:root { --brand: #2563eb; --ink: #111827; --muted: #6b7280; --border: #e5e7eb; }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; color: var(--ink); background: #fff; line-height: 1.6; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { padding-top: 24px; padding-bottom: 8px; }
.logo { font-size: 22px; font-weight: 800; color: var(--ink); text-decoration: none; }
.logo span { color: var(--brand); }
h1 { font-size: 30px; margin: 24px 0 4px; }
h2 { font-size: 19px; margin: 28px 0 8px; }
.muted { color: var(--muted); margin-top: 0; }
a { color: var(--brand); }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
.hero { padding: 40px 0 8px; }
.hero p { font-size: 18px; color: #374151; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; margin: 24px 0; }
.feature { border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.feature h3 { margin: 0 0 6px; font-size: 16px; }
.feature p { margin: 0; color: #4b5563; font-size: 14.5px; }
footer { border-top: 1px solid var(--border); margin-top: 48px; padding-top: 16px; padding-bottom: 32px; color: var(--muted); font-size: 14px; }