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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf1 100%);
    color: #333;
    min-height: 100vh;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e40af;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: #4b5563;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #1e40af;
}

.get-started-btn {
    background: #3deefe;
    color: white ;
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s;
    transition: background 0.3s, transform 0.2s;
}

.get-started-btn:hover {
    background: #3deefe;
    transform: translateY(-2px);
    
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: 6rem 5%;
    max-width: 1400px;
    margin: 0 auto;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: #1f2937;
}

.hero-content p {
    font-size: 1.15rem;
    line-height: 1.7;
    color: #6b7280;
    margin-bottom: 2.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
}

.btn-primary {
    background: #1e40af;
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s, transform 0.2s;
}

.btn-primary:hover {
    background: #1e3a8a;
    transform: translateY(-2px);
}

.btn-secondary {
    background: white;
    color: #1e40af;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    border: 2px solid #e5e7eb;
    transition: border-color 0.3s, transform 0.2s;

}

.btn-secondary:hover {
    border-color: #1e40af;
    transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    height: 500px;
}

.tech-diagram {
    position: relative;
    width: 100%;
    height: 100%;
}

.node {
    position: absolute;
    width: 12px;
    height: 12px;
    background: #1e40af;
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(30, 64, 175, 0.4);
}

.node-large {
    width: 80px;
    height: 80px;
    background: white;
    border: 3px solid #1e40af;
    top: 50%;
    right: 10%;
}

.square {
    position: absolute;
    width: 60px;
    height: 60px;
    background: white;
    border: 3px solid #6b7280;
    border-radius: 8px;
    bottom: 20%;
    left: 15%;
}

.cloud {
    position: absolute;
    width: 120px;
    height: 80px;
    background: rgba(147, 197, 253, 0.2);
    border-radius: 40px;
    top: 35%;
    right: 25%;
}

.line {
    position: absolute;
    background: #1e40af;
    height: 2px;
}

.bars {
    position: absolute;
    display: flex;
    gap: 8px;
    top: 15%;
    left: 35%;
}

.bar {
    width: 8px;
    background: #10b981;
    border-radius: 4px;
}

/* Technology Branches Section */
.tech-branches {
    padding: 5rem 5%;
    background: white;
}

.tech-branches-header {
    text-align: center;
    margin-bottom: 4rem;
}

.tech-branches-header h2 {
    font-size: 2.5rem;
    color: #1f2937;
    margin-bottom: 1rem;
}

.tech-branches-header p {
    font-size: 1.15rem;
    color: #6b7280;
}

.branches-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.branch-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    transition: transform 0.3s, box-shadow 0.3s;
}

.branch-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.branch-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #0f5f8f, #1e40af);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
    color: white;
}

.branch-card h3 {
    font-size: 1.5rem;
    color: #1f2937;
    margin-bottom: 1rem;
}

.branch-card p {
    color: #6b7280;
    line-height: 1.6;
}

/* Articles Section */
.articles-section {
    padding: 5rem 5%;
    background: #f9fafb;
}

.articles-header {
    text-align: center;
    margin-bottom: 4rem;
}

.articles-header h2 {
    font-size: 2.5rem;
    color: #1f2937;
    margin-bottom: 1rem;
}

.articles-header p {
    font-size: 1.15rem;
    color: #6b7280;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto 3rem;
}

.article-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    transition: transform 0.3s, box-shadow 0.3s;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.article-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.article-card-content {
    padding: 2rem;
}

.article-category {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: #dbeafe;
    color: #1e40af;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.article-card h3 {
    font-size: 1.4rem;
    color: #1f2937;
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.article-meta {
    display: flex;
    gap: 1.5rem;
    color: #6b7280;
    font-size: 0.9rem;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.view-all-btn {
    display: block;
    width: fit-content;
    margin: 0 auto;
    padding: 1rem 2.5rem;
    background: white;
    color: #1f2937;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: border-color 0.3s, transform 0.2s;
}

.view-all-btn:hover {
    border-color: #1e40af;
    transform: translateY(-2px);
}

/* About Section */
.about-section {
    padding: 5rem 5%;
    background: linear-gradient(135deg, #1e40af 0%, #0e7490 100%);
    color: white;
    text-align: center;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-content h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.about-content p {
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    opacity: 0.95;
}

/* Footer */
footer {
    background: #1f2937;
    color: white;
    padding: 3rem 5% 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    max-width: 1400px;
    margin: 0 auto 2rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: #9ca3af;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: background 0.3s;
}

.social-icon:hover {
    background: #1e40af;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-visual {
        height: 400px;
    }

    .nav-links {
        gap: 1rem;
    }

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

    .tech-branches-header h2 {
        font-size: 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .articles-header h2,
    .about-content h2 {
        font-size: 2rem;
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .cta-buttons {
        flex-direction: column;
    }
}