body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.hero {
    text-align: center;
    padding: 60px 20px;
}

.hero h1 {
    font-size: 2.8em;
    color: #2c3e50;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.hero p {
    font-size: 1.2em;
    color: #34495e;
    max-width: 800px;
    margin: 0 auto 30px;
}


.features {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin: 20px auto;
    max-width: 800px;
}

.feature-item {
    margin: 15px 0;
    padding-left: 30px;
    position: relative;
    opacity: 1;
    transform: translateY(0);
    transition: transform 0.3s;
}

.feature-item:hover {
    transform: translateX(10px);
}

.feature-item.animated {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
}


.cta-button {
    display: inline-block;
    background: linear-gradient(45deg, #3498db, #2980b9);
    color: white;
    padding: 15px 40px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    margin-top: 20px;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
    background: linear-gradient(45deg, #2980b9, #3498db);
}


.game-preview {
    margin: 40px auto;
    text-align: center;
    position: relative;
}

.game-preview img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}


.tube-container {
    display: inline-block;
    margin: 20px;
    perspective: 1000px;
}

.tube {
    width: 40px;
    height: 120px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 0 0 20px 20px;
    position: relative;
    transform-style: preserve-3d;
    animation: tubeFloat 3s ease-in-out infinite;
}

.water {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 70%;
    background: linear-gradient(45deg, #3498db, #2ecc71);
    border-radius: 0 0 20px 20px;
    animation: waterFlow 2s ease-in-out infinite;
}


@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes tubeFloat {
    0%, 100% { transform: translateY(0) rotateX(0); }
    50% { transform: translateY(-10px) rotateX(5deg); }
}

@keyframes waterFlow {
    0%, 100% { 
        height: 70%;
        background: linear-gradient(45deg, #3498db, #2ecc71);
    }
    50% { 
        height: 60%;
        background: linear-gradient(45deg, #2ecc71, #3498db);
    }
}


@media (max-width: 768px) {
    .hero h1 {
        font-size: 2em;
    }
    
    .features {
        padding: 20px;
    }
    
    .tube {
        width: 30px;
        height: 90px;
    }
}