:root{--primary-gradient: linear-gradient(135deg, #6d4bbf 0%, #22d3ee 100%);--primary-color: #6d4bbf;--secondary-color: #22d3ee;--bg-dark: #0f0f1a;--bg-card: #1a1a2e;--text-primary: #ffffff;--text-secondary: #a0a0b0;--border-color: rgba(109, 75, 191, .3);--success-color: #22c55e;--error-color: #ef4444;--warning-color: #f59e0b;--container-max-width: 1200px;--card-padding: 2rem;--border-radius: 16px;--glow-primary: 0 0 30px rgba(109, 75, 191, .3);--card-shadow: 0 8px 32px rgba(0, 0, 0, .3)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-dark);color:var(--text-primary);min-height:100vh;line-height:1.6}.app-container{min-height:100vh;background:radial-gradient(ellipse at top left,rgba(109,75,191,.15) 0%,transparent 50%),radial-gradient(ellipse at bottom right,rgba(34,211,238,.1) 0%,transparent 50%),var(--bg-dark)}.checkout-header{padding:1.5rem 2rem;display:flex;justify-content:center;border-bottom:1px solid var(--border-color)}.logo{height:48px}.checkout-container{max-width:var(--container-max-width);margin:0 auto;padding:3rem 2rem}.plan-selection{text-align:center;margin-bottom:3rem}.plan-selection h1{font-size:2.5rem;margin-bottom:.5rem;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.plan-selection p{color:var(--text-secondary);font-size:1.1rem}.plans-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:2rem;margin-top:2rem}.plan-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:var(--card-padding);position:relative;transition:all .3s ease;cursor:pointer}.plan-card:hover{transform:translateY(-8px);border-color:var(--primary-color);box-shadow:var(--glow-primary)}.plan-card.selected{border-color:var(--secondary-color);box-shadow:0 0 40px #22d3ee4d}.plan-card.featured{border-color:var(--primary-color)}.plan-badge{position:absolute;top:-12px;left:50%;transform:translate(-50%);background:var(--primary-gradient);color:#fff;padding:.5rem 1.5rem;border-radius:20px;font-size:.85rem;font-weight:600}.plan-name{font-size:1.5rem;font-weight:700;margin-bottom:.5rem;margin-top:.5rem}.plan-price{display:flex;align-items:baseline;justify-content:center;gap:.3rem;margin:1rem 0}.price-currency{font-size:1.2rem;color:var(--text-secondary)}.price-value{font-size:3rem;font-weight:800;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.price-period{font-size:1rem;color:var(--text-secondary)}.plan-features{list-style:none;margin:1.5rem 0;text-align:left}.plan-features li{padding:.5rem 0;display:flex;align-items:center;gap:.75rem;color:var(--text-secondary)}.plan-features li:before{content:"✓";color:var(--success-color);font-weight:700}.select-plan-btn{width:100%;padding:1rem;border:none;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;background:var(--primary-gradient);color:#fff}.select-plan-btn:hover{transform:scale(1.02);box-shadow:var(--glow-primary)}.checkout-form-container{max-width:600px;margin:0 auto}.checkout-progress{display:flex;justify-content:center;gap:2rem;margin-bottom:2rem}.progress-step{display:flex;flex-direction:column;align-items:center;gap:.5rem}.step-number{width:40px;height:40px;border-radius:50%;background:var(--bg-card);border:2px solid var(--border-color);display:flex;align-items:center;justify-content:center;font-weight:600}.progress-step.active .step-number{background:var(--primary-gradient);border-color:transparent}.progress-step.completed 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infinite}@media(max-width:768px){.checkout-container{padding:2rem 1rem}.plan-selection h1{font-size:1.8rem}.plans-grid,.form-row{grid-template-columns:1fr}.checkout-progress{gap:1rem}.step-label{display:none}}.checkout-footer{text-align:center;padding:2rem;border-top:1px solid var(--border-color);margin-top:3rem}.checkout-footer p{color:var(--text-secondary);font-size:.9rem}.checkout-footer a{color:var(--primary-color);text-decoration:none}.checkout-footer a:hover{text-decoration:underline}.secure-badge{display:flex;align-items:center;justify-content:center;gap:.5rem;color:var(--text-secondary);font-size:.85rem;margin-top:1rem}.secure-badge svg{color:var(--success-color)}*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #6d4bbf;--primary-dark: #5a3d9e;--success: #22c55e;--error: #ef4444;--bg-light: #f5f5f5;--bg-white: #ffffff;--text-primary: #1f2937;--text-secondary: #6b7280;--border: #e5e7eb;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-light);color:var(--text-primary);line-height:1.6}.app-container{min-height:100vh;display:flex;flex-direction:column}.loading-screen{justify-content:center;align-items:center;gap:1rem}.checkout-header{background:var(--bg-white);padding:.5rem 1rem;border-bottom:1px solid var(--border);display:flex;justify-content:center}.logo{height:100px;max-width:900px;width:auto;object-fit:contain}.checkout-main{flex:1;max-width:1100px;width:100%;margin:2rem auto;padding:0 1rem;display:grid;grid-template-columns:1fr 380px;gap:2rem;align-items:start}.checkout-form{background:var(--bg-white);border-radius:12px;padding:2rem;box-shadow:var(--shadow)}.plan-header{display:flex;gap:1rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border);margin-bottom:1.5rem}.plan-icon{width:60px;height:60px;display:flex;align-items:center;justify-content:center}.plan-icon 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.2s,transform .1s;display:flex;align-items:center;justify-content:center;gap:.5rem}.btn-purchase:hover:not(:disabled){background:#16a34a;transform:translateY(-1px)}.btn-purchase:disabled{opacity:.7;cursor:not-allowed}.secure-badge{text-align:center;padding:1rem;color:var(--text-secondary);font-size:.875rem}.checkout-summary{background:var(--bg-white);border-radius:12px;padding:1.5rem;box-shadow:var(--shadow);position:sticky;top:2rem}.checkout-summary h3{font-size:1rem;font-weight:600;margin-bottom:1rem;padding-bottom:.75rem;border-bottom:1px solid var(--border)}.summary-item{display:flex;justify-content:space-between;padding:.5rem 0;font-size:.875rem}.summary-total{display:flex;justify-content:space-between;padding:1rem 0;margin-top:.5rem;border-top:1px solid var(--border);font-weight:600;font-size:1rem}.summary-features{list-style:none;margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border)}.summary-features li{padding:.375rem 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