:root{--ink:#0f172a;--slate:#1e293b;--muted:#64748b;--line:#e2e8f0;--bg:#f5f7fa;--card:#fff;--red:#dc2626;--red-dark:#b91c1c;--green:#138a5b;--amber:#b45309;--blue:#2563eb}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:'DM Sans',sans-serif;font-size:15px}button,input,select,textarea{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #fca5a5;outline-offset:2px}.app-shell{display:flex;min-height:100vh}.sidebar{width:252px;background:var(--slate);color:#cbd5e1;display:flex;flex-direction:column;padding:26px 16px;position:fixed;inset:0 auto 0 0}.sidebar-brand{display:flex;align-items:center;gap:10px;color:#fff;padding:0 12px 38px}.sidebar-brand strong{display:block;font-family:'Space Mono';font-size:15px;letter-spacing:2px}.sidebar-brand small{display:block;font-family:'Space 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