:root {
  --sidebar: 248px;
  --ink: #24262d;
  --muted: #6c6f7d;
  --accent: #686b88;
  --accent-dark: #4f526f;
  --accent-soft: #eef0f7;
  --line: #dfe1e8;
  --paper: #ffffff;
  --wash: #f7f7fa;
  --shadow: 0 18px 55px rgba(45, 48, 69, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #272a44;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  transform: translateY(-150%);
  padding: 9px 12px;
  color: #fff;
  background: var(--accent-dark);
  border-radius: 4px;
}

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

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 20;
  display: flex;
  width: var(--sidebar);
  padding: 68px 32px 34px;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.97);
  border-right: 1px solid var(--line);
}

.site-name {
  padding-bottom: 24px;
  color: var(--accent);
  border-bottom: 1px solid #adb0be;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.sidebar nav {
  display: grid;
  gap: 8px;
  margin-top: 28px;
}

.sidebar nav a {
  padding: 7px 8px;
  color: #555864;
  border-left: 2px solid transparent;
  text-decoration: none;
}

.sidebar nav a:hover,
.sidebar nav a:focus-visible,
.sidebar nav a[aria-current="page"] {
  color: var(--accent-dark);
  border-left-color: var(--accent);
  background: var(--accent-soft);
}

.sidebar-links {
  display: flex;
  gap: 12px;
  margin-top: auto;
  font-size: 13px;
}

.mobile-header {
  display: none;
}

main {
  margin-left: var(--sidebar);
}

.page-width {
  width: min(1080px, calc(100% - 80px));
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: 310px;
  overflow: hidden;
  color: var(--accent-dark);
  background: var(--wash);
  border-bottom: 1px solid var(--line);
}

.hero-title {
  position: absolute;
  left: clamp(42px, 8vw, 115px);
  bottom: 46px;
}

.hero-title span {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(46px, 6vw, 78px);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1;
}

.home-grid {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(40px, 6vw, 72px);
  align-items: start;
  padding-top: 70px;
  padding-bottom: 92px;
}

.portrait-column {
  width: 220px;
}

.portrait {
  display: block;
  width: 220px;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  object-position: center;
  box-shadow: var(--shadow);
}

.contact-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 18px;
  font-size: 14px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.intro-column h2,
.section-heading h2,
.subsection-heading h2 {
  margin: 0;
  color: var(--accent-dark);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.12;
}

.lead {
  margin-top: 22px;
  font-size: 20px;
  line-height: 1.55;
}

.education-list {
  display: grid;
  gap: 0;
  margin-top: 36px;
  border-top: 1px solid var(--line);
}

.education-list article {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-header {
  padding: 64px 0 0;
  background: var(--wash);
  border-bottom: 1px solid var(--line);
}

.page-header .page-width {
  padding-bottom: 32px;
}

.page-header h1 {
  margin: 0;
  color: var(--accent-dark);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 400;
  letter-spacing: -0.03em;
}

.education-list h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.education-list .education-honor {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.education-list p,
.education-list time {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.education-list time {
  white-space: nowrap;
}

.content-section {
  padding: 94px 0 108px;
  scroll-margin-top: 24px;
}

#research {
  background: var(--wash);
}

.section-heading {
  max-width: 760px;
}

.interest-list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 34px 0 54px;
}

.interest-list span {
  padding: 8px 13px;
  color: var(--accent-dark);
  background: var(--accent-soft);
  border: 1px solid #d7d9e6;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.featured-work {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 44px;
  align-items: center;
  padding: 44px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 13px 40px rgba(45, 48, 69, 0.07);
}

.featured-work + .featured-work {
  margin-top: 28px;
}

.featured-work:not(:has(> img)) {
  grid-template-columns: 1fr;
}

.featured-work img {
  display: block;
  width: 100%;
  height: auto;
}

.work-meta {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.featured-work h3 {
  margin: 18px 0 10px;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(25px, 2.5vw, 35px);
  font-weight: 400;
  line-height: 1.24;
}

.authors {
  color: var(--muted);
  font-size: 14px;
}

.authors span {
  white-space: nowrap;
}

.featured-work ul {
  padding-left: 20px;
  color: #4e515d;
}

.button-row {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  padding: 9px 16px;
  color: #fff;
  background: var(--accent-dark);
  border: 1px solid var(--accent-dark);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
}

.button:hover {
  color: #fff;
  background: #373a55;
}

.pending-link {
  color: var(--muted);
  font-size: 13px;
}

.subsection-heading {
  margin-top: 84px;
}

.direction-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.direction-grid article {
  min-height: 245px;
  padding: 28px;
  background: #fff;
  border-top: 3px solid var(--accent);
}

.number {
  color: #a5a8b8;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
}

.direction-grid h3,
.topic-grid h3 {
  margin: 28px 0 11px;
  font-size: 18px;
  line-height: 1.35;
}

.direction-grid p,
.topic-grid p {
  margin: 0;
  color: #5a5d68;
  font-size: 14px;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 36px;
  margin-top: 58px;
  padding-top: 38px;
  border-top: 1px solid var(--line);
}

.topic-grid h3 {
  margin-top: 0;
}

.work-stack {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

.work-stack article,
.topic-stack article {
  padding: 0;
  background: transparent;
  border: 0;
}

.work-stack h3,
.topic-stack h3 {
  margin: 0 0 8px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
  font-weight: 400;
  line-height: 1.35;
}

.work-stack ul,
.topic-stack ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: #4e515d;
}

.work-stack li + li,
.topic-stack li + li {
  margin-top: 6px;
}

.topic-stack {
  display: grid;
  gap: 36px;
  margin-top: 28px;
}

.award-details {
  display: grid;
  gap: 4px;
  margin-top: 6px;
}

.inline-links {
  display: flex;
  gap: 10px;
  margin-top: 8px;
  font-size: 14px;
}

.inner-page .content-section {
  padding-top: 56px;
}

.inner-page .section-heading h2,
.inner-page .subsection-heading h2 {
  font-size: clamp(26px, 3vw, 36px);
}

.inner-page .experience-layout {
  margin-top: 0;
}

.experience-section {
  background: #fff;
}

.experience-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 64px;
  margin-top: 52px;
}

.list-title {
  margin: 0 0 18px;
  color: var(--accent-dark);
  font-size: 18px;
}

.timeline-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.timeline-list li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.timeline-list strong,
.timeline-list span {
  display: block;
}

.timeline-list strong {
  line-height: 1.4;
}

.timeline-list span,
.timeline-list time {
  color: var(--muted);
  font-size: 13px;
}

.timeline-list time {
  text-align: right;
  white-space: nowrap;
}

.community {
  margin-top: 64px;
}

.community-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.community-grid article {
  padding: 22px;
  background: var(--wash);
  border: 1px solid var(--line);
}

.community-grid strong,
.community-grid span {
  display: block;
}

.community-grid strong {
  line-height: 1.4;
}

.community-grid span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

footer {
  display: flex;
  gap: 30px;
  justify-content: space-between;
  align-items: center;
  padding: 38px clamp(32px, 6vw, 92px);
  color: #d9dbe6;
  background: #303342;
}

footer strong,
footer span {
  display: block;
}

footer span {
  margin-top: 3px;
  color: #b8bbc8;
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: #fff;
  font-size: 14px;
}

@media (max-width: 1040px) {
  :root {
    --sidebar: 210px;
  }

  .sidebar {
    padding-right: 24px;
    padding-left: 24px;
  }

  .site-name {
    font-size: 18px;
  }

  .featured-work {
    grid-template-columns: 1fr;
  }

  .direction-grid,
  .community-grid {
    grid-template-columns: 1fr;
  }

  .direction-grid article {
    min-height: 0;
  }
}

@media (max-width: 760px) {
  .sidebar {
    display: none;
  }

  .mobile-header {
    position: sticky;
    top: 0;
    z-index: 30;
    display: flex;
    gap: 20px;
    justify-content: space-between;
    align-items: center;
    min-height: 62px;
    padding: 0 20px;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(10px);
  }

  .mobile-header > a {
    color: var(--accent-dark);
    font-size: 14px;
    font-weight: 750;
    letter-spacing: 0.05em;
    text-decoration: none;
  }

  .mobile-header nav {
    display: flex;
    gap: 14px;
  }

  .mobile-header nav a {
    color: var(--muted);
    font-size: 12px;
    text-decoration: none;
  }

  .mobile-header nav a[aria-current="page"] {
    color: var(--accent-dark);
    font-weight: 650;
  }

  main {
    margin-left: 0;
  }

  .page-width {
    width: min(100% - 36px, 680px);
  }

  .hero {
    min-height: 260px;
  }

  .hero-title {
    left: 22px;
    bottom: 28px;
  }

  .hero-title span {
    font-size: 10px;
  }

  .home-grid {
    grid-template-columns: 1fr;
    gap: 42px;
    padding-top: 44px;
    padding-bottom: 68px;
  }

  .portrait-column {
    position: static;
    width: 180px;
    max-width: 180px;
    margin: 0 auto;
  }

  .portrait {
    width: 180px;
  }

  .lead {
    font-size: 18px;
  }

  .education-list article,
  .timeline-list li {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .education-list time,
  .timeline-list time {
    text-align: left;
  }

  .content-section {
    padding: 68px 0 78px;
    scroll-margin-top: 62px;
  }

  .featured-work {
    gap: 30px;
    padding: 26px 22px;
  }

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

  .direction-grid,
  .topic-grid,
  .experience-layout,
  .community-grid {
    grid-template-columns: 1fr;
  }

  .experience-layout {
    gap: 50px;
  }

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

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