/* home_ui_v2 sub-pages — extends base.css + home.css */

.page-open {
  padding: 4rem 0 2.5rem;
  border-bottom: 1px solid var(--line);
}

.page-open .display {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin-bottom: 1rem;
}

.page-open .display b {
  display: block;
  color: var(--leaf-deep);
  font-weight: 700;
}

.page-open .lede { max-width: 38rem; }

.jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.75rem;
}

.jump a {
  padding: 0.34rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--ink-soft);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.jump a:hover {
  color: var(--leaf-deep);
  border-color: var(--leaf);
}

/* Compact chapter variant for reference pages */
.chapter.compact { padding: 2.75rem 0; }

.chapter.compact .chapter-head { margin-bottom: 1.25rem; }

.chapter.compact .chapter-no { font-size: clamp(2rem, 3.5vw, 2.6rem); }

/* Two-column capability columns */
.columns {
  columns: 2;
  column-gap: 2.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.columns li {
  break-inside: avoid;
  position: relative;
  padding: 0 0 0.55rem 0.95rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.columns li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--leaf);
}

.columns li b {
  color: var(--ink);
  font-weight: 600;
}

/* Detail rows with an icon */
.detail {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.detail > li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1.25rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.detail img {
  width: 2.6rem;
  height: 2.6rem;
  object-fit: contain;
}

.detail h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.detail p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.detail .tags { margin: 0.7rem 0 0; }

.detail .tags span {
  font-size: 0.7rem;
  padding: 0.22rem 0.6rem;
  border-color: var(--line);
}

/* Page callout */
.callout {
  margin: 3rem 0 0;
  padding: 2rem 0 0;
  border-top: 1px solid var(--line);
}

.callout h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: -0.035em;
}

.callout p {
  margin: 0 0 1.4rem;
  max-width: 32rem;
  color: var(--ink-soft);
}

.callout-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (max-width: 700px) {
  .columns { columns: 1; }
  .detail > li { grid-template-columns: 1fr; gap: 0.6rem; }
}