@keyframes shanelle {
  to {
    background-position: 100%;
  }
}

.category-third-container {
  max-width: 1450px;
  margin: 0 auto;
  padding: 40px 20px;
  background-color: #fff;
}
.category-third-hero h1 {
  font-size: 50px;
  margin-bottom: 20px;
  font-weight: 700;
  letter-spacing: 25px;
  color: #131217;
  background: linear-gradient(90deg, #102124 50%, #fff 50%);
  background-size: 320% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shanelle 5s ease-in-out infinite alternate;
  position: relative;
  z-index: 2;
}

.category-third-container section {
  margin-bottom: 80px;
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.category-third-container h2 {
  margin-bottom: 30px;
  color: #122538;
  font-weight: 600;
  transition: transform 0.6s ease-out, opacity 0.6s ease;
}

.category-third-container h3 {
  margin-bottom: 20px;
  color: #122538;
  font-weight: 600;
}

.category-third-container p {
  margin-bottom: 20px;
  color: #333;
  text-align: justify;
}

.category-third-intro {
  margin-top: 60px;
  margin-bottom: 80px;
  position: relative;
}

.category-third-intro-wrapper {
  position: relative;
  z-index: 1;
}

.category-third-intro-header {
  text-align: center;
  margin-bottom: 60px;
  padding: 0 20px;
}

.category-third-intro-header h2 {
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
}

.category-third-intro-subtitle-text {
  color: #333;
  font-weight: 300;
  margin: 0;
}

.category-third-intro-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
  grid-auto-rows: minmax(200px, auto);
}

.category-third-intro-card {
  background: linear-gradient(135deg, #122538 0%, #0a1620 100%);
  border-radius: 20px;
  padding: 40px;
  position: relative;
  overflow: hidden;
  color: #fff;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(18, 37, 56, 0.3);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.category-third-intro-card-image {
  display: none; /* в блоке "Что такое линейные панели?" только цветной фон */
}

.category-third-intro-card-large {
  grid-column: span 2;
  background: linear-gradient(135deg, #122538 0%, #000 100%);
  min-height: 280px;
}

.category-third-intro-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.category-third-intro-card:hover::before {
  opacity: 1;
}

.category-third-intro-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 15px 40px rgba(18, 37, 56, 0.5);
}

.category-third-intro-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(18, 37, 56, 0.7) 0%, rgba(0, 0, 0, 0.5) 100%);
  opacity: 1;
  transition: opacity 0.4s ease;
  pointer-events: none;
  z-index: 1;
}

.category-third-intro-card:hover .category-third-intro-card-overlay {
  opacity: 1;
}

.category-third-intro-card-icon {
  font-size: 4rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.15);
  line-height: 1;
  margin-bottom: 20px;
  position: relative;
  z-index: 3;
  transition: all 0.4s ease;
}

.category-third-intro-card:hover .category-third-intro-card-icon {
  color: rgba(255, 255, 255, 0.25);
  transform: scale(1.1);
}

.category-third-intro-card-content {
  position: relative;
  z-index: 3;
}

.category-third-intro-card-content h3 {
  margin-bottom: 20px;
  color: #fff;
  font-weight: 600;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
}

.category-third-intro-card:hover .category-third-intro-card-content h3 {
  transform: translateX(5px);
}

.category-third-intro-card-content p {
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
  margin: 0;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.category-third-intro-card {
  opacity: 1;
  transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}

.category-third-text-section {
  background-color: #F5F5F5;
}

.category-third-text-content {
  max-width: 1200px;
  margin: 0 auto;
}

.category-third-text-content p {
  line-height: 1.8;
  color: #333;
  margin-bottom: 25px;
  text-align: justify;
}

.category-third-text-content p:last-child {
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .category-third-text-section {
    padding: 60px 20px;
  }

  .category-third-text-content p {
    line-height: 1.7;
    text-align: left;
  }
}

.category-third-applications {
  margin-top: 80px;
  padding: 80px 20px;
  text-align: center;
}

.category-third-applications-wrapper {
  max-width: 1450px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.category-third-applications-label {
  color: #333;
  max-width: 500px;
  margin: 0 auto 8px;
  text-transform: capitalize;
  display: flex;
  align-items: center;
  justify-content: center;
}

.category-third-applications h2 {
  color: #122538;
  font-weight: 600;
  max-width: 768px;
  margin: 0 auto 64px;
  line-height: 1.2;
}

.category-third-applications-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 1280px;
  margin: 0 auto;
  text-align: left;
}

.category-third-application-card {
  background-color: #333;
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.category-third-application-card::before {
  position: absolute;
  content: "";
  width: 100%;
  height: 100%;
  transition: 0.6s;
  z-index: 0;
  background-color: #122538;
}

.category-third-application-card:hover {
  box-shadow: 0 2px 20px 6px rgba(0, 0, 0, 0.53);
}

.category-third-application-card:nth-child(1)::before {
  bottom: 0;
  right: 0;
  clip-path: circle(calc(100px + 7.5vw) at 100% 100%);
}

.category-third-application-card:nth-child(2)::before {
  bottom: 0;
  left: 0;
  clip-path: circle(calc(100px + 7.5vw) at 0% 100%);
}

.category-third-application-card:nth-child(3)::before {
  top: 0;
  right: 0;
  clip-path: circle(calc(100px + 7.5vw) at 100% 0%);
}

.category-third-application-card:nth-child(4)::before {
  top: 0;
  left: 0;
  clip-path: circle(calc(100px + 7.5vw) at 0% 0%);
}

.category-third-application-card p {
  transition: 0.8s;
}

.category-third-application-card:hover::before {
  clip-path: circle(110vw at 100% 100%);
}

.category-third-application-card:hover p {
  color: #fff;
}

.category-third-application-circle {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 0;
  top: 0;
  left: 0;
}

.category-third-application-content {
  position: relative;
  z-index: 1;
  padding-right: 200px;
}

.category-third-application-card:nth-child(2) .category-third-application-content,
.category-third-application-card:nth-child(4) .category-third-application-content {
  padding-right: 0;
  padding-left: 200px;
}

.category-third-application-content h3 {
  text-transform: capitalize;
  color: #fff;
  margin-bottom: 16px;
  font-weight: 600;
  line-height: 1.3;
}

.category-third-application-content p {
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.category-third-related {
  padding: 50px 20px;
  margin-top: 60px;
}

.category-third-related-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.category-third-related-title {
  text-align: center;
  margin-bottom: 32px;
  color: #122538;
  font-weight: 600;
}

.category-third-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.category-third-related-card {
  display: flex;
  flex-direction: column;
  min-height: 220px;
  padding: 24px;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.category-third-related-card-heading {
  margin: 0 0 12px;
  color: #122538;
  font-weight: 600;
}

.category-third-related-card-desc {
  flex: 1;
  margin: 0 0 20px;
  color: #333;
  text-align: left;
}

.category-third-related-btn {
  display: inline-block;
  margin-top: auto;
  padding: 10px 20px;
  text-align: center;
  color: #fff;
  background-color: #122538;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.25s ease;
}

.category-third-related-btn:hover {
  background-color: #1a3550;
}

.category-third-related-see {
  background-color: #f8f9fa;
}

.category-third-related-see .category-third-related-card {
  border: 1px solid #e5e7eb;
  box-shadow: none;
}

.category-third-related-see .category-third-related-btn {
  background-color: #1e3a5f;
}

.category-third-related-see .category-third-related-btn:hover {
  background-color: #122538;
}

.category-third-related-extra {
  background-color: #fff;
}

.category-third-related-extra .category-third-related-card {
  border: none;
  box-shadow: 0 4px 16px rgba(18, 37, 56, 0.08);
  border-left: 4px solid #122538;
}

.category-third-related-extra .category-third-related-btn {
  background-color: #122538;
}

@media (max-width: 768px) {
  .category-third-related-grid {
    grid-template-columns: 1fr;
  }

  .category-third-related-card {
    min-height: 180px;
  }
}

.category-third-technical-specs {
  margin-top: 80px;
}

.category-third-technical-specs h2 {
  text-align: center;
}

.category-third-specs-table-wrapper {
  overflow-x: auto;
  margin-top: 40px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  border-radius: 10px;
}

.category-third-specs-table {
  width: 100%;
  border-collapse: collapse;
  background-color: #fff;
  border-radius: 10px;
  overflow: hidden;
}

.category-third-specs-table thead {
  background-color: #122538;
  color: #fff;
}

.category-third-specs-table th {
  padding: 20px 30px;
  text-align: left;
  font-weight: 600;
  color: #fff;
}

.category-third-specs-table tbody tr {
  border-bottom: 1px solid #F5F5F5;
  transition: background-color 0.3s ease;
}

.category-third-specs-table tbody tr:last-child {
  border-bottom: none;
}

.category-third-specs-table tbody tr:hover {
  background-color: #F5F5F5;
}

.category-third-spec-name {
  padding: 25px 30px;
  font-weight: 600;
  color: #122538;
  vertical-align: top;
  width: 30%;
  min-width: 200px;
  border-right: 2px solid #F5F5F5;
}

.category-third-spec-description {
  padding: 25px 30px;
  color: #333;
  line-height: 1.8;
  vertical-align: top;
}

.category-third-benefits {
  margin-top: 80px;
  padding: 80px 20px;
}

.category-third-benefits h2 {
  text-align: center;
  font-weight: 600;
  color: #122538;
  margin-bottom: 40px;
}

.category-third-benefits-dropdown-container {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
  max-width: 1450px;
  margin: 0 auto;
}

.category-third-benefits-dropdown {
  position: relative;
  display: flex;
  align-items: center;
  flex-direction: column;
  background-color: #fff;
  width: 90%;
  max-width: 500px;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(18, 37, 56, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.5s ease;
  opacity: 0;
  transform: translateY(30px);
}

.category-third-benefits-dropdown:nth-child(1) {
  background: linear-gradient(135deg, #fff 0%, #F5F5F5 100%);
}

.category-third-benefits-dropdown:nth-child(2) {
  background: linear-gradient(135deg, #F5F5F5 0%, #fff 100%);
}

.category-third-benefits-dropdown:nth-child(3) {
  background: linear-gradient(135deg, #fff 0%, #F5F5F5 100%);
}

.category-third-benefits-dropdown.category-third-dropdown-animated {
  opacity: 1;
  transform: translateY(0);
}

.category-third-benefits-dropdown.category-third-dropdown-animated:hover {
  transform: translateY(-5px) !important;
  box-shadow: 0 8px 25px rgba(18, 37, 56, 0.2);
}

.category-third-dropdown-checkbox {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 50px;
  z-index: 10;
  opacity: 0;
  cursor: pointer;
}

.category-third-dropdown-btn {
  width: 100%;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 50px;
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 0;
  transition: background-color 0.3s ease;
}

.category-third-benefits-dropdown:hover .category-third-dropdown-btn {
  background-color: rgba(18, 37, 56, 0.03);
}

.category-third-dropdown-btn p {
  text-align: center;
  font-weight: 600;
  color: #333;
  margin: 0;
  transition: color 0.3s ease;
}

.category-third-benefits-dropdown:hover .category-third-dropdown-btn p {
  color: #122538;
}

.category-third-dropdown-icon {
  position: absolute;
  right: 20px;
  border-radius: 50%;
  width: 28px;
  aspect-ratio: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 1px solid #000;
}

.category-third-dropdown-icon span {
  width: 20px;
  background-color: #000;
  border-radius: 9999px;
  height: 2px;
  position: absolute;
}

.category-third-dropdown-icon span:nth-child(2) {
  transform: rotate(90deg);
  transition: width 0.3s ease;
}

.category-third-dropdown-content {
  width: 100%;
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 16px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease-out;
}

.category-third-dropdown-text {
  width: 100%;
  padding: 20px;
  overflow: visible;
}

.category-third-dropdown-text p {
  color: #333;
  line-height: 1.8;
  margin: 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: normal;
}

.category-third-dropdown-checkbox:checked ~ .category-third-dropdown-content {
  max-height: 2000px;
  transition: max-height 1s ease-in-out;
}

.category-third-dropdown-checkbox:checked + .category-third-dropdown-btn .category-third-dropdown-icon span:nth-child(2) {
  width: 0;
}

@media (min-width: 768px) {
  .category-third-dropdown-checkbox {
    height: 60px;
  }

  .category-third-dropdown-btn {
    height: 60px;
  }


  .category-third-dropdown-icon {
    width: 32px;
  }

  .category-third-dropdown-icon span {
    width: 20px;
  }

  .category-third-benefits-dropdown {
    width: 30%;
  }
}

.category-third-gallery-wrapper {
  margin-top: 80px;
  padding: 0 20px 20px;
  max-width: 1450px;
  width: 100%;
}

.category-third-gallery-wrapper h2 {
  text-align: center;
  margin-bottom: 40px;
}

.category-third-container-gallery {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.category-third-column {
  display: flex;
  flex-direction: column;
  gap: 20px;
  flex: 1;
  min-width: 280px;
}

.category-third-block {
  background-color: #122538;
  color: #fff;
  text-align: center;
  border-radius: 40px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex-grow: 1;
  overflow: hidden;
  position: relative;
  padding: 16px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.category-third-block:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.category-third-block img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 25px;
  display: block;
}

.category-third-title {
  font-weight: 600;
  color: #fff;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.7);
  text-align: center;
  padding: 10px 20px;
}

.category-third-shadow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom,
  rgba(0, 0, 0, 0.7),
  rgba(0, 0, 0, 0.3),
  transparent);
  pointer-events: none;
  z-index: 1;
  opacity: 1;
  transition: opacity 0.2s ease;
}

.category-third-block:hover .category-third-shadow {
  opacity: 0.6;
}

@media (max-width: 768px) {
  .category-third-applications {
    padding: 60px 20px;
  }

  .category-third-applications h2 {
    margin-bottom: 40px;
  }

  .category-third-applications-grid {
    grid-template-columns: 1fr;
  }

  .category-third-application-content {
    padding-right: 0 !important;
    padding-left: 0 !important;
  }


  .category-third-gallery-wrapper {
    padding: 0 20px 20px;
  }

  .category-third-container-gallery {
    flex-direction: column;
    gap: 15px;
  }

  .category-third-column {
    min-width: 100%;
    flex: none;
  }

  .category-third-block {
    padding: 10px;
    border-radius: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  }

  .category-third-title {
    padding: 8px 12px;
  }

  .category-third-shadow {
    background: linear-gradient(to bottom,
    rgba(0, 0, 0, 0.6),
    rgba(0, 0, 0, 0.2),
    transparent);
  }
}

.category-third-social {
  margin-top: 80px;
  padding: 60px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.category-third-social h2 {
  text-align: center;
  font-weight: 600;
  color: #122538;
  margin-bottom: 40px;
}

.category-third-social-list {
  position: relative;
  margin: 0;
  padding: 0;
  display: flex;
  list-style: none;
}

.category-third-social-list li {
  list-style: none;
}

.category-third-social-list li a {
  display: block;
  position: relative;
  width: 100px;
  height: 100px;
  line-height: 100px;
  font-size: 40px;
  text-align: center;
  text-decoration: none;
  color: #333;
  margin: 0 30px;
  transition: 0.5s;
}

.category-third-social-list li a span {
  position: absolute;
  transition: transform 0.5s;
}

.category-third-social-list li a span:nth-child(1),
.category-third-social-list li a span:nth-child(3) {
  width: 100%;
  height: 3px;
  background: #333;
}

.category-third-social-list li a span:nth-child(1) {
  top: 0;
  left: 0;
  transform-origin: right;
}

.category-third-social-list li a:hover span:nth-child(1) {
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s;
}

.category-third-social-list li a span:nth-child(3) {
  bottom: 0;
  left: 0;
  transform-origin: left;
}

.category-third-social-list li a:hover span:nth-child(3) {
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s;
}

.category-third-social-list li a span:nth-child(2),
.category-third-social-list li a span:nth-child(4) {
  width: 3px;
  height: 100%;
  background: #333;
}

.category-third-social-list li a span:nth-child(2) {
  top: 0;
  left: 0;
  transform: scale(0);
  transform-origin: bottom;
}

.category-third-social-list li a:hover span:nth-child(2) {
  transform: scale(1);
  transform-origin: top;
  transition: transform 0.5s;
}

.category-third-social-list li a span:nth-child(4) {
  top: 0;
  right: 0;
  transform: scale(0);
  transform-origin: top;
}

.category-third-social-list li a:hover span:nth-child(4) {
  transform: scale(1);
  transform-origin: bottom;
  transition: transform 0.5s;
}

.category-third-phone:hover {
  color: #122538;
}

.category-third-phone:hover span {
  background: #122538;
}

.category-third-whatsapp:hover {
  color: #25D366;
}

.category-third-whatsapp:hover span {
  background: #25D366;
}

.category-third-telegram:hover {
  color: #0088cc;
}

.category-third-telegram:hover span {
  background: #0088cc;
}

.category-third-email:hover {
  color: #dd4b39;
}

.category-third-email:hover span {
  background: #dd4b39;
}

@media (max-width: 768px) {
  .category-third-social-list li a {
    width: 80px;
    height: 80px;
    line-height: 80px;
    font-size: 32px;
    margin: 0 15px;
  }
}

@media (max-width: 480px) {
  .category-third-social-list li a {
    width: 60px;
    height: 60px;
    line-height: 60px;
    font-size: 24px;
    margin: 0 10px;
  }
}

@media (max-width: 480px) {
  .category-third-title {
    padding: 6px 10px;
  }

  .category-third-block:hover {
    transform: scale(1);
  }

  .category-third-specs-table {
    display: block;
    overflow-x: auto;
  }

  .category-third-specs-table thead,
  .category-third-specs-table tbody,
  .category-third-specs-table tr {
    display: block;
  }

  .category-third-specs-table thead {
    display: none;
  }

  .category-third-specs-table tbody tr {
    margin-bottom: 20px;
    border: 1px solid #F5F5F5;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    display: block;
  }

  .category-third-specs-table tbody tr:last-child {
    margin-bottom: 0;
  }

  .category-third-spec-name {
    width: 100%;
    border-right: none;
    border-bottom: 2px solid #122538;
    background-color: #122538;
    color: #fff;
    font-weight: 700;
    padding: 15px 20px;
    display: block;
  }

  .category-third-spec-description {
    width: 100%;
    padding: 20px;
    display: block;
  }

  .category-third-block img {
    height: auto;
  }

  .category-third-container-gallery {
    gap: 10px;
  }

  .category-third-block {
    gap: 10px;
  }

  .category-third-specs-table th,
  .category-third-spec-name,
  .category-third-spec-description {
    padding: 15px 20px;
  }

  .category-third-spec-name {
    width: 35%;
    min-width: 150px;
  }

  .category-third-specs-table {
    display: block;
    overflow-x: auto;
  }

  .category-third-specs-table thead,
  .category-third-specs-table tbody,
  .category-third-specs-table tr {
    display: block;
  }

  .category-third-specs-table thead {
    display: none;
  }

  .category-third-specs-table tbody tr {
    margin-bottom: 20px;
    border: 1px solid #F5F5F5;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    display: block;
  }

  .category-third-specs-table tbody tr:last-child {
    margin-bottom: 0;
  }

  .category-third-spec-name {
    width: 100%;
    border-right: none;
    border-bottom: 2px solid #122538;
    background-color: #122538;
    color: #fff;
    font-weight: 700;
    padding: 15px 20px;
    display: block;
  }

  .category-third-spec-description {
    width: 100%;
    padding: 20px;
    display: block;
  }
}