.page-products {
  --pp-card-bg: #0D1F35;
  --pp-card-border: #2A3A5F;
  --pp-glow: #00E5FF;
  --pp-gold: #FFD700;
  --pp-text: #F0F4F8;
  --pp-muted: #8A9BB5;
  --pp-radius: 12px;
  --pp-transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: block;
  width: 100%;
  padding: 2rem 0 3rem;
  background: var(--color-primary, #0A1A2F);
  color: var(--pp-text);
  font-family: var(--font-body, 'JetBrains Mono', 'Source Han Sans SC', monospace);
}
.page-products .container {
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 1.25rem;
}
/* breadcrumb – 继承全局样式微调 */
.page-products .breadcrumb {
  margin-bottom: 1.5rem;
  font-size: 0.8rem;
  color: var(--pp-muted);
}
.page-products .breadcrumb a {
  color: var(--pp-glow);
  text-decoration: none;
  transition: color var(--pp-transition);
}
.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--pp-gold);
  outline: none;
}
.page-products .breadcrumb-sep {
  margin: 0 0.3rem;
  color: var(--pp-muted);
}
/* header */
.pp-header {
  margin-bottom: 3rem;
  border-left: 4px solid var(--pp-glow);
  padding-left: 1.25rem;
}
.pp-title {
  font-family: var(--font-heading, 'Inter', 'Noto Sans SC', sans-serif);
  font-size: 2.2rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--pp-text);
}
.pp-subtitle {
  font-size: 0.95rem;
  color: var(--pp-muted);
  margin: 0;
  letter-spacing: 0.08em;
  font-weight: 300;
}
/* section head */
.pp-section-head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-family: var(--font-heading, 'Inter', 'Noto Sans SC', sans-serif);
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--pp-text);
}
.pp-head-num {
  font-family: var(--font-body, 'JetBrains Mono', monospace);
  font-size: 1rem;
  color: var(--pp-glow);
  font-weight: 400;
  opacity: 0.8;
}
.pp-section-desc {
  font-size: 0.9rem;
  color: var(--pp-muted);
  max-width: 720px;
  margin: 0 0 1.75rem;
  line-height: 1.6;
}
/* entry grid */
.pp-entry-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 4rem;
}
.pp-card {
  background: var(--pp-card-bg);
  border: 2px solid var(--pp-card-border);
  border-radius: var(--pp-radius);
  padding: 1.5rem 1.25rem 1.25rem;
  position: relative;
  transition: border-color var(--pp-transition), box-shadow var(--pp-transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.35);
}
.pp-card:hover,
.pp-card:focus-within {
  border-color: var(--pp-glow);
  box-shadow: 0 4px 28px rgba(0,229,255,0.18);
}
.pp-card-icon {
  margin-bottom: 0.75rem;
  width: 80px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  background: rgba(0,229,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(0,229,255,0.15);
}
.pp-card-icon img {
  display: block;
  width: 80px;
  height: 80px;
  object-fit: cover;
  max-width: 100%;
  height: auto;
}
.pp-card-title {
  margin: 0 0 0.5rem;
  font-family: var(--font-heading, 'Inter', 'Noto Sans SC', sans-serif);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.3;
}
.pp-card-toggle {
  background: none;
  border: none;
  color: var(--pp-text);
  font: inherit;
  cursor: pointer;
  padding: 0;
  text-align: left;
  width: 100%;
  display: block;
  position: relative;
  transition: color var(--pp-transition);
}
.pp-card-toggle:hover,
.pp-card-toggle:focus-visible {
  color: var(--pp-glow);
  outline: none;
}
.pp-card-toggle::after {
  content: "﹀";
  display: inline-block;
  margin-left: 0.6rem;
  font-size: 0.75rem;
  color: var(--pp-glow);
  transition: transform var(--pp-transition);
}
.pp-card[data-expanded] .pp-card-toggle::after {
  transform: rotate(180deg);
}
.pp-card-body {
  font-size: 0.88rem;
  color: var(--pp-muted);
  line-height: 1.6;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(42,58,95,0.5);
}
.pp-card-body p {
  margin: 0 0 0.5rem;
}
.pp-card-list {
  margin: 0.25rem 0 0;
  padding: 0 0 0 1.25rem;
  list-style: none;
}
.pp-card-list li {
  position: relative;
  padding-left: 0.75rem;
  margin-bottom: 0.2rem;
}
.pp-card-list li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--pp-glow);
  opacity: 0.6;
}
/* version tab */
.pp-version {
  margin-bottom: 4rem;
}
.pp-tab-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--pp-card-border);
  padding-bottom: 0.5rem;
}
.pp-tab-btn {
  background: transparent;
  border: 1px solid var(--pp-card-border);
  border-radius: 6px;
  padding: 0.5rem 1.25rem;
  font-family: var(--font-body, 'JetBrains Mono', monospace);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--pp-muted);
  cursor: pointer;
  transition: all var(--pp-transition);
}
.pp-tab-btn:hover,
.pp-tab-btn:focus-visible {
  border-color: var(--pp-glow);
  color: var(--pp-text);
  outline: none;
}
.pp-tab-btn[aria-selected="true"] {
  background: rgba(0,229,255,0.12);
  border-color: var(--pp-glow);
  color: var(--pp-glow);
  box-shadow: 0 0 12px rgba(0,229,255,0.12);
}
.pp-tab-panel {
  animation: ppFadeIn 0.4s ease;
}
@keyframes ppFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.pp-version-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: flex-start;
}
.pp-version-info {
  flex: 1;
  min-width: 0;
}
.pp-version-name {
  font-family: var(--font-heading, 'Inter', 'Noto Sans SC', sans-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
  color: var(--pp-gold);
}
.pp-version-list {
  margin: 0;
  padding: 0 0 0 1.25rem;
  list-style: none;
  font-size: 0.9rem;
  color: var(--pp-muted);
  line-height: 1.7;
}
.pp-version-list li {
  position: relative;
  padding-left: 0.75rem;
}
.pp-version-list li::before {
  content: "▸";
  position: absolute;
  left: -0.75rem;
  color: var(--pp-glow);
}
.pp-version-pic {
  width: 100%;
  max-width: 500px;
  border-radius: var(--pp-radius);
  overflow: hidden;
  border: 1px solid var(--pp-card-border);
  background: rgba(0,229,255,0.04);
}
.pp-version-pic img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
/* mobile advantage */
.pp-mobile {
  margin-bottom: 3rem;
}
.pp-mobile-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}
.pp-mobile-text {
  min-width: 0;
}
.pp-mobile-lead {
  font-family: var(--font-heading, 'Inter', 'Noto Sans SC', sans-serif);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
  color: var(--pp-text);
}
.pp-mobile-list {
  margin: 0 0 1rem;
  padding: 0 0 0 1.25rem;
  list-style: none;
  font-size: 0.9rem;
  color: var(--pp-muted);
  line-height: 1.7;
}
.pp-mobile-list li {
  position: relative;
  padding-left: 0.75rem;
}
.pp-mobile-list li::before {
  content: "◆";
  position: absolute;
  left: -0.9rem;
  color: var(--pp-glow);
  font-size: 0.5rem;
  top: 0.4rem;
}
.pp-mobile-note {
  font-size: 0.85rem;
  color: var(--pp-muted);
  font-style: italic;
  border-left: 2px solid var(--pp-gold);
  padding-left: 0.75rem;
  margin: 0;
}
.pp-mobile-pic {
  width: 100%;
  max-width: 600px;
  border-radius: var(--pp-radius);
  overflow: hidden;
  border: 1px solid var(--pp-card-border);
  background: rgba(255,215,0,0.04);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.pp-mobile-pic img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
/* internal links */
.pp-internal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--pp-card-border);
}
.pp-internal-link {
  font-family: var(--font-body, 'JetBrains Mono', monospace);
  font-size: 0.8rem;
  color: var(--pp-glow);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: all var(--pp-transition);
}
.pp-internal-link:hover,
.pp-internal-link:focus-visible {
  border-color: var(--pp-glow);
  background: rgba(0,229,255,0.06);
  color: var(--pp-text);
  outline: none;
}
/* large screens */
@media (min-width: 640px) {
  .pp-entry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pp-version-layout {
    flex-direction: row;
    align-items: center;
  }
  .pp-version-pic {
    flex-shrink: 0;
    width: 50%;
  }
  .pp-mobile-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (min-width: 1024px) {
  .pp-entry-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .pp-title {
    font-size: 2.8rem;
  }
  .pp-section-head {
    font-size: 1.85rem;
  }
  .pp-version-pic {
    width: 45%;
  }
}
/* ensure hidden content is accessible via JS fallback */
.pp-card-body[hidden] {
  display: none;
}
.pp-card[data-expanded] .pp-card-body {
  display: block;
}
.pp-card:not([data-expanded]) .pp-card-body:not([hidden]) {
  display: block;
}
/* tab panel hidden state */
.pp-tab-panel[hidden] {
  display: none;
}
/* hover + focus visible ring */
.pp-card-toggle:focus-visible,
.pp-tab-btn:focus-visible,
.pp-internal-link:focus-visible {
  outline: 2px solid var(--pp-glow);
  outline-offset: 2px;
}
/* image responsive base */
.pp-card-icon img,
.pp-version-pic img,
.pp-mobile-pic img {
  max-width: 100%;
  height: auto;
}