.phonex-concept .hero-copy h2 {
  max-width: 18ch;
  text-wrap: balance;
}

.px-workspace .chapter-heading {
  margin-bottom: 32px;
}

.px-workspace .chapter-heading h2 {
  max-width: 17ch;
  text-wrap: balance;
}

.px-workspace-shell {
  display: grid;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
}

.px-workspace-nav {
  display: none;
  align-content: start;
  gap: 24px;
  padding: 24px 16px;
  border-right: 1px solid var(--line);
}

.concept-enhanced .px-workspace-nav {
  display: grid;
}

.px-workspace-nav-group {
  display: grid;
  gap: 4px;
}

.px-workspace-nav-label {
  padding: 0 12px 4px;
  color: var(--muted);
  font-size: .875rem;
  font-weight: 700;
}

.px-workspace-nav button {
  width: 100%;
  min-height: 48px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--ink);
  padding: 10px 12px;
  text-align: left;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.px-workspace-nav button:hover {
  background: var(--paper);
}

.px-workspace-nav button[aria-pressed="true"] {
  background: var(--ink);
  color: white;
}

.px-workspace button:focus-visible,
.px-workspace a:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

.px-workspace-panels {
  min-width: 0;
  padding: clamp(16px, 3vw, 36px);
}

.px-workspace-panel:not([hidden]) {
  display: grid;
  gap: 16px;
}

.px-workspace .px-workspace-panel h3 {
  max-width: 30ch;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  line-height: 1.16;
  text-wrap: balance;
}

.px-workspace-panel > p {
  max-width: 62ch;
  margin: 0;
  line-height: 1.6;
  color: var(--ink);
}

.px-workspace-example {
  max-width: 65ch;
  margin: 0;
  border-left: 2px solid var(--green);
  padding: 8px 0 8px 16px;
  color: var(--ink);
}

.px-workspace-figure {
  margin: 0;
}

.px-workspace-image {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: white;
}

.px-workspace-image picture {
  display: block;
}

.px-workspace-image img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: center top;
}

.px-workspace-open {
  position: absolute;
  inset: auto 8px 8px auto;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--ink);
  font-size: .875rem;
  font-weight: 700;
}

.px-workspace-figure figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: .875rem;
}

.px-workspace-footer {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: 20px;
}

.px-workspace-footer p {
  max-width: 64ch;
  margin: 0;
  color: var(--muted);
  font-size: .875rem;
}

@media (max-width: 860px) {
  .px-workspace-shell {
    grid-template-columns: 1fr;
  }

  .px-workspace-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    padding: 16px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 560px) {
  .px-workspace .chapter-heading {
    margin-bottom: 20px;
  }

  .px-workspace-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px;
    padding: 12px;
  }

  .px-workspace-nav-group {
    display: contents;
  }

  .px-workspace-nav-label {
    display: none;
  }

  .px-workspace-nav button {
    min-height: 44px;
    padding: 8px;
    font-size: .875rem;
  }

  .px-workspace-image img {
    aspect-ratio: 4 / 3;
  }

  .px-workspace-footer {
    flex-wrap: wrap;
  }
}