.page-news {
  --news-gold: var(--color-gold);
  --news-purple: var(--color-purple);
  --news-cyan: var(--color-cyan);
  position: relative;
  isolation: isolate;
  background:
    radial-gradient(720px 360px at 82% 4%, rgba(106, 90, 205, 0.16), transparent 62%),
    radial-gradient(540px 280px at 8% 30%, rgba(0, 212, 255, 0.07), transparent 60%),
    var(--color-primary);
  padding-bottom: 4rem;
  overflow-x: clip;
}

.page-news::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
}

.page-news__container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 0;
}

/* 面包屑与页头 */
.page-news .breadcrumb {
  padding: 1.25rem 0 0.25rem;
  color: var(--color-muted);
}

.page-news__hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 2.6rem 0 2.4rem;
  margin-bottom: 2.4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.page-news__hero::after {
  content: "NEWS";
  position: absolute;
  right: 1rem;
  top: 2.2rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 4rem;
  line-height: 1;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.page-news__hero-copy {
  position: relative;
  z-index: 1;
  max-width: 44rem;
}

.page-news__hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--color-text);
  margin: 0.7rem 0 1rem;
}

.page-news__hero-desc {
  margin: 0;
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.page-news__hero-status {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 0.65rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-muted);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.page-news__status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
}

.page-news__status-divider {
  width: 1px;
  height: 14px;
  background: rgba(255, 255, 255, 0.16);
}

/* 左右布局栅格 */
.page-news__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.6rem;
  align-items: start;
}

@media (min-width: 1024px) {
  .page-news__layout {
    grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
    gap: 3rem;
  }

  .page-news__sidebar {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

/* 分类筛选胶囊 */
.page-news__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.8rem;
}

.page-news__filter {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  color: var(--color-muted);
  background: transparent;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition:
    background-color 0.25s var(--ease),
    color 0.25s var(--ease),
    border-color 0.25s var(--ease),
    transform 0.2s var(--ease);
}

.page-news__filter:hover {
  border-color: rgba(245, 197, 24, 0.6);
  color: var(--color-text);
  transform: translateY(-1px);
}

.page-news__filter-count {
  font-size: 0.72rem;
  color: currentColor;
  opacity: 0.7;
  font-variant-numeric: tabular-nums;
}

#filter-all:checked ~ .page-news__filters label[for="filter-all"],
#filter-update:checked ~ .page-news__filters label[for="filter-update"],
#filter-guide:checked ~ .page-news__filters label[for="filter-guide"],
#filter-compare:checked ~ .page-news__filters label[for="filter-compare"],
#filter-insight:checked ~ .page-news__filters label[for="filter-insight"] {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-primary);
  font-weight: 600;
}

#filter-all:focus-visible ~ .page-news__filters label[for="filter-all"],
#filter-update:focus-visible ~ .page-news__filters label[for="filter-update"],
#filter-guide:focus-visible ~ .page-news__filters label[for="filter-guide"],
#filter-compare:focus-visible ~ .page-news__filters label[for="filter-compare"],
#filter-insight:focus-visible ~ .page-news__filters label[for="filter-insight"] {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

#filter-update:checked ~ .page-news__list .page-news__card:not([data-category="update"]),
#filter-guide:checked ~ .page-news__list .page-news__card:not([data-category="guide"]),
#filter-compare:checked ~ .page-news__list .page-news__card:not([data-category="compare"]),
#filter-insight:checked ~ .page-news__list .page-news__card:not([data-category="insight"]) {
  display: none;
}

/* 文章卡片 */
.page-news__list {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

.page-news__card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--color-glass);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  animation: pageNewsCardIn 0.35s var(--ease) backwards;
  transition:
    transform 0.3s var(--ease),
    border-color 0.3s var(--ease),
    box-shadow 0.3s var(--ease);
}

.page-news__card:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 197, 24, 0.4);
  box-shadow: 0 18px 40px rgba(7, 15, 30, 0.5);
}

@keyframes pageNewsCardIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 参差排列 */
.page-news__card:nth-child(2) {
  margin-left: 1.6rem;
}

.page-news__card:nth-child(4) {
  margin-left: 0.9rem;
}

.page-news__card-media {
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
}

.page-news__card--featured .page-news__card-media {
  aspect-ratio: 2 / 1;
}

.page-news__card--featured .page-news__card-media::before {
  content: "置顶";
  position: absolute;
  top: 0.9rem;
  left: 0.9rem;
  z-index: 2;
  background: var(--color-gold);
  color: var(--color-primary);
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
}

.page-news__card-media::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  z-index: 2;
  width: 2.8rem;
  height: 2px;
  background: var(--color-gold);
}

.page-news__card-img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
}

.page-news__card:not(.page-news__card--featured) .page-news__card-media {
  aspect-ratio: 16 / 9;
}

.page-news__card:not(.page-news__card--featured) .page-news__card-img {
  object-fit: cover;
}

@media (min-width: 720px) {
  .page-news__card:not(.page-news__card--featured) {
    grid-template-columns: 184px minmax(0, 1fr);
  }

  .page-news__card:not(.page-news__card--featured) .page-news__card-media {
    aspect-ratio: auto;
    min-height: 100%;
  }

  .page-news__card:not(.page-news__card--featured) .page-news__card-img {
    height: 100%;
  }
}

.page-news__card-content {
  display: flex;
  flex-direction: column;
  padding: 1.35rem 1.4rem 1.4rem;
}

.page-news__card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 0.7rem;
}

.page-news__index-num {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-gold);
  font-variant-numeric: tabular-nums;
}

.page-news__index-num em {
  color: var(--color-muted);
  font-style: normal;
  font-weight: 600;
  margin-left: 0.12rem;
}

.page-news__chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-right: auto;
  padding: 0.22rem 0.7rem;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.24);
  color: var(--color-cyan);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 999px;
}

.page-news__chip svg {
  display: block;
}

.page-news__date {
  color: var(--color-muted);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.page-news__card-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 0.5rem;
}

.page-news__card-title a {
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-news__card-title a:hover {
  color: var(--color-gold);
}

.page-news__card-desc {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  margin: 0 0 0.85rem;
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-news__card--featured .page-news__card-desc {
  -webkit-line-clamp: 3;
}

.page-news__expand {
  margin: 0 0 0.55rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.page-news__expand summary {
  cursor: pointer;
  color: var(--color-cyan);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  font-weight: 500;
  user-select: none;
}

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

.page-news__expand summary::before {
  content: "＋";
  color: var(--color-gold);
  font-weight: 800;
  font-size: 0.8rem;
  line-height: 1;
}

.page-news__expand[open] summary::before {
  content: "－";
}

.page-news__expand-body {
  margin: 0.6rem 0 0;
  padding-left: 1rem;
  border-left: 2px solid rgba(245, 197, 24, 0.5);
  color: var(--color-muted);
  font-size: 0.86rem;
  line-height: 1.7;
}

.page-news__readmore {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: auto;
  color: var(--color-gold);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: gap 0.25s var(--ease);
}

.page-news__readmore:hover {
  gap: 0.6rem;
}

/* 侧边栏 */
.page-news__panel {
  background: var(--color-glass);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  padding: 1.5rem 1.4rem;
  margin-bottom: 1.5rem;
}

.page-news__panel:last-child {
  margin-bottom: 0;
}

.page-news__panel-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-text);
  margin: 0 0 0.2rem;
}

.page-news__panel-note {
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-muted);
  font-size: 0.78rem;
}

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

.page-news__rank-item {
  display: flex;
  gap: 0.9rem;
  padding: 0.85rem 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
  transition: background-color 0.2s var(--ease);
}

.page-news__rank-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-news__rank-item:hover {
  background: rgba(245, 197, 24, 0.04);
}

.page-news__rank-num {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.35rem;
  line-height: 1.2;
  min-width: 1.7rem;
  color: var(--color-gold);
  opacity: 0.85;
  font-variant-numeric: tabular-nums;
  transition: opacity 0.2s var(--ease);
}

.page-news__rank-item:hover .page-news__rank-num {
  opacity: 1;
}

.page-news__rank-content {
  min-width: 0;
}

.page-news__rank-title {
  display: block;
  color: var(--color-text);
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.45;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-news__rank-title:hover {
  color: var(--color-gold);
}

.page-news__rank-meta {
  display: block;
  margin-top: 0.3rem;
  color: var(--color-muted);
  font-size: 0.72rem;
}

/* 订阅提示 */
.page-news__subscribe-desc {
  margin: 0.6rem 0 1rem;
  color: var(--color-muted);
  font-size: 0.85rem;
  line-height: 1.7;
}

.page-news__subscribe-box {
  display: flex;
  gap: 0.5rem;
}

.page-news__subscribe-input {
  flex: 1;
  min-width: 0;
  padding: 0.6rem 0.8rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--color-text);
  font-size: 0.84rem;
  border-radius: 0;
  transition: border-color 0.25s var(--ease);
}

.page-news__subscribe-input::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

.page-news__subscribe-input:focus {
  outline: none;
  border-color: var(--color-gold);
}

.page-news__subscribe-btn {
  flex-shrink: 0;
  padding: 0.55rem 1.1rem;
  background: var(--color-gold);
  border: none;
  border-radius: 0;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition:
    transform 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}

.page-news__subscribe-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(245, 197, 24, 0.25);
}

/* 响应式与动效适配 */
@media (min-width: 720px) {
  .page-news__hero {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }

  .page-news__hero::after {
    right: 3rem;
    top: 1rem;
    font-size: 7rem;
  }

  .page-news__card:nth-child(2) {
    margin-left: 2rem;
  }

  .page-news__card:nth-child(4) {
    margin-left: 1.2rem;
  }
}

@media (max-width: 719px) {
  .page-news__card:nth-child(2),
  .page-news__card:nth-child(4) {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news__card {
    animation: none;
  }

  .page-news__card:hover {
    transform: none;
  }

  .page-news__subscribe-btn:hover {
    transform: none;
  }
}