:root {
  color-scheme: light;
  --bg: #f7f8f7;
  --surface: #ffffff;
  --surface-muted: #f0f3f2;
  --ink: #171b1a;
  --muted: #5f6966;
  --line: #d8dfdc;
  --teal: #187d70;
  --brick: #a94f35;
  --gold: #b78520;
  --blue: #315c82;
  --shadow: 0 14px 34px rgba(23, 27, 26, 0.08);
  --radius: 8px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: 16px;
  z-index: 20;
  transform: translateY(-140%);
  border-radius: 4px;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
  text-decoration: none;
}

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

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.header-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 40px;
  margin: 0 auto;
  max-width: 1180px;
  padding: 60px 28px 38px;
}

.header-tools {
  position: absolute;
  top: 18px;
  right: 28px;
  z-index: 2;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--teal);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  max-width: 840px;
  font-size: 3.05rem;
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: 1.55rem;
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.35;
  letter-spacing: 0;
}

.profile-title {
  margin: 14px 0 0;
  color: var(--brick);
  font-size: 1.05rem;
  font-weight: 800;
}

.profile-summary {
  margin: 18px 0 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 1rem;
}

.language-toggle {
  display: flex;
  justify-content: flex-end;
}

.language-switch {
  position: relative;
  display: inline-flex;
  width: 76px;
  height: 34px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--muted);
  cursor: pointer;
  overflow: hidden;
  padding: 3px;
  box-shadow: inset 0 1px 2px rgba(23, 27, 26, 0.06);
}

.language-switch::before {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 34px;
  height: 26px;
  border-radius: 999px;
  background: var(--ink);
  box-shadow: 0 4px 10px rgba(23, 27, 26, 0.16);
  content: "";
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.language-switch.is-en::before {
  transform: translateX(34px);
}

.language-switch:hover {
  border-color: var(--ink);
}

.language-switch-track {
  position: relative;
  z-index: 1;
  display: grid;
  width: 100%;
  grid-template-columns: 1fr 1fr;
  align-items: center;
}

.language-option {
  display: grid;
  place-items: center;
  height: 26px;
  line-height: 1;
  transition: color 160ms ease;
}

.flag-icon {
  display: block;
  width: 24px;
  height: 16px;
  border-radius: 3px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.58);
}

.language-switch.is-ko .language-option-ko,
.language-switch.is-en .language-option-en {
  color: #fff;
}

.language-switch.is-ko .language-option-en,
.language-switch.is-en .language-option-ko {
  color: var(--muted);
}

.profile-panel,
.overview-band,
.sidebar,
.publication-section {
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

body.is-language-fading .profile-panel,
body.is-language-fading .overview-band,
body.is-language-fading .sidebar,
body.is-language-fading .publication-section {
  transform: translateY(5px);
  opacity: 0;
}

@supports (view-transition-name: root) {
  .profile-panel {
    view-transition-name: profile-panel;
  }

  .overview-band {
    view-transition-name: overview-band;
  }

  .sidebar {
    view-transition-name: research-sidebar;
  }

  .publication-section {
    view-transition-name: publication-section;
  }

  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: 1ms;
  }

  ::view-transition-group(profile-panel),
  ::view-transition-group(overview-band),
  ::view-transition-group(research-sidebar),
  ::view-transition-group(publication-section) {
    animation-duration: 420ms;
    animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  }

  ::view-transition-old(profile-panel),
  ::view-transition-old(overview-band),
  ::view-transition-old(research-sidebar),
  ::view-transition-old(publication-section) {
    animation: language-out 210ms cubic-bezier(0.4, 0, 1, 1) both;
  }

  ::view-transition-new(profile-panel),
  ::view-transition-new(overview-band),
  ::view-transition-new(research-sidebar),
  ::view-transition-new(publication-section) {
    animation: language-in 360ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
  }
}

@keyframes language-out {
  from {
    transform: translateY(0);
    opacity: 1;
    filter: blur(0);
  }

  to {
    transform: translateY(-5px);
    opacity: 0;
    filter: blur(2px);
  }
}

@keyframes language-in {
  from {
    transform: translateY(8px);
    opacity: 0;
    filter: blur(2px);
  }

  to {
    transform: translateY(0);
    opacity: 1;
    filter: blur(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .profile-panel,
  .overview-band,
  .sidebar,
  .publication-section {
    transition: none;
  }

  ::view-transition-group(root),
  ::view-transition-group(profile-panel),
  ::view-transition-group(overview-band),
  ::view-transition-group(research-sidebar),
  ::view-transition-group(publication-section),
  ::view-transition-old(root),
  ::view-transition-old(profile-panel),
  ::view-transition-old(overview-band),
  ::view-transition-old(research-sidebar),
  ::view-transition-old(publication-section),
  ::view-transition-new(root),
  ::view-transition-new(profile-panel),
  ::view-transition-new(overview-band),
  ::view-transition-new(research-sidebar),
  ::view-transition-new(publication-section) {
    animation-duration: 1ms !important;
  }
}

.profile-panel {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  grid-template-areas:
    "photo list"
    "actions actions";
  column-gap: 18px;
  row-gap: 16px;
  align-items: center;
  align-self: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
  padding: 20px;
}

.avatar-mark {
  grid-area: photo;
  justify-self: center;
  width: 104px;
  height: 104px;
  overflow: hidden;
  border: 3px solid #fff;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 1px var(--line);
}

.avatar-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.profile-list {
  grid-area: list;
  display: grid;
  gap: 12px;
  margin: 0;
}

.profile-list div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.profile-list div:first-child {
  border-top: 0;
  padding-top: 0;
}

.profile-list dt {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.profile-list dd {
  margin: 0;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.header-actions {
  grid-area: actions;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.icon-button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--ink);
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  padding: 8px 12px;
  text-decoration: none;
}

.icon-button.secondary {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

.icon-button[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.42;
}

.button-icon {
  display: inline-flex;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.button-icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.overview-band {
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0 auto;
  max-width: 1180px;
  padding: 0 28px;
}

.metric {
  min-height: 96px;
  border-left: 1px solid var(--line);
  padding: 18px 24px;
}

.metric:last-child {
  border-right: 1px solid var(--line);
}

.metric strong {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--ink);
  font-size: 2rem;
  line-height: 1;
}

.metric-note {
  color: var(--teal);
  font-size: 0.44em;
  font-weight: 900;
  line-height: 1;
  white-space: nowrap;
}

.metric span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.content-grid {
  display: grid;
  grid-template-columns: 284px minmax(0, 1fr);
  gap: 44px;
  margin: 0 auto;
  max-width: 1180px;
  padding: 44px 28px 64px;
}

.sidebar {
  display: grid;
  align-self: start;
  gap: 28px;
  position: sticky;
  top: 20px;
}

.sidebar-section {
  border-top: 2px solid var(--ink);
  padding-top: 16px;
}

.sidebar-section h2 {
  margin-bottom: 14px;
  font-size: 0.9rem;
  text-transform: uppercase;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 800;
  padding: 6px 10px;
}

.timeline {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
}

.timeline-year {
  color: var(--brick);
  font-size: 0.88rem;
  font-weight: 900;
}

.timeline-title {
  margin: 0;
  font-weight: 800;
}

.timeline-meta {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.link-stack {
  display: grid;
  gap: 8px;
}

.text-link {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.text-link::after {
  content: "↗";
  color: var(--teal);
  font-size: 0.86rem;
}

.publication-section {
  min-width: 0;
}

.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}

.view-toggle {
  display: inline-flex;
  overflow: hidden;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
}

.section-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.toggle-button {
  min-width: 72px;
  min-height: 38px;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-weight: 800;
  padding: 8px 12px;
}

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

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: -6px 0 22px;
}

.filter-button {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 900;
  padding: 6px 11px;
}

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

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

.publication-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 10px 22px rgba(23, 27, 26, 0.05);
  padding: 24px 26px;
}

.publication-cover {
  display: none;
}

.cover-index {
  position: absolute;
  left: 12px;
  top: 12px;
  display: grid;
  width: 44px;
  height: 44px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: #fff;
  font-weight: 900;
  place-items: center;
}

.publication-body {
  min-width: 0;
}

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

.badge {
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  padding: 4px 9px;
}

.badge.status {
  background: rgba(24, 125, 112, 0.12);
  color: var(--teal);
}

.badge.status-published {
  background: rgba(24, 125, 112, 0.12);
  color: var(--teal);
}

.badge.status-accepted {
  background: rgba(49, 92, 130, 0.14);
  color: var(--blue);
}

.badge.status-under-review {
  background: rgba(185, 133, 32, 0.18);
  color: #8a6417;
}

.badge.status-manuscript {
  background: rgba(95, 105, 102, 0.14);
  color: #46504d;
}

.badge.journal-index-sci-journal {
  background: rgba(49, 92, 130, 0.14);
  color: var(--blue);
}

.badge.journal-index-conference {
  background: rgba(95, 105, 102, 0.14);
  color: #46504d;
}

.badge.role {
  background: rgba(169, 79, 53, 0.12);
  color: var(--brick);
}

.authors {
  margin: 10px 0 0;
  color: var(--muted);
  font-weight: 700;
}

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

.venue {
  margin: 4px 0 0;
  color: var(--blue);
  font-weight: 900;
}

.abstract {
  margin: 16px 0 0;
  color: #36413d;
}

.contribution-list {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.contribution-list li {
  position: relative;
  padding-left: 18px;
}

.contribution-list li::before {
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  content: "";
}

.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.citation {
  display: none;
  margin: 18px 0 0;
  border-left: 3px solid var(--teal);
  background: var(--surface-muted);
  color: #36413d;
  padding: 12px 14px;
  font-size: 0.9rem;
}

.publication-card.is-citation-open .citation {
  display: block;
}

.publication-list.is-compact .publication-card {
  grid-template-columns: 1fr;
  gap: 0;
}

.publication-list.is-compact .publication-cover,
.publication-list.is-compact .abstract,
.publication-list.is-compact .contribution-list,
.publication-list.is-compact .paper-actions,
.publication-list.is-compact .citation {
  display: none;
}

.publication-list.is-compact .publication-card {
  padding: 18px 20px;
}

.empty-state {
  margin: 0;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--muted);
  font-weight: 800;
  padding: 18px;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 30;
  max-width: min(360px, calc(100vw - 40px));
  transform: translateY(140%);
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  opacity: 0;
  padding: 12px 14px;
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.toast.is-visible {
  transform: translateY(0);
  opacity: 1;
}

:focus-visible {
  outline: 3px solid rgba(24, 125, 112, 0.35);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .header-inner,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    padding-top: 58px;
  }

  h1 {
    font-size: 2.35rem;
  }

  .profile-panel {
    max-width: 520px;
  }

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

  .metric:nth-child(2) {
    border-right: 1px solid var(--line);
  }

  .sidebar {
    position: static;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

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

@media (max-width: 680px) {
  body {
    font-size: 15px;
  }

  .header-inner,
  .content-grid,
  .overview-grid {
    padding-right: 18px;
    padding-left: 18px;
  }

  .header-inner,
  .content-grid {
    gap: 28px;
  }

  .header-tools {
    right: 18px;
    top: 16px;
  }

  h1 {
    font-size: 2rem;
  }

  .profile-panel {
    grid-template-columns: minmax(0, 1fr) 88px;
    grid-template-areas:
      "list photo"
      "actions actions";
    align-items: start;
    gap: 16px;
  }

  .avatar-mark {
    justify-self: end;
    width: 88px;
    height: 88px;
  }

  .profile-list div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .overview-band {
    background: var(--bg);
  }

  .overview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding-top: 18px;
    padding-bottom: 18px;
  }

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

  .publication-section {
    order: 1;
  }

  .sidebar {
    order: 2;
  }

  .metric,
  .metric:nth-child(2),
  .metric:last-child {
    min-height: 86px;
    border: 1px solid var(--line);
    border-right: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    padding: 16px 18px;
  }

  .metric strong {
    font-size: 1.54rem;
    white-space: nowrap;
  }

  .section-header {
    align-items: stretch;
    flex-direction: column;
  }

  .view-toggle {
    width: 100%;
  }

  .toggle-button {
    flex: 1;
  }

  .publication-card {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .publication-cover {
    min-height: 164px;
  }

  .icon-button {
    width: 100%;
  }
}

@media print {
  body {
    background: #fff;
  }

  .skip-link,
  .header-actions,
  .language-toggle,
  .view-toggle,
  .paper-actions,
  .toast {
    display: none !important;
  }

  .site-header,
  .overview-band {
    background: #fff;
  }

  .header-inner,
  .content-grid,
  .overview-grid {
    max-width: none;
    padding-right: 0;
    padding-left: 0;
  }

  .header-inner,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    grid-template-columns: repeat(3, 1fr);
  }

  .publication-card {
    break-inside: avoid;
    box-shadow: none;
  }
}