:root {
    --primary-blue: #005A9C; /* Biru Tua */
    --accent-cyan: #00A3DA; /* Biru Muda */
    --success-green: #28A745;
}
.navbar-custom { background-color: var(--primary-blue); }
.hero-section { background-color: #f8f9fa; padding: 6rem 0; }
.service-card { border-left: 5px solid var(--accent-cyan); }
.btn-main { background-color: var(--success-green); border-color: var(--success-green); }
.btn-main:hover { background-color: #1e7e34; border-color: #1e7e34; }
.bg-primary-custom { background-color: var(--primary-blue) !important; }