body {
  font-family: 'Poppins', sans-serif;
  background-color: #f8f9fa;
  color: #333;
}

.navbar, .footer {
  background-color: #2c3e50;
  color: #ffffff;
}

.hero-section {
  background: linear-gradient(135deg, #3498db, #8e44ad);
  color: #fff;
  padding: 100px 0;
}

.icon-headline {
  font-size: 70px;
  color: #f1c40f;
}

.article-section {
  background-color: #fff;
  padding: 50px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  margin: 20px auto;
  max-width: 800px;
}

.article-section h2 {
  margin-bottom: 20px;
  text-align: center;
}

.footer {
  padding: 20px 0;
  position: relative;
}

.back-to-top {
  position: fixed;
  bottom: 80px;
  right: 20px;
  display: none;
  z-index: 1000;
}

.jumbotron-cta {
  padding: 100px 0;
  border-radius: 10px;
  margin: 50px 0;
  background: linear-gradient(135deg, #3498db, #8e44ad);
  color: #fff;
}

.jumbotron-cta h2 {
  font-weight: 700;
  margin-bottom: 20px;
}

.jumbotron-cta .btn {
  margin: 10px;
  padding: 10px 30px;
  font-size: 18px;
  border-radius: 50px;
}

.jumbotron-cta .btn-success {
  background-color: #28a745;
  border-color: #28a745;
}

.jumbotron-cta .btn-light {
  background-color: #fff;
  color: #3498db;
  border-color: #fff;
}
/* CSS untuk PageSpeed Section */
.pagespeed-section {
  background-color: #f8f9fa;
  padding: 60px 0;
}

.pagespeed-section h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.pagespeed-section .lead {
  font-size: 1.25rem;
  margin-bottom: 30px;
}

.chart-container {
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 20px;
  background-color: #fff;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.chart-container img {
  border-radius: 8px;
}
.seo-guide {
  max-width: 1200px;
  margin: 0 auto;
}

.seo-list {
  list-style: none;
  padding-left: 0;
}

.seo-list li {
  padding-left: 1.8rem;
  margin-bottom: 0.8rem;
  position: relative;
}

.seo-list li:before {
  content: "✓";
  color: #198754;
  position: absolute;
  left: 0;
  font-weight: 700;
}

.intro-card {
  border-left: 4px solid #198754;
}

.chapter h2 {
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #198754;
  display: inline-block;
}