.page-news {
  --news-rail: 242px;
  --news-cut: 14px;
  --news-glow: radial-gradient(circle, rgba(41, 224, 210, .18), transparent 68%);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-news .column-hero {
  position: relative;
  padding: clamp(22px, 5vw, 52px) 0 clamp(20px, 4vw, 44px);
  overflow: hidden;
}

.page-news .column-hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -140px;
  width: 460px;
  height: 460px;
  background: var(--news-glow);
  pointer-events: none;
}

.page-news .column-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line) 18%, var(--line) 82%, transparent);
}

.page-news .column-hero__top {
  position: relative;
  max-width: 760px;
  margin-top: 20px;
}

.page-news .column-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.16;
  font-size: clamp(32px, 7vw, 60px);
  color: var(--white);
}

.page-news .column-hero__lede {
  margin-top: 18px;
  max-width: 62ch;
}

.page-news .column-hero__stats {
  position: relative;
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--news-cut)) 0, 100% var(--news-cut), 100% 100%, 0 100%);
  overflow: hidden;
}

.page-news .column-stat {
  background: var(--deep);
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-news .column-stat__num {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -.01em;
}

.page-news .column-stat__label {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-news .column-hero__media {
  position: relative;
  margin: 32px 0 0;
}

.page-news .column-hero__media .media__caption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 条目索引 ---------- */
.page-news .column-feed__hint {
  max-width: 34ch;
  font-size: 14px;
}

.page-news .column-feed__tabs {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

.page-news .column-feed__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-news .column-tab {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--line);
  background: rgba(20, 58, 102, .35);
  color: var(--mist);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
}

.page-news .column-tab:hover {
  color: var(--white);
  border-color: var(--cyan-soft);
}

.page-news .column-tab[aria-selected="true"] {
  background: var(--navy);
  border-color: var(--cyan);
  color: var(--white);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-news .column-tab:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 2px;
}

.page-news .column-tab__count {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
}

.page-news .column-feed__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-news .column-feed__note a {
  color: var(--cyan-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-news .column-feed__panel[hidden] {
  display: none;
}

.page-news .column-feed__panel:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 6px;
}

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

.page-news .column-item {
  position: relative;
  padding: 20px 0 20px 20px;
  border-bottom: 1px solid var(--line);
}

.page-news .column-item__bar {
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 4px;
  border-radius: 2px;
}

.page-news .column-item__bar--cyan {
  background: linear-gradient(180deg, var(--cyan), var(--cyan-soft));
}

.page-news .column-item__bar--orange {
  background: linear-gradient(180deg, var(--orange), var(--orange-soft));
}

.page-news .column-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
}

.page-news .column-item__time {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-news .column-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.4vw, 20px);
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-news .column-item__excerpt {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 60ch;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.page-news .column-item__more summary {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--cyan);
  cursor: pointer;
  list-style: none;
}

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

.page-news .column-item__more summary::after {
  content: "＋";
  font-size: 12px;
}

.page-news .column-item__more[open] summary::after {
  content: "－";
}

.page-news .column-item__more summary:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 3px;
}

.page-news .column-item__more ul {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-news .column-item__more li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-news .column-item__more li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-news .column-item__more a {
  color: var(--cyan-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 版本线 ---------- */
.page-news .column-versions__hint {
  max-width: 36ch;
  font-size: 14px;
}

.page-news .column-versions__layout {
  display: grid;
  gap: 30px;
  margin-top: 28px;
}

.page-news .column-version-line {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 4px 0 0 30px;
}

.page-news .column-version-line::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 18px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--line) 42%, var(--orange));
}

.page-news .column-version {
  position: relative;
  padding-bottom: 26px;
}

.page-news .column-version:last-child {
  padding-bottom: 0;
}

.page-news .column-version__dot {
  position: absolute;
  left: -30px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(41, 224, 210, .14);
}

.page-news .column-version__dot--orange {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 47, .16);
}

.page-news .column-version__year {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--orange-soft);
}

.page-news .column-version__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.6vw, 22px);
  line-height: 1.4;
  color: var(--white);
}

.page-news .column-version__text {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 52ch;
}

.page-news .column-versions__media {
  margin: 0;
}

.page-news .column-versions__media .media__caption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 使用指南 ---------- */
.page-news .column-guides__hint {
  max-width: 32ch;
  font-size: 14px;
}

.page-news .column-guides__layout {
  display: grid;
  gap: 30px;
  margin-top: 28px;
}

.page-news .column-guides__media {
  margin: 0;
}

.page-news .column-guides__media .media__caption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--mist);
}

.page-news .column-guides__groups {
  display: grid;
  gap: 0;
}

.page-news .column-guide-group {
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

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

.page-news .column-guide-group__title {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-news .column-guide-group__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .column-guide-group__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--white);
}

.page-news .column-guide-group__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 1px;
  background: var(--orange);
}

.page-news .column-guide-group__list a {
  color: var(--cyan-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 专题系列 ---------- */
.page-news .column-topics__head {
  display: grid;
  gap: 24px;
  align-items: end;
}

.page-news .column-topics__lede {
  margin-top: 12px;
  max-width: 52ch;
}

.page-news .column-topics__media {
  margin: 0;
}

.page-news .column-topics__rail {
  display: flex;
  gap: 18px;
  margin-top: 32px;
  padding-bottom: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-news .column-topics__rail:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 4px;
}

.page-news .column-topic-card {
  flex: 0 0 min(320px, 78vw);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 22px 24px;
  background: linear-gradient(160deg, var(--navy), var(--deep));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--news-cut)) 0, 100% var(--news-cut), 100% 100%, 0 100%);
}

.page-news .column-topic-card__time {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--orange-soft);
}

.page-news .column-topic-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.4;
  color: var(--white);
}

.page-news .column-topic-card__text {
  margin: 0;
  flex: 1 1 auto;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-news .column-topic-card__count {
  margin: 4px 0 0;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--cyan);
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

/* ---------- 订阅 ---------- */
.page-news .column-subscribe__panel {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4.5vw, 48px);
  background: linear-gradient(140deg, var(--navy) 0%, var(--abyss) 68%);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
  display: grid;
  gap: 28px;
}

.page-news .column-subscribe__panel::before {
  content: "";
  position: absolute;
  top: -160px;
  right: -120px;
  width: 380px;
  height: 380px;
  background: var(--news-glow);
  pointer-events: none;
}

.page-news .column-subscribe__body {
  position: relative;
  max-width: 60ch;
}

.page-news .column-subscribe__lede {
  margin-top: 14px;
}

.page-news .column-subscribe__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 0;
}

.page-news .column-subscribe__facts {
  position: relative;
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-news .column-subscribe__fact {
  background: rgba(7, 26, 51, .72);
  padding: 14px 16px;
  display: grid;
  gap: 6px;
}

.page-news .column-subscribe__fact dt {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-news .column-subscribe__fact dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-news .column-subscribe__foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-news .column-subscribe__foot a {
  color: var(--cyan-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .column-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .column-guide-group {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

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

@media (min-width: 880px) {
  .page-news .column-feed__tabs {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-news .column-feed__list {
    position: sticky;
    top: 96px;
  }

  .page-news .column-versions__layout {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 48px;
    align-items: start;
  }

  .page-news .column-guides__layout {
    grid-template-columns: 330px minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-news .column-topics__head {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 44px;
  }

  .page-news .column-topic-card {
    flex: 0 0 336px;
  }

  .page-news .column-subscribe__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 44px;
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-news .column-hero__title {
    max-width: 16ch;
  }

  .page-news .column-item {
    padding-right: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .column-tab {
    transition: none;
  }
}