:root{--bg: #f4f5f7;--surface: #ffffff;--border: #d8dce2;--border-strong: #b9c0ca;--text: #1f2733;--muted: #687288;--primary: #2563eb;--primary-dark: #1d4ed8;--ok: #15803d;--ok-bg: #e6f4ea;--danger: #b91c1c;--danger-bg: #fbe9e9;--neutral-bg: #eef1f5;--shadow: 0 1px 3px rgba(20, 30, 50, .12);--radius: 6px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.45}.mono{font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:12.5px}.boot{display:flex;align-items:center;justify-content:center;height:100vh}.spinner{width:28px;height:28px;margin:24px auto;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes 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