.page-news {
  --news-tag-column: #8FD8FF;
  --news-tag-handbook: #FFC7E5;
  --news-dark-muted: #5C7180;
  color: var(--chalk-050);
  padding: 28px 0 96px;
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumbs {
  padding-top: 8px;
  margin-bottom: 24px;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 16px 0 32px;
}

.page-news .news-hero__title {
  font-size: clamp(36px, 9vw, 84px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--chalk-050);
  margin: 0;
}

.page-news .news-hero__lede {
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--chalk-050);
  opacity: 0.82;
  margin: 0;
}

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

.page-news .news-jump a {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--ink-600);
  background: var(--ink-800);
  color: var(--chalk-050);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease),
    background-color 0.24s var(--ease);
}

.page-news .news-jump a:hover,
.page-news .news-jump a:focus-visible {
  border-color: var(--turf-500);
  color: var(--turf-300);
  background: rgba(22, 193, 114, 0.08);
}

.page-news .news-jump a:first-child {
  border-color: var(--turf-500);
  color: var(--turf-300);
}

/* ---------- 首屏横幅图 ---------- */
.page-news .news-banner {
  margin: 12px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
}

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

.page-news .news-banner figcaption {
  padding: 12px 20px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mute-400);
}

/* ---------- 通用章节 ---------- */
.page-news .nsec {
  margin-top: 72px;
}

.page-news .nsec__head {
  max-width: 64ch;
  margin-bottom: 28px;
}

.page-news .nsec__title {
  font-size: clamp(24px, 5.4vw, 42px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--chalk-050);
  margin: 10px 0 12px;
}

.page-news .nsec__lede {
  font-size: 16px;
  line-height: 1.78;
  color: var(--chalk-050);
  opacity: 0.76;
  margin: 0;
}

.page-news .eyebrow {
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--turf-300);
  margin: 0;
}

.page-news .eyebrow--dark {
  color: var(--news-dark-muted);
}

/* ---------- 01 本期摘要 ---------- */
.page-news .sum-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .sum-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px dashed var(--ink-600);
}

.page-news .sum-row:first-child {
  border-top: 1px dashed var(--ink-600);
}

.page-news .sum-row__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--chalk-050);
  margin: 0 0 6px;
}

.page-news .sum-row__desc {
  font-size: 15px;
  line-height: 1.72;
  color: var(--mute-400);
  margin: 0;
}

.page-news .sum-row__time {
  flex: none;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal-500);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 122, 47, 0.35);
  background: rgba(255, 122, 47, 0.08);
}

/* ---------- 02 版本迭代 ---------- */
.page-news .ver-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-news .ver-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-news .ver-item:hover {
  border-color: var(--turf-500);
  transform: translateY(-2px);
}

.page-news .ver-item__no {
  flex: none;
  width: 62px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  font-weight: 700;
  color: var(--turf-300);
  padding-top: 3px;
}

.page-news .ver-item__body {
  min-width: 0;
  flex: 1 1 auto;
}

.page-news .ver-item__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--chalk-050);
  margin: 0 0 8px;
}

.page-news .ver-item__desc {
  font-size: 15px;
  line-height: 1.72;
  color: var(--chalk-050);
  opacity: 0.76;
  margin: 0 0 10px;
}

.page-news .ver-item__meta {
  font-size: 13px;
  line-height: 1.6;
  color: var(--signal-200);
  opacity: 0.82;
  margin: 0;
}

.page-news .news-figure {
  margin: 28px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
}

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

.page-news .news-figure figcaption {
  padding: 12px 20px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mute-400);
}

/* ---------- 03 设备归档 ---------- */
.page-news .dev-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-news .dev-card {
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
  border-left: 3px solid var(--turf-500);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  transition: background-color 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-news .dev-card:hover {
  background: var(--ink-600);
  border-left-color: var(--signal-500);
}

.page-news .dev-card__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--chalk-050);
  margin: 0 0 8px;
}

.page-news .dev-card__note {
  font-size: 15px;
  line-height: 1.72;
  color: var(--mute-400);
  margin: 0;
}

/* ---------- 04 记录手册（浅底） ---------- */
.page-news .nsec--chalk {
  background: var(--chalk-050);
  color: var(--chalk-900);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  margin-top: 80px;
}

.page-news .hbk {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-news .hbk__title {
  font-size: clamp(23px, 5vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--chalk-900);
  margin: 10px 0 12px;
}

.page-news .hbk__lede {
  font-size: 16px;
  line-height: 1.78;
  color: var(--news-dark-muted);
  margin: 0 0 20px;
}

.page-news .hbk__list {
  list-style: none;
  counter-reset: hbk;
  margin: 0;
  padding: 0;
}

.page-news .hbk__list li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid rgba(11, 26, 36, 0.12);
  font-size: 15px;
  line-height: 1.7;
  color: var(--chalk-900);
}

.page-news .hbk__list li:last-child {
  border-bottom: 1px solid rgba(11, 26, 36, 0.12);
}

.page-news .hbk__list .mono {
  flex: none;
  width: 74px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: #0C7A49;
  padding-top: 3px;
}

.page-news .hbk__figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #E3EBE7;
}

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

.page-news .hbk__figure figcaption {
  padding: 10px 16px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--news-dark-muted);
}

/* ---------- 05 更新节奏 ---------- */
.page-news .cad-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-news .cad-card {
  background: linear-gradient(160deg, var(--ink-800) 0%, var(--ink-950) 100%);
  border: 1px solid var(--ink-600);
  border-radius: var(--radius-md);
  padding: 22px 20px;
}

.page-news .cad-card__label {
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mute-400);
  margin: 0 0 10px;
}

.page-news .cad-card__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--turf-500);
  margin: 0 0 10px;
}

.page-news .cad-card__note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--chalk-050);
  opacity: 0.7;
  margin: 0;
}

/* ---------- 06 条目筛选 ---------- */
.page-news .tl-filter {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.page-news .tl-filter__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-news .tl-filter__label {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--ink-600);
  background: var(--ink-800);
  color: var(--mute-400);
  font-size: 14px;
  cursor: pointer;
  user-select: none;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease),
    background-color 0.22s var(--ease);
}

.page-news .tl-filter__label:hover {
  border-color: var(--turf-300);
  color: var(--turf-300);
}

.page-news .tl-filter__input:checked + .tl-filter__label {
  background: var(--turf-500);
  border-color: var(--turf-500);
  color: var(--ink-950);
  font-weight: 700;
}

.page-news .tl-filter__input:focus-visible + .tl-filter__label {
  outline: 2px solid var(--turf-300);
  outline-offset: 2px;
}

/* 前端筛选：不支持 :has 时全部条目保持可见 */
.page-news:has(#tf-version:checked) .tl-item:not(.tl-item--version) {
  display: none;
}

.page-news:has(#tf-device:checked) .tl-item:not(.tl-item--device) {
  display: none;
}

.page-news:has(#tf-column:checked) .tl-item:not(.tl-item--column) {
  display: none;
}

.page-news:has(#tf-handbook:checked) .tl-item:not(.tl-item--handbook) {
  display: none;
}

/* ---------- 时间线 ---------- */
.page-news .tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 32px;
}

.page-news .tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(
    180deg,
    var(--turf-500) 0%,
    var(--ink-600) 45%,
    rgba(29, 58, 76, 0.15) 100%
  );
}

.page-news .tl-item {
  position: relative;
}

.page-news .tl-item + .tl-item {
  margin-top: 20px;
}

.page-news .tl-item::before {
  content: "";
  position: absolute;
  z-index: 2;
  top: 22px;
  left: -31px;
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--ink-950);
  border: 2px solid var(--turf-500);
}

.page-news .tl-item--fresh::before {
  background: var(--signal-500);
  border-color: var(--signal-500);
  box-shadow: 0 0 0 4px rgba(255, 122, 47, 0.18);
}

.page-news .tl-item__card {
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-news .tl-item:hover .tl-item__card {
  border-color: var(--turf-500);
  transform: translateY(-2px);
}

.page-news .tl-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 0 0 12px;
}

.page-news .tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  border: 1px solid currentColor;
  font-size: 12px;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.page-news .tag--version {
  color: var(--turf-300);
}

.page-news .tag--device {
  color: var(--signal-200);
}

.page-news .tag--column {
  color: var(--news-tag-column);
}

.page-news .tag--handbook {
  color: var(--news-tag-handbook);
}

.page-news .tl-item__time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mute-400);
  transition: color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-news .tl-item:hover .tl-item__time {
  color: var(--signal-500);
  transform: translateX(2px);
}

.page-news .tl-item__title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--chalk-050);
  margin: 0 0 8px;
}

.page-news .tl-item__desc {
  font-size: 15px;
  line-height: 1.72;
  color: var(--chalk-050);
  opacity: 0.74;
  margin: 0 0 10px;
}

.page-news .tl-item__scope {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mute-400);
  margin: 0;
}

.page-news .tl-item--old .tl-item__card {
  opacity: 0.86;
}

.page-news .tl-item--older .tl-item__card {
  opacity: 0.7;
}

/* ---------- 底部通道 ---------- */
.page-news .nsec--tail {
  margin-top: 80px;
  border-top: 1px dashed var(--ink-600);
  padding-top: 40px;
}

.page-news .tail__title {
  font-size: clamp(22px, 4.6vw, 32px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--chalk-050);
  margin: 0 0 12px;
}

.page-news .tail__lede {
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--chalk-050);
  opacity: 0.76;
  margin: 0 0 24px;
}

.page-news .tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .nbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 26px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.22s var(--ease), background-color 0.22s var(--ease),
    border-color 0.22s var(--ease), color 0.22s var(--ease);
}

.page-news .nbtn:hover {
  transform: translateY(-2px);
}

.page-news .nbtn--cta {
  background: var(--signal-500);
  color: var(--ink-950);
}

.page-news .nbtn--cta:hover {
  background: var(--signal-200);
}

.page-news .nbtn--ghost {
  border-color: var(--ink-600);
  color: var(--chalk-050);
  background: transparent;
}

.page-news .nbtn--ghost:hover {
  border-color: var(--turf-500);
  color: var(--turf-300);
}

.page-news .nbtn:focus-visible {
  outline: 2px solid var(--turf-500);
  outline-offset: 3px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 700px) {
  .page-news .sum-row {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    gap: 28px;
  }

  .page-news .sum-row__main {
    min-width: 0;
    flex: 1 1 auto;
  }

  .page-news .sum-row__time {
    align-self: center;
  }

  .page-news .dev-grid,
  .page-news .cad-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-news .hbk {
    flex-direction: row;
    align-items: center;
    gap: 40px;
  }

  .page-news .hbk__text {
    flex: 1 1 58%;
    min-width: 0;
  }

  .page-news .hbk__figure {
    flex: 1 1 42%;
    min-width: 0;
  }

  .page-news .nsec--chalk {
    padding: 52px 40px;
  }

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

@media (min-width: 900px) {
  .page-news {
    padding-bottom: 140px;
  }

  .page-news .nsec {
    margin-top: 112px;
  }

  .page-news .nsec--tail {
    margin-top: 120px;
  }

  .page-news .news-hero {
    padding: 32px 0 40px;
  }

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

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

  .page-news .ver-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  /* 时间线中轴 + 左右交错 */
  .page-news .tl {
    padding-left: 0;
  }

  .page-news .tl::before {
    left: 50%;
    margin-left: -1px;
    top: 0;
    bottom: 0;
  }

  .page-news .tl-item {
    width: calc(50% - 40px);
  }

  .page-news .tl-item:nth-child(odd) {
    margin-right: auto;
  }

  .page-news .tl-item:nth-child(even) {
    margin-left: auto;
  }

  .page-news .tl-item::before {
    top: 26px;
  }

  .page-news .tl-item:nth-child(odd)::before {
    left: auto;
    right: -47px;
  }

  .page-news .tl-item:nth-child(even)::before {
    left: -47px;
    right: auto;
  }
}

/* ---------- 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .ver-item,
  .page-news .tl-item__card,
  .page-news .tl-item__time,
  .page-news .nbtn {
    transition: none;
  }

  .page-news .ver-item:hover,
  .page-news .tl-item:hover .tl-item__card,
  .page-news .nbtn:hover {
    transform: none;
  }
}