.page-products {
  --hero-green-glow: rgba(0, 255, 136, 0.1);
  --hero-blue-glow: rgba(0, 191, 255, 0.14);
  --gold-soft: rgba(255, 215, 0, 0.13);
  --card-line: rgba(255, 255, 255, 0.08);
  overflow-x: hidden;
}

/* ===== 首屏 ===== */
.page-products .download-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  padding-block: 3rem 4rem;
}

.page-products .download-hero__text {
  position: relative;
  z-index: 1;
}

.page-products .download-hero__kicker {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 0.75rem;
}

.page-products .download-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.page-products .download-hero__lead {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-muted);
  max-width: 28rem;
}

.page-products .download-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.page-products .download-hero__visual {
  position: relative;
  z-index: 1;
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.03), transparent 40%), var(--c-panel);
  padding: 1rem;
}

.page-products .download-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: calc(var(--radius) - 4px);
}

.page-products .download-hero__visual-label {
  display: inline-block;
  margin-top: 0.75rem;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.page-products .download-hero__cta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

.page-products .download-hero__cta .btn {
  width: 100%;
  max-width: 240px;
  text-align: center;
  text-decoration: none;
  padding-inline: 2rem;
}

.page-products .download-hero__cta-note {
  font-size: 0.875rem;
  color: var(--c-muted);
  max-width: 15rem;
  line-height: 1.5;
}

.page-products .download-hero__help-link {
  font-size: 0.875rem;
  color: var(--c-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--tr);
}

.page-products .download-hero__help-link:hover,
.page-products .download-hero__help-link:focus-visible {
  border-bottom-color: var(--c-blue);
}

/* ===== 01 版本亮点 ===== */
.page-products .product-features__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.page-products .product-features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-products .feature-card {
  padding: 1.5rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color var(--tr), transform var(--tr);
}

.page-products .feature-card:hover {
  border-color: rgba(0, 255, 136, 0.32);
  transform: translateY(-2px);
}

.page-products .feature-card__icon {
  width: 2rem;
  height: 2rem;
  margin-bottom: 0.5rem;
}

.page-products .feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-text);
}

.page-products .feature-card p {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--c-muted);
}

.page-products .product-features__visual {
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  background: var(--c-panel-deep);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-self: start;
}

.page-products .product-features__visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: calc(var(--radius) - 4px);
}

.page-products .product-features__visual-caption {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--c-muted);
}

/* ===== 02 功能矩阵 ===== */
.page-products .feature-matrix {
  position: relative;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.5), transparent 70%);
}

.page-products .feature-matrix__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}

.page-products .matrix-card {
  position: relative;
  background: var(--c-panel);
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow: hidden;
  transition: border-color var(--tr), box-shadow var(--tr), transform var(--tr);
}

.page-products .matrix-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--grad-accent);
  opacity: 0.35;
  transition: opacity var(--tr);
  pointer-events: none;
}

.page-products .matrix-card:hover,
.page-products .matrix-card:focus-within {
  border-color: rgba(0, 255, 136, 0.32);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.22);
  transform: translateY(-2px);
}

.page-products .matrix-card:hover::before,
.page-products .matrix-card:focus-within::before {
  opacity: 1;
}

.page-products .matrix-card__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.page-products .matrix-card__code {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--c-muted);
}

.page-products .matrix-card__icon {
  width: 1.5rem;
  height: 1.5rem;
  margin-left: auto;
  transition: transform var(--tr);
}

.page-products .matrix-card:hover .matrix-card__icon {
  transform: scale(1.1);
}

.page-products .matrix-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-text);
}

.page-products .matrix-card p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-products .matrix-card__image {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: calc(var(--radius) - 6px);
  border: 1px solid var(--card-line);
  margin-top: auto;
}

.page-products .feature-matrix__banner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: center;
  margin-top: 2rem;
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.05), rgba(0, 191, 255, 0.08)), var(--c-panel-deep);
  padding: 1.5rem;
}

.page-products .feature-matrix__banner img {
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border-radius: calc(var(--radius) - 6px);
  border: 1px solid var(--card-line);
}

.page-products .feature-matrix__banner-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

.page-products .feature-matrix__banner-content h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-text);
}

.page-products .feature-matrix__banner-content p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ===== 03 系统与下载 ===== */
.page-products .system-download__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.page-products .system-download__requirements {
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  background: var(--c-panel);
  overflow: hidden;
}

.page-products .requirement-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--c-line);
}

.page-products .requirement-item:last-child {
  border-bottom: 0;
}

.page-products .requirement-item__os {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--c-text);
}

.page-products .requirement-item__version {
  font-size: 0.875rem;
  color: var(--c-accent);
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid rgba(0, 255, 136, 0.22);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

.page-products .system-download__cta {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-products .system-download__cta-panel {
  border: 1px solid rgba(0, 255, 136, 0.25);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.08), rgba(0, 191, 255, 0.06)), var(--c-panel);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

.page-products .system-download__cta-label {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-products .system-download__cta .btn {
  text-decoration: none;
  padding-inline: 2.5rem;
}

.page-products .system-download__cta-note {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-products .system-download__help {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-products .system-download__help a {
  color: var(--c-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--tr);
}

.page-products .system-download__help a:hover,
.page-products .system-download__help a:focus-visible {
  border-bottom-color: var(--c-blue);
}

/* ===== 04 版本历史 ===== */
.page-products .release-history__list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.page-products .release-item {
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  background: var(--c-panel);
  transition: border-color var(--tr);
}

.page-products .release-item[open] {
  border-color: rgba(0, 255, 136, 0.28);
}

.page-products .release-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem;
  user-select: none;
}

.page-products .release-item summary::-webkit-details-marker {
  display: none;
}

.page-products .release-item summary:focus-visible {
  outline: 2px solid var(--c-blue);
  outline-offset: 2px;
  border-radius: var(--radius);
}

.page-products .release-item__name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-text);
}

.page-products .release-item__arrow {
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--c-muted);
  border-bottom: 2px solid var(--c-muted);
  transform: rotate(45deg);
  transition: transform var(--tr);
  margin-left: auto;
  flex-shrink: 0;
}

.page-products .release-item[open] .release-item__arrow {
  transform: rotate(-135deg);
}

.page-products .release-item__body {
  padding: 0 1.5rem 1.25rem;
  border-top: 1px solid var(--c-line);
}

.page-products .release-item__body ul {
  margin: 0;
  padding: 0.75rem 0 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-products .release-item__body li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-products .release-item__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--grad-accent);
}

.page-products .release-history__footer {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--c-muted);
}

.page-products .release-history__footer a {
  color: var(--c-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--tr);
}

.page-products .release-history__footer a:hover,
.page-products .release-history__footer a:focus-visible {
  border-bottom-color: var(--c-blue);
}

/* ===== 响应式 ===== */
@media (min-width: 768px) {
  .page-products .download-hero {
    grid-template-columns: 1.1fr 1fr;
    gap: 2rem;
  }

  .page-products .download-hero__cta {
    grid-column: span 2;
    flex-direction: row;
    align-items: center;
    gap: 2rem;
  }

  .page-products .download-hero__cta .btn {
    max-width: 220px;
    margin-right: 0;
  }

  .page-products .download-hero__cta-note {
    max-width: none;
  }

  .page-products .product-features__layout {
    grid-template-columns: 1fr;
  }

  .page-products .product-features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-products .product-features__visual {
    flex-direction: row;
    align-items: center;
    gap: 1.25rem;
  }

  .page-products .product-features__visual img {
    width: 45%;
    aspect-ratio: 3 / 2;
  }

  .page-products .feature-matrix__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-products .matrix-card:nth-child(1) {
    grid-column: span 2;
  }

  .page-products .matrix-card:nth-child(3) {
    grid-column: span 2;
  }

  .page-products .matrix-card:nth-child(6) {
    grid-column: span 2;
  }

  .page-products .feature-matrix__banner {
    grid-template-columns: 1fr 1.2fr;
  }

  .page-products .system-download__layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-products .download-hero {
    grid-template-columns: 1.2fr 1.3fr 0.9fr;
    padding-block: 4rem 5rem;
  }

  .page-products .download-hero__cta {
    grid-column: auto;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .page-products .download-hero__cta .btn {
    max-width: 240px;
  }

  .page-products .product-features__layout {
    grid-template-columns: 2fr 1fr;
    align-items: start;
  }

  .page-products .product-features__visual {
    flex-direction: column;
    align-items: stretch;
    position: sticky;
    top: 6rem;
  }

  .page-products .product-features__visual img {
    width: 100%;
  }

  .page-products .feature-matrix__grid {
    grid-template-columns: repeat(3, 1fr);
    grid-template-areas:
      "m01 m01 m02"
      "m03 m03 m04"
      "m05 m06 m06";
  }

  .page-products .matrix-card:nth-child(1) { grid-area: m01; }
  .page-products .matrix-card:nth-child(2) { grid-area: m02; }
  .page-products .matrix-card:nth-child(3) { grid-area: m03; }
  .page-products .matrix-card:nth-child(4) { grid-area: m04; }
  .page-products .matrix-card:nth-child(5) { grid-area: m05; }
  .page-products .matrix-card:nth-child(6) { grid-area: m06; }

  .page-products .system-download__layout {
    gap: 3rem;
  }

  .page-products .system-download__cta-panel {
    padding: 2.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .matrix-card,
  .page-products .feature-card,
  .page-products .matrix-card__icon,
  .page-products .release-item__arrow {
    transition: none;
    transform: none;
  }
}