:root { --primary: #0b57d0; --bg: #f8fafc; --text: #1e293b; --card: #ffffff; }
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
header { background: var(--card); border-bottom: 1px solid #e2e8f0; padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; }
header .logo { font-weight: 700; font-size: 1.2rem; color: var(--primary); text-decoration: none; }
nav a { margin-left: 1.5rem; text-decoration: none; color: #475569; font-weight: 500; }
nav a:hover { color: var(--primary); }
main { max-width: 960px; margin: 3rem auto; padding: 0 1.5rem; }
.hero { background: var(--card); border-radius: 12px; padding: 3rem 2rem; border: 1px solid #e2e8f0; margin-bottom: 2rem; }
.hero h1 { font-size: 2rem; margin-bottom: 1rem; color: #0f172a; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.card { background: var(--card); padding: 1.5rem; border-radius: 8px; border: 1px solid #e2e8f0; }
.card h3 { margin-bottom: 0.5rem; color: #0f172a; }
footer { text-align: center; padding: 2rem; font-size: 0.875rem; color: #64748b; margin-top: 3rem; }