:root{color-scheme:light;font-family:Trebuchet MS,Segoe UI,sans-serif;background:#f6f2e8;color:#2b2b2b}*{box-sizing:border-box}body{margin:0}.app{min-height:100vh;background:radial-gradient(circle at top,#fff5de,#f2e6d1 45%,#e7dcc9)}.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;background:#1f1c14;color:#f8f1e1}.brand{font-size:20px;letter-spacing:1px;text-transform:uppercase}.status{font-size:14px;opacity:.9}.layout{display:grid;grid-template-columns:220px 1fr 320px;gap:16px;padding:24px}.panel{background:#fff9ef;border:1px solid #e2d5bf;border-radius:12px;padding:16px;min-height:240px;box-shadow:0 8px 20px #281e0f14}.panel h2{margin-top:0}@media (max-width: 960px){.layout{grid-template-columns:1fr}}