.page-news {
  --news-accent: #39ff14;
  --news-surface: #112240;
  --news-surface-2: #0d1b2d;
  --news-border: #c0c0c0;
  --news-text: #e6f1ff;
  --news-muted: #8892b0;
  --news-bg-deep: #060e1c;
  --news-blue: #00b4d8;
  --news-violet: #7b2ff7;
  --news-rail-width: 288px;
  color: var(--news-text);
  background:
    linear-gradient(135deg, transparent 0%, transparent 55%, rgba(123, 47, 247, 0.08) 100%),
    var(--color-bg-deep, var(--news-bg-deep));
}

.news-shell {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.news-editorial {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding: var(--space-6) 0;
}

/* ---------- 左侧归档索引 ---------- */
.news-rail {
  background: transparent;
  border: 0;
  order: 2;
}

.rail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--news-border);
  margin-bottom: var(--space-4);
}

.rail-label {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rail-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.85rem;
  color: var(--news-muted);
  border: 1px solid var(--news-border);
  padding: 0.25rem 0.6rem;
}

.rail-status .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--news-accent);
  flex-shrink: 0;
}

.rail-index {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.index-group {
  padding: 0;
}

.index-group__title {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--news-muted);
  margin: 0 0 var(--space-3);
  border-left: 2px solid var(--news-accent);
  padding-left: var(--space-3);
}

.index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.index-list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-2);
  border-bottom: 1px solid rgba(192, 192, 192, 0.18);
  cursor: default;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.index-list__item:last-child {
  border-bottom: 0;
}

.index-list__item:hover,
.index-list__item.is-active {
  background: rgba(57, 255, 20, 0.06);
  border-left: 2px solid var(--news-accent);
}

.index-list__year {
  font-size: 0.9rem;
  color: var(--news-text);
}

.index-list__count {
  font-size: 0.75rem;
  color: var(--news-muted);
  background: var(--news-surface);
  border: 1px solid var(--news-border);
  border-radius: 2px;
  padding: 0.1rem 0.45rem;
  font-variant-numeric: tabular-nums;
}

.index-list__item.is-active .index-list__count {
  color: var(--news-accent);
  border-color: var(--news-accent);
}

.rail-foot {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(192, 192, 192, 0.25);
}

.rail-foot__text {
  font-size: 0.75rem;
  color: var(--news-muted);
  letter-spacing: 0.05em;
}

/* ---------- 右侧主内容 ---------- */
.news-main {
  order: 1;
  min-width: 0;
}

.page-head {
  padding: var(--space-4) 0 var(--space-6);
  border-bottom: 1px solid var(--news-border);
  position: relative;
}

.page-head::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  background: var(--news-accent);
  margin-top: var(--space-6);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-size: 0.8125rem;
  color: var(--news-muted);
}

.breadcrumb__item {
  color: var(--news-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumb__item:hover {
  color: var(--news-accent);
}

.breadcrumb__item--current {
  color: var(--news-text);
  border: 1px solid var(--news-border);
  padding: 0.15rem 0.5rem;
}

.breadcrumb__sep {
  color: var(--news-border);
}

.page-head__title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 0.95;
  margin: 0 0 var(--space-4);
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--news-text);
}

.page-head__lead {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--news-muted);
  margin: 0;
  max-width: 60ch;
}

.lead-mark {
  display: inline-block;
  color: var(--news-text);
  border-bottom: 1px dashed var(--news-accent);
  margin-right: 0.2em;
}

/* ---------- 版本更新节奏 ---------- */
.news-timeline {
  padding: var(--space-6) 0;
  border-bottom: 1px solid rgba(192, 192, 192, 0.3);
  position: relative;
}

.timeline-media {
  width: 100%;
  margin-bottom: var(--space-6);
  overflow: hidden;
  background: var(--news-surface);
  border-left: 3px solid var(--news-accent);
}

.timeline-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.timeline-head {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.timeline-head .section-kicker {
  margin: 0;
}

.section-kicker {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--news-accent);
  border: 1px solid var(--news-accent);
  padding: 0.2rem 0.55rem;
  margin: 0 0 var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.timeline-bars {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 36px;
  margin: var(--space-6) 0 var(--space-4);
  border-bottom: 1px solid rgba(192, 192, 192, 0.25);
  padding-bottom: var(--space-2);
}

.timeline-bar {
  display: block;
  height: 12px;
  background: var(--news-surface);
  transition: background 0.2s ease;
}

.timeline-bar--v1 {
  width: 18%;
  height: 12px;
  background: rgba(192, 192, 192, 0.3);
}

.timeline-bar--v2 {
  width: 32%;
  height: 22px;
  background: rgba(0, 180, 216, 0.4);
}

.timeline-bar--v3 {
  width: 46%;
  height: 34px;
  background: var(--news-accent);
}

.timeline-note {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--news-muted);
  margin: 0;
  max-width: 70ch;
}

/* ---------- 区块通用 ---------- */
.section {
  padding: var(--space-6) 0;
  border-bottom: 1px solid rgba(192, 192, 192, 0.2);
}

.section:last-child {
  border-bottom: 0;
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.section-meta {
  font-size: 0.75rem;
  color: var(--news-muted);
  border: 1px solid var(--news-border);
  padding: 0.2rem 0.55rem;
  white-space: nowrap;
}

.section-link {
  font-size: 0.8125rem;
  color: var(--news-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
  white-space: nowrap;
}

.section-link:hover {
  border-bottom-color: var(--news-blue);
}

/* ---------- 最新动态 ---------- */
.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.news-item {
  display: flex;
  gap: var(--space-4);
  background: var(--news-surface);
  border: 1px solid rgba(192, 192, 192, 0.2);
  padding: var(--space-4);
  position: relative;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.news-item:hover {
  border-color: var(--news-accent);
  transform: translateY(-2px);
}

.news-item__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--news-accent);
  flex-shrink: 0;
  margin-top: 0.4rem;
  box-shadow: 0 0 6px rgba(57, 255, 20, 0.6);
}

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

.news-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--news-muted);
  border: 1px solid var(--news-border);
  padding: 0.15rem 0.45rem;
  border-radius: 2px;
}

.tag--green {
  color: var(--news-accent);
  border-color: var(--news-accent);
  background: rgba(57, 255, 20, 0.06);
}

.news-item__title {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 var(--space-2);
  color: var(--news-text);
}

.news-item__summary {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--news-muted);
  margin: 0 0 var(--space-3);
}

.news-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
}

.news-item__anchor {
  font-size: 0.7rem;
  color: var(--news-blue);
  background: rgba(0, 180, 216, 0.08);
  padding: 0.15rem 0.4rem;
}

/* ---------- 版本归档 ---------- */
.archive-toggle {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.filter-btn {
  appearance: none;
  background: var(--news-bg-deep);
  border: 1px solid var(--news-border);
  color: var(--news-muted);
  font-size: 0.75rem;
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.filter-btn:hover {
  border-color: var(--news-accent);
  color: var(--news-accent);
}

.filter-btn.is-active {
  color: var(--news-accent);
  border-color: var(--news-accent);
  background: rgba(57, 255, 20, 0.08);
}

.archive-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.archive-card {
  position: relative;
  background: transparent;
  padding-top: 0;
}

.archive-card__fold {
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 24px;
  background: linear-gradient(225deg, transparent 50%, rgba(6, 14, 28, 1) 50%), var(--news-border);
  z-index: 1;
}

.archive-card__inner {
  background: var(--news-surface);
  border: 1px solid rgba(192, 192, 192, 0.35);
  padding: var(--space-6);
  position: relative;
  box-shadow: 6px 6px 0 rgba(6, 14, 28, 0.5);
}

.archive-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(192, 192, 192, 0.25);
}

.archive-card__version {
  font-family: var(--font-display);
  font-size: 2.2rem;
  line-height: 1;
  color: var(--news-text);
  -webkit-text-stroke: 1px var(--news-accent);
  letter-spacing: 0.04em;
}

.archive-card__state {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.72rem;
  color: var(--news-muted);
  letter-spacing: 0.08em;
  border: 1px solid var(--news-border);
  padding: 0.2rem 0.5rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--news-accent);
  display: inline-block;
  flex-shrink: 0;
}

.status-dot--metal {
  background: var(--news-muted);
}

.archive-card__title {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 var(--space-3);
  line-height: 1.35;
  color: var(--news-text);
}

.archive-card__desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--news-muted);
  margin: 0 0 var(--space-4);
  max-width: 62ch;
}

.archive-card__list {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.archive-card__list li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--news-text);
}

.archive-card__list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--news-accent);
  font-size: 0.75rem;
}

.archive-card__media {
  margin-top: var(--space-4);
  border: 1px solid var(--news-border);
  overflow: hidden;
  max-width: 520px;
}

.archive-card__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 栏目调整记录 ---------- */
.adjust-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.adjust-media {
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--news-border);
  border-left: 3px solid var(--news-blue);
  background: var(--news-surface);
}

.adjust-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.adjust-content {
  min-width: 0;
}

.adjust-lead {
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.3;
  margin: 0 0 var(--space-6);
  padding: var(--space-4);
  background: rgba(57, 255, 20, 0.05);
  border: 1px solid var(--news-accent);
}

.adjust-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.adjust-step {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--news-surface-2);
  border: 1px solid rgba(192, 192, 192, 0.15);
  transition: border-color 0.2s ease;
}

.adjust-step:hover {
  border-color: var(--news-blue);
}

.adjust-step__num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--news-blue);
  line-height: 1;
  flex-shrink: 0;
}

.adjust-step__text h3 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 var(--space-2);
  color: var(--news-text);
}

.adjust-step__text p {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--news-muted);
  margin: 0;
}

.adjust-note {
  margin: var(--space-6) 0 0;
  font-size: 0.8125rem;
  color: var(--news-muted);
  border-left: 2px solid var(--news-accent);
  padding-left: var(--space-4);
  line-height: 1.6;
}

/* ---------- 适配专题 ---------- */
.adapt-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.adapt-card {
  background: var(--news-surface);
  border: 1px solid rgba(192, 192, 192, 0.25);
  padding: var(--space-6);
  transition: border-color 0.2s ease;
}

.adapt-card:hover {
  border-color: var(--news-accent);
}

.adapt-card--primary {
  padding: 0;
  display: flex;
  flex-direction: column;
}

.adapt-card__media {
  width: 100%;
  overflow: hidden;
  border-bottom: 1px solid var(--news-border);
}

.adapt-card__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.adapt-card__body {
  padding: var(--space-6);
}

.adapt-card__body h3,
.adapt-card--side h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 var(--space-3);
  color: var(--news-text);
}

.adapt-card__body p,
.adapt-card--side p {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--news-muted);
  margin: 0 0 var(--space-4);
}

.adapt-card__status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.78rem;
  color: var(--news-accent);
  border: 1px solid var(--news-accent);
  padding: 0.25rem 0.6rem;
  display: inline-flex;
}

.adapt-list {
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.adapt-list li {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--news-text);
  border-bottom: 1px dashed rgba(192, 192, 192, 0.2);
  padding-bottom: var(--space-2);
}

.adapt-list li::before {
  content: "✓ ";
  color: var(--news-accent);
  font-weight: 700;
}

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border: 1px solid var(--news-border);
  color: var(--news-text);
  background: transparent;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.btn:hover {
  border-color: var(--news-accent);
  color: var(--news-accent);
}

.btn--primary {
  border-color: var(--news-accent);
  color: var(--news-accent);
  background: rgba(57, 255, 20, 0.06);
}

.btn--primary:hover {
  background: rgba(57, 255, 20, 0.14);
}

.btn--ghost {
  border-color: var(--news-blue);
  color: var(--news-blue);
}

.btn--ghost:hover {
  background: rgba(0, 180, 216, 0.08);
  border-color: var(--news-blue);
}

/* ---------- 底部索引链接 ---------- */
.news-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-6) 0;
  border-bottom: 1px solid rgba(192, 192, 192, 0.2);
}

.news-link {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--news-muted);
  text-decoration: none;
  border: 1px solid rgba(192, 192, 192, 0.3);
  padding: 0.4rem 0.8rem;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.news-link:hover {
  color: var(--news-accent);
  border-color: var(--news-accent);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .news-rail {
    order: 1;
  }

  .news-main {
    order: 2;
  }

  .news-editorial {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-6);
    padding: var(--space-6) 0;
  }

  .news-rail {
    position: sticky;
    top: calc(var(--header-height) + var(--space-4));
    width: var(--news-rail-width);
    flex-shrink: 0;
  }

  .news-main {
    flex: 1;
  }

  .timeline-media {
    max-height: none;
  }

  .adjust-wrap {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .adapt-grid {
    grid-template-columns: 1.3fr 1fr 1fr;
  }

  .adapt-card--primary {
    grid-row: span 2;
  }
}

@media (min-width: 960px) {
  .page-head {
    padding: var(--space-6) 0 var(--space-6);
  }

  .timeline-media__img {
    transition: filter 0.3s ease;
  }

  .archive-card__inner {
    padding: var(--space-6);
  }
}