:root { --accent: #2563eb; --ink: #1f2937; --muted: #6b7280; --bg: #ffffff; --line: #e5e7eb; }
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.6; }
a { color: var(--accent); }
.site-header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.5rem; border-bottom: 1px solid var(--line); }
.brand img { max-height: 48px; display: block; }
.brand img[src=""] { display: none; }
.site-nav ul { display: flex; flex-wrap: wrap; gap: 1rem; list-style: none; margin: 0; padding: 0; }
.site-nav a { text-decoration: none; font-weight: 600; }
.site-main { max-width: 64rem; margin: 0 auto; padding: 2rem 1.5rem; }
.hero { padding: 3rem 0; }
.hero h1 { margin: 0 0 .5rem; font-size: 2.4rem; line-height: 1.15; }
.button { display: inline-block; padding: .6rem 1.2rem; border-radius: .4rem; background: var(--accent); color: #fff; text-decoration: none; font-weight: 600; }
.site-footer { padding: 1.5rem; border-top: 1px solid var(--line); color: var(--muted); text-align: center; font-size: .9rem; }
.site-footer ul { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; list-style: none; margin: 0 0 .5rem; padding: 0; }
@media (max-width: 40rem) { .hero h1 { font-size: 1.8rem; } }