.page-news {
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

.page-news .crumbs {
  padding-top: clamp(12px, 2vw, 20px);
}

/* ---------- 首屏 ---------- */
.page-news .topics-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(20px, 3.4vw, 44px) 0 clamp(36px, 6vw, 76px);
}

.page-news .topics-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(14, 27, 42, 0.065) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(14, 27, 42, 0.065) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.35) 70%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.35) 70%, transparent 100%);
  pointer-events: none;
}

.page-news .topics-hero::after {
  content: "";
  position: absolute;
  top: 8%;
  right: -6%;
  z-index: -1;
  width: clamp(150px, 20vw, 280px);
  height: clamp(150px, 20vw, 280px);
  background: radial-gradient(circle, rgba(18, 200, 206, 0.3), transparent 68%);
  transform: rotate(-6deg);
  pointer-events: none;
}

.page-news .topics-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-news .topics-hero .annotation {
  display: block;
  margin: 0 0 14px;
}

.page-news .topics-hero h1 {
  margin: 0 0 clamp(14px, 2vw, 22px);
  line-height: 1.08;
}

.page-news .topics-hero__intro {
  max-width: 34em;
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-news .topics-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .hero-stats {
  list-style: none;
  margin: 0;
  padding: clamp(20px, 2.6vw, 32px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 26px);
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-news .hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-news .stat-num {
  font-family: var(--mono);
  font-size: clamp(26px, 3.2vw, 36px);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-news .stat-label {
  font-size: 13px;
  line-height: 1.55;
  letter-spacing: 0.04em;
  color: rgba(245, 239, 230, 0.74);
}

.page-news .topics-hero__note {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--green);
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 列表区 ---------- */
.page-news .board {
  padding: clamp(10px, 2vw, 22px) 0 clamp(38px, 5vw, 68px);
}

.page-news .board__title {
  margin: 0 0 clamp(18px, 2.6vw, 30px);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
  letter-spacing: -0.01em;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--ink);
}

.page-news .board__layout {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-news .board__filter-label {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--stone);
}

.page-news .filter-set {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

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

.page-news .filter-tag {
  --dot: var(--stone);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid var(--line);
  background: var(--paper-2);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink);
  cursor: pointer;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease), border-color 0.22s var(--ease);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-news .filter-tag::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--dot);
  flex: none;
}

.page-news .filter-tag--version { --dot: var(--clay); }
.page-news .filter-tag--experience { --dot: #0E7F84; }
.page-news .filter-tag--docs { --dot: var(--moss); }
.page-news .filter-tag--nodes { --dot: #1F7A4B; }
.page-news .filter-tag--all { --dot: var(--ink); }

.page-news .filter-tag:hover {
  border-color: var(--stone);
  background: var(--loess);
}

.page-news .filter-input:checked + .filter-tag {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.page-news .filter-input:focus-visible + .filter-tag {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .board__filter-note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
}

/* 筛选：纯前端 radio 控制 */
.page-news .board:has(#f-version:checked) .board__list [data-cat]:not([data-cat="version"]),
.page-news .board:has(#f-experience:checked) .board__list [data-cat]:not([data-cat="experience"]),
.page-news .board:has(#f-docs:checked) .board__list [data-cat]:not([data-cat="docs"]),
.page-news .board:has(#f-nodes:checked) .board__list [data-cat]:not([data-cat="nodes"]) {
  display: none;
}

.page-news .board:has(#f-version:checked) .rule-band,
.page-news .board:has(#f-experience:checked) .rule-band,
.page-news .board:has(#f-docs:checked) .rule-band,
.page-news .board:has(#f-nodes:checked) .rule-band {
  display: none;
}

/* 置顶专题 */
.page-news .pinned {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--clay);
  color: var(--paper);
  border: 1px solid var(--clay-deep);
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-news .pinned__media {
  position: relative;
  min-height: 208px;
  overflow: hidden;
  border-bottom: 1px solid var(--clay-deep);
}

.page-news .pinned__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-news .pinned__body {
  padding: clamp(20px, 3vw, 36px);
}

.page-news .pinned__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: rgba(245, 239, 230, 0.82);
}

.page-news .pinned__flag {
  background: var(--ink);
  color: var(--paper);
  padding: 3px 11px;
  letter-spacing: 0.2em;
  clip-path: polygon(0 0, 100% 0, 100% 68%, calc(100% - 10px) 100%, 0 100%);
}

.page-news .pinned__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-news .pinned__text {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(245, 239, 230, 0.93);
  max-width: 36em;
}

.page-news .pinned__list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-news .pinned__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(245, 239, 230, 0.9);
}

.page-news .pinned__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-news .pinned__link {
  display: inline-block;
  color: var(--paper);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-bottom: 2px solid var(--cyan);
  padding-bottom: 2px;
}

.page-news .pinned__link:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* 条目列表 */
.page-news .topic-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .topic-item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  column-gap: clamp(8px, 1.4vw, 18px);
  padding: clamp(16px, 2.2vw, 24px) 0;
  border-top: 1px solid var(--line);
  transition: background-color 0.24s var(--ease);
}

.page-news .topic-item__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
  padding-top: 0.5em;
  transition: color 0.24s var(--ease);
}

.page-news .topic-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--stone);
}

.page-news .topic-item__cat {
  padding: 1px 9px;
  border: 1px solid currentColor;
  font-size: 11.5px;
  letter-spacing: 0.14em;
}

.page-news .topic-item[data-cat="version"] .topic-item__cat { color: var(--clay); }
.page-news .topic-item[data-cat="experience"] .topic-item__cat { color: #0E7F84; }
.page-news .topic-item[data-cat="docs"] .topic-item__cat { color: var(--moss); }
.page-news .topic-item[data-cat="nodes"] .topic-item__cat { color: #1F7A4B; }

.page-news .topic-item__title {
  margin: 0 0 5px;
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.45;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: color 0.24s var(--ease);
}

.page-news .topic-item__sum {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--stone);
}

.page-news .topic-item__more {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-news .topic-item:hover {
  background: rgba(233, 192, 138, 0.18);
}

.page-news .topic-item:hover .topic-item__num {
  color: var(--clay);
}

.page-news .topic-item:hover .topic-item__title {
  color: var(--clay-deep);
}

@media (hover: hover) and (pointer: fine) {
  .page-news .topic-item__more {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    margin-top: 0;
    transition: max-height 0.32s var(--ease), opacity 0.32s var(--ease), margin-top 0.32s var(--ease);
  }

  .page-news .topic-item:hover .topic-item__more,
  .page-news .topic-item:focus-within .topic-item__more {
    max-height: 8em;
    opacity: 1;
    margin-top: 6px;
  }
}

.page-news .rule-band {
  list-style: none;
  margin: clamp(12px, 2vw, 20px) 0;
  padding: 11px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.page-news .rule-band .mono {
  color: var(--green);
  letter-spacing: 0.16em;
}

/* ---------- 系列专题 ---------- */
.page-news .series {
  padding: clamp(36px, 5vw, 68px) 0;
  border-top: 1px solid var(--line);
  background: var(--paper-2);
}

.page-news .series__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

.page-news .series__intro .annotation {
  display: block;
  margin: 0 0 12px;
}

.page-news .series__intro h2 {
  margin: 0 0 14px;
  line-height: 1.2;
}

.page-news .series__lead {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  max-width: 32em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-news .figure {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper);
}

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

.page-news .series__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .series__item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 4px 14px;
  padding: clamp(16px, 2.2vw, 22px) 0;
  border-top: 1px solid var(--line);
}

.page-news .series__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-news .series__num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--clay);
  padding-top: 0.4em;
}

.page-news .series__name {
  margin: 0 0 6px;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.5;
  font-weight: 700;
}

.page-news .series__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--stone);
}

/* ---------- 文档更新 ---------- */
.page-news .docs {
  padding: clamp(36px, 5vw, 68px) 0;
  border-top: 1px solid var(--line);
}

.page-news .docs__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 46px);
}

.page-news .docs__aside .annotation {
  display: block;
  margin: 0 0 12px;
}

.page-news .docs__aside h2 {
  margin: 0 0 14px;
  line-height: 1.2;
}

.page-news .docs__lead {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  max-width: 30em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-news .doc-list {
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 28px);
  padding: 0;
}

.page-news .doc-item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 4px 14px;
  padding: clamp(14px, 2vw, 19px) 0;
  border-top: 1px solid var(--line);
}

.page-news .doc-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-news .doc-item__num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--moss);
  padding-top: 0.4em;
}

.page-news .doc-item__title {
  margin: 0 0 4px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
}

.page-news .doc-item__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--stone);
}

.page-news .docs__cta {
  display: inline-block;
}

/* ---------- 反馈 ---------- */
.page-news .feedback {
  margin-top: clamp(24px, 4vw, 44px);
  padding: clamp(32px, 4.6vw, 58px) clamp(18px, 3vw, 42px) clamp(30px, 4vw, 48px);
  background: var(--loess);
  color: var(--ink);
  clip-path: polygon(0 24px, 100% 0, 100% 100%, 0 100%);
}

.page-news .feedback__inner {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-news .feedback h2 {
  margin: 0 0 12px;
  line-height: 1.2;
}

.page-news .feedback__text {
  margin: 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-news .feedback__contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.page-news .feedback__mail {
  margin: 0;
  padding: 10px 16px;
  background: var(--paper);
  border: 1px solid var(--clay);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--ink);
  word-break: break-all;
}

/* ---------- 节点图注带 ---------- */
.page-news .nodes {
  margin-top: clamp(36px, 5vw, 68px);
  background: var(--ink);
  color: var(--paper);
}

.page-news .nodes__grid {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  padding-top: clamp(30px, 4vw, 52px);
  padding-bottom: clamp(30px, 4vw, 52px);
}

.page-news .nodes__figure {
  overflow: hidden;
  border: 1px solid var(--ink-soft);
}

.page-news .nodes__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  opacity: 0.92;
}

.page-news .nodes__body .annotation {
  display: block;
  margin: 0 0 12px;
  color: rgba(245, 239, 230, 0.6);
}

.page-news .nodes__body h2 {
  margin: 0 0 14px;
  line-height: 1.2;
  color: var(--paper);
}

.page-news .nodes__text {
  margin: 0 0 20px;
  max-width: 32em;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(245, 239, 230, 0.82);
}

.page-news .nodes__link {
  display: inline-block;
  padding-bottom: 3px;
  color: var(--cyan);
  font-size: 14.5px;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
}

.page-news .nodes__link:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-news .feedback__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
  }

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

  .page-news .pinned {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-news .pinned__media {
    min-height: 100%;
    border-bottom: 0;
    border-right: 1px solid var(--clay-deep);
  }
}

@media (min-width: 900px) {
  .page-news .topics-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    column-gap: clamp(28px, 4vw, 72px);
  }

  .page-news .board__layout {
    grid-template-columns: 190px minmax(0, 1fr);
    column-gap: clamp(26px, 3.6vw, 58px);
    align-items: start;
  }

  .page-news .board__filters {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }

  .page-news .filter-set {
    flex-direction: column;
    align-items: stretch;
  }

  .page-news .filter-tag {
    justify-content: flex-start;
  }

  .page-news .pinned__title {
    position: sticky;
    top: calc(var(--bar-h) + 18px);
  }

  .page-news .series__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .docs__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .page-news .nodes__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 1180px) {
  .page-news .topics-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-news .topic-item,
  .page-news .topic-item__num,
  .page-news .topic-item__title,
  .page-news .topic-item__more,
  .page-news .filter-tag {
    transition: none;
  }
}