:root {
      --primary: #d6001c;
      --dark: #111;
      --light: #fff;
      --gray: #f5f5f5;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: 'Montserrat', sans-serif;
      color: var(--dark);
      background-color: var(--light);
    }

    menu {
        background: #fff;
        position: fixed;
        width: 100%;
        z-index: 100;
        text-align: center;
    }

    header {
      background: url('../img/portada-hsbc.jpg') no-repeat center center/cover;
      height: 100vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
      background-size: cover;
      align-items: center;
      text-align: center;
      color: var(--light);
      position: relative;
      padding-top: 30%;
    }
    header::after {
      content: "";
      position: absolute;
      top:0; left:0; right:0; bottom:0;
      background: rgba(0,0,0,0.55);
    }
    header h1, header p, header a {
      position: relative;
      z-index: 1;
    }
    header h1 {
      font-size: clamp(2rem, 5vw, 3.5rem);
      margin-bottom: 1rem;
    }
    header p {
      font-size: clamp(1rem, 2vw, 1.4rem);
      margin-bottom: 2rem;
    }

    .logoExpansion{
      height: 30px;
      margin: 0.5rem 0rem;
    }
    .btn {
      background: var(--primary);
      color: var(--light);
      padding: 1rem 2rem;
      text-decoration: none;
      font-weight: 600;
      border-radius: 4px;
      transition: all 0.3s ease;
      display: inline-block;
    }
    .btn:hover {
      background: #a50015;
      transform: translateY(-3px);
      box-shadow: 0 6px 15px rgba(0,0,0,0.2);
    }
    section {
      padding: 80px 20px;
      max-width: 1200px;
      margin: auto;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    section:nth-child(even) {
      direction: rtl;
      text-align: left;
    }
    section img {
      width: 100%;
      border-radius: 12px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    section img:hover {
      transform: scale(1.05);
    }
    section .text {
      direction: ltr;
    }
    section h2 {
      font-size: 2rem;
      margin-bottom: 1rem;
      color: var(--primary);
    }
    section p {
      font-size: 1rem;
      line-height: 1.6;
    }
    footer {
      text-align: center;
      padding: 60px 20px;
      background: var(--gray);
    }
    footer h2 {
      font-size: 2rem;
      margin-bottom: 1rem;
      color: var(--primary);
    }
    footer p {
      margin-bottom: 2rem;
      font-size: 1.1rem;
    }
    /* Responsive */
    @media (max-width: 768px) {
      section {
        grid-template-columns: 1fr;
        text-align: center;
      }
      section:nth-child(even) {
        direction: ltr;
      }
      section img, section .text {
        width: 100%;
      }
    }