.page-news {
  --news-rule: rgba(8, 20, 24, .13);
  --news-rule-dark: rgba(191, 227, 232, .22);
  --news-pad: clamp(56px, 7vw, 104px);
  background: var(--bb-sand);
  color: var(--bb-ink);
  font-family: var(--bb-font-zh);
  overflow-x: hidden;
}

.page-news .news-crumb {
  padding-top: 18px;
  padding-bottom: 4px;
}

.page-news .news-crumb a {
  color: var(--bb-trench);
  text-decoration: none;
}

.page-news .news-crumb a:hover,
.page-news .news-crumb a:focus-visible {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  overflow: hidden;
  margin-top: clamp(10px, 2vw, 22px);
  padding: clamp(38px, 6.4vw, 88px) 0 clamp(38px, 6vw, 78px);
  color: var(--bb-sand);
  background: linear-gradient(158deg, var(--bb-deep) 0%, #073649 46%, var(--bb-trench) 100%);
}

.page-news .news-hero__wash {
  position: absolute;
  top: -25%;
  right: -20%;
  width: 66%;
  height: 152%;
  transform: skewX(-14deg);
  background: linear-gradient(152deg, rgba(255, 107, 53, .45), rgba(255, 209, 102, .14) 54%, transparent 82%);
  pointer-events: none;
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--bb-coral) 0%, var(--bb-yellow) 40%, var(--bb-green) 72%, var(--bb-trench) 100%);
}

.page-news .news-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 54px);
}

.page-news .news-hero__title {
  margin: 12px 0 18px;
  font-family: var(--bb-font-zh);
  font-size: clamp(3rem, 11vw, 6.2rem);
  font-weight: 900;
  line-height: .92;
  letter-spacing: -.03em;
  color: var(--bb-sand);
}

.page-news .news-hero__lead {
  max-width: 56ch;
  margin: 0 0 26px;
  color: var(--bb-foam);
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .news-hero__mark {
  position: relative;
  padding-left: clamp(16px, 2.6vw, 30px);
  border-left: 1px solid var(--news-rule-dark);
}

.page-news .news-hero__no {
  display: block;
  font-family: var(--bb-font-display);
  font-size: clamp(4.4rem, 18vw, 9.6rem);
  font-weight: 200;
  line-height: .78;
  letter-spacing: -.02em;
  text-transform: uppercase;
  color: transparent;
  -webkit-text-stroke: 1px rgba(191, 227, 232, .6);
}

.page-news .news-hero__round {
  display: block;
  margin-top: 14px;
  font-family: var(--bb-font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--bb-mist);
}

.page-news .news-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-size: .82rem;
  letter-spacing: .02em;
  color: var(--bb-mist);
}

.page-news .news-hero__facts .bb-num {
  margin-right: 5px;
  font-size: 1.24rem;
  color: var(--bb-yellow);
}

/* ---------- 本期头条 ---------- */
.page-news .news-feature {
  padding: var(--news-pad) 0 clamp(40px, 5vw, 72px);
  background: var(--bb-sand);
}

.page-news .news-feature__grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 48px);
  align-items: start;
}

.page-news .news-feature__media {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 26px));
  margin: 0;
}

.page-news .news-feature__text {
  margin: 0 0 14px;
  font-size: 1rem;
  line-height: 1.85;
  color: #23373f;
  max-width: 62ch;
}

.page-news .news-feature__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 2px solid var(--bb-coral);
}

.page-news .news-feature__stats dt {
  font-family: var(--bb-font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--bb-trench);
}

.page-news .news-feature__stats dd {
  margin: 6px 0 0;
  font-family: var(--bb-font-mono);
  font-size: 1.42rem;
  color: var(--bb-ink);
}

.page-news .news-feature__link {
  display: inline-block;
  margin-top: 22px;
  font-family: var(--bb-font-mono);
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--bb-coral);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

.page-news .news-feature__link:hover {
  color: var(--bb-trench);
}

/* ---------- 专题研究板 ---------- */
.page-news .news-research {
  position: relative;
  padding: var(--news-pad) 0 calc(var(--news-pad) + 12px);
  color: var(--bb-sand);
  background: var(--bb-deep);
  clip-path: polygon(0 28px, 100% 0, 100% 100%, 0 100%);
}

.page-news .news-section-head {
  max-width: 68ch;
}

.page-news .news-section-head__title {
  margin: 10px 0 16px;
  font-family: var(--bb-font-zh);
  font-size: clamp(1.9rem, 4.4vw, 3.2rem);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.06;
  color: var(--bb-sand);
}

.page-news .news-section-head__lead {
  margin: 0;
  font-size: .98rem;
  line-height: 1.9;
  color: var(--bb-mist);
}

.page-news .news-research__track {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
  margin-top: clamp(26px, 3.4vw, 44px);
}

.page-news .news-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 20px 20px 22px;
  border-top: 2px solid var(--bb-coral);
  background: rgba(191, 227, 232, .07);
}

.page-news .news-card__media {
  margin: 0 0 16px;
  aspect-ratio: 3 / 2;
}

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

.page-news .news-card__issue {
  margin: 0 0 8px;
  font-family: var(--bb-font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--bb-foam);
}

.page-news .news-card__issue .bb-num {
  color: var(--bb-yellow);
}

.page-news .news-card__title {
  margin: 0 0 12px;
  font-size: 1.14rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--bb-sand);
}

.page-news .news-card__summary {
  margin: 0;
  font-size: .9rem;
  line-height: 1.82;
  color: var(--bb-mist);
}

.page-news .news-spark {
  margin: 18px 0 0;
}

.page-news .news-spark svg {
  display: block;
  width: 100%;
  height: 42px;
}

.page-news .news-spark__line {
  fill: none;
  stroke: var(--bb-green);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}

.page-news .news-spark__cap {
  margin: 6px 0 0;
  font-family: var(--bb-font-mono);
  font-size: .66rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--bb-foam);
}

.page-news .news-card__terms {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--news-rule-dark);
}

.page-news .news-card__terms dt {
  font-family: var(--bb-font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--bb-yellow);
}

.page-news .news-card__terms dd {
  margin: 5px 0 0;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--bb-mist);
}

.page-news .news-card__more {
  margin-top: auto;
  padding-top: 18px;
  font-family: var(--bb-font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--bb-coral-hot);
  text-decoration: none;
}

.page-news .news-card__more:hover,
.page-news .news-card__more:focus-visible {
  color: var(--bb-yellow);
  text-decoration: underline;
}

/* ---------- 动态列表 ---------- */
.page-news .news-stream {
  padding: var(--news-pad) 0;
  background: var(--bb-sand);
}

.page-news .news-stream__intro {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  align-items: end;
  margin-bottom: clamp(26px, 3.6vw, 46px);
}

.page-news .news-stream__heading {
  margin: 10px 0 14px;
  font-size: clamp(1.7rem, 4vw, 2.7rem);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--bb-ink);
}

.page-news .news-stream__lead {
  margin: 0;
  max-width: 60ch;
  font-size: .96rem;
  line-height: 1.9;
  color: #2b4048;
}

.page-news .news-stream__texture {
  margin: 0;
  max-width: 220px;
}

.page-news .news-stream__layout {
  display: grid;
  gap: clamp(22px, 3.4vw, 46px);
  align-items: start;
}

.page-news .news-stream__railtitle {
  margin: 0;
  font-family: var(--bb-font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--bb-trench);
}

.page-news .news-stream__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-stream__railnote {
  margin: 16px 0 0;
  font-family: var(--bb-font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  line-height: 1.8;
  color: #4a606a;
}

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

.page-news .news-item {
  display: grid;
  gap: 10px;
  padding: 20px 0;
  border-bottom: 1px solid var(--news-rule);
}

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
}

.page-news .news-item__cat {
  font-size: .72rem;
  letter-spacing: .06em;
  padding: 3px 9px;
  background: var(--bb-foam);
  color: var(--bb-deep);
}

.page-news .news-item__stage {
  font-family: var(--bb-font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  padding: 3px 0;
  color: var(--bb-coral);
}

.page-news .news-item__main {
  min-width: 0;
}

.page-news .news-item__title {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--bb-ink);
}

.page-news .news-item__more {
  margin-top: 6px;
}

.page-news .news-item__more summary {
  display: inline-block;
  cursor: pointer;
  list-style: none;
  font-family: var(--bb-font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--bb-trench);
}

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

.page-news .news-item__more summary::before {
  content: "+ ";
  color: var(--bb-coral);
}

.page-news .news-item__more[open] summary::before {
  content: "− ";
}

.page-news .news-item__more summary:hover {
  color: var(--bb-coral);
}

.page-news .news-item__more p {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: .9rem;
  line-height: 1.85;
  color: #2b4048;
}

.page-news .news-item__time {
  font-size: .74rem;
  letter-spacing: .06em;
  color: #4a606a;
}

/* ---------- 版本与适配 ---------- */
.page-news .news-versions {
  padding: var(--news-pad) 0;
  background: linear-gradient(118deg, #eef6f7 0%, var(--bb-mist) 100%);
  border-top: 1px solid rgba(10, 74, 99, .14);
}

.page-news .news-versions__inner {
  display: grid;
  gap: clamp(24px, 3.6vw, 48px);
  align-items: start;
}

.page-news .news-versions__media {
  margin: 0;
  border-left: 4px solid var(--bb-coral);
}

.page-news .news-versions__title {
  margin: 10px 0 14px;
  font-size: clamp(1.7rem, 4vw, 2.7rem);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--bb-ink);
}

.page-news .news-versions__lead {
  margin: 0 0 22px;
  max-width: 58ch;
  font-size: .96rem;
  line-height: 1.9;
  color: #23373f;
}

.page-news .news-versions__list {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(10, 74, 99, .22);
}

.page-news .news-versions__list li {
  display: grid;
  gap: 10px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(10, 74, 99, .18);
}

.page-news .news-versions__ver {
  align-self: start;
  justify-self: start;
  padding: 3px 10px;
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--bb-sand);
  background: var(--bb-trench);
}

.page-news .news-versions__list h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--bb-ink);
}

.page-news .news-versions__list p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.85;
  color: #2b4048;
}

/* ---------- 继续查看 ---------- */
.page-news .news-next {
  padding: clamp(46px, 6vw, 86px) 0;
  color: var(--bb-sand);
  background: var(--bb-deep);
}

.page-news .news-next__title {
  margin: 10px 0 26px;
  font-size: clamp(1.6rem, 3.8vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.14;
  color: var(--bb-sand);
}

.page-news .news-next__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--news-rule-dark);
}

.page-news .news-next__list li {
  border-bottom: 1px solid var(--news-rule-dark);
}

.page-news .news-next__link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 22px;
  padding: 20px 0;
  text-decoration: none;
  color: var(--bb-sand);
}

.page-news .news-next__link strong {
  font-size: 1.14rem;
  font-weight: 700;
}

.page-news .news-next__link span {
  font-size: .88rem;
  line-height: 1.7;
  color: var(--bb-mist);
}

.page-news .news-next__link::after {
  content: "→";
  margin-left: auto;
  color: var(--bb-coral);
}

.page-news .news-next__link:hover strong,
.page-news .news-next__link:focus-visible strong {
  color: var(--bb-yellow);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .news-versions__list li {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: start;
    column-gap: 20px;
  }
}

@media (min-width: 760px) {
  .page-news .news-item {
    grid-template-columns: 132px minmax(0, 1fr) 74px;
    align-items: start;
    column-gap: 26px;
    padding: 22px 0;
  }

  .page-news .news-item__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

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

  .page-news .news-next__list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 0;
    gap: 0;
  }

  .page-news .news-next__list li {
    border-top: 2px solid var(--bb-coral);
    border-bottom: 1px solid var(--news-rule-dark);
    margin-right: -1px;
  }

  .page-news .news-next__link {
    display: block;
    height: 100%;
    padding: 20px 18px 24px;
  }

  .page-news .news-next__link span {
    display: block;
    margin-top: 8px;
  }

  .page-news .news-next__link::after {
    display: block;
    margin: 16px 0 0;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero__inner {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }

  .page-news .news-feature__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-news .news-stream__intro {
    grid-template-columns: minmax(0, 1fr) 220px;
  }

  .page-news .news-versions__inner {
    grid-template-columns: 5fr 7fr;
  }
}

@media (min-width: 880px) {
  .page-news .news-research__track {
    grid-auto-flow: column;
    grid-auto-columns: minmax(290px, 1fr);
    overflow-x: auto;
    padding-bottom: 18px;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }

  .page-news .news-research__track > * {
    scroll-snap-align: start;
  }
}

@media (min-width: 960px) {
  .page-news .news-stream__layout {
    grid-template-columns: 252px minmax(0, 1fr);
  }

  .page-news .news-stream__rail {
    position: sticky;
    top: calc(var(--bb-header-h) + 26px);
    padding-right: 20px;
    border-right: 1px solid var(--news-rule);
  }

  .page-news .news-stream__filters {
    flex-direction: column;
    align-items: stretch;
  }

  .page-news .news-stream__filters .bb-tag {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-research__track {
    scroll-snap-type: none;
    scroll-behavior: auto;
  }
}