:root {
            --primary-color: #FF6B35;
            --secondary-color: #004E89;
            --accent-color: #FFD166;
            --text-dark: #2D3142;
            --text-light: #FFFFFF;
            --bg-light: #F8F9FA;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }
        .main-container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 15px 50px rgba(0,0,0,0.1);
            margin-top: 20px;
            margin-bottom: 20px;
            overflow: hidden;
        }
        .logo-text {
            font-family: 'Arial Black', Gadget, sans-serif;
            font-size: 2.2rem;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        .nav-custom {
            background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
            padding: 15px 0;
        }
        .nav-link {
            color: var(--text-light) !important;
            font-weight: 600;
            margin: 0 10px;
            transition: all 0.3s ease;
            border-radius: 25px;
            padding: 8px 20px !important;
        }
        .nav-link:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(0,78,137,0.8), rgba(255,107,53,0.8)), url('https://via.placeholder.com/1600x900') center/cover;
            color: white;
            padding: 80px 0;
            text-align: center;
        }
        .section-title {
            color: var(--secondary-color);
            border-left: 5px solid var(--primary-color);
            padding-left: 15px;
            margin: 40px 0 25px;
            font-weight: 700;
        }
        .content-section {
            padding: 40px;
        }
        .highlight-box {
            background: linear-gradient(135deg, var(--accent-color), #FFB347);
            border-radius: 15px;
            padding: 25px;
            margin: 25px 0;
            border-left: 5px solid var(--primary-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }
        .game-image {
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            transition: transform 0.3s ease;
            margin: 20px 0;
        }
        .game-image:hover {
            transform: scale(1.02);
        }
        .key-point {
            background: var(--bg-light);
            border-radius: 10px;
            padding: 20px;
            margin: 15px 0;
            border-left: 4px solid var(--secondary-color);
        }
        .strategy-card {
            background: white;
            border-radius: 15px;
            padding: 25px;
            margin: 20px 0;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            border-top: 5px solid var(--primary-color);
        }
        .strategy-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.15);
        }
        footer {
            background: linear-gradient(90deg, var(--secondary-color), #003366);
            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;
            font-size: 1.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top:hover {
            transform: translateY(-5px);
            background: var(--secondary-color);
            color: white;
        }
        @media (max-width: 768px) {
            .logo-text {
                font-size: 1.5rem;
            }
            .content-section {
                padding: 20px;
            }
            .hero-section {
                padding: 50px 0;
            }
        }