@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400&display=swap');
        
        :root {
            --primary-cyan: #00e5ff;
            --secondary-cyan: #0891b2;
            --dark-bg: #0a0a0a;
            --card-bg: #111111;
            --card-hover: #1a1a1a;
            --text-primary: #ffffff;
            --text-secondary: #b0b0b0;
            --text-muted: #808080;
            --border-color: rgba(0, 229, 255, 0.2);
            --shadow-color: rgba(0, 229, 255, 0.1);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--dark-bg);
            color: var(--text-primary);
            line-height: 1.6;
            scroll-behavior: smooth;
        }
        
        /* Header & Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(10, 10, 10, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: all 0.3s ease;
        }
        
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }
        
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-cyan);
            text-decoration: none;
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        
        .nav-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }
        
        .nav-link:hover,
        .nav-link.active {
            color: var(--primary-cyan);
        }
        
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-cyan);
            transition: width 0.3s ease;
        }
        
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        
        /* Main Content */
        .main-content {
            padding-top: 70px;
        }
        
        .section {
            padding: 4rem 0;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 2rem;
            padding-right: 2rem;
        }
        
        /* Hero Section */
        .hero {
            min-height: 90vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.05) 0%, transparent 50%);
            padding-left: 0;
            padding-right: 0;
            max-width: none;
            margin: 0;
        }
        
        .hero .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            width: 100%;
        }
        
        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }
        
        .hero-text h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-cyan) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .hero-text .subtitle {
            font-size: 1.3rem;
            color: var(--primary-cyan);
            font-weight: 500;
            margin-bottom: 1.5rem;
        }
        
        .hero-text .description {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        
        .cta-buttons {
            display: flex;
            gap: 1rem;
        }
        
        .btn {
            padding: 0.75rem 2rem;
            border: none;
            border-radius: 8px;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .btn-primary {
            background: var(--primary-cyan);
            color: var(--dark-bg);
        }
        
        .btn-primary:hover {
            background: var(--secondary-cyan);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(0, 229, 255, 0.3);
        }
        
        .btn-secondary {
            background: transparent;
            color: var(--primary-cyan);
            border: 2px solid var(--primary-cyan);
        }
        
        .btn-secondary:hover {
            background: var(--primary-cyan);
            color: var(--dark-bg);
        }
        
        .hero-stats {
            background: var(--card-bg);
            border-radius: 16px;
            padding: 2rem;
            border: 1px solid var(--border-color);
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        
        .stat-item {
            text-align: center;
        }
        
        .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-cyan);
            display: block;
        }
        
        .stat-label {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        
        /* Section Headers */
        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }
        
        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        
        /* Cards */
        .card {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 2rem;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            height: 100%;
        }
        
        .card:hover {
            background: var(--card-hover);
            border-color: var(--primary-cyan);
            transform: translateY(-5px);
            box-shadow: 0 10px 40px var(--shadow-color);
        }
        
        /* About Section */
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        
        .about-text {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        
        .expertise-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }
        
        .expertise-card {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 2rem;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        
        .expertise-card:hover {
            border-color: var(--primary-cyan);
            transform: translateY(-5px);
        }
        
        .expertise-icon {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--primary-cyan), var(--secondary-cyan));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }
        
        .expertise-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        
        .expertise-description {
            color: var(--text-secondary);
            line-height: 1.6;
        }
        
        /* Projects Section */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
        }
        
        .project-card {
            background: var(--card-bg);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        
        .project-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-cyan);
            box-shadow: 0 10px 40px var(--shadow-color);
        }
        
        .project-image {
            width: 100%;
            height: 200px;
            background: var(--card-hover);
            display: flex;
            align-items: center;
            justify-content: center;
            border-bottom: 1px solid var(--border-color);
        }
        
        .project-image img {
            max-width: 100%;
            max-height: 100%;
            object-fit: cover;
            border: none;
            border-radius: 0;
            box-shadow: none;
        }
        
        .project-content {
            padding: 2rem;
        }
        
        .project-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        
        .project-description {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }
        
        .project-tech {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }
        
        .tech-tag {
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary-cyan);
            padding: 0.25rem 0.75rem;
            border-radius: 16px;
            font-size: 0.85rem;
            font-weight: 500;
        }
        
        .project-links {
            display: flex;
            gap: 1rem;
        }
        
        .project-link {
            padding: 0.5rem 1rem;
            background: transparent;
            color: var(--primary-cyan);
            border: 1px solid var(--primary-cyan);
            border-radius: 6px;
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .project-link:hover {
            background: var(--primary-cyan);
            color: var(--dark-bg);
        }
        
        /* CTF Section */
        .ctf-grid {
            display: grid;
            gap: 2rem;
        }
        
        .ctf-card {
            background: var(--card-bg);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        
        .ctf-card:hover {
            border-color: var(--primary-cyan);
        }
        
        .ctf-header {
            padding: 1.5rem 2rem;
            background: rgba(0, 229, 255, 0.05);
            border-bottom: 1px solid var(--border-color);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .ctf-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        
        .ctf-tactics {
            color: var(--primary-cyan);
            font-size: 0.9rem;
            font-weight: 500;
        }
        
        .ctf-content {
            padding: 2rem;
            display: none;
        }
        
        .ctf-content.active {
            display: block;
        }
        
        .ctf-content h2 {
            color: var(--primary-cyan);
            font-size: 1.3rem;
            margin: 2rem 0 1rem 0;
        }
        
        .ctf-content h3 {
            color: var(--text-primary);
            font-size: 1.1rem;
            margin: 1.5rem 0 0.75rem 0;
        }
        
        .ctf-content p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
            line-height: 1.7;
        }
        
        .ctf-content ul,
        .ctf-content ol {
            color: var(--text-secondary);
            margin: 1rem 0 1rem 2rem;
        }
        
        .ctf-content li {
            margin-bottom: 0.5rem;
        }
        
        .ctf-content pre {
            background: #000;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 1rem;
            overflow-x: auto;
            margin: 1rem 0;
            font-family: 'JetBrains Mono', monospace;
        }
        
        .ctf-content code {
            color: var(--primary-cyan);
            font-family: 'JetBrains Mono', monospace;
        }
        
        .ctf-content img {
            max-width: 100%;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            margin: 1rem 0;
        }
        
        .expand-icon {
            transition: transform 0.3s ease;
        }
        
        .expand-icon.rotated {
            transform: rotate(180deg);
        }
        
        /* Blog Section */
        .blog-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
        }
        
        .blog-card {
            background: var(--card-bg);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        
        .blog-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-cyan);
            box-shadow: 0 10px 40px var(--shadow-color);
        }
        .blog-card-link,
        .blog-card-link:hover,
        .blog-card-link:visited,
        .blog-card-link:active,
        .blog-card-link:focus {
            text-decoration: none !important;
            color: inherit;
            display: block;
        }

        .blog-card-link *,
        .blog-card-link *:hover,
        .blog-card-link *:visited,
        .blog-card-link *:active,
        .blog-card-link *:focus {
            text-decoration: none !important;
        }
        
        .blog-content {
            padding: 2rem;
        }
        
        .blog-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
        }
        
        .blog-category {
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary-cyan);
            padding: 0.25rem 0.75rem;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        
        .blog-date {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        
        .blog-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 1rem;
            line-height: 1.4;
        }
        
        .blog-excerpt {
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }
        
        .blog-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        
        .blog-tag {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-secondary);
            padding: 0.25rem 0.5rem;
            border-radius: 12px;
            font-size: 0.75rem;
            border: 1px solid var(--border-color);
        }
        
        /* Research Section */
        .research-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }
        
        .research-card {
            background: var(--card-bg);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        
        .research-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-cyan);
            box-shadow: 0 10px 40px var(--shadow-color);
        }
        
        .research-content {
            padding: 2rem;
        }
        
        .research-status {
            margin-bottom: 1rem;
        }
        
        .status-badge {
            padding: 0.25rem 0.75rem;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        
        .status-badge.in-progress {
            background: rgba(255, 193, 7, 0.1);
            color: #ffc107;
            border: 1px solid rgba(255, 193, 7, 0.3);
        }
        
        .status-badge.planned {
            background: rgba(108, 117, 125, 0.1);
            color: #6c757d;
            border: 1px solid rgba(108, 117, 125, 0.3);
        }
        
        .research-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 1rem;
            line-height: 1.4;
        }
        
        .research-description {
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }
        
        .research-topics {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        
        .topic-tag {
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary-cyan);
            padding: 0.25rem 0.5rem;
            border-radius: 12px;
            font-size: 0.75rem;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }
        
        .research-note {
            background: rgba(0, 229, 255, 0.05);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1.5rem;
            text-align: center;
        }
        
        .research-note p {
            color: var(--text-secondary);
            margin: 0;
            font-style: italic;
        }
        
        /* Footer */
        .footer {
            background: var(--card-bg);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0;
            margin-top: 4rem;
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        
        .footer-info h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--primary-cyan);
        }
        
        .footer-info p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }
        
        .social-links {
            display: flex;
            gap: 1rem;
        }
        
        .social-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.5rem;
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .social-link:hover {
            border-color: var(--primary-cyan);
            color: var(--primary-cyan);
            transform: translateY(-2px);
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
            color: var(--text-muted);
        }
        
        /* Responsive Design */
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            
            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            
            .hero-text h1 {
                font-size: 2.5rem;
            }
            
            .about-content {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            
            .section {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }
        
        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .animate-on-scroll {
            animation: fadeInUp 0.6s ease-out;
        }