:root {
            --primary-color: #8a2be2;
            --secondary-color: #ff6b35;
            --accent-color: #00d4aa;
            --dark-color: #1a0933;
            --light-color: #f8f9fa;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            background: linear-gradient(135deg, #1a0933 0%, #2d1b4e 100%);
            color: #ffffff;
            line-height: 1.7;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 9, 51, 0.8), rgba(45, 27, 78, 0.9)), url('https://via.placeholder.com/1200x600') center/cover no-repeat;
            padding: 100px 0;
            text-align: center;
            margin-bottom: 40px;
        }
        .content-section {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 30px;
            margin-bottom: 30px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        }
        h1, h2, h3 {
            color: var(--accent-color);
            margin-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            border-left: 5px solid var(--primary-color);
            padding-left: 15px;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary-color);
        }
        .keyword-highlight {
            background: linear-gradient(120deg, transparent 0%, rgba(138, 43, 226, 0.2) 100%);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .feature-icon {
            font-size: 2rem;
            color: var(--secondary-color);
            margin-right: 15px;
        }
        .img-container {
            border-radius: 10px;
            overflow: hidden;
            margin: 25px 0;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }
        .img-container img {
            width: 100%;
            height: auto;
            transition: transform 0.5s ease;
        }
        .img-container:hover img {
            transform: scale(1.03);
        }
        .nav-pills .nav-link {
            color: #ffffff;
            border-radius: 50px;
            margin: 5px;
            transition: all 0.3s ease;
        }
        .nav-pills .nav-link:hover, .nav-pills .nav-link.active {
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            color: white;
        }
        footer {
            background: rgba(10, 5, 25, 0.9);
            padding: 40px 0 20px;
            margin-top: 50px;
            border-top: 3px solid var(--primary-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-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, 0.3);
            z-index: 1000;
            transition: all 0.3s ease;
        }
        .back-to-top:hover {
            transform: translateY(-5px);
            color: white;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 60px 0;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
        }