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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #111;
  background: #fff;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px;
}

header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 56px;
}

.logo {
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: -0.5px;
}

nav { display: flex; gap: 20px; }
nav a { color: #111; font-size: 0.9rem; text-decoration: none; }
nav a:hover { text-decoration: underline; }

.intro {
  margin-bottom: 48px;
}

.intro p {
  font-size: 1.1rem;
  color: #333;
}

section { margin-bottom: 48px; }

h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #888;
  margin-bottom: 12px;
}

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

ul li {
  padding: 6px 0;
  border-bottom: 1px solid #f0f0f0;
  color: #333;
}

ul li:last-child { border-bottom: none; }

a { color: #111; }
a:hover { text-decoration: underline; }

h1 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.meta {
  font-size: 0.85rem;
  color: #888;
}

footer {
  margin-top: 80px;
  font-size: 0.8rem;
  color: #aaa;
}