body {
      font-family: Arial, sans-serif;
      margin: 0;
      padding: 0;
      line-height: 1.6;
      color: #333;
      background-color: #f9f9f9;
    }
    .hero {
      position: relative;
      min-height: 92vh;
      display: flex;
      align-items: center;
      justify-content: center;
      isolation: isolate;
      overflow: hidden;
    }
    .hero::before {
      content:"";
      position: absolute;
      inset: 0;
      background: url('../img/portada-exxon.jpg') center/cover no-repeat;
      filter: saturate(110%) contrast(105%) brightness(90%);
      transform: scale(1.03);
    }
    .hero::after {
      content:"";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, var(--overlay) 100%);
    }
    .hero .inner {
      position: relative;
      z-index: 2;
      text-align: center;
      padding: 64px 24px;
      padding-top: 25%;
    }
    .hero h1 {
      font-size: clamp(32px, 6vw, 64px);
      line-height: 1.15;
      margin: 0 0 16px;
      color: #fff;
    }
    .hero p {
      max-width: 900px;
      margin: 0 auto 28px;
      font-size: clamp(16px, 2.5vw, 20px);
      color: var(--muted);
    }
    .head_exp{
    top:0;
    background-color: #ed1c24;
    padding: 0.5em;
    position: fixed;
    display: block;
    width: 100%;
    border-bottom-color: #000;
    border-right-width: 2px;
    border-bottom-style:solid;
    z-index: 99;
    -webkit-transition: background-color 0.5s ease-out; -moz-transition: 
  background-color 0.5s ease-out; -o-transition: background-color 0.5s ease-out; transition: background-color 0.5s ease-out;
}
.head_exp:hover{
    background-color: rgb(0, 0, 0);
}
        .block-image {
      text-align: center;
      margin: 1rem 0;
    }
    .block-image img {
      width: 100%;
      max-width: 600px;
      border-radius: 6px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.2);
    }

    blockquote {
      font-style: italic;
      font-size: 20px;
      color: #555;
      border-left: 4px solid #e30613;
      padding-left: 1rem;
      margin: 1.5rem 0;
    }
    section {
      padding: 2rem;
      max-width: 1000px;
      margin: auto;
      background: #fff;
      margin-bottom: 1.5rem;
      border-radius: 8px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    }
    h2 {
      color: #002f5f;
      margin-bottom: 1rem;
    }
    ul {
      margin: 1rem 0;
      padding-left: 1.5rem;
    }
    .gallery {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      justify-content: center;
      margin-top: 1rem;
    }
    .gallery img {
      width: 300px;
      height: 200px;
      object-fit: cover;
      border-radius: 6px;
      box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    }
    .cta {
      text-align: center;
      margin: 2rem 0;
    }
    .cta button {
      background: #e30613;
      color: #fff;
      border: none;
      padding: 1rem 2rem;
      font-size: 1.2rem;
      border-radius: 6px;
      cursor: pointer;
      transition: background 0.3s ease;
    }
    .cta button:hover {
      background: #b0040f;
    }

    .btn{
  display:inline-block;
  padding:.8rem 1.2rem;
  border-radius:8px;
  text-decoration:none;
  font-weight:600;
}
.btn-primary{background:var(--accent);color:#fff}

.site-footer{
  background:#f5f5f5;
  padding:2rem 0;
  text-align:center;
  border-top:1px solid #ddd;
}
.footer-content{display:flex;flex-direction:column;gap:1rem;align-items:center}