.page-products {
  background: var(--color-ivory);
  color: var(--color-ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}
.page-products img {
  max-width: 100%;
  height: auto;
}
.page-products .breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1rem 1.25rem 0;
  font-size: 0.875rem;
  color: var(--color-gray);
}
.page-products .breadcrumbs a {
  color: var(--color-deep-blue);
  text-decoration: none;
  font-weight: 600;
}
.page-products .breadcrumbs a:hover {
  color: var(--color-orange);
}
.page-products .section-head {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}
.page-products .section-head h2 {
  margin: 0;
  font-size: clamp(1.4rem, 3.6vw, 2.1rem);
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--color-deep-blue);
  line-height: 1.25;
}
.page-products .section-desc {
  margin: 0.5rem 0 0;
  max-width: 640px;
  color: var(--color-gray);
  line-height: 1.7;
}

/* ========= 最新版本 V2.3 ========= */
.page-products .latest-version {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1.25rem 1.25rem 2.5rem;
}
.page-products .version-hero {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 2rem;
  padding: clamp(2rem, 5vw, 4rem);
  color: var(--color-white);
  background:
    linear-gradient(rgba(212, 168, 67, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 168, 67, 0.16) 1px, transparent 1px),
    var(--color-deep-blue);
  background-size: 42px 42px, 42px 42px, auto;
  border: 1px solid rgba(212, 168, 67, 0.45);
  border-radius: 2px;
}
.page-products .version-hero::before {
  content: "BOGO / APP / REV.V2.3";
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  font-size: 0.7rem;
  letter-spacing: 3px;
  color: rgba(212, 168, 67, 0.7);
  font-weight: 700;
}
.page-products .hero-coord {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.page-products .hero-coord-code {
  font-size: 0.75rem;
  letter-spacing: 2px;
  color: rgba(247, 243, 233, 0.7);
}
.page-products .version-hero h1 {
  margin: 0.5rem 0 1.25rem;
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 2px;
  color: var(--color-white);
  word-break: break-word;
}
.page-products .version-hero .lead {
  margin: 0 0 1.5rem;
  max-width: 58ch;
  color: rgba(247, 243, 233, 0.85);
  line-height: 1.8;
}
.page-products .version-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.page-products .version-hero .btn-primary {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-white);
}
.page-products .version-hero .btn-outline {
  border-color: rgba(247, 243, 233, 0.65);
  color: var(--color-white);
}
.page-products .version-figure {
  position: relative;
  display: grid;
  gap: 1rem;
  align-content: start;
}
.page-products .version-number {
  position: absolute;
  top: -1rem;
  left: -1rem;
  z-index: 2;
  padding: 0.75rem 1.25rem;
  background: var(--color-gold);
  color: var(--color-deep-blue);
  border-radius: 2px;
  transform: rotate(-3deg);
  box-shadow: 6px 6px 0 rgba(242, 112, 35, 0.55);
}
.page-products .ver-main {
  display: block;
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: 1px;
}
.page-products .ver-sub {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
}
.page-products .version-figure img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid rgba(212, 168, 67, 0.35);
}

.page-products .version-dashboard {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 2rem;
  border: 1px solid var(--color-gold);
}
.page-products .dash-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 1.25rem;
  background: var(--color-white);
  border: 1px solid rgba(212, 168, 67, 0.28);
}
.page-products .dash-label {
  font-size: 0.75rem;
  letter-spacing: 1px;
  color: var(--color-gray);
}
.page-products .dash-value {
  font-size: clamp(1rem, 2vw, 1.4rem);
  font-weight: 900;
  color: var(--color-deep-blue);
  line-height: 1.3;
}
.page-products .dash-foot {
  font-size: 0.8rem;
  color: var(--color-gray);
}

/* ========= 下载入口 ========= */
.page-products .download-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}
.page-products .quick-guide {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}
.page-products .quick-step {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  font-size: 0.8rem;
  color: var(--color-white);
  background: var(--color-deep-blue);
  border-left: 3px solid var(--color-orange);
}
.page-products .quick-step b {
  color: var(--color-gold);
}
.page-products .download-grid {
  display: grid;
  gap: 1.5rem;
}
.page-products .qr-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.75rem;
  background: var(--color-deep-blue);
  border: 1px solid var(--color-gold);
  border-radius: 2px;
}
.page-products .qr-frame {
  display: grid;
  place-items: center;
  width: 100%;
  padding: 0.75rem;
  background: var(--color-white);
  border: 2px dashed rgba(212, 168, 67, 0.8);
}
.page-products .qr-frame img {
  width: 100%;
  max-width: 260px;
  height: auto;
  display: block;
}
.page-products .qr-caption {
  margin: 0.75rem 0 0;
  color: var(--color-gold);
  font-weight: 900;
  letter-spacing: 2px;
  font-size: 0.95rem;
}
.page-products .method-list {
  display: grid;
  gap: 0.9rem;
}
.page-products .method-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  text-decoration: none;
  color: var(--color-ink);
  background: var(--color-white);
  border: 1px solid var(--color-stone);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.page-products .method-card:hover {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}
.page-products .method-num {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--color-orange);
}
.page-products .method-copy h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 1px;
  color: var(--color-deep-blue);
}
.page-products .method-copy p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-gray);
}
.page-products .method-arrow {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--color-deep-blue);
  transition: transform 0.2s ease;
}
.page-products .method-card:hover .method-arrow {
  transform: translateX(4px);
}

/* ========= 版本历史 ========= */
.page-products .version-history {
  background: var(--color-stone);
  padding: 2rem 0 3rem;
}
.page-products .history-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}
.page-products .version-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.page-products .version-tab {
  padding: 0.6rem 1.1rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 900;
  letter-spacing: 1px;
  text-decoration: none;
  color: var(--color-deep-blue);
  background: var(--color-white);
  border: 1px solid var(--color-gold);
  border-radius: 2px;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.page-products .version-tab:hover,
.page-products .version-tab.active {
  background: var(--color-gold);
  color: var(--color-deep-blue);
  box-shadow: 4px 4px 0 rgba(242, 112, 35, 0.4);
}
.page-products .history-banner {
  margin-bottom: 1.5rem;
}
.page-products .history-banner img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(212, 168, 67, 0.35);
}
.page-products .history-layout {
  display: grid;
  gap: 1.5rem;
}
.page-products .history-rail {
  padding: 1.5rem;
  background: var(--color-white);
  border: 1px solid rgba(212, 168, 67, 0.4);
  border-radius: 2px;
}
.page-products .rail-title {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-deep-blue);
  border-bottom: 2px solid var(--color-gold);
  padding-bottom: 0.6rem;
}
.page-products .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-products .rail-list li + li {
  border-top: 1px dashed var(--color-stone);
}
.page-products .rail-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 0;
  text-decoration: none;
  color: var(--color-ink);
  font-size: 0.9rem;
  font-weight: 700;
  transition: color 0.2s ease;
}
.page-products .rail-link:hover {
  color: var(--color-orange);
}
.page-products .rail-ver {
  font-weight: 900;
  color: var(--color-gold);
  letter-spacing: 1px;
}
.page-products .rail-name {
  flex: 1;
}
.page-products .rail-tag {
  font-size: 0.7rem;
  font-weight: 400;
}
.page-products .rail-note {
  margin: 1rem 0 0;
  text-align: right;
  font-size: 0.8rem;
  letter-spacing: 1px;
  color: var(--color-gray);
}

.page-products .timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.page-products .timeline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
}
.page-products .timeline-node {
  position: relative;
  align-self: flex-start;
  padding: 0.6rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 900;
  letter-spacing: 1px;
  white-space: nowrap;
  color: var(--color-gold);
  background: var(--color-deep-blue);
  border-radius: 2px;
}
.page-products .timeline-node::after {
  content: "";
  position: absolute;
  right: -8px;
  top: 50%;
  border: 4px solid transparent;
  border-left-color: var(--color-deep-blue);
  transform: translateY(-50%);
}
.page-products .timeline-body {
  padding: 1.25rem;
  background: var(--color-white);
  border: 1px solid var(--color-stone);
  border-radius: 2px;
}
.page-products .timeline-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.page-products .timeline-head h3 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: 1px;
  font-weight: 900;
  color: var(--color-deep-blue);
}
.page-products .timeline-body ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}
.page-products .timeline-body li {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--color-gray);
}
.page-products .timeline-body li::marker {
  color: var(--color-gold);
}

/* ========= 设备兼容性 ========= */
.page-products .compatibility-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 2rem 1.25rem;
}
.page-products .compat-grid {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}
.page-products .compat-card {
  padding: 1.75rem;
  background: var(--color-white);
  border: 1px solid var(--color-stone);
  border-radius: 2px;
}
.page-products .compat-card h3 {
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: 1px;
  color: var(--color-deep-blue);
  border-bottom: 3px solid var(--color-gold);
}
.page-products .spec-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-products .spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--color-stone);
}
.page-products .spec-key {
  font-size: 0.875rem;
  color: var(--color-gray);
}
.page-products .spec-list strong {
  font-weight: 700;
  color: var(--color-ink);
  text-align: right;
}
.page-products .compat-visual {
  margin-top: 1.5rem;
}
.page-products .compat-visual img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--color-stone);
}
.page-products .compat-help {
  margin: 1.25rem 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-gray);
}
.page-products .compat-help a {
  color: var(--color-orange);
  font-weight: 700;
  text-decoration: none;
}
.page-products .compat-help a:hover {
  text-decoration: underline;
}

/* ========= 安全认证 ========= */
.page-products .security-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 2rem 1.25rem 3.5rem;
}
.page-products .security-grid {
  display: grid;
  gap: 1.25rem;
}
.page-products .security-card {
  padding: 1.5rem 1.25rem;
  text-align: center;
  background: var(--color-white);
  border: 1px solid var(--color-stone);
  border-radius: 2px;
}
.page-products .security-badge img {
  display: block;
  width: 84px;
  height: 84px;
  object-fit: contain;
  margin: 0 auto;
}
.page-products .security-svg {
  display: block;
  width: 84px;
  height: 84px;
  margin: 0 auto;
}
.page-products .security-card h3 {
  margin: 1rem 0 0.5rem;
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 1px;
  color: var(--color-deep-blue);
}
.page-products .security-card p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-gray);
}

/* ========= 帮助提示 ========= */
.page-products .page-help {
  padding: 2.5rem 1.25rem;
  background: var(--color-deep-blue);
}
.page-products .page-help-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: flex-start;
  max-width: var(--container-width);
  margin: 0 auto;
}
.page-products .page-help h2 {
  margin: 0 0 0.5rem;
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: 1px;
  color: var(--color-white);
}
.page-products .page-help p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(247, 243, 233, 0.85);
}
.page-products .page-help a {
  color: var(--color-gold);
  font-weight: 700;
  text-decoration: none;
}
.page-products .page-help a:hover {
  color: var(--color-orange);
}
.page-products .page-help .btn-primary {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-white);
  flex-shrink: 0;
}

/* ========= 桌面端布局 ========= */
@media (min-width: 900px) {
  .page-products .section-head {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
  .page-products .section-desc {
    margin-top: 0.75rem;
  }
  .page-products .version-hero {
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    gap: 3rem;
  }
  .page-products .version-dashboard {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-products .download-grid {
    grid-template-columns: 320px 1fr;
    align-items: stretch;
  }
  .page-products .download-grid .qr-block {
    position: sticky;
    top: 1rem;
  }
  .page-products .history-layout {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 1.75rem;
  }
  .page-products .history-rail {
    position: sticky;
    top: 1rem;
    align-self: start;
  }
  .page-products .compat-grid {
    grid-template-columns: 1.1fr 1fr;
  }
  .page-products .security-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-products .page-help-card {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}