:root{--ot-primary: #2563eb;--ot-color-primary: #2563eb;--ot-primary-hover: #1d4ed8;--ot-color-primary-hover: #1d4ed8;--ot-primary-active: #1e40af;--ot-primary-subtle: #eff6ff;--ot-primary-border: #bfdbfe;--ot-success: #059669;--ot-color-success: #059669;--ot-success-hover: #047857;--ot-success-subtle: #ecfdf5;--ot-success-border: #a7f3d0;--ot-warning: #d97706;--ot-color-warning: #d97706;--ot-warning-hover: #b45309;--ot-warning-subtle: #fffbeb;--ot-warning-border: #fde68a;--ot-danger: #dc2626;--ot-color-danger: #dc2626;--ot-danger-hover: #b91c1c;--ot-danger-subtle: #fef2f2;--ot-danger-border: #fecaca;--ot-info: #0284c7;--ot-color-info: #0284c7;--ot-info-subtle: #f0f9ff;--ot-info-border: #bae6fd;--ot-bg: #f8fafc;--ot-color-bg: #f8fafc;--ot-bg-subtle: #f1f5f9;--ot-color-bg-subtle: #f1f5f9;--ot-surface: #ffffff;--ot-color-surface: #ffffff;--ot-surface-elevated: #ffffff;--ot-color-surface-elevated: #ffffff;--ot-surface-card: #ffffff;--ot-border: #cbd5e1;--ot-color-border: #cbd5e1;--ot-border-subtle: #e2e8f0;--ot-border-focus: #2563eb;--ot-color-border-focus: #2563eb;--ot-focus-ring: 0 0 0 3px rgba(37, 99, 235, .25);--ot-text: #0f172a;--ot-color-text: #0f172a;--ot-text-muted: #334155;--ot-color-text-muted: #334155;--ot-text-subtle: #64748b;--ot-color-text-subtle: #64748b;--ot-text-inverse: #ffffff;--ot-spacing-1: .25rem;--ot-spacing-2: .5rem;--ot-spacing-3: .75rem;--ot-spacing-4: 1rem;--ot-spacing-5: 1.25rem;--ot-spacing-6: 1.5rem;--ot-spacing-8: 2rem;--ot-spacing-10: 2.5rem;--ot-spacing-12: 3rem;--ot-spacing-16: 4rem;--ot-radius-xs: 4px;--ot-radius-sm: 6px;--ot-radius-md: 10px;--ot-radius-lg: 16px;--ot-radius-xl: 24px;--ot-radius-full: 9999px;--ot-shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, .05);--ot-shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, .08), 0 1px 2px -1px rgba(15, 23, 42, .08);--ot-shadow-md: 0 4px 6px -1px rgba(15, 23, 42, .08), 0 2px 4px -2px rgba(15, 23, 42, .08);--ot-shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, .08), 0 4px 6px -4px rgba(15, 23, 42, .08);--ot-shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, .08), 0 8px 10px -6px rgba(15, 23, 42, .08);--ot-font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--ot-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--ot-transition: all .15s cubic-bezier(.4, 0, .2, 1);--ot-transition-smooth: all .25s cubic-bezier(.16, 1, .3, 1);--color-primary: var(--ot-primary);--color-primary-hover: var(--ot-primary-hover);--bg-body: var(--ot-surface-card);--border-color: var(--ot-border-subtle);--bg-primary-subtle: var(--ot-primary-subtle);--text-primary: var(--ot-text);--text-muted: var(--ot-text-muted)}[data-bs-theme=dark]{--ot-primary: #3b82f6;--ot-color-primary: #3b82f6;--ot-primary-hover: #60a5fa;--ot-color-primary-hover: #60a5fa;--ot-primary-active: #93c5fd;--ot-primary-subtle: rgba(59, 130, 246, .15);--ot-primary-border: rgba(59, 130, 246, .35);--ot-success: #10b981;--ot-color-success: #10b981;--ot-success-hover: #34d399;--ot-success-subtle: rgba(16, 185, 129, .15);--ot-success-border: rgba(16, 185, 129, .35);--ot-warning: #f59e0b;--ot-color-warning: #f59e0b;--ot-warning-hover: #fbbf24;--ot-warning-subtle: rgba(245, 158, 11, .15);--ot-warning-border: rgba(245, 158, 11, .35);--ot-danger: #ef4444;--ot-color-danger: #ef4444;--ot-danger-hover: #f87171;--ot-danger-subtle: rgba(239, 68, 68, .15);--ot-danger-border: rgba(239, 68, 68, .35);--ot-info: #06b6d4;--ot-color-info: #06b6d4;--ot-info-subtle: rgba(6, 182, 212, .15);--ot-info-border: rgba(6, 182, 212, .35);--ot-bg: #090d16;--ot-color-bg: #090d16;--ot-bg-subtle: #0f172a;--ot-color-bg-subtle: #0f172a;--ot-surface: #172033;--ot-color-surface: #172033;--ot-surface-elevated: #1e293b;--ot-color-surface-elevated: #1e293b;--ot-surface-card: #151d2f;--ot-border: #334155;--ot-color-border: #334155;--ot-border-subtle: #1e293b;--ot-border-focus: #60a5fa;--ot-color-border-focus: #60a5fa;--ot-focus-ring: 0 0 0 3px rgba(96, 165, 250, .35);--ot-text: #f8fafc;--ot-color-text: #f8fafc;--ot-text-muted: #cbd5e1;--ot-color-text-muted: #cbd5e1;--ot-text-subtle: #94a3b8;--ot-color-text-subtle: #94a3b8;--ot-text-inverse: #0f172a;--ot-shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, .5);--ot-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, .6), 0 1px 2px -1px rgba(0, 0, 0, .6);--ot-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .6), 0 2px 4px -2px rgba(0, 0, 0, .6);--ot-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .7), 0 4px 6px -4px rgba(0, 0, 0, .7);--ot-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .8), 0 8px 10px -6px rgba(0, 0, 0, .8);--color-primary: var(--ot-primary);--color-primary-hover: var(--ot-primary-hover);--bg-body: var(--ot-surface-card);--border-color: var(--ot-border-subtle);--bg-primary-subtle: var(--ot-primary-subtle);--text-primary: var(--ot-text);--text-muted: var(--ot-text-muted)}*{scrollbar-width:thin;scrollbar-color:var(--ot-border) transparent}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background-color:var(--ot-border);border-radius:var(--ot-radius-full)}::-webkit-scrollbar-thumb:hover{background-color:var(--ot-text-subtle)}html,body{background-color:var(--ot-bg);color:var(--ot-text);font-family:var(--ot-font-sans);min-height:100vh;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--ot-primary);text-decoration:none;transition:var(--ot-transition)}a:hover{color:var(--ot-primary-hover);text-decoration:underline}:focus-visible{outline:2px solid var(--ot-border-focus);outline-offset:2px}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{box-shadow:var(--ot-focus-ring);border-color:var(--ot-border-focus)!important;outline:none}.form-control,.form-select{background-color:var(--ot-surface);border:1px solid var(--ot-border);color:var(--ot-text);border-radius:var(--ot-radius-sm);transition:var(--ot-transition);min-height:40px}.form-control:focus,.form-select:focus{background-color:var(--ot-surface);border-color:var(--ot-border-focus);color:var(--ot-text);box-shadow:var(--ot-focus-ring)}.form-control::placeholder{color:var(--ot-text-subtle);opacity:.85}.form-control:disabled,.form-select:disabled{background-color:var(--ot-bg-subtle);color:var(--ot-text-subtle);border-color:var(--ot-border);cursor:not-allowed;opacity:.7}.input-group-text{background-color:var(--ot-bg-subtle);border:1px solid var(--ot-border);color:var(--ot-text-muted);font-weight:500}[data-bs-theme=dark] .form-control,[data-bs-theme=dark] .form-select{background-color:var(--ot-surface);border-color:var(--ot-border);color:var(--ot-text)}[data-bs-theme=dark] .form-control:focus,[data-bs-theme=dark] .form-select:focus{background-color:var(--ot-surface-elevated);border-color:var(--ot-border-focus);color:var(--ot-text)}[data-bs-theme=dark] .dropdown-menu{background-color:var(--ot-surface-elevated);border-color:var(--ot-border);color:var(--ot-text)}[data-bs-theme=dark] .dropdown-item{color:var(--ot-text)}[data-bs-theme=dark] .dropdown-item:hover,[data-bs-theme=dark] .dropdown-item:focus{background-color:var(--ot-bg-subtle);color:var(--ot-primary-hover)}[data-bs-theme=dark] .card{background-color:var(--ot-surface);border-color:var(--ot-border);color:var(--ot-text)}[data-bs-theme=dark] .table{color:var(--ot-text);border-color:var(--ot-border)}[data-bs-theme=dark] .table>:not(caption)>*>*{background-color:transparent;color:var(--ot-text);border-bottom-color:var(--ot-border)}[data-bs-theme=dark] .modal-content{background-color:var(--ot-surface);border-color:var(--ot-border);color:var(--ot-text)}.ot-navbar{background-color:var(--ot-surface);border-bottom:1px solid var(--ot-border-subtle);position:sticky;top:0;z-index:1040;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 1px 3px #0000000a;transition:var(--ot-transition)}.ot-brand{font-weight:700;font-size:1.25rem;color:var(--ot-text)!important;display:flex;align-items:center;gap:.5rem;letter-spacing:-.02em}.ot-brand-logo{width:34px;height:34px;object-fit:contain;transition:transform .25s cubic-bezier(.34,1.56,.64,1);filter:drop-shadow(0 2px 5px rgba(255,107,0,.28))}.ot-brand-full-logo{height:34px;width:auto;aspect-ratio:1024 / 341;object-fit:contain;transition:transform .25s cubic-bezier(.34,1.56,.64,1);filter:drop-shadow(0 2px 5px rgba(255,107,0,.2));vertical-align:middle}.ot-logo-dark-theme{display:none!important}.ot-logo-light-theme,[data-bs-theme=dark] .ot-logo-dark-theme{display:inline-block!important}[data-bs-theme=dark] .ot-logo-light-theme{display:none!important}.ot-brand:hover .ot-brand-logo{transform:rotate(25deg) scale(1.1)}.ot-brand:hover .ot-brand-full-logo{transform:scale(1.03)}.ot-brand-name{font-weight:800;letter-spacing:-.03em}.ot-brand-badge{font-size:.68rem;font-weight:600;letter-spacing:.03em;padding:.2rem .6rem;border-radius:var(--ot-radius-full);background-color:var(--ot-primary-subtle);color:var(--ot-primary);border:1px solid var(--ot-primary-border);line-height:1.2}.ot-nav-link{color:var(--ot-text-muted)!important;font-weight:500;font-size:.875rem;padding:.35rem .75rem!important;border-radius:var(--ot-radius-md);transition:var(--ot-transition)}.ot-nav-link:hover,.ot-nav-link.active{color:var(--ot-text)!important;background-color:var(--ot-bg-subtle)}.ot-navbar .btn{height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--ot-radius-md);font-size:.8125rem;font-weight:500;border-color:var(--ot-border-subtle);background-color:var(--ot-surface);color:var(--ot-text-muted);transition:var(--ot-transition)}.ot-navbar 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var(--ot-border);border-radius:var(--ot-radius-md);padding:1.25rem;transition:var(--ot-transition);height:100%;display:flex;flex-direction:column}.ot-card:hover{transform:translateY(-2px);border-color:var(--ot-border-focus);box-shadow:var(--ot-shadow-md)}.ot-tool-card{text-decoration:none;color:inherit;cursor:pointer}.ot-tool-card:hover{text-decoration:none}.ot-tool-icon-wrap{width:44px;height:44px;border-radius:var(--ot-radius-md);background-color:var(--ot-primary-subtle);color:var(--ot-primary);display:flex;align-items:center;justify-content:center;font-size:1.35rem;margin-bottom:.9rem}.ot-tool-title{font-weight:600;font-size:1.05rem;color:var(--ot-text);margin-bottom:.35rem}.ot-tool-desc{font-size:.875rem;color:var(--ot-text-muted);line-height:1.5;margin-bottom:.75rem;flex-grow:1}.ot-tool-meta{display:flex;align-items:center;justify-content:space-between;font-size:.75rem;color:var(--ot-text-subtle);margin-top:auto}.ot-category-card{text-decoration:none!important;color:inherit!important;background-color:var(--ot-surface);border:1px 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.ot-cat-icon-wrap{transform:scale(1.08)}.ot-cat-title{font-size:1.05rem;font-weight:700;color:var(--ot-text);margin-bottom:.45rem;letter-spacing:-.015em;line-height:1.3}.ot-cat-desc{font-size:.85rem;color:var(--ot-text-muted);line-height:1.55;margin-bottom:1.25rem;flex-grow:1}.ot-cat-footer{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:.85rem;border-top:1px solid var(--ot-border);font-size:.8125rem}.ot-cat-count{font-weight:600;color:var(--ot-text-muted);display:inline-flex;align-items:center;gap:.4rem;font-size:.8rem}.ot-cat-count:before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background-color:var(--ot-primary)}.ot-cat-arrow-wrap{display:inline-flex;align-items:center;gap:.3rem;color:var(--ot-primary);font-weight:600;font-size:.8rem}.ot-cat-arrow{transition:transform .2s ease;font-size:.875rem}.ot-category-card:hover 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var(--ot-border);border-radius:var(--ot-radius-lg);padding:1.75rem;box-shadow:var(--ot-shadow-sm);margin-bottom:2.5rem}.ot-dropzone{border:2px dashed var(--ot-border);border-radius:var(--ot-radius-md);background-color:var(--ot-bg-subtle);padding:2.5rem 1.5rem;text-align:center;cursor:pointer;transition:var(--ot-transition);position:relative}.ot-dropzone:hover,.ot-dropzone.drag-over{border-color:var(--ot-primary);background-color:var(--ot-primary-subtle)}.ot-dropzone-icon{font-size:2.5rem;color:var(--ot-primary);margin-bottom:.75rem}.ot-dropzone-title{font-weight:600;font-size:1.1rem;color:var(--ot-text);margin-bottom:.25rem}.ot-dropzone-hint{font-size:.85rem;color:var(--ot-text-muted)}.ot-output-box{background-color:var(--ot-bg-subtle);border:1px solid var(--ot-border);border-radius:var(--ot-radius-md);padding:1.25rem;position:relative}.ot-output-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem}.ot-output-title{font-weight:600;font-size:.95rem;color:var(--ot-text)}.ot-code-preview{font-family:var(--ot-font-mono);font-size:.875rem;background-color:var(--ot-surface);border:1px solid var(--ot-border);border-radius:var(--ot-radius-sm);padding:1rem;max-height:450px;overflow:auto;white-space:pre-wrap;word-break:break-all}#qr-preview-canvas{width:100%!important;max-width:248px!important;height:auto!important;aspect-ratio:1 / 1!important;object-fit:contain!important;margin:0 auto}.ot-privacy-badge{display:inline-flex;align-items:center;gap:.4rem;font-size:.8rem;font-weight:500;color:var(--ot-success);background-color:var(--ot-success-subtle);border:1px solid rgba(16,185,129,.2);padding:.3rem .65rem;border-radius:var(--ot-radius-full)}.ot-ad-slot-wrapper{margin:2.5rem 0;text-align:center;position:relative}.ot-ad-slot-wrapper:before{content:"Advertisement";display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ot-text-subtle);margin-bottom:.4rem}.ot-ad-slot-content{min-height:100px;background-color:var(--ot-bg-subtle);border:1px dashed var(--ot-border);border-radius:var(--ot-radius-md);display:flex;align-items:center;justify-content:center;color:var(--ot-text-subtle);font-size:.85rem}.ot-palette-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#0f172aa6;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1060;display:flex;align-items:flex-start;justify-content:center;padding:5rem 1rem 2rem;animation:otFadeIn .15s ease-out}.ot-palette-modal{background-color:var(--ot-surface);border:1px solid var(--ot-border-subtle);border-radius:var(--ot-radius-lg);box-shadow:0 20px 45px -10px #0f172a66;width:100%;max-width:620px;max-height:80vh;display:flex;flex-direction:column;overflow:hidden;animation:otSlideDown .15s ease-out}.ot-palette-input-wrap{padding:1rem 1.25rem;border-bottom:1px solid var(--ot-border-subtle);display:flex;align-items:center;gap:.75rem;background-color:var(--ot-surface)}.ot-palette-input{border:none;background:transparent;color:var(--ot-text);font-size:1.15rem;width:100%;outline:none}.ot-palette-results{overflow-y:auto;overflow-x:hidden;padding:.5rem;max-height:400px;scrollbar-width:thin}.ot-palette-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 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