/* ========== Reset & Base ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #2c2c2c;
  --color-text-secondary: #666;
  --color-accent: #1a56db;
  --color-accent-light: #e8f0fe;
  --color-border: #e5e7eb;
  --color-link: #1a56db;
  --color-link-hover: #0f3a8a;
  --color-badge: #1a56db;
  --color-highlight: #c05b4d;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Lora', Georgia, 'Times New Roman', serif;
  --max-width: 820px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--color-link-hover);
}

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

/* ========== Layout ========== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 60px 24px 80px;
}

/* ========== Profile Section ========== */
.profile {
  display: flex;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}

.profile-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 3px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}
.profile-photo:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}

.profile-info {
  flex: 1;
  padding-top: 8px;
}

.profile-name-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}

.profile-name {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.profile-name-cn {
  font-family: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  font-size: 1.65rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.12em;
}

.profile-title {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

.profile-meta {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.profile-meta a {
  color: var(--color-link);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}
.profile-meta a:hover {
  border-bottom-color: var(--color-link-hover);
}

.profile-links {
  display: flex;
  gap: 16px;
  margin-top: 10px;
}

.profile-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 6px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  transition: background var(--transition), transform var(--transition);
}
.profile-links a:hover {
  background: #d4e4fd;
  transform: translateY(-1px);
}

.profile-links a svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ========== Bio ========== */
.bio {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 48px;
  padding: 20px 24px;
  background: var(--color-surface);
  border-radius: 10px;
  border: 1px solid var(--color-border);
}

/* ========== Section ========== */
.section {
  margin-bottom: 44px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-text);
  display: inline-block;
}

/* ========== News ========== */
.news-list {
  list-style: none;
}

.news-item {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
  transition: background var(--transition);
}
.news-item:last-child {
  border-bottom: none;
}

.news-date {
  flex-shrink: 0;
  width: 100px;
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

.news-content {
  color: var(--color-text);
}

.news-content a {
  font-weight: 600;
}

/* ========== Education ========== */
.edu-item {
  padding: 16px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 12px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.edu-item:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
  transform: translateY(-1px);
}

.edu-school {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.edu-detail {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========== Publications ========== */
.pub-year {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-top: 24px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.pub-year:first-child {
  margin-top: 0;
}

.pub-item {
  padding: 16px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 10px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.pub-item:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transform: translateY(-2px);
  border-color: #c8d4e8;
}

.pub-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 6px;
  line-height: 1.5;
  color: var(--color-text);
}

.pub-authors {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  line-height: 1.6;
}

.pub-authors .me {
  font-weight: 700;
  color: var(--color-text);
}

.pub-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.pub-venue {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  background: var(--color-badge);
  padding: 2px 10px;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.pub-award {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-highlight);
}

.pub-links {
  display: inline-flex;
  gap: 6px;
  margin-left: auto;
}

.pub-links a {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-highlight);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}
.pub-links a:hover {
  background: #fdf0ee;
  border-color: #e8c5c0;
  color: var(--color-highlight);
}

/* ========== Experience ========== */
.exp-item {
  padding: 16px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 10px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.exp-item:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
  transform: translateY(-1px);
}

.exp-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.exp-detail {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.exp-detail a {
  color: var(--color-link);
}

/* ========== Honors ========== */
.honor-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 0.9rem;
  transition: box-shadow var(--transition), transform var(--transition);
}
.honor-item:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
  transform: translateY(-1px);
}

.honor-name {
  font-weight: 600;
}

.honor-year {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  flex-shrink: 0;
  margin-left: 16px;
}

/* ========== Services ========== */
.service-list {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  padding: 12px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

/* ========== Footer ========== */
.footer {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  text-align: center;
}

/* ========== Responsive ========== */
@media (max-width: 640px) {
  .container {
    padding: 32px 16px 60px;
  }

  .profile {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
  }

  .profile-photo {
    width: 140px;
    height: 140px;
  }

  .profile-name-row {
    justify-content: center;
  }

  .profile-links {
    justify-content: center;
  }

  .profile-name {
    font-size: 1.6rem;
  }

  .pub-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .pub-links {
    margin-left: 0;
  }

  .honor-item {
    flex-direction: column;
    gap: 2px;
  }

  .honor-year {
    margin-left: 0;
  }

  .news-item {
    flex-direction: column;
    gap: 4px;
  }

  .news-date {
    width: auto;
  }
}