/* Base layout */
body {
  margin: 0;
  font-family: "Times New Roman", serif;
  font-size: 18px;
  line-height: 1.6;
  background-color: #ffffff;
  color: #333;
}

/* Header styling */
.page-header {
  display: flex;
  align-items: center;
  background-color: #C60C30; /* Peking University red */
  color: white;
  padding: 20px;
}

.logo {
  height: 80px;
  margin-right: 20px;
}

.title-box h1 {
  margin: 0;
  font-size: 2.5em;
  font-weight: bold;
  line-height: 1.2;
}

.title-box h2,
.title-box h3 {
  margin: 2px 0;
  font-size: 1.1em;
  font-weight: normal;
  line-height: 1.2;
}

/* Navigation bar */
nav {
  background-color: #A00C26;
}

nav ul {
  display: flex;
  justify-content: center;
  margin: 0;
  padding: 10px 0;
  list-style: none;
  background-color: inherit;
}

nav li {
  margin: 0 20px;
}

nav a {
  text-decoration: none;
  color: white;
  font-weight: bold;
  padding: 6px 10px;
  border-radius: 5px;
}

nav a.active,
nav a:hover {
  background-color: #87091f;
}

/* Content area */
.content {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
}

/* Profile photo with text wrapping */
.profile-photo {
  float: left;
  width: 200px;
  max-width: 40%;
  margin: 0 20px 20px 0;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  height: auto;
}

/* Paragraphs text */
.content p {
  text-align: justify;
  margin-bottom: 1em;
}

/* Last updated text in subtle grey */
.last-updated {
  color: #777777;
  font-style: italic;
  margin-top: 1em;
}