.page-news {
  --news-dash: rgba(241, 238, 227, 0.2);
  --news-body-text: rgba(241, 238, 227, 0.76);
  background: var(--carbon);
  color: var(--chalk);
  overflow-x: hidden;
}

.page-news .news-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* 页首 */
.page-news .news-mast {
  padding-top: 24px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-mast__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 8.4vw, 4.5rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  max-width: 16ch;
  text-wrap: balance;
}

.page-news .news-mast__lead {
  margin: 22px 0 0;
  max-width: 36em;
  color: var(--news-body-text);
  line-height: 1.7;
  font-size: 1rem;
}

.page-news .news-mast__meta {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-news .news-meta {
  background: var(--carbon);
  padding: 12px 10px;
  min-width: 0;
}

.page-news .news-meta__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--mist);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-news .news-meta__v {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.88rem;
  color: var(--lime);
  letter-spacing: 0.02em;
}

/* 置顶导读 */
.page-news .news-pin {
  padding-block: 40px;
  border-bottom: 1px solid var(--line-soft);
  display: grid;
  gap: 28px;
}

.page-news .news-pin__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 5vw, 2.4rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-news .news-pin__text {
  margin: 16px 0 0;
  max-width: 34em;
  color: var(--news-body-text);
  line-height: 1.7;
}

.page-news .news-pin__copy .bb-btn {
  margin-top: 24px;
}

.page-news .news-pin__fig {
  margin: 0;
  position: relative;
}

.page-news .news-pin__fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-deep);
  background: var(--ink);
}

.page-news .news-pin__fig::after {
  content: "";
  position: absolute;
  right: -6px;
  bottom: -6px;
  width: 64px;
  height: 64px;
  border-right: 3px solid var(--lime);
  border-bottom: 3px solid var(--lime);
  pointer-events: none;
}

.page-news .news-pin__fig .bb-figure__cap {
  margin-top: 10px;
}

/* 主体双栏 */
.page-news .news-body {
  display: grid;
  gap: 40px;
  padding-block: 48px 16px;
}

.page-news .news-side__inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .news-filter__btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 2px solid var(--line-soft);
  color: var(--chalk);
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.06em;
  line-height: 1.2;
  cursor: pointer;
  background: transparent;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-news .news-filter__btn:hover {
  border-color: var(--lime);
}

.page-news .news-filter__count {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--mist);
}

.page-news .news-side__links {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}

.page-news .news-side__links a {
  color: var(--chalk);
  text-decoration: none;
  font-size: 13px;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-news .news-side__links a:hover {
  color: var(--lime);
  border-color: var(--lime);
}

/* 筛选：纯 CSS 单选 */
.page-news #cat-version:checked ~ .news-main .news-item:not([data-cat="version"]),
.page-news #cat-series:checked ~ .news-main .news-item:not([data-cat="series"]),
.page-news #cat-column:checked ~ .news-main .news-item:not([data-cat="column"]),
.page-news #cat-review:checked ~ .news-main .news-item:not([data-cat="review"]) {
  display: none;
}

.page-news #cat-all:checked ~ .news-side .news-filter__btn[for="cat-all"],
.page-news #cat-version:checked ~ .news-side .news-filter__btn[for="cat-version"],
.page-news #cat-series:checked ~ .news-side .news-filter__btn[for="cat-series"],
.page-news #cat-column:checked ~ .news-side .news-filter__btn[for="cat-column"],
.page-news #cat-review:checked ~ .news-side .news-filter__btn[for="cat-review"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--carbon);
  font-weight: 600;
}

.page-news #cat-all:checked ~ .news-side .news-filter__btn[for="cat-all"] .news-filter__count,
.page-news #cat-version:checked ~ .news-side .news-filter__btn[for="cat-version"] .news-filter__count,
.page-news #cat-series:checked ~ .news-side .news-filter__btn[for="cat-series"] .news-filter__count,
.page-news #cat-column:checked ~ .news-side .news-filter__btn[for="cat-column"] .news-filter__count,
.page-news #cat-review:checked ~ .news-side .news-filter__btn[for="cat-review"] .news-filter__count {
  color: rgba(11, 15, 13, 0.66);
}

.page-news #cat-all:focus-visible ~ .news-side .news-filter__btn[for="cat-all"],
.page-news #cat-version:focus-visible ~ .news-side .news-filter__btn[for="cat-version"],
.page-news #cat-series:focus-visible ~ .news-side .news-filter__btn[for="cat-series"],
.page-news #cat-column:focus-visible ~ .news-side .news-filter__btn[for="cat-column"],
.page-news #cat-review:focus-visible ~ .news-side .news-filter__btn[for="cat-review"] {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* 列表 */
.page-news .news-listhead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line-strong);
}

.page-news .news-listhead__title {
  margin: 0;
}

.page-news .news-listhead__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
  white-space: nowrap;
}

.page-news .news-list {
  display: block;
}

.page-news .news-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px 14px;
  padding: 24px 0;
  border-bottom: 1px dashed var(--news-dash);
}

.page-news .news-item__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  padding-top: 4px;
  transition: color 0.2s var(--ease);
}

.page-news .news-item:hover .news-item__no {
  color: var(--lime);
}

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

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

.page-news .news-item__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 10px;
}

.page-news .news-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-left: 3px solid var(--mist);
  background: rgba(241, 238, 227, 0.07);
  font-size: 11px;
  letter-spacing: 0.12em;
  line-height: 1.5;
  color: var(--chalk);
}

.page-news .news-tag--mist {
  border-left-color: var(--mist);
  color: #b9cabf;
}

.page-news .news-tag--lime {
  border-left-color: var(--lime);
  color: var(--lime);
}

.page-news .news-tag--clay {
  border-left-color: var(--clay);
  color: #d79b80;
}

.page-news .news-tag--amber {
  border-left-color: var(--amber);
  color: var(--amber);
}

.page-news .news-item__time {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-news .news-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.1rem, 3.6vw, 1.35rem);
  line-height: 1.34;
  letter-spacing: -0.015em;
}

.page-news .news-item__title a {
  display: inline-block;
  color: var(--chalk);
  text-decoration: none;
  transition: transform 0.2s var(--ease), color 0.2s var(--ease);
}

.page-news .news-item__title a::after {
  content: "→";
  display: inline-block;
  margin-left: 0.45em;
  color: var(--lime);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-news .news-item__title a:hover,
.page-news .news-item__title a:focus-visible {
  color: var(--lime);
  transform: translateX(4px);
}

.page-news .news-item__title a:hover::after,
.page-news .news-item__title a:focus-visible::after {
  opacity: 1;
  transform: translateX(0);
}

.page-news .news-item__title a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}

.page-news .news-item__sum {
  margin: 10px 0 0;
  max-width: 40em;
  color: var(--news-body-text);
  font-size: 0.94rem;
  line-height: 1.7;
}

.page-news .news-item__fig {
  margin: 0;
}

.page-news .news-item__fig img,
.page-news .news-item__inline-fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--line-strong);
  background: var(--ink);
}

.page-news .news-item__inline-fig {
  margin: 18px 0 0;
  max-width: 460px;
}

.page-news .news-item__inline-fig .bb-figure__cap {
  margin-top: 8px;
}

/* 大条目 */
.page-news .news-item--feature {
  padding: 28px 0;
}

.page-news .news-item--feature .news-item__title {
  font-size: clamp(1.4rem, 5.2vw, 2.2rem);
  line-height: 1.16;
  letter-spacing: -0.025em;
}

.page-news .news-item--feature .news-item__sum {
  font-size: 1rem;
}

/* 作者区 */
.page-news .news-authors {
  padding-block: 56px;
  border-top: 1px solid var(--line-soft);
}

.page-news .news-authors__note {
  margin: 14px 0 0;
  max-width: 34em;
  color: var(--news-body-text);
  line-height: 1.7;
}

.page-news .news-authors__grid {
  display: grid;
  gap: 32px;
  margin-top: 32px;
}

.page-news .news-authors__fig {
  margin: 0;
}

.page-news .news-authors__fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-deep);
  background: var(--ink);
}

.page-news .news-authors__fig .bb-figure__cap {
  margin-top: 10px;
}

.page-news .news-authors__cards {
  display: grid;
  gap: 14px;
}

.page-news .news-author {
  border: 2px solid var(--line-soft);
  border-left: 4px solid var(--moss);
  background: var(--ink);
  padding: 18px 18px 20px;
  box-shadow: var(--shadow-hard);
}

.page-news .news-author--clay {
  border-left-color: var(--clay);
}

.page-news .news-author--lime {
  border-left-color: var(--lime);
}

.page-news .news-author--amber {
  border-left-color: var(--amber);
}

.page-news .news-author__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.page-news .news-author__num {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-news .news-author__desc {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--news-body-text);
}

/* 订阅与回溯 */
.page-news .news-sub {
  padding-block: 56px 80px;
  border-top: 1px solid var(--line-soft);
}

.page-news .news-sub__grid {
  display: grid;
  gap: 20px;
  margin-top: 28px;
}

.page-news .news-sub__col {
  padding: 22px;
  border: 2px solid var(--line-soft);
}

.page-news .news-sub__col--ink {
  background: var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-news .news-sub__text {
  margin: 14px 0 0;
  color: var(--news-body-text);
  line-height: 1.7;
  font-size: 0.94rem;
}

.page-news .news-sub__link {
  display: inline-block;
  margin-top: 18px;
  color: var(--lime);
  text-decoration: none;
  font-size: 0.92rem;
  border-bottom: 2px solid rgba(200, 241, 78, 0.4);
  padding-bottom: 2px;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-news .news-sub__link:hover {
  border-bottom-color: var(--lime);
}

.page-news .news-sub__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* 中等屏 */
@media (min-width: 768px) {
  .page-news .news-mast {
    padding-top: 32px;
    padding-bottom: 48px;
  }

  .page-news .news-meta {
    padding: 16px 18px;
  }

  .page-news .news-meta__v {
    font-size: 1.05rem;
  }

  .page-news .news-item {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 10px 22px;
    padding: 30px 0;
  }

  .page-news .news-item__no {
    font-size: 13px;
  }

  .page-news .news-item--feature {
    padding: 34px 0;
  }
}

/* 桌面：左栏吸顶 + 错位列表 */
@media (min-width: 960px) {
  .page-news .news-pin {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: center;
    gap: 56px;
    padding-block: 56px;
  }

  .page-news .news-body {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: 64px;
    padding-block: 64px 24px;
    align-items: start;
  }

  .page-news .news-side {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }

  .page-news .news-filter {
    flex-direction: column;
    gap: 6px;
  }

  .page-news .news-filter__btn {
    width: 100%;
    justify-content: space-between;
  }

  .page-news .news-side__links {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }

  .page-news .news-item {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 10px 26px;
    padding: 32px 0;
  }

  .page-news .news-item__no {
    font-size: 14px;
  }

  .page-news .news-item--feature {
    padding: 40px 0;
    border-bottom: 1px dashed var(--news-dash);
  }

  .page-news .news-item--media .news-item__inner {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 36px;
    align-items: center;
  }

  .page-news .news-item--media .news-item__fig img {
    box-shadow: var(--shadow-deep);
  }

  .page-news .news-authors {
    padding-block: 80px;
  }

  .page-news .news-authors__grid {
    grid-template-columns: minmax(0, 0.5fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-news .news-authors__cards {
    gap: 16px;
  }

  .page-news .news-sub {
    padding-block: 80px 104px;
  }

  .page-news .news-sub__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
  }

  .page-news .news-sub__col {
    padding: 28px;
  }
}

@media (min-width: 1200px) {
  .page-news .news-body {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 80px;
  }

  .page-news .news-item__sum {
    max-width: 44em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item__title a,
  .page-news .news-item__title a::after,
  .page-news .news-filter__btn,
  .page-news .news-item__no,
  .page-news .news-side__links a,
  .page-news .news-sub__link {
    transition: none;
  }

  .page-news .news-item__title a:hover,
  .page-news .news-item__title a:focus-visible {
    transform: none;
  }
}