.architecture-hero {
            padding: 150px 0 80px;
            text-align: center;
            background: linear-gradient(135deg, rgba(7,17,31,1) 0%, rgba(17,29,47,1) 100%);
            color: white;
            position: relative;
            overflow: hidden;
        }
        .architecture-hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(circle at center, rgba(50,140,193,0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .architecture-tag {
            display: inline-block;
            padding: 8px 16px;
            background: rgba(50,140,193,0.2);
            color: var(--secondary-color);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 2px;
            margin-bottom: 20px;
            border: 1px solid rgba(50,140,193,0.4);
        }
        .architecture-hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #fff, #b3e5fc);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .architecture-hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
            color: #a0b2c6;
            line-height: 1.6;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 50px;
            color: var(--text-main);
        }

        .architecture-stack-section {
            padding: 100px 0;
            background: var(--bg-color);
        }
        .architecture-stack {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 15px;
            max-width: 800px;
            margin: 0 auto;
        }
        .stack-layer {
            width: 100%;
            padding: 25px;
            border-radius: 16px;
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            border: 1px solid var(--card-border);
            text-align: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-main);
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .stack-layer span {
            display: block;
            font-size: 0.9rem;
            font-weight: 400;
            color: var(--text-muted);
            margin-top: 10px;
            letter-spacing: 1px;
        }
        .stack-layer:hover {
            transform: scale(1.02);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        
        .enterprise-layer { border-left: 5px solid #9b59b6; }
        .cloud-layer { border-left: 5px solid #3498db; }
        .mes-layer { border-left: 5px solid #2ecc71; }
        .ai-layer { border-left: 5px solid var(--secondary-color); }
        .twin-layer { border-left: 5px solid #e84393; }
        .data-layer { border-left: 5px solid #f1c40f; }
        .protocol-layer { border-left: 5px solid #e67e22; }
        .edge-layer { border-left: 5px solid #e74c3c; }
        .machine-layer { border-left: 5px solid #7f8c8d; }

        .stack-arrow {
            font-size: 2rem;
            color: var(--secondary-color);
            opacity: 0.5;
            animation: arrowBounce 2s infinite;
        }

        @keyframes arrowBounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(5px); }
        }

        .deployment-section {
            padding: 100px 0;
            background: var(--bg-color);
        }
        .deployment-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .deployment-card {
            background: var(--card-bg);
            padding: 40px 30px;
            border-radius: 20px;
            border: 1px solid var(--card-border);
            text-align: center;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
        }
        .deployment-card:hover {
            transform: translateY(-10px);
            border-color: var(--primary-color);
        }
        .deployment-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--text-main);
        }
        .deployment-card p {
            color: var(--text-muted);
            line-height: 1.6;
        }

        .security-section {
            padding: 100px 0;
            background: linear-gradient(135deg, #0b1424 0%, #111d2f 100%);
            color: white;
        }
        .security-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }
        .security-grid div {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            padding: 20px;
            border-radius: 12px;
            text-align: center;
            font-weight: 600;
            color: #eaf4ff;
            transition: background 0.3s ease;
        }
        .security-grid div:hover {
            background: rgba(50,140,193,0.2);
            border-color: rgba(50,140,193,0.5);
        }

        .cta {
            padding: 100px 0;
            text-align: center;
            background: var(--bg-color);
        }
        .cta h2 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--text-main);
        }
        .cta p {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 40px;
        }
        .btn-primary {
            display: inline-block;
            padding: 15px 40px;
            background: var(--primary-color);
            color: white;
            border-radius: 14px;
            min-height: 48px;
            font-size: 1.1rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 10px 20px rgba(0, 100, 255, 0.3);
        }
        .btn-primary:hover {
            background: #0056e0;
            transform: translateY(-2px);
            color: white;
        }

        @media (max-width: 575.98px) {
            .architecture-hero h1 { font-size: 2.25rem; }
        }