*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%}.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}.login-card{width:400px;padding:40px;background:#fff;border-radius:8px;box-shadow:0 8px 32px #00000026}.login-card h1{text-align:center;margin-bottom:32px;font-size:24px;color:#1a1a1a}.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}.version-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding:20px;background:#f6ffed;border:1px solid #b7eb8f;border-radius:8px}.version-header .current-version{font-size:20px;font-weight:600;color:#52c41a}.monitor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}@media(max-width:1024px){.stat-cards,.monitor-grid{grid-template-columns:repeat(2,1fr)}}