.page-news {
  --news-wrap-w: 1180px;
  --news-gap: clamp(16px, 2.2vw, 28px);
  background: var(--ink-950);
  color: var(--text-100);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: hidden;
}

.page-news .news-wrap {
  width: min(var(--news-wrap-w), calc(100% - var(--edge) * 2));
  margin-inline: auto;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding-top: clamp(20px, 4vw, 44px);
  padding-bottom: clamp(20px, 3.4vw, 34px);
}

.page-news .news-hero .breadcrumbs {
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-news .news-hero__title {
  margin: 10px 0 16px;
  font-size: clamp(30px, 6vw, 56px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
  max-width: 15ch;
}

.page-news .news-hero__lede {
  margin: 0;
  max-width: 44ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--text-300);
}

.page-news .news-hero__facts {
  list-style: none;
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: clamp(16px, 2.4vw, 22px) 0 0;
  border-top: 1px solid var(--ink-700);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px var(--news-gap);
}

.page-news .news-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-news .news-hero__num {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

.page-news .news-hero__desc {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-300);
}

/* ---------- 专题带 ---------- */
.page-news .news-feature {
  margin-top: clamp(16px, 3vw, 28px);
}

.page-news .news-feature__banner {
  position: relative;
  min-height: clamp(250px, 44vw, 380px);
  display: flex;
  align-items: flex-end;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 34px));
  overflow: hidden;
  background: var(--ink-850);
}

.page-news .news-feature__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.page-news .news-feature__banner::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(178deg, rgba(4, 18, 27, 0.18) 0%, rgba(4, 18, 27, 0.86) 72%, rgba(4, 18, 27, 0.97) 100%);
}

.page-news .news-feature__copy {
  position: relative;
  z-index: 2;
  padding: clamp(20px, 4vw, 40px);
  max-width: 60ch;
}

.page-news .news-feature__title {
  margin: 8px 0 10px;
  font-size: clamp(21px, 3.8vw, 34px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-news .news-feature__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-300);
}

.page-news .feature-rail {
  margin-top: clamp(14px, 2.4vw, 22px);
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 10px;
  -webkit-overflow-scrolling: touch;
}

.page-news .feature-rail:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 4px;
}

.page-news .feature-card {
  flex: 0 0 min(78vw, 292px);
  scroll-snap-align: start;
  background: var(--ink-850);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.22s ease, transform 0.22s ease;
}

.page-news .feature-card:hover,
.page-news .feature-card:focus-within {
  border-color: var(--track-600);
  transform: translateY(-2px);
}

.page-news .feature-card__kicker {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--track-400);
}

.page-news .feature-card__title {
  margin: 0;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 700;
}

.page-news .feature-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.68;
  color: var(--text-300);
}

.page-news .feature-card__meta {
  margin-top: auto;
  padding-top: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
}

/* ---------- 条目流 ---------- */
.page-news .news-index {
  margin-top: clamp(44px, 7vw, 88px);
}

.page-news .news-index__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 36px);
}

.page-news .news-side {
  order: -1;
}

.page-news .news-side__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-300);
}

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

.page-news .news-side__link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 15px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--ink-700);
  color: var(--text-300);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-news .news-side__link .mono {
  font-size: 12px;
  opacity: 0.75;
}

.page-news .news-side__link:hover,
.page-news .news-side__link:focus-visible {
  color: var(--text-100);
  border-color: var(--cyan-400);
}

.page-news .news-side__link.is-on {
  background: var(--track-600);
  border-color: var(--track-600);
  color: var(--ink-950);
  font-weight: 700;
}

.page-news .news-side__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-300);
}

.page-news .news-stream {
  min-width: 0;
  border-top: 1px solid var(--ink-700);
}

.page-news .news-stream__title {
  margin: 0;
  padding: 18px 0 4px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-news .note {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: clamp(20px, 3vw, 28px) 0;
  border-bottom: 1px solid var(--ink-700);
}

.page-news .note::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 0;
  height: 2px;
  background: var(--flare-500);
  transform: translateY(-50%);
  transition: width 0.26s ease;
}

.page-news .note:hover::after {
  width: 26px;
}

.page-news .note__index {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
  opacity: 0.85;
}

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

.page-news .note__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 8px;
}

.page-news .tag {
  display: inline-block;
  padding: 3px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid currentColor;
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.5;
}

.page-news .tag--observe {
  color: var(--track-400);
}

.page-news .tag--version {
  color: var(--cyan-400);
}

.page-news .tag--method {
  color: var(--text-100);
  background: var(--ink-850);
  border-color: var(--ink-700);
}

.page-news .tag--term {
  color: var(--text-300);
}

.page-news .note__when,
.page-news .note__read {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-300);
}

.page-news .note__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.4vw, 20px);
  line-height: 1.42;
  font-weight: 700;
}

.page-news .note__summary {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-300);
}

.page-news .note__rule {
  display: block;
  width: 44px;
  height: 1px;
  margin: 12px 0 10px;
  background: var(--track-600);
  opacity: 0.6;
}

.page-news .note__extra {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-300);
  opacity: 0.86;
}

/* ---------- 专栏区块 ---------- */
.page-news .news-block {
  margin-top: clamp(48px, 8vw, 92px);
}

.page-news .news-block__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
}

.page-news .news-block__figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--ink-850);
}

.page-news .news-block__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-news .news-block__caption {
  display: block;
  padding: 10px 14px 12px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--text-300);
  border-top: 1px solid var(--ink-700);
}

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

.page-news .news-block__title {
  margin: 8px 0 14px;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.01em;
  max-width: 18ch;
}

.page-news .news-block__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-300);
}

.page-news .news-block__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-news .news-block__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-100);
}

.page-news .news-block__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 2px;
  background: var(--track-600);
}

.page-news .news-block__head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-news .news-block__aside {
  margin-top: 20px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--ink-850);
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--track-600);
}

.page-news .news-block__aside-title {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--track-400);
}

.page-news .news-block__aside .news-block__text {
  margin: 0;
  font-size: 14px;
}

/* 版本归档 */
.page-news .news-block--version {
  background: var(--ink-850);
  padding: clamp(26px, 4vw, 48px) 0;
  clip-path: polygon(0 18px, 100% 0, 100% 100%, 0 100%);
}

.page-news .news-block--version .news-block__head .news-block__text {
  max-width: 58ch;
}

.page-news .ver-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-news .ver-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--ink-700);
}

.page-news .ver-item:last-child {
  border-bottom: 1px solid var(--ink-700);
}

.page-news .ver-item__tag {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
}

.page-news .ver-item__title {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.4;
  font-weight: 700;
}

.page-news .ver-item__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-300);
}

.page-news .news-block__figure--panel img {
  aspect-ratio: 10 / 7;
}

/* 术语面板 */
.page-news .terms-panel {
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--ink-700);
}

.page-news .terms-panel__head {
  margin-bottom: 18px;
}

.page-news .terms-panel__title {
  margin: 8px 0 0;
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.25;
  font-weight: 900;
}

.page-news .terms-panel__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-news .terms-card {
  padding: 18px;
  border-radius: var(--radius-md);
  background: var(--ink-850);
  border: 1px solid var(--ink-700);
  min-width: 0;
  transition: border-color 0.22s ease;
}

.page-news .terms-card:hover {
  border-color: var(--track-400);
}

.page-news .terms-card__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--track-400);
  margin-bottom: 6px;
}

.page-news .terms-card__title {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.4;
  font-weight: 700;
}

.page-news .terms-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-300);
}

/* ---------- 订阅 ---------- */
.page-news .news-sub {
  margin-top: clamp(48px, 8vw, 92px);
}

.page-news .news-sub__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--ink-700);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(15, 163, 107, 0.18) 0%, rgba(15, 163, 107, 0) 58%),
    var(--ink-850);
}

.page-news .news-sub__title {
  margin: 8px 0 14px;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.22;
  font-weight: 900;
  max-width: 20ch;
}

.page-news .news-sub__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-300);
}

.page-news .news-sub__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: flex-start;
}

.page-news .news-sub__note {
  flex: 1 0 100%;
  margin: 6px 0 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-300);
  word-break: break-all;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-news .note {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 18px;
  }

  .page-news .terms-panel__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-news .news-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .news-block__grid--media {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-news .news-block__grid--split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-news .news-block--observe .news-block__figure {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
  }

  .page-news .terms-panel__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .news-sub__panel {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-news .news-index__grid {
    grid-template-columns: 216px minmax(0, 1fr);
    align-items: start;
  }

  .page-news .news-side {
    position: sticky;
    top: calc(var(--bar-h) + 26px);
    align-self: start;
  }

  .page-news .news-side__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 6px;
  }

  .page-news .news-side__link {
    width: 100%;
  }

  .page-news .ver-item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 18px;
  }
}

@media (min-width: 1100px) {
  .page-news .feature-card {
    flex: 0 0 300px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .feature-card,
  .page-news .news-side__link,
  .page-news .terms-card,
  .page-news .note::after {
    transition: none;
  }

  .page-news .feature-card:hover,
  .page-news .feature-card:focus-within {
    transform: none;
  }
}