.crx-science-topics {
  box-sizing: border-box;
  width: 100%;
  padding: 100px var(--crx-margin);
  background: var(--crx-white);
  font-family: var(--crx-font);
  color: var(--crx-dark);
}

.crx-science-topics__inner {
  width: 100%;
  max-width: var(--crx-container);
  margin: 0 auto;
}

.crx-science-topics__item {
  padding: 20px 0;
  border-bottom: 0.5px solid var(--crx-divider);
}

.crx-science-topics__item:first-child {
  border-top: 0.5px solid var(--crx-divider);
}

.crx-science-topics__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  margin: 0;
  padding: 20px 0;
  border: 0;
  background: transparent;
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.crx-science-topics__summary-main {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.crx-science-topics__icon {
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.crx-science-topics__title {
  font-family: var(--crx-font);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: 0.05em;
  color: var(--crx-dark);
}

.crx-science-topics__chevron {
  flex: 0 0 15px;
  width: 15px;
  height: 9px;
  transform: rotate(180deg);
  transition: transform 0.4s ease;
}

.crx-science-topics__item.is-open .crx-science-topics__chevron {
  transform: rotate(0deg);
}

.crx-science-topics__collapse {
  overflow: hidden;
  height: 0;
  transition: height 0.4s ease;
}

.crx-science-topics__item.is-open .crx-science-topics__collapse {
  height: auto;
}

.crx-science-topics__panel {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 0 40px 48px;
  text-align: left;
}

.crx-science-topics__heading {
  margin: 0;
  font-family: var(--crx-font);
  font-weight: 500;
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.1em;
  color: var(--crx-dark);
}

.crx-science-topics__body {
  width: 100%;
  font-family: var(--crx-font);
  font-weight: 400;
  font-size: 18px;
  line-height: 1.4;
  letter-spacing: 0.03em;
  color: var(--crx-dark);
}

.crx-science-topics__body h2,
.crx-science-topics__body h3,
.crx-science-topics__body h4 {
  margin: 0 0 16px;
  font-family: var(--crx-font);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  letter-spacing: 0.03em;
  color: var(--crx-dark);
}

.crx-science-topics__body p {
  margin: 0 0 16px;
}

.crx-science-topics__body p:last-child,
.crx-science-topics__body h2:last-child,
.crx-science-topics__body h3:last-child,
.crx-science-topics__body h4:last-child,
.crx-science-topics__body ul:last-child {
  margin-bottom: 0;
}

.crx-science-topics__body ul {
  margin: 0 0 16px;
  padding-left: 1.2em;
}

.crx-science-topics__body ul li {
  list-style: disc;
  margin: 0 0 8px;
}

.crx-science-topics__body strong {
  font-weight: 700;
}

.crx-science-topics__callout {
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-sizing: border-box;
  width: 100%;
  padding: 40px;
  border-radius: 20px;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--crx-sky) 10%, transparent) 0%,
    color-mix(in srgb, var(--crx-yellow) 10%, transparent) 100%
  );
}

.crx-science-topics__callout-title {
  margin: 0;
  font-family: var(--crx-font);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.1em;
  color: var(--crx-dark);
}

@media (max-width: 768px) {
  .crx-science-topics {
    padding: 40px var(--crx-margin);
  }

  .crx-science-topics__panel {
    padding: 20px 0 40px;
  }

  .crx-science-topics__title {
    font-size: 20px;
  }

  .crx-science-topics__heading {
    font-size: 16px;
  }
}