:root {
            --primary-color: #8a2be2;
            --secondary-color: #ff6b35;
            --accent-color: #00ced1;
            --text-dark: #2c3e50;
            --text-light: #7f8c8d;
            --bg-light: #f8f9fa;
            --gradient-primary: linear-gradient(135deg, #8a2be2, #4b0082);
            --gradient-secondary: linear-gradient(135deg, #ff6b35, #ff8e53);
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: #ffffff;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .hero-section {
            background: var(--gradient-primary);
            color: white;
            padding: 4rem 0;
            margin-bottom: 2rem;
            border-radius: 0 0 20px 20px;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 25px;
            font-weight: 700;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--secondary-color);
            border-radius: 2px;
        }
        .content-card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            padding: 25px;
            margin-bottom: 25px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-left: 4px solid var(--primary-color);
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .key-point {
            background: var(--bg-light);
            border-left: 4px solid var(--accent-color);
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-icon {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }
        .img-container {
            border-radius: 12px;
            overflow: hidden;
            margin: 25px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .img-container img {
            width: 100%;
            height: auto;
            transition: transform 0.5s ease;
        }
        .img-container:hover img {
            transform: scale(1.03);
        }
        .highlight {
            background: linear-gradient(120deg, rgba(138, 43, 226, 0.1) 0%, rgba(138, 43, 226, 0) 100%);
            padding: 20px;
            border-radius: 10px;
            margin: 20px 0;
        }
        .table-of-contents {
            background: var(--bg-light);
            border-radius: 12px;
            padding: 25px;
            margin-bottom: 30px;
        }
        .table-of-contents ul {
            list-style-type: none;
            padding-left: 0;
        }
        .table-of-contents li {
            margin-bottom: 10px;
            padding-left: 20px;
            position: relative;
        }
        .table-of-contents li:before {
            content: '▶';
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-size: 0.8rem;
        }
        .table-of-contents a {
            color: var(--text-dark);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .table-of-contents a:hover {
            color: var(--primary-color);
        }
        .character-card {
            text-align: center;
            padding: 20px;
            border-radius: 12px;
            background: white;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
            height: 100%;
        }
        .character-card:hover {
            transform: translateY(-10px);
        }
        .character-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }
        footer {
            background: var(--gradient-primary);
            color: white;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .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: 2rem 0;
                border-radius: 0 0 15px 15px;
            }
            .content-card {
                padding: 20px 15px;
            }
            .navbar-brand {
                font-size: 1.5rem;
            }
        }
        .keyword {
            font-weight: 700;
            color: var(--primary-color);
        }
        .quote {
            font-style: italic;
            border-left: 4px solid var(--secondary-color);
            padding-left: 20px;
            margin: 25px 0;
            color: var(--text-light);
        }