.page-news {
  background: var(--paper);
  color: var(--ink-900);
}

.page-news .news-shell {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
  box-sizing: border-box;
}

/* ---------- 面包屑 ---------- */
.page-news .news-crumbbar {
  padding-block: 20px 4px;
}
.page-news .news-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink-500);
}
.page-news .news-crumbs .ql-crumbs__link {
  color: var(--steppe-600);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}
.page-news .news-crumbs .ql-crumbs__link:hover,
.page-news .news-crumbs .ql-crumbs__link:focus-visible {
  border-bottom-color: var(--steppe-600);
}
.page-news .news-crumbs__now {
  color: var(--ink-700);
}

/* ---------- 首屏 ---------- */
.page-news .news-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-block: 20px 8px;
}
.page-news .news-intro__title {
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.28;
  margin: 10px 0 16px;
  color: var(--ink-900);
  font-size: clamp(28px, 6.4vw, 46px);
}
.page-news .news-intro__lede {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-700);
  margin: 0 0 14px;
  max-width: 34em;
}
.page-news .news-intro__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-500);
}
.page-news .news-intro__hint .ql-link,
.page-news .news-brief__note a {
  color: var(--steppe-600);
  text-decoration: none;
  border-bottom: 1px solid var(--steppe-100);
}

.page-news .news-brief {
  background: var(--grad-glass), var(--paper);
  border: 1px solid var(--gold-200);
  box-shadow: var(--shadow-1);
  padding: 20px 22px 18px;
  align-self: start;
}
.page-news .news-brief__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--flame-600);
}
.page-news .news-brief__list {
  margin: 0;
  display: grid;
  gap: 0;
}
.page-news .news-brief__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}
.page-news .news-brief__row:last-child {
  border-bottom: 0;
}
.page-news .news-brief__row dt {
  font-size: 14px;
  color: var(--ink-500);
}
.page-news .news-brief__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ink-900);
}
.page-news .news-brief__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-500);
}

/* ---------- 分类与时间纵线 ---------- */
.page-news .news-stream {
  padding-block: 40px 56px;
}
.page-news .news-stream__head {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}
.page-news .news-stream__head .ql-h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -.01em;
  margin: 0;
  font-size: clamp(22px, 4.4vw, 30px);
  color: var(--ink-900);
}
.page-news .news-stream__sub {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-500);
}

.page-news .news-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 22px;
  border-bottom: 1px solid var(--line);
}
.page-news .news-tabs__tab {
  appearance: none;
  background: transparent;
  border: 0;
  padding: 11px 1px;
  position: relative;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-500);
  transition: color var(--dur) var(--ease);
}
.page-news .news-tabs__tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--gold-500);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}
.page-news .news-tabs__tab:hover {
  color: var(--ink-900);
}
.page-news .news-tabs__tab[aria-selected="true"] {
  color: var(--ink-900);
}
.page-news .news-tabs__tab[aria-selected="true"]::after {
  transform: scaleX(1);
}
.page-news .news-tabs__tab:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
}

.page-news .news-panel {
  padding-top: 8px;
}
.page-news .news-panel + .news-panel {
  margin-top: 28px;
}
.page-news .news-panel:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 6px;
}

.page-news .news-group__label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 18px 0 4px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold-500);
}
.page-news .news-group__label::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: var(--line);
}

.page-news .note-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.page-news .note-list::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold-200), var(--line) 55%, var(--line));
}
.page-news .note-item {
  display: grid;
  grid-template-columns: 45px minmax(0, 1fr);
  column-gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.page-news .note-item:last-child {
  border-bottom: 0;
}
.page-news .note-item__idx {
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--ink-500);
  background: var(--paper);
  padding: 5px 0 5px;
  position: relative;
  z-index: 1;
  height: fit-content;
  margin-top: 2px;
}
.page-news .note-item__body {
  min-width: 0;
}
.page-news .note-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 8px;
}
.page-news .news-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .07em;
  padding: 2px 8px;
  border: 1px solid transparent;
  line-height: 1.6;
  white-space: nowrap;
}
.page-news .news-tag--version {
  background: var(--sand);
  border-color: var(--gold-200);
  color: var(--ink-700);
}
.page-news .news-tag--event {
  background: var(--steppe-100);
  color: var(--steppe-600);
}
.page-news .news-tag--notice {
  background: var(--paper);
  border-color: var(--warn-500);
  color: var(--warn-500);
}
.page-news .news-tag--insight {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink-700);
}
.page-news .note-item__time {
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--ink-500);
}
.page-news .note-item__title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -.005em;
  color: var(--ink-900);
  margin: 0 0 8px;
  position: relative;
  transition: color var(--dur) var(--ease);
}
.page-news .note-item__title::before {
  content: "";
  position: absolute;
  left: -11px;
  top: .38em;
  width: 3px;
  height: .95em;
  background: var(--flame-600);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.page-news .note-item:hover .note-item__title::before,
.page-news .note-item:focus-within .note-item__title::before {
  opacity: 1;
}
.page-news .note-item__sum {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-700);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.page-news .note-item__more {
  margin-top: 10px;
}
.page-news .note-item__more > summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--steppe-600);
  padding: 3px 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}
.page-news .note-item__more > summary::-webkit-details-marker {
  display: none;
}
.page-news .note-item__more > summary::after {
  content: "+";
  font-size: 13px;
  line-height: 1;
}
.page-news .note-item__more[open] > summary::after {
  content: "−";
}
.page-news .note-item__more > summary:hover,
.page-news .note-item__more > summary:focus-visible {
  border-bottom-color: var(--steppe-600);
}
.page-news .note-item__more > p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--ink-700);
}
.page-news .note-item__more .ql-link {
  color: var(--steppe-600);
  text-decoration: none;
  border-bottom: 1px solid var(--steppe-100);
}

/* ---------- 专题区 ---------- */
.page-news .news-series {
  background: var(--sand);
  padding-block: 52px 60px;
}
.page-news .news-series__head {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}
.page-news .news-series__head .ql-h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -.01em;
  margin: 0;
  font-size: clamp(22px, 4.4vw, 30px);
  color: var(--ink-900);
}
.page-news .news-series__sub {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-700);
  max-width: 40em;
}
.page-news .news-series__banner {
  margin: 0 0 28px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  overflow: hidden;
}
.page-news .news-series__banner img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  opacity: .9;
}

.page-news .series-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}
.page-news .series-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}
.page-news .series-col__media {
  margin: 0;
  border: 1px solid var(--line-strong);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--steppe-100);
}
.page-news .series-col__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}
.page-news .series-col__tag {
  margin: 0;
  align-self: flex-start;
  background: var(--steppe-100);
  color: var(--steppe-600);
  font-size: 11px;
  letter-spacing: .1em;
  padding: 4px 10px;
}
.page-news .series-col__title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  margin: 0;
  color: var(--ink-900);
}
.page-news .series-col__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--ink-700);
}
.page-news .series-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}
.page-news .series-list li {
  display: flex;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line-strong);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-700);
}
.page-news .series-list__idx {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--gold-500);
  padding-top: 3px;
}
.page-news .series-col__more > summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--flame-600);
  padding: 4px 0;
}
.page-news .series-col__more > summary::-webkit-details-marker {
  display: none;
}
.page-news .series-col__more > summary::after {
  content: "+";
  font-size: 13px;
}
.page-news .series-col__more[open] > summary::after {
  content: "−";
}
.page-news .series-col__more .series-list {
  margin-top: 8px;
}

/* ---------- 回看入口 ---------- */
.page-news .news-backlog {
  padding-block: 56px 44px;
}
.page-news .news-backlog__head {
  display: grid;
  gap: 8px;
  margin-bottom: 24px;
}
.page-news .news-backlog__head .ql-h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -.01em;
  margin: 0;
  font-size: clamp(22px, 4.4vw, 30px);
  color: var(--ink-900);
}
.page-news .news-backlog__sub {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-500);
  max-width: 40em;
}
.page-news .backlog-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-news .backlog-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.page-news .backlog-item:last-child {
  border-bottom: 1px solid var(--line);
}
.page-news .backlog-item__idx {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--gold-500);
}
.page-news .backlog-item__title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--ink-900);
}
.page-news .backlog-item__desc {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-700);
}
.page-news .news-backlog__note {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-500);
  padding-left: 14px;
  border-left: 2px solid var(--gold-200);
}

/* ---------- 合作区 ---------- */
.page-news .news-contribute {
  background: var(--steppe-100);
  padding-block: 52px 56px;
}
.page-news .news-contribute__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}
.page-news .news-contribute__text .ql-eyebrow {
  margin-bottom: 10px;
}
.page-news .news-contribute__text .ql-h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -.01em;
  margin: 0 0 14px;
  font-size: clamp(22px, 4.4vw, 30px);
  color: var(--ink-900);
}
.page-news .news-contribute__lede {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-700);
  max-width: 38em;
}
.page-news .news-contribute__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-news .news-contribute__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-700);
}
.page-news .news-contribute__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 1px;
  background: var(--flame-600);
}
.page-news .news-contribute__cta {
  margin: 0;
}
.page-news .news-contribute__aside {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-1);
  padding: 20px 22px;
  align-self: start;
}
.page-news .news-contribute__aside-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--flame-600);
}
.page-news .news-contribute__aside-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  margin: 0 0 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.page-news .news-contribute__label {
  flex: 0 0 44px;
  color: var(--ink-500);
  font-size: 13px;
}
.page-news .news-contribute__value {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--ink-900);
  word-break: break-word;
}
.page-news .news-contribute__aside-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--ink-500);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .news-intro {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 40px;
    padding-block: 28px 12px;
  }
  .page-news .news-brief {
    margin-top: 48px;
  }
  .page-news .backlog-item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 0 16px;
    align-items: start;
  }
  .page-news .backlog-item__idx {
    padding-top: 6px;
  }
  .page-news .note-item {
    grid-template-columns: 56px minmax(0, 1fr);
    column-gap: 18px;
  }
  .page-news .note-list::before {
    left: 28px;
  }
  .page-news .note-item__title {
    font-size: 19px;
  }
}

@media (min-width: 900px) {
  .page-news .news-stream {
    padding-block: 48px 72px;
  }
  .page-news .series-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
    align-items: start;
  }
  .page-news .series-col--mid {
    margin-top: 34px;
  }
  .page-news .series-col--last {
    margin-top: 68px;
  }
  .page-news .news-contribute__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: start;
  }
  .page-news .news-tabs__list {
    gap: 4px 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-tabs__tab::after,
  .page-news .note-item__title::before,
  .page-news .news-tabs__tab {
    transition: none;
  }
}