/* ==================== ROOT VARIABLES ==================== */
        :root {
            --primary-dark: #0f472c;
            --primary-green: #15a34a;
            --accent-orange: #ea580c;
            --accent-red: #dc2626;
            --light-bg: #f0fdf4;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --white: #ffffff;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.08);
        }

        /* ==================== RESET & BASE STYLES ==================== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--text-dark);
            background-color: #fafaf9;
            line-height: 1.6;
        }

        a {
            color: var(--primary-green);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--accent-orange);
        }

        /* ==================== HEADER & NAVIGATION ==================== */
        header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-green) 100%);
            color: var(--white);
            padding: 0.5rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

        nav {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--white);
            transition: opacity 0.3s ease;
        }

        .nav-links a:hover {
            opacity: 0.8;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 0.4rem;
        }

        .hamburger span {
            width: 25px;
            height: 3px;
            background: var(--white);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        /* ==================== HERO SECTION ==================== */
        .hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #1e7c4a 100%);
            color: var(--white);
            padding: 6rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%23ffffff" fill-opacity="0.05"%3E%3Cpath d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
            opacity: 0.5;
            pointer-events: none;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
            animation: fadeInDown 0.8s ease;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1rem;
            font-weight: bold;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }

        .cta-button {
            display: inline-block;
            background: var(--accent-orange);
            color: var(--white);
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: bold;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }

        .cta-button:hover {
            background: #d94d06;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(234, 88, 12, 0.3);
        }

        /* ==================== MAIN CONTENT CONTAINER ==================== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* ==================== STATS SECTION ==================== */
        .stats {
            padding: 4rem 2rem;
            background: var(--light-bg);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .stat-card {
            background: var(--white);
            padding: 2rem;
            border-radius: 12px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            border-left: 4px solid var(--primary-green);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: bold;
            color: var(--accent-orange);
            margin-bottom: 0.5rem;
        }

        .stat-label {
            color: var(--text-light);
            font-size: 0.95rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        /* ==================== DATA VISUALIZATION SECTION ==================== */
        .data-section {
            padding: 4rem 2rem;
            background: var(--white);
        }

        .section-title {
            font-size: 2.5rem;
            color: var(--primary-dark);
            margin-bottom: 1rem;
            text-align: center;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-light);
            margin-bottom: 3rem;
            font-size: 1.1rem;
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .data-card {
            background: var(--light-bg);
            padding: 2rem;
            border-radius: 12px;
            border-top: 4px solid var(--primary-green);
            transition: all 0.3s ease;
        }

        .data-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .data-card h3 {
            color: var(--primary-dark);
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }

        .data-value {
            font-size: 2rem;
            color: var(--accent-orange);
            font-weight: bold;
            margin-bottom: 0.5rem;
        }

        .data-unit {
            color: var(--text-light);
            font-size: 0.9rem;
        }

        .chart-container {
            background: var(--white);
            padding: 2rem;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 2rem;
            overflow-x: auto;
        }

        .loading {
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 3rem;
            color: var(--text-light);
        }

        .spinner {
            border: 4px solid var(--light-bg);
            border-top: 4px solid var(--primary-green);
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 0.8s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .error-message {
            background: #fee2e2;
            color: var(--accent-red);
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            border-left: 4px solid var(--accent-red);
        }

        .success-message {
            background: #dcfce7;
            color: #15803d;
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            border-left: 4px solid var(--primary-green);
        }

        /* ==================== INFO SECTIONS ==================== */
        .info-section {
            padding: 4rem 2rem;
            background: linear-gradient(to bottom, #ffffff, var(--light-bg));
        }

        .info-section:nth-child(even) {
            background: var(--light-bg);
        }

        .info-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
            margin-top: 2rem;
        }

        .info-text h3 {
            font-size: 2rem;
            color: var(--primary-dark);
            margin-bottom: 1rem;
        }

        .info-text p {
            margin-bottom: 1rem;
            color: var(--text-light);
            line-height: 1.8;
        }

        .info-points {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1.5rem;
        }

        .point {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }

        .point-icon {
            color: var(--primary-green);
            font-weight: bold;
            font-size: 1.5rem;
            flex-shrink: 0;
        }

        .point-text {
            color: var(--text-light);
        }

        .info-visual {
            background: linear-gradient(135deg, var(--primary-green), var(--primary-dark));
            border-radius: 12px;
            padding: 3rem;
            color: var(--white);
            text-align: center;
            min-height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            font-size: 1.2rem;
        }

        /* ==================== INTERACTIVE SECTION ==================== */
        .interactive-section {
            padding: 4rem 2rem;
            background: var(--white);
        }

        .action-buttons {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .action-btn {
            background: var(--primary-green);
            color: var(--white);
            padding: 1.5rem;
            border-radius: 8px;
            border: 2px solid transparent;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: bold;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;
        }

        .action-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

        .action-btn.secondary {
            background: var(--accent-orange);
        }

        .action-btn.secondary:hover {
            background: #d94d06;
        }

        /* ==================== FOOTER ==================== */
        footer {
            background: var(--primary-dark);
            color: var(--white);
            padding: 3rem 2rem 1rem;
            margin-top: 2rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }

        .footer-section h4 {
            margin-bottom: 1rem;
            color: var(--primary-green);
        }

        .footer-section a {
            color: #d1d5db;
            transition: color 0.3s ease;
        }

        .footer-section a:hover {
            color: var(--primary-green);
        }

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

        .footer-section li {
            margin-bottom: 0.5rem;
        }

        .footer-bottom {
            border-top: 1px solid #374151;
            padding-top: 2rem;
            text-align: center;
            color: #9ca3af;
        }

        /* ==================== ANIMATIONS ==================== */
        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in {
            animation: fadeInUp 0.6s ease;
        }

        /* ==================== RESPONSIVE DESIGN ==================== */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                background: var(--primary-dark);
                padding: 1rem;
                gap: 0;
            }

            .nav-links.active {
                display: flex;
            }

            .nav-links li {
                padding: 1rem 0;
                border-bottom: 1px solid #1f472a;
            }

            .hamburger {
                display: flex;
            }

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

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

            .info-content {
                grid-template-columns: 1fr;
            }

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

            nav {
                padding: 1rem;
            }

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

            .action-buttons {
                grid-template-columns: 1fr;
            }

            .hero {
                padding: 3rem 1rem;
            }

            .data-section,
            .stats,
            .info-section,
            .interactive-section {
                padding: 2rem 1rem;
            }
        }

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

            .stat-number {
                font-size: 2rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .footer-content {
                grid-template-columns: 1fr;
            }
        }

        /* ==================== ACCESSIBILITY ==================== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

        /* High contrast mode support */
        @media (prefers-contrast: more) {
            :root {
                --text-light: #555;
            }
        }