:root {
            --bg-primary: #ffffff;
            --bg-secondary: #f5f5f7;
            --bg-tertiary: #e8e8ed;
            --bg-card: #ffffff;
            --text-primary: #1d1d1f;
            --text-secondary: #3a3a3c;
            --text-muted: #636366;
            --accent-primary: #5b4fcf;
            --accent-secondary: #764ba2;
            --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --border-light: #d2d2d7;
            --border-medium: #c2c2c7;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
            --shadow-xl: 0 12px 48px rgba(0,0,0,0.1);
            --math-symbol: #1d1d1f;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
        }

        /* Math Symbols Styling */
        .math-symbol {
            font-family: 'Times New Roman', Georgia, serif;
            font-style: italic;
            font-weight: 600;
            color: var(--math-symbol);
        }
        
        .greek-upper {
            font-size: 1.2em;
            font-weight: 700;
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, #1d1d1f 0%, #2d2d2f 50%, #1d1d1f 100%);
            padding: 120px 20px 100px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        /* Video hero: transparent section, no decorative layers */
        .hero:has(.hero-bg) {
            background: transparent !important;
        }
        .hero:has(.hero-bg)::before,
        .hero:has(.hero-bg)::after {
            display: none !important;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: 
                radial-gradient(circle at 20% 50%, rgba(110, 110, 115, 0.12) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(161, 161, 166, 0.08) 0%, transparent 50%);
            pointer-events: none;
        }
        
        .hero::after {
            content: 'Σ ∫ π μ σ Δ √ ∝ ∞';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 20vw;
            font-family: 'Times New Roman', serif;
            color: rgba(255,255,255,0.015);
            letter-spacing: 0.1em;
            white-space: nowrap;
            pointer-events: none;
            z-index: 0;
        }

        .hero-content {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .hero-badge {
            display: inline-block;
            padding: 8px 20px;
            background: rgba(110, 110, 115, 0.15);
            border: 1px solid rgba(110, 110, 115, 0.3);
            border-radius: 50px;
            color: #d2d2d7;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            text-transform: uppercase;
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 20px;
            letter-spacing: -0.03em;
            line-height: 1.1;
        }

        .hero h1 span {
            background: linear-gradient(135deg, #f5f5f7 0%, #a1a1a6 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero p {
            font-size: 1.25rem;
            color: #a1a1a6;
            max-width: 700px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 60px;
            margin-top: 60px;
            flex-wrap: wrap;
        }

        .stat-item {
            text-align: center;
        }

        .stat-value {
            font-size: 3rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f5f5f7 0%, #86868b 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
        }

        .stat-label {
            font-size: 0.9rem;
            color: #86868b;
            margin-top: 8px;
            font-weight: 500;
        }

        /* Monte Carlo Formula Animation - Dyslexia Effect */
        .monte-carlo-formula-container {
            margin-top: 80px;
            padding: 40px 20px;
            position: relative;
        }

        .monte-carlo-formula {
            font-family: 'Times New Roman', Georgia, serif;
            font-size: 2.5rem;
            color: #a1a1a6;
            text-align: center;
            display: inline-block;
            position: relative;
            animation: formulaPulse 4s ease-in-out infinite;
        }

        .monte-carlo-formula .mc-symbol {
            display: inline-block;
            font-style: italic;
            font-weight: 600;
            animation: symbolDyslexia 3s ease-in-out infinite;
        }

        .monte-carlo-formula .mc-subscript {
            font-size: 0.6em;
            vertical-align: sub;
            animation: subscriptFloat 3.5s ease-in-out infinite;
        }

        .monte-carlo-formula .mc-paren {
            display: inline-block;
            animation: parenBreathe 4s ease-in-out infinite;
        }

        .monte-carlo-formula .mc-arrow {
            display: inline-block;
            animation: arrowGlow 3s ease-in-out infinite;
        }

        .monte-carlo-formula .mc-integral {
            display: inline-block;
            font-size: 1.4em;
            vertical-align: middle;
            animation: integralPulse 4.5s ease-in-out infinite;
        }

        .symbol-1 { animation-delay: 0s; }
        .symbol-2 { animation-delay: 0.3s; }
        .symbol-3 { animation-delay: 0.6s; }
        .symbol-4 { animation-delay: 0.9s; }

        @keyframes formulaPulse {
            0%, 100% { 
                transform: scale(1);
                opacity: 1;
                filter: blur(0px);
            }
            50% { 
                transform: scale(1.02);
                opacity: 0.92;
                filter: blur(0px);
            }
        }

        @keyframes symbolDyslexia {
            0%, 100% { 
                transform: translateX(0) rotate(0deg);
                opacity: 1;
                text-shadow: 0 0 0 rgba(255,255,255,0);
            }
            25% { 
                transform: translateX(-1px) rotate(-1deg);
                opacity: 0.85;
                text-shadow: 0 0 8px rgba(255,255,255,0.3);
            }
            50% { 
                transform: translateX(1px) rotate(1deg);
                opacity: 0.9;
                text-shadow: 0 0 12px rgba(255,255,255,0.5);
            }
            75% { 
                transform: translateX(-0.5px) rotate(-0.5deg);
                opacity: 0.95;
                text-shadow: 0 0 6px rgba(255,255,255,0.2);
            }
        }

        @keyframes subscriptFloat {
            0%, 100% { 
                transform: translateY(0);
                opacity: 1;
            }
            50% { 
                transform: translateY(-2px);
                opacity: 0.7;
            }
        }

        @keyframes parenBreathe {
            0%, 100% { 
                transform: scaleX(1);
                opacity: 1;
            }
            50% { 
                transform: scaleX(1.05);
                opacity: 0.8;
            }
        }

        @keyframes arrowGlow {
            0%, 100% { 
                opacity: 1;
                text-shadow: 0 0 0 rgba(255,255,255,0);
            }
            50% { 
                opacity: 0.6;
                text-shadow: 0 0 20px rgba(255,255,255,0.8), 0 0 40px rgba(255,255,255,0.4);
            }
        }

        @keyframes integralPulse {
            0%, 100% { 
                transform: scaleY(1);
                opacity: 1;
            }
            50% { 
                transform: scaleY(1.08);
                opacity: 0.75;
            }
        }

        @media (max-width: 768px) {
            .monte-carlo-formula {
                font-size: 1.5rem;
            }
            .monte-carlo-formula-container {
                margin-top: 40px;
                padding: 20px 10px;
            }
        }

        /* Container */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 100px 20px;
        }

        /* Section Headers */
        .section-header {
            text-align: center;
            margin-bottom: 70px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(91, 79, 207, 0.1);
            border: 1px solid rgba(91, 79, 207, 0.18);
            border-radius: 20px;
            color: #4a3fb8;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 650px;
            margin: 0 auto;
            line-height: 1.8;
        }

        /* Services Grid */
        .services-section {
            position: relative;
            background-image: url('/ainna/data/strategic-advantage-bg.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            padding: 100px 20px;
        }

        .services-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.85);
            pointer-events: none;
        }

        .services-section .section-header,
        .services-section .services-grid {
            position: relative;
            z-index: 1;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
            gap: 32px;
            margin-bottom: 100px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 20px;
            padding: 40px;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent-gradient);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
            border-color: var(--accent-primary);
        }

        .service-card:hover::before {
            transform: scaleX(1);
        }

        .service-icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, rgba(110, 110, 115, 0.1) 0%, rgba(134, 134, 139, 0.1) 100%);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            margin-bottom: 24px;
        }

        .service-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .service-card p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .service-features {
            list-style: none;
        }

        .service-features li {
            padding: 10px 0;
            color: var(--text-secondary);
            font-size: 0.95rem;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            border-bottom: 1px solid var(--border-light);
        }

        .service-features li:last-child {
            border-bottom: none;
        }

        .service-features li::before {
            content: '✓';
            color: #5b4fcf;
            font-weight: 700;
            flex-shrink: 0;
        }

        /* Tech Stack Section */
        .tech-section {
            background: var(--bg-secondary);
            padding: 100px 20px;
        }

        .tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .tech-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 16px;
            padding: 32px;
            transition: all 0.3s ease;
        }

        .tech-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .tech-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .tech-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .tech-badge {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(91, 79, 207, 0.1);
            border: 1px solid rgba(91, 79, 207, 0.18);
            border-radius: 6px;
            color: #4a3fb8;
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 12px;
        }

        /* Use Cases */
        .use-cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin-top: 60px;
        }

        .use-case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 16px;
            padding: 28px;
            transition: all 0.3s ease;
        }

        .use-case-card:hover {
            border-color: var(--accent-primary);
            box-shadow: var(--shadow-md);
        }

        .use-case-icon {
            font-size: 36px;
            margin-bottom: 16px;
        }

        .use-case-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .use-case-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Contact Form */
        .contact-form-wrapper {
            max-width: 700px;
            margin: 0 auto;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--shadow-md);
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            padding: 14px 18px;
            border: 1px solid var(--border-light);
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            color: var(--text-primary);
            background: var(--bg-primary);
            transition: all 0.3s ease;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: #636366;
            opacity: 1;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 3px rgba(110, 110, 115, 0.1);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 120px;
        }

        .checkbox-group {
            flex-direction: row;
            align-items: center;
        }

        .checkbox-group input[type="checkbox"] {
            width: 20px;
            height: 20px;
            margin-right: 10px;
            cursor: pointer;
        }

        .checkbox-group label {
            display: flex;
            align-items: center;
            font-size: 0.9rem;
            color: #3a3a3c;
            cursor: pointer;
        }

        .btn-submit {
            margin-top: 10px;
            width: 100%;
            justify-content: center;
        }

        @media (max-width: 600px) {
            .form-row {
                grid-template-columns: 1fr;
            }
            
            .contact-form-wrapper {
                padding: 24px;
            }
        }

        /* Animated Counter */
        .stat-value {
            transition: all 0.3s ease;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #1d1d1f 0%, #2d2d2f 100%);
            padding: 100px 20px;
            text-align: center;
            margin-top: 100px;
            position: relative;
            overflow: hidden;
        }
        
        .cta-section::before {
            content: '∫ ∮ ∇ ∂ ∞';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 15vw;
            font-family: 'Times New Roman', serif;
            color: rgba(255,255,255,0.02);
            letter-spacing: 0.2em;
            white-space: nowrap;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 2.5rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: #a1a1a6;
            max-width: 600px;
            margin: 0 auto 40px;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn {
            padding: 16px 32px;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #6e6e73 0%, #86868b 100%);
            color: #ffffff;
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(110, 110, 115, 0.4);
        }

        .btn-secondary {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .btn-secondary:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.1);
        }

        /* Footer */
        footer {
            background: var(--bg-secondary);
            padding: 60px 20px 40px;
            border-top: 1px solid var(--border-light);
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* Math Formula Display */
        .formula-box {
            background: var(--bg-secondary);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            padding: 20px 24px;
            margin: 16px 0;
            text-align: center;
            font-family: 'Times New Roman', serif;
            font-size: 1.3rem;
            color: var(--text-primary);
        }

        /* Card Entrance Animations */
        .animate-card {
            opacity: 1 !important;
            transform: translateY(0) !important;
            opacity: 1 !important;
            transform: translateY(0) !important;
            opacity: 1 !important;
            transform: translateY(0) !important;
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        
        .animate-card.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .animate-card:nth-child(1) { transition-delay: 0s; }
        .animate-card:nth-child(2) { transition-delay: 0.1s; }
        .animate-card:nth-child(3) { transition-delay: 0.2s; }
        .animate-card:nth-child(4) { transition-delay: 0.3s; }
        .animate-card:nth-child(5) { transition-delay: 0.4s; }
        .animate-card:nth-child(6) { transition-delay: 0.5s; }
        .animate-card:nth-child(7) { transition-delay: 0.6s; }
        .animate-card:nth-child(8) { transition-delay: 0.7s; }
        .animate-card:nth-child(9) { transition-delay: 0.8s; }
        .animate-card:nth-child(10) { transition-delay: 0.9s; }
        .animate-card:nth-child(11) { transition-delay: 1.0s; }

        /* Responsive */
        @media (max-width: 768px) {
            .hero { padding: 80px 20px 60px; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1.05rem; }
            .hero-stats { gap: 30px; }
            .stat-value { font-size: 2.2rem; }
            .section-header h2 { font-size: 2rem; }
            .services-grid { grid-template-columns: 1fr; }
            .container { padding: 60px 20px; }
            .hero::after { font-size: 30vw; }
        }

        /* Hero Background Image */
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            overflow: hidden;
        }
        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-bg video {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.7) 100%);
            z-index: 1;
        }
        .hero-content {
            z-index: 2 !important;
        }
        .hero .hero-content,
        .hero .hero-content h1,
        .hero .hero-content p,
        .hero .hero-badge,
        .hero .stat-value,
        .hero .stat-label {
            color: #ffffff !important;
        }
        .hero .hero-badge {
            background: rgba(255,255,255,0.12) !important;
            border-color: rgba(255,255,255,0.3) !important;
        }
        .hero .hero-content h1 span {
            background: linear-gradient(135deg, #ffffff 0%, #e0e0ff 100%) !important;
            -webkit-background-clip: text !important;
            -webkit-text-fill-color: transparent !important;
            background-clip: text !important;
        }
        .hero .stat-label {
            opacity: 0.8;
        }

        /* Day Mode - LIGHT (hero text stays white over video) */
        body:not(.night-mode) .hero:has(.hero-bg) {
            background: transparent !important;
        }
        body:not(.night-mode) .stat-value {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
            -webkit-background-clip: text !important;
            -webkit-text-fill-color: transparent !important;
        }
        body:not(.night-mode) .hero:has(.hero-bg) .stat-value {
            background: linear-gradient(135deg, #ffffff 0%, #e0e0ff 100%) !important;
            -webkit-background-clip: text !important;
            -webkit-text-fill-color: transparent !important;
        }
        body .stat-label { color: #68686d !important; }
        body .hero:has(.hero-bg) .stat-label { color: rgba(255,255,255,0.8) !important; }
        body .service-card { background: #ffffff !important; border-color: #e8e8ed !important; }
        body .service-card h3 { color: #1d1d1f !important; }
        body .service-card p { color: #424245 !important; }

        /* Theme Toggle Button */
        #themeToggle {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 2147483640;
            background: var(--bg-card);
            border: 2px solid var(--border-light);
            border-radius: 50px;
            padding: 10px 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: all 0.3s ease;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            box-shadow: var(--shadow-md);
        }
        
        #themeToggle:hover {
            transform: scale(1.05);
            box-shadow: var(--shadow-lg);
        }
        
        #themeToggle .toggle-icon {
            font-size: 1.3rem;
        }
        
        #themeToggle .toggle-text {
            font-size: 0.85rem;
            font-weight: 600;
        }
        
        /* Night Mode: Toggle Button High Contrast */
        body.night-mode #themeToggle {
            background: #1a1a2e;
            border-color: #00d9ff;
            color: #ffffff;
            box-shadow: 0 0 20px rgba(0,217,255,0.3);
        }
        
        /* Day Mode: Toggle Button */
        body:not(.night-mode) #themeToggle {
            background: #ffffff;
            border-color: #d2d2d7;
            color: #1d1d1f;
        }

        /* Night Mode Variables */
        body.night-mode {
            --bg-primary: #050508 !important;
            --bg-secondary: #0a0a12 !important;
            --bg-tertiary: #12121f !important;
            --bg-card: #0f0f1a !important;
            --text-primary: #ffffff !important;
            --text-secondary: #d0d0e0 !important;
            --text-muted: #9090a8 !important;
            --accent-primary: #00ffff !important;
            --accent-secondary: #ff00ff !important;
            --accent-gradient: linear-gradient(135deg, #00ffff 0%, #ff00ff 100%) !important;
            --border-light: #1a1a2e !important;
            --border-medium: #2a2a3f !important;
            --shadow-sm: 0 2px 8px rgba(0,255,255,0.15) !important;
            --shadow-md: 0 4px 16px rgba(0,255,255,0.2) !important;
            --shadow-lg: 0 8px 32px rgba(0,255,255,0.3) !important;
            --shadow-xl: 0 12px 48px rgba(0,255,255,0.4) !important;
            --math-symbol: #00ffff !important;
            --neon-blue: #00ffff !important;
            --neon-pink: #ff00ff !important;
            --neon-purple: #bf00ff !important;
        }

        /* Night Mode - COMPLETE OVERRIDES */
        body.night-mode {
            background: #050508 !important;
        }
        
        body.night-mode body,
        body.night-mode html {
            background-color: #050508 !important;
        }
        
        body.night-mode .hero:has(.hero-bg) {
            background: transparent !important;
        }
        
        body.night-mode .hero h1 {
            color: #ffffff !important;
        }
        
        body.night-mode .hero h1 span {
            background: linear-gradient(135deg, #00ffff 0%, #ff00ff 100%) !important;
            -webkit-background-clip: text !important;
            -webkit-text-fill-color: transparent !important;
            background-clip: text !important;
            color: #ffffff !important;
            text-shadow: 0 0 40px rgba(0,255,255,0.5) !important;
        }
        
        body.night-mode .hero p {
            color: #e0e0e0 !important;
        }
        
        body.night-mode .hero-badge {
            color: #00ffff !important;
            background: rgba(0,255,255,0.1) !important;
            border-color: rgba(0,255,255,0.4) !important;
        }
        
        body.night-mode .stat-value {
            background: linear-gradient(135deg, #00ffff 0%, #ff00ff 100%) !important;
            -webkit-background-clip: text !important;
            -webkit-text-fill-color: transparent !important;
            background-clip: text !important;
            color: #00ffff !important;
            text-shadow: 0 0 30px rgba(0,255,255,0.6) !important;
        }
        
        body.night-mode .stat-label {
            color: #a0a0c0 !important;
        }
        
        body.night-mode .section-header h2 {
            color: #ffffff !important;
        }
        
        body.night-mode .section-header p {
            color: #c0c0d0 !important;
        }
        
        body.night-mode .section-tag {
            color: #00ffff !important;
            background: rgba(0,255,255,0.08) !important;
        }
        
        body.night-mode .service-card {
            background: #0f0f1a !important;
            border: 1px solid rgba(0,255,255,0.25) !important;
            box-shadow: 0 4px 20px rgba(0,255,255,0.15) !important;
        }
        
        body.night-mode .service-card:hover {
            border-color: #00ffff !important;
            box-shadow: 0 8px 40px rgba(0,255,255,0.3) !important;
            transform: translateY(-6px) !important;
        }
        
        body.night-mode .service-card h3 {
            color: #ffffff !important;
        }
        
        body.night-mode .service-card p,
        body.night-mode .service-card li {
            color: #d0d0e0 !important;
        }
        
        body.night-mode .service-card .math-symbol {
            color: #00ffff !important;
        }
        
        body.night-mode .service-icon {
            background: linear-gradient(135deg, rgba(0,255,255,0.15) 0%, rgba(255,0,255,0.15) 100%) !important;
        }
        
        body.night-mode .service-icon svg {
            stroke: #00ffff !important;
            filter: drop-shadow(0 0 10px rgba(0,255,255,0.6)) !important;
        }
        
        body.night-mode .tech-section {
            background: #0a0a12 !important;
        }
        
        body.night-mode .tech-card {
            background: #0f0f1a !important;
            border: 1px solid rgba(0,255,255,0.2) !important;
        }
        
        body.night-mode .tech-card:hover {
            border-color: #00ffff !important;
            box-shadow: 0 6px 30px rgba(0,255,255,0.25) !important;
        }
        
        body.night-mode .tech-card h4 {
            color: #ffffff !important;
        }
        
        body.night-mode .tech-card p {
            color: #b8b8c8 !important;
        }
        
        body.night-mode .tech-card svg {
            stroke: #00ffff !important;
            filter: drop-shadow(0 0 8px rgba(0,255,255,0.5)) !important;
        }
        
        body.night-mode .tech-badge {
            color: #00ffff !important;
            background: rgba(0,255,255,0.1) !important;
            border: 1px solid rgba(0,255,255,0.3) !important;
        }
        
        body.night-mode .formula-box {
            background: rgba(15,15,30,0.7) !important;
            border: 1px solid rgba(0,255,255,0.3) !important;
            color: #ffffff !important;
            box-shadow: 0 4px 15px rgba(0,255,255,0.15) !important;
        }
        
        body.night-mode .formula-box strong {
            color: #00ffff !important;
        }
        
        body.night-mode .formula-box .math-symbol {
            color: #ff00ff !important;
            text-shadow: 0 0 15px rgba(255,0,255,0.5) !important;
        }
        
        body.night-mode .use-case-card {
            background: #0f0f1a !important;
            border: 1px solid rgba(0,255,255,0.2) !important;
        }
        
        body.night-mode .use-case-card:hover {
            border-color: #00ffff !important;
            box-shadow: 0 4px 20px rgba(0,255,255,0.2) !important;
        }
        
        body.night-mode .use-case-card h4 {
            color: #ffffff !important;
        }
        
        body.night-mode .use-case-card p {
            color: #b8b8c8 !important;
        }
        
        body.night-mode .use-case-card svg {
            stroke: #00ffff !important;
        }
        
        body.night-mode .contact-form-wrapper {
            background: rgba(15,15,26,0.95) !important;
            border: 1px solid rgba(0,255,255,0.25) !important;
            box-shadow: 0 8px 40px rgba(0,255,255,0.2) !important;
        }
        
        body.night-mode .form-group label {
            color: #ffffff !important;
        }
        
        body.night-mode .form-group input,
        body.night-mode .form-group select,
        body.night-mode .form-group textarea {
            background: rgba(10,10,20,0.8) !important;
            border: 1px solid rgba(0,255,255,0.3) !important;
            color: #ffffff !important;
        }
        
        body.night-mode .form-group input:focus,
        body.night-mode .form-group select:focus,
        body.night-mode .form-group textarea:focus {
            border-color: #00ffff !important;
            box-shadow: 0 0 20px rgba(0,255,255,0.3) !important;
            outline: none !important;
        }
        
        body.night-mode button[type="submit"] {
            background: linear-gradient(135deg, #00ffff 0%, #00cccc 100%) !important;
            color: #050508 !important;
            font-weight: 700 !important;
            border: none !important;
            box-shadow: 0 4px 20px rgba(0,255,255,0.4) !important;
        }
        
        body.night-mode button[type="submit"]:hover {
            box-shadow: 0 6px 30px rgba(0,255,255,0.6) !important;
            transform: translateY(-2px) !important;
        }
        
        body.night-mode .monte-carlo-formula {
            color: #00ffff !important;
            text-shadow: 0 0 20px rgba(0,255,255,0.5) !important;
        }
        
        body.night-mode .monte-carlo-formula .mc-symbol {
            color: #ff00ff !important;
            text-shadow: 0 0 15px rgba(255,0,255,0.6) !important;
        }
        /* Old styles removed - replaced by complete night mode overrides above */
        
        /* Night Mode: Service Cards Text */
        body.night-mode .service-card h3 {
            color: #ffffff !important;
        }
        body.night-mode .service-card p,
        body.night-mode .service-card li {
            color: #d0d0e0 !important;
        }
        body.night-mode .service-card .math-symbol {
            color: #00ffff !important;
        }
        
        /* Night Mode: Tech Cards */
        body.night-mode .tech-card h4 {
            color: #ffffff !important;
        }
        body.night-mode .tech-card p {
            color: #b8b8c8 !important;
        }
        body.night-mode .tech-badge {
            color: #00ffff !important;
            background: rgba(0,255,255,0.1) !important;
            border: 1px solid rgba(0,255,255,0.3) !important;
        }
        
        /* Night Mode: Use Case Cards */
        body.night-mode .use-case-card h4 {
            color: #ffffff !important;
        }
        body.night-mode .use-case-card p {
            color: #b8b8c8 !important;
        }
        
        /* Night Mode: Formula Boxes */
        body.night-mode .formula-box {
            background: rgba(15,15,30,0.7) !important;
            border: 1px solid rgba(0,255,255,0.3) !important;
            color: #ffffff !important;
            box-shadow: 0 4px 15px rgba(0,255,255,0.15) !important;
        }
        body.night-mode .formula-box strong {
            color: #00ffff !important;
        }
        body.night-mode .formula-box .math-symbol {
            color: #ff00ff !important;
            text-shadow: 0 0 15px rgba(255,0,255,0.5) !important;
        }
        
        /* Night Mode: Contact Form */
        body.night-mode .contact-form-wrapper {
            background: rgba(15,15,26,0.95) !important;
            border: 1px solid rgba(0,255,255,0.25) !important;
            box-shadow: 0 8px 40px rgba(0,255,255,0.2) !important;
        }
        body.night-mode .form-group label {
            color: #ffffff !important;
        }
        body.night-mode .form-group input,
        body.night-mode .form-group select,
        body.night-mode .form-group textarea {
            background: rgba(10,10,20,0.8) !important;
            border: 1px solid rgba(0,255,255,0.3) !important;
            color: #ffffff !important;
        }
        body.night-mode .form-group input:focus,
        body.night-mode .form-group select:focus,
        body.night-mode .form-group textarea:focus {
            border-color: #00ffff !important;
            box-shadow: 0 0 20px rgba(0,255,255,0.3) !important;
            outline: none !important;
        }
        
        /* Night Mode: Buttons */
        body.night-mode button[type="submit"] {
            background: linear-gradient(135deg, #00ffff 0%, #00cccc 100%) !important;
            color: #050508 !important;
            font-weight: 700 !important;
            border: none !important;
            box-shadow: 0 4px 20px rgba(0,255,255,0.4) !important;
        }
        
        body.night-mode button[type="submit"]:hover {
            box-shadow: 0 6px 30px rgba(0,255,255,0.6) !important;
            transform: translateY(-2px) !important;
        }
        
        body.night-mode .monte-carlo-formula {
            color: #00ffff !important;
            text-shadow: 0 0 20px rgba(0,255,255,0.5) !important;
        }
        
        body.night-mode .monte-carlo-formula .mc-symbol {
            color: #ff00ff !important;
            text-shadow: 0 0 15px rgba(255,0,255,0.6) !important;
        }

        /* Pastel Header in Day Mode */
        body:not(.night-mode) .hero h1 span {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;

            background-clip: text;
        }
        body:not(.night-mode) .stat-value {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* Contrast fixes — hero video wording */
        .hero:has(.hero-bg) .monte-carlo-formula {
            color: rgba(255, 255, 255, 0.95) !important;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.45);
        }
        .hero:has(.hero-bg) .monte-carlo-formula .mc-symbol,
        .hero:has(.hero-bg) .monte-carlo-formula .mc-subscript,
        .hero:has(.hero-bg) .monte-carlo-formula .mc-paren,
        .hero:has(.hero-bg) .monte-carlo-formula .mc-arrow,
        .hero:has(.hero-bg) .monte-carlo-formula .mc-integral {
            color: rgba(255, 255, 255, 0.95) !important;
        }
        .hero:has(.hero-bg) .stat-label {
            color: rgba(255, 255, 255, 0.92) !important;
        }
        body.night-mode .hero:has(.hero-bg) .monte-carlo-formula {
            color: #7ee8ff !important;
            text-shadow: 0 0 16px rgba(0, 255, 255, 0.35);
        }
        body.night-mode .hero:has(.hero-bg) .monte-carlo-formula .mc-symbol,
        body.night-mode .hero:has(.hero-bg) .monte-carlo-formula .mc-subscript,
        body.night-mode .hero:has(.hero-bg) .monte-carlo-formula .mc-paren,
        body.night-mode .hero:has(.hero-bg) .monte-carlo-formula .mc-arrow,
        body.night-mode .hero:has(.hero-bg) .monte-carlo-formula .mc-integral {
            color: #c77dff !important;
        }

        /* Contrast fixes — services section night overlay */
        body.night-mode .services-section::before {
            background: rgba(5, 5, 12, 0.9) !important;
        }
        body.night-mode .services-section .section-header h2 {
            color: #ffffff !important;
        }
        body.night-mode .services-section .section-header p {
            color: #d8d8e8 !important;
        }
        body.night-mode .services-section .section-tag {
            color: #7ee8ff !important;
            background: rgba(0, 255, 255, 0.12) !important;
            border-color: rgba(0, 255, 255, 0.28) !important;
        }

        /* Contrast fixes — day mode section headers & cards */
        body:not(.night-mode) .section-header h2 {
            color: #1d1d1f;
        }
        body:not(.night-mode) .section-header p {
            color: #3a3a3c;
        }
        body:not(.night-mode) .service-card li,
        body:not(.night-mode) .use-case-card p,
        body:not(.night-mode) .tech-card p {
            color: #3a3a3c !important;
        }
        body:not(.night-mode) .math-symbol {
            color: #4338ca;
        }

        /* Contrast fixes — night mode form & CTA */
        body.night-mode .checkbox-group label,
        body.night-mode .checkbox-group label span {
            color: #d8d8e8 !important;
        }
        body.night-mode .form-group input::placeholder,
        body.night-mode .form-group textarea::placeholder {
            color: #9aa0b8 !important;
        }
        body.night-mode .cta-section p {
            color: #d0d0e0 !important;
        }
        body.night-mode .use-case-card .math-symbol,
        body.night-mode .service-card .math-symbol {
            color: #66e8ff !important;
        }

        /* Footer: support night-mode class */
        body.night-mode .ainna-page-footer,
        body.night-mode .ainna-page-footer-strip {
            --footer-text: #f1f5f9;
            --footer-text-muted: #94a3b8;
            --footer-link: #60a5fa;
            --footer-link-hover: #93c5fd;
            --footer-border: rgba(255, 255, 255, 0.12);
            --footer-bg: rgba(15, 23, 42, 0.92);
        }
    
/* Hero background pan + zoom */
.hero-bg,
.hero-background {
  overflow: hidden;
}
.hero-bg img,
.hero-background img {
  animation: heroPanZoom 24s ease-in-out alternate;
  transform-origin: center;
  will-change: transform;
}
@keyframes heroPanZoom {
  0% { transform: scale(1) translate3d(0,0,0); }
  50% { transform: scale(1.10) translate3d(-1.5%, 1%, 0); }
  100% { transform: scale(1.16) translate3d(1.5%, -1%, 0); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-bg img,
  .hero-background img {
    animation: none !important;
    transform: none !important;
  }
}
/* Reduce overlay darkness */
.hero-overlay {
  background: rgba(0,0,0,0.4) !important;
}