.page-news {
  --news-pad: clamp(1rem, 2.6vw, 1.9rem);
  --news-radius: var(--radius-lg);
  --news-gap: clamp(1.1rem, 2.8vw, 1.9rem);
  position: relative;
  overflow-x: clip;
  background:
    radial-gradient(circle at 86% 3%, rgba(63, 224, 208, .10), transparent 44%),
    radial-gradient(circle at 6% 76%, rgba(242, 180, 92, .06), transparent 40%),
    var(--ink-950);
  color: var(--paper-50);
}

/* ---------- 报头 ---------- */
.page-news .news-masthead {
  padding-block: clamp(1.75rem, 5.5vw, 3.5rem) clamp(1.25rem, 3vw, 2.25rem);
}

.page-news .news-masthead__title {
  font-family: var(--font-head);
  font-size: var(--fs-h1);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -.01em;
  margin: .85rem 0 0;
  max-width: 24ch;
}

.page-news .news-masthead__lede {
  margin-top: 1.1rem;
  color: var(--rock-300);
  max-width: 64ch;
}

/* ---------- 焦点条目 ---------- */
.page-news .news-focus {
  padding-block: 0 clamp(2rem, 5vw, 3.25rem);
}

.page-news .focus-card {
  position: relative;
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.25rem);
  padding: var(--news-pad);
  padding-left: calc(var(--news-pad) + 8px);
  border-radius: var(--news-radius);
  border: 1px solid rgba(63, 224, 208, .26);
  background: linear-gradient(135deg, rgba(18, 38, 61, .94), rgba(12, 27, 46, .74));
  box-shadow: 0 26px 64px -40px rgba(0, 0, 0, .9);
  overflow: hidden;
}

.page-news .focus-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  background: linear-gradient(180deg, var(--cyan-400), var(--gold-400));
}

.page-news .focus-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-news .focus-card__title {
  font-family: var(--font-head);
  font-size: clamp(1.45rem, 3.6vw, 2.3rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -.005em;
  margin: .85rem 0 0;
  max-width: 22ch;
}

.page-news .focus-card__lede {
  margin: .9rem 0 0;
  color: var(--rock-300);
  line-height: 1.75;
  max-width: 58ch;
}

.page-news .focus-card__facts {
  display: grid;
  gap: .55rem;
  margin: 1.35rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.page-news .focus-card__fact {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: .75rem;
  align-items: baseline;
}

.page-news .focus-card__fact dt {
  font-size: var(--fs-tag);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-news .focus-card__fact dd {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--rock-300);
}

.page-news .focus-card__foot {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.5rem;
}

.page-news .focus-card__media {
  margin: 0;
  aspect-ratio: 3 / 2;
}

.page-news .focus-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-news .news-stream-section {
  padding-block: 0 clamp(2.5rem, 6vw, 4rem);
}

.page-news .news-layout {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.25rem);
}

.page-news .news-rail__label {
  margin: 0 0 .65rem;
  font-size: var(--fs-tag);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--rock-300);
}

.page-news .news-rail__list {
  display: flex;
  gap: .5rem;
  margin: 0;
  padding: 0 0 .4rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-news .news-rail__list::-webkit-scrollbar {
  display: none;
}

.page-news .news-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  padding: .55rem .85rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--rock-300);
  font-size: var(--fs-sm);
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-news .news-rail__link .index-rail__num {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--cyan-400);
}

.page-news .news-rail__link:hover,
.page-news .news-rail__link:focus-visible {
  color: var(--cyan-200);
  border-color: var(--cyan-400);
  background: rgba(63, 224, 208, .07);
}

.page-news .news-rail__link[aria-current] {
  color: var(--cyan-200);
  border-color: var(--cyan-400);
  background: rgba(63, 224, 208, .1);
}

/* ---------- 主题带 ---------- */
.page-news .news-stream {
  min-width: 0;
}

.page-news .topic-band {
  position: relative;
  border-radius: var(--news-radius);
  border: 1px solid var(--line);
  padding: var(--news-pad);
  margin-bottom: var(--news-gap);
  overflow: hidden;
}

.page-news .topic-band::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan-400), rgba(63, 224, 208, 0));
}

.page-news .topic-band--version {
  background: linear-gradient(155deg, rgba(18, 38, 61, .82), rgba(18, 38, 61, .32));
}

.page-news .topic-band--batch {
  background: linear-gradient(155deg, rgba(12, 27, 46, .94), rgba(12, 27, 46, .58));
  border-color: rgba(63, 224, 208, .2);
}

.page-news .topic-band--batch::after {
  background: linear-gradient(90deg, var(--gold-400), rgba(242, 180, 92, 0));
}

.page-news .topic-band--series {
  background: linear-gradient(155deg, rgba(27, 53, 82, .56), rgba(27, 53, 82, .16));
}

.page-news .topic-band--series::after {
  background: linear-gradient(90deg, var(--cyan-200), rgba(168, 243, 236, 0));
}

.page-news .topic-band__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .75rem;
  padding-bottom: .9rem;
  border-bottom: 1px solid var(--line);
}

.page-news .topic-band__title {
  flex: 1 1 100%;
  font-family: var(--font-head);
  font-size: clamp(1.2rem, 2.4vw, 1.7rem);
  font-weight: 700;
  line-height: 1.2;
  margin: .25rem 0 0;
}

.page-news .topic-band__note {
  flex: 1 1 100%;
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--rock-300);
  line-height: 1.6;
}

.page-news .topic-band__media {
  margin: 1.1rem 0 0;
  aspect-ratio: 4 / 3;
}

.page-news .topic-band__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-news .topic-band__media--series {
  aspect-ratio: 16 / 9;
}

/* ---------- 条目列表 ---------- */
.page-news .news-list {
  display: block;
}

.page-news .news-item {
  border-bottom: 1px solid var(--line);
}

.page-news .news-item:last-child {
  border-bottom: 0;
}

.page-news .news-item__sum {
  display: grid;
  grid-template-columns: 2.15rem minmax(0, 1fr) 1rem;
  grid-template-areas:
    "num title cue"
    ". meta meta";
  gap: .35rem .7rem;
  align-items: baseline;
  padding: .95rem .15rem;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius);
  transition: background-color .18s var(--ease);
}

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

.page-news .news-item__sum:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

.page-news .news-item__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: .78rem;
  line-height: 1.6;
  color: var(--cyan-400);
  text-align: right;
}

.page-news .news-item__title {
  grid-area: title;
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper-50);
  transition: color .18s var(--ease);
}

.page-news .news-item__meta {
  grid-area: meta;
  font-size: var(--fs-tag);
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--rock-300);
}

.page-news .news-item__cue {
  grid-area: cue;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--cyan-400);
  text-align: right;
}

.page-news .news-item__cue::before {
  content: "+";
}

.page-news .news-item[open] .news-item__cue::before {
  content: "−";
}

.page-news .news-item[open] .news-item__title {
  color: var(--cyan-200);
}

.page-news .news-item__sum:hover .news-item__title {
  color: var(--cyan-200);
}

.page-news .news-item__body {
  padding: 0 .15rem 1.1rem .15rem;
  margin-left: 0;
  color: var(--rock-300);
  font-size: var(--fs-sm);
  line-height: 1.75;
  max-width: 66ch;
}

.page-news .news-item__body p {
  margin: 0 0 .5rem;
}

.page-news .news-item__impact {
  display: inline-block;
  margin-top: .3rem;
  padding-top: .4rem;
  border-top: 1px dashed rgba(242, 180, 92, .4);
  font-size: var(--fs-tag);
  letter-spacing: .06em;
  color: var(--gold-200);
}

/* ---------- 过渡纹理 ---------- */
.page-news .news-divider {
  height: clamp(72px, 9vw, 120px);
  margin-bottom: var(--news-gap);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-news .news-divider img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: .72;
}

/* ---------- 节奏面板 ---------- */
.page-news .news-rhythm-section {
  padding-block: 0 clamp(3rem, 7vw, 5rem);
}

.page-news .rhythm-panel {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
  padding: clamp(1.25rem, 3.5vw, 2.75rem);
  border-radius: var(--news-radius);
  border: 1px solid rgba(63, 224, 208, .22);
  background: linear-gradient(150deg, rgba(18, 38, 61, .88), rgba(8, 17, 31, .94));
}

.page-news .rhythm-panel__title {
  font-family: var(--font-head);
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  font-weight: 700;
  line-height: 1.2;
  margin: .6rem 0 0;
  max-width: 20ch;
}

.page-news .rhythm-panel__lede {
  margin: .9rem 0 0;
  color: var(--rock-300);
  line-height: 1.75;
  max-width: 52ch;
}

.page-news .rhythm-key {
  display: grid;
  gap: .85rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.page-news .rhythm-key li {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--rock-300);
}

.page-news .rhythm-key strong {
  color: var(--paper-50);
  font-weight: 600;
}

.page-news .rhythm-key__dot {
  flex: 0 0 .55rem;
  width: .55rem;
  height: .55rem;
  border-radius: 50%;
  margin-top: .55rem;
}

.page-news .rhythm-key__dot--version {
  background: var(--cyan-400);
}

.page-news .rhythm-key__dot--batch {
  background: var(--gold-400);
}

.page-news .rhythm-key__dot--series {
  background: var(--cyan-200);
}

.page-news .rhythm-svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-news .rz-line line {
  stroke: rgba(200, 210, 220, .16);
  stroke-width: 1.5;
}

.page-news .rz-dot {
  transition: r .18s var(--ease);
}

.page-news .rz-dot--version {
  fill: var(--cyan-400);
}

.page-news .rz-dot--batch {
  fill: var(--gold-400);
}

.page-news .rz-dot--series {
  fill: var(--cyan-200);
}

.page-news .rz-dot:hover {
  r: 8;
}

.page-news .rhythm-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

.page-news .rhythm-legend__item {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-size: var(--fs-tag);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--rock-300);
}

.page-news .rhythm-legend__item .rhythm-key__dot {
  margin-top: 0;
}

.page-news .rhythm-panel__hint {
  margin: 1.4rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--rock-300);
}

.page-news .rhythm-panel__hint a {
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 208, .4);
}

.page-news .rhythm-panel__hint a:hover,
.page-news .rhythm-panel__hint a:focus-visible {
  color: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-news .news-backtop {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-top: 1.35rem;
  padding-bottom: .15rem;
  font-size: var(--fs-sm);
  color: var(--rock-300);
  text-decoration: none;
  border-bottom: 1px dashed rgba(200, 210, 220, .35);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-news .news-backtop:hover,
.page-news .news-backtop:focus-visible {
  color: var(--cyan-200);
  border-color: var(--cyan-400);
}

/* ---------- 中屏 ---------- */
@media (min-width: 720px) {
  .page-news .news-item__sum {
    grid-template-columns: 2.6rem minmax(0, 1fr) 11rem 1.1rem;
    grid-template-areas: "num title meta cue";
    gap: .5rem 1rem;
    padding: 1rem .2rem;
  }

  .page-news .news-item__meta {
    text-align: right;
  }

  .page-news .news-item__body {
    padding-left: calc(2.6rem + 1rem);
    max-width: 68ch;
  }

  .page-news .focus-card {
    padding: clamp(1.5rem, 3vw, 2.4rem);
    padding-left: calc(clamp(1.5rem, 3vw, 2.4rem) + 8px);
  }

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

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-news .news-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: start;
  }

  .page-news .news-rail {
    position: sticky;
    top: 104px;
    padding-top: .35rem;
  }

  .page-news .news-rail__list {
    flex-direction: column;
    gap: .1rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news .news-rail__link {
    justify-content: flex-start;
    border: 0;
    border-left: 2px solid rgba(200, 210, 220, .16);
    border-radius: 0;
    padding: .7rem .6rem .7rem .9rem;
    white-space: normal;
  }

  .page-news .news-rail__link .index-rail__num {
    flex: 0 0 auto;
  }

  .page-news .focus-card {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }

  .page-news .rhythm-panel {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: center;
  }

  .page-news .topic-band__media {
    aspect-ratio: 21 / 9;
  }

  .page-news .topic-band__media--series {
    aspect-ratio: 16 / 7;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item__sum,
  .page-news .news-item__title,
  .page-news .news-rail__link,
  .page-news .rz-dot,
  .page-news .news-backtop {
    transition: none;
  }
}