.page-news {
  --news-line: rgba(101, 120, 140, 0.28);
  --news-time-col: 108px;
  background: var(--mist);
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: 12px;
}

.page-news .news-intro {
  padding: 26px 0 22px;
  border-bottom: 1px solid var(--news-line);
}

.page-news .news-intro h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 7vw, 50px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 12px 0 16px;
}

.page-news .news-intro__lede {
  max-width: 64ch;
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
}

.page-news .news-intro__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.01em;
  color: var(--muted);
}

.page-news .news-intro__meta span {
  position: relative;
  padding-left: 14px;
}

.page-news .news-intro__meta span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

.page-news .shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-top: 8px;
}

@media (min-width: 980px) {
  .page-news .shell {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
}

.page-news .shell__main {
  min-width: 0;
}

/* 左侧目录轨道 */
.page-news .rail {
  border-top: 2px solid var(--ink);
  padding-top: 16px;
}

.page-news .rail::before {
  content: "";
  display: block;
  width: 44px;
  height: 3px;
  background: var(--orange);
  margin-bottom: 14px;
}

.page-news .rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

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

.page-news .rail__link {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--news-line);
  background: var(--paper);
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
  transition: background 220ms var(--ease), color 220ms var(--ease), border-color 220ms var(--ease);
}

.page-news .rail__link:hover,
.page-news .rail__link:focus-visible {
  border-color: var(--teal);
  color: var(--teal-deep);
}

.page-news .rail__link.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

@media (min-width: 980px) {
  .page-news .rail {
    position: sticky;
    top: calc(var(--header-offset) + 16px);
  }

  .page-news .rail__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .page-news .rail__link {
    display: block;
    border-radius: var(--radius-s);
    border-color: transparent;
    background: transparent;
    padding: 7px 12px;
    border-left: 2px solid transparent;
  }

  .page-news .rail__link.is-active {
    background: var(--paper);
    color: var(--ink);
    border-left-color: var(--orange);
    border-color: var(--news-line);
    border-left: 2px solid var(--orange);
  }
}

/* 分区骨架 */
.page-news .section {
  padding: 34px 0 14px;
  border-top: 1px solid var(--news-line);
  margin-top: 8px;
}

.page-news .section:first-of-type {
  border-top: 0;
  margin-top: 0;
  padding-top: 26px;
}

.page-news .news-h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 4.2vw, 32px);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 8px 0 12px;
  max-width: 24ch;
}

.page-news .section__lede {
  margin: 0 0 22px;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* 图形 */
.page-news .news-figure {
  margin: 0 0 20px;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--news-line);
  background: var(--ink-2);
}

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

.page-news .news-figure__cap {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--on-dark);
  background: var(--ink-2);
}

/* 周节奏 */
.page-news .week-track {
  list-style: none;
  margin: 0 0 18px;
  padding: 18px 2px 6px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  border-top: 2px solid var(--ink);
  -webkit-overflow-scrolling: touch;
}

.page-news .week-node {
  position: relative;
  flex: 1 0 72px;
  min-width: 72px;
  padding: 0 0 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-top: 1px solid var(--news-line);
  margin-top: -19px;
  padding-top: 12px;
}

.page-news .week-node__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--line);
  margin-bottom: 4px;
}

.page-news .week-node__day {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
}

.page-news .week-node__count {
  font-size: 10.5px;
  color: var(--teal-deep);
}

.page-news .week-node--on {
  border-top-color: var(--orange);
}

.page-news .week-node--on .week-node__dot {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(242, 106, 61, 0.16);
}

.page-news .week-node--on .week-node__day {
  color: var(--ink);
}

.page-news .week-node__pop {
  display: none;
}

@media (min-width: 760px) {
  .page-news .week-track {
    overflow: visible;
    gap: 10px;
  }

  .page-news .week-node {
    flex: 1 1 0;
    min-width: 0;
  }

  .page-news .week-node__pop {
    display: block;
    position: absolute;
    left: 0;
    top: calc(100% + 4px);
    width: max-content;
    max-width: 200px;
    padding: 7px 10px;
    border-radius: var(--radius-s);
    background: var(--ink);
    color: var(--paper);
    font-size: 11.5px;
    line-height: 1.5;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: opacity 200ms var(--ease), transform 200ms var(--ease), visibility 200ms;
    z-index: 3;
  }

  .page-news .week-node--on:hover .week-node__pop,
  .page-news .week-node--on:focus-within .week-node__pop {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

.page-news .band {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  margin: 22px 0 4px;
  padding: 14px 16px;
  border-radius: var(--radius-m);
  background: var(--ink);
  color: var(--on-dark);
  font-size: 14px;
  line-height: 1.6;
}

.page-news .band__num {
  font-size: 22px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.01em;
}

/* 日志流 */
.page-news .log-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .log-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--news-line);
}

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

@media (min-width: 720px) {
  .page-news .log-item {
    grid-template-columns: var(--news-time-col) minmax(0, 1fr);
    gap: 24px;
    padding: 20px 0;
  }
}

.page-news .log-item--lead {
  border-left: 3px solid var(--orange);
  padding-left: 14px;
}

@media (min-width: 720px) {
  .page-news .log-item--lead {
    padding-left: 18px;
  }
}

.page-news .log-item__time {
  display: flex;
  flex-direction: row;
  gap: 8px;
  align-items: baseline;
  font-family: var(--font-mono);
}

@media (min-width: 720px) {
  .page-news .log-item__time {
    flex-direction: column;
    gap: 2px;
    align-items: flex-start;
  }
}

.page-news .log-item__day {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.page-news .log-item__note {
  font-size: 11px;
  color: var(--muted-soft);
}

.page-news .log-item__body {
  min-width: 0;
}

.page-news .log-item__tag {
  display: inline-block;
  margin: 0 0 7px;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--teal-soft);
  color: var(--ink);
  font-size: 11.5px;
  letter-spacing: 0.02em;
}

.page-news .log-item__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.52;
  color: var(--ink);
}

.page-news .log-item--lead .log-item__title {
  font-size: 18.5px;
}

.page-news .log-item__desc {
  margin: 0 0 8px;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text);
}

.page-news .log-item__more > summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--teal-deep);
}

.page-news .log-item__more > summary::-webkit-details-marker {
  display: none;
}

.page-news .log-item__more > summary::before {
  content: "▸";
  font-size: 10px;
  transition: transform 200ms var(--ease);
}

.page-news .log-item__more[open] > summary::before {
  transform: rotate(90deg);
}

.page-news .log-item__more > summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 3px;
}

.page-news .log-item__more p {
  margin: 10px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--teal-soft);
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.76;
  color: var(--muted);
}

/* 系列 */
.page-news .series-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-news .series-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 16px 18px;
  border-radius: var(--radius-m);
  background: var(--paper);
  border: 1px solid var(--news-line);
  border-left-width: 4px;
}

.page-news .series-item--teal {
  border-left-color: var(--teal);
}

.page-news .series-item--orange {
  border-left-color: var(--orange);
}

.page-news .series-item--soft {
  border-left-color: var(--teal-soft);
}

.page-news .series-item--amber {
  border-left-color: var(--amber);
}

.page-news .series-item__idx {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--muted-soft);
}

.page-news .series-item__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink);
}

.page-news .series-item__text {
  margin: 0 0 8px;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--text);
}

.page-news .series-item__when {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--teal-deep);
}

/* 适配变更 */
.page-news .change-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-news .change-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 18px;
  border-radius: var(--radius-m);
  background: var(--ink);
  color: var(--paper);
}

@media (min-width: 720px) {
  .page-news .change-item {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
    padding: 20px 22px;
  }
}

.page-news .change-item__badge {
  justify-self: start;
  display: inline-block;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--amber);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-news .change-item__body {
  min-width: 0;
}

.page-news .change-item__range {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--amber);
}

.page-news .change-item__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .change-item__text {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.76;
  color: var(--on-dark);
}

/* 目录调整 */
.page-news .catalog-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .catalog-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--news-line);
}

.page-news .catalog-item:last-child {
  border-bottom: 0;
}

@media (min-width: 720px) {
  .page-news .catalog-item {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

.page-news .catalog-item__tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--teal-deep);
}

.page-news .catalog-item__text {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--text);
}

/* 回看方式 */
.page-news .archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

@media (min-width: 780px) {
  .page-news .archive-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-news .archive-item {
  padding: 18px 16px 20px;
  border-radius: var(--radius-m);
  background: var(--paper);
  border-top: 3px solid var(--ink);
}

.page-news .archive-item__idx {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-news .archive-item__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.45;
  color: var(--ink);
}

.page-news .archive-item__text {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.74;
  color: var(--muted);
}

.page-news .archive-item .link-arrow {
  font-size: 13.5px;
  color: var(--teal-deep);
}

/* 链接条 */
.page-news .news-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 6px;
}

.page-news .news-links .btn {
  text-decoration: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-news .rail__link,
  .page-news .week-node__pop,
  .page-news .log-item__more > summary::before {
    transition: none;
  }
}