:root{--color-primary:#b52026;--color-primary-dark:#8f1a1f;--color-primary-light:#d4363d;--color-success:#10b981;--color-warning:#f59e0b;--color-danger:#ef4444;--color-info:#3b82f6;--bg-base:#f8fafc;--bg-elevated:#fff;--bg-sidebar:#23282d;--bg-sidebar-var:#32373c;--text-primary:#23282d;--text-secondary:#64748b;--text-muted:#94a3b8;--border-color:#e2e8f0;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a;--shadow-xl:0 20px 25px -5px #0000001a;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-base:.25s cubic-bezier(.4, 0, .2, 1);--transition-slow:.35s cubic-bezier(.4, 0, .2, 1);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Avant Garde,Century Gothic,-apple-system,BlinkMacSystemFont,Segoe 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a{color:var(--color-primary);transition:color var(--transition-fast);font-weight:500;text-decoration:none}.auth-footer a:hover{color:var(--color-primary-dark)}.auth-footer p{margin:6px 0}.auth-note{color:var(--text-muted);margin-top:16px;font-size:13px;line-height:1.5}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.form-group{margin-bottom:18px}.form-group label{color:var(--text-primary);letter-spacing:-.1px;margin-bottom:6px;font-size:14px;font-weight:600;display:block}.form-group input,.form-group textarea,.select{border:1.5px solid var(--border-color);width:100%;transition:all var(--transition-fast);background:#fff;border-radius:8px;padding:11px 14px;font-size:15px}.form-group input:hover,.form-group textarea:hover,.select:hover{border-color:#cbd5e1}.form-group input:focus,.form-group textarea:focus,.select:focus{border-color:var(--color-primary);background:#fff;outline:none;box-shadow:0 0 0 4px #b520261a}.form-group 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strong{color:var(--text-primary);margin-bottom:8px;font-size:16px;display:block}.plan-price{color:var(--text-primary);letter-spacing:-.5px;margin:10px 0;font-size:24px;font-weight:800}.plan-original{color:var(--text-muted);margin-top:4px;font-size:13px;text-decoration:line-through;display:block}.payment-summary{border:1px solid var(--border-color);background:#f8fafc;border-radius:8px;margin:16px 0;padding:16px 20px}.payment-summary p{margin:8px 0;font-size:15px}.payment-details{margin:20px 0}.payment-details code{background:var(--color-primary);color:#fff;border-radius:4px;padding:3px 8px;font-weight:600}@media (max-width:640px){.model-grid,.plan-grid{grid-template-columns:1fr}}.error-msg{border-left:4px solid var(--color-danger);color:#dc2626;box-shadow:var(--shadow-sm);background:#fef2f2;border-radius:8px;margin-bottom:20px;padding:14px 18px;font-size:14px;line-height:1.5}.loading{text-align:center;color:var(--text-secondary);padding:60px 24px;font-size:15px}code{background:#f1f5f9;border-radius:4px;padding:2px 6px;font-family:Monaco,Menlo,Consolas,monospace;font-size:13px}