:root{--primary:#4f46e5;--primary-hover:#4338ca;--primary-light:#eef2ff;--primary-dark:#3730a3;--success:#10b981;--success-light:#ecfdf5;--warning:#f59e0b;--warning-light:#fffbeb;--danger:#ef4444;--danger-light:#fef2f2;--gray-50:#f8fafc;--gray-100:#f1f5f9;--gray-200:#e2e8f0;--gray-300:#cbd5e1;--gray-400:#94a3b8;--gray-500:#64748b;--gray-600:#475569;--gray-700:#334155;--gray-800:#1e293b;--gray-900:#0f172a;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--shadow-xl:0 20px 25px -5px #0000001a, 0 8px 10px -6px #0000001a}*{box-sizing:border-box;-webkit-font-smoothing:antialiased;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif}body{background-color:var(--gray-50);color:var(--gray-800);flex-direction:column;min-height:100vh;display:flex}#root{flex-direction:column;min-height:100vh;display:flex}.container{width:100%;max-width:960px;margin:0 auto;padding:0 1.25rem}.navbar{border-bottom:1px solid var(--gray-200);z-index:100;background-color:#fff;position:sticky;top:0}.navbar-inner{justify-content:space-between;align-items:center;height:64px;display:flex}.logo-link{color:var(--gray-900);align-items:center;gap:.625rem;font-size:1.25rem;font-weight:700;text-decoration:none;display:flex}.logo-badge{background:linear-gradient(135deg, var(--primary), #818cf8);color:#fff;border-radius:var(--radius-sm);justify-content:center;align-items:center;width:36px;height:36px;display:flex}.nav-links{gap:.5rem;display:flex}.nav-btn{border-radius:var(--radius-sm);cursor:pointer;border:none;align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:.9375rem;font-weight:600;text-decoration:none;transition:all .15s;display:inline-flex}.nav-btn-ghost{color:var(--gray-600);background:0 0}.nav-btn-ghost:hover,.nav-btn-ghost.active{background:var(--gray-100);color:var(--primary)}.nav-btn-primary{background:var(--primary);color:#fff}.nav-btn-primary:hover{background:var(--primary-hover)}.main-content{flex-direction:column;flex:1;padding:2.5rem 0;display:flex}.card{border-radius:var(--radius-lg);border:1px solid var(--gray-200);box-shadow:var(--shadow-sm);background:#fff;margin-bottom:1.5rem;padding:2rem;transition:box-shadow .2s}.card:hover{box-shadow:var(--shadow-md)}.hero{text-align:center;max-width:680px;margin:0 auto;padding:2rem 0 3rem}.hero-tag{background-color:var(--primary-light);color:var(--primary);border-radius:9999px;align-items:center;gap:.375rem;margin-bottom:1.25rem;padding:.375rem .875rem;font-size:.8125rem;font-weight:600;display:inline-flex}.hero-title{color:var(--gray-900);letter-spacing:-.025em;margin-bottom:1rem;font-size:2.75rem;font-weight:800;line-height:1.15}.hero-gradient{background:linear-gradient(135deg, var(--primary), #ec4899);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.hero-subtitle{color:var(--gray-600);margin-bottom:2rem;font-size:1.1875rem;line-height:1.6}.hero-cta{flex-wrap:wrap;justify-content:center;gap:1rem;display:flex}.btn{border-radius:var(--radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;gap:.625rem;min-height:48px;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;text-decoration:none;transition:all .15s;display:inline-flex}.btn-primary{background-color:var(--primary);color:#fff;box-shadow:0 4px 12px #4f46e540}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover);transform:translateY(-1px)}.btn-secondary{color:var(--gray-700);border:1px solid var(--gray-300);background-color:#fff}.btn-secondary:hover:not(:disabled){background-color:var(--gray-50);border-color:var(--gray-400)}.btn-danger{background-color:var(--danger-light);color:var(--danger);border:1px solid #ef444433}.btn-danger:hover:not(:disabled){background-color:#fee2e2}.btn-lg{padding:.875rem 2rem;font-size:1.125rem}.btn-full{width:100%}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.steps-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;margin:3rem 0;display:grid}.step-card{border-radius:var(--radius-lg);border:1px solid var(--gray-200);text-align:left;background:#fff;padding:1.75rem}.step-num{background:var(--primary-light);width:36px;height:36px;color:var(--primary);border-radius:50%;justify-content:center;align-items:center;margin-bottom:1rem;font-weight:700;display:flex}.step-title{color:var(--gray-900);margin-bottom:.5rem;font-size:1.125rem;font-weight:700}.step-desc{color:var(--gray-600);font-size:.9375rem;line-height:1.5}.dropzone{border:2px dashed var(--gray-300);border-radius:var(--radius-lg);text-align:center;background-color:var(--gray-50);cursor:pointer;flex-direction:column;justify-content:center;align-items:center;padding:3rem 1.5rem;transition:all .2s;display:flex}.dropzone:hover,.dropzone.active{border-color:var(--primary);background-color:var(--primary-light)}.dropzone-icon{width:56px;height:56px;color:var(--primary);box-shadow:var(--shadow-sm);background:#fff;border-radius:50%;justify-content:center;align-items:center;margin-bottom:1.25rem;display:flex}.dropzone-title{color:var(--gray-800);margin-bottom:.375rem;font-size:1.125rem;font-weight:700}.dropzone-subtitle{color:var(--gray-500);font-size:.875rem}.file-preview{background-color:var(--gray-50);border-radius:var(--radius-md);border:1px solid var(--gray-200);justify-content:space-between;align-items:center;margin:1.25rem 0;padding:1rem;display:flex}.file-preview-info{align-items:center;gap:.75rem;display:flex;overflow:hidden}.file-name{color:var(--gray-800);white-space:nowrap;text-overflow:ellipsis;max-width:320px;font-size:.9375rem;font-weight:600;overflow:hidden}.file-size{color:var(--gray-500);font-size:.8125rem}.progress-container{margin:1.25rem 0}.progress-header{justify-content:space-between;margin-bottom:.375rem;font-size:.875rem;font-weight:600;display:flex}.progress-bar-bg{background-color:var(--gray-200);border-radius:9999px;width:100%;height:8px;overflow:hidden}.progress-bar-fill{background:linear-gradient(90deg, var(--primary), #818cf8);border-radius:9999px;height:100%;transition:width .2s}.code-box{border-radius:var(--radius-lg);text-align:center;color:#fff;box-shadow:var(--shadow-lg);background:linear-gradient(135deg,#1e1e2f,#2d2b55);margin:1.5rem 0;padding:2.25rem 1.5rem;position:relative;overflow:hidden}.code-title{letter-spacing:.15em;text-transform:uppercase;color:#a5b4fc;margin-bottom:.75rem;font-size:.8125rem;font-weight:700}.code-value{letter-spacing:.25em;color:#fff;text-shadow:0 2px 10px #0006;margin-bottom:1rem;font-family:Courier New,Courier,monospace;font-size:3.25rem;font-weight:800}.code-instruction{color:#cbd5e1;font-size:.9375rem}.code-input-group{gap:.75rem;margin:1.5rem 0;display:flex}.code-input{letter-spacing:.2em;text-transform:uppercase;text-align:center;border:2px solid var(--gray-300);border-radius:var(--radius-md);background:#fff;outline:none;flex:1;padding:.875rem 1.25rem;font-family:Courier New,Courier,monospace;font-size:1.5rem;font-weight:700;transition:border-color .2s}.code-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4f46e526}.countdown-badge{background-color:var(--warning-light);color:#b45309;border-radius:9999px;align-items:center;gap:.375rem;padding:.375rem .75rem;font-size:.875rem;font-weight:600;display:inline-flex}.toast{border-radius:var(--radius-md);align-items:center;gap:.75rem;margin-bottom:1.25rem;padding:1rem 1.25rem;font-size:.9375rem;display:flex}.toast-error{background-color:var(--danger-light);color:#b91c1c;border:1px solid #fecaca}.toast-success{background-color:var(--success-light);color:#047857;border:1px solid #a7f3d0}.details-list{border:1px solid var(--gray-200);border-radius:var(--radius-md);margin:1.5rem 0;list-style:none;overflow:hidden}.details-item{border-bottom:1px solid var(--gray-200);justify-content:space-between;padding:.875rem 1.25rem;font-size:.9375rem;display:flex}.details-item:last-child{border-bottom:none}.details-label{color:var(--gray-500);font-weight:500}.details-value{color:var(--gray-800);text-align:right;word-break:break-all;font-weight:600}.spinner{border:3px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:20px;height:20px;animation:.8s linear infinite spin;display:inline-block}.spinner-primary{border-color:var(--primary-light);border-top-color:var(--primary)}@keyframes spin{to{transform:rotate(360deg)}}.footer{border-top:1px solid var(--gray-200);text-align:center;color:var(--gray-500);background:#fff;margin-top:auto;padding:1.5rem 0;font-size:.875rem}@media (width<=640px){.hero-title{font-size:2rem}.code-value{letter-spacing:.15em;font-size:2.25rem}.card{padding:1.25rem}.code-input-group{flex-direction:column}}