.eyebrow {
  color: var(--color-green);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lead {
  max-width: 58ch;
  color: #343840;
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.btn {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-ink);
  border-radius: 7px;
  box-shadow: 4px 4px 0 var(--color-ink);
  font-weight: 900;
  text-decoration: none;
  padding: 0.65rem 1rem;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--color-ink);
}

.btn-primary {
  background: var(--color-yellow);
  color: var(--color-ink);
}

.btn-secondary {
  background: white;
  color: var(--color-ink);
}

.text-link {
  display: inline-flex;
  align-items: center;
  color: var(--color-green-dark);
  font-weight: 900;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.2em;
}

.marker {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-ink);
  border-radius: 50%;
  color: var(--color-ink);
  font-size: 0.85rem;
  font-weight: 900;
}

.marker-green {
  background: #b7e0ce;
}

.marker-red {
  background: #f0b3a8;
}

.marker-blue {
  background: #b7c9ed;
}

.marker-yellow {
  background: var(--color-yellow);
}

.feature-card,
.compare-grid article,
.install-tabs,
.faq-list details {
  border: 2px solid var(--color-ink);
  border-radius: var(--radius);
  background: white;
  box-shadow: 5px 5px 0 var(--color-ink);
}

.feature-card {
  padding: 1.2rem;
}

.feature-card h3,
.compare-grid h3 {
  margin-top: 1rem;
  margin-bottom: 0.45rem;
}

.feature-card p,
.compare-grid p,
.faq-list p {
  color: var(--color-muted);
  margin-bottom: 0;
}

.tab-list {
  display: flex;
  gap: 0.5rem;
  border-bottom: 2px solid var(--color-ink);
  background: var(--color-surface-alt);
  padding: 0.7rem;
}

.tab-list button {
  border: 2px solid transparent;
  border-radius: 7px;
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  font-weight: 900;
  padding: 0.55rem 0.85rem;
}

.tab-list button[aria-selected="true"] {
  border-color: var(--color-ink);
  background: var(--color-yellow);
  color: var(--color-ink);
}

.tab-panel {
  padding: clamp(1.1rem, 3vw, 2rem);
}

.tab-panel h3 {
  margin-bottom: 0.5rem;
}

.faq-list {
  display: grid;
  max-width: 820px;
  margin-inline: auto;
  gap: 1rem;
}

.faq-list details {
  padding: 1rem 1.2rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 900;
}

.center-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.8rem;
}

@media (max-width: 640px) {
  .btn {
    width: 100%;
  }

  .tab-list {
    flex-direction: column;
  }
}