:root {
  --bg: #ffffff;
  --text: #1f1f1f;
  --muted: #666666;
  --link: #0b3d91;
  --border: #d9d9d9;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, "Times New Roman", Times, serif;
  line-height: 1.55;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

.layout {
  max-width: 1100px;
  margin: 0 auto;
}

.sidebar {
  position: fixed;
  top: 0;
  left: max(0px, calc((100vw - 1100px) / 2));
  width: 240px;
  height: 100vh;
  padding: 36px 24px;
  border-right: 1px solid var(--border);
  background: var(--bg);
}

.sidebar-name {
  margin: 0 0 16px 0;
  font-size: 1.15rem;
  color: var(--link);
}

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

.sidebar li {
  margin: 0 0 10px 0;
}

.content {
  margin-left: 260px;
  padding: 36px 28px 48px;
}

.top-block h1 {
  margin: 0 0 10px 0;
  font-size: 2.1rem;
  font-weight: 700;
}

.top-block hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 12px 0 20px;
}

.intro-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  align-items: start;
}

.profile-photo {
  width: 100%;
  max-width: 180px;
  height: auto;
  border: 1px solid var(--border);
}

.profile-info p {
  margin: 0 0 10px 0;
}

section {
  margin-top: 34px;
  scroll-margin-top: 20px;
}

h2 {
  margin: 0 0 10px 0;
  color: var(--link);
  font-size: 1.25rem;
}

p,
ul,
ol {
  margin-top: 0;
}

ul,
ol {
  padding-left: 22px;
}

li + li {
  margin-top: 6px;
}

strong {
  font-weight: 700;
}

.profile-info {
  color: var(--text);
}

.profile-info .muted {
  color: var(--muted);
}

@media (max-width: 900px) {
  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding: 16px 18px;
  }

  .sidebar ul {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
  }

  .sidebar li {
    margin: 0;
  }

  .content {
    margin-left: 0;
    padding: 22px 18px 34px;
  }

  .top-block h1 {
    font-size: 1.8rem;
  }
}

@media (max-width: 700px) {
  .intro-row {
    grid-template-columns: 1fr;
  }

  .profile-photo {
    max-width: 160px;
  }
}