.page-news {
  --color-news-accent: #39ff14;
  --color-news-secondary: #ff6b35;
  --color-news-card-bg: rgba(10, 31, 61, 0.88);
  --color-news-text: #e0e6ed;
  --color-news-heading: #ffffff;
  --color-news-tab-bg: rgba(10, 31, 61, 0.7);
  --color-news-tab-active: #0d2b52;
  --color-news-border: #2a3f5f;
  --news-card-radius: 12px;
  --news-transition-speed: 0.3s;
  --news-max-width: 1200px;

  background-color: var(--color-primary, #0a1f3d);
  color: var(--color-news-text);
  font-family: var(--font-body, 'Inter', 'Segoe UI', Roboto, Arial, sans-serif);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ===== 首屏 ===== */
.page-news__hero {
  position: relative;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.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;
  display: block;
}

.page-news__hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(10, 31, 61, 0.92) 30%, rgba(10, 31, 61, 0.4) 70%, rgba(10, 31, 61, 0.85) 100%);
}

.page-news__hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--spacing-lg, 2rem) var(--spacing-md, 1rem);
  max-width: var(--news-max-width);
  width: 100%;
}

.page-news__breadcrumb {
  font-size: 0.875rem;
  color: var(--color-neutral-light, #2a3f5f);
  margin-bottom: var(--spacing-md, 1rem);
  display: flex;
  justify-content: center;
  gap: 0.25rem;
  font-family: var(--font-mono, 'Source Code Pro', Consolas, monospace);
}

.page-news__breadcrumb-link {
  color: var(--color-accent, #39ff14);
  text-decoration: none;
  transition: opacity var(--news-transition-speed);
}

.page-news__breadcrumb-link:hover,
.page-news__breadcrumb-link:focus {
  opacity: 0.7;
  text-decoration: underline;
}

.page-news__breadcrumb-sep {
  color: var(--color-neutral-light, #2a3f5f);
}

.page-news__breadcrumb-current {
  color: var(--color-text, #e0e6ed);
}

.page-news__title {
  font-family: var(--font-heading, Impact, 'Helvetica Neue', Arial, sans-serif);
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  color: var(--color-news-heading);
  margin: 0 0 var(--spacing-sm, 0.5rem) 0;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-shadow: 0 2px 12px rgba(57, 255, 20, 0.25);
}

.page-news__subtitle {
  font-size: clamp(0.95rem, 2vw, 1.25rem);
  color: var(--color-text, #e0e6ed);
  margin: 0;
  font-weight: 400;
  letter-spacing: 0.02em;
  border-top: 1px solid var(--color-news-border);
  display: inline-block;
  padding-top: var(--spacing-sm, 0.5rem);
}

/* ===== 专题分类标签 ===== */
.page-news__tabs {
  background: var(--color-panel-bg, #0d2b52);
  border-bottom: 1px solid var(--color-news-border);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
}

.page-news__tabs-inner {
  max-width: var(--news-max-width);
  margin: 0 auto;
  padding: var(--spacing-md, 1rem) var(--spacing-md, 1rem);
}

.page-news__section-heading {
  font-family: var(--font-heading, Impact, 'Helvetica Neue', Arial, sans-serif);
  font-size: 1.1rem;
  color: var(--color-news-heading);
  margin: 0 0 var(--spacing-sm, 0.5rem) 0;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.7;
}

.page-news__tab-list {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.page-news__tab {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  font-family: var(--font-body, 'Inter', 'Segoe UI', Roboto, Arial, sans-serif);
  font-size: 0.9rem;
  color: var(--color-text, #e0e6ed);
  background: var(--color-news-tab-bg);
  border: 1px solid var(--color-news-border);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--news-transition-speed) ease;
  white-space: nowrap;
}

.page-news__tab:hover {
  background: var(--color-news-tab-active);
  border-color: var(--color-news-accent);
}

.page-news__tab--active {
  background: var(--color-news-tab-active);
  border-color: var(--color-news-accent);
  color: var(--color-news-accent);
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.15);
}

.page-news__tab-icon {
  width: 20px;
  height: 20px;
  object-fit: contain;
  border-radius: 2px;
  flex-shrink: 0;
}

/* ===== 最新专栏 ===== */
.page-news__latest {
  padding: var(--spacing-xl, 3rem) var(--spacing-md, 1rem);
  max-width: var(--news-max-width);
  margin: 0 auto;
}

.page-news__latest-inner {
  width: 100%;
}

.page-news__latest .page-news__section-heading {
  font-size: 1.6rem;
  margin-bottom: var(--spacing-sm, 0.5rem);
  opacity: 1;
}

.page-news__latest-note {
  font-family: var(--font-mono, 'Source Code Pro', Consolas, monospace);
  font-size: 0.9rem;
  color: var(--color-news-secondary);
  margin: 0 0 var(--spacing-lg, 2rem) 0;
  border-left: 3px solid var(--color-news-secondary);
  padding-left: var(--spacing-md, 1rem);
}

.page-news__cards {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg, 2rem);
}

.page-news__card {
  display: flex;
  flex-direction: column;
  background: var(--color-news-card-bg);
  border: 1px solid var(--color-news-border);
  border-radius: var(--news-card-radius);
  overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.page-news__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(57, 255, 20, 0.08);
}

.page-news__card-visual {
  position: relative;
  width: 100%;
  min-height: 180px;
  overflow: hidden;
  background: var(--color-primary, #0a1f3d);
}

.page-news__card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity 0.5s ease;
}

.page-news__card-chart-svg {
  position: absolute;
  bottom: 8px;
  left: 8px;
  right: 8px;
  height: 62px;
  background: rgba(10, 31, 61, 0.7);
  border-radius: 6px;
  padding: 6px 8px;
  backdrop-filter: blur(2px);
  pointer-events: none;
}

.page-news__svg-chart {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 0 4px rgba(57, 255, 20, 0.2));
}

.page-news__card-body {
  padding: var(--spacing-md, 1rem) var(--spacing-md, 1rem) var(--spacing-lg, 2rem);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.page-news__card-title {
  font-family: var(--font-heading, Impact, 'Helvetica Neue', Arial, sans-serif);
  font-size: 1.35rem;
  color: var(--color-news-heading);
  margin: 0 0 var(--spacing-sm, 0.5rem) 0;
  line-height: 1.3;
  letter-spacing: 0.02em;
}

.page-news__card-summary {
  font-size: 0.95rem;
  color: var(--color-news-text);
  margin: 0 0 var(--spacing-md, 1rem) 0;
  line-height: 1.6;
  flex: 1;
}

.page-news__card-meta {
  display: flex;
  gap: 0.5rem;
  margin-bottom: var(--spacing-sm, 0.5rem);
  flex-wrap: wrap;
}

.page-news__card-tag {
  font-family: var(--font-mono, 'Source Code Pro', Consolas, monospace);
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--color-news-border);
  border-radius: 4px;
  background: rgba(57, 255, 20, 0.06);
  color: var(--color-news-accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-news__card-expand {
  background: none;
  border: none;
  color: var(--color-news-accent);
  font-family: var(--font-mono, 'Source Code Pro', Consolas, monospace);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0.25rem 0;
  text-align: left;
  transition: opacity var(--news-transition-speed);
  align-self: flex-start;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.page-news__card-expand:hover,
.page-news__card-expand:focus {
  opacity: 0.7;
  text-decoration: underline;
}

.page-news__card-detail {
  margin-top: var(--spacing-sm, 0.5rem);
  padding-top: var(--spacing-sm, 0.5rem);
  border-top: 1px solid var(--color-news-border);
  font-size: 0.9rem;
  color: var(--color-text, #e0e6ed);
  line-height: 1.6;
}

.page-news__card-detail[hidden] {
  display: none;
}

/* ===== 滚动加载提示 ===== */
.page-news__scroll-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin-top: var(--spacing-xl, 3rem);
  padding: var(--spacing-lg, 2rem) 0;
  opacity: 0.6;
  transition: opacity var(--news-transition-speed);
}

.page-news__scroll-hint:hover {
  opacity: 1;
}

.page-news__scroll-hint-text {
  font-family: var(--font-mono, 'Source Code Pro', Consolas, monospace);
  font-size: 0.8rem;
  color: var(--color-news-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.page-news__scroll-hint-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-news-accent), transparent);
  animation: page-news-pulse-line 2s ease-in-out infinite;
}

@keyframes page-news-pulse-line {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.15); }
}

/* ===== 底部装饰 ===== */
.page-news__bottom-deco {
  max-width: var(--news-max-width);
  margin: 0 auto;
  padding: var(--spacing-md, 1rem) var(--spacing-md, 1rem) 0;
  display: flex;
  justify-content: flex-end;
  opacity: 0.25;
}

.page-news__silhouette {
  width: 180px;
  height: auto;
  object-fit: contain;
  display: block;
}

/* ===== 内部链接导航 ===== */
.page-news__internal-links {
  max-width: var(--news-max-width);
  margin: 0 auto;
  padding: var(--spacing-lg, 2rem) var(--spacing-md, 1rem) var(--spacing-xl, 3rem);
}

.page-news__internal-links-inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md, 1rem);
  justify-content: center;
}

.page-news__internal-links .btn {
  font-family: var(--font-body, 'Inter', 'Segoe UI', Roboto, Arial, sans-serif);
  font-size: 0.9rem;
  padding: 0.6rem 1.4rem;
  border-radius: 6px;
  text-decoration: none;
  transition: all var(--news-transition-speed) ease;
  border: 1px solid transparent;
}

.page-news__internal-links .btn--primary {
  background: var(--color-news-accent);
  color: var(--color-primary, #0a1f3d);
  font-weight: 700;
}

.page-news__internal-links .btn--primary:hover {
  background: transparent;
  color: var(--color-news-accent);
  border-color: var(--color-news-accent);
}

.page-news__internal-links .btn--secondary {
  background: transparent;
  color: var(--color-news-text);
  border-color: var(--color-news-border);
}

.page-news__internal-links .btn--secondary:hover {
  border-color: var(--color-news-secondary);
  color: var(--color-news-secondary);
  background: rgba(255, 107, 53, 0.06);
}

/* ===== 响应式 桌面端 ===== */
@media (min-width: 720px) {
  .page-news__hero {
    height: 520px;
  }

  .page-news__cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg, 2rem);
  }

  .page-news__card {
    flex-direction: column;
  }

  .page-news__card-visual {
    min-height: 220px;
  }

  .page-news__card-title {
    font-size: 1.5rem;
  }

  .page-news__tab-list {
    gap: 0.75rem;
  }

  .page-news__tab {
    padding: 0.6rem 1.2rem;
    font-size: 0.95rem;
  }

  .page-news__bottom-deco {
    padding: var(--spacing-lg, 2rem) var(--spacing-md, 1rem) 0;
  }

  .page-news__silhouette {
    width: 240px;
  }
}

@media (min-width: 1024px) {
  .page-news__hero {
    height: 600px;
  }

  .page-news__cards {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .page-news__card-visual {
    min-height: 260px;
  }

  .page-news__latest {
    padding: var(--spacing-xl, 3rem) var(--spacing-lg, 2rem);
  }

  .page-news__tabs-inner {
    padding: var(--spacing-md, 1rem) var(--spacing-lg, 2rem);
  }
}

/* ===== 窄屏极端保障 ===== */
@media (max-width: 380px) {
  .page-news__tab {
    font-size: 0.75rem;
    padding: 0.35rem 0.6rem;
  }

  .page-news__card-title {
    font-size: 1.1rem;
  }

  .page-news__hero {
    height: 320px;
  }
}