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

body {
  font-family: Georgia, serif;
  font-size: 16px;
  line-height: 1.6;
  color: #1a1a1a;
  background: #fafafa;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* nav */
header { border-bottom: 1px solid #e0e0e0; padding: 0 2rem; }
nav { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { font-weight: bold; letter-spacing: 0.05em; text-transform: uppercase; font-size: 14px; }
nav ul { list-style: none; display: flex; gap: 1.5rem; }
nav a { text-decoration: none; color: inherit; font-size: 14px; }
nav a:hover { text-decoration: underline; }

/* main */
main { flex: 1; padding: 4rem 2rem; max-width: 800px; margin: 0 auto; width: 100%; }

/* hero */
.hero h1 { font-size: 2.5rem; margin-bottom: 1rem; }
.hero p  { color: #555; margin-bottom: 2rem; }
.btn {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  background: #1a1a1a;
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  border-radius: 4px;
}
.btn:hover { background: #333; }

/* footer */
footer { border-top: 1px solid #e0e0e0; padding: 1.5rem 2rem; text-align: center; }
footer p { font-size: 13px; color: #999; }