body {
  margin: 0;
  min-height: 100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-image: url('graphics/WTCsunnydaybkgrnd.png');
  background-repeat: repeat;
  background-position: center center;
  background-blend-mode: exclusion;
  background-attachment: scroll;
  background-size: auto;
  background-color: transparent;
  color: #0a0a0a;
  line-height: 1.5;
  position: relative;
  z-index: 0;
}

body::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.70;
  background-color: rgba(255, 255, 255, 1.00);
}

/* Deliberately NO panel colour here. The body::before 70% white wash IS the
   legibility layer -- that is exactly how the original RapidWeaver .story rule
   worked. An opaque column would hide the tiled towers completely. */
.oa-wrap {
  box-sizing: border-box;
  width: 100%;
  max-width: 75rem;
  margin-inline: auto;
  padding-inline: 2rem;
  padding-block: 1.5rem;
}

h1,
h2,
h3 {
  line-height: 1.4;
  margin-top: 0;
  margin-bottom: .5rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.9375rem; }

img {
  max-width: 100%;
  height: auto;
}

@media (max-width: 699px) {
  .oa-wrap {
    padding-inline: 1.25rem;
  }

  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  h3 { font-size: 1.1875rem; }
}