/* ===== 赛场观察 · 页面专属样式（作用域 .page-news） ===== */

.page-news {
  --news-rail-w: 320px;
  background: var(--ink);
  color: var(--text-on-dark);
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 46px;
  background: var(--ink);
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: 54%;
  height: 176%;
  background: linear-gradient(160deg, rgba(255, 107, 53, 0.24), rgba(46, 204, 113, 0.06) 58%, transparent 82%);
  transform: rotate(12deg);
  pointer-events: none;
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 190px;
  height: 3px;
  background: linear-gradient(90deg, var(--dawn), var(--amber));
}

.page-news .news-hero .container {
  position: relative;
  z-index: 1;
}

.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

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

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

.page-news .news-hero__grid {
  display: grid;
  gap: 22px;
}

.page-news h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(33px, 6.4vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.page-news .section-lead {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-on-dark);
  opacity: 0.84;
}

.page-news .news-hero__note {
  padding: 20px 22px;
  border-radius: 4px;
  border-left: 3px solid var(--pitch);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-on-dark);
}

.page-news .news-hero__note p {
  margin: 0;
}

.page-news .news-hero__note-title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--pitch);
}

@media (min-width: 960px) {
  .page-news .news-hero {
    padding: 34px 0 62px;
  }

  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: end;
    gap: 44px;
  }
}

/* ---------- 主体两栏 ---------- */

.page-news .news-body {
  padding: 0 0 72px;
}

.page-news .split {
  display: grid;
  gap: 28px;
  align-items: start;
}

@media (min-width: 1040px) {
  .page-news .split {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    gap: 52px;
  }
}

/* ---------- 左侧条目索引 ---------- */

.page-news .rail {
  padding: 18px 16px 6px;
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  background: var(--ink-night);
}

@media (min-width: 1040px) {
  .page-news .rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
    max-height: calc(100vh - var(--header-h) - 40px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--ink-board) transparent;
  }
}

.page-news .rail-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--dawn);
}

.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.page-news .filter-chip {
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: var(--mist);
  font-family: var(--font-head);
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-news .filter-chip:hover {
  color: var(--amber);
  border-color: var(--amber);
}

.page-news .filter-chip:focus-visible {
  outline: 2px solid var(--dawn);
  outline-offset: 2px;
}

.page-news .filter-chip[data-active-filter],
.page-news .filter-chip[aria-pressed="true"] {
  color: var(--ink);
  background: var(--dawn);
  border-color: var(--dawn);
}

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

.page-news .rail-item {
  border-top: 1px solid var(--line-soft);
}

.page-news .rail-item[hidden] {
  display: none;
}

.page-news .rail-link {
  display: block;
  padding: 13px 2px;
  color: var(--text-on-dark);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

.page-news .rail-link:hover {
  color: var(--dawn);
}

.page-news .rail-link:focus-visible {
  outline: 2px solid var(--dawn);
  outline-offset: 2px;
}

.page-news .rail-time {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-news .rail-head {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.5;
}

.page-news .rail-tag {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 7px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
}

.page-news .rail-tag--data {
  color: var(--dawn);
}

.page-news .rail-tag--pitch {
  color: var(--pitch);
}

.page-news .rail-tag--amber {
  color: var(--amber);
}

/* ---------- 右侧阅读区 ---------- */

.page-news .news-read {
  display: grid;
  gap: 62px;
  min-width: 0;
}

.page-news #index-top,
.page-news .headline,
.page-news .news-section {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

/* 头条 */

.page-news .headline {
  border-radius: 4px;
  background: var(--ink-board);
  box-shadow: var(--shadow-card);
}

.page-news .headline__media {
  position: relative;
  overflow: hidden;
  border-radius: 4px 4px 0 0;
}

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

.page-news .headline__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7, 20, 39, 0.88) 4%, rgba(7, 20, 39, 0.18) 58%, transparent);
  pointer-events: none;
}

.page-news .headline__panel {
  position: relative;
  margin: -66px 14px 0;
  padding: 24px 20px 22px;
  border-radius: 4px;
  border-top: 3px solid var(--dawn);
  background: var(--glass-deep);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.page-news .headline__panel h2 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(23px, 3.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.page-news .headline__panel p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--text-on-dark);
  opacity: 0.87;
}

@media (min-width: 720px) {
  .page-news .headline__panel {
    margin: -122px 34px 0;
    padding: 32px 30px 28px;
  }
}

/* 章节标题 */

.page-news .news-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 18px;
  padding-top: 18px;
  border-top: 2px solid var(--line);
}

.page-news .news-section__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--dawn);
}

.page-news .news-section__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 2.7vw, 30px);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.page-news .news-section > p {
  max-width: 66ch;
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-on-dark);
  opacity: 0.86;
}

/* 图 */

.page-news .news-figure {
  margin: 22px 0;
  background: var(--ink-board);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

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

/* 要点列表 */

.page-news .news-list {
  list-style: none;
  margin: 20px 0;
  padding: 0;
}

.page-news .news-list > li {
  position: relative;
  max-width: 66ch;
  padding: 13px 0 13px 24px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-on-dark);
  opacity: 0.86;
}

.page-news .news-list > li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 22px;
  width: 10px;
  height: 2px;
  background: var(--pitch);
}

.page-news .news-list strong {
  color: #ffffff;
  font-weight: 700;
}

/* 时间轴 */

.page-news .timeline {
  position: relative;
  list-style: none;
  margin: 24px 0 0;
  padding: 0 0 0 26px;
}

.page-news .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--dawn), var(--pitch));
}

.page-news .timeline__item {
  position: relative;
  padding-bottom: 22px;
}

.page-news .timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--ink);
  border: 2px solid var(--dawn);
  transform: rotate(45deg);
}

.page-news .timeline__when {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-news .timeline__what {
  max-width: 62ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-on-dark);
  opacity: 0.86;
}

/* 行动按钮与回跳 */

.page-news .news-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-news .headline__back,
.page-news .news-top {
  margin: 8px 0 0;
}

.page-news .headline__back a,
.page-news .news-top a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-news .headline__back a:hover,
.page-news .news-top a:hover {
  color: var(--dawn);
}

.page-news .headline__back a:focus-visible,
.page-news .news-top a:focus-visible {
  outline: 2px solid var(--dawn);
  outline-offset: 3px;
}

/* ---------- 窄屏收口 ---------- */

@media (max-width: 480px) {
  .page-news .news-hero {
    padding: 22px 0 38px;
  }

  .page-news .rail {
    padding: 16px 12px 6px;
  }

  .page-news .news-read {
    gap: 48px;
  }

  .page-news .headline__panel {
    margin: -46px 10px 0;
    padding: 20px 16px 18px;
  }

  .page-news .timeline {
    padding-left: 22px;
  }

  .page-news .timeline__item::before {
    left: -22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .filter-chip,
  .page-news .rail-link {
    transition: none;
  }
}
<<<END>>>