.rbs-custom-header {
    background: #3e4e41 !important; /* Hijau Tua */
    padding: 60px 20px;
    text-align: center;
    border-radius: 8px;
    margin-bottom: 40px;
}
.text-white { color: #ffffff !important; margin: 5px 0; }
.italic { font-style: italic; opacity: 0.8; }

.rbs-header-buttons { margin-top: 25px; display: flex; justify-content: center; gap: 15px; }
.btn-orange { background: #d2691e; color: #fff !important; padding: 12px 25px; border-radius: 5px; text-decoration: none; font-weight: bold; }
.btn-outline { border: 2px solid #fff; color: #fff !important; padding: 12px 25px; border-radius: 5px; text-decoration: none; }

.rbs-grid-layout { display: flex; gap: 30px; }
.rbs-cat-sidebar { width: 200px; }
.rbs-posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; flex: 1; }

.course-card { background: #fff; border: 1px solid #eee; padding: 15px; border-radius: 8px; text-align: center; }
.course-card img { border-radius: 5px; margin-bottom: 10px; width: 100%; height: auto; }

@media (max-width: 768px) {
    .rbs-grid-layout { flex-direction: column; }
    .rbs-posts-grid { grid-template-columns: 1fr; }
}