/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 600;
}

.logo i {
    margin-right: 10px;
    color: #3498db;
}

.contact-info {
    display: flex;
    align-items: center;
    font-weight: 500;
}

.contact-info i {
    margin-right: 8px;
    color: #3498db;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 4rem 0;
    border-bottom: 1px solid #dee2e6;
}

.hero-section h1 {
    font-size: 3rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-description {
    font-size: 1.2rem;
    color: #495057;
    margin-bottom: 2rem;
    max-width: 800px;
    line-height: 1.7;
}

.keyword-link {
    color: #2980b9;
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.keyword-link:hover {
    color: #1e6091;
    border-bottom-color: #3498db;
}

.hero-cta {
    margin-top: 2rem;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2980b9 0%, #1e6091 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

/* Content Section */
.content-section {
    padding: 4rem 0;
}

.content-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin: 3rem 0 1.5rem 0;
    border-bottom: 3px solid #3498db;
    padding-bottom: 0.5rem;
}

.content-section h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #34495e;
    margin: 2rem 0 1rem 0;
}

.content-section h4 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #2c3e50;
    margin: 1.5rem 0 0.8rem 0;
    display: flex;
    align-items: center;
}

.content-section h4 i {
    margin-right: 10px;
    color: #3498db;
    width: 24px;
}

.content-section p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #495057;
}

.content-section strong {
    color: #2c3e50;
    font-weight: 600;
}

/* Applications Grid */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.application-card {
    background: #ffffff;
    border: 1px solid #e9ecef;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.application-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.application-card h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.application-card h4 i {
    background: linear-gradient(135deg, #3498db, #2980b9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.5rem;
}

.application-card p {
    font-size: 1rem;
    margin-bottom: 0;
}

/* Brands Section */
.brands-section {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
}

.brand-list {
    list-style: none;
    padding: 0;
}

.brand-list li {
    padding: 1rem 0;
    border-bottom: 1px solid #dee2e6;
    font-size: 1.1rem;
    line-height: 1.7;
}

.brand-list li:last-child {
    border-bottom: none;
}

.brand-list strong {
    color: #2980b9;
    font-weight: 600;
}

/* FAQ Section */
.faq-section {
    margin: 3rem 0;
}

.faq-item {
    background: #ffffff;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.faq-item h4 {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 1.5rem;
    margin: 0;
    font-size: 1.2rem;
    color: #2c3e50;
    border-bottom: 1px solid #dee2e6;
}

.faq-item p {
    padding: 1.5rem;
    margin: 0;
    font-size: 1rem;
    line-height: 1.7;
}

/* Lists */
ul {
    margin: 1rem 0 1rem 2rem;
}

li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 2rem 0;
    text-align: center;
    margin-top: 4rem;
}

.footer p {
    margin: 0;
    font-size: 0.95rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.2rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .content-section h2 {
        font-size: 2rem;
    }
    
    .content-section h3 {
        font-size: 1.5rem;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .applications-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .application-card {
        padding: 1.5rem;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 2rem 0;
    }
    
    .hero-section h1 {
        font-size: 1.8rem;
    }
    
    .content-section {
        padding: 2rem 0;
    }
    
    .content-section h2 {
        font-size: 1.7rem;
    }
    
    .faq-item h4 {
        padding: 1rem;
        font-size: 1.1rem;
    }
    
    .faq-item p {
        padding: 1rem;
    }
}

/* Print Styles */
@media print {
    .header, .footer, .hero-cta {
        display: none;
    }
    
    .hero-section {
        background: none;
        padding: 1rem 0;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3, h4 {
        page-break-after: avoid;
    }
}