.sizing-intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.2rem 0 1rem;
}

.panel-sizing-tool {
  scroll-margin-top: 120px;
  margin: 0 0 2rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-top: 4px solid var(--sun);
  border-radius: 8px;
  background: #f8fbff;
}

.panel-sizing-head,
.panel-sizing-form,
.panel-sizing-result,
.panel-sizing-foot {
  padding-inline: clamp(1rem, 2.5vw, 1.5rem);
}

.panel-sizing-head {
  padding-top: 1.35rem;
}

.panel-sizing-head h2 {
  margin: 0.2rem 0 0.55rem;
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
}

.panel-sizing-head p:last-child {
  max-width: 76ch;
  margin: 0;
  color: var(--ink-soft);
}

.panel-sizing-form {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
  align-items: start;
  padding-block: 1.15rem;
}

.panel-sizing-form label {
  min-width: 0;
  font-size: 0.84rem;
}

.panel-sizing-form input,
.panel-sizing-form select {
  width: 100%;
  min-height: 48px;
}

.panel-sizing-form .btn {
  grid-column: 1 / -1;
  min-height: 48px;
  justify-self: start;
}

.panel-sizing-help {
  display: block;
  margin-top: 0.35rem;
  color: var(--ink-soft);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.45;
}

.panel-sizing-result {
  min-height: 132px;
  display: grid;
  align-content: center;
  gap: 0.38rem;
  border-block: 1px solid var(--line);
  background: var(--white);
}

.panel-sizing-result strong {
  color: var(--ink);
  font-family: "Sora", sans-serif;
  font-size: 1.05rem;
}

.panel-sizing-result p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.5;
}

.panel-sizing-result[data-state="ready"] {
  border-left: 4px solid #067647;
  background: #ecfdf3;
}

.panel-sizing-result[data-state="error"] {
  border-left: 4px solid #b54708;
  background: #fffaeb;
}

.panel-sizing-caveat {
  font-size: 0.78rem !important;
}

.panel-sizing-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1rem;
}

.panel-sizing-foot p {
  max-width: 68ch;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.5;
}

.article-faq {
  scroll-margin-top: 120px;
  margin-top: 2.25rem;
}

.article-faq-list {
  display: grid;
  margin-top: 1rem;
  border-top: 1px solid var(--line);
}

.article-faq-list details {
  border-bottom: 1px solid var(--line);
}

.article-faq-list summary {
  padding: 0.9rem 0;
  color: var(--ink);
  cursor: pointer;
  font-weight: 800;
  line-height: 1.45;
}

.article-faq-list details p {
  margin: -0.15rem 0 1rem;
}

@media (max-width: 900px) {
  .panel-sizing-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .sizing-intro-actions,
  .panel-sizing-foot {
    align-items: stretch;
    flex-direction: column;
  }

  .sizing-intro-actions .btn,
  .panel-sizing-form .btn,
  .panel-sizing-foot .btn {
    width: 100%;
  }

  .panel-sizing-form {
    grid-template-columns: 1fr;
  }
}