.page-news {
  --news-archive-ink: #5C574B;
  --news-archive-line: #B3AC9C;
  --news-hair: rgba(20, 22, 28, .2);
  background: var(--paper);
}

.page-news .section {
  padding: 48px 0;
}

.page-news .news-hero {
  padding: calc(var(--header-h) + 34px) 0 34px;
  border-bottom: 2px solid var(--ink);
  background:
    linear-gradient(180deg, var(--paper-3) 0%, var(--paper) 78%);
}

.page-news .news-hero .crumbs {
  margin-bottom: 18px;
}

.page-news .news-hero .kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gold-deep);
  text-transform: uppercase;
  margin: 0;
}

.page-news .news-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(30px, 7vw, 58px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--ink);
  margin: 14px 0 18px;
  max-width: 16em;
}

.page-news .news-hero .lead {
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--body);
  max-width: 720px;
  margin: 0;
}

.page-news .hero-jump {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
}

.page-news .hero-jump a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  padding: 8px 13px;
  border: 2px solid var(--ink);
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--soft);
  transition: background .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-news .hero-jump a:hover,
.page-news .hero-jump a:focus-visible {
  background: var(--indigo);
  color: var(--paper);
  box-shadow: 2px 2px 0 var(--ink);
}

.page-news .section-open {
  display: grid;
  gap: 10px;
  margin-bottom: 30px;
}

.page-news .section-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gold-deep);
  margin: 0;
}

.page-news .section-open h2 {
  font-family: var(--font-serif);
  font-size: clamp(25px, 4.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
}

.page-news .section-sub {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--body);
  max-width: 660px;
  margin: 0;
}

/* ---------- 条目流：左分类轴 + 右长列表 ---------- */

.page-news .stream-layout {
  display: grid;
  gap: 22px;
}

.page-news .cat-axis {
  position: relative;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-news .cat-axis::-webkit-scrollbar {
  display: none;
}

.page-news .cat-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
  pointer-events: none;
}

.page-news .cat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 9px 13px;
  border: 2px solid var(--ink);
  background: var(--white);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-news .cat-count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--archive);
}

.page-news .cat-radio:checked + .cat-item {
  background: var(--indigo);
  color: var(--paper);
}

.page-news .cat-radio:checked + .cat-item .cat-count {
  color: var(--gold);
}

.page-news .cat-radio:focus-visible + .cat-item {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-news .entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-news .entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 18px 0;
  border-bottom: 1px solid var(--news-hair);
}

.page-news .entry-top {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-news .entry-no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--indigo);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  border-bottom: 1px dashed var(--news-archive-line);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-news .entry-no:hover,
.page-news .entry-no:focus-visible {
  color: var(--teal-deep);
  border-bottom-color: var(--teal);
}

.page-news .entry-time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--archive);
}

.page-news .entry-main {
  display: grid;
  gap: 7px;
}

.page-news .entry-tag {
  justify-self: start;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .1em;
  padding: 2px 8px;
  border: 1px solid currentColor;
}

.page-news .entry-tag--release { color: var(--indigo); }
.page-news .entry-tag--index { color: var(--teal-deep); }
.page-news .entry-tag--service { color: var(--gold-deep); }
.page-news .entry-tag--archive { color: var(--news-archive-ink); border-style: dashed; }

.page-news .entry-title {
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  margin: 0;
}

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

/* 纯 CSS 分类筛选 */
.page-news:has(#f-release:checked) .entry:not([data-cat="release"]),
.page-news:has(#f-index:checked) .entry:not([data-cat="index"]),
.page-news:has(#f-service:checked) .entry:not([data-cat="service"]),
.page-news:has(#f-archive:checked) .entry:not([data-cat="archive"]) {
  display: none;
}

.page-news .back-to-axis {
  margin: 26px 0 0;
}

.page-news .back-to-axis a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--teal-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--teal);
}

/* ---------- 归档区 ---------- */

.page-news .archive-zone {
  background: var(--paper-2);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.page-news .archive-zone .section-open h2 {
  color: var(--news-archive-ink);
}

.page-news .archive-zone .section-no {
  color: var(--news-archive-ink);
}

.page-news .figure {
  margin: 0;
}

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

.page-news .figure-cap {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--news-archive-ink);
  margin-top: 10px;
}

.page-news .figure-narrow {
  max-width: 520px;
  margin-bottom: 34px;
}

.page-news .volume-span {
  margin-top: 38px;
}

.page-news .volume-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-news .volume {
  border: 2px dashed var(--news-archive-line);
  background: rgba(255, 255, 255, .45);
}

.page-news .volume[open] {
  border-style: solid;
  border-color: var(--ink);
  background: var(--white);
}

.page-news .volume > summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

.page-news .volume > summary::-webkit-details-marker {
  display: none;
}

.page-news .volume-year {
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--news-archive-ink);
  transition: color .2s var(--ease);
}

.page-news .volume[open] .volume-year {
  color: var(--indigo);
}

.page-news .volume-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--news-archive-ink);
}

.page-news .volume-body {
  padding: 14px 18px 18px;
  border-top: 1px dashed var(--news-archive-line);
}

.page-news .volume-body p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--news-archive-ink);
  margin: 0;
}

/* ---------- 索引更新摘要 ---------- */

.page-news .update-grid {
  display: grid;
  gap: 30px;
}

.page-news .update-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-news .update-list li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--news-hair);
}

.page-news .update-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gold-deep);
}

.page-news .update-val {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink);
  font-weight: 600;
}

.page-news .spark {
  display: block;
  width: 100%;
  max-width: 380px;
  height: auto;
  margin-top: 26px;
}

/* ---------- 版本发布记录 ---------- */

.page-news .release-list {
  border-top: 2px solid var(--ink);
}

.page-news .release-row {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--news-hair);
}

.page-news .release-ver {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--indigo);
}

.page-news .release-kind {
  justify-self: start;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--gold-deep);
  border: 1px solid currentColor;
  padding: 2px 8px;
}

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

.page-news .release-link {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--teal-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--teal);
}

/* ---------- 服务通知 ---------- */

.page-news .notice-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--gold);
}

.page-news .notice-item {
  position: relative;
  padding: 16px 0 16px 24px;
}

.page-news .notice-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 24px;
  width: 8px;
  height: 8px;
  background: var(--gold);
}

.page-news .notice-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
  margin: 0 0 6px;
}

.page-news .notice-desc {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--body);
  margin: 0;
  max-width: 700px;
}

/* ---------- 氛围通栏 ---------- */

.page-news .ambient {
  padding-top: 44px;
  padding-bottom: 8px;
}

/* ---------- 专题系列 ---------- */

.page-news .series-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-news .series-item {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--news-hair);
}

.page-news .series-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--teal-deep);
}

.page-news .series-title {
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.35;
  color: var(--ink);
  margin: 0;
}

.page-news .series-desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--body);
  margin: 0;
  max-width: 700px;
}

/* ---------- 订阅与提醒 ---------- */

.page-news .sub-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-news .sub-step {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid var(--news-hair);
}

.page-news .sub-no {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--gold-deep);
}

.page-news .sub-step h3 {
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
  margin: 0;
}

.page-news .sub-step p {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--body);
  margin: 0;
  max-width: 700px;
}

.page-news .subscribe-tail {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--body);
  margin: 28px 0 0;
}

.page-news .subscribe-tail a {
  color: var(--teal-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--teal);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-news .section {
    padding: 64px 0;
  }

  .page-news .entry {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 24px;
    padding: 20px 0;
  }

  .page-news .entry-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 7px;
  }

  .page-news .update-list li {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }

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

  .page-news .sub-step {
    grid-template-columns: 74px minmax(0, 1fr);
    grid-template-areas:
      "no title"
      "no desc";
    column-gap: 22px;
    align-items: start;
  }

  .page-news .sub-no { grid-area: no; }
  .page-news .sub-step h3 { grid-area: title; }
  .page-news .sub-step p { grid-area: desc; }
}

@media (min-width: 860px) {
  .page-news .release-row {
    grid-template-columns: 92px 116px minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 22px;
  }

  .page-news .release-link {
    white-space: nowrap;
  }

  .page-news .series-item {
    grid-template-columns: 130px minmax(0, 1fr);
    grid-template-areas:
      "no title"
      "no desc";
    column-gap: 24px;
    align-items: start;
  }

  .page-news .series-no { grid-area: no; padding-top: 4px; }
  .page-news .series-title { grid-area: title; }
  .page-news .series-desc { grid-area: desc; }
}

@media (min-width: 900px) {
  .page-news .stream-layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-news .cat-axis {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 2px solid var(--ink);
  }

  .page-news .cat-item {
    justify-content: flex-start;
    border-width: 0 0 2px 0;
    border-color: var(--news-hair);
    background: transparent;
    padding: 12px 12px 12px 16px;
    box-shadow: none;
  }

  .page-news .cat-count {
    margin-left: auto;
  }

  .page-news .cat-radio:checked + .cat-item {
    background: transparent;
    color: var(--teal-deep);
    border-bottom-color: var(--teal);
    box-shadow: inset 3px 0 0 var(--teal);
  }

  .page-news .cat-radio:checked + .cat-item .cat-count {
    color: var(--teal-deep);
  }

  .page-news .update-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 52px;
    align-items: start;
  }

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

@media (min-width: 1080px) {
  .page-news .section {
    padding: 80px 0;
  }

  .page-news .news-hero {
    padding: calc(var(--header-h) + 52px) 0 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .hero-jump a,
  .page-news .cat-item,
  .page-news .volume-year,
  .page-news .entry-no {
    transition: none;
  }
}