:root {
  --paper: #f2ede3; --paper-light: #faf7f0; --ink: #1c2926; --ink-soft: #53615d;
  --teal: #1c5a53; --teal-dark: #123e39; --copper: #b35c37; --line: #cfc7b8;
  --serif: "Literata", Georgia, serif; --sans: "DM Sans", Arial, sans-serif;
  --page: min(1120px, calc(100vw - 96px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 16px; line-height: 1.65; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 4px; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; letter-spacing: -0.035em; line-height: 1.12; }
h1 { max-width: 900px; margin-bottom: 32px; font-size: clamp(3.35rem, 7vw, 7rem); }
h1 em { color: var(--copper); font-weight: 400; }
h2 { margin-bottom: 24px; font-size: clamp(2.2rem, 4vw, 3.8rem); }
h3 { font-size: clamp(1.4rem, 2.2vw, 2.05rem); }
.skip-link { position: fixed; z-index: 100; top: 12px; left: 12px; padding: 10px 16px; color: white; background: var(--teal-dark); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.site-header { display: flex; align-items: center; justify-content: space-between; width: var(--page); min-height: 92px; margin: 0 auto; border-bottom: 1px solid var(--line); }
.wordmark { display: flex; gap: 13px; align-items: center; text-decoration: none; }
.wordmark span { display: grid; width: 38px; height: 38px; color: var(--paper-light); background: var(--teal); font-family: var(--serif); font-size: 0.8rem; place-items: center; }
.wordmark strong { font-size: 0.88rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }
#site-nav { display: flex; gap: 28px; }
#site-nav a { position: relative; color: var(--ink-soft); font-size: 0.87rem; text-decoration: none; }
#site-nav a:hover, #site-nav a:focus-visible, #site-nav a[aria-current="page"] { color: var(--copper); }
#site-nav a[aria-current="page"]::after { position: absolute; right: 0; bottom: -8px; left: 0; height: 1px; background: var(--copper); content: ""; }
.menu-button { display: none; }
.hero { display: grid; grid-template-columns: minmax(0, 3fr) minmax(250px, 1fr); gap: clamp(48px, 8vw, 110px); align-items: end; width: var(--page); min-height: calc(100vh - 92px); margin: 0 auto; padding: 96px 0 88px; }
.page-hero { width: var(--page); min-height: 550px; margin: 0 auto; padding: 110px 0 90px; border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 980px; }
.about-hero { display: grid; grid-template-columns: 2fr minmax(220px, 0.65fr); gap: 9vw; align-items: end; }
.eyebrow, .section-number, .project-meta, .project-number, .step-kicker, .pub-type, .bibliography-kicker { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; }
.eyebrow, .section-number, .step-kicker, .pub-type, .bibliography-kicker { color: var(--copper); }
.hero-summary { max-width: 700px; margin-bottom: 36px; color: var(--ink-soft); font-family: var(--serif); font-size: clamp(1.15rem, 2vw, 1.5rem); line-height: 1.55; }
.hero-actions, .project-links { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 49px; padding: 10px 20px; border: 1px solid var(--teal); font-size: 0.86rem; font-weight: 600; text-decoration: none; }
.button:hover, .button:focus-visible { color: white; background: var(--copper); border-color: var(--copper); }
.button-primary { color: white; background: var(--teal); }
.button-small { min-height: 43px; padding: 8px 16px; }
.button-light { margin-top: 20px; color: var(--teal-dark); background: var(--paper-light); border-color: var(--paper-light); }
.text-link { font-size: 0.88rem; font-weight: 600; }
.identity-card { padding-bottom: 8px; }
.portrait-frame { position: relative; margin-bottom: 24px; }
.portrait-frame::before { position: absolute; z-index: -1; inset: -12px 12px 12px -12px; border: 1px solid var(--copper); content: ""; }
.portrait-frame img { width: 100%; aspect-ratio: 1; filter: grayscale(20%) sepia(8%); object-fit: cover; }
.identity-copy { padding-left: 12px; border-left: 2px solid var(--copper); color: var(--ink-soft); font-size: 0.82rem; line-height: 1.55; }
.identity-copy p { margin-bottom: 0; }
.identity-copy .signature { margin-bottom: 7px; color: var(--ink); font-family: var(--serif); font-size: 1.12rem; }
.ruled-section { width: var(--page); margin: 0 auto; padding: 110px 0; border-top: 1px solid var(--line); }
.page-hero + .ruled-section { border-top: 0; }
.premise-grid, .split-callout { display: grid; grid-template-columns: 1fr 1fr; gap: 9vw; margin-top: 42px; }
.split-callout { margin-top: 0; }
.premise-grid h2 { max-width: 500px; }
.premise-grid > div { max-width: 600px; }
.lead { color: var(--teal-dark); font-family: var(--serif); font-size: 1.35rem; line-height: 1.55; }
.section-heading { max-width: 820px; margin-bottom: 64px; }
.section-heading > p:last-child { max-width: 670px; color: var(--ink-soft); font-size: 1.05rem; }
.research-path { display: grid; grid-template-columns: 1fr 42px 1fr 42px 1fr; align-items: stretch; }
.path-step { position: relative; display: flex; flex-direction: column; min-height: 380px; padding: 32px; border: 1px solid var(--line); background: rgb(250 247 240 / 45%); }
.compact-path .path-step { min-height: 350px; }
.step-index { display: grid; width: 38px; height: 38px; margin-bottom: 42px; border: 1px solid var(--copper); border-radius: 50%; color: var(--copper); font-family: var(--serif); place-items: center; }
.path-step h3 { margin-bottom: 20px; }
.path-step p:not(.step-kicker) { color: var(--ink-soft); font-size: 0.93rem; }
.path-step a { margin-top: auto; color: var(--teal); font-weight: 600; }
.path-arrow { display: grid; color: var(--copper); font-family: var(--serif); font-size: 1.5rem; place-items: center; }
.portal-grid, .principle-grid, .experience-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.portal-card, .principle-grid article, .experience-grid article { min-height: 270px; padding: 34px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.portal-card { text-decoration: none; }
.portal-card > span, .principle-grid article > span { color: var(--copper); font-size: 0.75rem; font-weight: 600; }
.portal-card h3, .principle-grid h3, .experience-grid h3 { margin: 42px 0 16px; }
.portal-card p, .principle-grid p, .experience-grid p { color: var(--ink-soft); }
.portal-card:hover, .portal-card:focus-visible { color: white; background: var(--teal); outline: 0; }
.portal-card:hover p, .portal-card:focus-visible p { color: #d9e2df; }
.principle-grid article, .experience-grid article { min-height: 300px; }
blockquote { max-width: 850px; margin: 0 auto; padding: 50px 48px 120px; color: var(--teal-dark); text-align: center; }
blockquote p { font-family: var(--serif); font-size: clamp(1.5rem, 2.8vw, 2.35rem); line-height: 1.45; }
blockquote::before { display: block; width: 80px; height: 1px; margin: 0 auto 32px; background: var(--copper); content: ""; }
.project-list { padding-top: 0; }
.project { position: relative; padding: 80px 0; overflow: hidden; border-bottom: 1px solid var(--line); scroll-margin-top: 30px; }
.project:first-child { padding-top: 30px; }
.project-meta { display: flex; justify-content: space-between; margin-bottom: 52px; color: var(--ink-soft); }
.project-meta span:last-child { color: var(--copper); }
.project-body { display: grid; grid-template-columns: 1fr 2fr; gap: 7vw; }
.project-number { margin-bottom: 16px; color: var(--copper); }
.project h2 { margin-bottom: 0; font-size: clamp(2.2rem, 4.8vw, 4.7rem); }
.project-description { max-width: 680px; }
.project-description > p { color: var(--ink-soft); }
.project-description .project-lead { color: var(--ink); font-family: var(--serif); font-size: 1.28rem; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0 32px; }
.tags span { padding: 5px 10px; border: 1px solid var(--line); color: var(--ink-soft); font-size: 0.75rem; }
.model-figure { position: relative; width: min(100%, 650px); height: 340px; margin: 70px auto 0; }
.model-core, .orbit { position: absolute; top: 50%; left: 50%; display: grid; border-radius: 50%; transform: translate(-50%, -50%); place-items: center; }
.model-core { z-index: 4; width: 160px; height: 160px; color: white; background: var(--teal); box-shadow: 0 16px 35px rgb(28 90 83 / 20%); text-align: center; }
.model-core strong { font-family: var(--serif); font-size: 1.55rem; }
.model-core span { font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase; }
.orbit { border: 1px solid var(--line); }
.orbit span { position: absolute; padding: 5px 9px; color: var(--ink-soft); background: var(--paper); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; }
.orbit-one { width: 270px; height: 210px; }.orbit-one span { top: -14px; }
.orbit-two { width: 410px; height: 275px; }.orbit-two span { right: -28px; }
.orbit-three { width: 560px; height: 335px; }.orbit-three span { bottom: 2px; }
.about { display: grid; grid-template-columns: 1fr 1.5fr; gap: 9vw; }
.about-intro { position: sticky; top: 40px; align-self: start; }
.about-body > p:not(.lead) { color: var(--ink-soft); }
.credentials { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 48px; }
.credentials div { padding-top: 18px; border-top: 2px solid var(--copper); }
.credentials strong, .credentials span { display: block; }
.credentials strong { margin-bottom: 8px; font-family: var(--serif); font-size: 2rem; font-weight: 500; }
.credentials span { color: var(--ink-soft); font-size: 0.72rem; line-height: 1.45; }
.writing { display: grid; grid-template-columns: 1fr 1fr; gap: 9vw; width: var(--page); margin: 0 auto 70px; padding: 74px; color: white; background: var(--teal-dark); }
.writing .section-number { color: #dfb69e; }
.writing p { max-width: 520px; color: #d9e2df; }
.bibliography-note { max-width: 660px; color: var(--ink-soft); font-size: 0.86rem; }
.bibliography-tools { position: sticky; z-index: 5; top: 0; width: var(--page); margin: 0 auto; padding: 28px 0 24px; border-bottom: 1px solid var(--line); background: rgb(242 237 227 / 96%); backdrop-filter: blur(8px); }
.bibliography-tools > label { display: block; margin-bottom: 8px; color: var(--copper); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; }
.search-row { display: grid; grid-template-columns: 1fr auto; gap: 22px; align-items: center; }
#publication-search { width: 100%; padding: 13px 0; border: 0; border-bottom: 1px solid var(--ink); outline: 0; color: var(--ink); background: transparent; font: 1.05rem var(--serif); }
#publication-search:focus { border-color: var(--copper); box-shadow: 0 1px var(--copper); }
#publication-result-count { color: var(--ink-soft); font-size: 0.8rem; white-space: nowrap; }
.category-links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 18px; }
.category-links a { color: var(--ink-soft); font-size: 0.76rem; }
.bibliography-section { width: var(--page); margin: 0 auto; padding: 90px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 180px; }
.bibliography-heading { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: end; margin-bottom: 48px; }
.bibliography-heading h2 { max-width: 780px; margin-bottom: 0; }
.bibliography-heading > a { color: var(--ink-soft); font-size: 0.76rem; }
.bibliography-list { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.bibliography-list li { display: grid; grid-template-columns: 72px 1fr; gap: 28px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.bibliography-list li[hidden], .bibliography-section[hidden] { display: none; }
.bibliography-list p { max-width: 900px; margin-bottom: 0; color: var(--ink-soft); }
.bibliography-list a { color: var(--teal); overflow-wrap: anywhere; }
.citation-year { color: var(--copper); font-family: var(--serif); font-size: 1.08rem; }
.status-label { display: inline-block; margin-left: 8px; padding: 2px 7px; border: 1px solid var(--copper); color: var(--copper); font: 0.64rem var(--sans); letter-spacing: 0.06em; text-transform: uppercase; }
footer { display: grid; grid-template-columns: 2fr 1fr auto; gap: 50px; align-items: end; width: var(--page); margin: 0 auto; padding: 58px 0 70px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 0.8rem; }
footer p { margin-bottom: 0; }
.footer-name { margin-bottom: 6px; color: var(--ink); font-family: var(--serif); font-size: 1.2rem; }
.footer-links { display: flex; gap: 20px; }
.copyright { white-space: nowrap; }
@media (max-width: 900px) {
  :root { --page: min(100% - 48px, 720px); }
  .site-header { position: relative; }
  .menu-button { display: grid; width: 42px; height: 42px; padding: 11px; border: 0; background: transparent; place-content: center; }
  .menu-button span:not(.sr-only) { display: block; width: 22px; height: 1px; margin: 3px 0; background: var(--ink); }
  #site-nav { position: absolute; z-index: 10; top: 76px; right: 0; left: 0; display: none; flex-direction: column; gap: 0; padding: 12px 20px; background: var(--paper-light); box-shadow: 0 12px 20px rgb(28 41 38 / 8%); }
  #site-nav.open { display: flex; }
  #site-nav a { padding: 12px 0; }
  #site-nav a[aria-current="page"]::after { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 82px 0; }
  .page-hero { min-height: 0; padding: 82px 0; }
  .about-hero { grid-template-columns: 1fr; }
  .about-hero .portrait-frame { max-width: 280px; }
  .identity-card { display: grid; grid-template-columns: 180px 1fr; gap: 30px; align-items: end; max-width: 520px; }
  .identity-card .portrait-frame { margin-bottom: 0; }
  .premise-grid, .about, .split-callout, .writing { grid-template-columns: 1fr; gap: 35px; }
  .research-path { grid-template-columns: 1fr; }
  .path-arrow { height: 42px; transform: rotate(90deg); }
  .path-step { min-height: 310px; }
  .about-intro { position: static; }
  .writing { padding: 52px; }
  .bibliography-tools { position: static; }
  footer { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 620px) {
  :root { --page: calc(100vw - 36px); }
  h1 { font-size: clamp(3rem, 14vw, 4.7rem); }
  .site-header { min-height: 76px; }
  .hero, .page-hero { padding: 64px 0; }
  .identity-card { grid-template-columns: 112px 1fr; gap: 20px; }
  .ruled-section { padding: 78px 0; }
  .portal-grid, .principle-grid, .experience-grid, .credentials { grid-template-columns: 1fr; }
  .portal-card, .principle-grid article, .experience-grid article { min-height: 0; }
  .project-meta { gap: 20px; }
  .project-body { grid-template-columns: 1fr; gap: 28px; }
  .project h2 { font-size: 2.7rem; }
  .model-figure { height: 290px; transform: scale(0.72); }
  .writing { width: 100%; margin-bottom: 0; padding: 64px 24px; }
  .search-row { grid-template-columns: 1fr; gap: 8px; }
  .bibliography-section { padding: 70px 0; }
  .bibliography-heading { grid-template-columns: 1fr; }
  .bibliography-heading > a { display: none; }
  .bibliography-list li { grid-template-columns: 52px 1fr; gap: 16px; padding: 22px 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }