/* ====================================================================
   news.html v2 — 时间流主题 (Stream)
   依赖: tokens.css / ct.css
   ==================================================================== */

/* ==================== Hero (居中标题 + 搜索 + 底部 ticker) ==================== */
.ct-news-hero {
  position: relative;
  padding-top: calc(var(--ct-header-h) + var(--ct-space-9));
  padding-bottom: 0;
  overflow: hidden;
  isolation: isolate;
  background: radial-gradient(ellipse at top, rgba(19,26,46,0.55), var(--ct-bg) 65%);
}
.ct-news-hero__glow {
  top: -120px;
  right: -160px;
  width: 640px;
  height: 640px;
  opacity: 0.5;
}
.ct-news-hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--ct-space-5);
  text-align: center;
  padding-bottom: var(--ct-space-9);
}
.ct-news-hero__title { margin: 0; max-width: 18ch; }
.ct-news-hero__lead { max-width: 640px; text-align: center; margin: 0 auto; }

/* 搜索 */
.ct-news-search {
  display: flex;
  align-items: center;
  gap: var(--ct-space-2);
  width: 100%;
  max-width: 560px;
  margin-top: var(--ct-space-4);
  padding: 6px 6px 6px 24px;
  background: var(--ct-surface);
  border: 1px solid var(--ct-border);
  border-radius: var(--ct-radius-pill);
  transition: border-color var(--ct-dur) var(--ct-ease-out), box-shadow var(--ct-dur) var(--ct-ease-out);
}
.ct-news-search:focus-within {
  border-color: var(--ct-border-gold);
  box-shadow: 0 0 0 4px var(--ct-gold-soft);
}
.ct-news-search__icon { color: var(--ct-text-mute); }
.ct-news-search__input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: 0;
  padding: 12px 0;
  color: var(--ct-text);
  font-family: var(--ct-font-ui);
  font-size: var(--ct-fs-body);
}
.ct-news-search__input::placeholder { color: var(--ct-text-mute); }
.ct-news-search__btn {
  background: var(--ct-gold);
  color: var(--ct-text-on-gold);
  border: 0;
  padding: 10px 22px;
  border-radius: var(--ct-radius-pill);
  cursor: pointer;
  font-family: var(--ct-font-ui);
  font-size: var(--ct-fs-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background var(--ct-dur) var(--ct-ease-out), transform var(--ct-dur-fast) var(--ct-ease-out);
}
.ct-news-search__btn:hover {
  background: var(--ct-gold-hover);
  transform: translateY(-1px);
}

/* ==================== Ticker (横滚跑马灯) ==================== */
.ct-ticker {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  background: rgba(7, 11, 22, 0.45);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--ct-border);
  border-bottom: 1px solid var(--ct-border);
  height: 56px;
  overflow: hidden;
}
/* 左侧 label 标签 */
.ct-ticker__label {
  order: -1;
  display: inline-flex;
  align-items: center;
  gap: var(--ct-space-2);
  height: 100%;
  padding: 0 var(--ct-space-5);
  background: var(--ct-gold);
  color: var(--ct-text-on-gold);
  font-family: var(--ct-font-ui);
  font-size: var(--ct-fs-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  position: relative;
  z-index: 2;
}
.ct-ticker__label i { font-size: 12px; }
.ct-ticker__label::after {
  content: '';
  position: absolute;
  top: 0;
  right: -16px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 28px 0 28px 16px;
  border-color: transparent transparent transparent var(--ct-gold);
}
.ct-ticker__viewport {
  position: relative;
  height: 100%;
  overflow: hidden;
}
.ct-ticker__track {
  display: inline-flex;
  align-items: center;
  height: 100%;
  white-space: nowrap;
  gap: var(--ct-space-7);
  padding-left: var(--ct-space-7);
  animation: ct-ticker-scroll 38s linear infinite;
  will-change: transform;
}
.ct-ticker:hover .ct-ticker__track { animation-play-state: paused; }
@keyframes ct-ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.ct-ticker__item {
  display: inline-flex;
  align-items: center;
  gap: var(--ct-space-2);
  color: var(--ct-text-soft);
  font-size: var(--ct-fs-sm);
  text-decoration: none;
  transition: color var(--ct-dur-fast) var(--ct-ease-out);
}
.ct-ticker__item:hover { color: var(--ct-gold); }
.ct-ticker__item-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--ct-radius-pill);
  background: var(--ct-gold-soft);
  color: var(--ct-gold);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}
.ct-ticker__item-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--ct-text-mute);
  display: inline-block;
}

/* 左右淡出蒙版 */
.ct-ticker__edge {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 64px;
  z-index: 2;
  pointer-events: none;
}
.ct-ticker__edge--left  {
  left: 0;
  background: linear-gradient(90deg, rgba(7,11,22,0.9), transparent);
}
.ct-ticker__edge--right {
  right: 0;
  background: linear-gradient(-90deg, rgba(7,11,22,0.9), transparent);
}

@media (max-width: 720px) {
  .ct-ticker { height: 48px; }
  .ct-ticker__label { padding: 0 var(--ct-space-4); }
  .ct-ticker__label::after { border-width: 24px 0 24px 12px; }
}

/* ==================== Spotlight (第一条文章, 全宽大图) ==================== */
.ct-news-spotlight-section { padding-top: var(--ct-space-9); padding-bottom: var(--ct-space-7); }

.ct-spotlight {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 21 / 9;
  border-radius: var(--ct-radius-2xl);
  overflow: hidden;
  background: var(--ct-bg-elev);
  text-decoration: none;
  color: inherit;
  isolation: isolate;
  border: 1px solid var(--ct-border);
  transition: transform var(--ct-dur) var(--ct-ease-out),
              border-color var(--ct-dur) var(--ct-ease-out),
              box-shadow var(--ct-dur) var(--ct-ease-out);
}
.ct-spotlight:hover {
  transform: translateY(-4px);
  border-color: var(--ct-border-gold);
  box-shadow: var(--ct-shadow-lg);
}
.ct-spotlight__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 1.4s var(--ct-ease-out);
}
.ct-spotlight:hover .ct-spotlight__bg { transform: scale(1.06); }
.ct-spotlight__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(7, 11, 22, 0.95) 0%,
    rgba(7, 11, 22, 0.7) 30%,
    rgba(7, 11, 22, 0.2) 60%,
    transparent 100%
  );
}
.ct-spotlight__body {
  position: absolute;
  inset: auto var(--ct-space-8) var(--ct-space-8) var(--ct-space-8);
  display: flex;
  flex-direction: column;
  gap: var(--ct-space-3);
  z-index: 1;
  max-width: 720px;
}
.ct-spotlight__pin {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: var(--ct-space-2);
  padding: 6px 14px;
  border-radius: var(--ct-radius-pill);
  background: var(--ct-gold);
  color: var(--ct-text-on-gold);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.ct-spotlight__tag { align-self: flex-start; }
.ct-spotlight__title {
  font-family: var(--ct-font-display);
  font-size: clamp(22px, 3vw, 38px);
  font-weight: 600;
  line-height: 1.25;
  color: var(--ct-text);
  margin: 0;
  letter-spacing: -0.01em;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ct-spotlight__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ct-space-5);
  color: var(--ct-text-mute);
  font-size: var(--ct-fs-sm);
}
.ct-spotlight__meta i { margin-right: 6px; color: var(--ct-text-soft); }

@media (max-width: 720px) {
  .ct-spotlight { aspect-ratio: 4 / 5; }
  .ct-spotlight__body { inset: auto var(--ct-space-5) var(--ct-space-5) var(--ct-space-5); }
}

/* ==================== Category Pill Filter (下划线动画) ==================== */
.ct-news-filters { padding: 0 0 var(--ct-space-7); }
.ct-news-cats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--ct-space-2);
}
.ct-news-cat {
  position: relative;
  display: inline-block;
  padding: 8px 20px;
  background: transparent;
  color: var(--ct-text-soft);
  font-family: var(--ct-font-ui);
  font-size: var(--ct-fs-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: color var(--ct-dur) var(--ct-ease-out);
}
.ct-news-cat::after {
  content: '';
  position: absolute;
  left: 20%;
  right: 20%;
  bottom: 0;
  height: 1px;
  background: var(--ct-gold);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--ct-dur) var(--ct-ease-out);
}
.ct-news-cat:hover { color: var(--ct-text); }
.ct-news-cat:hover::after { transform: scaleX(1); }
.ct-news-cat.is-active {
  color: var(--ct-gold);
}
.ct-news-cat.is-active::after {
  left: 10%;
  right: 10%;
  height: 2px;
  transform: scaleX(1);
  box-shadow: 0 0 12px var(--ct-gold-glow-strong);
}

/* ==================== Article Grid (等高 3 列) ==================== */
.ct-news-grid-section { padding-top: 0; padding-bottom: var(--ct-space-9); }
.ct-news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--ct-space-5);
}
.ct-news-card {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  background: var(--ct-surface);
  border: 1px solid var(--ct-border);
  border-radius: var(--ct-radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform var(--ct-dur) var(--ct-ease-out),
              border-color var(--ct-dur) var(--ct-ease-out),
              box-shadow var(--ct-dur) var(--ct-ease-out);
}
.ct-news-card:hover {
  z-index: 2;
  transform: translateY(-4px);
  border-color: var(--ct-border-gold);
  box-shadow: var(--ct-shadow-md);
}
.ct-news-card__image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.ct-news-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.7s var(--ct-ease-out);
}
.ct-news-card:hover .ct-news-card__image img {
  transform: scale(1.05);
}
.ct-news-card__body {
  padding: var(--ct-space-5);
  display: flex;
  flex-direction: column;
  gap: var(--ct-space-3);
  flex: 1;
}
.ct-news-card__tag { align-self: flex-start; }
.ct-news-card__title {
  font-family: var(--ct-font-display);
  font-size: var(--ct-fs-h4);
  font-weight: 600;
  line-height: 1.35;
  color: var(--ct-text);
  margin: 0;
  letter-spacing: -0.01em;
}
.ct-news-card__meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ct-space-3);
  padding-top: var(--ct-space-4);
  border-top: 1px solid var(--ct-border);
  color: var(--ct-text-mute);
  font-size: var(--ct-fs-xs);
}
.ct-news-card__meta i { margin-right: 4px; color: var(--ct-text-soft); }

@media (max-width: 1080px) {
  .ct-news-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .ct-news-grid { grid-template-columns: 1fr; }
}

/* ==================== 分页 ==================== */
.ct-pagination {
  margin-top: var(--ct-space-9);
  display: flex;
  justify-content: center;
  gap: var(--ct-space-2);
}
.ct-pagination__btn {
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--ct-border);
  background: var(--ct-surface);
  color: var(--ct-text-soft);
  font-family: var(--ct-font-ui);
  font-size: var(--ct-fs-sm);
  font-weight: 500;
  border-radius: var(--ct-radius-pill);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--ct-dur) var(--ct-ease-out);
}
.ct-pagination__btn:hover:not(:disabled) {
  border-color: var(--ct-border-gold);
  color: var(--ct-text);
}
.ct-pagination__btn--active {
  background: var(--ct-gold);
  color: var(--ct-text-on-gold);
  border-color: var(--ct-gold);
}
.ct-pagination__btn:disabled { opacity: 0.4; cursor: not-allowed; }
.ct-pagination__btn--arrow { font-size: 12px; }

/* ==================== 空态 ==================== */
.ct-news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--ct-space-10) 0;
  color: var(--ct-text-mute);
}
.ct-news-empty i {
  font-size: 48px;
  margin-bottom: var(--ct-space-4);
  display: block;
  color: var(--ct-text-mute);
}

/* ==================== 搜索模式 — 只显示 grid 结果, 其他模块淡出 + 折起 ==================== */
.ct-news-spotlight-section,
.ct-news-filters,
.ct-ticker {
  transition:
    opacity 0.32s var(--ct-ease-out),
    max-height 0.4s var(--ct-ease-out),
    padding-top 0.4s var(--ct-ease-out),
    padding-bottom 0.4s var(--ct-ease-out),
    margin-top 0.4s var(--ct-ease-out),
    margin-bottom 0.4s var(--ct-ease-out);
  max-height: 800px;
  overflow: hidden;
}
.ct-news--searching .ct-news-spotlight-section,
.ct-news--searching .ct-news-filters,
.ct-news--searching .ct-ticker {
  opacity: 0;
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  margin-top: 0;
  margin-bottom: 0;
  pointer-events: none;
}

/* ==================== Loader (圆圈 spinner) ==================== */
.ct-news-loader {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--ct-space-9) 0;
  animation: ct-fade-in 0.2s var(--ct-ease-out) backwards;
}
.ct-news-loader__spinner {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 3px solid var(--ct-border-strong);
  border-top-color: var(--ct-gold);
  animation: ct-news-spin 0.85s linear infinite;
}
@keyframes ct-news-spin { to { transform: rotate(360deg); } }
@keyframes ct-fade-in { from { opacity: 0; } to { opacity: 1; } }

/* ==================== 卡片入场 stagger ==================== */
/* 通过 .is-stagger-in class 切换 + reflow 强制重启动画 (JS 控制) */
.ct-news-grid.is-stagger-in .ct-news-card {
  animation: ct-news-card-in 0.5s var(--ct-ease-out) backwards;
}
.ct-news-grid.is-stagger-in .ct-news-card:nth-child(1) { animation-delay: 0.04s; }
.ct-news-grid.is-stagger-in .ct-news-card:nth-child(2) { animation-delay: 0.10s; }
.ct-news-grid.is-stagger-in .ct-news-card:nth-child(3) { animation-delay: 0.16s; }
.ct-news-grid.is-stagger-in .ct-news-card:nth-child(4) { animation-delay: 0.22s; }
.ct-news-grid.is-stagger-in .ct-news-card:nth-child(5) { animation-delay: 0.28s; }
.ct-news-grid.is-stagger-in .ct-news-card:nth-child(6) { animation-delay: 0.34s; }
.ct-news-grid.is-stagger-in .ct-news-card:nth-child(7) { animation-delay: 0.40s; }
.ct-news-grid.is-stagger-in .ct-news-card:nth-child(8) { animation-delay: 0.46s; }
.ct-news-grid.is-stagger-in .ct-news-card:nth-child(9) { animation-delay: 0.52s; }
@keyframes ct-news-card-in {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}