:root {
  color-scheme: light;
  --bg: #f3fbf6;
  --surface: #ffffff;
  --text: #1a1a1f;
  --muted: #5a5f6a;
  --primary: #6abf8b;
  --primary-dark: #4fa774;
  --border: #dbeee2;
  --shadow: 0 12px 32px rgba(28, 33, 45, 0.08);
}

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

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

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  margin: 0;
  padding-left: 1.2rem;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 0;
  gap: 2rem;
  flex-wrap: wrap;
}

.identity {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.avatar {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 600;
  font-size: 1.25rem;
  box-shadow: var(--shadow);
}

.subtitle {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  font-weight: 500;
}

.site-nav a {
  color: var(--muted);
  transition: color 0.2s ease;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.lang-toggle {
  display: inline-flex;
  gap: 0.2rem;
  padding: 0.2rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
}

.lang-button {
  border: none;
  background: transparent;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.lang-button.active {
  background: var(--primary);
  color: #fff;
}

.lang-button:hover {
  color: var(--primary-dark);
}

.section {
  padding: 4.5rem 0;
}

.section.alt {
  background: var(--surface);
}

.section h2 {
  margin-top: 0;
  font-size: clamp(1.6rem, 1.2rem + 1vw, 2.2rem);
}

.section-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  align-items: start;
}

.highlight-card {
  background: var(--surface);
  border-radius: 20px;
  padding: 1.6rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.button-row {
  display: flex;
  gap: 0.8rem;
  margin-top: 1.4rem;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.button.primary {
  background: var(--primary);
  color: #fff;
}

.button.primary:hover {
  background: var(--primary-dark);
}

.button.ghost {
  border-color: var(--border);
  color: var(--text);
  background: #fff;
}

.button.ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.card-grid {
  display: grid;
  gap: 1.6rem;
  margin-top: 1.8rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: var(--surface);
  border-radius: 18px;
  padding: 1.5rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.card h3 {
  margin-top: 0;
}

.tags {
  list-style: none;
  display: flex;
  gap: 0.6rem;
  padding: 0;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.tags li {
  background: #e8f7ef;
  color: #2f7a54;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}

.publication {
  padding: 1.4rem;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  margin-top: 1.4rem;
}

.pub-meta {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.9rem;
}

.pub-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: 0.4rem;
}

.pub-authors {
  color: var(--muted);
  margin-top: 0.4rem;
}

.author-you {
  font-weight: 700;
  color: var(--text);
}

.pub-venue {
  color: var(--muted);
  margin-top: 0.35rem;
  font-size: 0.95rem;
}

.pub-links {
  display: flex;
  gap: 1rem;
  margin-top: 0.8rem;
  flex-wrap: wrap;
}

.pub-links a {
  color: var(--primary);
  font-weight: 600;
}

.text-link {
  color: var(--primary);
  font-weight: 600;
}

.split-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 1.6rem;
}

.contact-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 1.6rem;
}

.contact-list {
  display: grid;
  gap: 1rem;
  margin-top: 1.2rem;
}

.label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.inline-links {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.site-footer {
  background: #0f172a;
  color: #e2e8f0;
  padding: 2rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 720px) {
  .site-nav {
    gap: 0.8rem;
  }

  .header-inner {
    padding: 1rem 0;
  }
}