.page-news {
  --news-num: 2.75rem;
  --news-rail: 15rem;
  padding-bottom: 4.5rem;
}

/* ---------- 面包屑 ---------- */
.page-news .crumbs {
  margin: 1.5rem 0 0.5rem;
}

/* ---------- 刊头 ---------- */
.page-news .news-mast {
  position: relative;
  padding: 1.75rem 0 2rem;
  border-bottom: 1px solid var(--line);
  background-image:
    radial-gradient(120% 140% at 0% 0%, rgba(53, 242, 208, 0.10), transparent 55%),
    repeating-linear-gradient(90deg, rgba(28, 37, 48, 0.5) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(180deg, rgba(28, 37, 48, 0.5) 0 1px, transparent 1px 72px);
  background-position: 0 0, -1px -1px, -1px -1px;
}

.page-news .news-mast .eyebrow {
  color: var(--cyan);
}

.page-news .news-mast h1 {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2rem, 8.5vw, 4.4rem);
  line-height: 1.06;
  letter-spacing: 0.015em;
  color: var(--white);
  margin: 0.6rem 0 1rem;
  max-width: 18em;
}

.page-news .news-mast .lead {
  max-width: 46rem;
  color: var(--steel);
  font-size: 1rem;
  line-height: 1.85;
  margin: 0 0 1.6rem;
}

.page-news .mast-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.8125rem;
  color: var(--steel);
}
.page-news .mast-facts li {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  border-left: 2px solid var(--line);
  padding-left: 0.65rem;
}
.page-news .mast-facts .mono {
  color: var(--white);
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* ---------- 主体两栏 ---------- */
.page-news .news-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-top: 2.25rem;
}

/* ---------- 栏目索引 ---------- */
.page-news .news-index {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 1.1rem 1rem 1.25rem;
  box-shadow: var(--hard-shadow);
}
.page-news .index-title {
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
  margin: 0 0 0.9rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
}
.page-news .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-news .index-list li + li {
  border-top: 1px solid var(--line);
}
.page-news .index-list a {
  display: flex;
  gap: 0.7rem;
  align-items: baseline;
  padding: 0.6rem 0.25rem;
  color: var(--white);
  text-decoration: none;
  font-size: 0.875rem;
  line-height: 1.5;
  transition: color 160ms var(--ease), padding-left 160ms var(--ease);
}
.page-news .index-list a .mono {
  color: var(--cyan);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  flex: none;
}
.page-news .index-list a:hover,
.page-news .index-list a:focus-visible {
  color: var(--cyan);
  padding-left: 0.6rem;
}
.page-news .index-note {
  margin-top: 1.25rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}
.page-news .index-note p {
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--steel);
  margin: 0.5rem 0 0;
}

/* ---------- 标签 ---------- */
.page-news .tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--line);
  color: var(--steel);
  white-space: nowrap;
}
.page-news .tag--ver {
  color: var(--orange);
  border-color: rgba(255, 122, 47, 0.5);
}
.page-news .tag--rank {
  color: var(--cyan);
  border-color: rgba(53, 242, 208, 0.45);
}
.page-news .tag--method {
  color: var(--violet);
  border-color: rgba(138, 107, 255, 0.5);
}
.page-news .tag--campus {
  color: var(--white);
  background: var(--mist);
  border-color: rgba(53, 242, 208, 0.25);
}

/* ---------- 章节头 ---------- */
.page-news .stream + .stream {
  margin-top: 3rem;
}
.page-news .stream__head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding-bottom: 0.7rem;
  border-bottom: 2px solid var(--white);
  margin-bottom: 1.5rem;
}
.page-news .stream--sub .stream__head {
  border-bottom-color: var(--cyan);
}
.page-news .stream__idx {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  flex: none;
}
.page-news .stream__head h2 {
  font-family: var(--f-display);
  font-size: clamp(1.25rem, 5vw, 1.8rem);
  letter-spacing: 0.03em;
  line-height: 1.25;
  color: var(--white);
  margin: 0;
}

/* ---------- 图片 ---------- */
.page-news .media {
  margin: 0 0 1.75rem;
  border: 1px solid var(--line);
  background: var(--panel);
}
.page-news .media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.03);
}
.page-news .media__cap {
  font-size: 0.75rem;
  color: var(--steel);
  padding: 0.6rem 0.85rem;
  border-top: 1px solid var(--line);
  line-height: 1.7;
}

/* ---------- 置顶文章 ---------- */
.page-news .feature {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--hard-shadow);
}
.page-news .feature .media {
  margin: 0;
  border: 0;
  border-bottom: 1px solid var(--line);
}
.page-news .feature__body {
  padding: 1.35rem 1.15rem 1.5rem;
}
.page-news .feature__title {
  font-family: var(--f-display);
  font-size: clamp(1.35rem, 5.6vw, 2.15rem);
  line-height: 1.22;
  letter-spacing: 0.01em;
  color: var(--white);
  margin: 0.7rem 0 0.75rem;
}
.page-news .feature__sum {
  color: var(--steel);
  font-size: 0.9375rem;
  line-height: 1.85;
  margin: 0 0 1.4rem;
}
.page-news .keypoints {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-news .keypoints li {
  background: var(--ink);
  padding: 0.95rem 1rem;
}
.page-news .keypoints strong {
  display: block;
  font-family: var(--f-display);
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
  margin-bottom: 0.35rem;
}
.page-news .keypoints span {
  color: var(--steel);
  font-size: 0.875rem;
  line-height: 1.8;
}
.page-news .feature__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0;
}

/* ---------- 条目流 ---------- */
.page-news .entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-news .entry {
  display: grid;
  grid-template-columns: var(--news-num) 1fr;
  gap: 0.35rem 0.9rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
  transition: background-color 200ms var(--ease);
}
.page-news .entry:last-child {
  border-bottom: 1px solid var(--line);
}
.page-news .entry:hover {
  background: rgba(14, 43, 42, 0.5);
}
.page-news .entry__num {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--steel);
  padding-top: 0.25rem;
}
.page-news .entry:hover .entry__num {
  color: var(--cyan);
}
.page-news .entry__body {
  min-width: 0;
}
.page-news .entry__title {
  font-family: var(--f-display);
  font-size: 1.0625rem;
  line-height: 1.45;
  letter-spacing: 0.015em;
  color: var(--white);
  margin: 0 0 0.45rem;
}
.page-news .entry__sum {
  color: var(--steel);
  font-size: 0.875rem;
  line-height: 1.85;
  margin: 0 0 0.6rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.page-news .entry:hover .entry__sum,
.page-news .entry:focus-within .entry__sum {
  -webkit-line-clamp: unset;
  overflow: visible;
}
.page-news .entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  font-size: 0.75rem;
  color: var(--steel);
}
.page-news .entry__meta .mono {
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* ---------- 折线缩略图 ---------- */
.page-news .spark {
  grid-column: 1 / -1;
  width: 100%;
  max-width: 8.5rem;
  height: auto;
  margin: 0 0 0.35rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.4rem;
}
.page-news .spark polyline {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
  opacity: 0.85;
}
.page-news .spark--violet polyline {
  stroke: var(--violet);
}

/* ---------- 社团卡片 ---------- */
.page-news .campus-cards {
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-news .campus-card {
  background: var(--panel);
  padding: 1.15rem 1.05rem 1.3rem;
}
.page-news .campus-card .eyebrow {
  color: var(--orange);
  display: block;
  margin-bottom: 0.5rem;
}
.page-news .campus-card h3 {
  font-family: var(--f-display);
  font-size: 1.0625rem;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--white);
  margin: 0 0 0.5rem;
}
.page-news .campus-card p {
  color: var(--steel);
  font-size: 0.875rem;
  line-height: 1.85;
  margin: 0;
}

/* ---------- 订阅 ---------- */
.page-news .sub-block {
  display: grid;
  gap: 1.5rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--cyan);
  background: linear-gradient(180deg, rgba(14, 43, 42, 0.75), rgba(13, 17, 25, 1) 60%);
  padding: 1.4rem 1.15rem 1.6rem;
}
.page-news .sub-block__main h3 {
  font-family: var(--f-display);
  font-size: 1.15rem;
  letter-spacing: 0.03em;
  color: var(--white);
  margin: 0 0 0.7rem;
}
.page-news .sub-block__main p {
  color: var(--steel);
  font-size: 0.9063rem;
  line-height: 1.9;
  margin: 0 0 0.85rem;
}
.page-news .sub-block__main p:last-child {
  margin-bottom: 0;
}
.page-news .sub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0 0 0.9rem;
}
.page-news .sub-note {
  font-size: 0.8125rem;
  line-height: 1.85;
  color: var(--steel);
  margin: 0;
  border-top: 1px solid var(--line);
  padding-top: 0.85rem;
}
.page-news .sub-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-news .news-mast {
    padding-top: 2.5rem;
    padding-bottom: 2.75rem;
  }
  .page-news .feature__body {
    padding: 1.75rem 1.6rem 1.9rem;
  }
  .page-news .entry {
    grid-template-columns: 3.5rem 1fr;
    gap: 0.4rem 1.25rem;
    padding: 1.4rem 0.5rem;
  }
  .page-news .entry__title {
    font-size: 1.1875rem;
  }
  .page-news .spark {
    grid-column: 2 / 3;
    margin-bottom: 0.5rem;
  }
  .page-news .sub-block {
    padding: 1.75rem 1.75rem 1.9rem;
  }
}

/* ---------- 桌面：固定左索引 + 文章流 ---------- */
@media (min-width: 1000px) {
  .page-news .news-wrap {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }
  .page-news .news-index {
    position: sticky;
    top: 1.5rem;
  }
  .page-news .feature__body {
    padding: 2rem 2rem 2.25rem;
  }
  .page-news .feature__sum {
    max-width: 44rem;
  }
  .page-news .campus-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-news .sub-block {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 2.5rem;
  }
  .page-news .stream + .stream {
    margin-top: 4rem;
  }
}

@media (min-width: 1240px) {
  .page-news .news-wrap {
    grid-template-columns: 16.5rem minmax(0, 1fr);
    gap: 3.5rem;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .entry,
  .page-news .index-list a {
    transition: color 0ms linear;
  }
  .page-news .entry:hover {
    background: transparent;
  }
}