.astro-route-announcer{position:absolute;left:0;top:0;clip:rect(0 0 0 0);clip-path:inset(50%);overflow:hidden;white-space:nowrap;width:1px;height:1px}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}button{border:none;outline:none;font-family:inherit}input,textarea{font-family:inherit;outline:none}*,*:before,*:after{box-sizing:border-box}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-500: #455354;--primary-600: #3a4645;--primary-700: #2f3a37;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-800: #1f2937;--gray-900: #111827;--white: #ffffff;--red-500: #ef4444;--green-500: #10b981;--bg-primary: #f9fafb;--bg-secondary: #ffffff;--text-primary: #111827;--text-secondary: #6b7280;--border-color: #e5e7eb;--shadow-color: rgb(0 0 0 / .1);--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif}[data-theme=dark]{--bg-primary: #0a0a0a;--bg-secondary: #1a1a1a;--text-primary: #f9fafb;--text-secondary: #9ca3af;--border-color: #2a2a2a;--shadow-color: rgb(0 0 0 / .5)}[data-theme=dark] ::selection{background-color:#455354;color:#e7ded3}[data-theme=dark] ::-moz-selection{background-color:#455354;color:#e7ded3}[data-theme=dark] .tab.active,[data-theme=dark] .mobile-tab-option.active{color:#e7ded3}body{font-family:var(--font-sans);background:linear-gradient(135deg,var(--bg-primary) 0%,var(--bg-secondary) 100%);color:var(--text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background .3s ease,color .3s ease}.app{min-height:100vh;padding:2rem 1rem}.container{max-width:1200px;margin:0 auto}.header{text-align:center;margin-bottom:3rem}.header-top{display:flex;align-items:center;justify-content:space-between;position:relative;margin-bottom:.5rem;width:100%;padding:0 16px}.header-controls{position:static;display:flex;align-items:center;gap:12px}.logo{display:flex;align-items:center;gap:.75rem}.theme-toggle{padding:.75rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.theme-toggle:hover{color:var(--text-primary);background:var(--gray-100);border-color:var(--gray-300)}.mobile-menu-container{position:relative}.mobile-menu-button{padding:.75rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.mobile-menu-button:hover{color:var(--text-primary);background:var(--gray-100);border-color:var(--gray-300)}.mobile-menu-dropdown{position:absolute;top:calc(100% + 8px);right:0;width:180px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;box-shadow:0 8px 32px #0000001f;z-index:1000;overflow:hidden;animation:mobileSlideIn .3s ease-out}[data-theme=dark] .mobile-menu-dropdown{box-shadow:0 8px 32px #0006}@media(min-width:769px){.header-top{justify-content:center;max-width:1200px;margin:0 auto;padding:0}.header-controls{position:absolute;right:0}.logo{justify-content:center}.container{padding-left:1rem;padding-right:1rem}.header{margin-bottom:3rem}}.mobile-menu-item{padding:12px 16px;border-bottom:1px solid var(--border-color)}.mobile-menu-item:last-child{border-bottom:none}.logo-icon{color:var(--primary-500)}.header h1{font-size:2.5rem;font-weight:800;color:var(--text-primary);letter-spacing:-.025em}.subtitle{font-size:1.125rem;color:var(--text-secondary);max-width:600px;margin:0 auto}.main-content{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:stretch}.form-section{background:var(--bg-secondary);border-radius:var(--radius-xl);padding:2rem;box-shadow:var(--shadow-lg);border:1px solid var(--border-color);transition:background .3s ease,border-color .3s ease;display:flex;flex-direction:column}.mobile-only{display:none}.desktop-only{display:flex}.desktop-tabs{display:flex;background:var(--bg-primary);border-radius:var(--radius-lg);padding:.25rem;margin-bottom:2rem}.mobile-tab-selector{display:none;margin-bottom:2rem;position:relative}.mobile-tab-button{width:100%;display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-lg);color:var(--text-primary);font-weight:500;cursor:pointer;transition:all .2s ease}.mobile-tab-button:hover{background:var(--border-color)}.mobile-tab-current{display:flex;align-items:center;gap:.75rem;font-size:1rem}.mobile-tab-chevron{color:var(--text-secondary);transition:transform .3s ease}.mobile-tab-chevron.open{transform:rotate(180deg)}.mobile-tab-dropdown{position:absolute;top:100%;left:0;right:0;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);wwshadow:var(--shadow-lg);z-index:10;overflow:hidden;margin-top:.5rem}.mobile-tab-option{width:100%;display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;background:transparent;border:none;border-bottom:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;transition:all .2s ease}.mobile-tab-option:last-child{border-bottom:none}.mobile-tab-option:hover{background:var(--bg-primary)}.mobile-tab-option.active{background:var(--primary-500);color:#fff}.mobile-tab-option-content{display:flex;align-items:center;gap:.75rem;font-size:1rem;font-weight:500}.mobile-tab-check{color:#fff}.mobile-tab-button:focus-visible,.mobile-tab-option:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px}.tab{flex:1;display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1rem;border:none;background:transparent;color:var(--text-secondary);font-weight:500;border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease;font-size:.875rem}.tab:hover{color:var(--text-primary);background:var(--border-color)}.tab.active{background:var(--bg-secondary);color:var(--primary-600);box-shadow:var(--shadow-sm);border:1px solid var(--border-color)}.form-content{min-height:300px}.form-group{margin-bottom:1.5rem}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.contact-form .form-group:last-of-type{margin-bottom:1rem}label{display:block;font-weight:600;color:var(--text-primary);margin-bottom:.5rem;font-size:.875rem}.input,.textarea{width:100%;padding:.75rem 1rem;border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:1rem;background:var(--bg-secondary);color:var(--text-primary);transition:all .2s ease;outline:none}.input:focus,.textarea:focus{border-color:var(--primary-500);box-shadow:0 0 0 3px #4553541a}.textarea{resize:vertical;min-height:100px;font-family:inherit}.hint{font-size:.875rem;color:var(--text-secondary);margin-top:.5rem}.checkbox-label{display:flex;align-items:center;gap:.75rem;cursor:pointer;font-weight:500;color:var(--text-primary);margin-bottom:0}.checkbox{width:1.125rem;height:1.125rem;border:2px solid var(--border-color);border-radius:var(--radius-sm);background:var(--bg-secondary);cursor:pointer;position:relative;transition:all .2s ease;-webkit-appearance:none;-moz-appearance:none;appearance:none}.checkbox:checked{background:var(--primary-500);border-color:var(--primary-500)}.checkbox:checked:after{content:"✓";color:#fff;font-size:.875rem;font-weight:700;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.checkbox:focus{outline:2px solid var(--primary-500);outline-offset:2px}.generate-btn{width:100%;padding:1rem 2rem;background:var(--primary-500);color:var(--white);border:none;border-radius:var(--radius-md);font-weight:600;font-size:1rem;cursor:pointer;transition:all .2s ease;margin-top:1rem}.customization-section{margin-top:2rem;border-top:1px solid var(--border-color);padding-top:1.5rem}.customization-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;padding:1rem 0;background:transparent;border:none;color:var(--text-primary);font-weight:600;font-size:1rem;cursor:pointer;transition:color .2s ease}.customization-toggle:hover{color:var(--primary-500)}.customization-toggle-content{display:flex;align-items:center;gap:.5rem}.customization-icon{color:var(--primary-500);transition:color .2s ease}.customization-toggle:hover .customization-icon{color:var(--primary-600)}.customization-chevron{color:var(--text-secondary);transition:transform .3s ease}.customization-chevron.open{transform:rotate(180deg)}.customization-panel{padding:1.5rem 0;animation:slideDown .3s ease}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.customization-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:2rem}.customization-group{display:flex;flex-direction:column;gap:.5rem}.customization-group.color-group{align-items:flex-start}.customization-group.full-width{grid-column:1 / -1}.customization-label{font-size:.875rem;font-weight:600;color:var(--text-primary);margin-bottom:.25rem;display:flex;align-items:center;gap:.375rem}.info-icon{color:var(--text-secondary);cursor:help;transition:all .2s ease;flex-shrink:0;border-radius:50%;padding:2px;outline:none}.info-icon:hover,.info-icon:focus{color:var(--primary-500);background-color:var(--gray-100);transform:scale(1.1)}.info-icon:focus{box-shadow:0 0 0 2px var(--primary-500)}[data-theme=dark] .info-icon:hover,[data-theme=dark] .info-icon:focus{background-color:var(--gray-800)}.size-display,.margin-display,.error-display{font-size:.75rem;color:var(--text-secondary);margin-bottom:.5rem}.range-slider{width:100%;height:6px;background:var(--border-color);border-radius:3px;outline:none;cursor:pointer;-webkit-appearance:none;appearance:none}.range-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;background:var(--primary-500);border-radius:50%;cursor:pointer;transition:transform .2s ease}.range-slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.range-slider::-moz-range-thumb{width:18px;height:18px;background:var(--primary-500);border-radius:50%;cursor:pointer;border:none;transition:transform .2s ease}.range-slider::-moz-range-thumb:hover{transform:scale(1.1)}.customization-select{width:100%;padding:.5rem .75rem;border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:.875rem;background:var(--bg-secondary);color:var(--text-primary);cursor:pointer;transition:border-color .2s ease}.customization-select:focus{border-color:var(--primary-500);outline:none}.color-picker{width:60px;height:40px;border:2px solid var(--border-color);border-radius:var(--radius-md);background:transparent;cursor:pointer;transition:border-color .2s ease;-webkit-appearance:none;-moz-appearance:none;appearance:none}.color-picker::-webkit-color-swatch-wrapper{padding:0}.color-picker::-webkit-color-swatch{border:none;border-radius:calc(var(--radius-md) - 2px)}.color-picker::-moz-color-swatch{border:none;border-radius:calc(var(--radius-md) - 2px)}.color-picker:hover,.color-picker:focus{border-color:var(--primary-500);outline:none}.color-presets{border-top:1px solid var(--border-color);padding-top:1.5rem}.color-controls{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-color)}.presets-title{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:1rem}.preset-buttons{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem}.preset-button{display:flex;align-items:center;gap:.75rem;padding:.75rem;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;cursor:pointer;transition:all .2s ease}.preset-button:hover{border-color:var(--primary-500);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.preset-preview{display:flex;width:24px;height:24px;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border-color)}.preset-fg,.preset-bg{width:50%;height:100%}.customization-hint{font-size:.875rem;color:var(--text-secondary);margin-top:1rem;padding:1rem;background:var(--bg-primary);border-radius:var(--radius-md);border:1px solid var(--border-color)}.logo-section,.error-correction-section{border-top:1px solid var(--border-color);padding-top:1.5rem;margin-top:1.5rem}.logo-section-title{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:1rem}.logo-upload-area{border:2px dashed var(--border-color);border-radius:var(--radius-lg);padding:2rem;text-align:center;transition:border-color .2s ease,background-color .2s ease}.logo-upload-area:hover{border-color:var(--primary-500);background-color:var(--bg-primary)}.logo-upload-input{display:none}.logo-upload-label{display:flex;flex-direction:column;align-items:center;gap:.75rem;cursor:pointer;color:var(--text-primary)}.logo-upload-icon{color:var(--primary-500);transition:color .2s ease}.logo-upload-label:hover .logo-upload-icon{color:var(--primary-600)}.logo-upload-text{font-weight:600;font-size:1rem}.logo-upload-hint{font-size:.875rem;color:var(--text-secondary)}.logo-preview-section{display:flex;flex-direction:column;gap:1.5rem}.logo-preview-container{position:relative;width:120px;height:120px;margin:0 auto;border-radius:var(--radius-lg);overflow:hidden;border:2px solid var(--border-color);background:var(--bg-primary)}.logo-preview-image{width:100%;height:100%;object-fit:cover}.logo-remove-btn{position:absolute;top:4px;right:4px;width:24px;height:24px;border-radius:50%;background:var(--red-500);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .2s ease;box-shadow:0 2px 4px #0003;z-index:10}.logo-remove-btn:hover{transform:scale(1.1)}.logo-controls{display:flex;flex-direction:column;gap:1rem}.logo-control-group{display:flex;flex-direction:column;gap:.5rem}.logo-control-label{font-size:.875rem;font-weight:600;color:var(--text-primary)}.logo-size-options,.logo-shape-options,.logo-background-options{display:flex;gap:.5rem}.logo-size-btn,.logo-shape-btn,.logo-bg-btn{flex:1;padding:.5rem .75rem;border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-secondary);color:var(--text-primary);font-size:.875rem;cursor:pointer;transition:all .2s ease}.logo-size-btn:hover,.logo-shape-btn:hover,.logo-bg-btn:hover{border-color:var(--primary-500)}.logo-size-btn.active,.logo-shape-btn.active,.logo-bg-btn.active{background:var(--primary-500);color:#fff;border-color:var(--primary-500)}.generate-btn:hover:not(.disabled){background:var(--primary-600);transform:translateY(-1px);box-shadow:var(--shadow-md)}.generate-btn:active:not(.disabled){transform:translateY(0)}.generate-btn.disabled{background:var(--border-color);color:var(--text-secondary);cursor:not-allowed}.qr-section{background:var(--bg-secondary);border-radius:var(--radius-xl);padding:2rem;box-shadow:var(--shadow-lg);border:1px solid var(--border-color);display:flex;flex-direction:column;align-items:center;justify-content:center;transition:background .3s ease,border-color .3s ease}.qr-container{display:flex;flex-direction:column;align-items:center;justify-content:center;margin-bottom:2rem;min-height:300px}.qr-canvas{border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.qr-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-secondary);text-align:center}.placeholder-icon{margin-bottom:1rem;opacity:.5}.qr-placeholder p{font-size:1.125rem;font-weight:500}.download-buttons{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;width:100%;max-width:320px}.download-format-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;padding:.875rem .75rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-weight:500;font-size:.75rem;cursor:pointer;transition:all .2s ease}.download-format-btn:hover{background:var(--bg-primary);border-color:var(--primary-500);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.download-format-btn:active{transform:translateY(0)}.download-icon{opacity:.7;transition:opacity .2s ease}.download-format-btn:hover .download-icon{opacity:1}[data-theme=dark] .download-format-btn{background:var(--bg-secondary);border-color:var(--border-color)}[data-theme=dark] .download-format-btn:hover{background:#2a2a2a;border-color:var(--primary-500)}@media(max-width:768px){.app{padding:1rem}.header h1{font-size:2rem}.main-content{grid-template-columns:1fr;gap:2rem}.form-section,.qr-section{padding:1.5rem}.desktop-tabs{display:none}.mobile-tab-selector,.mobile-only{display:block}.desktop-only{display:none}.container{padding-left:0;padding-right:0}.header{margin-bottom:2rem}.form-row{grid-template-columns:1fr}.download-buttons{max-width:300px}.download-format-btn{font-size:.75rem}.customization-grid{grid-template-columns:1fr;gap:1rem}.preset-buttons{grid-template-columns:1fr;gap:.5rem}.color-controls{grid-template-columns:1fr;gap:.75rem}.preset-button{padding:.5rem;font-size:.8rem}.customization-panel{padding:1rem 0}}@media(max-width:480px){.app{padding:.5rem}.container{padding:0}.header{margin-bottom:2rem}.header h1{font-size:1.75rem}.subtitle{font-size:1rem}.form-section,.qr-section{padding:1rem;border-radius:var(--radius-lg)}.logo{gap:.5rem}.qr-section{min-height:350px}.qr-container{min-height:250px}.download-buttons{grid-template-columns:1fr 1fr;max-width:280px;gap:.5rem}.download-format-btn{padding:.75rem .5rem;font-size:.7rem;gap:.375rem}.customization-section{margin-top:1.5rem}.customization-grid{gap:.75rem}.color-picker{width:50px;height:35px}.customization-hint{padding:.75rem;font-size:.8rem}.logo-upload-area{padding:1.5rem}.logo-preview-container{width:100px;height:100px}.logo-size-options,.logo-shape-options,.logo-background-options{flex-direction:column;gap:.5rem}.logo-size-btn,.logo-shape-btn,.logo-bg-btn{padding:.5rem;font-size:.8rem}}.generate-btn:disabled{opacity:.7;cursor:not-allowed}.tab:focus-visible,.input:focus-visible,.textarea:focus-visible,.generate-btn:focus-visible,.download-format-btn:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px}*{transition:border-color .2s ease,box-shadow .2s ease}.seo-content{margin-top:4rem}.content-section,.features-section,.qr-types-section,.use-cases-section{background:var(--bg-secondary);border-radius:var(--radius-xl);padding:2.5rem;margin-bottom:2rem;border:1px solid var(--border-color);box-shadow:var(--shadow-md);transition:background .3s ease,border-color .3s ease}.faq-section{background:var(--bg-secondary);border-radius:var(--radius-xl);padding:2rem;margin-bottom:2rem;border:1px solid var(--border-color);box-shadow:var(--shadow-md);transition:background .3s ease,border-color .3s ease}.content-section h2,.features-section h3,.qr-types-section h3,.faq-section h3,.use-cases-section h3{color:var(--text-primary);margin-bottom:1.5rem;font-weight:700;line-height:1.3}.content-section h2{font-size:2rem;text-align:center;margin-bottom:1rem}.content-section p{font-size:1.125rem;line-height:1.7;color:var(--text-secondary);text-align:center;max-width:800px;margin:0 auto}.features-section h3,.qr-types-section h3,.faq-section h3,.use-cases-section h3{font-size:1.5rem;text-align:center}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.feature-item{padding:1.5rem;background:var(--bg-primary);border-radius:var(--radius-lg);border:1px solid var(--border-color);transition:transform .2s ease,box-shadow .2s ease}.feature-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.feature-item h4{color:var(--text-primary);font-size:1.125rem;font-weight:600;margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem}.feature-item p{color:var(--text-secondary);line-height:1.6;margin:0}.qr-types-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}.qr-type{padding:1.5rem;background:var(--bg-primary);border-radius:var(--radius-lg);border:1px solid var(--border-color);transition:transform .2s ease,box-shadow .2s ease}.qr-type:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.qr-type h4{color:var(--primary-600);font-size:1.125rem;font-weight:600;margin-bottom:.75rem}.qr-type p{color:var(--text-secondary);line-height:1.6;margin:0}.faq-grid{display:grid;gap:.75rem}.faq-item{background:var(--bg-primary);border-radius:var(--radius-lg);border:1px solid var(--border-color);transition:transform .2s ease,box-shadow .2s ease;overflow:hidden}.faq-item:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.faq-question{width:100%;padding:1rem 1.25rem;background:transparent;border:none;text-align:left;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background-color .2s ease}.faq-question:hover{background:var(--border-color)}.faq-question:focus-visible{outline:2px solid var(--primary-500);outline-offset:-2px}.faq-question h4{color:var(--text-primary);font-size:1.125rem;font-weight:600;margin:0;flex:1}.faq-chevron{color:var(--text-secondary);transition:transform .3s ease;flex-shrink:0;margin-left:1rem}.faq-chevron.open{transform:rotate(180deg)}.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease}.faq-answer.open{max-height:200px;padding:.75rem 1.25rem 1rem}.faq-answer p{color:var(--text-secondary);line-height:1.6;margin:0}.use-cases-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-top:1.5rem}.use-case-card{padding:1.5rem;background:var(--bg-primary);border-radius:var(--radius-lg);border:1px solid var(--border-color);transition:all .3s ease;display:flex;gap:1rem;align-items:flex-start}.use-case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--primary-500)}.use-case-icon{flex-shrink:0;width:48px;height:48px;background:var(--primary-500);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center}.use-case-emoji{font-size:1.5rem}.use-case-content{flex:1}.use-case-title{font-size:1.125rem;font-weight:600;color:var(--text-primary);margin-bottom:.5rem;line-height:1.3}.use-case-description{font-size:.875rem;color:var(--text-secondary);line-height:1.5;margin:0}[data-theme=dark] .qr-type h4{color:#e7ded3}@media(max-width:768px){.seo-content{margin-top:3rem;padding:0 .5rem}.content-section,.features-section,.qr-types-section,.use-cases-section{padding:1.5rem}.faq-section{padding:1.25rem}.content-section h2{font-size:1.75rem}.features-section h3,.qr-types-section h3,.faq-section h3,.use-cases-section h3{font-size:1.25rem;text-align:center}.features-grid,.qr-types-grid{grid-template-columns:1fr}.feature-item,.qr-type,.faq-item{padding:1.25rem}.use-cases-grid{gap:1rem;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.use-case-card{padding:1.25rem;gap:.875rem}.use-case-icon{width:40px;height:40px}.use-case-emoji{font-size:1.25rem}}@media(max-width:480px){.seo-content{margin-top:2rem}.content-section,.features-section,.qr-types-section,.use-cases-section{padding:1rem;margin-bottom:1.5rem}.faq-section{padding:.75rem;margin-bottom:1.5rem}.content-section h2{font-size:1.5rem}.content-section p{font-size:1rem}.faq-question{padding:.75rem 1rem}.faq-answer.open{padding:.5rem 1rem .75rem}.use-cases-grid{grid-template-columns:1fr;gap:.75rem}.use-case-card{padding:1rem;gap:.75rem;flex-direction:column;text-align:center}.use-case-icon{width:36px;height:36px;align-self:center}.use-case-emoji{font-size:1.125rem}.use-case-title{font-size:1rem;margin-bottom:.375rem}.use-case-description{font-size:.8125rem}}.main-footer{padding:2rem;text-align:center;color:var(--text-secondary);margin-top:auto}.main-footer .container{max-width:1200px;margin:0 auto}.main-footer p{margin:0;font-size:.875rem}@media(max-width:768px){.main-footer{padding:1.5rem 1rem}.main-footer p{font-size:.8125rem}}.landing-page{min-height:100vh;display:flex;flex-direction:column}.landing-page .landing-header{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100}.landing-page .landing-header-top{display:flex;align-items:center;justify-content:space-between;position:relative;padding:1rem;width:100%;max-width:1200px;margin:0 auto}.landing-page .landing-header-controls{position:static;display:flex;align-items:center;gap:12px}.landing-page .landing-logo{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--text-primary)}.landing-page .landing-logo-icon{color:var(--primary-500)}.landing-page .landing-logo h1{font-size:2rem;font-weight:800;color:var(--text-primary);letter-spacing:-.025em;margin:0}.landing-page .theme-toggle{padding:.75rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.landing-page .theme-toggle:hover{color:var(--text-primary);background:var(--gray-100);border-color:var(--gray-300)}.landing-page .landing-mobile-menu-container{position:relative}.landing-page .landing-mobile-menu-button{padding:.75rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.landing-page .landing-mobile-menu-button:hover{color:var(--text-primary);background:var(--gray-100);border-color:var(--gray-300)}.landing-page .landing-mobile-menu-dropdown{position:absolute;top:calc(100% + 8px);right:0;width:180px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;box-shadow:0 8px 32px #0000001f;z-index:1000;overflow:hidden;animation:mobileSlideIn .3s ease-out}@keyframes mobileSlideIn{0%{opacity:0;transform:translateY(-8px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}[data-theme=dark] .landing-page .landing-mobile-menu-dropdown{box-shadow:0 8px 32px #0006}.landing-page .landing-mobile-menu-item{padding:12px 16px;border-bottom:1px solid var(--border-color)}.landing-page .landing-mobile-menu-item:last-child{border-bottom:none}.landing-page .mobile-only{display:block}.landing-page .desktop-only{display:none}@media(min-width:769px){.landing-page .landing-header-top{justify-content:center;padding:1rem 2rem}.landing-page .landing-header-controls{position:absolute;right:2rem}.landing-page .landing-logo{justify-content:center}.landing-page .mobile-only{display:none}.landing-page .desktop-only{display:flex}}.landing-page .hero-section{background:var(--bg-primary);padding:3rem 2rem;text-align:center;border-bottom:1px solid var(--border-color)}.landing-page .hero-section .container{max-width:800px;margin:0 auto}.landing-page .hero-title{font-size:3rem;font-weight:700;margin:0 0 1rem;line-height:1.1;color:var(--text-primary)}.landing-page .hero-subtitle{font-size:1.25rem;margin:0 0 2rem;line-height:1.5;color:var(--text-secondary)}.landing-page .container{max-width:1200px;margin:0 auto;padding:0 2rem}.landing-page .qr-generator-section{padding:3rem 0;background:var(--bg-secondary);border-top:1px solid var(--border-color)}.landing-page .qr-generator-section h2{text-align:center;margin-bottom:2rem;font-size:2rem;color:var(--text-primary);font-weight:600}.landing-page .benefits-section,.landing-page .examples-section,.landing-page .faq-section,.landing-page .how-it-works-section{padding:4rem 0;background:var(--bg-primary)}.landing-page .benefits-section:nth-child(2n),.landing-page .examples-section:nth-child(2n),.landing-page .faq-section:nth-child(2n),.landing-page .how-it-works-section:nth-child(2n){background:var(--bg-secondary)}.landing-page .hero-features{margin-top:2rem}.landing-page .feature-list{display:flex;justify-content:center;gap:2rem;flex-wrap:wrap}.landing-page .feature-item{display:flex;align-items:center;gap:.5rem;background:var(--bg-secondary);border:1px solid var(--border-color);padding:.75rem 1.5rem;border-radius:2rem;color:var(--text-secondary)}.landing-page .feature-icon{font-size:1.25rem}.landing-page .benefits-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin-top:2rem}.landing-page .benefit-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:2rem;text-align:center;transition:all .3s ease}.landing-page .benefit-card:hover{transform:translateY(-4px);box-shadow:0 8px 25px #0000001a;border-color:var(--primary-500)}.landing-page .benefit-icon{font-size:3rem;margin-bottom:1rem;display:block}.landing-page .benefit-card h3{color:var(--text-primary);margin:0 0 1rem;font-size:1.25rem}.landing-page .benefit-card p{color:var(--text-secondary);margin:0;line-height:1.6}.landing-page .how-it-works-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-top:2rem}.landing-page .how-it-works-step{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:2rem;text-align:center;position:relative;transition:all .3s ease}.landing-page .how-it-works-step:hover{transform:translateY(-2px);border-color:var(--primary-500);box-shadow:0 4px 15px #0000001a}.landing-page .step-number{width:40px;height:40px;background:var(--primary-500);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.25rem;margin:0 auto 1rem}.landing-page .how-it-works-step h3{color:var(--text-primary);margin:0 0 1rem;font-size:1.125rem}.landing-page .how-it-works-step p{color:var(--text-secondary);margin:0;line-height:1.5}.landing-page .examples-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-top:2rem}.landing-page .example-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:1.5rem;transition:all .3s ease}.landing-page .example-card:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0000001a;border-color:var(--primary-500)}.landing-page .example-card h3{color:var(--text-primary);margin:0 0 1rem;font-size:1.125rem}.landing-page .example-card p{color:var(--text-secondary);margin:0 0 1rem;line-height:1.5}.landing-page .example-tip{background:var(--bg-primary);border-left:3px solid var(--primary-500);padding:.75rem;border-radius:0 6px 6px 0;font-size:.875rem}.landing-page .example-tip strong{color:var(--text-primary)}.landing-page .faq-list{max-width:800px;margin:2rem auto 0}.landing-page .faq-item{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;margin-bottom:1rem;overflow:hidden}.landing-page .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;background:var(--bg-primary);border:none;padding:1.25rem;cursor:pointer;transition:all .2s ease;border-bottom:1px solid var(--border-color)}.landing-page .faq-question:hover{background:var(--bg-secondary)}.landing-page .faq-question h3{color:var(--text-primary);margin:0;font-size:1rem;font-weight:600;text-align:left}.landing-page .faq-chevron{color:var(--text-secondary);transition:transform .2s ease;flex-shrink:0;margin-left:1rem}.landing-page .faq-chevron.open{transform:rotate(180deg)}.landing-page .faq-answer{max-height:0;overflow:hidden;transition:all .3s ease}.landing-page .faq-answer.open{max-height:500px}.landing-page .faq-answer p{color:var(--text-secondary);margin:0;padding:1.25rem;line-height:1.6}.landing-page .benefits-section h2,.landing-page .examples-section h2,.landing-page .faq-section h2,.landing-page .how-it-works-section h2{text-align:center;color:var(--text-primary);font-size:2rem;margin:0 0 1rem}.landing-page .cta-section{padding:4rem 2rem;background:var(--bg-primary);border-top:1px solid var(--border-color);text-align:center}.landing-page .cta-section h2{font-size:2rem;margin:0 0 1rem;color:var(--text-primary)}.landing-page .cta-section p{font-size:1.125rem;margin:0 0 2rem;color:var(--text-secondary)}.landing-page .cta-button{display:inline-block;background:var(--primary-500);color:#fff;padding:1rem 2rem;border-radius:.5rem;text-decoration:none;font-weight:600;transition:all .3s ease;box-shadow:0 4px 6px #0000001a}.landing-page .cta-button:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:0 8px 15px #0003}.landing-page .landing-footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:2rem;text-align:center;color:var(--text-secondary);margin-top:auto}.landing-page .loading-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:var(--bg-primary)}.landing-page .loading-spinner{font-size:1.125rem;color:var(--text-secondary)}@media(max-width:768px){.landing-page .landing-header-top{padding:1rem}.landing-page .hero-section{padding:2rem 1rem}.landing-page .hero-title{font-size:2rem}.landing-page .hero-subtitle{font-size:1rem}.landing-page .container{padding:0 1rem}.landing-page .qr-generator-section h2{font-size:1.5rem}.landing-page .benefits-section,.landing-page .examples-section,.landing-page .faq-section,.landing-page .how-it-works-section{padding:2rem 0}.landing-page .cta-section{padding:2rem 1rem}.landing-page .cta-section h2,.landing-page .landing-logo h1{font-size:1.5rem}}.lang-pill{color:var(--text-secondary);text-decoration:none;font-size:.875rem;font-weight:700;padding:.5rem .875rem;border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-secondary);transition:color .15s ease,background .15s ease,border-color .15s ease}.lang-pill:hover{color:var(--text-primary);background:var(--gray-100);border-color:var(--gray-300)}[data-theme=dark] .lang-pill:hover{background:var(--gray-800)}.mobile-menu-container,.landing-mobile-menu-container{display:none}@media(max-width:768px){.mobile-menu-container,.landing-mobile-menu-container{display:flex;gap:.5rem;align-items:center}}