.page-news {
  --news-line: var(--grid-line);
  --news-pad: clamp(24px, 5vw, 64px);
  background: var(--ink-deep);
  color: var(--text-bright);
  font-family: var(--f-body);
}

.page-news .h-section {
  margin: 0;
}

.page-news .sec-head {
  display: grid;
  gap: 8px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--news-line);
}

.page-news .sec-head .label {
  justify-self: start;
}

.page-news .sec-head__hint {
  margin: 0;
  max-width: 58ch;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  padding: var(--news-pad) 0;
  border-bottom: 1px solid var(--news-line);
  background: linear-gradient(180deg, var(--night-blue) 0%, var(--ink-deep) 68%);
}

.page-news .news-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-news .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-muted);
}

.page-news .crumbs a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

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

.page-news .crumbs [aria-current="page"] {
  color: var(--text-bright);
}

.page-news .news-hero__title {
  margin: 14px 0 0;
  font-family: var(--f-display);
  font-size: clamp(2.6rem, 8vw, 4.8rem);
  line-height: .94;
  letter-spacing: -.02em;
  color: var(--text-bright);
}

.page-news .news-hero__lede {
  margin: 18px 0 0;
  max-width: 46ch;
  color: var(--text-bright);
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.75;
}

.page-news .news-hero__meta {
  margin: 18px 0 0;
  color: var(--amber);
  font-size: 13px;
  letter-spacing: .06em;
}

.page-news .news-hero__figure {
  margin: 0;
  border: 1px solid var(--news-line);
}

.page-news .news-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

/* ---------- 概览带 ---------- */

.page-news .news-brief {
  padding: var(--news-pad) 0 0;
}

.page-news .brief-rail {
  margin-top: 24px;
  border-top: 1px solid var(--news-line);
  border-bottom: 1px solid var(--news-line);
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-news .brief-rail__track {
  display: flex;
  min-width: min-content;
  padding: 0 var(--gutter);
}

.page-news .brief-card {
  flex: 0 0 auto;
  width: min(84vw, 340px);
  padding: 24px 22px 26px;
  display: grid;
  align-content: start;
  gap: 10px;
  scroll-snap-align: start;
  background: var(--night-blue);
  border-right: 1px solid var(--news-line);
  transition: background var(--t-base) var(--ease);
}

.page-news .brief-card:first-child {
  border-left: 1px solid var(--news-line);
}

.page-news .brief-card:hover,
.page-news .brief-card:focus-within {
  background: var(--turf);
}

.page-news .brief-card .label {
  justify-self: start;
  font-size: 12px;
}

.page-news .brief-card__step {
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: .14em;
}

.page-news .brief-card__title {
  margin: 2px 0 0;
  font-family: var(--f-display);
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  line-height: 1.28;
  color: var(--text-bright);
}

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

.page-news .brief-card__line .mono {
  margin-right: 8px;
  color: var(--volt);
  font-size: 12px;
  letter-spacing: .1em;
}

/* ---------- 条目索引区 ---------- */

.page-news .news-stream {
  padding: var(--news-pad) 0;
  border-top: 1px solid var(--news-line);
}

.page-news .nf-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.page-news .news-index__grid {
  display: grid;
  gap: 0;
  margin-top: 24px;
}

.page-news .nf-index {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--news-line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-news .nf-index__cap {
  flex: 0 0 auto;
  margin: 0;
  padding-right: 6px;
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: .14em;
  white-space: nowrap;
}

.page-news .nf-tab {
  flex: 0 0 auto;
  padding: 8px 14px;
  border: 1px solid var(--news-line);
  background: var(--ink-deep);
  color: var(--text-muted);
  font-size: 14px;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-news .nf-tab:hover {
  color: var(--text-bright);
  border-color: var(--volt);
}

.page-news #nf-all:checked ~ .news-index__grid .nf-tab[for="nf-all"],
.page-news #nf-version:checked ~ .news-index__grid .nf-tab[for="nf-version"],
.page-news #nf-zone:checked ~ .news-index__grid .nf-tab[for="nf-zone"],
.page-news #nf-channel:checked ~ .news-index__grid .nf-tab[for="nf-channel"],
.page-news #nf-edit:checked ~ .news-index__grid .nf-tab[for="nf-edit"] {
  background: var(--volt);
  border-color: var(--volt);
  color: var(--ink-deep);
  font-weight: 600;
}

.page-news #nf-all:focus-visible ~ .news-index__grid .nf-tab[for="nf-all"],
.page-news #nf-version:focus-visible ~ .news-index__grid .nf-tab[for="nf-version"],
.page-news #nf-zone:focus-visible ~ .news-index__grid .nf-tab[for="nf-zone"],
.page-news #nf-channel:focus-visible ~ .news-index__grid .nf-tab[for="nf-channel"],
.page-news #nf-edit:focus-visible ~ .news-index__grid .nf-tab[for="nf-edit"] {
  outline: 2px solid var(--volt);
  outline-offset: 2px;
}

.page-news #nf-version:checked ~ .news-index__grid .news-group:not([data-grp="version"]),
.page-news #nf-zone:checked ~ .news-index__grid .news-group:not([data-grp="zone"]),
.page-news #nf-channel:checked ~ .news-index__grid .news-group:not([data-grp="channel"]),
.page-news #nf-edit:checked ~ .news-index__grid .news-group:not([data-grp="edit"]) {
  display: none;
}

/* ---------- 分组 ---------- */

.page-news .news-group {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--news-line);
}

.page-news .news-group:first-child {
  margin-top: 28px;
}

.page-news .news-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 16px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--volt);
}

.page-news .news-group__num {
  color: var(--volt);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1;
}

.page-news .news-group__title {
  margin: 0;
  font-family: var(--f-display);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.15;
  color: var(--text-bright);
}

.page-news .news-group__desc {
  grid-column: 1 / -1;
  margin: 8px 0 0;
  max-width: 58ch;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

.page-news .news-figure {
  margin: 24px 0 0;
  border: 1px solid var(--news-line);
}

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

/* ---------- 条目 ---------- */

.page-news .news-item {
  border-bottom: 1px solid var(--news-line);
  transition: background var(--t-base) var(--ease);
}

.page-news .news-item:hover,
.page-news .news-item:focus-within {
  background: var(--turf);
}

.page-news .news-item__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding: 16px 12px 14px;
}

.page-news .news-item__title {
  flex: 1 0 100%;
  margin: 0;
  color: var(--text-bright);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
}

.page-news .news-item .label {
  font-size: 12px;
}

.page-news .news-item__time {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: .06em;
  white-space: nowrap;
}

.page-news .news-item__more {
  padding: 0 12px;
}

.page-news .news-item__more[open] {
  padding-bottom: 16px;
}

.page-news .news-item__more summary {
  padding: 0 0 12px;
  list-style: none;
  cursor: pointer;
  color: var(--text-dim);
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .1em;
  transition: color var(--t-fast) var(--ease);
}

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

.page-news .news-item__more summary::before {
  content: "+ ";
  color: var(--volt);
}

.page-news .news-item__more[open] summary::before {
  content: "− ";
}

.page-news .news-item__more summary:hover,
.page-news .news-item__more summary:focus-visible {
  color: var(--volt);
}

.page-news .news-item__more p {
  margin: 0;
  max-width: 62ch;
  color: var(--text-muted);
  font-size: 14.5px;
  line-height: 1.75;
}

/* ---------- 回看方式 ---------- */

.page-news .news-next {
  padding: var(--news-pad) 0 calc(var(--news-pad) * 1.2);
  border-top: 1px solid var(--news-line);
  background: var(--night-blue);
}

.page-news .next-steps {
  display: grid;
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  background: var(--news-line);
  border: 1px solid var(--news-line);
}

.page-news .next-step {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 22px 20px 26px;
  background: var(--ink-deep);
  transition: background var(--t-base) var(--ease);
}

.page-news .next-step:hover {
  background: var(--turf);
}

.page-news .next-step__num {
  color: var(--volt);
  font-size: 13px;
  letter-spacing: .14em;
}

.page-news .next-step h3 {
  margin: 0;
  color: var(--text-bright);
  font-size: 1.05rem;
  line-height: 1.45;
}

.page-news .next-step p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.75;
}

.page-news .next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-news .news-item__row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 16px;
    align-items: baseline;
    padding: 16px 12px;
  }

  .page-news .news-item__title {
    flex: none;
  }

  .page-news .news-item__time {
    margin-left: 0;
  }
}

@media (min-width: 820px) {
  .page-news .next-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .page-news .brief-card {
    width: min(30vw, 360px);
  }
}

@media (min-width: 960px) {
  .page-news .news-index__grid {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 0 clamp(24px, 4vw, 56px);
  }

  .page-news .nf-index {
    position: sticky;
    top: calc(var(--bar-h) + 16px);
    align-self: start;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 0 16px 0 0;
    border-bottom: 0;
    border-right: 1px solid var(--news-line);
    overflow: visible;
  }

  .page-news .nf-index__cap {
    padding: 0 0 8px;
  }

  .page-news .nf-tab {
    width: 100%;
    text-align: left;
  }

  .page-news .news-group:first-child {
    margin-top: 0;
  }
}