body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

header p {
    margin: 0.5rem 0 0;
    font-size: 1.1rem;
    color: #bbb;
}

main {
    flex: 1;
    padding: 20px;
    max-width: 1200px;
    margin: 20px auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.hero {
    text-align: center;
    padding: 40px 20px;
    background-color: #e9ecef;
    border-radius: 8px;
    margin-bottom: 30px;
}

.hero img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.hero h2 {
    color: #007bff;
    font-size: 2rem;
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: 25px;
    color: #555;
}

.button {
    display: inline-block;
    background-color: #007bff;
    color: #fff;
    padding: 12px 25px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease;
    margin: 5px;
}

.button:hover {
    background-color: #0056b3;
}

.features, .documentation {
    margin-bottom: 30px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fdfdfd;
}

.features h3, .documentation h3 {
    color: #28a745;
    font-size: 1.8rem;
    margin-bottom: 15px;
    border-bottom: 2px solid #28a745;
    padding-bottom: 10px;
}

.features ul {
    list-style: none;
    padding: 0;
}

.features li {
    background: #e2f0d9;
    margin-bottom: 10px;
    padding: 10px 15px;
    border-left: 5px solid #28a745;
    border-radius: 4px;
}

.documentation p {
    margin-bottom: 20px;
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 1.5rem 0;
    margin-top: auto;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.2);
}

footer p {
    margin: 0;
    font-size: 0.9rem;
    color: #bbb;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .button {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    main {
        margin: 10px;
        padding: 15px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8rem;
    }

    .hero h2 {
        font-size: 1.3rem;
    }

    .button {
        display: block;
        margin: 10px auto;
        width: 80%;
    }
}