:root {
            --primary-color: #1e40af;
            /* Blue */
            --secondary-color: #0c2d99;
            /* Darker Blue for better contrast */
            --accent-color: #ffffff;
            /* White */
            --primary-dark: #0a1a3d;
            --text-primary: #000000;
            /* Black text */
            --text-secondary: #1f2937;
            /* Dark gray for secondary text */
            --bg-light: #ffffff;
            /* white background */
            --bg-cream: #f9fafb;
            /* very light gray for cards */
            --bg-lighter: #fefefe;
            /* near white for lighter backgrounds */
            --gradient-primary: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
            --gradient-secondary: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
            --shadow-sm: 0 2px 10px rgba(30, 64, 175, 0.15);
            --shadow-md: 0 4px 20px rgba(30, 64, 175, 0.2);
            --shadow-lg: 0 8px 30px rgba(30, 64, 175, 0.25);
            --border-radius: 16px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            overflow: visible;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.3;
        }

        #promoBox {
            position: sticky;
            top: 109px;
            right: 1rem;
            transition: top 0.3s ease;
        }

        #promoBox.hidden {
            opacity: 0;
            pointer-events: none;
        }

        /* Sticky Right Side Promotion Container */
        .sticky-container {
            position: relative;
            display: flex;
            justify-content: flex-end;
            /* margin-top: 2rem; */
            align-items: flex-start;
        }

        /* Sticky Right Side Promotion */
        .sticky-promo-wrapper {
            position: relative;
            width: 300px;
            max-width: 90vw;
            margin-left: 1rem;
            flex-shrink: 0;
            height: fit-content;
        }

        .sticky-promo {
            width: 300px;
            max-width: 90vw;
            background: var(--bg-cream);
            border-radius: var(--border-radius);
            padding: 1rem;
            font-family: 'Inter', sans-serif;
            color: var(--text-primary);
            border: 1.5px solid #cbd5e1;
        }

        .sticky-promo h3 {
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
            text-align: center;
        }

        .sticky-promo img {
            width: 100%;
            border-radius: var(--border-radius);
            margin-bottom: 1rem;
            border: 1.5px solid #cbd5e1;
        }

        .sticky-promo p {
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 1rem;
            text-align: center;
            font-weight: 600;
        }

        .sticky-promo a.btn-promo {
            display: block;
            background: #1e40af;
            color: var(--accent-color);
            text-align: center;
            padding: 0.85rem 1rem;
            border-radius: 12px;
            font-weight: 700;
            text-decoration: none;
            transition: var(--transition);
            border: 1.5px solid #1e40af;
        }

        .sticky-promo a.btn-promo:hover {
            background: #0c2d99;
            border-color: #0c2d99;
        }

        /* Hero Section */
        .hero-section-1 {
            background: var(--bg-light);
            color: var(--text-primary);
            padding: 120px 0 80px;
            position: relative;
            overflow: hidden;
            border-radius: var(--border-radius);
            margin-bottom: 3rem;
            box-shadow: var(--shadow-sm);
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-title {
            font-size: 2.75rem;
            font-weight: 900;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
        }

        .hero-highlight {
            color: #1e40af;
            position: relative;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            margin-bottom: 2rem;
            color: var(--text-primary);
            max-width: 600px;
            /* font-weight: 600; */
        }

        .hero-image {
            border-radius: var(--border-radius);
            overflow: hidden;
            transform: perspective(1000px) rotateY(-5deg);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .hero-image:hover {
            transform: perspective(1000px) rotateY(0deg) scale(1.03);
        }

        .hero-image img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
            filter: drop-shadow(0 0 5px rgba(30, 64, 175, 0.15));
        }

        .btn-hero {
            background: #1e40af;
            border: none;
            color: var(--accent-color);
            font-weight: 700;
            padding: 1rem 2.25rem;
            border-radius: 14px;
            transition: var(--transition);
            margin: 0.5rem;
            cursor: pointer;
            font-size: 1.1rem;
            box-shadow: var(--shadow-sm);
        }

        .btn-hero:hover {
            background: #0c2d99;
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        /* Main Layout */
        .mai-container {
            padding-top: 2rem;
            width: 100vw;
            max-width: 100vw;
            margin-right: calc(50% - 50vw);
            padding-bottom: 150px;
        }

        .mai-container {
            min-height: 75vh;
            display: flex;
            flex-wrap: wrap;
            display: -webkit-flex;
            align-items: flex-start;
            -webkit-align-items: flex-start;
            margin: 0 auto;
            padding: 0px;
        }

        .content-wrapper {
            display: flex;
            gap: 2rem;
            max-width: 100vw;
            width: 100vw;
            margin: 0 auto;
            padding: 0 1rem;
            align-items: flex-start;
        }

        /* Content Main area takes full width minus sticky promo */
        .content-main {
            flex: 1 1 auto;
            max-width: calc(100% - 320px);
        }

        /* Content Sections */
        .content-section {
            /* background: var(--bg-cream);
            border-radius: var(--border-radius); */
            /* padding: 3rem; */
            margin-bottom: 3rem;
            /* border: 1.5px solid #e2e8f0; */
            /* transition: var(--transition); */
            position: relative;
            color: var(--text-primary);
        }

        /* Added white background and spacing for paragraph content inside main content */
        .content-section p {
            /* background: var(--bg-lighter); */
            padding: 0.50rem 1.25rem;
            border-radius: 12px;
            /* margin-bottom: 1.5rem; */
            color: var(--text-primary);
            line-height: 1.6;
            /* box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05); */
        }

        /* .content-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: #1e40af;
            border-top-left-radius: var(--border-radius);
            border-top-right-radius: var(--border-radius);
        } */

        /* .content-section:hover {
            transform: translateY(-3px);
            border-color: #1e40af;
            box-shadow: var(--shadow-md);
        } */

        .section-title {
            font-size: 2rem;
            font-weight: 600;
            margin-top: 2rem;
            /* margin-bottom: 1rem; */
            text-align: center;
            position: relative;
            color: var(--text-primary);
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-secondary);
            /* margin-bottom: 3rem; */
            font-size: 1rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            font-weight: 600;
        }

        /* Cards */
        /* .info-card {
            background: var(--bg-lighter);
            border-radius: var(--border-radius);
            padding: 2rem;
            height: 100%;
            transition: var(--transition);
            border: 1.5px solid #e2e8f0;
            color: var(--text-primary);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        } */

        /* .info-card:hover {
            transform: translateY(-5px);
            border-color: #1e40af;
            box-shadow: var(--shadow-md);
        } */

        .stat-card {
            background: var(--bg-lighter);
            border-radius: var(--border-radius);
            /* padding: 2.5rem 1.5rem; */
            text-align: center;
            transition: var(--transition);
            border: 1.5px solid #e2e8f0;
            position: relative;
            overflow: hidden;
            color: var(--text-primary);
            /* box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); */
        }

        /* .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: #1e40af;
            border-top-left-radius: var(--border-radius);
            border-top-right-radius: var(--border-radius);
        } */

        .stat-card:hover {
            transform: translateY(-9px);
            border-color: #1e40af;
            box-shadow: var(--shadow-md);
        }

        .stat-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: var(--accent-color);
            font-size: 1.7rem;
            background: #1e40af;
            box-shadow: var(--shadow-sm);
        }

        .stat-number {
            font-size: 1.2rem;
            font-weight: 700;
            color: #1e40af;
            margin-bottom: 0.5rem;
        }

        /* Strategy Section */
        /* .strategy-card {
            background: var(--bg-lighter);
            border-radius: var(--border-radius);
            padding: 2.5rem;
            margin-bottom: 2rem;
            border: 1.5px solid #e2e8f0;
            transition: var(--transition);
            color: var(--text-primary);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        } */

        /* .strategy-card:hover {
            transform: translateY(-3px);
            border-color: #1e40af;
            box-shadow: var(--shadow-md);
        } */
        .strategy-card {
            margin-bottom: 2rem;
        }

        .strategy-header {
            display: flex;
            align-items: center;
            /* margin-bottom: 2rem; */
        }

        .strategy-icon {
            width: 50px;
            height: 50px;
            background: #1e40af;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1.5rem;
            color: var(--accent-color);
            font-size: 1.7rem;
            box-shadow: var(--shadow-sm);
        }

        .strategy-title {
            font-size: 1.45rem;
            font-weight: 700;
            margin: 0;
            color: var(--text-primary);
        }

        .strategy-list {
            list-style: none;
            padding: 0;
            color: var(--text-primary);
            font-weight: 400;
        }

        .strategy-list li {
            display: flex;
            align-items: flex-start;
            /* margin-bottom: 1rem; */
            padding: 0.85rem;
            /* background: var(--bg-cream);
            border-radius: 10px;
            transition: var(--transition); */
            /* box-shadow: 0 1px 6px rgba(0, 0, 0, 0.03); */
        }

        /* .strategy-list li:hover {
            background: rgba(30, 64, 175, 0.1);
            transform: translateX(5px);
            box-shadow: var(--shadow-sm);
        } */

        .strategy-list li i {
            color: #1e40af;
            margin-right: 1.25rem;
            margin-top: 0.3rem;
            flex-shrink: 0;
            font-size: 1rem;
        }

        /* Author Section */
        .author-section {
            background: var(--bg-cream);
            border-radius: var(--border-radius);
            padding: 2rem;
            margin-bottom: 2rem;
            border: 1.5px solid #e2e8f0;
            color: var(--text-primary);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .author-info {
            display: flex;
            align-items: center;
            margin-bottom: 1.5rem;
        }

        .author-avatar {
            width: 90px;
            height: 90px;
            /* border-radius: 50%; */
            margin-right: 1rem;
            object-fit: contain;

            /* border: 26px solid #1e40af; */
            /*  box-shadow: var(--shadow-sm); */
        }

        .audio-player {
            background: var(--bg-lighter);
            border-radius: 12px;
            padding: 1.5rem;
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
            border: 1.5px solid #e2e8f0;
            color: var(--text-primary);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .audio-btn {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            border: none;
            background: #1e40af;
            color: var(--accent-color);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.3rem;
            box-shadow: var(--shadow-sm);
        }

        .audio-btn:hover {
            transform: scale(1.15);
            box-shadow: var(--shadow-md);
        }

        /* Blog Cards */
            .blog-card {
                background: var(--bg-lighter);
                border-radius: var(--border-radius);
                overflow: hidden;
                transition: var(--transition);
                height: 100%;
                border: 1.5px solid #e2e8f0;
                color: var(--text-primary);
                box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            }

            .blog-card:hover {
                transform: translateY(-9px);
                border-color: #1e40af;
                box-shadow: var(--shadow-md);
            }

            .blog-card img {
                width: 100%;
                height: 220px;
                object-fit: cover;
                transition: var(--transition);
                border-bottom: 5px solid #1e40af;
                filter: drop-shadow(0 0 5px rgba(30, 64, 175, 0.15));
            }

            .blog-card:hover img {
                transform: scale(1.07);
            }

            .blog-card-body {
                padding: 2rem;
            }

            .blog-card h3 {
                font-size: 1.3rem;
                margin-bottom: 1rem;
                color: var(--text-primary);
                font-weight: 700;
            }

            .blog-card a {
                color: #1e40af;
                font-weight: 700;
                text-decoration: none;
                transition: var(--transition);
                font-size: 1rem;
            }

            .blog-card a:hover {
                color: #0c2d99;
                text-decoration: underline;
            }

            /* Explore Course Section */
            .explore-course-section {
                background: var(--bg-light);
                color: var(--text-primary);
                text-align: center;
                position: relative;
                overflow: hidden;
                padding: 4rem 1rem;
                border-radius: var(--border-radius);
                margin-top: 3rem;
                box-shadow: var(--shadow-sm);
                border: 1.5px solid #e2e8f0;
            }

            .explore-course-content {
                position: relative;
                z-index: 2;
                margin: 0 auto;
                max-width: 100%;
            }

            .explore-course-section h2 {
                color: var(--text-primary);
                font-size: 2.75rem;
                margin-bottom: 1rem;
                font-weight: 800;
            }

            .explore-course-section p {
                font-size: 1.2rem;
                margin-bottom: 2rem;
                margin-left: auto;
                margin-right: auto;
                font-weight: 600;
                color: var(--text-secondary);
            }

            .course-list {
                display: flex;
                flex-wrap: wrap;
                justify-content: center;
                gap: 1.5rem;
                margin-bottom: 2rem;
                margin-left: auto;
                margin-right: auto;
            }

            .course-item {
                background: #f3f4f6;
                border-radius: 12px;
                padding: 1rem;
                width: 160px;
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 0.75rem;
                font-weight: 700;
                cursor: pointer;
                transition: background-color 0.3s ease;
                color: var(--text-primary);
                text-decoration: none;
                border: 1.5px solid #d1d5db;
            }

            .course-item:hover {
                background: #e0e7ff;
                border-color: #1e40af;
                transform: translateY(-3px);
            }

            .course-item img {
                width: 100%;
                height: 100%;
                object-fit: cover;
                border-radius: 12px;
                transition: transform 0.3s ease;
            }

            .course-item:hover img {
                transform: scale(1.07);
            }

            .course-item span {
                color: var(--text-primary);
                text-align: center;
                font-size: 1.1rem;
            }

            .btn-explore-course {
                background: #1e40af;
                border: none;
                color: var(--accent-color);
                font-weight: 700;
                padding: 1.25rem 2.5rem;
                border-radius: 12px;
                font-size: 1.2rem;
                transition: var(--transition);
                cursor: pointer;
                display: inline-flex;
                align-items: center;
                gap: 0.5rem;
                text-decoration: none;
                box-shadow: var(--shadow-sm);
            }

            .btn-explore-course:hover {
                background: #0c2d99;
                transform: translateY(-3px);
                box-shadow: var(--shadow-md);
            }

            .course-item {
                cursor: pointer;
                flex: 1 1 100%;
                max-width: 100%;
                text-align: center;
            }

            @media (min-width: 576px) {
                .course-item {
                    flex: 1 1 48%;
                    max-width: 48%;
                }
            }

            @media (min-width: 992px) {
                .course-item {
                    flex: 1 1 42%;
                    max-width: 42%;
                }
            }

            /* Timeline Styles */
            .timeline {
                position: relative;
                padding: 2rem 0;
            }

            .timeline::before {
                content: '';
                position: absolute;
                left: 50%;
                top: 0;
                bottom: 0;
                width: 4px;
                background: #1e40af;
                transform: translateX(-50%);
                box-shadow: 0 0 10px rgba(30, 64, 175, 0.3);
            }

            .timeline-item {
                position: relative;
                margin-bottom: 3rem;
                width: 50%;
                transition: all 0.4s ease;
            }

            .timeline-item:nth-child(odd) {
                left: 0;
                padding-right: 2rem;
            }

            .timeline-item:nth-child(even) {
                left: 50%;
                padding-left: 2rem;
            }

            .timeline-content {
                background: var(--bg-cream);
                padding: 1rem;
                border-radius: var(--border-radius);
                position: relative;
                color: var(--text-primary);
                border: 1.5px solid #cbd5e1;
                font-weight: 600;
                box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            }

            .timeline-year {
                position: absolute;
                left: 50%;
                top: 50%;
                transform: translate(-50%, -50%);
                background: #1e40af;
                color: var(--accent-color);
                width: 80px;
                height: 80px;
                border-radius: 50%;
                display: flex;
                align-items: center;
                justify-content: center;
                font-weight: 800;
                font-size: 1rem;
                z-index: 10;
                box-shadow: var(--shadow-sm);
            }

            .timeline-item:nth-child(odd) .timeline-year {
                right: -130px;
                left: auto;
                box-shadow: 0 0 15px rgba(30, 64, 175, 0.4);
            }

            .timeline-item:nth-child(even) .timeline-year {
                left: -50px;
                box-shadow: 0 0 15px rgba(30, 64, 175, 0.4);
            }

            /* SWOT Analysis */
            .swot-grid {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
                margin-top: 2rem;
            }

            .swot-item {
                padding: 2rem;
                border-radius: var(--border-radius);
                text-align: center;
                transition: var(--transition);
                color: var(--text-primary);
                font-weight: 500;
                border: 2px solid transparent;
                background: #f3f4f6;
                box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
            }

            .swot-strengths {
                border-color: #2563eb;
                background: #dbeafe;
            }

            .swot-weaknesses {
                border-color: #1e3a8a;
                background: #c7d2fe;
            }

            .swot-opportunities {
                border-color: #3b82f6;
                background: #dbeafe;
            }

            .swot-threats {
                border-color: #1e40af;
                background: #cbd5e1;
            }

            .swot-item:hover {
                transform: translateY(-5px);
                box-shadow: 0 8px 30px rgba(30, 64, 175, 0.2);
            }

            @media (min-width: 1200px) {
                .d-lg-blocks {
                    display: block !important;
                }
            }

            /* Responsive Design */
            @media (max-width: 1200px) {
                .content-wrapper {
                    flex-direction: column;
                }

                .sticky-promo-wrapper {
                    position: relative;
                    width: 100%;
                    max-width: 100%;
                    margin: 2rem auto 0 auto;
                }

                .sticky-promo {
                    position: relative !important;
                    top: auto !important;
                    right: auto !important;
                    width: 100% !important;
                    max-width: 100% !important;
                    margin-left: 0 !important;
                }

                .content-main {
                    max-width: 100%;
                }

                .toc-sidebar {
                    position: relative;
                    top: 0;
                    width: 100%;
                    max-width: 600px;
                    margin: 0 auto 2rem;
                }
            }

            @media (max-width: 768px) {
                .hero-title {
                    font-size: 2.5rem;
                }

                .hero-subtitle {
                    font-size: 1.2rem;
                }

                .content-section {
                    padding: 2rem 1.5rem;
                }

                .section-title {
                    font-size: 2.25rem;
                }

                .strategy-header {
                    flex-direction: column;
                    text-align: center;
                }

                .strategy-icon {
                    margin-right: 0;
                    margin-bottom: 1rem;
                }

                .timeline::before {
                    left: 20px;
                }

                .timeline-item {
                    width: 100%;
                    left: 0 !important;
                    padding-left: 3rem !important;
                    padding-right: 0 !important;
                }

                .timeline-year {
                    left: 19px !important;
                }

                .swot-grid {
                    grid-template-columns: 1fr;
                }
            }

            @media (max-width: 576px) {
                .hero-section-1 {
                    padding: 100px 0 60px;
                }

                .hero-title {
                    font-size: 2rem;
                }

                .content-section {
                    padding: 1.5rem 1rem;
                }

                .toc-sidebar {
                    padding: 1.5rem;
                }

                .course-item {
                    width: 45%;
                }
            }

            /* Loading Animation */
            .fade-in {
                animation: fadeIn 0.6s ease-in-out;
            }

            @keyframes fadeIn {
                from {
                    opacity: 0;
                    transform: translateY(20px);
                }

                to {
                    opacity: 1;
                    transform: translateY(0);
                }
            }

            /* Custom List Styles */
            .custom-list {
                list-style: none;
                padding: 0;
                color: var(--text-primary);
                font-weight: 600;
            }

            .custom-list li {
                display: flex;
                align-items: flex-start;
                /* margin-bottom: 1rem; */
                padding: 0.85rem;
                /* background: var(--bg-lighter); */
                /* border-radius: 10px; */
                /* transition: var(--transition); */
                /* box-shadow: 0 1px 6px rgba(0, 0, 0, 0.03); */
            }

            /* .custom-list li:hover {
            background: rgba(30, 64, 175, 0.1);
            transform: translateX(5px);
            box-shadow: var(--shadow-sm);
        } */

            .custom-list li i {
                color: #1e40af;
                margin-right: 1.25rem;
                margin-top: 0.3rem;
                flex-shrink: 0;
                font-size: 1.2rem;
            }

            /* Image Styles */
            .content-image {
                width: 100%;
                height: auto;
                border-radius: var(--border-radius);
                transition: var(--transition);
                border: 1.5px solid #cbd5e1;
                box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            }

            .content-image:hover {
                transform: scale(1.03);
                border-color: #0c2d99;
                box-shadow: var(--shadow-md);
            }