:root {
  --ink: #17253a;
  --muted: #647185;
  --blue: #1d4e7a;
  --blue-light: #e9f0f6;
  --line: #dbe1e7;
  --paper: #ffffff;
  --soft: #f6f8fa;
  --accent: #a54d30;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --ink: #e8edf2;
  --muted: #a5b0bd;
  --blue: #8ebbe0;
  --blue-light: #1b3143;
  --line: #354352;
  --paper: #10171e;
  --soft: #18222c;
  --accent: #ee9878;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

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

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

::selection {
  background: #cfe0ef;
}

.topbar {
  align-items: center;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  display: flex;
  height: 64px;
  justify-content: space-between;
  padding: 0 max(24px, calc((100vw - 1080px) / 2));
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
}

:root[data-theme="dark"] .topbar {
  background: rgba(16, 23, 30, 0.94);
}

.brand {
  align-items: baseline;
  color: var(--ink);
  display: inline-flex;
  gap: 0.24em;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.brand-accent {
  color: var(--accent);
}

.brand:hover {
  text-decoration: none;
}

nav {
  display: flex;
  gap: 28px;
}

nav a {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.header-actions {
  align-items: center;
  display: flex;
  gap: 24px;
}

.theme-toggle {
  align-items: center;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 11px;
  font-weight: 650;
  gap: 7px;
  padding: 5px 10px 5px 6px;
}

.theme-toggle:hover {
  border-color: var(--muted);
}

.theme-dot {
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 50%;
  display: inline-block;
  height: 14px;
  position: relative;
  width: 14px;
}

:root[data-theme="dark"] .theme-dot {
  background: var(--paper);
  box-shadow: inset 6px 0 0 var(--ink);
}

.page {
  margin: 0 auto;
  max-width: 1100px;
  padding: 58px 28px 88px;
}

.profile {
  align-items: start;
  display: grid;
  gap: 0 42px;
  grid-template-columns: 192px 1fr;
}

.profile-identity {
  display: contents;
}

.profile-heading {
  align-self: end;
  grid-column: 2;
  grid-row: 1;
}

.profile-main {
  grid-column: 2;
  grid-row: 2;
  max-width: 790px;
}

.portrait {
  aspect-ratio: 3 / 4;
  border: 1px solid var(--line);
  border-radius: 2px;
  box-shadow: 0 8px 26px rgba(18, 38, 58, 0.1);
  grid-column: 1;
  grid-row: 1 / span 2;
  height: auto;
  object-fit: cover;
  object-position: center 28%;
  width: 192px;
}

.overline {
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin: 0 0 6px;
  text-transform: uppercase;
}

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

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
}

h1 {
  font-size: 48px;
  letter-spacing: -0.035em;
  line-height: 1.12;
  margin-bottom: 5px;
}

h1 span {
  color: var(--muted);
  font-family: "Songti SC", SimSun, serif;
  font-size: 25px;
  font-weight: 400;
  margin-left: 8px;
}

.position {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 0;
}

.education-line {
  color: var(--muted);
  font-size: 12.5px;
  margin: 1px 0 0;
}

.swiss-card {
  align-items: center;
  background: var(--soft);
  border: 1px solid var(--line);
  border-left: 3px solid #d52b1e;
  color: var(--ink);
  display: flex;
  gap: 13px;
  margin: 17px 0 20px;
  max-width: 700px;
  padding: 12px 15px 12px 12px;
}

.swiss-card:hover {
  border-color: #d52b1e;
  text-decoration: none;
}

.swiss-card > span:last-child {
  display: flex;
  flex-direction: column;
}

.swiss-card small {
  color: #d52b1e;
  font-size: 9.5px;
  font-style: normal;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.swiss-card strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 14px;
  line-height: 1.35;
}

.swiss-card em {
  color: var(--muted);
  font-size: 10.5px;
  font-style: normal;
  line-height: 1.4;
}

.swiss-mark {
  background: #d52b1e;
  display: block;
  flex: 0 0 34px;
  height: 34px;
  position: relative;
  width: 34px;
}

.swiss-mark::before,
.swiss-mark::after {
  background: white;
  content: "";
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
}

.swiss-mark::before {
  height: 18px;
  width: 6px;
}

.swiss-mark::after {
  height: 6px;
  width: 18px;
}

.profile-main > p:not(.overline):not(.position) {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 15.25px;
  line-height: 1.76;
  margin-bottom: 12px;
}

.profile-main > p strong {
  color: var(--accent);
}

.profile-links {
  display: flex;
  gap: 20px;
  margin-top: 17px;
}

.profile-links a,
.section-title-row > a {
  font-size: 13px;
  font-weight: 650;
}

.topics {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
}

.topics span {
  background: var(--blue-light);
  border-radius: 2px;
  color: #2d5575;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 9px;
}

.section {
  border-top: 1px solid var(--line);
  margin-top: 54px;
  padding-top: 30px;
}

.section-title {
  margin-bottom: 18px;
}

.section-title h2 {
  font-size: 28px;
  line-height: 1.2;
  margin-bottom: 1px;
}

.section-title > span,
.section-title > div > span {
  color: var(--muted);
  font-size: 12px;
}

.section-title-row {
  align-items: end;
  display: flex;
  justify-content: space-between;
}

.news-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 36px;
}

.news-item {
  border-bottom: 1px dotted var(--line);
  display: grid;
  gap: 12px;
  grid-template-columns: 76px 1fr;
  padding: 9px 0;
}

.news-item time {
  color: var(--accent);
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
}

.news-item p {
  font-size: 13px;
  line-height: 1.45;
  margin: 0;
}

.news-accent {
  color: var(--accent);
  font-weight: 750;
  white-space: nowrap;
}

.publication-list {
  border-top: 1px solid #bac3cd;
}

.publication {
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 18px;
  grid-template-columns: 48px 1fr;
  padding: 14px 8px;
  transition:
    background-color 150ms ease,
    padding-left 150ms ease;
}

.publication:first-child {
  background: var(--soft);
}

.publication:hover {
  background: var(--soft);
  padding-left: 12px;
}

.pub-year {
  color: var(--accent);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 14px;
  padding-top: 2px;
}

.publication h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16.25px;
  font-weight: 600;
  line-height: 1.38;
  margin-bottom: 3px;
}

.publication h3 a {
  color: var(--ink);
}

.authors {
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.45;
  margin-bottom: 2px;
}

.authors strong {
  color: var(--ink);
  font-weight: 750;
}

.venue {
  color: var(--blue);
  font-size: 11.5px;
  font-weight: 650;
  margin-bottom: 0;
}

.venue span {
  color: var(--muted);
  font-weight: 500;
}

.paper-links {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 6px;
}

.paper-links a {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--blue);
  font-size: 10.5px;
  font-weight: 700;
  line-height: 1;
  padding: 4px 7px;
  transition:
    background-color 150ms ease,
    border-color 150ms ease;
}

.paper-links a:hover {
  background: var(--blue-light);
  border-color: var(--blue);
  text-decoration: none;
}

.two-column {
  display: grid;
  gap: 64px;
  grid-template-columns: 1fr 1fr;
}

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

.dense-list li {
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 14px;
  grid-template-columns: 42px 1fr;
  padding: 10px 2px;
}

.dense-list span {
  color: var(--accent);
  font-size: 12px;
  font-weight: 650;
}

.dense-list p,
.service-list li {
  font-size: 12.5px;
  line-height: 1.48;
  margin: 0;
}

.award-report {
  font-weight: 650;
  margin-left: 4px;
  white-space: nowrap;
}

.service-list li {
  border-bottom: 1px solid var(--line);
  padding: 9px 2px;
}

.demo-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr 1fr;
}

.demo {
  align-items: start;
  background: var(--soft);
  border: 1px solid var(--line);
  color: var(--ink);
  display: grid;
  gap: 13px;
  grid-template-columns: 26px 1fr 18px;
  padding: 17px;
  transition:
    border-color 150ms ease,
    transform 150ms ease;
}

.demo:hover {
  border-color: #9eb0bf;
  transform: translateY(-1px);
  text-decoration: none;
}

.demo-index {
  color: var(--accent);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 13px;
}

.demo h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 14px;
  line-height: 1.4;
  margin-bottom: 5px;
}

.demo p {
  color: var(--muted);
  font-size: 10.5px;
  line-height: 1.45;
  margin-bottom: 0;
}

footer {
  align-items: center;
  background: var(--soft);
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  font-size: 11px;
  justify-content: space-between;
  padding: 30px max(24px, calc((100vw - 1080px) / 2));
}

footer div {
  display: flex;
  gap: 8px;
}

footer strong {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
}

footer p {
  margin: 0;
}

@media (max-width: 760px) {
  .topbar {
    height: 56px;
    padding: 0 18px;
  }

  nav {
    gap: 14px;
  }

  nav a {
    font-size: 11px;
  }

  nav a:first-child,
  nav a:last-child {
    display: none;
  }

  .header-actions {
    gap: 12px;
  }

  .theme-toggle {
    font-size: 0;
    padding: 6px;
  }

  .theme-toggle .theme-dot {
    height: 15px;
    width: 15px;
  }

  .page {
    padding: 34px 18px 64px;
  }

  .profile {
    gap: 22px 18px;
    grid-template-columns: 108px 1fr;
  }

  .portrait {
    grid-column: 1;
    grid-row: 1;
    width: 108px;
  }

  .profile-heading {
    align-self: center;
    grid-column: 2;
    grid-row: 1;
  }

  .profile-main {
    grid-column: 1 / -1;
    grid-row: 2;
    max-width: none;
  }

  .overline {
    display: none;
  }

  h1 {
    font-size: 32px;
    letter-spacing: -0.045em;
    white-space: nowrap;
  }

  h1 span {
    display: block;
    font-size: 18px;
    margin-left: 0;
  }

  .position {
    font-size: 12px;
  }

  .swiss-card {
    align-items: flex-start;
    margin-top: 0;
  }

  .profile-main > p:not(.overline):not(.position) {
    font-size: 14px;
  }

  .profile-main > p:nth-of-type(3),
  .topics {
    grid-column: 1 / -1;
  }

  .profile-links {
    gap: 12px;
  }

  .news-list,
  .two-column,
  .demo-grid {
    grid-template-columns: 1fr;
  }

  .section-title-row {
    align-items: start;
    flex-direction: column;
    gap: 8px;
  }

  .publication {
    grid-template-columns: 40px 1fr;
  }

  .two-column {
    gap: 40px;
  }

  footer {
    align-items: start;
    flex-direction: column;
    gap: 8px;
  }
}

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