/* ===== 页面专属CSS：品牌动态 ===== */
.page-news {
  --cat-brand: #FF4500;
  --cat-update: #1E90FF;
  --cat-insight: #FFD700;
  --cat-event: #00FF7F;
  --cat-all: #FFFFFF;
  --featured-overlay: linear-gradient(135deg, rgba(10,10,10,0.92) 0%, rgba(10,10,10,0.40) 100%);
  --list-bg-blur: 2px;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: calc(var(--header-height, 56px) + 1rem) 1rem 3rem;
  background: var(--color-bg, #0A0A0A);
  color: var(--color-text, #FFFFFF);
  font-family: var(--font-body, 'Inter', 'Noto Sans SC', sans-serif);
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  min-height: 100vh;
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.375rem 0.5rem;
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary, #B0B0B0);
  margin-bottom: 0.5rem;
}

.page-news .breadcrumb__link {
  color: var(--color-text-secondary, #B0B0B0);
  text-decoration: none;
  transition: color var(--transition, 0.25s ease);
}

.page-news .breadcrumb__link:hover,
.page-news .breadcrumb__link:focus-visible {
  color: var(--color-primary, #FF4500);
  outline: none;
  text-decoration: underline;
}

.page-news .breadcrumb__separator {
  user-select: none;
  color: var(--color-border, #333333);
}

.page-news .breadcrumb__current {
  color: var(--color-text, #FFFFFF);
  font-weight: 600;
}

/* 页面标题 */
.page-news__heading {
  font-family: var(--font-display, 'Impact', 'Arial Black', sans-serif);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text, #FFFFFF);
  margin: 0 0 0.125rem;
  line-height: 1.1;
  position: relative;
  display: inline-block;
}

.page-news__heading::after {
  content: '';
  display: block;
  width: 3.5rem;
  height: 4px;
  background: var(--color-primary, #FF4500);
  margin-top: 0.5rem;
  clip-path: polygon(0 0, 100% 0, 90% 100%, 0 100%);
}

.page-news__subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary, #B0B0B0);
  margin: 0 0 0.25rem;
  line-height: 1.5;
  max-width: 36rem;
}

/* 分类索引 */
.page-news__categories {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.625rem;
  overflow-x: auto;
  padding: 0.5rem 0 1rem;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border, #333) transparent;
  -webkit-overflow-scrolling: touch;
}

.page-news__categories::-webkit-scrollbar {
  height: 4px;
}

.page-news__categories::-webkit-scrollbar-thumb {
  background: var(--color-border, #333);
  border-radius: 2px;
}

.page-news__cat-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  padding: 0.5rem 1.125rem;
  font-family: var(--font-body, 'Inter', 'Noto Sans SC', sans-serif);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--color-text-secondary, #B0B0B0);
  background: transparent;
  border: 1.5px solid var(--color-border, #333333);
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition, 0.25s ease);
  position: relative;
  white-space: nowrap;
}

.page-news__cat-btn:focus-visible {
  outline: 2px solid var(--color-primary, #FF4500);
  outline-offset: 2px;
}

.page-news__cat-btn:hover {
  border-color: var(--color-primary, #FF4500);
  color: var(--color-text, #FFFFFF);
  background: rgba(255, 69, 0, 0.08);
}

.page-news__cat-btn--active {
  border-color: var(--color-primary, #FF4500);
  color: var(--color-text, #FFFFFF);
  background: rgba(255, 69, 0, 0.18);
  box-shadow: 0 0 0 1px rgba(255, 69, 0, 0.3);
}

.page-news__cat-icon {
  width: 1.25rem;
  height: 1.25rem;
  object-fit: contain;
  flex-shrink: 0;
  opacity: 0.8;
  display: block;
}

/* 最新动态列表 */
.page-news__list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem 0 0.5rem;
  overflow: hidden;
}

.page-news__list-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.06;
  mix-blend-mode: screen;
}

.page-news__list-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: blur(1px);
}

/* 动态条目 */
.page-news__item {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 1rem 1rem 1.25rem;
  border-left: 3px solid var(--color-border, #333333);
  border-radius: 0 var(--radius-md, 8px) var(--radius-md, 8px) 0;
  background: rgba(17, 17, 17, 0.65);
  backdrop-filter: blur(1px);
  transition: background var(--transition, 0.25s ease), border-color var(--transition, 0.25s ease), transform var(--transition, 0.25s ease);
}

.page-news__item:hover {
  background: rgba(20, 20, 20, 0.85);
  transform: translateX(0.25rem);
}

.page-news__item:focus-within {
  border-left-color: var(--color-primary, #FF4500);
  background: rgba(30, 20, 15, 0.85);
}

/* 分类色标 */
.page-news__item--brand {
  border-left-color: var(--cat-brand, #FF4500);
}

.page-news__item--update {
  border-left-color: var(--cat-update, #1E90FF);
}

.page-news__item--insight {
  border-left-color: var(--cat-insight, #FFD700);
}

.page-news__item--event {
  border-left-color: var(--cat-event, #00FF7F);
}

.page-news__item-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8125rem;
}

.page-news__item-date {
  font-family: var(--font-mono, 'Consolas', 'Source Code Pro', monospace);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary, #B0B0B0);
  background: rgba(255, 255, 255, 0.06);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm, 4px);
  white-space: nowrap;
}

.page-news__item-tag {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-secondary, #B0B0B0);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm, 4px);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.page-news__item--brand .page-news__item-tag {
  color: var(--cat-brand, #FF4500);
  border-color: rgba(255, 69, 0, 0.25);
}

.page-news__item--update .page-news__item-tag {
  color: var(--cat-update, #1E90FF);
  border-color: rgba(30, 144, 255, 0.25);
}

.page-news__item--insight .page-news__item-tag {
  color: var(--cat-insight, #FFD700);
  border-color: rgba(255, 215, 0, 0.25);
}

.page-news__item--event .page-news__item-tag {
  color: var(--cat-event, #00FF7F);
  border-color: rgba(0, 255, 127, 0.25);
}

.page-news__item-body {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.page-news__item-title {
  font-family: var(--font-display, 'Impact', 'Arial Black', sans-serif);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text, #FFFFFF);
  margin: 0;
  letter-spacing: 0.01em;
}

.page-news__item-summary {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--color-text-secondary, #B0B0B0);
  margin: 0;
  max-width: 48rem;
}

.page-news__item-thumb {
  display: none;
  flex-shrink: 0;
  border-radius: var(--radius-sm, 4px);
  overflow: hidden;
  width: 3.75rem;
  height: 3.75rem;
  margin-top: 0.25rem;
}

.page-news__item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 重点推荐 */
.page-news__featured {
  margin-top: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border, #333333);
}

.page-news__featured-heading {
  font-family: var(--font-display, 'Impact', 'Arial Black', sans-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text, #FFFFFF);
  margin: 0 0 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  position: relative;
  display: inline-block;
}

.page-news__featured-heading::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary, #FF4500), transparent);
  clip-path: polygon(0 0, 100% 0, 95% 100%, 0 100%);
}

.page-news__featured-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-news__featured-card {
  position: relative;
  border-radius: var(--radius-lg, 16px);
  overflow: hidden;
  background: var(--color-bg-alt, #111111);
  border: 1px solid var(--color-border, #333333);
  transition: transform var(--transition, 0.25s ease), box-shadow var(--transition, 0.25s ease);
}

.page-news__featured-card:hover {
  transform: scale(1.01);
  box-shadow: 0 8px 40px rgba(255, 69, 0, 0.12);
}

.page-news__featured-card:focus-within {
  outline: 2px solid var(--color-primary, #FF4500);
  outline-offset: 2px;
}

.page-news__featured-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 800 / 450;
  overflow: hidden;
}

.page-news__featured-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.page-news__featured-card:hover .page-news__featured-img,
.page-news__featured-card:focus-within .page-news__featured-img {
  transform: scale(1.04);
}

.page-news__featured-overlay {
  position: absolute;
  inset: 0;
  background: var(--featured-overlay);
  pointer-events: none;
}

.page-news__featured-content {
  position: relative;
  z-index: 2;
  padding: 1rem 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-news__featured-tag {
  align-self: flex-start;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary, #FF4500);
  background: rgba(255, 69, 0, 0.12);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  border: 1px solid rgba(255, 69, 0, 0.25);
}

.page-news__featured-title {
  font-family: var(--font-display, 'Impact', 'Arial Black', sans-serif);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text, #FFFFFF);
  margin: 0;
  letter-spacing: 0.01em;
}

.page-news__featured-desc {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--color-text-secondary, #B0B0B0);
  margin: 0;
  max-width: 36rem;
}

.page-news__featured-link {
  align-self: flex-start;
  margin-top: 0.375rem;
  text-decoration: none;
}

.page-news .btn--primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  font-family: var(--font-body, 'Inter', 'Noto Sans SC', sans-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text, #FFFFFF);
  background: var(--color-primary, #FF4500);
  border: none;
  border-radius: var(--radius-sm, 4px);
  cursor: pointer;
  transition: all var(--transition, 0.25s ease);
  text-transform: uppercase;
}

.page-news .btn--primary:hover,
.page-news .btn--primary:focus-visible {
  background: #e63d00;
  box-shadow: 0 0 24px rgba(255, 69, 0, 0.35);
  transform: translateY(-1px);
  outline: none;
}

/* ===== 平板及以上 ===== */
@media (min-width: 640px) {
  .page-news {
    padding: calc(var(--header-height, 56px) + 2rem) 2rem 4rem;
    gap: 2.5rem;
  }

  .page-news__categories {
    flex-wrap: wrap;
    overflow-x: visible;
    padding: 0.5rem 0 1.25rem;
    justify-content: flex-start;
  }

  .page-news__cat-btn {
    padding: 0.5rem 1.25rem;
    font-size: 0.9375rem;
  }

  .page-news__item {
    flex-direction: row;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 1.25rem 1.5rem 1.25rem 1.75rem;
  }

  .page-news__item-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    min-width: 6.5rem;
    flex-shrink: 0;
  }

  .page-news__item-body {
    flex: 1;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 0.5rem 1rem;
  }

  .page-news__item-title {
    font-size: 1.125rem;
    flex: 1 1 100%;
  }

  .page-news__item-summary {
    flex: 1 1 60%;
  }

  .page-news__item-thumb {
    display: block;
    width: 4.5rem;
    height: 4.5rem;
    margin-top: 0;
    margin-left: auto;
    flex-shrink: 0;
  }

  .page-news__featured-grid {
    flex-direction: row;
    gap: 1.5rem;
  }

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

  .page-news__featured-content {
    padding: 1.25rem 1.5rem 1.75rem;
  }

  .page-news__featured-title {
    font-size: 1.375rem;
  }
}

/* ===== 桌面 ===== */
@media (min-width: 1024px) {
  .page-news {
    padding: calc(var(--header-height, 56px) + 2.5rem) 2.5rem 5rem;
    gap: 3rem;
  }

  .page-news__heading {
    font-size: 3.5rem;
  }

  .page-news__subtitle {
    font-size: 1.125rem;
  }

  .page-news__categories {
    gap: 0.75rem;
    padding-bottom: 1.5rem;
  }

  .page-news__cat-btn {
    padding: 0.625rem 1.5rem;
    font-size: 1rem;
  }

  .page-news__list {
    gap: 1.25rem;
    padding: 2rem 0 1rem;
  }

  .page-news__item {
    padding: 1.5rem 2rem 1.5rem 2rem;
    gap: 1.5rem;
  }

  .page-news__item:hover {
    transform: translateX(0.5rem);
  }

  .page-news__item-title {
    font-size: 1.25rem;
  }

  .page-news__item-summary {
    font-size: 0.9375rem;
  }

  .page-news__featured {
    margin-top: 2rem;
    padding-top: 2.5rem;
  }

  .page-news__featured-heading {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
  }

  .page-news__featured-grid {
    gap: 2rem;
  }

  .page-news__featured-content {
    padding: 1.5rem 2rem 2rem;
  }

  .page-news__featured-title {
    font-size: 1.5rem;
  }

  .page-news__featured-desc {
    font-size: 0.9375rem;
  }
}

/* ===== 超宽屏 ===== */
@media (min-width: 1440px) {
  .page-news {
    padding-left: 3rem;
    padding-right: 3rem;
  }

  .page-news__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }

  .page-news__item {
    height: fit-content;
  }

  .page-news__featured-grid {
    gap: 2.5rem;
  }
}

/* ===== 打印 ===== */
@media print {
  .page-news {
    padding: 1rem;
    background: #fff;
    color: #000;
  }
  .page-news__featured-img-wrap {
    display: none;
  }
  .page-news__item-thumb {
    display: none;
  }
  .page-news .btn--primary {
    display: none;
  }
  .page-news__cat-btn {
    border-color: #ccc;
    color: #333;
  }
  .page-news__cat-btn--active {
    background: #f0f0f0;
  }
}