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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #ffffff;
        }

        /* Header Styles */
            header {
                    background: rgba(255, 255, 255, 0.95);
                    backdrop-filter: blur(10px);
                    position: fixed;
                    top: 0;
                    width: 100%;
                    z-index: 1000;
                    padding: 1rem 0;
                    box-shadow: 0 2px 20px rgba(93, 148, 214, 0.1);
                    transition: all 0.3s ease;
                }

            nav {
                display: flex;
                justify-content: space-between;
                align-items: center; /* jaga posisi tetap rata tengah */
                max-width: 1200px;
                margin: 0 auto;
                padding: 0 2rem;
                height: 80px; /* tinggi navbar biar stabil */
            }

            .logo img {
                height: 150px;   /* logo besar tapi tetap proporsional */
                width: auto;
                display: block;
                object-fit: contain; /* biar tidak gepeng */
                
            }

            .nav-links {
                display: flex;
                list-style: none;
                gap: 2rem;
            }

            .nav-links a {
                text-decoration: none;
                color: #333;
                font-weight: 500;
                transition: color 0.3s ease;
            }

            .nav-links a:hover {
                color: #5D94D6;
            }

            /* Dropdown parent */
            .nav-links .dropdown {
                position: relative;
            }

            /* Dropdown menu hidden */
            .nav-links .dropdown-menu {
                list-style: none;   /* Hilangkan bullet */
                margin: 0;
                padding: 0;
                display: none;
                position: absolute;
                top: 100%; 
                left: 0;
                background: white;
                border-radius: 10px;
                box-shadow: 0 5px 15px rgba(0,0,0,0.15);
                min-width: 200px;
                z-index: 999;
            }

            /* Style link dropdown */
            .nav-links .dropdown-menu li a {
                display: block;
                padding: 10px 15px;
                color: #333;
                text-decoration: none;
                transition: background 0.3s;
            }

            /* Hover efek pada item */
            .nav-links .dropdown-menu li a:hover {
                background: #f0f4f8;
                color: #5D94D6;
            }

            /* Show dropdown on hover */
            .nav-links .dropdown:hover .dropdown-menu {
                display: block;
            }


            .cta-btn {
                background: linear-gradient(135deg, #5D94D6, #4A7BC8);
                color: white !important;
                padding: 0.8rem 1.5rem;
                border: none;
                border-radius: 25px;
                text-decoration: none;
                font-weight: 600;
                transition: all 0.3s ease;
                box-shadow: 0 4px 15px rgba(93, 148, 214, 0.3);
            }

            .cta-btn:hover {
                transform: translateY(-2px);
                box-shadow: 0 6px 20px rgba(93, 148, 214, 0.4);
            }

            .lang-switch {
                display: flex;
                gap: 10px;
                align-items: center;
                margin-left: 1rem;
                }

                .lang-switch .flag {
                width: 24px;
                height: auto;
                cursor: pointer;
                transition: transform 0.2s ease;
                }

                .lang-switch .flag:hover {
                transform: scale(1.2);
                }

            /* HAMBURGER */
            .hamburger {
                display: none;
                flex-direction: column;
                gap: 5px;
                cursor: pointer;
                z-index: 1100; /* supaya di atas menu */
            }

            .hamburger span {
                width: 25px;
                height: 3px;
                background: #5D94D6;
                border-radius: 2px;
                transition: 0.3s;
            }

            /* RESPONSIVE NAV */
            @media (max-width: 768px) {
                .nav-links {
                    position: fixed;
                    top: 0;
                    right: -100%;
                    height: 100vh;
                    width: 70%;
                    background: white;
                    flex-direction: column;
                    align-items: center;
                    justify-content: center;
                    gap: 2rem;
                    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
                    transition: right 0.3s ease;
                    z-index: 1000;
                }

                .nav-links.active {
                    right: 0;
                }

                .hamburger {
                    display: flex;
                }
            }

            /* Hamburger animation */
            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(6px, -6px);
            }

        /* Hero Section */
            .hero {
                background: url('img/bigdataa.webp') no-repeat center center/cover;
                height: 100vh;
                display: flex;
                align-items: center;
                justify-content: flex-start;
                text-align: left;
                color: white;
                position: relative;
                overflow: hidden;
                padding-left: 80px; /* geser teks ke dalam */
            }

            .hero::before {
                content: '';
                position: absolute;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0, 51, 102, 0.4); /* overlay biru transparan */
                z-index: 1;
            }

            .hero-container {
                position: relative;
                z-index: 2;
                max-width: 700px;
            }

            .hero h1 {
                font-size: 3.5rem;
                font-weight: 700;
                line-height: 1.2;
                margin-bottom: 20px;
                color: #fff; /* pastikan teks terang */
                text-shadow: 2px 2px 6px rgba(0,0,0,0.6); /* bayangan hitam halus */
            }

            .hero p {
                font-size: 1rem;
                margin-bottom: 30px;
                max-width: 600px;
                color: #fff;
                text-shadow: 1px 1px 4px rgba(0,0,0,0.5);
            }


            .btn-primary {
                display: inline-block;
                padding: 12px 28px;
                background: white;
                color: #003366;
                font-weight: 600;
                border-radius: 50px;
                text-decoration: none;
                transition: 0.3s;
            }

            .btn-primary:hover {
                background: #0055aa;
                color: white;
            }


        /* Core Business Section */
        .core-business {
            padding: 6rem 2rem;
            background: #ffffff;
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-header h2 {
            font-size: 2.8rem;
            font-weight: 700;
            color: #333;
            margin-bottom: 1rem;
        }

        .section-header p {
            font-size: 1.2rem;
            color: #666;
            max-width: 600px;
            margin: 0 auto;
        }

        .business-cards {
        display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            align-items: stretch;
        }

        .business-card {
            background: white;
            border-radius: 20px;
            padding: 2.5rem;
            box-shadow: 0 10px 40px rgba(93, 148, 214, 0.1);
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(93, 148, 214, 0.1);
            cursor: pointer;
            transform-style: preserve-3d; /* penting untuk efek 3D */
        }

        .business-card:hover {
            transform: translateY(-15px) scale(1.05) rotateX(5deg) rotateY(5deg);
            box-shadow: 0 25px 60px rgba(93, 148, 214, 0.3), 
                        0 10px 20px rgba(0, 0, 0, 0.15); /* shadow ganda */
            border: 1px solid rgba(93, 148, 214, 0.4);
        }

        /* highlight glowing garis tipis */
        .business-card::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: 20px;
            background: linear-gradient(135deg, rgba(93,148,214,0.25), rgba(0,123,255,0.25));
            opacity: 0;
            transition: opacity 0.4s ease;
            z-index: 1;
            pointer-events: none;
        }

        .business-card:hover::before {
            opacity: 1;
        }

        .card-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, #5D94D6, #4A7BC8);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            font-size: 2rem;
            color: white;
        }

        .card-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: #333;
            margin-bottom: 1rem;
        }

        .card-description {
            color: #666;
            line-height: 1.6;
            margin-bottom: 2rem;
        }

        .card-features {
            list-style: none;
            margin-bottom: 2rem;
        }

        .card-features li {
            padding: 0.3rem 0;
            color: #666;
            position: relative;
            padding-left: 1.5rem;
        }

        .card-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #5D94D6;
            font-weight: bold;
        }

        .card-button {
            background: linear-gradient(135deg, #5D94D6, #4A7BC8);
            color: white;
            padding: 0.8rem 1.5rem;
            border: none;
            border-radius: 25px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            display: inline-block;
        }

        .card-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(93, 148, 214, 0.3);
        }

        /* About Section */
        .about {
            padding: 6rem 2rem;
            background: linear-gradient(135deg, #f8f9ff, #ffffff);
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-text h3 {
            font-size: 2.5rem;
            font-weight: 700;
            color: #333;
            margin-bottom: 1.5rem;
        }

        .about-text p {
            font-size: 1.1rem;
            color: #666;
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
            margin-top: 2rem;
        }

        .stat {
            text-align: center;
            padding: 1.5rem;
            background: white;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(93, 148, 214, 0.1);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: #5D94D6;
            display: block;
        }

        .stat-label {
            color: #666;
            font-weight: 500;
        }

        /* Footer */
        .footer {
            background: #333;
            color: white;
            padding: 3rem 0 1rem;
        }

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

        .footer-section h3 {
            color: #5D94D6;
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }

        .footer-section p, .footer-section li {
            color: #ccc;
            line-height: 1.8;
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-section a:hover {
            color: #5D94D6;
        }

        .footer-bottom {
            border-top: 1px solid #555;
            padding-top: 1rem;
            text-align: center;
            color: #999;
        }

        /* Animations */
        @keyframes slideInLeft {
            from {
                opacity: 0;
                transform: translateX(-50px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes slideInRight {
            from {
                opacity: 0;
                transform: translateX(50px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-20px);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .hero-container {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .hero-content h1 {
                font-size: 2.5rem;
            }

            .business-cards {
                grid-template-columns: 1fr;
            }

            .about-content {
                grid-template-columns: 1fr;
            }

            .stats {
                grid-template-columns: 1fr;
            }

            .hero-buttons {
                justify-content: center;
            }
        }

        /* Scroll animations */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }