:root {
  --purple: #4B2E83;
  --bg: #e5e5e5;
  --card-bg: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 40px 20px;
  background-color: var(--bg);
  font-family: Georgia, "Times New Roman", Times, serif;
  color: #222;
  line-height: 1.5;
  overflow-wrap: break-word;
}

.page {
  max-width: 760px;
  margin: 0 auto;
  background-color: var(--card-bg);
  box-shadow: 0 0 0 4px var(--purple);
  padding: 30px 36px;
}

.header {
  display: flex;
  gap: 24px;
  border-bottom: 1px solid #ccc;
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.portrait {
  width: 180px;
  height: 200px;
  object-fit: cover;
  border: 2px solid #000;
}

.header-text h1 { margin: 0 0 4px 0; font-size: 1.8em; color: #222; }

.speak-button {
  border: none;
  background: none;
  cursor: pointer;
  font-size: .75em;
  vertical-align: middle;
}

.title { margin: 0 0 6px 0; font-weight: bold; color: var(--purple); }
.contact { margin: 0 0 14px 0; }
.contact a { color: #222; }

.site-nav a {
  margin-right: 18px;
  color: var(--purple);
  text-decoration: none;
  font-weight: bold;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.site-nav a:hover,
.site-nav a.active { border-bottom-color: var(--purple); }

h1, h2 { color: #222; }
h2 { border-bottom: 1px solid #ccc; padding-bottom: 4px; margin-top: 28px; }

a { color: var(--purple); }

.pub { margin-bottom: 18px; }
.pub-title { font-weight: bold; margin: 0 0 2px 0; }
.pub-authors, .pub-venue, .pub-links { margin: 2px 0; }

.note { font-style: italic; color: #555; }

ul.teaching-list { padding-left: 20px; }
ul.teaching-list ul { margin-top: 4px; }

@media (max-width: 600px) {
  body { padding: 20px 12px; }

  .page { padding: 20px 18px; }

  .header {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 12px;
  }

  .portrait { width: 140px; height: 156px; }

  .site-nav a { margin: 0 9px; display: inline-block; }
}