:root {
    --primary-color: #2ecc71;
    --secondary-color: #3498db;
    --background-color: #f4f4f4;
    --text-color: #333;
}

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background-color: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--primary-color);
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 5%;
}

#hero {
    text-align: center;
    padding: 4rem 0;
}

#hero h1 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 2rem;
}

.btn {
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.btn.primary {
    background-color: var(--primary-color);
    color: white;
}

.btn.secondary {
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
}

#features {
    text-align: center;
    padding: 4rem 0;
}

.feature-grid {
    display: flex;
    justify-content: space-around;
    margin-top: 2rem;
}

.feature {
    max-width: 300px;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.feature .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

#technology {
    background-color: white;
    padding: 4rem 5%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.tech-details {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.tech-info ul {
    list-style-type: none;
}

.tech-info li {
    margin: 10px 0;
    position: relative;
    padding-left: 20px;
}

.tech-info li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

#download {
    text-align: center;
    padding: 4rem 0;
}

.download-platforms {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 2rem;
}

.platform img {
    max-width: 200px;
}

.platform.web {
    background-color: var(--secondary-color);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    display: inline-block;
}

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

.social-links a {
    color: white;
    margin: 0 10px;
    text-decoration: none;
}

@media (max-width: 768px) {
    .feature-grid {
        flex-direction: column;
        gap: 20px;
    }

    .tech-details {
        flex-direction: column;
    }

    .download-platforms {
        flex-direction: column;
        align-items: center;
    }
}