@font-face {
  font-family: "Lato";
  src: url("assets/fonts/Lato-Light.woff2") format("woff2"),
       url("assets/fonts/Lato-Light.woff") format("woff");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("assets/fonts/Lato-LightItalic.woff2") format("woff2"),
       url("assets/fonts/Lato-LightItalic.woff") format("woff");
  font-weight: 300;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("assets/fonts/Lato-Regular.woff2") format("woff2"),
       url("assets/fonts/Lato-Regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("assets/fonts/Lato-Italic.woff2") format("woff2"),
       url("assets/fonts/Lato-Italic.woff") format("woff");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("assets/fonts/Lato-Bold.woff2") format("woff2"),
       url("assets/fonts/Lato-Bold.woff") format("woff");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("assets/fonts/Lato-BoldItalic.woff2") format("woff2"),
       url("assets/fonts/Lato-BoldItalic.woff") format("woff");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("assets/fonts/Lato-Bold.woff2") format("woff2"),
       url("assets/fonts/Lato-Bold.woff") format("woff");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #f8f7f3;
  --paper: #ffffff;
  --paper-soft: #fcfbf8;
  --pub-cell: transparent;
  --pub-cell-hover: rgba(31, 35, 40, 0.045);
  --pub-cell-open: rgba(31, 35, 40, 0.06);
  --text: #1f2328;
  --muted: #7a7f86;
  --muted-2: #9aa0a6;
  --line: #ddd8cf;
  --accent: #2f5d75;
  --accent-soft: #eef4f7;
  --header-bg: rgba(255, 255, 255, 0.94);
  --header-solid: rgba(255, 255, 255, 0.98);
  --table-head: #fbfaf7;
  --btn-line: #d6dfe4;
  --btn-hover: #e4eef3;
  --focus-ring: rgba(47, 93, 117, 0.28);
  --maxw: 980px;
  --narrow: 900px;
  --shadow: 0 10px 24px rgba(0, 0, 0, 0.04);
  --shadow-strong: 0 20px 40px rgba(0, 0, 0, 0.12);
}

html[data-theme="dark"] {
  --bg: #101419;
  --paper: #171d24;
  --paper-soft: #1d252d;
  --pub-cell: transparent;
  --pub-cell-hover: rgba(237, 242, 247, 0.06);
  --pub-cell-open: rgba(237, 242, 247, 0.085);
  --text: #edf2f7;
  --muted: #b7c0cb;
  --muted-2: #8f9ba8;
  --line: #2e3945;
  --accent: #8ecae6;
  --accent-soft: #1d3340;
  --header-bg: rgba(20, 27, 34, 0.94);
  --header-solid: rgba(20, 27, 34, 0.98);
  --table-head: #19222a;
  --btn-line: #385062;
  --btn-hover: #264252;
  --focus-ring: rgba(142, 202, 230, 0.34);
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.24);
  --shadow-strong: 0 20px 44px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Lato", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.72;
  transition: background-color 0.22s ease, color 0.22s ease;
}

body.nav-open {
  overflow: hidden;
}

em, i {
  font-synthesis: none;
}

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

a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.wrapper {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.wrapper.narrow {
  max-width: var(--narrow);
}

.site-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  z-index: 20;
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 70px;
}

.site-title {
  font-size: 1.12rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--text);
  position: relative;
  z-index: 22;
}

.site-title-sub {
  font-weight: 400;
  font-size: 0.95em;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.98rem;
}

.nav a {
  color: var(--text);
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}

.nav a.active,
.nav a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
  text-decoration: none;
}

.theme-toggle,
.nav-toggle {
  appearance: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
  color: var(--text);
  cursor: pointer;
  transition: background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease, transform 0.18s ease;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex: 0 0 auto;
}

.theme-toggle:hover,
.nav-toggle:hover {
  background: var(--accent-soft);
}

.theme-toggle:active,
.nav-toggle:active {
  transform: translateY(1px);
}

.theme-toggle:focus-visible,
.nav-toggle:focus-visible,
.paper-toggle:focus-visible,
.mini-btn:focus-visible,
button.mini-btn:focus-visible,
a:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

.nav-toggle {
  display: none;
  padding: 9px 8px;
  position: relative;
  z-index: 22;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--text);
  border-radius: 999px;
}

main {
  padding: 36px 0 48px;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  transition: background-color 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.hero {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 30px;
  padding: 28px;
  margin-bottom: 28px;
}

.portrait img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
}

.hero h1,
.page-title {
  margin: 0 0 8px;
  font-size: 2.1rem;
  line-height: 1.12;
}

.subtitle {
  font-size: 1.08rem;
  margin-bottom: 8px;
}

.affiliations,
.keywords,
.muted {
  color: var(--muted);
}

.section {
  padding: 24px 28px;
  margin-bottom: 24px;
}

.section:last-child {
  margin-bottom: 0;
}

.section h2 {
  margin: 0 0 12px;
  font-size: 1.38rem;
}

.section h3 {
  margin: 1.15em 0 0.45em;
  font-size: 1.06rem;
}

.plain-list {
  margin: 0;
  padding-left: 20px;
}

.plain-list li {
  margin-bottom: 10px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.98rem;
}

th, td {
  text-align: left;
  padding: 10px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  font-weight: 700;
  background: var(--table-head);
}

.counter-block {
  text-align: center;
  margin: -4px auto 26px;
  color: var(--muted);
  font-size: 0.92rem;
  width: fit-content;
  max-width: 100%;
}

.counter-block .counter-label {
  display: block;
  margin-bottom: 10px;
}

.footer {
  padding: 0 0 34px;
  color: var(--muted);
  font-size: 0.94rem;
}

.footer-inner {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  text-align: center;
}

.research-intro {
  margin-bottom: 18px;
}

.research-group {
  margin-bottom: 28px;
}

.research-group:last-child {
  margin-bottom: 0;
}

.pub-list {
  display: grid;
  gap: 16px;
}

.pub-item {
  background: var(--pub-cell);
  border: none;
  border-radius: 14px;
  box-shadow: none;
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.18s ease;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) and (pointer: fine) {
  .pub-item:hover {
    background: var(--pub-cell-hover);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.04);
  }
}

.pub-item.is-open {
  background: var(--pub-cell-open);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.04);
}

@media (hover: none), (pointer: coarse) {
  .pub-item:active {
    background: var(--pub-cell-hover);
  }
}

.pub-item:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

.pub-meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 16px 18px;
}

.pub-number {
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.5;
  min-width: 2.1rem;
  padding-top: 2px;
}

.pub-main {
  min-width: 0;
}

.paper-toggle {
  display: block;
  width: 100%;
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.paper-toggle:hover .pub-title,
.paper-toggle:focus-visible .pub-title,
.pub-item:hover .pub-title {
  text-decoration: underline;
}

.pub-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}

.pub-coauthors {
  color: var(--muted);
  font-size: 0.97rem;
  margin-top: 4px;
}

.pub-journal {
  color: var(--muted-2);
  font-size: 0.98rem;
  margin-top: 2px;
}

.pub-journal strong,
.pub-journal em {
  font-weight: 700;
}

.pub-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.mini-btn,
button.mini-btn {
  appearance: none;
  border: 1px solid var(--btn-line);
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 5px 11px;
  font: inherit;
  font-size: 0.92rem;
  line-height: 1.2;
  cursor: pointer;
}

.mini-btn:hover,
button.mini-btn:hover {
  text-decoration: none;
  background: var(--btn-hover);
}

.abstract-wrap,
.bibtex-wrap {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper-soft);
  overflow: hidden;
}

.abstract-wrap p {
  margin: 0;
  padding: 12px 14px;
  color: var(--muted);
  font-size: 0.96rem;
}

.bibtex-toolbar {
  display: flex;
  justify-content: flex-end;
  padding: 10px 12px 0;
}

.bibtex-wrap pre {
  margin: 0;
  padding: 10px 14px 14px;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.copy-status {
  color: var(--muted);
  font-size: 0.88rem;
  margin-left: 10px;
  align-self: center;
}

.contact-list {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.contact-list li {
  margin-bottom: 10px;
}

.note-box {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
  color: var(--muted);
}

.edu-list {
  display: grid;
  gap: 18px;
}

.edu-item {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.edu-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.edu-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: flex-start;
  gap: 6px 14px;
}

.edu-degree,
.edu-school,
.edu-year {
  font-size: 1rem;
}

.edu-degree {
  font-weight: 700;
}

.edu-school {
  color: var(--text);
}

.edu-year {
  flex: 0 0 auto;
  min-width: 3.2rem;
  white-space: nowrap;
  color: var(--muted);
}

.edu-details {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.97rem;
}

@media (max-width: 760px) {
  body {
    line-height: 1.64;
  }

  .wrapper {
    padding: 0 16px;
  }

  .site-header-inner {
    min-height: 64px;
    gap: 14px;
  }

  .header-controls {
    gap: 8px;
  }

  .theme-toggle {
    width: 40px;
    height: 40px;
    font-size: 0.95rem;
  }

  .nav-toggle {
    display: block;
    width: 40px;
    height: 40px;
  }

  .nav {
    position: fixed;
    top: 65px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    gap: 0;
    background: var(--header-solid);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow-strong);
    padding: 10px 0;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 12px 16px;
    border-bottom: 0;
  }

  .nav a.active,
  .nav a:hover {
    background: var(--accent-soft);
    border-bottom-color: transparent;
  }

  main {
    padding: 24px 0 38px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 20px;
    margin-bottom: 20px;
  }

  .portrait {
    max-width: 180px;
  }

  .hero h1,
  .page-title {
    font-size: 1.72rem;
  }

  .subtitle {
    font-size: 1rem;
  }

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

  .section h2 {
    font-size: 1.25rem;
  }

  th, td {
    padding: 9px 8px;
    font-size: 0.95rem;
  }

  .counter-block {
    margin-bottom: 20px;
  }

  .pub-list {
    gap: 14px;
  }

  .pub-meta {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 14px 14px;
  }

  .pub-number {
    font-size: 0.9rem;
    min-width: 0;
    padding-top: 0;
  }

  .pub-title {
    font-size: 1rem;
    line-height: 1.38;
  }

  .pub-coauthors,
  .pub-journal {
    font-size: 0.94rem;
  }

  .pub-actions {
    gap: 8px;
    margin-top: 10px;
  }

  .mini-btn,
  button.mini-btn {
    font-size: 0.88rem;
    padding: 5px 10px;
  }

  .abstract-wrap p,
  .bibtex-wrap pre {
    font-size: 0.88rem;
  }

  .edu-head {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .edu-degree,
  .edu-school,
  .edu-year,
  .edu-details {
    font-size: 0.94rem;
  }

  .edu-year {
    min-width: 0;
  }
}