.page-news {
  --timeline-col: 36px;
  --news-line: rgba(30, 78, 140, 0.18);
}

.page-news__head {
  position: relative;
  padding-top: clamp(2rem, 4vw, 3.2rem);
  padding-bottom: clamp(1.75rem, 3vw, 2.6rem);
  overflow: hidden;
}

.page-news__head::before {
  content: "";
  position: absolute;
  right: -12%;
  top: 0;
  height: 100%;
  width: 34%;
  background: linear-gradient(135deg, var(--color-primary), rgba(30, 78, 140, 0.2));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 24% 100%);
  opacity: 0.08;
  pointer-events: none;
}

.page-news__head::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-primary) 0 35%, var(--color-orange) 35% 60%, var(--color-red) 60% 82%, var(--color-green) 82% 100%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 18px) 100%, 0 100%);
}

.page-news__head-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.25rem;
}

.page-news__head-main {
  min-width: 0;
}

.page-news__kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--color-orange);
  background: rgba(224, 123, 57, 0.1);
  border-left: 3px solid var(--color-orange);
  padding: 0.3rem 0.65rem;
  margin-bottom: 0.9rem;
}

.page-news__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(2rem, 4.2vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.page-news__title-accent {
  display: block;
  margin-top: 0.4em;
  font-size: 0.62em;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  position: relative;
  padding-left: 0.7em;
}

.page-news__title-accent::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.12em;
  bottom: 0.12em;
  width: 0.3em;
  background: var(--color-orange);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.page-news__desc {
  max-width: 42rem;
  margin: 1rem 0 0;
  line-height: 1.7;
  color: var(--color-gray);
}

.page-news__snapshot {
  background: var(--color-cream);
  border: 1px solid rgba(30, 78, 140, 0.12);
  padding: 1rem 1rem 0.85rem;
  align-self: start;
}

.page-news__snapshot-head {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  border-bottom: 1px solid rgba(30, 78, 140, 0.12);
  padding-bottom: 0.7rem;
  margin-bottom: 0.7rem;
}

.page-news__snapshot-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
}

.page-news__snapshot-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  text-align: center;
}

.page-news__snapshot-label {
  font-size: 0.78rem;
  color: var(--color-gray);
}

.page-news__snapshot-item .score {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-ink);
}

.page-news__snapshot-note {
  font-size: 0.76rem;
  color: var(--color-gray);
  text-align: center;
  margin: 0.75rem 0 0;
  padding-top: 0.6rem;
  border-top: 1px dashed rgba(30, 78, 140, 0.14);
}

.page-news__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-top: clamp(1.25rem, 3vw, 2.5rem);
  padding-bottom: var(--space-section);
  align-items: start;
}

.page-news__aside {
  background: var(--color-bg);
  border: 1px solid rgba(30, 78, 140, 0.1);
  padding: 1.15rem;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.page-news__aside-head {
  margin-bottom: 1rem;
}

.page-news__aside-kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--color-orange);
}

.page-news__aside-title {
  margin: 0.3rem 0 0.4rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.45rem;
  color: var(--color-ink);
}

.page-news__aside-desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-gray);
}

.page-news__filter-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
}

.page-news__filter-button {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  width: 100%;
  padding: 0.7rem 0.6rem;
  background: var(--color-cream);
  border: 0;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-ink);
  text-align: left;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
  --btn-accent: var(--color-gray);
}

.page-news__filter-button::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: var(--btn-accent, var(--color-gray));
  z-index: 1;
}

.page-news__filter-button:hover {
  transform: translateX(3px);
  background: var(--color-bg);
}

.page-news__filter-button.is-active {
  background: var(--color-ink);
  color: #fff;
  transform: translateX(3px);
}

.page-news__filter-button[data-filter-trigger="规则说明"],
.page-news__filter-button[data-filter-trigger="全部动态"] {
  --btn-accent: var(--color-primary);
}

.page-news__filter-button[data-filter-trigger="赛事日历"] {
  --btn-accent: var(--color-red);
}

.page-news__filter-button[data-filter-trigger="功能优化"] {
  --btn-accent: var(--color-orange);
}

.page-news__filter-button[data-filter-trigger="数据更新"] {
  --btn-accent: var(--color-green);
}

.page-news__filter-button[data-filter-trigger="服务公告"] {
  --btn-accent: var(--color-gray);
}

.page-news__filter-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  opacity: 0.65;
}

.page-news__filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--color-bg);
  color: var(--color-ink);
  border-radius: 999px;
  padding: 0.1rem 0.42rem;
}

.page-news__filter-button.is-active .page-news__filter-count {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

.page-news__aside-foot {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px dashed rgba(30, 78, 140, 0.18);
}

.page-news__aside-note {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-gray);
}

.page-news__text-link {
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--color-orange);
  transition: border-color 0.2s ease;
}

.page-news__text-link:hover {
  border-color: var(--color-primary);
}

.page-news__badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.page-news__badge {
  font-size: 0.74rem;
  line-height: 1.2;
  color: var(--color-primary);
  background: rgba(30, 78, 140, 0.08);
  border-left: 3px solid var(--color-orange);
  padding: 0.28rem 0.5rem;
}

.page-news__board {
  position: relative;
  display: grid;
  gap: 1.75rem;
  min-width: 0;
}

.page-news__board::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--timeline-col) / 2 - 1px);
  width: 2px;
  background: var(--news-line);
  pointer-events: none;
}

.page-news__item {
  position: relative;
  display: grid;
  grid-template-columns: var(--timeline-col) minmax(0, 1fr);
  align-items: start;
  min-width: 0;
}

.page-news__item::before {
  content: "";
  position: absolute;
  top: 28px;
  left: calc(var(--timeline-col) / 2 - 7px);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-orange);
  border: 4px solid var(--color-bg);
  z-index: 2;
}

.page-news__card {
  display: grid;
  grid-template-columns: 1fr;
  background: var(--color-cream);
  border: 1px solid rgba(30, 78, 140, 0.1);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  min-width: 0;
}

.page-news__media {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  min-width: 0;
}

.page-news__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
  transition: transform 0.4s ease;
}

.page-news__card:hover .page-news__media img {
  transform: scale(1.03);
}

.page-news__body {
  padding: clamp(1.2rem, 2.5vw, 2rem);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.8rem;
  min-width: 0;
}

.page-news__meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.page-news__tag--rule {
  border-left-color: var(--color-primary);
}

.page-news__tag--calendar {
  border-left-color: var(--color-red);
}

.page-news__tag--feature {
  border-left-color: var(--color-orange);
}

.page-news__tag--data {
  border-left-color: var(--color-green);
}

.page-news__tag--service {
  border-left-color: var(--color-gray);
}

.page-news__time {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-gray);
  padding-left: 0.6rem;
  border-left: 1px solid rgba(30, 78, 140, 0.15);
}

.page-news__title-sm {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.1rem, 1.7vw, 1.42rem);
  line-height: 1.3;
  color: var(--color-ink);
}

.page-news__excerpt {
  margin: 0;
  line-height: 1.7;
  font-size: 0.95rem;
  color: var(--color-ink);
  opacity: 0.85;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.page-news__card:hover .page-news__excerpt,
.page-news__item:focus-within .page-news__excerpt {
  display: block;
  -webkit-line-clamp: unset;
}

.page-news__actions {
  margin-top: auto;
  padding-top: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.page-news__actions .btn {
  padding: 0.55rem 1.1rem;
  font-size: 0.85rem;
}

.page-news__read-time {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-gray);
}

.page-news__compact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  align-items: center;
  min-width: 0;
  background: var(--color-bg);
  border: 1px solid rgba(30, 78, 140, 0.1);
  border-left: 6px solid var(--compact-accent, var(--color-primary));
  padding: 1.15rem 1.25rem;
}

.page-news__item--compact[data-filter-value~="规则说明"] {
  --compact-accent: var(--color-primary);
}

.page-news__item--compact[data-filter-value~="赛事日历"] {
  --compact-accent: var(--color-red);
}

.page-news__item--compact[data-filter-value~="功能优化"] {
  --compact-accent: var(--color-orange);
}

.page-news__item--compact[data-filter-value~="数据更新"] {
  --compact-accent: var(--color-green);
}

.page-news__item--compact[data-filter-value~="服务公告"] {
  --compact-accent: var(--color-gray);
}

.page-news__item--compact .page-news__compact-main {
  display: grid;
  gap: 0.5rem;
  min-width: 0;
}

.page-news__more-link {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 2px solid var(--color-orange);
  padding-bottom: 0.1rem;
  transition: border-color 0.2s ease;
  white-space: nowrap;
}

.page-news__more-link:hover {
  border-color: var(--color-primary);
}

@media (min-width: 768px) {
  .page-news__head-grid {
    grid-template-columns: 1fr 280px;
    gap: 2rem;
  }

  .page-news__filter-list {
    grid-template-columns: 1fr;
  }

  .page-news__compact {
    grid-template-columns: 1fr auto;
    gap: 1rem;
  }
}

@media (min-width: 992px) {
  .page-news {
    --timeline-col: 48px;
  }

  .page-news__layout {
    grid-template-columns: minmax(230px, 260px) minmax(0, 1fr);
    gap: 2.5rem;
  }

  .page-news__aside {
    position: sticky;
    top: 5.5rem;
    padding: 1.5rem;
  }

  .page-news__card {
    grid-template-columns: 1fr 1.05fr;
  }

  .page-news__item--reverse .page-news__card {
    grid-template-columns: 1.05fr 1fr;
  }

  .page-news__item--reverse .page-news__media {
    order: 2;
  }

  .page-news__media {
    aspect-ratio: auto;
    align-self: stretch;
  }
}