:root{font-family:Inter,Segoe UI,Arial,sans-serif;color:#1f2937;background:#f4f5f8;--ink:#172033;--muted:#697386;--purple:#6556d9;--line:#e5e7eb;--panel:#fff;--shadow:0 8px 28px rgba(21,31,52,.07)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:#f4f5f8}a{color:inherit}.app-shell{display:grid;grid-template-columns:248px 1fr;min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;background:#151b2b;color:#d8dceb;padding:24px 18px;display:flex;flex-direction:column}.brand-lockup{display:flex;align-items:center;gap:11px;text-decoration:none;padding:0 7px 26px}.brand-lockup strong,.brand-lockup small{display:block}.brand-lockup small{color:#9ca6ba;margin-top:2px}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,#7c6ce7,#42b7e8);font-weight:800;color:white}.sidebar nav{display:grid;gap:5px}.sidebar nav a{display:flex;align-items:center;gap:12px;padding:10px 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