.page-news {
  --news-deep-amber: #8C6417;
  --news-deep-cool: #40564C;
  --news-edge: rgba(44, 90, 73, .34);
}

/* ---------- 面包屑 ---------- */
.page-news .news-crumb {
  margin-bottom: 28px;
  font-size: 13px;
  color: rgba(247, 243, 233, .6);
}
.page-news .news-crumb a {
  color: rgba(247, 243, 233, .84);
  text-decoration: none;
  transition: color .2s var(--dc-ease);
}
.page-news .news-crumb a:hover,
.page-news .news-crumb a:focus-visible {
  color: var(--dc-amber-bright);
}
.page-news .news-crumb .dc-crumb__sep {
  margin: 0 8px;
  color: rgba(217, 162, 43, .55);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  overflow: hidden;
  padding-block: 24px 64px;
}
.page-news .news-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(217, 162, 43, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(217, 162, 43, .07) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 82%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 82%);
}
.page-news .news-hero > .dc-shell {
  position: relative;
  z-index: 1;
}

.page-news .news-hero__grid {
  display: grid;
  gap: 36px;
}

.page-news .news-hero__annot {
  margin: 0 0 16px;
  color: var(--dc-amber);
  letter-spacing: .16em;
}

.page-news .news-hero__title {
  margin: 0 0 20px;
  color: var(--dc-porcelain);
  max-width: 15em;
}

.page-news .news-hero__lede {
  margin: 0 0 30px;
  color: rgba(247, 243, 233, .8);
  max-width: 58ch;
}

.page-news .news-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-news .news-hero .dc-btn--ghost {
  color: var(--dc-porcelain);
  border-color: rgba(247, 243, 233, .34);
}
.page-news .news-hero .dc-btn--ghost:hover,
.page-news .news-hero .dc-btn--ghost:focus-visible {
  color: var(--dc-amber-bright);
  border-color: var(--dc-amber-bright);
}

.page-news .news-hero__side {
  position: relative;
  padding: 24px 22px 20px;
  background: rgba(27, 68, 54, .62);
  border: 1px solid var(--dc-felt-line);
  border-top: 3px solid var(--dc-amber);
}

.page-news .news-hero__side-title {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--dc-amber-bright);
}

.page-news .news-hero__toc {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-news .news-hero__toc-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  column-gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(44, 90, 73, .9);
}
.page-news .news-hero__toc-item:last-child {
  border-bottom: 0;
}
.page-news .news-hero__toc-num {
  grid-row: span 2;
  padding-top: 2px;
  font-size: 13px;
  color: var(--dc-amber);
}
.page-news .news-hero__toc-cat {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--dc-cool);
}
.page-news .news-hero__toc-name {
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--dc-porcelain);
}

.page-news .news-hero__stamp {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(44, 90, 73, .9);
  font-family: var(--dc-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--dc-amber-bright);
}

/* ---------- 条目浏览 ---------- */
.page-news .news-browse {
  padding-block: 64px;
}
.page-news .news-browse__head {
  max-width: 66ch;
  margin-bottom: 40px;
}
.page-news .news-browse__head .dc-annot {
  margin: 0 0 14px;
  color: var(--news-deep-amber);
  letter-spacing: .16em;
}
.page-news .news-browse__title {
  margin: 0 0 16px;
}
.page-news .news-browse__head .dc-lede {
  margin: 0;
}

.page-news .news-tabs {
  display: grid;
  gap: 26px;
}

.page-news .news-tabs__rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}
.page-news .news-tabs__rail::-webkit-scrollbar {
  height: 4px;
}
.page-news .news-tabs__rail::-webkit-scrollbar-thumb {
  background: var(--dc-line);
}

.page-news .news-tab {
  position: relative;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-width: 148px;
  padding: 12px 14px 12px 18px;
  border: 1px solid var(--dc-line);
  border-radius: 0;
  background: transparent;
  color: var(--dc-gray);
  font-family: var(--dc-sans);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  text-align: left;
  white-space: nowrap;
  cursor: pointer;
  transition: color .2s var(--dc-ease), background-color .2s var(--dc-ease), border-color .2s var(--dc-ease);
}
.page-news .news-tab::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  bottom: -1px;
  width: 3px;
  background: transparent;
  transition: background-color .2s var(--dc-ease);
}
.page-news .news-tab:hover {
  color: var(--dc-brown);
  border-color: rgba(28, 23, 16, .3);
}
.page-news .news-tab[aria-selected="true"] {
  background: var(--dc-ink);
  border-color: var(--dc-ink);
  color: var(--dc-porcelain);
}
.page-news .news-tab[aria-selected="true"]::before {
  background: var(--dc-amber);
}
.page-news .news-tab__count {
  font-family: var(--dc-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--dc-cool);
}
.page-news .news-tab[aria-selected="true"] .news-tab__count {
  color: var(--dc-amber-bright);
}

.page-news .news-panel[hidden] {
  display: none;
}

.page-news .news-list {
  display: grid;
  gap: 20px;
}

/* ---------- 条目卡 ---------- */
.page-news .news-item {
  display: flex;
  flex-direction: column;
  padding: 22px;
  background: var(--dc-paper);
  border: 1px solid var(--news-edge);
  transition: transform .24s var(--dc-ease), border-color .24s var(--dc-ease), box-shadow .24s var(--dc-ease);
}
.page-news .news-item:hover {
  transform: translateY(-3px);
  border-color: var(--dc-amber);
  box-shadow: 0 14px 30px -20px rgba(7, 20, 16, .6);
}
.page-news .news-item--feature {
  padding: 0;
  overflow: hidden;
}

.page-news .news-item__media {
  margin: 0;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--dc-ink);
}
.page-news .news-item__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .news-item__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1 1 auto;
}
.page-news .news-item--feature .news-item__body {
  padding: 22px 22px 22px;
}

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

.page-news .news-item__title {
  margin: 0;
  font-family: var(--dc-sans);
  font-size: 17.5px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--dc-brown);
}
.page-news .news-item--feature .news-item__title {
  font-size: 21px;
}

.page-news .news-item__excerpt {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--dc-gray);
}

.page-news .news-item__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 13px;
  border-top: 1px solid var(--dc-line-soft);
  font-family: var(--dc-mono);
  font-size: 12px;
  letter-spacing: .02em;
}

/* ---------- 展签标签 ---------- */
.page-news .news-tag {
  position: relative;
  display: inline-block;
  padding: 3px 10px 3px 13px;
  border: 1px solid currentColor;
  background: transparent;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.7;
  letter-spacing: .06em;
}
.page-news .news-tag::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 6px;
  height: 6px;
  background: var(--dc-paper);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}
.page-news .news-tag--progress { color: var(--dc-cinnabar); }
.page-news .news-tag--rules { color: var(--dc-brown); }
.page-news .news-tag--stats { color: var(--news-deep-amber); }
.page-news .news-tag--device { color: var(--news-deep-cool); }

/* ---------- 专题序列 ---------- */
.page-news .news-series {
  padding-block: 64px;
}
.page-news .news-series__head {
  max-width: 68ch;
  margin-bottom: 38px;
}
.page-news .news-series__head .dc-annot {
  margin: 0 0 14px;
  color: var(--news-deep-amber);
  letter-spacing: .16em;
}
.page-news .news-series__title {
  margin: 0 0 16px;
}
.page-news .news-series__head .dc-lede {
  margin: 0;
}

.page-news .news-acc {
  border-top: 1px solid var(--dc-line);
}
.page-news .news-acc__item {
  border-bottom: 1px solid var(--dc-line);
}
.page-news .news-acc__title {
  margin: 0;
}
.page-news .news-acc__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 22px 4px 22px 26px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--dc-brown);
  font-family: var(--dc-sans);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  position: relative;
  transition: color .2s var(--dc-ease);
}
.page-news .news-acc__btn::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 10px;
  height: 10px;
  margin-top: -5px;
  border-radius: 50%;
  border: 2px solid var(--dc-amber);
  background: transparent;
  transition: background-color .2s var(--dc-ease);
}
.page-news .news-acc__btn[aria-expanded="true"]::before {
  background: var(--dc-amber);
}
.page-news .news-acc__btn:hover {
  color: var(--dc-cinnabar);
}
.page-news .news-acc__count {
  flex: 0 0 auto;
  font-family: var(--dc-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--dc-gray);
}

.page-news .news-acc__panel {
  padding: 0 4px 24px 26px;
}

.page-news .news-series__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.page-news .news-series__item {
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) auto;
  align-items: center;
  column-gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--dc-line);
}
.page-news .news-series__item:last-child {
  border-bottom: 0;
}
.page-news .news-series__num {
  font-size: 12px;
  color: var(--dc-amber);
}
.page-news .news-series__name {
  font-size: 15px;
  line-height: 1.6;
  color: var(--dc-brown);
}
.page-news .news-series__time {
  font-family: var(--dc-mono);
  font-size: 12px;
  letter-spacing: .02em;
  white-space: nowrap;
}

/* ---------- 下一步 ---------- */
.page-news .news-next {
  padding-block: 64px;
}
.page-news .news-next__head {
  max-width: 64ch;
  margin-bottom: 38px;
}
.page-news .news-next__head .dc-annot {
  margin: 0 0 14px;
  color: var(--dc-amber);
  letter-spacing: .16em;
}
.page-news .news-next__title {
  margin: 0 0 16px;
  color: var(--dc-porcelain);
}
.page-news .news-next__head .dc-lede {
  margin: 0;
  color: rgba(247, 243, 233, .78);
}

.page-news .news-next__grid {
  display: grid;
  gap: 18px;
}
.page-news .news-next__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 24px 24px;
  background: rgba(27, 68, 54, .58);
  border: 1px solid var(--dc-felt-line);
  border-left: 3px solid var(--dc-amber);
  text-decoration: none;
  transition: background-color .24s var(--dc-ease), transform .24s var(--dc-ease), border-color .24s var(--dc-ease);
}
.page-news .news-next__card:hover,
.page-news .news-next__card:focus-visible {
  background: rgba(27, 68, 54, .88);
  transform: translateY(-3px);
  border-color: var(--dc-amber);
}
.page-news .news-next__index {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--dc-amber);
}
.page-news .news-next__card-title {
  margin: 0;
  font-family: var(--dc-sans);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--dc-porcelain);
}
.page-news .news-next__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(247, 243, 233, .76);
}
.page-news .news-next__go {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--dc-amber-bright);
}
.page-news .news-next__go::after {
  content: " →";
  font-family: var(--dc-mono);
}

.page-news .news-next__note {
  margin: 30px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(247, 243, 233, .72);
}
.page-news .news-next__note a {
  color: var(--dc-amber-bright);
  text-underline-offset: 4px;
}
.page-news .news-next__note a:hover,
.page-news .news-next__note a:focus-visible {
  color: var(--dc-porcelain);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .news-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
  .page-news .news-item--feature {
    grid-column: 1 / -1;
  }
  .page-news .news-item--feature .news-item__math,
  .page-news .news-item--feature .news-item__body {
    padding: 26px 28px 26px;
  }
  .page-news .news-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
  .page-news .news-series__list {
    flex-direction: row;
    align-items: stretch;
  }
  .page-news .news-series__item {
    display: block;
    flex: 1 1 0;
    min-width: 0;
    padding: 16px 30px 16px 16px;
    border-bottom: 0;
    border-left: 1px solid var(--dc-line);
  }
  .page-news .news-series__item:first-child {
    border-left: 0;
    padding-left: 0;
  }
  .page-news .news-series__item:last-child {
    padding-right: 0;
  }
  .page-news .news-series__item:not(:last-child)::after {
    content: "→";
    position: absolute;
    right: 10px;
    top: 16px;
    font-family: var(--dc-mono);
    font-size: 14px;
    line-height: 1;
    color: var(--dc-amber);
  }
  .page-news .news-series__num {
    display: block;
    margin-bottom: 6px;
  }
  .page-news .news-series__name {
    display: block;
    margin-bottom: 8px;
  }
  .page-news .news-series__time {
    display: block;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero {
    padding-block: 32px 76px;
  }
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }
  .page-news .news-crumb {
    margin-bottom: 40px;
  }
  .page-news .news-browse,
  .page-news .news-series,
  .page-news .news-next {
    padding-block: 84px;
  }
}

@media (min-width: 940px) {
  .page-news .news-tabs {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }
  .page-news .news-tabs__rail {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
    position: sticky;
    top: calc(var(--dc-header-h) + 28px);
  }
  .page-news .news-tab {
    width: 100%;
    min-width: 0;
    padding: 13px 14px 13px 18px;
  }
  .page-news .news-tab__name {
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-tab,
  .page-news .news-next__card,
  .page-news .news-acc__btn::before {
    transition: none;
  }
  .page-news .news-item:hover,
  .page-news .news-next__card:hover {
    transform: none;
  }
}
<<<END>>>