.page-news {
  background: var(--bb-void);
  color: var(--bb-paper);
  font-family: var(--bb-sans);
  font-size: 16px;
  line-height: 1.65;
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-news p {
  margin: 0;
  color: rgba(237, 234, 227, 0.78);
}

.page-news .bb-media__frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--bb-radius-sm);
  background: linear-gradient(135deg, #131A20 0%, #1B2430 45%, #2A2118 100%);
}

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

.page-news .bb-media__caption {
  margin-top: 0.65rem;
  font-size: 0.8125rem;
  color: var(--bb-steel);
}

/* ---------- 首屏 ---------- */
.page-news .news-masthead {
  display: grid;
  gap: var(--bb-gap);
  padding: clamp(1.5rem, 4vw, 2.25rem) 0 clamp(2rem, 5vw, 3.25rem);
}

.page-news .news-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--bb-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--bb-lime);
}

.page-news .news-kicker__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bb-lime);
  box-shadow: 0 0 0 4px var(--bb-lime-dim);
}

.page-news .news-masthead__title {
  margin: 0.75rem 0 0;
  font-family: var(--bb-serif);
  font-weight: 900;
  font-size: clamp(2rem, 7.2vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--bb-paper);
}

.page-news .news-masthead__lead {
  margin-top: 1rem;
  max-width: 58ch;
  font-size: 1rem;
}

.page-news .news-masthead__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-news .news-masthead__panel {
  padding: 1.25rem clamp(1rem, 3vw, 1.5rem);
  border-radius: var(--bb-radius);
}

.page-news .news-meter {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-news .news-meter__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--bb-line-soft);
}

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

.page-news .news-meter__label {
  font-size: 0.875rem;
  color: var(--bb-steel);
}

.page-news .news-meter__value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--bb-lime);
}

.page-news .news-meter__note {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--bb-line-soft);
  font-size: 0.8125rem;
  color: var(--bb-steel);
}

/* ---------- 章节间隔 ---------- */
.page-news .news-section + .news-section {
  margin-top: clamp(2.75rem, 6vw, 4.5rem);
}

/* ---------- 01 栏目 ---------- */
.page-news .news-columns {
  gap: var(--bb-gap);
}

.page-news .news-column {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: 1.5rem 1.35rem;
  background: var(--bb-carbon);
  border: 1px solid var(--bb-line);
  border-radius: var(--bb-radius);
  overflow: hidden;
  transition: border-color var(--bb-dur), transform var(--bb-dur);
}

.page-news .news-column::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--bb-melt);
  opacity: 0.9;
}

.page-news .news-column:hover {
  border-color: rgba(183, 245, 66, 0.35);
  transform: translateY(-3px);
}

.page-news .news-column .bb-card__title {
  margin: 0;
  font-family: var(--bb-serif);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.35;
  color: var(--bb-paper);
}

.page-news .news-column p {
  font-size: 0.9375rem;
}

.page-news .news-column__meta {
  margin-top: auto;
  padding-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--bb-cyan);
  letter-spacing: 0.02em;
}

/* ---------- 02 条目流 ---------- */
.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.page-news .news-filter .bb-chip {
  cursor: pointer;
}

.page-news .news-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.page-news .news-feature {
  position: relative;
  margin-bottom: var(--bb-gap);
  border: 1px solid var(--bb-line);
  border-radius: calc(var(--bb-radius) + 4px);
  background: var(--bb-carbon);
  overflow: hidden;
}

.page-news .news-feature__media .bb-media__frame {
  aspect-ratio: 16 / 10;
  border-radius: 0;
}

.page-news .news-feature__body {
  padding: clamp(1.25rem, 3vw, 2rem);
}

.page-news .news-feature__title {
  margin: 0.8rem 0 0;
  font-family: var(--bb-serif);
  font-weight: 800;
  font-size: clamp(1.4rem, 4.4vw, 2rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--bb-paper);
}

.page-news .news-feature__excerpt {
  margin-top: 0.8rem;
  max-width: 68ch;
}

.page-news .news-byline {
  margin-top: 1rem;
  font-size: 0.8125rem;
  color: var(--bb-steel);
}

.page-news .news-stream {
  display: grid;
  gap: var(--bb-gap);
}

.page-news .news-item {
  position: relative;
  overflow: hidden;
  padding: clamp(1.1rem, 2.6vw, 1.5rem);
  border: 1px solid var(--bb-line);
  border-radius: var(--bb-radius);
  background: var(--bb-carbon);
  transition: border-color var(--bb-dur), transform var(--bb-dur);
}

.page-news .news-item::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transform: translateX(-120%);
  background: linear-gradient(105deg, transparent 30%, rgba(183, 245, 66, 0.16) 50%, transparent 70%);
}

.page-news .news-item:hover,
.page-news .news-item:focus-within {
  border-color: rgba(183, 245, 66, 0.32);
  transform: translateY(-3px);
}

.page-news .news-item:hover::after {
  opacity: 1;
  animation: news-sweep 900ms ease-out 1;
}

@keyframes news-sweep {
  0% { transform: translateX(-120%); }
  100% { transform: translateX(120%); }
}

.page-news .news-item .bb-tag {
  transition: transform var(--bb-dur);
}

.page-news .news-item:hover .bb-tag {
  transform: translateY(-2px);
}

.page-news .news-item__media {
  margin-bottom: 1rem;
}

.page-news .news-item__media .bb-media__frame {
  aspect-ratio: 3 / 2;
}

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.page-news .news-item__time {
  font-size: 0.75rem;
  color: var(--bb-steel);
  letter-spacing: 0.02em;
}

.page-news .news-item__title {
  margin: 0;
  font-family: var(--bb-serif);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.38;
  color: var(--bb-paper);
}

.page-news .news-item__excerpt {
  margin-top: 0.6rem;
  font-size: 0.875rem;
}

/* ---------- 03 专题系列 ---------- */
.page-news .news-series {
  display: grid;
  gap: var(--bb-gap);
}

.page-news .news-series__item {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid var(--bb-line);
  border-left: 3px solid var(--bb-lime);
  border-radius: var(--bb-radius);
  background: linear-gradient(180deg, var(--bb-carbon-2) 0%, var(--bb-carbon) 100%);
  transition: border-color var(--bb-dur), border-left-color var(--bb-dur);
}

.page-news .news-series__item:hover,
.page-news .news-series__item:focus-within {
  border-left-color: var(--bb-score);
  outline: none;
}

.page-news .news-series__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
}

.page-news .news-series__title {
  margin: 0;
  font-family: var(--bb-serif);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.35;
  color: var(--bb-paper);
}

.page-news .news-series__count {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--bb-lime);
  white-space: nowrap;
}

.page-news .news-series__desc {
  margin-top: 0.6rem;
  max-width: 74ch;
  font-size: 0.9375rem;
}

.page-news .news-series__track {
  position: relative;
  height: 6px;
  margin-top: 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.page-news .news-series__bar {
  display: block;
  height: 100%;
  width: var(--bb-fill, 0%);
  border-radius: inherit;
  background: var(--bb-melt);
}

.page-news .news-series__order {
  margin-top: 0.7rem;
  font-size: 0.75rem;
  color: var(--bb-steel);
  letter-spacing: 0.02em;
}

.page-news .news-series__more {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin: 0;
  font-size: 0.875rem;
  color: var(--bb-steel);
  transition: max-height var(--bb-dur), opacity var(--bb-dur), margin var(--bb-dur);
}

.page-news .news-series__item:hover .news-series__more,
.page-news .news-series__item:focus-within .news-series__more {
  max-height: 7rem;
  opacity: 1;
  margin-top: 0.7rem;
}

.page-news .news-series__photo {
  margin: var(--bb-gap) 0 0;
}

.page-news .news-series__photo .bb-media__frame {
  aspect-ratio: 4 / 3;
}

/* ---------- 04 回溯与订阅 ---------- */
.page-news .news-recall {
  gap: var(--bb-gap);
}

.page-news .news-recall__item {
  padding: 1.3rem;
  border: 1px solid var(--bb-line);
  border-radius: var(--bb-radius);
  background: var(--bb-glass);
}

.page-news .news-recall__item h3 {
  margin: 0 0 0.55rem;
  font-family: var(--bb-serif);
  font-weight: 700;
  font-size: 1rem;
  color: var(--bb-paper);
}

.page-news .news-recall__item p {
  font-size: 0.875rem;
}

.page-news .news-recall__links {
  margin-top: 0.9rem;
}

.page-news .news-recall__links .bb-link {
  font-size: 0.875rem;
  color: var(--bb-cyan);
}

.page-news .news-subscribe__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: var(--bb-gap);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid var(--bb-line);
  border-radius: var(--bb-radius);
  background: linear-gradient(120deg, rgba(183, 245, 66, 0.12) 0%, rgba(255, 90, 43, 0.09) 100%);
}

.page-news .news-subscribe__note {
  flex: 1 1 22rem;
  font-size: 0.9375rem;
  color: var(--bb-paper);
}

.page-news .news-toplink {
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  text-align: center;
}

.page-news .news-toplink .bb-link {
  font-family: var(--bb-mono);
  font-size: 0.8125rem;
  color: var(--bb-steel);
}

/* ---------- 中屏 ---------- */
@media (min-width: 720px) {
  .page-news .news-stream {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .page-news .news-stream > .news-item:nth-child(odd) {
    margin-top: 2.25rem;
  }

  .page-news .news-feature__body {
    display: grid;
    gap: 0.5rem;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-news {
    font-size: 15px;
  }

  .page-news .news-masthead {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    padding-bottom: clamp(2.5rem, 5vw, 4rem);
  }

  .page-news .news-masthead__panel {
    align-self: end;
  }

  .page-news .news-feature {
    display: grid;
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: stretch;
  }

  .page-news .news-feature__media .bb-media__frame {
    height: 100%;
    aspect-ratio: auto;
    min-height: 22rem;
  }

  .page-news .news-feature__body {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .page-news .news-series {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-news .news-series__photo {
    margin-top: calc(var(--bb-gap) * 1.2);
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .news-column,
  .page-news .news-item,
  .page-news .news-series__item,
  .page-news .news-series__more,
  .page-news .news-item .bb-tag {
    transition: none;
  }

  .page-news .news-item:hover,
  .page-news .news-item:focus-within,
  .page-news .news-column:hover {
    transform: none;
  }

  .page-news .news-item:hover::after {
    animation: none;
    opacity: 0;
  }
}

.page-news {
  --bb-fill: currentColor;
}