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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Header */
header {
    background: linear-gradient(135deg, #2c5282, #3182ce);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
}

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

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

.nav-links a:hover {
    color: #90cdf4;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, rgba(66, 153, 225, 0.9), rgba(49, 130, 206, 0.9)),
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%234299e1" width="1200" height="600"/><g fill="%23ffffff" opacity="0.1"><circle cx="200" cy="150" r="80"/><circle cx="600" cy="250" r="60"/><circle cx="1000" cy="180" r="90"/><rect x="300" y="300" width="150" height="80" rx="10"/><rect x="700" y="350" width="120" height="60" rx="8"/></g></svg>');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 120px 0 80px;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    background: #38a169;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background 0.3s ease, transform 0.2s ease;
}

.cta-button:hover {
    background: #2f855a;
    transform: translateY(-2px);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: #2d3748;
    margin-bottom: 3rem;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    max-width: 800px;
    margin: 0 auto 4rem;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border-left: 4px solid #4299e1;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #e6fffa, #b2f5ea);
    border-radius: 0 12px 0 50px;
    opacity: 0.7;
}

.service-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #4299e1, #3182ce);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
}

.service-icon::after {
    content: '';
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.service-card h3 {
    color: #2d3748;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.service-card p {
    color: #666;
    line-height: 1.6;
}

/* Expertise Section */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.expert-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border-top: 4px solid #38a169;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.expert-card::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, rgba(66, 153, 225, 0.1), rgba(56, 161, 105, 0.1));
    border-radius: 50%;
    z-index: 1;
}

.expert-content {
    position: relative;
    z-index: 2;
}

.expert-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #4299e1, #38a169);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.8rem;
    color: white;
    font-weight: bold;
}

.expert-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.expert-card h3 {
    color: #2d3748;
    font-size: 1.6rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.expert-title {
    color: #4299e1;
    font-weight: 600;
    margin-bottom: 1.5rem !important;
    font-size: 1.1rem;
}

.expert-card p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.expert-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.highlight {
    background: #e6fffa;
    color: #234e52;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid #b2f5ea;
}

.publications-note {
    background: #f0fff4;
    padding: 2rem;
    border-radius: 12px;
    margin-top: 3rem;
    border-left: 4px solid #38a169;
}

.publications-note p {
    color: #2d3748;
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
}

/* About Section */
.about {
    background: linear-gradient(135deg, rgba(247, 250, 252, 0.9), rgba(237, 242, 247, 0.9)),
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 400"><rect fill="%23f7fafc" width="1200" height="400"/><g fill="%234299e1" opacity="0.05"><path d="M0,200 Q300,100 600,200 T1200,200 L1200,400 L0,400 Z"/><circle cx="100" cy="100" r="40"/><circle cx="1100" cy="80" r="30"/><rect x="500" y="50" width="200" height="100" rx="20" opacity="0.3"/></g></svg>');
    background-size: cover;
    background-position: center;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    color: #2d3748;
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.about-text p {
    color: #666;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.about-features {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

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

.feature-list li {
    padding: 0.8rem 0;
    border-bottom: 1px solid #e2e8f0;
    color: #4a5568;
    font-weight: 500;
}

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

.feature-list li:before {
    content: "✓";
    color: #38a169;
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, #2d3748, #4a5568);
    color: white;
}

.contact-content {
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.contact p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.contact-item {
    background: rgba(255,255,255,0.1);
    padding: 1.5rem;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.contact-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

/* Footer */
footer {
    background: #1a202c;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

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

    .section-title {
        font-size: 2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Animation for cards on scroll */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card, .about-features {
    animation: fadeInUp 0.6s ease forwards;
}