.page-news {
  --news-rail: 236px;
  --news-gap: clamp(20px, 4vw, 56px);
  --news-muted: rgba(154, 166, 191, .92);
  --news-ink-soft: rgba(10, 11, 13, .68);
  --news-rule: rgba(10, 11, 13, .12);
  background: var(--ink);
  color: var(--white);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: clamp(26px, 5vw, 52px) 0 clamp(38px, 7vw, 76px);
  background:
    radial-gradient(120% 92% at 92% 4%, rgba(224, 27, 46, .30), transparent 58%),
    radial-gradient(96% 80% at 0% 104%, rgba(47, 107, 255, .14), transparent 62%),
    var(--ink);
  overflow: hidden;
}

.page-news .news-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
  margin-top: clamp(20px, 4vw, 40px);
}

.page-news .news-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 10vw, 88px);
  line-height: .96;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-news .news-hero__lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--news-muted);
}

.page-news .news-hero__chips {
  margin-top: 22px;
}

.page-news .news-hero__media {
  margin: 0;
  border: 1px solid var(--line);
  position: relative;
}

.page-news .news-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(.92) contrast(1.06);
}

.page-news .news-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(118deg, rgba(224, 27, 46, .28) 0%, rgba(224, 27, 46, 0) 58%);
}

@media (min-width: 900px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  }
}

/* ---------- 列表区布局 ---------- */
.page-news .news-feed {
  padding: clamp(32px, 6vw, 68px) 0;
}

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

@media (min-width: 920px) {
  .page-news .news-layout {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 筛选条 ---------- */
.page-news .news-filters {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

@media (min-width: 920px) {
  .page-news .news-filters {
    position: sticky;
    top: calc(var(--header-h, 68px) + 20px);
  }
}

.page-news .news-filter-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  scroll-snap-type: x proximity;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

.page-news .news-filter-bar .filter-btn {
  flex: 0 0 auto;
  scroll-snap-align: start;
  appearance: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 16px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--slate);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-news .news-filter-bar .filter-btn:hover {
  color: var(--white);
  border-color: var(--slate);
}

.page-news .news-filter-bar .filter-btn:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-news .news-filter-bar .filter-btn.is-active {
  color: var(--white);
  background: var(--red);
  border-color: var(--red);
}

.page-news .news-filter-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  opacity: .72;
}

.page-news .filter-count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate);
}

@media (min-width: 920px) {
  .page-news .news-filter-bar {
    flex-direction: column;
    overflow: visible;
    padding: 0;
  }

  .page-news .news-filter-bar .filter-btn {
    width: 100%;
    justify-content: space-between;
  }
}

/* ---------- 条目流 ---------- */
.page-news .news-stream {
  display: flex;
  flex-direction: column;
}

.page-news .news-stream__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .18em;
  color: var(--slate);
}

.page-news .news-item {
  position: relative;
  display: grid;
  gap: 4px 18px;
  padding: 22px 6px 24px 16px;
  border-top: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: border-left-color .2s var(--ease), background-color .2s var(--ease);
}

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

.page-news .news-item:hover {
  border-left-color: var(--red);
  background: rgba(224, 27, 46, .05);
}

.page-news .news-item__tick {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-family: var(--font-mono);
  line-height: 1;
  color: var(--red);
}

.page-news .news-item__tick-num {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -.02em;
}

.page-news .news-item__tick-unit {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-news .news-item__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  line-height: 1.36;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-news .news-item__desc {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--news-muted);
}

.page-news .news-item__thumb {
  margin: 14px 0 0;
  max-width: 260px;
}

.page-news .news-item__thumb img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
  filter: saturate(.86) contrast(1.04);
}

@media (min-width: 720px) {
  .page-news .news-item {
    grid-template-columns: 74px minmax(0, 1fr);
    grid-template-areas: "tick body";
    column-gap: 22px;
    align-items: start;
  }

  .page-news .news-item__tick {
    grid-area: tick;
  }

  .page-news .news-item__body {
    grid-area: body;
  }

  .page-news .news-item--thumb {
    grid-template-columns: 74px minmax(0, 1fr) 152px;
    grid-template-areas: "tick .page-news thumb";
  }

  .page-news .news-item--thumb .news-item__thumb {
    grid-area: thumb;
    margin: 4px 0 0;
    max-width: none;
  }
}

/* ---------- 订阅提示 ---------- */
.page-news .news-cta {
  display: grid;
  gap: 18px;
  margin-top: 28px;
  padding: clamp(22px, 3.6vw, 34px);
  background: linear-gradient(118deg, var(--red) 0%, var(--red-deep) 100%);
  border-left: 2px solid var(--white);
}

.page-news .news-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-news .news-cta__desc {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .86);
}

.page-news .news-cta__btn {
  background: var(--white);
  border: 1px solid var(--white);
  color: var(--red);
}

.page-news .news-cta__btn:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}

@media (min-width: 820px) {
  .page-news .news-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

/* ---------- 专题条 ---------- */
.page-news .news-topics {
  position: relative;
  padding: clamp(42px, 7vw, 86px) 0 clamp(38px, 6vw, 72px);
  background: var(--panel);
  overflow: hidden;
}

.page-news .news-topics__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-news .news-topics__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .2;
  filter: grayscale(.45) contrast(1.15);
}

.page-news .news-topics__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(21, 23, 28, .9) 0%, rgba(21, 23, 28, .99) 100%);
}

.page-news .news-topics__head,
.page-news .news-topics__rail {
  position: relative;
  z-index: 1;
}

.page-news .news-topics__head .section__lead {
  max-width: 52ch;
}

.page-news .news-topics__rail {
  display: flex;
  gap: 16px;
  margin-top: clamp(22px, 3.4vw, 36px);
  padding: 4px var(--gutter) 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

.page-news .topic-card {
  flex: 0 0 min(80vw, 440px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink);
  border: 1px solid var(--line);
  border-top: 3px solid var(--red);
}

.page-news .topic-card:nth-child(2) {
  border-top-color: var(--green);
}

.page-news .topic-card__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}

.page-news .topic-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 25px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-news .topic-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--news-muted);
}

.page-news .topic-card__meta {
  margin: auto 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate);
}

@media (min-width: 1280px) {
  .page-news .news-topics__rail {
    padding-left: max(var(--gutter), calc((100% - var(--shell)) / 2));
    padding-right: max(var(--gutter), calc((100% - var(--shell)) / 2));
  }
}

/* ---------- 更新节奏 ---------- */
.page-news .news-cadence {
  padding: clamp(42px, 7vw, 88px) 0;
  color: var(--ink);
}

.page-news .cadence-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-news .news-cadence .section__title {
  margin: 12px 0 0;
  color: var(--ink);
}

.page-news .cadence-lead {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--news-ink-soft);
}

.page-news .cadence-actions {
  margin-top: 24px;
}

.page-news .cadence-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .cadence-list li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 8px 18px;
  align-items: baseline;
  padding: 18px 0;
  border-top: 1px solid var(--news-rule);
}

.page-news .cadence-list li:last-child {
  border-bottom: 1px solid var(--news-rule);
}

.page-news .cadence-time {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--red);
}

.page-news .cadence-text {
  font-size: 15px;
  line-height: 1.72;
  color: var(--news-ink-soft);
}

@media (min-width: 900px) {
  .page-news .cadence-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    align-items: start;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-filter-bar .filter-btn {
    transition: none;
  }

  .page-news .news-topics__rail {
    scroll-behavior: auto;
  }
}