/* ===== 行业观察页面专属样式 ===== */
.page-news {
  --color-primary: #E53935;
  --color-primary-dark: #C62828;
  --color-secondary: #FFCA28;
  --color-bg-light: #FFFFFF;
  --color-bg-dark: #424242;
  --color-bg-warm: #F5F0EB;
  --color-text-primary: #212121;
  --color-text-inverse: #FFFFFF;
  --color-accent-line: rgba(229, 57, 53, 0.4);
  --color-border-light: rgba(33, 33, 33, 0.1);
  --font-heading: 'Noto Sans SC', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-data: 'JetBrains Mono', 'Courier New', monospace;
  --max-width: 1280px;
  --gap: 24px;
  --radius: 4px;
  --transition: 0.25s ease;

  display: block;
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 24px 16px 48px;
  background-color: var(--color-bg-warm, #F5F0EB);
  color: var(--color-text-primary, #212121);
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 18px;
  line-height: 1.6;
}

/* ---- 面包屑 ---- */
.page-news__breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--color-text-primary, #212121);
  opacity: 0.75;
}
.page-news__breadcrumb a {
  color: var(--color-primary, #E53935);
  text-decoration: none;
  transition: opacity var(--transition, 0.25s ease);
}
.page-news__breadcrumb a:hover,
.page-news__breadcrumb a:focus-visible {
  opacity: 0.7;
  text-decoration: underline;
}
.page-news__breadcrumb-sep {
  display: inline-block;
  font-size: 16px;
  line-height: 1;
  color: var(--color-primary, #E53935);
  opacity: 0.5;
}
.page-news__breadcrumb [aria-current="page"] {
  font-weight: 600;
  color: var(--color-text-primary, #212121);
  opacity: 1;
}

/* ---- 页面标题 ---- */
.page-news__hero {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--color-accent-line, rgba(229, 57, 53, 0.4));
}
.page-news__hero-title {
  font-family: var(--font-heading, 'Noto Sans SC', sans-serif);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 12px;
  color: var(--color-text-primary, #212121);
  letter-spacing: -0.01em;
}
.page-news__hero-desc {
  font-size: 18px;
  line-height: 1.6;
  margin: 0;
  color: var(--color-text-primary, #212121);
  opacity: 0.8;
  max-width: 720px;
}

/* ---- 主布局：过滤栏 + 内容 ---- */
.page-news__layout {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* ---- 过滤栏 ---- */
.page-news__filter {
  flex-shrink: 0;
  width: 100%;
  padding: 20px;
  background-color: var(--color-bg-light, #FFFFFF);
  border-radius: var(--radius, 4px);
  box-shadow: 0 1px 3px rgba(33, 33, 33, 0.08);
  border-left: 4px solid var(--color-primary, #E53935);
}
.page-news__filter-group {
  margin-bottom: 20px;
}
.page-news__filter-group:last-of-type {
  margin-bottom: 0;
}
.page-news__filter-label {
  font-family: var(--font-heading, 'Noto Sans SC', sans-serif);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0 0 10px;
  color: var(--color-text-primary, #212121);
  padding-bottom: 6px;
  border-bottom: 2px solid var(--color-primary, #E53935);
  display: inline-block;
}
.page-news__filter-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-news__filter-btn {
  display: inline-block;
  padding: 6px 16px;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  border: 1px solid var(--color-border-light, rgba(33, 33, 33, 0.1));
  border-radius: 20px;
  background-color: transparent;
  color: var(--color-text-primary, #212121);
  cursor: pointer;
  transition: background-color var(--transition, 0.25s ease), color var(--transition, 0.25s ease), border-color var(--transition, 0.25s ease);
}
.page-news__filter-btn:hover {
  border-color: var(--color-primary, #E53935);
  color: var(--color-primary, #E53935);
}
.page-news__filter-btn.is-active,
.page-news__filter-btn[aria-pressed="true"] {
  background-color: var(--color-primary, #E53935);
  border-color: var(--color-primary, #E53935);
  color: var(--color-text-inverse, #FFFFFF);
}
.page-news__filter-note {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-light, rgba(33, 33, 33, 0.1));
}
.page-news__filter-note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  opacity: 0.65;
}

/* ---- 内容区 ---- */
.page-news__content {
  flex: 1;
  min-width: 0;
}

/* ---- 通用区块 ---- */
.page-news__section {
  margin-bottom: 48px;
  scroll-margin-top: 80px;
}
.page-news__section-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.page-news__section-title {
  font-family: var(--font-heading, 'Noto Sans SC', sans-serif);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.2;
  margin: 0;
  color: var(--color-text-primary, #212121);
  position: relative;
}
.page-news__section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background-color: var(--color-primary, #E53935);
  margin-top: 6px;
}
.page-news__section-badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background-color: var(--color-secondary, #FFCA28);
  color: var(--color-text-primary, #212121);
  border-radius: 2px;
  line-height: 1.3;
}
.page-news__section-footer-link {
  margin: 24px 0 0;
  font-size: 15px;
  line-height: 1.5;
  opacity: 0.85;
}
.page-news__section-footer-link a {
  color: var(--color-primary, #E53935);
  text-decoration: underline;
  font-weight: 600;
}

/* ---- 区块1：最新版本说明 ---- */
.page-news__version-card {
  background-color: var(--color-bg-light, #FFFFFF);
  border-radius: var(--radius, 4px);
  box-shadow: 0 2px 8px rgba(33, 33, 33, 0.06);
  overflow: hidden;
}
.page-news__version-figure {
  margin: 0;
  line-height: 0;
}
.page-news__version-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-news__version-body {
  padding: 24px;
}
.page-news__version-intro {
  font-size: 18px;
  line-height: 1.6;
  margin: 0 0 16px;
}
.page-news__version-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-news__version-list li {
  position: relative;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.5;
}
.page-news__version-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  background-color: var(--color-primary, #E53935);
  border-radius: 50%;
  opacity: 0.7;
}
.page-news__version-cta {
  font-size: 15px;
  line-height: 1.5;
  margin: 0;
  opacity: 0.85;
}
.page-news__version-cta a {
  color: var(--color-primary, #E53935);
  text-decoration: underline;
  font-weight: 600;
}

/* ---- 区块2：数据驱动的观赛方式 ---- */
.page-news__data-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.page-news__data-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-light, #FFFFFF);
  border-radius: var(--radius, 4px);
  box-shadow: 0 2px 8px rgba(33, 33, 33, 0.06);
  overflow: hidden;
  transition: box-shadow var(--transition, 0.25s ease), transform var(--transition, 0.25s ease);
}
.page-news__data-card:hover {
  box-shadow: 0 4px 16px rgba(33, 33, 33, 0.1);
  transform: translateY(-2px);
}
.page-news__data-card--wide {
  flex-direction: column;
}
.page-news__data-figure {
  margin: 0;
  line-height: 0;
  overflow: hidden;
}
.page-news__data-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.page-news__data-card:hover .page-news__data-img {
  transform: scale(1.03);
}
.page-news__data-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-news__data-title {
  font-family: var(--font-heading, 'Noto Sans SC', sans-serif);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
  margin: 0;
  color: var(--color-text-primary, #212121);
}
.page-news__data-title::before {
  content: '◆';
  display: inline-block;
  color: var(--color-primary, #E53935);
  margin-right: 8px;
  font-size: 14px;
  vertical-align: middle;
}
.page-news__data-summary {
  font-size: 16px;
  line-height: 1.6;
  margin: 0;
  opacity: 0.85;
}
.page-news__data-detail {
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
  opacity: 0.8;
}
.page-news__data-detail p {
  margin: 0 0 8px;
}
.page-news__data-detail p:last-child {
  margin-bottom: 0;
}
.page-news__data-stat {
  font-size: 15px;
  line-height: 1.5;
  margin: 8px 0 0;
  padding: 8px 12px;
  background-color: rgba(255, 202, 40, 0.15);
  border-left: 3px solid var(--color-secondary, #FFCA28);
  border-radius: 0 2px 2px 0;
}
.page-news__data-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  padding: 6px 16px;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-primary, #E53935);
  background-color: transparent;
  border: 1px solid var(--color-primary, #E53935);
  border-radius: 20px;
  cursor: pointer;
  transition: background-color var(--transition, 0.25s ease), color var(--transition, 0.25s ease);
  align-self: flex-start;
}
.page-news__data-toggle:hover,
.page-news__data-toggle:focus-visible {
  background-color: var(--color-primary, #E53935);
  color: var(--color-text-inverse, #FFFFFF);
}

/* ---- 区块3：专家观点 ---- */
.page-news__expert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.page-news__expert-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-light, #FFFFFF);
  border-radius: var(--radius, 4px);
  box-shadow: 0 2px 8px rgba(33, 33, 33, 0.06);
  overflow: hidden;
  transition: box-shadow var(--transition, 0.25s ease), transform var(--transition, 0.25s ease);
}
.page-news__expert-card:hover {
  box-shadow: 0 4px 16px rgba(33, 33, 33, 0.1);
  transform: translateY(-2px);
}
.page-news__expert-media {
  margin: 0;
  line-height: 0;
  overflow: hidden;
}
.page-news__expert-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.page-news__expert-card:hover .page-news__expert-img {
  transform: scale(1.03);
}
.page-news__expert-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-news__expert-title {
  font-family: var(--font-heading, 'Noto Sans SC', sans-serif);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
  margin: 0;
  color: var(--color-text-primary, #212121);
  position: relative;
  padding-bottom: 8px;
}
.page-news__expert-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 36px;
  height: 2px;
  background-color: var(--color-primary, #E53935);
  opacity: 0.6;
}
.page-news__expert-summary {
  font-size: 16px;
  line-height: 1.6;
  margin: 0;
  opacity: 0.85;
}
.page-news__expert-detail {
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
  opacity: 0.8;
}
.page-news__expert-detail p {
  margin: 0 0 8px;
}
.page-news__expert-detail p:last-child {
  margin-bottom: 0;
}

/* ---- 数据数字强调 ---- */
.page-news__data-num {
  font-family: var(--font-data, 'JetBrains Mono', monospace);
  font-size: 1.15em;
  font-weight: 700;
  color: var(--color-primary, #E53935);
  background-color: rgba(229, 57, 53, 0.08);
  padding: 0 4px;
  border-radius: 2px;
}

/* ---- 相关链接 ---- */
.page-news__related {
  margin-top: 40px;
  padding: 20px 24px;
  background-color: var(--color-bg-light, #FFFFFF);
  border-radius: var(--radius, 4px);
  box-shadow: 0 1px 3px rgba(33, 33, 33, 0.06);
  text-align: center;
}
.page-news__related p {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
}
.page-news__related a {
  color: var(--color-primary, #E53935);
  text-decoration: underline;
  font-weight: 600;
}

/* ===== 交互状态（无JS时内容完整可见） ===== */
.page-news__data-detail,
.page-news__expert-detail {
  display: block;
}
.page-news [data-expandable] .page-news__data-toggle {
  display: inline-flex;
}
.page-news__data-toggle[aria-expanded="false"] + .page-news__data-detail,
.page-news__data-toggle[aria-expanded="false"] ~ .page-news__data-detail {
  display: none;
}
/* 无JS时所有内容可见，JS通过aria-expanded控制折叠 */
.page-news .no-js .page-news__data-detail,
.page-news .no-js .page-news__expert-detail {
  display: block !important;
}

/* ===== 滚动渐入动画（基础） ===== */
.page-news__section {
  opacity: 1;
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.page-news__section[data-active] {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: no-preference) {
  .page-news__section {
    opacity: 0.6;
    transform: translateY(12px);
  }
  .page-news__section[data-active] {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 桌面端（≥768px） ===== */
@media (min-width: 768px) {
  .page-news {
    padding: 32px 24px 64px;
  }

  .page-news__hero-title {
    font-size: 48px;
  }
  .page-news__hero-desc {
    font-size: 20px;
  }

  .page-news__layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 40px;
  }

  .page-news__filter {
    width: 220px;
    position: sticky;
    top: 88px;
    padding: 24px;
  }
  .page-news__filter-list {
    flex-direction: column;
    gap: 6px;
  }
  .page-news__filter-btn {
    width: 100%;
    text-align: left;
    border-radius: var(--radius, 4px);
    padding: 8px 16px;
  }

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

  .page-news__section-title {
    font-size: 32px;
  }

  .page-news__version-body {
    padding: 32px;
  }
  .page-news__version-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 24px;
  }
  .page-news__version-intro {
    font-size: 20px;
  }

  .page-news__data-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news__data-card--wide {
    grid-column: 1 / -1;
    flex-direction: row;
  }
  .page-news__data-card--wide .page-news__data-figure {
    width: 40%;
    flex-shrink: 0;
  }
  .page-news__data-card--wide .page-news__data-body {
    width: 60%;
  }
  .page-news__data-title {
    font-size: 22px;
  }

  .page-news__expert-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news__expert-title {
    font-size: 22px;
  }
}

/* ===== 大桌面端（≥1024px） ===== */
@media (min-width: 1024px) {
  .page-news {
    padding: 40px 32px 80px;
  }

  .page-news__hero-title {
    font-size: 56px;
  }

  .page-news__filter {
    width: 260px;
    padding: 28px;
  }

  .page-news__data-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news__data-card--wide .page-news__data-figure {
    width: 35%;
  }
  .page-news__data-card--wide .page-news__data-body {
    width: 65%;
  }

  .page-news__expert-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* ===== 窄屏安全（防止横向溢出） ===== */
@media (max-width: 320px) {
  .page-news {
    padding: 16px 12px 32px;
  }
  .page-news__hero-title {
    font-size: 28px;
  }
  .page-news__section-title {
    font-size: 20px;
  }
  .page-news__data-title,
  .page-news__expert-title {
    font-size: 17px;
  }
  .page-news__version-body,
  .page-news__data-body,
  .page-news__expert-body {
    padding: 16px;
  }
  .page-news__filter {
    padding: 16px;
  }
  .page-news__filter-btn {
    font-size: 12px;
    padding: 4px 12px;
  }
  img {
    max-width: 100%;
    height: auto;
  }
}