.page-news {
  --cat-accent: var(--green-hi);
  --rail-accent: var(--orange);
  padding-bottom: var(--s3);
}

.page-news .breadcrumb {
  margin-top: var(--s1);
}

/* ---------- 首屏 ---------- */
.page-news .col-hero {
  display: grid;
  gap: var(--s2);
  margin-top: var(--s1);
  padding-top: var(--s1);
  border-top: 1px solid var(--line);
}

.page-news .col-hero__lead {
  margin-top: 16px;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-news .col-hero h1 {
  margin-top: 10px;
  font-size: clamp(30px, 6.4vw, 54px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-news .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-mute);
}

.page-news .spine {
  display: inline-block;
  width: 22px;
  height: 4px;
  background: var(--orange);
}

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

.page-news .spine--paper {
  background: var(--orange);
}

.page-news .col-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s1) var(--s2);
  margin: var(--s2) 0 0;
  padding: 0;
  list-style: none;
}

.page-news .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 4px solid var(--green-hi);
}

.page-news .stat:nth-child(2) {
  border-left-color: var(--orange);
}

.page-news .stat:nth-child(3) {
  border-left-color: var(--cyan);
}

.page-news .stat:nth-child(4) {
  border-left-color: var(--silver);
}

.page-news .stat .num--lg {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--text);
}

.page-news .stat__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-mute);
}

.page-news .col-hero__media {
  border: 1px solid var(--line);
  background: var(--green-deep);
  aspect-ratio: 16 / 9;
}

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

.page-news .media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 索引 + 列表骨架 ---------- */
.page-news .index-sec,
.page-news .series-sec,
.page-news .cadence-sec,
.page-news .tip-sec {
  margin-top: var(--s3);
}

.page-news .section__head h2 {
  margin-top: 10px;
  font-size: clamp(24px, 4.4vw, 36px);
  font-weight: 900;
  line-height: 1.24;
  color: var(--text);
}

.page-news .index-sec__lead,
.page-news .series-sec__lead {
  margin-top: 12px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-news .shell {
  display: grid;
  gap: var(--s2);
  margin-top: var(--s2);
}

/* ---------- 左侧脊标索引 ---------- */
.page-news .rail {
  border: 1px solid var(--line);
  background: var(--graphite);
  padding: var(--s1) 0;
}

.page-news .rail__note {
  padding: 0 var(--s1) 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-mute);
}

.page-news .rail__list {
  display: flex;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-news .rail__list > li {
  flex: 0 0 auto;
}

.page-news .rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px var(--s1);
  border-left: 4px solid transparent;
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: background 200ms var(--ease), color 200ms var(--ease),
    border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-news .rail__list > li:nth-child(1) .rail__link { --rail-accent: var(--orange); }
.page-news .rail__list > li:nth-child(2) .rail__link { --rail-accent: var(--green-hi); }
.page-news .rail__list > li:nth-child(3) .rail__link { --rail-accent: var(--cyan); }
.page-news .rail__list > li:nth-child(4) .rail__link { --rail-accent: var(--orange-soft); }
.page-news .rail__list > li:nth-child(5) .rail__link { --rail-accent: var(--silver); }

.page-news .rail__link:hover,
.page-news .rail__link:focus-visible {
  color: var(--text);
  background: rgba(255, 107, 53, 0.08);
  border-left-color: var(--rail-accent);
  transform: translateX(2px);
}

.page-news .rail__num {
  font-size: 12px;
  color: var(--text-mute);
}

.page-news .rail__name {
  font-size: 15px;
  font-weight: 600;
}

.page-news .rail__count {
  margin-left: 2px;
  padding: 1px 6px;
  font-size: 12px;
  border: 1px solid var(--line);
  color: var(--text-dim);
}

/* ---------- 分类区块 ---------- */
.page-news .cat {
  margin-top: var(--s3);
}

.page-news .cat:first-child {
  margin-top: 0;
}

.page-news .cat--announce { --cat-accent: var(--orange); }
.page-news .cat--version { --cat-accent: var(--green-hi); }
.page-news .cat--season { --cat-accent: var(--cyan); }
.page-news .cat--data { --cat-accent: var(--orange-soft); }
.page-news .cat--topic { --cat-accent: var(--silver); }

.page-news .cat__head {
  border-top: 3px solid var(--cat-accent);
  padding-top: 14px;
}

.page-news .cat__kicker {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cat-accent);
}

.page-news .cat__title {
  margin: 8px 0 8px;
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 900;
  line-height: 1.24;
  color: var(--text);
}

.page-news .cat__desc {
  max-width: 40em;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-news .cat__media {
  margin: var(--s2) 0 0;
  border: 1px solid var(--line);
  background: var(--ink);
}

/* ---------- 条目资料卡 ---------- */
.page-news .items {
  display: grid;
  gap: var(--s1);
  margin: var(--s2) 0 0;
  padding: 0;
  list-style: none;
}

.page-news .item {
  position: relative;
  padding: var(--s1);
  background: var(--graphite);
  border: 1px solid var(--line);
  border-left: 4px solid var(--cat-accent);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

.page-news .item:hover {
  border-color: var(--line-strong);
  border-left-color: var(--cat-accent);
  transform: translateX(2px);
}

.page-news .item__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-news .item__no {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--cat-accent);
}

.page-news .item__title {
  font-size: 18px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--text);
}

.page-news .item__sum {
  margin-top: 10px;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-news .item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  font-size: 12px;
  color: var(--text-mute);
}

.page-news .item__tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--cat-accent);
  border: 1px solid var(--cat-accent);
}

.page-news .item__read,
.page-news .item__when {
  letter-spacing: 0.02em;
}

.page-news .item__when {
  padding-left: 10px;
  border-left: 1px solid var(--line);
}

/* ---------- 展开面板 ---------- */
.page-news .item .disclosure {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.page-news .disclosure__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  background: none;
  border: 0;
  font: inherit;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-mute);
  cursor: pointer;
  transition: color 200ms var(--ease);
}

.page-news .disclosure__btn:hover,
.page-news .disclosure__btn:focus-visible {
  color: var(--orange);
}

.page-news .points {
  display: grid;
  gap: 8px;
  margin: 6px 0 0;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-news .points a,
.page-news .cadence__card a {
  color: var(--orange-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 专题系列 ---------- */
.page-news .series-wrap {
  display: grid;
  gap: var(--s2);
  margin-top: var(--s2);
}

.page-news .series__media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--indigo);
}

.page-news .series__list {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-news .series__item {
  padding: 0 var(--s1);
  background: var(--graphite);
  border: 1px solid var(--line);
  border-left: 4px solid var(--silver);
}

.page-news .series__list .series__item:nth-child(1) { border-left-color: var(--green-hi); }
.page-news .series__list .series__item:nth-child(2) { border-left-color: var(--orange); }
.page-news .series__list .series__item:nth-child(3) { border-left-color: var(--cyan); }

.page-news .series__btn {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 14px 0;
  background: none;
  border: 0;
  font: inherit;
  text-align: left;
  color: var(--text);
  cursor: pointer;
}

.page-news .series__idx {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--text-mute);
}

.page-news .series__name {
  flex: 1 1 auto;
  font-size: 17px;
  font-weight: 800;
}

.page-news .series__count {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--orange);
}

.page-news .series__order {
  display: grid;
  gap: 8px;
  margin: 0 0 16px;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-news .series__order li::marker {
  font-family: var(--font-mono);
  color: var(--orange);
}

/* ---------- 更新节奏 ---------- */
.page-news .cadence {
  display: grid;
  gap: var(--s1);
  margin-top: var(--s2);
}

.page-news .cadence__card {
  padding: var(--s1);
  background: var(--ink);
  border: 1px solid var(--line);
  border-top: 4px solid var(--green-hi);
}

.page-news .cadence__card--orange { border-top-color: var(--orange); }
.page-news .cadence__card--cyan { border-top-color: var(--cyan); }

.page-news .cadence__kicker {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-mute);
}

.page-news .cadence__title {
  margin: 8px 0 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
}

.page-news .cadence__card p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 线索与协作 ---------- */
.page-news .callout {
  padding: var(--s2) var(--s1);
  background: var(--green-deep);
  border: 1px solid var(--green-hi);
  color: var(--paper);
}

.page-news .callout h2 {
  margin-top: 12px;
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 900;
  line-height: 1.26;
  color: var(--paper);
}

.page-news .callout__grid {
  display: grid;
  gap: var(--s2);
  margin-top: var(--s2);
}

.page-news .callout__col h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--paper);
}

.page-news .callout__col ul {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: #DCE7E0;
}

.page-news .callout__col li::marker {
  color: var(--orange);
}

.page-news .callout__note {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

.page-news .callout .btn {
  margin-top: var(--s2);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-news .cadence {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-news .callout {
    padding: var(--s2);
  }

  .page-news .item {
    padding: var(--s2);
  }

  .page-news .items {
    gap: var(--s2);
  }
}

@media (min-width: 900px) {
  .page-news .col-hero {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: var(--s3);
    padding-top: var(--s2);
  }

  .page-news .shell {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: var(--s3);
    align-items: start;
  }

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

  .page-news .rail__list {
    flex-direction: column;
    overflow: visible;
  }

  .page-news .rail__link {
    border-left-width: 5px;
  }

  .page-news .series-wrap {
    grid-template-columns: 5fr 7fr;
    gap: var(--s3);
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-news .col-hero {
    grid-template-columns: 8fr 4fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-news .item:hover,
  .page-news .rail__link:hover,
  .page-news .rail__link:focus-visible {
    transform: none;
  }
}