:root {
  --bg: #f6f7f9;
  --paper: #ffffff;
  --ink: #15171c;
  --muted: #5b6472;
  --line: #d9dee7;
  --teal: #0f766e;
  --red: #ad4d45;
  --gold: #9a6b12;
  --green-soft: #e8f2ef;
  --red-soft: #f7e9e7;
  --gold-soft: #f6efd9;
  --shadow: 0 18px 48px rgba(21, 23, 28, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, "Noto Sans", "Helvetica Neue", Arial, system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(15, 118, 110, 0.08) 0 1px, transparent 1px 100%),
    linear-gradient(0deg, rgba(173, 77, 69, 0.06) 0 1px, transparent 1px 100%);
  background-size: 64px 64px;
  opacity: 0.55;
}

body.lightbox-open {
  overflow: hidden;
}

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

.lead a,
.timeline a,
.news-list a {
  color: var(--teal);
  font-weight: 760;
  text-decoration: underline;
  text-decoration-color: rgba(15, 118, 110, 0.32);
  text-underline-offset: 3px;
}

.lead a:hover,
.lead a:focus-visible,
.timeline a:hover,
.timeline a:focus-visible,
.news-list a:hover,
.news-list a:focus-visible {
  color: #0a5d57;
  outline: none;
  text-decoration-color: currentColor;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1120px, calc(100% - 40px));
  min-height: 72px;
  margin: 18px auto 0;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(21, 23, 28, 0.07);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 850;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1rem;
  line-height: 1.2;
}

.brand small {
  color: var(--muted);
  font-size: 0.78rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

nav a {
  min-height: 36px;
  padding: 6px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.92rem;
  transition: background-color 160ms ease, color 160ms ease;
}

nav a:hover,
nav a:focus-visible {
  background: var(--green-soft);
  color: var(--teal);
  outline: none;
}

main {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.section-grid,
.content-section {
  border-bottom: 1px solid var(--line);
}

.hero {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 64px;
  align-items: start;
  min-height: auto;
  padding: 78px 0 64px;
}

.hero-copy {
  max-width: 880px;
}

.profile-card {
  position: sticky;
  top: 110px;
  padding: 0;
}

.profile-photo {
  display: block;
  width: 220px;
  max-width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--green-soft);
}

.profile-card h1 {
  margin: 16px 0 8px;
  font-size: 1.32rem;
  line-height: 1.25;
}

.profile-card h1 span {
  color: var(--ink);
  font-weight: 850;
}

.profile-role {
  margin-bottom: 16px;
  color: #2f3743;
  font-size: 0.94rem;
  font-weight: 680;
  line-height: 1.55;
}

.profile-links {
  display: grid;
  gap: 5px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.profile-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 34px;
  width: 100%;
  padding: 4px 0;
  color: var(--ink);
  font-weight: 720;
}

.profile-link svg {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.2;
}

.profile-link:hover,
.profile-link:focus-visible {
  color: var(--teal);
  outline: none;
}

.profile-link-static {
  color: var(--ink);
}

.profile-link.is-placeholder {
  color: #2f3743;
  cursor: default;
  pointer-events: none;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: 3.45rem;
  line-height: 1.05;
  font-weight: 850;
}

h2 {
  margin-bottom: 0;
  font-size: 2rem;
  line-height: 1.2;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.08rem;
  line-height: 1.45;
}

.lead {
  max-width: 850px;
  color: #303743;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 128px;
  min-height: 44px;
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 750;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--teal);
  outline: none;
}

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

.snapshot {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 34px 0 0;
}

.snapshot div {
  min-height: 100px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
}

.snapshot dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.snapshot dd {
  margin: 8px 0 0;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 760;
  line-height: 1.4;
}

.content-section {
  padding: 68px 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 26px;
}

.section-heading .eyebrow {
  margin-bottom: 6px;
}

.section-heading .after-heading {
  margin: 8px 0 0;
}

.lead strong,
.snapshot strong,
.paper strong {
  color: var(--ink);
  font-weight: 850;
}

.publication-toolbar {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px;
  margin-bottom: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.filter-button {
  min-height: 38px;
  padding: 7px 13px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 780;
}

.filter-button:hover,
.filter-button:focus-visible {
  color: var(--ink);
  outline: 2px solid rgba(15, 118, 110, 0.25);
  outline-offset: 1px;
}

.filter-button.active {
  background: var(--ink);
  color: #fff;
}

.publication-list {
  display: grid;
  gap: 12px;
}

.paper {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 10px 24px rgba(21, 23, 28, 0.04);
}

.paper-with-figure {
  display: grid;
  grid-template-columns: minmax(190px, 27%) minmax(0, 1fr);
  gap: 20px;
  align-items: stretch;
}

.paper-figure {
  position: relative;
  display: block;
  align-self: start;
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
  color: inherit;
  cursor: zoom-in;
  font: inherit;
  text-align: left;
}

.paper-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
}

.paper-figure-tall img {
  aspect-ratio: 4 / 3;
}

.paper-figure-wide img {
  aspect-ratio: 2 / 1;
}

.paper-figure-panorama img {
  aspect-ratio: 21 / 9;
}

.paper-figure-eigensolver img {
  aspect-ratio: 2 / 1;
}

.paper-venue-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 1;
  min-height: 26px;
  padding: 3px 9px;
  border-radius: 7px;
  background: rgba(15, 118, 110, 0.92);
  color: #fff;
  font-size: 0.74rem;
  font-weight: 840;
  line-height: 1.45;
  box-shadow: 0 8px 18px rgba(21, 23, 28, 0.14);
}

.paper-figure:hover,
.paper-figure:focus-visible {
  border-color: var(--teal);
  outline: none;
}

.paper-figure:focus-visible {
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.18);
}

.paper-content {
  display: flex;
  flex-direction: column;
  padding-top: 2px;
}

.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
}

.paper-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  min-width: 72px;
  padding: 5px 12px;
  border: 1px solid var(--teal);
  border-radius: 7px;
  background: var(--teal);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 800;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.paper-action:hover,
.paper-action:focus-visible {
  transform: translateY(-1px);
  background: #0a5d57;
  border-color: #0a5d57;
  outline: none;
}

.paper-action.code-action {
  border-color: var(--line);
  background: #f8fafc;
  color: var(--muted);
}

.paper-action.code-action:hover,
.paper-action.code-action:focus-visible {
  background: #fff;
  border-color: #b8c2cf;
  color: var(--ink);
}

.paper-action.is-disabled {
  border-color: var(--line);
  background: #f8fafc;
  color: var(--muted);
  cursor: default;
  pointer-events: none;
}

.figure-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 32px;
  background: rgba(12, 16, 22, 0.78);
}

.figure-lightbox[hidden] {
  display: none;
}

.figure-lightbox img {
  display: block;
  max-width: min(1180px, 92vw);
  max-height: 86vh;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  object-fit: contain;
}

.figure-lightbox-close {
  position: fixed;
  top: 18px;
  right: 18px;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1;
}

.figure-lightbox-close:hover,
.figure-lightbox-close:focus-visible {
  background: #fff;
  outline: 3px solid rgba(255, 255, 255, 0.32);
}

.paper[hidden] {
  display: none;
}

.paper h3 {
  max-width: 880px;
}

.paper h3 a {
  color: inherit;
  text-decoration: none;
}

.paper h3 a:hover,
.paper h3 a:focus-visible {
  color: var(--teal);
  outline: none;
  text-decoration: underline;
  text-decoration-color: rgba(15, 118, 110, 0.35);
  text-underline-offset: 3px;
}

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

.paper-note {
  margin-top: 8px;
  color: var(--teal) !important;
  font-weight: 750;
}

.paper-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.paper-meta span {
  min-height: 28px;
  padding: 3px 9px;
  border-radius: 7px;
  color: #29413e;
  background: var(--green-soft);
  font-size: 0.78rem;
  font-weight: 820;
}

.paper-meta span:nth-child(2),
.paper-meta .paper-role {
  color: #6f302b;
  background: var(--red-soft);
}

.paper-meta span.paper-topic {
  color: #6f5216;
  background: var(--gold-soft);
}

.two-column {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 46px;
  align-items: start;
}

.two-column .section-heading {
  display: block;
  margin-bottom: 0;
}

#education {
  padding: 44px 0;
}

#education.two-column {
  gap: 32px;
}

#education .timeline {
  gap: 8px;
}

#education .timeline article {
  padding: 13px 16px 13px 24px;
}

#education .timeline article::before {
  left: 12px;
  top: 18px;
  height: calc(100% - 36px);
  min-height: 26px;
  width: 4px;
}

#education .timeline time {
  margin-bottom: 4px;
  font-size: 0.8rem;
}

#education .timeline h3 {
  margin-bottom: 4px;
  font-size: 1rem;
}

#education .timeline p {
  line-height: 1.5;
}

.news-section {
  padding: 48px 0;
}

.news-list {
  display: grid;
  gap: 0;
  padding: 0;
  margin: 0;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
}

.news-list li {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 18px;
  padding: 13px 18px;
}

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

.news-list time {
  color: var(--gold);
  font-size: 0.84rem;
  font-weight: 850;
  white-space: nowrap;
}

.news-list p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.55;
}

.timeline {
  display: grid;
  gap: 12px;
}

.timeline article {
  position: relative;
  padding: 18px 20px 18px 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
}

.timeline article::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 23px;
  width: 5px;
  height: calc(100% - 46px);
  min-height: 34px;
  border-radius: 99px;
  background: var(--teal);
}

.timeline time {
  display: block;
  margin-bottom: 8px;
  color: var(--gold);
  font-size: 0.84rem;
  font-weight: 850;
}

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

.awards ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.awards li {
  min-height: 70px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  font-weight: 680;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.service-list li {
  min-height: 76px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

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

.service-list strong {
  font-weight: 820;
}

.service-list span {
  margin-top: 4px;
  color: var(--muted);
  font-weight: 680;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 38px;
  color: var(--muted);
}

.site-footer p {
  margin-bottom: 0;
}

.site-footer a {
  color: var(--teal);
  font-weight: 760;
}

@media (max-width: 920px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    justify-content: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .profile-card {
    position: static;
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 18px;
    width: 100%;
    max-width: 680px;
  }

  .profile-photo {
    grid-row: span 3;
  }

  .profile-card h1 {
    margin-top: 0;
  }

  .two-column {
    grid-template-columns: 1fr;
  }

  .section-heading {
    display: block;
  }
}

@media (max-width: 680px) {
  .site-header,
  main,
  .site-footer {
    width: min(100% - 24px, 1120px);
  }

  .site-header {
    margin-top: 12px;
    padding: 12px;
  }

  nav a {
    padding-inline: 9px;
  }

  h1 {
    font-size: 2.55rem;
  }

  h2 {
    font-size: 1.58rem;
  }

  .hero {
    padding: 42px 0 34px;
  }

  .profile-card {
    display: block;
  }

  .profile-photo {
    width: min(100%, 220px);
  }

  .profile-card h1 {
    margin-top: 16px;
    font-size: 1.28rem;
  }

  .lead {
    font-size: 1rem;
  }

  .snapshot,
  .awards ul,
  .service-list {
    grid-template-columns: 1fr;
  }

  .news-list li {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .paper {
    padding: 16px;
  }

  .paper-with-figure {
    grid-template-columns: 1fr;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}