:root{color-scheme:light}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:Segoe UI,Inter,system-ui,-apple-system,sans-serif;color:#0b172a}#root{min-height:100vh}a{color:inherit;text-decoration:none}.app-shell{display:grid;min-height:100vh;grid-template-rows:auto 1fr}.nav-link{padding:.6rem .9rem;border-radius:999px;transition:background-color .12s ease,color .12s ease;font-weight:600}.nav-link.active{background:#0f766e1f;color:#0f766e}.card-surface{background:#ffffffe6;border:1px solid #e2e8f0;border-radius:14px;box-shadow:0 12px 40px #0f172a0f}