:root{--bg: #f3f4f6;--surface: #ffffff;--ink: #1f2430;--muted: #6b7280;--line: #e5e7eb;--accent: #2f5d8a;--accent-dark: #244a70;--sidebar: #1b2230;--hot: #dc2626;--warm: #d97706;--cold: #2563eb;--ok: #16a34a;--shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .06);font-family:Segoe UI,Roboto,-apple-system,BlinkMacSystemFont,sans-serif}*{box-sizing:border-box;margin:0}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.app-shell{display:flex;min-height:100vh}.sidebar{width:244px;background:var(--sidebar);color:#cdd3df;display:flex;flex-direction:column;padding:22px 16px;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:12px;padding:0 8px 20px}.brand-mark{width:38px;height:38px;border-radius:9px;background:var(--accent);color:#fff;font-weight:700;display:grid;place-items:center;font-size:14px}.brand strong{display:block;color:#fff;font-size:15px}.brand 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