@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500&display=swap');
        :root {
            --primary-blue: #1a73e8;
            --secondary-blue: #4285f4;
            --accent-blue: #0d47a1;
            --light-blue: #e8f0fe;
            --primary-gray: #f8f9fa;
            --secondary-gray: #e9ecef;
            --text-primary: #202124;
            --text-secondary: #5f6368;
            --text-light: #ffffff;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --hover-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }
        
        * {
            font-family: 'Inter', sans-serif;
        }
        
        h1, h2, h3, h4, h5, h6 {
            font-family: 'Roboto', sans-serif;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            background-color: var(--primary-gray);
            color: var(--text-primary);
            overflow-x: hidden;
        }
        
        .glassmorphism {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        
        .floating-nav {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            border-radius: 50px;
            padding: 8px 20px;
            width: 90%;
            max-width: 1200px;
            box-shadow: var(--card-shadow);
        }
        
        .section-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            background-size: cover;
            background-position: center;
            filter: blur(5px);
            transform: scale(1.05);
        }
        
        .section-padding {
            padding: 80px 0;
            position: relative;
        }
        
        .tab-button {
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        
        .tab-button::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary-blue);
            transition: width 0.3s ease;
        }
        
        .tab-button.active::before {
            width: 100%;
        }
        
        .tab-button.active {
            color: var(--primary-blue);
            font-weight: 600;
        }
        
        .achievement-card {
            background: white;
            border-radius: 16px;
            padding: 24px;
            height: 100%;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }
        
        .achievement-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary-blue);
        }
        
        .achievement-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--hover-shadow);
        }
        
        .timeline-item {
            position: relative;
            padding-left: 40px;
            padding-bottom: 30px;
        }
        
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 5px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary-blue);
            z-index: 1;
        }
        
        .timeline-item::after {
            content: '';
            position: absolute;
            left: 7px;
            top: 25px;
            width: 2px;
            height: calc(100% - 20px);
            background: rgba(26, 115, 232, 0.3);
        }
        
        .timeline-item:last-child::after {
            display: none;
        }
        
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }
        
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .animated-text {
            animation: fadeInUp 1.5s ease forwards;
        }
        
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .floating {
            animation: floating 3s ease-in-out infinite;
        }
        
        @keyframes floating {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-10px); }
            100% { transform: translateY(0px); }
        }
        
        .gradient-text {
            background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .gradient-border {
            position: relative;
            background: white;
            border-radius: 16px;
        }
        
        .gradient-border::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            border-radius: 16px;
            padding: 1px;
            background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            z-index: -1;
        }
        
        .category-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 24px;
        }
        
        .category-icon.iei {
            background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
            color: white;
        }
        
        .category-icon.sdg {
            background: linear-gradient(135deg, #34a853, #1a73e8);
            color: white;
        }
        
        .category-icon.academic {
            background: linear-gradient(135deg, #fbbc04, #ea4335);
            color: white;
        }
        
        .category-icon.awards {
            background: linear-gradient(135deg, #ea4335, #34a853);
            color: white;
        }
        
        .category-icon.manifesto {
            background: linear-gradient(135deg, var(--primary-blue), #34a853);
            color: white;
        }
        
        .category-icon.charity {
            background: linear-gradient(135deg, #fbbc04, var(--primary-blue));
            color: white;
        }
        
        .category-icon.qualification {
            background: linear-gradient(135deg, #ea4335, var(--secondary-blue));
            color: white;
        }
        
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        
        .accordion-content.active {
            max-height: 1000px;
        }
        
        .accordion-header {
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .accordion-header:hover {
            background: rgba(26, 115, 232, 0.1);
        }
        
        .accordion-icon {
            transition: transform 0.3s ease;
        }
        
        .accordion-icon.active {
            transform: rotate(180deg);
        }
        
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        
        .tech-card {
            background: white;
            border-radius: 16px;
            padding: 24px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }
        
        .tech-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(26, 115, 232, 0.05), rgba(66, 133, 244, 0.05));
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .tech-card:hover::before {
            opacity: 1;
        }
        
        .tech-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--hover-shadow);
        }
        
        .tech-card-content {
            position: relative;
            z-index: 1;
        }
        
        .tech-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-right: 8px;
            margin-bottom: 8px;
        }
        
        .tech-badge.blue {
            background: rgba(26, 115, 232, 0.1);
            color: var(--primary-blue);
        }
        
        .tech-badge.green {
            background: rgba(52, 168, 83, 0.1);
            color: #34a853;
        }
        
        .tech-badge.yellow {
            background: rgba(251, 188, 4, 0.1);
            color: #fbbc04;
        }
        
        .tech-badge.red {
            background: rgba(234, 67, 53, 0.1);
            color: #ea4335;
        }
        
        .pulse {
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.7);
            }
            70% {
                box-shadow: 0 0 0 10px rgba(26, 115, 232, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(26, 115, 232, 0);
            }
        }
        
        .tech-stats {
            display: flex;
            justify-content: space-between;
            margin-top: 16px;
        }
        
        .tech-stat {
            text-align: center;
        }
        
        .tech-stat-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-blue);
        }
        
        .tech-stat-label {
            font-size: 12px;
            color: var(--text-secondary);
        }
        
        .section-indicator {
            position: fixed;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 100;
        }
        
        .indicator-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(26, 115, 232, 0.3);
            margin: 12px 0;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .indicator-dot.active {
            background: var(--primary-blue);
            transform: scale(1.5);
        }
        
        .btn-primary {
            background: var(--primary-blue);
            color: white;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: 8px;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        
        .btn-primary:hover {
            background: var(--secondary-blue);
            transform: translateY(-2px);
            box-shadow: var(--hover-shadow);
        }
        
        .btn-large {
            padding: 16px 32px;
            font-size: 18px;
            border-radius: 50px;
        }
        
        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }
            
            .tech-grid {
                grid-template-columns: 1fr;
            }
            
            .floating-nav {
                width: 95%;
                padding: 6px 16px;
            }
            
            .section-indicator {
                display: none;
            }
        }
        /* Book Slider Styles */

        .book-slider {
            position: relative;
            width: 340px;
            height: 64px;
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-radius: 50px;
            border: 1px solid rgba(200, 200, 200, 0.4);
            box-shadow: inset 0 1px 0 rgba(255,255,255,0.5),
                        0 4px 10px rgba(0,0,0,0.08);
            display: flex;
            align-items: center;
            padding-left: 20px;
            cursor: pointer;
            overflow: hidden;
            user-select: none;
        }

        .book-icon {
            font-size: 26px;
            margin-right: 12px;
            filter: drop-shadow(0 1px 1px rgba(0,0,0,0.1));
        }

        .slider-text {
            flex: 1;
            color: rgb(57, 57, 57);
            font-size: 17px;
            letter-spacing: 0.2px;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .book-slider.active .slider-text {
            color: rgba(0,0,0,0.25);
        }

        .slider-handle {
            position: absolute;
            left: 4px;
            top: 4px;
            height: 56px;
            width: 56px;
            background: linear-gradient(145deg, #ca1b1b, #e0dcdc);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 22px;
            font-weight: bold;
            box-shadow: 0 4px 12px rgba(78, 91, 134, 0.155);
            transition: left 0.2s ease-out, box-shadow 0.3s ease;
        }

        .slider-handle .arrow {
            animation: arrowMove 1s infinite linear;
        }

        @keyframes arrowMove {
            0% { transform: translateX(0); opacity: 1; }
            50% { transform: translateX(5px); opacity: 0.6; }
            100% { transform: translateX(0); opacity: 1; }
        }

        .success {
            background: linear-gradient(145deg, #34c759, #78e08f);
            box-shadow: 0 4px 12px rgba(52,199,89,0.4);

        }
        .slider-handle {
            transition: left 0.3s ease-out, box-shadow 0.3s ease;
        }

        /* Tagline styles */
        .tagline {
            font-size: 1.00rem;
            color: #3c3c3cf2;
            font-weight: 500;
            margin-bottom: 1rem;
            line-height: 1.4;
        }

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio (315/560 * 100) */
    height: 0;
    overflow: hidden;
    max-width: 100%;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}