.page-news {
  --news-gap: 20px;
  --news-radius: 10px;
  --news-line-soft: rgba(30, 42, 62, 0.7);
}

/* ---------- 上下文与首屏 ---------- */

.page-news .sb-breadcrumb {
  padding-top: 20px;
  padding-bottom: 4px;
}

.page-news .news-hero {
  padding-top: 20px;
  padding-bottom: 30px;
}

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

.page-news .news-hero__title {
  margin: 12px 0 0;
  font-size: clamp(29px, 7.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  overflow-wrap: break-word;
}

.page-news .news-hero__lede {
  margin-top: 16px;
  max-width: 64ch;
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-news .news-status {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  align-self: start;
}

.page-news .news-status__list {
  margin: 18px 0 0;
  padding: 0;
}

.page-news .news-status__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-top: 1px dashed var(--line);
}

.page-news .news-status__row:first-child {
  border-top: 1px solid var(--line);
}

.page-news .news-status__row dt {
  color: var(--muted);
  font-size: 14px;
}

.page-news .news-status__row dd {
  margin: 0;
  font-size: 15px;
  color: var(--text);
  white-space: nowrap;
}

/* ---------- 横幅视觉 ---------- */

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

.page-news .news-figure {
  margin: 22px 0 0;
}

.page-news .news-banner .sb-media,
.page-news .news-figure .sb-media {
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  overflow: hidden;
}

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

/* ---------- 主体两栏 ---------- */

.page-news .news-main {
  padding-top: 34px;
}

.page-news .news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-news .news-side__label {
  display: block;
  margin: 0 0 10px;
  color: var(--muted);
}

.page-news .news-side__label + .news-side__label {
  margin-top: 24px;
}

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

.page-news .news-tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-news .news-tag--all {
  color: var(--text);
  border-color: var(--cyan);
  background: var(--cyan-12);
}

.page-news .news-tag--rounds {
  color: var(--cyan);
  border-color: rgba(56, 225, 208, 0.45);
}

.page-news .news-tag--entry {
  color: var(--amber);
  border-color: rgba(255, 182, 72, 0.45);
}

.page-news .news-tag--exp {
  color: var(--violet);
  border-color: rgba(138, 107, 255, 0.45);
}

.page-news .news-tag--ver {
  color: var(--text);
  border-color: var(--line);
}

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

/* ---------- 公告流 ---------- */

.page-news .news-stream__head {
  margin-bottom: 16px;
}

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

.page-news .news-item {
  position: relative;
  display: block;
  margin-bottom: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-news .news-item:hover {
  border-color: rgba(56, 225, 208, 0.5);
  transform: translateY(-2px);
  background: var(--raised);
}

.page-news .news-item[open] {
  border-color: rgba(56, 225, 208, 0.7);
}

.page-news .news-item__summary {
  display: grid;
  grid-template-columns: 4px minmax(0, 1fr) 18px;
  gap: 14px;
  align-items: stretch;
  padding: 16px 16px 16px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-news .news-item__summary::marker {
  content: "";
}

.page-news .news-item__summary::after {
  content: "+";
  align-self: start;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--muted);
  text-align: center;
  transition: color var(--dur) var(--ease);
}

.page-news .news-item[open] .news-item__summary::after {
  content: "–";
  color: var(--cyan);
}

.page-news .news-item__bar {
  display: block;
  border-radius: 0 3px 3px 0;
  background: var(--faint);
}

.page-news .news-item[data-kind="rounds"] .news-item__bar {
  background: var(--cyan);
}

.page-news .news-item[data-kind="entry"] .news-item__bar {
  background: var(--amber);
}

.page-news .news-item[data-kind="exp"] .news-item__bar {
  background: var(--violet);
}

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

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.page-news .news-item__ver {
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-news .news-item__when {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faint);
}

.page-news .news-item__title {
  display: block;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  overflow-wrap: break-word;
}

.page-news .news-item__impact {
  display: block;
  margin-top: 7px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

.page-news .news-item__detail {
  margin: 0 18px;
  padding: 14px 0 18px;
  border-top: 1px dashed var(--line);
}

.page-news .news-item__detail p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

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

.page-news .news-item__detail a,
.page-news .round-summary a,
.page-news .exp-step a,
.page-news .news-feedback__main a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 225, 208, 0.35);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-news .news-item__detail a:hover,
.page-news .round-summary a:hover,
.page-news .exp-step a:hover,
.page-news .news-feedback__main a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 版本脉络 ---------- */

.page-news .version-groups {
  margin-top: 26px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-news .version-group {
  padding: 20px 20px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-news .version-group:hover {
  border-color: rgba(56, 225, 208, 0.42);
  background: var(--raised);
}

.page-news .version-group--current {
  border-color: rgba(56, 225, 208, 0.55);
  background: linear-gradient(180deg, var(--cyan-12) 0%, var(--panel) 62%);
}

.page-news .version-group__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-news .version-group__head::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1px;
  background: var(--line);
}

.page-news .version-group__head .sb-h3 {
  margin: 0;
}

.page-news .version-group__no {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-news .version-group__desc {
  margin: 16px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-news .version-group__list {
  margin-top: 12px;
}

.page-news .version-group__list li {
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 表格区 ---------- */

.page-news .news-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.page-news .news-split__main,
.page-news .news-split__side {
  min-width: 0;
}

.page-news .news-table__cap {
  caption-side: top;
  text-align: left;
  padding: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 轮次刻度 ---------- */

.page-news .round-ticks {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.page-news .round-tick {
  position: relative;
  padding: 14px 6px 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  text-align: center;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-news .round-tick:hover,
.page-news .round-tick:focus-visible {
  transform: scale(1.06);
  border-color: var(--cyan);
  background: var(--raised);
  outline: none;
}

.page-news .round-tick--current {
  border-color: var(--cyan);
  background: var(--cyan-12);
}

.page-news .round-tick__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-news .round-tick--current .round-tick__no {
  color: var(--cyan);
}

.page-news .round-tick__name {
  display: block;
  margin-top: 4px;
  font-size: 11.5px;
  line-height: 1.4;
  color: var(--faint);
}

.page-news .round-tick--current .round-tick__name {
  color: var(--cyan);
}

.page-news .round-tick__tip {
  display: none;
}

.page-news .round-summary {
  margin-top: 26px;
  padding-left: 16px;
  border-left: 2px solid var(--line);
}

.page-news .round-summary .sb-text {
  margin: 0 0 12px;
}

.page-news .round-summary .sb-text:last-child {
  margin-bottom: 0;
}

/* ---------- 体验优化 ---------- */

.page-news .exp-track {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-news .exp-step {
  padding: 18px 18px 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--violet);
  border-radius: 0 var(--news-radius) var(--news-radius) 0;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-news .exp-step:hover {
  border-color: rgba(138, 107, 255, 0.5);
  border-left-color: var(--violet);
  background: var(--raised);
}

.page-news .exp-step__no {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-news .exp-step .sb-h3 {
  margin: 0 0 8px;
}

.page-news .exp-step .sb-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
}

/* ---------- 季度回顾 ---------- */

.page-news .quarter-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-news .quarter-card {
  padding: 18px;
}

.page-news .quarter-card .sb-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.page-news .quarter-card__no {
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--faint);
}

.page-news .quarter-card .sb-card__title {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.5;
}

.page-news .quarter-card .sb-card__meta {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .quarter-note {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

/* ---------- 公告留言 ---------- */

.page-news .news-feedback {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  background: linear-gradient(140deg, rgba(255, 182, 72, 0.08) 0%, var(--panel) 46%, var(--panel) 100%);
}

.page-news .news-feedback__main .sb-h2 {
  margin: 8px 0 12px;
}

.page-news .news-feedback__main .sb-text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.8;
}

.page-news .news-feedback__main .sb-text:last-child {
  margin-bottom: 0;
}

.page-news .news-feedback__aside {
  display: grid;
  align-content: start;
  gap: 4px;
  padding: 16px 18px;
  border: 1px dashed var(--line);
  border-radius: 8px;
}

.page-news .news-feedback__aside .sb-label {
  display: block;
  margin-top: 10px;
  color: var(--muted);
}

.page-news .news-feedback__aside .sb-label:first-child {
  margin-top: 0;
}

.page-news .news-feedback__value {
  margin: 0;
  font-size: 14px;
  color: var(--text);
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-news .news-hero {
    padding-top: 28px;
    padding-bottom: 38px;
  }

  .page-news .round-ticks {
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 10px;
  }

  .page-news .round-tick__no {
    font-size: 20px;
  }

  .page-news .round-tick__name {
    font-size: 12px;
  }

  .page-news .round-tick__tip {
    display: block;
    position: absolute;
    left: 50%;
    bottom: calc(100% + 10px);
    width: 180px;
    padding: 9px 11px;
    transform: translateX(-50%) translateY(4px);
    background: var(--panel);
    border: 1px solid var(--cyan);
    border-radius: 8px;
    font-size: 12px;
    line-height: 1.55;
    color: var(--text);
    text-align: left;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    z-index: 6;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
      visibility var(--dur) var(--ease);
  }

  .page-news .round-tick:hover .round-tick__tip,
  .page-news .round-tick:focus-visible .round-tick__tip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }

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

  .page-news .news-feedback {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    padding: 28px;
  }
}

@media (min-width: 900px) {
  .page-news .news-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }

  .page-news .version-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-news .version-group--current {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1000px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 42px;
    align-items: end;
  }

  .page-news .news-layout {
    grid-template-columns: 212px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-news .news-side__inner {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-news .news-item__summary {
    padding: 18px 18px 18px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-tag,
  .page-news .round-tick,
  .page-news .version-group,
  .page-news .exp-step {
    transition: none;
  }

  .page-news .news-item:hover,
  .page-news .round-tick:hover,
  .page-news .round-tick:focus-visible {
    transform: none;
  }
}
<<<END>>>