:root {
            --primary-color: #ff6b35;
            --secondary-color: #4ecdc4;
            --accent-color: #ffd166;
            --dark-color: #1a535c;
            --light-color: #f7fff7;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
        }
        .logo-text {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        .nav-custom {
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 83, 92, 0.8), rgba(255, 107, 53, 0.8)), url('https://via.placeholder.com/1600x900') center/cover no-repeat;
            color: white;
            padding: 100px 0;
            text-align: center;
            margin-bottom: 40px;
        }
        .content-section {
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            padding: 40px;
            margin-bottom: 30px;
            transition: transform 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
        }
        h1, h2, h3 {
            color: var(--dark-color);
            margin-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
        }
        h2 {
            border-left: 5px solid var(--primary-color);
            padding-left: 15px;
            margin-top: 2.5rem;
        }
        h3 {
            color: var(--primary-color);
            margin-top: 2rem;
        }
        .highlight {
            background-color: rgba(255, 214, 102, 0.3);
            padding: 15px;
            border-radius: 8px;
            margin: 20px 0;
            border-left: 4px solid var(--accent-color);
        }
        .feature-icon {
            font-size: 2rem;
            color: var(--primary-color);
            margin-right: 15px;
        }
        .img-container {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            margin: 25px 0;
        }
        .img-container img {
            transition: transform 0.5s ease;
        }
        .img-container:hover img {
            transform: scale(1.03);
        }
        .table-custom {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .table-custom thead {
            background-color: var(--dark-color);
            color: white;
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: 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);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top:hover {
            background: var(--secondary-color);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 60px 0;
            }
            h1 {
                font-size: 2.2rem;
            }
            .content-section {
                padding: 25px;
            }
        }