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

:root {
  --color-bg: #fff;
  --color-text: #222;
  --color-accent: #0070f3;
  --max-width: 720px;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
}

header {
  padding: 2rem 1.5rem;
  border-bottom: 1px solid #eee;
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

header h1 {
  font-size: 1.4rem;
}

nav {
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
}

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

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

.logo-wrap {
  display: flex;
  justify-content: flex-start;
}

.logo-circle {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}

section h2 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

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

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

footer {
  text-align: center;
  padding: 2rem;
  color: #888;
  font-size: 0.85rem;
  border-top: 1px solid #eee;
}