.page-news {
  --news-rail: 260px;
  display: block;
  padding-block: 8px 72px;
}

/* ===== 刊头 ===== */
.page-news .news-masthead {
  padding-block: 18px 28px;
  border-bottom: 1px solid var(--c-line);
}
.page-news .news-masthead__issue {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-std);
}
.page-news .news-masthead__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(44px, 13vw, 92px);
  line-height: 0.94;
  letter-spacing: -0.02em;
  color: var(--c-text);
}
.page-news .news-masthead__lead {
  max-width: 62ch;
  margin: 18px 0 0;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--c-sub);
}
.page-news .news-masthead__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--c-muted);
}
.page-news .news-masthead__meta li {
  position: relative;
  padding-left: 14px;
}
.page-news .news-masthead__meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-std);
}
.page-news .news-masthead__meta li:nth-child(2)::before { background: var(--c-beta); }
.page-news .news-masthead__meta li:nth-child(3)::before { background: var(--c-focus); }
.page-news .news-masthead__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ===== 左窄右宽骨架 ===== */
.page-news .news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "stream"
    "rail";
  gap: 36px;
  margin-top: 32px;
}
.page-news .news-rail {
  grid-area: rail;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}
.page-news .news-stream {
  grid-area: stream;
  display: flex;
  flex-direction: column;
  gap: 28px;
  min-width: 0;
}

/* ===== 左侧栏 ===== */
.page-news .rail-block {
  padding: 16px 16px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-card);
  background: var(--c-panel);
}
.page-news .rail-block__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.page-news .rail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-news .news-chip {
  display: inline-block;
  padding: 6px 13px;
  border: 1px solid rgba(37, 227, 212, 0.42);
  border-radius: 999px;
  color: var(--c-std);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: background var(--t-fast) ease, border-color var(--t-fast) ease, color var(--t-fast) ease;
}
.page-news .news-chip:hover,
.page-news .news-chip:focus-visible {
  background: rgba(37, 227, 212, 0.18);
  border-color: var(--c-std);
  color: var(--c-text);
}
.page-news .rail-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-news .rail-links a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--c-sub);
  font-size: 15px;
  text-decoration: none;
  transition: background var(--t-fast) ease, border-color var(--t-fast) ease, color var(--t-fast) ease;
}
.page-news .rail-links__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--c-muted);
}
.page-news .rail-links a:hover,
.page-news .rail-links a:focus-visible {
  background: var(--c-lift);
  border-left-color: var(--c-beta);
  color: var(--c-text);
}
.page-news .rail-links a:hover .rail-links__no,
.page-news .rail-links a:focus-visible .rail-links__no { color: var(--c-beta); }
.page-news .rail-block--cta {
  border-color: rgba(255, 122, 26, 0.38);
  background: linear-gradient(160deg, rgba(255, 122, 26, 0.14), var(--c-panel) 62%);
}
.page-news .rail-block__note {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-sub);
}

/* ===== 面板通用 ===== */
.page-news .news-panel {
  padding: 22px 18px 26px;
  scroll-margin-top: 96px;
}
.page-news .panel__no {
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--c-std);
}
.page-news .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.page-news .section-lede {
  max-width: 66ch;
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--c-sub);
}

/* ===== 图片 ===== */
.page-news .media-frame { margin: 0; }
.page-news .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-card);
  object-fit: cover;
}
.page-news .media-frame__cap {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-muted);
}
.page-news .lead-item__media,
.page-news .topics-media,
.page-news .watch-media,
.page-news .archive-media { margin: 0 0 18px; }

/* ===== 头条条目 ===== */
.page-news .lead-item {
  display: grid;
  gap: 8px;
}
.page-news .lead-item__body { min-width: 0; }
.page-news .lead-item__title {
  margin: 8px 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 6.4vw, 34px);
  line-height: 1.14;
  letter-spacing: -0.015em;
}
.page-news .lead-item__title a {
  color: var(--c-text);
  text-decoration: none;
}
.page-news .lead-item__title a:hover,
.page-news .lead-item__title a:focus-visible { color: var(--c-std); }
.page-news .lead-item__cols {
  display: grid;
  gap: 14px;
}
.page-news .lead-item__cols p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--c-sub);
}
.page-news .item-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

/* ===== 次级条目：橙色标尺 ===== */
.page-news .news-item {
  position: relative;
  margin-top: 24px;
  padding: 20px 0 4px;
  border-top: 1px solid var(--c-line);
}
.page-news .news-item::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 22px;
  bottom: 12px;
  width: 2px;
  background: var(--c-beta);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--t-fast) ease;
}
.page-news .news-item:hover::before,
.page-news .news-item:focus-within::before { transform: scaleY(1); }
.page-news .news-item__title {
  margin: 8px 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.28;
  letter-spacing: -0.01em;
}
.page-news .news-item--minor .news-item__title { font-size: 17px; }
.page-news .news-item__title a {
  color: var(--c-text);
  text-decoration: none;
}
.page-news .news-item__title a:hover,
.page-news .news-item__title a:focus-visible { color: var(--c-std); }
.page-news .news-item__desc {
  max-width: 68ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-sub);
}

/* ===== 版本迭代 ===== */
.page-news .version-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-news .version-item {
  border: 1px solid var(--c-line);
  border-radius: var(--r-card);
  background: rgba(20, 42, 74, 0.28);
}
.page-news .version-item--current {
  border-color: rgba(37, 227, 212, 0.4);
  background: rgba(37, 227, 212, 0.06);
}
.page-news .version-sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding: 14px 16px;
  cursor: pointer;
}
.page-news .version-item__no {
  padding: 2px 7px;
  border: 1px solid rgba(37, 227, 212, 0.45);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-std);
}
.page-news .version-item--current .version-item__no {
  border-color: rgba(255, 122, 26, 0.5);
  color: var(--c-beta);
}
.page-news .version-item__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text);
}
.page-news .version-item__time {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-muted);
}
.page-news .version-body { padding: 0 16px 16px; }
.page-news .bullet-list {
  display: grid;
  gap: 7px;
  margin: 0;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-sub);
}
.page-news .bullet-list li::marker { color: var(--c-std); }

/* ===== 专题网格 ===== */
.page-news .topic-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}
.page-news .topic-card {
  display: flex;
  flex-direction: column;
  padding: 16px 16px 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-card);
  background: rgba(20, 42, 74, 0.32);
  transition: background var(--t-fast) ease, border-color var(--t-fast) ease;
}
.page-news .topic-card:hover,
.page-news .topic-card:focus-within {
  background: var(--c-lift);
  border-color: rgba(77, 208, 255, 0.5);
}
.page-news .topic-card__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text);
}
.page-news .topic-card__desc {
  flex: 1 1 auto;
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--c-sub);
}
.page-news .topic-card__entry {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--c-line);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--c-muted);
}

/* ===== 数据观察列表 ===== */
.page-news .watch-list {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--c-line);
}
.page-news .watch-item {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 12px;
  margin-inline: -10px;
  padding: 14px 10px;
  border-bottom: 1px solid var(--c-line);
  transition: background var(--t-fast) ease;
}
.page-news .watch-item:hover,
.page-news .watch-item:focus-within { background: rgba(20, 42, 74, 0.5); }
.page-news .watch-item__no {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-std);
}
.page-news .watch-item__title {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-text);
}
.page-news .watch-item__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ===== 归档 ===== */
.page-news .season-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}
.page-news .season-card {
  padding: 16px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-std);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  background: rgba(20, 42, 74, 0.35);
  transition: background var(--t-fast) ease, border-color var(--t-fast) ease;
}
.page-news .season-card:hover,
.page-news .season-card:focus-visible {
  background: var(--c-lift);
  border-left-color: var(--c-beta);
}
.page-news .season-card__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-text);
}
.page-news .season-card__line {
  margin: 0;
  font-size: 14px;
  color: var(--c-std);
}
.page-news .season-card__meta {
  max-height: 200px;
  margin: 10px 0 0;
  overflow: hidden;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-muted);
  opacity: 1;
  transition: max-height var(--t-slide) ease, opacity var(--t-fast) ease;
}
.page-news .archive-tags { margin-bottom: 20px; }
.page-news .archive-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--c-line);
}
.page-news .archive-foot p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-muted);
}
.page-news .archive-foot a { color: var(--c-std); }

/* ===== 窄屏微调 ===== */
@media (max-width: 560px) {
  .page-news .version-item__time { margin-left: 0; }
  .page-news .watch-item { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .page-news .watch-item__no { padding-top: 0; }
}

/* ===== 平板 ===== */
@media (min-width: 620px) {
  .page-news .topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-news .lead-item__cols { grid-template-columns: 1fr 1fr; gap: 26px; }
}
@media (min-width: 700px) {
  .page-news .news-panel { padding: 28px 30px 32px; }
  .page-news .season-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (hover: hover) and (min-width: 700px) {
  .page-news .season-card__meta { max-height: 0; opacity: 0; }
  .page-news .season-card:hover .season-card__meta,
  .page-news .season-card:focus .season-card__meta,
  .page-news .season-card:focus-within .season-card__meta {
    max-height: 200px;
    opacity: 1;
  }
}

/* ===== 桌面：左窄右宽 ===== */
@media (min-width: 960px) {
  .page-news .news-layout {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    grid-template-areas: "rail stream";
    gap: 56px;
    margin-top: 48px;
  }
  .page-news .news-stream { gap: 40px; }
  .page-news .news-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }
}
@media (min-width: 1080px) {
  .page-news .topic-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
<<<END>>>