.page-news {
  --news-violet: #7A3BFF;
  --news-cyan: #23E6D8;
  --news-panel: rgba(20, 10, 46, 0.6);
  position: relative;
  overflow-x: clip;
}

/* ---------- 面包屑与首屏 ---------- */

.page-news .breadcrumb {
  padding-top: clamp(94px, 13vw, 150px);
}

.page-news .breadcrumb a {
  color: var(--grey);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  color: var(--news-cyan);
}

.page-news .news-hero {
  position: relative;
  overflow: hidden;
  padding-bottom: clamp(40px, 6vw, 76px);
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: min(62vw, 520px);
  background: linear-gradient(135deg, rgba(122, 59, 255, 0.3) 0%, rgba(35, 230, 216, 0.12) 58%, rgba(5, 6, 11, 0) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 54%, 44% 100%, 0 82%);
  pointer-events: none;
  z-index: 0;
}

.page-news .news-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-news .news-hero__title {
  margin: 0;
  display: grid;
  gap: 8px;
}

.page-news .news-hero__zh {
  display: block;
  font-family: var(--font-cn);
  font-weight: 900;
  font-size: var(--fs-1);
  letter-spacing: -0.02em;
  line-height: 1.06;
  color: var(--white);
}

.page-news .news-hero__en {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(13px, 2.1vw, 21px);
  letter-spacing: 0.08em;
  line-height: 1.3;
  color: var(--news-cyan);
}

.page-news .news-hero__lede {
  max-width: 42ch;
  margin: 0;
}

.page-news .news-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  margin-top: 12px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-news .news-hero__stat {
  display: grid;
  gap: 4px;
}

.page-news .news-hero__stat-num {
  font-size: var(--fs-4);
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-news .news-hero__stat-label {
  font-size: var(--fs-6);
  letter-spacing: 0.14em;
  color: var(--grey);
}

/* ---------- 更新栏说明 ---------- */

.page-news .news-brief__grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-news .news-brief__list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-news .news-brief__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-news .news-brief__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-news .news-brief__idx {
  font-size: var(--fs-6);
  letter-spacing: 0.14em;
  color: var(--news-cyan);
  padding-top: 4px;
}

.page-news .news-brief__text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey);
}

.page-news .news-brief__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-news .news-brief__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

/* ---------- 条目列表带 ---------- */

.page-news .news-stream-band {
  position: relative;
  isolation: isolate;
}

.page-news .news-stream-band__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  opacity: 0.14;
  pointer-events: none;
}

.page-news .news-stream-band__bg img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.75);
}

.page-news .news-stream-band__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #05060b 0%, rgba(5, 6, 11, 0.42) 38%, #05060b 100%);
}

/* ---------- 专题横幅 ---------- */

.page-news .news-feature {
  display: grid;
  grid-template-columns: 1fr;
  margin: clamp(24px, 4vw, 36px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--hold);
  overflow: hidden;
}

.page-news .news-feature__media {
  position: relative;
  min-height: 132px;
}

.page-news .news-feature__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.85;
}

.page-news .news-feature__body {
  padding: 20px 22px;
  display: grid;
  gap: 8px;
  align-content: center;
}

.page-news .news-feature__kicker {
  font-size: var(--fs-6);
  letter-spacing: 0.14em;
  color: var(--amber);
  margin: 0;
}

.page-news .news-feature__title {
  margin: 0;
  font-family: var(--font-cn);
  font-size: var(--fs-4);
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-news .news-feature__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grey);
  max-width: 56ch;
}

/* ---------- 标签筛选 ---------- */

.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: clamp(24px, 4vw, 36px) 0;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

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

.page-news .news-filter__chip {
  cursor: pointer;
  user-select: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-news .news-filter__chip:hover {
  border-color: rgba(35, 230, 216, 0.5);
  color: var(--white);
}

.page-news .news-filter__box:checked + .news-filter__chip {
  border-color: var(--news-cyan);
  color: var(--news-cyan);
  background: rgba(35, 230, 216, 0.1);
  box-shadow: inset 0 0 0 1px rgba(35, 230, 216, 0.35);
}

.page-news .news-filter__box:focus-visible + .news-filter__chip {
  outline: 2px solid var(--news-cyan);
  outline-offset: 2px;
}

.page-news .news-filter__count {
  margin-left: auto;
  padding-left: 12px;
  font-size: var(--fs-6);
  letter-spacing: 0.14em;
  color: var(--grey);
  white-space: nowrap;
}

/* 纯 CSS 筛选：勾选任意标签后，隐藏不匹配的条目 */
.page-news .news-filter:has(.news-filter__box:checked) ~ .news-stream .news-item {
  display: none;
}

.page-news .news-filter:has(#nf-version:checked) ~ .news-stream .news-item[data-tags~="version"],
.page-news .news-filter:has(#nf-structure:checked) ~ .news-stream .news-item[data-tags~="structure"],
.page-news .news-filter:has(#nf-term:checked) ~ .news-stream .news-item[data-tags~="term"],
.page-news .news-filter:has(#nf-topic:checked) ~ .news-stream .news-item[data-tags~="topic"],
.page-news .news-filter:has(#nf-monthly:checked) ~ .news-stream .news-item[data-tags~="monthly"] {
  display: block;
}

/* ---------- 时间轴 ---------- */

.page-news .news-stream {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
}

.page-news .news-stream::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--news-violet) 0%, var(--news-cyan) 100%);
  opacity: 0.75;
}

.page-news .news-item {
  position: relative;
  display: block;
  padding-bottom: clamp(16px, 2.6vw, 26px);
}

.page-news .news-item__node {
  position: absolute;
  left: -28px;
  top: 26px;
  width: 9px;
  height: 9px;
  background: var(--news-cyan);
  box-shadow: 0 0 0 3px rgba(35, 230, 216, 0.12);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
  z-index: 1;
}

.page-news .news-item[data-tags~="version"] .news-item__node {
  background: var(--news-violet);
  box-shadow: 0 0 0 3px rgba(122, 59, 255, 0.14);
}

.page-news .news-item[data-tags~="monthly"] .news-item__node {
  background: var(--amber);
  box-shadow: 0 0 0 3px rgba(255, 138, 43, 0.14);
}

.page-news .news-item:hover .news-item__node {
  transform: scale(1.55);
  box-shadow: 0 0 0 5px rgba(35, 230, 216, 0.16);
}

.page-news .news-item__head {
  position: relative;
  display: grid;
  gap: 9px;
  width: 100%;
  padding: 17px 40px 17px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--news-panel);
  text-align: left;
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-news .news-item__head:hover {
  border-color: rgba(35, 230, 216, 0.45);
  background: rgba(20, 10, 46, 0.78);
}

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

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  font-size: var(--fs-6);
  letter-spacing: 0.1em;
}

.page-news .news-item__id {
  color: var(--news-cyan);
}

.page-news .news-item__phase,
.page-news .news-item__time {
  color: var(--grey);
}

.page-news .news-item__summary {
  display: block;
  font-family: var(--font-cn);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--white);
}

.page-news .news-item__arrow {
  position: absolute;
  right: 18px;
  top: 22px;
  color: var(--news-cyan);
  font-size: 18px;
  line-height: 1;
  transform: rotate(0deg);
  transition: transform 0.22s var(--ease);
}

.page-news .news-item[data-open="true"] .news-item__arrow {
  transform: rotate(-90deg);
}

.page-news .news-item[data-open="true"] .news-item__head {
  border-color: rgba(35, 230, 216, 0.5);
}

.page-news .news-item__detail {
  padding: 16px 18px 6px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--grey);
}

.page-news .news-item__detail p {
  margin: 0 0 10px;
  max-width: 62ch;
}

.page-news .news-item__refs {
  font-size: var(--fs-6);
  letter-spacing: 0.1em;
  color: var(--news-cyan);
  opacity: 0.85;
}

/* 月度汇总：整宽尺度差 */

.page-news .news-item--summary .news-item__head {
  padding-top: 24px;
  padding-bottom: 24px;
  background: linear-gradient(135deg, rgba(122, 59, 255, 0.24) 0%, rgba(35, 230, 216, 0.1) 100%);
  border-color: rgba(35, 230, 216, 0.36);
}

.page-news .news-item--summary .news-item__summary {
  font-family: var(--font-serif);
  font-size: var(--fs-4);
  line-height: 1.6;
}

/* ---------- 版本阶段回顾 ---------- */

.page-news .news-phases__grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-news .news-phases__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-news .news-phases__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

.page-news .news-phase {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.page-news .news-phase:last-child {
  border-bottom: 1px solid var(--line);
}

.page-news .news-phase--current {
  border-left: 2px solid var(--news-violet);
  padding-left: 18px;
}

.page-news .news-phase__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.page-news .news-phase__ver {
  font-size: var(--fs-3);
  letter-spacing: 0.06em;
  color: var(--grey);
}

.page-news .news-phase--current .news-phase__ver {
  color: var(--news-cyan);
}

.page-news .news-phase__state {
  font-size: var(--fs-6);
  letter-spacing: 0.14em;
  color: var(--grey);
}

.page-news .news-phase--current .news-phase__state {
  color: var(--amber);
}

.page-news .news-phase__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-news .news-phase__list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--grey);
  max-width: 56ch;
}

.page-news .news-phase__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 5px;
  height: 5px;
  background: var(--news-violet);
}

.page-news .news-phase--current .news-phase__list li::before {
  background: var(--news-cyan);
}

/* ---------- 跟进与回链 ---------- */

.page-news .news-follow__lede {
  max-width: 46ch;
}

.page-news .news-follow__grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-news .news-follow__card {
  display: grid;
  gap: 8px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--hold);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-news .news-follow__card:hover,
.page-news .news-follow__card:focus-visible {
  border-color: var(--news-cyan);
}

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

.page-news .news-follow__card-title {
  margin: 0;
  font-family: var(--font-cn);
  font-size: var(--fs-4);
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-news .news-follow__card-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grey);
}

.page-news .news-follow__card-cta {
  font-size: var(--fs-6);
  letter-spacing: 0.12em;
  color: var(--news-cyan);
  margin-top: 4px;
}

.page-news .news-follow__note {
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--grey);
  max-width: 62ch;
}

/* ---------- 响应式 ---------- */

@media (max-width: 719px) {
  .page-news .news-filter {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .page-news .news-filter::-webkit-scrollbar {
    display: none;
  }

  .page-news .news-filter__chip {
    flex: 0 0 auto;
  }

  .page-news .news-filter__count {
    flex: 0 0 auto;
  }

  .page-news .news-stream {
    padding-left: 22px;
  }

  .page-news .news-stream::before {
    left: 4px;
  }

  .page-news .news-item__node {
    left: -22px;
    top: 24px;
    width: 8px;
    height: 8px;
  }

  .page-news .news-item--summary .news-item__summary {
    font-size: var(--fs-4);
  }
}

@media (min-width: 720px) {
  .page-news .news-hero__en {
    transform: translateX(clamp(20px, 4vw, 56px));
  }

  .page-news .news-feature {
    grid-template-columns: 240px 1fr;
    align-items: stretch;
  }

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

@media (min-width: 900px) {
  .page-news .news-brief__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-news .news-phases__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-news .news-phases__figure {
    position: sticky;
    top: 120px;
  }
}

@media (min-width: 1080px) {
  .page-news .news-follow__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .news-stream {
    padding-left: 40px;
  }

  .page-news .news-stream::before {
    left: 8px;
  }

  .page-news .news-item__node {
    left: -36px;
    top: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item__node,
  .page-news .news-item__head,
  .page-news .news-item__arrow,
  .page-news .news-follow__card,
  .page-news .news-filter__chip {
    transition: none;
  }

  .page-news .news-item:hover .news-item__node {
    transform: none;
  }
}