body { font-family: Arial, sans-serif; background-color: #f0f2f5; color: #333; margin: 0; padding: 0; }
.header { background-color: #2c3e50; color: white; padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; }
.header nav a { color: #ecf0f1; text-decoration: none; margin-left: 1.5rem; font-size: 0.9rem; }
.header nav a:hover { text-decoration: underline; }
.container { max-width: 800px; margin: 4rem auto; background: white; padding: 2rem; border-radius: 4px; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
h1 { font-size: 1.5rem; color: #2c3e50; border-bottom: 1px solid #eee; padding-bottom: 0.5rem; }
.status-online { color: #27ae60; font-weight: bold; }
.box { background: #f8f9fa; border-left: 4px solid #3498db; padding: 1rem; margin: 1.5rem 0; font-size: 0.9rem; color: #555; }
footer { text-align: center; margin-top: 3rem; font-size: 0.8rem; color: #999; }