*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f5f5f5;color:#333}header{background:#1a1a2e;color:#fff;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center}header h1{font-size:1.5rem;font-weight:600}.header-auth button{background:#4f46e5;color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer;font-size:.9rem}.header-auth button:hover{background:#4338ca}main{max-width:1400px;margin:0 auto;padding:2rem}section{background:#fff;border-radius:8px;padding:1.5rem;margin-bottom:1.5rem;box-shadow:0 1px 3px #0000001a}h2{font-size:1.1rem;margin-bottom:1rem;color:#1a1a2e}.api-key-row{display:flex;gap:1rem;align-items:center}button{background:#4f46e5;color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer;font-size:.9rem}button:hover{background:#4338ca}#key-display{font-family:monospace;background:#f0f0f0;padding:.5rem 1rem;border-radius:4px;font-size:.9rem}pre{background:#1e1e1e;color:#d4d4d4;padding:1rem;border-radius:6px;overflow-x:auto;font-size:.85rem;line-height:1.5}.keyword{color:#569cd6}.string{color:#ce9178}.comment{color:#6a9955}.function{color:#dcdcaa}.number{color:#b5cea8}.workbooks{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.workbook-panel h3{font-size:.95rem;margin-bottom:.75rem;color:#555}.workbook-panel iframe{width:100%;height:350px;border:1px solid #ddd;border-radius:4px}@media(max-width:900px){.workbooks{grid-template-columns:1fr}}