:root{--kb-bg: #f6f7f9;--kb-panel: #ffffff;--kb-border: #dcdfe6;--kb-text: #1f2937;--kb-muted: #667085;--kb-primary: #2454a6;--kb-primary-soft: #e8f0fe;--kb-danger: #c2410c}*{box-sizing:border-box}body{margin:0;min-width:1200px;background:var(--kb-bg);color:var(--kb-text);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.kb-page{padding:20px 24px 32px}.kb-page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:16px}.kb-page-title{margin:0;font-size:22px;font-weight:650;line-height:1.35}.kb-page-subtitle{margin:6px 0 0;color:var(--kb-muted);font-size:13px;line-height:1.5}.kb-panel{border:1px solid var(--kb-border);border-radius:6px;background:var(--kb-panel)}.kb-panel-body{padding:16px}.kb-muted{color:var(--kb-muted)}.kb-metric-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:16px}.kb-metric{border:1px solid var(--kb-border);border-radius:6px;background:#fff;padding:14px 16px}.kb-metric-label{color:var(--kb-muted);font-size:12px}.kb-metric-value{margin-top:8px;font-size:24px;font-weight:700}.kb-empty{display:flex;min-height:220px;align-items:center;justify-content:center;color:var(--kb-muted)}