/* ============================================
   page-news 专属样式
   作用域：.page-news
   ============================================ */
.page-news {
  --news-accent: #FF5A00;
  --news-neon: #8A2BE2;
  --news-card-bg: #1A2A3E;
  --news-bg: #0B1B2D;
  --news-text: #FFFFFF;
  --news-muted: #B0B0B0;
  --news-border: #C0C0C0;
  --news-radius: 6px;
  --news-transition: 0.25s ease;
}

/* ---------- 容器 ---------- */
.page-news .container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.25rem;
  width: 100%;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  gap: 3rem;
  padding-top: 1.5rem;
  padding-bottom: 3rem;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  color: var(--news-muted);
  margin-bottom: 0.25rem;
}

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

.page-news .breadcrumb-link:hover,
.page-news .breadcrumb-link:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--news-accent);
  outline-offset: 2px;
}

.page-news .breadcrumb-sep {
  color: var(--news-muted);
  font-size: 0.75rem;
}

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

/* ---------- 页面标题 ---------- */
.page-news .news-header {
  position: relative;
  padding: 1rem 0 1.5rem;
  margin-bottom: 0.5rem;
}

.page-news .news-headline {
  font-family: var(--font-heading, 'Impact', sans-serif);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--news-text);
  margin: 0 0 0.5rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  position: relative;
  display: inline-block;
  background: linear-gradient(135deg, var(--news-text) 60%, var(--news-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-news .news-subtitle {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1.05rem;
  color: var(--news-muted);
  line-height: 1.6;
  max-width: 640px;
  margin: 0.25rem 0 1.25rem;
}

/* 速度线装饰 */
.page-news .speed-line {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  width: 180px;
  background: linear-gradient(90deg, var(--news-accent), transparent);
  border-radius: 2px;
}

.page-news .speed-line--alt {
  width: 80px;
  bottom: -6px;
  left: 0;
  background: linear-gradient(90deg, var(--news-neon), transparent);
  height: 2px;
}

/* ---------- 通用板块 ---------- */
.page-news .section-block {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-news .section-label-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.page-news .section-title {
  font-family: var(--font-heading, 'Impact', sans-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--news-text);
  margin: 0;
  line-height: 1.2;
  letter-spacing: 0.02em;
  position: relative;
}

.page-news .section-title::after {
  content: '';
  display: inline-block;
  width: 0.5rem;
  height: 1.4rem;
  margin-left: 0.5rem;
  background: var(--news-accent);
  transform: skewX(-15deg);
  vertical-align: middle;
}

/* ---------- Tag 标签 ---------- */
.page-news .tag {
  display: inline-block;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  background: var(--news-border);
  color: #0B1B2D;
  line-height: 1.4;
}

.page-news .tag--neon {
  background: var(--news-neon);
  color: #fff;
}

/* ========== 功能更新区 ========== */
.page-news .feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-news .feature-card {
  background: var(--news-card-bg);
  border: 1px solid rgba(192, 192, 192, 0.15);
  border-radius: var(--news-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform var(--news-transition), box-shadow var(--news-transition), border-color var(--news-transition);
  position: relative;
  overflow: hidden;
}

.page-news .feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--news-accent);
  opacity: 0;
  transition: opacity var(--news-transition);
}

.page-news .feature-card:hover,
.page-news .feature-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(255, 90, 0, 0.15);
  border-color: rgba(255, 90, 0, 0.3);
}

.page-news .feature-card:hover::before,
.page-news .feature-card:focus-within::before {
  opacity: 1;
}

.page-news .feature-card--primary {
  border-color: rgba(255, 90, 0, 0.25);
}

.page-news .feature-icon {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: 4px;
  background: rgba(255, 90, 0, 0.08);
  padding: 0.5rem;
  flex-shrink: 0;
}

.page-news .feature-card-title {
  font-family: var(--font-heading, 'Impact', sans-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--news-text);
  margin: 0;
  line-height: 1.3;
}

.page-news .feature-card-summary {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.95rem;
  color: var(--news-muted);
  line-height: 1.6;
  margin: 0;
}

/* ---------- Accordion (可展开) ---------- */
.page-news .accordion {
  margin-top: 0.25rem;
  border-top: 1px solid rgba(192, 192, 192, 0.1);
  padding-top: 0.75rem;
}

.page-news .accordion-trigger {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--news-accent);
  cursor: pointer;
  padding: 0.25rem 0;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color var(--news-transition);
}

.page-news .accordion-trigger::-webkit-details-marker {
  display: none;
}

.page-news .accordion-trigger::after {
  content: '▸';
  font-size: 0.75rem;
  transition: transform var(--news-transition);
}

.page-news .accordion[open] .accordion-trigger::after {
  transform: rotate(90deg);
}

.page-news .accordion-trigger:hover,
.page-news .accordion-trigger:focus-visible {
  color: var(--news-text);
  outline: 2px solid var(--news-accent);
  outline-offset: 2px;
}

.page-news .accordion-content {
  padding: 0.75rem 0 0.25rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.9rem;
  color: var(--news-text);
  line-height: 1.65;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-news .accordion-content p {
  margin: 0;
}

/* ---------- 按钮 ---------- */
.page-news .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.45rem 1rem;
  border-radius: 3px;
  background: var(--news-accent);
  color: #fff;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  clip-path: polygon(0 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.page-news .btn:hover,
.page-news .btn:focus-visible {
  transform: scale(1.04);
  box-shadow: 0 4px 14px rgba(255, 90, 0, 0.35);
  outline: 2px solid var(--news-text);
  outline-offset: 2px;
}

.page-news .btn-sm {
  font-size: 0.78rem;
  padding: 0.35rem 0.85rem;
}

.page-news .btn-outline {
  background: transparent;
  border: 1.5px solid var(--news-border);
  color: var(--news-text);
  clip-path: none;
  border-radius: 3px;
}

.page-news .btn-outline:hover,
.page-news .btn-outline:focus-visible {
  background: rgba(255, 90, 0, 0.08);
  border-color: var(--news-accent);
  color: var(--news-accent);
  box-shadow: 0 4px 14px rgba(255, 90, 0, 0.12);
}

/* ========== 服务优化区 ========== */
.page-news .optimization-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-news .opt-card {
  background: var(--news-card-bg);
  border: 1px solid rgba(192, 192, 192, 0.12);
  border-radius: var(--news-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--news-transition), box-shadow var(--news-transition);
}

.page-news .opt-card:hover {
  border-color: rgba(255, 90, 0, 0.2);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.page-news .opt-card--img {
  padding: 0;
  overflow: hidden;
}

.page-news .opt-image {
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  display: block;
  aspect-ratio: 4 / 3;
}

.page-news .opt-card-text {
  padding: 0 1.25rem 1.25rem;
}

.page-news .opt-card-title {
  font-family: var(--font-heading, 'Impact', sans-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--news-text);
  margin: 0 0 0.5rem;
  line-height: 1.3;
}

.page-news .opt-card-text p,
.page-news .opt-note {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.9rem;
  color: var(--news-muted);
  line-height: 1.6;
  margin: 0;
}

.page-news .opt-card--stats {
  gap: 0.85rem;
}

.page-news .opt-stats-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.page-news .opt-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-news .opt-list-item {
  position: relative;
  padding-left: 1.25rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.9rem;
  color: var(--news-text);
  line-height: 1.5;
}

.page-news .opt-list-item::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--news-accent);
  font-weight: 700;
}

/* 进度条 */
.page-news .progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(192, 192, 192, 0.15);
  border-radius: 3px;
  overflow: hidden;
  margin: 0.25rem 0;
}

.page-news .progress-bar-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--news-accent), var(--news-neon));
  border-radius: 3px;
  transition: width 0.6s ease;
}

/* ========== 行业观察区 ========== */
.page-news .insights-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-news .insight-visual {
  background: var(--news-card-bg);
  border: 1px solid rgba(192, 192, 192, 0.12);
  border-radius: var(--news-radius);
  overflow: hidden;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.page-news .insight-image {
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  display: block;
  aspect-ratio: 3 / 2;
}

.page-news .insight-visual-caption {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  background: rgba(11, 27, 45, 0.6);
}

.page-news .insight-source {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.8rem;
  color: var(--news-muted);
  font-style: italic;
}

.page-news .insight-text {
  background: var(--news-card-bg);
  border: 1px solid rgba(192, 192, 192, 0.12);
  border-radius: var(--news-radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
}

.page-news .insight-quote {
  margin: 0;
  padding: 0 0 0 1.25rem;
  border-left: 4px solid var(--news-neon);
}

.page-news .insight-quote p {
  font-family: var(--font-heading, 'Impact', sans-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--news-text);
  line-height: 1.5;
  margin: 0;
  font-style: italic;
}

.page-news .insight-body {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.95rem;
  color: var(--news-muted);
  line-height: 1.7;
  margin: 0;
}

/* ========== 底部装饰 ========== */
.page-news .news-footer-decor {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem 0 0.5rem;
  border-top: 1px solid rgba(192, 192, 192, 0.08);
  flex-wrap: wrap;
}

.page-news .decor-image {
  width: 200px;
  height: auto;
  max-width: 100%;
  object-fit: contain;
  opacity: 0.7;
  flex-shrink: 0;
}

.page-news .decor-text {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.85rem;
  color: var(--news-muted);
  margin: 0;
  letter-spacing: 0.03em;
}

/* ========== 返回顶部 ========== */
.page-news .back-top {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--news-accent);
  background: transparent;
  border: 1.5px solid var(--news-accent);
  padding: 0.5rem 1.2rem;
  border-radius: 3px;
  cursor: pointer;
  transition: transform var(--news-transition), background var(--news-transition);
  align-self: flex-start;
  margin-top: 0.5rem;
  clip-path: polygon(0 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.page-news .back-top:hover,
.page-news .back-top:focus-visible {
  background: var(--news-accent);
  color: #fff;
  transform: translateY(-2px);
  outline: 2px solid var(--news-text);
  outline-offset: 2px;
}

/* ============================================
   响应式 - 桌面端 (min-width: 768px)
   ============================================ */
@media (min-width: 768px) {
  .page-news .container {
    padding: 2.5rem 2rem 4rem;
    gap: 4rem;
  }

  .page-news .news-headline {
    font-size: 3.5rem;
  }

  .page-news .news-subtitle {
    font-size: 1.15rem;
  }

  .page-news .speed-line {
    width: 280px;
  }

  .page-news .speed-line--alt {
    width: 120px;
  }

  /* 功能更新：三列网格 */
  .page-news .feature-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .page-news .feature-card--primary {
    transform: scale(1.02);
    border-color: rgba(255, 90, 0, 0.35);
  }

  .page-news .feature-card--primary:hover {
    transform: scale(1.02) translateY(-4px);
  }

  /* 服务优化：两栏 */
  .page-news .optimization-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-news .opt-card--img {
    flex-direction: column;
  }

  /* 行业观察：两栏 */
  .page-news .insights-grid {
    grid-template-columns: 1.3fr 1fr;
    align-items: stretch;
  }

  .page-news .insight-text {
    padding: 2rem 2.25rem;
  }

  .page-news .insight-quote p {
    font-size: 1.2rem;
  }

  .page-news .news-footer-decor {
    justify-content: space-between;
    padding: 2rem 0 0.75rem;
  }
}

/* ============================================
   宽屏优化 (min-width: 1024px)
   ============================================ */
@media (min-width: 1024px) {
  .page-news .container {
    padding: 3rem 2rem 5rem;
    gap: 5rem;
  }

  .page-news .news-headline {
    font-size: 4rem;
  }

  .page-news .section-title {
    font-size: 2rem;
  }

  .page-news .feature-card {
    padding: 2rem;
  }
}

/* ============================================
   窄屏安全 (max-width: 400px)
   ============================================ */
@media (max-width: 400px) {
  .page-news .container {
    padding: 1rem 0.75rem 2rem;
    gap: 2rem;
  }

  .page-news .news-headline {
    font-size: 1.8rem;
  }

  .page-news .section-title {
    font-size: 1.35rem;
  }

  .page-news .feature-card {
    padding: 1rem;
  }

  .page-news .opt-card,
  .page-news .insight-text {
    padding: 1rem;
  }

  .page-news .feature-icon {
    width: 64px;
    height: 64px;
  }

  .page-news .decor-image {
    width: 140px;
  }
}

/* 确保所有图片响应式 */
.page-news img {
  max-width: 100%;
  height: auto;
}

/* 链接焦点样式统一 */
.page-news a:focus-visible,
.page-news button:focus-visible {
  outline: 2px solid var(--news-accent);
  outline-offset: 2px;
}

/* 选中高亮 */
.page-news ::selection {
  background: var(--news-accent);
  color: #fff;
}