:root{--bg:#ffffff;--text:#1a1a1a;--text-secondary:#6b7280;--border:#e5e7eb;--accent:#111827;--danger:#b91c1c}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text);background:var(--bg)}a{color:inherit}.chrome-header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border)}.chrome-header nav a{margin-right:16px;text-decoration:none;font-size:14px}.container{max-width:960px;margin:0 auto;padding:24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:6px;background:var(--accent);color:#fff;font-size:14px;font-weight:600;padding:10px 16px;cursor:pointer}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:#fff;color:var(--text);border:1px solid var(--border)}input,select{font-size:14px;padding:8px 10px;border:1px solid var(--border);border-radius:6px;width:100%}.error-banner{background:#fef2f2;color:var(--danger);border:1px solid #fecaca;border-radius:6px;padding:10px 14px;font-size:14px;margin-bottom:16px}.card{border:1px solid var(--border);border-radius:8px;padding:16px}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px}