.page-news {
  --news-rail: 28%;
  --news-gap: clamp(20px, 4vw, 40px);
  background: var(--white);
  color: var(--ink);
  padding-bottom: 64px;
}

.page-news .breadcrumb {
  margin: 20px 0 0;
  font-size: 13px;
  color: var(--graphite);
}

.page-news .breadcrumb a {
  color: var(--graphite);
  text-decoration: none;
}

.page-news .breadcrumb a:hover {
  color: var(--grass);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  display: grid;
  gap: 32px;
  padding: 26px 0 40px;
  border-bottom: var(--line);
}

.page-news .news-hero-main h1 {
  margin: 12px 0 18px;
  font-size: clamp(28px, 6.4vw, 54px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-news .news-lead {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.9;
  color: var(--graphite);
}

.page-news .cadence {
  list-style: none;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: var(--line);
  display: grid;
  gap: 12px;
  max-width: 560px;
}

.page-news .cadence li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  font-size: 14px;
  color: var(--graphite);
  line-height: 1.6;
}

.page-news .cadence .mono {
  color: var(--ink);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-news .news-hero-aside {
  position: relative;
  background: var(--forest);
  color: var(--white);
  padding: 22px 22px 34px;
  border-radius: var(--radius);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 26px));
}

.page-news .news-hero-aside::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 3px;
  background: var(--orange);
}

.page-news .aside-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--silver);
}

.page-news .aside-mono {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-news .aside-text {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--silver);
}

.page-news .news-hero-aside .btn {
  display: inline-block;
}

/* ---------- 双栏 ---------- */
.page-news .news-layout {
  display: grid;
  gap: var(--news-gap);
  padding-top: 36px;
}

/* ---------- 左侧索引 ---------- */
.page-news .batch-rail {
  border-top: 2px solid var(--ink);
  padding-top: 16px;
}

.page-news .rail-kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--graphite);
}

.page-news .rail-nav {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-news .rail-nav a {
  display: block;
  padding: 8px 10px;
  border-left: 2px solid var(--silver);
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-news .rail-nav a:hover,
.page-news .rail-nav a:focus-visible {
  border-left-color: var(--grass);
  color: var(--grass);
  background: var(--mist);
}

.page-news .rail-nav a[aria-current="true"] {
  border-left-color: var(--orange);
  background: var(--mist);
  font-weight: 600;
}

.page-news .batch-track {
  list-style: none;
  margin: 0;
  padding: 0 0 0 20px;
  position: relative;
  display: grid;
  gap: 16px;
}

.page-news .batch-track::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--silver);
}

.page-news .batch-node {
  position: relative;
}

.page-news .batch-mark {
  position: absolute;
  left: -16px;
  top: 5px;
  width: 9px;
  height: 9px;
  background: var(--silver);
  transition: background 0.18s var(--ease);
}

.page-news .batch-node.is-current .batch-mark {
  background: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-tint);
}

.page-news .batch-name {
  display: block;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}

.page-news .batch-time {
  display: block;
  font-size: 12px;
  line-height: 1.7;
  color: var(--graphite);
}

/* ---------- 章节通用 ---------- */
.page-news .news-section {
  padding: 36px 0 10px;
  border-top: var(--line);
}

.page-news .news-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-news .section-head {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.page-news .section-head h2 {
  margin: 0;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-news .section-head p {
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--graphite);
}

.page-news .section-note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-news .section-note a {
  color: var(--grass);
  text-decoration: none;
  border-bottom: 1px solid var(--silver);
}

.page-news .section-note a:hover {
  border-bottom-color: var(--grass);
}

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

.page-news .timeline-figure {
  margin: 0 0 6px;
}

.page-news .timeline-figure figcaption,
.page-news .archive-figure figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--graphite);
}

/* ---------- 更新条目 ---------- */
.page-news .update-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .update-item {
  padding: 20px 12px 20px 0;
  border-top: var(--line);
  transition: background 0.18s var(--ease), padding-left 0.18s var(--ease);
}

.page-news .update-item:hover,
.page-news .update-item:focus-within {
  background: var(--mist);
  padding-left: 12px;
}

.page-news .update-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
}

.page-news .ver {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--grass);
  line-height: 1.1;
}

.page-news .update-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-news .tag {
  display: inline-block;
  padding: 2px 10px;
  border: 1px solid var(--silver);
  border-radius: 999px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--graphite);
  background: var(--white);
  white-space: nowrap;
}

.page-news .tag--entry {
  color: var(--grass);
  border-color: var(--grass);
}

.page-news .tag--android {
  color: var(--forest);
  border-color: var(--forest);
}

.page-news .tag--guide {
  color: var(--path);
  border-color: var(--path);
}

.page-news .tag--archive {
  color: var(--graphite);
  border-color: var(--silver);
}

.page-news .tag--notice {
  color: var(--orange-deep);
  border-color: var(--orange);
  background: var(--orange-tint);
}

.page-news .when {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--graphite);
}

.page-news .update-title {
  margin: 10px 0 6px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
}

.page-news .update-summary {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-news .update-more {
  margin-top: 10px;
}

.page-news .update-more summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--grass);
  cursor: pointer;
  list-style: none;
}

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

.page-news .update-more summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 14px;
}

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

.page-news .update-more summary:hover {
  color: var(--path);
}

.page-news .update-more p {
  margin: 8px 0 0;
  max-width: 44em;
  font-size: 14px;
  line-height: 1.9;
  color: var(--graphite);
}

/* ---------- 档案区 ---------- */
.page-news .news-section--dense .section-head {
  margin-bottom: 18px;
}

.page-news .archive-grid {
  display: grid;
  gap: 20px;
  margin-bottom: 22px;
}

.page-news .archive-figure {
  margin: 0;
}

.page-news .archive-tools {
  display: grid;
  align-content: start;
  gap: 4px;
}

.page-news .chip-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--graphite);
}

.page-news .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 14px;
}

.page-news .chip {
  display: inline-block;
  padding: 5px 15px;
  border: 1px solid var(--silver);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  text-decoration: none;
  background: var(--white);
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-news .chip:hover,
.page-news .chip:focus-visible {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}

.page-news .chip--current {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}

.page-news .archive-hint {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-news .table-wrap {
  border: var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-news .arc-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.5;
}

.page-news .arc-table caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--graphite);
  background: var(--mist);
  border-bottom: var(--line);
}

.page-news .arc-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 10px 14px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--white);
  background: var(--ink);
  white-space: nowrap;
}

.page-news .arc-table tbody td {
  padding: 8px 14px;
  vertical-align: top;
  border-bottom: var(--line);
  color: var(--ink);
}

.page-news .arc-table tbody tr:nth-child(even):not(.arc-band) td {
  background: var(--mist);
}

.page-news .arc-table tbody tr:not(.arc-band):hover td {
  background: var(--orange-tint);
}

.page-news .arc-band th {
  padding: 7px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--forest);
  background: var(--white);
  border-top: 1px solid var(--grass);
  border-bottom: var(--line);
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-news .arc-table .ver-cell {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--grass);
  white-space: nowrap;
}

/* ---------- 专题系列 ---------- */
.page-news .series-figure {
  margin: 0 0 18px;
}

.page-news .series-grid {
  display: grid;
  gap: 16px;
}

.page-news .series-card {
  display: flex;
  flex-direction: column;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-news .series-card:hover {
  border-color: var(--grass);
  transform: translateY(-2px);
}

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

.page-news .series-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  flex: 1;
}

.page-news .series-index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange-deep);
}

.page-news .series-body h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 900;
  line-height: 1.3;
}

.page-news .series-focus {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink);
}

.page-news .series-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-news .link-arrow {
  margin-top: auto;
  padding-top: 10px;
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--grass);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

.page-news .link-arrow::after {
  content: "→";
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-news .link-arrow:hover {
  color: var(--orange-deep);
}

/* ---------- 流程 ---------- */
.page-news .process-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--line);
}

.page-news .process-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 0;
  border-bottom: var(--line);
}

.page-news .step-num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--orange-deep);
  line-height: 1.2;
}

.page-news .process-step h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.page-news .process-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
}

/* ---------- 反馈区 ---------- */
.page-news .feedback-block {
  display: grid;
  gap: 22px;
  margin: 40px 0 0;
  padding: 28px 20px 32px;
  background: var(--mist);
  border: var(--line);
  border-top: 3px solid var(--grass);
  border-radius: var(--radius);
}

.page-news .feedback-main h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3.4vw, 28px);
  font-weight: 900;
  line-height: 1.25;
}

.page-news .feedback-main p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--graphite);
}

.page-news .feedback-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 6px;
}

.page-news .feedback-actions .link-arrow {
  padding-top: 0;
  margin-top: 0;
}

.page-news .feedback-aside {
  border-left: 3px solid var(--orange);
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-news .feedback-aside .mono {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.page-news .feedback-aside p:last-child {
  margin: 0;
}

/* ---------- 返回顶部 ---------- */
.page-news .totop {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 30px;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--graphite);
  text-decoration: none;
  border-bottom: 1px solid var(--silver);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-news .totop::before {
  content: "↑";
}

.page-news .totop:hover {
  color: var(--grass);
  border-bottom-color: var(--grass);
}

/* ---------- 断点 ---------- */
@media (min-width: 768px) {
  .page-news .cadence {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-news .cadence li {
    flex-direction: column;
    gap: 4px;
    border-left: 1px solid var(--silver);
    padding-left: 14px;
  }

  .page-news .news-hero {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
    gap: 36px;
    align-items: start;
  }

  .page-news .archive-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .page-news .feedback-block {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
    padding: 32px 28px 36px;
  }

  .page-news .series-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .update-item {
    padding-right: 24px;
  }
}

@media (min-width: 1024px) {
  .page-news .news-hero {
    padding: 40px 0 56px;
    gap: 56px;
  }

  .page-news .news-layout {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 48px;
    padding-top: 48px;
  }

  .page-news .batch-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
    max-height: calc(100vh - var(--header-h) - 48px);
    overflow-y: auto;
  }

  .page-news .series-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr) minmax(0, 1fr);
  }

  .page-news .news-section {
    padding-top: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .update-item,
  .page-news .series-card,
  .page-news .rail-nav a,
  .page-news .chip,
  .page-news .link-arrow,
  .page-news .totop {
    transition: none;
  }

  .page-news .series-card:hover {
    transform: none;
  }
}
<<<END>>>