.page-news {
  --news-dot: rgba(20, 224, 208, 0.14);
  --news-fade: rgba(20, 224, 208, 0.08);
}

.page-news .news-hero {
  position: relative;
  overflow: hidden;
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  top: -20%;
  right: -12%;
  width: 46vw;
  height: 46vw;
  max-width: 620px;
  max-height: 620px;
  background: radial-gradient(circle at center, rgba(20, 224, 208, 0.10), transparent 62%);
  pointer-events: none;
}

.page-news .news-hero__inner {
  position: relative;
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-news .news-hero__copy > * + * {
  margin-top: 22px;
}

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

.page-news .news-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 20px;
  margin: 34px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-news .news-stats__item dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
}

.page-news .news-stats__item dd {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 8px 0 0;
}

.page-news .news-stats__unit {
  font-size: 13px;
  color: var(--ink-soft);
}

.page-news .news-hero__media {
  margin: 0;
}

.page-news .news-hero__media img,
.page-news .news-tags__media img,
.page-news .news-versions__media img,
.page-news .news-export__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-news .news-hero__media figcaption,
.page-news .news-tags__media figcaption,
.page-news .news-versions__media figcaption,
.page-news .news-export__media figcaption {
  margin-top: 12px;
}

.page-news .news-section-head {
  max-width: 720px;
}

.page-news .news-section-head .prose {
  margin-top: 16px;
}

/* 时间线 */
.page-news .news-timeline {
  position: relative;
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan-500), var(--news-fade));
}

.page-news .news-timeline__item {
  position: relative;
  padding-left: 34px;
}

.page-news .news-timeline__item + .news-timeline__item {
  margin-top: 42px;
}

.page-news .news-timeline__item::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan-500);
  box-shadow: 0 0 0 4px var(--news-dot);
}

.page-news .news-timeline__marker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan-300);
}

.page-news .news-timeline__title {
  margin: 10px 0 12px;
  font-size: clamp(1.08rem, 1.5vw, 1.4rem);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.page-news .news-timeline__body p {
  max-width: 70ch;
  color: var(--ink-soft);
  line-height: 1.7;
}

.page-news .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.page-news .news-details {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-news .news-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  color: var(--cyan-300);
}

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

.page-news .news-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan-500);
}

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

.page-news .news-details__list {
  margin: 16px 0 0;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-news .news-details__list li + li {
  margin-top: 8px;
}

/* 分类标签 */
.page-news .news-tags__inner {
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-news .news-tags__media {
  margin: 0;
}

.page-news .filter-groups {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.page-news .filter-group {
  display: grid;
  gap: 10px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

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

.page-news .filter-group__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-dim);
  text-transform: uppercase;
}

.page-news .filter-group .tag-row {
  margin-top: 0;
}

/* 版本对比 */
.page-news .news-versions__inner {
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-news .news-version-list {
  display: grid;
  gap: 16px;
  margin-top: 34px;
}

.page-news .news-version {
  padding: 22px 24px;
}

.page-news .news-version__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-news .news-version__no {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan-300);
}

.page-news .news-version__meta {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
}

.page-news .news-version__meta dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
}

.page-news .news-version__meta dd {
  margin: 5px 0 0;
  font-size: 15px;
  color: var(--ink);
}

.page-news .news-version__summary {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-news .news-version .btn {
  margin-top: 18px;
}

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

/* 导出视图 */
.page-news .news-export .export-switch {
  position: relative;
  margin-top: 36px;
}

.page-news .export-switch > input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
  clip-path: inset(50%);
}

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

.page-news .export-switch__labels label {
  display: inline-block;
  padding: 9px 22px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background-color 260ms var(--ease), color 260ms var(--ease), border-color 260ms var(--ease);
}

.page-news .export-switch__labels label:hover {
  border-color: var(--cyan-500);
  color: var(--ink);
}

.page-news #export-csv:checked ~ .export-switch__labels [for="export-csv"],
.page-news #export-json:checked ~ .export-switch__labels [for="export-json"],
.page-news #export-pdf:checked ~ .export-switch__labels [for="export-pdf"] {
  background: var(--cyan-500);
  border-color: var(--cyan-500);
  color: var(--blue-900);
}

.page-news .export-panels {
  margin-top: 24px;
}

.page-news .export-panel {
  display: none;
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan-500);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(20, 224, 208, 0.08), rgba(255, 255, 255, 0.4) 60%);
}

.page-news #export-csv:checked ~ .export-panels .export-panel--csv,
.page-news #export-json:checked ~ .export-panels .export-panel--json,
.page-news #export-pdf:checked ~ .export-panels .export-panel--pdf {
  display: block;
}

.page-news .export-panel__title {
  margin: 0;
  font-size: clamp(1.05rem, 1.4vw, 1.3rem);
  font-weight: 500;
}

.page-news .export-field-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .export-field-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-news .export-field-list li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 10px;
  height: 1px;
  background: var(--cyan-500);
}

.page-news .export-panel__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-dim);
}

.page-news .news-export__media {
  margin: 40px 0 0;
}

/* 订阅与反馈 */
.page-news .news-follow__grid {
  gap: 20px;
  align-items: stretch;
}

.page-news .news-follow__col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  padding: 26px 26px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(20, 224, 208, 0.07), rgba(11, 18, 38, 0.4) 62%);
  box-shadow: var(--shadow-soft);
}

.page-news .news-follow__col .prose {
  font-size: 15px;
  color: var(--ink-soft);
}

.page-news .news-follow__col .btn {
  margin-top: auto;
}

@media (min-width: 760px) {
  .page-news .news-version__meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news .news-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 60px;
  }

  .page-news .news-tags__inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 56px;
  }

  .page-news .news-versions__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 56px;
  }

  .page-news .news-versions__media {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }
}

@media (max-width: 640px) {
  .page-news .news-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-news .news-version {
    padding: 20px 18px;
  }

  .page-news .export-panel {
    padding: 20px 18px;
  }

  .page-news .news-follow__col {
    padding: 22px 18px 24px;
  }

  .page-news .news-timeline__item {
    padding-left: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .export-switch__labels label {
    transition: none;
  }
}