.page-news {
  --news-radius: 16px;
  --news-pad: 20px;
  padding-bottom: 72px;
}

.page-news .news-shell {
  width: 100%;
  max-width: var(--arc-shell);
  margin: 0 auto;
  padding: 0 var(--news-pad);
}

/* ---------- 面包屑 ---------- */
.page-news .news-crumbs {
  padding-top: 22px;
}

.page-news .news-crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--arc-mist);
}

.page-news .news-crumbs__current {
  color: var(--arc-ice);
  font-weight: 600;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: 30px 0 36px;
  border-bottom: 2px solid var(--arc-line-strong);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -2px;
  width: min(56%, 340px);
  height: 6px;
  background: linear-gradient(90deg, var(--arc-violet), var(--arc-cyan));
}

.page-news .news-hero__title {
  max-width: 900px;
  margin: 14px 0 18px;
  font-size: clamp(34px, 7.2vw, 68px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--arc-ice);
}

.page-news .news-hero__lede {
  max-width: 720px;
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--arc-mist);
}

.page-news .news-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 30px 0 0;
}

.page-news .news-hero__stat {
  padding: 4px 0 4px 14px;
  border-left: 2px solid var(--arc-line-strong);
}

.page-news .news-hero__stat dt {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--arc-mist);
}

.page-news .news-hero__stat dd {
  margin: 6px 0 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--arc-ice);
}

.page-news .news-hero__stat dd .arc-num {
  margin-right: 2px;
  font-size: 26px;
  color: var(--arc-cyan);
}

/* ---------- 通用图片容器 ---------- */
.page-news .news-figure {
  margin: 0;
  border: 2px solid var(--arc-line-strong);
  border-radius: var(--news-radius);
  overflow: hidden;
  background: var(--arc-abyss);
  box-shadow: var(--arc-shadow-sm);
}

.page-news .arc-media {
  aspect-ratio: auto;
}

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

.page-news .arc-media__caption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--arc-mist);
  border-top: 2px solid var(--arc-line);
}

/* ---------- 更新节奏 ---------- */
.page-news .news-rhythm__grid {
  display: grid;
  gap: 30px;
}

.page-news .news-rhythm__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-rhythm__item {
  position: relative;
  padding-top: 20px;
  border-top: 2px solid var(--arc-line);
}

.page-news .news-rhythm__item::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--arc-cyan);
  box-shadow: 0 0 14px rgba(52, 241, 211, 0.8);
}

.page-news .news-rhythm__scale {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--arc-cyan);
}

.page-news .news-rhythm__name {
  margin: 8px 0 8px;
  font-size: 20px;
  line-height: 1.4;
  color: var(--arc-ice);
}

.page-news .news-rhythm__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--arc-mist);
}

.page-news .news-rhythm__tip {
  margin-top: 26px;
  padding-left: 14px;
  border-left: 2px solid var(--arc-ember);
}

/* ---------- 条目流 ---------- */
.page-news .news-timeline {
  margin-bottom: 34px;
}

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

.page-news .news-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news .news-filter__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 2px solid var(--arc-line-strong);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--arc-ice);
  cursor: pointer;
  transition: background 0.2s var(--arc-ease), border-color 0.2s var(--arc-ease),
    transform 0.2s var(--arc-ease), box-shadow 0.2s var(--arc-ease);
}

.page-news .news-filter__label:hover {
  transform: translateY(-2px);
  border-color: var(--arc-cyan);
}

.page-news .news-filter__label .arc-num {
  font-size: 13px;
  color: var(--arc-cyan);
}

.page-news #nf-all:checked ~ .news-filters label[for="nf-all"],
.page-news #nf-update:checked ~ .news-filters label[for="nf-update"],
.page-news #nf-feature:checked ~ .news-filters label[for="nf-feature"],
.page-news #nf-guide:checked ~ .news-filters label[for="nf-guide"] {
  border-color: var(--arc-cyan);
  background: rgba(52, 241, 211, 0.12);
  box-shadow: 0 0 0 1px rgba(52, 241, 211, 0.35);
}

.page-news #nf-update:checked ~ .news-flow .news-item:not(.is-update),
.page-news #nf-feature:checked ~ .news-flow .news-item:not(.is-feature),
.page-news #nf-guide:checked ~ .news-flow .news-item:not(.is-guide) {
  display: none;
}

.page-news .news-flow {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--arc-line-strong);
}

.page-news .news-item {
  display: grid;
  gap: 10px;
  padding: 20px 14px;
  border-bottom: 2px solid var(--arc-line);
  transition: background 0.25s var(--arc-ease), padding-left 0.25s var(--arc-ease);
}

.page-news .news-item:hover {
  background: var(--arc-abyss);
  padding-left: 24px;
}

.page-news .news-item__title {
  margin: 0;
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.5;
  color: var(--arc-ice);
}

.page-news .news-pin {
  display: inline-block;
  margin-right: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--arc-void);
  background: var(--arc-gold);
}

.page-news .news-item__sum {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--arc-mist);
}

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

.page-news .news-item__time {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--arc-mist);
}

.page-news .news-tag {
  display: inline-block;
  padding: 3px 11px;
  border: 2px solid currentColor;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.page-news .news-tag--update {
  color: var(--arc-cyan);
  background: rgba(11, 46, 49, 0.92);
}

.page-news .news-tag--feature {
  color: #b9a6ff;
  background: rgba(36, 19, 86, 0.9);
}

.page-news .news-tag--guide {
  color: var(--arc-gold);
  background: rgba(69, 21, 40, 0.9);
}

/* ---------- 专题系列 ---------- */
.page-news .news-series__grid {
  display: grid;
  gap: 32px;
}

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

.page-news .news-series__item {
  padding: 2px 0 2px 18px;
  border-left: 3px solid var(--arc-violet);
}

.page-news .news-series__name {
  margin: 12px 0 8px;
  font-size: 21px;
  line-height: 1.4;
  color: var(--arc-ice);
}

.page-news .news-series__item p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--arc-mist);
}

/* ---------- 人群阅读指引 ---------- */
.page-news .news-paths__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: paths;
}

.page-news .news-path {
  position: relative;
  counter-increment: paths;
  padding: 20px 18px 20px 54px;
  background: var(--arc-abyss);
  border: 2px solid var(--arc-line);
  border-radius: var(--news-radius);
  transition: border-color 0.2s var(--arc-ease), transform 0.2s var(--arc-ease);
}

.page-news .news-path:hover {
  border-color: var(--arc-violet);
  transform: translateY(-3px);
}

.page-news .news-path::before {
  content: counter(paths, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 21px;
  font-family: var(--arc-font-mono);
  font-size: 17px;
  color: var(--arc-cyan);
}

.page-news .news-path__name {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--arc-ice);
}

.page-news .news-path__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--arc-mist);
}

.page-news .news-paths__map {
  margin-top: 30px;
}

/* ---------- 回访入口 ---------- */
.page-news .news-follow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-news .news-follow__card {
  display: flex;
  flex-direction: column;
  padding: 24px 20px;
  background: var(--arc-abyss);
  border: 2px solid var(--arc-line-strong);
  border-radius: var(--news-radius);
  box-shadow: var(--arc-shadow-sm);
  transition: transform 0.2s var(--arc-ease), box-shadow 0.2s var(--arc-ease);
}

.page-news .news-follow__card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--arc-shadow);
}

.page-news .news-follow__card h3 {
  margin: 0 0 10px;
  font-size: 19px;
  color: var(--arc-ice);
}

.page-news .news-follow__card p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--arc-mist);
}

.page-news .news-follow__card .arc-btn {
  margin-top: auto;
  align-self: flex-start;
}

.page-news .news-follow__card--save {
  border-color: rgba(124, 77, 255, 0.6);
}

.page-news .news-follow__card--ask {
  border-color: rgba(255, 138, 61, 0.6);
}

.page-news .news-follow__note {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 2px solid var(--arc-line);
  font-size: 15px;
  line-height: 1.9;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-news {
    --news-pad: 32px;
  }

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

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

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

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

@media (min-width: 880px) {
  .page-news .news-item {
    grid-template-columns: minmax(0, 1fr) 210px;
    align-items: start;
    gap: 26px;
    padding: 22px 16px;
  }

  .page-news .news-item__side {
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
    gap: 8px;
  }

  .page-news .news-item__sum {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.25s var(--arc-ease);
  }

  .page-news .news-item:hover .news-item__sum {
    -webkit-line-clamp: 4;
    color: var(--arc-ice);
  }
}

@media (min-width: 960px) {
  .page-news {
    --news-pad: 44px;
  }

  .page-news .news-rhythm__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 42px;
  }

  .page-news .news-series__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 44px;
  }

  .page-news .news-series__items {
    padding-top: 36px;
  }

  .page-news .news-series__item:nth-child(2) {
    margin-left: 28px;
  }

  .page-news .news-series__item:nth-child(3) {
    margin-left: 56px;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .page-news .news-filter__label,
  .page-news .news-item,
  .page-news .news-path,
  .page-news .news-follow__card {
    transition: none;
  }

  .page-news .news-filter__label:hover,
  .page-news .news-path:hover,
  .page-news .news-follow__card:hover {
    transform: none;
  }
}
<<<END>>>