.page-news {
  --news-index-w: 196px;
  --news-axis-x: 5px;
  background: var(--paper-bg);
  color: var(--ink);
}

.page-news .page-news__topbar {
  padding-top: calc(var(--header-h) + 20px);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding: 18px 0 48px;
}

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

.page-news .news-hero__lead {
  position: relative;
}

.page-news .news-hero__axis {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--vermilion);
}

.page-news .news-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 7vw, 72px);
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-news .news-hero__intro {
  max-width: 44em;
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-2);
}

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

.page-news .news-hero__spin {
  display: none;
}

.page-news .news-hero__stack {
  display: grid;
  gap: 10px;
  margin-top: 34px;
  max-width: 100%;
}

.page-news .news-hero__chip {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: var(--sheet);
  border: 1px solid var(--rule);
  box-shadow: var(--shadow-paper);
  font-size: 14px;
}

.page-news .news-hero__chip--offset {
  border-left: 3px solid var(--vermilion);
}

.page-news .news-hero__chip-key {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-2);
}

.page-news .news-hero__chip-val {
  font-weight: 600;
  text-align: right;
}

@media (min-width: 900px) {
  .page-news .news-hero {
    padding: 22px 0 64px;
  }
  .page-news .news-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 312px;
    gap: 56px;
    align-items: end;
  }
  .page-news .news-hero__stack {
    margin-top: 0;
  }
}

@media (min-width: 1100px) {
  .page-news .news-hero__lead {
    padding-left: 34px;
  }
  .page-news .news-hero__spin {
    display: block;
    position: absolute;
    left: 0;
    top: 6px;
    writing-mode: vertical-rl;
    font-size: 11px;
    letter-spacing: 0.3em;
    color: var(--ink-2);
    border-left: 2px solid var(--vermilion);
    padding-left: 8px;
  }
  .page-news .news-hero__chip--offset {
    transform: translateX(22px);
  }
}

/* ---------- 章节 ---------- */
.page-news .news-section {
  padding: 52px 0;
}

.page-news .news-hero + .news-section,
.page-news .news-section + .news-section {
  border-top: 1px solid var(--rule);
}

.page-news .news-section .section-head {
  margin-bottom: 26px;
}

@media (min-width: 900px) {
  .page-news .news-section {
    padding: 72px 0;
  }
  .page-news .news-section .section-head {
    margin-bottom: 34px;
  }
}

/* ---------- 时间轴 ---------- */
.page-news .news-archive__anchor {
  margin: 0 0 30px;
}

.page-news .news-timeline {
  display: grid;
  gap: 28px;
}

.page-news .news-index {
  background: var(--sheet);
  border: 1px solid var(--rule);
  padding: 14px 12px;
}

.page-news .news-index__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-2);
}

.page-news .news-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 4px;
  overflow-x: auto;
}

.page-news .news-index__item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  white-space: nowrap;
  text-decoration: none;
  color: var(--ink-2);
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}

.page-news .news-index__no {
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-news .news-index__label {
  font-size: 13px;
}

.page-news .news-index__item[data-active] {
  color: var(--vermilion);
  border-left-color: var(--vermilion);
  background: rgba(180, 55, 42, 0.06);
}

.page-news .news-index__foot {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--rule);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-2);
}

@media (min-width: 940px) {
  .page-news .news-timeline {
    grid-template-columns: var(--news-index-w) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
  .page-news .news-index {
    position: sticky;
    top: calc(var(--header-h) + 16px);
    padding: 16px 14px;
  }
  .page-news .news-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }
  .page-news .news-index__item {
    justify-content: space-between;
    padding: 9px 10px;
  }
}

.page-news .news-stream {
  position: relative;
  padding-left: 26px;
}

.page-news .news-stream::before {
  content: "";
  position: absolute;
  left: var(--news-axis-x);
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--amber);
  opacity: 0.5;
}

.page-news .news-month {
  position: relative;
  background: var(--sheet);
  border: 1px solid var(--rule);
  padding: 20px 18px;
  box-shadow: var(--shadow-paper);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .news-month + .news-month {
  margin-top: 22px;
}

.page-news .news-month::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--amber);
  transition: transform var(--dur) var(--ease);
}

.page-news .news-month:hover {
  transform: translateY(-2px);
  border-color: var(--ink-2);
}

.page-news .news-month:hover::before {
  transform: scale(1.15);
}

.page-news .news-month__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}

.page-news .news-month__name {
  margin: 0;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-news .news-month__no {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--vermilion);
}

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

.page-news .news-entry {
  padding: 14px 14px 12px;
  background: var(--paper-bg);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--cyan-pale);
}

.page-news .news-entry__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.page-news .news-entry__id {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-2);
}

.page-news .news-entry__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.page-news .news-entry__summary {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.page-news .news-entry__more > summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan-deep);
}

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

.page-news .news-entry__more > summary::before {
  content: "+";
  display: inline-block;
  width: 14px;
  height: 14px;
  line-height: 12px;
  text-align: center;
  border: 1px solid currentColor;
  font-size: 11px;
}

.page-news .news-entry__more[open] > summary::before {
  content: "-";
  line-height: 11px;
}

.page-news .news-entry__body {
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px dashed var(--rule);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-news .news-entry__body p {
  margin: 0 0 8px;
}

.page-news .news-entry__body p:last-child {
  margin-bottom: 0;
}

.page-news .news-entry__body a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 二级栏目 ---------- */
.page-news .news-subs {
  display: grid;
  gap: 18px;
}

.page-news .news-sub {
  background: var(--sheet);
  border: 1px solid var(--rule);
  padding: 22px 20px;
}

.page-news .news-sub__idx {
  display: block;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ink-2);
}

.page-news .news-sub__name {
  margin: 8px 0 10px;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
}

.page-news .news-sub p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-news .news-sub__path {
  margin-bottom: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-deep);
}

.page-news .news-sub--case {
  padding: 18px;
  background:
    linear-gradient(180deg, rgba(47, 79, 82, 0.05), rgba(47, 79, 82, 0) 55%),
    var(--sheet);
}

.page-news .news-sub__figure {
  margin: 0 0 16px;
}

@media (min-width: 860px) {
  .page-news .news-subs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
  .page-news .news-sub--case {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 26px;
    align-items: center;
  }
  .page-news .news-sub__figure {
    margin: 0;
  }
}

/* ---------- 按标签翻条目 ---------- */
.page-news .news-browse {
  display: grid;
  gap: 24px;
}

.page-news .news-cat + .news-cat {
  margin-top: 22px;
}

.page-news .news-cat__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
}

.page-news .news-cat__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .news-cat__list li + li {
  border-top: 1px dashed var(--rule);
}

.page-news .news-cat__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 2px;
  font-size: 14px;
  line-height: 1.7;
  text-decoration: none;
  color: var(--ink);
  transition: color var(--dur-fast) var(--ease), padding-left var(--dur-fast) var(--ease);
}

.page-news .news-cat__link:hover {
  color: var(--cyan-deep);
  padding-left: 8px;
}

.page-news .news-cat__id {
  flex: none;
  font-size: 12px;
  color: var(--ink-2);
}

.page-news .news-browse__aside {
  background:
    linear-gradient(180deg, rgba(47, 79, 82, 0.06), rgba(47, 79, 82, 0) 60%),
    var(--sheet);
  border: 1px solid var(--rule);
  padding: 20px 18px;
}

.page-news .news-browse__aside .news-cat__head {
  margin-bottom: 12px;
}

.page-news .news-browse__lead {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-news .news-browse__figure {
  margin: 0 0 16px;
}

.page-news .news-browse__facts {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}

.page-news .news-browse__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  border-top: 1px dashed var(--rule);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-2);
}

.page-news .news-browse__facts .mono {
  flex: none;
  min-width: 62px;
  color: var(--cyan-deep);
  letter-spacing: 0.06em;
}

.page-news .news-browse__more {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-2);
}

@media (min-width: 940px) {
  .page-news .news-browse {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
}

/* ---------- 归档规则 ---------- */
.page-news .news-rules {
  display: grid;
  gap: 26px;
}

.page-news .news-rules__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: rule;
}

.page-news .news-rules__list li {
  counter-increment: rule;
  position: relative;
  padding: 16px 0 16px 52px;
  border-bottom: 1px solid var(--rule);
}

.page-news .news-rules__list li:first-child {
  padding-top: 0;
}

.page-news .news-rules__list li:first-child::before {
  top: 2px;
}

.page-news .news-rules__list li::before {
  content: counter(rule, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--vermilion);
}

.page-news .news-rules__name {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
}

.page-news .news-rules__list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-news .news-rules__figure {
  margin: 0;
}

@media (min-width: 900px) {
  .page-news .news-rules {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 44px;
    align-items: start;
  }
}

/* ---------- 回溯入口 ---------- */
.page-news .news-lookback {
  display: grid;
  gap: 14px;
}

.page-news .news-lookback__item {
  position: relative;
  display: block;
  padding: 20px 16px 18px;
  background: var(--sheet);
  border: 1px solid var(--rule);
  text-decoration: none;
  color: var(--ink);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-news .news-lookback__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 38px;
  height: 3px;
  background: var(--amber);
}

.page-news .news-lookback__item:hover,
.page-news .news-lookback__item:focus-visible {
  transform: translateY(-2px);
  border-color: var(--amber);
  box-shadow: var(--shadow-lift);
}

.page-news .news-lookback__range {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--amber-deep);
}

.page-news .news-lookback__desc {
  display: block;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-news .news-lookback__peek {
  display: block;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-deep);
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), margin-top var(--dur) var(--ease);
}

.page-news .news-lookback__item:hover .news-lookback__peek,
.page-news .news-lookback__item:focus-visible .news-lookback__peek {
  max-height: 44px;
  margin-top: 10px;
  opacity: 1;
}

.page-news .news-lookback__note {
  margin: 26px 0 0;
  font-size: 13px;
  line-height: 1.85;
}

@media (min-width: 760px) {
  .page-news .news-lookback {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-month,
  .page-news .news-month::before,
  .page-news .news-lookback__item,
  .page-news .news-lookback__peek,
  .page-news .news-hero__chip--offset,
  .page-news .news-cat__link {
    transition: opacity var(--dur) var(--ease);
    transform: none;
  }
  .page-news .news-month:hover,
  .page-news .news-lookback__item:hover,
  .page-news .news-lookback__item:focus-visible {
    transform: none;
  }
  .page-news .news-month:hover::before {
    transform: none;
  }
}