/* 内容区：产品、差异、原则、更多功能、下载、问答。 */

/* 产品大图 + 可点击切换。 */
.showcase {
  position: relative;
}

.showcase-stage {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-soft);
  cursor: pointer;
  transition:
    border-color 320ms var(--ease),
    transform 320ms var(--ease-out);
}

.showcase-stage:hover {
  border-color: rgba(255, 255, 255, 0.24);
  transform: translateY(-4px);
}

.showcase-stage img {
  width: 100%;
  animation: fade-swap 420ms var(--ease-out);
}

.showcase-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 16px;
  color: var(--ink-faint);
  font-size: 13.5px;
}

.showcase-dots {
  display: flex;
  gap: 8px;
}

.showcase-dot {
  width: 22px;
  height: 3px;
  border-radius: 999px;
  background: var(--ink-ghost);
  cursor: pointer;
  transition: background 240ms var(--ease);
}

.showcase-dot.is-active {
  background: var(--accent);
}

.showcase-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 40px;
}

.pill-note {
  padding: 8px 16px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 13.5px;
}

/* 差异审阅。 */
.review-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(30px, 6vw, 80px);
  align-items: center;
}

.review-copy h2 {
  font-size: clamp(26px, 3.4vw, 42px);
}

.review-copy > p {
  margin-top: 18px;
  color: var(--ink-soft);
  font-size: 16.5px;
}

.review-points {
  margin-top: 30px;
  display: grid;
  gap: 14px;
}

.review-points li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--ink-soft);
  font-size: 14.5px;
}

.review-points li::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  margin-top: 11px;
  border-radius: 50%;
  background: var(--accent);
}

/* 原则。 */
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 4vw, 56px);
}

.principle {
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.principle-index {
  display: block;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.principle h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.principle p {
  color: var(--ink-soft);
  font-size: 14.5px;
}

/* 更多功能。 */
.feature-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  max-width: 880px;
  margin: 0 auto;
}

.feature-list li {
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 14px;
  transition:
    border-color 240ms var(--ease),
    color 240ms var(--ease);
}

.feature-list li:hover {
  border-color: var(--accent);
  color: #ffffff;
}

.extras-visual {
  max-width: 980px;
  margin: clamp(40px, 6vw, 72px) auto 0;
}

/* 数据与隐私。 */
.privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(30px, 6vw, 80px);
  align-items: center;
}

.privacy-copy h2 {
  font-size: clamp(26px, 3.4vw, 42px);
}

.privacy-copy > p {
  margin-top: 18px;
  color: var(--ink-soft);
  font-size: 16.5px;
}

.privacy-list {
  margin-top: 30px;
  display: grid;
  gap: 16px;
}

.privacy-list li {
  display: grid;
  gap: 2px;
}

.privacy-list strong {
  font-size: 15.5px;
  font-weight: 600;
}

.privacy-list span {
  color: var(--ink-soft);
  font-size: 14.5px;
}

/* 下载。 */
.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.download-card {
  display: flex;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  transition:
    border-color 300ms var(--ease),
    background 300ms var(--ease),
    transform 300ms var(--ease-out);
}

.download-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.26);
  background: rgba(255, 255, 255, 0.045);
}

.download-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 2px 10px;
  margin-bottom: 8px;
}

.download-card h3 {
  font-size: 15.5px;
}

.download-size {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-faint);
  white-space: nowrap;
}

.download-note {
  flex: 1;
  margin-bottom: 16px;
  color: var(--ink-soft);
  font-size: 13.5px;
}

.download-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 26px;
}

.download-hint {
  flex: 1 1 420px;
  color: var(--ink-faint);
  font-size: 13.5px;
}

.download-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.download-links a {
  font-size: 14px;
  color: var(--ink-soft);
  transition: color 200ms var(--ease);
}

.download-links a:hover {
  color: #ffffff;
}

.release-notes {
  margin-top: 44px;
}

.release-notes-title {
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.release-notes-list {
  display: grid;
  gap: 9px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.release-notes-list li {
  position: relative;
  padding-left: 18px;
}

.release-notes-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 6px;
  height: 1px;
  background: var(--ink-faint);
}

/* 问答。 */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line-soft);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  list-style: none;
  transition: color 200ms var(--ease);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  color: var(--accent);
}

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 300;
  color: var(--ink-faint);
  transition: transform 240ms var(--ease);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 44px 24px 0;
  color: var(--ink-soft);
  font-size: 14.5px;
}

/* 结尾。 */
.cta-band {
  padding: clamp(80px, 11vw, 150px) 0;
  text-align: center;
  border-top: 1px solid var(--line-soft);
}

.cta-band h2 {
  font-size: clamp(28px, 4.6vw, 54px);
}

.cta-band p {
  margin: 18px auto 32px;
  max-width: 44ch;
  color: var(--ink-soft);
  font-size: 16.5px;
}