.page-news {
  background: var(--paper);
  color: var(--ink);
  padding-bottom: 64px;
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  background: var(--teal);
  color: var(--on-dark);
  padding: 18px 0 40px;
  position: relative;
  overflow: hidden;
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(169, 123, 51, .5);
  transform: rotate(24deg);
  pointer-events: none;
}

.page-news .news-hero .breadcrumb {
  color: var(--on-dark-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-news .news-hero .breadcrumb a {
  color: var(--copper-soft);
  text-decoration: none;
}

.page-news .news-hero .breadcrumb a:hover {
  text-decoration: underline;
}

.page-news .news-hero__inner {
  display: grid;
  gap: 28px;
  margin-top: 26px;
}

.page-news .news-hero .eyebrow {
  color: var(--copper-soft);
}

.page-news .news-hero h1 {
  color: var(--paper);
  margin: 10px 0 16px;
  letter-spacing: -0.02em;
  max-width: 16em;
}

.page-news .news-hero .lede {
  color: var(--on-dark);
  max-width: 44em;
  margin: 0;
}

.page-news .news-hero__facts {
  margin: 0;
  border-top: 1px solid rgba(233, 227, 214, .28);
}

.page-news .news-hero__fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(233, 227, 214, .18);
}

.page-news .news-hero__fact dt {
  color: var(--copper-soft);
  font-size: 12px;
  letter-spacing: .08em;
  white-space: nowrap;
}

.page-news .news-hero__fact dd {
  margin: 0;
  font-size: 14px;
  text-align: right;
  color: var(--on-dark);
}

/* ---------- 分屏骨架 ---------- */

.page-news .split {
  display: grid;
  gap: 30px;
  margin-top: 36px;
}

.page-news .rail-sticky {
  display: block;
}

.page-news .rail-nav__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--copper);
}

.page-news .rail-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
}

.page-news .rail-nav__item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper-2);
  border: 1px solid var(--grid);
  border-radius: 0 10px 0 10px;
  font-size: 14px;
  line-height: 1.3;
  transition: background var(--speed), color var(--speed);
}

.page-news .rail-nav__item:hover,
.page-news .rail-nav__item:focus-visible {
  background: #ffffff;
  color: var(--vermilion-dark);
}

.page-news .rail-nav__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--copper);
}

.page-news .rail-nav__label {
  font-size: 14px;
}

.page-news .rail-nav__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 章节 ---------- */

.page-news .section {
  padding: 38px 0 10px;
  border-top: 1px solid var(--grid);
}

.page-news .section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-news .section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 14px;
}

.page-news .section-head__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--copper);
}

.page-news .section-head h2 {
  margin: 0;
  font-size: 26px;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-news .copy {
  max-width: 46em;
}

.page-news .copy a {
  color: var(--vermilion-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 条目列表 ---------- */

.page-news .entry-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--grid);
}

.page-news .entry {
  display: grid;
  gap: 10px;
  padding: 20px 0;
  border-bottom: 1px solid var(--grid);
}

.page-news .entry__tag {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  align-self: start;
  padding: 5px 12px 5px 10px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--paper);
  background: var(--teal);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  white-space: nowrap;
}

.page-news .entry__tag--wine {
  background: var(--wine);
}

.page-news .entry__tag--indigo {
  background: var(--indigo);
}

.page-news .entry__tag--teal {
  background: var(--teal);
}

.page-news .entry__tag--vermilion {
  background: var(--vermilion-dark);
}

.page-news .entry__body {
  min-width: 0;
}

.page-news .entry__title {
  margin: 0 0 4px;
  font-size: 18px;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .entry__time {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink-soft);
}

.page-news .entry__more {
  margin-top: 10px;
}

.page-news .entry__more summary {
  cursor: pointer;
  display: inline-block;
  list-style: none;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--vermilion-dark);
  border-bottom: 1px dashed var(--grid);
  padding-bottom: 2px;
}

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

.page-news .entry__more summary::before {
  content: "＋ ";
  font-family: var(--font-mono);
  color: var(--copper);
}

.page-news .entry__more[open] summary::before {
  content: "－ ";
}

.page-news .entry__more p {
  margin: 12px 0 0;
  padding: 14px 16px;
  background: var(--paper-2);
  border-left: 3px solid var(--copper);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-news .entry__more a {
  color: var(--vermilion-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 媒体框 ---------- */

.page-news .media-frame {
  margin: 22px 0 24px;
  padding: 10px;
  background: var(--paper-2);
  border: 1px solid var(--grid);
  border-radius: 0 16px 0 16px;
}

.page-news .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 0 10px 0 10px;
  background: var(--grid);
}

.page-news .media-frame__caption {
  margin: 10px 2px 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 季度回顾 ---------- */

.page-news .quarter-grid {
  display: grid;
  gap: 0;
  margin: 24px 0 20px;
  border-top: 1px solid var(--grid);
}

.page-news .quarter-cell {
  padding: 18px 0;
  border-bottom: 1px solid var(--grid);
}

.page-news .quarter-cell__num {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--wine);
}

.page-news .quarter-cell__num::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 2px;
  margin-right: 8px;
  vertical-align: middle;
  background: var(--copper);
}

.page-news .quarter-cell p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 版本日志 ---------- */

.page-news .changelog {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-news .changelog__item {
  display: grid;
  gap: 6px;
  padding: 22px 0;
  border-top: 1px solid var(--grid);
}

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

.page-news .changelog__ver {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--vermilion);
}

.page-news .changelog__when {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--copper);
}

.page-news .changelog__body p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-news .changelog__fields {
  list-style: none;
  margin: 0;
  padding: 12px 16px;
  background: var(--indigo);
  border-radius: 0 14px 0 14px;
}

.page-news .changelog__fields li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 7px 0;
  font-size: 14px;
  color: var(--on-dark);
  border-bottom: 1px dashed rgba(233, 227, 214, .22);
}

.page-news .changelog__fields li:last-child {
  border-bottom: 0;
}

.page-news .changelog__fields li > span:first-child {
  color: var(--copper-soft);
  letter-spacing: .04em;
  white-space: nowrap;
}

.page-news .changelog__fields .num {
  text-align: right;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 专题 ---------- */

.page-news .topic-grid {
  display: grid;
  gap: 14px;
  margin-top: 8px;
}

.page-news .topic-card {
  display: block;
  padding: 20px 20px 22px;
  background: var(--paper-2);
  border: 1px solid var(--grid);
  border-top: 3px solid var(--vermilion);
  border-radius: 0 16px 0 16px;
  text-decoration: none;
  color: inherit;
  transition: background var(--speed), border-color var(--speed);
}

.page-news .topic-card:hover,
.page-news .topic-card:focus-visible {
  background: #ffffff;
  border-color: var(--copper);
}

.page-news .topic-card__region {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--copper);
}

.page-news .topic-card__title {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .topic-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 比对记录 ---------- */

.page-news .check-layout {
  display: grid;
  gap: 8px;
  margin-top: 6px;
}

.page-news .check-copy .copy {
  margin-top: 0;
}

.page-news .check-stat {
  margin-top: 22px;
  padding: 18px 20px;
  background: var(--wine);
  border-radius: 0 16px 0 16px;
}

.page-news .check-stat__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-news .check-stat__label {
  margin: 6px 0 0;
  font-size: 13px;
  letter-spacing: .06em;
  color: rgba(233, 227, 214, .82);
}

/* ---------- 跟进与反馈 ---------- */

.page-news .follow-grid {
  display: grid;
  gap: 14px;
  margin-top: 8px;
}

.page-news .follow-card {
  padding: 20px 20px 22px;
  background: var(--paper-2);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--teal);
  border-radius: 0 14px 0 14px;
}

.page-news .follow-card .panel__label {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--teal);
}

.page-news .follow-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-news .follow-card a {
  color: var(--vermilion-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-news .news-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 26px;
  padding: 22px 24px;
  background: var(--indigo);
  border-radius: 0 18px 0 18px;
}

.page-news .news-cta p {
  margin: 0;
  font-size: 15px;
  color: var(--on-dark);
}

.page-news .news-cta .btn {
  flex: 0 0 auto;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-news .entry {
    grid-template-columns: 116px minmax(0, 1fr);
    align-items: start;
    gap: 4px 20px;
  }

  .page-news .entry__tag {
    grid-row: 1 / span 1;
  }

  .page-news .quarter-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

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

@media (min-width: 720px) {
  .page-news .changelog__item {
    grid-template-columns: 92px 150px minmax(0, 1fr);
    gap: 4px 20px;
    align-items: start;
  }

  .page-news .changelog__when {
    padding-top: 5px;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero {
    padding: 22px 0 56px;
  }

  .page-news .news-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(260px, 1fr);
    align-items: end;
    gap: 56px;
    margin-top: 34px;
  }

  .page-news .section {
    padding-top: 46px;
  }

  .page-news .section-head h2 {
    font-size: 30px;
  }

  .page-news .check-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    gap: 34px;
    align-items: start;
  }

  .page-news .media-frame {
    margin-top: 24px;
  }
}

@media (min-width: 1000px) {
  .page-news .split {
    grid-template-columns: minmax(210px, 22%) minmax(0, 1fr);
    gap: 44px;
    margin-top: 44px;
    align-items: start;
  }

  .page-news .split__rail {
    position: sticky;
    top: 92px;
    align-self: start;
    background: var(--teal);
    color: var(--on-dark);
    padding: 26px 22px 30px;
    border-radius: 0 var(--cut) 0 var(--cut);
  }

  .page-news .split__rail .rail-nav__title {
    color: var(--copper-soft);
  }

  .page-news .split__rail .rail-nav {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-news .split__rail .rail-nav__item {
    background: transparent;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 9px 10px;
    color: var(--on-dark);
    font-size: 14px;
  }

  .page-news .split__rail .rail-nav__item:hover,
  .page-news .split__rail .rail-nav__item:focus-visible {
    background: rgba(233, 227, 214, .08);
    color: var(--paper);
  }

  .page-news .split__rail .rail-nav__item[aria-current="true"] {
    border-left-color: var(--copper);
    background: rgba(233, 227, 214, .1);
    color: var(--paper);
  }

  .page-news .split__rail .rail-nav__num {
    color: var(--copper-soft);
  }

  .page-news .split__rail .rail-nav__item[aria-current="true"] .rail-nav__num {
    color: var(--vermilion);
  }

  .page-news .split__rail .rail-nav__note {
    color: rgba(233, 227, 214, .68);
    border-top: 1px solid rgba(233, 227, 214, .2);
    padding-top: 14px;
  }

  .page-news .section:first-child {
    padding-top: 0;
  }
}

@media (min-width: 1180px) {
  .page-news .quarter-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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