:root{--primary-color: #1890ff;--success-color: #52c41a;--warning-color: #faad14;--error-color: #f5222d;--text-color: #333;--bg-color: #f0f2f5}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-color)}#root,.ant-layout{min-height:100vh}.stat-card{padding:20px;border-radius:8px;background:#fff;box-shadow:0 2px 8px #00000014;transition:all .3s}.stat-card:hover{box-shadow:0 4px 12px #0000001f;transform:translateY(-2px)}.stat-value{font-size:32px;font-weight:700;color:var(--primary-color)}.stat-value.up{color:var(--success-color)}.stat-value.down{color:var(--error-color)}