:root {
            --hw-background: #f5ecea;
            --hw-button: #c98882;
            --hw-hyperlink: #d59482;
            --hw-text: #0c0c0c;
            --hw-highlight: #4f0314;
            --hw-light: #f9f2f0;
            --hw-card-bg: #ffffff;
            --hw-success: #2e8b57;
            --hw-warning: #ff8c00;
            --hw-alert: #dc143c;
            
            --hw-spacing-xs: 0.3rem;
            --hw-spacing-sm: 0.6rem;
            --hw-spacing-md: 0.9rem;
            --hw-spacing-lg: 1.2rem;
            --hw-spacing-xl: 1.8rem;
            
            --hw-border-radius: 10px;
            --hw-border-radius-sm: 6px;
            --hw-border-width: 1.5px;
            
            --hw-shadow: 0 3px 15px rgba(0,0,0,0.07);
            --hw-shadow-hover: 0 5px 20px rgba(0,0,0,0.12);
            
            --hw-transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            background: var(--hw-background);
            color: var(--hw-text);
            line-height: 1.5;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            padding-bottom: 30px;
        }
        
        .hw-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Compact header */
        .hw-header {
            background: linear-gradient(to right, var(--hw-button), var(--hw-hyperlink));
            color: white;
            padding: 12px 0;
            text-align: center;
            border-bottom-left-radius: 16px;
            border-bottom-right-radius: 16px;
            box-shadow: var(--hw-shadow);
            margin-bottom: 0;
            position: relative;
            overflow: hidden;
    }
        
        .hw-header::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 Q50,100 100,0 L100,100 L0,100 Z" fill="rgba(255,255,255,0.08)"/></svg>');
            background-size: cover;
        }
        
        .hw-logo {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-bottom: 6px;
        }
        
        .hw-logo-icon {
            font-size: 1.6rem;
            color: white;
        }
        
        .hw-title {
            font-size: 1.7rem;
            margin-bottom: 4px;
            font-weight: 500;
            color: white;
        }
        
        .hw-subtitle {
            font-size: 1.1rem;
            font-weight: 500;
            max-width: 1000px;
            margin: 0 auto 8px;
            color: white;
            line-height: 1.0;
        }
        
        .hw-card {
            background: var(--hw-card-bg);
            border-radius: var(--hw-border-radius);
            box-shadow: var(--hw-shadow);
            padding: var(--hw-spacing-xl);
            margin-bottom: var(--hw-spacing-xl);
            transition: var(--hw-transition);
        }
        
        .hw-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--hw-shadow-hover);
        }
        
        .hw-heading {
            color: var(--hw-highlight);
            margin-bottom: var(--hw-spacing-md);
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            gap: var(--hw-spacing-sm);
            position: relative;
            padding-bottom: var(--hw-spacing-xs);
        }
        
        .hw-heading::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 70px;
            height: 3px;
            background: var(--hw-hyperlink);
            border-radius: 3px;
        }
        
        .hw-heading i {
            background: var(--hw-button);
            color: white;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        
        .hw-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
            gap: var(--hw-spacing-md);
            margin-bottom: var(--hw-spacing-md);
        }
        
        .hw-input-group {
            margin-bottom: var(--hw-spacing-sm);
        }
        
        .hw-label {
            display: block;
            margin-bottom: 4px;
            font-weight: 600;
            color: var(--hw-text);
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.95rem;
        }
        
        .hw-label i {
            color: var(--hw-button);
            font-size: 0.9rem;
        }
        
        .hw-input, .hw-select {
            width: 100%;
            padding: 8px 10px;
            border: var(--hw-border-width) solid var(--hw-light);
            border-radius: var(--hw-border-radius-sm);
            font-size: 0.95rem;
            transition: var(--hw-transition);
            background: var(--hw-light);
            height: 42px;
        }
        
        .hw-input:focus, .hw-select:focus {
            border-color: var(--hw-button);
            outline: none;
            box-shadow: 0 0 0 2px rgba(201, 136, 130, 0.2);
        }
        
        .hw-units {
            display: flex;
            gap: 6px;
            margin-top: 4px;
        }
        
        .hw-unit-btn {
            flex: 1;
            padding: 6px;
            background: var(--hw-light);
            border: var(--hw-border-width) solid var(--hw-light);
            border-radius: var(--hw-border-radius-sm);
            cursor: pointer;
            text-align: center;
            font-weight: 600;
            transition: var(--hw-transition);
            font-size: 0.85rem;
        }
        
        .hw-unit-btn.active {
            background: var(--hw-button);
            color: white;
            border-color: var(--hw-button);
        }
        
        .hw-btn {
            background: var(--hw-button);
            color: white;
            border: none;
            padding: 10px 16px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--hw-border-radius-sm);
            cursor: pointer;
            transition: var(--hw-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: var(--hw-spacing-sm);
            width: 100%;
            justify-content: center;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            height: 46px;
        }
        
        .hw-btn:hover {
            background: #b57973;
            transform: translateY(-2px);
        }
        
        .hw-btn:active {
            transform: translateY(0);
        }
        
        .hw-results-container {
            text-align: center;
            padding: var(--hw-spacing-xl) var(--hw-spacing-lg);
            background: white;
            border-radius: var(--hw-border-radius);
            display: none;
            position: relative;
            overflow: hidden;
        }
        
        .hw-results-container::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 120px;
            height: 120px;
            background: var(--hw-hyperlink);
            border-radius: 50%;
            transform: translate(30%, -30%);
            opacity: 0.1;
        }
        
        .hw-results-container::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 80px;
            background: var(--hw-button);
            border-radius: 50%;
            transform: translate(-30%, 30%);
            opacity: 0.1;
        }
        
        .hw-age-comparison {
            display: flex;
            justify-content: center;
            gap: var(--hw-spacing-lg);
            margin: var(--hw-spacing-lg) 0;
            flex-wrap: wrap;
        }
        
        .hw-age-card {
            flex: 1;
            min-width: 220px;
            padding: var(--hw-spacing-md);
            border-radius: var(--hw-border-radius);
            background: var(--hw-card-bg);
            box-shadow: var(--hw-shadow);
        }
        
        .hw-age-card.chronological {
            border-top: 4px solid var(--hw-button);
        }
        
        .hw-age-card.metabolic {
            border-top: 4px solid var(--hw-hyperlink);
        }
        
        .hw-age-label {
            font-size: 1rem;
            color: var(--hw-text);
            margin-bottom: var(--hw-spacing-xs);
        }
        
        .hw-age-value {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1;
            color: var(--hw-highlight);
        }
        
        .hw-comparison-result {
            font-size: 1.5rem;
            font-weight: 700;
            margin: var(--hw-spacing-lg) 0;
            padding: var(--hw-spacing-sm);
            border-radius: var(--hw-border-radius);
        }
        
        .hw-health-indicator {
            display: inline-flex;
            align-items: center;
            gap: var(--hw-spacing-sm);
            padding: var(--hw-spacing-xs) var(--hw-spacing-md);
            border-radius: 40px;
            font-weight: 600;
            margin: var(--hw-spacing-md) 0;
            font-size: 0.95rem;
        }
        
        .hw-health-good {
            background: rgba(46, 139, 87, 0.15);
            color: var(--hw-success);
        }
        
        .hw-health-average {
            background: rgba(255, 140, 0, 0.15);
            color: var(--hw-warning);
        }
        
        .hw-health-poor {
            background: rgba(220, 20, 60, 0.15);
            color: var(--hw-alert);
        }
        
        /* Calculator-specific compact styles */
        .hw-calculator-form {
            margin-top: -12px;
            position: relative;
            z-index: 10;
        }
        
        .hw-calculator-form .hw-input-group {
            margin-bottom: 10px;
        }
        
        .hw-calculator-form .hw-label {
            margin-bottom: 4px;
        }
        
        .hw-calculator-form .hw-units {
            margin-top: 4px;
        }
        
        .hw-calculator-form .hw-input,
        .hw-calculator-form .hw-select {
            margin-bottom: 0;
        }
        
        .hw-disclaimer {
            background: rgba(79, 3, 20, 0.08);
            border-left: 3px solid var(--hw-highlight);
            padding: var(--hw-spacing-sm);
            border-radius: 0 var(--hw-border-radius-sm) var(--hw-border-radius-sm) 0;
            margin: 0 0 var(--hw-spacing-md) 0;
            font-size: 0.85rem;
            text-align: left;
            line-height: 1.4;
        }
        
        /* Other sections styling with compact spacing */
        .hw-insights-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--hw-spacing-md);
            margin-top: var(--hw-spacing-lg);
        }
        
        .hw-insight-card {
            background: var(--hw-light);
            border-radius: var(--hw-border-radius);
            padding: var(--hw-spacing-md);
            text-align: center;
            transition: var(--hw-transition);
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            border-top: 3px solid var(--hw-button);
        }
        
        .hw-insight-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--hw-shadow-hover);
        }
        
        .hw-insight-icon {
            font-size: 2.2rem;
            margin-bottom: var(--hw-spacing-sm);
            color: var(--hw-button);
        }
        
        .hw-insight-title {
            font-weight: 700;
            margin-bottom: var(--hw-spacing-xs);
            color: var(--hw-highlight);
            font-size: 1.1rem;
        }
        
        .hw-faq-item {
            margin-bottom: var(--hw-spacing-md);
            border-bottom: 1px solid var(--hw-light);
            padding-bottom: var(--hw-spacing-md);
        }
        
        .hw-faq-question {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: var(--hw-spacing-xs);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--hw-highlight);
        }
        
        .hw-faq-answer {
            color: var(--hw-text);
            line-height: 1.6;
            font-size: 0.95rem;
        }
        
        .hw-social-sharing {
            display: flex;
            justify-content: center;
            gap: var(--hw-spacing-md);
            margin: var(--hw-spacing-lg) 0;
        }
        
        .hw-social-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            transition: var(--hw-transition);
            text-decoration: none;
            box-shadow: 0 3px 8px rgba(0,0,0,0.12);
            background: var(--hw-button);
        }
        
        .hw-social-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 12px rgba(0,0,0,0.18);
            background: var(--hw-hyperlink);
        }
        
        .hw-footer {
            text-align: center;
            margin-top: var(--hw-spacing-xl);
            color: var(--hw-text);
            font-size: 0.9rem;
        }
        
        .hw-footer-links {
            display: flex;
            justify-content: center;
            gap: var(--hw-spacing-md);
            margin-bottom: var(--hw-spacing-sm);
            flex-wrap: wrap;
        }
        
        .hw-footer-links a {
            color: var(--hw-hyperlink);
            text-decoration: none;
            font-weight: 600;
            white-space: nowrap;
            font-size: 0.9rem;
        }
        
        .hw-footer-links a:hover {
            text-decoration: underline;
        }
        
        .hw-result-highlight {
            font-size: 1.8rem;
            font-weight: 800;
            padding: var(--hw-spacing-sm);
            border-radius: var(--hw-border-radius);
            margin: var(--hw-spacing-md) 0;
            text-align: center;
        }
        
        .hw-result-good {
            background: rgba(46, 139, 87, 0.15);
            color: var(--hw-success);
            border: 2px solid var(--hw-success);
        }
        
        .hw-result-average {
            background: rgba(255, 140, 0, 0.15);
            color: var(--hw-warning);
            border: 2px solid var(--hw-warning);
        }
        
        .hw-result-poor {
            background: rgba(220, 20, 60, 0.15);
            color: var(--hw-alert);
            border: 2px solid var(--hw-alert);
        }
        
        .hw-inline-sharing {
            margin: var(--hw-spacing-md) 0;
            display: flex;
            justify-content: center;
            gap: var(--hw-spacing-xs);
            flex-wrap: wrap;
        }
        
        .hw-inline-share-btn {
            padding: 6px 12px;
            background: var(--hw-button);
            color: white;
            border-radius: 40px;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            transition: var(--hw-transition);
            font-size: 0.9rem;
        }
        
        .hw-inline-share-btn:hover {
            background: var(--hw-hyperlink);
            transform: translateY(-2px);
        }
        
        /* Product Recommendations */
        .hw-products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--hw-spacing-md);
            margin-top: var(--hw-spacing-md);
        }
        
        .hw-product-card {
            background: var(--hw-card-bg);
            border-radius: var(--hw-border-radius);
            overflow: hidden;
            transition: var(--hw-transition);
            box-shadow: var(--hw-shadow);
            display: flex;
            flex-direction: column;
        }
        
        .hw-product-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--hw-shadow-hover);
        }
        
        .hw-product-image {
            height: 160px;
            background: var(--hw-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--hw-button);
            font-size: 2.2rem;
        }
        
        .hw-product-content {
            padding: var(--hw-spacing-sm);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        
        .hw-product-title {
            font-weight: 700;
            margin-bottom: var(--hw-spacing-xs);
            color: var(--hw-highlight);
            font-size: 1.1rem;
        }
        
        .hw-product-description {
            margin-bottom: var(--hw-spacing-sm);
            flex: 1;
            font-size: 0.9rem;
        }
        
        .hw-product-price {
            font-weight: 700;
            color: var(--hw-button);
            margin-bottom: var(--hw-spacing-xs);
            font-size: 1.1rem;
        }
        
        .hw-product-btn {
            background: var(--hw-button);
            color: white;
            border: none;
            padding: 8px 12px;
            border-radius: var(--hw-border-radius-sm);
            font-weight: 600;
            cursor: pointer;
            transition: var(--hw-transition);
            text-align: center;
            text-decoration: none;
            display: block;
            font-size: 0.9rem;
        }
        
        .hw-product-btn:hover {
            background: #b57973;
        }
        
        /* Timeline */
        .hw-timeline {
            display: flex;
            flex-direction: column;
            gap: var(--hw-spacing-md);
            margin: var(--hw-spacing-lg) 0;
            position: relative;
        }
        
        .hw-timeline::before {
            content: "";
            position: absolute;
            top: 0;
            bottom: 0;
            left: 25px;
            width: 3px;
            background: var(--hw-button);
            border-radius: 2px;
        }
        
        .hw-timeline-item {
            display: flex;
            gap: var(--hw-spacing-sm);
            position: relative;
        }
        
        .hw-timeline-icon {
            width: 50px;
            height: 50px;
            background: var(--hw-button);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            flex-shrink: 0;
            z-index: 2;
        }
        
        .hw-timeline-content {
            background: var(--hw-light);
            padding: var(--hw-spacing-sm);
            border-radius: var(--hw-border-radius);
            flex: 1;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        
        .hw-timeline-title {
            font-weight: 700;
            margin-bottom: var(--hw-spacing-xs);
            color: var(--hw-highlight);
            font-size: 1.1rem;
        }
        
        /* Formula Styling */
        .hw-formula-container {
            background: var(--hw-light);
            padding: var(--hw-spacing-sm);
            border-radius: var(--hw-border-radius);
            margin: var(--hw-spacing-sm) 0;
            overflow-x: auto;
        }
        
        .hw-formula {
            font-family: 'Courier New', monospace;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--hw-highlight);
            padding: var(--hw-spacing-xs);
            background: white;
            border-radius: var(--hw-border-radius-sm);
            margin: var(--hw-spacing-xs) 0;
        }
        
        .hw-formula-explanation {
            margin: var(--hw-spacing-xs) 0;
            padding-left: var(--hw-spacing-sm);
            border-left: 2px solid var(--hw-button);
            font-size: 0.9rem;
        }
        
        .hw-example {
            background: white;
            padding: var(--hw-spacing-sm);
            border-radius: var(--hw-border-radius);
            margin: var(--hw-spacing-sm) 0;
            box-shadow: 0 2px 6px rgba(0,0,0,0.05);
            font-size: 0.9rem;
        }
        
        .hw-example-title {
            font-weight: 700;
            color: var(--hw-highlight);
            margin-bottom: var(--hw-spacing-xs);
            font-size: 1rem;
        }
        
        /* Case Study */
        .hw-case-study {
            background: white;
            border-radius: var(--hw-border-radius);
            overflow: hidden;
            margin: var(--hw-spacing-md) 0;
            box-shadow: var(--hw-shadow);
        }
        
        .hw-case-study-header {
            background: var(--hw-button);
            color: white;
            padding: var(--hw-spacing-sm);
            text-align: center;
        }
        
        .hw-case-study-content {
            padding: var(--hw-spacing-md);
        }
        
        .hw-case-study-result {
            background: var(--hw-light);
            padding: var(--hw-spacing-sm);
            border-radius: var(--hw-border-radius);
            margin-top: var(--hw-spacing-sm);
            text-align: center;
            font-weight: 600;
            color: var(--hw-highlight);
        }
        
        /* Resources Grid */
        .hw-resources-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--hw-spacing-md);
            margin-top: var(--hw-spacing-md);
        }
        
        .hw-resource-card {
            background: var(--hw-light);
            border-radius: var(--hw-border-radius);
            padding: var(--hw-spacing-md);
            text-align: center;
            transition: var(--hw-transition);
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            border-top: 3px solid var(--hw-button);
        }
        
        .hw-resource-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--hw-shadow-hover);
        }
        
        .hw-resource-icon {
            font-size: 2rem;
            margin-bottom: var(--hw-spacing-sm);
            color: var(--hw-button);
        }
        
        .hw-resource-title {
            font-weight: 700;
            margin-bottom: var(--hw-spacing-xs);
            color: var(--hw-highlight);
            font-size: 1.1rem;
        }
        
        .hw-resource-btn {
            background: var(--hw-button);
            color: white;
            border: none;
            padding: 8px 12px;
            border-radius: var(--hw-border-radius-sm);
            font-weight: 600;
            cursor: pointer;
            transition: var(--hw-transition);
            text-decoration: none;
            display: inline-block;
            margin-top: var(--hw-spacing-xs);
            font-size: 0.9rem;
        }
        
        .hw-resource-btn:hover {
            background: #b57973;
        }
        
        /* Expert Box */
        .hw-expert-box {
            background: linear-gradient(135deg, var(--hw-button), var(--hw-hyperlink));
            color: white;
            padding: var(--hw-spacing-md);
            border-radius: var(--hw-border-radius);
            margin: var(--hw-spacing-lg) 0;
            text-align: center;
        }
        
        .hw-expert-avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: white;
            margin: 0 auto var(--hw-spacing-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--hw-button);
            font-size: 2rem;
        }
        
        .hw-expert-name {
            font-weight: 700;
            font-size: 1.3rem;
            margin-bottom: var(--hw-spacing-xs);
        }
        
        .hw-expert-title {
            font-weight: 300;
            margin-bottom: var(--hw-spacing-sm);
            opacity: 0.9;
            font-size: 0.95rem;
        }
        
        /* Comparison text element */
        #comparison-text {
            font-size: 1.2rem;
            font-weight: 600;
            margin: var(--hw-spacing-md) 0;
            padding: var(--hw-spacing-sm);
            border-radius: var(--hw-border-radius);
            background: var(--hw-light);
        }
        
        .vs-circle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            background: var(--hw-button);
            color: white;
            border-radius: 50%;
            font-weight: 700;
            font-size: 1rem;
            align-self: center;
        }
        
        @media (max-width: 768px) {
            .hw-title {
                font-size: 1.5rem;
            }
            
            .hw-subtitle {
                font-size: 0.85rem;
            }
            
            .hw-grid {
                grid-template-columns: 1fr;
                gap: var(--hw-spacing-sm);
            }
            
            .hw-age-comparison {
                flex-direction: column;
                gap: var(--hw-spacing-md);
            }
            
            .hw-age-value {
                font-size: 2.2rem;
            }
            
            .hw-calculator-form {
                margin-top: -8px;
            }
            
            .hw-heading {
                font-size: 1.3rem;
            }
            
            .hw-heading i {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            
            .hw-result-highlight {
                font-size: 1.5rem;
            }
            
            .hw-social-sharing {
                gap: var(--hw-spacing-sm);
            }
            
            .hw-social-btn {
                width: 45px;
                height: 45px;
                font-size: 1.1rem;
            }
            
            .hw-timeline::before {
                left: 20px;
            }
            
            .hw-timeline-icon {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }
        
        @media (max-width: 480px) {
            .hw-title {
                font-size: 1.3rem;
            }
            
            .hw-subtitle {
                font-size: 0.8rem;
            }
            
            .hw-heading {
                font-size: 1.2rem;
            }
            
            .hw-card {
                padding: var(--hw-spacing-lg);
            }
            
            .hw-age-value {
                font-size: 2rem;
            }
            
            .hw-result-highlight {
                font-size: 1.3rem;
            }
            
            .hw-footer-links {
                flex-direction: column;
                gap: var(--hw-spacing-xs);
            }
            
            .hw-timeline::before {
                left: 18px;
            }
            
            .hw-timeline-icon {
                width: 36px;
                height: 36px;
                font-size: 0.9rem;
            }
            
            .hw-expert-avatar {
                width: 70px;
                height: 70px;
                font-size: 1.8rem;
            }
            
            .hw-expert-name {
                font-size: 1.1rem;
            }
        }