body {
  background: #c8cee6;
  font-family: Arial, sans-serif;
  margin: 0;
  min-height: 100vh;
  }
  
  .mobile-menu { 
    display: none; 
  }

  .mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(200,206,230,0.98);
  z-index: 999;
  }
  
  .skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #000;
    color: #fff;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
  }
  
  .skip-link:focus {
    top: 0;
  }
  
  nav {
  background: rgba(200,206,230,0.95);
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  position: relative;
  z-index: 1000;
  }

  .nav-brand {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  z-index: 1002;
  }

  .logo {
  width: 60px;
  height: auto;
  display: block;
  margin: 0 auto;
  }

  nav .left-links,
  nav .right-links {
  display: flex;
  gap: 2rem;
  align-items: center;
  }

  nav .left-links {
  position: absolute;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
  }

  nav .right-links {
  position: absolute;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  }

  nav a {
  color: black;
  text-decoration: none;
  font-weight: normal;
  text-transform: uppercase;
  }
  nav a.active {
  font-weight: 900;
  }
  
  .hero-section {
  background: url('kep.jpg') no-repeat center center;
  background-size: cover;
  color: darkred;
  text-align: center;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  }

  .hero-section p {
  font-size: 1.4rem;
  }

  .hero-section .container { 
    margin-top: -80px; 
  }
  .hero-button {
  display: inline-block;
  background-color: #333;
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  margin-top: 1rem;
  transition: background-color 0.3s ease;
  }

  .hero-button:hover { 
    background-color: #555; 
  }
  
  .content-section {
  background: rgba(200,206,230,0.95);
  padding: 4rem 2rem;
  }

  .content-section h2 {
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 2rem;
  text-align: center;
  width: 100%;
  }

  .benefits-list {
  text-align: left;
  }

  .benefits-list ul {
  list-style: disc;
  padding-left: 2rem;
  margin: 0;
  }

  .benefits-list li {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  line-height: 1.6;
  }

  .two-column {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
  }

  .advantage-img {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  }
  
  .exercise-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
  width: 100%;
  }

  .exercise-row video,
  .exercise-row figure {
  flex: 0 0 calc(50% - 1rem);
  max-width: calc(50% - 1rem);
  }

  .exercise-row figure {
  text-align: center;
  margin: 0;
  }

  .exercise-row img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  }
  
  .icon-row {
  display: flex;
  justify-content: space-around;
  align-items: center;
  margin-top: 1rem;
  padding: 0.5rem 0;
  }

  .icon-row img {
  width: 2rem;
  height: auto;
  transition: transform 0.3s ease;
  }

  .icon-row img:hover {
  transform: scale(1.1);
  }
  
  .form-container {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  }

  .form-article {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
  margin-bottom: 3rem;
  }

  .form-article img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  object-fit: cover;
  }

  .form-group {
  margin-bottom: 1.5rem;
  }

  label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #2c3e50;
  }

  input[type="text"],
  input[type="email"],
  textarea {
  width: 100%;
  padding: 0.8rem;
  border: 2px solid #c8cee6;
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
  }

  input:focus,
  textarea:focus {
  border-color: #2c3e50;
  outline: none;
  }

  .radio-group {
  display: flex;
  gap: 1.5rem;
  margin: 1rem 0;
  }

  .radio-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  }

  .button-group {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  }

  input[type="submit"],
  input[type="reset"] {
  padding: 0.8rem 2rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  transition: background-color 0.3s ease;
  }

  input[type="submit"] {
  background: #2c3e50;
  color: white;
  }

  input[type="submit"]:hover {
  background: #34495e;
  }

  input[type="reset"] {
  background: #c8cee6;
  color: #2c3e50;
  }

  input[type="reset"]:hover {
  background: #b6bdd6;
  }
  
  .centered-heading {
    text-align: center;
  }

  table {
  width: 100%;
  max-width: 1200px;
  margin: 2rem auto;
  border-collapse: collapse;
  background: white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  border-radius: 8px;
  overflow: hidden;
  }

  caption {
  font-size: 1.2rem;
  font-weight: bold;
  margin: 1rem 0;
  color: darkred;
  }

  thead {
  background: #2c3e50;
  color: white;
  }

  th, td {
  padding: 1rem;
  text-align: center;
  }

  tr:nth-child(even) { 
    background-color: #f8f9fa; 
  }
  
  details {
  transition: all 0.3s ease;
  cursor: pointer;
  }

  summary {
  list-style: none;
  padding: 0.8rem;
  font-weight: 500;
  color: #2c3e50;
  position: relative;
  }

  summary::-webkit-details-marker { display: none; }
  summary:after {
  content: "+";
  position: absolute;
  right: 10px;
  transition: transform 0.3s;
  }

  details[open] summary:after {
  content: "-";
  }

  details[open] { 
    background: #f8f9fa; 
    border-radius: 4px; 
  }

  .form-article img {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 8px;
    object-fit: cover;
    justify-self: end;
  }

  .form-article aside {
    display: flex;
    justify-content: flex-end;
    align-items: center;
  }
  
  .form-article aside img {
    max-width: 100%;
    height: auto;
  }

  footer {
  background: #BDBDBD;
  color: #000;
  padding: 2rem;
  text-align: center;
  }

  .footer-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
  }

  .footer-nav a {
  color: #000;
  text-decoration: none;
  font-weight: bold;
  }

  footer .contrast-button {
    position: relative;
    display: block;
    margin: 1rem auto 0; /* Középre igazítás és távolság a footer-től */
    padding: 12px 18px;
    background: #000;
    color: #fff;
    border: 2px solid #fff;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    text-align: center;
    z-index: 1000;
    transition: all 0.3s;
  }
  
  footer .contrast-button:hover {
    background: #fff;
    color: #000;
  }

  a[href^="http"] {
    text-decoration: underline;
    color: #007BFF; 
    font-weight: bold; 
  }

  a[href^="http"]:visited {
    color: #555;
    text-decoration: underline;
  }
  /* Reszponzív */
  @media (max-width: 1024px) {
  .two-column {
     grid-template-columns: 1fr;
      text-align: center;
     }

  .advantage-img {
     max-width: 300px;
    }

  .icon-row { 
    flex-wrap: wrap; 
    gap: 1rem; 
  }

  .icon-row img { 
    width: 40px;
   }

  }
  @media (max-width: 768px) {
    .mobile-menu {
      display: block;
      position: relative;
      z-index: 1001;
    }
  
    .left-links,
    .right-links {
      display: none !important;
    }
  
    nav.expanded .left-links,
    nav.expanded .right-links {
      display: flex !important;
      flex-direction: column;
      width: 100%;
      left: 0;
      padding: 1rem 0;
      gap: 1rem;
      position: fixed;
    }
  
    nav.expanded .left-links {
      top: 130px;
    }
  
    nav.expanded .right-links {
      top: calc(80px + 108px);
    }
  
    .menu-icon {
      width: 30px;
    }
  
    .two-column {
      grid-template-columns: 1fr;
      text-align: center;
    }
  
    .advantage-img {
      max-width: 250px;
    }
  
    .icon-row {
      flex-wrap: wrap;
      gap: 0.5rem;
    }
  
    .icon-row img {
      width: 30px;
    }
  
    footer .footer-nav {
      display: none;
    }
  
    .left-links,
    .right-links {
      position: fixed;
      width: 100%;
      left: 0;
    }
  
    nav.expanded .mobile-menu-overlay {
      display: block;
    }
  
    table {
      box-shadow: none;
      background: transparent;
    }
  
    thead {
      display: none;
    }
  
    td {
      display: block;
      text-align: left;
      padding: 0.8rem;
    }
  
    td:before {
      content: attr(data-label);
      float: left;
      font-weight: bold;
      color: darkred;
      margin-right: 1rem;
    }
  
    tr {
      margin-bottom: 1rem;
      border-radius: 8px;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
      background: white;
    }
  }