:root {
    --primary-color: #0088CC;
    --secondary-color: #00BCD4;
    --text-color: #333;
    --bg-color: #f5f5f5;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

.header {
    background: white;
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.nav {
    display: flex;
    gap: 30px;
}

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

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

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: rgba(255,255,255,0.9);
}

.btn-large {
    padding: 16px 50px;
    font-size: 18px;
}

.features-preview {
    background: white;
    padding: 60px 20px;
}

.features-preview h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card p {
    color: #666;
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: white;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 30px;
}

.download-section {
    background: white;
    padding: 60px 20px;
}

.download-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.card {
    background: white;
    border: 1px solid #e0e0e0;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.card h3 {
    color: var(--primary-color);
    margin: 15px 0;
}

.content {
    background: white;
    padding: 60px 20px;
}

.feature {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    text-align: center;
}

.feature h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature p {
    color: #666;
}

.footer {
    background: var(--secondary-color);
    color: white;
    padding: 30px 20px;
    text-align: center;
    margin-top: 60px;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 32px;
    }

    .features-grid,
    .download-grid {
        grid-template-columns: 1fr;
    }
}