:root {
  --bg: #f4ede4;
  --bg-strong: #fbf7f0;
  --surface: rgba(255, 250, 244, 0.82);
  --ink: #142631;
  --ink-soft: #53646d;
  --ink-faint: #7a8a92;
  --line: rgba(20, 38, 49, 0.14);
  --line-strong: rgba(20, 38, 49, 0.24);
  --accent: #296a67;
  --accent-deep: #173743;
  --accent-warm: #b96c45;
  --accent-red: #b4362f;
  --dark-panel: #15242e;
  --dark-panel-alt: #1d313d;
  --dark-ink: #f3eee5;
  --shadow: 0 22px 56px rgba(20, 38, 49, 0.08);
}

html[data-theme="dark"] {
  --bg: #0e161c;
  --bg-strong: #131e25;
  --surface: rgba(18, 29, 37, 0.9);
  --ink: #eef2ef;
  --ink-soft: #c0cacf;
  --ink-faint: #91a1a8;
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(255, 255, 255, 0.24);
  --accent: #8bcdc3;
  --accent-deep: #f3efe6;
  --accent-warm: #e1a27c;
  --accent-red: #ff7564;
  --dark-panel: #0b1217;
  --dark-panel-alt: #13202a;
  --dark-ink: #f6f0e8;
  --shadow: 0 24px 64px rgba(0, 0, 0, 0.3);
}

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

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Manrope", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  position: relative;
  background:
    radial-gradient(circle at 8% 10%, rgba(41, 106, 103, 0.1), transparent 24%),
    radial-gradient(circle at 86% 12%, rgba(185, 108, 69, 0.12), transparent 24%),
    linear-gradient(180deg, #f8f2ea 0%, var(--bg) 48%, #efe5d7 100%);
}

html[data-theme="dark"] body {
  background:
    radial-gradient(circle at 8% 10%, rgba(139, 205, 195, 0.08), transparent 24%),
    radial-gradient(circle at 86% 12%, rgba(225, 162, 124, 0.08), transparent 24%),
    linear-gradient(180deg, #0b1217 0%, var(--bg) 52%, #0c1419 100%);
}

.site-background {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  display: none;
  opacity: 0;
  transition: opacity 220ms ease;
}

html[data-motion="on"] .site-background {
  display: block;
  opacity: 0.92;
}

html[data-motion="on"][data-theme="dark"] .site-background {
  opacity: 0.96;
}

.site-background canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

button,
input,
textarea,
select {
  font: inherit;
}

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

.site-header,
.site-main,
.site-footer {
  width: min(1260px, calc(100% - 44px));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 18px;
  z-index: 20;
  margin-top: 18px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 26px;
  align-items: center;
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(248, 243, 236, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

html[data-theme="dark"] .site-header {
  background: rgba(12, 19, 24, 0.82);
}

.brand {
  display: grid;
  gap: 4px;
}

.brand__name {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.92rem;
  line-height: 1;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.brand__meta {
  color: var(--ink-faint);
  font-size: 0.84rem;
}

.site-header__panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-width: 0;
}

.site-nav,
.site-utilities,
.hero-actions,
.hero-contact,
.home-publication__links,
.publication-entry__links,
.publication-entry__categories,
.directory-item__links,
.news-item__links,
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-nav a {
  padding: 8px 0;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--accent-deep);
  border-bottom-color: currentColor;
}

.utility-link,
.lang-toggle,
.theme-toggle,
.motion-toggle,
.menu-toggle,
.button,
.filter-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  color: var(--accent-deep);
  cursor: pointer;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.utility-link,
.lang-toggle,
.theme-toggle,
.motion-toggle,
.menu-toggle {
  min-height: 40px;
  padding: 0 13px;
  font-size: 0.78rem;
}

.lang-toggle {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  color: #f7efe5;
}

.theme-toggle {
  width: 42px;
  min-width: 42px;
  min-height: 42px;
  padding: 0;
  border-radius: 999px;
  background: rgba(255, 250, 244, 0.78);
}

.motion-toggle {
  min-width: 94px;
}

.theme-toggle__icon {
  width: 18px;
  height: 18px;
  transition: transform 180ms ease;
}

.theme-toggle:hover .theme-toggle__icon {
  transform: rotate(10deg) scale(1.05);
}

.menu-toggle {
  display: none;
}

.site-main {
  padding: 46px 0 72px;
}

.site-main--home {
  padding-top: 38px;
}

.eyebrow,
.research-feature__index,
.home-publication__year,
.publication-entry__year,
.news-item__date {
  margin: 0;
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-editorial {
  display: grid;
  grid-template-columns: minmax(220px, 272px) minmax(0, 1fr);
  gap: clamp(34px, 5vw, 72px);
  align-items: start;
}

.hero-portrait {
  margin: 0;
  width: min(100%, 272px);
  justify-self: start;
}

.hero-portrait__frame {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    radial-gradient(circle at top left, rgba(185, 108, 69, 0.18), transparent 28%),
    linear-gradient(180deg, #e0e8e5, #f8f1e8);
  box-shadow: var(--shadow);
}

html[data-theme="dark"] .hero-portrait__frame {
  background:
    radial-gradient(circle at top left, rgba(225, 162, 124, 0.16), transparent 28%),
    linear-gradient(180deg, #142029, #0f161c);
}

.hero-portrait__frame img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 8px;
}

.hero-portrait__caption {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 8px;
}

.hero-portrait__name {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.52rem;
  line-height: 1.1;
  font-weight: 600;
}

.hero-portrait__title {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.7;
}

.hero-contact a,
.contact-link {
  color: var(--accent-deep);
  font-weight: 700;
}

.hero-editorial__copy {
  max-width: 46rem;
  display: grid;
  align-content: start;
  padding-top: 4px;
  min-width: 0;
}

.hero-editorial__copy h1,
.page-hero h1,
.section-heading h2,
.research-feature h3,
.publication-entry h2,
.news-item h2,
.directory-group h2,
.directory-item__name,
.home-publication h3,
.recruitment-band h2 {
  margin: 0;
  font-family: "Source Serif 4", Georgia, serif;
  letter-spacing: -0.03em;
}

.hero-editorial__copy h1 {
  margin-top: 14px;
  max-width: 22ch;
  font-size: clamp(1.58rem, 2.08vw, 1.96rem);
  line-height: 1.08;
  text-wrap: initial;
}

.hero-title span {
  display: block;
}

.hero-lede {
  margin: 18px 0 0;
  max-width: 38rem;
  color: var(--ink);
  font-size: 1.02rem;
  line-height: 1.88;
  text-wrap: pretty;
}

.editorial-copy {
  margin-top: 18px;
  display: grid;
  gap: 12px;
  max-width: 38rem;
  padding-top: 15px;
  border-top: 1px solid var(--line);
}

.editorial-copy--compact {
  max-width: 34rem;
}

.editorial-copy p,
.research-feature p,
.home-publication__venue,
.publication-entry__authors,
.publication-entry__venue,
.news-item p,
.directory-item__role,
.directory-item__note,
.directory-item__outcome,
.site-footer p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.78;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.hero-actions {
  margin-top: 26px;
}

.equation-ribbon {
  width: min(100%, 39rem);
  margin-top: 28px;
}

.decoder-panel {
  display: grid;
  grid-template-columns: fit-content(17.5rem) minmax(0, 1fr);
  justify-content: start;
  gap: clamp(1.6rem, 3vw, 3.1rem);
  align-items: center;
  width: 100%;
  padding: 22px 23px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  background:
    radial-gradient(circle at top right, rgba(225, 162, 124, 0.16), transparent 30%),
    linear-gradient(140deg, #11202a, #162734 58%, #1a3040);
  box-shadow: 0 30px 64px rgba(8, 15, 20, 0.24);
}

.decoder-panel__meta {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.decoder-panel__name {
  color: #f0c89a;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.decoder-panel__formula {
  color: rgba(243, 238, 229, 0.84);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.08rem;
  line-height: 1.64;
}

.decoder-panel__formula .katex {
  color: inherit;
  font-size: 1.02em;
}

.decoder-panel__output {
  color: #f4efe5;
  font-size: clamp(1.12rem, 1.62vw, 1.52rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  width: auto;
  min-width: 0;
  justify-self: end;
  text-align: right;
  white-space: nowrap;
}

.math-op {
  font-style: italic;
}

.math-hat {
  position: relative;
  display: inline-block;
  padding-top: 0.16em;
}

.math-hat::before {
  content: "^";
  position: absolute;
  left: 50%;
  top: -0.52em;
  transform: translateX(-50%) scaleX(1.1);
  font-size: 0.8em;
  line-height: 1;
}

.button {
  min-height: 46px;
  padding: 0 16px;
  font-size: 0.9rem;
}

.button--primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg-strong);
}

html[data-theme="dark"] .button--primary {
  background: #f3eee5;
  border-color: #f3eee5;
  color: #12202a;
}

.button--light {
  background: #f6ede0;
  border-color: #f6ede0;
  color: #12202a;
}

.button--spark {
  gap: 8px;
}

.button__spark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-warm);
}

html[data-motion="on"] .button__spark {
  animation: spark-pulse 2.1s ease-in-out infinite;
}

.page-hero__lede {
  margin: 4px 0 0;
  max-width: 42rem;
  color: var(--ink-soft);
  line-height: 1.84;
  overflow-wrap: anywhere;
}

.section {
  padding-top: 68px;
}

.section--tight {
  padding-top: 18px;
}

.section-heading {
  display: grid;
  gap: 10px;
  margin-bottom: 26px;
}

.section-heading--minimal h2 {
  font-size: clamp(1.52rem, 2.32vw, 1.94rem);
}

.research-showcase {
  display: grid;
  gap: 54px;
}

.research-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 32px;
  align-items: center;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.research-feature--reverse {
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
}

.research-feature--reverse .research-feature__visual {
  order: 2;
}

.research-feature__visual img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.research-feature__text {
  max-width: 28rem;
  min-width: 0;
}

.research-feature h3 {
  margin-top: 8px;
  font-size: clamp(1.26rem, 1.72vw, 1.58rem);
  line-height: 1.12;
}

.research-feature p {
  margin-top: 12px;
}

.home-publication-list,
.publication-results,
.directory,
.news-list {
  display: grid;
}

.home-publication {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: start;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

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

.home-publication__titleline,
.publication-entry__titleline,
.news-item__titleline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.home-publication h3 {
  font-size: 1.06rem;
  line-height: 1.22;
  overflow-wrap: anywhere;
}

.home-publication__venue {
  margin-top: 6px;
}

.home-publication__venue span {
  color: var(--accent-red);
  font-weight: 700;
}

.home-publication__links {
  justify-self: end;
}

.section--dark {
  margin-top: 10px;
}

.recruitment-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 34px;
  padding: 36px;
  border-radius: 14px;
  background:
    radial-gradient(circle at top right, rgba(225, 162, 124, 0.16), transparent 26%),
    linear-gradient(150deg, var(--dark-panel), var(--dark-panel-alt));
  box-shadow: 0 28px 64px rgba(0, 0, 0, 0.18);
}

.recruitment-band .eyebrow {
  color: #f0c89a;
}

.recruitment-band h2,
.recruitment-band .editorial-copy p,
.recruitment-band .contact-link {
  color: var(--dark-ink);
}

.recruitment-band .editorial-copy p {
  color: rgba(243, 238, 229, 0.86);
}

.recruitment-band__contact {
  display: grid;
  align-content: start;
  gap: 14px;
  min-width: 240px;
}

.recruitment-band__contact .contact-link {
  font-size: 1rem;
  font-weight: 700;
}

.page-hero {
  display: grid;
  gap: 10px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  font-size: clamp(1.68rem, 2.58vw, 2.12rem);
  line-height: 1.06;
}

.publication-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding-top: 28px;
}

.search-field input {
  width: 100%;
  min-height: 48px;
  padding: 0 15px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.44);
  color: var(--ink);
}

html[data-theme="dark"] .search-field input {
  background: rgba(255, 255, 255, 0.03);
}

.search-field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(41, 106, 103, 0.08);
}

.publication-filter-panel {
  padding-top: 16px;
}

.filter-row {
  gap: 10px;
}

.filter-chip {
  min-height: 38px;
  padding: 0 12px;
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.filter-chip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg-strong);
}

html[data-theme="dark"] .filter-chip.is-active {
  background: #f2ece3;
  border-color: #f2ece3;
  color: #10202a;
}

.result-count {
  margin: 14px 0 0;
  color: var(--ink-soft);
}

.publication-entry {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.publication-entry__body,
.directory-item__body,
.news-item__body {
  min-width: 0;
}

.publication-entry h2 {
  font-size: 1.16rem;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.publication-entry__authors {
  margin-top: 10px;
}

.publication-entry__venue {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 6px;
  color: var(--accent-deep);
  font-weight: 700;
}

.publication-entry__venue-note {
  color: var(--accent-red);
}

.publication-entry__categories,
.publication-entry__links {
  margin-top: 12px;
}

.category-tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.76rem;
  font-weight: 700;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 8px;
  border-radius: 999px;
  border: 1px solid rgba(20, 38, 49, 0.16);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge--red {
  border-color: rgba(180, 54, 47, 0.22);
  background: rgba(180, 54, 47, 0.1);
  color: var(--accent-red);
}

.publication-entry__links a,
.home-publication__links a,
.directory-item__links a,
.news-item__links a {
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
}

.directory {
  gap: 44px;
}

.directory-group {
  display: grid;
  gap: 10px;
}

.directory-group__header {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.directory-group h2 {
  font-size: clamp(1.48rem, 2.28vw, 1.82rem);
}

.directory-group__list {
  display: grid;
}

.directory-item {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.directory-item__avatar {
  width: 120px;
  height: 120px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(140deg, rgba(41, 106, 103, 0.12), rgba(185, 108, 69, 0.12));
  color: var(--accent-deep);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.56rem;
  font-weight: 600;
}

.directory-item__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.directory-item__name {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: baseline;
  font-size: 1.52rem;
  line-height: 1.1;
  font-family: "Manrope", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  overflow-wrap: anywhere;
}

.directory-item__name-en {
  display: inline;
  font-family: "Manrope", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
}

.directory-item__name-zh {
  display: inline;
  color: rgba(23, 55, 67, 0.9);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 0.9em;
  font-weight: 600;
  letter-spacing: 0;
}

html[data-theme="dark"] .directory-item__name-zh {
  color: rgba(243, 239, 230, 0.88);
}

.directory-item__role {
  margin-top: 7px;
  color: var(--accent-deep);
  font-weight: 700;
}

.directory-item__note {
  margin-top: 8px;
}

.directory-item__outcome {
  margin-top: 6px;
  color: var(--accent);
  font-weight: 700;
}

.directory-item__links {
  margin-top: 12px;
}

.news-item {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.news-item h2 {
  font-size: 1.14rem;
  line-height: 1.22;
  overflow-wrap: anywhere;
}

.news-item p {
  margin-top: 10px;
}

.news-item__links {
  margin-top: 12px;
}

.site-footer {
  margin-bottom: 40px;
  padding: 24px 0 0;
  border-top: 1px solid var(--line);
}

.site-footer__credit {
  margin-top: 6px;
}

.site-footer__credit a {
  color: var(--ink-faint);
}

.teaching-grid {
  display: grid;
  gap: 18px;
}

.teaching-card,
.course-meta,
.course-section {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.34);
  box-shadow: var(--shadow);
}

.teaching-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: end;
  padding: 24px 24px 22px;
}

.teaching-card__body {
  min-width: 0;
}

.teaching-card h2,
.course-section h2,
.course-meta h2 {
  margin: 0;
  font-family: "Source Serif 4", Georgia, serif;
  letter-spacing: -0.03em;
}

.teaching-card h2 {
  margin-top: 10px;
  font-size: clamp(1.16rem, 1.56vw, 1.42rem);
  line-height: 1.16;
}

.teaching-card__summary {
  margin: 12px 0 0;
  color: var(--ink-soft);
  line-height: 1.78;
  overflow-wrap: anywhere;
}

.teaching-card__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-top: 12px;
  color: var(--accent-deep);
  font-size: 0.93rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.teaching-card__facts span {
  white-space: nowrap;
}

.teaching-card__meta {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.teaching-card__meta p,
.course-meta p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.72;
  overflow-wrap: anywhere;
}

.teaching-card__meta span {
  color: var(--accent-deep);
  font-weight: 700;
}

.course-page {
  display: grid;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.course-meta {
  display: grid;
  gap: 16px;
  padding: 22px;
  position: sticky;
  top: 102px;
}

.course-meta__item {
  display: grid;
  gap: 6px;
}

.course-meta h2 {
  font-size: 0.96rem;
  line-height: 1.16;
}

.course-page__content {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.course-section {
  padding: 24px;
}

.course-section h2 {
  font-size: 1.22rem;
  line-height: 1.1;
}

.course-body {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.course-body p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.course-list {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding-left: 1.2rem;
  color: var(--ink-soft);
}

.course-list li {
  line-height: 1.72;
  overflow-wrap: anywhere;
}

.course-back {
  justify-self: start;
}

.empty-state {
  margin: 18px 0 0;
  color: var(--ink-soft);
}

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

.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 650ms ease, transform 650ms ease;
}

html[data-motion="on"] .reveal:not(.is-visible) {
  opacity: 0;
  transform: translateY(16px);
}

.reveal.is-visible,
html[data-motion="on"] .reveal.is-visible,
html[data-motion="off"] .reveal {
  opacity: 1;
  transform: none;
}

html[data-motion="off"] .reveal {
  transition: none;
}

.site-nav a:hover,
.utility-link:hover,
.lang-toggle:hover,
.theme-toggle:hover,
.motion-toggle:hover,
.button:hover,
.filter-chip:hover,
.hero-contact a:hover,
.contact-link:hover,
.publication-entry__links a:hover,
.home-publication__links a:hover,
.directory-item__links a:hover,
.news-item__links a:hover {
  transform: translateY(-1px);
}

html[data-theme="dark"] .utility-link,
html[data-theme="dark"] .theme-toggle,
html[data-theme="dark"] .motion-toggle,
html[data-theme="dark"] .menu-toggle {
  color: var(--dark-ink);
  background: rgba(255, 255, 255, 0.03);
}

html[data-theme="dark"] .lang-toggle {
  background: #1d343e;
  border-color: rgba(139, 205, 195, 0.34);
  color: #dcf5f0;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

html[data-theme="dark"] .decoder-panel {
  background:
    radial-gradient(circle at top right, rgba(225, 162, 124, 0.14), transparent 28%),
    linear-gradient(140deg, #0d151b, #12212b 56%, #17303c);
}

html[data-theme="dark"] .decoder-panel__output {
  color: #f4efe5;
}

html[data-theme="dark"] .teaching-card,
html[data-theme="dark"] .course-meta,
html[data-theme="dark"] .course-section {
  background: rgba(255, 255, 255, 0.03);
}

@supports not ((-webkit-backdrop-filter: blur(2px)) or (backdrop-filter: blur(2px))) {
  .site-header {
    background: rgba(248, 243, 236, 0.96);
  }

  html[data-theme="dark"] .site-header {
    background: rgba(12, 19, 24, 0.95);
  }
}

@media (max-width: 1080px) {
  .hero-editorial,
  .research-feature,
  .research-feature--reverse,
  .recruitment-band,
  .publication-tools,
  .home-publication,
  .decoder-panel,
  .course-page,
  .teaching-card {
    grid-template-columns: 1fr;
  }

  .research-feature--reverse .research-feature__visual {
    order: 0;
  }

  .hero-editorial__copy h1 {
    max-width: none;
  }

  .hero-portrait {
    width: min(100%, 300px);
  }

  .home-publication__links {
    justify-self: start;
  }

  .course-meta {
    position: static;
  }

  .decoder-panel__output {
    width: auto;
    min-width: 0;
    justify-self: end;
    text-align: right;
  }
}

@media (max-width: 960px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-header__panel {
    display: none;
    grid-column: 1 / -1;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--line);
  }

  body[data-nav-open="true"] .site-header__panel {
    display: flex;
  }

  .site-nav,
  .site-utilities {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .site-header,
  .site-main,
  .site-footer {
    width: min(100%, calc(100% - 24px));
  }

  .site-header {
    top: 12px;
    margin-top: 12px;
    padding: 14px 16px;
  }

  .site-main {
    padding: 34px 0 58px;
  }

  .hero-editorial__copy h1 {
    font-size: clamp(1.44rem, 5.8vw, 1.68rem);
  }

  .page-hero h1,
  .section-heading--minimal h2,
  .directory-group h2 {
    font-size: clamp(1.52rem, 6.2vw, 1.82rem);
  }

  .publication-entry,
  .news-item,
  .directory-item {
    grid-template-columns: 1fr;
  }

  .teaching-card,
  .course-section {
    padding: 20px;
  }

  .course-meta {
    padding: 20px;
  }

  .directory-item__avatar {
    width: 96px;
    height: 96px;
  }

  .recruitment-band {
    padding: 24px;
  }

  .motion-toggle {
    min-width: 86px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal,
  html[data-motion="on"] .reveal {
    opacity: 1;
    transform: none;
  }

  html[data-motion="on"] .button__spark {
    animation: none !important;
  }
}

@keyframes spark-pulse {
  0%,
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 0.92;
  }

  50% {
    transform: scale(1.12) rotate(12deg);
    opacity: 1;
  }
}