.page-news {
  --news-heading: var(--font-heading);
  --news-body: var(--font-body);
  --news-mono: var(--font-mono);
  --news-gold: var(--gold);
  --news-cyan: var(--cyan);
  --news-orange: var(--orange);
  --news-panel: var(--panel);
  --news-bg: var(--bg);
  --news-line: var(--line);
  --news-text: var(--text);
  background: var(--news-bg);
  color: var(--news-text);
  font-family: var(--news-body);
  line-height: 1.7;
  overflow-x: hidden;
}

.page-news img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== Hero ===== */
.page-news__hero {
  position: relative;
  padding: 2.25rem 0 2rem;
  background:
    linear-gradient(135deg, rgba(212, 175, 55, 0.08) 0%, transparent 42%),
    linear-gradient(315deg, rgba(0, 229, 204, 0.05) 0%, transparent 32%),
    var(--news-panel);
  border-bottom: 3px solid var(--news-line);
}

.page-news__hero::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 120px;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 8px,
    rgba(212, 175, 55, 0.055) 8px,
    rgba(212, 175, 55, 0.055) 16px
  );
  pointer-events: none;
}

.page-news__hero-inner {
  position: relative;
  z-index: 1;
}

.page-news__breadcrumb {
  margin-bottom: 1.75rem;
}

.page-news__hero-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

.page-news__hero-copy {
  position: relative;
}

.page-news__hero-eyebrow {
  margin-bottom: 0.625rem;
}

.page-news__title {
  margin: 0;
  font-family: var(--news-heading);
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-news__title::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  margin-top: 1.125rem;
  background: linear-gradient(90deg, var(--news-gold) 0%, var(--news-cyan) 100%);
}

.page-news__subtitle {
  margin: 0.875rem 0 0;
  font-size: 1.0625rem;
  color: var(--gray-light);
  max-width: 36em;
}

.page-news__hero-index {
  display: none;
}

.page-news__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--news-line);
}

/* ===== 通用 Section ===== */
.page-news__section {
  padding: 2.75rem 0;
}

.page-news__latest {
  border-bottom: 1px solid var(--news-line);
}

.page-news__updates {
  background:
    linear-gradient(180deg, var(--news-bg) 0%, rgba(26, 26, 26, 0.72) 100%);
  border-bottom: 1px solid var(--news-line);
}

.page-news__section .section-heading {
  margin-bottom: 1.75rem;
}

/* ===== 01 最新动态 ===== */
.page-news__latest-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-news__feature {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
  border-top: 4px solid var(--news-gold);
}

.page-news__feature-img {
  border-radius: 0;
  background: var(--news-panel);
}

.page-news__feature-img::after {
  content: "实时数据面板";
  position: absolute;
  right: 0.75rem;
  bottom: 0.75rem;
  background: rgba(10, 10, 10, 0.86);
  border: 1px solid var(--news-line);
  color: var(--gray-light);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  padding: 0.25rem 0.625rem;
  z-index: 2;
}

.page-news__feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.page-news__feature-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  align-items: flex-start;
}

.page-news__card-topline {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-news__feature-body h3,
.page-news__mini-card h3 {
  margin: 0;
  font-family: var(--news-heading);
  font-weight: 700;
  font-size: 1.375rem;
  line-height: 1.32;
  color: var(--white);
}

.page-news__feature-body p,
.page-news__mini-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--gray-light);
}

.page-news__feature-stats {
  margin-top: 0.25rem;
  width: 100%;
}

.page-news__feature .btn {
  margin-top: 0.375rem;
}

.page-news__mini-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  justify-content: flex-start;
  min-height: 0;
  border-left-width: 4px;
  border-left-style: solid;
}

.page-news__mini-card--last {
  border-left-color: var(--news-gold);
}

.page-news__mini-card h3 {
  font-size: 1.125rem;
}

.page-news__inline-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: auto;
  font-family: var(--news-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--news-gold);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.2s ease, gap 0.2s ease;
}

.page-news__inline-link:hover {
  color: var(--news-cyan);
  gap: 0.5rem;
}

/* ===== 02 更新日志 ===== */
.page-news__updates-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-news__updates-intro {
  max-width: 42em;
}

.page-news__updates-intro p {
  margin: 0;
  font-size: 1.0625rem;
  color: var(--gray-light);
  border-left: 3px solid var(--news-gold);
  padding-left: 1rem;
}

.page-news__filter {
  min-width: 0;
}

.page-news__filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-bottom: 2px solid var(--news-line);
  padding-bottom: 0.75rem;
  margin-bottom: 1.75rem;
}

.page-news__filter-tab {
  appearance: none;
  background: transparent;
  border: 2px solid var(--news-line);
  color: var(--gray-light);
  font-family: var(--news-body);
  font-weight: 600;
  font-size: 0.875rem;
  line-height: 1.4;
  padding: 0.4375rem 1rem;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.page-news__filter-tab:hover,
.page-news__filter-tab:focus-visible {
  border-color: var(--news-gold);
  color: var(--white);
  outline: none;
}

.page-news .page-news__filter-tab[aria-selected="true"] {
  background: var(--news-gold);
  border-color: var(--news-gold);
  color: var(--news-bg);
}

.page-news__tabs-panel {
  min-width: 0;
}

.page-news__timeline-img {
  margin-bottom: 2rem;
  border: 2px solid var(--news-line);
  overflow: hidden;
  position: relative;
  background: var(--news-panel);
}

.page-news__timeline-img img {
  width: 100%;
  height: auto;
}

.page-news__timeline-img::after {
  content: "数据增长趋势";
  position: absolute;
  left: 0.75rem;
  bottom: 0.75rem;
  background: rgba(10, 10, 10, 0.84);
  border: 1px solid var(--news-line);
  color: var(--gray-light);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  padding: 0.25rem 0.625rem;
}

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

.page-news .timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--news-gold) 0%, var(--news-cyan) 55%, var(--news-orange) 100%);
  border-radius: 2px;
}

.page-news .timeline__item {
  position: relative;
  padding-left: 48px;
  padding-bottom: 2rem;
}

.page-news .timeline__item:last-child {
  padding-bottom: 0.5rem;
}

.page-news .timeline__item::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 3px solid var(--news-bg);
  box-shadow: 0 0 0 2px currentColor;
  z-index: 2;
}

.page-news .timeline__item:nth-child(1)::before {
  background: var(--news-gold);
  color: var(--news-gold);
}

.page-news .timeline__item:nth-child(2)::before {
  background: var(--news-cyan);
  color: var(--news-cyan);
}

.page-news .timeline__item:nth-child(3)::before {
  background: var(--news-orange);
  color: var(--news-orange);
}

.page-news .timeline__item:nth-child(4)::before {
  background: var(--news-gold);
  color: var(--news-gold);
}

.page-news .timeline__date {
  display: inline-block;
  font-family: var(--news-mono);
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1.2;
  letter-spacing: 0.06em;
  color: var(--news-gold);
  background: var(--news-bg);
  border: 2px solid var(--news-line);
  padding: 0.25rem 0.875rem 0.25rem 0.75rem;
  margin-bottom: 0.625rem;
}

.page-news .timeline__content {
  background: var(--news-panel);
  border: 2px solid var(--news-line);
  border-left: 4px solid var(--news-gold);
  padding: 1.125rem 1.25rem 1.25rem;
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.34);
}

.page-news .timeline__tag {
  display: inline-block;
  margin-bottom: 0.5rem;
}

.page-news .timeline__title {
  margin: 0 0 0.5rem;
  font-family: var(--news-heading);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.32;
  color: var(--white);
}

.page-news .timeline__content > p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--gray-light);
}

.page-news__details {
  margin-top: 0.875rem;
  border-top: 1px solid var(--news-line);
}

.page-news__details summary {
  cursor: pointer;
  padding: 0.625rem 0;
  font-family: var(--news-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--news-gold);
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  user-select: none;
}

.page-news__details summary::-webkit-details-marker {
  display: none;
}

.page-news__details summary::before {
  content: "+";
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  line-height: 1.15;
  text-align: center;
  border: 1px solid currentColor;
  font-size: 0.8125rem;
}

.page-news__details[open] summary {
  color: var(--news-cyan);
}

.page-news__details[open] summary::before {
  content: "-";
}

.page-news__details-list {
  margin: 0;
  padding: 0.625rem 0 0 1.25rem;
  font-size: 0.875rem;
  color: var(--gray-light);
}

.page-news__details-list li {
  margin-bottom: 0.375rem;
}

.page-news__details-list li::marker {
  color: var(--news-gold);
}

/* ===== 03 专题系列 ===== */
.page-news__features {
  background: var(--news-bg);
}

.page-news__feature-articles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
}

.page-news__featured-art {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-news__featured-art-img {
  border: 3px solid var(--news-line);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.4);
}

.page-news__featured-art--right .page-news__featured-art-img {
  border-top-color: var(--news-gold);
}

.page-news__featured-art--left .page-news__featured-art-img {
  border-top-color: var(--news-cyan);
}

.page-news__featured-art-body {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  align-items: flex-start;
}

.page-news__art-eyebrow {
  color: var(--news-gold);
}

.page-news__featured-art-body h3 {
  margin: 0;
  font-family: var(--news-heading);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.28;
  color: var(--white);
}

.page-news__featured-art-body > p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--gray-light);
}

.page-news__art-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.page-news__art-points li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.875rem;
  color: var(--gray-light);
}

.page-news__art-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.625rem;
  height: 0.625rem;
  background: var(--news-gold);
  transform: rotate(45deg);
}

.page-news__featured-art--right .page-news__art-points li::before {
  background: var(--news-cyan);
}

/* ===== 收尾区块 ===== */
.page-news__outro {
  padding: 3rem 0;
  background:
    linear-gradient(180deg, var(--news-bg) 0%, var(--news-panel) 100%);
  border-top: 4px solid var(--news-gold);
}

.page-news__outro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-news__trust-block {
  border: 3px solid var(--news-line);
  border-top: 4px solid var(--news-gold);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  align-items: flex-start;
  background: var(--news-bg);
}

.page-news__trust-title {
  margin: 0;
  font-family: var(--news-heading);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--white);
}

.page-news__trust-block > p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--gray-light);
  max-width: 36em;
}

.page-news__trust-stats {
  width: 100%;
  margin-top: 0.25rem;
}

.page-news__trust-block .btn {
  margin-top: 0.5rem;
}

.page-news__tag-cloud {
  padding: 1.5rem;
  border: 2px solid var(--news-line);
  background: rgba(26, 26, 26, 0.5);
}

.page-news__tag-cloud-title {
  margin: 0.5rem 0 1rem;
  font-family: var(--news-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
}

.page-news__tag-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.page-news__tag-list a {
  text-decoration: none;
}

/* ===== 平板以上 ===== */
@media (min-width: 768px) {
  .page-news__hero {
    padding: 3rem 0 2.25rem;
  }

  .page-news__hero-grid {
    grid-template-columns: 1fr 180px;
    align-items: center;
    gap: 2rem;
  }

  .page-news__hero-index {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
    justify-content: center;
    align-items: flex-end;
    border-left: 3px solid var(--news-gold);
    padding-left: 1.25rem;
  }

  .page-news__hero-index-key {
    font-family: var(--news-mono);
    font-size: 0.75rem;
    color: var(--gray-light);
    letter-spacing: 0.16em;
    text-transform: uppercase;
  }

  .page-news__hero-index-value {
    font-family: var(--news-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--news-gold);
    line-height: 1.1;
  }

  .page-news__hero-index-label {
    font-size: 0.75rem;
    color: var(--gray-light);
    max-width: 8em;
    text-align: right;
  }

  .page-news__feature-body {
    padding: 2rem;
  }

  .page-news__feature-img {
    min-height: 240px;
  }

  .page-news__timeline-img img,
  .page-news__featured-art-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .page-news__outro-grid {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }

  .page-news__featured-art {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-news__featured-art--right .page-news__featured-art-img {
    order: 2;
  }

  .page-news__filter-list {
    justify-content: flex-start;
  }
}

/* ===== 桌面端 ===== */
@media (min-width: 1024px) {
  .page-news__section {
    padding: 4.5rem 0;
  }

  .page-news__latest-grid {
    grid-template-columns: 1.35fr 1fr;
    grid-template-rows: auto auto auto;
    gap: 1.5rem;
  }

  .page-news__feature {
    grid-row: 1 / -1;
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    height: 100%;
  }

  .page-news__feature-img {
    min-height: 300px;
    max-height: 360px;
  }

  .page-news__mini-card {
    min-height: 0;
  }

  .page-news__updates-grid {
    grid-template-columns: 260px 1fr;
    gap: 3rem;
    align-items: start;
  }

  .page-news__updates-intro {
    position: sticky;
    top: 4rem;
  }

  .page-news__updates-intro p {
    font-size: 1.125rem;
  }

  .page-news .timeline {
    padding: 0.25rem 0;
  }

  .page-news .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-news .timeline__item {
    width: 50%;
    padding-left: 0;
    padding-right: 3rem;
    padding-bottom: 2.75rem;
    text-align: right;
  }

  .page-news .timeline__item::before {
    left: auto;
    right: -11px;
  }

  .page-news .timeline__item:nth-child(even) {
    margin-left: 50%;
    padding-left: 3rem;
    padding-right: 0;
    text-align: left;
  }

  .page-news .timeline__item:nth-child(even)::before {
    left: -11px;
    right: auto;
  }

  .page-news .timeline__content {
    text-align: left;
  }

  .page-news .timeline__item:nth-child(odd) .timeline__content {
    text-align: right;
  }

  .page-news .timeline__item:nth-child(even) .timeline__content {
    text-align: left;
  }

  .page-news .timeline__date {
    text-align: left;
    margin-bottom: 0.75rem;
  }

  .page-news__featured-art {
    gap: 2.5rem;
  }

  .page-news__featured-art--left {
    grid-template-columns: 5fr 7fr;
  }

  .page-news__featured-art--right {
    grid-template-columns: 7fr 5fr;
  }

  .page-news__featured-art-body h3 {
    font-size: 1.75rem;
  }

  .page-news__tag-cloud {
    padding: 2rem;
  }
}

/* ===== 宽屏优化 ===== */
@media (min-width: 1280px) {
  .page-news__latest-grid {
    gap: 2rem;
  }

  .page-news__feature-body {
    padding: 2.25rem;
  }

  .page-news__featured-art {
    gap: 3rem;
  }

  .page-news__outro {
    padding: 4rem 0;
  }
}

/* ===== 减少动效偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-news__inline-link,
  .page-news__details summary,
  .page-news__filter-tab {
    transition: none;
  }
}