.page-news {
  --news-gap: clamp(16px, 2.2vw, 22px);
  --news-line: 1px solid var(--steel);
  background: var(--navy);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  padding-top: clamp(16px, 3vw, 26px);
  padding-bottom: 4px;
}

/* ---------- 首屏拼贴 ---------- */
.page-news .news-hero {
  position: relative;
  overflow: hidden;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto auto;
  width: 58%;
  height: 180%;
  background:
    radial-gradient(circle at 68% 38%, rgba(255, 106, 19, .20), transparent 62%),
    radial-gradient(circle at 22% 78%, rgba(20, 210, 160, .14), transparent 58%);
  pointer-events: none;
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--steel) 20%, var(--steel) 80%, transparent);
}

.page-news .news-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding-top: clamp(26px, 5vw, 54px);
  padding-bottom: clamp(28px, 5vw, 50px);
}

.page-news .news-hero-copy h1 {
  font-size: clamp(32px, 7vw, 66px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  max-width: 15ch;
}

.page-news .news-hero-copy p {
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.8;
  color: var(--muted);
  margin: 0 0 24px;
  max-width: 52ch;
}

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

.page-news .news-hero-card {
  position: relative;
  border: var(--news-line);
  border-radius: var(--radius);
  background: linear-gradient(158deg, var(--panel), rgba(16, 38, 63, .45));
  padding: 22px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
}

.page-news .news-hero-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--amber), var(--mint));
}

.page-news .news-hero-badge {
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-news .news-hero-ver {
  font-family: var(--font-mono);
  font-size: clamp(38px, 4.4vw, 54px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
  letter-spacing: -0.02em;
}

.page-news .news-hero-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-news .news-hero-card .copy-btn {
  margin-top: 6px;
  align-self: flex-start;
}

.page-news .news-hero-inner > .annotation-v {
  display: none;
}

/* ---------- 动态流 ---------- */
.page-news .news-stream {
  padding-top: clamp(30px, 5vw, 54px);
}

.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 24px;
}

.page-news .filter-btn {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  color: var(--muted);
  background: transparent;
  border: var(--news-line);
  border-radius: 999px;
  padding: 10px 17px;
  cursor: pointer;
  transition: color .16s ease, border-color .16s ease, background-color .16s ease;
}

.page-news .filter-btn:hover,
.page-news .filter-btn:focus-visible {
  color: var(--ink);
  border-color: var(--orange);
}

.page-news .filter-btn.is-active {
  color: var(--navy);
  background: var(--orange);
  border-color: var(--orange);
  font-weight: 700;
}

.page-news .news-feed {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
}

.page-news .news-feed [data-category].is-filtered-out {
  display: none;
}

.page-news .news-item {
  display: flex;
  flex-direction: column;
  border: var(--news-line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
  transition: border-color .16s ease, transform .16s ease;
}

.page-news .news-item:hover,
.page-news .news-item:focus-within {
  border-color: var(--orange);
  transform: translateY(-2px);
}

.page-news .news-item-visual {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, var(--panel), #0A1E33);
  aspect-ratio: 3 / 2;
}

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

.page-news .news-item-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.2vw, 24px);
}

.page-news .news-item-body h3 {
  margin: 0;
  font-size: clamp(18px, 2.1vw, 23px);
  font-weight: 700;
  line-height: 1.42;
}

.page-news .news-item-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .news-item-body .tag {
  align-self: flex-start;
}

.page-news .news-item-foot {
  margin-top: auto;
  padding-top: 14px;
  border-top: var(--news-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-news .news-item-foot .ver {
  color: var(--amber);
}

/* ---------- 更新节奏 ---------- */
.page-news .news-cadence {
  padding-top: clamp(38px, 6vw, 68px);
}

.page-news .cadence-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
}

.page-news .cadence-card {
  position: relative;
  border: var(--news-line);
  border-radius: var(--radius);
  background: rgba(16, 38, 63, .55);
  padding: 22px 20px 24px;
  border-left: 3px solid var(--electro);
}

.page-news .cadence-card:nth-child(2) {
  border-left-color: var(--mint);
}

.page-news .cadence-card:nth-child(3) {
  border-left-color: var(--orange);
}

.page-news .cadence-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  color: var(--electro);
  margin-bottom: 12px;
}

.page-news .cadence-card:nth-child(2) .cadence-num {
  color: var(--mint);
}

.page-news .cadence-card:nth-child(3) .cadence-num {
  color: var(--orange);
}

.page-news .cadence-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
}

.page-news .cadence-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 收尾入口 ---------- */
.page-news .news-cta {
  padding-top: clamp(38px, 6vw, 68px);
  padding-bottom: clamp(40px, 7vw, 80px);
}

.page-news .news-cta-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  border: var(--news-line);
  border-radius: var(--radius);
  background:
    linear-gradient(120deg, rgba(255, 106, 19, .12), transparent 46%),
    linear-gradient(300deg, rgba(20, 210, 160, .12), transparent 52%),
    var(--panel);
  padding: clamp(24px, 4vw, 46px);
}

.page-news .news-cta-copy h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 900;
  line-height: 1.28;
}

.page-news .news-cta-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 56ch;
}

.page-news .news-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 700px) {
  .page-news .cadence-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news .news-cta-inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-news .news-cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 880px) {
  .page-news .news-hero-inner {
    grid-template-columns: 40px minmax(0, 1.35fr) minmax(250px, .65fr);
    column-gap: clamp(24px, 4vw, 56px);
    align-items: end;
  }

  .page-news .news-hero-copy {
    grid-column: 2;
  }

  .page-news .news-hero-card {
    grid-column: 3;
  }

  .page-news .news-hero-inner > .annotation-v {
    display: block;
    grid-column: 1;
    align-self: start;
    justify-self: center;
    color: var(--muted);
  }

  .page-news .news-feed {
    grid-template-columns: repeat(12, 1fr);
  }

  .page-news .news-item {
    grid-column: span 7;
  }

  .page-news .news-item--narrow {
    grid-column: span 5;
  }

  .page-news .news-item--wide {
    grid-column: span 12;
    flex-direction: row;
    align-items: stretch;
  }

  .page-news .news-item--wide .news-item-visual {
    flex: 0 0 44%;
    max-width: 44%;
    aspect-ratio: auto;
    min-height: 260px;
  }

  .page-news .news-item--wide .news-item-body {
    flex: 1 1 auto;
    justify-content: center;
    padding: clamp(24px, 3vw, 36px);
  }

  .page-news .news-item--wide .news-item-body h3 {
    font-size: clamp(22px, 2.5vw, 30px);
  }
}

@media (min-width: 1140px) {
  .page-news .news-hero-copy h1 {
    max-width: 13ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .filter-btn {
    transition: none;
  }

  .page-news .news-item:hover {
    transform: none;
  }
}