.page-news {
  --news-gap: clamp(20px, 3vw, 34px);
  padding-block: clamp(18px, 4vw, 40px) clamp(56px, 9vw, 104px);
  background:
    radial-gradient(120% 70% at 88% -12%, rgba(55, 230, 208, 0.10), transparent 62%),
    radial-gradient(90% 60% at -8% 100%, rgba(242, 184, 75, 0.06), transparent 66%);
}

/* 刊头式页面标题 */
.page-news .news-masthead {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 42px) 0 clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-masthead__wm {
  position: absolute;
  right: -0.04em;
  top: -0.26em;
  font-family: var(--font-mono);
  font-size: clamp(140px, 26vw, 300px);
  line-height: 0.8;
  letter-spacing: -0.03em;
  color: rgba(55, 230, 208, 0.09);
  pointer-events: none;
  user-select: none;
}

.page-news .news-masthead__title {
  position: relative;
  margin: 0.55rem 0 0;
  max-width: 20ch;
  font-family: var(--font-head);
  font-size: clamp(29px, 5.4vw, 56px);
  line-height: 1.14;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-news .news-masthead__lead {
  position: relative;
  max-width: 62ch;
  margin: 1.05rem 0 0;
  color: var(--slate);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

/* 本期速览卡 */
.page-news .version-card {
  position: relative;
  overflow: hidden;
  margin-top: var(--news-gap);
  border: 1px solid var(--cyan);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(55, 230, 208, 0.16), rgba(7, 20, 38, 0.94) 58%);
  box-shadow: 0 24px 60px -40px rgba(55, 230, 208, 0.55);
}

.page-news .version-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.26;
  filter: saturate(0.85);
}

.page-news .version-card__body {
  position: relative;
  display: grid;
  gap: 12px;
  padding: clamp(20px, 3.4vw, 40px);
}

.page-news .version-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(23px, 3.6vw, 36px);
  line-height: 1.2;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-news .version-card__text {
  margin: 0;
  max-width: 58ch;
  color: var(--mist);
  opacity: 0.86;
  font-size: 15px;
  line-height: 1.85;
}

.page-news .version-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 14px;
  margin: 8px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}

.page-news .version-stats dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--slate);
}

.page-news .version-stats dd {
  margin: 6px 0 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: 0.04em;
  color: var(--mist);
  line-height: 1.1;
}

.page-news .version-stats dd span {
  margin-left: 5px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

/* 三栏骨架：期号栏 / 主列表 / 注释 */
.page-news .news-body {
  display: grid;
  gap: var(--news-gap);
  margin-top: clamp(30px, 5vw, 58px);
}

.page-news .news-rail {
  display: grid;
  gap: 12px;
  align-content: start;
  padding-top: 14px;
  border-top: 2px solid var(--cyan);
}

.page-news .news-rail__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--amber);
}

.page-news .news-rail__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(36px, 6vw, 54px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-news .news-rail__list {
  display: grid;
  gap: 7px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-rail__item {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 13px;
  color: var(--slate);
}

.page-news .news-rail__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sage);
}

.page-news .news-main {
  display: grid;
  gap: clamp(28px, 4vw, 46px);
  min-width: 0;
}

.page-news .news-block {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-news .news-block__title {
  margin: 0;
  padding-left: 12px;
  border-left: 3px solid var(--cyan);
  font-family: var(--font-head);
  font-size: clamp(20px, 3vw, 27px);
  line-height: 1.3;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-news .news-block__text {
  margin: 0;
  max-width: 62ch;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.85;
}

/* 主题筛选 */
.page-news .filter-figure {
  margin: 4px 0 0;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.page-news .filter-figure img {
  display: block;
  width: 100%;
  height: clamp(120px, 22vw, 168px);
  object-fit: cover;
  opacity: 0.82;
}

.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 2px;
}

.page-news .filter-btn {
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--slate);
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease),
    background-color 0.25s var(--ease);
}

.page-news .filter-btn:hover {
  color: var(--mist);
  border-color: var(--cyan);
}

.page-news .filter-btn[aria-pressed="true"] {
  border-color: var(--amber);
  background: rgba(242, 184, 75, 0.14);
  color: var(--amber-soft);
}

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

/* 条目列表 */
.page-news .news-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.page-news .entry {
  display: grid;
  gap: 9px;
  padding: 18px 4px 18px 14px;
  border-bottom: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-news .entry:hover,
.page-news .entry:focus-within {
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(55, 230, 208, 0.07), transparent 72%);
}

.page-news .entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-news .entry__time {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-news .entry__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(17px, 2.4vw, 21px);
  line-height: 1.45;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.page-news .entry__text {
  margin: 0;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.8;
}

.page-news .entry__more {
  margin-top: 2px;
  padding-top: 9px;
  border-top: 1px dashed var(--line-soft);
}

.page-news .entry__more summary {
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

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

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

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

.page-news .entry__more summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .entry__more p {
  margin: 8px 0 0;
  color: var(--slate);
  font-size: 14px;
  line-height: 1.8;
}

/* 右侧注释 */
.page-news .news-aside {
  display: grid;
  gap: 16px;
  align-content: start;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

.page-news .news-aside__fig {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.page-news .news-aside__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 9;
  object-fit: cover;
  opacity: 0.88;
}

.page-news .news-aside__note {
  display: grid;
  gap: 8px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--glass);
  border: 1px solid var(--line-soft);
}

.page-news .news-aside__text {
  margin: 0;
  color: var(--mist);
  opacity: 0.82;
  font-size: 14px;
  line-height: 1.85;
}

.page-news .news-aside__sign {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

/* 版本归档 */
.page-news .archive {
  margin-top: clamp(40px, 6vw, 76px);
  padding-top: clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--line);
}

.page-news .archive-fig {
  margin: 4px 0 6px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.page-news .archive-fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .archive-list {
  display: grid;
  border-top: 1px solid var(--line-soft);
}

.page-news .archive-item {
  border-bottom: 1px solid var(--line-soft);
}

.page-news .archive-item summary {
  display: grid;
  grid-template-columns: 2.2em 1fr;
  gap: 4px 12px;
  align-items: baseline;
  padding: 14px 4px;
  list-style: none;
  cursor: pointer;
}

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

.page-news .archive-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-news .archive-item__num {
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-news .archive-item__title {
  font-family: var(--font-head);
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.5;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.page-news .archive-item__tag {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--sage);
}

.page-news .archive-item[open] .archive-item__tag {
  color: var(--cyan-deep);
}

.page-news .archive-item__body {
  margin: 0 0 14px;
  padding-left: calc(2.2em + 12px);
  color: var(--slate);
  font-size: 14px;
  line-height: 1.85;
}

/* 下一步 */
.page-news .next {
  margin-top: clamp(34px, 5vw, 64px);
}

.page-news .next-grid {
  display: grid;
  gap: 12px;
}

.page-news .next-card {
  display: grid;
  gap: 6px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-700);
  text-decoration: none;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease),
    background-color 0.3s var(--ease);
}

.page-news .next-card:hover,
.page-news .next-card:focus-visible {
  border-color: var(--cyan);
  background: linear-gradient(150deg, rgba(55, 230, 208, 0.12), var(--ink-700) 70%);
  transform: translateY(-2px);
}

.page-news .next-card:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .next-card__kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-news .next-card__title {
  font-family: var(--font-head);
  font-size: 19px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-news .next-card__text {
  color: var(--slate);
  font-size: 14px;
  line-height: 1.75;
}

/* 桌面：三栏 2 : 7 : 3 */
@media (min-width: 960px) {
  .page-news .news-body {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 5.6fr) minmax(0, 2.4fr);
    gap: clamp(24px, 3vw, 44px);
  }

  .page-news .news-rail,
  .page-news .news-aside {
    position: sticky;
    top: 26px;
    align-self: start;
  }

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

  .page-news .archive-item summary {
    grid-template-columns: 2.6em 1fr auto;
    align-items: center;
  }

  .page-news .archive-item__tag {
    grid-column: auto;
    font-size: 11px;
  }

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

@media (min-width: 720px) and (max-width: 959px) {
  .page-news .news-body {
    grid-template-columns: minmax(0, 4fr) minmax(0, 3fr);
  }

  .page-news .news-rail {
    grid-column: 1 / -1;
    grid-template-columns: auto auto 1fr;
    align-items: center;
    gap: 16px;
  }

  .page-news .news-rail__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    margin: 0;
  }

  .page-news .news-rail__item {
    flex-direction: column;
    gap: 2px;
    border-bottom: none;
    padding-bottom: 0;
  }

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

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

  .page-news .next-card:hover {
    transform: none;
  }
}