:root{--navy: #0f172a;--teal: #06b6d4;--teal-dark: #0891b2;--amber: #f59e0b;--white: #ffffff;--gray-100: #f1f5f9;--gray-200: #e2e8f0;--gray-400: #94a3b8;--gray-600: #475569;--radius: 12px;--radius-lg: 20px;--font: Inter, -apple-system, BlinkMacSystemFont, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font);color:var(--navy);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--teal);text-decoration:none}a:hover{color:var(--teal-dark)}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:10px;font-size:1rem;font-weight:600;text-decoration:none;transition:all .2s;cursor:pointer;border:none}.btn-primary{background:var(--teal);color:var(--white)}.btn-primary:hover{background:var(--teal-dark);transform:translateY(-1px)}.btn-outline{background:transparent;border:2px solid var(--gray-200);color:var(--navy)}.btn-outline:hover{border-color:var(--teal);color:var(--teal)}.eyebrow{display:inline-block;font-size:.75rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--teal);background:#06b6d41a;padding:4px 12px;border-radius:100px;margin-bottom:16px}.container{max-width:1100px;margin:0 auto;padding:0 24px}.section{padding:80px 0}.page{min-height:100vh;display:flex;flex-direction:column}.nav{position:sticky;top:0;background:#ffffffeb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--gray-200);z-index:100}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:1100px;margin:0 auto;padding:0 24px}.nav-logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.2rem;color:var(--navy);text-decoration:none}.nav-links{display:flex;gap:24px;list-style:none;align-items:center}.nav-links a{font-size:.9rem;font-weight:500;color:var(--gray-600);transition:color .2s}.nav-links a:hover{color:var(--navy)}.builder-layout{display:grid;grid-template-columns:280px 1fr;min-height:calc(100vh - 64px)}.builder-sidebar{background:var(--gray-100);border-right:1px solid var(--gray-200);padding:24px}.builder-main{padding:32px;overflow:auto}.sheet-input{width:100%;padding:12px 16px;border:2px solid var(--gray-200);border-radius:var(--radius);font-size:1rem;font-family:var(--font)}.sheet-input:focus{outline:none;border-color:var(--teal)}.col-chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;background:#fff;border:1px solid var(--gray-200);border-radius:100px;font-size:.8rem;cursor:pointer}.col-chip.active{background:#06b6d41a;border-color:var(--teal);color:var(--teal)}.data-table{width:100%;border-collapse:collapse;font-size:.875rem}.data-table th{text-align:left;padding:10px 12px;background:var(--gray-100);font-weight:600;font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--gray-600);border-bottom:2px solid var(--teal)}.data-table td{padding:8px 12px;border-bottom:1px solid var(--gray-200);color:var(--gray-600)}.data-table tr:hover td{background:var(--gray-100)}.embed-url-box{display:flex;align-items:center;gap:12px;background:var(--gray-100);border:2px dashed var(--gray-400);border-radius:var(--radius);padding:16px;font-family:monospace;font-size:.85rem;color:var(--navy)}.copy-btn{margin-left:auto;background:var(--teal);color:#fff;border:none;padding:8px 16px;border-radius:8px;font-size:.8rem;font-weight:600;cursor:pointer;flex-shrink:0}.card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:28px}.card-title{font-size:1.1rem;font-weight:700;margin-bottom:16px}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--navy)}.auth-card{background:#fff;border-radius:var(--radius-lg);padding:48px;width:100%;max-width:420px;text-align:center}.auth-logo{font-size:1.5rem;font-weight:800;color:var(--navy);margin-bottom:8px}.auth-sub{color:var(--gray-600);font-size:.9rem;margin-bottom:32px}.form-group{margin-bottom:16px;text-align:left}.form-label{display:block;font-size:.8rem;font-weight:600;margin-bottom:6px;color:var(--gray-600)}.form-input{width:100%;padding:12px 14px;border:2px solid var(--gray-200);border-radius:10px;font-size:1rem;font-family:var(--font)}.form-input:focus{outline:none;border-color:var(--teal)}@media (max-width: 768px){.builder-layout{grid-template-columns:1fr}.builder-sidebar,.nav-links{display:none}}