:root {
            --accent-color: #00ff88;
            --gradient: linear-gradient(135deg, #00ff88 0%, #00ccff 100%);
        }

        html[data-theme='light'] {
            --primary-color: #ffffff;
            --secondary-color: #f0f0f0;
            --text-primary: #0a0a0a;
            --text-secondary: #505050;
        }

        html[data-theme='dark'] {
            --primary-color: #0a0a0a;
            --secondary-color: #1a1a1a;
            --text-primary: #ffffff;
            --text-secondary: #b0b0b0;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--primary-color);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        header {
            padding: 2rem 0;
            position: relative;
            z-index: 100;
        }

        .logo {
            font-size: 2rem;
            font-weight: 700;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
        }

        .logo a {
            text-decoration: none;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero {
            min-height: 80vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 50% 50%, rgba(0, 255, 136, 0.1) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-content {
            max-width: 800px;
            z-index: 10;
            position: relative;
        }

        .hero h1 {
            font-size: clamp(3rem, 8vw, 6rem);
            font-weight: 900;
            margin-bottom: 1.5rem;
            line-height: 1.1;
            letter-spacing: -0.04em;
        }

        .hero .tagline {
            font-size: 1.5rem;
            color: var(--text-secondary);
            margin-bottom: 3rem;
            font-weight: 300;
        }

        .stealth-message {
            background: var(--secondary-color);
            border-radius: 16px;
            padding: 2rem;
            margin: 3rem auto;
            border: 1px solid rgba(0, 255, 136, 0.2);
            position: relative;
            overflow: hidden;
            max-width: 800px;
        }

        .stealth-message::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
            animation: shimmer 3s infinite;
        }

        @keyframes shimmer {
            0% { left: -100%; }
            100% { left: 100%; }
        }

        .stealth-message h2 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--accent-color);
        }

        .stealth-message p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .principles {
            margin: 4rem 0;
        }

        .principle-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            grid-template-rows: auto auto;
            gap: 2rem;
        }

        .principle-large {
            grid-row: 1 / 3;
            background: var(--secondary-color);
            padding: 3rem;
            border-radius: 16px;
            border: 1px solid rgba(0, 255, 136, 0.2);
        }

        .principle-large h2 {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            color: var(--accent-color);
        }

        .principle-large ul {
            margin-top: 1.5rem;
            padding-left: 1.5rem;
        }

        .principle-large li {
            margin-bottom: 0.5rem;
            color: var(--text-secondary);
        }

        .principle-small {
            background: var(--secondary-color);
            padding: 2rem;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .principle-small h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--accent-color);
        }

        @media (max-width: 768px) {
            .principle-grid {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }
            
            .principle-large {
                grid-row: auto;
            }
        }

        .themes {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin: 4rem 0;
        }

        .theme-card {
            background: var(--secondary-color);
            padding: 2rem;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: transform 0.3s ease, border-color 0.3s ease;
            position: relative;
        }

        .theme-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-color);
        }

        .theme-card h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: var(--accent-color);
        }

        .theme-card p {
            color: var(--text-secondary);
        }

        .cta {
            text-align: center;
            margin: 4rem 0;
        }

        .email-signup {
            display: inline-flex;
            background: var(--secondary-color);
            border-radius: 50px;
            padding: 0.5rem;
            border: 1px solid rgba(0, 255, 136, 0.3);
            max-width: 400px;
            width: 100%;
        }

        .email-signup input {
            flex: 1;
            background: transparent;
            border: none;
            padding: 1rem 1.5rem;
            color: var(--text-primary);
            font-size: 1rem;
            outline: none;
        }

        .email-signup input::placeholder {
            color: var(--text-secondary);
        }

        .email-signup button {
            background: var(--gradient);
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            color: var(--primary-color);
            font-weight: 600;
            cursor: pointer;
            transition: opacity 0.3s ease;
        }

        .email-signup button:hover {
            opacity: 0.9;
        }

        footer {
            text-align: center;
            padding: 3rem 0;
            color: var(--text-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 4rem;
        }

        footer a {
            color: var(--accent-color);
            text-decoration: none;
        }

        footer a:hover {
            text-decoration: underline;
        }

        .matrix {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: -1;
            opacity: 0.1;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
            
            .themes {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            
            .email-signup {
                flex-direction: column;
                align-items: stretch;
            }
            
            .email-signup button {
                margin-top: 0.5rem;
            }
        }

        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            animation: fadeInUp 1s ease forwards;
        }

        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .delay-1 { animation-delay: 0.2s; }
        .delay-2 { animation-delay: 0.4s; }
        .delay-3 { animation-delay: 0.6s; }

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

        .left-section {
            display: flex;
            align-items: center;
            gap: 2rem;
        }

        nav {
            display: flex;
            align-items: center;
        }

        .dropdown {
            position: relative;
            display: inline-block;
        }

        .dropdown-btn {
            background: transparent;
            border: 1px solid var(--accent-color);
            color: var(--text-primary);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s ease;
        }

        .dropdown-btn:hover {
            background: rgba(0, 255, 136, 0.1);
        }

        .dropdown-content {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            background: var(--secondary-color);
            border: 1px solid var(--accent-color);
            border-radius: 8px;
            min-width: 180px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            z-index: 1000;
            margin-top: 0.5rem;
        }

        .dropdown-content::before {
            content: '';
            position: absolute;
            top: -0.5rem;
            left: 0;
            right: 0;
            height: 0.5rem;
            background: transparent;
        }

        .dropdown:hover .dropdown-content,
        .dropdown-content:hover {
            display: block;
        }

        .dropdown-content a {
            display: block;
            padding: 0.75rem 1rem;
            color: var(--text-primary);
            text-decoration: none;
            transition: background-color 0.3s ease;
        }

        .dropdown-content a:hover {
            background: rgba(0, 255, 136, 0.1);
        }

        .dropdown-content a:first-child {
            border-radius: 8px 8px 0 0;
        }

        .dropdown-content a:last-child {
            border-radius: 0 0 8px 8px;
        }

        .features {
            margin: 4rem 0;
        }

        .feature-intro {
            text-align: center;
            margin-bottom: 3rem;
        }

        .feature-intro h2 {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        .feature-item {
            background: var(--secondary-color);
            padding: 2.5rem;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-left: 4px solid var(--accent-color);
        }

        .feature-item h3 {
            font-size: 1.4rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .feature-stats {
            margin-top: 1rem;
            display: flex;
            gap: 2rem;
        }

        .feature-stats span {
            background: rgba(0, 255, 136, 0.1);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.9rem;
            color: var(--accent-color);
            font-weight: 600;
        }

        .feature-note {
            margin-top: 1rem;
            padding: 1rem;
            background: rgba(0, 255, 136, 0.05);
            border-radius: 8px;
            border-left: 3px solid var(--accent-color);
        }

        .feature-note em {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .use-cases {
            margin: 4rem 0;
        }

        .use-cases h2 {
            text-align: center;
            font-size: 2rem;
            margin-bottom: 2rem;
            color: var(--text-primary);
        }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .use-case {
            background: var(--secondary-color);
            padding: 2rem;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .use-case h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: var(--accent-color);
        }

        .case-example {
            margin-top: 1.5rem;
            padding: 1rem;
            background: rgba(0, 255, 136, 0.05);
            border-radius: 8px;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .case-example strong {
            color: var(--accent-color);
        }

        .enterprise-details {
            margin: 4rem 0;
        }

        .enterprise-intro {
            text-align: center;
            margin-bottom: 3rem;
        }

        .enterprise-intro h2 {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .enterprise-features {
            display: flex;
            flex-direction: column;
            gap: 3rem;
        }

        .feature-section {
            background: var(--secondary-color);
            padding: 2.5rem;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .feature-section h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--accent-color);
        }

        .feature-details {
            margin-top: 1.5rem;
            padding: 1rem;
            background: rgba(0, 255, 136, 0.05);
            border-radius: 8px;
            border-left: 3px solid var(--accent-color);
        }

        .feature-details strong {
            color: var(--accent-color);
        }

        .integration-list {
            margin-top: 1.5rem;
        }

        .integration-list ul {
            list-style: none;
            padding: 0;
        }

        .integration-list li {
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
        }

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

        .compliance-note {
            margin-top: 1rem;
            padding: 1rem;
            background: rgba(0, 255, 136, 0.05);
            border-radius: 8px;
            font-style: italic;
            color: var(--text-secondary);
        }

        #theme-switcher {
            background: var(--secondary-color);
            border: 1px solid var(--accent-color);
            color: var(--text-primary);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            cursor: pointer;
        }

        html[data-theme='dark'] .iframe-container {
            filter: invert(1) hue-rotate(180deg);
        }

        .iframe-container {
            pointer-events: none;
        }