/* ===== 页面专属：.page-products ===== */
.page-products {
  --page-primary: #E03A3E;
  --page-bg-card: #FFFFFF;
  --page-border-thick: 4px;
  --page-shadow-card: 0 8px 20px rgba(0, 0, 0, 0.18);
  --page-shadow-hover: 0 12px 28px rgba(0, 0, 0, 0.28);
  --page-radius-small: 4px;
  --page-gap: 24px;
  --page-gap-lg: 36px;
  --page-gap-xl: 48px;
  --page-max-width: 1280px;
  --page-breadcrumb-sep: #757575;
  --page-emph-color: #E03A3E;

  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 20px;
  font-family: var(--font-body, 'Noto Sans SC', 'Helvetica Neue', sans-serif);
  color: var(--text-primary, #121212);
  background-color: var(--bg-light, #F5F5F5);
}

/* ===== 面包屑导航 ===== */
.page-products .breadcrumb {
  padding: 16px 0 0;
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary, #757575);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.page-products .breadcrumb__link {
  color: var(--page-primary);
  text-decoration: none;
  font-weight: 500;
  transition: opacity var(--transition, 0.2s ease);
}
.page-products .breadcrumb__link:hover,
.page-products .breadcrumb__link:focus {
  opacity: 0.7;
  outline: 2px dashed var(--page-primary);
  outline-offset: 2px;
}
.page-products .breadcrumb__sep {
  color: var(--page-breadcrumb-sep);
  user-select: none;
}
.page-products .breadcrumb__current {
  font-weight: 600;
  color: var(--text-primary, #121212);
}

/* ===== 英雄区 ===== */
.page-products__hero {
  margin-bottom: var(--page-gap-xl, 48px);
  padding: 20px 0 12px;
  border-bottom: var(--page-border-thick) solid var(--page-primary);
}
.page-products__hero-title {
  font-family: var(--font-heading, 'Noto Sans SC', 'Helvetica Neue', sans-serif);
  font-weight: 900;
  font-size: 2.2rem;
  line-height: 1.2;
  margin: 0 0 8px;
  color: var(--text-primary, #121212);
  position: relative;
  display: inline-block;
}
.page-products__hero-note {
  display: inline-block;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--page-primary);
  background: var(--page-primary);
  color: #fff;
  padding: 2px 8px;
  border-radius: var(--page-radius-small);
  letter-spacing: 0.04em;
  margin-left: 10px;
  vertical-align: super;
  line-height: 1.4;
  transform: rotate(2deg);
}
.page-products__hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary, #757575);
  margin: 4px 0 0;
  max-width: 640px;
  line-height: 1.6;
}

/* ===== 通用区域标题 ===== */
.page-products__section-heading {
  font-family: var(--font-heading, 'Noto Sans SC', 'Helvetica Neue', sans-serif);
  font-weight: 900;
  font-size: 1.6rem;
  margin: 0 0 var(--page-gap, 24px);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border, #E0E0E0);
  color: var(--text-primary, #121212);
  letter-spacing: 0.02em;
}

/* ===== 功能概览网格 ===== */
.page-products__cards {
  margin-bottom: var(--page-gap-xl, 48px);
}
.page-products__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--page-gap-lg, 36px);
}
@media (min-width: 768px) {
  .page-products__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1200px) {
  .page-products__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ===== 卡片通用 ===== */
.page-products__card {
  background: var(--page-bg-card);
  border: var(--page-border-thick) solid var(--border, #E0E0E0);
  border-radius: 0;
  box-shadow: var(--page-shadow-card);
  padding: 20px;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition, 0.2s ease), transform var(--transition, 0.2s ease);
  position: relative;
}
.page-products__card[data-card-hover]:hover,
.page-products__card[data-card-hover]:focus-within {
  box-shadow: var(--page-shadow-hover);
  transform: translateY(-4px);
  border-color: var(--page-primary);
}
.page-products__card-number {
  position: absolute;
  top: 12px;
  right: 14px;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-weight: 900;
  font-size: 2rem;
  line-height: 1;
  color: var(--page-primary);
  opacity: 0.15;
  user-select: none;
  pointer-events: none;
}
.page-products__card-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  margin-bottom: 16px;
  border: 2px solid var(--border, #E0E0E0);
  aspect-ratio: 300 / 200;
}
.page-products__card-title {
  font-family: var(--font-heading, 'Noto Sans SC', 'Helvetica Neue', sans-serif);
  font-weight: 800;
  font-size: 1.25rem;
  margin: 0 0 8px;
  color: var(--text-primary, #121212);
}
.page-products__card-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary, #757575);
  margin: 0 0 16px;
  flex-grow: 1;
}
.page-products__card-link {
  align-self: flex-start;
  padding: 8px 20px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  color: #fff;
  background: var(--page-primary);
  border: 2px solid var(--page-primary);
  transition: background var(--transition, 0.2s ease), color var(--transition, 0.2s ease);
  display: inline-block;
}
.page-products__card-link:hover,
.page-products__card-link:focus {
  background: transparent;
  color: var(--page-primary);
  outline: 2px dashed var(--page-primary);
  outline-offset: 2px;
}
/* 高亮卡片（收藏） */
.page-products__card--highlight {
  border-color: var(--page-primary);
  background: #FFF5F5;
}
.page-products__card--highlight .page-products__card-number {
  opacity: 0.35;
}

/* ===== V4新特性区域 ===== */
.page-products__features {
  margin-bottom: var(--page-gap-xl, 48px);
  padding: 32px 0;
  background: var(--bg-dark, #1A1A1A);
  color: #FFFFFF;
  border: var(--page-border-thick) solid var(--page-primary);
}
.page-products__features .page-products__section-heading {
  color: #FFFFFF;
  border-bottom-color: var(--page-primary);
  padding-left: 20px;
  padding-right: 20px;
}
.page-products__features-layout {
  display: flex;
  flex-direction: column;
  gap: var(--page-gap-lg, 36px);
  padding: 0 20px;
}
@media (min-width: 992px) {
  .page-products__features-layout {
    flex-direction: row;
    align-items: center;
  }
}
.page-products__features-content {
  flex: 1 1 55%;
}
.page-products__feature-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 24px;
  font-size: 1.05rem;
  line-height: 1.5;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.page-products__feature-item:last-child {
  border-bottom: none;
}
.page-products__feature-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  line-height: 1;
  color: var(--accent, #FF6F00);
}
.page-products__feature-text {
  margin: 0;
  color: #EEEEEE;
}
.page-products__emph {
  color: var(--page-primary);
  font-weight: 800;
  text-decoration: underline wavy var(--page-primary) 1px;
}
.page-products__features-visual {
  flex: 1 1 45%;
}
.page-products__features-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  border: 2px solid var(--page-primary);
  aspect-ratio: 600 / 400;
}

/* ===== 适用场景 ===== */
.page-products__scenarios {
  margin-bottom: var(--page-gap-xl, 48px);
}
.page-products__scenario-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--page-gap, 24px);
}
@media (min-width: 768px) {
  .page-products__scenario-list {
    grid-template-columns: repeat(2, 1fr);
  }
}
.page-products__scenario-item {
  background: var(--page-bg-card);
  border-left: var(--page-border-thick) solid var(--page-primary);
  padding: 20px 24px;
  box-shadow: var(--page-shadow-card);
}
.page-products__scenario-title {
  font-family: var(--font-heading, 'Noto Sans SC', 'Helvetica Neue', sans-serif);
  font-weight: 800;
  font-size: 1.15rem;
  margin: 0 0 6px;
  color: var(--text-primary, #121212);
}
.page-products__scenario-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary, #757575);
  margin: 0;
}

/* ===== 信任声明 ===== */
.page-products__trust {
  margin-bottom: 48px;
  padding: 20px 0;
  border-top: 2px solid var(--border, #E0E0E0);
}
.page-products__trust-text {
  font-size: 0.9rem;
  color: var(--text-secondary, #757575);
  text-align: center;
  margin: 0;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* ===== 移动优先修正（窄屏不溢出） ===== */
@media (max-width: 575px) {
  .page-products {
    padding: 0 12px;
  }
  .page-products__hero-title {
    font-size: 1.6rem;
  }
  .page-products__hero-note {
    font-size: 0.65rem;
    margin-left: 6px;
  }
  .page-products__section-heading {
    font-size: 1.3rem;
  }
  .page-products__card {
    padding: 14px;
  }
  .page-products__card-number {
    font-size: 1.6rem;
    top: 8px;
    right: 10px;
  }
  .page-products__features {
    padding: 20px 0;
  }
  .page-products__features-layout {
    padding: 0 12px;
  }
  .page-products__scenario-item {
    padding: 14px 16px;
  }
}

/* ===== 桌面微调 ===== */
@media (min-width: 1200px) {
  .page-products__hero-title {
    font-size: 2.6rem;
  }
  .page-products__grid {
    gap: 28px;
  }
}