body {
  font-family: Georgia, "Times New Roman", serif;
  background-color: #ffffff;
  color: #222;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 800px;
  margin: 100px auto 60px auto; /* push content down */
  padding: 0 20px;
}

header {
  margin-bottom: 40px;
}

h1 {
  font-size: 2.5em;
  margin-bottom: 5px;
}

.subtitle {
  color: #666;
  margin-bottom: 20px;
}

nav {
  margin-top: 10px;
}

nav a {
  margin-right: 15px;
  text-decoration: none;
  color: #0056b3;
  font-weight: 500;
}

nav a:hover {
  text-decoration: underline;
}

h2 {
  margin-top: 40px;
  border-bottom: 1px solid #ddd;
  padding-bottom: 5px;
}

p {
  line-height: 1.6;
}

ul {
  padding-left: 20px;
}

li {
  margin-bottom: 10px;
}

a {
  color: #0056b3;
}

a:hover {
  text-decoration: underline;
}

footer {
  margin-top: 60px;
  font-size: 0.9em;
  color: #888;
}

/* Top navbar */
.topnav {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: #ffffff;
  border-bottom: 1px solid #ddd;
  z-index: 1000;
}

.nav-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-name {
  font-weight: bold;
  font-size: 1.1em;
}

.nav-links a {
  margin-left: 15px;
  text-decoration: none;
  color: #0056b3;
}

.nav-links a:hover {
  text-decoration: underline;
}

a {
  text-decoration: none;
  color: #0056b3;
}

a:hover {
  text-decoration: underline;
}

.talk-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
}

.talk-date {
  text-align: right;
  white-space: nowrap;
  color: #555;
  font-size: 0.95em;
  margin-left: 30px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;

  border-bottom: 1px solid #ddd;
  padding-bottom: 5px;
  margin-top: 40px;
}

.section-header h2 {
  margin: 0;
  border: none;
  padding: 0;
}

.slides-button,
.section-link {
  text-decoration: none;
  color: #0056b3;
  font-size: 1em;
}

.slides-button:hover,
.section-link:hover {
  text-decoration: underline;
}