/* Layout Stability */
        .stats-workspace {
            display: flex;
            flex-direction: column;
            min-height: 100dvh;
            background: var(--bg-app);
        }
        
        /* Accessibility */
        button:focus-visible, input:focus-visible {
            outline: 3px solid var(--text-info);
            outline-offset: 2px;
        }
        
        /* SEO Content Section Base */
        .seo-content-section {
            max-width: 1100px;
            margin: 0 auto;
            padding: 60px 24px;
            color: var(--text-secondary);
            background: var(--bg-app);
            width: 100%;
            box-sizing: border-box;
            overflow-x: hidden;
        }
        
        .seo-content-section h1 {
            font-size: clamp(1.5rem, 5vw, 2.2rem);
            margin-bottom: 1rem;
            color: var(--text-primary);
            text-align: center;
            word-wrap: break-word;
            overflow-wrap: break-word;
        }
        
        .seo-content-section .lead-text {
            font-size: clamp(1rem, 3vw, 1.15rem);
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            text-align: center;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            word-wrap: break-word;
            overflow-wrap: break-word;
        }
        
        /* AI Summary Box (AEO) */
        .ai-summary-box {
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--text-info) 100%);
            color: var(--txt-func);
            padding: 28px;
            border-radius: 16px;
            margin-bottom: 40px;
            box-shadow: 0 10px 40px rgba(var(--ui-highlight-rgb), 0.3);
            width: 100%;
            box-sizing: border-box;
        }
        .ai-summary-box h2 {
            color: var(--txt-func);
            margin-top: 0;
            margin-bottom: 16px;
            font-size: clamp(1.2rem, 4vw, 1.5rem);
            word-wrap: break-word;
            text-shadow: 0 1px 2px var(--shadow-color);
        }
        .ai-summary-box ul {
            margin: 0;
            padding-left: 20px;
        }
        .ai-summary-box li {
            margin-bottom: 8px;
            line-height: 1.6;
            word-wrap: break-word;
            overflow-wrap: break-word;
            color: var(--txt-func);
            text-shadow: 0 1px 2px var(--shadow-color);
        }
        .ai-summary-title {
            color: var(--txt-func);
            margin-top: 0;
            margin-bottom: 16px;
            font-size: clamp(1.2rem, 4vw, 1.5rem);
            word-wrap: break-word;
            font-weight: 700;
            text-shadow: 0 1px 2px var(--shadow-color);
        }
        
        /* SEO Content Image */
        .seo-content-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            margin: 24px auto;
            display: block;
            box-shadow: 0 4px 12px var(--shadow-color);
        }
        .content-image-wrapper {
            margin: 32px 0;
            text-align: center;
        }

        /* Breadcrumb Navigation */
        .breadcrumb-nav {
            padding: 12px 20px;
            background: var(--bg-secondary);
            border-radius: 8px;
            margin-bottom: 32px;
            font-size: 0.95rem;
        }
        .breadcrumb-nav ol {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .breadcrumb-nav li:not(:last-child)::after {
            content: '→';
            margin-left: 8px;
            color: var(--text-secondary);
        }
        .breadcrumb-nav a {
            color: var(--nav-link-active);
            text-decoration: none;
        }
        .breadcrumb-nav a:hover {
            text-decoration: underline;
        }
        
        /* Author Card (EEAT) */
        .author-card {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-secondary);
            padding: 28px;
            border-radius: 12px;
            border-left: 4px solid var(--text-info);
            margin: 32px 0;
        }
        .author-card img {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            object-fit: cover;
        }
        .author-card h3 {
            margin-top: 0;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        .author-title {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }
        .author-bio {
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .author-links {
            display: flex;
            gap: 16px;
        }
        .author-links a {
            color: var(--nav-link-active);
            text-decoration: none;
            font-weight: 500;
        }
        
        /* Trust Badges */
        .trust-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin: 32px 0;
            width: 100%;
        }
        .trust-badge-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            background: var(--bg-secondary);
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 500;
            white-space: nowrap;
        }
        
        /* Feature Grid */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin: 40px 0;
        }
        .feature-card {
            background: var(--bg-secondary);
            padding: 28px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px var(--shadow-color);
            border-color: var(--ui-highlight);
        }
        .feature-card h3 {
            color: var(--text-primary);
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .feature-card p {
            line-height: 1.7;
            margin: 0;
        }
        
        /* Comparison Table */
        .table-wrapper {
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            margin: 24px 0;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            background: var(--bg-primary);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 32px 0;
            background: var(--bg-primary);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 12px var(--shadow-color);
            display: block;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .comparison-table thead,
        .comparison-table tbody {
            display: table;
            width: 100%;
            min-width: 500px;
        }
        .comparison-table th {
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--text-info) 100%);
            color: var(--txt-func);
            padding: 16px;
            text-align: left;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .comparison-table td {
            padding: 16px;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        .comparison-table .check::before {
            content: '✓';
            color: var(--text-success);
            font-weight: bold;
            font-size: 1.2rem;
        }
        .comparison-table .cross::before {
            content: '✗';
            color: var(--text-error);
        }
        
        /* FAQ Accordion */
        .faq-section {
            margin-top: 60px;
            border-top: 2px solid var(--border-color);
            padding-top: 40px;
            width: 100%;
        }
        .faq-section h2 {
            color: var(--text-primary);
            margin-bottom: 30px;
            font-size: clamp(1.3rem, 4vw, 1.8rem);
            text-align: center;
        }
        .faq-container {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-primary);
            list-style: none;
            font-size: clamp(1rem, 3vw, 1.1rem);
            transition: background 0.2s;
            gap: 12px;
        }
        .faq-question:hover {
            background: rgba(var(--ui-highlight-rgb), 0.05);
        }
        .faq-question::-webkit-details-marker {
            display: none;
        }
        .faq-icon {
            width: 12px;
            height: 12px;
            border-right: 2px solid var(--text-secondary);
            border-bottom: 2px solid var(--text-secondary);
            transform: rotate(45deg);
            transition: transform 0.3s;
            flex-shrink: 0;
            margin-left: 12px;
        }
        details[open] .faq-icon {
            transform: rotate(225deg);
            border-color: var(--ui-highlight);
        }
        details[open] .faq-question {
            border-bottom: 1px solid var(--border-color);
        }
        .faq-answer {
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 20px 24px;
            font-size: 1rem;
            word-wrap: break-word;
            overflow-wrap: break-word;
        }
        
        /* Related Tools */
        .related-tools {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 16px;
            margin: 32px 0;
            width: 100%;
        }
        .tool-card {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px;
            background: var(--bg-secondary);
            border-radius: 12px;
            text-decoration: none;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            transition: all 0.2s;
            word-wrap: break-word;
            overflow-wrap: break-word;
        }
        .tool-card:hover {
            border-color: var(--ui-highlight);
            transform: translateY(-2px);
        }
        .tool-card .icon {
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        .tool-card h4 {
            margin: 0 0 4px 0;
            font-size: 1rem;
        }
        .tool-card span {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        
        /* Verification Methodology */
        .verification-box {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 28px;
            margin: 32px 0;
        }
        .verification-box h2 {
            color: var(--text-primary);
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .verification-box ul {
            padding-left: 1.5rem;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        
        /* Use Case Cards */
        .use-case-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 32px 0;
        }
        .use-case-card {
            background: var(--bg-secondary);
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }
        .use-case-card h4 {
            color: var(--text-primary);
            margin-top: 0;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .use-case-card p {
            margin: 0;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        
        /* PWA Install Prompt */
        .pwa-toast {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 16px 24px;
            box-shadow: 0 10px 40px var(--shadow-color);
            z-index: 10000;
            display: none;
        }
        .pwa-toast.show {
            display: block;
        }
        .pwa-content {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .pwa-icon {
            font-size: 2rem;
        }
        .pwa-text strong {
            display: block;
            color: var(--text-primary);
        }
        .pwa-text span {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .pwa-btns {
            display: flex;
            gap: 8px;
        }
        .pwa-primary, .pwa-secondary {
            padding: 8px 16px;
            border-radius: 6px;
            border: none;
            cursor: pointer;
            font-weight: 500;
        }
        .pwa-primary {
            background: var(--ui-highlight);
            color: var(--txt-func);
        }
        .pwa-secondary {
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
        }
        
        /* Heavy Calculation Loading Indicator */
        .calculation-loading {
            position: fixed;
            top: 20px;
            right: 20px;
            background: var(--ui-highlight);
            color: var(--txt-func);
            padding: 10px 16px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.8125rem;
            z-index: 4000;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 12px var(--shadow-color);
            opacity: 0;
            transform: translateY(-20px);
            transition: opacity 0.2s, transform 0.2s;
            pointer-events: none;
        }
        .calculation-loading.active { opacity: 1; transform: translateY(0); }
        .calculation-loading::before {
            content: '';
            width: 16px;
            height: 16px;
            border: 2px solid rgba(var(--text-primary-rgb), 0.15);
            border-top-color: var(--text-primary);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }
        @keyframes spin { to { transform: rotate(360deg); } }
        
        /* Touch action for buttons */
        .stats-btn, .stats-tab, .stats-back-btn, .stats-plot-btn {
            touch-action: manipulation;
            -webkit-tap-highlight-color: transparent;
        }
        
        /* Mobile input font size to prevent zoom */
        .stats-list-cell, .stats-param-input {
            font-size: 1rem;
        }
        
        @media (min-width: 769px) {
            .stats-list-cell, .stats-param-input {
                font-size: 0.8125rem;
            }
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            .seo-content-section {
                padding: 30px 15px;
                width: 100%;
            }
            .seo-content-section h1 {
                font-size: 1.5rem;
                margin-bottom: 0.75rem;
            }
            .seo-content-section .lead-text {
                font-size: 1rem;
                margin-bottom: 1.5rem;
                padding: 0 8px;
            }
            .ai-summary-box {
                padding: 20px;
                margin-bottom: 24px;
            }
            .ai-summary-box h2 {
                font-size: 1.2rem;
            }
            .ai-summary-box ul {
                padding-left: 18px;
            }
            .ai-summary-box li {
                font-size: 0.9rem;
                margin-bottom: 6px;
            }
            .author-card {
                flex-direction: column;
                text-align: center;
                padding: 20px;
            }
            .author-links {
                justify-content: center;
            }
            .trust-badges {
                justify-content: center;
                gap: 8px;
                margin: 20px 0;
            }
            .trust-badge-item {
                padding: 8px 12px;
                font-size: 0.8rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
                margin: 24px 0;
            }
            .feature-card {
                padding: 20px;
            }
            .feature-card h3 {
                font-size: 1.1rem;
            }
            .table-wrapper {
                width: 100%;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                margin: 24px 0;
                border-radius: 12px;
                border: 1px solid var(--border-color);
                background: var(--bg-primary);
            }
            .comparison-table {
                display: block;
                overflow-x: auto;
            }
            .comparison-table thead,
            .comparison-table tbody {
                min-width: 400px;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 12px;
                font-size: 0.85rem;
            }
            .faq-section {
                margin-top: 40px;
                padding-top: 30px;
            }
            .faq-section h2 {
                font-size: 1.4rem;
                margin-bottom: 20px;
            }
            .faq-question {
                padding: 16px 20px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 16px 20px;
                font-size: 0.9rem;
            }
            .related-tools {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .tool-card {
                padding: 14px;
            }
            .verification-box {
                padding: 20px;
                margin: 24px 0;
            }
            .use-case-section {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .use-case-card {
                padding: 20px;
            }
            .calculation-loading {
                top: 10px;
                right: 10px;
                padding: 8px 12px;
                font-size: 0.75rem;
            }
        }
        
        @media (max-width: 380px) {
            .seo-content-section h1 {
                font-size: 1.3rem;
            }
            .ai-summary-box h2 {
                font-size: 1.1rem;
            }
            .stats-btn {
                font-size: 0.625rem;
                padding: 8px 6px;
            }
        }
        
        /* Statistics Page Specific Styles */
        .main-container {
            max-width: none;
            padding: 0;
            margin: 0;
            min-height: 100vh;
        }
        
        .stats-top-bar {
            flex-shrink: 0;
            height: 54px;
            background: var(--chassis-bg);
            color: var(--txt-func);
            display: flex;
            align-items: center;
            padding: 0 16px;
            border-bottom: 1px solid rgba(var(--text-primary-rgb), 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .stats-back-btn {
            background: none;
            border: none;
            color: var(--lbl-primary);
            font-size: 0.9375rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all var(--transition-fast);
        }
        
        .stats-back-btn:hover {
            background: rgba(var(--text-primary-rgb), 0.1);
        }
        
        .stats-title {
            font-weight: 700;
            color: var(--txt-func);
            font-size: 1rem;
            margin-left: 12px;
        }
        
        .stats-main-content {
            flex: 1;
            display: grid;
            grid-template-columns: 400px 1fr;
            gap: 16px;
            padding: 16px;
            max-width: 1600px;
            margin: 0 auto;
            width: 100%;
        }
        
        @media (max-width: 1024px) {
            .stats-main-content {
                display: flex;
                flex-direction: column;
                gap: 10px;
                padding: 10px;
                min-height: calc(100vh - 110px);
            }
            .stats-list-panel {
                height: 25vh;
                flex-shrink: 0;
                min-height: 180px;
            }
            .stats-viz-panel {
                flex: 1;
                min-height: 50vh;
                display: flex;
                flex-direction: column;
            }
            .stats-plot-area {
                flex: 1;
                min-height: 40vh;
                aspect-ratio: 16 / 10;
            }
        }
        
        @media (max-width: 768px) {
            .stats-main-content {
                padding: 8px;
                gap: 8px;
                min-height: calc(100vh - 100px);
            }
            .stats-list-panel {
                height: 22vh;
                min-height: 150px;
            }
            .stats-viz-panel {
                min-height: 55vh;
            }
            .stats-plot-area {
                min-height: 45vh;
                aspect-ratio: 4 / 3;
            }
            .stats-plot-btn {
                padding: 6px 10px;
                font-size: 0.6875rem;
                min-height: 32px;
            }
        }
        
        @media (max-width: 480px) {
            .stats-list-panel {
                height: 20vh;
                min-height: 140px;
            }
            .stats-viz-panel {
                min-height: 60vh;
            }
            .stats-plot-area {
                min-height: 50vh;
                aspect-ratio: 1 / 1;
                min-height: 300px;
            }
        }
        
        .stats-list-panel {
            background: var(--bg-secondary);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            display: grid;
            grid-template-rows: auto 1fr;
            overflow: hidden;
        }
        
        .stats-list-header {
            display: grid;
            grid-template-columns: 50px repeat(6, 1fr);
            background: var(--bg-tertiary);
            border-bottom: 1px solid var(--border-color);
            padding: 10px 0;
            font-weight: 700;
            font-size: 0.75rem;
            text-align: center;
            color: var(--text-secondary);
            position: sticky;
            top: 0;
        }
        
        .stats-list-body {
            flex: 1;
            overflow-y: auto;
            scroll-behavior: smooth;
        }
        
        .stats-list-row {
            display: grid;
            grid-template-columns: 50px repeat(6, 1fr);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-fast);
        }
        
        .stats-list-row:hover {
            background: rgba(var(--ui-highlight-rgb), 0.05);
        }
        
        .stats-list-index {
            background: var(--bg-tertiary);
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.625rem;
            font-weight: 600;
            border-right: 1px solid var(--border-color);
        }
        
        .stats-list-cell {
            padding: 8px;
            border: none;
            background: transparent;
            color: var(--text-primary);
            text-align: center;
            font-family: 'Courier New', monospace;
            font-size: 0.8125rem;
            outline: none;
            width: 100%;
            transition: background var(--transition-fast);
        }
        
        .stats-list-cell:focus {
            background: rgba(var(--ui-highlight-rgb), 0.1);
            color: var(--ui-highlight);
            font-weight: 700;
        }
        
        .stats-viz-panel {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        
        .stats-plot-area {
            flex: 1;
            background: var(--screen-bg);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
            min-height: 200px;
            touch-action: none;
            -webkit-touch-callout: none;
            -webkit-user-select: none;
            user-select: none;
        }
        
        .stats-canvas {
            width: 100%;
            height: 100%;
            display: block;
            touch-action: none;
            -webkit-touch-callout: none;
            -webkit-user-select: none;
            user-select: none;
        }
        
        .stats-legend {
            position: absolute;
            bottom: 12px;
            left: 12px;
            background: rgba(var(--bg-primary-rgb), 0.9);
            color: var(--text-primary);
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 0.6875rem;
            pointer-events: none;
            display: none;
            z-index: 20;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(var(--text-primary-rgb), 0.1);
        }
        
        .stats-legend-item {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .stats-legend-color {
            width: 12px;
            height: 3px;
            border-radius: 2px;
        }
        
        .stats-plot-controls {
            position: absolute;
            top: 8px;
            right: 8px;
            display: flex;
            gap: 4px;
            z-index: 10;
        }
        
        .stats-plot-btn {
            background: var(--chassis-bg);
            color: var(--txt-func);
            border: 1px solid rgba(var(--text-primary-rgb), 0.15);
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.625rem;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        
        .stats-plot-btn:hover {
            background: var(--ui-highlight);
        }
        
        .stats-control-panel {
            background: var(--bg-secondary);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            padding: 16px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex-shrink: 0;
            max-height: 40vh;
            overflow-y: auto;
        }
        
        .stats-tabs {
            display: flex;
            gap: 4px;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 8px;
        }
        
        .stats-tab {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-weight: 600;
            padding: 6px 10px;
            cursor: pointer;
            border-radius: 6px;
            transition: all var(--transition-fast);
            font-size: 0.75rem;
            flex: 1;
        }
        
        .stats-tab.active {
            color: var(--ui-highlight);
            background: rgba(var(--ui-highlight-rgb), 0.1);
        }
        
        .stats-tab-content {
            display: none;
            flex-direction: column;
            gap: 8px;
        }
        
        .stats-tab-content.active {
            display: flex;
        }
        
        .stats-btn-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
            gap: 6px;
        }
        
        .stats-btn {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-color);
            padding: 10px;
            border-radius: 6px;
            color: var(--text-primary);
            cursor: pointer;
            font-size: 0.6875rem;
            font-weight: 600;
            text-align: center;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        
        .stats-btn:hover {
            background: var(--ui-highlight);
            color: var(--txt-func);
            border-color: var(--ui-highlight);
            transform: translateY(-1px);
        }
        
        .stats-btn:active {
            transform: translateY(1px);
        }
        
        .stats-btn.danger {
            color: var(--ui-error);
            border-color: var(--ui-error);
        }
        
        .stats-btn.danger:hover {
            background: var(--ui-error);
            color: var(--txt-func);
        }
        
        .stats-dist-params {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 6px;
            margin-bottom: 8px;
        }
        
        .stats-param-input {
            padding: 6px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
            background: var(--bg-primary);
            color: var(--text-primary);
            font-size: 0.6875rem;
            text-align: center;
            width: 100%;
        }
        
        .stats-param-input:focus {
            outline: var(--focus-ring);
            border-color: var(--ui-highlight);
        }
        
        .stats-param-label {
            font-size: 0.5625rem;
            color: var(--text-secondary);
            text-align: center;
            margin-top: 2px;
        }
        
        .stats-results-panel {
            background: var(--screen-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 12px;
            font-family: 'Courier New', monospace;
            font-size: 0.6875rem;
            min-height: 120px;
            max-height: 180px;
            overflow-y: auto;
            color: var(--screen-text);
        }
        
        .stats-results-entry {
            margin-bottom: 6px;
            padding-bottom: 4px;
            border-bottom: 1px dashed var(--border-color);
        }
        
        .stats-results-entry:last-child {
            border-bottom: none;
            margin-bottom: 0;
        }
        
        .stats-results-title {
            font-weight: 700;
            color: var(--ui-highlight);
            margin-bottom: 2px;
        }
        
        .stats-results-error {
            color: var(--ui-error);
            font-weight: 600;
        }
        
        .stats-plot-cards {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        
        .stat-plot-card {
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 10px;
            box-shadow: 0 2px 5px var(--shadow-color);
        }
        
        .stat-plot-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 8px;
        }
        
        .stat-plot-title {
            font-weight: 700;
            font-size: 0.75rem;
            text-transform: uppercase;
        }
        
        .stat-plot-body {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        
        .stat-list-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 6px;
        }
        
        .stat-select {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.6875rem;
            width: 100%;
        }
        
        .stat-toggle {
            position: relative;
            display: inline-block;
            width: 34px;
            height: 18px;
        }
        
        .stat-toggle input {
            opacity: 0;
            width: 0;
            height: 0;
        }
        
        .stat-toggle-slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: var(--border-color);
            transition: .4s;
            border-radius: 18px;
        }
        
        .stat-toggle-slider:before {
            position: absolute;
            content: "";
            height: 14px;
            width: 14px;
            left: 2px;
            bottom: 2px;
            background-color: var(--txt-func);
            transition: .4s;
            border-radius: 50%;
        }
        
        input:checked + .stat-toggle-slider {
            background-color: var(--ui-highlight);
        }
        
        input:checked + .stat-toggle-slider:before {
            transform: translateX(16px);
        }
        
        /* Footer Styles */
        .legal-disclaimer {
            background: var(--bg-secondary);
            padding: 32px 24px;
            border-top: 1px solid var(--border-color);
            text-align: center;
            color: var(--text-secondary);
        }
        
        .legal-disclaimer strong {
            color: var(--text-primary);
        }
        
        .legal-links {
            margin-top: 16px;
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .legal-links a {
            color: var(--nav-link-active);
            text-decoration: none;
        }
        
        .footer {
            background: var(--bg-primary);
            padding: 48px 24px 24px;
            border-top: 1px solid var(--border-color);
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
        }
        
        .footer-col h4 {
            color: var(--text-primary);
            margin-top: 0;
            margin-bottom: 16px;
            font-size: 1rem;
        }
        
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-col li {
            margin-bottom: 8px;
        }
        
        .footer-col a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        
        .footer-col a:hover {
            color: var(--ui-highlight);
        }
        
        @media (max-width: 768px) {
            .graphing-workspace, .workspace, .main-content { 
                width: 100%; 
                max-width: 100%; 
                margin: 0; 
                box-shadow: none; 
            }
            
            #seo-content, .seo-content, .content-area { 
                padding: 30px 15px; 
                width: 100%;
                overflow: hidden;
            }
            
            #seo-content h1, .seo-content h1, .content-area h1 { 
                font-size: 1.75rem; 
                word-wrap: break-word; 
            }
            
            .feature-grid, 
            .use-case-section, 
            .related-tools,
            .calculator-grid,
            .tools-grid { 
                grid-template-columns: 1fr; 
                gap: 16px; 
            }
            
            .graph-btn-grid, .btn-grid { 
                grid-template-columns: repeat(2, 1fr); 
            }
            
            .graph-form-grid, .form-grid { 
                grid-template-columns: 1fr; 
            }
            
            .author-card { 
                flex-direction: column; 
                text-align: center; 
                padding: 20px 15px;
            }
            
            .footer-content {
                display: grid;
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 30px 20px;
                text-align: center;
            }
            
            .legal-disclaimer {
                padding: 20px 15px;
            }
            
            .legal-links {
                display: flex;
                flex-direction: column;
                gap: 12px;
            }
            
            .table-wrapper {
                margin: 16px 0;
            }
        }

        @media (max-width: 480px) {
            .graph-btn-grid, .btn-grid { 
                grid-template-columns: 1fr; 
            }
            
            .graph-eq-label, .eq-label {
                font-size: 0.75rem;
            }
            
            .ai-summary-box, .summary-box {
                padding: 16px;
            }
            
            .logo-title {
                font-size: 1.2rem !important;
            }
            
            h1 { font-size: 1.5rem; }
            h2 { font-size: 1.25rem; }
            h3 { font-size: 1.1rem; }
        }