/* ===== 新闻中心页面专属样式 ===== */
.page-news {
  --hero-overlay: linear-gradient(135deg, rgba(13,17,23,0.88) 30%, rgba(13,17,23,0.40) 100%);
  --timeline-line-color: #FF4500;
  --timeline-dot-size: 18px;
  --detail-radius: var(--radius-xl);
  --insight-card-radius: var(--radius-lg);
}

/* ---- 首屏区域 ---- */
.page-news .news-hero {
  position: relative;
  padding: var(--space-xl) 0 var(--space-2xl);
  overflow: hidden;
}

.page-news .news-hero-inner {
  position: relative;
  z-index: 2;
}

.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  font-size: 14px;
  color: var(--color-text-secondary);
}

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

.page-news .breadcrumb-link:hover {
  color: var(--color-primary);
}

.page-news .breadcrumb-sep {
  color: var(--color-border);
  user-select: none;
}

.page-news .breadcrumb-current {
  color: var(--color-text);
  font-weight: 600;
}

.page-news .news-hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.page-news .hero-text {
  position: relative;
}

.page-news .hero-title {
  margin: 0 0 var(--space-md);
  font-size: clamp(36px, 10vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--color-text);
}

.page-news .hero-desc {
  font-size: clamp(16px, 3vw, 22px);
  line-height: 1.5;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0;
}

.page-news .hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-height: 420px;
}

.page-news .hero-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  object-position: center 30%;
  border-radius: var(--radius-lg);
}

/* ---- 最新动态：时间线 ---- */
.page-news .timeline-section {
  padding: var(--space-3xl) 0;
}

.page-news .section-label {
  margin-bottom: var(--space-sm);
}

.page-news .section-heading {
  margin: 0 0 var(--space-sm);
  font-size: clamp(28px, 6vw, 48px);
  line-height: 1.1;
  color: var(--color-text);
}

.page-news .section-sub {
  margin: 0 0 var(--space-2xl);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: 560px;
}

.page-news .timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  padding-left: calc(var(--timeline-dot-size) + var(--space-lg));
}

.page-news .timeline::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: calc(var(--timeline-dot-size) / 2);
  width: 3px;
  background: var(--timeline-line-color);
  border-radius: var(--radius-pill);
  opacity: 0.5;
}

.page-news .timeline-item {
  position: relative;
}

.page-news .timeline-marker {
  position: absolute;
  left: calc(-1 * (var(--timeline-dot-size) + var(--space-lg) - 2px));
  top: 6px;
  width: var(--timeline-dot-size);
  height: var(--timeline-dot-size);
  border-radius: 50%;
  background: var(--timeline-line-color);
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--timeline-line-color);
  z-index: 1;
}

.page-news .timeline-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-xl);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.page-news .timeline-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.page-news .timeline-title {
  margin: 0 0 var(--space-xs);
  font-size: 20px;
  line-height: 1.3;
  color: var(--color-text);
}

.page-news .timeline-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* ---- 功能详解 ---- */
.page-news .details-section {
  padding: var(--space-3xl) 0;
}

.page-news .details-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.page-news .detail-item {
  background: var(--color-surface);
  border-radius: var(--detail-radius);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.page-news .detail-item[open] {
  box-shadow: var(--shadow-card);
}

.page-news .detail-summary {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background var(--transition-fast);
}

.page-news .detail-summary::-webkit-details-marker {
  display: none;
}

.page-news .detail-summary:hover {
  background: rgba(255,69,0,0.04);
}

.page-news .detail-index {
  font-family: var(--font-data);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  min-width: 36px;
}

.page-news .detail-title {
  flex: 1;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.page-news .detail-icon {
  position: relative;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.page-news .detail-icon::before,
.page-news .detail-icon::after {
  content: "";
  position: absolute;
  background: var(--color-primary);
  border-radius: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.page-news .detail-icon::before {
  width: 16px;
  height: 2px;
}

.page-news .detail-icon::after {
  width: 2px;
  height: 16px;
  transition: transform var(--transition-base);
}

.page-news .detail-item[open] .detail-icon {
  transform: rotate(45deg);
}

.page-news .detail-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding: 0 var(--space-xl) var(--space-xl);
  animation: detail-fade-in var(--transition-slow) ease;
}

@keyframes detail-fade-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-news .detail-text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.page-news .detail-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg);
}

.page-news .detail-image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* ---- 行业观察 ---- */
.page-news .insight-section {
  padding: var(--space-3xl) 0;
}

.page-news .insight-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.page-news .insight-card {
  padding: var(--space-xl);
  border-radius: var(--insight-card-radius);
  background: var(--color-surface);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.page-news .insight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.page-news .insight-card-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.page-news .insight-num {
  font-family: var(--font-data);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  flex-shrink: 0;
}

.page-news .insight-title {
  margin: 0;
  font-size: 20px;
  line-height: 1.3;
  color: var(--color-text);
}

.page-news .insight-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ---- CTA 区域 ---- */
.page-news .cta-section {
  padding: var(--space-2xl) 0 var(--space-4xl);
}

.page-news .cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-lg);
}

.page-news .cta-label {
  font-family: var(--font-heading);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin: 0;
}

.page-news .cta-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
}

.page-news .cta-links .btn {
  min-width: 120px;
}

/* ---- 响应式 ---- */
@media (max-width: 599px) {
  .page-news .news-hero {
    padding: var(--space-lg) 0 var(--space-xl);
  }
  .page-news .hero-visual {
    max-height: 240px;
  }
  .page-news .hero-img {
    max-height: 240px;
  }
  .page-news .timeline {
    padding-left: calc(var(--timeline-dot-size) + var(--space-md));
  }
  .page-news .timeline-marker {
    left: calc(-1 * (var(--timeline-dot-size) + var(--space-md) - 2px));
  }
  .page-news .timeline-card {
    padding: var(--space-md) var(--space-lg);
  }
  .page-news .detail-summary {
    padding: var(--space-md) var(--space-lg);
  }
  .page-news .detail-body {
    padding: 0 var(--space-lg) var(--space-lg);
  }
  .page-news .insight-card {
    padding: var(--space-lg);
  }
  .page-news .cta-links {
    flex-direction: column;
    align-items: center;
  }
  .page-news .cta-links .btn {
    width: 100%;
    max-width: 280px;
  }
}

@media (min-width: 600px) and (max-width: 1023px) {
  .page-news .hero-visual {
    max-height: 320px;
  }
  .page-news .hero-img {
    max-height: 320px;
  }
  .page-news .insight-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news .detail-body {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-news .detail-text {
    flex: 1;
  }
  .page-news .detail-image {
    flex: 0 0 40%;
    max-width: 360px;
  }
}

@media (min-width: 1024px) {
  .page-news .news-hero-content {
    flex-direction: row;
    align-items: center;
    gap: var(--space-3xl);
  }
  .page-news .hero-text {
    flex: 0 0 45%;
  }
  .page-news .hero-visual {
    flex: 0 0 50%;
    max-height: 480px;
  }
  .page-news .hero-img {
    max-height: 480px;
  }
  .page-news .timeline {
    padding-left: calc(var(--timeline-dot-size) + var(--space-2xl));
    max-width: 800px;
  }
  .page-news .timeline-marker {
    left: calc(-1 * (var(--timeline-dot-size) + var(--space-2xl) - 2px));
  }
  .page-news .detail-body {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-2xl);
  }
  .page-news .detail-text {
    flex: 1;
  }
  .page-news .detail-image {
    flex: 0 0 45%;
    max-width: 480px;
  }
  .page-news .insight-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}