/* ========== 动态页全站共享装饰延伸，不覆盖 header/footer ========== */
.page-news {
  --news-gold: var(--color-gold);
  --news-red: var(--color-red);
  --news-night: var(--color-night);
  --news-mist: var(--color-mist);
  --news-fog: var(--color-fog);
  --news-smoke: var(--color-smoke);
  --news-steel: var(--color-steel);
  --news-darkgold: var(--color-darkgold);
  --news-white: var(--color-white);
  --news-line: var(--line-color);
  --news-mono: var(--font-mono);
  background: var(--bg-body);
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  font-family: var(--news-mono);
  letter-spacing: .03em;
  padding: var(--space-3) 0 var(--space-2);
  margin: 0;
  color: rgba(245, 240, 230, .72);
}

.page-news .breadcrumb-link {
  color: rgba(245, 240, 230, .78);
  text-decoration: none;
  border-bottom: 1px dotted rgba(212, 160, 23, .45);
  transition: color 180ms ease, border-color 180ms ease;
}

.page-news .breadcrumb-link:hover {
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.page-news .breadcrumb-sep {
  color: rgba(245, 240, 230, .4);
}

.page-news .breadcrumb-current {
  color: var(--color-gold);
}

/* ---------- 页面深色头部 ---------- */
.page-news .news-page-head {
  position: relative;
  background:
    linear-gradient(120deg, rgba(212,160,23,.12) 0%, rgba(227,66,52,.05) 46%, rgba(26,26,46,0) 78%),
    repeating-linear-gradient(-45deg, transparent 0 16px, rgba(212,160,23,.07) 16px 17px),
    var(--news-night);
  color: var(--news-mist);
  overflow: hidden;
}

.page-news .news-page-head::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,160,23,.16) 0%, transparent 68%);
  pointer-events: none;
}

.page-news .page-head-inner {
  position: relative;
  z-index: 1;
  padding-bottom: var(--space-6);
}

/* ---------- 首屏标题 ---------- */
.page-news .news-hero {
  padding-top: var(--space-4);
  max-width: 880px;
}

.page-news .news-hero-kicker {
  font-family: var(--news-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--color-gold);
  margin: 0 0 var(--space-2);
  text-transform: uppercase;
  position: relative;
  padding-left: 18px;
}

.page-news .news-hero-kicker::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 12px;
  height: 1px;
  background: var(--color-red);
}

.page-news .news-hero-title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.7rem, 4.2vw, 2.8rem);
  line-height: 1.24;
  letter-spacing: .01em;
  color: var(--news-white);
  margin: 0 0 var(--space-3);
}

.page-news .news-hero-lead {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(245, 240, 230, .86);
  max-width: 620px;
  margin: 0 0 var(--space-4);
}

.page-news .news-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.page-news .news-hero-actions .btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .9rem;
  padding: 10px 18px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.page-news .news-hero-actions .btn-primary {
  background: linear-gradient(135deg, var(--color-red), var(--color-darkgold));
  color: var(--news-white);
  border: 1px solid transparent;
  box-shadow: 0 4px 16px rgba(227, 66, 52, .28);
}

.page-news .news-hero-actions .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(227, 66, 52, .36);
}

.page-news .news-hero-actions .btn-ghost {
  background: transparent;
  color: var(--news-mist);
  border: 1px solid rgba(245, 240, 230, .32);
}

.page-news .news-hero-actions .btn-ghost:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* ---------- 主体布局：移动端单列 ---------- */
.page-news .updates-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  padding: var(--space-5) var(--space-3) var(--space-8);
}

/* ---------- 侧边栏 ---------- */
.page-news .updates-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.page-news .updates-sidebar-panel {
  background: var(--news-white);
  border: 1px solid var(--news-line);
  border-radius: var(--radius);
  padding: var(--space-4);
  box-shadow: var(--shadow-1);
}

.page-news .sidebar-heading {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-night);
  margin: 0 0 var(--space-3);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-news .sidebar-heading-label {
  font-family: var(--news-mono);
  font-size: .72rem;
  color: var(--color-gold);
  letter-spacing: .1em;
}

/* ---------- 过滤器 ---------- */
.page-news .updates-filter {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: var(--space-2);
  scrollbar-width: thin;
}

.page-news .updates-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  border: 1px solid var(--news-line);
  background: transparent;
  font-family: var(--font-body);
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-body);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.page-news .updates-filter-btn .filter-num {
  font-family: var(--news-mono);
  font-size: .7rem;
  color: var(--color-gold);
}

.page-news .updates-filter-btn:hover {
  border-color: var(--color-gold);
  color: var(--color-red);
}

.page-news .updates-filter-btn[aria-selected="true"] {
  background: var(--color-night);
  border-color: var(--color-night);
  color: var(--news-mist);
}

.page-news .updates-filter-btn[aria-selected="true"] .filter-num {
  color: var(--color-gold);
}

/* ---------- 侧边提示 ---------- */
.page-news .sidebar-note {
  background: var(--news-night);
  border: 1px solid var(--news-gold);
  border-radius: var(--radius);
  padding: var(--space-4);
  position: relative;
  overflow: hidden;
}

.page-news .sidebar-note::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--color-gold), var(--color-red));
}

.page-news .sidebar-note-label {
  font-family: var(--news-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--color-gold);
  margin: 0 0 var(--space-2);
}

.page-news .sidebar-note-text {
  font-size: .84rem;
  line-height: 1.75;
  color: rgba(245, 240, 230, .82);
  margin: 0;
}

/* ---------- 主内容 ---------- */
.page-news .updates-content {
  min-width: 0;
}

.page-news .updates-hero-image {
  margin: 0 0 var(--space-5);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--news-line);
  box-shadow: var(--shadow-1);
  background: var(--color-fog);
}

.page-news .updates-hero-image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 时间线 ---------- */
.page-news .timeline {
  position: relative;
  padding-left: 24px;
}

.page-news .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--color-gold) 0%, var(--color-red) 50%, rgba(212, 160, 23, .18) 100%);
}

.page-news .timeline-section + .timeline-section {
  margin-top: var(--space-6);
}

.page-news .timeline-section-label {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.06rem;
  color: var(--color-night);
  margin: 0 0 var(--space-4);
  display: flex;
  align-items: baseline;
  gap: 8px;
  position: relative;
}

.page-news .tsl-index {
  font-family: var(--news-mono);
  font-size: .8rem;
  color: var(--color-red);
}

/* ---------- 时间线条目 ---------- */
.page-news .timeline-item {
  position: relative;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--news-line);
}

.page-news .timeline-marker {
  position: absolute;
  left: -24px;
  top: 26px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(212, 160, 23, .2);
}

.page-news .timeline-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 6px;
}

.page-news .seq {
  font-family: var(--news-mono);
  font-size: .74rem;
  color: var(--color-darkgold);
  border: 1px solid rgba(184, 134, 11, .32);
  border-radius: 3px;
  padding: 1px 6px;
  background: rgba(212, 160, 23, .08);
}

.page-news .version-mono {
  font-family: var(--news-mono);
  font-size: .78rem;
  font-weight: 600;
  color: var(--color-night);
  background: rgba(26, 26, 46, .06);
  padding: 2px 8px;
  border-radius: 3px;
  letter-spacing: .02em;
}

.page-news .timeline-time {
  font-family: var(--news-mono);
  font-size: .72rem;
  color: var(--text-muted);
}

.page-news .timeline-body h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.08rem;
  line-height: 1.45;
  color: var(--text-body);
  margin: 0 0 var(--space-2);
  display: inline-block;
  padding-bottom: 2px;
  background-image: linear-gradient(var(--color-red), var(--color-red));
  background-size: 0 2px;
  background-position: left bottom;
  background-repeat: no-repeat;
  transition: background-size 260ms ease;
}

.page-news .timeline-item:hover .timeline-body h3 {
  background-size: 100% 2px;
}

.page-news .timeline-body p {
  font-size: .89rem;
  line-height: 1.8;
  color: var(--text-body);
  margin: 0 0 var(--space-2);
  max-width: 62ch;
}

/* ---------- 标签 ---------- */
.page-news .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.page-news .tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 600;
  font-family: var(--news-mono);
  letter-spacing: .04em;
}

.page-news .tag::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.page-news .tag-feature {
  background: rgba(212, 160, 23, .16);
  color: #9A720D;
}

.page-news .tag-news {
  background: rgba(227, 66, 52, .12);
  color: var(--color-red);
}

.page-news .tag-stats {
  background: rgba(74, 144, 217, .14);
  color: #2F6FBF;
}

.page-news .tag-tool {
  background: rgba(255, 107, 53, .14);
  color: #E35E2B;
}

.page-news .tag-ui {
  background: rgba(26, 26, 46, .08);
  color: var(--color-night);
}

.page-news .tag-calib {
  background: rgba(184, 134, 11, .16);
  color: #8B6914;
}

.page-news .tag-season {
  background: rgba(227, 66, 52, .14);
  color: var(--color-red);
}

/* ---------- 折叠详情 ---------- */
.page-news .detail-toggle {
  margin: var(--space-2) 0 var(--space-2);
  border: 1px solid var(--news-line);
  border-radius: var(--radius);
  background: rgba(26, 26, 46, .02);
  transition: border-color 180ms ease;
}

.page-news .detail-toggle[open] {
  border-color: rgba(212, 160, 23, .4);
}

.page-news .detail-toggle summary {
  cursor: pointer;
  padding: 8px 12px 7px;
  font-size: .78rem;
  font-family: var(--news-mono);
  color: var(--text-muted);
  list-style: none;
  transition: color 180ms ease;
}

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

.page-news .detail-toggle summary::before {
  content: "[+ ] ";
  color: var(--color-gold);
}

.page-news .detail-toggle[open] summary::before {
  content: "[- ] ";
  color: var(--color-red);
}

.page-news .detail-toggle[open] summary {
  color: var(--color-red);
}

.page-news .detail-toggle p {
  padding: 0 14px 12px;
  font-size: .84rem;
  line-height: 1.75;
  color: var(--text-body);
  margin: 0;
}

/* ---------- 复制公告链接 ---------- */
.page-news .timeline-copy-link {
  display: inline-block;
  margin-top: 6px;
  font-size: .74rem;
  font-family: var(--news-mono);
  color: var(--color-steel);
  text-decoration: none;
  border-bottom: 1px dotted var(--color-steel);
  transition: color 180ms ease, border-color 180ms ease;
}

.page-news .timeline-copy-link:hover {
  color: var(--color-red);
  border-color: var(--color-red);
}

/* ---------- 图片组 ---------- */
.page-news .announce-visual,
.page-news .calibration-figure,
.page-news .season-figure {
  margin: var(--space-4) 0 var(--space-3);
  position: relative;
}

.page-news .announce-visual img,
.page-news .calibration-figure img,
.page-news .season-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  border: 1px solid var(--news-line);
}

.page-news figcaption {
  font-size: .74rem;
  color: var(--text-muted);
  font-family: var(--news-mono);
  margin-top: 6px;
  text-align: right;
  letter-spacing: .02em;
}

/* ---------- 索引面板 ---------- */
.page-news .tabs-panel {
  margin-top: 0;
}

.page-news .index-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-news .index-card {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  grid-template-areas:
    "num meta arrow"
    "num title arrow";
  gap: 2px 12px;
  padding: var(--space-3);
  border: 1px solid var(--news-line);
  border-radius: var(--radius);
  background: var(--news-white);
  text-decoration: none;
  color: var(--text-body);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.page-news .index-card:hover {
  border-color: rgba(227, 66, 52, .5);
  box-shadow: 0 4px 16px rgba(26, 26, 46, .08);
  transform: translateY(-2px);
}

.page-news .index-num {
  grid-area: num;
  font-family: var(--news-mono);
  font-size: .76rem;
  color: var(--color-gold);
  align-self: start;
  padding-top: 3px;
}

.page-news .index-meta {
  grid-area: meta;
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-news .index-meta .version-mono {
  font-size: .72rem;
  padding: 1px 6px;
}

.page-news .index-meta .tag {
  font-size: .68rem;
  padding: 2px 8px;
}

.page-news .index-title {
  grid-area: title;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .96rem;
  line-height: 1.4;
  color: var(--color-night);
  transition: color 160ms ease;
}

.page-news .index-card:hover .index-title {
  color: var(--color-red);
}

.page-news .index-arrow {
  grid-area: arrow;
  align-self: center;
  font-family: var(--news-mono);
  font-size: 1rem;
  color: var(--color-gold);
}

/* ---------- 键盘焦点可见性 ---------- */
.page-news a:focus-visible,
.page-news button:focus-visible,
.page-news summary:focus-visible {
  outline: 2px dashed var(--color-gold);
  outline-offset: 2px;
}

/* ---------- 移动端以上：桌面双栏 ---------- */
@media (min-width: 820px) {

  .page-news .updates-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: var(--space-6);
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .page-news .updates-sidebar {
    position: sticky;
    top: 88px;
    align-self: start;
  }

  .page-news .updates-filter {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news .updates-filter-btn {
    border-radius: var(--radius);
    width: 100%;
    justify-content: flex-start;
    padding: 10px 14px;
  }

  .page-news .updates-filter-btn[aria-selected="true"] {
    border-left: 3px solid var(--color-gold);
  }

  .page-news .timeline-item {
    padding: var(--space-4) 0;
  }

  .page-news .timeline-meta {
    gap: 12px;
  }

  .page-news .timeline-section + .timeline-section {
    margin-top: var(--space-7);
  }

  .page-news .calibration-figure {
    max-width: 420px;
    margin-left: auto;
    margin-right: 0;
  }

  .page-news .season-figure {
    max-width: 620px;
    margin-left: auto;
    margin-right: 0;
  }

  .page-news .announce-visual {
    max-width: 380px;
  }

  .page-news .index-card {
    grid-template-columns: 40px 1fr auto;
    padding: var(--space-3) var(--space-4);
  }
}

/* ---------- 大桌面端 ---------- */
@media (min-width: 1200px) {
  .page-news .updates-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: var(--space-7);
  }

  .page-news .timeline {
    padding-left: 32px;
  }

  .page-news .timeline::before {
    left: 8px;
  }

  .page-news .timeline-marker {
    left: -32px;
    width: 13px;
    height: 13px;
  }

  .page-news .timeline-body p {
    font-size: .92rem;
  }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .timeline-body h3,
  .page-news .index-card,
  .page-news .news-hero-actions .btn,
  .page-news .updates-filter-btn,
  .page-news .index-card:hover {
    transition: none;
    transform: none;
  }
}