:root { color-scheme: light dark; font-family: system-ui, sans-serif; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: #111827; color: #e5e7eb; }
main { width: min(520px, 80vw); padding: 48px; border: 1px solid #374151; border-radius: 18px; background: #1f2937; }
.indicator { width: 12px; height: 12px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 16px #22c55e; }
h1 { margin: 20px 0 8px; font-size: 28px; }
p { color: #9ca3af; }
small { display: block; margin-top: 36px; color: #6b7280; }