body { max-width: 760px; margin: 0 auto; padding: 40px 20px; font: 16px/1.7 system-ui, -apple-system, "Segoe UI", sans-serif; color: #1f2328; }
header, footer { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
header { justify-content: space-between; margin-bottom: 40px; }
footer { margin-top: 60px; padding-top: 20px; border-top: 1px solid #e5e7eb; font-size: 14px; color: #6b7280; }
a { color: #4f46e5; }
.logo { font-weight: 700; font-size: 20px; color: inherit; text-decoration: none; }
.card { border: 1px solid #e5e7eb; border-radius: 10px; padding: 16px 20px; margin: 16px 0; }
h1 { line-height: 1.3; }