.page-products {
  --products-gold-glow: 0 0 40px rgba(212, 175, 55, 0.25);
  --products-card-radius: 12px;
  --products-cut-angle: 8deg;
  --products-step-size: 48px;
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  color: var(--color-text, #E8ECF1);
  font-family: var(--font-primary, 'Inter', 'Helvetica Neue', sans-serif);
}

/* ---------- 面包屑 ---------- */
.products-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 300;
  color: var(--color-text-secondary, #A0B0C0);
  margin-bottom: 2rem;
  letter-spacing: 0.02em;
}
.products-breadcrumb__link {
  color: var(--color-text-secondary, #A0B0C0);
  text-decoration: none;
  transition: color var(--transition, 0.25s ease);
}
.products-breadcrumb__link:hover,
.products-breadcrumb__link:focus-visible {
  color: var(--color-gold, #D4AF37);
  outline: none;
}
.products-breadcrumb__sep {
  color: var(--color-border, #2C4058);
  font-size: 0.75rem;
}
.products-breadcrumb__current {
  color: var(--color-text, #E8ECF1);
  font-weight: 400;
}

/* ---------- 首屏 Hero ---------- */
.products-hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2.5rem 1rem 3rem;
  border-bottom: 1px solid var(--color-border, #2C4058);
  overflow: hidden;
}
.products-hero__scanline {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 4px,
    rgba(212, 175, 55, 0.03) 4px,
    rgba(212, 175, 55, 0.03) 8px
  );
  animation: products-scan-drift 12s linear infinite;
}
@keyframes products-scan-drift {
  0% { background-position: 0 0; }
  100% { background-position: 80px 0; }
}
.products-hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  width: 100%;
  position: relative;
  z-index: 1;
}
.products-hero__media {
  flex-shrink: 0;
}
.products-hero__icon {
  display: block;
  width: 96px;
  height: 96px;
  border-radius: 20px;
  box-shadow: var(--products-gold-glow);
  object-fit: cover;
}
.products-hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.products-hero__tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold, #D4AF37);
  border: 1px solid var(--color-gold-dim, rgba(212, 175, 55, 0.15));
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}
.products-hero__version {
  font-size: 5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-gold, #D4AF37);
  text-shadow: var(--products-gold-glow);
  margin: 0 0 0.5rem;
}
.products-hero__desc {
  font-size: 1rem;
  font-weight: 300;
  color: var(--color-text-secondary, #A0B0C0);
  max-width: 320px;
  margin: 0 0 1.25rem;
  line-height: 1.5;
}
.products-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  justify-content: center;
}
.products-hero__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  color: #0B1A2C;
  background: linear-gradient(135deg, #D4AF37, #e6c14d);
  border: none;
  border-radius: 8px;
  text-decoration: none;
  transition: transform var(--transition, 0.25s ease), box-shadow var(--transition, 0.25s ease);
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(212, 175, 55, 0.3);
}
.products-hero__btn:hover,
.products-hero__btn:focus-visible {
  transform: scale(1.05);
  box-shadow: 0 6px 28px rgba(212, 175, 55, 0.45);
  outline: 2px solid var(--color-gold, #D4AF37);
  outline-offset: 2px;
}
.products-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-gold, #D4AF37);
  background: var(--color-gold-dim, rgba(212, 175, 55, 0.12));
  padding: 0.35rem 1rem 0.35rem 0.75rem;
  border-radius: 20px;
  border: 1px solid rgba(212, 175, 55, 0.2);
  white-space: nowrap;
}
.products-hero__badge::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-gold, #D4AF37);
  flex-shrink: 0;
}

/* ---------- 装饰分割 ---------- */
.products-divider {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  line-height: 0;
  margin: 0.5rem 0;
  opacity: 0.5;
}
.products-divider__img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 30px;
  object-fit: cover;
}

/* ---------- 通用章节标题 ---------- */
.products-section__title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text, #E8ECF1);
  margin: 0 0 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-gold-dim, rgba(212, 175, 55, 0.2));
  position: relative;
}
.products-section__title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--color-gold, #D4AF37);
}

/* ---------- 版本更新日志 ---------- */
.products-changelog {
  padding: 2rem 0;
}
.products-changelog__intro {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}
.products-changelog__fig {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: var(--products-card-radius);
  object-fit: cover;
  align-self: center;
}
.products-changelog__summary {
  font-size: 0.9375rem;
  font-weight: 300;
  color: var(--color-text-secondary, #A0B0C0);
  line-height: 1.6;
  margin: 0;
}
.products-changelog__list {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 1.5rem;
}
.products-changelog__list::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border, #2C4058);
}
.products-changelog__item {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  position: relative;
}
.products-changelog__dot {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-gold, #D4AF37);
  box-shadow: 0 0 0 4px var(--color-gold-dim, rgba(212, 175, 55, 0.15));
  position: relative;
  z-index: 1;
  margin-top: 4px;
}
.products-changelog__entry {
  flex: 1;
  min-width: 0;
}
.products-changelog__entry-title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text, #E8ECF1);
  margin: 0 0 0.25rem;
  line-height: 1.3;
}
.products-changelog__entry-desc {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--color-text-secondary, #A0B0C0);
  margin: 0;
  line-height: 1.5;
}

/* ---------- 安装须知 ---------- */
.products-install {
  padding: 2rem 0;
}
.products-install__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.products-install__panel {
  background: var(--color-card, #142A44);
  border-radius: var(--products-card-radius);
  padding: 1.5rem 1.25rem;
  border: 1px solid var(--color-border, #2C4058);
  transition: transform var(--transition, 0.25s ease), box-shadow var(--transition, 0.25s ease);
  position: relative;
  clip-path: polygon(
    0% var(--products-cut-angle),
    var(--products-cut-angle) 0%,
    100% 0%,
    100% calc(100% - var(--products-cut-angle)),
    calc(100% - var(--products-cut-angle)) 100%,
    0% 100%
  );
}
.products-install__panel:hover,
.products-install__panel:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card, 0 4px 24px rgba(0,0,0,0.3));
  border-color: var(--color-hover, #3B5E7A);
}
.products-install__panel--highlight {
  border-color: var(--color-gold-dim, rgba(212, 175, 55, 0.3));
  background: linear-gradient(135deg, var(--color-card, #142A44), rgba(212, 175, 55, 0.06));
}
.products-install__panel-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.products-install__panel-num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-gold, #D4AF37);
  font-family: var(--font-mono, 'SFMono-Regular', monospace);
  line-height: 1;
  opacity: 0.6;
}
.products-install__panel-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text, #E8ECF1);
  margin: 0;
  line-height: 1.2;
}
.products-install__panel-text {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--color-text-secondary, #A0B0C0);
  margin: 0 0 0.75rem;
  line-height: 1.6;
}
.products-install__panel-link {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-gold, #D4AF37);
  text-decoration: none;
  transition: opacity var(--transition, 0.25s ease);
}
.products-install__panel-link:hover,
.products-install__panel-link:focus-visible {
  opacity: 0.8;
  outline: none;
  text-decoration: underline;
}

/* ---------- 换设备指南 ---------- */
.products-guide {
  padding: 2rem 0;
}
.products-guide__wrapper {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.products-guide__steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.products-guide__step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem;
  background: var(--color-card, #142A44);
  border-radius: var(--products-card-radius);
  border: 1px solid var(--color-border, #2C4058);
  transition: background var(--transition, 0.25s ease);
}
.products-guide__step:hover {
  background: rgba(212, 175, 55, 0.04);
  border-color: var(--color-hover, #3B5E7A);
}
.products-guide__step-num {
  flex-shrink: 0;
  width: var(--products-step-size);
  height: var(--products-step-size);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-gold, #D4AF37);
  background: var(--color-gold-dim, rgba(212, 175, 55, 0.12));
  border-radius: 50%;
  font-family: var(--font-mono, 'SFMono-Regular', monospace);
}
.products-guide__step-content {
  flex: 1;
  min-width: 0;
}
.products-guide__step-title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text, #E8ECF1);
  margin: 0 0 0.25rem;
  line-height: 1.3;
}
.products-guide__step-desc {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--color-text-secondary, #A0B0C0);
  margin: 0;
  line-height: 1.5;
}
.products-guide__media {
  width: 100%;
  display: flex;
  justify-content: center;
}
.products-guide__img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: var(--products-card-radius);
  object-fit: cover;
  box-shadow: var(--shadow-card, 0 4px 24px rgba(0,0,0,0.3));
}
.products-guide__footnote {
  font-size: 0.8125rem;
  font-weight: 300;
  color: var(--color-text-secondary, #A0B0C0);
  margin: 1.5rem 0 0;
  text-align: center;
  line-height: 1.5;
}
.products-guide__link {
  color: var(--color-gold, #D4AF37);
  text-decoration: none;
}
.products-guide__link:hover,
.products-guide__link:focus-visible {
  text-decoration: underline;
  outline: none;
}

/* ---------- 底部导航提示 ---------- */
.products-context {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border, #2C4058);
  text-align: center;
}
.products-context__text {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--color-text-secondary, #A0B0C0);
  margin: 0;
  line-height: 1.6;
}
.products-context__text a {
  color: var(--color-gold, #D4AF37);
  text-decoration: none;
  font-weight: 400;
}
.products-context__text a:hover,
.products-context__text a:focus-visible {
  text-decoration: underline;
  outline: none;
}

/* ========== 桌面端 (≥768px) ========== */
@media (min-width: 768px) {
  .page-products {
    padding: 2rem 2.5rem 4rem;
    gap: 0;
  }
  .products-breadcrumb {
    font-size: 0.875rem;
    margin-bottom: 2.5rem;
  }
  /* 首屏左右布局 */
  .products-hero {
    flex-direction: row;
    justify-content: center;
    padding: 3rem 0 4rem;
  }
  .products-hero__inner {
    flex-direction: row;
    gap: 2.5rem;
    max-width: 800px;
  }
  .products-hero__media {
    order: -1;
  }
  .products-hero__icon {
    width: 120px;
    height: 120px;
    border-radius: 24px;
  }
  .products-hero__content {
    align-items: flex-start;
    text-align: left;
  }
  .products-hero__version {
    font-size: 6.5rem;
  }
  .products-hero__desc {
    font-size: 1.125rem;
    max-width: 400px;
  }
  .products-hero__actions {
    justify-content: flex-start;
  }
  .products-hero__btn {
    padding: 0.875rem 2.5rem;
    font-size: 1.0625rem;
  }
  .products-section__title {
    font-size: 2rem;
  }
  /* 更新日志：图文并排 */
  .products-changelog__intro {
    flex-direction: row;
    align-items: center;
    gap: 2rem;
  }
  .products-changelog__fig {
    width: 240px;
    align-self: auto;
    flex-shrink: 0;
  }
  .products-changelog__summary {
    font-size: 1rem;
  }
  .products-changelog__list {
    padding-left: 2rem;
  }
  .products-changelog__list::before {
    left: 15px;
  }
  .products-changelog__dot {
    width: 20px;
    height: 20px;
  }
  .products-changelog__item {
    padding: 1.25rem 0;
  }
  .products-changelog__entry-title {
    font-size: 1.125rem;
  }
  /* 安装须知：三列网格 */
  .products-install__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }
  .products-install__panel {
    padding: 1.75rem 1.5rem;
  }
  .products-install__panel-title {
    font-size: 1.125rem;
  }
  /* 换设备指南：图文并排 */
  .products-guide__wrapper {
    flex-direction: row;
    align-items: flex-start;
    gap: 2.5rem;
  }
  .products-guide__steps {
    flex: 1;
    gap: 1.25rem;
  }
  .products-guide__media {
    flex-shrink: 0;
    width: 380px;
    align-items: flex-start;
  }
  .products-guide__img {
    max-width: 100%;
  }
  .products-guide__step {
    padding: 1rem 1.25rem;
  }
}

/* ========== 大桌面端 (≥1024px) ========== */
@media (min-width: 1024px) {
  .page-products {
    padding: 2.5rem 3rem 5rem;
  }
  .products-hero__version {
    font-size: 8rem;
  }
  .products-hero__inner {
    gap: 3.5rem;
  }
  .products-hero__icon {
    width: 140px;
    height: 140px;
    border-radius: 28px;
  }
  .products-section__title {
    font-size: 2.25rem;
  }
  .products-changelog__fig {
    width: 280px;
  }
  .products-install__grid {
    gap: 2rem;
  }
  .products-guide__media {
    width: 420px;
  }
}

/* ========== 可访问性与焦点 ========== */
.page-products a:focus-visible,
.page-products button:focus-visible {
  outline: 2px solid var(--color-gold, #D4AF37);
  outline-offset: 2px;
}
.page-products .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========== 打印优化 ========== */
@media print {
  .page-products {
    background: #fff;
    color: #222;
    padding: 1cm;
  }
  .products-hero__scanline {
    display: none;
  }
  .products-hero__btn,
  .products-hero__badge {
    border: 1px solid #333;
    background: none;
    color: #222;
    box-shadow: none;
  }
  .products-divider {
    opacity: 0.2;
  }
}