:root { color-scheme: dark; font-family: Inter, "Microsoft YaHei", sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: #0f172a; color: #e2e8f0; }
.card { width: min(92vw, 560px); padding: 48px; border: 1px solid #334155; border-radius: 24px; background: #1e293b; box-shadow: 0 24px 80px #02061799; }
.badge { color: #38bdf8; font-size: 12px; font-weight: 700; letter-spacing: .16em; }
h1 { margin: 14px 0 10px; font-size: clamp(28px, 6vw, 42px); }
.intro { color: #94a3b8; line-height: 1.7; }
.status { display: flex; align-items: center; gap: 10px; margin: 28px 0; padding: 14px 16px; border-radius: 12px; background: #0f172a; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: #f59e0b; }
.dot.ok { background: #22c55e; }.dot.error { background: #ef4444; }
button { border: 0; border-radius: 10px; padding: 11px 18px; color: #082f49; background: #38bdf8; font-weight: 700; cursor: pointer; }
button:hover { background: #7dd3fc; }