/* ===== 产品中心页面专属样式 ===== */
.page-products {
  --card-slant-angle: 3deg;
  --card-radius: var(--radius-md);
  --timeline-line-color: var(--color-primary);
  --badge-font-size: 0.75rem;
  --step-size: 48px;
}

/* 容器重置确保一致性 */
.page-products .container-narrow,
.page-products .container-wide {
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
  width: 100%;
  box-sizing: border-box;
}

.page-products .container-narrow {
  max-width: var(--content-narrow);
}

.page-products .container-wide {
  max-width: var(--content-wide);
}

/* 面包屑 */
.page-products .breadcrumb {
  margin-bottom: var(--space-lg);
  font-size: var(--badge-font-size);
  color: var(--color-text-secondary);
}

.page-products .breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.page-products .breadcrumb li {
  display: inline;
}

.page-products .breadcrumb li + li::before {
  content: "/";
  margin-right: var(--space-xs);
  color: var(--color-text-secondary);
}

.page-products .breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--color-primary);
}

.page-products .breadcrumb li[aria-current="page"] {
  color: var(--color-white);
  font-weight: 600;
}

/* ===== 首屏 ===== */
.page-products .hero-products {
  background: var(--color-bg-dark);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.page-products .hero-products::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 40%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-accent));
  opacity: 0.5;
}

.page-products .hero-products h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
  color: var(--color-white);
  margin: 0 0 var(--space-sm);
  line-height: 1.05;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.page-products .lead-text {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-on-dark);
  margin: 0 0 var(--space-lg);
  max-width: 600px;
  line-height: 1.6;
}

/* ===== 筛选栏 ===== */
.page-products .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.page-products .filter-btn {
  display: inline-flex;
  align-items: center;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-on-dark);
  background: transparent;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  user-select: none;
  min-height: 44px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-products .filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.page-products .filter-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* 选中状态：通过 radio :checked + label 实现 */
#pf-all:checked ~ .hero-products .filter-bar label[for="pf-all"],
#pf-desktop:checked ~ .hero-products .filter-bar label[for="pf-desktop"],
#pf-mobile:checked ~ .hero-products .filter-bar label[for="pf-mobile"],
#pf-v3:checked ~ .hero-products .filter-bar label[for="pf-v3"] {
  background: var(--color-primary);
  color: var(--color-bg-dark);
  border-color: var(--color-primary);
}

/* ===== 产品卡片通用 ===== */
.page-products .product-card {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.page-products .product-card[data-platform] {
  display: block;
}

/* 筛选逻辑 - 默认全部显示 */
#pf-all:checked ~ .product-card { display: block; }

/* 电脑端筛选 */
#pf-desktop:checked ~ .product-card:not([data-platform~="desktop"]):not([data-platform~="all"]) {
  display: none;
}
#pf-desktop:checked ~ .product-card[data-platform~="desktop"],
#pf-desktop:checked ~ .product-card[data-platform~="all"] {
  display: block;
}

/* 移动端筛选 */
#pf-mobile:checked ~ .product-card:not([data-platform~="mobile"]):not([data-platform~="all"]) {
  display: none;
}
#pf-mobile:checked ~ .product-card[data-platform~="mobile"],
#pf-mobile:checked ~ .product-card[data-platform~="all"] {
  display: block;
}

/* V3版筛选 */
#pf-v3:checked ~ .product-card:not([data-platform~="v3"]):not([data-platform~="all"]) {
  display: none;
}
#pf-v3:checked ~ .product-card[data-platform~="v3"],
#pf-v3:checked ~ .product-card[data-platform~="all"] {
  display: block;
}

/* ===== 卡片布局 ===== */
.page-products .card-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  align-items: center;
}

.page-products .card-visual {
  flex-shrink: 0;
  width: 100%;
  max-width: 600px;
}

.page-products .card-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--card-radius);
  box-shadow: var(--shadow-lg);
}

.page-products .card-body {
  flex: 1;
  min-width: 0;
}

.page-products .card-badge {
  display: inline-block;
  font-size: var(--badge-font-size);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

.page-products .badge-desktop {
  background: var(--color-primary);
  color: var(--color-bg-dark);
}

.page-products .badge-mobile {
  background: var(--color-secondary);
  color: var(--color-white);
}

.page-products .badge-v3 {
  background: var(--color-accent);
  color: var(--color-white);
}

.page-products .badge-all {
  background: var(--color-white);
  color: var(--color-bg-dark);
  border: 1px solid var(--color-border-light);
}

.page-products .card-body h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 var(--space-md);
  line-height: 1.15;
  color: inherit;
}

.page-products .card-body p {
  font-size: 1rem;
  line-height: 1.7;
  margin: 0 0 var(--space-lg);
  color: inherit;
  opacity: 0.88;
}

.page-products .feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.page-products .feature-list li {
  position: relative;
  padding-left: var(--space-xl);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.page-products .feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 2px;
  transform: rotate(45deg);
}

/* ===== 斜边设计 ===== */
.page-products .card-slant-right .card-visual {
  position: relative;
  clip-path: polygon(0 0, 100% 0, 97% 100%, 0 100%);
}

.page-products .card-slant-left .card-visual {
  position: relative;
  clip-path: polygon(3% 0, 100% 0, 100% 100%, 0 100%);
}

/* ===== 卡片详情展开 ===== */
.page-products .card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
}

.page-products .card-detail {
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  background: rgba(0,0,0,0.04);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-products .card-detail p {
  margin: 0;
}

/* ===== 面板明暗变体修正 ===== */
.page-products .panel-light .card-body h2 {
  color: var(--color-text);
}

.page-products .panel-light .card-body p {
  color: var(--color-text);
}

.page-products .panel-dark .card-body h2 {
  color: var(--color-white);
}

.page-products .panel-dark .card-body p {
  color: var(--color-text-on-dark);
}

.page-products .panel-dark .feature-list li {
  color: var(--color-text-on-dark);
}

/* ===== V3版支持区 ===== */
.page-products .v3-support {
  text-align: center;
}

.page-products .v3-support h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin: var(--space-md) 0 var(--space-sm);
  color: var(--color-text);
}

.page-products .v3-intro {
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  opacity: 0.8;
}

.page-products .support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  text-align: left;
}

.page-products .support-step {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  position: relative;
  overflow: hidden;
}

.page-products .support-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
}

.page-products .support-step:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.page-products .step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--step-size);
  height: var(--step-size);
  background: var(--color-primary);
  color: var(--color-bg-dark);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

.page-products .support-step h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
}

.page-products .support-step p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text);
  opacity: 0.85;
  margin: 0;
}

.page-products .v3-extra {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.page-products .v3-img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.page-products .text-small {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.page-products .text-small a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.page-products .text-small a:hover {
  text-decoration: underline;
}

/* ===== 赛事案例合集 ===== */
.page-products .cases-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.page-products .cases-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin: var(--space-md) 0 var(--space-sm);
  color: var(--color-white);
}

.page-products .cases-subtitle {
  max-width: 640px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-on-dark);
  opacity: 0.85;
}

.page-products .timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: relative;
  padding: var(--space-lg) 0;
  margin-bottom: var(--space-xl);
}

.page-products .timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--timeline-line-color);
  transform: translateX(-50%);
  opacity: 0.3;
}

.page-products .timeline-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  position: relative;
  background: var(--color-bg-mid);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-base);
  outline: none;
}

.page-products .timeline-node:hover,
.page-products .timeline-node:focus-visible {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: scale(1.02);
}

.page-products .timeline-node:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

.page-products .timeline-year {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.page-products .timeline-preview {
  position: relative;
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-products .timeline-preview img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.page-products .timeline-count {
  position: absolute;
  bottom: var(--space-sm);
  right: var(--space-sm);
  background: rgba(0,0,0,0.75);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 600;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.page-products .cases-footer {
  text-align: center;
  margin-top: var(--space-lg);
}

/* ===== 按钮变体 ===== */
.page-products .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-xl);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  min-height: 44px;
  letter-spacing: 0.02em;
}

.page-products .btn-primary {
  background: var(--color-primary);
  color: var(--color-bg-dark);
}

.page-products .btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

.page-products .btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.page-products .btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-bg-dark);
}

.page-products .btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
}

.page-products .btn-accent:hover {
  background: var(--color-accent-dark);
  box-shadow: var(--shadow-md);
}

/* ===== 响应式：平板及以上 ===== */
@media (min-width: 768px) {
  .page-products .card-layout {
    flex-direction: row;
    align-items: center;
  }

  .page-products .card-visual {
    flex: 0 0 50%;
    max-width: 50%;
  }

  .page-products .card-slant-right .card-visual {
    margin-right: -2%;
  }

  .page-products .card-slant-left .card-visual {
    margin-left: -2%;
  }

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

  .page-products .timeline {
    flex-direction: row;
    justify-content: center;
    gap: var(--space-xl);
  }

  .page-products .timeline::before {
    left: 0;
    right: 0;
    top: 50%;
    bottom: auto;
    width: auto;
    height: 2px;
    transform: translateY(-50%);
  }

  .page-products .timeline-node {
    flex: 0 0 280px;
  }

  .page-products .v3-extra {
    flex-direction: row;
    justify-content: center;
    text-align: left;
  }

  .page-products .hero-products {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
  }

  .page-products .filter-bar {
    margin-top: var(--space-xl);
  }
}

/* ===== 响应式：桌面 ===== */
@media (min-width: 1024px) {
  .page-products .product-card {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
  }

  .page-products .card-visual {
    flex: 0 0 45%;
    max-width: 45%;
  }

  .page-products .hero-products h1 {
    font-size: 4.5rem;
  }

  .page-products .timeline-node {
    flex: 0 0 320px;
    padding: var(--space-xl);
  }
}

/* ===== 窄屏安全 ===== */
@media (max-width: 480px) {
  .page-products .filter-bar {
    gap: var(--space-xs);
  }

  .page-products .filter-btn {
    font-size: 0.75rem;
    padding: var(--space-xs) var(--space-md);
  }

  .page-products .support-step {
    padding: var(--space-md);
  }

  .page-products .timeline-node {
    padding: var(--space-md);
  }

  .page-products .card-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .page-products .card-actions .btn {
    width: 100%;
  }

  .page-products .breadcrumb {
    font-size: 0.7rem;
  }
}

/* ===== 打印优化 ===== */
@media print {
  .page-products .filter-bar,
  .page-products .card-actions,
  .page-products .cases-footer {
    display: none;
  }

  .page-products .product-card {
    break-inside: avoid;
    page-break-inside: avoid;
    padding: var(--space-lg) 0;
  }

  .page-products .timeline::before {
    display: none;
  }
}