.page-news {
  --news-rail: 84px;
  background: var(--paper);
  color: var(--ink);
}

.page-news .news-lead {
  background: linear-gradient(180deg, var(--paper-2) 0%, var(--paper) 88%);
  border-bottom: 1px solid var(--line);
  padding-bottom: clamp(26px, 4vw, 52px);
}

.page-news .breadcrumb {
  padding-top: clamp(14px, 2vw, 22px);
  font-size: 13px;
  color: var(--ink-soft);
}

.page-news .breadcrumb a {
  color: var(--blue-mid);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-news .breadcrumb a:hover {
  border-bottom-color: var(--blue-mid);
}

.page-news .breadcrumb__sep {
  margin: 0 8px;
  color: var(--line-strong);
}

/* ===== 首屏 ===== */
.page-news .news-hero {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(26px, 4.5vw, 54px);
}

.page-news .news-hero__kicker {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--blue-mid);
}

.page-news h1 {
  margin: 0 0 18px;
  font-family: var(--font-sans);
  font-size: clamp(29px, 5.1vw, 45px);
  font-weight: 900;
  line-height: 1.13;
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 19ch;
}

.page-news .news-hero__intro {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-news .news-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(16px, 3.4vw, 40px);
  list-style: none;
  margin: clamp(24px, 3.5vw, 36px) 0 0;
  padding: 0;
}

.page-news .news-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-left: 14px;
  border-left: 1px solid var(--line-strong);
}

.page-news .news-hero__facts .mono {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--blue);
}

.page-news .news-hero__facts li span:last-child {
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

.page-news .news-hero__plate {
  background: var(--blue-deep);
  border: 1px solid var(--blue-line);
  padding: clamp(20px, 3vw, 28px);
  color: var(--paper);
}

.page-news .plate__head {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--blue-soft);
  opacity: 0.72;
}

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

.page-news .plate__row {
  display: grid;
  gap: 5px;
  padding: 12px 0;
  border-top: 1px solid var(--blue-line);
}

.page-news .plate__row dt {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--blue-soft);
  opacity: 0.72;
}

.page-news .plate__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
}

/* ===== 主体网格 ===== */
.page-news .news-shell {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  padding-top: clamp(30px, 4.6vw, 62px);
  padding-bottom: clamp(44px, 6vw, 88px);
}

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

.page-news .news-rail {
  order: -1;
  display: flex;
  align-items: center;
  gap: 2px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-strong);
}

.page-news .news-rail__label {
  margin-right: 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--line-strong);
}

.page-news .news-rail__item {
  display: block;
  padding: 6px 9px;
  font-size: 13px;
  line-height: 1;
  color: var(--ink-soft);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .news-rail__item:hover,
.page-news .news-rail__item[data-active] {
  color: var(--blue);
  border-left-color: var(--blue-mid);
}

/* ===== 区块 ===== */
.page-news .news-section {
  padding-top: clamp(28px, 4.4vw, 54px);
}

.page-news .news-section + .news-section {
  margin-top: clamp(34px, 5vw, 64px);
  border-top: 1px solid var(--line-strong);
}

.page-news .news-section__note {
  margin: 16px 0 clamp(20px, 3vw, 32px);
  max-width: 66ch;
  padding-left: 14px;
  border-left: 2px solid var(--blue-mid);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ===== 条目流 ===== */
.page-news .entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}

.page-news .entry {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 0 14px;
  padding: 22px 10px 22px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur) var(--ease);
}

.page-news .entry:hover {
  background-color: var(--paper-2);
}

.page-news .entry__no {
  padding-top: 4px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--line-strong);
  transition: color var(--dur) var(--ease);
}

.page-news .entry:hover .entry__no {
  color: var(--blue-mid);
}

.page-news .entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 9px;
}

.page-news .topic-tag {
  padding: 4px 8px;
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--blue);
  background: var(--blue-soft);
  border: 1px solid var(--blue-line);
}

.page-news .entry__when {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.page-news .entry__title {
  margin: 0 0 9px;
  font-size: clamp(18px, 2.1vw, 21px);
  font-weight: 800;
  line-height: 1.36;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-news .entry__title a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .entry__title a:hover {
  color: var(--blue-mid);
  border-bottom-color: var(--blue-mid);
}

.page-news .entry__summary {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-news .entry__version {
  margin: 11px 0 0;
  padding-left: 11px;
  border-left: 2px solid var(--line-strong);
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

.page-news .entry__media {
  grid-column: 2;
  margin: 16px 0 0;
}

.page-news .entry__media,
.page-news .topic__media {
  border: 1px solid var(--line);
}

.page-news .entry__media img,
.page-news .topic__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ===== 专题 ===== */
.page-news .topics {
  display: grid;
}

.page-news .topic {
  display: grid;
  gap: 18px;
  padding-top: 26px;
  border-top: 1px solid var(--line-strong);
}

.page-news .topic + .topic {
  margin-top: clamp(26px, 4vw, 52px);
}

.page-news .topic__code {
  margin: 0 0 8px;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--blue-mid);
}

.page-news .topic__name {
  margin: 0 0 8px;
  font-size: clamp(21px, 2.6vw, 27px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .topic__rate {
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
}

.page-news .topic__desc {
  margin: 0 0 14px;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--ink);
}

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

.page-news .topic__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-news .topic__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 1px;
  background: var(--line-strong);
}

/* ===== 修订日历 ===== */
.page-news .calendar {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line);
}

.page-news .calendar__tick {
  position: relative;
  padding: 18px 16px 20px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur) var(--ease);
}

.page-news .calendar__tick::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 16px;
  width: 1px;
  height: 14px;
  background: var(--line-strong);
  transition: background-color var(--dur) var(--ease);
}

.page-news .calendar__tick:hover {
  background-color: var(--paper-2);
}

.page-news .calendar__tick:hover::before {
  background: var(--blue-mid);
}

.page-news .calendar__q {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--blue);
}

.page-news .calendar__main {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-news .calendar__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.62;
  color: var(--ink-soft);
  opacity: 0.58;
  transition: opacity var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-news .calendar__tick:hover .calendar__hint {
  opacity: 1;
  color: var(--ink);
}

.page-news .rhythm {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
}

.page-news .rhythm li {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

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

.page-news .rhythm__val {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ===== 回看路径 ===== */
.page-news .lookback {
  display: grid;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-news .lookback__item {
  padding-top: 18px;
  border-top: 2px solid var(--blue);
}

.page-news .lookback__item + .lookback__item {
  margin-top: 28px;
}

.page-news .lookback__no {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--blue-mid);
}

.page-news .lookback__name {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--ink);
}

.page-news .lookback__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-news .news-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: 20px;
  border-top: 1px solid var(--line-strong);
}

.page-news .news-links a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  color: var(--blue);
  text-decoration: none;
  border: 1px solid var(--line-strong);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .news-links a:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--paper);
}

.page-news a:focus-visible,
.page-news .entry__title a:focus-visible {
  outline: 2px solid var(--blue-mid);
  outline-offset: 2px;
}

/* ===== 桌面端 ===== */
@media (min-width: 640px) {
  .page-news .rhythm li {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 720px) {
  .page-news .calendar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-news .lookback {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 3vw, 40px);
    align-items: start;
  }
  .page-news .lookback__item + .lookback__item {
    margin-top: 0;
  }
  .page-news .lookback__item:nth-child(2) {
    margin-top: 34px;
  }
  .page-news .lookback__item:nth-child(3) {
    margin-top: 68px;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-news .entry--featured {
    grid-template-columns: 40px minmax(0, 1fr) minmax(0, 300px);
    gap: 0 24px;
  }

  .page-news .entry--featured .entry__media {
    grid-column: 3;
    grid-row: 1;
    margin: 2px 0 0;
  }

  .page-news .topic {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-news .topic--solo {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-news .topic--flip .topic__text {
    order: 2;
  }

  .page-news .topic--flip .topic__media {
    order: 1;
  }

  .page-news .topic:nth-of-type(2) {
    margin-left: clamp(0px, 2.6vw, 44px);
  }

  .page-news .topic:nth-of-type(3) {
    margin-right: clamp(0px, 2.6vw, 44px);
  }

  .page-news .topic:nth-of-type(4) {
    margin-left: clamp(0px, 2.6vw, 44px);
  }
}

@media (min-width: 1080px) {
  .page-news .news-shell {
    grid-template-columns: minmax(0, 1fr) var(--news-rail);
    align-items: start;
  }

  .page-news .news-rail {
    order: 0;
    position: sticky;
    top: 108px;
    flex-direction: column;
    align-items: flex-end;
    gap: 0;
    padding: 0 0 0 14px;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-news .news-rail__label {
    margin: 0 0 10px;
    font-size: 11px;
    letter-spacing: 0.2em;
  }

  .page-news .news-rail__item {
    width: 100%;
    padding: 9px 0;
    text-align: right;
    border-left: 0;
    border-bottom: 1px solid transparent;
  }

  .page-news .news-rail__item:hover,
  .page-news .news-rail__item[data-active] {
    border-left-color: transparent;
    border-bottom-color: var(--blue-mid);
  }
}

@media (hover: hover) and (min-width: 900px) {
  .page-news .entry__version {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), margin-top var(--dur) var(--ease);
  }

  .page-news .entry:hover .entry__version,
  .page-news .entry:focus-within .entry__version {
    max-height: 8em;
    margin-top: 11px;
    opacity: 1;
  }
}