:root {
  color-scheme: light;
  --background: #ffffff;
  --surface: #ffffff;
  --text: #222222;
  --muted: #666666;
  --line: #dddddd;
  --link: #0645ad;
  --image-bg: #ffffff;
  --code-bg: #f2f4f6;
  --shell: min(820px, calc(100% - 32px));
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --background: #18212b;
  --surface: #202c38;
  --text: #e8edf2;
  --muted: #aeb9c4;
  --line: #344250;
  --link: #8fb6e8;
  --image-bg: #f5f6f7;
  --code-bg: #111a24;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  transition: background-color 160ms ease, color 160ms ease;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img,
video {
  display: block;
  height: auto;
  max-width: 100%;
}

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

h1 {
  margin-bottom: 2px;
  font-size: 2.15rem;
  line-height: 1.15;
}

h2 {
  margin-bottom: 18px;
  font-size: 1.35rem;
  line-height: 1.25;
}

h3 {
  margin-bottom: 5px;
  font-size: 1rem;
  line-height: 1.35;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  padding: 6px 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  transform: translateY(-150%);
}

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

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  background: var(--background);
  border-bottom: 1px solid var(--line);
  transition: background-color 160ms ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  gap: 24px;
}

.header-name {
  color: var(--text);
  font-weight: bold;
}

.header-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.9rem;
}

.theme-toggle {
  display: inline-grid;
  width: 32px;
  height: 32px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--link);
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, transform 120ms ease;
}

.theme-toggle:hover {
  background: var(--code-bg);
  border-color: var(--link);
}

.theme-toggle:active {
  transform: translateY(1px);
}

.theme-icon {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.theme-icon-sun,
:root[data-theme="dark"] .theme-icon-moon {
  display: none;
}

:root[data-theme="dark"] .theme-icon-sun {
  display: block;
}

.hero {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 28px;
  align-items: start;
  padding-block: 54px 38px;
}

.portrait-wrap {
  margin: 0;
}

.portrait {
  width: 160px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center 30%;
}

.role {
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-summary,
.phd-note {
  max-width: 62ch;
  margin-bottom: 12px;
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 14px;
  margin-bottom: 0;
}

.focus-section,
.section,
.education-section,
.contact {
  padding-block: 34px;
  border-top: 1px solid var(--line);
}

.focus-grid {
  display: block;
  margin: 0;
  padding-left: 20px;
}

.focus-grid p {
  margin-bottom: 7px;
}

.focus-grid p::before {
  content: "• ";
  margin-left: -15px;
}

.section-heading {
  margin-bottom: 26px;
}

.section-heading p,
.teaching-grid > div:first-child p,
.contact p {
  max-width: 65ch;
  color: var(--muted);
}

.featured-project,
.project {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 22px;
  align-items: start;
  margin-bottom: 32px;
}

.project-pair {
  display: block;
}

.project-media,
.project-media img,
.project > img {
  width: 260px;
}

.project-media img,
.project > img {
  aspect-ratio: 13 / 8;
  object-fit: contain;
  border: 1px solid var(--line);
  background: var(--image-bg);
}

.project-body {
  padding-top: 0;
}

.project-meta {
  display: flex;
  gap: 12px;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.8rem;
}

.project-meta span + span::before {
  content: "· ";
}

.project-copy p,
.project-body > p {
  margin-bottom: 10px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 12px;
  margin: 10px 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.82rem;
  list-style: none;
}

.tag-list li + li::before {
  content: "· ";
}

.timeline-date,
.article-meta {
  color: var(--muted);
  font-size: 0.8rem;
}

.blog-preview {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 22px;
  align-items: start;
}

.blog-preview-image img {
  width: 190px;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--image-bg);
}

.blog-preview h3 {
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.blog-preview p {
  margin-bottom: 8px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 18px;
  padding-bottom: 24px;
}

.timeline-item p {
  max-width: 65ch;
  margin-bottom: 7px;
}

.institution {
  color: var(--muted);
  font-size: 0.9rem;
}

.education-section {
  background: var(--surface);
}

.education-grid,
.teaching-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.degree {
  margin: 0 0 3px;
  font-weight: bold;
}

.recognition-list p,
.teaching-item {
  margin-bottom: 18px;
}

.recognition-photo {
  margin: 0 0 18px;
}

.recognition-photo img {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: 8px;
  border: 1px solid var(--line);
  background: var(--image-bg);
}

.recognition-photo figcaption {
  color: var(--text);
}

.teaching-item p {
  margin-bottom: 6px;
}

.contact {
  display: block;
}

.contact-email {
  overflow-wrap: anywhere;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-block: 24px 40px;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

.footer p {
  margin-bottom: 0;
}

.footer-links {
  display: flex;
  gap: 14px;
}

.case-study {
  padding-block: 36px 18px;
}

.back-link {
  display: inline-block;
  margin-bottom: 30px;
  font-size: 0.9rem;
}

.case-header {
  margin-bottom: 30px;
}

.case-header h1 {
  max-width: 19ch;
  margin-bottom: 12px;
}

.case-meta,
.case-award,
.case-figure figcaption {
  color: var(--muted);
  font-size: 0.85rem;
}

.case-lead {
  max-width: 65ch;
  margin-bottom: 12px;
  font-size: 1.08rem;
}

.case-figure {
  margin: 24px 0 8px;
}

.case-figure img {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--image-bg);
}

.case-figure-hero img {
  object-fit: contain;
}

.case-figure figcaption {
  margin-top: 6px;
}

.case-section {
  padding-block: 30px;
  border-top: 1px solid var(--line);
}

.case-section > p,
.case-section > ul {
  max-width: 68ch;
}

.case-section li {
  margin-bottom: 6px;
}

.project-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 30px;
  margin: 24px 0 0;
}

.project-facts div {
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.project-facts dt {
  color: var(--muted);
  font-size: 0.8rem;
}

.project-facts dd {
  margin: 2px 0 0;
}

.case-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  margin-bottom: 18px;
}

.case-columns ul {
  margin-bottom: 0;
  padding-left: 20px;
}

.case-outcome {
  padding-bottom: 10px;
}

.article {
  padding-block: 36px 20px;
}

.article-header {
  margin-bottom: 28px;
}

.article-header h1 {
  max-width: 24ch;
  margin-bottom: 10px;
}

.article-subtitle {
  max-width: 62ch;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 1.08rem;
}

.article-hero,
.article-figure {
  margin: 24px 0 32px;
}

.article-hero img,
.article-figure img {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--image-bg);
}

.article-hero figcaption,
.article-figure figcaption {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.8rem;
}

.article-content {
  max-width: 68ch;
}

.article-content section {
  padding-block: 28px;
  border-top: 1px solid var(--line);
}

.article-content h2 {
  margin-bottom: 12px;
}

.article-content h3 {
  margin-top: 22px;
  font-size: 1rem;
}

.article-content li {
  margin-bottom: 6px;
}

.article-content pre {
  overflow-x: auto;
  margin: 18px 0 24px;
  padding: 16px;
  background: var(--code-bg);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.55;
  tab-size: 2;
}

.article-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.article-content :not(pre) > code {
  padding: 0.08em 0.28em;
  background: var(--code-bg);
}

.benchmark-grid {
  display: grid;
  gap: 24px;
  margin-top: 20px;
}

:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
}

@media (max-width: 620px) {
  html {
    scroll-padding-top: 104px;
  }

  .header-inner {
    position: relative;
    display: block;
    padding-block: 12px;
  }

  .header-name {
    display: block;
    margin-bottom: 6px;
  }

  .header-links {
    gap: 14px;
  }

  .theme-toggle {
    position: absolute;
    top: 10px;
    right: 0;
  }

  .hero {
    grid-template-columns: 104px 1fr;
    gap: 18px;
    padding-block: 34px 28px;
  }

  .portrait {
    width: 104px;
  }

  h1 {
    font-size: 1.8rem;
  }

  .featured-project,
  .project,
  .blog-preview,
  .education-grid,
  .teaching-grid {
    grid-template-columns: 1fr;
  }

  .project-media,
  .project-media img,
  .project > img,
  .blog-preview-image img {
    width: min(100%, 360px);
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .project-facts,
  .case-columns {
    grid-template-columns: 1fr;
  }

  .case-study {
    padding-top: 28px;
  }

  .footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  body {
    transition: none;
  }

  .site-header,
  .theme-toggle {
    transition: none;
  }
}