* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

header {
    background-color: #4CAF50;
    color: white;
    padding: 1rem 0;
}

.logo {
    text-align: center;
    margin-bottom: 1rem;
}

.logo h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.logo p {
    font-size: 1.2rem;
    opacity: 0.9;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

nav a:hover {
    color: #f0f0f0;
}

.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=children%20learning%20english%20in%20classroom&image_size=landscape_16_9');
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 6rem 0;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    background-color: #4CAF50;
    color: white;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #45a049;
}

.features {
    padding: 4rem 0;
    background-color: #f9f9f9;
}

.features h3 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-item {
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.feature-item h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #4CAF50;
}

.software-preview {
    padding: 4rem 0;
}

.software-preview h3 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.software-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #f9f9f9;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.software-info {
    flex: 1;
    margin-right: 2rem;
}

.software-info h4 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #4CAF50;
}

.software-info p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.software-icon img {
    width: 200px;
    height: 200px;
}

footer {
    background-color: #333;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer-info {
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #4CAF50;
}

@media (max-width: 768px) {
    .software-card {
        flex-direction: column;
        text-align: center;
    }
    
    .software-info {
        margin-right: 0;
        margin-bottom: 2rem;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
}