.page-news {
  --news-rail: 184px;
  --news-dot: 11px;
  background: var(--paper);
  overflow-x: clip;
}

.page-news img {
  max-width: 100%;
  height: auto;
}

.page-news .breadcrumbs {
  margin: 0 0 22px;
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-news .news-masthead {
  padding: 26px 0 46px;
  background:
    radial-gradient(140% 80% at 92% -20%, rgba(42, 140, 128, 0.20), transparent 62%),
    radial-gradient(90% 60% at -4% 4%, rgba(201, 82, 31, 0.12), transparent 58%),
    linear-gradient(180deg, var(--paper) 0%, var(--stone) 100%);
  border-bottom: 1px solid var(--line-strong);
}

.page-news .news-masthead__grid {
  display: grid;
  gap: 22px;
}

.page-news .news-masthead__rail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding-left: 12px;
  border-left: 3px solid var(--signal);
}

.page-news .news-masthead__ver {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
  background: var(--sand);
  border-radius: var(--radius);
  padding: 4px 9px;
}

.page-news .news-masthead__note {
  margin: 0;
  font-family: var(--font-note);
  font-size: 13px;
  color: var(--signal-deep);
}

.page-news .news-masthead__body h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(36px, 8vw, 72px);
  line-height: 1.06;
  letter-spacing: -0.04em;
  color: var(--ink);
  max-width: 15em;
}

.page-news .news-masthead__lead {
  margin: 18px 0 0;
  max-width: 42em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--slate);
}

.page-news .news-masthead__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-news .news-masthead__fig {
  margin: 30px 0 0;
}

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

/* ---------- 版本轴 ---------- */
.page-news .news-timeline {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--moss);
  color: var(--paper);
  border-top: 3px solid var(--signal);
  box-shadow: var(--shadow-lift);
}

.page-news .news-timeline__list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  list-style: none;
  margin: 0;
  padding: 15px 0 17px;
}

.page-news .news-timeline__item {
  position: relative;
  min-width: 0;
  padding: 0 6px 0 24px;
}

.page-news .news-timeline__item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 7px;
  width: var(--news-dot);
  height: var(--news-dot);
  border-radius: 50%;
  background: var(--teal-glow);
  box-shadow: 0 0 0 3px rgba(87, 180, 168, 0.22);
}

.page-news .news-timeline__item::after {
  content: "";
  position: absolute;
  left: 18px;
  right: -8px;
  top: 12px;
  border-top: 1px dashed var(--line-light);
}

.page-news .news-timeline__item:last-child::after {
  display: none;
}

.page-news .news-timeline__link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.page-news .news-timeline__no {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--teal-glow);
}

.page-news .news-timeline__name {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.45;
  transition: color var(--dur) var(--ease);
}

.page-news .news-timeline__link:hover .news-timeline__name,
.page-news .news-timeline__link:focus-visible .news-timeline__name {
  color: var(--peach);
  text-decoration: underline;
}

/* ---------- 双轴索引 ---------- */
.page-news .news-board__head {
  max-width: 46em;
}

.page-news .news-board__head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.8vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-news .news-board__sub {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate);
}

.page-news .news-board__grid {
  display: grid;
  gap: 26px;
  margin-top: 30px;
}

.page-news .news-board__versions {
  display: grid;
  gap: 14px;
}

.page-news .news-board__card {
  padding: 18px 20px 18px 22px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--slate);
  border-radius: var(--radius);
  box-shadow: var(--shadow-paper);
  scroll-margin-top: 96px;
}

.page-news .news-board__card--live {
  border-left-color: var(--signal);
  background: linear-gradient(180deg, var(--paper) 0%, rgba(246, 199, 174, 0.35) 100%);
}

.page-news .news-board__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-news .news-board__card h3 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-news .news-board__card p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-news .news-board__link {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--signal-deep);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-news .news-board__link:hover {
  color: var(--signal);
}

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

/* ---------- 第 3 版差异 ---------- */
.page-news .news-diff__head {
  max-width: 44em;
}

.page-news .news-diff__head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.8vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-news .news-diff__sub {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate);
}

.page-news .news-diff__grid {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.page-news .news-diff__card {
  padding: 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  border-radius: var(--radius);
  box-shadow: var(--shadow-paper);
}

.page-news .news-diff__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-news .news-diff__card h3 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .news-diff__figures {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 14px 0 4px;
  font-family: var(--font-mono);
}

.page-news .news-diff__was {
  font-size: 19px;
  color: var(--mist);
}

.page-news .news-diff__arrow {
  color: var(--mist);
}

.page-news .news-diff__now {
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--teal-deep);
}

.page-news .news-diff__text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-news .news-diff__more {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-news .news-diff__more summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--signal-deep);
}

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

.page-news .news-diff__more summary::before {
  content: "＋ ";
}

.page-news .news-diff__more[open] summary::before {
  content: "－ ";
}

.page-news .news-diff__more p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-news .news-diff__fig {
  margin: 28px 0 0;
}

/* ---------- 更新条目 ---------- */
.page-news .news-log__grid {
  display: grid;
  gap: 28px;
}

.page-news .news-log__heading {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-news .news-log__note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-news .news-log__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-news .news-log__chips .chip {
  display: inline-block;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .news-log__chips .chip:hover,
.page-news .news-log__chips .chip:focus-visible {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--paper);
}

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

.page-news .news-log__item {
  display: grid;
  gap: 6px;
  padding: 18px 0 18px 18px;
  border-left: 2px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: border-left-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-news .news-log__item:hover {
  border-left-color: var(--signal);
  background: rgba(247, 246, 241, 0.7);
}

.page-news .news-log__when {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-news .news-log__body h3 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink);
}

.page-news .news-log__body p {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-news .news-log__fig {
  margin: 26px 0 0;
}

/* ---------- 栏目说明 ---------- */
.page-news .news-cats__head {
  max-width: 44em;
}

.page-news .news-cats__head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.8vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-news .news-cats__sub {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate);
}

.page-news .news-cats__grid {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 258px), 1fr));
}

.page-news .news-cats__card {
  padding: 18px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-paper);
  scroll-margin-top: 96px;
  display: flex;
  flex-direction: column;
}

.page-news .news-cats__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--teal);
}

.page-news .news-cats__card h3 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .news-cats__card p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-news .news-cats__who {
  color: var(--mist);
  font-size: 13px;
  border-top: 1px dashed var(--line);
  padding-top: 10px;
}

.page-news .news-cats__link {
  margin-top: auto;
  padding-top: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--signal-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
}

.page-news .news-cats__link:hover {
  border-bottom-color: currentColor;
}

/* ---------- 订阅与回看 ---------- */
.page-news .news-recall__grid {
  display: grid;
  gap: 28px;
}

.page-news .news-recall__kicker {
  margin: 0;
  color: var(--teal-glow);
  font-size: 12px;
  letter-spacing: 0.16em;
}

.page-news .news-recall__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-news .news-recall__text {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--stone);
}

.page-news .news-recall__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 22px;
}

.page-news .news-recall__link {
  display: inline-block;
  padding: 10px 18px;
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-news .news-recall__side {
  padding: 20px;
  border: 1px dashed var(--line-light);
  border-radius: var(--radius);
  background: rgba(247, 246, 241, 0.06);
}

.page-news .news-recall__side-no {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--peach);
}

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

.page-news .news-recall__steps li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.page-news .news-recall__step-no {
  font-size: 12px;
  color: var(--teal-glow);
  padding-top: 2px;
}

.page-news .news-recall__steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
}

.page-news .news-recall__meta {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-light);
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-news .news-log__item {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
  }

  .page-news .news-log__when {
    padding-top: 3px;
  }

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

@media (min-width: 900px) {
  .page-news .news-masthead {
    padding: 34px 0 58px;
  }

  .page-news .news-masthead__grid {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-news .news-masthead__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .page-news .news-board__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .page-news .news-diff__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-news .news-log__grid {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-news .news-log__side {
    position: sticky;
    top: 84px;
  }

  .page-news .news-recall__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 44px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-timeline__name,
  .page-news .news-log__item,
  .page-news .news-log__chips .chip,
  .page-news .news-recall__link {
    transition: none;
  }
}