/* ===== 页面专属：APP下载 /app-download/ ===== */
.page-products {
  --chip-card-w: 280px;
  --chip-card-h: 200px;
  --chip-radius: 12px;
  --chip-border-gold: 2px solid var(--color-accent-gold);
  --chip-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
  --flip-duration: 0.6s;
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  padding-top: calc(var(--header-height, 90px) + var(--space-lg, 2rem));
  padding-bottom: var(--space-md, 1rem);
  color: var(--color-text-secondary, #b8a88a);
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.page-products .breadcrumb a {
  color: var(--color-text-secondary, #b8a88a);
  text-decoration: none;
  transition: color var(--transition, 0.3s ease);
}

.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--color-accent-gold, #c9a84c);
}

.page-products .breadcrumb__sep {
  margin: 0 0.4rem;
  color: var(--color-border-light, #3b3220);
}

.page-products [aria-current="page"] {
  color: var(--color-text-primary, #f5f0e6);
  font-weight: 500;
}

/* ---------- 首屏 ---------- */
.page-products .hero-section {
  padding: var(--space-xl, 2rem) 0;
}

.page-products .hero-section__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl, 2rem);
}

.page-products .hero-section__content {
  flex: 1 1 55%;
}

.page-products .hero-section__visual {
  flex: 0 0 auto;
  max-width: 320px;
}

.page-products .hero-section__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 400px;
  border-radius: var(--radius, 8px);
  opacity: 0.85;
  box-shadow: 0 0 60px rgba(201, 168, 76, 0.08);
}

.page-products .hero-section__desc {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #b8a88a);
  max-width: 640px;
  margin-top: var(--space-md, 1rem);
}

/* ---------- 通用标题与描述 ---------- */
.page-products .page-title {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-accent-gold, #c9a84c);
  line-height: 1.2;
  margin: 0;
  letter-spacing: 0.01em;
}

.page-products .section-title {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-accent-gold, #c9a84c);
  margin: 0 0 var(--space-sm, 0.5rem);
  line-height: 1.25;
}

.page-products .section-desc {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #b8a88a);
  max-width: 680px;
  margin: 0 0 var(--space-xl, 2rem);
}

/* ---------- 金色分隔线 ---------- */
.page-products .gold-line {
  padding: var(--space-md, 1rem) 0;
  display: flex;
  justify-content: center;
}

.page-products .gold-line__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  opacity: 0.35;
  pointer-events: none;
}

/* ---------- 版本对照区 ---------- */
.page-products .version-section {
  padding: var(--space-xl, 2rem) 0;
}

/* ---------- 故障匹配区 ---------- */
.page-products .fault-section {
  padding: var(--space-xl, 2rem) 0;
}

/* ---------- 筹码卡片网格 ---------- */
.page-products .chip-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl, 2rem);
  justify-items: center;
}

/* ---------- 筹码卡片 ---------- */
.page-products .chip-card__toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.page-products .chip-card {
  position: relative;
  display: block;
  width: 100%;
  max-width: var(--chip-card-w, 280px);
  min-height: var(--chip-card-h, 200px);
  perspective: 800px;
  cursor: pointer;
  border-radius: var(--chip-radius, 12px);
  transition: box-shadow var(--transition, 0.3s ease);
}

.page-products .chip-card:hover,
.page-products .chip-card:focus-within {
  box-shadow: 0 0 32px rgba(201, 168, 76, 0.2);
}

.page-products .chip-card__inner {
  position: relative;
  width: 100%;
  height: var(--chip-card-h, 200px);
  transform-style: preserve-3d;
  transition: transform var(--flip-duration, 0.6s) cubic-bezier(0.23, 1, 0.32, 1);
  border-radius: var(--chip-radius, 12px);
  border: var(--chip-border-gold, 2px solid #c9a84c);
  background: var(--color-bg-highlight, #2a2214);
  overflow: hidden;
}

/* 翻转态 */
.page-products .chip-card__toggle:checked + .chip-card .chip-card__inner,
.page-products .chip-card__toggle:checked + .chip-card__inner {
  transform: rotateY(180deg);
}

/* 因为 label 紧接 input，选择器为 .chip-card__toggle:checked + .chip-card */
.page-products .chip-card__toggle:checked + .chip-card .chip-card__inner {
  transform: rotateY(180deg);
}

/* ---------- 正面 / 背面 ---------- */
.page-products .chip-card__face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--chip-radius, 12px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-md, 1rem);
}

.page-products .chip-card__face--front {
  background: var(--color-bg-highlight, #2a2214);
  z-index: 2;
}

.page-products .chip-card__face--back {
  background: var(--color-bg-primary, #1a1307);
  transform: rotateY(180deg);
  z-index: 1;
  padding: var(--space-lg, 2rem) var(--space-md, 1rem);
}

/* ---------- 正面内容 ---------- */
.page-products .chip-card__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.12;
  pointer-events: none;
  border-radius: var(--chip-radius, 12px);
}

.page-products .chip-card__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs, 0.25rem);
  text-align: center;
  width: 100%;
}

.page-products .chip-card__version-label {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-secondary, #b8a88a);
}

.page-products .chip-card__version-label--new {
  color: var(--color-accent-gold, #c9a84c);
}

.page-products .chip-card__version-num {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text-primary, #f5f0e6);
  letter-spacing: 0.02em;
}

.page-products .chip-card__version-num--new {
  color: var(--color-accent-gold, #c9a84c);
}

.page-products .chip-card__arrow {
  font-size: 1.4rem;
  color: var(--color-accent-gold, #c9a84c);
  margin: var(--space-xs, 0.25rem) 0;
}

.page-products .chip-card__badge {
  display: inline-block;
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.8rem;
  border-radius: var(--radius-pill, 9999px);
  background: var(--color-accent-green, #2b4f3d);
  color: var(--color-text-primary, #f5f0e6);
  margin-top: var(--space-xs, 0.25rem);
}

.page-products .chip-card__badge--latest {
  background: var(--color-accent-gold, #c9a84c);
  color: var(--color-bg-primary, #1a1307);
}

.page-products .chip-card__hint {
  position: absolute;
  bottom: var(--space-sm, 0.5rem);
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.6rem;
  color: var(--color-text-secondary, #b8a88a);
  opacity: 0.6;
  letter-spacing: 0.06em;
  z-index: 2;
  pointer-events: none;
}

/* ---------- 背面内容 ---------- */
.page-products .chip-card__back-content {
  position: relative;
  z-index: 1;
  text-align: left;
  width: 100%;
}

.page-products .chip-card__back-title {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent-gold, #c9a84c);
  margin: 0 0 var(--space-sm, 0.5rem);
}

.page-products .chip-card__back-content p {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #b8a88a);
  margin: 0 0 var(--space-md, 1rem);
}

.page-products .chip-card__link {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent-gold, #c9a84c);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition, 0.3s ease);
}

.page-products .chip-card__link:hover,
.page-products .chip-card__link:focus-visible {
  border-bottom-color: var(--color-accent-gold, #c9a84c);
}

/* ---------- 故障卡片专属 ---------- */
.page-products .chip-card--fault .chip-card__face--front {
  justify-content: center;
}

.page-products .chip-card__icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
  margin-bottom: var(--space-xs, 0.25rem);
  opacity: 0.7;
}

.page-products .chip-card__fault-name {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary, #f5f0e6);
}

.page-products .chip-card__fault-desc-short {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.75rem;
  color: var(--color-text-secondary, #b8a88a);
  margin-top: var(--space-xs, 0.25rem);
}

/* ---------- 安全下载指引卡片 ---------- */
.page-products .guide-section {
  padding: var(--space-xl, 2rem) 0;
}

.page-products .guide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg, 2rem);
}

.page-products .guide-card {
  background: var(--color-bg-highlight, #2a2214);
  border: 1px solid var(--color-border-light, #3b3220);
  border-radius: var(--radius, 8px);
  padding: var(--space-lg, 2rem);
  transition: border-color var(--transition, 0.3s ease),
              box-shadow var(--transition, 0.3s ease);
  position: relative;
}

.page-products .guide-card:hover {
  border-color: var(--color-accent-gold, #c9a84c);
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.06);
}

.page-products .guide-card__num {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent-gold, #c9a84c);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: var(--space-sm, 0.5rem);
}

.page-products .guide-card__title {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary, #f5f0e6);
  margin: 0 0 var(--space-sm, 0.5rem);
}

.page-products .guide-card__text {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #b8a88a);
  margin: 0;
}

/* ---------- 页底引导图 ---------- */
.page-products .bottom-guide {
  padding: var(--space-xl, 2rem) 0 var(--space-md, 1rem);
  text-align: center;
}

.page-products .bottom-guide__img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  opacity: 0.3;
  pointer-events: none;
}

/* ---------- 相关链接区 ---------- */
.page-products .related-links {
  padding: var(--space-xl, 2rem) 0 var(--space-2xl, 3rem);
}

.page-products .related-links__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg, 2rem);
  text-align: center;
}

.page-products .related-links__text {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.95rem;
  color: var(--color-text-secondary, #b8a88a);
  margin: 0;
}

.page-products .related-links__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-md, 1rem);
  flex-wrap: wrap;
  justify-content: center;
}

/* ---------- 按钮覆写 ---------- */
.page-products .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.8rem;
  border-radius: var(--radius-pill, 9999px);
  text-decoration: none;
  transition: box-shadow var(--transition, 0.3s ease),
              transform var(--transition, 0.3s ease);
  border: 1px solid transparent;
}

.page-products .btn-primary {
  background: var(--color-accent-gold, #c9a84c);
  color: var(--color-bg-primary, #1a1307);
  border-color: var(--color-accent-gold, #c9a84c);
}

.page-products .btn-primary:hover,
.page-products .btn-primary:focus-visible {
  box-shadow: 0 0 24px rgba(201, 168, 76, 0.35);
  transform: translateY(-1px);
}

.page-products .btn-secondary {
  background: transparent;
  color: var(--color-accent-gold, #c9a84c);
  border-color: var(--color-accent-gold, #c9a84c);
}

.page-products .btn-secondary:hover,
.page-products .btn-secondary:focus-visible {
  box-shadow: 0 0 16px rgba(201, 168, 76, 0.15);
  transform: translateY(-1px);
}

/* ===== 响应式 ===== */

/* 平板竖屏以上 */
@media (min-width: 640px) {
  .page-products .hero-section__inner {
    flex-direction: row;
    align-items: center;
  }

  .page-products .hero-section__visual {
    max-width: 280px;
  }

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

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

  .page-products .related-links__group {
    flex-direction: row;
  }

  .page-products .page-title {
    font-size: 2.8rem;
  }

  .page-products .section-title {
    font-size: 2rem;
  }
}

/* 桌面 */
@media (min-width: 1024px) {
  .page-products .hero-section__visual {
    max-width: 360px;
  }

  .page-products .chip-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-products .guide-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-products .page-title {
    font-size: 3.2rem;
  }

  .page-products .chip-card {
    max-width: var(--chip-card-w, 280px);
  }
}

/* 窄屏防止溢出 */
@media (max-width: 480px) {
  .page-products .chip-card__version-num {
    font-size: 1.3rem;
  }

  .page-products .chip-card__face--back {
    padding: var(--space-md, 1rem);
  }

  .page-products .hero-section__img {
    max-width: 260px;
  }
}