:root {
  --ink: #101826;
  --text: #283447;
  --muted: #66758c;
  --paper: #f7f9fc;
  --surface: #ffffff;
  --soft: #edf3f9;
  --line: #d8e1ec;
  --teal: #2f5f99;
  --teal-dark: #193b66;
  --amber: #9fb3d1;
  --coral: #7788a3;
  --green: #526c91;
  --shadow: 0 18px 42px rgba(24, 43, 72, 0.1);
}

@font-face {
  font-family: "Pretendard";
  src: url("assets/fonts/PretendardVariable.woff2") format("woff2");
  font-weight: 45 920;
  font-style: normal;
  font-display: swap;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: "Pretendard", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

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

a:hover {
  text-decoration: underline;
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  transform: translateY(-150%);
  background: var(--ink);
  color: #fff;
  padding: 10px 14px;
  border-radius: 6px;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 249, 252, 0.92);
  border-bottom: 1px solid rgba(216, 225, 236, 0.9);
  backdrop-filter: blur(14px);
}

.nav-wrap {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0;
  color: var(--ink);
  font-weight: 800;
  white-space: nowrap;
}

.brand-logo {
  width: 96px;
  height: 46px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  padding: 8px 10px;
  border-radius: 6px;
}

.nav-links a:hover,
.nav-links a.is-active {
  background: var(--soft);
  color: var(--teal-dark);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-size: 22px;
  cursor: pointer;
}

.hero {
  min-height: 0;
  display: grid;
  align-items: end;
  position: relative;
  isolation: isolate;
  color: #fff;
  background-image:
    linear-gradient(90deg, rgba(6, 17, 36, 0.94), rgba(8, 23, 45, 0.68) 42%, rgba(8, 23, 45, 0.12)),
    url("assets/hero-xit-lab-navy.png");
  background-size: cover;
  background-position: center top;
}

.hero-inner,
.section-inner {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.hero-inner {
  padding: 84px 0 40px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 860px;
  margin: 0;
  color: #fff;
  font-size: 52px;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 730px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 18px;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: var(--teal);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 8px 20px rgba(18, 49, 89, 0.16);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.button:hover {
  background: var(--teal-dark);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 14px 28px rgba(18, 49, 89, 0.24);
  transform: translateY(-1px);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(255, 255, 255, 0.42);
  color: #fff;
}

.button.light {
  background: var(--soft);
  color: var(--teal-dark);
  border-color: var(--line);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 32px;
}

.stat {
  min-height: 96px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.stat:hover,
.stat:focus-visible {
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1);
  transform: none;
}

.stat strong {
  display: block;
  color: #fff;
  font-size: 24px;
  line-height: 1.1;
}

.stat span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
}

main section {
  scroll-margin-top: 84px;
}

.page-view[hidden] {
  display: none;
}

.page-view {
  animation: page-in 220ms ease-out both;
}

@keyframes page-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section {
  min-height: calc(100vh - 68px);
  padding: 58px 0;
}

.section.alt {
  background: #edf3f9;
}

#overview,
#news {
  min-height: auto;
  padding: 42px 0;
}

.section.compact {
  padding-top: 54px;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.45fr);
  align-items: end;
  gap: 42px;
  margin-bottom: 34px;
}

.section-kicker {
  margin: 0 0 8px;
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.section h2 {
  margin: 0;
  color: var(--ink);
  font-size: 34px;
  line-height: 1.16;
  letter-spacing: 0;
}

.section-intro {
  margin: 0;
  color: var(--muted);
}

.overview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 24px;
}

.home-overview-grid {
  grid-template-columns: minmax(270px, 0.72fr) minmax(420px, 1.28fr);
  align-items: stretch;
}

.prose-panel,
.contact-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 28px;
}

.prose-panel p:first-child {
  margin-top: 0;
}

.prose-panel p:last-child {
  margin-bottom: 0;
}

.highlight-panel {
  display: grid;
  gap: 12px;
}

.mini-card,
.news-item,
.research-card,
.project-card,
.person-card,
.publication,
.gallery-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.research-card,
.project-card,
.gallery-card,
.publication {
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease,
    background 180ms ease;
}

.mini-card {
  padding: 18px;
}

.mini-card strong {
  display: block;
  color: var(--ink);
  font-size: 18px;
}

.mini-card span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.home-album {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.album-track {
  position: relative;
  height: 100%;
  min-height: 300px;
}

.album-slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(18px);
  transition:
    opacity 520ms ease,
    transform 520ms ease,
    visibility 520ms ease;
}

.album-slide.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.album-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.album-image-top {
  object-position: center top;
}

.album-button {
  position: absolute;
  top: 50%;
  z-index: 2;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 999px;
  background: rgba(7, 18, 37, 0.38);
  color: #fff;
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
  transform: translateY(-50%);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.album-button:hover {
  border-color: rgba(255, 255, 255, 0.68);
  background: rgba(7, 18, 37, 0.64);
}

.album-button:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.72);
  outline-offset: 3px;
}

.album-button-prev {
  left: 14px;
}

.album-button-next {
  right: 14px;
}

.album-dots {
  position: absolute;
  right: 18px;
  bottom: 18px;
  z-index: 2;
  display: flex;
  gap: 6px;
  align-items: center;
  padding: 6px 7px;
  border-radius: 999px;
  background: rgba(7, 18, 37, 0.34);
  backdrop-filter: blur(8px);
}

.album-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.48);
  cursor: pointer;
  transition:
    width 180ms ease,
    background 180ms ease;
}

.album-dot.is-active {
  width: 22px;
  background: #fff;
}

.news-toolbar,
.pub-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.chip,
.tab-button {
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.chip:hover,
.tab-button:hover {
  border-color: rgba(47, 95, 153, 0.28);
  color: var(--teal-dark);
  box-shadow: 0 8px 18px rgba(24, 43, 72, 0.08);
  transform: translateY(-1px);
}

.pub-toolbar .tab-button {
  min-height: 44px;
  padding: 10px 16px;
  font-size: 15px;
}

.chip.is-active,
.tab-button.is-active {
  border-color: rgba(47, 95, 153, 0.3);
  background: var(--teal);
  color: #fff;
}

.news-list {
  display: grid;
  gap: 10px;
}

.news-toggle-row,
.list-toggle-row {
  display: flex;
  justify-content: center;
  margin-top: 18px;
}

.news-toggle[hidden],
.project-toggle[hidden],
.pub-toggle[hidden] {
  display: none !important;
}

.news-item {
  position: relative;
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 18px;
  padding: 18px;
  align-items: start;
}

.news-item.is-revealing,
.project-card.is-revealing,
.publication.is-revealing {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(-12px);
  transition:
    max-height 320ms ease,
    opacity 240ms ease,
    transform 320ms ease,
    padding-top 320ms ease,
    padding-bottom 320ms ease;
}

.news-item.is-revealing.is-visible,
.project-card.is-revealing.is-visible,
.publication.is-revealing.is-visible {
  max-height: 900px;
  opacity: 1;
  transform: translateY(0);
}

.news-item.is-collapsing,
.project-card.is-collapsing,
.publication.is-collapsing {
  max-height: var(--collapse-height);
  opacity: 1;
  overflow: hidden;
  transform: translateY(0);
  transition:
    max-height 320ms ease,
    opacity 240ms ease,
    transform 320ms ease;
}

.news-item.is-collapsing.is-hidden,
.project-card.is-collapsing.is-hidden,
.publication.is-collapsing.is-hidden {
  max-height: 0;
  opacity: 0;
  transform: translateY(-12px);
}

.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 30px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--teal-dark);
  font-size: 12px;
  font-weight: 900;
}

.news-item time {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.news-item p {
  margin: 4px 0 0;
}

.news-item p a,
.publication-title-link {
  color: var(--teal-dark);
  font-weight: 900;
  text-decoration: none;
}

.news-item p a:hover,
.publication-title-link:hover,
.publication-title-link:focus-visible {
  color: var(--ink);
  text-decoration: none;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.research-card {
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.research-card img,
.gallery-card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  background: var(--soft);
  transition: transform 220ms ease, filter 220ms ease;
}

.research-card img {
  background: #fff;
}

.research-card img.thumbnail-align-left {
  object-position: left center;
}

.research-card::after,
.gallery-card::after {
  content: "View";
  position: absolute;
  top: 12px;
  right: 12px;
  min-height: 30px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(13, 30, 56, 0.78);
  color: #fff;
  font-size: 12px;
  font-weight: 900;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.research-card:hover,
.research-card:focus-visible,
.gallery-card:hover,
.gallery-card:focus-visible {
  border-color: rgba(47, 95, 153, 0.3);
  box-shadow: 0 20px 36px rgba(24, 43, 72, 0.12);
  transform: translateY(-2px);
}

.research-card:hover img,
.research-card:focus-visible img,
.gallery-card:hover img,
.gallery-card:focus-visible img {
  filter: saturate(1.06) contrast(1.03);
  transform: scale(1.025);
}

.research-card:hover::after,
.research-card:focus-visible::after,
.gallery-card:hover::after,
.gallery-card:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

.research-card div {
  padding: 18px;
}

.research-card h3,
.project-card h3,
.person-card h3,
.publication h3,
.gallery-card h3 {
  margin: 0;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.25;
}

.project-title-ko,
.project-title-en {
  display: block;
}

.project-title-ko {
  font-size: 19px;
}

.project-title-en {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}

.research-card p,
.project-card p,
.person-card p,
.publication p,
.gallery-card p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 22px;
}

.project-card {
  display: flex;
  flex-direction: column;
  padding: 20px;
  border-left: 5px solid var(--teal);
}

.project-card.finished {
  border-left-color: var(--amber);
}

.project-period {
  order: -1;
  margin: 0 0 10px !important;
  color: var(--muted) !important;
  font-size: 12px !important;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.project-period span {
  display: inline-flex;
  margin-left: 6px;
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--teal-dark);
  font-size: 11px;
}

.project-sponsor {
  margin: 16px 0 0 !important;
  color: var(--teal-dark) !important;
  font-size: 13px !important;
  font-weight: 850;
}

.people-section-title,
.pub-group-title {
  margin: 38px 0 16px;
  color: var(--ink);
  font-size: 23px;
  line-height: 1.25;
}

.people-hint {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.people-section-title:first-child,
.pub-group-title:first-child {
  margin-top: 0;
}

.people-hint + .people-section-title {
  margin-top: 0;
}

.people-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 240px));
  justify-content: space-between;
  gap: 20px clamp(18px, 3vw, 42px);
}

.people-grid.supervisors {
  grid-template-columns: repeat(4, minmax(0, 240px));
}

.person-card {
  overflow: hidden;
  cursor: pointer;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease,
    background 180ms ease;
}

.person-card:hover,
.person-card:focus-visible {
  border-color: rgba(47, 95, 153, 0.3);
  background: #fff;
  box-shadow: 0 18px 34px rgba(24, 43, 72, 0.1);
  transform: translateY(-2px);
}

.person-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: center top;
  background: var(--soft);
}

.placeholder-image {
  width: 100%;
  height: 100%;
  min-height: 190px;
  object-fit: cover;
}

.person-card .person-body {
  padding: 14px;
}

.person-card h3 {
  font-size: 16px;
  white-space: nowrap;
}

.person-name-en,
.person-name-ko {
  display: inline;
}

.person-name-ko {
  margin-left: 0.25em;
}

.person-role {
  display: block;
  margin-top: 4px;
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 900;
}

.person-meta {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 14px;
}

.person-card .person-meta,
.person-card .person-email,
.person-card .button-row {
  display: none;
}

.person-meta li + li {
  margin-top: 4px;
}

.career-period {
  color: var(--ink);
  font-weight: 850;
}

.person-meta li:has(.career-period),
.modal-detail-list .career-entry {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
}

.career-detail {
  min-width: 0;
}

.career-period {
  white-space: nowrap;
}

.person-email {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.person-email strong {
  color: var(--ink);
}

.alumni-list {
  columns: 2;
  padding: 22px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.alumni-list li {
  break-inside: avoid;
  margin: 0 0 8px 18px;
}

.pub-panels {
  display: grid;
  gap: 12px;
}

.pub-panel[hidden] {
  display: none;
}

.publication {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px;
}

.publication .date {
  color: var(--coral);
  font-size: 13px;
  font-weight: 900;
}

.publication-title-link {
  margin-left: 4px;
  font-size: 0.88em;
  white-space: nowrap;
}

.publication .venue {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
}

.publication .venue-highlight {
  color: var(--teal-dark);
  font-weight: 950;
}

.link-pill {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 900;
  box-shadow: 0 7px 16px rgba(24, 43, 72, 0.06);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.link-pill:hover,
.link-pill:focus-visible {
  background: var(--teal);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 13px 24px rgba(18, 49, 89, 0.18);
  transform: translateY(-1px);
}

.link-index {
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 18px;
}

.link-index summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 900;
}

.link-index ul {
  margin-bottom: 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.gallery-card {
  margin: 0;
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.gallery-card figcaption {
  padding: 16px;
}

.gallery-card .memory-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.gallery-card .memory-meta span + span {
  flex: 0 0 auto;
  color: var(--teal-dark);
  text-align: right;
}

.gallery-album-card {
  min-height: 0;
}

.gallery-album-track {
  position: relative;
  height: 190px;
  overflow: hidden;
  background: var(--soft);
  touch-action: pan-y;
  user-select: none;
}

.gallery-album-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(14px);
  transition:
    opacity 360ms ease,
    transform 360ms ease,
    visibility 360ms ease;
}

.gallery-album-slide.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.gallery-album-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-album-button {
  position: absolute;
  top: 95px;
  z-index: 3;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  background: rgba(7, 18, 37, 0.42);
  color: #fff;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  transform: translateY(-50%);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.gallery-album-button:hover,
.gallery-album-button:focus-visible {
  border-color: rgba(255, 255, 255, 0.7);
  background: rgba(7, 18, 37, 0.68);
  outline: none;
}

.gallery-album-button-prev {
  left: 12px;
}

.gallery-album-button-next {
  right: 12px;
}

.gallery-album-dots {
  position: absolute;
  right: 14px;
  bottom: 84px;
  z-index: 3;
  display: flex;
  gap: 5px;
  align-items: center;
  padding: 5px 6px;
  border-radius: 999px;
  background: rgba(7, 18, 37, 0.34);
  backdrop-filter: blur(8px);
}

.gallery-album-dot {
  width: 7px;
  height: 7px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.52);
  cursor: pointer;
  transition:
    width 180ms ease,
    background 180ms ease;
}

.gallery-album-dot.is-active {
  width: 19px;
  background: #fff;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.contact-panel {
  box-shadow: none;
}

.media-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 28px;
  background: rgba(6, 17, 36, 0.72);
  backdrop-filter: blur(12px);
}

.media-modal[hidden] {
  display: none !important;
}

.media-modal-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.62fr);
  width: min(1120px, 100%);
  max-height: min(82vh, 780px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 34px 80px rgba(0, 0, 0, 0.34);
}

.media-modal-visual {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  background: #fff;
  touch-action: pan-y;
  user-select: none;
}

.media-modal-card img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: contain;
  object-position: center center;
  background: #fff;
}

.modal-album-button {
  position: absolute;
  top: 50%;
  z-index: 4;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.44);
  border-radius: 999px;
  background: rgba(7, 18, 37, 0.46);
  color: #fff;
  font-size: 32px;
  line-height: 1;
  cursor: pointer;
  transform: translateY(-50%);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.modal-album-button:hover,
.modal-album-button:focus-visible {
  border-color: rgba(255, 255, 255, 0.78);
  background: rgba(7, 18, 37, 0.72);
  outline: none;
}

.modal-album-button-prev {
  left: 18px;
}

.modal-album-button-next {
  right: 18px;
}

.modal-album-dots {
  position: absolute;
  right: 20px;
  bottom: 18px;
  z-index: 4;
  display: flex;
  gap: 6px;
  align-items: center;
  padding: 7px 8px;
  border-radius: 999px;
  background: rgba(7, 18, 37, 0.38);
  backdrop-filter: blur(8px);
}

.modal-album-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.52);
  cursor: pointer;
  transition:
    width 180ms ease,
    background 180ms ease;
}

.modal-album-dot.is-active {
  width: 22px;
  background: #fff;
}

.media-modal-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  padding: 34px;
}

.media-modal-copy h2 {
  margin: 0;
  color: var(--ink);
  font-size: 26px;
  line-height: 1.2;
}

.media-modal-description {
  margin: 0;
  color: var(--muted);
}

.media-modal-description p {
  margin: 0;
}

.modal-role {
  color: var(--teal-dark);
  font-size: 14px;
  font-weight: 900;
}

.modal-detail-list {
  display: grid;
  gap: 8px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.modal-email {
  margin-top: 10px !important;
  color: var(--text);
  font-size: 14px;
  font-weight: 750;
}

.modal-email strong {
  color: var(--ink);
}

.modal-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.media-modal.is-person-modal .media-modal-card {
  grid-template-columns: minmax(260px, 0.55fr) minmax(320px, 0.9fr);
  width: min(920px, 100%);
}

.media-modal.is-person-modal .media-modal-card img {
  aspect-ratio: 3 / 4;
  min-height: 0;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.media-modal-close {
  position: fixed;
  top: 22px;
  right: 22px;
  z-index: 81;
  min-height: 40px;
  padding: 8px 13px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font: inherit;
  font-size: 13px;
  font-weight: 900;
  cursor: pointer;
  transition: background 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.media-modal-close:hover,
.media-modal-close:focus-visible {
  background: rgba(255, 255, 255, 0.24);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.22);
  transform: translateY(-1px);
}

.contact-panel strong {
  display: block;
  color: var(--ink);
  font-size: 15px;
}

.contact-panel span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
}

.contact-list {
  box-shadow: none;
}

.contact-list p {
  display: grid;
  grid-template-columns: 94px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin: 0;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.contact-list p:first-child {
  padding-top: 0;
}

.contact-list p:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.contact-list strong {
  color: var(--teal-dark);
}

.contact-list p > span {
  margin-top: 0;
}

.contact-list p > span span {
  margin-top: 4px;
}

.contact-benefits {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.lab-author {
  color: var(--ink);
  font-weight: 900;
}

.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.78);
  padding: 34px 0;
}

.footer-inner {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.footer-inner strong {
  color: #fff;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-contacts {
  display: grid;
  grid-template-columns: max-content max-content max-content;
  column-gap: 18px;
  row-gap: 6px;
  align-items: baseline;
}

.footer-contact-row {
  display: contents;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.78);
}

@media (max-width: 980px) {
  .hero {
    min-height: 0;
  }

  .hero-inner {
    padding: 72px 0 36px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-stats,
  .research-grid,
  .contact-benefits,
  .people-grid,
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .people-grid,
  .people-grid.supervisors {
    grid-template-columns: repeat(2, minmax(0, 240px));
    justify-content: space-evenly;
  }

  .section-head,
  .overview-grid {
    grid-template-columns: 1fr;
  }

  .home-album,
  .album-track {
    min-height: 330px;
  }

  .projects-grid,
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .media-modal-card {
    grid-template-columns: 1fr;
    max-height: 86vh;
  }

  .media-modal-visual {
    min-height: 340px;
    max-height: 52vh;
  }

  .media-modal-card img {
    min-height: 340px;
    max-height: 52vh;
  }
}

@media (max-width: 760px) {
  .nav-wrap {
    width: min(100% - 28px, 1160px);
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-links {
    position: absolute;
    top: 68px;
    left: 14px;
    right: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

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

  .nav-links a {
    padding: 12px;
  }

  .hero-inner,
  .section-inner {
    width: min(100% - 28px, 1160px);
  }

  .hero {
    min-height: 0;
  }

  .hero-inner {
    padding: 52px 0 28px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-copy {
    font-size: 16px;
  }

  .hero-stats {
    margin-top: 24px;
  }

  .stat {
    min-height: 78px;
    padding: 14px;
  }

  .section {
    padding: 62px 0;
  }

  .section h2 {
    font-size: 28px;
  }

  .news-toolbar {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 4px;
  }

  .news-toolbar .chip {
    min-width: 0;
    min-height: 32px;
    padding: 6px 2px;
    font-size: 11px;
    line-height: 1.1;
  }

  .pub-toolbar {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 6px;
  }

  .pub-toolbar .tab-button {
    min-width: 0;
    min-height: 34px;
    padding: 6px 4px;
    font-size: 11px;
    line-height: 1.12;
  }

  .pub-toolbar [data-pub-tab="pub-selected"] {
    order: 1;
    grid-column: span 2;
  }

  .pub-toolbar [data-pub-tab="pub-journal"] {
    order: 2;
    grid-column: span 2;
  }

  .pub-toolbar [data-pub-tab="pub-patents"] {
    order: 3;
    grid-column: span 2;
  }

  .pub-toolbar [data-pub-tab="pub-international"] {
    order: 4;
    grid-column: span 3;
  }

  .pub-toolbar [data-pub-tab="pub-domestic"] {
    order: 5;
    grid-column: span 3;
  }

  .hero-stats,
  .research-grid,
  .projects-grid,
  .gallery-grid,
  .contact-benefits,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .home-album,
  .album-track {
    min-height: 270px;
  }

  .album-button {
    width: 34px;
    height: 34px;
    font-size: 26px;
  }

  .people-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px 6px;
    justify-content: stretch;
  }

  .people-grid.supervisors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .person-card .person-body {
    padding: 8px 4px;
  }

  .people-grid.supervisors .person-card .person-body {
    padding: 10px 8px;
  }

  .person-card h3 {
    font-size: 11px;
    line-height: 1.18;
    white-space: nowrap;
  }

  .people-grid.supervisors .person-card h3 {
    font-size: 14px;
  }

  .person-name-en,
  .person-name-ko {
    display: block;
  }

  .person-name-ko {
    margin-left: 0;
    margin-top: 2px;
    color: var(--muted);
    font-size: 0.94em;
  }

  .person-role {
    display: block;
    margin-top: 5px;
    font-size: 9px;
    line-height: 1.16;
    white-space: nowrap;
  }

  .people-grid.supervisors .person-role {
    font-size: 12px;
  }

  .news-item {
    grid-template-columns: 1fr;
  }

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

  .contact-list p {
    grid-template-columns: 1fr;
  }

  .media-modal {
    padding: 10px;
  }

  .media-modal-card {
    width: min(100%, 460px);
    max-height: calc(100dvh - 20px);
    overflow: hidden;
  }

  .media-modal-visual {
    min-height: 0;
    height: min(42dvh, 260px);
    max-height: min(42dvh, 260px);
  }

  .media-modal-card img {
    min-height: 0;
    height: min(42dvh, 260px);
    max-height: min(42dvh, 260px);
  }

  .modal-album-button {
    width: 34px;
    height: 34px;
    font-size: 26px;
  }

  .modal-album-button-prev {
    left: 12px;
  }

  .modal-album-button-next {
    right: 12px;
  }

  .modal-album-dots {
    right: 12px;
    bottom: 12px;
  }

  .media-modal-copy {
    min-height: 0;
    overflow: auto;
    gap: 8px;
    padding: 18px;
  }

  .media-modal-copy h2 {
    font-size: 21px;
  }

  .media-modal-description,
  .media-modal-description p {
    font-size: 13px;
    line-height: 1.35;
  }

  .media-modal.is-person-modal .media-modal-card {
    grid-template-columns: 1fr;
    width: min(100%, 380px);
    max-height: calc(100dvh - 20px);
  }

  .media-modal.is-person-modal .media-modal-card img {
    width: 100%;
    height: min(32dvh, 250px);
    max-height: min(32dvh, 250px);
    object-fit: contain;
    object-position: center center;
    background: var(--soft);
  }

  .media-modal.is-person-modal .media-modal-copy h2 {
    font-size: 19px;
  }

  .media-modal.is-person-modal .modal-role,
  .media-modal.is-person-modal .modal-email {
    font-size: 12px;
  }

  .media-modal.is-person-modal .modal-detail-list {
    gap: 5px;
    font-size: 12px;
    line-height: 1.3;
  }

  .media-modal.is-person-modal .modal-detail-list .career-entry {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 12px;
  }

  .media-modal.is-person-modal .modal-link-row {
    gap: 6px;
    margin-top: 8px;
  }

  .media-modal.is-person-modal .link-pill {
    min-height: 28px;
    padding: 5px 8px;
    font-size: 12px;
  }

  .media-modal-close {
    top: 8px;
    right: 8px;
    min-height: 34px;
    padding: 6px 10px;
    font-size: 12px;
  }

  .alumni-list {
    columns: 1;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 540px) {
  .people-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    justify-content: stretch;
  }

  .people-grid.supervisors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .brand-logo {
    width: 82px;
    height: 38px;
  }

  .footer-contacts {
    grid-template-columns: max-content minmax(0, 1fr);
    column-gap: 14px;
  }

  .footer-contact-row {
    display: grid;
    grid-column: 1 / -1;
    grid-template-columns: subgrid;
    row-gap: 2px;
  }

  .footer-contact-row a:last-child {
    grid-column: 2;
  }
}