:root {
  color-scheme: light;

  --color-ink: #111b24;
  --color-navy: #12212b;
  --color-navy-deep: #0d1921;
  --color-ivory: #f4f0e8;
  --color-paper: #faf8f3;
  --color-paper-muted: #eee9e0;
  --color-stone: #8b8a85;
  --color-stone-light: #d8d3ca;
  --color-rule: rgba(17, 27, 36, 0.16);
  --color-white: #ffffff;
  --color-focus: #9e6d2f;
  --color-muted: #2c3a44;
  --color-sidebar-muted: #e4ddd2;

  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
               "Segoe UI", Helvetica, Arial, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.125rem;
  --text-lg: clamp(1.25rem, 1.7vw, 1.625rem);
  --text-xl: clamp(1.75rem, 2.4vw, 2.5rem);
  --text-hero: clamp(2.75rem, 4.8vw, 5.25rem);

  --leading-tight: 0.92;
  --leading-heading: 1.08;
  --leading-body: 1.55;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  --sidebar-width: clamp(17.5rem, 20.75vw, 20rem);
  --topbar-height: 5rem;
  --content-max: 90rem;
  --reading-width: 72ch;

  --border-hairline: 1px solid var(--color-rule);
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --shadow-subtle: 0 10px 30px rgba(13, 25, 33, 0.08);
  --transition-fast: 150ms ease;
  --transition-base: 240ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

p,
h1,
h2,
h3,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: 0;
  transform: translateY(-120%);
  z-index: 30;
  background: var(--color-ivory);
  color: var(--color-ink);
  padding: var(--space-3) var(--space-4);
  text-decoration: none;
}

.skip-link:focus {
  transform: none;
  top: var(--space-3);
}

:focus {
  outline: none;
}

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

.profile-sidebar :focus-visible,
.topbar :focus-visible {
  outline-color: var(--color-ivory);
}

.site-shell {
  display: flex;
  align-items: stretch;
  min-height: 100vh;
}

.profile-sidebar {
  position: sticky;
  top: 0;
  flex: 0 0 var(--sidebar-width);
  width: var(--sidebar-width);
  height: 100vh;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding: var(--space-6) var(--space-5) var(--space-6);
  background: var(--color-navy);
  color: var(--color-ivory);
}

.identity-lockup {
  margin: 0;
}

.identity-name {
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.portrait-frame {
  margin: 0;
}

.portrait-frame img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: center 22%;
  border-radius: 0.45rem;
  background: var(--color-navy-deep);
}

.contact-list {
  list-style: none;
  display: grid;
  gap: 0;
  margin-top: var(--space-2);
  border-top: 1px solid rgba(244, 240, 232, 0.28);
  font-size: var(--text-sm);
  line-height: 1.4;
}

.contact-list li {
  display: grid;
  grid-template-columns: 1.25rem minmax(0, 1fr);
  gap: var(--space-3);
  align-items: center;
  min-height: 3.25rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid rgba(244, 240, 232, 0.28);
}

.contact-list a,
.contact-list span {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
}

.contact-list a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  overflow-wrap: anywhere;
}

.contact-list .linkedin-link {
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: var(--text-xs);
  text-decoration: none;
}

.icon {
  width: 1.15rem;
  height: 1.15rem;
  flex: 0 0 auto;
  margin-top: 0;
}

.sidebar-divider {
  height: 1px;
  background: rgba(244, 240, 232, 0.28);
}

.sidebar-statement {
  margin-top: auto;
  font-family: var(--font-serif);
  font-size: var(--text-md);
  line-height: var(--leading-heading);
  letter-spacing: 0.01em;
}

.sidebar-footer {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-sidebar-muted);
}

.main-column {
  flex: 1 1 auto;
  min-width: 0;
  background: var(--color-paper);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: var(--topbar-height);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: var(--color-navy-deep);
  color: var(--color-ivory);
}

.mobile-brand,
.nav-toggle {
  display: none;
}

.primary-navigation ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-4);
}

.primary-navigation a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0 var(--space-1);
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.primary-navigation a:hover,
.primary-navigation a:focus-visible {
  border-bottom-color: var(--color-ivory);
}

.topbar-download {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 2.75rem;
  padding: 0 var(--space-4);
  border: 1px solid rgba(244, 240, 232, 0.55);
  border-radius: 999px;
  color: var(--color-ivory);
  font-size: var(--text-sm);
  text-decoration: none;
  white-space: nowrap;
}

.topbar-download .icon {
  margin-top: 0;
}

.hero {
  position: relative;
  min-height: 0;
  background: var(--color-paper);
  overflow: hidden;
}

.hero-copy {
  position: absolute;
  z-index: 1;
  top: 0;
  bottom: 0;
  left: 0;
  width: min(42rem, 62%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-6);
}

.eyebrow {
  margin-bottom: var(--space-4);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: var(--text-hero);
  font-weight: 500;
  font-optical-sizing: auto;
  line-height: 0.96;
  letter-spacing: -0.035em;
  text-transform: uppercase;
}

.hero-status {
  margin-top: var(--space-5);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.hero-program {
  margin-top: var(--space-2);
  max-width: 34ch;
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
}

.hero-institution {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  width: 100%;
  margin-top: var(--space-6);
}

.hero-actions .button-primary,
.hero-actions .button-secondary {
  flex: 1 1 9rem;
  height: 2.75rem;
  min-height: 2.75rem;
  max-height: 2.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 2.75rem;
  padding: 0 var(--space-5);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: transform 120ms ease-out, background-color 120ms ease-out;
}

.button .icon {
  margin-top: 0;
}

.button-primary {
  background: var(--color-navy);
  color: var(--color-ivory);
  border: 1px solid var(--color-navy);
}

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

.button-secondary {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid rgba(17, 27, 36, 0.45);
}

.button-secondary:hover {
  background: rgba(17, 27, 36, 0.04);
}

.button-linkedin {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid rgba(17, 27, 36, 0.28);
  border-radius: 999px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: var(--text-xs);
}

.button-linkedin:hover {
  background: #e6eef3;
  border-color: rgba(18, 33, 43, 0.45);
}

@media (min-width: 768px) {
  .hero .button-linkedin {
    display: none;
  }
}

.button:active {
  transform: scale(0.98);
}

.hero-decoration {
  position: relative;
  width: 100%;
  margin: 0;
  padding: 0;
  pointer-events: none;
}

.hero-decoration img {
  display: block;
  width: 100%;
  height: auto;
  max-width: none;
  max-height: none;
  -webkit-mask-image: linear-gradient(to bottom, #000 64%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 64%, transparent 100%);
}

.hero-portrait {
  display: none;
  margin: 0;
}

.section-jumps {
  display: none;
}

.expertise-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: var(--color-paper);
  border-bottom: var(--border-hairline);
}

.expertise-strip article {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-height: 7.5rem;
  padding: var(--space-5) var(--space-5);
  border-right: var(--border-hairline);
  background: transparent;
  transition: background-color 120ms ease-out;
}

.expertise-strip article:hover,
.expertise-strip article:focus-within {
  background: #e6eef3;
}

.expertise-strip article:last-child {
  border-right: 0;
}

.expertise-strip .icon {
  width: 1.35rem;
  height: 1.35rem;
  margin-top: 0;
}

.expertise-strip p {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.35;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(18rem, 1fr);
  align-items: stretch;
}

.content-primary,
.content-secondary {
  padding: var(--space-7) var(--space-6) var(--space-8);
}

.content-secondary {
  display: flex;
  flex-direction: column;
}

.content-secondary .teaching-entry {
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.column-mark {
  margin-top: auto;
  padding-top: var(--space-8);
  color: var(--color-ink);
  opacity: 0.28;
}

.column-mark svg {
  display: block;
  width: 4.25rem;
  height: auto;
}

.content-primary {
  border-right: var(--border-hairline);
}

.content-primary section + section,
.content-secondary section + section {
  margin-top: var(--space-8);
}

.content-secondary .section-heading h2 {
  font-size: clamp(1.45rem, 1.6vw, 1.85rem);
}

.content-secondary .section-heading h2::before {
  width: 1.75rem;
}

.section-heading {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.section-index {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-muted);
}

.section-heading h2 {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 500;
  font-optical-sizing: auto;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.section-heading h2::before {
  content: "";
  display: inline-block;
  width: 2.5rem;
  height: 1px;
  margin-right: var(--space-4);
  vertical-align: middle;
  background: var(--color-ink);
}

#education,
#experience,
#teaching,
#research,
#languages-tools,
#societies,
#contact,
#home {
  scroll-margin-top: calc(var(--topbar-height) + var(--space-4));
}

.timeline {
  list-style: none;
}

.timeline li,
.teaching-entry {
  display: grid;
  grid-template-columns: 7.25rem minmax(0, 1fr);
  gap: var(--space-4) var(--space-5);
  padding: var(--space-5) 0;
  border-top: var(--border-hairline);
}

.entry-date {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.entry-body h3 {
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.35;
}

.entry-org {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.entry-body p + p {
  margin-top: var(--space-3);
}

.entry-body p:not(.entry-org) {
  max-width: var(--reading-width);
}

.course-list,
.split-lists ul,
.society-list {
  list-style: none;
}

.course-list {
  margin-top: var(--space-4);
  display: grid;
  gap: var(--space-3);
}

.course-list li {
  position: relative;
  padding-left: var(--space-4);
}

.course-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--color-ink);
}

.chip-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip-list li {
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  line-height: 1.3;
}

.split-lists {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.split-lists h3,
.content-secondary .entry-date {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.split-lists ul {
  display: grid;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.tool-note {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
}

.society-list {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-3);
  font-size: var(--text-sm);
}

.site-footer {
  padding: var(--space-5) var(--space-6);
  border-top: var(--border-hairline);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

@media (max-width: 1099px) {
  .site-shell {
    display: block;
  }

  .profile-sidebar {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    display: grid;
    grid-template-columns: 9.5rem minmax(0, 1fr);
    grid-template-areas:
      "lockup lockup"
      "portrait contact"
      "statement statement"
      "footer footer";
    column-gap: var(--space-5);
    align-items: start;
    padding: var(--space-5) var(--space-6);
  }

  .identity-lockup { grid-area: lockup; }
  .portrait-frame { grid-area: portrait; }
  .contact-details { grid-area: contact; }
  .sidebar-divider { display: none; }
  .sidebar-statement {
    grid-area: statement;
    margin-top: 0;
  }
  .sidebar-footer {
    grid-area: footer;
    margin-top: 0;
    padding-top: 0;
  }

  .portrait-frame img {
    max-height: 16rem;
  }

  .topbar {
    flex-wrap: wrap;
    row-gap: 0;
  }

  .primary-navigation {
    flex: 1 1 auto;
    min-width: 0;
  }

  .primary-navigation ul {
    flex-wrap: nowrap;
    gap: 0 0.7rem;
  }

  .primary-navigation a {
    font-size: 0.8125rem;
    white-space: nowrap;
  }

  .topbar-download {
    margin-left: auto;
    flex: 0 0 auto;
  }

  .hero-copy {
    position: relative;
    top: auto;
    bottom: auto;
    width: auto;
    display: block;
  }

  .hero-decoration {
    width: 100%;
    margin: 0;
  }

  .hero-program {
    max-width: 36ch;
  }

  .expertise-strip {
    grid-template-columns: 1fr 1fr;
  }

  .expertise-strip article:nth-of-type(2n) {
    border-right: 0;
  }

  .expertise-strip article:nth-of-type(-n + 2) {
    border-bottom: var(--border-hairline);
  }

  .content-layout {
    grid-template-columns: 1fr;
  }

  .content-primary {
    border-right: 0;
    border-bottom: var(--border-hairline);
  }
}

@media (max-width: 767px) {
  .site-shell {
    display: flex;
    flex-direction: column;
  }

  .main-column {
    display: contents;
  }

  .topbar {
    order: 1;
  }

  main {
    order: 2;
  }

  .profile-sidebar {
    order: 3;
  }

  .site-footer {
    order: 4;
  }

  .hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 7.5rem;
    grid-template-areas:
      "intro portrait"
      "actions actions";
    align-items: center;
    column-gap: var(--space-4);
    row-gap: var(--space-5);
    overflow: visible;
    padding: var(--space-5) 1.25rem var(--space-6);
  }

  .hero-copy {
    display: contents;
  }

  .hero-intro,
  .hero-actions,
  .hero-portrait {
    position: relative;
    z-index: 1;
  }

  .hero-intro {
    grid-area: intro;
    min-width: 0;
  }

  .hero-portrait {
    display: block;
    grid-area: portrait;
    width: 7.5rem;
    justify-self: end;
  }

  .hero-portrait img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    object-position: center 18%;
    border-radius: 0.7rem;
  }

  .profile-sidebar .portrait-frame {
    display: none;
  }

  .hero h1 {
    font-size: clamp(1.85rem, 8vw, 2.45rem);
  }

  .hero-actions {
    grid-area: actions;
    margin-top: 0;
    z-index: 3;
  }

  .nav-toggle,
  .js .nav-toggle,
  .js .primary-navigation {
    display: none;
  }

  .hero-decoration {
    position: relative;
    grid-area: dome;
    right: auto;
    bottom: auto;
    width: auto;
    height: 11rem;
    margin: -0.7rem -1.25rem -1.6rem;
    z-index: 2;
    pointer-events: none;
  }

  .hero {
    grid-template-areas:
      "intro portrait"
      "actions actions"
      "dome dome";
  }

  .hero-decoration img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 72% 46%;
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 8%, #000 72%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, #000 8%, #000 72%, transparent 100%);
    -webkit-mask-composite: source-over;
    mask-composite: add;
  }

  .expertise-strip {
    position: relative;
    z-index: 1;
    margin-inline: 1.25rem;
    border: var(--border-hairline);
  }

  .expertise-strip article {
    min-height: 0;
    padding: var(--space-3) var(--space-3);
    gap: var(--space-2);
  }

  .section-jumps {
    display: block;
    margin: var(--space-5) 1.25rem var(--space-2);
  }

  .section-jumps-label {
    margin: 0 0 var(--space-3);
    font-size: var(--text-xs);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-muted);
  }

  .section-jumps ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    border: var(--border-hairline);
    border-radius: 0.7rem;
    overflow: hidden;
    background: var(--color-paper);
  }

  .section-jumps a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 2.75rem;
    padding: 0 var(--space-4);
    border-bottom: var(--border-hairline);
    font-size: var(--text-sm);
    text-decoration: none;
  }

  .section-jumps li:last-child a {
    border-bottom: 0;
  }

  .section-jumps a::after {
    content: "";
    width: 0.4rem;
    height: 0.4rem;
    border-top: 1.5px solid currentColor;
    border-right: 1.5px solid currentColor;
    transform: rotate(45deg);
    opacity: 0.4;
    flex: 0 0 auto;
  }

  .section-jumps li:nth-child(1) a { background: #f7f4ee; }
  .section-jumps li:nth-child(2) a { background: #e7eef3; }
  .section-jumps li:nth-child(3) a { background: #f3efe6; }
  .section-jumps li:nth-child(4) a { background: #e9eef2; }
  .section-jumps li:nth-child(5) a { background: #faf8f3; }
  .section-jumps li:nth-child(6) a { background: #e4ebf0; }

  .section-jumps a:hover,
  .section-jumps a:focus-visible,
  .section-jumps a:active {
    filter: brightness(0.96);
  }

  .profile-sidebar {
    grid-template-columns: 1fr;
    grid-template-areas:
      "lockup"
      "portrait"
      "contact"
      "statement"
      "footer";
    padding: var(--space-5) 1.25rem;
  }

  .portrait-frame {
    max-width: 16rem;
  }

  .topbar {
    flex-wrap: wrap;
    padding: var(--space-3) 1.25rem;
  }

  .mobile-brand {
    display: block;
    margin: 0;
    font-size: var(--text-xs);
    letter-spacing: 0.16em;
    text-transform: uppercase;
  }

  .js .nav-toggle,
  .js .primary-navigation {
    display: none;
    align-items: center;
    justify-content: center;
    min-width: 2.75rem;
    min-height: 2.75rem;
    margin-left: auto;
    padding: 0 var(--space-3);
    border: 1px solid rgba(244, 240, 232, 0.55);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-ivory);
    font: inherit;
    font-size: var(--text-sm);
  }

  .js .topbar-download {
    margin-left: 0;
  }

  .js .primary-navigation {
    display: none;
    flex-basis: 100%;
    order: 3;
  }

  .js .primary-navigation.is-open {
    display: block;
  }

  .primary-navigation ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .primary-navigation a {
    min-height: 2.75rem;
    padding: var(--space-2) 0;
  }

  .content-primary,
  .content-secondary,
  .site-footer {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .button {
    flex: 0 0 auto;
    width: 100%;
    height: 2.75rem;
    min-height: 2.75rem;
    max-height: 2.75rem;
  }

  .button-secondary {
    background: var(--color-paper);
  }

  .button-linkedin {
    background: linear-gradient(to bottom, var(--color-paper) 68%, rgba(250, 248, 243, 0.15));
  }

  .timeline li,
  .teaching-entry {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .split-lists {
    grid-template-columns: 1fr;
  }
}


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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .button:active {
    transform: none;
  }
}

@media (prefers-contrast: more) {
  :root {
    --color-rule: rgba(17, 27, 36, 0.45);
  }
}