.page-news {
  --news-rail: 264px;
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: 48px;
}

/* ---------- 首屏声明区 ---------- */
.page-news .news-masthead {
  display: grid;
  gap: var(--gap);
  padding-top: 22px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
}

.page-news .news-masthead__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-news .news-masthead h1 {
  margin: 0;
  font-size: clamp(2rem, 8vw, 3.4rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.page-news .news-masthead__p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 42ch;
}

.page-news .board {
  position: relative;
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 20px 18px 18px;
}

.page-news .board::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 56px;
  height: 2px;
  background: var(--cyan);
}

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

.page-news .board__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .board__row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-news .board__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
  min-width: 3.2ch;
}

.page-news .board__txt {
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .board__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  border-left: 1px solid var(--cyan);
  padding-left: 10px;
}

/* ---------- 目录式列表 ---------- */
.page-news .news-desk {
  display: grid;
  gap: 18px;
  padding-top: 36px;
  padding-bottom: 24px;
}

.page-news .block-head {
  margin: 0 0 18px;
}

.page-news .block-head__kicker {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-news .block-head__title {
  margin: 0;
  font-size: clamp(1.45rem, 5vw, 2.1rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-news .block-head__note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 46ch;
}

.page-news .rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 12px;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}

.page-news .rail__cap {
  display: none;
}

.page-news .rail__btn {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-news .rail__n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-900);
  background: var(--muted);
  padding: 2px 5px;
  border-radius: 999px;
}

.page-news .rail__btn:hover {
  color: var(--paper);
  border-color: var(--cyan);
}

.page-news .rail__btn:hover .rail__n {
  background: var(--cyan);
}

.page-news .rail__btn[aria-pressed="true"],
.page-news .rail__btn.is-active {
  color: var(--cyan);
  border-color: var(--cyan);
  background: var(--ink-700);
}

.page-news .rail__btn[aria-pressed="true"] .rail__n,
.page-news .rail__btn.is-active .rail__n {
  background: var(--cyan);
}

.page-news .rail__note {
  display: none;
}

/* ---------- 条目流 ---------- */
.page-news .stream {
  display: flex;
  flex-direction: column;
}

.page-news .feed-item {
  border-top: 1px solid var(--line);
  padding: 20px 14px;
  margin: 0 -14px;
  display: grid;
  gap: 14px;
  transition: background-color 0.2s ease;
}

.page-news .feed-item:hover {
  background: var(--ink-800);
}

.page-news .feed-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-news .feed-item__time {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-news .feed-item__title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.page-news .feed-item__desc {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 44ch;
}

.page-news .feed-item__foot {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

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

.page-news .feed-item__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.82);
}

/* ---------- 通栏专题大卡 ---------- */
.page-news .feed-feature {
  position: relative;
  margin: 26px -14px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
  display: grid;
}

.page-news .feed-feature__media {
  margin: 0;
}

.page-news .feed-feature__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.8) brightness(0.72);
}

.page-news .feed-feature__body {
  padding: 18px 18px 20px;
  display: grid;
  gap: 10px;
  align-content: start;
  border-top: 2px solid var(--cyan);
}

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

.page-news .feed-feature__title {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-news .feed-feature__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 46ch;
}

.page-news .feed-feature__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  transition: color 0.2s ease;
}

.page-news .feed-feature:hover .feed-feature__meta {
  color: var(--paper);
}

.page-news .feed-feature .btn {
  justify-self: start;
  margin-top: 4px;
}

/* ---------- 空态 ---------- */
.page-news [data-filter-empty] {
  display: none;
}

.page-news [data-filter-empty][data-shown="true"],
.page-news [data-filter-empty]:not([hidden]) {
  display: block;
  margin: 18px 0 0;
  padding: 18px;
  border: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 专题策划区 ---------- */
.page-news #features {
  scroll-margin-top: calc(var(--header-h, 72px) + 20px);
  padding-top: 34px;
  padding-bottom: 34px;
  border-top: 1px solid var(--line);
}

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

.page-news .topic {
  border: 1px solid var(--line);
  border-top: 2px solid var(--line);
  background: var(--ink-700);
  padding: 20px 18px;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-news .topic--cyan {
  border-top-color: var(--cyan);
}

.page-news .topic--ice {
  border-top-color: var(--ice);
}

.page-news .topic--amber {
  border-top-color: var(--amber);
}

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

.page-news .topic__title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
}

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

.page-news .topic__meta {
  margin: 2px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

/* ---------- 集锦速递栏目说明 ---------- */
.page-news .news-clips {
  display: grid;
  gap: 20px;
  padding-top: 30px;
  padding-bottom: 34px;
  border-top: 1px solid var(--line);
}

.page-news .news-clips__aside .aside-note {
  margin: 0;
}

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

.page-news .news-clips__p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.75;
  max-width: 42ch;
}

.page-news .clips-facts {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-news .clips-fact {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-news .clips-fact__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--amber);
  min-width: 4.4ch;
}

.page-news .clips-fact__txt {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.page-news .news-clips__more {
  margin: 16px 0 0;
  font-size: 14px;
}

.page-news .news-clips__more a {
  color: var(--cyan);
  border-bottom: 1px solid var(--cyan);
  padding-bottom: 1px;
}

/* ---------- 订阅与回访 ---------- */
.page-news .follow {
  display: grid;
  gap: 18px;
  padding-top: 32px;
  padding-bottom: 12px;
  border-top: 1px solid var(--line);
}

.page-news .follow__desc {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 44ch;
}

.page-news .follow__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-news .follow__note {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-news .follow__side {
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 20px 18px;
}

.page-news .follow__cap {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-news .follow__steps {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 0;
}

.page-news .follow__steps li {
  counter-increment: step;
  position: relative;
  padding: 12px 0 12px 30px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
}

.page-news .follow__steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--orange);
}

.page-news .follow__back {
  margin: 14px 0 0;
  font-size: 13px;
}

.page-news .follow__back a {
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
}

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

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-news .news-masthead {
    padding-top: 30px;
    padding-bottom: 38px;
  }

  .page-news .feed-item--thumb {
    grid-template-columns: minmax(0, 1fr) 200px;
    align-items: start;
    column-gap: 22px;
  }

  .page-news .feed-item--thumb .feed-item__media {
    grid-column: 2;
    grid-row: 1;
    margin-top: 4px;
  }

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

  .page-news .feed-feature__body {
    gap: 12px;
    padding: 22px 24px 24px;
  }
}

/* ---------- 桌面：左栏常驻 ---------- */
@media (min-width: 900px) {
  .page-news .news-masthead {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: 44px;
    align-items: end;
  }

  .page-news .news-masthead h1 {
    max-width: 16ch;
  }

  .page-news .feed-feature__media img {
    aspect-ratio: 2 / 1;
    min-height: 340px;
  }

  .page-news .feed-feature__body {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    border-top: 0;
    padding: 30px 34px 28px;
    background: linear-gradient(
      to top,
      rgba(5, 11, 20, 0.97) 10%,
      rgba(5, 11, 20, 0.78) 55%,
      rgba(5, 11, 20, 0) 100%
    );
  }

  .page-news .feed-feature__title {
    font-size: clamp(1.6rem, 2.6vw, 2.15rem);
    max-width: 22ch;
  }

  .page-news .feed-feature::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 72px;
    height: 2px;
    background: var(--orange);
    z-index: 2;
  }

  .page-news .news-clips {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    column-gap: 48px;
    align-items: start;
  }

  .page-news .follow {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: 44px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-news .news-desk {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    column-gap: 44px;
    row-gap: 24px;
    padding-top: 44px;
  }

  .page-news .news-desk__head {
    grid-column: 1 / -1;
    margin-bottom: 0;
  }

  .page-news .rail {
    position: sticky;
    top: calc(var(--header-h, 72px) + 20px);
    align-self: start;
    display: block;
    overflow: visible;
    padding: 0;
    border-bottom: 0;
    border-top: 1px solid var(--line);
  }

  .page-news .rail__cap {
    display: block;
    margin: 14px 0 0;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--muted);
  }

  .page-news .rail__btn {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    padding: 13px 2px;
    border: 0;
    border-top: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    font-size: 14px;
    text-align: left;
    white-space: normal;
  }

  .page-news .rail__n {
    background: var(--ink-700);
    color: var(--muted);
    border-radius: 0;
    padding: 2px 6px;
  }

  .page-news .rail__btn:hover {
    background: transparent;
    border-top-color: var(--muted);
  }

  .page-news .rail__btn:hover .rail__n {
    background: var(--ink-700);
    color: var(--paper);
  }

  .page-news .rail__btn[aria-pressed="true"],
  .page-news .rail__btn.is-active {
    background: transparent;
    border-color: var(--line);
    border-top-color: var(--cyan);
    color: var(--cyan);
  }

  .page-news .rail__btn[aria-pressed="true"] .rail__n,
  .page-news .rail__btn.is-active .rail__n {
    background: var(--cyan);
    color: var(--ink-900);
  }

  .page-news .rail__note {
    display: block;
    margin: 18px 0 0;
    padding-left: 10px;
    border-left: 1px solid var(--line);
    font-size: 12px;
    line-height: 1.7;
    color: var(--muted);
  }

  .page-news .feed-item {
    padding: 22px 16px;
    margin: 0 -16px;
  }

  .page-news .feed-feature {
    margin: 28px -16px;
  }

  .page-news .feed-item__title {
    font-size: 1.2rem;
  }

  .page-news .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}