:root {
            --primary-color: #4a148c;
            --secondary-color: #ff6f00;
            --accent-color: #00b0ff;
            --dark-bg: #1a1a2e;
            --light-text: #ffffff;
            --gradient-bg: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: var(--gradient-bg);
            color: var(--light-text);
            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);
        }
        .nav-link {
            color: var(--light-text) !important;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
            transform: translateY(-2px);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: 0;
            left: 0;
            background-color: var(--secondary-color);
            transition: width 0.3s ease;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .hero-section {
            background: url('https://via.placeholder.com/1600x900') no-repeat center center;
            background-size: cover;
            padding: 120px 0;
            position: relative;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(26, 26, 46, 0.7);
        }
        .hero-content {
            position: relative;
            z-index: 1;
        }
        h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            background: linear-gradient(45deg, var(--light-text), var(--accent-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin: 2.5rem 0 1.5rem;
            color: var(--secondary-color);
            border-left: 5px solid var(--accent-color);
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            font-weight: 600;
            margin: 2rem 0 1rem;
            color: var(--accent-color);
        }
        .content-section {
            padding: 60px 0;
        }
        .content-card {
            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-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        }
        .game-image {
            border-radius: 10px;
            overflow: hidden;
            margin: 25px 0;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease;
        }
        .game-image:hover {
            transform: scale(1.02);
        }
        .highlight {
            color: var(--secondary-color);
            font-weight: 600;
        }
        .feature-list {
            list-style-type: none;
            padding-left: 0;
        }
        .feature-list li {
            padding: 10px 0;
            padding-left: 30px;
            position: relative;
        }
        .feature-list li::before {
            content: '?';
            position: absolute;
            left: 0;
        }
        .strategy-tip {
            background: rgba(255, 111, 0, 0.1);
            border-left: 4px solid var(--secondary-color);
            padding: 20px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .footer {
            background: rgba(0, 0, 0, 0.3);
            padding: 40px 0;
            margin-top: 60px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .hero-section {
                padding: 80px 0;
            }
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--secondary-color);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
            z-index: 1000;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .back-to-top:hover {
            background: var(--accent-color);
            transform: translateY(-3px);
            color: white;
        }
        .table-of-contents {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 10px;
            padding: 25px;
            margin-bottom: 30px;
            border-left: 4px solid var(--accent-color);
        }
        .toc-list {
            list-style-type: none;
            padding-left: 0;
        }
        .toc-list li {
            margin-bottom: 10px;
            padding-left: 20px;
            position: relative;
        }
        .toc-list li::before {
            content: '►';
            position: absolute;
            left: 0;
            color: var(--secondary-color);
            font-size: 0.8rem;
        }
        .toc-list a {
            color: var(--light-text);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .toc-list a:hover {
            color: var(--accent-color);
        }