html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    font-family: 'Instrument Sans', sans-serif;
    overflow: hidden;
  }

.slideshow-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
/*         z-index: -1; */
    overflow: hidden;
  }
.slideshow-container img {
    position: absolute;
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.4s;
  }
.slideshow-container img.active {
    opacity: 1;
    z-index: 1;
  }

.slide-zone {
    position: absolute;
    top: 0;
    width: 50vw;
    height: 100vh;
    z-index: 10;
  }

.slide-zone.left,
.slide-zone.right,
.slide-zone.center {
width: 33.333vw;
}

.slide-zone.left {
    left: 0;
    cursor: w-resize;
}

.slide-zone.right {
    right: 0;
    cursor: e-resize;
  }

.slide-zone.center {
left: 33.333vw;
cursor: pointer;
}

.slide-tooltip {
display: none;
position: fixed;
left: 0; top: 0;
transform: translate(-50%, -120%);
background: #fff;
color: #000;
border-radius: 30px;
font-size: 14px;
padding: 6px 14px;
pointer-events: auto;
z-index: 100;
white-space: pre-line;
text-decoration: none;
transition: opacity 0.18s;
}

.slide-tooltip.show {
display: block;
opacity: 1;
}

header {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 30px;
    padding: 16px 20px;
    box-sizing: border-box;
    color: #fff;
    mix-blend-mode: difference;
  }

header a {
text-decoration: none;
color: #fff;
font-size: 14px;
}

header a:hover {
  color: #888;
  transition: color 0.2s;
}

  main {
    position: relative;
    z-index: 2;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .center-content {
    color: #fff;
    text-align: center;
    font-size: 2rem;
    mix-blend-mode: difference;
  }

  @media (max-width: 768px) {
    .center-content { font-size: 1.2rem; }
    main { padding-top: 60px; }
    header { font-size: 1rem; }
    .slide-zone { width: 50vw; height: 100vh; }
  }