/* ===== 页面专属：.page-products ===== */
.page-products {
  --_nav-width: 320px;
  --_skew-angle: -2deg;
  --_transition-fast: 0.2s ease-out;
  --_transition-slow: 0.35s cubic-bezier(0.25,0.46,0.45,0.94);
  --_panel-min-height: 60vh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

/* 布局容器：移动端纵向，桌面端横向 */
.products-layout {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
  position: relative;
}

/* ===== 左屏：导航索引 ===== */
.products-nav {
  position: relative;
  background: linear-gradient(135deg, #111122 0%, #1A1A2E 100%);
  border-bottom: 2px solid var(--color-border);
  padding: var(--spacing-lg) var(--spacing-md);
  width: 100%;
  flex-shrink: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), 0 100%);
  z-index: 2;
}

/* 面包屑 */
.products-breadcrumb {
  font-size: 0.75rem;
  color: var(--color-muted);
  letter-spacing: 0.03em;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.products-breadcrumb a {
  color: var(--color-blue);
  text-decoration: none;
  transition: color var(--_transition-fast);
}
.products-breadcrumb a:hover { color: var(--color-hover); }
.products-bcrumb-sep { color: var(--color-muted); }

/* 左屏标题区 */
.products-nav-header {
  margin-bottom: var(--spacing-lg);
}
.products-nav-hero {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 0;
  border: 1px solid var(--color-border);
  margin-bottom: var(--spacing-md);
  display: block;
}
.products-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 2.8rem;
  line-height: 1.05;
  letter-spacing: -0.02em;
  transform: skewX(var(--_skew-angle));
  color: var(--color-white);
  margin: 0 0 0.25rem 0;
  text-transform: uppercase;
}
.products-subtitle {
  font-size: 0.85rem;
  color: var(--color-muted);
  letter-spacing: 0.06em;
  margin: 0;
  border-left: 3px solid var(--color-brand);
  padding-left: 0.75rem;
}

/* 导航列表 */
.products-nav-list {
  list-style: none;
  margin: 0 0 var(--spacing-lg) 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.products-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: none;
  border-left: 3px solid transparent;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-muted);
  transition: all var(--_transition-fast);
  text-align: left;
  width: 100%;
  border-radius: 0;
}
.products-nav-item:hover {
  background: rgba(255,255,255,0.04);
  border-left-color: var(--color-silver);
  color: var(--color-silver);
}
.products-nav-num {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-brand);
  letter-spacing: -0.03em;
  line-height: 1;
  min-width: 2.2rem;
  transition: color var(--_transition-fast);
}
.products-nav-label {
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* 选中状态：通过 radio :checked ~ 控制 */
#tab1:checked ~ .products-nav .products-nav-list label[for="tab1"],
#tab2:checked ~ .products-nav .products-nav-list label[for="tab2"],
#tab3:checked ~ .products-nav .products-nav-list label[for="tab3"],
#tab4:checked ~ .products-nav .products-nav-list label[for="tab4"] {
  background: rgba(0,180,216,0.08);
  border-left-color: var(--color-blue);
  color: var(--color-white);
}
#tab1:checked ~ .products-nav .products-nav-list label[for="tab1"] .products-nav-num,
#tab2:checked ~ .products-nav .products-nav-list label[for="tab2"] .products-nav-num,
#tab3:checked ~ .products-nav .products-nav-list label[for="tab3"] .products-nav-num,
#tab4:checked ~ .products-nav .products-nav-list label[for="tab4"] .products-nav-num {
  color: var(--color-blue);
}

/* 指示器（仪表盘风格） */
.products-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}
.products-indicator-track {
  display: inline-block;
  width: 60px;
  height: 4px;
  background: var(--color-border);
  border-radius: 0;
  position: relative;
  overflow: hidden;
}
.products-indicator-needle {
  display: block;
  width: 33%;
  height: 100%;
  background: var(--color-blue);
  transition: transform var(--_transition-slow);
  border-radius: 0;
}
#tab1:checked ~ .products-nav .products-indicator-needle { transform: translateX(0%); }
#tab2:checked ~ .products-nav .products-indicator-needle { transform: translateX(100%); }
#tab3:checked ~ .products-nav .products-indicator-needle { transform: translateX(200%); }
#tab4:checked ~ .products-nav .products-indicator-needle { transform: translateX(300%); }
.products-indicator-text {
  font-size: 0.7rem;
  color: var(--color-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ===== 右屏：内容区 ===== */
.products-content {
  flex: 1;
  min-height: var(--_panel-min-height);
  position: relative;
  padding: var(--spacing-lg) var(--spacing-md);
  background: var(--color-bg);
}

/* 所有 panel 默认隐藏 */
.products-panel {
  display: none;
  animation: panelFadeIn 0.4s ease-out;
}
@keyframes panelFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 选中 panel 显示 */
#tab1:checked ~ .products-content #panel1,
#tab2:checked ~ .products-content #panel2,
#tab3:checked ~ .products-content #panel3,
#tab4:checked ~ .products-content #panel4 {
  display: block;
}

.products-panel-inner {
  max-width: 680px;
  margin: 0 auto;
  padding-bottom: var(--spacing-xl);
}
.products-panel-number {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 3.2rem;
  line-height: 1;
  color: var(--color-brand);
  opacity: 0.35;
  letter-spacing: -0.04em;
  margin-bottom: 0.25rem;
  transform: skewX(var(--_skew-angle));
}
.products-panel-heading {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.8rem;
  line-height: 1.15;
  color: var(--color-white);
  margin: 0 0 var(--spacing-md) 0;
  letter-spacing: -0.01em;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--spacing-sm);
}
.products-panel-desc {
  font-size: 0.95rem;
  color: var(--color-text);
  margin: 0 0 var(--spacing-lg) 0;
}
.products-panel-desc a {
  color: var(--color-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--_transition-fast);
}
.products-panel-desc a:hover { color: var(--color-hover); }
.products-panel-desc strong {
  color: var(--color-white);
  font-weight: 600;
}
.products-panel-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--color-border);
  margin: 0 0 var(--spacing-lg) 0;
  display: block;
}

/* 维度卡片（panel1） */
.products-panel-extra {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}
.products-dimension-card {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
  flex: 1 1 120px;
  transition: background var(--_transition-fast), border-color var(--_transition-fast);
}
.products-dimension-card:hover {
  background: rgba(0,180,216,0.06);
  border-color: var(--color-blue);
}
.products-dim-icon {
  display: inline-block;
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  transform: rotate(45deg);
}
.products-dim-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-silver);
  letter-spacing: 0.02em;
}

/* 评测指标列表（panel2） */
.products-metrics-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm) var(--spacing-lg);
}
.products-metrics-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text);
  letter-spacing: 0.02em;
}
.products-metric-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 0;
  transform: rotate(45deg);
  flex-shrink: 0;
}

/* 雷达标签（panel3） */
.products-radar-labels {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}
.products-radar-item {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-muted);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.75rem;
  letter-spacing: 0.03em;
  transition: all var(--_transition-fast);
  cursor: default;
  position: relative;
}
.products-radar-item:hover {
  color: var(--color-white);
  border-color: var(--color-blue);
  background: rgba(0,180,216,0.1);
}
.products-radar-item::after {
  content: attr(data-value);
  position: absolute;
  top: -1.6rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.65rem;
  color: var(--color-blue);
  opacity: 0;
  transition: opacity var(--_transition-fast);
  white-space: nowrap;
}
.products-radar-item:hover::after {
  opacity: 1;
}

/* 校准步骤（panel4） */
.products-calibration-steps {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}
.products-step {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
  flex: 1 1 130px;
  transition: all var(--_transition-fast);
}
.products-step:hover {
  border-color: var(--color-silver);
  background: rgba(255,255,255,0.04);
}
.products-step-num {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-brand);
  line-height: 1;
}
.products-step-text {
  font-size: 0.85rem;
  color: var(--color-silver);
  letter-spacing: 0.02em;
}
.products-dashboard-icon {
  width: 100%;
  max-width: 200px;
  height: auto;
  margin: var(--spacing-lg) auto 0;
  display: block;
  border: 1px solid var(--color-border);
  opacity: 0.7;
}

/* radio 隐藏 */
.products-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
  top: 0;
  left: 0;
}

/* ===== 桌面端 ≥ 960px ===== */
@media (min-width: 960px) {
  .products-layout {
    flex-direction: row;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
  }

  .products-nav {
    width: var(--_nav-width);
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    border-bottom: none;
    border-right: 2px solid var(--color-border);
    clip-path: polygon(0 0, 100% 0, calc(100% - 24px) 100%, 0 100%);
    padding: var(--spacing-xl) var(--spacing-lg);
    background: linear-gradient(160deg, #0f0f1e 0%, #1A1A2E 100%);
  }

  .products-content {
    flex: 1;
    min-height: 80vh;
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  .products-title {
    font-size: 3.6rem;
  }

  .products-panel-inner {
    padding-bottom: var(--spacing-xl);
    padding-left: var(--spacing-md);
  }

  .products-panel-number {
    font-size: 4.4rem;
  }

  .products-panel-heading {
    font-size: 2.2rem;
  }

  .products-nav-hero {
    max-height: 200px;
    object-position: center 20%;
  }

  .products-indicator {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
  }

  /* 斜切分割线装饰 */
  .products-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: -1px;
    width: 4px;
    height: 120px;
    background: linear-gradient(180deg, var(--color-brand), transparent);
    transform: skewX(-6deg);
    opacity: 0.5;
    pointer-events: none;
  }
}

/* ===== 大桌面端 ≥ 1200px ===== */
@media (min-width: 1200px) {
  .products-nav {
    width: 360px;
    padding: var(--spacing-xl) var(--spacing-xl);
  }
  .products-title {
    font-size: 4.2rem;
  }
  .products-panel-number {
    font-size: 5rem;
  }
  .products-panel-heading {
    font-size: 2.6rem;
  }
}

/* ===== 辅助：选中态视觉强化 ===== */
#tab1:checked ~ .products-nav .products-nav-item[for="tab1"] .products-nav-label,
#tab2:checked ~ .products-nav .products-nav-item[for="tab2"] .products-nav-label,
#tab3:checked ~ .products-nav .products-nav-item[for="tab3"] .products-nav-label,
#tab4:checked ~ .products-nav .products-nav-item[for="tab4"] .products-nav-label {
  color: var(--color-white);
  font-weight: 600;
}

/* 面包屑当前页高亮 */
.products-breadcrumb span[aria-current="page"] {
  color: var(--color-silver);
  font-weight: 500;
}