:root {
  --bg: #f4f5f1;
  --surface: #ffffff;
  --surface-soft: #f9faf7;
  --ink: #17201b;
  --muted: #65706a;
  --line: #dfe4dc;
  --accent: #245b47;
  --accent-2: #9a5b2f;
  --accent-3: #295f8a;
  --shadow: 0 18px 50px rgba(34, 48, 38, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 0%, rgba(36, 91, 71, 0.12), transparent 34rem),
    linear-gradient(180deg, #fbfcf8 0%, var(--bg) 46%, #eef2f2 100%);
  font-family: Inter, "Noto Sans SC", Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 1.1rem;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  background: rgba(244, 245, 241, 0.84);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(223, 228, 220, 0.78);
}

.brand {
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0;
}

.nav {
  display: flex;
  gap: 1rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.nav a {
  text-decoration: none;
}

.nav a:hover {
  color: var(--accent);
}

.icon-btn {
  min-width: 3.2rem;
  height: 2.2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-weight: 700;
  cursor: pointer;
}

.page-shell {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 2rem;
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.2rem 1.25rem 3rem;
}

.profile-panel {
  position: sticky;
  top: 5.25rem;
  align-self: start;
  padding: 1.4rem;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.avatar {
  width: 100%;
  aspect-ratio: 1 / 1.05;
  object-fit: cover;
  object-position: center 18%;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.profile-panel h1 {
  margin: 1rem 0 0.2rem;
  font-size: 2rem;
  line-height: 1.08;
}

.role {
  margin: 0;
  color: var(--accent);
  font-weight: 700;
}

.affiliation {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.quick-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.55rem;
  margin: 1.2rem 0;
}

.quick-stats div {
  min-height: 4.6rem;
  padding: 0.7rem 0.55rem;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.quick-stats strong,
.quick-stats span {
  display: block;
}

.quick-stats strong {
  font-size: 0.9rem;
}

.quick-stats span {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.profile-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.55rem;
}

.profile-links a,
.primary-link,
.secondary-link {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 2.5rem;
  padding: 0.56rem 0.78rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
}

.profile-links a {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--accent);
  font-size: 0.9rem;
}

.profile-links a:hover,
.secondary-link:hover {
  border-color: rgba(36, 91, 71, 0.42);
}

.side-section {
  margin-top: 1.25rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}

.side-section h2 {
  margin: 0 0 0.8rem;
  font-size: 1rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tags span {
  padding: 0.34rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  color: var(--muted);
  font-size: 0.82rem;
}

.content {
  display: grid;
  gap: 1rem;
}

.hero-section,
.section-block {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 36px rgba(34, 48, 38, 0.07);
}

.hero-section {
  padding: 2rem;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent-2);
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-section h2 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2rem, 4.3vw, 4rem);
  line-height: 1.04;
}

.hero-section p:not(.eyebrow) {
  max-width: 760px;
  margin: 1.1rem 0 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.3rem;
}

.primary-link {
  background: var(--accent);
  color: white;
}

.secondary-link {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--accent);
}

.section-block {
  padding: 1.45rem;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: end;
  margin-bottom: 1rem;
}

.section-heading.compact {
  margin-bottom: 0.6rem;
}

.section-heading h2 {
  margin: 0;
  font-size: 1.35rem;
}

.section-heading p {
  max-width: 25rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  text-align: right;
}

.impact-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  padding: 0.85rem;
  background: #15251f;
  color: white;
}

.impact-strip div {
  min-height: 7.3rem;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.impact-strip strong {
  display: block;
  font-size: 2rem;
  line-height: 1;
}

.impact-strip span {
  display: block;
  margin-top: 0.55rem;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9rem;
}

.timeline {
  display: grid;
  gap: 0.78rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 5.2rem 1fr;
  gap: 0.95rem;
  align-items: start;
  padding-bottom: 0.78rem;
  border-bottom: 1px solid var(--line);
}

.timeline li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.timeline time {
  color: var(--accent-2);
  font-weight: 800;
  font-size: 0.9rem;
}

.publication-list {
  display: grid;
  gap: 0.85rem;
}

.publication {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
}

.pub-venue {
  align-self: start;
  padding: 0.42rem 0.55rem;
  border-radius: 8px;
  background: rgba(36, 91, 71, 0.1);
  color: var(--accent);
  font-weight: 800;
  text-align: center;
  font-size: 0.86rem;
}

.publication.featured .pub-venue {
  background: #17201b;
  color: white;
}

.pub-title {
  display: inline;
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.35;
}

.pub-headline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.citation-badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.55rem;
  padding: 0.18rem 0.45rem;
  border-radius: 8px;
  background: rgba(154, 91, 47, 0.12);
  color: var(--accent-2);
  font-size: 0.78rem;
  font-weight: 800;
}

.pub-title a {
  text-decoration: none;
}

.pub-title a:hover {
  color: var(--accent);
}

.pub-authors,
.pub-highlight {
  margin: 0.32rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

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

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.7rem;
}

.pub-links a {
  padding: 0.28rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--accent-3);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 700;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.detail-list,
.plain-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.detail-list {
  display: grid;
  gap: 0.78rem;
}

.detail-list li {
  padding-left: 0.85rem;
  border-left: 3px solid rgba(36, 91, 71, 0.22);
}

.detail-list strong,
.detail-list span {
  display: block;
}

.detail-list span,
.plain-list li {
  color: var(--muted);
}

.plain-list li {
  margin: 0.48rem 0;
}

.repo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.repo {
  min-height: 8.5rem;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
  text-decoration: none;
}

.repo strong {
  display: block;
  margin-bottom: 0.35rem;
}

.repo div {
  color: var(--muted);
  font-size: 0.9rem;
}

.repo small {
  display: inline-block;
  margin-top: 0.6rem;
  color: var(--accent-2);
  font-weight: 800;
}

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

.footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.4rem 1.25rem 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 920px) {
  .topbar {
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

  .page-shell {
    grid-template-columns: 1fr;
  }

  .profile-panel {
    position: static;
  }

  .avatar {
    max-height: 28rem;
  }

  .impact-strip,
  .two-column,
  .repo-grid {
    grid-template-columns: 1fr;
  }

  .section-heading {
    display: block;
  }

  .section-heading p {
    margin-top: 0.25rem;
    text-align: left;
  }
}

@media (max-width: 620px) {
  .page-shell {
    padding: 1rem 0.8rem 2rem;
  }

  .topbar {
    padding: 0.85rem 0.8rem;
  }

  .hero-section,
  .section-block,
  .profile-panel {
    padding: 1rem;
  }

  .hero-section h2 {
    font-size: 2.15rem;
  }

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

  .pub-venue {
    justify-self: start;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 0.12rem;
  }
}