:root {
            --color-primary: #1a1a2e;
            --color-secondary: #0f4c75;
            --color-accent: #3282b8;
            --color-light: #bbe1fa;
            --color-bg: #ffffff;
            --color-text: #2d3436;
            --color-text-light: #636e72;
            --color-border: #e8ecef;
            
            --font-serif: 'Avenir', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-sans: 'Avenir', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 3rem;
            --spacing-xl: 4rem;
            
            --max-width: 1200px;
            --content-width: 900px;
        }
        
        
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        
        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            line-height: 1.7;
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            z-index: 1000;
            transition: box-shadow 0.3s ease;
        }
        
        nav.scrolled {
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
        }
        
        .nav-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: var(--spacing-sm) var(--spacing-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .nav-logo {
            font-family: var(--font-serif);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
        }
        
        .nav-links {
            display: flex;
            gap: var(--spacing-md);
            list-style: none;
        }
        
        .nav-links a {
            color: var(--color-text);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s ease;
            position: relative;
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            transition: width 0.3s ease;
        }
        
        .nav-links a:hover {
            color: var(--color-accent);
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .nav-links a.active {
            color: var(--color-accent);
        }
        
        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 5px;
        }
        
        .menu-toggle span {
            width: 25px;
            height: 2px;
            background: var(--color-primary);
            transition: all 0.3s ease;
        }
        
        /* Hero Section */
        .hero {
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            display: grid;
            grid-template-columns: 1fr 220px;
            gap: var(--spacing-lg);
            align-items: center;
            margin-bottom: var(--spacing-lg);
        }
        
        .hero-content h1 {
            font-family: var(--font-serif);
            font-size: 2.75rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.02em;
        }
        
        .hero-content .subtitle {
            font-size: 1.2rem;
            color: var(--color-secondary);
            font-weight: 500;
            margin-bottom: var(--spacing-sm);
        }
        
        .hero-content .affiliation {
            font-size: 1rem;
            color: var(--color-text-light);
            margin-bottom: var(--spacing-md);
        }
        
        .hero-image {
            position: relative;
        }
        
        .hero-image img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .hero-image img:hover {
            transform: translateY(-5px);
            box-shadow: 0 25px 70px rgba(0, 0, 0, 0.15);
        }
        
        .social-links {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-top: var(--spacing-md);
        }
        
        .social-links a {
            display: inline-flex;
            align-items: center;
            padding: 0.6rem 1.2rem;
            background: var(--color-primary);
            color: white;
            text-decoration: none;
            border-radius: 6px;
            font-weight: 500;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        
        .social-links a:hover {
            background: var(--color-secondary);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(15, 76, 117, 0.3);
        }
        
        /* Sections */
        section {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: var(--spacing-lg) var(--spacing-md);
        }

        /* About section with integrated hero */
        #about {
            padding-top: var(--spacing-lg);
            margin-top: 80px;
        }

        .about-content {
            max-width: var(--content-width);
            margin: 0 auto;
        }

        .about-content h2 {
            font-family: var(--font-serif);
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.02em;
        }

        .about-content h3 {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-top: var(--spacing-lg);
            margin-bottom: var(--spacing-sm);
        }

        .about-content p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--color-text);
            margin-bottom: var(--spacing-md);
        }
        
        section h2 {
            font-family: var(--font-serif);
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.02em;
        }
        
        section h3 {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-top: var(--spacing-lg);
            margin-bottom: var(--spacing-sm);
        }
        
        section p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--color-text);
            margin-bottom: var(--spacing-md);
        }
        
        section a {
            color: var(--color-accent);
            text-decoration: none;
            font-weight: 500;
        }
        
        section a:hover {
            text-decoration: underline;
        }
        
        /* About Section */
        #about {
            background: linear-gradient(to bottom, rgba(187, 225, 250, 0.08), transparent);
        }
        
        .research-areas {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }
        
        .research-card {
            padding: var(--spacing-md);
            background: white;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        /* Technology cards - centered */
        .research-card:has(.tech-icon) {
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        /* Research area cards - left-aligned text and heading */
        .research-card:has(p) {
            text-align: left;
        }

        .research-card:has(p) h4 {
            text-align: left;
        }
        
        .research-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            border-color: var(--color-accent);
        }
        
        .research-card h4 {
            color: var(--color-secondary);
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
            font-size: 1.05rem;
        }

        .research-card p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            margin: 0;
        }

        .tech-icon {
            width: 48px;
            height: 48px;
            margin-bottom: var(--spacing-sm);
            opacity: 0.85;
            transition: all 0.3s ease;
        }

        .research-card:hover .tech-icon {
            opacity: 1;
            transform: scale(1.1);
        }
        
        /* Featured Publications */
        #featured-publications {
            background: linear-gradient(to bottom, transparent, rgba(187, 225, 250, 0.05));
        }
        
        .publication-item {
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-md);
            border-left: 3px solid var(--color-light);
            background: rgba(187, 225, 250, 0.03);
            border-radius: 0 6px 6px 0;
            transition: all 0.3s ease;
        }

        /* Publications with images - flex layout */
        .publication-item:has(.publication-image) {
            display: flex;
            gap: var(--spacing-md);
            align-items: center;
        }

        .publication-image {
            flex-shrink: 0;
            width: 150px;
            height: 100px;
            border-radius: 6px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

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

        .publication-item:hover .publication-image img {
            transform: scale(1.05);
        }

        .publication-content {
            flex: 1;
        }
        
        .publication-item.featured {
            border-left-color: var(--color-accent);
            background: rgba(50, 130, 184, 0.05);
        }
        
        .publication-item:hover {
            border-left-color: var(--color-accent);
            background: rgba(187, 225, 250, 0.08);
            transform: translateX(3px);
        }
        
        .publication-title {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-primary);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        
        .publication-authors {
            color: var(--color-text-light);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
            line-height: 1.5;
        }
        
        .publication-authors strong {
            color: var(--color-secondary);
            font-weight: 600;
        }
        
        .publication-venue {
            color: var(--color-accent);
            font-weight: 500;
            font-size: 0.85rem;
            font-style: italic;
        }
        
        .view-all-link {
            display: inline-block;
            margin-top: var(--spacing-md);
            padding: 0.8rem 1.5rem;
            background: var(--color-accent);
            color: white;
            text-decoration: none;
            border-radius: 6px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .view-all-link:hover {
            background: var(--color-secondary);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(15, 76, 117, 0.3);
            text-decoration: none;
        }
        
        /* Contact Section */
        #contact {
            background: linear-gradient(to bottom, transparent, rgba(187, 225, 250, 0.08));
        }
        
        .contact-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }
        
        .contact-item {
            padding: var(--spacing-md);
            background: white;
            border: 1px solid var(--color-border);
            border-radius: 8px;
        }
        
        .contact-item h4 {
            color: var(--color-secondary);
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
        }
        
        .contact-item p {
            margin: 0;
            font-size: 0.95rem;
        }
        
        .contact-item a {
            color: var(--color-accent);
            text-decoration: none;
            word-break: break-word;
        }
        
        .contact-item a:hover {
            text-decoration: underline;
        }
        
        /* Footer */
        footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
        }
        
        .footer-content {
            max-width: var(--max-width);
            margin: 0 auto;
        }
        
        footer p {
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }
        
        footer a {
            color: var(--color-light);
            text-decoration: none;
        }
        
        footer a:hover {
            color: white;
            text-decoration: underline;
        }
        
        /* Responsive Design */
        @media (max-width: 768px) {
            :root {
                --spacing-xl: 2.5rem;
                --spacing-lg: 2rem;
            }

            .publication-item:has(.publication-image) {
                flex-direction: column;
                align-items: flex-start;
            }

            .publication-image {
                width: 100%;
                height: 150px;
            }
            
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: white;
                border-bottom: 1px solid var(--color-border);
                padding: var(--spacing-sm);
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            }
            
            .nav-links.active {
                display: flex;
            }
            
            .nav-links a::after {
                display: none;
            }
            
            .menu-toggle {
                display: flex;
            }
            
            #about {
                margin-top: 60px;
            }

            .hero {
                grid-template-columns: 1fr;
                text-align: center;
                gap: var(--spacing-md);
                margin-bottom: var(--spacing-md);
            }

            .hero-image {
                max-width: 200px;
                margin: 0 auto;
            }
            
            .hero-content h1 {
                font-size: 2.2rem;
            }
            
            .hero-content .subtitle {
                font-size: 1.05rem;
            }
            
            .social-links {
                justify-content: center;
            }
            
            section h2 {
                font-size: 1.9rem;
            }
            
            section h3 {
                font-size: 1.35rem;
            }
            
            .research-areas {
                grid-template-columns: 1fr;
            }
        }
        
        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero,
        section {
            animation: fadeInUp 0.8s ease-out;
        }

    

.pub-intro {
    background: rgba(50, 130, 184, 0.05);
    padding: var(--spacing-md);
    border-left: 4px solid var(--color-accent);
    border-radius: 0 8px 8px 0;
    margin-bottom: var(--spacing-lg);
}

.year-heading {
    font-family: var(--font-sans);
    font-size: 1.75rem !important;
    font-weight: 700;
    color: var(--color-secondary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--color-accent);
}

@media (max-width: 768px) {
    .year-heading {
        font-size: 1.5rem !important;
    }
}


/* Publication title links */
.publication-title a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.publication-title a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}