.page-news {
  --news-rule: 1px solid var(--hairline);
  --news-pad: clamp(30px, 4.6vw, 76px);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3.6vw, 46px) 0 var(--news-pad);
  border-bottom: var(--news-rule);
}

.page-news .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--mist);
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-news .crumbs__item {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--ease);
}

.page-news .crumbs__item[href]:hover,
.page-news .crumbs__item[href]:focus-visible {
  color: var(--cyan);
}

.page-news .crumbs__item[aria-current="page"] {
  color: var(--silver);
}

.page-news .crumbs__sep {
  color: var(--hairline);
}

.page-news .news-hero__grid {
  display: grid;
  gap: clamp(26px, 3.6vw, 50px);
}

.page-news .news-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 4.6vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 14px 0 0;
  max-width: 22ch;
}

.page-news .news-hero__intro {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-news .news-hero__facts {
  list-style: none;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  border-top: var(--news-rule);
  max-width: 46rem;
}

.page-news .news-hero__facts li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 12px 0;
  border-bottom: var(--news-rule);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-news .news-hero__facts .mono {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-news .news-hero__media {
  width: 100%;
}

/* ---------- 章节头 ---------- */
.page-news .section {
  padding: var(--news-pad) 0;
}

.page-news .news-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 28px);
  align-items: start;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.page-news .section__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.25rem, 2.7vw, 1.9rem);
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--mist);
  transition: color var(--ease);
}

.page-news .section.is-active .section__no {
  color: var(--amber);
}

.page-news .section__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 2.5vw, 1.95rem);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--white);
  margin: 0;
}

.page-news .section__summary {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 版本时间轴 ---------- */
.page-news .vtl {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-news .vtl__item {
  position: relative;
  padding: 0 0 24px 22px;
  border-left: 2px solid var(--hairline);
}

.page-news .vtl__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--graphite);
  border: 1px solid var(--hairline);
}

.page-news .vtl__item:last-child {
  padding-bottom: 0;
}

.page-news .vtl__item--v4 {
  border-left-color: var(--amber);
}

.page-news .vtl__item--v4::before {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 176, 32, 0.12);
}

.page-news .vtl__no {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--mist);
  margin-bottom: 8px;
  transition: color var(--ease);
}

.page-news .vtl__item--v4 .vtl__no {
  color: var(--amber);
}

.page-news .vtl__title {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--silver);
}

.page-news .vtl__item--v4 .vtl__title {
  color: var(--white);
}

.page-news .vtl__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--mist);
  max-width: 44ch;
}

.page-news .news-tl-media {
  margin-top: clamp(26px, 3.6vw, 46px);
}

/* ---------- 停用节点 ---------- */
.page-news .sunset-band {
  display: grid;
  gap: 8px;
  padding: 20px 22px 22px 20px;
  border-left: 2px solid var(--ember);
  background: linear-gradient(90deg, rgba(232, 118, 58, 0.14), rgba(232, 118, 58, 0) 74%);
}

.page-news .sunset-band__mark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--ember);
}

.page-news .sunset-band__lead {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 2.2vw, 1.4rem);
  line-height: 1.4;
  color: var(--white);
}

.page-news .sunset-band__text {
  margin: 0;
  max-width: 66ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-news .migrate {
  list-style: none;
  margin: clamp(24px, 3.2vw, 38px) 0 0;
  padding: 0;
  display: grid;
  border-top: var(--news-rule);
}

.page-news .migrate__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  padding: 18px 0;
  border-bottom: var(--news-rule);
}

.page-news .migrate__no {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  line-height: 1.7;
  color: var(--amber);
}

.page-news .migrate__title {
  grid-column: 2;
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-news .migrate__desc {
  grid-column: 2;
  margin: 5px 0 0;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: var(--mist);
}

.page-news .migrate__desc a,
.page-news .entry__body a,
.page-news .cadence__facts a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-news .migrate__desc a:hover,
.page-news .entry__body a:hover,
.page-news .cadence__facts a:hover {
  color: var(--white);
}

/* ---------- 分类计数 ---------- */
.page-news .news-cats {
  list-style: none;
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: center;
}

.page-news .news-cats__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-news .news-cats__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-news .tag--mist {
  border: 1px solid var(--hairline);
  color: var(--mist);
}

/* ---------- 条目列表 ---------- */
.page-news .entries {
  border-top: var(--news-rule);
}

.page-news .entry {
  display: block;
  border-bottom: var(--news-rule);
}

.page-news .entry__row {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 18px 0 18px 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .entry__row::marker {
  content: "";
}

.page-news .entry__row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 0;
  background: var(--amber);
  transition: width var(--ease);
}

.page-news .entry[open] .entry__row::before {
  width: 2px;
}

.page-news .entry[open] {
  border-bottom-color: var(--amber-deep);
}

.page-news .entry__main {
  display: block;
  min-width: 0;
}

.page-news .entry__title {
  display: block;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--silver);
  transition: color var(--ease);
}

.page-news .entry__row:hover .entry__title,
.page-news .entry__row:focus-visible .entry__title {
  color: var(--white);
}

.page-news .entry[open] .entry__title {
  color: var(--white);
}

.page-news .entry__cue {
  display: block;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--mist);
  transition: color var(--ease);
}

.page-news .entry[open] .entry__cue {
  color: var(--amber);
}

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

.page-news .entry__when {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--mist);
  white-space: nowrap;
}

.page-news .entry__body {
  padding: 0 0 22px 14px;
  display: grid;
  gap: 10px;
  animation: news-fade 180ms ease both;
}

.page-news .entry__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--mist);
}

@keyframes news-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------- 专题系列 ---------- */
.page-news .series {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 2.6vw, 38px);
}

.page-news .series__item {
  border-top: 2px solid var(--hairline);
  padding: 18px 0 0;
}

.page-news .series__item--amber { border-top-color: var(--amber); }
.page-news .series__item--cyan { border-top-color: var(--cyan); }
.page-news .series__item--mist { border-top-color: var(--mist); }

.page-news .series__idx {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--mist);
  margin-bottom: 12px;
}

.page-news .series__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  line-height: 1.4;
  color: var(--white);
}

.page-news .series__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .series__scope {
  display: block;
  margin-top: 14px;
  padding-top: 12px;
  border-top: var(--news-rule);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--silver);
}

.page-news .news-series-media {
  margin-top: clamp(26px, 3.6vw, 46px);
}

/* ---------- 更新节奏 ---------- */
.page-news .cadence {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  align-items: center;
}

.page-news .cadence__lead {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-news .cadence__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--news-rule);
}

.page-news .cadence__facts li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 5px;
  padding: 13px 0;
  border-bottom: var(--news-rule);
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-news .cadence__facts b {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-news .cadence__media {
  width: 100%;
  max-width: 300px;
  justify-self: center;
}

.page-news .news-cadence {
  padding-bottom: clamp(46px, 6vw, 96px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-news .news-hero__facts li {
    grid-template-columns: 8.5em minmax(0, 1fr);
    align-items: baseline;
  }

  .page-news .cadence__facts li {
    grid-template-columns: 7.5em minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 720px) {
  .page-news .entry__row {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: 16px;
  }

  .page-news .entry__aside {
    justify-content: flex-end;
  }
}

@media (min-width: 820px) {
  .page-news .migrate {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(18px, 2.6vw, 38px);
    border-top: none;
  }

  .page-news .migrate__step {
    display: block;
    border-top: 1px solid var(--hairline);
    border-bottom: none;
    padding: 18px 0 0;
  }

  .page-news .migrate__desc {
    margin-top: 8px;
  }

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

@media (min-width: 880px) {
  .page-news .vtl {
    display: flex;
    align-items: stretch;
    gap: clamp(16px, 2.4vw, 34px);
  }

  .page-news .vtl__item {
    flex: 1 1 0;
    min-width: 0;
    padding: 22px 0 26px;
    border-left: none;
    border-top: 2px solid var(--hairline);
  }

  .page-news .vtl__item::before {
    left: 0;
    top: -5px;
  }

  .page-news .vtl__item--v4 {
    flex: 2.1 1 0;
    border-top-color: var(--amber);
    background: linear-gradient(180deg, rgba(255, 176, 32, 0.1), rgba(255, 176, 32, 0) 74%);
    padding-right: 22px;
    padding-left: 6px;
  }

  .page-news .vtl__item--v4::before {
    left: 4px;
  }

  .page-news .vtl__desc {
    max-width: 30ch;
  }

  .page-news .vtl__item--v4 .vtl__desc {
    max-width: 44ch;
  }
}

@media (min-width: 960px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 1000px) {
  .page-news .cadence {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
  }

  .page-news .cadence__media {
    justify-self: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .entry__body {
    animation: none;
  }

  .page-news .entry__row::before,
  .page-news .entry__title,
  .page-news .entry__cue,
  .page-news .section__no,
  .page-news .vtl__no {
    transition: none;
  }
}