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

body {
  font-family: Georgia, "Times New Roman", "Noto Serif CJK SC", serif;
  font-size: 16px;
  line-height: 1.7;
  color: #222;
  background: #fff;
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px 60px;
  -webkit-font-smoothing: antialiased;
}

/* === Language Switcher === */
.lang-switcher {
  position: fixed;
  top: 12px;
  right: 20px;
  z-index: 100;
  display: flex;
  gap: 4px;
}

.lang-btn {
  border: 1px solid #bbb;
  background: #fff;
  padding: 3px 10px;
  font-size: 13px;
  font-family: sans-serif;
  cursor: pointer;
  color: #666;
  border-radius: 3px;
  transition: all 0.2s;
}

.lang-btn:hover {
  border-color: #666;
  color: #333;
}

.lang-btn.active {
  background: #222;
  color: #fff;
  border-color: #222;
}

/* === Header === */
.header {
  text-align: center;
  margin-bottom: 36px;
  padding-top: 20px;
}

.photo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 16px;
  /* placeholder styling when image not available */
  background: #e0e0e0;
}

h1 {
  font-size: 28px;
  font-weight: normal;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.affiliation {
  font-size: 16px;
  color: #444;
  margin-bottom: 4px;
}

.address {
  font-size: 14px;
  color: #666;
  margin-bottom: 8px;
}

.contact {
  font-size: 14px;
  color: #666;
}

.contact a {
  color: #1a6eb5;
}

/* === Sections === */
.section {
  margin-bottom: 30px;
}

.section h2 {
  font-size: 20px;
  font-weight: normal;
  border-bottom: 1px solid #ddd;
  padding-bottom: 6px;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.section h3 {
  font-size: 17px;
  font-weight: normal;
  font-style: italic;
  margin: 18px 0 10px 0;
  color: #444;
}

/* === Lists === */
ul {
  padding-left: 22px;
  margin-bottom: 10px;
}

li {
  margin-bottom: 6px;
}

.pub-list li {
  margin-bottom: 10px;
  padding-left: 4px;
}

/* === Links === */
a {
  color: #1a6eb5;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* === Placeholder text === */
.placeholder-text {
  color: #999;
  font-style: italic;
}

/* === Footer === */
.footer {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid #ddd;
  font-size: 13px;
  color: #999;
  text-align: center;
}

/* === Print === */
@media print {
  .lang-switcher {
    position: static;
    margin-bottom: 20px;
  }
  body {
    padding: 0;
    max-width: none;
  }
}

/* === Mobile === */
@media (max-width: 480px) {
  body {
    padding: 30px 16px 40px;
    font-size: 15px;
  }
  h1 {
    font-size: 24px;
  }
  .photo {
    width: 110px;
    height: 110px;
  }
  .lang-switcher {
    top: 8px;
    right: 12px;
  }
}