:root{--bg: #fafaf9;--surface: #ffffff;--ink: #1d1d1f;--ink-2: #6e6e73;--ink-3: #9a9a9e;--line: #e7e7e4;--line-strong: #d9d9d6;--shadow: 0 1px 2px rgba(29, 29, 31, .04), 0 8px 24px rgba(29, 29, 31, .05);--radius: 14px;--nav-h: 60px;--c-graphite: #41576b;--c-bronze: #8c6a3f;--c-steel: #3c6e8f;--c-pine: #2f6d5a;--c-violet: #5c4e8e;--c-terra: #9a5a44;--accent: var(--c-graphite)}[data-theme=dark]{--bg: #101012;--surface: #18181b;--ink: #f5f5f4;--ink-2: #a1a1a6;--ink-3: #6e6e73;--line: #27272a;--line-strong: #333336;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35);--c-graphite: #9db4c8;--c-bronze: #cdab7e;--c-steel: #92bbd4;--c-pine: #82b8a6;--c-violet: #aba0d6;--c-terra: #d09c8a}[data-accent=bronze]{--accent: var(--c-bronze)}[data-accent=steel]{--accent: var(--c-steel)}[data-accent=pine]{--accent: var(--c-pine)}[data-accent=violet]{--accent: var(--c-violet)}[data-accent=terra]{--accent: var(--c-terra)}:root{--accent-soft: color-mix(in srgb, var(--accent) 9%, transparent)}[data-theme=dark]{--accent-soft: color-mix(in srgb, var(--accent) 12%, transparent)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 24px)}body{font-family:Instrument Sans,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased;transition:background .35s ease,color .35s ease}::selection{background:var(--accent);color:var(--bg)}.mono{font-family:Spline Sans Mono,ui-monospace,monospace}a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}.wrap{max-width:1080px;margin:0 auto;padding:0 24px}nav.site-nav{position:sticky;top:0;z-index:50;height:var(--nav-h);background:color-mix(in srgb,var(--bg) 78%,transparent);-webkit-backdrop-filter:saturate(1.4) blur(16px);backdrop-filter:saturate(1.4) blur(16px);border-bottom:1px solid var(--line)}.nav-inner{max-width:1080px;margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}.wordmark{font-family:Spline Sans Mono,monospace;font-size:15px;font-weight:500;letter-spacing:-.02em}.wordmark span{color:var(--ink-3)}.nav-links{display:flex;align-items:center;gap:26px;font-size:14.5px;font-weight:500;color:var(--ink-2)}.nav-links a{transition:color .2s;padding-bottom:2px;border-bottom:1.5px solid transparent}.nav-links a:hover{color:var(--ink)}.nav-links a[aria-current=page]{color:var(--ink);border-bottom-color:var(--accent)}.theme-btn{width:34px;height:34px;border-radius:50%;border:1px solid var(--line-strong);background:var(--surface);color:var(--ink-2);cursor:pointer;display:grid;place-items:center;transition:color .2s,border-color .2s;flex-shrink:0}.theme-btn:hover{color:var(--ink);border-color:var(--ink-3)}.theme-btn svg{width:15px;height:15px}[data-theme=dark] .icon-moon,[data-theme=light] .icon-sun{display:none}@media(max-width:820px){.nav-links a{display:none}}.page-hero{position:relative;padding:96px 0 56px;overflow:hidden}.page-hero:before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(720px 380px at 22% -10%,var(--accent-soft),transparent 72%)}.page-hero>.wrap{position:relative}.eyebrow{font-family:Spline Sans Mono,monospace;font-size:12.5px;letter-spacing:.08em;color:var(--accent);display:flex;align-items:center;gap:10px}.eyebrow:before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block;opacity:.6}.display{font-size:clamp(40px,6.4vw,72px);font-weight:600;letter-spacing:-.035em;line-height:1.05;margin:18px 0 20px;text-wrap:balance}.display em{font-style:italic;font-weight:400;color:var(--ink-2)}.lede{max-width:580px;font-size:19px;color:var(--ink-2);line-height:1.65}.lede strong{color:var(--ink);font-weight:600}.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.chip{font-family:Spline Sans Mono,monospace;font-size:12.5px;color:var(--ink-2);border:1px solid var(--line-strong);border-radius:999px;padding:6px 14px;background:var(--surface)}@media(max-width:760px){.page-hero{padding-top:64px}}.block{padding:76px 0;border-top:1px solid var(--line)}.block.first{border-top:none;padding-top:28px}.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}h2.sec-title{font-size:clamp(26px,3.6vw,36px);font-weight:600;letter-spacing:-.03em;line-height:1.15}.sec-route{font-family:Spline Sans Mono,monospace;font-size:12.5px;color:var(--ink-3)}.diagram-section{padding:20px 0 40px}.diagram-caption{font-family:Spline Sans Mono,monospace;font-size:12px;color:var(--ink-3);margin-bottom:14px;letter-spacing:.04em}.diagram-scroll{overflow-x:auto;padding-bottom:8px}.diagram-scroll svg{display:block;min-width:760px;width:100%;height:auto}.d-box{fill:var(--surface);stroke:var(--line-strong);stroke-width:1}.d-box-main{stroke:var(--ink-3)}.d-line{fill:none;stroke:var(--line-strong);stroke-width:1.25}.d-label{font-family:Spline Sans Mono,monospace;font-size:13px;fill:var(--ink);font-weight:500}.d-sub{font-family:Spline Sans Mono,monospace;font-size:10.5px;fill:var(--ink-3)}.d-route{font-family:Spline Sans Mono,monospace;font-size:10.5px;fill:var(--ink-2)}.d-node{cursor:pointer}.d-node .d-box{transition:stroke .2s}.d-node:hover .d-box{stroke:var(--node-c, var(--accent))}.d-node:hover .d-label,.d-dot{fill:var(--node-c, var(--accent))}.d-arrow{fill:var(--line-strong)}.n-bronze{--node-c: var(--c-bronze)}.n-steel{--node-c: var(--c-steel)}.n-pine{--node-c: var(--c-pine)}.n-violet{--node-c: var(--c-violet)}.n-terra{--node-c: var(--c-terra)}@media(prefers-reduced-motion:no-preference){.draw{stroke-dasharray:600;stroke-dashoffset:600;animation:draw 1.4s ease forwards .25s}.fade-d{opacity:0;animation:fadeD .7s ease forwards}@keyframes draw{to{stroke-dashoffset:0}}@keyframes fadeD{to{opacity:1}}}.previews{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.preview{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:24px 24px 20px;display:flex;flex-direction:column;gap:10px;transition:border-color .25s,transform .25s}.preview:hover{border-color:var(--node-c, var(--accent));transform:translateY(-2px)}.preview .p-dot{width:8px;height:8px;border-radius:50%;background:var(--node-c, var(--accent))}.preview h3{font-size:17.5px;font-weight:600;letter-spacing:-.01em}.preview p{font-size:14.5px;color:var(--ink-2);line-height:1.55;flex-grow:1}.preview .go{font-family:Spline Sans Mono,monospace;font-size:12.5px;color:var(--node-c, var(--accent))}@media(max-width:860px){.previews{grid-template-columns:1fr 1fr}}@media(max-width:560px){.previews{grid-template-columns:1fr}}.story-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:56px;align-items:start}.story-text p{color:var(--ink-2);margin-bottom:20px;max-width:58ch}.story-text p strong{color:var(--ink);font-weight:600}.story-aside{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:26px;box-shadow:var(--shadow)}.story-aside h3{font-size:13px;font-family:Spline Sans Mono,monospace;font-weight:500;color:var(--accent);letter-spacing:.06em;margin-bottom:16px}.fact{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px}.fact:last-child{border-bottom:none}.fact dt{color:var(--ink-2)}.fact dd{font-weight:600;text-align:right}.toolbox{margin-top:22px;font-family:Spline Sans Mono,monospace;font-size:12.5px;color:var(--ink-2);line-height:2}@media(max-width:860px){.story-grid{grid-template-columns:1fr}}.xp{display:grid;grid-template-columns:200px 1fr;gap:32px;padding:36px 0;border-bottom:1px solid var(--line)}.xp:last-child{border-bottom:none}.xp-when{font-family:Spline Sans Mono,monospace;font-size:13px;color:var(--ink-2);padding-top:5px;line-height:1.8}.xp-when .now{display:inline-block;font-size:11px;color:var(--accent);border:1px solid currentColor;border-radius:999px;padding:1px 9px;margin-top:6px}.xp h3{font-size:21px;font-weight:600;letter-spacing:-.015em}.xp .role{color:var(--ink-2);font-size:15px;margin:3px 0 16px}.xp ul{list-style:none}.xp li{color:var(--ink-2);font-size:15.5px;padding-left:20px;position:relative;margin-bottom:11px;max-width:64ch}.xp li:before{content:"—";position:absolute;left:0;color:var(--accent);opacity:.75}.xp li strong{color:var(--ink);font-weight:600}@media(max-width:760px){.xp{grid-template-columns:1fr;gap:8px}.xp-when{padding-top:0}}.modules{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}a.module,div.module{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:22px 22px 20px;display:flex;flex-direction:column;gap:8px;min-height:150px;transition:border-color .25s,transform .25s}a.module:hover{border-color:var(--accent);transform:translateY(-2px)}.module .num{font-family:Spline Sans Mono,monospace;font-size:12px;color:var(--accent)}.module h3{font-size:16.5px;font-weight:600;letter-spacing:-.01em}.module p{font-size:14px;color:var(--ink-2);line-height:1.55;flex-grow:1}.module .m-state{font-family:Spline Sans Mono,monospace;font-size:11.5px;color:var(--ink-3)}div.module.soon{opacity:.62}@media(max-width:860px){.modules{grid-template-columns:1fr 1fr}}@media(max-width:560px){.modules{grid-template-columns:1fr}}.sd-foot{margin-top:26px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-family:Spline Sans Mono,monospace;font-size:13px;color:var(--ink-2)}.pulse{width:7px;height:7px;border-radius:50%;background:var(--accent);position:relative;flex-shrink:0}@media(prefers-reduced-motion:no-preference){.pulse:after{content:"";position:absolute;inset:-5px;border-radius:50%;border:1px solid var(--accent);animation:pulse 2s ease-out infinite}@keyframes pulse{0%{transform:scale(.4);opacity:1}to{transform:scale(1.4);opacity:0}}}.mock-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.mock{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:28px 24px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow)}.mock .tag{font-family:Spline Sans Mono,monospace;font-size:12px;color:var(--accent);letter-spacing:.05em}.mock h3{font-size:20px;font-weight:600;letter-spacing:-.015em}.mock p{font-size:14.5px;color:var(--ink-2);flex-grow:1}.mock .status{font-family:Spline Sans Mono,monospace;font-size:12px;color:var(--ink-2);border-top:1px solid var(--line);padding-top:14px}@media(max-width:760px){.mock-grid{grid-template-columns:1fr}}.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--ink);border-radius:999px;padding:11px 22px;font-size:14.5px;font-weight:600;color:var(--ink);background:transparent;cursor:pointer;transition:background .2s,color .2s;font-family:inherit}.btn:hover{background:var(--ink);color:var(--bg)}.btn-row{margin-top:30px;display:flex;gap:14px;align-items:center;flex-wrap:wrap}.btn-note{font-size:13.5px;color:var(--ink-3)}.writeups{display:flex;flex-direction:column;gap:12px}a.writeup,div.writeup{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:22px 24px;display:flex;justify-content:space-between;align-items:center;gap:18px;color:var(--ink-2);transition:border-color .25s,transform .25s}a.writeup:hover{border-color:var(--accent);transform:translateY(-2px)}div.writeup.soon{border-style:dashed;border-color:var(--line-strong);background:transparent}.writeup .t{font-weight:600;color:var(--ink);font-size:16px}.writeup .d{font-size:14px;margin-top:2px}.writeup .soon-tag,.writeup .meta{font-family:Spline Sans Mono,monospace;font-size:12px;color:var(--ink-3);white-space:nowrap}.article{max-width:720px;margin:0 auto;padding:56px 24px 90px}.article .back{font-family:Spline Sans Mono,monospace;font-size:13px;color:var(--accent)}.article h1{font-size:clamp(32px,4.6vw,46px);font-weight:600;letter-spacing:-.03em;line-height:1.12;margin:18px 0 10px;text-wrap:balance}.article .meta-row{font-family:Spline Sans Mono,monospace;font-size:12.5px;color:var(--ink-3);margin-bottom:40px}.prose{color:var(--ink-2);font-size:16.5px}.prose h2{color:var(--ink);font-size:24px;font-weight:600;letter-spacing:-.02em;margin:44px 0 14px}.prose h3{color:var(--ink);font-size:18.5px;font-weight:600;margin:32px 0 10px}.prose p{margin-bottom:18px}.prose strong{color:var(--ink);font-weight:600}.prose a{color:var(--accent);border-bottom:1px solid color-mix(in srgb,var(--accent) 40%,transparent)}.prose ul,.prose ol{margin:0 0 18px 22px}.prose li{margin-bottom:8px}.prose blockquote{border-left:2px solid var(--accent);padding:4px 0 4px 20px;margin:24px 0;color:var(--ink);font-style:italic}.prose code{font-family:Spline Sans Mono,monospace;font-size:.86em;background:var(--accent-soft);border-radius:6px;padding:2px 6px}.prose pre{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px 20px;overflow-x:auto;margin:0 0 22px}.prose pre code{background:none;padding:0;font-size:13.5px;line-height:1.7}.prose hr{border:none;border-top:1px solid var(--line);margin:36px 0}.modal-overlay{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:24px;background:color-mix(in srgb,var(--ink) 24%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.modal{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--line-strong);border-radius:18px;padding:34px 32px 30px;box-shadow:var(--shadow);position:relative}@media(prefers-reduced-motion:no-preference){.modal{animation:modalIn .3s cubic-bezier(.2,.9,.3,1)}@keyframes modalIn{0%{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}}.modal .m-tag{font-family:Spline Sans Mono,monospace;font-size:12px;color:var(--accent);letter-spacing:.05em}.modal h3{font-size:22px;font-weight:600;letter-spacing:-.02em;margin:8px 0 6px}.modal .m-sub{font-size:14.5px;color:var(--ink-2);margin-bottom:22px}.modal input[type=email]{width:100%;border:1px solid var(--line-strong);border-radius:12px;background:var(--bg);color:var(--ink);font:inherit;font-size:15px;padding:13px 16px;margin-bottom:14px;transition:border-color .2s}.modal input[type=email]::placeholder{color:var(--ink-3)}.modal input[type=email]:focus{outline:none;border-color:var(--accent)}.modal .btn{width:100%;justify-content:center}.modal .btn[disabled]{opacity:.55;cursor:default}.modal .btn[disabled]:hover{background:transparent;color:var(--ink)}.m-close{position:absolute;top:14px;right:14px;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--ink-2);cursor:pointer;font-size:15px;line-height:1;display:grid;place-items:center;transition:color .2s,border-color .2s}.m-close:hover{color:var(--ink);border-color:var(--ink-3)}.m-note{font-family:Spline Sans Mono,monospace;font-size:11.5px;color:var(--ink-3);margin-top:14px;text-align:center}.m-done{text-align:center;padding:8px 0 4px}.m-done .m-ico{font-size:30px;line-height:1;margin-bottom:12px;color:var(--accent)}.m-error{color:#b4453a;font-size:13.5px;margin:-6px 0 12px}[data-theme=dark] .m-error{color:#e08c82}footer.site-footer{border-top:1px solid var(--line);padding:68px 0 56px;margin-top:40px}.foot-grid{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;align-items:flex-end}.foot-grid h2{font-size:clamp(26px,3.6vw,36px);font-weight:600;letter-spacing:-.03em;margin-bottom:12px}.foot-grid .foot-sub{color:var(--ink-2);max-width:46ch}.foot-links{display:flex;gap:24px;font-size:15px;font-weight:500}.foot-links a{border-bottom:1px solid var(--line-strong);padding-bottom:2px;transition:border-color .2s}.foot-links a:hover{border-color:var(--accent)}.colophon{margin-top:44px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:Spline Sans Mono,monospace;font-size:12px;color:var(--ink-3)}.reveal{opacity:1;transform:none}@media(prefers-reduced-motion:no-preference){.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}.reveal.in{opacity:1;transform:none}}