/* ===== 行业观察 page-news 专属样式 ===== */
.page-news {
  --news-accent: var(--color-primary-red, #E60012);
  --news-gold: var(--color-secondary-gold, #FFD700);
  --news-blue: var(--color-accent-blue, #00BFFF);
  --news-bg: var(--color-primary-black, #0A0A0A);
  --news-surface: var(--color-dark-surface, #1A1A1A);
  --news-text: var(--color-light-text, #F0F0F0);
  --news-muted: var(--color-muted-text, #999999);
  --news-font-head: var(--font-heading, Impact, 'Arial Black', sans-serif);
  --news-font-body: var(--font-body, 'Helvetica Neue', Arial, sans-serif);
  --news-font-accent: var(--font-accent, 'Courier New', monospace);
  --news-radius: var(--radius-md, 8px);
  --news-transition: var(--transition-base, 300ms ease);
  --news-gap: 24px;
  --news-container-max: 1280px;

  display: block;
  width: 100%;
  background-color: var(--news-bg);
  color: var(--news-text);
  font-family: var(--news-font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 容器 */
.page-news__container {
  max-width: var(--news-container-max);
  margin: 0 auto;
  padding: 24px 16px 64px;
}

/* 面包屑 */
.page-news__breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 13px;
  font-family: var(--news-font-accent);
  color: var(--news-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.page-news__breadcrumb a {
  color: var(--news-muted);
  text-decoration: none;
  transition: color var(--news-transition);
  position: relative;
}
.page-news__breadcrumb a::after {
  content: '';
  display: block;
  width: 0;
  height: 1px;
  background: var(--news-accent);
  transition: width var(--news-transition);
}
.page-news__breadcrumb a:hover {
  color: var(--news-accent);
}
.page-news__breadcrumb a:hover::after {
  width: 100%;
}
.page-news__breadcrumb-sep {
  color: var(--news-gold);
  font-weight: 700;
  margin: 0 2px;
}
.page-news__breadcrumb [aria-current="page"] {
  color: var(--news-text);
  font-weight: 600;
}

/* 页头 */
.page-news__header {
  margin-bottom: 40px;
  border-bottom: 2px solid var(--news-accent);
  padding-bottom: 16px;
  position: relative;
}
.page-news__header::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 80px;
  height: 2px;
  background: var(--news-gold);
}
.page-news__heading {
  font-family: var(--news-font-head);
  font-size: clamp(36px, 8vw, 64px);
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  color: var(--news-text);
  transform: skewX(-3deg);
  display: inline-block;
  background: linear-gradient(135deg, var(--news-text) 60%, var(--news-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-news__subhead {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--news-muted);
  margin: 0;
  max-width: 680px;
  line-height: 1.6;
  font-weight: 400;
}

/* ===== 标签页系统 ===== */
.page-news__tabs {
  margin-bottom: 56px;
  position: relative;
}
.page-news__tab-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

/* 标签导航 */
.page-news__tab-labels {
  display: flex;
  gap: 4px;
  margin-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding-bottom: 0;
  flex-wrap: wrap;
}
.page-news__tab-label {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  font-family: var(--news-font-head);
  font-size: clamp(14px, 1.6vw, 18px);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--news-muted);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  transition: color var(--news-transition), border-color var(--news-transition), background var(--news-transition);
  position: relative;
  white-space: nowrap;
  transform: skewX(-2deg);
}
.page-news__tab-label:hover {
  color: var(--news-text);
  background: rgba(230,0,18,0.04);
}
.page-news__tab-label:focus-visible {
  outline: 2px solid var(--news-accent);
  outline-offset: -2px;
  border-radius: 2px;
}

/* radio checked 状态 */
#tab-latest:checked ~ .page-news__tab-labels label[for="tab-latest"],
#tab-benefits:checked ~ .page-news__tab-labels label[for="tab-benefits"],
#tab-data:checked ~ .page-news__tab-labels label[for="tab-data"] {
  color: var(--news-accent);
  border-bottom-color: var(--news-accent);
  background: rgba(230,0,18,0.06);
}
#tab-latest:checked ~ .page-news__tab-labels label[for="tab-latest"]::after,
#tab-benefits:checked ~ .page-news__tab-labels label[for="tab-benefits"]::after,
#tab-data:checked ~ .page-news__tab-labels label[for="tab-data"]::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 3px;
  background: var(--news-gold);
}

/* 面板容器 */
.page-news__panels {
  position: relative;
  min-height: 300px;
}

/* 面板切换 */
.page-news__panel {
  display: none;
  animation: pageNewsFadeIn 0.35s ease forwards;
}
#tab-latest:checked ~ .page-news__panels #panel-latest,
#tab-benefits:checked ~ .page-news__panels #panel-benefits,
#tab-data:checked ~ .page-news__panels #panel-data {
  display: block;
}

@keyframes pageNewsFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 面板内部：左右两栏（杂志式） */
.page-news__panel-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

/* 左栏：文章列表 */
.page-news__article-list {
  background: var(--news-surface);
  border-radius: var(--news-radius);
  padding: 20px 16px;
  border-left: 3px solid var(--news-accent);
  position: relative;
}
.page-news__article-list::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--news-accent), transparent);
}
.page-news__list-title {
  font-family: var(--news-font-head);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--news-gold);
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.page-news__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-news__list-item {
  margin: 0;
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  border-radius: var(--radius-sm, 4px);
}
.page-news__list-item:hover {
  transform: translateX(4px);
}
.page-news__list-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  text-decoration: none;
  color: var(--news-text);
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius-sm, 4px);
  transition: background var(--news-transition), color var(--news-transition);
  font-size: 14px;
  line-height: 1.4;
  border: 1px solid transparent;
}
.page-news__list-link:hover {
  background: rgba(230,0,18,0.08);
  border-color: rgba(230,0,18,0.15);
  color: var(--news-text);
}
.page-news__list-link:focus-visible {
  outline: 2px solid var(--news-accent);
  outline-offset: 2px;
}
.page-news__list-thumb {
  width: 48px;
  height: 36px;
  border-radius: 3px;
  object-fit: cover;
  flex-shrink: 0;
  display: block;
  background: var(--news-surface);
}
.page-news__list-text {
  flex: 1;
  font-weight: 500;
}

/* 右栏：精选文章 */
.page-news__featured {
  background: var(--news-surface);
  border-radius: var(--news-radius);
  padding: 24px 20px;
  border: 1px solid rgba(255,255,255,0.06);
  position: relative;
  overflow: hidden;
}
.page-news__featured::before {
  content: '精选';
  position: absolute;
  top: 12px;
  right: 12px;
  font-family: var(--news-font-accent);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--news-gold);
  background: rgba(0,0,0,0.7);
  padding: 4px 10px;
  border-radius: 2px;
  border: 1px solid rgba(255,215,0,0.3);
}
.page-news__featured-title {
  font-family: var(--news-font-head);
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.15;
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--news-text);
  padding-right: 60px;
}
.page-news__featured-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm, 4px);
  object-fit: cover;
  margin-bottom: 16px;
  display: block;
  aspect-ratio: 800 / 500;
  background: var(--news-surface);
  border: 1px solid rgba(255,255,255,0.04);
}
.page-news__featured-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--news-text);
  margin: 0 0 20px;
  max-width: 720px;
}
.page-news__readmore {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--news-font-head);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transform: skewX(-2deg);
}
.page-news__readmore::after {
  content: '→';
  font-family: var(--news-font-body);
  transition: transform var(--news-transition);
}
.page-news__readmore:hover::after {
  transform: translateX(4px);
}

/* ===== 行业趋势速览 ===== */
.page-news__extra {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.page-news__extra-heading {
  font-family: var(--news-font-head);
  font-size: clamp(24px, 4vw, 36px);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin: 0 0 28px;
  color: var(--news-text);
  display: inline-block;
  border-bottom: 2px solid var(--news-gold);
  padding-bottom: 4px;
}
.page-news__extra-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.page-news__extra-card {
  padding: 20px;
  border-radius: var(--news-radius);
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.06);
}
.page-news__extra-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(230,0,18,0.12);
  border-color: rgba(230,0,18,0.2);
}
.page-news__extra-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm, 4px);
  object-fit: cover;
  margin-bottom: 12px;
  display: block;
  aspect-ratio: 800 / 500;
  background: var(--news-surface);
}
.page-news__extra-card-title {
  font-family: var(--news-font-head);
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin: 0 0 8px;
  color: var(--news-text);
}
.page-news__extra-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--news-muted);
  margin: 0;
}

/* ===== data-reveal 动效 ===== */
.page-news [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.page-news [data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式：平板及以上 ===== */
@media (min-width: 640px) {
  .page-news__container {
    padding: 32px 24px 80px;
  }
  .page-news__panel-inner {
    grid-template-columns: 300px 1fr;
    gap: 28px;
  }
  .page-news__article-list {
    padding: 24px 20px;
    position: sticky;
    top: 88px;
  }
  .page-news__featured {
    padding: 28px 24px;
  }
  .page-news__extra-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-news__list-link {
    font-size: 15px;
    padding: 12px 14px;
  }
  .page-news__list-thumb {
    width: 56px;
    height: 42px;
  }
}

/* ===== 响应式：桌面 ===== */
@media (min-width: 1024px) {
  .page-news__container {
    padding: 40px 32px 96px;
  }
  .page-news__panel-inner {
    grid-template-columns: 340px 1fr;
    gap: 36px;
  }
  .page-news__article-list {
    padding: 28px 24px;
  }
  .page-news__featured {
    padding: 32px 28px;
  }
  .page-news__featured-title {
    font-size: 34px;
  }
  .page-news__extra-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
  .page-news__extra-card {
    padding: 24px;
  }
  .page-news__tab-label {
    padding: 14px 32px;
    font-size: 18px;
  }
  .page-news__breadcrumb {
    font-size: 14px;
  }
}

/* ===== 暗色滚动条适配 ===== */
.page-news ::-webkit-scrollbar {
  width: 8px;
}
.page-news ::-webkit-scrollbar-track {
  background: var(--news-bg);
}
.page-news ::-webkit-scrollbar-thumb {
  background: var(--news-muted);
  border-radius: 4px;
}
.page-news ::-webkit-scrollbar-thumb:hover {
  background: var(--news-accent);
}