:root {
            --primary-blue: #1a73e8;
            --ocean-deep: #0066cc;
            --coral-accent: #ff6b6b;
            --sea-green: #00b894;
            --sand-beige: #fdcb6e;
            --text-dark: #2d3436;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--ocean-deep) !important;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 115, 232, 0.8), rgba(0, 102, 204, 0.9)), url('https://via.placeholder.com/1200x600') center/cover;
            color: white;
            padding: 100px 0;
            text-align: center;
            margin-bottom: 40px;
        }
        .content-section {
            background: white;
            border-radius: 15px;
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            transition: transform 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
        }
        h1, h2, h3 {
            color: var(--ocean-deep);
            margin-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 800;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }
        h2 {
            font-size: 2rem;
            border-left: 5px solid var(--coral-accent);
            padding-left: 15px;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--sea-green);
            margin-top: 2rem;
        }
        .key-point {
            background: linear-gradient(135deg, #e3f2fd, #f0f7ff);
            border-left: 4px solid var(--primary-blue);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 10px 10px 0;
        }
        .game-feature {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 25px;
            margin: 20px 0;
            border: 1px solid #e9ecef;
            transition: all 0.3s ease;
        }
        .game-feature:hover {
            background: white;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--sea-green);
            margin-bottom: 15px;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 25px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .nav-link {
            color: var(--text-dark) !important;
            font-weight: 500;
            transition: color 0.3s ease;
        }
        .nav-link:hover {
            color: var(--primary-blue) !important;
        }
        .table-of-contents {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 25px;
            margin-bottom: 30px;
        }
        footer {
            background: var(--text-dark);
            color: white;
            padding: 40px 0;
            margin-top: 50px;
        }
        .highlight {
            background-color: #fff9c4;
            padding: 2px 5px;
            border-radius: 3px;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 60px 0;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .content-section {
                padding: 25px;
            }
        }
        .strategy-tip {
            background: linear-gradient(135deg, #e8f5e9, #f1f8e9);
            border: 1px solid #c8e6c9;
            border-radius: 10px;
            padding: 20px;
            margin: 20px 0;
        }
        .character-card {
            background: white;
            border-radius: 10px;
            padding: 20px;
            margin: 15px 0;
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
        }
        .character-card:hover {
            transform: scale(1.02);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }