:root {
  --top-bg: #f3f5f7;
  --page-bg: #ffffff;
  --text: #212529;
  --muted: #6c757d;
  --border: #d9e0e6;
  --link: #0d6efd;
  --max: 1120px;
  --content-max: 1020px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--page-bg);
  color: var(--text);
  line-height: 1.65;
}

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

.topbar {
  background: var(--top-bg);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.95rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-weight: 600;
  font-size: 1.04rem;
  color: var(--text);
  white-space: nowrap;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.96rem;
}

nav a {
  color: #495057;
  padding: 0.1rem 0;
}

nav a.active {
  color: var(--text);
  font-weight: 600;
}

.page {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
  text-align: justify;
}

h2 {
  margin: 1.5rem 0 0.7rem;
  font-size: 1.28rem;
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
  text-align: left;
}

h2:first-of-type {
  margin-top: 0.25rem;
  border-top: none;
  padding-top: 0;
}

h3 {
  margin: 1.8rem 0 0.55rem;
  font-size: 1.08rem;
  text-align: left;
}

p { margin: 0 0 1rem; }

ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

li {
  margin: 0 0 0.22rem;
  line-height: 1.5;
}

.publications li {
  margin-bottom: 0.38rem;
}

.contact-block p {
  margin-bottom: 0.18rem;
  line-height: 1.4;
}

.cv-block p {
  margin-bottom: 0.32rem;
  line-height: 1.5;
}

.project-note,
.page-note {
  color: var(--muted);
  font-size: 0.95rem;
}

.page-projects .project-note {
  line-height: 1.5;
}

.project-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 0 0 1rem;
}

.project-gallery-item {
  margin: 0;
}

.project-gallery-item img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
}

.project-gallery-item .project-note {
  margin-top: 0.45rem;
}

.talk-list {
  list-style: none;
  padding-left: 0;
  margin: 0 0 0.8rem;
}

.talk-group {
  padding-top: 0.15rem;
  margin-top: 0.6rem;
}

.talk-group + .talk-group {
  border-top: 1px solid var(--border);
  padding-top: 0.5rem;
  margin-top: 0.85rem;
}

.talk-list li {
  margin-bottom: 0;
  padding: 0.22rem 0 0.22rem 0;
  line-height: 1.5;
  display: grid;
  grid-template-columns: 12.5rem 1fr;
  column-gap: 0;
  align-items: start;
}

.talk-date {
  display: block;
  width: auto;
  font-weight: 400;
  white-space: nowrap;
  padding-right: 0.5rem;
  text-align: left;
}

.talk-text {
  text-align: left;
}

.talk-text em {
  font-style: italic;
}

@media (max-width: 760px) {
  .topbar-inner {
    align-items: flex-start;
  }

  nav {
    gap: 0.75rem 1rem;
  }

  .talk-list li {
    display: block;
    padding-left: 0;
  }

  .talk-date {
    display: inline;
    white-space: normal;
    padding-right: 0.35rem;
  }

  .project-gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .topbar-inner,
  .page {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}