:root {
            --primary-bg: #0a0e27;
            --secondary-bg: #141829;
            --accent-color: #00d9ff;
            --danger-color: #ff4444;
            --warning-color: #ffaa00;
            --success-color: #4ade80;
            --text-primary: #ffffff;
            --text-secondary: #8892b0;
            --card-bg: #1a1f3a;
            --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
             --primary-dark: #0a0e1a;
            --secondary-dark: #151923;
            --cyan-accent: #00d9ff;
            --green-accent: #00ff88;
            --red-accent: #ff4466;
            --yellow-accent: #ffbb00;
            --white-text: #ffffff;
            --gray-text: #8892b0;
            --border-line: #1e2433;
            --hover-dark: #1a1f2e;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
 /* Animated Background */
        .bg-animation {
            position: fixed;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            z-index: -1;
            overflow: hidden;
        }

        .bg-circle {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.15;
            animation: float 20s infinite;
        }

        .bg-circle:nth-child(1) {
            width: 500px;
            height: 500px;
            background: var(--accent-color);
            top: -200px;
            left: -200px;
            animation-delay: 0s;
        }

        .bg-circle:nth-child(2) {
            width: 400px;
            height: 400px;
            background: var(--danger-color);
            top: 50%;
            right: -150px;
            animation-delay: 5s;
        }

        .bg-circle:nth-child(3) {
            width: 600px;
            height: 600px;
            background: #764ba2;
            bottom: -250px;
            left: 50%;
            animation-delay: 10s;
        }

        @keyframes float {
            0%, 100% { transform: translate(0, 0) scale(1); }
            33% { transform: translate(50px, -50px) scale(1.1); }
            66% { transform: translate(-50px, 50px) scale(0.9); }
        }

        .page-wrapper {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
        }

 .logo {
            font-size: 28px;
            font-weight: bold;
            background: var(--gradient-3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

.main-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Top Navigation Bar */
        .top-navigation {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-line);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            font-size: 16px;
        }

        .brand-icon {
            width: 24px;
            height: 24px;
            background: var(--cyan-accent);
            border-radius: 4px;
        }

        .main-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .main-menu a {
            color: var(--gray-text);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .main-menu a:hover,
        .main-menu a.current {
            color: var(--white-text);
        }

        .top-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .lang-selector {
            padding: 6px 12px;
            background: var(--secondary-dark);
            border: 1px solid var(--border-line);
            border-radius: 6px;
            color: var(--white-text);
            font-size: 13px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .lang-selector:hover {
            border-color: var(--cyan-accent);
        }

        .theme-switcher {
            width: 40px;
            height: 40px;
            background: var(--secondary-dark);
            border: 1px solid var(--border-line);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            font-size: 18px;
        }

        .theme-switcher:hover {
            border-color: var(--cyan-accent);
            background: var(--hover-dark);
        }

        /* Hero Header */
        .hero-header {
            text-align: center;
            padding: 60px 0 80px;
        }

        .hero-header h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .hero-subtitle {
            color: var(--gray-text);
            font-size: 1rem;
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* Statistics Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-bottom: 80px;
        }

        .stat-box {
            background: var(--secondary-dark);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            padding: 40px 30px;
            text-align: center;
            transition: all 0.3s;
            cursor: pointer;
        }

        .stat-box:hover {
            border-color: var(--cyan-accent);
            transform: translateY(-5px);
            box-shadow: 0 10px 40px rgba(0, 217, 255, 0.1);
        }

        .stat-icon {
            font-size: 32px;
            margin-bottom: 20px;
            opacity: 0.8;
        }

        .stat-number {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1;
        }

        .stat-box:nth-child(1) .stat-number {
            color: var(--red-accent);
        }

        .stat-box:nth-child(2) .stat-number {
            color: var(--red-accent);
        }

        .stat-box:nth-child(3) .stat-number {
            color: var(--cyan-accent);
        }

        .stat-box:nth-child(4) .stat-number {
            color: var(--red-accent);
        }

        .stat-box:nth-child(5) .stat-number {
            color: var(--red-accent);
        }

        .stat-box:nth-child(6) .stat-number {
            color: var(--yellow-accent);
        }

        .stat-label {
            color: var(--gray-text);
            font-size: 0.95rem;
        }

        /* Section Headers */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            font-weight: 700;
        }

        .section-description {
            color: var(--gray-text);
            font-size: 1rem;
        }

        /* Impact Chart Section */
        .impact-section {
            margin-bottom: 100px;
        }

        .impact-chart {
            background: var(--secondary-dark);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            padding: 40px;
        }

        .chart-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 25px;
            padding-bottom: 25px;
            border-bottom: 1px solid var(--border-line);
        }

        .chart-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .chart-left {
            flex: 1;
        }

        .chart-label {
            font-size: 0.95rem;
            margin-bottom: 10px;
            color: var(--gray-text);
        }

        .chart-bar {
            height: 8px;
            background: var(--border-line);
            border-radius: 4px;
            overflow: hidden;
            max-width: 400px;
        }

        .chart-fill {
            height: 100%;
            background: var(--red-accent);
            border-radius: 4px;
            transition: width 1s ease;
        }

        .chart-right {
            display: flex;
            align-items: center;
            gap: 20px;
            min-width: 150px;
            justify-content: flex-end;
        }

        .chart-amount {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--red-accent);
        }

        .chart-percentage {
            font-size: 0.9rem;
            color: var(--gray-text);
        }

        /* Age Groups Section */
        .age-groups-section {
            margin-bottom: 100px;
        }

        .age-groups-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .age-group-card {
            background: var(--secondary-dark);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            padding: 35px 30px;
            transition: all 0.3s;
        }

        .age-group-card:hover {
            border-color: var(--cyan-accent);
            transform: translateY(-5px);
            box-shadow: 0 10px 40px rgba(0, 217, 255, 0.1);
        }

        .age-group-title {
            font-size: 1.8rem;
            margin-bottom: 25px;
            font-weight: 700;
        }

        .age-stat-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .age-stat-row:last-child {
            margin-bottom: 0;
        }

        .age-stat-label {
            color: var(--gray-text);
            font-size: 0.9rem;
        }

        .age-stat-value {
            font-size: 1.1rem;
            font-weight: 600;
        }

        .age-group-card:nth-child(odd) .age-stat-value {
            color: var(--cyan-accent);
        }

        .age-group-card:nth-child(even) .age-stat-value {
            color: var(--green-accent);
        }

        /* Key Insights Section */
        .insights-section {
            margin-bottom: 100px;
        }

        .insights-container {
            background: var(--secondary-dark);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            padding: 50px;
        }

        .insights-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
            gap: 40px;
        }

        .insight-item {
            display: flex;
            gap: 20px;
        }

        .insight-icon {
            width: 45px;
            height: 45px;
            background: rgba(0, 217, 255, 0.1);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }

        .insight-content p {
            color: var(--gray-text);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* Data Source */
        .data-source {
            text-align: center;
            color: var(--gray-text);
            font-size: 0.85rem;
            margin-bottom: 80px;
        }

        /* Footer Section */
        .main-footer {
            border-top: 1px solid var(--border-line);
            padding: 60px 0 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 60px;
            margin-bottom: 60px;
        }

        .footer-brand-section {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            font-size: 16px;
        }

        .footer-brand-icon {
            width: 28px;
            height: 28px;
            background: var(--cyan-accent);
            border-radius: 6px;
        }

        .footer-text {
            color: var(--gray-text);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .footer-column h4 {
            font-size: 0.95rem;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .footer-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-list a {
            color: var(--gray-text);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s;
        }

        .footer-list a:hover {
            color: var(--cyan-accent);
        }

        .settings-group {
            margin-top: 20px;
        }

        .setting-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .setting-text {
            color: var(--gray-text);
            font-size: 0.9rem;
        }

        .switch-toggle {
            position: relative;
            width: 48px;
            height: 24px;
            background: var(--border-line);
            border-radius: 12px;
            cursor: pointer;
            transition: background 0.3s;
        }

        .switch-toggle.enabled {
            background: var(--cyan-accent);
        }

        .switch-toggle::after {
            content: '';
            position: absolute;
            top: 2px;
            left: 2px;
            width: 20px;
            height: 20px;
            background: var(--white-text);
            border-radius: 50%;
            transition: transform 0.3s;
        }

        .switch-toggle.enabled::after {
            transform: translateX(24px);
        }

        .social-icons {
            display: flex;
            gap: 12px;
            margin-top: 20px;
        }

        .social-button {
            width: 36px;
            height: 36px;
            background: var(--secondary-dark);
            border: 1px solid var(--border-line);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            font-size: 16px;
        }

        .social-button:hover {
            border-color: var(--cyan-accent);
            background: var(--hover-dark);
        }

       /* Footer */
        footer {
            padding: 80px 0 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 100px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-section h3 {
            background: var(--gradient-3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 25px;
            font-size: 1.2rem;
            font-weight: 600;
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section ul li {
            margin-bottom: 12px;
        }

        .footer-section ul li a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: all 0.3s;
            display: inline-block;
        }

        .footer-section ul li a:hover {
            color: var(--accent-color);
            transform: translateX(5px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* Responsive Design */
        @media (max-width: 1200px) {
            .insights-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-menu {
                display: none;
            }

            .hero-header h1 {
                font-size: 2.5rem;
            }

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

            .age-groups-grid {
                grid-template-columns: 1fr;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 20px;
                text-align: center;
            }

            .section-header h2 {
                font-size: 2rem;
            }

            .chart-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }

            .chart-right {
                width: 100%;
                justify-content: space-between;
            }

            .insights-container {
                padding: 30px 25px;
            }
        }

        @media (max-width: 480px) {
            .hero-header h1 {
                font-size: 2rem;
            }

            .stat-number {
                font-size: 2.5rem;
            }

            .impact-chart {
                padding: 25px 20px;
            }
        }