.page-news {
  color: var(--color-ink);
  font-family: var(--font-body);
  background-color: var(--color-snow);
  background-image:
    linear-gradient(rgba(10, 25, 47, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 25, 47, 0.045) 1px, transparent 1px);
  background-size: 28px 28px;
  overflow-x: hidden;
}

.page-news .container {
  position: relative;
}

.page-news .news-intro {
  position: relative;
  padding-top: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid rgba(10, 25, 47, 0.08);
}

.page-news .news-intro__index {
  position: absolute;
  right: 1rem;
  top: 1rem;
  font-family: var(--font-heading);
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(10, 25, 47, 0.18);
  opacity: 0.7;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.page-news .news-intro__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: 1rem;
}

.page-news .news-intro__count {
  font-size: var(--text-note);
  letter-spacing: 0.04em;
  color: var(--color-deep);
}

.page-news .news-intro h1 {
  font-family: var(--font-heading);
  font-size: var(--text-hero);
  font-weight: 700;
  color: var(--color-space);
  line-height: 0.95;
  margin: 0 0 var(--space-sm);
  max-width: 12ch;
}

.page-news .news-intro__desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-deep);
  max-width: 58ch;
  margin-bottom: 0;
}

.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: var(--space-md) 0 var(--space-lg);
}

.page-news .filter-label {
  font-size: var(--text-note);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-silver);
  margin-right: 0.25rem;
}

.page-news .filter-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 1rem;
  border: 1px solid rgba(10, 25, 47, 0.16);
  border-radius: 999px;
  background: rgba(245, 247, 250, 0.7);
  color: var(--color-ink);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--speed) var(--ease), color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-news .filter-pill:hover,
.page-news .filter-pill.is-active {
  background: var(--color-action);
  border-color: var(--color-action);
  color: var(--color-snow);
}

.page-news .news-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.page-news .news-sidebar {
  border-top: 4px solid var(--color-action);
}

.page-news .news-sidebar__inner {
  position: relative;
  padding: var(--space-md) 0 var(--space-md) 2.4rem;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(10, 25, 47, 0.06);
  border-radius: 0 12px 12px 0;
}

.page-news .news-sidebar__inner::before {
  content: "最新";
  position: absolute;
  left: 0.6rem;
  top: 1rem;
  writing-mode: vertical-rl;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-action);
  letter-spacing: 0.14em;
  line-height: 1;
}

.page-news .news-sidebar__title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-space);
  margin: 0 0 0.5rem;
}

.page-news .news-sidebar p {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--color-deep);
  margin-bottom: 1rem;
}

.page-news .news-sidebar__nav {
  list-style: none;
  padding: 0;
  margin: 0 0 1.2rem;
  display: grid;
  gap: 0.35rem;
}

.page-news .news-sidebar__nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-ink);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.3rem 0;
  border-bottom: 1px dashed rgba(10, 25, 47, 0.12);
  transition: color var(--speed) var(--ease), padding-left var(--speed) var(--ease);
}

.page-news .news-sidebar__nav a::before {
  content: "→";
  color: var(--color-action);
  font-weight: 700;
}

.page-news .news-sidebar__nav a:hover {
  color: var(--color-action);
  padding-left: 0.4rem;
}

.page-news .news-sidebar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

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

.page-news .news-block {
  margin-bottom: var(--space-xl);
  scroll-margin-top: 2rem;
}

.page-news .news-block .section-heading {
  margin-bottom: var(--space-md);
}

.page-news .block-lead {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-deep);
  max-width: 70ch;
  margin: 0 0 var(--space-md);
}

.page-news .timeline {
  position: relative;
  padding-left: 2.2rem;
  display: grid;
  gap: var(--space-md);
}

.page-news .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-action), var(--color-silver));
  opacity: 0.6;
}

.page-news .timeline-item {
  position: relative;
  min-width: 0;
}

.page-news .timeline-marker {
  position: absolute;
  left: -2.2rem;
  top: 1.3rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-action);
  border: 3px solid var(--color-snow);
  box-shadow: 0 0 0 2px rgba(10, 25, 47, 0.08);
}

.page-news .timeline-item--content .timeline-marker {
  background: var(--color-ice);
}

.page-news .timeline-item--service .timeline-marker {
  background: var(--color-silver);
  box-shadow: 0 0 0 2px rgba(10, 25, 47, 0.05);
}

.page-news .timeline-item--security .timeline-marker {
  background: var(--color-deep);
}

.page-news .timeline-card {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(10, 25, 47, 0.08);
  border-left: 3px solid var(--color-action);
  border-radius: 0 10px 10px 0;
  padding: var(--space-sm) var(--space-md);
  backdrop-filter: blur(4px);
  transition: transform var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.page-news .timeline-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(10, 25, 47, 0.08);
}

.page-news .timeline-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.35rem;
}

.page-news .timeline-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-ink);
  background: var(--color-mist);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.page-news .timeline-time {
  font-size: 0.75rem;
  color: var(--color-silver);
}

.page-news .timeline-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-space);
  margin: 0 0 0.35rem;
}

.page-news .timeline-summary {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-deep);
  margin: 0;
}

.page-news .timeline-more {
  margin-top: 0.5rem;
  font-size: 0.85rem;
}

.page-news .timeline-more summary {
  cursor: pointer;
  color: var(--color-action);
  font-weight: 600;
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  list-style: none;
}

.page-news .timeline-more summary::before {
  content: "+";
  font-size: 1rem;
  line-height: 1;
}

.page-news .timeline-more[open] summary::before {
  content: "–";
}

.page-news .timeline-more p {
  margin-top: 0.5rem;
  color: var(--color-ink);
  opacity: 0.85;
  line-height: 1.6;
}

.page-news .version-chart {
  margin: 0 0 var(--space-md);
  background: var(--color-space);
  border-radius: 12px;
  overflow: hidden;
}

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

.page-news .version-compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.page-news .version-column {
  padding: var(--space-md);
  border-radius: 0 12px 12px 0;
  border-left-width: 4px;
  border-left-style: solid;
}

.page-news .version-column--old {
  background: var(--color-mist);
  border-left-color: var(--color-silver);
}

.page-news .version-column--new {
  background: var(--color-space);
  border-left-color: var(--color-action);
  color: var(--color-snow);
}

.page-news .version-column h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.2rem;
}

.page-news .version-column p {
  margin: 0 0 0.6rem;
  font-size: 0.875rem;
  opacity: 0.8;
}

.page-news .version-column ul {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
  line-height: 1.6;
}

.page-news .index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  align-items: center;
}

.page-news .index-text p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-deep);
  margin: 0 0 0.75rem;
}

.page-news .index-map {
  margin: 0;
  background: var(--color-space);
  border-radius: 12px;
  overflow: hidden;
}

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

.page-news .archive-intro p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-deep);
  max-width: 72ch;
}

.page-news .archive-chart {
  margin: var(--space-md) 0;
  background: var(--color-mist);
  border-radius: 12px;
  overflow: hidden;
}

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

.page-news .archive-sample {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(10, 25, 47, 0.08);
  padding: var(--space-md);
  border-radius: 0 12px 12px 0;
}

.page-news .archive-sample h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-space);
  margin: 0 0 0.5rem;
}

.page-news .archive-list {
  margin: 0;
  display: grid;
}

.page-news .archive-list div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.3rem;
  padding: 0.85rem 0;
  border-bottom: 1px dashed rgba(10, 25, 47, 0.12);
}

.page-news .archive-list div:last-child {
  border-bottom: none;
}

.page-news .archive-list dt {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--color-action);
  letter-spacing: 0.04em;
}

.page-news .archive-list dd {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-deep);
}

.page-news .news-bg-wave {
  display: none;
}

@media (min-width: 700px) {
  .page-news .version-compare {
    grid-template-columns: 1fr 1fr;
  }

  .page-news .index-grid {
    grid-template-columns: 1fr 0.9fr;
  }

  .page-news .archive-list div {
    grid-template-columns: 120px 1fr;
    gap: 1rem;
  }
}

@media (min-width: 900px) {
  .page-news .news-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: var(--space-lg);
    align-items: start;
  }

  .page-news .news-sidebar__inner {
    position: sticky;
    top: 2rem;
  }
}

@media (min-width: 1100px) {
  .page-news .news-bg-wave {
    display: block;
    position: absolute;
    right: -3rem;
    top: 10rem;
    width: 220px;
    height: auto;
    opacity: 0.28;
    pointer-events: none;
    z-index: 0;
  }
}