:root {
  --paper: #f5f5f1;
  --sheet: #fbfbf8;
  --ink: #18212b;
  --navy: #213b55;
  --muted: #6f767b;
  --faint: #a4a9aa;
  --rule: #d8d9d4;
  --accent: #8a5b3d;
  --tag: #ecece6;
  --code: #202932;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(24, 33, 43, .018) 1px, transparent 1px) 0 0 / 48px 48px,
    var(--paper);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 2px;
}

.page {
  width: min(1400px, calc(100% - 64px));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  border-inline: 1px solid var(--rule);
  background: rgba(251, 251, 248, .84);
}

.rail {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 48px 31px 36px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--rule);
  background: rgba(245, 245, 241, .8);
  backdrop-filter: blur(8px);
}

.monogram {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--navy);
  color: var(--navy);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
}

.rail nav {
  margin-top: 68px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.rail nav a {
  width: fit-content;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: .1em;
  text-transform: uppercase;
  transition: color .18s ease, transform .18s ease;
}

.rail nav a:hover,
.rail nav a[aria-current="page"] {
  color: var(--navy);
  transform: translateX(3px);
}

.rail nav a[aria-current="page"]::before {
  content: "—";
  margin-right: 8px;
  color: var(--accent);
}

.rail-bottom {
  margin-top: auto;
  color: var(--faint);
  font-family: var(--sans);
  font-size: 10px;
  line-height: 1.55;
  letter-spacing: .06em;
  text-transform: uppercase;
}

main { min-width: 0; padding: 46px clamp(46px, 6vw, 94px) 50px; }

.masthead {
  min-height: 354px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 210px;
  gap: clamp(40px, 6vw, 86px);
  align-items: center;
  padding: 25px 0 48px;
  border-bottom: 1px solid var(--rule);
}

.page-header {
  padding: 35px 0 42px;
  border-bottom: 1px solid var(--rule);
}

.eyebrow,
.section-kicker {
  margin: 0 0 15px;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(52px, 6vw, 82px);
  font-weight: 400;
  line-height: .98;
  letter-spacing: -.035em;
}

.page-header h1 { font-size: clamp(44px, 5vw, 66px); }

.role {
  margin: 20px 0 17px;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.35;
}

.intro,
.page-lead {
  max-width: 760px;
  margin: 18px 0 0;
  color: #4f575d;
  font-size: 17px;
  line-height: 1.7;
}

.actions {
  margin-top: 27px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 23px;
}

.social-links {
  margin-top: 23px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 17px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.social-links a {
  border-bottom: 1px solid transparent;
}

.social-links a:hover {
  color: var(--accent);
  border-bottom-color: currentColor;
}

.button {
  min-height: 42px;
  padding: 10px 17px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--navy);
  color: var(--sheet);
  background: var(--navy);
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  transition: background .18s ease, color .18s ease;
}

.button:hover { color: var(--navy); background: transparent; }

.button.secondary { color: var(--navy); background: transparent; }
.button.secondary:hover { color: var(--sheet); background: var(--navy); }

.text-link {
  width: fit-content;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--rule);
  color: var(--navy);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 650;
}

.portrait-wrap { align-self: start; margin-top: 7px; }

.portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  display: block;
  object-fit: cover;
  object-position: 50% 28%;
  filter: grayscale(1) contrast(.96);
  border: 1px solid var(--rule);
  padding: 7px;
  background: var(--sheet);
}

.portrait-caption {
  margin: 9px 0 0;
  color: var(--faint);
  font-family: var(--sans);
  font-size: 9px;
  letter-spacing: .11em;
  text-align: right;
  text-transform: uppercase;
}

.focus {
  padding: 22px 0;
  display: flex;
  align-items: center;
  gap: 25px;
  border-bottom: 1px solid var(--rule);
}

.focus-label {
  flex: 0 0 auto;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.tags { display: flex; flex-wrap: wrap; gap: 8px; }

.tag {
  padding: 5px 11px;
  color: var(--navy);
  background: var(--tag);
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: .025em;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, .72fr);
  gap: clamp(44px, 6vw, 80px);
  padding: 42px 0 24px;
}

.section { padding: 42px 0; border-bottom: 1px solid var(--rule); }

.section-head {
  margin-bottom: 12px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
}

h2 {
  margin: 0;
  color: var(--navy);
  font-size: 27px;
  font-weight: 400;
  letter-spacing: -.015em;
}

h3 {
  margin: 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.38;
}

.section-head > a {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.work-list { border-top: 1px solid var(--rule); }

.work-item {
  padding: 18px 0;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: start;
  border-bottom: 1px solid var(--rule);
  transition: background .18s ease, padding .18s ease;
}

.work-item:hover {
  margin-inline: -12px;
  padding-inline: 12px;
  background: var(--tag);
}

.index,
.year,
.meta {
  color: var(--faint);
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: .1em;
}

.index { padding-top: 3px; }

.work-item p,
.card p,
.note-card p:last-child,
.timeline p {
  margin: 5px 0 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 11px;
  line-height: 1.55;
}

.side-stack { display: grid; align-content: start; gap: 28px; }

.note-card {
  position: relative;
  padding: 19px 0 21px;
  display: block;
  border-block: 1px solid var(--rule);
  transition: padding .18s ease, background .18s ease;
}

.note-card:hover {
  margin-inline: -12px;
  padding-inline: 12px;
  background: var(--tag);
}

.meta {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.atlas {
  padding: 22px;
  display: block;
  border: 1px solid var(--rule);
  background: rgba(236, 236, 230, .55);
  transition: border-color .18s ease, transform .18s ease;
}

.atlas:hover { transform: translateY(-2px); border-color: var(--accent); }

.atlas h3 { margin: 0 0 8px; color: var(--navy); font-weight: 400; }

.atlas p {
  margin: 0 0 13px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 11px;
  line-height: 1.55;
}

.atlas small {
  color: var(--accent);
  font-family: var(--sans);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.timeline {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 42px;
}

.timeline-column { border-top: 1px solid var(--rule); }

.timeline-item {
  position: relative;
  padding: 19px 0 20px 24px;
  border-bottom: 1px solid var(--rule);
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 1px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--sheet);
}

.timeline-item::after {
  content: "";
  position: absolute;
  top: 35px;
  bottom: -1px;
  left: 4px;
  width: 1px;
  background: var(--rule);
}

.timeline-date {
  margin: 0 0 5px;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.timeline h3 { font-size: 16px; }

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.card {
  min-height: 210px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--rule);
  background: rgba(251, 251, 248, .72);
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  background: var(--sheet);
}

.card .meta { margin-bottom: 22px; }
.card h3 { font-size: 20px; }
.card .text-link { margin-top: auto; padding-top: 22px; }

.category-nav {
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  border-bottom: 1px solid var(--rule);
}

.category-nav a {
  padding: 6px 11px;
  border: 1px solid var(--rule);
  color: var(--navy);
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 650;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) 210px;
  justify-content: space-between;
  gap: 58px;
  padding-top: 38px;
}

.article {
  font-size: 18px;
  line-height: 1.78;
}

.article h2 { margin: 48px 0 12px; font-size: 32px; }
.article h3 { margin: 32px 0 10px; font-size: 22px; color: var(--navy); }
.article p { margin: 0 0 20px; }
.article a { color: var(--accent); border-bottom: 1px solid rgba(138, 91, 61, .35); }
.article sup a { border: 0; }

.article-meta {
  margin-top: 18px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 11px;
}

.toc {
  position: sticky;
  top: 42px;
  align-self: start;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

.toc strong {
  display: block;
  margin-bottom: 10px;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 9px;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.toc a {
  padding: 5px 0;
  display: block;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 11px;
}

pre {
  overflow-x: auto;
  margin: 26px 0;
  padding: 22px;
  border-left: 3px solid var(--accent);
  color: #eef1f3;
  background: var(--code);
  font: 13px/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

code {
  padding: .08em .28em;
  color: var(--navy);
  background: var(--tag);
  font: .84em/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

pre code { padding: 0; color: inherit; background: none; font: inherit; }
.token-comment { color: #a6b0b8; }
.token-keyword { color: #f0bf77; }
.token-function { color: #8bc3d2; }
.token-string { color: #a8d28e; }

.equation {
  overflow-x: auto;
  margin: 28px 0;
  padding: 22px;
  border-block: 1px solid var(--rule);
  color: var(--navy);
  text-align: center;
}

.callout {
  margin: 28px 0;
  padding: 20px 22px;
  border-left: 3px solid var(--accent);
  background: var(--tag);
}

.callout strong {
  display: block;
  margin-bottom: 5px;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.references {
  margin: 45px 0 0;
  padding: 24px 0 0 22px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
  line-height: 1.6;
}

.references li { margin-bottom: 10px; padding-left: 6px; }

.paper-list { margin-top: 24px; border-top: 1px solid var(--rule); }

.paper {
  padding: 20px 0;
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr) auto;
  gap: 22px;
  border-bottom: 1px solid var(--rule);
}

.paper-topic,
.paper-year {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.paper p { margin: 5px 0 0; color: var(--muted); font-family: var(--sans); font-size: 11px; }

.direction {
  display: grid;
  grid-template-columns: minmax(180px, .55fr) minmax(0, 1.45fr);
  gap: clamp(30px, 5vw, 72px);
  padding: 42px 0;
  border-top: 1px solid var(--rule);
}

.direction:first-of-type { border-top: 0; padding-top: 12px; }
.direction-head h2 { margin: 0 0 12px; }

.direction-head p:last-child {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
  line-height: 1.65;
}

.research-list { border-top: 1px solid var(--rule); }

.research-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
}

.research-entry h3 { margin: 0 0 7px; font-size: 17px; }

.research-entry p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
  line-height: 1.65;
}

.entry-links {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  white-space: nowrap;
}

.entry-links a {
  color: var(--accent);
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-bottom: 1px solid currentColor;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.topic-card {
  min-height: 210px;
  padding: 26px;
  border: 1px solid var(--rule);
  background: rgba(255, 255, 255, .25);
  color: inherit;
  transition: border-color 160ms ease, transform 160ms ease;
}

a.topic-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.topic-card h2 { margin: 16px 0 10px; font-size: 20px; }

.topic-card p {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
  line-height: 1.65;
}

.muted-card { opacity: .65; }
.compact-header { padding-bottom: 28px; }
.topic-article { max-width: 780px; }

.topic-article h2 {
  margin-top: 42px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
}

.topic-article h3 { margin: 30px 0 8px; font-size: 19px; }
.topic-article p,
.topic-article li { font-size: 16px; line-height: 1.8; }
.topic-article ul { padding-left: 22px; }
.topic-article a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

.archive-groups {
  border-top: 1px solid var(--rule);
}

.archive-group {
  border-bottom: 1px solid var(--rule);
}

.archive-group summary {
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  color: var(--navy);
  cursor: pointer;
  font-size: 19px;
}

.archive-group summary span:last-child {
  color: var(--faint);
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.archive-list {
  margin: 0;
  padding: 0 0 22px;
  list-style: none;
  counter-reset: archive-note;
}

.archive-list li {
  counter-increment: archive-note;
  padding: 13px 0 13px 34px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  position: relative;
  border-top: 1px solid rgba(216, 217, 212, .65);
}

.archive-list li::before {
  content: counter(archive-note, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 15px;
  color: var(--faint);
  font-family: var(--sans);
  font-size: 9px;
}

.archive-list small {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 9px;
  letter-spacing: .05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.archive-note {
  margin: 34px 0 54px;
  max-width: 720px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 11px;
}

.empty-state {
  min-height: 300px;
  padding: 52px 0;
  border-top: 1px solid var(--rule);
}

.empty-state h2 {
  margin: 10px 0 12px;
}

.empty-state p:last-child {
  max-width: 560px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
}

.slide-frame {
  width: 100%;
  min-height: 620px;
  margin-top: 28px;
  border: 1px solid var(--rule);
  background: #fff;
}

.cv-frame {
  width: 100%;
  min-height: 880px;
  margin-top: 28px;
  border: 1px solid var(--rule);
  background: #fff;
}

footer {
  padding: 24px 0 4px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--rule);
  color: var(--faint);
  font-family: var(--sans);
  font-size: 9px;
  letter-spacing: .07em;
  text-transform: uppercase;
}

@media (max-width: 980px) {
  .page { width: min(100% - 32px, 900px); grid-template-columns: 1fr; }
  .rail {
    position: static;
    height: auto;
    padding: 22px 30px;
    flex-direction: row;
    align-items: center;
    border-right: 0;
    border-bottom: 1px solid var(--rule);
  }
  .rail nav {
    margin: 0 0 0 auto;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px 18px;
  }
  .rail nav a[aria-current="page"]::before,
  .rail-bottom { display: none; }
  main { padding: 38px 42px; }
  .masthead { grid-template-columns: minmax(0, 1fr) 180px; }
  .article-layout { grid-template-columns: 1fr; }
  .toc { position: static; order: -1; }
}

@media (max-width: 720px) {
  .page { width: 100%; border: 0; }
  .rail { padding: 17px 20px; }
  .monogram { width: 38px; height: 38px; }
  .rail nav { display: none; }
  main { padding: 28px 22px 34px; }
  .masthead {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 18px 0 36px;
  }
  h1 { font-size: clamp(48px, 16vw, 68px); }
  .role { font-size: 18px; }
  .intro, .page-lead { font-size: 16px; }
  .portrait-wrap { width: min(52vw, 190px); }
  .focus { align-items: flex-start; flex-direction: column; gap: 10px; }
  .content-grid,
  .timeline,
  .cards { grid-template-columns: 1fr; }
  .content-grid { gap: 42px; }
  .work-item { grid-template-columns: 32px minmax(0, 1fr); }
  .work-item .year { display: none; }
  .paper { grid-template-columns: 1fr; gap: 6px; }
  .paper-year { display: none; }
  .direction { grid-template-columns: 1fr; gap: 18px; }
  .research-entry { grid-template-columns: 1fr; }
  .topic-grid { grid-template-columns: 1fr; }
  .archive-list li { grid-template-columns: 1fr; gap: 5px; }
  .archive-list small { white-space: normal; }
  .slide-frame { min-height: 480px; }
  .cv-frame { min-height: 650px; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}