.page-news {
  --news-gutter: clamp(20px, 4vw, 64px);
  --news-cobalt: #17315C;
  --news-ink: #0A1428;
  --news-paper: #F7F9FC;
  --news-gold: #F5B23E;
  --news-violet: #7B5CFF;
  --news-silver: #C6CDDA;
  --news-char: #242B38;
  --news-reading: #E6EAF2;
  --news-radius: 20px;
  --news-mono: "JetBrains Mono", SFMono-Regular, Consolas, monospace;
  --news-sans: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --alpha: 0.4;

  background: var(--news-ink);
  color: var(--news-reading);
  overflow-x: hidden;
}

.page-news img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-news .container {
  width: min(100% - var(--news-gutter) * 2, var(--max-w, 1440px));
  margin-inline: auto;
}

.page-news .section-heading {
  margin-bottom: 44px;
}

.page-news .section-heading__range {
  display: inline-block;
  font-family: var(--news-mono);
  font-size: 0.86rem;
  font-weight: 400;
  color: var(--news-violet);
  margin-left: 12px;
  letter-spacing: 0.02em;
}

.page-news .section-heading--dark .section-heading__index {
  color: var(--news-gold);
}

/* ============ 首屏 hero ============ */
.page-news__hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-block: 108px 120px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 78% 18%, rgba(123, 92, 255, 0.18), transparent 44%),
    linear-gradient(122deg, rgba(10, 20, 40, 0.35), rgba(23, 49, 92, 0.85) 76%),
    var(--news-ink);
}

.page-news__hero::before {
  content: "";
  position: absolute;
  top: -14%;
  right: -8%;
  width: 44vw;
  height: 64vh;
  background: linear-gradient(135deg, rgba(245, 178, 62, 0.18), rgba(23, 49, 92, 0.24));
  transform: rotate(-9deg);
  z-index: 0;
  border-radius: 56% 44% 38% 62% / 48% 54% 46% 52%;
}

.page-news__hero::after {
  content: "NG";
  position: absolute;
  right: 5%;
  bottom: 10%;
  font-family: var(--news-mono);
  font-weight: 800;
  font-size: clamp(6rem, 16vw, 12rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(245, 178, 62, 0.16);
  pointer-events: none;
  z-index: 0;
}

.page-news__hero .container {
  position: relative;
  z-index: 1;
}

.news-hero__breadcrumb {
  margin-bottom: 44px;
}

.page-news .breadcrumb {
  font-family: var(--news-mono);
  font-size: 0.82rem;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .breadcrumb__link {
  color: var(--news-silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1)), color 0.2s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.page-news .breadcrumb__link:hover {
  color: var(--news-gold);
  border-bottom-color: var(--news-gold);
}

.page-news .breadcrumb__current {
  color: var(--news-gold);
}

.news-hero__grid {
  display: grid;
  gap: 32px;
}

.news-hero__title-block {
  position: relative;
}

.news-hero__eyebrow {
  display: inline-block;
  font-family: var(--news-mono);
  font-size: 0.82rem;
  letter-spacing: 0.24em;
  color: var(--news-gold);
  background: rgba(245, 178, 62, 0.1);
  border: 1px solid rgba(245, 178, 62, 0.32);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 26px;
}

.news-hero__title {
  margin: 0;
  font-family: var(--news-sans);
  font-weight: 800;
  font-size: clamp(3.2rem, 11vw, 7rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--news-paper);
}

.news-hero__mark {
  position: absolute;
  right: 2%;
  bottom: -8%;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  color: var(--news-gold);
  transform: rotate(12deg);
}

.news-hero__lede-wrap {
  max-width: 560px;
  padding-top: 12px;
}

.news-hero__lede {
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.75;
  color: var(--news-reading);
  margin: 0 0 20px;
}

.news-hero__note {
  font-family: var(--news-mono);
  font-size: 0.82rem;
  color: var(--news-silver);
  border-left: 3px solid var(--news-gold);
  padding-left: 12px;
  margin: 0;
}

.news-hero__axis {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: 56px;
}

.news-hero__axis span {
  font-family: var(--news-mono);
  font-size: 0.78rem;
  color: var(--news-silver);
  padding: 8px 14px;
  border: 1px solid rgba(198, 205, 218, 0.2);
  border-radius: 999px;
  white-space: nowrap;
  background: rgba(10, 20, 40, 0.3);
}

.news-hero__axis span:nth-child(3n + 1) {
  border-color: rgba(245, 178, 62, 0.38);
  color: var(--news-reading);
}

.news-hero__axis span:last-child {
  color: var(--news-gold);
  border-style: dashed;
}

/* ============ 01 最新观察条目 ============ */
.page-news__observe {
  background: var(--news-paper);
  color: var(--news-char);
  padding-block: 96px 120px;
}

.page-news__observe .section-heading__title {
  color: var(--news-char);
}

.page-news__observe .section-heading__index {
  color: var(--news-gold);
}

.observe-layout {
  display: grid;
  gap: 40px;
}

.observe-list {
  display: grid;
  gap: 14px;
}

.observe-row {
  position: relative;
  background: #FFFFFF;
  border: 1px solid rgba(36, 43, 56, 0.1);
  border-left: 4px solid var(--news-gold);
  border-radius: 16px;
  padding: 18px 20px;
  box-shadow: 0 10px 28px -22px rgba(10, 20, 40, 0.5);
  transition: background 0.3s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1)), border-color 0.3s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1)), transform 0.3s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1)), box-shadow 0.3s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.observe-row:hover,
.observe-row:focus-within,
.observe-row:target {
  background: var(--news-ink);
  border-left-color: var(--news-violet);
  transform: translateX(6px);
  box-shadow: 0 22px 44px -24px rgba(10, 20, 40, 0.7);
}

.observe-row__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  font-family: var(--news-sans);
  transition: color 0.3s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.observe-row__anchor {
  font-family: var(--news-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--news-gold);
  text-decoration: none;
}

.observe-row:hover .observe-row__anchor {
  color: var(--news-violet);
}

.observe-row__issue {
  font-family: var(--news-mono);
  font-size: 0.78rem;
  color: var(--news-violet);
  letter-spacing: 0.06em;
  border: 1px solid rgba(123, 92, 255, 0.28);
  background: rgba(123, 92, 255, 0.08);
  border-radius: 6px;
  padding: 2px 8px;
}

.observe-row:hover .observe-row__issue {
  color: var(--news-reading);
  border-color: rgba(123, 92, 255, 0.6);
}

.observe-row__title {
  flex: 1 1 55%;
  font-weight: 700;
  font-size: 1.08rem;
  line-height: 1.4;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--news-char);
  transition: color 0.3s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.observe-row:hover .observe-row__title,
.observe-row:focus-within .observe-row__title,
.observe-row:target .observe-row__title {
  color: var(--news-paper);
}

.observe-row__tag {
  font-family: var(--news-mono);
  font-size: 0.72rem;
  color: var(--news-char);
  background: rgba(245, 178, 62, 0.14);
  border: 1px solid rgba(245, 178, 62, 0.34);
  padding: 3px 10px;
  border-radius: 999px;
  text-decoration: none;
  transition: background 0.3s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1)), color 0.3s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.observe-row__tag:hover {
  background: rgba(245, 178, 62, 0.32);
  color: var(--news-ink);
}

.observe-row:hover .observe-row__tag {
  color: var(--news-gold);
  background: rgba(245, 178, 62, 0.16);
  border-color: rgba(245, 178, 62, 0.55);
}

.observe-row__summary {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(36, 43, 56, 0.16);
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--news-char);
  transition: border-color 0.3s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.observe-row__summary p {
  margin: 0 0 10px;
}

.observe-row__link {
  display: inline-block;
  font-family: var(--news-mono);
  font-size: 0.78rem;
  color: var(--news-violet);
  text-decoration: none;
  border-bottom: 1px solid rgba(123, 92, 255, 0.4);
  padding-bottom: 2px;
}

.observe-row:hover .observe-row__link {
  color: var(--news-gold);
  border-bottom-color: rgba(245, 178, 62, 0.6);
}

.observe-row:hover .observe-row__summary {
  color: var(--news-reading);
  border-top-color: rgba(198, 205, 218, 0.24);
}

.observe-aside {
  display: grid;
  gap: 22px;
  align-content: start;
}

.observe-aside__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 6px;
}

.aside-stat {
  background: var(--news-ink);
  border-radius: 16px;
  padding: 18px 16px;
  position: relative;
  overflow: hidden;
}

.aside-stat::after {
  content: "";
  position: absolute;
  right: -12px;
  bottom: -12px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(245, 178, 62, 0.2);
}

.aside-stat__num {
  display: block;
  font-family: var(--news-mono);
  font-weight: 800;
  font-size: 2.2rem;
  line-height: 1;
  color: var(--news-gold);
}

.aside-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--news-silver);
  font-family: var(--news-mono);
  letter-spacing: 0.04em;
}

.observe-aside__figure {
  margin: 0;
  border: 1px solid rgba(36, 43, 56, 0.1);
  border-radius: 16px;
  overflow: hidden;
  background: var(--news-cobalt);
}

.observe-aside__figure img {
  width: 100%;
  object-fit: cover;
}

.observe-aside__figure figcaption {
  font-family: var(--news-mono);
  font-size: 0.76rem;
  color: var(--news-silver);
  padding: 10px 14px;
  background: var(--news-ink);
}

/* ============ 02 热门专题 ============ */
.page-news__topics {
  background:
    radial-gradient(circle at 88% 8%, rgba(123, 92, 255, 0.16), transparent 36%),
    linear-gradient(132deg, #070E1D 0%, #0C1A34 58%, #17315C 100%);
  color: var(--news-reading);
  padding-block: 110px 130px;
}

.topic-grid {
  display: grid;
  gap: 24px;
}

.topic-card {
  perspective: 1400px;
}

.topic-card__panel {
  position: relative;
  min-height: 400px;
  transform-style: preserve-3d;
  transition: transform 0.55s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.topic-card:hover .topic-card__panel,
.topic-card:focus-within .topic-card__panel {
  transform: rotateY(180deg);
}

.topic-card__face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-radius: var(--news-radius);
  overflow: hidden;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  background: linear-gradient(155deg, #0C1E40, #0A1428 82%);
  border: 1px solid rgba(245, 178, 62, 0.22);
}

.topic-card__face--front img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.topic-card__front-meta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 26px 24px;
  background: linear-gradient(transparent 12%, rgba(10, 20, 40, 0.92));
  min-height: 100%;
  justify-content: flex-end;
}

.topic-card__front-meta--standalone {
  background:
    radial-gradient(circle at 84% 12%, rgba(123, 92, 255, 0.28) 0 42px, transparent 43px),
    linear-gradient(150deg, var(--news-cobalt), #070E1D 82%);
  min-height: 400px;
}

.topic-card__index {
  font-family: var(--news-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--news-gold);
  border: 1px solid rgba(245, 178, 62, 0.5);
  border-radius: 999px;
  padding: 3px 12px;
}

.topic-card__front-meta h3 {
  margin: 0;
  font-family: var(--news-sans);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--news-paper);
}

.topic-card__teaser {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--news-silver);
  max-width: 23em;
}

.topic-card__face--back {
  transform: rotateY(180deg);
  justify-content: center;
  align-items: flex-start;
  gap: 14px;
  padding: 30px 26px;
  background:
    linear-gradient(154deg, rgba(8, 14, 26, 0.94), rgba(16, 33, 68, 0.88)),
    var(--news-ink);
  border: 1px solid var(--news-gold);
  box-shadow: 0 20px 54px -28px rgba(245, 178, 62, 0.45);
}

.topic-card__eyebrow {
  font-family: var(--news-mono);
  font-size: 0.74rem;
  color: var(--news-gold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.topic-card__face--back p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--news-reading);
}

.topic-card__link {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--news-mono);
  font-size: 0.8rem;
  color: var(--news-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 178, 62, 0.5);
  padding-bottom: 3px;
  transition: border-color 0.2s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.topic-card__link:hover {
  border-bottom-color: var(--news-violet);
  color: var(--news-violet);
}

/* ============ 03 分类更新速报 ============ */
.page-news__heatmap {
  background:
    radial-gradient(ellipse at 10% 82%, rgba(245, 178, 62, 0.08), transparent 42%),
    radial-gradient(ellipse at 90% 10%, rgba(123, 92, 255, 0.12), transparent 36%),
    var(--news-ink);
  padding-block: 110px 124px;
}

.heatmap-layout {
  display: grid;
  gap: 40px;
}

.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.heatmap-cell {
  --alpha: calc(0.16 + var(--heat, 1) * 0.052);

  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 108px;
  padding: 16px 14px;
  border-radius: 14px;
  background:
    linear-gradient(145deg,
      rgb(245 178 62 / var(--alpha)),
      rgb(123 92 255 / calc(var(--alpha) * 0.5))
    ),
    var(--news-cobalt);
  border: 1px solid rgba(198, 205, 218, 0.2);
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1)), transform 0.25s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.heatmap-cell::before {
  content: "";
  position: absolute;
  top: -26px;
  right: -26px;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: rgba(255, 255, 255, calc(var(--alpha) * 0.28));
  opacity: 0;
  transition: opacity 0.25s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.heatmap-cell:hover {
  border-color: var(--news-gold);
  transform: translateY(-4px);
  z-index: 2;
}

.heatmap-cell:hover::before {
  opacity: 1;
}

.heatmap-cell__name {
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--news-paper);
  letter-spacing: -0.01em;
}

.heatmap-cell__meta {
  font-family: var(--news-mono);
  font-size: 0.74rem;
  color: rgba(247, 249, 252, 0.82);
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.heatmap-cell__count {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--news-gold);
}

.heatmap-cell__tip {
  font-family: var(--news-mono);
  font-size: 0.68rem;
  color: rgba(247, 249, 252, 0.62);
  margin-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-top: 6px;
}

.heatmap-cell:hover .heatmap-cell__tip {
  color: var(--news-reading);
}

.heatmap-visual {
  display: grid;
  gap: 16px;
  align-content: start;
}

.heatmap-visual img {
  width: 100%;
  border-radius: 18px;
  border: 1px solid rgba(198, 205, 218, 0.24);
}

.heatmap-visual__note {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.76;
  color: var(--news-silver);
  background: rgba(23, 49, 92, 0.32);
  border-left: 3px solid var(--news-gold);
  padding: 14px 16px;
  border-radius: 0 12px 12px 0;
}

.heatmap-visual__link {
  display: inline-block;
  width: fit-content;
  font-family: var(--news-mono);
  font-size: 0.8rem;
  color: var(--news-gold);
  text-decoration: none;
  border: 1px solid rgba(245, 178, 62, 0.34);
  border-radius: 999px;
  padding: 8px 18px;
  transition: background 0.25s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1)), color 0.25s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
}

.heatmap-visual__link:hover {
  background: var(--news-gold);
  color: var(--news-ink);
}

/* ============ 桌面端增强 ============ */
@media (min-width: 760px) {
  .news-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.52fr);
    align-items: end;
    gap: 40px;
  }

  .news-hero__lede-wrap {
    justify-self: end;
    padding-top: 0;
    padding-left: 34px;
    border-left: 1px solid rgba(245, 178, 62, 0.36);
    margin-bottom: 8px;
  }

  .heatmap-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .heatmap-cell {
    min-height: 120px;
  }

  .observe-aside__stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-news .section-heading {
    margin-bottom: 62px;
  }

  .news-hero__axis {
    flex-wrap: nowrap;
    overflow: hidden;
    mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
  }

  .observe-layout {
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.65fr);
    gap: 56px;
    align-items: start;
  }

  .observe-aside {
    position: sticky;
    top: calc(var(--header-h, 72px) + 28px);
  }

  .observe-aside__stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .topic-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
  }

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

  .topic-card:nth-child(2) {
    grid-column: 3 / 5;
    transform: translateY(34px);
  }

  .topic-card:nth-child(3) {
    grid-column: 5 / 7;
  }

  .heatmap-layout {
    grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.48fr);
    gap: 52px;
    align-items: start;
  }

  .heatmap-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .heatmap-cell {
    min-height: 132px;
    padding: 20px 16px;
  }

  .heatmap-visual {
    position: sticky;
    top: calc(var(--header-h, 72px) + 28px);
  }
}

@media (min-width: 1240px) {
  .heatmap-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .heatmap-cell {
    min-height: 146px;
  }
}

@media (hover: hover) and (min-width: 1024px) {
  .observe-row__summary-wrap {
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    transition: grid-template-rows 0.35s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1)), opacity 0.35s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1)), transform 0.35s var(--ease, 0.25s cubic-bezier(0.4, 0, 0.2, 1));
    transform: translateY(-6px);
  }

  .observe-row__summary {
    overflow: hidden;
    min-height: 0;
  }

  .observe-row:hover .observe-row__summary-wrap,
  .observe-row:focus-within .observe-row__summary-wrap,
  .observe-row:target .observe-row__summary-wrap {
    grid-template-rows: 1fr;
    opacity: 1;
    transform: translateY(0);
  }
}

.page-news {
  --heat: inherit;
}