.index-hero {
  --header-height: 56px;
  --sun-offset: calc(var(--header-height) / 2);
  --mobile-top: 8vh;

  padding-top: var(--header-height);
  flex: 1;
  min-height: calc(100vh - var(--header-height));
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-pitch-black);
}
.index-hero__sun {
  position: absolute;
  left: 0;
  top: calc(50% + var(--sun-offset));
  transform: translate(-50%, -50%);
  width: 80vh;
  height: 80vh;
  max-width: 720px;
  max-height: 720px;
  border-radius: 50%;
  background: var(--color-brick-red);
  z-index: 1;
  animation: about-sun-enter 1s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.index-hero__inner {
  max-width: 1040px;
  width: 100%;
  margin: 0 auto;
  padding: 40px 50px;
  position: relative;
  z-index: 2;
}
.index-hero__content {
  max-width: 600px;
  margin-right: auto;
  margin-left: 60px;
  transform: translateY(-6vh);
}

.index-hero__wordmark {
  font-size: clamp(32px, 9vw, 120px);
  font-weight: 400;
  color: var(--color-parchment);
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin-bottom: 32px;
  animation: about-fade-right 1s cubic-bezier(0.22, 1, 0.36, 1) 0.2s both;
}
.index-hero__dot {
  color: var(--color-coral-red);
  font-weight: 600;
}
.index-hero__tagline {
  font-size: 16px;
  color: var(--color-warm-slate);
  letter-spacing: 0.08em;
  font-weight: 400;
  line-height: 1.8;
  margin-bottom: 48px;
  /* Align the tagline's optical left with the wordmark stem. */
  padding-left: 10px;
  animation: about-fade-right 1s cubic-bezier(0.22, 1, 0.36, 1) 0.4s both;
}

.index-hero__tool-bar {
  display: inline-block;
  border-left: 2px solid var(--color-stony-gray);
  /* Nudged right of the wordmark/tagline stem. */
  margin-left: 10px;
  padding: 8px 0 10px 8px;
  white-space: nowrap;
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--color-warm-slate);
  text-decoration: none;
  transition:
    border-color 0.2s,
    color 0.2s;
  animation: about-fade-right 1s cubic-bezier(0.22, 1, 0.36, 1) 0.6s both;
}
.index-hero__tool-bar:hover {
  border-left-color: var(--color-burnt-orange);
  color: var(--color-wheat);
}
.index-hero__tool-bar strong {
  color: var(--color-parchment);
  font-weight: 500;
}

@media (max-width: 1199px) {
  /* The hero restructures to its centered "mobile" layout here. Drop the sun
     so the narrow viewport isn't dominated by it; the footer is intentionally
     left alone and follows the global 768px rule. */
  .index-hero {
    align-items: center;
  }
  .index-hero__sun {
    display: none;
  }
  .index-hero__inner {
    padding: 40px 24px;
  }
  .index-hero__content {
    max-width: 600px;
    margin-right: auto;
    margin-left: auto;
    transform: none;
    text-align: center;
  }
  .index-hero__tagline {
    padding-left: 0;
  }
  .index-hero__tool-bar {
    margin-left: 0;
    white-space: normal;
    text-align: left;
    max-width: 100%;
  }
}