.page-news {
  --news-axis: 7rem;
  --news-gap: 1rem;
  color: var(--c-paper);
  background: var(--c-indigo);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding: 2.25rem 0 2.5rem;
  border-bottom: 2px solid var(--c-steel);
}

.page-news .news-hero__lead {
  margin-top: 1.25rem;
}

.page-news .news-hero__title {
  margin: 0.5rem 0 0;
  font-size: clamp(2.75rem, 13vw, 6rem);
  line-height: 0.94;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--c-paper);
}

.page-news .news-hero__lede {
  margin: 1.25rem 0 1.5rem;
  max-width: 42ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-paper-dim);
}

.page-news .news-hero__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem 1.25rem;
  margin: 0;
  padding-top: 1.25rem;
  border-top: 2px solid var(--c-steel);
}

.page-news .news-hero__meta div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.page-news .news-hero__meta dt {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  color: var(--c-gray);
}

.page-news .news-hero__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  letter-spacing: 0.05em;
  color: var(--c-lime);
}

@media (min-width: 900px) {
  .page-news .news-hero {
    padding: 3rem 0 3.25rem;
  }
  .page-news .news-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 3.5rem;
    align-items: end;
  }
  .page-news .news-hero__lead {
    margin-top: 1.75rem;
  }
  .page-news .news-hero__lede {
    margin-top: 0;
  }
  .page-news .news-hero__meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
  }
}

/* ---------- 章节骨架 ---------- */
.page-news .section {
  padding-block: 3rem;
}

.page-news .section + .section {
  border-top: 1px solid var(--c-steel);
}

.page-news .section-head {
  margin-bottom: 1.75rem;
}

.page-news .section-head__title {
  margin: 0.35rem 0 0.75rem;
  font-size: clamp(1.5rem, 4.6vw, 2.5rem);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-news .section-head__note {
  margin: 0;
  max-width: 62ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--c-gray);
}

.page-news .news-figure {
  margin: 0 0 1.75rem;
}

.page-news .news-figure .figure__media {
  border: 2px solid var(--c-steel);
  background: var(--c-charcoal);
}

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

.page-news .news-figure .figure__caption {
  margin-top: 0.6rem;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--c-gray);
}

/* ---------- 筛选器 ---------- */
.page-news .filter-bar {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1rem 0 1.15rem;
  border-top: 2px solid var(--c-steel);
  border-bottom: 2px solid var(--c-steel);
  margin-bottom: 2rem;
}

.page-news .filter-bar__group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}

.page-news .filter-bar__label {
  font-size: 0.625rem;
  letter-spacing: 0.22em;
  color: var(--c-gray);
  margin-right: 0.25rem;
}

.page-news .filter-chip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.75rem;
  background: transparent;
  color: var(--c-paper-dim);
  border: 1px solid var(--c-steel);
  border-radius: 999px;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-news .filter-chip:hover {
  border-color: var(--c-lime);
  color: var(--c-lime);
}

.page-news .filter-chip:focus-visible {
  outline: 2px solid var(--c-signal);
  outline-offset: 2px;
}

.page-news .filter-chip[aria-pressed="true"] {
  background: var(--c-lime);
  border-color: var(--c-lime);
  color: var(--c-indigo);
}

@media (min-width: 900px) {
  .page-news .filter-bar {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1.25rem 2.75rem;
  }
}

/* ---------- 时间线 ---------- */
.page-news .timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
}

.page-news .timeline__scale {
  display: none;
}

.page-news .timeline__stream {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.875rem;
}

.page-news .record {
  position: relative;
  background: var(--c-charcoal);
  border: 2px solid var(--c-steel);
  padding: 1.05rem 1.05rem 1.2rem;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-news .record:hover,
.page-news .record:focus-within {
  border-color: var(--c-lime);
  box-shadow: var(--shadow-soft);
  transform: translate(-2px, -2px);
}

.page-news .record__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem 0.75rem;
  padding-bottom: 0.6rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--c-steel);
}

.page-news .record__time {
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--c-paper-dim);
}

.page-news .record__badge {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  padding: 0.15rem 0.5rem;
  background: var(--c-indigo);
  border: 1px solid var(--c-cyan);
  color: var(--c-cyan);
}

.page-news .record__title {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-news .record__fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem 1rem;
  margin: 0;
}

.page-news .field {
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
  min-width: 0;
}

.page-news .field__key {
  font-size: 0.5625rem;
  letter-spacing: 0.22em;
  color: var(--c-gray);
}

.page-news .field__val {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--c-paper);
}

@media (min-width: 900px) {
  .page-news .timeline {
    grid-template-columns: var(--news-axis) minmax(0, 1fr);
    gap: 2.25rem;
  }
  .page-news .timeline__scale {
    display: block;
    position: relative;
    align-self: start;
    position: sticky;
    top: calc(var(--status-h) + 1.5rem);
    height: 20rem;
    padding-left: 0.85rem;
    border-left: 2px solid var(--c-steel);
  }
  .page-news .timeline__scale::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: -2px;
    width: 2px;
    background-image: repeating-linear-gradient(to bottom, var(--c-cyan) 0 2px, transparent 2px 16px);
    opacity: 0.65;
  }
  .page-news .timeline__scale-mark {
    display: block;
    writing-mode: vertical-rl;
    font-size: 0.625rem;
    letter-spacing: 0.3em;
    color: var(--c-gray);
    padding-top: 0.5rem;
    border-top: 2px solid var(--c-cyan);
  }
  .page-news .record::before {
    content: "";
    position: absolute;
    top: 1.55rem;
    left: -1.2rem;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: var(--c-cyan);
  }
  .page-news .record__fields {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 版本对照 ---------- */
.page-news .compare {
  display: grid;
  gap: 0.75rem;
}

.page-news .compare__head {
  display: none;
}

.page-news .compare__row {
  background: var(--c-charcoal);
  border: 2px solid var(--c-steel);
  padding: 0.95rem 1rem 1.05rem;
  transition: border-color var(--dur) var(--ease);
}

.page-news .compare__row:hover,
.page-news .compare__row:focus-within {
  border-color: var(--c-lime);
}

.page-news .compare__key {
  margin: 0 0 0.7rem;
  font-size: 0.625rem;
  letter-spacing: 0.22em;
  color: var(--c-signal);
}

.page-news .compare__pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
}

.page-news .compare__cell {
  margin: 0;
  padding-left: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.72;
}

.page-news .compare__cell--old {
  color: var(--c-gray);
  border-left: 2px solid var(--c-steel);
}

.page-news .compare__cell--new {
  color: var(--c-paper);
  border-left: 2px solid var(--c-cyan);
}

.page-news .compare__row:hover .compare__cell--old {
  color: var(--c-paper-dim);
}

@media (min-width: 760px) {
  .page-news .compare__head {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--c-steel);
  }
  .page-news .compare__col-title {
    font-size: 0.6875rem;
    letter-spacing: 0.22em;
    color: var(--c-gray);
  }
  .page-news .compare__col-title--new {
    color: var(--c-lime);
  }
  .page-news .compare__pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

/* ---------- 更新列表 ---------- */
.page-news .update-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--c-steel);
}

.page-news .update-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "tag time"
    "text text";
  gap: 0.5rem 1rem;
  align-items: center;
  padding: 0.9rem 0.25rem;
  border-bottom: 1px solid var(--c-steel);
  transition: background-color var(--dur) var(--ease);
}

.page-news .update-item:hover {
  background: rgba(198, 255, 61, 0.05);
}

.page-news .update-item__tag {
  grid-area: tag;
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  padding: 0.2rem 0.55rem;
  background: var(--c-gray);
  color: var(--c-indigo);
}

.page-news .update-item__text {
  grid-area: text;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-paper);
}

.page-news .update-item__time {
  grid-area: time;
  justify-self: end;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--c-gray);
  white-space: nowrap;
}

@media (min-width: 900px) {
  .page-news .update-item {
    grid-template-columns: 6rem minmax(0, 1fr) 8rem;
    grid-template-areas: "tag text time";
    gap: 0 1.5rem;
    padding: 1rem 0.5rem;
  }
}

/* ---------- 归档检索 ---------- */
.page-news .archive-grid {
  align-items: start;
}

.page-news .archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-news .archive-list__item {
  padding: 0.85rem 0 0.85rem 1rem;
  border-left: 2px solid var(--c-cyan);
  background: linear-gradient(90deg, rgba(53, 224, 208, 0.06), transparent 70%);
}

.page-news .archive-list__item--tip {
  border-left-color: var(--c-signal);
  background: linear-gradient(90deg, rgba(255, 106, 43, 0.08), transparent 70%);
}

.page-news .archive-list__key {
  margin: 0 0 0.3rem;
  font-size: 0.625rem;
  letter-spacing: 0.22em;
  color: var(--c-lime);
}

.page-news .archive-list__item--tip .archive-list__key {
  color: var(--c-signal);
}

.page-news .archive-list__val {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-paper-dim);
}

.page-news .span-5 .figure {
  margin: 1.25rem 0 0;
}

.page-news .span-5 .figure__media {
  border: 2px solid var(--c-steel);
  background: var(--c-charcoal);
}

.page-news .span-5 .figure__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .span-5 .figure__caption {
  margin-top: 0.6rem;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--c-gray);
}

@media (min-width: 960px) {
  .page-news .span-5 .figure {
    margin-top: 0;
  }
}

/* ---------- 跟进方式 ---------- */
.page-news .follow-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-news .follow-card {
  padding: 1.15rem 1.15rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.page-news .follow-card__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.24em;
  color: var(--c-gray);
}

.page-news .follow-card__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-news .follow-card__body {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-paper-dim);
}

.page-news .card--flag .follow-card__body {
  color: var(--c-paper);
}

.page-news .follow-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.65rem;
}

.page-news .follow-links {
  list-style: none;
  margin: 2rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--c-steel);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.6rem;
}

.page-news .follow-links .footer-link {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--c-paper-dim);
  text-decoration: none;
  border-bottom: 1px solid var(--c-steel);
  display: inline-block;
  padding-bottom: 0.15rem;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .follow-links .footer-link:hover {
  color: var(--c-lime);
  border-color: var(--c-lime);
}

.page-news .follow-links .footer-link:focus-visible {
  outline: 2px solid var(--c-signal);
  outline-offset: 3px;
}

@media (min-width: 760px) {
  .page-news .follow-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-news .follow-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem 2rem;
  }
}

@media (min-width: 1200px) {
  .page-news .follow-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}