/* ═══ 行业观察页面专属样式 — 作用域 .page-news ═══ */
.page-news {
  --news-accent-line: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  --news-card-radius: 16px;
  --news-timeline-width: 48px;
  --news-filter-radius: 24px;
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
  color: var(--color-text);
  font-family: var(--font-default);
}

/* ── 面包屑 ── */
.page-news__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
  letter-spacing: 0.01em;
}
.page-news__breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--transition-default);
}
.page-news__breadcrumb a:hover,
.page-news__breadcrumb a:focus-visible {
  color: var(--color-primary);
}
.page-news__breadcrumb-sep {
  color: var(--color-muted);
  opacity: 0.5;
}

/* ── 首屏英雄区 ── */
.page-news__hero {
  position: relative;
  padding: 2.5rem 0 3rem;
  margin-bottom: 3rem;
  border-bottom: 2px solid var(--color-glass-border);
}
.page-news__hero-title {
  font-size: clamp(2.8rem, 8vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  background: var(--news-accent-line);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-news__hero-description {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--color-muted);
  max-width: 680px;
  margin: 0;
  font-weight: 350;
}
.page-news__hero-decoration {
  position: absolute;
  right: 0;
  top: 0.5rem;
  pointer-events: none;
  opacity: 0.06;
}
.page-news__hero-number {
  font-size: 12rem;
  font-weight: 900;
  line-height: 1;
  color: var(--color-primary);
  user-select: none;
}

/* ── 通用章节 ── */
.page-news__section {
  margin-bottom: 4.5rem;
  position: relative;
}
.page-news__section:last-of-type {
  margin-bottom: 2rem;
}
.page-news__section-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.page-news__section-number {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.35;
  letter-spacing: -0.04em;
  flex-shrink: 0;
}
.page-news__section-title {
  font-size: 1.8rem;
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.page-news__section-intro {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.5;
  max-width: 620px;
  margin: 0 0 2rem 0;
  padding-left: calc(3rem + 0.75rem);
}

/* ── 最新动态 · 时间轴 ── */
.page-news__timeline {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  position: relative;
  padding-left: var(--news-timeline-width);
}
/* 时间轴竖线 */
.page-news__timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--news-accent-line);
  opacity: 0.25;
  border-radius: 1px;
}

.page-news__card {
  display: flex;
  gap: 1.25rem;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--news-card-radius);
  padding: 1.25rem 1.5rem;
  transition: background var(--transition-default), border-color var(--transition-default);
  position: relative;
}
.page-news__card:hover {
  background: var(--color-glass-hover);
  border-color: rgba(255, 107, 53, 0.15);
}
.page-news__card--with-image {
  flex-wrap: wrap;
}

.page-news__card-marker {
  position: absolute;
  left: calc(-1 * var(--news-timeline-width) + 4px);
  top: 1.25rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 4px var(--color-background), 0 0 0 6px rgba(255, 107, 53, 0.2);
  z-index: 2;
}

.page-news__card-body {
  flex: 1;
  min-width: 0;
}
.page-news__card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  margin-bottom: 0.5rem;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  color: var(--color-muted);
}
.page-news__card-tag--feature {
  border-color: rgba(255, 107, 53, 0.3);
  color: var(--color-primary);
}
.page-news__card-tag--ux {
  border-color: rgba(139, 92, 246, 0.3);
  color: var(--color-secondary);
}
.page-news__card-tag--platform {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--color-text);
}
.page-news__card-tag--feedback {
  border-color: rgba(160, 174, 192, 0.3);
  color: var(--color-muted);
}

.page-news__card-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
  line-height: 1.3;
}
.page-news__card-summary {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-muted);
  margin: 0 0 0.35rem;
}
.page-news__card-full {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text);
  padding: 0.75rem 0 0.25rem;
  border-top: 1px solid var(--color-glass-border);
  margin-top: 0.5rem;
}
.page-news__card-full p {
  margin: 0 0 0.5rem;
}
.page-news__card-full[hidden] {
  display: none;
}
.page-news__card-expand {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  transition: color var(--transition-default);
}
.page-news__card-expand:hover,
.page-news__card-expand:focus-visible {
  color: var(--color-secondary);
  text-decoration: underline;
}

/* 卡片内图片 */
.page-news__card-figure {
  margin: 0.75rem 0 0;
  width: 100%;
  flex-shrink: 0;
}
.page-news__card-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  object-fit: cover;
}
.page-news__card-caption {
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-top: 0.35rem;
  text-align: right;
  opacity: 0.7;
}

/* ── 内容索引 ── */
.page-news__filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding-left: calc(3rem + 0.75rem);
}
.page-news__filter-btn {
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  color: var(--color-muted);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.45rem 1.1rem;
  border-radius: var(--news-filter-radius);
  cursor: pointer;
  transition: all var(--transition-default);
  font-family: inherit;
}
.page-news__filter-btn:hover {
  background: var(--color-glass-hover);
  color: var(--color-text);
}
.page-news__filter-btn--active,
.page-news__filter-btn[aria-pressed="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.page-news__index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-news__index-card {
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--news-card-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.page-news__index-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 107, 53, 0.2);
}
.page-news__index-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 0.2rem 0.7rem;
  border-radius: 12px;
  align-self: flex-start;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
}
.page-news__index-tag--trend {
  border-color: rgba(255, 107, 53, 0.4);
  color: var(--color-primary);
}
.page-news__index-tag--practice {
  border-color: rgba(139, 92, 246, 0.4);
  color: var(--color-secondary);
}
.page-news__index-tag--insight {
  border-color: rgba(160, 174, 192, 0.4);
  color: var(--color-text);
}
.page-news__index-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.3;
}
.page-news__index-text {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--color-muted);
  margin: 0;
}
.page-news__index-figure {
  margin: 0.5rem 0 0;
}
.page-news__index-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  display: block;
}
.page-news__index-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  margin-top: auto;
  padding-top: 0.5rem;
  transition: color var(--transition-default);
}
.page-news__index-link:hover,
.page-news__index-link:focus-visible {
  color: var(--color-secondary);
  text-decoration: underline;
}

/* ── 用户反馈总结 ── */
.page-news__feedback-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.page-news__feedback-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  flex: 1;
}
.page-news__feedback-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--news-card-radius);
  padding: 1.25rem 1.5rem;
  transition: background var(--transition-default);
}
.page-news__feedback-item:hover {
  background: var(--color-glass-hover);
}
.page-news__feedback-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.1rem;
}
.page-news__feedback-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}
.page-news__feedback-content {
  flex: 1;
  min-width: 0;
}
.page-news__feedback-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
  line-height: 1.3;
}
.page-news__feedback-desc {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--color-muted);
  margin: 0;
}
.page-news__feedback-chart {
  margin: 0;
  text-align: center;
}
.page-news__chart-img {
  max-width: 100%;
  width: 100%;
  height: auto;
  border-radius: 16px;
  object-fit: contain;
  display: block;
}
.page-news__chart-caption {
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-top: 0.4rem;
  opacity: 0.7;
}
.page-news__feedback-cta {
  margin-top: 2rem;
  padding: 1.5rem 2rem;
  background: var(--news-accent-line);
  border-radius: var(--news-card-radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.page-news__feedback-cta p {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
}
.page-news__link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(4px);
  transition: background var(--transition-default);
}
.page-news__link-btn:hover,
.page-news__link-btn:focus-visible {
  background: rgba(255, 255, 255, 0.3);
}

/* ── 背景装饰纹理 ── */
.page-news__bg-texture {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.04;
}
.page-news__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── 移动端优先 ── */
@media (max-width: 767px) {
  .page-news {
    padding: 1.25rem 1rem 3rem;
  }
  .page-news__hero {
    padding: 1.5rem 0 2rem;
  }
  .page-news__hero-description {
    font-size: 1rem;
  }
  .page-news__hero-number {
    font-size: 6rem;
    top: 1rem;
  }
  .page-news__section-intro {
    padding-left: 0;
    margin-bottom: 1.5rem;
  }
  .page-news__section-number {
    font-size: 2.2rem;
  }
  .page-news__section-title {
    font-size: 1.4rem;
  }
  .page-news__timeline {
    padding-left: 36px;
    gap: 1.25rem;
  }
  .page-news__timeline::before {
    left: 14px;
  }
  .page-news__card-marker {
    width: 26px;
    height: 26px;
    font-size: 0.7rem;
    left: -28px;
    top: 1rem;
  }
  .page-news__card {
    padding: 1rem 1.15rem;
    flex-direction: column;
  }
  .page-news__card--with-image {
    flex-direction: column;
  }
  .page-news__card-title {
    font-size: 1.05rem;
  }
  .page-news__filter-bar {
    padding-left: 0;
    gap: 0.4rem;
  }
  .page-news__filter-btn {
    font-size: 0.75rem;
    padding: 0.35rem 0.85rem;
  }
  .page-news__index-grid {
    gap: 1rem;
  }
  .page-news__index-card {
    padding: 1.15rem;
  }
  .page-news__feedback-item {
    padding: 1rem 1.15rem;
    flex-direction: column;
    gap: 0.6rem;
  }
  .page-news__feedback-icon {
    width: 22px;
    height: 22px;
  }
  .page-news__feedback-cta {
    flex-direction: column;
    text-align: center;
    padding: 1.25rem 1.5rem;
  }
}

/* ── 桌面增强 ── */
@media (min-width: 768px) {
  .page-news__card--with-image {
    flex-wrap: nowrap;
  }
  .page-news__card-figure {
    width: 280px;
    flex-shrink: 0;
    margin: 0;
  }
  .page-news__index-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-news__feedback-layout {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-news__feedback-list {
    flex: 1;
  }
  .page-news__feedback-chart {
    width: 320px;
    flex-shrink: 0;
    margin-top: 0;
  }
}

@media (min-width: 1024px) {
  .page-news__index-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-news__feedback-chart {
    width: 380px;
  }
}