:root {
            --primary-color: #ff6b35;
            --secondary-color: #004e89;
            --accent-color: #ffd166;
            --text-dark: #2d3142;
            --text-light: #f7f7f7;
            --background-light: #fff8f0;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--background-light);
        }
        .logo-text {
            font-family: 'Georgia', serif;
            font-weight: bold;
            color: var(--primary-color);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
            font-size: 1.8rem;
        }
        .nav-custom {
            background: linear-gradient(135deg, var(--secondary-color), #1a659e);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .nav-link {
            color: white !important;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 15px !important;
            border-radius: 4px;
        }
        .nav-link:hover {
            background-color: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(0,78,137,0.8), rgba(0,78,137,0.9)), url('https://via.placeholder.com/1600x900') center/cover no-repeat;
            color: white;
            padding: 100px 0;
            text-align: center;
        }
        .section-title {
            color: var(--secondary-color);
            border-left: 5px solid var(--primary-color);
            padding-left: 15px;
            margin: 40px 0 25px;
        }
        .content-card {
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            padding: 25px;
            margin-bottom: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-top: 4px solid var(--primary-color);
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
        }
        .highlight-text {
            background-color: rgba(255,107,53,0.1);
            border-left: 4px solid var(--primary-color);
            padding: 15px 20px;
            margin: 20px 0;
            font-style: italic;
        }
        .feature-icon {
            color: var(--primary-color);
            font-size: 1.5rem;
            margin-right: 10px;
        }
        .img-container {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            margin: 25px 0;
        }
        .img-caption {
            background-color: rgba(0,0,0,0.7);
            color: white;
            padding: 10px;
            font-size: 0.9rem;
            text-align: center;
        }
        .key-point {
            display: flex;
            align-items: flex-start;
            margin-bottom: 15px;
        }
        .key-point i {
            color: var(--primary-color);
            margin-right: 10px;
            margin-top: 5px;
        }
        footer {
            background-color: var(--secondary-color);
            color: white;
            padding: 40px 0 20px;
        }
        .footer-heading {
            color: var(--accent-color);
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.2);
            padding-top: 20px;
            margin-top: 30px;
            text-align: center;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 60px 0;
            }
            .logo-text {
                font-size: 1.4rem;
            }
            .content-card {
                padding: 20px 15px;
            }
        }
        .back-to-top {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background-color: var(--primary-color);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            z-index: 1000;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .back-to-top.show {
            opacity: 1;
        }
        .back-to-top:hover {
            background-color: var(--secondary-color);
            color: white;
        }