.page-news {
  --news-green: #00FF88;
  --news-gold: #F5B84B;
  --news-red: #FF4D4D;
  --news-panel: #101E40;
  --news-ink: #080C14;
  --news-paper: #F2EBDD;
  --news-text: #E7EDF5;
  --news-ice: #9FB4C7;
  --news-hairline: #233044;
  --news-side-width: 320px;
  background: var(--news-ink);
  color: var(--news-text);
  overflow-x: hidden;
}

/* ===== 封面区 ===== */
.page-news__cover {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  isolation: isolate;
}
.page-news__cover-figure {
  margin: 0;
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}
.page-news__cover-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-news__cover-overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(115deg, rgba(8, 12, 20, 0.92) 0%, rgba(8, 12, 20, 0.72) 38%, rgba(16, 30, 64, 0.45) 100%);
}
.page-news__cover-content {
  width: 100%;
  padding: clamp(2.5rem, 7vw, 5rem) clamp(1rem, 4vw, 2.5rem) clamp(2rem, 4vw, 3rem);
}
.page-news__kicker {
  font-family: var(--font-display);
  font-size: 0.875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--news-green);
  margin: 0 0 1rem;
}
.page-news__title {
  font-family: var(--font-cn);
  font-size: clamp(1.75rem, 4.2vw, 3.5rem);
  line-height: 1.15;
  font-weight: 800;
  color: var(--news-text);
  margin: 0 0 1rem;
  max-width: 15em;
}
.page-news__lead {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  color: var(--news-ice);
  margin: 0;
  max-width: 36em;
  line-height: 1.7;
}

/* ===== 主体布局 ===== */
.page-news__body {
  padding-top: 2rem;
  padding-bottom: 5rem;
}
.page-news__breadcrumbs {
  margin-bottom: 2rem;
}
.page-news__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--news-hairline);
}
.page-news__filter-label {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--news-ice);
  margin-right: 0.75rem;
}
.page-news__filter-btn {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--news-ice);
  background: transparent;
  border: 1px solid var(--news-hairline);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  cursor: pointer;
  transition: border-color 240ms ease-out, color 240ms ease-out, background 240ms ease-out;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}
.page-news__filter-btn:hover,
.page-news__filter-btn.is-active {
  border-color: var(--news-green);
  color: var(--news-green);
  background: rgba(0, 255, 136, 0.06);
}

.page-news__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.page-news__grid .col-span-8 {
  min-width: 0;
}
.page-news__side {
  margin-top: 3.5rem;
  border-top: 1px solid var(--news-hairline);
  padding-top: 2rem;
}
.page-news__side > * + * {
  margin-top: 2.5rem;
}

/* ===== 区块通用 ===== */
.page-news__section {
  padding-top: 2rem;
  border-top: 1px solid var(--news-hairline);
}
.page-news__section:first-of-type {
  border-top: none;
}
.page-news__section + .page-news__section {
  margin-top: 3.5rem;
}
.page-news__section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
}
.page-news__section-title {
  font-family: var(--font-cn);
  font-size: clamp(1.5rem, 2.6vw, 2.25rem);
  font-weight: 800;
  color: var(--news-text);
  margin: 0;
}
.page-news__section-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--news-ice);
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.page-news__section-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--news-ice);
  margin: 0 0 1.75rem;
  max-width: 60em;
}
.page-news__section-desc a,
.page-news__detail-text a {
  color: var(--news-green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== 时间线 ===== */
.page-news__timeline {
  position: relative;
  padding-left: 0;
}
.page-news__item {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 1.5rem;
}
.page-news__item::before {
  content: "";
  position: absolute;
  left: 0.3125rem;
  top: 1.5rem;
  bottom: -1.5rem;
  width: 1px;
  background: var(--news-hairline);
}
.page-news__item:last-child::before {
  display: none;
}
.page-news__item-mark {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 0.5rem;
}
.page-news__item-date {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--news-ice);
}
.page-news__item-mark .status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--news-green);
  box-shadow: 0 0 10px rgba(0, 255, 136, 0.6);
  animation: page-news-breathe 2s ease-in-out infinite;
  flex-shrink: 0;
}
.page-news__item-card {
  background: rgba(16, 30, 64, 0.72);
  border: 1px solid var(--news-hairline);
  border-left: 3px solid var(--news-green);
  padding: clamp(1.25rem, 2.4vw, 1.75rem);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: border-color 240ms ease-out, box-shadow 240ms ease-out;
}
.page-news__item-card:hover {
  border-left-color: var(--news-gold);
  box-shadow: 0 0 0 1px rgba(0, 255, 136, 0.15), 0 12px 32px -12px rgba(0, 0, 0, 0.6);
}
.page-news__item-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.page-news__item-title {
  font-family: var(--font-cn);
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  line-height: 1.35;
  margin: 0 0 0.75rem;
  color: var(--news-text);
  font-weight: 700;
}
.page-news__item-excerpt {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--news-ice);
  margin: 0 0 1rem;
}
.page-news__item-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--news-green);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  transition: color 240ms ease-out;
}
.page-news__item-toggle:hover {
  color: var(--news-gold);
}
.page-news__toggle-icon {
  font-family: var(--font-mono);
  font-size: 1rem;
  transition: transform 240ms ease-out;
}
.page-news__item-toggle[aria-expanded="true"] .page-news__toggle-icon {
  transform: rotate(45deg);
}
.page-news__item-detail {
  margin-top: 1rem;
}
.accordion-content[data-open],
.accordion .accordion-content[data-open] {
  display: block;
}
.page-news__item-detail .accordion-content {
  padding-top: 0.75rem;
  border-top: 1px dashed var(--news-hairline);
}
.page-news__detail-list {
  margin: 0;
  padding-left: 1rem;
}
.page-news__detail-list li {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--news-ice);
  margin-bottom: 0.375rem;
}
.page-news__detail-text {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--news-ice);
  margin: 0;
}

/* ===== 录像专题网格 ===== */
.page-news__league-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}
.page-news__league-card {
  background: var(--news-panel);
  border: 1px solid var(--news-hairline);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: transform 240ms ease-out, border-color 240ms ease-out;
}
.page-news__league-card:hover {
  transform: translateY(-3px);
  border-color: var(--news-gold);
}
.page-news__league-num {
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
  color: var(--news-gold);
}
.page-news__league-name {
  font-family: var(--font-cn);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--news-text);
  margin: 0;
}
.page-news__league-meta {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--news-ice);
  margin: 0;
}

/* ===== 文档升级区 ===== */
.page-news__docs-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-news__docs-image img,
.page-news__side img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border: 1px solid var(--news-hairline);
}
.page-news__docs-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.page-news__docs-list .accordion {
  background: rgba(16, 30, 64, 0.6);
  border: 1px solid var(--news-hairline);
  transition: border-color 240ms ease-out;
}
.page-news__docs-list .accordion:hover {
  border-color: var(--news-green);
}
.page-news__docs-list .accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: none;
  border: none;
  font-family: var(--font-cn);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--news-text);
  padding: 1rem 1.25rem;
  text-align: left;
  cursor: pointer;
}
.page-news__docs-list .accordion-header::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--news-green);
  flex-shrink: 0;
}
.page-news__docs-list .accordion-content {
  padding: 0 1.25rem 1.25rem 2.75rem;
}
.page-news__docs-list .accordion-content p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--news-ice);
  margin: 0;
}
.page-news__docs-list .accordion-content a {
  color: var(--news-green);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.page-news__docs-total {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--news-ice);
  margin: 1.5rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--news-hairline);
}

/* ===== 侧栏 ===== */
.page-news__side-note {
  padding: 1.5rem;
}
.page-news__side-note-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #6b4f2e;
  margin: 0 0 0.75rem;
}
.page-news__side-note p:last-child {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: #2a241c;
  margin: 0;
}
.page-news__section--side {
  padding-top: 1.5rem;
}
.page-news__section-head--side {
  margin-bottom: 1.25rem;
}
.page-news__section-title--side {
  font-size: 1.375rem;
}
.page-news__status-panel {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.page-news__status-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--news-hairline);
}
.page-news__status-item:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}
.page-news__status-label {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--news-ice);
}
.page-news__status-value {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--news-text);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.page-news__status-value .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--news-green);
  animation: page-news-breathe 2s ease-in-out infinite;
  flex-shrink: 0;
}
.page-news__status-tip {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--news-ice);
  margin: 1rem 0 0;
  padding: 0.875rem;
  border-left: 3px solid var(--news-gold);
  background: rgba(245, 184, 75, 0.06);
}

/* ===== 底部 CTA ===== */
.page-news__cta {
  margin-top: 4rem;
}
.page-news__cta-card {
  background: linear-gradient(120deg, rgba(16, 30, 64, 0.9) 0%, rgba(8, 12, 20, 0.95) 100%);
  border: 1px solid var(--news-hairline);
  padding: 2rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}
.page-news__cta-label {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--news-gold);
  margin: 0;
}
.page-news__cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.page-news__cta-link {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--news-ice);
  text-decoration: none;
  transition: color 240ms ease-out;
}
.page-news__cta-link:hover {
  color: var(--news-green);
}

/* ===== 返回顶部 ===== */
.page-news .back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: var(--news-green);
  color: #080C14;
  border: none;
  font-size: 1.375rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(0, 255, 136, 0.35);
  z-index: 100;
  transition: transform 240ms ease-out, background 240ms ease-out;
}
.page-news .back-to-top:hover {
  transform: translateY(-4px);
  background: #7dffc2;
}

/* ===== 动画 ===== */
@keyframes page-news-breathe {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.85); }
}
@media (prefers-reduced-motion: reduce) {
  .page-news__item-mark .status-dot,
  .page-news__status-value .status-dot {
    animation: none;
  }
}

/* ===== 响应式：窄屏优先，桌面增强 ===== */
@media (max-width: 640px) {
  .page-news__item {
    padding-left: 0.5rem;
  }
  .page-news__section-head {
    flex-direction: column;
    gap: 0.5rem;
  }
  .page-news__cta-card {
    padding: 1.5rem;
  }
  .page-news__side {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
  }
}

@media (min-width: 641px) {
  .page-news__cover {
    min-height: 420px;
  }
  .page-news__timeline {
    padding-left: 1rem;
  }
  .page-news__item {
    padding-left: 1.5rem;
  }
  .page-news__item::before {
    left: 0.375rem;
  }
}

@media (min-width: 768px) {
  .page-news__docs-layout {
    grid-template-columns: 5fr 7fr;
    gap: 2rem;
    align-items: start;
  }
  .page-news__docs-image {
    position: sticky;
    top: 8rem;
  }
}

@media (min-width: 1024px) {
  .page-news__grid {
    display: grid;
    grid-template-columns: 1fr var(--news-side-width);
    gap: 2rem;
    align-items: start;
  }
  .page-news__grid .col-span-8 {
    width: 100%;
  }
  .page-news__grid .col-span-3 {
    width: 100%;
  }
  .page-news__side {
    margin-top: 0.5rem;
    border-top: none;
    padding-top: 0;
    position: sticky;
    top: 7rem;
    align-self: start;
    max-height: calc(100vh - 8rem);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--news-hairline) transparent;
  }
  .page-news__grid .col-span-8 {
    width: calc(100%);
  }
  /* 非对称编辑部比例：8 主体 + 3 注释 + 剩余留白，用负 margin 增加杂志感 */
  .page-news__body {
    max-width: 1440px;
  }
}

@media (min-width: 1200px) {
  .page-news__grid {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: clamp(2.5rem, 5vw, 5rem);
  }
  .page-news__cover-content {
    padding-left: max(2.5rem, calc((100vw - 1320px) / 2));
  }
  .page-news__body {
    padding-left: max(1rem, calc((100vw - 1320px) / 2));
    padding-right: max(1rem, calc((100vw - 1320px) / 2));
  }
  .page-news__item-card {
    padding: 1.75rem 2rem;
  }
  .page-news__league-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}