:root {
  --bg: #f7f5f0;
  --panel: #ffffff;
  --ink: #1f2933;
  --muted: #64707d;
  --line: #d8dee5;
  --accent: #246a73;
  --accent-strong: #174f57;
  --warm: #b85c38;
  --shadow: 0 18px 45px rgba(31, 41, 51, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-shell {
  display: grid;
  grid-template-columns: minmax(260px, 340px) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 56px);
  width: min(1180px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: clamp(18px, 4vw, 48px) 0;
}

.profile-sidebar {
  align-self: start;
  position: sticky;
  top: 24px;
  display: grid;
  gap: 22px;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.photo-frame {
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  background: #e7ecec;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.photo-frame img,
.photo-placeholder {
  width: 100%;
  height: 100%;
}

.photo-frame img {
  display: block;
  object-fit: cover;
}

.photo-placeholder {
  display: grid;
  place-items: center;
  color: var(--accent-strong);
  font-size: clamp(3rem, 16vw, 6.5rem);
  font-weight: 800;
  background:
    linear-gradient(135deg, rgba(36, 106, 115, 0.16), rgba(184, 92, 56, 0.15)),
    #eef2f1;
}

.identity h1 {
  margin: 0;
  font-size: clamp(1.65rem, 4vw, 2.15rem);
  line-height: 1.1;
}

.identity .role {
  display: block;
  margin: 0.15rem 0;
  line-height: 1.35;
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
  max-height: none;
  height: auto;
  -webkit-line-clamp: unset;
  line-clamp: unset;
  -webkit-box-orient: unset;
}

.roles {
  margin-top: 0.35rem;
}

.role {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
  max-width: 100%;
  overflow-wrap: anywhere;
  hyphens: auto;
}

.profile-links {
  display: grid;
  gap: 10px;
}

.profile-links a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--accent-strong);
  text-decoration: none;
  font-weight: 700;
}

.profile-links a:focus-visible,
.profile-links a:hover {
  border-color: var(--accent);
  outline: none;
}

.link-mark {
  display: inline-grid;
  place-items: center;
  flex: 0 0 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
}

.metrics-widget {
  display: grid;
  gap: 16px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.metrics-widget h2,
.metrics-widget p,
.metrics-widget dl {
  margin: 0;
}

.metrics-widget h2 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.metrics-widget p {
  color: var(--muted);
  font-size: 0.9rem;
}

.metrics-widget dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.metrics-widget dl > div {
  padding: 14px;
  background: #f3f7f6;
  border-radius: 8px;
}

.metrics-widget dt {
  color: var(--muted);
  font-size: 0.82rem;
}

.metrics-widget dd {
  margin: 2px 0 0;
  color: var(--accent-strong);
  font-size: 1.55rem;
  font-weight: 800;
  line-height: 1.15;
}

.flip-number {
  display: inline-block;
  min-width: 3ch;
  transform-origin: 50% 70%;
}

.flip-number.is-flipping {
  animation: metric-flip 180ms ease-out;
}

@keyframes metric-flip {
  0% {
    opacity: 0.35;
    transform: rotateX(82deg) translateY(-2px);
  }

  100% {
    opacity: 1;
    transform: rotateX(0deg) translateY(0);
  }
}

.content-panel {
  min-width: 0;
  display: grid;
  grid-template-rows: auto;
  gap: 28px;
}

.topbar {
  display: flex;
  justify-content: flex-start;
  position: sticky;
  top: 24px;
  z-index: 10;
}

.tabs {
  display: inline-flex;
  gap: 8px;
  padding: 6px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 22px rgba(31, 41, 51, 0.06);
}

.tab-button {
  min-height: 42px;
  padding: 0 16px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 750;
}

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

.tab-button:focus-visible {
  outline: 3px solid rgba(36, 106, 115, 0.28);
  outline-offset: 2px;
}

.tab-panel {
  max-width: 860px;
  min-height: calc(100vh - 96px);
  padding: 12px 0 72px;
  scroll-margin-top: 112px;
}

.tab-panel.is-active {
  display: block;
}

.kicker {
  margin: 0 0 12px;
  color: var(--warm);
  font-size: 0.86rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.tab-panel h2 {
  margin: 0 0 24px;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.05;
}

.rich-text {
  font-size: clamp(1rem, 2vw, 1.12rem);
}

.rich-text p,
.rich-text ul {
  margin: 0 0 18px;
}

.rich-text ul {
  padding-left: 1.2rem;
}

.rich-text li + li {
  margin-top: 10px;
}

.research-intro {
  max-width: 680px;
}

.publication-topics {
  display: grid;
  gap: 14px;
  max-width: 860px;
  margin-top: 28px;
}

.topic-card {
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 26px rgba(31, 41, 51, 0.06);
}

.topic-card[open] {
  border-color: rgba(36, 106, 115, 0.45);
}

.topic-card summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 88px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

.topic-card summary::-webkit-details-marker {
  display: none;
}

.topic-card summary::before {
  content: "+";
  display: inline-grid;
  place-items: center;
  flex: 0 0 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent-strong);
  font-size: 1.15rem;
  font-weight: 750;
}

.topic-card[open] summary::before {
  content: "-";
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.topic-card summary > span:first-of-type {
  flex: 1;
  min-width: 0;
}

.topic-card summary strong {
  display: block;
  font-size: clamp(1rem, 2vw, 1.18rem);
  line-height: 1.25;
}

.topic-card summary small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.paper-count {
  flex: 0 0 auto;
  padding: 5px 10px;
  background: #f3f7f6;
  border-radius: 999px;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 800;
  white-space: nowrap;
}

.publication-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0 20px 18px 64px;
  list-style-position: outside;
}

.publication-list li {
  padding: 15px 0;
  border-top: 1px solid var(--line);
}

.publication-list a {
  color: var(--accent-strong);
  font-weight: 800;
  line-height: 1.35;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.publication-list a:hover,
.publication-list a:focus-visible {
  color: var(--warm);
}

.publication-list span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.45;
}

@media (max-width: 800px) {
  .site-shell {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .profile-sidebar {
    position: static;
  }

  .photo-frame {
    max-width: 260px;
  }

  .tabs {
    width: 100%;
  }

  .tab-button {
    flex: 1;
  }

  .topic-card summary {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .paper-count {
    margin-left: 48px;
  }

  .publication-list {
    padding-left: 44px;
  }
}