:root{--shell-bg:#f6f7f9;--panel-bg:#ffffff;--line:#e7e9ee;--text-soft:#667085;--brand:#d94141;--brand-dark:#a82935;--teal:#0f9b8e;--ink:#1d2733}*{box-sizing:border-box}body{margin:0;background:var(--shell-bg);color:var(--ink)}.page{flex-direction:column}.page,.page-header{display:flex;gap:16px}.page-header{align-items:center;justify-content:space-between}.page-title{margin:0;font-size:22px;font-weight:700}.page-subtitle{margin:4px 0 0;color:var(--text-soft)}.panel{background:var(--panel-bg);border:1px solid var(--line);border-radius:8px;padding:16px}.metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:12px;gap:12px}.metric-card{background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:8px;padding:14px}.metric-card strong{display:block;font-size:24px}.metric-card span{color:var(--text-soft)}.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.status-pill{display:inline-flex;align-items:center;min-height:22px;padding:1px 8px;border:1px solid #d9dce3;border-radius:4px;background:#f7f8fa;color:#3f4652;font-size:12px;line-height:20px}.json-editor{border:1px solid var(--line);border-radius:8px;overflow:hidden}.trace-step{display:grid;grid-template-columns:120px 1fr;grid-gap:12px;gap:12px}.pre{margin:0;max-height:360px;overflow:auto;padding:12px;border-radius:8px;background:#111827;color:#d1fae5;font-size:12px}