.page-news {
  --news-gold-line: rgba(232, 178, 58, 0.28);
  --news-cyan-line: rgba(53, 218, 209, 0.28);
  --news-surface: rgba(18, 22, 28, 0.72);
  display: block;
  padding-bottom: calc(var(--baseline) * 14);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: calc(var(--baseline) * 7) 0 calc(var(--baseline) * 8);
  background-color: var(--ink);
  background-image:
    linear-gradient(180deg, rgba(18, 22, 28, 0.94) 0%, rgba(10, 12, 15, 0) 78%),
    repeating-linear-gradient(90deg, var(--grid-line) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, var(--grid-line) 0 1px, transparent 1px 64px);
  border-bottom: 1px solid var(--line);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold) 0%, transparent 46%, var(--cyan) 100%);
  opacity: 0.6;
  pointer-events: none;
}

.page-news .news-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--baseline) * 5);
}

.page-news .news-hero__kicker {
  margin: 0 0 calc(var(--baseline) * 2);
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-news .news-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 4.6vw, 44px);
  line-height: 1.24;
  letter-spacing: -0.012em;
  color: var(--silver);
  max-width: 17em;
}

.page-news .news-hero__lede {
  margin: calc(var(--baseline) * 3) 0 0;
  max-width: 60ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--fog);
}

/* 专题标签带 */
.page-news .news-tagband {
  display: block;
  margin-top: calc(var(--baseline) * 4);
}

.page-news .news-tagband .segmented__list {
  position: static;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .news-tagband .segmented__indicator {
  display: none;
}

.page-news .news-tagband .segmented__btn {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 16px;
  font-family: var(--font-body);
  font-size: var(--fs-14);
  line-height: 1.5;
  color: var(--fog);
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.page-news .news-tagband .segmented__btn:hover {
  color: var(--silver);
  border-color: var(--news-cyan-line);
}

.page-news .news-tagband .segmented__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .news-tagband .segmented__btn[aria-selected="true"] {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
  font-weight: 600;
}

.page-news .news-tagband__count {
  margin: calc(var(--baseline) * 2) 0 0;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--fog-dim);
}

/* 右栏：头条图与最新条目 */
.page-news .news-hero__sidebar,
.page-news .news-hero__side {
  display: block;
}

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

.page-news .news-latest {
  margin-top: calc(var(--baseline) * 3);
  padding: calc(var(--baseline) * 3);
  border: 1px solid var(--line);
  border-left: 2px solid var(--gold);
  background: var(--news-surface);
}

.page-news .news-latest__title {
  margin: 0 0 calc(var(--baseline) * 1.5);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--gold);
}

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

.page-news .news-latest__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-news .news-latest__idx {
  font-size: var(--fs-12);
  color: var(--fog-dim);
}

.page-news .news-latest__link {
  color: var(--silver);
  font-size: var(--fs-14);
  line-height: 1.65;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-news .news-latest__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--news-cyan-line);
}

/* ---------- 主体两栏 ---------- */
.page-news .news-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--baseline) * 6);
  padding-top: calc(var(--baseline) * 8);
}

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

/* ---------- 编号章节 ---------- */
.page-news .section {
  scroll-margin-top: calc(var(--header-h) + 24px);
  padding-bottom: calc(var(--baseline) * 9);
}

.page-news .section + .section {
  border-top: 1px solid var(--line-soft);
  padding-top: calc(var(--baseline) * 7);
}

.page-news .section:last-of-type {
  padding-bottom: 0;
}

.page-news .section__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold);
}

.page-news .section__title {
  margin: calc(var(--baseline) * 1.5) 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--silver);
}

.page-news .section__lede {
  margin: calc(var(--baseline) * 2) 0 0;
  max-width: 64ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--fog);
}

/* 章节内图片 */
.page-news .figure {
  margin: 0;
}

.page-news .news-band {
  margin-top: calc(var(--baseline) * 4);
  border: 1px solid var(--line);
}

.page-news .news-inline-figure {
  margin-top: calc(var(--baseline) * 4);
  border: 1px solid var(--line);
}

.page-news .news-tail-figure {
  margin-top: calc(var(--baseline) * 5);
  border: 1px solid var(--line);
}

/* ---------- 专题节奏表 ---------- */
.page-news .news-spec {
  margin-top: calc(var(--baseline) * 4);
  border-top: 1px solid var(--line);
}

.page-news .news-spec__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: var(--fs-14);
  line-height: 1.7;
}

.page-news .news-spec__row--head {
  color: var(--fog-dim);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
}

.page-news .news-spec__cell {
  color: var(--fog);
  min-width: 0;
}

.page-news .news-spec__name {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--silver);
  font-weight: 600;
}

.page-news .news-spec__cell--mono {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-news .news-spec__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 2px;
}

.page-news .news-spec__dot--version { background: var(--gold); }
.page-news .news-spec__dot--help { background: var(--cyan); }
.page-news .news-spec__dot--coop { background: var(--green); }
.page-news .news-spec__dot--series { background: var(--silver); }
.page-news .news-spec__dot--device { background: var(--fog); }

/* ---------- 条目流 ---------- */
.page-news .news-stream {
  margin-top: calc(var(--baseline) * 4);
  border-top: 1px solid var(--line);
}

.page-news .news-item {
  display: grid;
  grid-template-columns: 3px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
  transition: border-color 180ms ease;
}

.page-news .news-item__mark {
  display: block;
  border-radius: 2px;
  background: var(--line);
  transition: background-color 180ms ease;
}

.page-news .news-item[data-segment="version"] .news-item__mark { background: var(--gold); }
.page-news .news-item[data-segment="help"] .news-item__mark { background: var(--cyan); }
.page-news .news-item[data-segment="coop"] .news-item__mark { background: var(--green); }
.page-news .news-item[data-segment="series"] .news-item__mark { background: var(--silver); }
.page-news .news-item[data-segment="device"] .news-item__mark { background: var(--fog); }

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

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: var(--fs-12);
  color: var(--fog-dim);
}

.page-news .news-item__time {
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--fog-dim);
}

.page-news .news-item__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: var(--fs-20);
  line-height: 1.42;
  letter-spacing: -0.005em;
}

.page-news .news-item__title a {
  color: var(--silver);
  text-decoration: none;
  transition: color 180ms ease;
}

.page-news .news-item__title a:hover {
  color: var(--cyan);
}

.page-news .news-item__summary {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--fog);
}

.page-news .news-item__scope {
  margin: 10px 0 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--fog-dim);
}

.page-news .news-item__scope .mono {
  margin-right: 8px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-news .news-item__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--fog);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-news .news-item__more:hover {
  color: var(--cyan);
  border-bottom-color: var(--news-cyan-line);
}

@media (hover: hover) and (pointer: fine) {
  .page-news .news-item__summary {
    max-height: 0;
    margin-top: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 240ms ease, opacity 200ms ease, margin-top 200ms ease;
  }

  .page-news .news-item:hover,
  .page-news .news-item:focus-within {
    border-bottom-color: var(--news-cyan-line);
  }

  .page-news .news-item:hover .news-item__summary,
  .page-news .news-item:focus-within .news-item__summary {
    max-height: 9em;
    margin-top: 10px;
    opacity: 1;
  }
}

/* ---------- 持续关注 ---------- */
.page-news .news-follow {
  margin-top: calc(var(--baseline) * 4);
  padding: calc(var(--baseline) * 4);
  border: 1px dashed var(--line);
  background: var(--news-surface);
}

.page-news .news-follow__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--silver);
}

.page-news .news-follow__note {
  margin: calc(var(--baseline) * 1.5) 0 0;
  max-width: 64ch;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--fog);
}

.page-news .news-follow__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: calc(var(--baseline) * 3);
  align-items: center;
}

.page-news .news-follow__actions .copy-btn {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.02em;
}

/* ---------- 往期回看 ---------- */
.page-news .news-archive {
  margin-top: calc(var(--baseline) * 5);
  padding-top: calc(var(--baseline) * 4);
  border-top: 1px solid var(--line-soft);
}

.page-news .news-archive__title {
  margin: 0 0 calc(var(--baseline) * 2);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--gold);
}

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

.page-news .news-archive__item {
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-archive__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 16px 0;
  text-decoration: none;
  transition: padding-left 180ms ease;
}

.page-news .news-archive__label {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-news .news-archive__desc {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--silver);
}

.page-news .news-archive__arrow {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--fog-dim);
  transition: color 180ms ease, transform 180ms ease;
}

.page-news .news-archive__link:hover .news-archive__desc {
  color: var(--gold);
}

.page-news .news-archive__link:hover .news-archive__arrow {
  color: var(--cyan);
  transform: translateX(4px);
}

/* ---------- 右侧粘性索引 ---------- */
.page-news .news-rail {
  padding: calc(var(--baseline) * 2.5) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news .news-rail__label {
  margin: 0 0 calc(var(--baseline) * 1.5);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--fog-dim);
}

.page-news .news-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

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

.page-news .news-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  text-decoration: none;
  color: var(--fog);
  font-size: var(--fs-14);
  line-height: 1.5;
  white-space: nowrap;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.page-news .news-rail__link:hover,
.page-news .news-rail__link.is-active {
  color: var(--silver);
  border-color: var(--news-cyan-line);
  background: var(--graphite);
}

.page-news .news-rail__num {
  font-size: var(--fs-12);
  color: var(--gold);
}

.page-news .news-rail__text {
  font-size: var(--fs-12);
}

.page-news .news-rail__foot {
  margin: calc(var(--baseline) * 2) 0 0;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--fog-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .news-spec__row {
    grid-template-columns: 180px minmax(0, 1fr) 160px;
    gap: 20px;
    align-items: baseline;
  }

  .page-news .news-archive__link {
    grid-template-columns: 110px minmax(0, 1fr) auto;
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 1000px) {
  .page-news .news-hero {
    padding-bottom: calc(var(--baseline) * 10);
  }

  .page-news .news-hero__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: calc(var(--baseline) * 6);
    align-items: start;
  }

  .page-news .news-hero__main {
    grid-column: 1 / span 7;
  }

  .page-news .news-hero__side {
    grid-column: 9 / span 4;
  }

  .page-news .news-layout {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: calc(var(--baseline) * 7);
  }

  .page-news .news-layout__rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }

  .page-news .news-rail__list {
    flex-direction: column;
    overflow: visible;
  }

  .page-news .news-rail__link {
    white-space: normal;
    border-color: transparent;
    border-left: 2px solid var(--line);
    border-radius: 0;
    padding: 8px 12px;
  }

  .page-news .news-rail__link:hover,
  .page-news .news-rail__link.is-active {
    border-color: transparent;
    border-left-color: var(--gold);
    background: rgba(28, 34, 41, 0.6);
  }

  .page-news .news-item {
    gap: 22px;
    padding: 24px 0;
  }
}

@media (max-width: 999px) {
  .page-news .news-layout__rail {
    order: -1;
    margin-bottom: calc(var(--baseline) * 2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item__summary {
    max-height: none;
    opacity: 1;
  }

  .page-news .news-tagband .segmented__btn,
  .page-news .news-item,
  .page-news .news-item__mark,
  .page-news .news-archive__link,
  .page-news .news-archive__arrow,
  .page-news .news-latest__link,
  .page-news .news-item__more {
    transition: none;
  }

  .page-news .news-archive__link:hover .news-archive__arrow {
    transform: none;
  }
}