* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', 'Arial', sans-serif;
    background: #f8f9fa;
    min-height: 100vh;
}
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 30px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo img {
    height: 40px;
    width: auto;
}
.logo span {
    font-size: 20px;
    font-weight: bold;
    color: #1877F2;
}
.nav-links {
    display: flex;
    gap: 25px;
    flex-wrap: wrap;
}
.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}
.nav-links a:hover {
    color: #1877F2;
}
.hamburger {
    display: none;
    font-size: 28px;
    cursor: pointer;
    color: #1877F2;
}
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 100px 20px 60px;
}
.section-title {
    font-size: 42px;
    font-weight: bold;
    color: #1877F2;
    text-align: center;
    margin-bottom: 15px;
}
.section-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 50px;
    font-size: 18px;
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}
.card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}
.card:hover {
    transform: translateY(-5px);
}
.card-icon {
    font-size: 48px;
    color: #1877F2;
    margin-bottom: 15px;
}
.card h3 {
    font-size: 20px;
    color: #1877F2;
    margin-bottom: 10px;
}
.card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}
.btn-kembali {
    display: inline-block;
    background: #1877F2;
    color: white;
    padding: 12px 28px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 10px;
    transition: all 0.3s;
}
.btn-kembali:hover {
    background: #1464c9;
    transform: translateY(-2px);
}
.btn-wa {
    display: inline-block;
    background: #25D366;
    color: white;
    padding: 12px 28px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 10px;
    transition: all 0.3s;
}
.btn-wa:hover {
    transform: scale(1.05);
}
.footer {
    background: #0B1B3D;
    color: white;
    padding: 30px 20px;
    text-align: center;
}
.footer a {
    color: #1877F2;
    text-decoration: none;
}

@media (max-width: 768px) {
    .navbar {
        padding: 12px 20px;
    }
    .hamburger {
        display: block;
    }
    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 15px;
        padding: 20px 0 10px;
    }
    .nav-links.show {
        display: flex;
    }
    .section-title {
        font-size: 32px;
    }
    .card-grid {
        grid-template-columns: 1fr;
    }
    .container {
        padding: 80px 20px 40px;
    }
}