.page-news {
  --news-pad: clamp(14px, 3vw, 24px);
  --news-radius: 2px;
  color: var(--ink-body);
}

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

/* 面包屑 */
.page-news .breadcrumb {
  padding-top: 18px;
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-news .breadcrumb a {
  color: var(--ink-2);
  text-decoration: none;
}

.page-news .breadcrumb a:hover {
  color: var(--cyan);
}

.page-news .crumb-sep {
  padding: 0 8px;
  color: var(--ink-2);
}

.page-news .breadcrumb [aria-current="page"] {
  color: var(--cyan);
}

/* 首屏 */
.page-news .topics-hero {
  display: grid;
  gap: var(--news-pad);
  padding-top: clamp(18px, 3vw, 34px);
}

.page-news .topics-hero .display {
  margin: 0.24em 0 0.42em;
  font-family: var(--font-head);
  font-size: clamp(2rem, 7.6vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-wrap: balance;
}

.page-news .topics-hero .lede {
  max-width: 54ch;
  margin: 0;
  font-size: clamp(15px, 2.1vw, 17.5px);
  line-height: 1.8;
  color: var(--ink-body);
}

.page-news .topics-hero-aside {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-news .topics-hero-aside .note {
  margin: 0;
  letter-spacing: 0.04em;
}

.page-news .hero-index {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .hero-index li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 13.5px;
  color: var(--ink-2);
}

.page-news .hero-index .num {
  min-width: 3.4ch;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  color: var(--cyan);
}

.page-news .topics-hero-media {
  margin: clamp(20px, 3vw, 38px) 0 0;
}

/* 章节头 */
.page-news .section-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-news .section-head .note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
}

/* 分类 + 面板骨架 */
.page-news .topics-layout {
  display: grid;
  gap: 22px;
}

.page-news .topics-rail .eyebrow {
  margin: 0 0 10px;
}

.page-news .topic-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 0 8px;
  scrollbar-width: thin;
}

.page-news .topic-tabs .tab {
  flex: 0 0 auto;
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  padding: 10px 16px;
  font-family: var(--font-head);
  font-size: 15px;
  letter-spacing: 0.05em;
  color: var(--ink-2);
  text-align: left;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-news .topic-tabs .tab:hover {
  color: var(--ink);
  border-color: rgba(38, 240, 200, 0.34);
}

.page-news .topic-tabs .tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .topic-tabs .tab[aria-selected="true"] {
  color: var(--cyan);
  background: rgba(38, 240, 200, 0.08);
  border-color: rgba(38, 240, 200, 0.42);
}

.page-news .tab-panel {
  display: block;
}

.page-news .tab-panel + .tab-panel {
  margin-top: 44px;
}

.page-news .tab-panel[hidden],
.page-news .tab-panel[aria-hidden="true"] {
  display: none;
}

.page-news .panel-title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  color: var(--ink);
}

.page-news .body-text {
  margin: 0 0 20px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-body);
}

/* 专题卡片 */
.page-news .topic-list {
  display: grid;
  gap: 14px;
}

.page-news .topic-card {
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  background: var(--glass);
  padding: 18px;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-news .topic-card:hover {
  border-color: rgba(38, 240, 200, 0.42);
  transform: translateY(-2px);
}

.page-news .topic-card--lead {
  padding: clamp(18px, 2.6vw, 28px);
  border-left: 3px solid var(--cyan);
  background: linear-gradient(135deg, rgba(38, 240, 200, 0.07), rgba(13, 33, 26, 0.72) 58%);
}

.page-news .topic-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--ink-2);
}

.page-news .topic-title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  line-height: 1.24;
  color: var(--ink);
}

.page-news .topic-card--lead .topic-title {
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  line-height: 1.14;
}

.page-news .topic-abstract {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-body);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 折叠清单 */
.page-news .disclosure {
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
}

.page-news .disclosure summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-news .disclosure summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .disclosure-body {
  padding-top: 10px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-2);
}

/* 版本时间线 */
.page-news .version-timeline {
  list-style: none;
  margin: 0 0 8px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-news .version-item {
  position: relative;
  padding: 4px 0 4px 20px;
  border-left: 2px solid var(--line);
}

.page-news .version-item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(38, 240, 200, 0.14);
}

.page-news .version-item--latest::before {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 61, 0.18);
}

.page-news .version-no {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-news .version-item--latest .version-no {
  color: var(--orange);
}

.page-news .version-desc {
  margin: 4px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-2);
}

/* 面板配图 */
.page-news .topics-panel-media {
  margin: 0 0 22px;
}

.page-news .topics-panel-media--square {
  max-width: 460px;
}

/* 赛前步骤 */
.page-news .prep-steps {
  list-style: none;
  counter-reset: prep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-news .prep-steps > li {
  position: relative;
  padding-left: 50px;
}

.page-news .prep-steps > li::before {
  counter-increment: prep;
  content: counter(prep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  color: var(--cyan);
}

.page-news .prep-step-title {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-news .prep-steps p {
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-2);
}

.page-news .panel-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
}

/* 继续了解 */
.page-news .entry-links {
  display: grid;
  gap: 12px;
}

.page-news .entry-links a {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  background: rgba(13, 33, 26, 0.55);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-news .entry-links a:hover {
  border-color: rgba(38, 240, 200, 0.42);
  background: rgba(13, 33, 26, 0.86);
  transform: translateY(-2px);
}

.page-news .entry-links a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .entry-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-head);
  font-size: 16px;
  letter-spacing: 0.03em;
  color: var(--ink);
}

.page-news .entry-desc {
  display: block;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--ink-2);
}

/* 平板与桌面 */
@media (min-width: 720px) {
  .page-news .entry-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-news .topic-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-news .topic-list .topic-card--lead {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-news .topics-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(24px, 4vw, 64px);
  }

  .page-news .topics-hero-aside {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: 22px;
  }

  .page-news .section-head {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: baseline;
    gap: 26px;
  }

  .page-news .section-head .note {
    margin: 0;
  }
}

@media (min-width: 960px) {
  .page-news .topics-layout {
    grid-template-columns: 218px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-news .topics-rail {
    position: sticky;
    top: calc(var(--topbar-h) + 18px);
  }

  .page-news .topic-tabs {
    flex-direction: column;
    overflow: visible;
    padding: 0;
  }

  .page-news .topic-tabs .tab {
    width: 100%;
  }

  .page-news .topic-tabs .tab[aria-selected="true"] {
    box-shadow: inset 3px 0 0 var(--cyan);
  }
}

@media (min-width: 1100px) {
  .page-news .entry-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (hover: hover) and (min-width: 820px) {
  .page-news .topic-card:hover .topic-abstract {
    -webkit-line-clamp: 8;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .topic-card,
  .page-news .entry-links a,
  .page-news .topic-tabs .tab {
    transition: none;
  }

  .page-news .topic-card:hover,
  .page-news .entry-links a:hover {
    transform: none;
  }
}