:root {
            --primary-color: #4361ee;
            --primary-light: rgba(67, 97, 238, 0.1);
            --secondary-color: #f72585;
            --dark-color: #212529;
            --light-color: #f8f9fa;
            --gray-color: #6c757d;
            --gradient-blue: linear-gradient(135deg, var(--primary-color), #3a0ca3);
            --gradient-green: linear-gradient(90deg, #4cc9f0 0%, #4361ee 100%);
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        body {
            font-family: 'Poppins', sans-serif;
            color: var(--dark-color);
            line-height: 1.6;
            overflow-x: hidden;
            background-color: #ffffff;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
        }

        a {
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .btn {
            padding: 12px 24px;
            border-radius: 50px;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            color: white;
        }

        .btn-primary:hover {
            background-color: #3a56e8;
            border-color: #3a56e8;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(67, 97, 238, 0.3);
        }

        .btn-outline-primary {
            color: var(--primary-color);
            border-color: var(--primary-color);
        }

        .btn-outline-primary:hover {
            background-color: var(--primary-color);
            color: white;
        }

        .btn-danger {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
        }

        .btn-danger:hover {
            background-color: #e5177e;
            border-color: #e5177e;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(247, 37, 133, 0.3);
        }

        .btn-outline-light:hover {
            color: var(--dark-color);
        }

        .btn-cta {
            font-weight: 600;
            padding: 12px 28px;
            position: relative;
            overflow: hidden;
        }

        .btn-cta:after {
            content: '';
            position: absolute;
            top: -50%;
            left: -60%;
            width: 200%;
            height: 200%;
            background: rgba(255, 255, 255, 0.2);
            transform: rotate(30deg);
            transition: all 0.3s ease;
        }

        .btn-cta:hover:after {
            left: 100%;
        }

        .section-title {
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title:after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background: var(--gradient-green);
            margin: 15px auto 0;
            border-radius: 2px;
        }

        .section-subtitle {
            color: var(--gray-color);
            margin-bottom: 30px;
            font-size: 1.1rem;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            padding: 150px 0 100px;
            background-color: #ffffff;
            text-align: center;
            overflow: hidden;
        }

        .hero-section:before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 150%;
            height: 150%;
            background: radial-gradient(circle, rgba(67, 97, 238, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
            z-index: 0;
        }

        .hero-background {
            position: relative;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
        }

        .hero-bg-image {
            width: 100%;
            height: auto;
            display: block;
            border-radius: 16px;
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
            transform: perspective(1000px) rotateX(10deg) rotateY(0deg) rotateZ(0deg);
            transition: all 0.5s ease;
        }

        .hero-bg-image:hover {
            transform: perspective(1000px) rotateX(5deg) rotateY(0deg) rotateZ(0deg);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            margin-bottom: 40px;
        }

        .hero-title {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
            color: #000;
            background: linear-gradient(90deg, #4361ee, #3a0ca3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: #666;
            margin-bottom: 30px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .trust-badges {
            font-size: 14px;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .trust-badge-item {
            display: flex;
            align-items: center;
            color: #444;
            background: rgba(255, 255, 255, 0.8);
            padding: 8px 16px;
            border-radius: 50px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .trust-badge-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
        }

        /* About Section */
        .about-section {
            position: relative;
            padding: 60px 0;
            background: #ffffff;
            overflow: hidden;
        }
        
        .about-section:before {
            content: '';
            position: absolute;
            top: -50%;
            width: 100%;
            height: 200%;
            background: radial-gradient(circle, rgba(67, 97, 238, 0.05) 0%, rgba(248, 249, 250, 0) 70%);
            z-index: 0;
        }
        
        .feature-card {
            border: none;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            transform: translateY(20px);
            opacity: 0;
            background-color: #ffffff;
            position: relative;
            overflow: hidden;
            height: 100%;
            padding: 30px;
            display: flex;
            flex-direction: column;
        }
        
        .feature-card:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient-green);
        }
        
        .feature-card.animated {
            transform: translateY(0);
            opacity: 1;
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(67, 97, 238, 0.15);
        }
        
        .feature-icon-wrapper {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), #3a0ca3);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 32px;
            margin-bottom: 20px;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            box-shadow: 0 10px 20px rgba(67, 97, 238, 0.2);
        }
        
        .feature-card:hover .feature-icon-wrapper {
            transform: rotateY(180deg) scale(1.1);
        }
        
        .feature-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        
        .feature-text {
            color: var(--gray-color);
            font-size: 0.95rem;
            line-height: 1.7;
            flex-grow: 1;
        }
        
        .features-list {
            list-style-type: none;
            padding-left: 20px;
            text-align: left;
            margin-top: 15px;
        }
        
        .features-list li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: var(--gray-color);
        }
        
        .features-list li:before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-size: 0.8rem;
        }

        /* Key Points Section */
        .key-points-section {
            padding: 60px 0;
            background: #ffffff;
            position: relative;
        }

        .key-points-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 150px;
            background: linear-gradient(to bottom, #f8f9fa 0%, rgba(248, 249, 250, 0) 100%);
            z-index: 0;
        }

        .features-list {
            list-style-type: none;
            padding-left: 0;
            margin-top: 20px;
        }

        .features-list li {
            position: relative;
            padding-left: 30px;
            margin-bottom: 12px;
            transition: all 0.3s ease;
        }

        .features-list li:hover {
            transform: translateX(5px);
        }

        .features-list li:before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--primary-color);
        }

        /* Video Gallery Section */
        .video-gallery-section {
            background-color: #f8f9fa;
            padding: 60px 0;
        }

        .video-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            padding: 20px;
            height: 100%;
        }

        .video-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        }

        .video-title {
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--dark-color);
        }

        .video-link {
            color: var(--primary-color);
            font-size: 0.9rem;
            display: inline-block;
            margin-top: 8px;
        }

        .video-link:hover {
            color: #3a0ca3;
            text-decoration: underline;
        }

        .video-player {
            border-radius: 8px;
            overflow: hidden;
        }

        .video-player video {
            width: 100%;
            border-radius: 8px;
        }

        /* Newsletter Section */
        .newsletter-section {
            padding: 60px 0;
            background: #f8f9fa;
            position: relative;
        }

        .newsletter-form .form-control {
            height: 60px;
            border-radius: 50px;
            padding: 0 25px;
            border: none;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .newsletter-form .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(67, 97, 238, 0.25);
        }

        .newsletter-form .btn {
            border-radius: 50px;
            padding: 0 30px;
            height: 60px;
            position: absolute;
            right: 5px;
            top: 5px;
        }

        /* Back to Top Button */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 60px;
            height: 60px;
            background: var(--gradient-green);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            z-index: 999;
            box-shadow: 0 10px 30px rgba(67, 97, 238, 0.3);
        }

        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            background: linear-gradient(90deg, #4cc9f0 0%, #4361ee 100%);
            color: white;
            transform: translateY(-5px) scale(1.1);
        }

        /* Concepts Section */
        .core-concepts-section {
            padding: 60px 0;
            background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
            position: relative;
            overflow: hidden;
        }

        .core-concepts-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('assets/concept-pattern.png') center/cover no-repeat;
            opacity: 0.03;
            z-index: 0;
        }

        .concept-card {
            background: white;
            border-radius: 12px;
            padding: 30px;
            height: 100%;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(67, 97, 238, 0.1);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .concept-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(67, 97, 238, 0.1);
            border-color: rgba(67, 97, 238, 0.2);
        }

        .concept-icon {
            width: 60px;
            height: 60px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary-color);
            font-size: 24px;
            transition: all 0.3s ease;
        }

        .concept-card:hover .concept-icon {
            background: var(--primary-color);
            color: white;
            transform: rotate(15deg) scale(1.1);
        }

        .concept-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark-color);
            position: relative;
            padding-bottom: 10px;
        }

        .concept-card h3:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--gradient-green);
            border-radius: 3px;
        }

        .concept-card p {
            color: var(--gray-color);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .concept-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-color);
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            position: absolute;
            bottom: 20px;
            right: 20px;
            transition: all 0.3s ease;
        }

        .concept-card:hover .concept-badge {
            background: var(--primary-color);
            color: white;
        }

        /* Modules Section */
        .modules-section {
            padding: 60px 0;
            background: #ffffff;
        }

        .module-container {
            margin-bottom: 60px;
        }

        .module-header {
            text-align: center;
            margin-bottom: 40px;
            padding: 30px;
            background: var(--primary-light);
            border-radius: 12px;
            border-left: 5px solid var(--primary-color);
        }

        .module-title {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        .module-description {
            font-size: 1.1rem;
            color: var(--gray-color);
            max-width: 800px;
            margin: 0 auto;
        }

        .module-content {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 40px;
        }

        .module-media {
            flex: 1;
            min-width: 300px;
        }

        .module-media iframe,
        .module-media video {
            width: 100%;
            height: 300px;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
        }

        .module-articles {
            flex: 1;
            min-width: 300px;
        }

        .article-card {
            background: white;
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 20px;
            box-shadow: var(--card-shadow);
            transition: all 0.3s ease;
        }

        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .article-title {
            font-size: 1.2rem;
            color: var(--primary-color);
            margin-bottom: 10px;
        }

        .module-gallery {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .gallery-item {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: all 0.3s ease;
        }

        .gallery-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        }

        .gallery-item img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        /* Accordion Styles */
        .module-accordion .accordion-item {
            border: none;
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 20px;
            box-shadow: var(--card-shadow);
        }

        .module-accordion .accordion-button {
            background-color: white;
            font-weight: 600;
            padding: 20px;
            color: var(--dark-color);
        }

        .module-accordion .accordion-button:not(.collapsed) {
            background-color: var(--primary-color);
            color: white;
        }

        .module-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .module-accordion .accordion-body {
            padding: 25px;
        }

        .submodule-content {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
        }

        .submodule-main {
            flex: 2;
            min-width: 300px;
        }

        .submodule-sidebar {
            flex: 1;
            min-width: 250px;
        }

        .submodule-item {
            background: white;
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 15px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .submodule-item:hover {
            background: var(--primary-light);
            transform: translateX(5px);
        }

        .submodule-item.active {
            background: var(--primary-color);
            color: white;
        }

        .submodule-media {
            margin-bottom: 20px;
        }

        .submodule-media iframe,
        .submodule-media video {
            width: 100%;
            height: 300px;
            border-radius: 8px;
        }

        .submodule-articles {
            margin-top: 20px;
        }

        .submodule-gallery {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }

        /* Responsive Adjustments */
        @media (max-width: 1199.98px) {
            .hero-title {
                font-size: 3rem;
            }

            .hero-subtitle {
                font-size: 1.1rem;
            }

            .icon-3d-item {
                width: 120px;
                height: 120px;
                min-width: 120px;
            }
        }

        @media (max-width: 991.98px) {
            .hero-title {
                font-size: 2.5rem;
            }

            .about-image {
                margin-bottom: 40px;
            }

            .icon-3d-container {
                gap: 30px;
            }

            .icon-3d-item {
                width: 110px;
                height: 110px;
                min-width: 110px;
            }

            .icon-3d-item i {
                font-size: 4rem;
            }
        }

        @media (max-width: 767.98px) {
            .hero-section {
                padding: 120px 0 60px;
            }

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

            .hero-subtitle {
                font-size: 1rem;
            }

            .icon-3d-container {
                gap: 25px;
            }

            .icon-3d-item {
                width: 100px;
                height: 100px;
                min-width: 100px;
            }

            .icon-3d-item i {
                font-size: 3.5rem;
            }
        }

        @media (max-width: 575.98px) {
            .hero-section {
                padding: 100px 0 40px;
            }

            .hero-title {
                font-size: 1.8rem;
            }

            .trust-badges {
                flex-direction: column;
                align-items: center;
            }

            .icon-3d-container {
                gap: 20px;
            }

            .icon-3d-item {
                width: 40px;
                height: 80px;
                min-width: 90px;
            }

            .icon-3d-item i {
                font-size: 2.5rem;
            }
        }

        /* Animation Classes */
        .animate-float {
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {
            0% {
                transform: translateY(0px);
            }

            50% {
                transform: translateY(-20px);
            }

            100% {
                transform: translateY(0px);
            }
        }

        .animate-rotate {
            animation: rotate 15s linear infinite;
        }

        @keyframes rotate {
            0% {
                transform: rotate(0deg);
            }

            100% {
                transform: rotate(360deg);
            }
        }

        .animate-pulse {
            animation: pulse 2s ease infinite;
        }

        @keyframes pulse {
            0% {
                transform: scale(1);
                box-shadow: 0 0 0 0 rgba(67, 97, 238, 0.4);
            }

            70% {
                transform: scale(1.05);
                box-shadow: 0 0 0 15px rgba(67, 97, 238, 0);
            }

            100% {
                transform: scale(1);
                box-shadow: 0 0 0 0 rgba(67, 97, 238, 0);
            }
        }