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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    line-height: 1.7;
    color: #e2e8f0;
    background: #1a202c;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */

header {
    background: #2d3748;
    padding: 2rem 0;
    border-bottom: 1px solid #4a5568;
}

.header-content {
    text-align: left;
}

.logo {
    font-size: 3rem;
    font-weight: 700;
    color: #63b3ed;
    margin-bottom: 0.5rem;
}

.tagline {
    font-size: 1rem;
    color: #a0aec0;
    font-weight: 400;
    letter-spacing: 0.5px;
}

/* Container */

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Main Content */

main {
    flex: 1;
    padding: 4rem 0;
}

h1 {
    font-size: 2.75rem;
    margin-bottom: 1rem;
    color: #f7fafc;
    font-weight: 700;
}

h2 {
    font-size: 1.75rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: #f7fafc;
    font-weight: 600;
}

h3 {
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: #e2e8f0;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
    color: #cbd5e0;
    font-size: 1rem;
    line-height: 1.8;
}

strong {
    color: #e2e8f0;
    font-weight: 600;
}

ul, ol {
    margin-bottom: 1rem;
    margin-left: 1.5rem;
    color: #cbd5e0;
}

li {
    margin-bottom: 0.5rem;
}

a {
    color: #63b3ed;
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #90cdf4;
    text-decoration: underline;
}

a:has(img.medium-badge):hover {
    text-decoration: none; 
    color: inherit; 
}

a:has(img.download-cta-badge):hover {
    text-decoration: none; 
    color: inherit; 
}

.subtitle {
    color: #a0aec0;
    font-size: 1rem;
    margin-bottom: 2rem;
}

.content-section {
    border-left: 3px solid #63b3ed;
    padding-left: 1.5rem;
}

/* Download Call to Action Highlight */

.download-cta {
    text-align: center; 
    background-color: #2d3748;
    border-radius: 12px;
    border-left: none; 
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    margin: 2.2rem auto 0rem auto;
    padding: 1.0rem 2.5rem 1.5rem 2.5rem;
}

.download-cta .download-text {
    font-size: 1.15rem;
    color: #a0aec0;
}

.download-cta-badge {
    height: 80px;
    width: auto;
    display: block; 
    margin: auto;
}

.medium-badge {
    height: 80px;
    width: auto;
}

/* Contact Information Box Styles */

.contact-box {
    background: #2d3748; 
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.contact-text {
    margin: 0; 
    font-size: 1rem;
    line-height: 1.8;
}

.contact-link {
    color: #63b3ed;
    text-decoration: none;
}

.contact-link:hover {
    color: #90cdf4;
    text-decoration: underline;
}

/* Footer */

footer {
    background: #2d3748;
    padding: 2rem 0;
    border-top: 1px solid #4a5568;
    margin-top: 4rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: #cbd5e0;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-links a:hover {
    color: #63b3ed;
    text-decoration: none;
}

.footer-links a.active {
    color: #63b3ed;
}

.footer-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: #63b3ed;
}

/* Responsive Design */

@media (max-width: 768px) {
    .logo {
        font-size: 2.25rem;
    }
    
    .tagline {
        font-size: 0.9rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    main {
        padding: 2rem 0;
    }
    
    .footer-links {
        gap: 1.5rem;
    }
    
    .content-section {
        padding-left: 1rem;
    }
}