.page-news {
  --news-rail: 252px;
  display: block;
  padding-bottom: clamp(40px, 6vw, 88px);
}

/* 面包屑 */
.page-news .breadcrumbs {
  margin: clamp(16px, 2.6vw, 28px) 0 clamp(20px, 3vw, 36px);
}
.page-news .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--muted);
}
.page-news .breadcrumbs li {
  display: flex;
  align-items: center;
}
.page-news .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(143, 163, 191, 0.5);
}
.page-news .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--shift);
}
.page-news .breadcrumbs a:hover,
.page-news .breadcrumbs a:focus-visible {
  color: var(--cyan);
}
.page-news .breadcrumbs [aria-current="page"] {
  color: var(--white);
}

/* 栏目头部 */
.page-news .news-masthead {
  padding-top: clamp(4px, 1.4vw, 16px);
}
.page-news .masthead-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4.6vw, 52px);
  padding-bottom: clamp(28px, 4.4vw, 56px);
}
.page-news .masthead-lede h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(33px, 6.2vw, 66px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--white);
  max-width: 800px;
}
.page-news .masthead-lead {
  margin: 22px 0 0;
  max-width: 68ch;
  font-size: clamp(15.5px, 1.5vw, 18px);
  line-height: 1.8;
  color: var(--body-text);
}
.page-news .masthead-meta {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-news .masthead-meta li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}
.page-news .masthead-meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}
.page-news .masthead-stat {
  position: relative;
  display: grid;
  gap: 8px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line-mid);
  background: linear-gradient(160deg, rgba(23, 38, 60, 0.9), var(--teal-veil));
}
.page-news .masthead-stat .vertical-tag {
  position: absolute;
  top: clamp(14px, 2.6vw, 22px);
  right: 14px;
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--muted);
}
.page-news .masthead-stat .anchor-number {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(60px, 11vw, 108px);
  line-height: 0.88;
  letter-spacing: -0.04em;
  color: var(--cyan);
}
.page-news .masthead-stat .annotation {
  max-width: 24ch;
}
.page-news .news-hero {
  margin: 0;
  border: 1px solid var(--line-soft);
}
.page-news .news-hero img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1600 / 600;
  object-fit: cover;
}
.page-news .news-hero .media-frame__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-news .masthead-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(240px, 0.5fr);
    align-items: end;
  }
}

/* 画板节奏 */
.page-news .news-block {
  padding-block: clamp(42px, 6.4vw, 92px);
  border-top: 1px solid var(--line-soft);
}
.page-news .news-index {
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.page-news .block-head {
  max-width: 780px;
  margin-bottom: clamp(26px, 3.6vw, 46px);
}
.page-news .block-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(25px, 3.4vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--white);
}
.page-news .block-lede {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--body-text);
}
.page-news .block-lede a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 更新节奏 */
.page-news .cadence-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-news .cadence-item {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line-soft);
  background: var(--panel);
  transition: transform var(--shift), border-color var(--shift), background var(--shift);
}
.page-news .cadence-item:hover,
.page-news .cadence-item:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan);
  background: linear-gradient(180deg, var(--teal-veil), rgba(14, 26, 43, 0.92));
}
.page-news .cadence-item__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}
.page-news .cadence-item h3 {
  margin: 14px 0 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}
.page-news .cadence-item p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
}
.page-news .cadence-item .annotation {
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
}

@media (min-width: 800px) {
  .page-news .cadence-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 当季主线 */
.page-news .feature-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
.page-news .feature-item {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--line-mid);
  background: var(--panel);
  transition: transform var(--shift), border-color var(--shift);
}
.page-news .feature-item:first-child {
  border-color: var(--cyan-soft);
  background: linear-gradient(150deg, rgba(11, 43, 42, 0.78), rgba(14, 26, 43, 0.96) 64%);
}
.page-news .feature-item:hover,
.page-news .feature-item:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan);
}
.page-news .feature-item h3 {
  margin: 0;
  font-size: clamp(21px, 2.5vw, 29px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--white);
}
.page-news .feature-item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--body-text);
}
.page-news .feature-item .btn {
  align-self: flex-start;
  margin-top: auto;
}
.page-news .spark {
  display: block;
  width: 100%;
  height: 64px;
  margin: 4px 0 8px;
}
.page-news .spark__grid {
  stroke: rgba(201, 216, 230, 0.16);
  stroke-width: 1;
}
.page-news .spark__line {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.page-news .spark__dot {
  fill: var(--orange);
}

@media (min-width: 940px) {
  .page-news .feature-stack {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  }
}

/* 文章索引 */
.page-news .index-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 38px);
}
.page-news .index-card {
  padding: 22px;
  border: 1px solid var(--line-soft);
  background: var(--glass);
}
.page-news .index-card__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  font-weight: 600;
  color: var(--muted);
}
.page-news .index-card__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-news .index-card__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  font-size: 15px;
  color: var(--body-text);
  text-decoration: none;
  transition: background var(--shift), border-color var(--shift), color var(--shift);
}
.page-news .index-card__list a:hover,
.page-news .index-card__list a:focus-visible {
  background: var(--teal-veil);
  border-left-color: var(--cyan);
  color: var(--white);
}
.page-news .index-card__list .numeric {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--cyan);
}
.page-news .tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
}
.page-news .tag {
  padding: 4px 9px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--muted);
}

.page-news .post-group + .post-group {
  margin-top: clamp(26px, 3.6vw, 44px);
}
.page-news .post-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-mid);
}
.page-news .post-group__head h3 {
  margin: 0;
  font-size: 17px;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--white);
}

.page-news .post-item {
  border-bottom: 1px solid var(--line-soft);
  transition: background var(--shift), transform var(--shift);
}
.page-news .post-item:hover,
.page-news .post-item[open] {
  background: linear-gradient(90deg, rgba(11, 43, 42, 0.42), rgba(11, 43, 42, 0) 82%);
}
.page-news .post-item:hover {
  transform: translateY(-2px);
}
.page-news .post-item__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  padding: 18px 6px 16px;
  cursor: pointer;
  list-style: none;
}
.page-news .post-item__head::-webkit-details-marker {
  display: none;
}
.page-news .post-item__head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}
.page-news .post-item__rail {
  display: none;
  justify-content: center;
  padding-top: 2px;
}
.page-news .post-item__rail .vertical-tag {
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--muted);
  transition: color var(--shift);
}
.page-news .post-item:hover .post-item__rail .vertical-tag,
.page-news .post-item[open] .post-item__rail .vertical-tag {
  color: var(--cyan);
}
.page-news .post-item__headmain {
  display: flex;
  gap: 14px;
  align-items: baseline;
  min-width: 0;
}
.page-news .post-item__no {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
}
.page-news .post-item__title {
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.55;
  font-weight: 600;
  color: var(--white);
  transition: color var(--shift);
}
.page-news .post-item:hover .post-item__title {
  color: var(--cyan);
}
.page-news .post-item__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 5px;
}
.page-news .post-item__phase {
  white-space: nowrap;
  opacity: 0.6;
  transition: opacity var(--shift), color var(--shift);
}
.page-news .post-item:hover .post-item__phase,
.page-news .post-item[open] .post-item__phase {
  opacity: 1;
  color: var(--cyan);
}
.page-news .post-item__cue {
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  transition: transform var(--shift), border-color var(--shift);
}
.page-news .post-item[open] .post-item__cue {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}
.page-news .post-item__body {
  padding: 0 6px 22px;
  max-width: 76ch;
}
.page-news .post-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--body-text);
}
.page-news .post-item__figure {
  margin: 16px 0 0;
  max-width: 520px;
  border: 1px solid var(--line-soft);
}
.page-news .post-item__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-news .post-item__links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 14px 0 0;
  padding: 0;
}
.page-news .post-item__links a {
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-soft);
  padding-bottom: 2px;
  transition: border-color var(--shift);
}
.page-news .post-item__links a:hover,
.page-news .post-item__links a:focus-visible {
  border-bottom-color: var(--cyan);
}

@media (min-width: 640px) {
  .page-news .post-item__head {
    grid-template-columns: 22px minmax(0, 1fr) auto;
  }
  .page-news .post-item__rail {
    display: flex;
  }
  .page-news .post-item__body {
    padding-left: 42px;
  }
}

@media (min-width: 1000px) {
  .page-news .index-layout {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    align-items: start;
  }
  .page-news .index-rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}

/* 阶段归档 */
.page-news .table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-soft);
}
.page-news .archive-table caption {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
}
.page-news .archive-table th,
.page-news .archive-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  font-size: 14.5px;
}
.page-news .archive-table tbody th {
  color: var(--white);
  font-weight: 600;
  white-space: nowrap;
}
.page-news .archive-table .num {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
}
.page-news .archive-table tbody tr {
  border-top: 1px solid var(--line-soft);
  transition: background var(--shift);
}
.page-news .archive-table tbody tr:hover {
  background: var(--teal-veil);
}
.page-news .archive-note {
  margin-top: 16px;
}
.page-news .archive-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 订阅与纠错 */
.page-news .subscribe-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
.page-news .subscribe-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 3.4vw, 36px);
  border: 1px solid var(--line-soft);
  background: var(--panel);
  transition: transform var(--shift), border-color var(--shift);
}
.page-news .subscribe-card--mail {
  border-color: var(--cyan-soft);
  background: linear-gradient(150deg, rgba(11, 43, 42, 0.72), rgba(14, 26, 43, 0.96));
}
.page-news .subscribe-card:hover,
.page-news .subscribe-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan);
}
.page-news .subscribe-card h3 {
  margin: 0;
  font-size: clamp(19px, 2.3vw, 25px);
  line-height: 1.32;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}
.page-news .subscribe-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--body-text);
}
.page-news .subscribe-mail {
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--cyan);
  word-break: break-all;
}
.page-news .subscribe-card .btn {
  align-self: flex-start;
  margin-top: auto;
}
.page-news .news-footnotes {
  display: grid;
  gap: 8px;
  margin-top: clamp(28px, 4vw, 52px);
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

@media (min-width: 860px) {
  .page-news .subscribe-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .cadence-item,
  .page-news .feature-item,
  .page-news .post-item,
  .page-news .post-item__cue,
  .page-news .subscribe-card {
    transition: none;
  }
  .page-news .cadence-item:hover,
  .page-news .feature-item:hover,
  .page-news .post-item:hover,
  .page-news .subscribe-card:hover {
    transform: none;
  }
}