:root {
  --gtreg-ink: #17212b;
  --gtreg-muted: #5d6975;
  --gtreg-line: #dfe7ee;
  --gtreg-soft: #f6f9fc;
  --gtreg-accent: #0f7c80;
  --gtreg-accent-2: #c23b55;
  --gtreg-accent-3: #f2b84b;
}

body {
  color: var(--gtreg-ink);
}

.navbar {
  border-bottom: 1px solid rgba(23, 33, 43, 0.08);
  box-shadow: 0 8px 30px rgba(23, 33, 43, 0.05);
}

.navbar-brand {
  font-weight: 800;
}

.navbar .nav-link {
  font-weight: 650;
}

.contents h1,
.contents h2,
.contents h3 {
  letter-spacing: 0;
}

.gtreg-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px;
  gap: 2rem;
  align-items: center;
  padding: 2.5rem;
  margin: 1.25rem 0 2rem;
  border: 1px solid var(--gtreg-line);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(15, 124, 128, 0.10), rgba(194, 59, 85, 0.08)),
    var(--gtreg-soft);
}

.gtreg-hero h1 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  line-height: 0.95;
  font-weight: 850;
}

.gtreg-hero p {
  max-width: 54rem;
  margin-bottom: 1rem;
  color: var(--gtreg-muted);
  font-size: 1.12rem;
}

.gtreg-hero img {
  width: 100%;
  max-width: 180px;
  filter: drop-shadow(0 18px 30px rgba(23, 33, 43, 0.16));
}

.template-home .gtreg-home-logo {
  display: block;
  width: min(280px, 52vw);
  max-width: 100%;
  height: auto;
  margin: 1.25rem 0 2rem;
}

.gtreg-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.7rem;
  margin-bottom: 0.85rem;
  border-radius: 999px;
  background: #ffffff;
  color: var(--gtreg-accent);
  font-weight: 800;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.gtreg-kicker p,
.gtreg-actions p,
.gtreg-step p {
  margin: 0;
}

.gtreg-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.25rem;
}

.gtreg-actions p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.gtreg-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0.65rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--gtreg-accent);
  background: var(--gtreg-accent);
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

.gtreg-actions a.secondary {
  background: #ffffff;
  color: var(--gtreg-accent);
}

.gtreg-workflow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 1.5rem 0 2rem;
}

.gtreg-step {
  padding: 1rem;
  border: 1px solid var(--gtreg-line);
  border-radius: 14px;
  background: #ffffff;
}

.gtreg-step strong {
  display: block;
  margin-bottom: 0.25rem;
}

.gtreg-step span {
  color: var(--gtreg-muted);
}

.ref-index section {
  padding: 1.25rem 1.4rem;
  margin-bottom: 1.25rem;
  border: 1px solid var(--gtreg-line);
  border-left: 6px solid var(--gtreg-accent);
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 12px 28px rgba(23, 33, 43, 0.05);
}

.ref-index h2 {
  margin-top: 0;
  font-weight: 850;
}

.ref-index th {
  border-top: 0;
}

.ref-index code,
.contents code {
  color: #a52840;
}

.ref-index a,
.contents a {
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.contents table {
  overflow: hidden;
  border-radius: 12px;
}

.contents table th {
  background: var(--gtreg-soft);
}

.contents pre {
  border-radius: 14px;
  border: 1px solid var(--gtreg-line);
}

@media (max-width: 767.98px) {
  .gtreg-hero {
    grid-template-columns: 1fr;
    padding: 1.5rem;
  }

  .gtreg-hero img {
    max-width: 130px;
  }

  .template-home .gtreg-home-logo {
    width: min(180px, 60vw);
  }

  .gtreg-workflow {
    grid-template-columns: 1fr;
  }
}