/* ============ page-news ============ */

.page-news {
  display: block;
  background: var(--void);
  color: var(--text-1);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  padding-top: clamp(20px, 4vw, 44px);
  padding-bottom: clamp(28px, 5vw, 56px);
}

.page-news .news-hero__title {
  margin: 14px 0 0;
  max-width: 20ch;
}

.page-news .news-hero__lede {
  margin-top: clamp(16px, 2.4vw, 24px);
  max-width: 62ch;
  color: var(--text-2);
}

.page-news .news-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  margin: clamp(24px, 3.6vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  min-width: 96px;
}

.page-news .news-hero__k {
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--text-3);
  text-transform: uppercase;
}

.page-news .news-hero__v {
  font-size: 0.9rem;
  color: var(--gold);
  letter-spacing: 0.05em;
}

.page-news .news-hero__band {
  position: relative;
  margin: clamp(26px, 4.4vw, 48px) 0 0;
  border: 1px solid var(--line);
  background: var(--void-deep);
}

.page-news .news-hero__band img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
  object-position: center;
  opacity: 0.52;
}

.page-news .news-hero__band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
      rgba(11, 16, 32, 0.94) 0%,
      rgba(11, 16, 32, 0.35) 52%,
      rgba(11, 16, 32, 0.9) 100%);
  pointer-events: none;
}

.page-news .news-hero__band .media-frame__caption {
  position: relative;
  z-index: 1;
}

/* ---------- 筛选轨道 ---------- */

.page-news .filter-rail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: clamp(22px, 3vw, 34px) 0 clamp(18px, 2.4vw, 26px);
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news .filter-rail__k {
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--text-3);
  text-transform: uppercase;
  margin-right: 2px;
}

.page-news .filter-rail__k--gap {
  margin-left: clamp(6px, 1.6vw, 20px);
}

.page-news .filter-chip {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: var(--capsule);
  background: transparent;
  color: var(--text-2);
  padding: 5px 14px;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.page-news .filter-chip:hover,
.page-news .filter-chip:focus-visible {
  color: var(--text-1);
  border-color: var(--line-strong);
}

.page-news .filter-chip[aria-pressed="true"],
.page-news .filter-chip[data-active] {
  color: var(--gold);
  border-color: var(--gold);
  background: rgba(217, 164, 65, 0.08);
}

.page-news .filter-count {
  margin-left: auto;
  font-size: 0.72rem;
  color: var(--cyan);
  letter-spacing: 0.05em;
}

/* ---------- 记录条列 ---------- */

.page-news .log-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.page-news .log-row {
  position: relative;
  border-bottom: 1px solid var(--line);
  transition: background var(--dur) var(--ease);
}

.page-news .log-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--dur) var(--ease);
}

.page-news .log-row:hover::before,
.page-news .log-row:focus-within::before {
  transform: scaleY(1);
}

.page-news .log-row:hover {
  background: rgba(75, 63, 191, 0.09);
}

.page-news .log-row[data-filtered-out] {
  display: none;
}

.page-news .log-row__trigger {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 14px;
  width: 100%;
  padding: 18px 10px 18px 18px;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-news .log-row__ver {
  grid-column: 1;
  grid-row: 1;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-news .log-row__time {
  grid-column: 2;
  grid-row: 1;
  text-align: right;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
}

.page-news .log-row__topic {
  grid-column: 1 / -1;
  grid-row: 2;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1rem, 2.4vw, 1.16rem);
  line-height: 1.45;
  color: var(--text-1);
}

.page-news .log-row__scope {
  grid-column: 1 / -1;
  grid-row: 3;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--violet-soft);
}

.page-news .log-row__icon {
  display: none;
}

.page-news .log-row__icon::before {
  content: "+";
  font-size: 1rem;
  color: var(--violet-soft);
  transition: color var(--dur) var(--ease);
}

.page-news .log-row:hover .log-row__icon::before {
  color: var(--cyan);
}

.page-news .log-row__panel {
  display: block;
  padding: 0 16px 22px 18px;
  border-left: 2px solid transparent;
}

.has-js .page-news .log-row__panel {
  display: none;
}

.has-js .page-news .log-row__panel[data-open] {
  display: block;
}

.page-news .log-row__panel-in {
  padding: 14px 0 0 16px;
  border-top: 1px dashed var(--line);
}

.page-news .log-row__panel-in p {
  margin: 0;
  max-width: 74ch;
  font-family: var(--font-body);
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--text-2);
}

.page-news .log-row__impact {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-3);
}

.page-news .log-row__impact a {
  color: var(--violet-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-news .log-row__impact a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 专题系列 ---------- */

.page-news .series-zone {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(circle at 82% 0%, rgba(75, 63, 191, 0.22), transparent 58%),
    var(--void);
}

.page-news .series-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 34px);
}

.page-news .series-card {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px) clamp(16px, 2.4vw, 24px) clamp(20px, 2.8vw, 28px);
  background: linear-gradient(158deg,
      rgba(75, 63, 191, 0.2) 0%,
      rgba(11, 16, 32, 0.72) 62%);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-news .series-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 26px;
  width: 46px;
  height: 2px;
  background: var(--gold);
}

.page-news .series-card__figure {
  margin: 0 0 16px;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-news .series-card__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: 0.7;
  transition: opacity var(--dur) var(--ease);
}

.page-news .series-card:hover .series-card__figure img {
  opacity: 0.95;
}

.page-news .series-card__num {
  margin: 0 0 8px;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-news .series-card__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.2rem, 3vw, 1.44rem);
  letter-spacing: 0.01em;
}

.page-news .series-card__desc {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--text-2);
}

.page-news .series-card__list {
  margin: 16px 0 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-news .series-card__list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-family: var(--font-body);
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--text-2);
}

.page-news .series-card__list .mono {
  flex: 0 0 auto;
  font-size: 0.68rem;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-news .series-card__foot {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
}

/* ---------- 版本留痕 ---------- */

.page-news .version-zone {
  background: var(--paper);
  color: var(--void);
}

.page-news .version-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
}

.page-news .version-grid__body p {
  margin: 0 0 18px;
  max-width: 74ch;
}

.page-news .version-grid__body p:last-child {
  margin-bottom: 0;
}

.page-news .version-grid__rail {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid rgba(11, 16, 32, 0.16);
  background: rgba(11, 16, 32, 0.04);
  align-self: start;
}

.page-news .version-grid__rail-k {
  margin: 0 0 16px;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: #5C6472;
  text-transform: uppercase;
}

.page-news .version-rail {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: rail;
}

.page-news .version-rail .rail__node {
  position: relative;
  padding-left: 22px;
}

.page-news .version-rail .rail__node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: transparent;
  border: 1.5px solid #5C6472;
}

.page-news .version-rail .rail__node[data-state="done"]::before {
  background: #7C9A6B;
  border-color: #7C9A6B;
}

.page-news .version-rail .rail__node[data-state="active"]::before {
  background: #D9A441;
  border-color: #D9A441;
  box-shadow: 0 0 0 4px rgba(217, 164, 65, 0.22);
}

.page-news .version-rail .rail__label {
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: #3E4453;
}

.page-news .version-rail .rail__node[data-state="active"] .rail__label {
  color: #8A6416;
  font-weight: 700;
}

.page-news .version-grid__rail-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(11, 16, 32, 0.2);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: #5C6472;
}

/* ---------- 回溯入口 ---------- */

.page-news .backfill-zone {
  border-top: 1px solid var(--line);
}

.page-news .backfill-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 26px);
}

.page-news .backfill-card {
  padding: clamp(20px, 2.8vw, 28px);
  background: rgba(11, 16, 32, 0.55);
  border: 1px solid var(--line);
}

.page-news .backfill-card__num {
  margin: 0 0 10px;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--violet-soft);
}

.page-news .backfill-card__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.1rem, 2.6vw, 1.28rem);
  line-height: 1.4;
}

.page-news .backfill-card p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--text-2);
}

.page-news .backfill-card__link {
  margin-top: 18px;
}

.page-news .backfill-card__link a {
  text-decoration: none;
  display: inline-block;
}

.page-news .backfill-note {
  margin: clamp(26px, 3.6vw, 38px) 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 0.7rem;
  line-height: 1.9;
  letter-spacing: 0.03em;
  color: var(--text-3);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-news .series-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .series-card:nth-child(3) {
    grid-column: 1 / -1;
  }

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

  .page-news .backfill-note {
    max-width: 78ch;
  }
}

@media (min-width: 900px) {
  .page-news .log-row__trigger {
    grid-template-columns: 106px minmax(0, 1fr) 220px 92px 20px;
    align-items: center;
    gap: 24px;
    padding: 22px 20px 22px 26px;
  }

  .page-news .log-row__ver {
    grid-column: 1;
    grid-row: 1;
  }

  .page-news .log-row__topic {
    grid-column: 2;
    grid-row: 1;
  }

  .page-news .log-row__scope {
    grid-column: 3;
    grid-row: 1;
  }

  .page-news .log-row__time {
    grid-column: 4;
    grid-row: 1;
    text-align: right;
  }

  .page-news .log-row__icon {
    display: block;
    grid-column: 5;
    grid-row: 1;
    text-align: right;
  }

  .page-news .log-row__panel {
    padding: 0 24px 26px 26px;
  }

  .page-news .log-row__panel-in {
    padding-left: 24px;
  }

  .page-news .version-grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
  }
}

@media (min-width: 1080px) {
  .page-news .series-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-news .series-card:nth-child(2) {
    margin-top: 46px;
  }

  .page-news .series-card:nth-child(3) {
    grid-column: auto;
    margin-top: 92px;
  }

  .page-news .backfill-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .backfill-card:nth-child(2) {
    transform: translateY(-22px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .log-row::before,
  .page-news .series-card__figure img,
  .page-news .filter-chip {
    transition: none;
  }
}