.header-circle {
  --height: 800px;
  height: var(--height);
  max-height: 100vw;
  position: relative;
  margin-bottom: 100px;
}
.header-content-left {
  width: 50%;
  float: right;
  z-index: 2;
  position: relative;
}
@media only screen and (max-width: 600px) {
  .header-circle {
    margin-bottom: 50px;
  }
  .header-content-left {
    width: auto;
  }
}
.header-content-left h1 {
  box-sizing: content-box;
  font-size: 3.15em;
  font-weight: 400;
  padding: 0.3em 0.4em;
  max-width: 450px;
  line-height: 1;
}
@media only screen and (max-width: 600px) {
  .header-content-left h1 {
    padding: 20px;
    margin-top: 2rem;
  }
}
.circle {
  max-height: var(--height);
  max-width: var(--height);
  height: calc(100vw - 50px);
  width: calc(100vw - 50px);
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translate(-50%, 0%);
  background: red;
  border-radius: 50%;
  background-color: #ef2a28;
  background-image: linear-gradient(-130deg, #ef2a28 0%, #d97a00 100%);
}
.circle:before {
  content: "";
  height: 100%;
  width: 100%;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, 0%) scale(1.05);
  border-radius: 50%;
  box-shadow: inset 180px -20px 100px var(--aad-black);
}

@media only screen and (max-width: 800px) {
  .circle:before {
    box-shadow: inset 80px -20px 80px var(--aad-black);
  }
}