:root {
  --ink: #172126;
  --muted: #586970;
  --teal: #2c6d72;
  --teal-dark: #1f5055;
  --teal-light: #e8f2f2;
  --lavender: #6c5ce7;
  --lavender-light: #f3f0fc;
  --paper: #fbfcfb;
  --line: #cbd7d9;
  --max: 1180px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 84% 6%, rgba(108, 92, 231, 0.08), transparent 25rem),
    linear-gradient(180deg, #fff 0, var(--paper) 42rem);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--teal-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover { color: var(--lavender); }

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.5rem;
  left: 0.5rem;
  padding: 0.6rem 0.8rem;
  color: #fff;
  background: var(--ink);
  transform: translateY(-200%);
}

.skip-link:focus { transform: translateY(0); }

.site-header,
main,
.site-footer {
  width: min(calc(100% - 2.5rem), var(--max));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.identity {
  display: flex;
  flex-direction: column;
  color: inherit;
  text-decoration: none;
}

.identity-name {
  color: var(--teal);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.identity-role {
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  justify-content: flex-end;
}

nav a {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
}

.hero {
  min-height: 35rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5rem 0 4rem;
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--lavender);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }

h1, h2, h3 {
  line-height: 1.04;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 930px;
  margin-bottom: 1.5rem;
  color: var(--teal);
  font-size: clamp(3.2rem, 8vw, 7.6rem);
}

h1 span { color: var(--ink); }

h2 {
  max-width: 820px;
  margin-bottom: 1rem;
  color: var(--teal);
  font-size: clamp(2.1rem, 4vw, 4.4rem);
}

h3 {
  color: var(--ink);
  font-size: 1.35rem;
}

.hero-copy {
  max-width: 760px;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 0.2rem;
  color: var(--teal);
  background: #fff;
  font-weight: 800;
  text-decoration: none;
}

.button:hover {
  border-color: var(--lavender);
  color: var(--lavender);
}

.button.primary {
  border-color: var(--teal);
  color: #fff;
  background: var(--teal);
}

.button.primary:hover { background: var(--teal-dark); }

.metrics {
  padding: 1.2rem 0;
  border-top: 4px solid var(--teal);
  border-bottom: 1px solid var(--line);
}

.metrics ul {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.metrics li {
  display: flex;
  min-height: 8rem;
  flex-direction: column;
  justify-content: space-between;
  padding: 1rem 1.2rem;
  border-right: 1px solid var(--line);
}

.metrics li:last-child { border-right: 0; }

.metrics strong {
  color: var(--lavender);
  font-size: clamp(1.55rem, 3vw, 2.55rem);
  letter-spacing: -0.04em;
}

.metrics span {
  max-width: 13rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.section { padding: 7rem 0; }

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(15rem, 1fr);
  gap: 3rem;
  align-items: end;
  margin-bottom: 3rem;
}

.section-heading .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: -1.5rem;
}

.section-heading h2 { margin-bottom: 0; }

.section-heading > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.capability-grid article {
  min-height: 14rem;
  padding: 1.4rem;
  border-top: 3px solid var(--lavender);
  background: var(--lavender-light);
}

.capability-grid p {
  color: var(--muted);
  font-size: 0.92rem;
}

.work-section {
  position: relative;
}

.project-list {
  display: grid;
  gap: 1.1rem;
}

.project-card {
  display: grid;
  grid-template-columns: 1.15fr 1.15fr 1fr;
  gap: 1.5rem 2.5rem;
  padding: 2rem;
  border: 1px solid var(--line);
  border-left: 6px solid var(--teal);
  background: #fff;
}

.project-card .eyebrow,
.project-card h3 {
  grid-column: 1;
}

.project-card h3 {
  margin: -0.7rem 0 0;
  color: var(--teal);
  font-size: 1.9rem;
}

.project-summary {
  grid-column: 2;
  grid-row: 1 / span 2;
  color: var(--muted);
  font-size: 1.02rem;
}

.project-card dl {
  grid-column: 1;
  margin: 0;
}

.project-card dt {
  margin-bottom: 0.2rem;
  color: var(--lavender);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.project-card dd {
  margin: 0;
  font-size: 0.9rem;
}

.project-card ul {
  grid-column: 3;
  grid-row: 1 / span 3;
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.project-card li { margin-bottom: 0.55rem; }

.project-card li::marker { color: var(--lavender); }

.project-links {
  grid-column: 2;
  align-self: end;
}

.text-link {
  font-size: 0.85rem;
  font-weight: 800;
}

.boundary {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}

.boundary strong { color: var(--teal); }

.method-section {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  padding-inline: max(1.25rem, calc((100vw - var(--max)) / 2));
  color: #fff;
  background: var(--ink);
}

.method-section h2 { color: #fff; }

.method-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.method-list li {
  padding: 1.3rem;
  border-top: 3px solid var(--lavender);
  background: rgba(255, 255, 255, 0.04);
}

.method-list > li > span {
  display: block;
  margin-bottom: 2.5rem;
  color: var(--lavender);
  font-size: 0.8rem;
  font-weight: 800;
}

.method-list h3 { color: #fff; }

.method-list p {
  margin: 0;
  color: #c4d0d3;
  font-size: 0.88rem;
}

.experience-list { border-top: 1px solid var(--line); }

.experience-item {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2rem;
  padding: 1.7rem 0;
  border-bottom: 1px solid var(--line);
}

.experience-item h3 { margin-bottom: 0.3rem; }

.period {
  margin-bottom: 0.35rem;
  color: var(--lavender);
  font-size: 0.76rem;
  font-weight: 800;
}

.organization {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.experience-item > p {
  margin: 0;
  color: var(--muted);
}

.contact-band,
.machine-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin: 3rem 0 6rem;
  padding: 2.2rem;
  color: #fff;
  background: var(--teal);
}

.contact-band .eyebrow,
.machine-band .eyebrow { color: #c7c1ff; }
.contact-band h2,
.machine-band h2 { margin: 0; color: #fff; }
.button.light { color: var(--teal); background: #fff; }

.page-intro {
  max-width: 960px;
  padding: 6rem 0 4rem;
}

.page-intro h1 {
  margin-bottom: 1.2rem;
  font-size: clamp(3rem, 7vw, 6rem);
}

.page-intro > p:not(.eyebrow) {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.2rem;
}

.evidence-section {
  padding-top: 1rem;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 0.8rem;
}

th, td {
  padding: 1rem;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

thead th {
  color: #fff;
  background: var(--teal);
}

tbody th {
  min-width: 12rem;
  color: var(--teal);
}

td ul { margin: 0; padding-left: 1rem; }

.machine-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.machine-links a {
  padding: 0.55rem 0.7rem;
  color: var(--teal);
  background: #fff;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
}

.resume-layout {
  display: grid;
  grid-template-columns: minmax(14rem, 0.7fr) minmax(0, 1.6fr);
  gap: 4rem;
  padding-bottom: 6rem;
}

.resume-layout h2 {
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
  font-size: 1.5rem;
}

.resume-skills,
.education-list,
.publication-list {
  margin: 0 0 2.5rem;
  padding: 0;
  list-style: none;
}

.resume-skills li,
.education-list li,
.publication-list li {
  margin-bottom: 1rem;
}

.resume-skills strong,
.education-list strong,
.publication-list strong {
  display: block;
  color: var(--teal);
}

.education-list span,
.publication-list span {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
}

.resume-role {
  margin-bottom: 1.7rem;
  padding-bottom: 1.7rem;
  border-bottom: 1px solid var(--line);
}

.resume-role header {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
}

.resume-role h3 { margin-bottom: 0.3rem; }
.resume-role header p,
.resume-role > p { margin: 0; color: var(--muted); }
.resume-role header strong { color: var(--lavender); white-space: nowrap; }

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem 2rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

.site-footer strong,
.site-footer span { display: block; }
.site-footer strong { color: var(--teal); }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; }
.build-note { grid-column: 1 / -1; margin: 0; font-size: 0.72rem; }

@media (max-width: 850px) {
  .section-heading,
  .project-card,
  .experience-item,
  .resume-layout {
    grid-template-columns: 1fr;
  }

  .section-heading .eyebrow { margin-bottom: -1rem; }
  .project-card > * { grid-column: 1 !important; grid-row: auto !important; }
  .capability-grid,
  .method-list,
  .metrics ul { grid-template-columns: repeat(2, 1fr); }
  .project-card ul { padding-left: 1.2rem; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .site-header { align-items: flex-start; }
  nav { display: none; }
  .hero { min-height: auto; padding: 4rem 0; }
  h1 { font-size: 3.2rem; }
  .metrics ul,
  .capability-grid,
  .method-list { grid-template-columns: 1fr; }
  .metrics li { min-height: 6rem; border-right: 0; border-bottom: 1px solid var(--line); }
  .section { padding: 4.5rem 0; }
  .contact-band,
  .machine-band,
  .site-footer { align-items: flex-start; flex-direction: column; display: flex; }
  .resume-role header { flex-direction: column; gap: 0.3rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

@media print {
  body { background: #fff; font-size: 10pt; }
  .site-header nav, .hero-actions, .contact-band, .site-footer { display: none; }
  .section { padding: 1rem 0; }
  a { color: inherit; text-decoration: none; }
}