/* ===== 动态观察 page-news 专属样式 ===== */
.page-news {
  --news-gap: 20px;
  --news-gap-lg: 40px;
  --news-radius: var(--radius-lg);
  padding: 24px 0 80px;
}

.page-news img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .breadcrumbs {
  margin: 0 0 32px;
}

.page-news__intro {
  margin: 0 0 56px;
}

.page-news__intro .eyebrow {
  color: var(--color-gold);
  margin-bottom: 12px;
}

.page-news__intro h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--color-white);
  margin: 0 0 20px;
  max-width: 920px;
}

.page-news__intro .lead {
  margin: 0 0 24px;
  max-width: 740px;
  color: var(--color-text);
}

.page-news__tick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.news-section {
  scroll-margin-top: calc(var(--header-height) + 24px);
  margin-bottom: var(--news-gap-lg);
}

.news-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px;
  margin-bottom: 28px;
}

.news-section__head .eyebrow {
  color: var(--color-cyan);
  margin-bottom: 0;
}

.news-section__head h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.6rem);
  line-height: 1.1;
  color: var(--color-white);
  margin: 0;
}

.news-section__head .lead {
  width: 100%;
  margin: 8px 0 0;
  max-width: 640px;
  color: var(--color-text-muted);
}

/* 最新发布 */
.news-latest {
  display: grid;
  gap: var(--news-gap-lg);
}

.news-feature {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-purple-accent));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--news-radius);
  padding: 12px;
  display: grid;
  gap: 18px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

.news-feature__media {
  border-radius: calc(var(--news-radius) - 6px);
  overflow: hidden;
  position: relative;
}

.news-feature__media img {
  display: block;
  width: 100%;
  aspect-ratio: 1200 / 600;
}

.news-feature__body {
  padding: 4px 12px 16px;
}

.news-feature__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.news-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-cyan);
}

.news-feature h3 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
  line-height: 1.12;
  color: var(--color-white);
  margin: 0 0 12px;
}

.news-feature p {
  margin: 0 0 18px;
  color: rgba(224, 224, 224, 0.88);
  line-height: 1.75;
  max-width: 720px;
}

.news-feature__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 侧栏卡片列表 */
.news-rail {
  display: grid;
  gap: 16px;
  align-content: start;
}

.news-card {
  background: var(--color-surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: transform 0.35s var(--ease-out), border-color 0.35s var(--ease-out);
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 215, 0, 0.45);
}

.news-card--expand summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  list-style: none;
}

.news-card--expand summary::-webkit-details-marker {
  display: none;
}

.news-card__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--color-white);
  flex: 1 1 200px;
}

.news-card--expand summary::after {
  content: "展开";
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-gold);
  border: 1px solid currentColor;
  border-radius: var(--radius-pill);
  padding: 4px 10px;
}

.news-card--expand[open] summary::after {
  content: "收起";
}

.news-card--expand p {
  margin: 14px 0 0;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* 活动周期对照 */
.news-section--cycle {
  background: radial-gradient(circle at 90% 20%, rgba(74, 63, 138, 0.28), transparent 42%),
    linear-gradient(180deg, rgba(13, 13, 26, 0.4), transparent);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 28px 0 32px;
}

.news-cycle {
  display: grid;
  gap: var(--news-gap-lg);
  align-items: center;
}

.news-cycle__chart {
  overflow-x: auto;
}

.news-cycle__chart svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 720px;
}

.cycle-track {
  fill: none;
  stroke: rgba(255, 215, 0, 0.35);
  stroke-width: 2;
  stroke-dasharray: 4 8;
}

.cycle-point circle {
  fill: var(--color-gold);
  filter: drop-shadow(0 0 6px rgba(255, 215, 0, 0.45));
}

.cycle-point text {
  font-family: var(--font-body);
  font-size: 13px;
  fill: var(--color-text);
}

.cycle-point text:first-of-type {
  font-family: var(--font-mono);
  font-weight: 700;
  fill: var(--color-white);
}

.news-cycle__table {
  width: 100%;
  margin-top: 24px;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 320px;
}

.news-cycle__caption {
  caption-side: top;
  text-align: left;
  padding: 8px 0 12px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-cyan);
}

.news-cycle__table th,
.news-cycle__table td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.news-cycle__table th {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gold);
}

.news-cycle__table td:last-child {
  font-family: var(--font-mono);
  color: var(--color-white);
}

/* 分类筛选 */
.news-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  width: 100%;
}

.news-filters__pill {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-text);
  text-decoration: none;
  background: rgba(26, 26, 46, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-pill);
  padding: 10px 18px;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}

.news-filters__pill:hover,
.news-filters__pill.is-active {
  color: var(--color-primary);
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  border-color: transparent;
}

.news-cat {
  margin-top: 32px;
  padding: 22px;
  background: rgba(26, 26, 46, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  scroll-margin-top: calc(var(--header-height) + 24px);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.page-news .news-cat:target {
  border-color: rgba(255, 215, 0, 0.7);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.12);
}

.news-cat__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 8px;
}

.news-cat__head h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-white);
  margin: 0;
}

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

.news-cat__list li {
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.news-cat__list li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.news-cat__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.news-cat__item-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-white);
}

.news-cat__item-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-cyan);
}

.news-cat__list p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.news-cat__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 10px;
}

.news-cat__figure {
  border-radius: var(--radius-md);
  overflow: hidden;
}

/* 更新记录 */
.news-updates {
  display: grid;
  gap: var(--news-gap-lg);
}

.news-update-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.news-update-list__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px 12px;
  padding: 16px 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.news-update-list__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-white);
}

.news-update-list__desc {
  color: var(--color-text);
  line-height: 1.5;
}

.news-update-list__tag {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gold);
  border: 1px solid rgba(255, 215, 0, 0.5);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
}

.news-updates__note {
  margin-top: 18px;
  padding: 14px 16px;
  background: rgba(74, 63, 138, 0.18);
  border-left: 3px solid var(--color-gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.news-updates__aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

.news-updates__aside-note {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* 底部导航提示 */
.news-note {
  margin-top: 48px;
}

.news-note__card {
  background: linear-gradient(135deg, rgba(19, 26, 63, 0.8), rgba(74, 63, 138, 0.35));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
}

.news-note__title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-white);
  margin: 0 0 10px;
}

.news-note__text {
  margin: 0 0 20px;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 640px;
}

.news-note__text a {
  color: var(--color-gold);
}

.news-note__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 桌面布局 */
@media (min-width: 700px) {
  .news-latest {
    grid-template-columns: 8fr 4fr;
    align-items: start;
  }

  .news-cycle {
    grid-template-columns: 5fr 7fr;
    gap: 32px;
  }

  .news-updates {
    grid-template-columns: 6fr 4fr;
    align-items: start;
  }

  .news-update-list__item {
    grid-template-columns: 150px 1fr auto;
    align-items: center;
  }

  .news-cat__grid {
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-news {
    padding-top: 48px;
  }

  .page-news__intro {
    margin-bottom: 72px;
  }

  .news-section {
    margin-bottom: 64px;
  }

  .news-latest {
    gap: 32px;
  }

  .news-cycle {
    gap: 48px;
  }
}