@font-face{font-family:Inter;src:url('/assets/fonts/InterVariable.woff2') format('woff2');font-weight:100 900;font-display:swap}
:root{--font:Inter,Arial,sans-serif;--ink:#20272c;--muted:#59636b;--accent:#334b5b;--line:#dce1e5;--width:1200px;font-family:var(--font);background:#fafbfc}
body{background:linear-gradient(#fff 0 1100px,#fafbfc 1800px);color:var(--ink)}
.site-header{max-width:none;background:#101315;padding:18px max(28px,calc((100vw - 1200px)/2));border-bottom:1px solid #343a40;gap:24px}
.brand-lockup{display:flex;align-items:center;gap:14px;flex-shrink:0;text-decoration:none}
.brand-emblem{display:block;width:44px;height:44px;object-fit:contain}
.brand-mesh{display:block;width:164px;height:auto;object-fit:contain}
.site-header nav{align-items:center;gap:26px;font-size:13px}
.site-header nav a{color:#d6dce1;min-height:44px;display:inline-flex;align-items:center;gap:10px;padding:8px 0}
.site-header .pdf-link{border:1px solid #626b75;padding:10px 18px;border-radius:999px;color:#f0f3f5}
.landing,.research-hero,.reader-layout,.site-footer{width:calc(100% - 64px)}
.hero{padding:72px 0 64px}.hero-grid{gap:72px}.hero h1{font-size:clamp(36px,4.6vw,60px);line-height:1.08;letter-spacing:-.045em}.hero .lead{font-size:17px;line-height:1.8}
.publication{border-top-color:#56616b;padding-top:24px}.publication .brand-seal{width:78px}.publication h2{font-size:26px}
.research-hero{padding:64px 0 42px}.research-hero h1{font-size:clamp(36px,4.5vw,60px);line-height:1.1;letter-spacing:-.04em;max-width:850px;margin:20px 0}.research-hero .lead{font-size:18px;line-height:1.75;max-width:760px}
.metadata{gap:20px 40px;margin:30px 0}.metadata dt{font-size:12px}.metadata dd{font-size:14px}.actions{gap:24px;margin-top:30px}.button{border-radius:6px;min-height:48px;background:#242c32;gap:28px}
.notice{background:#f0f3f5;border-left:2px solid #74828e;padding:12px 20px;max-width:930px;margin-top:36px}.notice p{font-size:14px;line-height:1.7}.source-note{font-size:13px;max-width:900px}
.reader-layout{grid-template-columns:230px minmax(0,1fr);gap:64px;padding-top:40px}.contents{top:24px;padding-right:20px;max-height:calc(100vh - 48px)}.contents summary{min-height:44px}.contents nav>a,.contents nav details a{font-size:13px;line-height:1.55;padding:8px 9px;border-left:2px solid transparent}.contents nav a[aria-current]{border-left-color:#445c6e;color:#142a3a;background:#eaf0f4}.contents nav details summary{font-size:13px;padding:10px 9px;min-height:40px}
.paper{max-width:810px}.paper section{margin-bottom:72px;scroll-margin-top:28px}.paper h2{font-size:30px;line-height:1.25;padding-top:28px;letter-spacing:-.025em}.paper h3{font-size:21px;margin:38px 0 18px;line-height:1.4}.paper p,.paper li{font-size:17px;line-height:1.85;max-width:69ch}.paper p{margin:0 0 22px}.paper li{margin:10px 0}.paper ul,.paper ol{padding-left:25px}.section-jump{font-size:12px;padding:10px 0;min-height:40px}.paper code{font-size:.82em;word-break:break-word;background:#edf0f3;padding:2px 4px;border-radius:3px}
.founder-principle{margin:34px 0;padding:20px 0 20px 24px;border-left:2px solid #647482}.paper .founder-principle p{font-size:24px;line-height:1.5;letter-spacing:-.02em;margin:0 0 12px;font-weight:500}.founder-principle cite{font-size:13px;font-style:normal;color:var(--muted)}
.founder-note,.reading-note{font-size:14px!important;line-height:1.75!important;padding:18px 22px;background:#edf1f4;border-radius:6px;color:#46545f;max-width:76ch;margin:28px 0}.paper .reading-note p{font-size:14px;line-height:1.75}
.paper figure{margin:34px 0 42px;border:1px solid #dce1e5;background:#fff;padding:16px;border-radius:6px}.paper figure img{width:100%;height:auto;display:block}.paper figcaption{font-size:13px;line-height:1.7;color:#56626c;margin-top:16px}.paper .table-wrap{max-width:100%;overflow-x:auto;border:1px solid #dce1e5;border-radius:4px;margin:28px 0;background:white}.paper table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.7}.paper th,.paper td{padding:14px;text-align:left;vertical-align:top;border-bottom:1px solid #dce1e5;min-width:140px}.paper th{background:#edf1f4;font-weight:600}.paper td p,.paper th p{font-size:13px;line-height:1.7;margin:0}.paper caption{font-size:13px;font-weight:500;text-align:left;padding:14px}.paper [tabindex='-1']:focus{outline:none}.paper #references p{font-size:13px;line-height:1.7}.paper #references a{overflow-wrap:anywhere}.paper .unlinked-ref{overflow-wrap:anywhere}.paper #references .reading-note{font-size:13px!important}
.site-footer{padding:32px 0 44px;font-size:13px;margin-top:40px}.site-footer>a{min-height:44px}.site-footer p{line-height:1.7}
:is(a,button,summary,select,[tabindex='0']):focus-visible{outline:2px solid #607f96;outline-offset:4px}
@media(max-width:980px){.reader-layout{grid-template-columns:1fr;gap:32px}.contents{position:sticky;top:0;z-index:4;background:#fafbfc;border:1px solid #d6dfe5;border-radius:6px;max-height:65vh;padding:0 16px;box-shadow:0 6px 18px #1a2b3810}.contents>summary{padding:15px 0;min-height:50px}.contents nav{padding-bottom:16px}.contents:not([open]) nav{display:none}.paper{max-width:760px;margin:auto;width:100%}.hero-grid{gap:36px}.research-feature,.scope,.reading{gap:36px}}
@media(max-width:640px){.site-header{padding:14px 20px;gap:16px}.brand-emblem{width:36px;height:36px}.brand-mesh{width:132px}.brand-lockup{gap:10px}.site-header nav{gap:14px}.site-header nav a{font-size:12px}.site-header .pdf-link{padding:8px 12px}.landing,.research-hero,.reader-layout,.site-footer{width:calc(100% - 40px)}.research-hero{padding:40px 0 24px}.research-hero h1{font-size:38px}.research-hero .lead{font-size:16px;line-height:1.75}.metadata{display:grid;grid-template-columns:1fr 1fr;gap:18px 12px;margin:24px 0}.metadata dd{font-size:13px}.notice{padding:12px 16px;margin-top:28px}.notice p{font-size:13px}.actions{gap:18px}.reader-layout{padding-top:22px;gap:30px}.paper h2{font-size:26px;padding-top:24px}.paper h3{font-size:20px}.paper p,.paper li{font-size:16px;line-height:1.85}.paper p{margin-bottom:20px}.paper section{margin-bottom:50px;scroll-margin-top:78px}.paper h3{scroll-margin-top:78px}.paper figure{padding:8px}.paper figcaption{font-size:12px}.paper .founder-principle p{font-size:21px}.founder-note,.reading-note{font-size:13px!important;padding:16px}.site-footer{gap:16px;flex-wrap:wrap}.hero{padding:42px 0}.hero-grid,.research-feature,.scope,.reading{grid-template-columns:1fr;gap:24px}.hero .lead{font-size:16px}.publication .brand-seal{width:64px}.research-feature,.scope,.reading{padding:36px 0}.featured-figure{padding:0;border-left:0}.source-note{font-size:12px}.paper code{font-size:.78em}}
@media(max-width:380px){.brand-emblem{width:32px;height:32px}.brand-mesh{width:104px}.site-header nav{gap:10px}.site-header{gap:12px}.research-hero h1{font-size:34px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
@media print{.site-header,.contents,.actions,.section-jump,.site-footer{display:none}.research-hero,.reader-layout{display:block;width:100%;max-width:none}.paper{max-width:none}.paper p,.paper li{font-size:11pt;line-height:1.5}.paper section{break-before:page}.paper h2,.paper h3{break-after:avoid}.paper figure{break-inside:avoid}}
/* Keep the brand bar full-width and its navigation on one row. */
.site-header{margin:0;width:100%;box-sizing:border-box;align-items:center}
@media(max-width:640px){.site-header nav{flex-direction:row;flex-wrap:nowrap;align-items:center}.site-header nav a{white-space:nowrap}}
@media(max-width:380px){.site-header nav>a:first-child{display:none}}
/* Shared landing-page navigation and optically balanced brand assets. */
.site-header{position:relative;z-index:10;padding-top:14px;padding-bottom:14px}
.brand-lockup{gap:12px}.brand-emblem{width:88px;height:88px}.brand-mesh{width:96px;height:auto;overflow:hidden;flex-shrink:0}
.site-header .landing-navigation{display:flex;align-items:center;gap:4px;padding:4px;border:1px solid #ffffff1c;border-radius:999px;background:#ffffff03}
.site-header .landing-navigation a{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 14px;border-radius:999px;white-space:nowrap;color:#b7bcc2;font-size:13px;text-decoration:none;box-sizing:border-box}
.site-header .landing-navigation a:hover{background:#ffffff08;color:#fff}
.site-header .landing-navigation .landing-nav-x{width:44px;padding:0;flex-shrink:0}
.site-header .landing-navigation .landing-nav-app{padding:0 20px;margin-left:4px;background:#e5e9ee;color:#101315;border:1px solid #f4f6f8;box-shadow:0 1px 0 #fff8 inset}
.site-header .landing-navigation .landing-nav-app:hover{background:#fff}
.landing-menu{display:none}
.site-header :is(a,button):focus-visible{outline:2px solid #e5eaf0;outline-offset:4px}
@media(max-width:700px){
 .site-header{padding:12px 20px;min-height:84px;align-items:center}
 .brand-emblem{width:60px;height:60px}.brand-mesh{width:80px}.brand-lockup{gap:10px}
 .landing-menu{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 14px;background:#15181b;color:#e5e8eb;border:1px solid #ffffff30;border-radius:5px;font:12px Inter,Arial,sans-serif;cursor:pointer}
 .site-header .landing-navigation{display:none;position:absolute;top:calc(100% - 1px);left:20px;right:20px;padding:12px 16px;background:#111416;border:1px solid #ffffff30;border-radius:6px;box-shadow:0 16px 32px #0007}
 .site-header .landing-navigation[data-open]{display:grid;grid-template-columns:1fr 1fr;gap:8px}
 .site-header .landing-navigation a{padding:10px;min-width:0}
 .site-header .landing-navigation .landing-nav-x{width:auto}
 .site-header .landing-navigation .landing-nav-app{margin-left:0;padding:10px}
}
@media print{.landing-menu{display:none}}
/* Public "How it works" and "Donate" sections (same .scope layout as "Development scope"). */
.home-how .scope-copy .label,.home-support .label{margin:0}
.home-note{margin-top:24px!important;padding-top:20px;border-top:1px solid var(--line);font-size:.875rem;color:var(--muted)!important}
.home-costs{display:flex;flex-direction:column;gap:4px;margin:20px 0 0!important;font-size:.9375rem}
.home-costs strong{color:var(--ink);font-variant-numeric:tabular-nums}
.home-costs time{font-size:.8125rem;color:var(--muted)}
.home-contribute>summary{display:inline-flex;align-items:center;min-height:48px;padding:0 22px;border-radius:6px;background:#242c32;color:#fff;font-size:.875rem;font-weight:600;letter-spacing:0;cursor:pointer;list-style:none}
.home-contribute>summary::-webkit-details-marker{display:none}
.home-contribute>summary:hover{background:var(--accent)}
.home-contribute[open]>summary{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.home-contribute-body{display:grid;gap:10px;margin-top:22px;max-width:560px}
.home-contribute-body p{margin:0}
.home-contribute-body .label{margin-top:14px}
.home-address{display:block;padding:12px 14px;border-radius:6px;background:#edf1f4;color:var(--ink);font-size:.9375rem;line-height:1.5;overflow-wrap:anywhere;user-select:all}
.home-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px}
.home-actions .text-link{margin-top:0}
.home-copy,.home-qr-switch{min-height:40px;padding:0 16px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);font:inherit;font-size:.875rem;font-weight:600;cursor:pointer}
.home-copy:hover,.home-qr-switch:hover{border-color:var(--accent)}
.home-feedback{min-height:1.5em;font-size:.8125rem;color:var(--muted)}
.home-qr{margin-top:8px}
.home-qr>summary{font-size:.875rem;color:var(--accent);font-weight:600;letter-spacing:0;padding:8px 0}
.home-qr figure{display:grid;justify-items:start;gap:8px;margin:12px 0}
.home-qr img{width:196px;height:auto;border-radius:4px;border:1px solid var(--line)}
.home-qr img[hidden]{display:none}
.home-qr figcaption{font-size:.8125rem;color:var(--muted)}
.home-disclosure{font-size:.8125rem;line-height:1.6;color:var(--muted)!important}
/* Whitepaper: the translucent header sits over the light paper, so its links need a lighter colour for 4.5:1.
   Inside the shared header's layer, where its !important link colour is declared. */
@layer product-header{body:not(.registry-page) :is(.app-header,.site-header) .landing-navigation a:not(.landing-nav-app){color:#e6e9ec!important}}
/* Whitepaper on phones: the shared header turns transparent at <=900px, which leaves the white wordmark and the menu
   icon unreadable on the light paper. Give it the header's dark surface there (same layer, higher specificity). */
@layer product-header{@media(max-width:900px){#top:not(.registry-page) .site-header{background:#0e1013!important}}}