.page-news {
  --pn-gap: 2rem;
  --pn-card-radius: 12px;
  --pn-featured-min-height: 340px;
  --pn-transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0 1.25rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
  color: var(--text-primary);
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 0 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--neutral-gray);
  flex-wrap: wrap;
}
.page-news .breadcrumb a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color var(--transition-speed);
}
.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  color: var(--accent-green);
  outline: none;
}
.page-news .breadcrumb-sep {
  color: var(--neutral-gray);
  user-select: none;
}
.page-news .breadcrumb-current {
  color: var(--text-secondary);
}

/* ---------- 精选文章 ---------- */
.page-news .pn-featured {
  position: relative;
  border-radius: var(--pn-card-radius);
  overflow: hidden;
  margin-bottom: 2rem;
  min-height: var(--pn-featured-min-height);
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-light);
  transition: transform var(--pn-transition), box-shadow var(--pn-transition);
}
.page-news .pn-featured:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 191, 255, 0.12);
}
.page-news .pn-featured-img-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
  max-height: 260px;
}
.page-news .pn-featured-img {
  display: block;
  width: 100%;
  height: 260px;
  object-fit: cover;
  object-position: center 20%;
}
.page-news .pn-featured-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, var(--bg-secondary) 100%);
  pointer-events: none;
}
.page-news .pn-featured-text {
  padding: 1.25rem 1.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  position: relative;
  z-index: 1;
  margin-top: -1px;
}
.page-news .pn-featured-heading {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.02em;
}
.page-news .pn-featured-summary {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
  max-width: 42em;
}
.page-news .pn-featured-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--neutral-gray);
  letter-spacing: 0.04em;
}

/* ---------- 标签 ---------- */
.page-news .pn-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2em 0.7em;
  border-radius: 20px;
  margin-right: 0.4rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1.4;
}
.page-news .pn-tag-update {
  background: rgba(57, 255, 20, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(57, 255, 20, 0.3);
}
.page-news .pn-tag-data {
  background: rgba(0, 191, 255, 0.15);
  color: var(--accent-blue);
  border: 1px solid rgba(0, 191, 255, 0.3);
}
.page-news .pn-tag-insight {
  background: rgba(180, 130, 255, 0.15);
  color: #b482ff;
  border: 1px solid rgba(180, 130, 255, 0.3);
}
.page-news .pn-tag-guide {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  border: 1px solid var(--glass-medium);
}

/* ---------- 筛选栏 ---------- */
.page-news .pn-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.75rem 0 1.5rem;
  border-bottom: 1px solid var(--glass-light);
  margin-bottom: 2rem;
}
.page-news .pn-filter-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.45rem 1.1rem;
  border-radius: 30px;
  border: 1px solid var(--glass-medium);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition-speed), color var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
  user-select: none;
}
.page-news .pn-filter-btn:hover,
.page-news .pn-filter-btn:focus-visible {
  background: rgba(57, 255, 20, 0.08);
  color: var(--accent-green);
  border-color: var(--accent-green);
  outline: none;
}
.page-news .pn-filter-btn.pn-filter-active {
  background: rgba(57, 255, 20, 0.18);
  color: var(--accent-green);
  border-color: var(--accent-green);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.12);
}

/* ---------- 区域标题 ---------- */
.page-news .pn-section {
  margin-bottom: 3rem;
}
.page-news .pn-section-title {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 1.5rem;
  letter-spacing: -0.01em;
}
.page-news .pn-section-title-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-green);
  opacity: 0.5;
  font-weight: 400;
}

/* ---------- 卡片网格 ---------- */
.page-news .pn-card-grid {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}
.page-news .pn-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-radius: var(--pn-card-radius);
  overflow: hidden;
  border: 1px solid var(--glass-light);
  transition: transform var(--pn-transition), box-shadow var(--pn-transition), border-color var(--pn-transition);
}
.page-news .pn-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.5);
  border-color: rgba(57, 255, 20, 0.15);
}
.page-news .pn-card-img-wrap {
  width: 100%;
  overflow: hidden;
  flex-shrink: 0;
}
.page-news .pn-card-img-wrap img {
  display: block;
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.page-news .pn-card:hover .pn-card-img-wrap img {
  transform: scale(1.03);
}
.page-news .pn-card-img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  min-height: 120px;
}
.page-news .pn-card-svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 160px;
}
.page-news .pn-card-body {
  padding: 1.25rem 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}
.page-news .pn-card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.page-news .pn-card-summary {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
  flex: 1;
}
.page-news .pn-card-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--neutral-gray);
  letter-spacing: 0.04em;
}
.page-news .pn-card-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-blue);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color var(--transition-speed), gap var(--transition-speed);
  margin-top: 0.25rem;
}
.page-news .pn-card-link:hover,
.page-news .pn-card-link:focus-visible {
  color: var(--accent-green);
  gap: 0.6rem;
  outline: none;
}

/* ---------- 底部CTA条 ---------- */
.page-news .pn-cta-bar {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1.5rem 1.75rem;
  border-radius: var(--pn-card-radius);
  background: var(--bg-secondary);
  border: 1px solid var(--glass-light);
  margin-top: 0.5rem;
}
.page-news .pn-cta-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin: 0;
  line-height: 1.5;
}
.page-news .pn-cta-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-blue);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color var(--transition-speed), gap var(--transition-speed);
}
.page-news .pn-cta-link:hover,
.page-news .pn-cta-link:focus-visible {
  color: var(--accent-green);
  gap: 0.7rem;
  outline: none;
}

/* ====== 移动端优先（已适配） ====== */
/* 窄屏下卡片堆叠，所有内容左对齐 */

/* ====== 平板及以上 ====== */
@media (min-width: 640px) {
  .page-news {
    padding: 0 2rem 4rem;
  }
  .page-news .pn-featured {
    flex-direction: row;
    min-height: auto;
  }
  .page-news .pn-featured-img-wrap {
    max-height: none;
    flex: 0 0 48%;
    min-height: 300px;
  }
  .page-news .pn-featured-img {
    height: 100%;
    min-height: 300px;
  }
  .page-news .pn-featured-overlay {
    background: linear-gradient(90deg, transparent 50%, var(--bg-secondary) 100%);
  }
  .page-news .pn-featured-text {
    flex: 1;
    padding: 2rem 2.5rem;
    justify-content: center;
    margin-top: 0;
  }
  .page-news .pn-featured-heading {
    font-size: 2rem;
  }
  .page-news .pn-card-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  .page-news .pn-card {
    flex-direction: column;
  }
  .page-news .pn-card-img-wrap img {
    height: 160px;
  }
  .page-news .pn-card-grid-alt .pn-card:first-child {
    grid-column: 1 / 3;
    flex-direction: row;
  }
  .page-news .pn-card-grid-alt .pn-card:first-child .pn-card-img-wrap {
    flex: 0 0 45%;
    min-height: 200px;
  }
  .page-news .pn-card-grid-alt .pn-card:first-child .pn-card-img-wrap img {
    height: 100%;
    min-height: 200px;
  }
  .page-news .pn-card-grid-alt .pn-card:first-child .pn-card-body {
    flex: 1;
    padding: 1.5rem 1.75rem;
  }
  .page-news .pn-cta-bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .page-news .pn-cta-text {
    font-size: 1rem;
  }
}

/* ====== 桌面端 ====== */
@media (min-width: 1024px) {
  .page-news {
    padding: 0 3rem 5rem;
  }
  .page-news .breadcrumb {
    padding: 1.5rem 0 2rem;
    font-size: 0.85rem;
  }
  .page-news .pn-featured-text {
    padding: 2.5rem 3rem;
  }
  .page-news .pn-featured-heading {
    font-size: 2.4rem;
  }
  .page-news .pn-featured-summary {
    font-size: 1.05rem;
  }
  .page-news .pn-section-title {
    font-size: 1.7rem;
    margin-bottom: 2rem;
  }
  .page-news .pn-card-grid {
    gap: 2rem;
  }
  .page-news .pn-card-title {
    font-size: 1.2rem;
  }
  .page-news .pn-card-summary {
    font-size: 0.95rem;
  }
  .page-news .pn-card-img-wrap img {
    height: 180px;
  }
  .page-news .pn-filter-bar {
    gap: 0.75rem;
    padding: 0.75rem 0 2rem;
  }
  .page-news .pn-filter-btn {
    font-size: 0.85rem;
    padding: 0.5rem 1.4rem;
  }
  .page-news .pn-cta-bar {
    padding: 2rem 2.5rem;
  }
}

/* ====== 大屏优化 ====== */
@media (min-width: 1280px) {
  .page-news .pn-featured-heading {
    font-size: 2.8rem;
  }
  .page-news .pn-featured-text {
    padding: 3rem 3.5rem;
  }
  .page-news .pn-card-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.2rem;
  }
  .page-news .pn-card-grid-alt .pn-card:first-child {
    grid-column: 1 / 3;
  }
  .page-news .pn-card-img-wrap img {
    height: 200px;
  }
}