:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #2563eb;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 24px;
}

.profile {
  max-width: 680px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
}

.profile-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.avatar {
  width: 192px;
  height: 192px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
}

h1 {
  font-size: 1.8rem;
}

.tagline {
  color: var(--muted);
}

section {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

h2 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

ul {
  padding-left: 20px;
}

li + li {
  margin-top: 4px;
}

.profile-footer {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}

@media (max-width: 600px) {
  .profile {
    padding: 18px;
  }

  .profile-header {
    flex-direction: column;
    align-items: flex-start;
  }
}