.page-news {
  --news-gap: clamp(20px, 3vw, 40px);
  --news-radius: 8px;
}

.page-news .news-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: end;
}

.page-news .news-hero__lead h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.1rem, 6.2vw, 4.2rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: var(--paper);
}

.page-news .news-hero__intro {
  margin: 20px 0 0;
  max-width: 40ch;
  color: var(--haze);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-news .news-hero__figure {
  margin: 0;
  position: relative;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

.page-news .news-hero__figure figcaption {
  display: block;
  padding: 10px 14px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
  background: rgba(10, 31, 26, 0.6);
}

/* 索引与左侧粘性轨道 */
.page-news .news-index__grid {
  display: grid;
  gap: var(--news-gap);
}

.page-news .news-rail {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-news .news-rail__label {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
  margin: 0;
}

.page-news .news-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .news-rail__list a {
  display: block;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  color: var(--haze);
  font-size: 14px;
  text-decoration: none;
  background: rgba(27, 70, 60, 0.28);
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-news .news-rail__list a:hover,
.page-news .news-rail__list a:focus-visible {
  color: var(--pulse);
  border-color: var(--line-pulse);
  background: rgba(63, 224, 204, 0.08);
  outline: none;
}

.page-news .news-rail__note {
  display: none;
  padding: 16px;
  border: 1px solid var(--line-gold);
  border-radius: var(--radius-m);
  background: linear-gradient(160deg, rgba(217, 168, 92, 0.1), rgba(16, 46, 38, 0.6));
}

.page-news .news-rail__note p {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--haze);
}

/* 列表主体 */
.page-news .news-feed h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  line-height: 1.2;
  margin: 0;
  color: var(--paper);
}

.page-news .news-feed__lead {
  margin: 14px 0 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
  max-width: 56ch;
}

.page-news .obs-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-news .obs-item {
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.page-news .obs-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-news .obs-item__idx {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-news .obs-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.45;
  font-weight: 600;
}

.page-news .obs-item__title a {
  color: var(--paper);
  text-decoration: none;
  transition: color 0.22s var(--ease);
}

.page-news .obs-item__title a:hover,
.page-news .obs-item__title a:focus-visible {
  color: var(--pulse);
  outline: none;
}

.page-news .obs-item__desc {
  margin: 10px 0 0;
  max-height: 3.7em;
  overflow: hidden;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.85;
  transition: max-height 0.34s var(--ease), color 0.24s var(--ease);
}

.page-news .obs-item:hover .obs-item__desc,
.page-news .obs-item:focus-within .obs-item__desc {
  max-height: 14em;
  color: var(--haze);
}

.page-news .obs-item__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
}

/* 更新日志 */
.page-news .news-log h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.6vw, 2.6rem);
  line-height: 1.2;
  margin: 10px 0 0;
  color: var(--ink-text);
}

.page-news .news-log__lead {
  margin: 14px 0 0;
  max-width: 60ch;
  color: #2c4a41;
  font-size: 15px;
  line-height: 1.85;
}

.page-news .log-list {
  list-style: none;
  margin: 34px 0 0;
  padding: 0 0 0 22px;
  position: relative;
}

.page-news .log-list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, rgba(217, 168, 92, 0.75), rgba(10, 31, 26, 0.18));
}

.page-news .log-item {
  position: relative;
  padding: 0 0 28px 6px;
}

.page-news .log-item:last-child {
  padding-bottom: 0;
}

.page-news .log-item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--gold);
}

.page-news .log-item__phase {
  display: block;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: #6b5a34;
  margin-bottom: 8px;
}

.page-news .log-item h3 {
  margin: 0;
  font-size: clamp(1rem, 1.9vw, 1.18rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink-text);
}

.page-news .log-item p {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: #2c4a41;
}

.page-news .log-item__meta {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #5c7a70;
}

/* 专题系列 */
.page-news .news-series__head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.6vw, 2.6rem);
  line-height: 1.2;
  margin: 10px 0 0;
  color: var(--paper);
}

.page-news .news-series__head > p:last-child {
  margin: 14px 0 0;
  max-width: 54ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}

.page-news .news-series__grid {
  display: grid;
  gap: var(--news-gap);
  margin-top: 32px;
}

.page-news .news-series__figure {
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

.page-news .series-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-news .series-item {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: linear-gradient(155deg, rgba(27, 70, 60, 0.5), rgba(10, 31, 26, 0.72));
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-news .series-item:hover,
.page-news .series-item:focus-within {
  border-color: var(--line-gold);
  transform: translateY(-2px);
}

.page-news .series-item__no {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-news .series-item h3 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 1.12rem;
  line-height: 1.45;
  font-weight: 600;
}

.page-news .series-item h3 a {
  color: var(--paper);
  text-decoration: none;
}

.page-news .series-item h3 a:hover,
.page-news .series-item h3 a:focus-visible {
  color: var(--pulse);
  outline: none;
}

.page-news .series-item p {
  margin: 9px 0 12px;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.8;
}

/* 编辑手记 */
.page-news .news-editor__grid {
  display: grid;
  gap: var(--news-gap);
  align-items: start;
}

.page-news .news-editor__text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.24;
  margin: 10px 0 0;
  color: var(--paper);
}

.page-news .news-editor__text > p {
  margin: 16px 0 0;
  max-width: 56ch;
  color: var(--haze);
  font-size: 15px;
  line-height: 1.9;
}

.page-news .editor-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
}

.page-news .editor-stats li {
  padding: 16px;
  border-radius: var(--radius-m);
  border: 1px solid var(--line-pulse);
  background: rgba(27, 70, 60, 0.35);
}

.page-news .editor-stats__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 1.9rem);
  color: var(--pulse);
  line-height: 1;
}

.page-news .editor-stats__label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--mist);
  line-height: 1.6;
}

.page-news .news-editor__foot {
  margin: 20px 0 0;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-news .news-editor__figure {
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

.page-news .news-editor__figure figcaption {
  display: block;
  padding: 10px 14px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

/* 回看与追问 */
.page-news .news-revisit__grid {
  display: grid;
  gap: var(--news-gap);
  align-items: center;
}

.page-news .news-revisit__text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.4vw, 2.4rem);
  line-height: 1.26;
  margin: 10px 0 0;
  color: var(--paper);
}

.page-news .news-revisit__text > p {
  margin: 14px 0 0;
  max-width: 48ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}

.page-news .revisit-qa {
  margin-top: 22px;
  border-top: 1px solid var(--line);
}

.page-news .revisit-qa details {
  border-bottom: 1px solid var(--line);
}

.page-news .revisit-qa summary {
  cursor: pointer;
  padding: 14px 26px 14px 0;
  position: relative;
  font-size: 15px;
  color: var(--paper);
  list-style: none;
}

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

.page-news .revisit-qa summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 15px;
}

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

.page-news .revisit-qa summary:focus-visible {
  outline: 2px solid var(--pulse);
  outline-offset: 3px;
}

.page-news .revisit-qa details p {
  margin: 0 0 16px;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--haze);
}

.page-news .news-revisit__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 24px;
}

.page-news .news-revisit__figure {
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line-pulse);
  background: var(--ink-2);
}

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

@media (min-width: 640px) {
  .page-news .obs-item {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: clamp(14px, 2vw, 26px);
    padding: 24px 0;
  }

  .page-news .editor-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news .news-index__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-news .news-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-news .news-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 6px;
    border-left: 1px solid var(--line);
    padding-left: 0;
  }

  .page-news .news-rail__list a {
    border: none;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    padding: 9px 12px;
    margin-left: -1px;
  }

  .page-news .news-rail__list a:hover,
  .page-news .news-rail__list a:focus-visible {
    border-left-color: var(--pulse);
    background: rgba(63, 224, 204, 0.07);
  }

  .page-news .news-rail__note {
    display: block;
  }

  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-news .news-series__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

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

  .page-news .news-editor__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(30px, 4vw, 60px);
  }

  .page-news .news-revisit__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(30px, 4vw, 60px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .obs-item__desc,
  .page-news .series-item,
  .page-news .news-rail__list a {
    transition: none;
  }

  .page-news .series-item:hover,
  .page-news .series-item:focus-within {
    transform: none;
  }
}