:root { --accent: #2563eb; --text: #1f2937; --muted: #6b7280; --bg: #f9fafb; }
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 1.5rem; }
header { display: flex; justify-content: space-between; align-items: center; }
header a.brand { font-weight: 700; font-size: 1.2rem; color: var(--text); text-decoration: none; }
nav a { margin-left: 1rem; color: var(--accent); text-decoration: none; }
nav a:hover, footer a:hover { text-decoration: underline; }
.hero { padding: 3rem 0 1.5rem; }
.hero h1 { font-size: 2.2rem; margin: 0 0 .5rem; }
.hero p { font-size: 1.15rem; color: var(--muted); }
ul.features { padding-left: 1.2rem; }
footer { border-top: 1px solid #e5e7eb; color: var(--muted); font-size: .9rem; }
footer a { color: var(--accent); text-decoration: none; margin-right: 1rem; }