:root {
  --paper: #f6f4ee;
  --ink: #282828;
  --muted: var(--ink);
  --rule: rgba(40, 40, 40, .17);
  --sans: 'Manrope', Arial, sans-serif;
  --serif: 'Newsreader', Georgia, serif;
  --mono: 'IBM Plex Mono', monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 60px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
::selection { background: var(--ink); color: var(--paper); }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 1px solid var(--ink); outline-offset: 6px; }
img { max-width: 100%; }
p, h1, h2, h3 { margin-top: 0; }
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 100; padding: 12px; background: var(--paper); color: var(--ink); border: 1px solid var(--ink); }
.skip-link:focus { top: 12px; }
.site-header { position: relative; max-width: 1320px; padding: 25px 54px; margin: auto; display: flex; align-items: center; justify-content: space-between; }
.wordmark { display: inline-flex; align-items: center; gap: 12px; font-weight: 600; letter-spacing: .065em; font-size: 14px; line-height: 1.27; }
.wordmark sup { font-size: 9px; vertical-align: top; letter-spacing: 0; }
.wordmark img { object-fit: contain; }
.site-header nav { display: none; position: absolute; z-index: 30; top: calc(100% - 8px); right: 54px; width: 260px; padding: 16px 22px; background: var(--paper); border: 1px solid var(--rule); flex-direction: column; align-items: stretch; gap: 0; font-size: 14px; font-weight: 400; }
.site-header nav.is-open { display: flex; }
.site-header nav > a { display: flex; align-items: center; min-height: 44px; padding: 10px 0; }
.site-header nav > a:hover, .text-button:hover, .nav-deck:hover { text-decoration: underline; text-underline-offset: 5px; }
.nav-deck { min-height: 44px; padding: 12px 0 6px; margin-top: 8px; border-top: 1px solid var(--rule); text-align: left; }
.nav-deck span { margin-left: 12px; }
.menu-toggle { display: flex; justify-content: center; align-items: center; width: 44px; height: 44px; padding: 12px; }
.hamburger { position: relative; display: block; width: 20px; height: 16px; }
.hamburger > span { position: absolute; left: 0; width: 20px; height: 1.5px; background: var(--ink); }
.hamburger > span:nth-child(1) { top: 0; }
.hamburger > span:nth-child(2) { top: 7px; }
.hamburger > span:nth-child(3) { top: 14px; }
.menu-toggle[aria-expanded="true"] .hamburger > span:nth-child(1) { top: 7px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] .hamburger > span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .hamburger > span:nth-child(3) { top: 7px; transform: rotate(-45deg); }
main, .site-footer { max-width: 1320px; margin: auto; }
.hero { padding: 34px 54px 0; }
.hero-topline { display: flex; justify-content: space-between; align-items: center; }
.eyebrow, .section-number, .hero-footer, .figure-index, .plate-topline, .layer-tag, .runtime-label, .plate-caption, .back-top { font: 10px/1.6 var(--mono); letter-spacing: .04em; }
.status-dot, .hero-note { display: none; }
.hero-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 35px; align-items: center; padding: 48px 0 58px; }
h1 { font: 400 clamp(60px, 6vw, 83px)/1.025 var(--serif); letter-spacing: -.042em; margin-bottom: 27px; }
h1 em { font-weight: 400; }
.hero-subtitle { font: 400 17px/1.6 var(--sans); max-width: 380px; margin-bottom: 26px; }
.hero-actions { display: flex; align-items: center; gap: 26px; }
.button, .text-button { display: inline-flex; gap: 18px; align-items: center; padding: 9px 0; font-size: 12px; font-weight: 400; border-bottom: 1px solid var(--ink); background: transparent; color: var(--ink); }
.button:hover, .text-button:hover { text-decoration: underline; text-underline-offset: 4px; }
.text-button span { margin-left: 4px; }
.landscape-figure { margin: 25px 0 0; align-self: stretch; display: flex; flex-direction: column; justify-content: center; }
.figure-index { display: flex; justify-content: space-between; font-size: 9px; padding: 0 16px; }
.landscape { width: 100%; height: auto; margin: -12px 0 -35px; }
.equation { font: 400 20px/1.3 var(--serif); text-align: center; margin-bottom: 11px; }
.equation sub { font-size: .6em; }
.landscape-figure figcaption { text-align: center; font: 9px/1.5 var(--mono); letter-spacing: .015em; }
.hero-footer { display: none; }
.editorial-section, .application-section { display: grid; grid-template-columns: 1fr 3fr; gap: 42px; padding: 64px 54px; }
.section-margin { display: flex; flex-direction: column; gap: 23px; }
.margin-note, .principle-callout, .application-mark { display: none; }
h2 { font: 400 clamp(33px, 3.3vw, 44px)/1.1 var(--serif); letter-spacing: -.024em; margin-bottom: 26px; }
h2 em { font-weight: 400; }
.prose { font: 400 20px/1.65 var(--serif); max-width: 710px; }
.prose p { margin-bottom: 25px; }
.prose strong { font-weight: 500; }
.architecture-section { background: var(--paper); padding: 64px 54px; }
.section-heading { margin-bottom: 32px; }
.section-heading h2 { margin: 16px 0 12px; }
.section-heading > p { font-size: 14px; line-height: 1.7; }
.architecture-plate { border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: 26px 0; }
.plate-topline { display: flex; justify-content: space-between; font-size: 9px; margin-bottom: 26px; }
.architecture-row { display: flex; gap: 22px; align-items: center; border: 1px solid var(--rule); padding: 21px 24px; background: transparent; }
.layer-number { font: 11px/1 var(--mono); align-self: flex-start; margin-top: 5px; }
.architecture-row h3 { font: 500 15px/1.4 var(--sans); margin-bottom: 7px; }
.architecture-row p { font: 11px/1.5 var(--mono); margin: 0; }
.layer-tag, .runtime-label { margin-left: auto; white-space: nowrap; font-size: 9px; }
.bullet { margin: 0 9px; }
.flow-arrow { text-align: center; line-height: 27px; }
.runtime { border-color: var(--ink); }
.runtime h3 { font-weight: 600; }
.hardware-branch { display: grid; grid-template-columns: 1fr 1fr; text-align: center; line-height: 31px; }
.hardware-split { display: flex; gap: 24px; }
.hardware-item { flex: 1; border: 1px solid var(--rule); padding: 21px 25px; }
.hardware-item .eyebrow { font-size: 9px; }
.hardware-item h3 { font: 400 22px/1.3 var(--serif); margin: 9px 0 0; }
.future { border-style: dashed; }
.plate-caption { font-size: 9px; letter-spacing: 0; margin: 22px 0 0; max-width: 820px; }
.architecture-principles { display: block; max-width: 710px; margin: 38px 0 0 auto; }
.architecture-principles article { margin-top: 29px; }
.mini-index { display: none; }
.architecture-principles h3 { font: 500 15px/1.5 var(--sans); margin: 0 0 9px; }
.architecture-principles p { font: 19px/1.65 var(--serif); margin-bottom: 0; }
.application-section { padding-top: 64px; padding-bottom: 64px; }
.application-section h2 { margin-top: 16px; }
.application-point { padding: 20px 0 0; display: flex; gap: 15px; }
.point-symbol { display: none; }
.application-point h3 { font: 500 15px/1.4 var(--sans); margin-bottom: 10px; }
.application-point p { font: 19px/1.65 var(--serif); max-width: 710px; }
.faq-section { padding-top: 64px; padding-bottom: 64px; }
.faq { border-top: 1px solid var(--rule); }
.faq:last-child { border-bottom: 1px solid var(--rule); }
.faq summary { list-style: none; display: flex; justify-content: space-between; gap: 25px; cursor: pointer; font: 500 15px/1.65 var(--sans); padding: 23px 0; }
.faq summary::-webkit-details-marker, .review-notes summary::-webkit-details-marker { display: none; }
.faq summary span { font: 22px/1.2 var(--serif); flex-shrink: 0; }
.faq[open] summary span { transform: rotate(45deg); }
.faq p { font: 19px/1.7 var(--serif); max-width: 700px; padding-right: 30px; margin-bottom: 25px; }
.research-section { background: var(--paper); color: var(--ink); padding: 64px 54px; border-top: 1px solid var(--rule); }
.research-section h2 { font-size: 54px; margin: 25px 0 34px; }
.research-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; }
.research-columns article { display: flex; flex-direction: column; }
.research-columns .eyebrow { font-size: 10px; }
.research-columns p { font: 20px/1.6 var(--serif); margin: 17px 0 24px; max-width: 460px; }
.research-link { text-align: left; border-bottom: 1px solid var(--rule); padding: 0 0 12px; font: 12px/1.65 var(--sans); display: flex; justify-content: space-between; gap: 20px; margin-top: auto; }
.research-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.research-link span { font-size: 18px; }
.review-notes { padding: 28px 54px; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.review-notes summary { display: flex; justify-content: space-between; cursor: pointer; list-style: none; font: 12px/1.7 var(--sans); }
.review-notes > p { font: 9px/1.7 var(--mono); letter-spacing: .02em; margin: 20px 0 0; max-width: 900px; }
.source-notes { white-space: pre-wrap; overflow-wrap: anywhere; font: 14px/1.8 var(--serif); padding: 24px 0 10px; max-width: 900px; }
.site-footer { padding: 32px 54px; }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.site-footer .wordmark { font-size: 10px; gap: 9px; }
.footer-row > span { font: italic 17px/1.4 var(--serif); }
.footer-legal { margin-top: 24px; }
.footer-legal p { margin: 0; font: 11px/1.7 var(--sans); }
.footer-legal .copyright { margin-top: 8px; font: 10px/1.6 var(--mono); }
.back-top { font-size: 9px; }
dialog { padding: 45px; border: 1px solid var(--rule); background: var(--paper); color: var(--ink); max-width: 540px; width: calc(100% - 36px); }
dialog::backdrop { background: rgba(40, 40, 40, .35); }
dialog h2 { margin: 22px 0; font-size: 40px; }
dialog p { font: 18px/1.7 var(--serif); }
dialog .contact-link { text-decoration: underline; text-underline-offset: 3px; overflow-wrap: anywhere; }
.dialog-close { position: absolute; right: 14px; top: 9px; font-size: 27px; }
.dialog-anchor { margin-top: 10px; }
[hidden] { display: none !important; }
.technical-brief-section { border-top: 1px solid var(--rule); }
.brief-access-note, dialog .brief-access-note { font: 12px/1.75 var(--sans); max-width: 710px; margin: 18px 0 0; }
.brief-access-note:empty, .brief-form-message:empty { display: none; }
.brief-access-bar { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-bottom: 20px; margin-bottom: 30px; border-bottom: 1px solid var(--rule); }
.private-brief { max-width: 710px; overflow-wrap: anywhere; }
.private-brief .brief-brand, .private-brief .brief-classification { font: 11px/1.7 var(--mono); letter-spacing: .03em; }
.private-brief h3 { font: 400 32px/1.2 var(--serif); letter-spacing: -.02em; margin: 22px 0; }
.private-brief h4 { font: 400 25px/1.35 var(--serif); margin: 32px 0 16px; }
.private-brief p, .private-brief li { font: 400 20px/1.75 var(--serif); white-space: pre-wrap; }
.private-brief p { margin-bottom: 22px; }
.private-brief ul, .private-brief ol { padding-left: 26px; margin: 0 0 24px; }
.private-brief li { padding-left: 5px; margin-bottom: 12px; }
.private-brief .brief-contact { border-top: 1px solid var(--rule); padding-top: 24px; margin-top: 32px; }
#technical-brief-form { margin: 26px 0; padding: 22px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
#technical-brief-form label { display: block; font: 500 13px/1.6 var(--sans); margin-bottom: 10px; }
#technical-brief-code { display: block; width: 100%; min-height: 48px; border: 1px solid var(--rule); border-radius: 0; background: transparent; color: var(--ink); padding: 12px 14px; font: 18px/1.4 var(--mono); letter-spacing: .12em; }
#technical-brief-code:focus-visible { outline: 1px solid var(--ink); outline-offset: 3px; }
#technical-brief-code[aria-invalid="true"] { border-color: var(--ink); border-width: 2px; }
#technical-brief-submit { min-height: 44px; margin-top: 18px; }
#technical-brief-submit:disabled { cursor: wait; opacity: .65; }
dialog .brief-form-message { font: 13px/1.7 var(--sans); margin: 15px 0 0; }
#technical-brief-error { border-left: 2px solid var(--ink); padding-left: 12px; }
@media (max-width: 1100px) {
  .site-header { padding: 24px 36px; }
  .site-header nav { right: 36px; }
  .hero { padding: 30px 36px 0; }
  .hero-grid { gap: 14px; padding: 44px 0; }
  h1 { font-size: 67px; }
  .editorial-section, .application-section { padding: 60px 36px; gap: 34px; }
  .architecture-section, .research-section { padding: 60px 36px; }
  .architecture-row { gap: 16px; padding: 20px; }
  .layer-tag, .runtime-label { display: none; }
  .review-notes, .site-footer { padding: 28px 36px; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 28px; }
  .site-header { padding: 21px 24px; flex-wrap: wrap; }
  .wordmark { font-size: 11px; gap: 9px; }
  .site-header .wordmark img { width: 44px; height: 32px; }
  .site-header nav { right: 24px; width: min(260px, calc(100% - 48px)); }
  .hero { padding: 25px 24px 0; }
  .hero-grid { grid-template-columns: 1fr; padding: 32px 0 22px; }
  h1 { font-size: clamp(50px, 12vw, 78px); line-height: 1.045; margin-bottom: 23px; }
  .hero-subtitle { font-size: 15px; max-width: 330px; }
  .hero-actions { gap: 24px; }
  .button, .text-button { font-size: 11px; gap: 12px; padding: 9px 0; }
  .landscape-figure { margin: 32px auto 0; max-width: 420px; width: 100%; }
  .landscape { margin: -17px 0 -37px; }
  .figure-index { padding: 0; font-size: 8px; }
  .equation { font-size: 19px; }
  .editorial-section, .application-section { display: block; padding: 48px 24px; }
  .section-margin { margin-bottom: 22px; }
  h2 { font-size: 36px; margin-bottom: 24px; }
  .prose { font-size: 19px; line-height: 1.65; }
  .architecture-section { padding: 48px 24px; }
  .section-heading > p { font-size: 13px; }
  .architecture-plate { padding: 20px 0; }
  .plate-topline { gap: 15px; font-size: 8px; margin-bottom: 20px; }
  .plate-topline span:last-child { display: none; }
  .architecture-row { padding: 18px 12px; gap: 12px; }
  .architecture-row h3 { font-size: 13px; }
  .architecture-row p { font-size: 9px; line-height: 1.65; }
  .layer-number { font-size: 9px; }
  .bullet { margin: 0 3px; }
  .hardware-split { gap: 10px; }
  .hardware-item { padding: 17px 10px; }
  .hardware-item .eyebrow { font-size: 8px; }
  .hardware-item h3 { font-size: 18px; }
  .plate-caption { font-size: 8px; line-height: 1.75; }
  .architecture-principles { margin-top: 30px; }
  .architecture-principles h3 { margin-top: 0; }
  .architecture-principles p, .application-point p { font-size: 19px; }
  .application-section h2 { font-size: 35px; }
  .faq summary { font-size: 13px; padding: 22px 0; gap: 18px; }
  .faq p { font-size: 19px; padding-right: 8px; }
  .research-section { padding: 48px 24px; }
  .research-section h2 { font-size: 46px; margin: 24px 0 30px; }
  .research-columns { grid-template-columns: 1fr; gap: 36px; }
  .research-columns p { font-size: 20px; }
  .research-columns .eyebrow { font-size: 9px; }
  .research-link { font-size: 11px; }
  .review-notes { padding: 25px 24px; }
  .review-notes summary { font-size: 11px; gap: 15px; }
  .review-notes > p { font-size: 8px; }
  .site-footer { padding: 25px 24px; gap: 20px; }
  .footer-row > span { display: none; }
  dialog { padding: 36px 25px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }