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

/* ---------- 面包屑 ---------- */
.page-news .news-crumbs {
  padding-top: 22px;
  font-size: 12px;
}
.page-news .news-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--slate);
  letter-spacing: 0.06em;
}
.page-news .news-crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--frost);
}
.page-news .news-crumbs a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-news .news-crumbs a:hover,
.page-news .news-crumbs a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: 24px 0 40px;
  background: linear-gradient(165deg, var(--mist-a) 0%, var(--paper) 56%, var(--paper-2) 100%);
  border-bottom: 1px solid var(--frost);
  overflow: hidden;
}
.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red) 0 24%, var(--blue) 24% 60%, var(--green) 60% 100%);
}
.page-news .news-hero__grid {
  max-width: 64ch;
}
.page-news .news-hero h1 {
  margin: 14px 0 18px;
  font-size: 32px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 900;
  color: var(--ink);
}
.page-news .news-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
  list-style: none;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--frost);
  font-size: 13px;
  color: var(--slate);
}
.page-news .news-hero__stats li {
  display: flex;
  align-items: baseline;
}
.page-news .news-hero__stats .num {
  margin-right: 7px;
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
}
.page-news .news-hero__fig {
  margin: 30px 0 0;
}
.page-news .news-hero__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--frost);
  border-radius: var(--radius);
  box-shadow: var(--shadow-2);
}
.page-news .news-hero__fig figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

/* ---------- 主体双栏 ---------- */
.page-news .news-body {
  display: grid;
  gap: 30px;
  padding-top: 44px;
  padding-bottom: 48px;
}
.page-news .news-rail__cap {
  margin-bottom: 12px;
}
.page-news .news-filter {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
}
.page-news .news-filter .filter-btn {
  flex: 0 0 auto;
  white-space: nowrap;
}
.page-news .news-filter .filter-btn[data-filter="版本日志"].is-active {
  border-color: var(--blue);
  color: var(--blue);
}
.page-news .news-filter .filter-btn[data-filter="数据整理笔记"].is-active {
  border-color: var(--green-deep);
  color: var(--green-deep);
}
.page-news .news-filter .filter-btn[data-filter="资源更新"].is-active {
  border-color: var(--amber);
  color: var(--amber);
}
.page-news .news-filter .filter-btn[data-filter="术语解读"].is-active {
  border-color: var(--red);
  color: var(--red);
}
.page-news .news-rail__hint {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 条目流 ---------- */
.page-news .news-stream__title {
  margin: 0 0 10px;
}
.page-news .news-stream__lead {
  margin: 0 0 26px;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.7;
}
.page-news .news-stream__list {
  display: flex;
  flex-direction: column;
}
.page-news [data-filter-item][hidden] {
  display: none;
}

.page-news .news-card {
  margin-bottom: 18px;
  padding: 18px 20px 16px;
  background: var(--white);
  border: 1px solid var(--frost);
  border-left: 3px solid var(--blue);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}
.page-news .news-card:nth-child(4n+3) {
  border-left-color: var(--green);
}
.page-news .news-card:nth-child(4n+2) {
  border-left-color: var(--red);
}
.page-news .news-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}
.page-news .news-card__time {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate);
}
.page-news .news-card__title {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--ink);
}
.page-news .news-card__sum {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}
.page-news .news-card__more {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--frost);
}
.page-news .news-card__more summary {
  cursor: pointer;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--blue);
  text-transform: uppercase;
}
.page-news .news-card__more summary::-webkit-details-marker {
  display: none;
}
.page-news .news-card__more summary::before {
  content: "+ ";
  font-family: var(--mono);
}
.page-news .news-card__more[open] summary::before {
  content: "− ";
}
.page-news .news-card__more summary:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}
.page-news .news-card__more p {
  margin: 10px 0 2px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
}

/* 版本时间轴横条 */
.page-news .news-tl {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 6px 0 24px;
  padding: 12px 16px;
  border-radius: var(--radius);
  background: linear-gradient(90deg, var(--blue) 0%, var(--blue) 38%, var(--green) 100%);
  color: var(--white);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.page-news .news-tl__ver {
  flex: 0 0 auto;
  padding: 2px 8px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: var(--radius);
  font-weight: 700;
}
.page-news .news-tl__line {
  flex: 1 1 auto;
  height: 1px;
  background: rgba(255, 255, 255, 0.5);
}
.page-news .news-tl__copy {
  flex: 0 1 auto;
  text-align: right;
}

/* ---------- 通用区块 ---------- */
.page-news .news-block {
  padding: 52px 0;
  border-top: 1px solid var(--frost);
}
.page-news .news-block--mist {
  background: linear-gradient(180deg, var(--mist-a) 0%, var(--paper) 100%);
}
.page-news .news-block__head {
  max-width: 52ch;
  margin-bottom: 30px;
}
.page-news .news-block__head h2 {
  margin: 12px 0 14px;
  font-weight: 900;
  letter-spacing: -0.01em;
}
.page-news .news-block__fig {
  margin: 0 0 30px;
}
.page-news .news-block__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--frost);
  border-radius: var(--radius);
}
.page-news .news-block__fig figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}
.page-news .news-block__foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}
.page-news .news-block__foot a {
  color: var(--blue);
  border-bottom: 1px solid var(--frost);
  text-decoration: none;
}
.page-news .news-block__foot a:hover,
.page-news .news-block__foot a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

/* ---------- 版本日志表格 ---------- */
.page-news .news-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--frost);
  border-radius: var(--radius);
  background: var(--white);
}
.page-news .news-table-cap {
  padding: 14px 16px 0;
  text-align: left;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate);
}
.page-news .news-table-wrap .data-table {
  min-width: 620px;
  width: 100%;
}
.page-news .news-table-wrap .data-table td:first-child .num {
  font-weight: 700;
  color: var(--blue);
}

/* ---------- 数据整理笔记 ---------- */
.page-news .news-notes {
  display: grid;
  gap: 26px;
}
.page-news .news-notes__fig {
  margin: 0;
}
.page-news .news-notes__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--frost);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}
.page-news .news-notes__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: note;
}
.page-news .news-notes__list li {
  position: relative;
  padding: 0 0 22px 44px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--frost);
  counter-increment: note;
}
.page-news .news-notes__list li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}
.page-news .news-notes__list li::before {
  content: counter(note, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--green);
  opacity: 0.75;
}
.page-news .news-notes__list h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}
.page-news .news-notes__list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 资源更新 ---------- */
.page-news .news-resource {
  display: grid;
  gap: 28px;
}
.page-news .news-resource__copy h2 {
  margin: 12px 0 14px;
  font-weight: 900;
  letter-spacing: -0.01em;
}
.page-news .news-resource__list {
  list-style: none;
  margin: 22px 0;
  padding: 0;
}
.page-news .news-resource__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px solid var(--frost);
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-2);
}
.page-news .news-resource__list li:first-child {
  border-top: 1px solid var(--frost);
}
.page-news .news-resource__list .status-dot {
  margin-top: 7px;
  flex: 0 0 auto;
}
.page-news .news-resource__fig {
  margin: 0;
  align-self: start;
}
.page-news .news-resource__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--frost);
  border-radius: var(--radius);
  box-shadow: var(--shadow-2);
}
.page-news .news-resource__fig figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

/* ---------- 术语解读 ---------- */
.page-news .news-terms {
  display: grid;
  gap: 2px;
  margin: 0;
  border-top: 1px solid var(--frost);
}
.page-news .news-terms__item {
  padding: 18px 0;
  border-bottom: 1px solid var(--frost);
}
.page-news .news-terms__item dt {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}
.page-news .news-terms__item dt::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 9px;
  background: var(--red);
  transform: rotate(45deg);
}
.page-news .news-terms__item dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 更新频率与反馈 ---------- */
.page-news .news-block--cadence {
  background: linear-gradient(180deg, var(--paper-2) 0%, var(--paper) 100%);
  border-bottom: 1px solid var(--frost);
}
.page-news .news-cadence {
  display: grid;
  gap: 30px;
}
.page-news .news-cadence__main h2 {
  margin: 12px 0 14px;
  font-weight: 900;
  letter-spacing: -0.01em;
}
.page-news .news-cadence__main p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}
.page-news .news-cadence__side {
  padding: 22px 22px 20px;
  background: var(--white);
  border: 1px solid var(--frost);
  border-top: 3px solid var(--red);
  border-radius: var(--radius);
  box-shadow: var(--shadow-2);
}
.page-news .news-cadence__cap {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}
.page-news .news-cadence__contact {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}
.page-news .news-cadence__contact li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 0;
  border-bottom: 1px solid var(--frost);
}
.page-news .news-cadence__contact li:last-child {
  border-bottom: 0;
}
.page-news .news-cadence__label {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}
.page-news .news-cadence__value {
  font-size: 14px;
  color: var(--ink);
  word-break: break-word;
}
.page-news .news-cadence__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .news-hero {
    padding-top: 30px;
  }
  .page-news .news-hero h1 {
    font-size: 38px;
  }
  .page-news .news-notes {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: 36px;
    align-items: start;
  }
  .page-news .news-terms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 36px;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero {
    padding: 40px 0 52px;
  }
  .page-news .news-hero h1 {
    font-size: 46px;
  }
  .page-news .news-body {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 52px;
    padding-top: 56px;
    padding-bottom: 60px;
  }
  .page-news .news-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-news .news-filter {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-news .news-filter .filter-btn {
    width: 100%;
    text-align: left;
  }
  .page-news .news-card:nth-child(4n+1) {
    margin-inline-end: 13%;
  }
  .page-news .news-card:nth-child(4n+2) {
    margin-inline: 6.5%;
  }
  .page-news .news-card:nth-child(4n+3) {
    margin-inline-start: 13%;
  }
  .page-news .news-card__title {
    font-size: 18px;
  }
  .page-news .news-resource {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 44px;
    align-items: start;
  }
  .page-news .news-cadence {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: start;
  }
  .page-news .news-block {
    padding: 64px 0;
  }
}

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