.page-news {
  --news-rail-w: 196px;
  --news-gap: 32px;
  background: var(--mist);
  color: var(--ink);
  overflow-x: hidden;
}

.page-news .news-hero {
  padding: 22px 0 34px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(23, 176, 196, .16) 0%, transparent 58%),
    linear-gradient(180deg, var(--paper) 0%, var(--mist) 100%);
  border-bottom: var(--frame) solid var(--deep);
}

.page-news .news-hero__frame {
  position: relative;
  margin-top: 18px;
  padding: 30px 18px 26px;
  border: var(--frame) solid var(--deep);
  background: var(--paper);
  box-shadow: var(--shadow-hard);
}

.page-news .news-hero__tickline {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--peacock) 0 3px, transparent 3px 16px);
  border-bottom: 1px solid var(--line);
  opacity: .75;
}

.page-news .news-hero__kicker {
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--peacock);
  margin: 0 0 12px;
}

.page-news .news-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 7vw, 3.05rem);
  line-height: 1.16;
  letter-spacing: -.02em;
  margin: 0 0 16px;
  max-width: 20ch;
}

.page-news .news-lead {
  margin: 0 0 20px;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.page-news .news-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-news .news-hero__stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-news .news-hero__num {
  font-size: 1.05rem;
  color: var(--deep);
  order: 2;
}

.page-news .news-hero__cap {
  font-size: .85rem;
  color: var(--ink-soft);
  order: 1;
}

.page-news .news-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding-bottom: 8px;
}

.page-news .news-rail {
  background: var(--deep);
  color: var(--paper);
  padding: 16px 0 14px;
  margin: 0 -20px;
  border-bottom: 2px solid var(--deep);
}

.page-news .news-rail__title {
  margin: 0 0 10px;
  padding: 0 20px;
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-news .news-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 20px 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-news .news-rail__item {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid rgba(247, 248, 248, .26);
  font-size: .78rem;
  white-space: nowrap;
}

.page-news .news-rail__item.is-current {
  border-color: var(--cyan);
  background: rgba(23, 176, 196, .18);
  color: var(--paper);
}

.page-news .news-rail__no {
  font-size: .76rem;
  color: var(--cyan);
}

.page-news .news-rail__foot {
  margin: 10px 0 0;
  padding: 0 20px;
  font-size: .68rem;
  letter-spacing: .08em;
  color: rgba(247, 248, 248, .6);
}

.page-news .news-flow {
  min-width: 0;
  padding-top: 30px;
}

.page-news .section {
  padding-bottom: 42px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--line);
}

.page-news .section--last {
  border-bottom: 0;
  padding-bottom: 24px;
}

.page-news .section__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.015em;
  font-size: clamp(1.32rem, 4.6vw, 1.92rem);
  line-height: 1.25;
  margin: 0 0 10px;
  max-width: 24ch;
}

.page-news .section__note {
  margin: 0 0 22px;
  max-width: 60ch;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--ink-soft);
  border-left: 3px solid var(--cyan);
  padding-left: 12px;
}

/* 批次封面 */
.page-news .news-cover {
  border: var(--frame) solid var(--deep);
  background: var(--paper);
  box-shadow: var(--shadow-hard-sm);
  margin-bottom: 24px;
}

.page-news .news-cover img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-news .news-cover__cap {
  margin: 0;
  padding: 9px 13px;
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  background: var(--paper-dim);
}

/* 筛选条 */
.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 0 18px;
}

.page-news .filter-bar__label {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--ink-soft);
  margin-right: 4px;
}

.page-news .filter-btn {
  appearance: none;
  border: 1px solid var(--deep);
  background: var(--paper);
  color: var(--deep);
  font-family: var(--font-body);
  font-size: .82rem;
  padding: 7px 13px;
  cursor: pointer;
  transition: transform 180ms var(--ease), background-color 180ms var(--ease), color 180ms var(--ease);
}

.page-news .filter-btn:hover {
  transform: translate(-2px, -2px);
}

.page-news .filter-btn.is-active {
  background: var(--peacock);
  border-color: var(--peacock);
  color: var(--paper);
}

/* 更新流列表 */
.page-news .news-list {
  display: grid;
  gap: 0;
  border-top: 2px solid var(--deep);
}

.page-news .news-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 20px 14px 22px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  transition: background-color 180ms var(--ease);
}

.page-news .news-item.is-hidden {
  display: none;
}

.page-news .news-item--cool {
  background: linear-gradient(100deg, rgba(23, 176, 196, .13) 0%, var(--paper) 62%);
}

.page-news .news-item--warm {
  background: linear-gradient(100deg, rgba(216, 166, 60, .18) 0%, var(--paper) 62%);
}

.page-news .news-item__no {
  font-size: .8rem;
  letter-spacing: .07em;
  color: var(--peacock);
}

.page-news .news-item--warm .news-item__no {
  color: var(--ochre);
}

.page-news .news-item__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.06rem;
  line-height: 1.45;
  letter-spacing: -.01em;
  margin: 0 0 8px;
}

.page-news .news-item__meta {
  margin: 0 0 8px;
  font-size: .74rem;
  letter-spacing: .05em;
  color: var(--ink-soft);
}

.page-news .news-item__tags {
  margin: 0 0 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-news .news-item__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  padding: 3px 8px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
}

.page-news .news-item__tag--cool {
  border-color: var(--peacock);
  color: var(--peacock);
}

.page-news .news-item__tag--warm {
  border-color: var(--ochre);
  color: var(--ochre);
}

.page-news .news-item__summary {
  margin: 0 0 10px;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--ink);
}

.page-news .news-item__more summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .05em;
  color: var(--ochre);
  list-style: none;
}

.page-news .news-item__more summary::-webkit-details-marker {
  display: none;
}

.page-news .news-item__more summary::before {
  content: "＋ ";
  color: var(--peacock);
}

.page-news .news-item__more[open] summary::before {
  content: "－ ";
}

.page-news .news-item__more p {
  margin: 12px 0 0;
  padding: 12px 14px;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--ink-soft);
  background: var(--paper-dim);
  border-left: 3px solid var(--cyan);
}

/* 版本对照 */
.page-news .versions-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.page-news .versions-figure,
.page-news .archive-figure,
.page-news .region-figure {
  border: var(--frame) solid var(--deep);
  background: var(--paper);
  box-shadow: var(--shadow-hard-sm);
}

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

.page-news .versions-figure__cap,
.page-news .archive-figure__cap {
  margin: 0;
  padding: 8px 12px;
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  background: var(--paper-dim);
}

.page-news .diff-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-news .diff-col {
  padding: 16px 15px 18px;
  background: var(--paper);
  border: 2px solid var(--line);
}

.page-news .diff-col--new {
  border-color: var(--peacock);
  box-shadow: var(--shadow-hard-sm);
}

.page-news .diff-col--old {
  border-color: var(--gold);
}

.page-news .diff-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.page-news .diff-item {
  font-size: .9rem;
  line-height: 1.7;
  color: var(--ink-soft);
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.page-news .diff-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-news .diff-item__k {
  display: inline-block;
  min-width: 3.4em;
  margin-right: 8px;
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--peacock);
}

.page-news .diff-col--old .diff-item__k {
  color: var(--ochre);
}

.page-news .versions-note {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 16px 18px;
  background: var(--deep);
  color: var(--paper);
  border-left: 6px solid var(--cyan);
}

.page-news .versions-note p {
  margin: 0;
  flex: 1 1 240px;
  font-size: .92rem;
  line-height: 1.75;
  color: rgba(247, 248, 248, .92);
}

/* 旧版归档 */
.page-news .archive-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-news .archive-tree {
  display: grid;
  gap: 10px;
}

.page-news .archive-group {
  border: 2px solid var(--line);
  background: var(--paper);
}

.page-news .archive-group[open] {
  border-color: var(--ochre);
  box-shadow: var(--shadow-hard-sm);
}

.page-news .archive-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 13px 14px;
  cursor: pointer;
  list-style: none;
  border-bottom: 1px solid transparent;
}

.page-news .archive-group[open] .archive-group__head {
  border-bottom-color: var(--line);
}

.page-news .archive-group__head::-webkit-details-marker {
  display: none;
}

.page-news .archive-group__no {
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--deep);
  padding: 2px 8px;
  border: 1px solid var(--deep);
}

.page-news .archive-group__name {
  flex: 1 1 140px;
  font-size: .95rem;
  font-weight: 500;
}

.page-news .archive-list {
  margin: 0;
  padding: 6px 14px 14px;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-news .archive-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
}

.page-news .archive-entry:last-child {
  border-bottom: 0;
}

.page-news .archive-entry__no {
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--ochre);
}

.page-news .archive-entry__txt {
  font-size: .89rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* 区域动态 */
.page-news .region-figure {
  margin-bottom: 18px;
}

.page-news .region-figure img {
  aspect-ratio: 11 / 7;
}

.page-news .region-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-news .region-card {
  padding: 16px 15px 18px;
  background: var(--paper);
  border: 2px solid var(--deep);
  position: relative;
}

.page-news .region-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--gold) 100%);
}

.page-news .region-card__name {
  margin: 6px 0 6px;
  font-size: .82rem;
  letter-spacing: .12em;
  color: var(--peacock);
}

.page-news .region-card__area {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--ink-soft);
}

.page-news .region-card__body {
  margin: 0;
  font-size: .91rem;
  line-height: 1.75;
  color: var(--ink);
}

/* 反馈摘要 */
.page-news .feedback-list {
  display: grid;
  gap: 0;
  border-top: 2px solid var(--deep);
}

.page-news .feedback-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 14px 18px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-news .feedback-row:nth-child(even) {
  background: var(--paper-dim);
}

.page-news .feedback-row__q {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: .98rem;
  line-height: 1.5;
}

.page-news .feedback-row__a {
  margin: 0;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-news .feedback-row__s {
  justify-self: start;
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--paper);
  background: var(--ochre);
  padding: 3px 9px;
}

/* 订阅 */
.page-news .subscribe-box {
  display: grid;
  gap: 20px;
  padding: 22px 18px 24px;
  background: var(--deep);
  color: var(--paper);
  border: var(--frame) solid var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-news .subscribe-box__lead {
  margin: 0 0 16px;
  font-size: .97rem;
  line-height: 1.78;
  color: rgba(247, 248, 248, .94);
}

.page-news .subscribe-box .ledger__row {
  border-bottom: 1px solid rgba(247, 248, 248, .22);
}

.page-news .subscribe-box .ledger__key {
  color: rgba(247, 248, 248, .7);
}

.page-news .subscribe-box .ledger__val {
  color: var(--paper);
}

.page-news .subscribe-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  counter-reset: none;
}

.page-news .subscribe-step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  font-size: .9rem;
  line-height: 1.6;
  color: rgba(247, 248, 248, .94);
}

.page-news .subscribe-step__no {
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--deep);
  background: var(--cyan);
  padding: 2px 7px;
}

.page-news .subscribe-step__no-sep {
  height: 1px;
  background: repeating-linear-gradient(90deg, rgba(247, 248, 248, .5) 0 4px, transparent 4px 10px);
}

.page-news .subscribe-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news .subscribe-box .btn--ghost {
  color: var(--paper);
  border-color: rgba(247, 248, 248, .6);
}

.page-news .news-tail-link {
  margin: 20px 0 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-news .news-tail-link a {
  color: var(--peacock);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 平板 */
@media (min-width: 640px) {
  .page-news .news-hero__frame {
    padding: 38px 30px 30px;
  }

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

  .page-news .news-hero__stat {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 12px 14px 12px 0;
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .page-news .news-hero__stat:last-child {
    border-right: 0;
  }

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

  .page-news .news-hero__cap {
    order: 2;
  }

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

  .page-news .feedback-row {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr) auto;
    align-items: baseline;
    gap: 14px;
  }

  .page-news .feedback-row__s {
    justify-self: end;
  }

  .page-news .archive-entry {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: 0 14px;
    align-items: baseline;
  }
}

/* 桌面：左侧版本刻度 + 右侧更新流 */
@media (min-width: 960px) {
  .page-news .news-shell {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    gap: var(--news-gap);
    align-items: start;
    padding-top: 34px;
  }

  .page-news .news-rail {
    position: sticky;
    top: calc(var(--strip-h) + 18px);
    margin: 0;
    padding: 16px 14px 14px;
    background: transparent;
    color: var(--ink);
    border: var(--frame) solid var(--deep);
    box-shadow: var(--shadow-hard-sm);
  }

  .page-news .news-rail__title {
    padding: 0;
    color: var(--peacock);
  }

  .page-news .news-rail__list {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: visible;
  }

  .page-news .news-rail__item {
    border: 0;
    border-top: 1px solid var(--line);
    padding: 9px 0;
    white-space: normal;
    color: var(--ink-soft);
  }

  .page-news .news-rail__item.is-current {
    background: transparent;
    border-top: 1px solid var(--peacock);
    color: var(--deep);
    font-weight: 500;
  }

  .page-news .news-rail__no {
    color: var(--peacock);
    min-width: 3.2em;
  }

  .page-news .news-rail__foot {
    padding: 10px 0 0;
    color: var(--ink-soft);
    border-top: 1px solid var(--line);
  }

  .page-news .news-flow {
    padding-top: 0;
  }

  .page-news .news-item {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 0 20px;
    padding: 22px 18px 24px;
  }

  .page-news .news-item__no {
    padding-top: 4px;
  }

  .page-news .versions-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: 24px;
  }

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

  .page-news .archive-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: 24px;
  }

  .page-news .region-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .subscribe-box {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 26px;
    padding: 30px 28px 32px;
  }

  .page-news .subscribe-box__main {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-news .subscribe-steps {
    grid-column: 2;
    grid-row: 1;
  }

  .page-news .subscribe-actions {
    grid-column: 2;
    grid-row: 2;
    align-self: start;
  }
}

@media (min-width: 1200px) {
  .page-news .news-hero__frame {
    padding: 44px 46px 34px;
  }

  .page-news .news-item {
    padding: 26px 24px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .filter-btn {
    transition: none;
  }
}
</main>