@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700&display=swap');    
    /* ===== Custom Variables & Base Styles ===== */
    :root {
        --primary-blue: #0066cc;
        --primary-blue-dark: #0052a3;
        --primary-blue-light: #e6f0ff;
        --accent-cyan: #00b4d8;
        --text-dark: #1a1a1a;
        --text-gray: #555555;
        --text-light: #999999;
        --bg-light: #f8f9fb;
        --bg-white: #ffffff;
        --shadow-sm: 0 2px 8px rgba(0, 102, 204, 0.08);
        --shadow-md: 0 4px 16px rgba(0, 102, 204, 0.12);
        --shadow-lg: 0 8px 32px rgba(0, 102, 204, 0.15);
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: 'Inter', sans-serif;
        color: var(--text-dark);
        background-color: var(--bg-white);
        line-height: 1.6;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        font-family: 'Poppins', sans-serif;
        font-weight: 700;
        color: var(--text-dark);
        line-height: 1.3;
    }

.preloader {
    position: fixed;
    inset: 0;
    /* ganti top, left, width, height */
    z-index: 999999;
    background-color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader img {
    width: 150px;
    /* sesuaikan ukuran logo */
    max-width: 100%;
    animation: pulse 1.5s infinite ease-in-out;
}

/* animasi halus */
@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.05);
        opacity: 0.7;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

    /* ===== Navbar Styles ===== */
    .header{
        position: sticky;
        top: 0;
        z-index: 1000;
    }
    .navbar {
        background-color: var(--bg-white);
        box-shadow: var(--shadow-sm);
        padding: 1rem 0;
    }

    .navbar-brand {
        font-family: 'Poppins', sans-serif;
        font-size: 1.5rem;
        font-weight: 700;
        background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        margin-right: 2rem;
    }

    .navbar-nav .nav-link {
        font-weight: 500;
        color: var(--text-gray) !important;
        margin-left: 0.5rem;
        transition: all 0.3s ease;
        position: relative;
    }


    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active {
        color: var(--primary-blue) !important;
    }

    .navbar-nav .nav-link::after {
        content: '';
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--primary-blue), var(--accent-cyan));
        transition: width 0.3s ease;
    }

    .navbar-nav .nav-link:hover::after,
    .navbar-nav .nav-link.active::after {
        width: 100%;
    }

    .navbar-toggler {
        border: none;
        padding: 0.25rem 0.75rem;
    }

    .navbar-toggler:focus {
        box-shadow: 0 0 0 0.25rem rgba(0, 102, 204, 0.25);
    }

    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%230066cc' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    /* ===== Hero Section ===== */
    .hero-section {
        background: linear-gradient(135deg, rgb(4, 52, 99) 0%, #13d8ff 100%);
        color: var(--bg-white);
        padding: 2rem 0;
        position: relative;
        overflow: hidden;
    }

    .hero-section::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -10%;
        width: 600px;
        height: 600px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 50%;
    }

    .hero-section::after {
        content: '';
        position: absolute;
        bottom: -30%;
        left: -5%;
        width: 400px;
        height: 400px;
        background: rgba(255, 255, 255, 0.08);
        border-radius: 50%;
    }

    .hero-content {
        position: relative;
        z-index: 2;
    }

    .hero-section h1 {
        font-size: clamp(2rem, 5vw, 3.5rem);
        font-weight: 700;
        margin-bottom: 1.5rem;
        color: var(--bg-white);
        line-height: 1.2;
        text-align: center;
    }

    .hero-section .lead {
        font-size: 1.25rem;
        margin-bottom: 2.5rem;
        color: rgba(255, 255, 255, 0.95);
        max-width: 600px;
        font-weight: 400;
        text-align: center;
    }

    .btn-primary-hero {
        background-color: var(--bg-white);
        color: var(--primary-blue);
        border: none;
        padding: 0.875rem 2.5rem;
        font-weight: 600;
        border-radius: 8px;
        transition: all 0.3s ease;
        font-size: 1rem;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }

    .btn-primary-hero:hover {
        background-color: rgba(255, 255, 255, 0.95);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        color: var(--primary-blue);
    }

    /* ===== Section Spacing & Styling ===== */
    section {
        padding: 5rem 0;
    }

    .section-title {
        font-size: clamp(1.75rem, 4vw, 2.75rem);
        font-weight: 700;
        margin-bottom: 1rem;
        color: var(--text-dark);
    }

    .section-subtitle {
        font-size: 1.125rem;
        color: var(--text-gray);
        margin-bottom: 3.5rem;
        max-width: 600px;
    }

    /* ===== Services Section ===== */
    .services-section {
        background-color: var(--bg-light);
    }

    .service-card {
        background-color: var(--bg-white);
        border: 1px solid #e8e8e8;
        border-radius: 12px;
        padding: 2.5rem 2rem;
        text-align: center;
        transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        height: 100%;
        display: flex;
        flex-direction: column;
    }

    .service-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-lg);
        border-color: var(--primary-blue);
        background-color: var(--primary-blue-light);
    }

    .service-icon {
        width: 70px;
        height: 70px;
        background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1.5rem;
        font-size: 2rem;
        color: var(--bg-white);
        transition: all 0.3s ease;
    }

    .service-card:hover .service-icon {
        transform: scale(1.1) rotate(5deg);
    }

    .service-card h3 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
        color: var(--text-dark);
    }

    .service-card p {
        color: var(--text-gray);
        margin-bottom: 1.5rem;
        flex-grow: 1;
    }

    .service-link {
        color: var(--primary-blue);
        text-decoration: none;
        font-weight: 600;
        transition: all 0.3s ease;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
    }

    .service-link:hover {
        color: var(--accent-cyan);
        gap: 1rem;
    }

    /* ===== Advantages Section ===== */
    .advantages-section {
        background-color: var(--bg-white);
    }

    .advantage-item {
        display: flex;
        gap: 2rem;
        margin-bottom: 2.5rem;
    }

    .advantage-icon-wrapper {
        flex-shrink: 0;
        width: 80px;
        height: 80px;
        background: linear-gradient(135deg, var(--primary-blue-light), rgba(0, 180, 216, 0.1));
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2.5rem;
    }

    .advantage-icon-wrapper.speed {
        color: var(--primary-blue);
    }

    .advantage-icon-wrapper.security {
        color: var(--primary-blue);
    }

    .advantage-icon-wrapper.scale {
        color: var(--primary-blue);
    }

    .advantage-content h3 {
        font-size: 1.35rem;
        margin-bottom: 0.75rem;
        color: var(--text-dark);
    }

    .advantage-content p {
        color: var(--text-gray);
        margin: 0;
    }

    /* ===== Testimonials Section ===== */
    .testimonials-section {
        background-color: var(--bg-light);
    }

    .testimonial-card {
        background-color: var(--bg-white);
        border-radius: 12px;
        padding: 2rem;
        box-shadow: var(--shadow-sm);
        transition: all 0.3s ease;
        border-left: 4px solid var(--primary-blue);
    }

    .testimonial-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-4px);
    }

    .testimonial-stars {
        color: #ffc107;
        margin-bottom: 1rem;
        font-size: 1rem;
    }

    .testimonial-text {
        color: var(--text-gray);
        font-size: 1rem;
        margin-bottom: 1.5rem;
        line-height: 1.7;
        font-style: italic;
    }

    .testimonial-author {
        display: flex;
        align-items: center;
        gap: 1rem;
    }

    .testimonial-avatar {
        width: 50px;
        height: 50px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--bg-white);
        font-weight: 600;
        font-size: 1.2rem;
    }

    .testimonial-info h4 {
        font-size: 1rem;
        margin-bottom: 0.25rem;
        color: var(--text-dark);
    }

    .testimonial-position {
        font-size: 0.875rem;
        color: var(--text-light);
    }

    /* ===== CTA Section ===== */
    .cta-section {
        background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
        color: var(--bg-white);
        padding: 4.5rem 0;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        top: 0;
        right: -100px;
        width: 300px;
        height: 300px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 50%;
    }

    .cta-section::after {
        content: '';
        position: absolute;
        bottom: -50px;
        left: -50px;
        width: 250px;
        height: 250px;
        background: rgba(0, 180, 216, 0.2);
        border-radius: 50%;
    }

    .cta-content {
        position: relative;
        z-index: 2;
    }

    .cta-section h2 {
        font-size: clamp(1.75rem, 4vw, 2.5rem);
        margin-bottom: 1.5rem;
        color: var(--bg-white);
    }

    .cta-section p {
        font-size: 1.125rem;
        margin-bottom: 2.5rem;
        color: rgba(255, 255, 255, 0.95);
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .btn-secondary-cta {
        background-color: rgba(255, 255, 255, 0.15);
        color: var(--bg-white);
        border: 2px solid var(--bg-white);
        padding: 0.875rem 2.5rem;
        font-weight: 600;
        border-radius: 8px;
        transition: all 0.3s ease;
        font-size: 1rem;
    }

    .btn-secondary-cta:hover {
        background-color: var(--bg-white);
        color: var(--primary-blue);
        border-color: var(--bg-white);
        transform: translateY(-2px);
    }

    /* ===== Footer ===== */
    footer {
        background-color: #0a1428;
        color: rgba(255, 255, 255, 0.8);
        padding: 3.5rem 0 2rem;
    }

    .footer-brand {
        font-family: 'Poppins', sans-serif;
        font-size: 1.5rem;
        font-weight: 700;
        background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        margin-bottom: 1rem;
    }

    .footer-section h5 {
        font-size: 1rem;
        font-weight: 600;
        margin-bottom: 1.5rem;
        color: var(--bg-white);
    }

    .footer-section p {
        font-size: 0.95rem;
        line-height: 1.8;
        margin-bottom: 0.5rem;
    }

    .footer-link {
        color: rgba(255, 255, 255, 0.7);
        text-decoration: none;
        transition: all 0.3s ease;
        display: block;
        margin-bottom: 0.75rem;
        font-size: 0.95rem;
    }

    .footer-link:hover {
        color: var(--accent-cyan);
        padding-left: 0.5rem;
    }

    .social-links {
        display: flex;
        gap: 1rem;
        margin-bottom: 1.5rem;
    }

    .social-icon {
        width: 40px;
        height: 40px;
        background-color: rgba(0, 102, 204, 0.2);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent-cyan);
        transition: all 0.3s ease;
        font-size: 1.1rem;
        text-decoration: none;;
    }

    .social-icon:hover {
        background-color: var(--primary-blue);
        color: var(--bg-white);
        transform: translateY(-3px);
    }

    .footer-divider {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        margin-top: 2.5rem;
        padding-top: 2rem;
    }

    .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 1rem;
    }

    .footer-copyright {
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.6);
    }

    /* ===== Buttons Default Styles ===== */
    .btn {
        border-radius: 8px;
        padding: 0.75rem 1.75rem;
        font-weight: 600;
        transition: all 0.3s ease;
        border: none;
    }

    .btn-primary {
        background-color: var(--primary-blue);
        color: var(--bg-white);
    }

    .btn-primary:hover {
        background-color: var(--primary-blue-dark);
        transform: translateY(-2px);
    }

    /* ===== Responsive Typography ===== */
    @media (max-width: 768px) {
        section {
            padding: 3.5rem 0;
        }

        .hero-section {
            padding: 4.5rem 0;
        }

        .hero-section h1 {
            font-size: 2rem;
        }

        .hero-section .lead {
            font-size: 1rem;
        }

        .section-title {
            font-size: 2rem;
        }

        .advantage-item {
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .advantage-icon-wrapper {
            width: 60px;
            height: 60px;
            font-size: 2rem;
        }

        .advantage-content h3 {
            font-size: 1.2rem;
        }

        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
        }
    }

    @media (max-width: 576px) {
        section {
            padding: 2.5rem 0;
        }

        .hero-section {
            padding: 3.5rem 0;
        }

        .service-card {
            padding: 1.75rem 1.25rem;
        }

        .cta-section {
            padding: 3rem 0;
        }

        .cta-section h2 {
            font-size: 1.75rem;
        }

        .cta-section p {
            font-size: 1rem;
        }

        footer {
            padding: 2.5rem 0 1.5rem;
        }
    }