.page-news {
  display: block;
}

.page-news img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-news .media-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-1);
}

/* ---------- 首屏海报 ---------- */
.page-news .news-hero {
  padding: clamp(20px, 4vw, 46px) 0 clamp(26px, 4vw, 54px);
}

.page-news .news-hero__title {
  margin: 10px 0 16px;
  font-size: clamp(30px, 6.6vw, 74px);
  font-style: italic;
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
  text-shadow: 0 0 18px rgba(53, 242, 224, 0.25);
}

.page-news .news-hero__slash {
  color: var(--cyan);
  padding: 0 0.18em;
}

.page-news .news-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

.page-news .news-hero__index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 24px 0 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--line);
}

.page-news .news-hero__index a {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--white);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line);
}

.page-news .news-hero__index a:hover,
.page-news .news-hero__index a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-news .news-hero__meta {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-news .hero-stat {
  padding: 15px 18px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news .hero-stat__num {
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 800;
  line-height: 1;
  color: var(--gold);
}

.page-news .hero-stat__unit {
  font-size: 0.5em;
  margin-left: 2px;
  color: var(--muted);
}

.page-news .hero-stat__label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 迭代摘要 ---------- */
.page-news .digest-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-news .digest-item {
  position: relative;
  padding: 18px 18px 18px 22px;
  background: var(--ink-1);
  border: 1px solid var(--line);
}

.page-news .digest-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 44px;
  background: var(--cyan);
}

.page-news .digest-item:nth-child(2n)::before {
  background: var(--violet);
}

.page-news .digest-item__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.page-news .digest-item__ver {
  font-size: 16px;
  font-weight: 800;
  color: var(--gold);
}

.page-news .digest-item__title {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--white);
}

.page-news .digest-item__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 筛选条 ---------- */
.page-news .filter-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news .filter-strip .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .filter-chip {
  font: inherit;
  font-size: 13px;
  letter-spacing: 0.05em;
  padding: 8px 14px;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-news .filter-chip:hover {
  color: var(--white);
  border-color: var(--cyan);
}

.page-news .filter-chip[aria-pressed="true"] {
  color: var(--ink-0);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-news .filter-chip:focus-visible,
.page-news .filter-input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .filter-input {
  font: inherit;
  font-size: 14px;
  width: 100%;
  padding: 9px 12px;
  color: var(--white);
  background: var(--ink-1);
  border: 1px solid var(--line);
}

.page-news .filter-input::placeholder {
  color: var(--muted);
}

.page-news .filter-empty {
  margin: 0 auto;
  padding: 16px 18px;
  border: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 时间轴 ---------- */
.page-news .tl-figure {
  margin: 0 0 28px;
}

.page-news .tl-groups {
  display: grid;
  gap: 28px;
}

.page-news .tl-group__title {
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-news .tl-node {
  margin-bottom: 10px;
  background: var(--ink-1);
  border: 1px solid var(--line);
  transition: border-color 200ms ease;
}

.page-news .tl-node[open] {
  border-color: rgba(53, 242, 224, 0.55);
}

.page-news .tl-node > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .tl-node > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-news .tl-node__ver {
  font-size: 18px;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-news .tl-node__title {
  flex: 1 1 200px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--white);
}

.page-news .tl-node__body {
  padding: 0 16px 18px;
  border-top: 1px solid var(--line);
}

.page-news .tl-node__body p {
  margin: 13px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 66ch;
}

.page-news .tl-meta {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
}

.page-news .tl-meta__row {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.page-news .tl-meta dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-news .tl-meta dd {
  margin: 0;
  font-size: 14px;
  color: var(--white);
}

/* ---------- 目录调整日志 ---------- */
.page-news .log-figure {
  margin: 0 0 26px;
}

.page-news .log-list {
  display: grid;
}

.page-news .log-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

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

.page-news .log-item__kind {
  margin: 0 0 10px;
}

.page-news .log-item__title {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.4;
  color: var(--white);
}

.page-news .log-item__text {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-news .log-item__side {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.page-news .log-side__label {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-news .log-side__value {
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--white);
}

.page-news .log-side__value.num {
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold);
}

/* ---------- 专题系列 ---------- */
.page-news .series-figure {
  margin: 0 0 22px;
}

.page-news .series-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-news .series-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--ink-1);
  border: 1px solid var(--line);
}

.page-news .series-card__cadence {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-news .series-card__title {
  margin: 0;
  font-size: 17px;
  line-height: 1.4;
  color: var(--white);
}

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

.page-news .series-card__link {
  align-self: flex-start;
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(53, 242, 224, 0.4);
}

.page-news .series-card__link:hover,
.page-news .series-card__link:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 版本对照 ---------- */
.page-news .cmp-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-news .cmp-media {
  margin: 0;
}

.page-news .cmp-panels {
  display: grid;
  gap: 16px;
}

.page-news .cmp-panels .segmented {
  display: flex;
  flex-wrap: wrap;
  border: 1px solid var(--line);
}

.page-news .cmp-panels .segmented-btn {
  font: inherit;
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 10px 18px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-right: 1px solid var(--line);
  cursor: pointer;
}

.page-news .cmp-panels .segmented-btn[aria-selected="true"] {
  color: var(--white);
  background: rgba(139, 92, 255, 0.24);
}

.page-news .cmp-panels .segmented-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-news .table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
}

.page-news .data-table {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-news .data-table th,
.page-news .data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.page-news .data-table th {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-news .data-table td {
  color: var(--white);
}

.page-news .data-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-news .data-table td.num {
  color: var(--gold);
}

.page-news .cmp-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .cmp-note .num {
  color: var(--gold);
}

/* ---------- 订阅与回访 ---------- */
.page-news .sub-box {
  position: relative;
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(139, 92, 255, 0.2), rgba(53, 242, 224, 0.08) 55%, rgba(11, 16, 48, 0) 100%);
}

.page-news .sub-box h2 {
  margin: 0 0 14px;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.3;
  color: var(--white);
}

.page-news .sub-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 74ch;
}

.page-news .sub-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-news .sub-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-news .sub-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 0;
}

.page-news .sub-note {
  margin: 18px 0 0;
  font-size: 12px;
  line-height: 1.75;
  color: var(--muted);
}

.page-news .sub-note .num {
  color: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .news-hero__meta {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news .digest-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 760px) {
  .page-news .series-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 800px) {
  .page-news .log-item {
    grid-template-columns: minmax(0, 1fr) 190px;
    gap: 30px;
  }
}

@media (min-width: 900px) {
  .page-news .filter-strip {
    position: sticky;
    top: 88px;
    z-index: 5;
    background: rgba(11, 16, 48, 0.94);
    backdrop-filter: blur(6px);
  }

  .page-news .filter-input {
    width: 300px;
  }
}

@media (min-width: 1000px) {
  .page-news .cmp-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
    gap: 32px;
  }

  .page-news .cmp-media {
    position: sticky;
    top: 150px;
  }
}

@media (min-width: 1080px) {
  .page-news .digest-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .filter-chip,
  .page-news .tl-node,
  .page-news .series-card__link {
    transition: none;
  }
}