:root {
  --bg: #fafafa;
  --panel: #ffffff;
  --text: #1f2328;
  --muted: #57606a;
  --line: #d0d7de;
  --accent: #0969da;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Helvetica Neue", "Arial", sans-serif;
  line-height: 1.65;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 3rem 1.25rem 4rem;
}

.hero {
  display: flex;
  gap: 1.2rem;
  align-items: center;
  margin-bottom: 2.2rem;
}

.avatar {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background-color: #f2f4f7;
  background-image: url("assets/avatar.jpg");
  background-size: cover;
  background-position: center;
  color: #8c959f;
  display: grid;
  place-items: center;
  font-weight: 600;
  letter-spacing: 0.08em;
}

h1 {
  margin: 0;
  font-size: 2rem;
  line-height: 1.2;
  font-weight: 600;
}

.subtitle {
  margin: 0.25rem 0 0.55rem;
  color: var(--muted);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.links a {
  color: var(--accent);
  text-decoration: none;
}

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

section {
  margin-top: 1.7rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 0.7rem;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.pub-group-title {
  margin: 1rem 0 0.5rem;
  color: var(--muted);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.load-error {
  color: var(--muted);
}

ul,
ol {
  margin: 0.45rem 0 0;
  padding-left: 1.15rem;
}

li + li {
  margin-top: 0.55rem;
}

.education-list {
  list-style: none;
  padding-left: 0;
}

.edu-degree {
  display: block;
  font-weight: 600;
}

.edu-meta {
  display: block;
  color: var(--muted);
}

.pub-list li {
  margin-bottom: 0.75rem;
}

@media (max-width: 640px) {
  .container {
    padding: 2.1rem 1rem 3rem;
    padding-top: 2.1rem;
  }

  .hero {
    align-items: flex-start;
    gap: 0.9rem;
  }

  .avatar {
    width: 78px;
    height: 78px;
  }

  h1 {
    font-size: 1.7rem;
  }

  .subtitle {
    margin-bottom: 0.5rem;
  }

  .links {
    gap: 0.6rem;
  }

  .pub-group-title {
    margin: 0.9rem 0 0.35rem;
    font-size: 0.95rem;
  }

  .pub-list {
    margin-top: 0.35rem;
    padding-left: 1rem;
  }

  .pub-list li {
    margin-bottom: 0.6rem;
    line-height: 1.55;
    overflow-wrap: anywhere;
  }
}