.page-news {
  background-color: var(--color-snow);
  overflow-x: hidden;
  counter-reset: news-item 0;
}

/* 面包屑 */
.page-news .breadcrumb-wrap {
  padding: 1.25rem 0 0.5rem;
}

/* 首屏横幅 */
.page-news .news-hero {
  background-color: var(--color-primary);
  background-image:
    linear-gradient(rgba(244, 248, 250, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 248, 250, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  color: var(--color-white);
  position: relative;
  margin-bottom: 2.5rem;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 130px;
  height: 130px;
  background-color: var(--color-accent);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  opacity: 0.85;
  pointer-events: none;
}

.page-news .news-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 2.5rem 0 3.25rem;
}

.page-news .news-hero__copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.1rem;
  z-index: 1;
}

.page-news .news-hero__title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 24ch;
  color: var(--color-white);
}

.page-news .news-hero__lede {
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 46ch;
  margin: 0;
  color: rgba(244, 248, 250, 0.92);
}

.page-news .news-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.page-news .news-hero__meta .data-mono {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: rgba(244, 248, 250, 0.7);
  border: 1px solid rgba(244, 248, 250, 0.25);
  padding: 0.35rem 0.7rem;
  border-radius: 2px;
  letter-spacing: 0.02em;
}

.page-news .news-hero__cover {
  margin: 0;
  position: relative;
  z-index: 1;
}

.page-news .news-hero__cover img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  box-shadow: var(--shadow-md);
  clip-path: polygon(4% 0, 100% 0, 100% 100%, 0 100%);
}

/* 主布局：索引 + 文章流 */
.page-news .news-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 4rem;
}

/* 左栏索引 */
.page-news .news-index {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  align-self: start;
  box-shadow: var(--shadow-sm);
}

.page-news .news-index .eyebrow {
  color: var(--color-accent);
  margin: 0;
}

.page-news .news-index__heading {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin: 0.5rem 0 1rem;
}

.page-news .news-index__list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  border-top: 1px solid var(--color-border);
}

.page-news .news-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.9rem 0.25rem;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-ink);
  font-weight: 700;
  font-size: 0.95rem;
  transition: color var(--ease), background-color var(--ease);
}

.page-news .news-index__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gray);
  transition: color var(--ease);
}

.page-news .news-index__link:hover {
  color: var(--color-accent);
}

.page-news .news-index__link:hover .news-index__num {
  color: var(--color-accent);
}

.page-news .news-index__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gray);
  background-color: var(--color-snow);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  transition: background-color var(--ease), color var(--ease);
}

.page-news .news-index__link:hover .news-index__count {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.page-news .news-index__note {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--color-gray);
  border-left: 3px solid var(--color-lake);
  padding-left: 1rem;
}

.page-news .news-index__note p {
  margin: 0 0 0.75rem;
}

/* 右栏文章流 */
.page-news .news-stream {
  display: flex;
  flex-direction: column;
  gap: 2.75rem;
  counter-reset: news-item 0;
}

.page-news .news-section__header {
  margin-bottom: 1.25rem;
  border-bottom: 2px solid var(--color-ink);
  padding-bottom: 0.5rem;
}

.page-news .news-section__header .eyebrow {
  color: var(--color-accent);
  margin: 0;
}

.page-news .news-section__title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin: 0.25rem 0 0.4rem;
}

.page-news .news-section__desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-gray);
  margin: 0;
  max-width: 62ch;
}

/* 文章卡片 */
.page-news .news-card {
  --card-border-color: var(--color-border);
  border-left: 4px solid var(--card-border-color);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-white);
  transition: border-color var(--ease), box-shadow var(--ease);
  position: relative;
}

.page-news .news-card:hover {
  --card-border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.page-news .news-card__details {
  display: block;
}

.page-news .news-card__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  padding: 1rem 0.9rem;
  list-style: none;
  position: relative;
}

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

.page-news .news-card__summary::before {
  content: counter(news-item, decimal-leading-zero);
  counter-increment: news-item;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-gray);
  min-width: 2.2ch;
  transition: color var(--ease);
}

.page-news .news-card__summary:hover::before {
  color: var(--color-accent);
}

.page-news .news-card__tag {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.page-news .tag-accent {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.page-news .news-card__title {
  flex: 1 1 auto;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--color-ink);
  transition: color var(--ease);
}

.page-news .news-card__summary:hover .news-card__title {
  color: var(--color-accent);
}

.page-news .news-card__mark {
  width: 0.6rem;
  height: 0.6rem;
  border-right: 2px solid var(--color-gray);
  border-bottom: 2px solid var(--color-gray);
  transform: rotate(45deg) translateY(-2px);
  transition: transform var(--ease), border-color var(--ease);
  flex-shrink: 0;
}

.page-news .news-card__details[open] .news-card__mark {
  transform: rotate(-135deg) translateY(-2px);
  border-color: var(--color-accent);
}

.page-news .news-card__details[open] > .news-card__summary {
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0.25rem;
}

.page-news .news-card__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  padding: 1rem 0.9rem 1.5rem;
  color: var(--color-ink);
}

.page-news .news-card__text {
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-news .news-card__text p {
  margin: 0 0 0.75rem;
}

.page-news .news-card__text p:last-child {
  margin-bottom: 0;
}

.page-news .news-card__media {
  margin: 0;
}

.page-news .news-card__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--color-border);
  object-fit: cover;
}

/* 底部 CTA */
.page-news .news-cta {
  background-color: var(--color-ink);
  color: var(--color-white);
  padding: 2rem 1.5rem;
  border-radius: 6px;
  border-left: 4px solid var(--color-accent);
}

.page-news .news-cta .eyebrow {
  color: var(--color-gold);
  margin: 0;
}

.page-news .news-cta h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  margin: 0.5rem 0 0.75rem;
}

.page-news .news-cta p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(244, 248, 250, 0.85);
  max-width: 65ch;
  margin: 0;
}

.page-news .news-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

/* 中等屏 */
@media (min-width: 720px) {
  .page-news .news-hero__inner {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    gap: 3rem;
  }

  .page-news .news-layout {
    grid-template-columns: 280px 1fr;
    gap: 2.5rem;
  }

  .page-news .news-card__body {
    grid-template-columns: 3fr 2fr;
    align-items: start;
  }

  .page-news .news-card__media--tall img {
    max-height: 520px;
  }
}

/* 宽屏 */
@media (min-width: 1024px) {
  .page-news .news-layout {
    grid-template-columns: 320px 1fr;
    gap: 3rem;
  }

  .page-news .news-section__title {
    font-size: 2.25rem;
  }

  .page-news .news-card__summary {
    padding: 1.1rem 1rem;
  }

  .page-news .news-card__body {
    padding: 1.1rem 1rem 1.75rem;
  }
}