.page-news {
  --news-rail-w: 15.5rem;
  --news-radius: 26px;
  --news-night-line: rgba(191, 227, 224, .18);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
  background:
    radial-gradient(900px 520px at 88% -10%, rgba(191, 227, 224, .55), transparent 68%),
    radial-gradient(700px 460px at 4% 8%, rgba(231, 217, 196, .5), transparent 70%);
}

.page-news .breadcrumb {
  margin: clamp(1.1rem, 3vw, 1.8rem) 0 clamp(.8rem, 2vw, 1.2rem);
}

/* ---------- 首屏：杂志封面 ---------- */
.page-news .journal-masthead {
  position: relative;
  padding: clamp(1.25rem, 3.4vw, 2.6rem);
  border-radius: var(--r-lg);
  background: linear-gradient(158deg, rgba(244, 241, 232, .96), rgba(231, 217, 196, .78));
  border: 1px solid var(--line-soft);
  box-shadow: var(--shadow-float);
  overflow: hidden;
}

.page-news .journal-masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(23, 42, 90, .045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(23, 42, 90, .045) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  mask-image: radial-gradient(120% 90% at 78% 12%, #000 18%, transparent 76%);
}

.page-news .journal-masthead > * {
  position: relative;
  z-index: 1;
}

.page-news .cover-note {
  display: block;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--teal);
  margin-bottom: .9rem;
}

.page-news .masthead-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 3.4vw, 2.6rem);
}

.page-news .masthead-copy h1 {
  margin: .2rem 0 .7rem;
  font-size: clamp(2.4rem, 9vw, 4.2rem);
  line-height: .98;
  letter-spacing: -.03em;
  font-weight: 800;
  color: var(--indigo);
}

.page-news .masthead-lead {
  max-width: 40ch;
  font-size: clamp(.98rem, 2.4vw, 1.06rem);
  line-height: 1.8;
  color: #26324c;
  margin: 0 0 1.2rem;
}

.page-news .masthead-index {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .5rem;
}

.page-news .masthead-index li {
  display: inline-flex;
  align-items: baseline;
  gap: .4rem;
  padding: .32rem .8rem;
  border-radius: var(--r-pill);
  background: rgba(23, 42, 90, .07);
  color: var(--indigo);
  font-size: .86rem;
}

.page-news .masthead-index .mono {
  font-size: .7rem;
  color: var(--orange);
}

.page-news .masthead-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.page-news .masthead-cover {
  margin: 0;
  display: grid;
  gap: .85rem;
}

.page-news .masthead-cover .media {
  border-radius: var(--news-radius);
  overflow: hidden;
  background: linear-gradient(140deg, #172A5A, #2F6F73 62%, #BFE3E0);
}

.page-news .masthead-cover img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .cover-caption {
  padding: 1rem 1.1rem 1.15rem;
  border-radius: var(--r-md);
  background: rgba(244, 241, 232, .88);
  border: 1px solid var(--line);
}

.page-news .cover-title {
  margin: .55rem 0 .45rem;
  font-size: clamp(1.1rem, 3.4vw, 1.4rem);
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--indigo);
}

.page-news .cover-caption p {
  margin: 0 0 .7rem;
  font-size: .9rem;
  line-height: 1.75;
  color: #2c3852;
}

.page-news .cover-link {
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
}

.page-news .cover-link:hover {
  color: var(--orange);
}

/* ---------- 主布局 ---------- */
.page-news .journal-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
  margin-top: clamp(2rem, 5vw, 3.4rem);
}

.page-news .journal-rail {
  padding: 1rem 1.1rem;
  border-radius: var(--r-md);
  background: rgba(244, 241, 232, .82);
  border: 1px solid var(--line-soft);
}

.page-news .rail-title {
  margin: 0 0 .7rem;
  font-size: .74rem;
  letter-spacing: .18em;
  color: var(--cold);
}

.page-news .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .12rem;
}

.page-news .rail-link {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  padding: .42rem .7rem;
  border-radius: var(--r-pill);
  font-size: .9rem;
  color: var(--indigo);
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-news .rail-link .mono {
  font-size: .68rem;
  color: var(--orange);
}

.page-news .rail-link:hover {
  background: rgba(23, 42, 90, .08);
}

.page-news .rail-link.is-active {
  background: var(--indigo);
  color: var(--moon);
}

.page-news .rail-link.is-active .mono {
  color: var(--peach);
}

.page-news .rail-foot {
  margin: .9rem 0 0;
  padding-top: .8rem;
  border-top: 1px dashed var(--line);
  font-size: .78rem;
  line-height: 1.7;
  color: var(--cold);
}

.page-news .journal-body {
  display: grid;
  gap: clamp(1.3rem, 3.4vw, 2.2rem);
}

/* ---------- 章节通用 ---------- */
.page-news .chapter {
  padding: clamp(1.2rem, 3.2vw, 2.2rem);
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
}

.page-news .chapter--moon {
  background: rgba(244, 241, 232, .92);
}

.page-news .chapter--mint {
  background: linear-gradient(170deg, rgba(191, 227, 224, .78), rgba(191, 227, 224, .42));
}

.page-news .chapter--sand {
  background: linear-gradient(170deg, rgba(231, 217, 196, .82), rgba(244, 241, 232, .9));
}

.page-news .chapter--peach {
  background: linear-gradient(160deg, rgba(255, 214, 199, .85), rgba(244, 241, 232, .96));
}

.page-news .chapter--night {
  background:
    radial-gradient(560px 320px at 84% 6%, rgba(47, 111, 115, .55), transparent 72%),
    radial-gradient(420px 300px at 8% 96%, rgba(242, 107, 58, .22), transparent 72%),
    var(--indigo-deep);
  border-color: rgba(191, 227, 224, .16);
  color: var(--moon);
}

.page-news .chapter-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .3rem .8rem;
  margin-bottom: 1rem;
}

.page-news .chapter-no {
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-news .chapter-title {
  margin: 0;
  font-size: clamp(1.35rem, 4vw, 1.85rem);
  letter-spacing: -.015em;
  color: var(--indigo);
}

.page-news .chapter--night .chapter-title {
  color: var(--moon);
}

.page-news .chapter-sub {
  flex: 1 1 16rem;
  margin: 0;
  font-size: .85rem;
  line-height: 1.7;
  color: var(--cold);
}

.page-news .chapter--night .chapter-sub {
  color: rgba(217, 221, 226, .78);
}

.page-news .chapter-intro {
  max-width: 52ch;
  margin: 0 0 1.1rem;
  font-size: .93rem;
  line-height: 1.8;
  color: #2c3852;
}

.page-news .chapter-intro a {
  color: var(--teal);
  text-underline-offset: 3px;
}

/* ---------- 版本手记：时间线 ---------- */
.page-news .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-news .timeline li {
  position: relative;
  padding: .15rem 0 .15rem 1.5rem;
  border-left: 2px solid rgba(23, 42, 90, .16);
}

.page-news .timeline li::before {
  content: "";
  position: absolute;
  left: -.44rem;
  top: .5rem;
  width: .72rem;
  height: .72rem;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(191, 227, 224, .9);
}

.page-news .timeline-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .35rem .6rem;
}

.page-news .ver {
  padding: .12rem .55rem;
  border-radius: var(--r-pill);
  background: var(--indigo);
  color: var(--moon);
  font-size: .68rem;
  letter-spacing: .06em;
  white-space: nowrap;
}

.page-news .timeline h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--indigo);
}

.page-news .timeline p {
  margin: .35rem 0 0;
  font-size: .9rem;
  line-height: 1.78;
  color: #33405c;
}

.page-news .chapter-figure {
  margin: 1.3rem 0 0;
  display: grid;
  gap: .55rem;
}

.page-news .chapter-figure--flush {
  margin: 0;
}

.page-news .chapter-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-md);
  object-fit: cover;
}

.page-news .chapter-figure figcaption {
  font-size: .78rem;
  line-height: 1.65;
  color: var(--cold);
}

.page-news .chapter--night .chapter-figure figcaption {
  color: rgba(217, 221, 226, .72);
}

/* ---------- 服务记录：拼贴 ---------- */
.page-news .collage {
  display: grid;
  grid-template-columns: 1fr;
  gap: .8rem;
}

.page-news .collage-item {
  padding: 1rem 1.05rem;
  border-radius: var(--r-md);
  background: rgba(191, 227, 224, .5);
  border: 1px solid rgba(23, 42, 90, .1);
}

.page-news .collage-item--sand {
  background: rgba(231, 217, 196, .72);
}

.page-news .collage-item--wide {
  background: var(--indigo);
  color: var(--moon);
  border-color: transparent;
}

.page-news .collage-kicker {
  margin: 0 0 .3rem;
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--teal);
}

.page-news .collage-item--wide .collage-kicker {
  color: var(--peach);
}

.page-news .collage-num {
  margin: 0 0 .4rem;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 5vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--orange);
  line-height: 1;
}

.page-news .collage-item--wide .collage-num {
  color: #FFD6C7;
}

.page-news .collage-text,
.page-news .collage-item--span2 p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.75;
}

.page-news .collage-item--wide .collage-text {
  color: rgba(244, 241, 232, .9);
}

.page-news .collage-title {
  margin: 0 0 .4rem;
  font-size: 1rem;
  color: var(--indigo);
}

.page-news .collage-item--span2 p {
  color: #33405c;
}

/* ---------- 检索观察 ---------- */
.page-news .research-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.3rem;
}

.page-news .research-copy p {
  margin: 0 0 .9rem;
  font-size: .93rem;
  line-height: 1.85;
  color: rgba(244, 241, 232, .9);
}

.page-news .research-copy strong {
  color: var(--peach);
  font-weight: 600;
}

.page-news .research-link {
  margin: .4rem 0 0;
}

.page-news .research-link a {
  color: var(--mint);
  font-size: .88rem;
  text-underline-offset: 3px;
}

.page-news .research-viz {
  display: grid;
  gap: .8rem;
}

.page-news .heat-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
}

.page-news .heat-grid span {
  display: block;
  height: 26px;
  border-radius: 6px;
  background: rgba(191, 227, 224, .18);
}

.page-news .heat-grid span:nth-child(3n) {
  background: rgba(191, 227, 224, .34);
}

.page-news .heat-grid span:nth-child(5n) {
  background: rgba(242, 107, 58, .42);
}

.page-news .heat-grid span:nth-child(7n + 2) {
  background: rgba(242, 107, 58, .7);
}

.page-news .cloud {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-top: 1.3rem;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--news-night-line);
}

.page-news .cloud-tag {
  display: inline-block;
  padding: .34rem .8rem;
  border-radius: var(--r-pill);
  background: rgba(191, 227, 224, .14);
  border: 1px solid rgba(191, 227, 224, .3);
  color: var(--mint);
  font-size: .82rem;
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}

.page-news .cloud-tag--m {
  font-size: .9rem;
}

.page-news .cloud-tag--l {
  font-size: 1rem;
  background: rgba(242, 107, 58, .22);
  border-color: rgba(242, 107, 58, .5);
  color: #FFD6C7;
}

.page-news .cloud-tag:hover {
  background: var(--mint);
  color: var(--indigo-deep);
  transform: translateY(-2px);
}

/* ---------- 专题索引 ---------- */
.page-news .series-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: .85rem;
}

.page-news .series-card {
  padding: 1.05rem 1.1rem 1.15rem;
  border-radius: var(--r-md);
  background: rgba(244, 241, 232, .9);
  border: 1px solid var(--line);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease);
}

.page-news .series-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-float);
}

.page-news .series-card h3 {
  margin: .6rem 0 .45rem;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--indigo);
}

.page-news .series-card > p {
  margin: 0 0 .75rem;
  font-size: .87rem;
  line-height: 1.75;
  color: #33405c;
}

.page-news .series-list {
  list-style: none;
  margin: 0;
  padding: .7rem 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: .4rem;
}

.page-news .series-list li {
  display: flex;
  flex-wrap: wrap;
  gap: .1rem .5rem;
  font-size: .83rem;
  line-height: 1.6;
  color: #2c3852;
}

.page-news .series-list .mono {
  font-size: .7rem;
  color: var(--teal);
  white-space: nowrap;
}

.page-news .series-foot {
  margin: 1.1rem 0 0;
  font-size: .87rem;
  color: #33405c;
}

.page-news .series-foot a {
  color: var(--teal);
  text-underline-offset: 3px;
}

/* ---------- 近期更新 ---------- */
.page-news .update-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.page-news .update-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: .3rem;
  padding: .95rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-news .update-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-news .update-time {
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--orange);
}

.page-news .update-list h3 {
  margin: 0 0 .28rem;
  font-size: .98rem;
  line-height: 1.55;
  color: var(--indigo);
}

.page-news .update-list p {
  margin: 0 0 .5rem;
  font-size: .86rem;
  line-height: 1.72;
  color: #3a465f;
}

.page-news .update-list .tag {
  font-size: .7rem;
}

/* ---------- 提供线索 ---------- */
.page-news .contribute-lead {
  max-width: 52ch;
  margin: 0 0 1.1rem;
  font-size: .93rem;
  line-height: 1.82;
  color: #2c3852;
}

.page-news .contribute-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.page-news .contribute-note {
  margin: 1rem 0 0;
  font-size: .76rem;
  letter-spacing: .02em;
  color: var(--teal);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 34rem) {
  .page-news .update-list li {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    gap: .1rem 1.1rem;
    align-items: start;
  }

  .page-news .update-time {
    padding-top: .22rem;
  }

  .page-news .series-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .collage {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .collage-item--span2 {
    grid-column: span 2;
  }

  .page-news .collage-item--wide {
    grid-column: span 2;
  }
}

@media (min-width: 52rem) {
  .page-news .masthead-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

  .page-news .research-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 1.8rem;
    align-items: start;
  }

  .page-news .heat-grid span {
    height: 30px;
  }
}

@media (min-width: 64rem) {
  .page-news .journal-layout {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .journal-rail {
    position: sticky;
    top: 6.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .rail-link,
  .page-news .cloud-tag,
  .page-news .series-card {
    transition: none;
  }

  .page-news .cloud-tag:hover,
  .page-news .series-card:hover {
    transform: none;
  }
}