* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body2 {
            font-family: 'Arial', sans-serif;
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: #333;
            line-height: 1.6;
            padding: 20px;
        }

        .container2 {
            max-width: 800px;
            margin: 0 auto;
            background: #fff;
            box-shadow: 0 10px 40px rgba(0,0,0,0.3);
        }

        /* Header Section */
        .header-section {
            background: linear-gradient(135deg, #000 0%, #1a1a1a 100%);
            color: #fff;
            padding: 60px 40px;
            text-align: center;
        }

        .main-title {
            font-family: 'Arial Black', sans-serif;
            font-size: 120px;
            font-weight: 900;
            line-height: 0.9;
            color: #fff;
            text-shadow: 4px 4px 0px #000;
        }

        .subtitle {
            font-family: 'Arial Black', sans-serif;
            font-size: 36px;
            font-weight: 900;
            color: #2a5298;
            text-transform: uppercase;
            margin-top: 10px;
            letter-spacing: 2px;
        }

        .author-credit {
            font-size: 14px;
            color: #999;
            margin-top: 20px;
        }

        /* Content Section */
        .content-section {
            padding: 40px;
        }

        .exercise-block {
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 2px solid #eee;
        }

        .exercise-block:last-child {
            border-bottom: none;
        }

        .exercise-number {
            font-family: 'Arial Black', sans-serif;
            font-size: 72px;
            font-weight: 900;
            color: #2a5298;
            line-height: 1;
            margin-bottom: 10px;
        }

        .exercise-name {
            font-family: 'Arial Black', sans-serif;
            font-size: 28px;
            font-weight: 900;
            color: #000;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .target-muscles {
            font-size: 14px;
            color: #2a5298;
            font-weight: bold;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid #ddd;
        }

        .exercise-description {
            font-size: 15px;
            line-height: 1.8;
            color: #333;
            margin-bottom: 20px;
        }

        .exercise-description p {
            margin-bottom: 15px;
        }

        .tip-box {
            background: linear-gradient(135deg, #2a5298 0%, #1e3c72 100%);
            color: #fff;
            padding: 20px;
            margin: 20px 0;
            border-left: 5px solid #ffe600;
        }

        .tip-box-title {
            font-family: 'Arial Black', sans-serif;
            font-size: 14px;
            color: #ffe600;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .tip-box p {
            font-size: 14px;
            line-height: 1.6;
        }

        .image-caption {
            background: #f5f5f5;
            padding: 15px;
            font-size: 13px;
            font-style: italic;
            color: #666;
            margin: 20px 0;
            border-left: 4px solid #2a5298;
        }

        .key-points {
            background: #f9f9f9;
            padding: 20px;
            margin: 20px 0;
            border-left: 4px solid #2a5298;
        }

        .key-points ol {
            margin-left: 20px;
        }

        .key-points li {
            margin-bottom: 10px;
            font-size: 14px;
            line-height: 1.6;
        }

        @media (max-width: 600px) {
            .main-title {
                font-size: 80px;
            }
            
            .subtitle {
                font-size: 24px;
            }
            
            .exercise-number {
                font-size: 48px;
            }
            
            .exercise-name {
                font-size: 22px;
            }
            
            .header-section,
            .content-section {
                padding: 30px 20px;
            }
        }

.bio-box {
            background: #f0f0f0;
            padding: 30px;
            margin-top: 40px;
            border-top: 3px solid #2a5298;
        }

        .bio-box p {
            font-size: 14px;
            line-height: 1.7;
            color: #555;
        }