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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #ffffff;
}

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

/* Navigation */
.nav {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e7eb;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 12px;
    color: #6b7280;
    font-weight: 500;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #667eea;
}

.cta-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    color: #1f2937;
}

.highlight {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 18px;
    color: #6b7280;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.primary-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease;
    font-size: 16px;
}

.primary-button:hover {
    transform: translateY(-2px);
}

.primary-button.large {
    padding: 18px 36px;
    font-size: 18px;
}

.secondary-button {
    background: transparent;
    color: #374151;
    border: 2px solid #d1d5db;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 16px;
}

.secondary-button:hover {
    border-color: #667eea;
    color: #667eea;
}

/* Graph Visualization */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.graph-visualization {
    position: relative;
    width: 300px;
    height: 300px;
}

.node {
    position: absolute;
    background: white;
    border: 3px solid #667eea;
    border-radius: 50%;
    padding: 12px 16px;
    font-weight: 600;
    font-size: 14px;
    color: #667eea;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.2);
    animation: float 3s ease-in-out infinite;
}

.node.ai {
    top: 20px;
    left: 50px;
    animation-delay: 0s;
}

.node.quantum {
    top: 80px;
    right: 20px;
    animation-delay: 0.5s;
}

.node.battery {
    bottom: 80px;
    right: 60px;
    animation-delay: 1s;
}

.node.robotics {
    bottom: 20px;
    left: 20px;
    animation-delay: 1.5s;
}

.connection {
    position: absolute;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 2px;
    opacity: 0.6;
}

.connection.c1 {
    top: 50px;
    left: 80px;
    width: 120px;
    transform: rotate(30deg);
}

.connection.c2 {
    bottom: 120px;
    left: 60px;
    width: 140px;
    transform: rotate(-45deg);
}

.connection.c3 {
    bottom: 50px;
    left: 100px;
    width: 100px;
    transform: rotate(45deg);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* Value Proposition */
.value-prop {
    padding: 80px 0;
    background: white;
}

.value-prop h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 50px;
    color: #1f2937;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.value-item {
    text-align: center;
    padding: 30px;
    border-radius: 12px;
    background: #f8fafc;
    transition: transform 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
}

.value-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.value-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #1f2937;
}

.value-item p {
    color: #6b7280;
    line-height: 1.6;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.features h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 50px;
    color: #1f2937;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #1f2937;
}

.feature-card p {
    color: #6b7280;
    margin-bottom: 20px;
    line-height: 1.6;
}

.feature-card ul {
    list-style: none;
}

.feature-card li {
    color: #667eea;
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.feature-card li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

/* Use Cases Section */
.use-cases {
    padding: 80px 0;
    background: white;
}

.use-cases h2 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 40px;
    color: #1f2937;
}

.use-case-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.tab-button {
    background: transparent;
    border: 2px solid #d1d5db;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-button.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

.tab-content {
    display: none;
    max-width: 800px;
    margin: 0 auto;
}

.tab-content.active {
    display: block;
}

.question-card {
    background: #f8fafc;
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 20px;
    border-left: 4px solid #667eea;
}

.question-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #1f2937;
}

.question-card p {
    color: #6b7280;
    margin-bottom: 16px;
    line-height: 1.6;
}

.query-example {
    background: #1f2937;
    color: #e5e7eb;
    padding: 16px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    overflow-x: auto;
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    text-align: center;
    color: white;
}

.cta-section h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 40px 0;
}

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

.footer-brand .logo {
    color: white;
    background: none;
    -webkit-text-fill-color: white;
}

.footer-brand p {
    margin-top: 8px;
    color: #9ca3af;
}

.footer-links {
    display: flex;
    gap: 30px;
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .value-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}