.page-news {
  --news-gutter: 30px;
  --news-node: 15px;
}

/* ---------- 面包屑与刊头 ---------- */
.page-news .breadcrumbs {
  margin-bottom: 4px;
}

.page-news .news-masthead {
  position: relative;
  padding: 24px 0 30px;
  text-align: center;
}

.page-news .news-masthead__kicker {
  margin: 0;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--slate-400);
}

.page-news .news-masthead__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.6vw, 46px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--paper-050);
}

.page-news .news-masthead__lede {
  margin: 16px auto 0;
  max-width: 38em;
  text-align: center;
  color: var(--body-text);
  font-size: 17px;
  line-height: 1.75;
}

.page-news .news-masthead__rule {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 26px;
}

.page-news .news-masthead__line {
  flex: 1 1 auto;
  height: 1px;
  background: var(--ink-700);
}

.page-news .news-masthead__tick {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border: 1px solid var(--cyan-500);
  transform: rotate(45deg);
}

/* ---------- 刊头示意图 ---------- */
.page-news .news-banner {
  margin: 0;
  border: 1px solid var(--ink-700);
}

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

/* ---------- 筛选条 ---------- */
.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  padding: 20px 0;
  margin-bottom: 28px;
  border-top: 1px solid var(--ink-700);
  border-bottom: 1px solid var(--ink-700);
}

.page-news .filter-bar__btn {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  padding: 9px 14px;
  border: 1px solid var(--ink-700);
  border-radius: 999px;
  background: transparent;
  color: var(--slate-400);
  cursor: pointer;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-news .filter-bar__btn:hover {
  color: var(--body-text);
  border-color: var(--slate-400);
}

.page-news .filter-bar__btn:focus-visible {
  outline: 2px solid var(--blue-300);
  outline-offset: 2px;
}

.page-news .filter-bar__btn[aria-pressed="true"] {
  color: var(--cyan-500);
  border-color: var(--cyan-500);
  background: rgba(23, 196, 214, .07);
}

.page-news .filter-bar__btn .mono {
  font-size: 11px;
  color: inherit;
  opacity: .7;
}

.page-news .filter-bar__btn[aria-pressed="true"] .mono {
  opacity: 1;
}

/* ---------- 空态 ---------- */
.page-news .news-empty {
  margin: 0 0 24px;
  padding: 20px;
  border: 1px dashed var(--ink-700);
  color: var(--slate-400);
  font-size: 15px;
  text-align: center;
}

/* ---------- 公告流：时间轴 + 卡片 ---------- */
.page-news .news-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .news-row {
  position: relative;
  padding-left: var(--news-gutter);
  margin-bottom: 20px;
}

.page-news .news-row::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 24px;
  bottom: -20px;
  width: 2px;
  background: var(--ink-700);
}

.page-news .news-row:last-child {
  margin-bottom: 0;
}

.page-news .news-row:last-child::before {
  bottom: auto;
  height: 14px;
}

.page-news .news-row__node {
  position: absolute;
  left: 0;
  top: 26px;
  width: var(--news-node);
  height: var(--news-node);
  border: 2px solid var(--cyan-500);
  border-radius: 50%;
  background: var(--ink-950);
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-news .news-row:hover .news-row__node {
  background: var(--cyan-500);
}

.page-news .news-card {
  margin: 0;
  padding: 20px 18px;
  box-shadow: 6px 6px 0 -1px var(--ink-700);
  transition: box-shadow .24s var(--ease), transform .24s var(--ease);
}

.page-news .news-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 -1px var(--ink-700);
}

.page-news .news-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.page-news .news-card__time {
  font-size: 12px;
  color: var(--slate-400);
}

.page-news .news-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--paper-050);
}

.page-news .news-card__sum {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body-text);
}

.page-news .news-card__more {
  margin: 14px 0 0;
  font-size: 15px;
}

.page-news .news-card__media {
  margin: 18px 0 0;
  border: 1px solid var(--ink-700);
}

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

/* 节点与网络标签用蓝系区分 */
.page-news .news-stamp--node {
  color: var(--blue-300);
  border-color: var(--blue-600);
}

/* ---------- 本周需要处理的事 ---------- */
.page-news .todo-panel {
  max-width: 760px;
  padding: 24px 20px;
  box-shadow: 8px 8px 0 -1px var(--ink-700);
}

.page-news .todo-panel__lede {
  margin: 14px 0 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body-text);
}

.page-news .todo-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-news .todo-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 0;
  border-top: 1px solid var(--ink-700);
  font-size: 16px;
  line-height: 1.7;
  color: var(--body-text);
}

.page-news .todo-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-news .todo-list__idx {
  font-size: 13px;
  color: var(--amber-500);
  padding-top: 3px;
}

/* ---------- 更新节奏 ---------- */
.page-news .news-rhythm__grid {
  margin-top: 24px;
}

.page-news .news-rhythm__card {
  padding: 22px 20px;
  border-left: 3px solid var(--cyan-500);
  box-shadow: none;
}

.page-news .news-rhythm__card--alt {
  border-left-color: var(--amber-500);
}

.page-news .news-rhythm__text {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body-text);
}

.page-news .news-rhythm__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 0;
}

.page-news .news-rhythm__hint {
  display: block;
  margin-top: 18px;
  max-width: 60ch;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 800px) {
  .page-news {
    --news-gutter: 40px;
  }

  .page-news .news-masthead {
    padding: 34px 0 38px;
  }

  .page-news .news-filter {
    gap: 10px;
    padding: 22px 0;
  }

  .page-news .filter-bar__btn {
    font-size: 13.5px;
    padding: 10px 18px;
  }

  .page-news .news-card {
    padding: 22px 22px;
  }

  .page-news .news-card--media {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 26px;
    align-items: start;
  }

  .page-news .news-card--media .news-card__media {
    margin: 0;
  }

  .page-news .news-card__title {
    font-size: 22px;
  }

  .page-news .todo-panel {
    padding: 28px 26px;
  }

  .page-news .news-rhythm__card {
    padding: 26px 24px;
  }
}

@media (min-width: 1080px) {
  .page-news .news-card--media {
    grid-template-columns: minmax(0, 1fr) 320px;
  }

  .page-news .news-masthead__title {
    font-size: 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-card,
  .page-news .news-row__node,
  .page-news .filter-bar__btn {
    transition: none;
  }

  .page-news .news-card:hover {
    transform: none;
  }
}