:root {
  --ink: #17201d;
  --muted: #5e6965;
  --line: #d9dfdc;
  --paper: #f7f8f6;
  --white: #ffffff;
  --accent: #174f3d;
  --accent-soft: #e9efec;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Inter", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 400 16px/1.7 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }

.site-header, main, footer {
  width: min(1180px, calc(100% - 64px));
  margin-inline: auto;
}
.site-header {
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.site-name { color: var(--ink); font-weight: 600; font-size: 15px; text-decoration: none; }
.site-name:hover { color: var(--accent); }
nav { display: flex; gap: 32px; }
nav a { color: var(--muted); font-size: 14px; text-decoration: none; }
nav a:hover { color: var(--ink); }

.hero { padding: 72px 0 64px; }
.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(250px, .65fr);
  align-items: center;
  gap: clamp(48px, 7vw, 100px);
}
.identity-photo {
  position: relative;
  align-self: stretch;
  min-height: 400px;
  margin: 0;
  overflow: hidden;
  background: var(--accent-soft);
}
.identity-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(23, 32, 29, .14);
  pointer-events: none;
}
.identity-photo img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: 46% 72%;
  transform: scale(1.6);
  transform-origin: 46% 88%;
  filter: saturate(.8) contrast(1.03);
}
.eyebrow {
  margin: 0 0 24px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}
h1, h2 { font-family: var(--serif); font-weight: 500; letter-spacing: -.04em; line-height: 1.05; }
h1 { max-width: 900px; margin: 0; font-size: clamp(52px, 6.4vw, 88px); }
.intro {
  max-width: 900px;
  margin: 24px 0 0;
  font: 500 clamp(24px, 3.2vw, 38px)/1.2 var(--serif);
  letter-spacing: -.025em;
}
.summary { max-width: 720px; margin: 24px 0 0; color: var(--muted); font-size: 18px; }
.hero-links { display: flex; gap: 12px; margin-top: 32px; }
.button {
  display: inline-block;
  padding: 12px 19px;
  border: 1px solid var(--ink);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}
.button.primary { color: var(--white); background: var(--ink); }
.button:hover { color: var(--white); background: var(--accent); border-color: var(--accent); }
.section {
  display: grid;
  grid-template-columns: minmax(240px, .8fr) minmax(0, 1.6fr);
  gap: 80px;
  padding: 100px 0;
  border-top: 1px solid var(--line);
}
.section-heading { align-self: start; }
.section-heading h2, .contact h2 {
  margin: 0;
  font-size: clamp(36px, 4.5vw, 62px);
}
.section-deck { margin: 26px 0 0; color: var(--muted); font-size: 15px; line-height: 1.65; }
.case-list { border-top: 1px solid var(--line); }
.case-study { display: grid; grid-template-columns: 64px 1fr; gap: 24px; padding: 48px 0; border-bottom: 1px solid var(--line); }
.case-number { padding-top: 4px; color: var(--muted); font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.case-kicker { margin: 0 0 8px; color: var(--accent); font-size: 13px; font-weight: 600; letter-spacing: .09em; text-transform: uppercase; }
.case-study h3 { margin: 0 0 20px; font: 600 29px/1.25 var(--serif); letter-spacing: -.02em; }
.case-study p:not(.case-kicker) { color: var(--muted); }
.case-summary h3 { margin-bottom: 12px; }
.impact-line, .case-study p.impact-line, .project-card > p.impact-line { margin: 16px 0; padding-left: 12px; border-left: 2px solid var(--accent); color: var(--ink); font-size: 15px; }
.case-link { display: inline-block; margin-top: 4px; color: var(--accent); font-size: 13px; font-weight: 600; text-decoration: none; }
.case-link:hover { text-decoration: underline; }
.case-link span { margin-left: 4px; }

.timeline { margin-top: 36px; border-top: 1px solid var(--line); }
.timeline article { display: grid; grid-template-columns: 170px 1fr; gap: 30px; padding: 29px 0; border-bottom: 1px solid var(--line); }
.timeline article > p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.timeline h3 { margin: 0 0 5px; font-size: 16px; }
.timeline span { color: var(--muted); font-size: 14px; }
.education-summary { margin-top: 58px; padding-top: 30px; border-top: 1px solid var(--line); }
.research-card { margin-top: 0; padding: 38px; border: 1px solid var(--line); background: rgba(255, 255, 255, .42); }
.research-card h3 { max-width: 670px; margin: 0 0 20px; font: 600 28px/1.3 var(--serif); }
.company-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 32px; }
h3, h4 { line-height: 1.35; }
.company-header h3 { margin: 0; font: 600 27px/1.3 var(--serif); }
.company-header p { margin: 6px 0 0; color: var(--muted); }
.company-tenure { white-space: nowrap; font-size: 14px; }
.role { display: grid; grid-template-columns: 210px 1fr; gap: 38px; padding: 44px 0; border-bottom: 1px solid var(--line); }

ul { margin: 0; padding-left: 20px; }
li { padding-left: 5px; margin-bottom: 13px; }
li::marker { color: var(--accent); }

.project-list { display: grid; gap: 24px; }
.project-card {
  padding: 34px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .42);
}
.project-topline { display: flex; justify-content: space-between; gap: 24px; margin-bottom: 22px; }
.project-topline p { margin: 0; color: var(--muted); font-size: 13px; letter-spacing: .05em; text-transform: uppercase; }
.project-card h3 { margin: 0; font: 600 29px/1.25 var(--serif); letter-spacing: -.015em; }
.project-card > p { color: var(--muted); }
.project-card .project-intro { margin: 12px 0 20px; color: var(--ink); font-size: 18px; line-height: 1.55; }
.project-details { margin: 24px 0; color: var(--muted); }
.project-details li { margin-bottom: 8px; }

.publication { margin-top: 42px; padding-top: 34px; border-top: 1px solid var(--line); }
.publication .publication-label {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.publication h4 { max-width: 670px; margin: 0 0 20px; font: 600 25px/1.35 var(--serif); }
.publication > p:not(.publication-label) { color: var(--muted); }
.publication .publication-meta { color: var(--ink); font-size: 13px; }
.publication-links { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 24px; }
.publication-links a { color: var(--accent); font-size: 14px; font-weight: 600; }

.contact { padding: 110px 0; border-top: 1px solid var(--line); }
.contact > p:not(.eyebrow) { max-width: 650px; margin: 25px 0 35px; color: var(--muted); font-size: 18px; }
.contact-links { display: flex; gap: 28px; }
.contact-links a { color: var(--accent); font-weight: 600; }
footer {
  display: flex;
  justify-content: space-between;
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
footer p { margin: 0; }

/* Long-form project reflections */
.article-page { width: min(820px, calc(100% - 64px)); }
.article-page > article { padding-bottom: 90px; }
.article-hero { padding: 92px 0 68px; border-bottom: 1px solid var(--line); }
.back-link { display: inline-block; margin-bottom: 54px; color: var(--muted); font-size: 13px; text-decoration: none; }
.back-link:hover { color: var(--accent); }
.article-hero h1 { max-width: 800px; font-size: clamp(48px, 7vw, 82px); }
.article-lede { max-width: 760px; margin: 28px 0 0; color: var(--muted); font: 500 clamp(19px, 2.4vw, 24px)/1.5 var(--serif); }
.article-lede + .article-lede { margin-top: 16px; }
.article-meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 46px 0 0; }
.article-meta div { padding-top: 14px; border-top: 1px solid var(--line); }
.article-meta dt { color: var(--muted); font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.article-meta dd { margin: 5px 0 0; font-size: 14px; }
.article-section { padding: 58px 0; border-bottom: 1px solid var(--line); }
.article-section h2 { margin: 0 0 24px; font-size: clamp(30px, 4vw, 43px); }
.article-section h3 { margin: 38px 0 10px; font: 600 21px/1.35 var(--serif); }
.article-section p, .article-section li { color: #46514d; font-size: 17px; }
.article-section a, .all-work a { color: var(--accent); text-decoration: underline; }
.article-section p { margin: 0 0 20px; }
.article-section p:last-child { margin-bottom: 0; }
.article-section li { margin-bottom: 10px; }
.article-section :not(pre) > code { overflow-wrap: anywhere; }
.article-section > p, .article-section > ul, .article-section > ol, .article-section > h3 { max-width: 68ch; }

.table-wrap { margin: 30px 0; overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 15px; font-variant-numeric: tabular-nums; }
.data-table caption { margin-bottom: 10px; color: var(--muted); font-size: 14px; text-align: left; }
.data-table th, .data-table td { padding: 10px 14px 10px 0; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
.data-table th { color: var(--muted); font-weight: 500; }
.data-table td { color: #46514d; }

.article-next { padding-top: 58px; }
.article-next a { display: block; font: 600 25px/1.3 var(--serif); text-decoration: none; }
.article-next span { display: block; margin-bottom: 8px; color: var(--muted); font: 600 13px/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; }
.article-next a:hover { color: var(--accent); }
.all-work { margin: 40px 0 0; font-size: 14px; font-weight: 600; }

.article-toc { margin: 40px 0 0; padding-top: 14px; border-top: 1px solid var(--line); font-size: 14px; }
.article-toc > p { margin: 0 0 10px; color: var(--muted); font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.article-toc ul { margin: 0; padding: 0; list-style: none; }
.article-toc li { margin: 0; padding: 0; }
.article-toc > nav > ul > li { margin-top: 6px; font-weight: 600; }
.article-toc li li { padding-left: 16px; font-weight: 400; }
.article-toc a { color: var(--accent); text-decoration: none; }
.article-toc a:hover { text-decoration: underline; }
.article-section h2, .article-section h3 { scroll-margin-top: 24px; }

@media (max-width: 820px) {
  .site-header, main, footer { width: min(100% - 36px, 1180px); }
  .article-page { width: min(100% - 36px, 820px); }
  .article-hero { padding: 65px 0 50px; }
  .article-meta { grid-template-columns: 1fr; gap: 16px; }
  .article-section { padding: 45px 0; }
  .site-header { height: auto; flex-wrap: wrap; gap: 10px 24px; padding: 20px 0; }
  nav { flex-wrap: wrap; gap: 8px 18px; }
  .hero { padding: 48px 0 48px; }
  .hero-layout { grid-template-columns: 1fr; }
  .identity-photo { width: min(100%, 460px); min-height: 380px; }
  .section { grid-template-columns: 1fr; gap: 48px; padding: 72px 0; }
  .role { grid-template-columns: 1fr; gap: 20px; }
  .project-card { padding: 26px; }
  .timeline article { grid-template-columns: 1fr; gap: 8px; }
}

@media (max-width: 620px) {
  .project-topline { display: block; }
  .project-topline .project-type { margin-top: 5px; }
}

@media (max-width: 520px) {
  h1 { font-size: 46px; }
  .intro { font-size: 25px; }
  .identity-photo { min-height: 0; height: 280px; }
  .company-header { flex-direction: column; gap: 6px; }
  .hero-links, .contact-links { flex-wrap: wrap; }
  .case-study { grid-template-columns: 1fr; gap: 10px; }
  .research-card { padding: 26px; }
  .data-table { font-size: 14px; }
  .data-table th, .data-table td { padding-right: 10px; white-space: normal; }
}

.katex-display { margin: 26px 0; overflow-x: auto; overflow-y: hidden; padding: 4px 0; }
.article-section .katex { color: var(--ink); }
.data-table .katex { white-space: nowrap; }
.compare-table { min-width: 640px; }
.compare-table th, .compare-table td { white-space: normal; vertical-align: top; }

.diagram { margin: 34px 0; overflow-x: auto; }
.diagram img { display: block; width: 100%; min-width: 600px; height: auto; border: 1px solid var(--line); }
.diagram figcaption { margin-top: 10px; color: var(--muted); font-size: 14px; }