:root{--color-primary: #34D399;--color-primary-dark: #10B981;--color-primary-light: #A7F3D0;--color-warning: #F97316;--color-success: #22C55E;--color-error: #EF4444;--color-bg: #F9FAFB;--color-bg-secondary: #FFFFFF;--color-bg-card: #FFFFFF;--color-text: #1F2937;--color-text-secondary: #6B7280;--color-text-tertiary: #9CA3AF;--color-border: #E5E7EB;--color-border-light: #F3F4F6;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-full: 9999px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-size-xs: 12px;--font-size-sm: 14px;--font-size-base: 16px;--font-size-lg: 18px;--font-size-xl: 20px;--font-size-2xl: 24px;--font-size-3xl: 30px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);background:linear-gradient(180deg,var(--color-bg) 0%,rgba(52,211,153,.05) 100%);color:var(--color-text);min-height:100vh;line-height:1.5}#root{max-width:480px;margin:0 auto;min-height:100vh}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.card{background:var(--color-bg-card);border-radius:var(--radius-xl);padding:var(--spacing-lg);box-shadow:var(--shadow-md)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-lg);font-family:var(--font-family);font-size:var(--font-size-base);font-weight:600;border:none;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));color:#fff;box-shadow:0 4px 14px #10b9814d}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 20px #10b98166}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--color-bg);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover:not(:disabled){background:var(--color-border-light)}.input{width:100%;padding:var(--spacing-lg);font-family:var(--font-family);font-size:var(--font-size-lg);font-weight:600;border:2px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-bg-card);color:var(--color-text);transition:border-color var(--transition-fast)}.input:focus{outline:none;border-color:var(--color-primary)}.input::placeholder{color:var(--color-text-tertiary);font-weight:400}.input-mono{font-family:SF Mono,Menlo,Monaco,monospace;text-transform:uppercase;letter-spacing:.05em}.modal-overlay{position:fixed;inset:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:flex-end;justify-content:center;z-index:100;animation:fadeIn var(--transition-fast)}.modal-content{background:var(--color-bg-card);border-radius:var(--radius-xl) var(--radius-xl) 0 0;width:100%;max-width:480px;max-height:90vh;overflow-y:auto;animation:slideUp var(--transition-normal)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-tertiary)}.app{display:flex;flex-direction:column;min-height:100vh;padding:var(--spacing-lg) var(--spacing-md)}.app-header{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-xl)}.app-logo-link{display:block;transition:transform .2s ease;flex-shrink:0}.app-logo-link:active{transform:scale(.95);opacity:.8}.app-logo{width:56px;height:56px;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);display:block}.app-title-group{text-align:left}.app-title{font-size:var(--font-size-2xl);font-weight:700;color:var(--color-text);margin:0}.app-subtitle{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin:0}.main-card{margin-bottom:var(--spacing-lg)}.brand-selector{display:flex;align-items:center;justify-content:space-between;width:100%;padding:var(--spacing-lg);background:var(--color-bg);border:2px solid var(--color-border);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);margin-bottom:var(--spacing-md);font-family:var(--font-family)}.brand-selector:hover{border-color:var(--color-primary)}.brand-selector-text{font-size:var(--font-size-lg);font-weight:600;color:var(--color-text)}.brand-selector.placeholder .brand-selector-text{color:var(--color-text-tertiary)}.brand-selector-arrow{color:var(--color-text-secondary)}.batch-input-wrapper{position:relative;margin-bottom:var(--spacing-lg)}.batch-input-wrapper .input{padding-right:48px}.batch-clear{position:absolute;right:12px;top:50%;transform:translateY(-50%);width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:var(--color-border);border:none;border-radius:var(--radius-full);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast)}.batch-clear:hover{background:var(--color-text-tertiary);color:#fff}.decode-button{width:100%}.loading-spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.app-footer{margin-top:auto;padding:var(--spacing-xl) 0 var(--spacing-lg);text-align:center}.app-footer-text{font-size:var(--font-size-xs);color:var(--color-text-tertiary)}.app-footer-link{color:var(--color-primary-dark);text-decoration:none}.app-footer-link:hover{text-decoration:underline}.home-banner{margin-top:var(--spacing-lg)}.brand-picker{display:flex;flex-direction:column;max-height:85vh}.brand-picker-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md) var(--spacing-lg);border-bottom:1px solid var(--color-border-light)}.brand-picker-header h2{font-size:var(--font-size-lg);font-weight:600;margin:0}.brand-picker-close{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--color-bg);border:none;border-radius:var(--radius-full);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast)}.brand-picker-close:hover{background:var(--color-border);color:var(--color-text)}.brand-picker-search{padding:var(--spacing-md) var(--spacing-lg);border-bottom:1px solid var(--color-border-light)}.brand-picker-search .input{font-size:var(--font-size-base);font-weight:400}.brand-picker-content{flex:1;overflow-y:auto;padding:var(--spacing-md) var(--spacing-lg)}.brand-section{margin-bottom:var(--spacing-lg)}.brand-section-title{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text-secondary);margin-bottom:var(--spacing-sm);text-transform:uppercase;letter-spacing:.05em}.brand-section-letter{color:var(--color-primary-dark)}.brand-pills{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.brand-pill{padding:var(--spacing-sm) var(--spacing-md);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-full);font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:500;color:var(--color-text);cursor:pointer;transition:all var(--transition-fast)}.brand-pill:hover{background:var(--color-primary-light);border-color:var(--color-primary)}.brand-list{display:flex;flex-direction:column}.brand-item{display:block;width:100%;padding:var(--spacing-md);background:none;border:none;border-bottom:1px solid var(--color-border-light);font-family:var(--font-family);font-size:var(--font-size-base);text-align:left;color:var(--color-text);cursor:pointer;transition:background var(--transition-fast)}.brand-item:last-child{border-bottom:none}.brand-item:hover{background:var(--color-bg)}.brand-item.selected{color:var(--color-primary-dark);font-weight:600}.brand-empty{text-align:center;padding:var(--spacing-2xl);color:var(--color-text-tertiary)}.download-banner{display:flex;flex-direction:column;padding:var(--spacing-lg);background:linear-gradient(135deg,var(--color-primary-light),rgba(52,211,153,.15));border-radius:var(--radius-lg);gap:var(--spacing-lg)}.download-banner-header{display:flex;align-items:center;gap:var(--spacing-md)}.download-banner-icon{border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.download-banner-text{display:flex;flex-direction:column;text-align:left}.download-banner-title{font-size:var(--font-size-lg);font-weight:700;color:var(--color-text);margin-bottom:2px}.download-banner-subtitle{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.download-banner-features-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.feature-row{display:flex;align-items:center;gap:var(--spacing-sm);font-size:var(--font-size-sm);color:var(--color-text)}.feature-icon{color:var(--color-primary-dark);flex-shrink:0}.download-btn-full{width:100%;padding:12px 0;font-size:var(--font-size-base)}.download-modal{padding:var(--spacing-xl);text-align:center}.download-modal-icon{margin-bottom:var(--spacing-lg)}.download-modal-icon img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}.download-modal-title{font-size:var(--font-size-2xl);font-weight:700;margin-bottom:var(--spacing-sm)}.download-modal-subtitle{font-size:var(--font-size-base);color:var(--color-text-secondary);margin-bottom:var(--spacing-lg)}.download-features{list-style:none;text-align:left;background:var(--color-bg);border-radius:var(--radius-lg);padding:var(--spacing-md);margin-bottom:var(--spacing-lg)}.download-features li{padding:var(--spacing-sm) 0;color:var(--color-text);font-size:var(--font-size-sm)}.download-modal-actions{display:flex;flex-direction:column;gap:var(--spacing-sm)}.download-modal-actions .btn{width:100%}.result-modal{padding:var(--spacing-xl);text-align:center}.result-icon{width:80px;height:80px;margin:0 auto var(--spacing-lg);display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full)}.result-icon.success{background:linear-gradient(135deg,var(--color-primary-light),rgba(52,211,153,.2));color:var(--color-primary-dark)}.result-icon.error{background:linear-gradient(135deg,#fee2e2,#ef444433);color:var(--color-error)}.result-title{font-size:var(--font-size-xl);font-weight:600;margin-bottom:var(--spacing-sm)}.result-content{background:var(--color-bg);border-radius:var(--radius-lg);padding:var(--spacing-md);margin-bottom:var(--spacing-lg)}.result-row{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md) 0}.result-row:not(:last-child){border-bottom:1px solid var(--color-border-light)}.info-modal-overlay{position:absolute;inset:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:2000;border-radius:var(--radius-xl);padding:var(--spacing-lg);animation:fadeIn var(--transition-fast)}.info-modal-content{background:var(--color-surface);width:100%;max-width:320px;padding:var(--spacing-xl);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);text-align:center;border:1px solid var(--color-border-light);animation:scaleIn var(--transition-fast)}.info-modal-title{font-size:var(--font-size-lg);font-weight:600;margin-bottom:var(--spacing-md);color:var(--color-text)}.info-modal-message{font-size:var(--font-size-base);color:var(--color-text-secondary);line-height:1.6;margin-bottom:var(--spacing-xl);text-align:left}.result-label{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.result-label-with-icon{display:flex;align-items:center;gap:var(--spacing-xs);font-size:var(--font-size-sm);color:var(--color-text-secondary)}.info-icon{display:inline-flex;align-items:center;justify-content:center;background:none;border:none;padding:0;color:var(--color-text-tertiary);cursor:pointer;transition:color var(--transition-fast)}.info-icon:hover{color:var(--color-primary)}.result-value{font-size:var(--font-size-base);font-weight:500;color:var(--color-text)}.result-batch{font-family:SF Mono,Menlo,monospace;text-transform:uppercase}.result-date{font-size:var(--font-size-lg);font-weight:700;color:var(--color-primary-dark)}.result-error-message{padding:0 0 var(--spacing-md) 0;color:var(--color-error);font-size:var(--font-size-sm);text-align:center}.result-banner{margin-bottom:var(--spacing-md)}.btn-small{padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-sm)}.result-actions{display:flex;flex-direction:column;gap:var(--spacing-sm)}.result-actions .btn{width:100%}