.page-news {
  --news-accent: #D4AF37;
  --news-primary: #0B1A2C;
  --news-purple: #7B2D8B;
  --news-green: #39FF14;
  --news-white: #FFFFFF;
  --news-light: #F0F0F0;
  --news-font-heading: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --news-font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --news-font-accent: 'Space Mono', 'Courier New', monospace;
  --news-radius: 4px;
  --news-shadow: 0 4px 20px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
  --news-max-width: 1200px;
  --news-gold-border: 2px solid var(--news-accent);

  display: block;
  width: 100%;
  max-width: var(--news-max-width);
  margin: 0 auto;
  padding: 2rem 1rem;
  font-family: var(--news-font-body);
  color: var(--news-primary);
  background: var(--news-white);
}

/* ===== 首屏 ===== */
.page-news__hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
  padding: 2rem 1.5rem;
  background: linear-gradient(135deg, var(--news-primary) 0%, #112240 100%);
  border-left: var(--news-gold-border);
  position: relative;
}
.page-news__hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 30%;
  height: 100%;
  background: var(--news-purple);
  opacity: 0.15;
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0% 100%);
  pointer-events: none;
}
.page-news__hero-number {
  font-family: var(--news-font-accent);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  color: var(--news-accent);
  line-height: 1;
  opacity: 0.7;
  margin-right: 0.5rem;
}
.page-news__hero-text {
  flex: 1;
  min-width: 200px;
}
.page-news__hero-title {
  font-family: var(--news-font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--news-white);
  margin: 0 0 0.25rem;
  letter-spacing: 0.02em;
}
.page-news__hero-sub {
  font-family: var(--news-font-accent);
  font-size: 0.9rem;
  color: var(--news-accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin: 0 0 0.75rem;
}
.page-news__hero-desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.8);
  max-width: 500px;
  line-height: 1.5;
  margin: 0;
}
.page-news__hero-decor {
  flex-shrink: 0;
  width: 240px;
  height: 160px;
  overflow: hidden;
  border: var(--news-gold-border);
  transform: rotate(2deg);
  transition: transform 0.3s;
}
.page-news__hero-decor:hover {
  transform: rotate(0deg);
}
.page-news__hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== 筛选标签 ===== */
.page-news__filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  padding: 0.75rem 1rem;
  background: var(--news-light);
  border-left: 4px solid var(--news-green);
}
.page-news__filter-label {
  font-family: var(--news-font-accent);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--news-primary);
  opacity: 0.6;
  white-space: nowrap;
}
.page-news__filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.page-news__tag {
  font-family: var(--news-font-accent);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 1rem;
  border: 1px solid var(--news-primary);
  background: transparent;
  color: var(--news-primary);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  border-radius: var(--news-radius);
}
.page-news__tag:hover,
.page-news__tag:focus-visible {
  background: var(--news-primary);
  color: var(--news-white);
  border-color: var(--news-primary);
  outline: 2px solid var(--news-green);
  outline-offset: 2px;
}
.page-news__tag--active {
  background: var(--news-accent);
  color: var(--news-primary);
  border-color: var(--news-accent);
  font-weight: 600;
}

/* ===== 章节通用 ===== */
.page-news__section {
  margin-bottom: 3.5rem;
}
.page-news__section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--news-primary);
  padding-bottom: 0.5rem;
  position: relative;
}
.page-news__section-number {
  font-family: var(--news-font-accent);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--news-accent);
  line-height: 1;
  opacity: 0.5;
}
.page-news__section-title {
  font-family: var(--news-font-heading);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--news-primary);
  margin: 0;
  flex: 1;
}
.page-news__section-rotate {
  font-family: var(--news-font-accent);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--news-accent);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  opacity: 0.6;
  white-space: nowrap;
}

/* ===== 案例网格 ===== */
.page-news__grid--cases {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-news__card {
  background: var(--news-white);
  border: 1px solid #ddd;
  border-left: 4px solid var(--news-accent);
  box-shadow: var(--news-shadow);
  transition: transform 0.25s, box-shadow 0.25s;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.page-news__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}
.page-news__card:focus-within {
  outline: 2px solid var(--news-green);
  outline-offset: 2px;
}
.page-news__card-img-wrap {
  position: relative;
  width: 100%;
  padding-bottom: 66.67%;
  overflow: hidden;
  background: var(--news-light);
}
.page-news__card-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}
.page-news__card:hover .page-news__card-img {
  transform: scale(1.04);
}
.page-news__card-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  font-family: var(--news-font-accent);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  background: var(--news-accent);
  color: var(--news-primary);
  border-radius: var(--news-radius);
  font-weight: 600;
}
.page-news__card-body {
  padding: 1rem 1.25rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.page-news__card-title {
  font-family: var(--news-font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--news-primary);
  margin: 0 0 0.4rem;
}
.page-news__card-summary {
  font-size: 0.9rem;
  color: #444;
  line-height: 1.5;
  margin: 0;
  flex: 1;
}

/* ===== 分隔器 ===== */
.page-news__divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2rem 0 2.5rem;
}
.page-news__divider-line {
  flex: 1;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--news-accent), transparent);
}
.page-news__divider-icon {
  width: 50px;
  height: 50px;
  flex-shrink: 0;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--news-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-news__divider-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== 行业观察 ===== */
.page-news__insights-layout {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}
.page-news__insights-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.page-news__insight-item {
  display: flex;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--news-white);
  border: 1px solid #e0e0e0;
  border-left: 3px solid var(--news-purple);
  box-shadow: var(--news-shadow);
  transition: border-color 0.2s, box-shadow 0.2s;
  cursor: default;
}
.page-news__insight-item:hover {
  border-left-color: var(--news-green);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.page-news__insight-item:focus-within {
  outline: 2px solid var(--news-green);
  outline-offset: 2px;
}
.page-news__insight-index {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  min-width: 48px;
}
.page-news__insight-icon {
  width: 36px;
  height: 36px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--news-accent);
  display: block;
}
.page-news__insight-num {
  font-family: var(--news-font-accent);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--news-accent);
}
.page-news__insight-content {
  flex: 1;
}
.page-news__insight-title {
  font-family: var(--news-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--news-primary);
  margin: 0 0 0.25rem;
}
.page-news__insight-summary {
  font-size: 0.9rem;
  color: #555;
  margin: 0 0 0.5rem;
  line-height: 1.5;
}
.page-news__insight-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, margin 0.35s ease;
  margin: 0;
}
.page-news__insight-detail[data-open] {
  max-height: 200px;
  margin: 0.5rem 0 0;
}
.page-news__insight-detail p {
  font-size: 0.9rem;
  color: #333;
  line-height: 1.6;
  margin: 0;
  padding: 0.5rem 0.75rem;
  background: rgba(212,175,55,0.06);
  border-left: 2px solid var(--news-accent);
}
.page-news__insight-toggle {
  font-family: var(--news-font-accent);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: none;
  border: 1px solid var(--news-accent);
  color: var(--news-primary);
  padding: 0.25rem 0.75rem;
  cursor: pointer;
  border-radius: var(--news-radius);
  transition: background 0.2s, color 0.2s;
  margin-top: 0.25rem;
}
.page-news__insight-toggle:hover,
.page-news__insight-toggle:focus-visible {
  background: var(--news-accent);
  color: var(--news-white);
  outline: none;
}
.page-news__insight-toggle[aria-expanded="true"] {
  background: var(--news-primary);
  color: var(--news-white);
  border-color: var(--news-primary);
}

/* ===== 坐标索引 ===== */
.page-news__insights-coords {
  flex-shrink: 0;
  width: 200px;
  padding: 1.25rem 1rem;
  background: var(--news-primary);
  border: 1px solid var(--news-accent);
  position: sticky;
  top: 6rem;
}
.page-news__coords-label {
  font-family: var(--news-font-accent);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--news-accent);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--news-accent);
}
.page-news__coords-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.page-news__coords-item {
  margin: 0;
  padding: 0;
}
.page-news__coords-link {
  font-family: var(--news-font-accent);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--news-white);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  display: block;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  border-left: 2px solid transparent;
}
.page-news__coords-link:hover,
.page-news__coords-link:focus-visible {
  background: rgba(212,175,55,0.15);
  border-left-color: var(--news-accent);
  color: var(--news-accent);
  outline: none;
}

/* ===== 品牌动态 ===== */
.page-news__dynamic-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-news__dynamic-card {
  position: relative;
  padding: 1.75rem 1.5rem;
  background: var(--news-white);
  border: 1px solid #ddd;
  box-shadow: var(--news-shadow);
  transition: transform 0.25s, box-shadow 0.25s;
  overflow: hidden;
}
.page-news__dynamic-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--news-accent);
  transition: width 0.3s;
}
.page-news__dynamic-card:hover::before {
  width: 6px;
  background: var(--news-green);
}
.page-news__dynamic-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.1);
}
.page-news__dynamic-card:focus-within {
  outline: 2px solid var(--news-green);
  outline-offset: 2px;
}
.page-news__dynamic-card-border {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 40px;
  height: 40px;
  border-top: 2px solid var(--news-accent);
  border-right: 2px solid var(--news-accent);
  opacity: 0.3;
}
.page-news__dynamic-title {
  font-family: var(--news-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--news-primary);
  margin: 0 0 0.5rem;
}
.page-news__dynamic-text {
  font-size: 0.9rem;
  color: #444;
  line-height: 1.6;
  margin: 0 0 0.75rem;
  max-width: 600px;
}
.page-news__dynamic-tag {
  font-family: var(--news-font-accent);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--news-primary);
  background: var(--news-light);
  padding: 0.2rem 0.5rem;
  border-radius: var(--news-radius);
  display: inline-block;
  border: 1px solid #ccc;
}

/* ===== 底部导航 ===== */
.page-news__bottom-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 3rem;
  padding: 1.25rem 0;
  border-top: 2px solid var(--news-primary);
}
.page-news__bottom-link {
  font-family: var(--news-font-accent);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--news-primary);
  text-decoration: none;
  transition: color 0.2s;
}
.page-news__bottom-link:hover,
.page-news__bottom-link:focus-visible {
  color: var(--news-accent);
  text-decoration: underline;
  outline: none;
}
.page-news__bottom-sep {
  color: var(--news-accent);
  opacity: 0.4;
  font-size: 0.8rem;
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .page-news {
    padding: 2.5rem 1.5rem;
  }
  .page-news__grid--cases {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-news__dynamic-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-news__hero-decor {
    width: 280px;
    height: 180px;
  }
}

@media (min-width: 900px) {
  .page-news {
    padding: 3rem 2rem;
  }
  .page-news__grid--cases {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-news__dynamic-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-news__hero {
    padding: 2.5rem 2rem;
  }
  .page-news__hero-decor {
    width: 320px;
    height: 200px;
  }
  .page-news__insights-coords {
    width: 220px;
  }
}

@media (max-width: 768px) {
  .page-news__insights-layout {
    flex-direction: column;
  }
  .page-news__insights-coords {
    width: 100%;
    position: static;
    margin-top: 1.5rem;
  }
  .page-news__coords-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.4rem;
  }
  .page-news__coords-item {
    flex: 0 0 auto;
  }
  .page-news__coords-link {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
  }
  .page-news__hero-decor {
    width: 100%;
    height: auto;
    aspect-ratio: 3/2;
    transform: none;
  }
  .page-news__hero {
    flex-direction: column;
    align-items: stretch;
  }
  .page-news__hero-number {
    font-size: 3rem;
  }
}

@media (max-width: 480px) {
  .page-news {
    padding: 1.5rem 0.75rem;
  }
  .page-news__section-header {
    flex-wrap: wrap;
  }
  .page-news__section-rotate {
    writing-mode: horizontal-tb;
    font-size: 0.65rem;
  }
  .page-news__card-body {
    padding: 0.75rem 1rem 1rem;
  }
  .page-news__insight-item {
    flex-direction: column;
    gap: 0.5rem;
  }
  .page-news__insight-index {
    flex-direction: row;
    gap: 0.5rem;
    min-width: auto;
  }
}