.page-news {
  background: var(--snow);
  color: var(--text-dark);
}

.page-news__inner {
  padding-top: 2.5rem;
}

.page-news .breadcrumb {
  margin-bottom: 2rem;
}

.page-news__header {
  max-width: 820px;
  margin: 1rem 0 3rem;
}

.page-news__header h1 {
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 900;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.25;
  color: var(--blue);
  margin: 0.5rem 0 1.25rem;
  letter-spacing: -0.01em;
}

.page-news__lede {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--gray);
  border-left: 4px solid var(--yellow);
  padding-left: 1.25rem;
  margin: 0;
}

.page-news__updates .section-head,
.page-news__timeline .section-head,
.page-news__features .section-head {
  margin-bottom: 2rem;
}

.page-news .news-feed {
  margin-top: 1.5rem;
}

.page-news .news-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.page-news .news-filter-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 700;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
  color: var(--text-dark);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.page-news .news-filter-tag:hover {
  transform: translateY(-1px);
}

.page-news .news-filter-tag--update {
  border-color: var(--blue);
  color: var(--blue);
}

.page-news .news-filter-tag--function {
  border-color: var(--red);
  color: var(--red);
}

.page-news .news-filter-tag--operation {
  border-color: var(--green);
  color: var(--green);
}

.page-news .news-filter-tag--subscribe {
  border-color: var(--yellow);
  color: #a67c1e;
}

.page-news #nf-all:checked ~ .news-filters label[for="nf-all"],
.page-news #nf-update:checked ~ .news-filters label[for="nf-update"],
.page-news #nf-function:checked ~ .news-filters label[for="nf-function"] {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

.page-news #nf-operation:checked ~ .news-filters label[for="nf-operation"] {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.page-news #nf-subscribe:checked ~ .news-filters label[for="nf-subscribe"] {
  background: var(--yellow);
  border-color: var(--yellow);
  color: #22262b;
}

.page-news .news-filter-input:checked ~ .news-list .news-item {
  display: none;
}

.page-news #nf-all:checked ~ .news-list .news-item {
  display: flex;
}

.page-news #nf-update:checked ~ .news-list .news-item[data-cat="update"],
.page-news #nf-function:checked ~ .news-list .news-item[data-cat="function"],
.page-news #nf-operation:checked ~ .news-list .news-item[data-cat="operation"],
.page-news #nf-subscribe:checked ~ .news-list .news-item[data-cat="subscribe"] {
  display: flex;
}

.page-news .news-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  align-items: flex-start;
}

.page-news .news-item:first-child {
  border-top: 1px solid var(--line);
}

.page-news .news-item__icon {
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
}

.page-news .news-item__icon img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: block;
  object-fit: cover;
}

.page-news .news-item__body {
  flex: 1;
  min-width: 0;
}

.page-news .news-item__meta {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.4rem;
}

.page-news .news-item__cat {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  white-space: nowrap;
}

.page-news .news-item__cat--update {
  background: rgba(27, 90, 141, 0.12);
  color: var(--blue);
}

.page-news .news-item__cat--function {
  background: rgba(200, 75, 49, 0.12);
  color: var(--red);
}

.page-news .news-item__cat--operation {
  background: rgba(46, 139, 87, 0.12);
  color: var(--green);
}

.page-news .news-item__cat--subscribe {
  background: rgba(229, 163, 59, 0.18);
  color: #a67c1e;
}

.page-news .news-item__time {
  font-size: 0.82rem;
  color: var(--gray);
}

.page-news .news-item__body h3 {
  font-family: "Noto Sans SC", sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin: 0 0 0.4rem;
  line-height: 1.4;
}

.page-news .news-item__body p {
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--gray);
  margin: 0;
}

.page-news .timeline-banner {
  margin: 2rem 0 1.2rem;
  border-radius: var(--radius);
  overflow: hidden;
  line-height: 0;
}

.page-news .timeline-banner img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-news .timeline-scroll {
  position: relative;
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding: 2.5rem 0.5rem 1.5rem;
  scroll-snap-type: x proximity;
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news .timeline-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  min-width: 1000px;
  pointer-events: none;
  z-index: 0;
}

.page-news .timeline__node {
  flex: 0 0 170px;
  scroll-snap-align: start;
  position: relative;
  z-index: 1;
  padding-top: 28px;
}

.page-news .timeline__node details {
  background: var(--snow);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.8rem 0.9rem;
  transition: box-shadow 0.25s ease;
}

.page-news .timeline__node details[open] {
  box-shadow: 0 8px 24px rgba(20, 60, 92, 0.1);
}

.page-news .timeline__node summary {
  list-style: none;
  cursor: pointer;
  position: relative;
}

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

.page-news .timeline__node summary::before {
  content: "";
  position: absolute;
  top: -28px;
  left: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--node-color, var(--blue));
  border: 3px solid var(--snow);
  box-shadow: 0 0 0 2px var(--node-color, var(--blue));
}

.page-news .timeline__node--new {
  --node-color: var(--red);
}

.page-news .timeline__node--stable {
  --node-color: var(--blue);
}

.page-news .timeline__node--fix {
  --node-color: var(--green);
}

.page-news .timeline__node--note {
  --node-color: var(--yellow);
}

.page-news .timeline__version {
  display: block;
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 900;
  font-size: 1.05rem;
  color: var(--text-dark);
}

.page-news .timeline__label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--gray);
  background: rgba(108, 112, 119, 0.1);
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
  margin-top: 0.3rem;
}

.page-news .timeline__node ul {
  margin: 0.6rem 0 0;
  padding-left: 1rem;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--gray);
}

.page-news .timeline__node li {
  margin-bottom: 0.25rem;
}

.page-news__broadcast {
  position: relative;
  overflow: hidden;
}

.page-news .broadcast-wrap {
  display: grid;
  gap: 1.5rem;
  align-items: center;
}

.page-news .broadcast__aside img {
  border-radius: 50%;
  width: 120px;
  height: 120px;
  object-fit: cover;
  display: block;
  border: 3px solid var(--yellow);
  padding: 8px;
  background: #fff;
}

.page-news .broadcast__content h2 {
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 900;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  color: var(--blue-dark);
  margin: 0.4rem 0 0.9rem;
  line-height: 1.3;
}

.page-news .broadcast__content p {
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--gray);
  max-width: 60ch;
}

.page-news .broadcast__list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.25rem;
  display: grid;
  gap: 0.5rem;
}

.page-news .broadcast__list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.94rem;
  color: var(--text-dark);
}

.page-news .broadcast__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 0.6em;
  height: 0.6em;
  background: var(--green);
  border-radius: 50%;
}

.page-news .feature-grid {
  display: grid;
  gap: 2rem;
}

.page-news .feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.page-news .feature-card:hover {
  box-shadow: 0 12px 32px rgba(20, 60, 92, 0.1);
  transform: translateY(-2px);
}

.page-news .feature-card img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-news .feature-card__body {
  padding: 1.5rem;
}

.page-news .feature-card .tag {
  display: inline-block;
  background: var(--cream);
  color: var(--terra);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.22rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 0.7rem;
}

.page-news .feature-card h3 {
  font-family: "Noto Sans SC", sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-dark);
  margin: 0 0 0.5rem;
  line-height: 1.4;
}

.page-news .feature-card p {
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--gray);
  margin: 0 0 0.8rem;
}

.page-news .feature-card details {
  border-top: 1px dashed var(--line);
  padding-top: 0.8rem;
}

.page-news .feature-card summary {
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--blue);
  list-style: none;
  position: relative;
  display: inline-block;
  padding-right: 1.2rem;
}

.page-news .feature-card summary::-webkit-details-marker {
  display: none;
}

.page-news .feature-card summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue);
}

.page-news .feature-card details[open] summary::after {
  content: "−";
}

.page-news .feature-card details p {
  margin-top: 0.7rem;
}

@media (min-width: 600px) {
  .page-news .broadcast-wrap {
    grid-template-columns: 140px 1fr;
  }
}

@media (min-width: 900px) {
  .page-news__inner {
    padding-top: 3rem;
  }

  .page-news .news-feed {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 2.5rem;
    align-items: start;
  }

  .page-news .news-filters {
    flex-direction: column;
    align-content: flex-start;
    position: sticky;
    top: 96px;
    gap: 0.5rem;
    margin-bottom: 0;
  }

  .page-news .news-item__body p {
    max-width: 68ch;
  }

  .page-news .feature-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .page-news .broadcast-wrap {
    grid-template-columns: 220px 1fr;
    gap: 3rem;
  }

  .page-news .broadcast__aside {
    display: flex;
    justify-content: center;
  }
}