:root {
  --text: #1f2937;
  --muted: #6b7280;
  --light: #9ca3af;
  --border: #e5e7eb;
  --background: #ffffff;
  --link: #111827;
  --tag-bg: #f3f4f6;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

.page {
  width: min(100% - 40px, 760px);
  margin: 0 auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  padding: 34px 0 30px;
  border-bottom: 1px solid var(--border);
}

.brand {
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  white-space: nowrap;
}

nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

nav a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

nav a:hover {
  color: var(--text);
}

main {
  padding: 55px 0 70px;
}

section {
  margin-bottom: 58px;
}

.intro {
  margin-bottom: 65px;
}

.profile-photo {
  width: 112px;
  height: 112px;
  object-fit: cover;
  border-radius: 50%;
  margin-bottom: 20px;
}

h1,
h2,
h3 {
  color: var(--text);
  line-height: 1.3;
}

h1 {
  margin: 0 0 8px;
  font-size: 34px;
  font-weight: 700;
}

h2 {
  margin: 0 0 22px;
  font-size: 23px;
  font-weight: 650;
}

h3 {
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 650;
}

p {
  margin: 0 0 16px;
}

.role {
  color: var(--muted);
  margin-bottom: 22px;
}

.meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 12px;
}

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

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags span {
  background: var(--tag-bg);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  color: #4b5563;
}

.news-item {
  display: grid;
  grid-template-columns: 95px 1fr;
  gap: 20px;
  margin-bottom: 18px;
}

.news-item .date {
  color: var(--muted);
  font-size: 14px;
}

.news-item p {
  margin: 0;
}

.entry,
.publication {
  margin-bottom: 34px;
}

footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding: 25px 0 40px;
  border-top: 1px solid var(--border);
}

footer a {
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}

footer a:hover {
  color: var(--text);
}

@media (max-width: 700px) {
  .page {
    width: min(100% - 28px, 760px);
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  nav {
    justify-content: flex-start;
    gap: 12px 16px;
  }

  main {
    padding-top: 42px;
  }

  h1 {
    font-size: 30px;
  }

  .news-item {
    grid-template-columns: 1fr;
    gap: 3px;
  }
}