.product-overview-page {
  background: #fafbfc;
  padding: 48px 24px 60px;
}

.product-overview-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 40px;
  align-items: start;
}

/* MAIN CONTENT */
.po-main {}

.po-tag {
  display: inline-block;
  background: rgba(25, 118, 200, .1);
  color: #1976c8;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
}

.po-title {
  font-size: 36px;
  font-weight: 900;
  color: #0d2b4e;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.po-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #1976c8, #4ab5f7);
  border-radius: 2px;
  margin-bottom: 24px;
}

.po-desc {
  font-size: 15px;
  color: #44546a;
  line-height: 1.9;
  margin-bottom: 28px;
}

.po-image {
  width: min(78%, 680px);
  height: 380px;
  border-radius: 16px;
  overflow: hidden;
  margin: 0 auto 28px;
  box-shadow: 0 8px 32px rgba(13, 43, 78, .1);
  position: relative;
  background: #ffffff;
}

.po-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  /* padding: 14px; */
  /* background: #fff; */
}

@media (max-width: 600px) {
  .po-image {
    width: 100%;
    margin: 0 0 24px;
  }
}

.po-image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #dbeef9 0%, #edf6fb 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  color: #1976c8;
}

.po-image-placeholder i {
  font-size: 64px;
  opacity: 0.4;
}

.po-image-placeholder span {
  font-size: 14px;
  color: #667085;
}

.po-highlight {
  background: linear-gradient(135deg, #f0f7ff, #e8f3fd);
  border-left: 4px solid #1976c8;
  border-radius: 0 12px 12px 0;
  padding: 20px 24px;
  margin-bottom: 28px;
}

.po-highlight p {
  font-size: 15px;
  color: #0d2b4e;
  line-height: 1.8;
  margin: 0;
}

.po-features {
  margin-bottom: 28px;
}

.po-features h3 {
  font-size: 18px;
  font-weight: 700;
  color: #0d2b4e;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.po-features h3 i {
  color: #1976c8;
}

.po-features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.po-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
}

.po-feature-item i {
  font-size: 20px;
  color: #1976c8;
  flex-shrink: 0;
  margin-top: 1px;
}

.po-feature-item span {
  font-size: 13px;
  color: #44546a;
  line-height: 1.5;
}

.po-substrates {
  margin-bottom: 32px;
}

.po-substrates h3 {
  font-size: 18px;
  font-weight: 700;
  color: #0d2b4e;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.po-substrates h3 i {
  color: #1976c8;
}

.po-substrate-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.po-substrate-tag {
  padding: 8px 16px;
  background: #fff;
  border: 1px solid #c8ddf5;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  color: #1976c8;
}

.po-cta {
  display: flex;
  gap: 14px;
}

.po-cta a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.po-cta .btn-primary {
  background: #1976c8;
  color: #fff;
  border: 2px solid #1976c8;
}

.po-cta .btn-primary:hover {
  background: #0d5aa7;
  transform: translateY(-2px);
}

.po-cta .btn-outline {
  background: #fff;
  color: #0d2b4e;
  border: 2px solid #c8d5e8;
}

.po-cta .btn-outline:hover {
  border-color: #1976c8;
  color: #1976c8;
  transform: translateY(-2px);
}

/* SIDEBAR */
.po-sidebar {
  position: sticky;
  top: 120px;
}

.po-sidebar-box {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(13, 43, 78, .06);
  margin-bottom: 20px;
}

.po-sidebar-title {
  background: linear-gradient(135deg, #0d2b4e, #1976c8);
  color: #fff;
  padding: 14px 20px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.po-sidebar-title i {
  font-size: 16px;
}

.po-sidebar-links {
  padding: 8px 0;
}

.po-sidebar-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 20px;
  font-size: 14px;
  color: #44546a;
  text-decoration: none;
  border-bottom: 1px solid #f0f2f5;
  transition: all 0.2s ease;
}

.po-sidebar-links a:last-child {
  border: 0;
}

.po-sidebar-links a:hover {
  background: #f0f7ff;
  color: #1976c8;
  padding-left: 24px;
}

.po-sidebar-links a.active {
  background: #f0f7ff;
  color: #1976c8;
  font-weight: 600;
  border-left: 3px solid #1976c8;
}

.po-sidebar-links a i {
  font-size: 14px;
  color: #c8d5e8;
}

.po-sidebar-links a:hover i {
  color: #1976c8;
}

.po-sidebar-cta {
  background: linear-gradient(135deg, #0d2b4e, #1976c8);
  border-radius: 14px;
  padding: 24px 20px;
  text-align: center;
  color: #fff;
}

.po-sidebar-cta i {
  font-size: 36px;
  margin-bottom: 10px;
  display: block;
  opacity: 0.9;
}

.po-sidebar-cta h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.po-sidebar-cta p {
  font-size: 13px;
  color: rgba(255, 255, 255, .8);
  margin-bottom: 16px;
  line-height: 1.5;
}

.po-sidebar-cta a {
  display: block;
  background: #fff;
  color: #0d2b4e;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
}

.po-sidebar-cta a:hover {
  background: #4ab5f7;
  color: #fff;
}

@media (max-width: 900px) {
  .product-overview-inner {
    grid-template-columns: 1fr;
  }

  .po-sidebar {
    position: static;
  }

  .po-features-grid {
    grid-template-columns: 1fr;
  }

  .po-cta {
    flex-direction: column;
  }
}