/* ===== 专题中心 · page-news ===== */

.page-news {
  --tp-gap-s: 0.75rem;
  --tp-gap-m: clamp(1rem, 2vw, 1.5rem);
  --tp-gap-l: clamp(2rem, 5vw, 3.5rem);
}

.page-news .tp-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.03em;
}

/* ---------- 首屏 ---------- */

.page-news .tp-hero {
  position: relative;
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(2.25rem, 6vw, 4rem);
  border-bottom: 2px solid var(--line);
  overflow: hidden;
}

.page-news .tp-hero::before {
  content: "";
  position: absolute;
  inset: -10% -6% 0;
  background-image:
    linear-gradient(to right, rgba(30, 44, 72, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 44, 72, 0.6) 1px, transparent 1px);
  background-size: 92px 92px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.15) 70%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.15) 70%, transparent 100%);
  pointer-events: none;
}

.page-news .tp-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-news .tp-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: start;
}

.page-news .tp-hero__head {
  padding-top: clamp(1rem, 3vw, 2rem);
}

.page-news .tp-hero__title {
  margin: 0.5rem 0 0;
}

.page-news .tp-hero__lede {
  margin: 1rem 0 0;
  max-width: 44rem;
}

.page-news .tp-hero__media {
  margin: 0;
}

.page-news .tp-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(1.5rem, 3vw, 2rem) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 2px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-news .tp-metrics > li {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.9rem 1rem;
  background: var(--ink-800);
}

.page-news .tp-metrics__num {
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  font-weight: 500;
  line-height: 1;
  color: var(--white);
}

.page-news .tp-metrics > li:first-child .tp-metrics__num {
  color: var(--red);
}

.page-news .tp-metrics__label {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--steel);
}

/* ---------- 索引主体 ---------- */

.page-news .tp-index {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.page-news .tp-index__layout {
  display: grid;
  gap: var(--tp-gap-l);
}

/* 左侧固定轨道 */

.page-news .tp-rail {
  border: 2px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-800);
  padding: 1.15rem 1.15rem 1.35rem;
}

.page-news .tp-rail__eyebrow {
  margin: 0;
}

.page-news .tp-rail__eyebrow + * {
  margin-top: 0.65rem;
}

.page-news .tp-rail__note {
  margin: 1.2rem 0 0;
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-news .tp-rail__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 224, 216, 0.4);
}

.page-news .tp-rail__note a:hover,
.page-news .tp-rail__note a:focus-visible {
  color: var(--white);
}

.page-news .tp-filters {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: max-content;
  gap: 0.5rem;
  margin: 0.65rem 0 0;
  padding: 0 0 0.35rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-news .tp-filters::-webkit-scrollbar {
  display: none;
}

.page-news .tp-filter {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.95rem;
  border: 2px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--body-tint);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 160ms var(--ease), color 160ms var(--ease),
    background-color 160ms var(--ease), transform 160ms var(--ease);
}

.page-news .tp-filter:hover,
.page-news .tp-filter:focus-visible {
  border-color: var(--red);
  color: var(--white);
  transform: translateX(3px);
}

.page-news .tp-filter--on {
  background: var(--red);
  border-color: var(--red);
  color: var(--white);
}

.page-news .tp-scale {
  display: flex;
  gap: 4px;
  margin-top: 0.65rem;
}

.page-news .tp-scale__seg {
  flex: 1 1 0;
  height: 20px;
  border-radius: 3px;
  background: var(--ink-900);
  border: 1px solid var(--line);
}

.page-news .tp-scale__seg.is-done {
  background: var(--red);
  border-color: var(--red-deep);
}

.page-news .tp-scale__label {
  margin: 0.5rem 0 0;
  font-size: 0.74rem;
  color: var(--cyan);
}

/* 右侧条目流 */

.page-news .tp-list {
  display: grid;
  gap: clamp(2.25rem, 5vw, 3.5rem);
  min-width: 0;
}

.page-news .tp-group {
  display: grid;
  gap: 1.1rem;
  scroll-margin-top: 6.5rem;
}

.page-news .tp-group__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.4rem 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 2px solid var(--line);
}

.page-news .tp-group__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 64px;
  height: 2px;
  background: var(--red);
}

.page-news .tp-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-news .tp-group__stamp {
  font-size: 0.72rem;
  color: var(--cyan);
  white-space: nowrap;
}

.page-news .tp-group__note {
  margin: 0;
  max-width: 46rem;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-news .tp-group__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin: 0;
}

/* 卡片 */

.page-news .tp-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  border: 2px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-800);
  overflow: hidden;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-news .tp-card:hover,
.page-news .tp-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--red);
}

.page-news .tp-card--lead {
  border-color: var(--line-strong);
}

.page-news .tp-card__media {
  margin: 0;
  background: var(--ink-900);
  border-bottom: 2px solid var(--line);
}

.page-news .tp-card__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-news .tp-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1rem 1.1rem 1.2rem;
}

.page-news .tp-card--lead .tp-card__body {
  padding: 1.25rem 1.35rem 1.5rem;
}

.page-news .tp-card__meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.page-news .tp-card__stamp {
  font-size: 0.72rem;
  color: var(--steel);
  white-space: nowrap;
}

.page-news .tp-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.005em;
  color: var(--white);
}

.page-news .tp-card--lead .tp-card__title {
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  line-height: 1.4;
}

.page-news .tp-card__summary {
  margin: 0;
  max-height: 3.25rem;
  overflow: hidden;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--body-tint);
  transition: max-height 240ms var(--ease);
}

.page-news .tp-card:hover .tp-card__summary,
.page-news .tp-card:focus-within .tp-card__summary {
  max-height: 9rem;
}

/* ---------- 年度专题 ---------- */

.page-news .tp-album {
  background: var(--paper);
  color: var(--ink-900);
  border-top: 2px solid var(--red);
  border-bottom: 2px solid var(--red);
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

.page-news .tp-album .eyebrow {
  color: var(--red-deep);
}

.page-news .tp-album__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-news .tp-album__title {
  margin: 0.45rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.2vw, 2.1rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--ink-900);
}

.page-news .tp-album__lede {
  margin: 0.9rem 0 0;
  max-width: 42rem;
  font-family: var(--font-serif);
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--ink-800);
}

.page-news .tp-album__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(17, 28, 51, 0.22);
  border: 2px solid var(--ink-800);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-news .tp-album__facts > li {
  display: flex;
  flex-direction: column;
  gap: 0.22rem;
  padding: 0.95rem 1rem;
  background: var(--paper);
}

.page-news .tp-album__num {
  font-size: clamp(1.5rem, 2.6vw, 1.9rem);
  font-weight: 500;
  line-height: 1;
  color: var(--red-deep);
}

.page-news .tp-album__name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-900);
}

.page-news .tp-album__desc {
  font-size: 0.76rem;
  line-height: 1.6;
  color: #4a5878;
}

.page-news .tp-album__more {
  margin: 1.75rem 0 0;
  padding-top: 1.25rem;
  border-top: 2px solid rgba(17, 28, 51, 0.2);
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--ink-800);
}

/* ---------- 订阅与追踪 ---------- */

.page-news .tp-follow {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.page-news .tp-follow__title {
  margin: 0.45rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.2vw, 2.1rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-news .tp-follow__lede {
  margin: 0.9rem 0 0;
  max-width: 44rem;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--body-tint);
}

.page-news .tp-follow__grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  background: var(--line);
  border: 2px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-news .tp-follow__card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.35rem 1.3rem 1.5rem;
  background: var(--ink-800);
  transition: background-color 180ms var(--ease);
}

.page-news .tp-follow__card:hover {
  background: #16233e;
}

.page-news .tp-follow__idx {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--red);
}

.page-news .tp-follow__card-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-news .tp-follow__card p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--body-tint);
}

.page-news .tp-follow__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.page-news .tp-follow__foot {
  margin: 1.25rem 0 0;
  font-size: 0.84rem;
  color: var(--steel);
}

.page-news .tp-follow__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 224, 216, 0.4);
}

.page-news .tp-follow__foot a:hover,
.page-news .tp-follow__foot a:focus-visible {
  color: var(--white);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-news .tp-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-news .tp-group__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-news .tp-card--lead {
    grid-column: 1 / -1;
  }

  .page-news .tp-card--lead .tp-card__media img {
    aspect-ratio: 16 / 9;
  }

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

@media (min-width: 900px) {
  .page-news .tp-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-news .tp-album__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-news .tp-index__layout {
    grid-template-columns: minmax(0, 15rem) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.25rem);
    align-items: start;
  }

  .page-news .tp-rail {
    position: sticky;
    top: 6.5rem;
  }

  .page-news .tp-filters {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    overflow-x: visible;
    padding-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .tp-card,
  .page-news .tp-card__summary,
  .page-news .tp-filter,
  .page-news .tp-follow__card {
    transition: none;
  }

  .page-news .tp-card:hover,
  .page-news .tp-card:focus-within {
    transform: none;
  }

  .page-news .tp-filter:hover,
  .page-news .tp-filter:focus-visible {
    transform: none;
  }
}