:root {
  color-scheme: light;
  --ink: #1f2933;
  --muted: #5f6b76;
  --subtle: #7b8794;
  --paper: #fbfbf8;
  --panel: #ffffff;
  --soft: #f3f5f4;
  --line: #d9dfdc;
  --accent: #1f6f68;
  --accent-dark: #174f4b;
  --header-height: 68px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

body.nav-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1rem, 4vw, 3rem);
  color: var(--ink);
  background: rgba(251, 251, 248, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand,
.site-nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.65rem;
  font-weight: 700;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  overflow: hidden;
  background: var(--panel);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.site-nav {
  gap: clamp(1rem, 2.4vw, 1.8rem);
  font-size: 0.93rem;
}

.site-nav a {
  position: relative;
  padding: 0.35rem 0;
  color: var(--muted);
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 160ms ease;
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1rem;
  height: 2px;
  margin: 0.25rem auto;
  background: currentColor;
  transition:
    transform 160ms ease,
    opacity 160ms ease;
}

.site-header.nav-active .nav-toggle span:first-child {
  transform: translateY(3px) rotate(45deg);
}

.site-header.nav-active .nav-toggle span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

.hero {
  position: relative;
  width: 100%;
  margin: 0;
  padding: clamp(3.5rem, 7vw, 6rem) 0 clamp(3rem, 6vw, 5rem);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.2;
  background: url("1108905.jpg") center / cover no-repeat;
}

.hero-content {
  position: relative;
  width: min(1040px, calc(100% - clamp(2rem, 8vw, 6rem)));
  margin: 0 auto;
  padding-top: 0.35rem;
  display: grid;
  grid-template-columns: minmax(0, 680px) auto;
  align-items: start;
  justify-content: space-between;
  gap: clamp(1.5rem, 6vw, 5rem);
}

.hero-text {
  min-width: 0;
}

.profile-icon {
  width: clamp(7rem, 14vw, 9.5rem);
  height: clamp(7rem, 14vw, 9.5rem);
  justify-self: end;
  margin-top: 0.15rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  object-fit: cover;
}

.eyebrow,
.section-kicker,
.pub-type {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.eyebrow,
.section-kicker,
.pub-type {
  color: var(--accent);
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1,
h2,
h3 {
  line-height: 1.16;
  letter-spacing: 0;
}

h1 {
  margin: 0.4rem 0 0.25rem;
  font-size: clamp(1.175rem, 2.9vw, 2.25rem);
  font-weight: 760;
}

.hero-name {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35em;
  margin-bottom: 1rem;
}

h2 {
  margin: 0;
  font-size: clamp(1.55rem, 3.2vw, 2.45rem);
  font-weight: 720;
}

h3 {
  margin: 0;
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  font-weight: 720;
}

.hero-copy {
  width: min(680px, 100%);
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.16rem);
}

.ion-chain-wrap {
  position: relative;
  width: min(560px, 100%);
  margin-top: 1.5rem;
}

.ion-chain {
  width: 100%;
  image-rendering: pixelated;
  -webkit-mask-image:
    linear-gradient(90deg, transparent 0%, #000 14%, #000 86%, transparent 100%),
    linear-gradient(180deg, transparent 0%, #000 24%, #000 76%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(90deg, transparent 0%, #000 14%, #000 86%, transparent 100%),
    linear-gradient(180deg, transparent 0%, #000 24%, #000 76%, transparent 100%);
  mask-composite: intersect;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.button {
  min-height: 2.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.55rem 0.85rem;
  font-size: 0.94rem;
  font-weight: 650;
}

.button.primary {
  color: var(--accent-dark);
  border-color: var(--accent-dark);
  background: var(--panel);
}

.button.secondary {
  color: var(--accent-dark);
  background: var(--panel);
}

.button:hover,
.text-link:hover,
.contact-links a:hover {
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.section {
  padding: clamp(3.25rem, 7vw, 5.5rem) clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
}

.section-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.contact-layout,
.education-layout,
.skills-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(1.75rem, 6vw, 4.5rem);
}

.contact-layout {
  grid-template-columns: minmax(0, 0.72fr) minmax(18rem, 1fr) minmax(0, 0.6fr);
}

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

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

.education-item {
  display: grid;
  grid-template-columns: minmax(8rem, 0.32fr) minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2rem);
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.education-item time {
  color: var(--subtle);
  font-weight: 650;
}

.education-item p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.experience-section {
  background: var(--panel);
}

.section-kicker {
  margin-bottom: 0.55rem;
}

.skills-section {
  background: var(--paper);
}

.publication-section {
  color: var(--ink);
  background: var(--panel);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.section-heading h2 {
  max-width: 720px;
}

.text-link {
  flex: 0 0 auto;
  color: var(--accent-dark);
  font-weight: 650;
}

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

.publication {
  display: grid;
  grid-template-columns: 5.25rem minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2.2rem);
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.publication.featured {
  background: transparent;
}

.pub-year {
  color: var(--subtle);
  font-weight: 700;
}

.publication h3 {
  margin: 0.2rem 0 0.35rem;
}

.publication p {
  margin: 0;
  color: var(--muted);
}

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

.timeline-item {
  display: grid;
  grid-template-columns: minmax(10rem, 0.3fr) minmax(0, 1fr);
  gap: clamp(1rem, 4vw, 3rem);
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.timeline-item time {
  color: var(--subtle);
  font-weight: 650;
}

.timeline-item p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.skill-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.skill-columns div {
  border-top: 2px solid var(--line);
  padding-top: 0.9rem;
}

.skill-columns p {
  margin-bottom: 0;
  color: var(--muted);
}

.contact-section {
  background: var(--panel);
}

.contact-links {
  display: grid;
  align-content: start;
}

.contact-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3rem;
  border-bottom: 1px solid var(--line);
  color: var(--accent-dark);
  font-weight: 650;
}

.contact-links a:first-child {
  border-top: 1px solid var(--line);
}

.visitor-map {
  display: flex;
  justify-content: end;
  min-width: 0;
}

.visitor-map img,
.visitor-map iframe {
  max-width: 100%;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem clamp(1rem, 4vw, 3rem);
  color: var(--muted);
  background: var(--paper);
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--accent-dark);
}

@media (max-width: 840px) {
  .nav-toggle {
    display: block;
    z-index: 22;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-height) 0 auto 0;
    z-index: 21;
    display: grid;
    align-content: start;
    justify-items: start;
    gap: 0;
    padding: 0.5rem 1rem 1.25rem;
    color: var(--ink);
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    transform: translateY(calc(-100% - var(--header-height)));
    transition: transform 180ms ease;
  }

  .site-nav.is-open {
    transform: translateY(0);
  }

  .site-nav a {
    width: 100%;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
  }

  .site-nav a::after {
    display: none;
  }

  .contact-layout,
  .education-layout,
  .skills-layout,
  .skill-columns,
  .education-item,
  .timeline-item {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 2.5rem;
  }

  .hero-content {
    width: min(100% - 2rem, 840px);
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1.25rem;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
    gap: 0.85rem;
  }

  .publication {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}

@media (max-width: 520px) {
  :root {
    --header-height: 62px;
  }

  .site-header {
    padding-inline: 1rem;
  }

  .brand-mark {
    display: none;
  }

  h1 {
    font-size: clamp(1.125rem, 6vw, 1.55rem);
  }

  .profile-icon {
    width: 4.75rem;
    height: 4.75rem;
  }

  .button {
    width: 100%;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}