/* 01. Design tokens */
:root {
  --carbon: #24303A; --atmosphere: #4E8090; --rust: #A7604C; --indigo: #666486; --gold: #B08A4F;
  --moss: #748071; --steel: #697984; --pale-atmosphere: #DDE9ED; --rust-wash: #EFE0DB;
  --indigo-wash: #E6E4EC; --moss-wash: #E7EAE3; --gold-wash: #F0E6D5; --paper: #F8F5ED;
  --cool-paper: #EFF2F3; --graphite: #353D42; --muted: #737C81; --white: #FFFFFF;
  --font-editorial: Georgia, Cambria, "Times New Roman", Times, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --fs-xs: .72rem; --fs-sm: .88rem; --fs-body: 1rem; --fs-h3: clamp(1.25rem, 2vw, 1.55rem);
  --fs-h2: clamp(2rem, 4.3vw, 3.8rem); --fs-h1: clamp(2.65rem, 5.9vw, 5.7rem);
  --space-1: .5rem; --space-2: 1rem; --space-3: 1.5rem; --space-4: 2rem; --space-5: 3rem; --space-6: 5rem; --space-7: 8rem;
  --container: 1200px; --border: 1px solid rgba(36,48,58,.19); --radius-sm: 5px; --radius: 10px;
  --shadow: 0 15px 35px rgba(36,48,58,.08); --transition: 240ms ease;
}

/* 02. Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 90px; }
body, h1, h2, h3, p { margin: 0; }
ul { margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; }
button, input { font: inherit; }
a { color: inherit; }

/* 03. Base */
body { background: var(--paper); color: var(--graphite); font-family: var(--font-sans); line-height: 1.65; overflow-x: hidden; }
::selection { background: var(--gold-wash); color: var(--carbon); }
[hidden] { display: none !important; }
.container { width: min(calc(100% - 2.5rem), var(--container)); margin-inline: auto; }
.section { padding-block: var(--space-7); }

/* 04. Accessibility */
.skip-link { position: fixed; z-index: 1000; left: 1rem; top: 1rem; transform: translateY(-180%); background: var(--white); color: var(--carbon); padding: .75rem 1rem; border: 2px solid var(--gold); }
.skip-link:focus { transform: none; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }
.copy-fallback { position: fixed; left: -9999px; }

/* 05. Typography */
h1, h2, h3 { color: var(--carbon); font-family: var(--font-editorial); font-weight: 400; line-height: 1.08; }
h1 { font-size: var(--fs-h1); letter-spacing: -.045em; }
h1 em { color: var(--atmosphere); font-style: italic; }
h2 { max-width: 850px; margin-top: .55rem; font-size: var(--fs-h2); letter-spacing: -.035em; }
h3 { font-size: var(--fs-h3); }
.eyebrow, .micro-label, .category, .plate-id, .case b, .case span, .method-item b, .orcid, .note-tags, .research-note summary > span { font-family: var(--font-mono); font-size: var(--fs-xs); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow { color: var(--gold); }
.section-intro { max-width: 760px; margin-top: var(--space-3); font-size: 1.08rem; }

/* 06. Layout */
.button-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: var(--space-4); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .65rem 1.15rem; border: 1px solid var(--carbon); border-radius: var(--radius-sm); font-size: var(--fs-sm); font-weight: 700; text-decoration: none; transition: transform var(--transition), background var(--transition); }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--carbon); color: var(--white); }
.button.secondary { background: transparent; }

/* 07. Header */
.site-header { position: sticky; z-index: 50; top: 0; background: rgba(248,245,237,.97); border-bottom: var(--border); }
.header-inner { display: flex; min-height: 78px; align-items: center; gap: 1.2rem; }
.brand { flex: 0 1 340px; }
.brand img { width: 330px; }
#site-navigation { display: flex; align-items: center; justify-content: flex-end; gap: clamp(.6rem, 1.25vw, 1.1rem); margin-left: auto; }
#site-navigation a { font-size: .78rem; font-weight: 650; text-decoration: none; white-space: nowrap; }
#site-navigation a:not(.nav-cta):hover { color: var(--rust); }
.nav-cta { padding: .55rem .75rem; background: var(--carbon); color: var(--white); border-radius: var(--radius-sm); }
.menu-toggle { display: none; width: 46px; height: 42px; margin-left: auto; border: var(--border); background: transparent; border-radius: var(--radius-sm); }
.menu-toggle span { display: block; width: 21px; height: 2px; margin: 4px auto; background: var(--carbon); }

/* 08. Hero */
.hero { min-height: calc(100vh - 78px); padding-block: clamp(4rem, 9vw, 8rem); background: linear-gradient(110deg, var(--paper) 0 61%, var(--cool-paper) 61%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 49fr) minmax(0, 51fr); gap: clamp(2.5rem, 5vw, 6rem); align-items: center; }
.hero-copy .lede { max-width: 620px; margin-top: var(--space-4); font-size: 1.12rem; }
.hero-copy .micro-label { margin-top: var(--space-4); color: var(--muted); }

/* 09. Junction Desk */
.junction-desk { display: grid; gap: 1.2rem; position: relative; padding: 1.5rem 0; }
.junction-desk::before { content: "JUNCTION DESK / CONCEPTUAL STUDIES"; position: absolute; right: 0; top: -1rem; font: 600 .65rem var(--font-mono); letter-spacing: .12em; color: var(--steel); }
.junction-desk .junction-plate:nth-child(1) { width: 93%; }
.junction-desk .junction-plate:nth-child(2) { width: 91%; margin-left: auto; }
.junction-desk .junction-plate:nth-child(3) { width: 86%; margin-left: 4%; }
.desk-note { max-width: 530px; margin: .25rem 0 0 auto; padding-top: 1rem; border-top: var(--border); color: var(--muted); font-size: var(--fs-sm); }

/* 10. Junction Plates */
.junction-plate { padding: 1rem; background: var(--white); border: var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.junction-plate.atmosphere { --accent: var(--atmosphere); --wash: var(--pale-atmosphere); }
.junction-plate.electro { --accent: var(--rust); --wash: var(--rust-wash); }
.junction-plate.education { --accent: var(--indigo); --wash: var(--indigo-wash); }
.plate-id { display: block; margin-bottom: .55rem; color: var(--accent); }
.plate-fields { display: grid; grid-template-columns: 1fr 13px 1.1fr; min-height: 112px; }
.plate-fields > div { position: relative; padding: .8rem; background: var(--wash); }
.plate-fields > div:last-child { background: color-mix(in srgb, var(--wash), var(--white) 42%); }
.plate-fields > div:first-child::before { content: ""; position: absolute; left: -5px; top: 50%; width: 9px; height: 9px; border-radius: 50%; background: var(--accent); }
.plate-fields > div:last-child::after { content: ""; position: absolute; right: -5px; top: 50%; width: 9px; height: 9px; background: var(--carbon); }
.plate-fields i { position: relative; }
.plate-fields i::before { content: ""; position: absolute; left: 50%; height: 100%; border-left: 1px solid var(--gold); }
.plate-fields i::after { content: ""; position: absolute; left: 50%; top: 50%; width: 9px; height: 9px; transform: translate(-45%,-50%); border-radius: 50%; background: var(--gold); }
.plate-fields b, .junction-plate > p b { display: block; color: var(--accent); font: 700 .62rem var(--font-mono); letter-spacing: .12em; }
.plate-fields span, .junction-plate > p { font-size: .74rem; line-height: 1.45; }
.junction-plate > p { padding-top: .7rem; }

/* 11. Interface Band */
.interface-band { padding-block: var(--space-6); background: var(--carbon); color: var(--cool-paper); }
.band-lede { max-width: 850px; margin-top: var(--space-2); font-family: var(--font-editorial); font-size: clamp(1.35rem, 2.4vw, 2.05rem); line-height: 1.35; }
.band-points { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: var(--space-5); background: rgba(255,255,255,.17); }
.band-points span { padding: 1.1rem; background: var(--carbon); font: 600 .78rem var(--font-mono); }

/* 12. Research Fields */
.field-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: var(--space-5); border-block: var(--border); }
.field { min-width: 0; padding: 2rem 1.5rem; border-right: var(--border); }
.field:last-child { border-right: 0; }
.field > span { color: var(--accent); font: 700 .75rem var(--font-mono); }
.field h3 { margin: 1.5rem 0 1rem; }
.field p { font-size: .94rem; }
.field-atmosphere { --accent: var(--atmosphere); }.field-earth { --accent: var(--moss); }.field-electro { --accent: var(--rust); }.field-education { --accent: var(--indigo); }
.tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 1.4rem; list-style: none; }
.tags li { padding: .24rem .5rem; background: color-mix(in srgb, var(--accent), white 86%); border-radius: 30px; color: var(--carbon); font-size: .7rem; }

/* 13. Interface Cases */
.cases { background: var(--cool-paper); }
.case { --accent: var(--atmosphere); display: grid; grid-template-columns: 1.2fr 1.5fr 1fr 1fr; gap: 1px; margin-top: var(--space-5); background: rgba(36,48,58,.18); border-top: 4px solid var(--accent); box-shadow: var(--shadow); }
.case-electro { --accent: var(--rust); }.case-education { --accent: var(--indigo); }
.case > div, .case > aside { padding: 1.5rem; background: var(--white); }
.case-label { grid-row: span 2; }
.case-label h3 { margin: 2rem 0 .5rem; }
.case-label h3 i { display: inline-block; width: 5px; height: 1.1em; margin: 0 .45rem; background: var(--gold); vertical-align: middle; }
.case-question { grid-column: span 3; }
.case-question p { max-width: 760px; margin-top: .5rem; font: 1.45rem var(--font-editorial); }
.case b, .case span { color: var(--accent); }
.case p { margin-top: .5rem; font-size: .88rem; }
.case aside { border-left: 4px solid var(--gold); }

/* 14. Interface Method */
.method-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1rem; margin-top: var(--space-5); }
.method-item { display: grid; grid-template-columns: auto 1fr; gap: 1rem; padding: 1.4rem; background: var(--white); border: var(--border); border-radius: var(--radius-sm); }
.method-item:nth-child(1), .method-item:nth-child(4), .method-item:nth-child(7) { grid-column: span 5; }
.method-item:nth-child(2), .method-item:nth-child(3), .method-item:nth-child(5), .method-item:nth-child(6) { grid-column: span 7; }
.method-item:nth-child(3), .method-item:nth-child(6) { margin-left: 8%; }
.method-item > span { color: var(--gold); font: 700 1.2rem var(--font-mono); }
.method-item b { color: var(--steel); }.method-item h3 { margin: .4rem 0 .6rem; }.method-item p { font-size: .9rem; }

/* 15. Interface Checklist */
.checklist { display: grid; grid-template-columns: .75fr 1.25fr; gap: var(--space-5); margin-top: var(--space-7); padding: clamp(1.5rem, 4vw, 3.5rem); background: var(--gold-wash); border-top: 5px solid var(--gold); }
.checklist ul { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem 1.5rem; list-style: none; counter-reset: check; }
.checklist li { position: relative; padding-left: 1.7rem; font-size: .86rem; }
.checklist li::before { content: "□"; position: absolute; left: 0; color: var(--gold); font: 700 1rem var(--font-mono); }

/* 16. Academic References */
.references { background: var(--white); }
.contact-note { margin-top: 2rem; padding: 1rem 1.25rem; border-left: 4px solid var(--gold); background: var(--gold-wash); font-size: .88rem; }
.profile-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; margin-top: var(--space-5); align-items: start; }
.profile { --accent: var(--atmosphere); padding: 1.5rem; border: var(--border); border-top: 5px solid var(--accent); border-radius: var(--radius-sm); background: var(--paper); }
.profile.electro { --accent: var(--rust); }.profile.education { --accent: var(--indigo); }
.profile.alternate { margin-top: 2rem; }.profile.offset { border-top: 1px solid rgba(36,48,58,.19); border-left: 5px solid var(--accent); }.profile.compact { margin-top: -1rem; }
.profile-head { display: flex; justify-content: space-between; align-items: center; }
.avatar { display: grid; place-items: center; width: 52px; height: 52px; border: 1px solid var(--accent); color: var(--accent); font: 700 .9rem var(--font-mono); }
.category { color: var(--accent); }
.profile h3 { margin-top: 1.5rem; font-size: 1.65rem; }.profile .role { margin: .4rem 0 1rem; color: var(--accent); font-weight: 650; }
.profile p { margin-top: .8rem; font-size: .84rem; }.profile .orcid { margin-top: 1.25rem; color: var(--muted); }
.mini-plate { display: grid; grid-template-columns: 1.2fr 8px .8fr; height: 26px; margin-top: 1rem; }
.mini-plate span { background: color-mix(in srgb, var(--accent), white 78%); }.mini-plate i { position: relative; border-left: 1px solid var(--gold); }.mini-plate i::after { content: ""; position: absolute; left: -4px; top: 10px; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); }
.profile.alternate .mini-plate { grid-template-columns: .65fr 8px 1.35fr; }.profile.offset .mini-plate { grid-template-columns: 1.5fr 8px .5fr; }
.contact { display: grid; gap: .5rem; margin-top: 1rem; padding-top: 1rem; border-top: var(--border); }
.contact b, .reference-only { color: var(--accent); font: 700 .68rem var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
.contact a { overflow-wrap: anywhere; font-size: .82rem; }.copy-email { justify-self: start; padding: .4rem .7rem; border: 1px solid var(--accent); background: transparent; color: var(--carbon); border-radius: var(--radius-sm); cursor: pointer; }
.reference-only { margin-top: 1rem !important; padding-top: 1rem; border-top: var(--border); }

/* 17. Independence Note */
.independence { padding-block: var(--space-6); background: var(--indigo-wash); }
.independence .container { display: grid; grid-template-columns: .9fr 1.1fr; gap: var(--space-6); }
.independence p + p { margin-top: 1rem; }

/* 18. Research Notes */
.notes-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: var(--space-4); }
.research-note { --accent: var(--gold); background: var(--white); border: var(--border); border-left: 4px solid var(--accent); }
.research-note.atmosphere { --accent: var(--atmosphere); }.research-note.electro { --accent: var(--rust); }.research-note.education { --accent: var(--indigo); }
.research-note summary { position: relative; padding: 1.4rem 3.2rem 1.4rem 1.4rem; cursor: pointer; list-style: none; }
.research-note summary::-webkit-details-marker { display: none; }
.research-note summary::after { content: "+"; position: absolute; right: 1.4rem; top: 1.3rem; color: var(--accent); font: 1.5rem var(--font-mono); }
.research-note details[open] summary::after { content: "−"; }
.research-note summary > span { color: var(--accent); }.research-note h3 { margin: .65rem 0; }.research-note summary p { font-size: .88rem; }
.note-content { padding: 0 1.4rem 1.4rem; border-top: var(--border); }.note-content > p:first-child { padding-top: 1rem; }.note-tags { margin-top: 1rem; color: var(--accent); font-size: .65rem; }
.no-results { margin-top: 2rem; padding: 2rem; text-align: center; border: var(--border); }

/* 19. Search */
.search-panel { display: grid; grid-template-columns: 1fr auto; gap: .65rem 1rem; margin-top: var(--space-5); padding: 1.25rem; background: var(--carbon); color: var(--white); border-radius: var(--radius-sm); }
.search-panel label { grid-column: 1 / -1; font: 700 .75rem var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
.search-panel > div { display: flex; }
.search-panel input { width: 100%; min-width: 0; padding: .8rem 1rem; border: 0; background: var(--white); color: var(--carbon); }
.search-panel button { padding: .75rem 1rem; border: 0; border-left: var(--border); background: var(--gold-wash); color: var(--carbon); cursor: pointer; }
.search-panel output { align-self: center; min-width: 65px; font: 700 .78rem var(--font-mono); }

/* 20. About */
.about { background: var(--moss-wash); }
.about-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: clamp(3rem, 7vw, 7rem); }
.about h2 { margin-bottom: 2rem; }.about p + p { margin-top: 1rem; }
.principles { border-top: 1px solid var(--moss); }
.principles article { display: grid; grid-template-columns: 45px 1fr; gap: .5rem 1rem; padding: 1.3rem 0; border-bottom: 1px solid rgba(116,128,113,.45); }
.principles span { grid-row: span 2; color: var(--moss); font: 700 .78rem var(--font-mono); }.principles p { margin: 0; font-size: .88rem; }

/* 21. Final CTA */
.final-cta { padding-block: var(--space-7); background: var(--carbon); color: var(--cool-paper); }
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); align-items: center; }
.cta-copy h2 { color: var(--white); }.cta-copy > p:not(.eyebrow) { max-width: 600px; margin-top: 1.5rem; }
.button.light { background: var(--white); border-color: var(--white); color: var(--carbon); }.button.outline-light { border-color: rgba(255,255,255,.55); color: var(--white); }
.zone-composition { position: relative; display: grid; grid-template-columns: 1fr 10px 1.2fr 10px 1fr; min-height: 330px; padding: 2.5rem 0; }
.zone-composition > div { display: grid; place-items: center; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.22); font: 700 .72rem var(--font-mono); letter-spacing: .12em; }
.zone-composition > div:nth-of-type(2) { grid-column: 3; background: rgba(176,138,79,.18); }.zone-composition > div:nth-of-type(3) { grid-column: 5; }
.question-zone { display: flex !important; flex-direction: column; gap: 1rem; }.question-zone strong { font: 2rem var(--font-editorial); color: var(--white); }
.floating { position: absolute; padding: .25rem .45rem; background: var(--carbon); color: var(--gold); font: 700 .6rem var(--font-mono); letter-spacing: .12em; }
.condition { left: 5%; top: 1rem; }.scale { right: 8%; top: 1rem; }.evidence { left: 42%; bottom: .5rem; }.mechanism { left: 0; bottom: 3.2rem; }.limit { right: 0; bottom: 3.2rem; }

/* 22. Footer */
footer { padding-block: var(--space-6) 2rem; background: #1c272f; color: var(--cool-paper); border-top: 1px solid rgba(255,255,255,.1); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr auto; gap: var(--space-5); }
.footer-grid img { width: 55px; filter: brightness(0) invert(1); opacity: .9; }.footer-grid h2 { margin-top: 1rem; color: var(--white); font-size: 1.8rem; }
.footer-grid p { max-width: 480px; margin-top: .5rem; }.footer-note { color: var(--gold); font: 700 .68rem var(--font-mono); letter-spacing: .12em; text-transform: uppercase; }
footer nav { display: grid; gap: .35rem; align-content: start; } footer nav a, .back-top { font-size: .85rem; text-decoration: none; }.back-top { color: var(--gold); }
.copyright { margin-top: var(--space-5); padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.14); color: #aeb7bc; font-size: .75rem; }

/* 23. Reveal */
.js-enabled .reveal { opacity: 0; transform: translateY(18px); transition: opacity 650ms ease, transform 650ms ease; }
.js-enabled .reveal.is-visible { opacity: 1; transform: none; }

/* 24. Responsive */
@media (max-width: 1120px) {
  .header-inner { min-height: 70px; }.brand { flex-basis: 260px; }.brand img { width: 255px; }
  .menu-toggle { display: block; }
  #site-navigation { position: absolute; left: 0; right: 0; top: 100%; display: none; padding: 1.25rem max(1.25rem, calc((100vw - var(--container))/2)); background: var(--paper); border-bottom: var(--border); box-shadow: var(--shadow); }
  #site-navigation.is-open { display: grid; } #site-navigation a { padding: .4rem; }
  .hero-grid { grid-template-columns: 1fr; }.hero-copy { max-width: 800px; }.junction-desk { max-width: 760px; }
  .field-grid { grid-template-columns: 1fr 1fr; }.field:nth-child(2) { border-right: 0; }.field:nth-child(-n+2) { border-bottom: var(--border); }
  .profile-grid { grid-template-columns: 1fr 1fr; }.profile.alternate, .profile.compact { margin-top: 0; }
}
@media (max-width: 800px) {
  .section { padding-block: var(--space-6); }.band-points { grid-template-columns: 1fr 1fr; }
  .case { grid-template-columns: 1fr 1fr; }.case-label { grid-row: auto; }.case-question { grid-column: 2; }.case aside { grid-column: 1 / -1; }
  .method-grid { grid-template-columns: 1fr; }.method-item:nth-child(n) { grid-column: auto; margin-left: 0; }
  .checklist, .independence .container, .about-grid, .cta-grid { grid-template-columns: 1fr; }.checklist ul { grid-template-columns: 1fr 1fr; }
  .notes-grid, .profile-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }.back-top { justify-self: end; }
}
@media (max-width: 590px) {
  :root { --space-7: 5.5rem; }.container { width: min(calc(100% - 1.5rem), var(--container)); }
  .brand { flex-basis: 230px; }.brand img { width: 230px; }.hero { background: var(--paper); }.hero-grid { gap: 2rem; }
  .junction-desk .junction-plate:nth-child(n) { width: 100%; margin-left: 0; }.plate-fields { grid-template-columns: 1fr 11px 1fr; }.plate-fields > div { padding: .65rem; }
  .band-points, .field-grid, .profile-grid, .notes-grid { grid-template-columns: 1fr; }.field { border-right: 0; border-bottom: var(--border); }
  .case { grid-template-columns: 1fr; }.case-label, .case-question, .case aside { grid-column: auto; }
  .checklist ul { grid-template-columns: 1fr; }.search-panel { grid-template-columns: 1fr; }.search-panel label { grid-column: auto; }.search-panel > div { flex-direction: column; }.search-panel button { border-left: 0; border-top: var(--border); }
  .zone-composition { min-height: 260px; }.question-zone strong { font-size: 1.35rem; }
  .footer-grid { grid-template-columns: 1fr; }.back-top { justify-self: start; }
}
@media (max-width: 360px) {
  .brand { flex-basis: 205px; }.brand img { width: 205px; }.menu-toggle { width: 42px; }
  .plate-fields span { font-size: .66rem; }.button { width: 100%; }.case > div, .case > aside { padding: 1.15rem; }
}

/* 25. Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .js-enabled .reveal { opacity: 1; transform: none; }
}