/* ===== 更新与公告 ===== */

.page-news .news-hero {
  padding-block: clamp(22px, 4vw, 44px) clamp(40px, 7vw, 76px);
}

.page-news .news-hero__grid {
  display: grid;
  gap: clamp(30px, 5vw, 52px);
  align-items: start;
}

@media (min-width: 900px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 60fr) minmax(0, 40fr);
    gap: clamp(32px, 4.4vw, 64px);
  }
}

.page-news .news-hero__copy {
  max-width: 36em;
  min-width: 0;
}

.page-news .news-hero__title {
  font-size: clamp(30px, 4.6vw, 50px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 14px 0 18px;
  color: var(--text);
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-news .news-hero__visual {
  position: relative;
  min-width: 0;
}

.page-news .news-hero__media {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

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

/* ---- 最新一期悬浮卡片 ---- */

.page-news .news-latest {
  margin-top: 18px;
  padding: 20px 22px 22px;
  border-radius: var(--r-md);
  border-left: 2px solid var(--red);
  box-shadow: var(--shadow-float);
}

@media (min-width: 1024px) {
  .page-news .news-latest {
    margin-top: -62px;
    margin-left: -46px;
    margin-right: 18px;
  }
}

.page-news .news-latest__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--red);
}

.page-news .news-latest__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-news .news-latest__name {
  margin: 8px 0 10px;
  font-size: var(--fs-sm);
  letter-spacing: 0.02em;
  color: var(--blue-soft);
}

.page-news .news-latest__text {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.72;
  color: var(--text-dim);
}

.page-news .news-latest__more {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-news .news-latest__more summary {
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--blue-soft);
}

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

.page-news .news-latest__more summary::after {
  content: " ＋";
  font-family: var(--font-mono);
  color: var(--blue);
}

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

.page-news .news-latest__more summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-news .news-latest__detail p {
  margin: 10px 0 0;
  font-size: var(--fs-xs);
  line-height: 1.72;
  color: var(--text-mute);
}

/* ---- 时间轴 ---- */

.page-news .timeline {
  position: relative;
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
}

.page-news .timeline::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 9px;
  width: 1px;
  background: linear-gradient(180deg, var(--red) 0%, rgba(53, 196, 181, 0.65) 20%, rgba(201, 211, 220, 0.16) 100%);
}

.page-news .timeline__item {
  position: relative;
  padding-left: 40px;
  min-width: 0;
}

.page-news .timeline__item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 9px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--deep);
  border: 1px solid var(--cyan);
  z-index: 1;
}

.page-news .timeline__item--current::before {
  background: var(--red);
  border-color: var(--red);
  box-shadow: 0 0 0 5px rgba(214, 34, 60, 0.16);
}

.page-news .timeline__card {
  max-width: 100%;
  padding: clamp(16px, 2.2vw, 22px) clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(6, 22, 38, 0.5);
  transition: border-color var(--t), background-color var(--t);
}

.page-news .timeline__card:hover {
  border-color: var(--line-strong);
}

@media (min-width: 900px) {
  .page-news .timeline__card {
    max-width: 600px;
  }

  .page-news .timeline__item--current .timeline__card {
    max-width: 730px;
    border-color: rgba(214, 34, 60, 0.4);
    background: linear-gradient(140deg, rgba(143, 16, 36, 0.24), rgba(6, 22, 38, 0.62) 62%);
  }
}

.page-news .timeline__period {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1;
  color: var(--cyan);
}

.page-news .timeline__item--current .timeline__period {
  color: var(--red);
}

.page-news .timeline__title {
  margin: 0 0 8px;
  font-size: var(--fs-base);
  line-height: 1.45;
  color: var(--text);
}

.page-news .timeline__text {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--text-dim);
}

.page-news .timeline__meta {
  margin: 14px 0 0;
}

.page-news .news-back {
  margin: clamp(24px, 3vw, 34px) 0 0;
}

/* ---- 版本迭代 ---- */

.page-news .versions {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
  margin-top: clamp(28px, 4vw, 46px);
}

@media (min-width: 1000px) {
  .page-news .versions {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

.page-news .versions__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .versions__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 18px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

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

.page-news .versions__no {
  grid-column: 1;
  grid-row: 1 / span 2;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--blue-soft);
}

.page-news .versions__name {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-size: var(--fs-base);
  line-height: 1.5;
  color: var(--text);
}

.page-news .versions__text {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-sm);
  line-height: 1.72;
  color: var(--text-dim);
}

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

.page-news .versions__media .media-frame {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.page-news .versions__caption {
  margin: 12px 0 0;
  font-size: var(--fs-xs);
  line-height: 1.7;
  color: var(--text-mute);
}

/* ---- 兼容与适配 ---- */

.page-news .compat {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(28px, 4vw, 46px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-news .compat {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  }
}

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

.page-news .compat__media .media-frame {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-news .compat__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-news .compat__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 22px;
  align-items: baseline;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-news .compat__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-news .compat__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--snow);
  white-space: nowrap;
}

.page-news .compat__unit {
  margin-left: 6px;
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  color: var(--text-mute);
}

.page-news .compat__label {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---- 更新节奏 ---- */

.page-news .rhythm {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(28px, 4vw, 46px);
  align-items: start;
}

@media (min-width: 900px) {
  .page-news .rhythm {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }
}

.page-news .rhythm__list {
  display: grid;
}

.page-news .rhythm__item {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

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

.page-news .rhythm__term {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: var(--fs-base);
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-news .rhythm__term::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 9px rgba(53, 196, 181, 0.75);
}

.page-news .rhythm__desc {
  margin: 0;
  padding-left: 17px;
  max-width: 34em;
  font-size: var(--fs-sm);
  line-height: 1.72;
  color: var(--text-dim);
}

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

.page-news .rhythm__media .media-frame {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

/* ---- 按主题浏览 ---- */

.page-news .segment {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-news .segment__track {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news .segment__btn {
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  letter-spacing: 0.03em;
}

.page-news .segment__panels {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-news .segment__panel:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 6px;
  border-radius: var(--r-sm);
}

.page-news .topics__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .topics__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 20px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-news .topics__item:first-child {
  border-top: 1px solid var(--line);
}

.page-news .topics__time {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  white-space: nowrap;
  color: var(--slate);
}

.page-news .topics__text {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.72;
  color: var(--slate);
}

.page-news .topics__foot {
  margin: clamp(24px, 3vw, 34px) 0 0;
  max-width: 40em;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--slate);
}

.page-news .topics__foot a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 123, 214, 0.45);
}

.page-news .topics__foot a:hover {
  border-bottom-color: var(--blue);
}

@media (max-width: 560px) {
  .page-news .timeline__item {
    padding-left: 34px;
  }

  .page-news .topics__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-news .compat__row {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 4px 16px;
  }

  .page-news .versions__item {
    gap: 6px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-hero__media,
  .page-news .news-latest,
  .page-news .timeline__card,
  .page-news .versions__media .media-frame,
  .page-news .compat__media .media-frame,
  .page-news .rhythm__media .media-frame {
    transition: none;
  }
}