px;height:44px;list-style:none;display:grid}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav summary span{background:var(--ink);width:22px;height:2px}.mobile-nav nav{border-bottom:1px solid var(--line);box-shadow:var(--shadow);background:#fff;padding:20px;display:grid;position:absolute;inset:76px 0 auto}.mobile-nav nav a{border-bottom:1px solid var(--line);padding:13px 8px;font-weight:650;text-decoration:none}.button{color:#fff;background:var(--blue);border:1px solid var(--blue);border-radius:999px;justify-content:center;align-items:center;min-height:50px;padding:12px 22px;font-weight:750;text-decoration:none;transition:transform .16s,background .16s;display:inline-flex}.button:hover{background:#00649a;transform:translateY(-2px)}.button-secondary{color:var(--ink);border-color:var(--line);background:#fff}.button-secondary:hover{background:var(--paper-alt)}.button-small{min-height:42px;padding:9px 17px;font-size:14px}.text-link{color:var(--blue);text-underline-offset:4px;font-weight:750}.eyebrow{color:var(--blue);letter-spacing:.14em;text-transform:uppercase;margin:0 0 18px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:13px;font-weight:800}.section-night .eyebrow{color:var(--cyan)}.display{letter-spacing:-.055em;text-wrap:balance;margin:0;font-size:clamp(2.8rem,7vw,5.7rem);line-height:.98}h1,h2,h3{text-wrap:balance}h2{letter-spacing:-.04em;margin:0 0 20px;font-size:clamp(2rem,4vw,3.4rem);line-height:1.08}h3{margin:0 0 10px;font-size:1.25rem;line-height:1.25}p{margin:0 0 18px}.lead{color:var(--ink-soft);font-size:clamp(1.12rem,2vw,1.35rem);line-height:1.55}.section-night .lead{color:#bcd0dc}.muted{color:var(--muted)}.hero{background:radial-gradient(circle at 83% 10%,#42c8f533,#0000 32%),linear-gradient(#f7fcff 0%,#fff 80%);padding-block:92px 84px;position:relative;overflow:hidden}.hero:before{content:"";top:48px;right:max(24px, calc((100vw - var(--shell))/2));border:1px solid #0077b62e;border-radius:50%;width:180px;height:180px;position:absolute}.hero-grid{grid-template-columns:minmax(0,1.18fr) minmax(340px,.82fr);align-items:center;gap:70px;display:grid;position:relative}.hero .display{font-size:clamp(2.8rem,5.5vw,4.7rem)}.hero-copy .lead{max-width:720px;margin-top:28px}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:34px;display:flex}.hero-note{color:var(--muted);margin-top:18px;font-size:14px}.path-panel{color:#dff5ff;background:var(--night);border-radius:var(--radius-lg);border:1px solid #1b4058;padding:28px;position:relative;box-shadow:0 30px 80px #07131f33}.path-panel:after{content:"";pointer-events:none;border:1px solid #62d4ff1c;border-radius:20px;position:absolute;inset:14px}.panel-label{color:var(--cyan);letter-spacing:.13em;text-transform:uppercase;font:700 12px/1 ui-monospace,monospace}.path-list{z-index:1;counter-reset:path;margin:26px 0 0;padding:0;list-style:none;position:relative}.path-list li{counter-increment:path;border-top:1px solid #ffffff1f;grid-template-columns:34px 1fr;gap:14px;padding:17px 0;display:grid}.path-list li:before{content:"0" counter(path);color:var(--cyan);font:700 12px/1.5 ui-monospace,monospace}.path-list strong{color:#fff;display:block}.path-list span{color:#9eb5c3;font-size:14px}.proof-strip{border-block:1px solid var(--line)}.proof-row{grid-template-columns:1.2fr repeat(4,1fr);align-items:stretch;display:grid}.proof-intro,.proof-item{border-right:1px solid var(--line);padding:27px 24px}.proof-intro{color:var(--muted);padding-left:0;font-size:14px}.proof-item strong{font-size:15px;display:block}.proof-item span{color:var(--muted);font-size:13px}.section-head{grid-template-columns:1fr minmax(280px,.65fr);align-items:end;gap:60px;margin-bottom:48px;display:grid}.section-head p{color:var(--muted)}.route-grid{grid-template-columns:repeat(12,1fr);gap:18px;display:grid}.route{border:1px solid var(--line);border-radius:var(--radius);background:#fff;min-height:260px;padding:28px;text-decoration:none;transition:border-color .16s,transform .16s;position:relative;overflow:hidden}.route:hover{border-color:var(--blue);transform:translateY(-4px)}.route:first-child{grid-column:span 6}.route:nth-child(2),.route:nth-child(3){grid-column:span 3}.route:nth-child(4){grid-column:span 4}.route:nth-child(5){grid-column:span 8}.route-code{color:var(--blue);letter-spacing:.1em;font:700 12px/1 ui-monospace,monospace}.route h3{margin-top:58px;font-size:clamp(1.35rem,2vw,1.85rem)}.route p{max-width:540px;color:var(--muted)}.route-arrow{color:var(--blue);font-size:24px;position:absolute;top:22px;right:24px}.learning-map{grid-template-columns:310px 1fr;gap:70px;display:grid}.map-nav{background:var(--paper-alt);border:1px solid var(--line);border-radius:var(--radius);align-self:start;padding:24px;position:sticky;top:112px}.map-nav strong{margin-bottom:12px;display:block}.map-nav a{color:var(--muted);border-top:1px solid var(--line);padding:9px 0;text-decoration:none;display:block}.map-nav a:hover{color:var(--blue)}.map-content article{border-left:1px solid var(--line);padding:0 0 42px 48px}.map-content article:last-child{padding-bottom:0}.map-content .number{color:#fff;background:var(--blue);border-radius:50%;justify-content:center;align-items:center;width:34px;height:34px;margin:0 0 18px -65px;font:700 12px/1 ui-monospace,monospace;display:inline-flex}.map-content h3{font-size:1.55rem}.map-content p{color:var(--muted)}.program-panel{border-radius:var(--radius-lg);border:1px solid #1d4058;grid-template-columns:1fr 1fr;display:grid;overflow:hidden}.program-copy{padding:56px}.program-copy ul{color:#bcd0dc;padding-left:20px}.program-copy .button{background:var(--cyan);border-color:var(--cyan);color:var(--night);margin-top:18px}.program-syllabus{background:var(--night-2);padding:34px}.module{border-top:1px solid #ffffff1f;grid-template-columns:46px 1fr;gap:15px;padding:19px 0;display:grid}.module:first-child{border-top:0}.module b{color:var(--cyan);font:700 12px/1.5 ui-monospace,monospace}.module strong{color:#fff;display:block}.module span{color:#9eb5c3;font-size:14px}.author-grid{grid-template-columns:.75fr 1.25fr;align-items:start;gap:70px;display:grid}.author-card{color:#fff;background:var(--night);border-radius:var(--radius-lg);padding:28px}.avatar-code{aspect-ratio:1.2;background:#0d2538;border:1px solid #1d4560;border-radius:18px;place-items:center;margin-bottom:24px;display:grid}.avatar-code span{color:var(--cyan);letter-spacing:-.06em;font:800 clamp(1.8rem,5vw,3.8rem)/1 ui-monospace,monospace}.author-card small{color:#9eb5c3}.fact-list{border-top:1px solid var(--line);gap:0;margin-top:30px;display:grid}.fact{border-bottom:1px solid var(--line);grid-template-columns:160px 1fr;gap:20px;padding:18px 0;display:grid}.fact b{color:var(--blue);letter-spacing:.08em;text-transform:uppercase;font:700 12px/1.6 ui-monospace,monospace}.page-hero{background:var(--paper-alt);border-bottom:1px solid var(--line);padding-block:80px 68px}.page-hero .display{max-width:940px;font-size:clamp(2.7rem,6vw,5rem)}.page-hero .lead{max-width:780px;margin-top:26px}.breadcrumbs{color:var(--muted);flex-wrap:wrap;gap:8px;margin-bottom:25px;font-size:14px;display:flex}.breadcrumbs a{color:var(--blue)}.article-layout{grid-template-columns:230px minmax(0,760px);justify-content:center;gap:70px;display:grid}.toc{border-left:2px solid var(--line);align-self:start;padding-left:16px;position:sticky;top:112px}.toc strong{margin-bottom:10px;font-size:14px;display:block}.toc a{color:var(--muted);padding:5px 0;font-size:14px;text-decoration:none;display:block}.prose h2{margin-top:64px;font-size:2.1rem}.prose h3{margin-top:32px}.prose p,.prose li{color:var(--ink-soft)}.prose li+li{margin-top:8px}.prose a{color:var(--blue)}.note{background:var(--cyan-soft);border-radius:var(--radius-sm);margin:28px 0;padding:22px 24px}.note strong{margin-bottom:6px;display:block}.resource-list{gap:14px;display:grid}.resource-item{border:1px solid var(--line);border-radius:var(--radius);grid-template-columns:150px 1fr auto;align-items:center;gap:24px;padding:22px 24px;text-decoration:none;display:grid}.resource-item:hover{border-color:var(--blue)}.resource-type{color:var(--blue);text-transform:uppercase;letter-spacing:.1em;font:700 12px/1 ui-monospace,monospace}.resource-item p{color:var(--muted);margin:3px 0 0;font-size:15px}.cta-band{background:var(--cyan-soft);border-radius:var(--radius-lg);grid-template-columns:1fr auto;align-items:center;gap:40px;padding:58px;display:grid}.cta-band h2{margin-bottom:8px;font-size:clamp(1.8rem,3vw,2.7rem)}.cta-band p{color:var(--ink-soft);margin:0}.site-footer{color:#dceaf3;background:var(--night);padding-top:72px}.footer-grid{grid-template-columns:1.7fr repeat(3,1fr);gap:50px;display:grid}.brand-footer{color:#fff;margin-bottom:18px}.site-footer .brand-copy small{color:var(--cyan)}.site-footer p{color:#91a9b8;max-width:360px}.site-footer h2{color:#fff;letter-spacing:.06em;text-transform:uppercase;margin:0 0 15px;font-size:14px}.site-footer a:not(.brand){color:#a9beca;margin:8px 0;text-decoration:none;display:block}.site-footer a:hover{color:var(--cyan)}.footer-bottom{color:#7992a2;border-top:1px solid #183247;justify-content:space-between;gap:20px;margin-top:56px;padding-block:22px;font-size:13px;display:flex}@media (width<=920px){.desktop-nav,.desktop-cta{display:none}.mobile-nav{display:block}.hero-grid,.program-panel,.author-grid,.section-head,.learning-map,.article-layout{grid-template-columns:1fr}.hero-grid{gap:48px}.proof-row{grid-template-columns:1fr 1fr}.proof-intro{border-bottom:1px solid var(--line);grid-column:1/-1}.route:nth-child(n){grid-column:span 6}.map-nav,.toc{position:static}.map-nav{display:none}.article-layout{gap:28px}.toc{border-left:0;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:8px 18px;padding:0 0 18px;display:flex}.toc strong{width:100%}.program-copy{padding:40px 30px}.footer-grid{grid-template-columns:1.5fr 1fr}}@media (width<=620px){body{font-size:16px}.shell,.narrow{width:min(100% - 28px, var(--shell))}.section{padding-block:64px}.hero{padding-block:64px 56px}.hero:before{display:none}.hero-actions .button{width:100%}.path-panel{border-radius:20px;padding:22px}.proof-row{grid-template-columns:1fr}.proof-intro,.proof-item{border-right:0;border-bottom:1px solid var(--line);padding-left:0}.route:nth-child(n){grid-column:1/-1;min-height:auto}.route h3{margin-top:42px}.map-content article{padding-left:34px}.map-content .number{margin-left:-51px}.program-syllabus{padding:24px}.fact{grid-template-columns:1fr;gap:4px}.resource-item{grid-template-columns:1fr;gap:8px}.resource-item>span:last-child{display:none}.cta-band{grid-template-columns:1fr;padding:32px 24px}.cta-band .button{width:100%}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}