/* ===== 行业观察页面专属样式 .page-news ===== */
.page-news {
  --news-red: var(--primary-red, #E53935);
  --news-black: var(--primary-black, #1A1A1A);
  --news-silver: var(--accent-silver, #C0C0C0);
  --news-blue: var(--accent-blue, #00B4D8);
  --news-bg: var(--bg-dark, #121212);
  --news-text: var(--text-primary, #FFFFFF);
  --news-text-secondary: var(--text-secondary, #B0B0B0);
  --news-card-bg: rgba(26, 26, 26, 0.85);
  --news-card-border: rgba(192, 192, 192, 0.12);
  --news-glow: rgba(229, 57, 53, 0.25);
  --news-timeline-width: 3px;
  --news-dot-size: 16px;
  display: block;
  width: 100%;
  background: var(--news-bg);
  color: var(--news-text);
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-top: calc(var(--header-height, 64px) + 1.25rem);
  padding-bottom: 0.5rem;
  font-family: var(--font-label, 'Courier New', monospace);
  font-size: 0.8rem;
  color: var(--news-text-secondary);
}
.page-news .breadcrumb a {
  color: var(--news-silver);
  text-decoration: none;
  transition: color 0.2s;
}
.page-news .breadcrumb a:hover {
  color: var(--news-red);
}
.page-news .breadcrumb-sep {
  color: var(--news-text-secondary);
  opacity: 0.5;
}
.page-news .breadcrumb [aria-current="page"] {
  color: var(--news-text);
  font-weight: 700;
}

/* ===== 首屏英雄区 ===== */
.page-news-hero {
  position: relative;
  width: 100%;
  height: clamp(320px, 50vw, 480px);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  margin-bottom: 2.5rem;
}
.page-news-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-news-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}
.page-news-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(18,18,18,0.92) 0%, rgba(18,18,18,0.40) 60%, rgba(229,57,53,0.25) 100%);
}
.page-news-hero-content {
  position: relative;
  z-index: 2;
  padding-bottom: 2.5rem;
  width: 100%;
}
.page-news-hero-label {
  display: inline-block;
  font-family: var(--font-label, 'Courier New', monospace);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--news-red);
  background: rgba(229,57,53,0.12);
  padding: 0.25rem 0.75rem;
  margin-bottom: 0.75rem;
  border-left: 3px solid var(--news-red);
  text-transform: uppercase;
}
.page-news-hero-title {
  font-family: var(--font-heading, 'Arial Black', 'Impact', sans-serif);
  font-size: clamp(2.8rem, 10vw, 5.5rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 4px;
  line-height: 1.05;
  color: var(--news-text);
  margin: 0 0 0.5rem;
  text-shadow: 0 4px 30px rgba(0,0,0,0.7);
  position: relative;
}
.page-news-hero-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: var(--news-red);
  margin-top: 0.4rem;
  transform: skewX(-20deg);
}
.page-news-hero-desc {
  font-family: var(--font-body, 'Segoe UI', 'Roboto', sans-serif);
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--news-silver);
  line-height: 1.6;
  max-width: 500px;
  margin: 0;
}

/* ===== 时间轴容器 ===== */
.page-news-timeline-wrapper {
  padding-bottom: 1rem;
}

/* 筛选控件 */
.page-news-timeline-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(192,192,192,0.15);
}
.page-news-filter-btn {
  font-family: var(--font-label, 'Courier New', monospace);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 0.5rem 1.25rem;
  background: transparent;
  border: 1px solid rgba(192,192,192,0.25);
  color: var(--news-text-secondary);
  cursor: pointer;
  transition: all 0.25s ease;
  border-radius: 0;
}
.page-news-filter-btn:hover {
  border-color: var(--news-red);
  color: var(--news-text);
}
.page-news-filter-btn.is-active {
  background: var(--news-red);
  border-color: var(--news-red);
  color: #fff;
  box-shadow: 0 0 20px var(--news-glow);
}

/* ===== 区块标题 ===== */
.page-news-section {
  margin-bottom: 3.5rem;
  position: relative;
}
.page-news-section-title {
  font-family: var(--font-heading, 'Arial Black', 'Impact', sans-serif);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--news-text);
  margin: 0 0 1.75rem;
  padding-left: 1rem;
  border-left: 4px solid var(--news-red);
  transform: skewX(-6deg);
  transform-origin: left center;
}
.page-news-section-title::before {
  content: '// ';
  color: var(--news-red);
  font-weight: 900;
}

/* ===== 时间轴 ===== */
.page-news-timeline {
  position: relative;
  padding-left: 2.5rem;
}
.page-news-timeline-line {
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: var(--news-timeline-width);
  background: linear-gradient(to bottom, var(--news-red) 0%, var(--news-red) 70%, rgba(229,57,53,0.2) 100%);
  border-radius: 2px;
  transform: skewX(-6deg);
  transform-origin: top center;
}
.page-news-timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: -6px;
  width: var(--news-timeline-width);
  height: 20px;
  background: var(--news-red);
  border-radius: 2px;
  transform: skewX(-6deg);
  opacity: 0.6;
}

/* ===== 卡片 ===== */
.page-news-card {
  position: relative;
  margin-bottom: 2rem;
  opacity: 1;
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.page-news-card-dot {
  position: absolute;
  left: -2.5rem;
  top: 1.75rem;
  width: var(--news-dot-size);
  height: var(--news-dot-size);
  background: var(--news-red);
  border: 3px solid var(--news-bg);
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--news-red), 0 0 16px var(--news-glow);
  z-index: 2;
  transform: translateX(-50%);
  transition: box-shadow 0.3s;
}
.page-news-card:hover .page-news-card-dot {
  box-shadow: 0 0 0 2px var(--news-red), 0 0 28px var(--news-glow), 0 0 48px rgba(229,57,53,0.2);
}
.page-news-card-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--news-card-bg);
  border: 1px solid var(--news-card-border);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 1.25rem;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  position: relative;
  transform: skewX(0deg);
}
.page-news-card-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--news-red);
  opacity: 0;
  transition: opacity 0.3s;
}
.page-news-card:hover .page-news-card-inner {
  border-color: rgba(229,57,53,0.4);
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(229,57,53,0.08);
  transform: translateX(4px);
}
.page-news-card:hover .page-news-card-inner::before {
  opacity: 1;
}
.page-news-card-img-wrap {
  flex-shrink: 0;
  width: 100%;
  max-height: 220px;
  overflow: hidden;
  background: rgba(0,0,0,0.3);
}
.page-news-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.page-news-card:hover .page-news-card-img {
  transform: scale(1.03);
}
.page-news-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.page-news-card-tag {
  display: inline-block;
  font-family: var(--font-label, 'Courier New', monospace);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  width: fit-content;
  border-left: 3px solid;
}
.tag-update {
  color: var(--news-blue);
  border-color: var(--news-blue);
  background: rgba(0,180,216,0.08);
}
.tag-analysis {
  color: var(--news-silver);
  border-color: var(--news-silver);
  background: rgba(192,192,192,0.08);
}
.page-news-card-title {
  font-family: var(--font-heading, 'Arial Black', 'Impact', sans-serif);
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--news-text);
  margin: 0;
  line-height: 1.3;
}
.page-news-card-text {
  font-family: var(--font-body, 'Segoe UI', 'Roboto', sans-serif);
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--news-text-secondary);
  margin: 0.2rem 0 0.4rem;
}
.page-news-card-link {
  font-family: var(--font-label, 'Courier New', monospace);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--news-red);
  text-decoration: none;
  align-self: flex-start;
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, opacity 0.2s;
}
.page-news-card-link:hover {
  border-bottom-color: var(--news-red);
  opacity: 0.85;
}

/* 筛选隐藏状态 */
.page-news-card.hidden {
  display: none;
}

/* ===== 底部扩展卡片 ===== */
.page-news-extra {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
  border-top: 1px solid rgba(192,192,192,0.1);
}
.page-news-extra-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(192,192,192,0.08);
  padding: 1.25rem 1.5rem;
  transition: border-color 0.25s, background 0.25s;
}
.page-news-extra-card:hover {
  border-color: rgba(229,57,53,0.25);
  background: rgba(229,57,53,0.04);
}
.page-news-extra-icon {
  font-size: 2rem;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(229,57,53,0.1);
  color: var(--news-red);
}
.page-news-extra-title {
  font-family: var(--font-heading, 'Arial Black', 'Impact', sans-serif);
  font-size: 1rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 0 0 0.2rem;
  color: var(--news-text);
}
.page-news-extra-text {
  font-family: var(--font-body, 'Segoe UI', 'Roboto', sans-serif);
  font-size: 0.85rem;
  color: var(--news-text-secondary);
  margin: 0;
  line-height: 1.5;
}
.page-news-extra-btn {
  margin-left: auto;
  flex-shrink: 0;
  font-size: 0.8rem !important;
  padding: 0.5rem 1.25rem !important;
}

/* ===== 信任声明 ===== */
.page-news .trust-statement {
  font-family: var(--font-label, 'Courier New', monospace);
  font-size: 0.75rem;
  color: var(--news-text-secondary);
  text-align: center;
  padding-top: 1rem;
  padding-bottom: 1.5rem;
  border-top: 1px solid rgba(192,192,192,0.06);
  letter-spacing: 1px;
  opacity: 0.7;
}

/* ===== 响应式：平板及以上 ===== */
@media (min-width: 640px) {
  .page-news-timeline {
    padding-left: 3rem;
  }
  .page-news-timeline-line {
    left: 14px;
  }
  .page-news-timeline::before {
    left: 14px;
  }
  .page-news-card-dot {
    left: -3rem;
    top: 2rem;
  }
  .page-news-card-inner {
    flex-direction: row;
    align-items: flex-start;
    padding: 1.5rem;
  }
  .page-news-card-img-wrap {
    width: 200px;
    min-height: 140px;
    max-height: 160px;
    flex-shrink: 0;
  }
  .page-news-card-body {
    padding-left: 0.5rem;
  }
  .page-news-extra {
    flex-direction: row;
    gap: 1.25rem;
  }
  .page-news-extra-card {
    flex: 1;
  }
}

@media (min-width: 960px) {
  .page-news-hero {
    height: 520px;
  }
  .page-news-hero-content {
    padding-bottom: 3.5rem;
  }
  .page-news-timeline {
    padding-left: 4rem;
  }
  .page-news-timeline-line {
    left: 18px;
  }
  .page-news-timeline::before {
    left: 18px;
  }
  .page-news-card-dot {
    left: -4rem;
    top: 2.25rem;
    width: 18px;
    height: 18px;
  }
  .page-news-card-inner {
    padding: 1.75rem 2rem;
  }
  .page-news-card-img-wrap {
    width: 260px;
    max-height: 180px;
  }
  .page-news-card-title {
    font-size: 1.35rem;
  }
  .page-news-card-text {
    font-size: 1rem;
  }
  .page-news-section {
    margin-bottom: 4.5rem;
  }
  .page-news-extra-card {
    padding: 1.5rem 2rem;
  }
}

@media (min-width: 1200px) {
  .page-news-hero {
    height: 560px;
  }
  .page-news-timeline {
    padding-left: 5rem;
  }
  .page-news-card-dot {
    left: -5rem;
  }
  .page-news-card-img-wrap {
    width: 300px;
    max-height: 200px;
  }
  .page-news-card-inner {
    padding: 2rem 2.5rem;
  }
}

/* ===== 动效：卡片入场（渐进增强） ===== */
@media (prefers-reduced-motion: no-preference) {
  .page-news-card {
    animation: pageNewsFadeUp 0.5s ease both;
  }
  .page-news-card:nth-child(2) { animation-delay: 0.08s; }
  .page-news-card:nth-child(3) { animation-delay: 0.16s; }
  .page-news-card:nth-child(4) { animation-delay: 0.24s; }
  .page-news-card:nth-child(5) { animation-delay: 0.32s; }
}
@keyframes pageNewsFadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}