.page-news {
  --news-card-line: #3A4C5E;
  --news-soft-line: #DFE5EA;
  background: var(--c-light);
}

/* ============ 首屏 Hero ============ */
.page-news .news-hero {
  position: relative;
  background: var(--c-deep);
  color: var(--c-pale);
  padding: 2.25rem 0 3rem;
  overflow: hidden;
  border-bottom: 4px solid var(--c-orange);
}

.page-news .hero-backdrop {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.page-news .back-num {
  position: absolute;
  font-family: var(--font-data);
  font-weight: 700;
  color: rgba(232, 237, 242, 0.07);
  line-height: 1;
  white-space: nowrap;
  user-select: none;
  letter-spacing: -0.04em;
}

.page-news .back-num-1 {
  top: -16px;
  left: -10px;
  font-size: clamp(6rem, 20vw, 13rem);
}

.page-news .back-num-2 {
  bottom: -14px;
  right: 4%;
  font-size: clamp(3.5rem, 9vw, 7rem);
  color: rgba(255, 106, 0, 0.22);
}

.page-news .back-num-3 {
  top: 42%;
  left: 52%;
  font-size: clamp(2.5rem, 6vw, 5rem);
  opacity: 0.55;
}

.page-news .back-num-4 {
  bottom: 8%;
  left: 28%;
  font-size: clamp(1.6rem, 4vw, 3rem);
  color: rgba(255, 209, 102, 0.2);
}

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

.page-news .breadcrumb {
  margin-bottom: 1.75rem;
  font-size: 0.85rem;
}

.page-news .breadcrumb a {
  color: var(--c-pale);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 237, 242, 0.4);
}

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

.page-news .breadcrumb-sep {
  margin: 0 0.5rem;
  color: rgba(232, 237, 242, 0.5);
}

.page-news .news-hero-inner {
  max-width: 780px;
}

.page-news .news-hero-inner h1 {
  font-family: var(--font-title);
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  line-height: 1.05;
  margin: 0.5rem 0 0.5rem;
  letter-spacing: -0.01em;
  color: #ffffff;
  position: relative;
  display: inline-block;
}

.page-news .news-hero-inner h1::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -10px;
  width: 52px;
  height: 5px;
  background: var(--c-orange);
}

.page-news .hero-lede {
  max-width: 560px;
  color: rgba(232, 237, 242, 0.82);
  font-size: 1.0625rem;
  line-height: 1.7;
  margin-top: 1.5rem;
}

.page-news .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem 1.5rem;
  margin-top: 2.5rem;
  border-top: 1px solid rgba(232, 237, 242, 0.18);
  padding-top: 1.5rem;
}

.page-news .hero-stat {
  padding: 0.2rem 0;
}

.page-news .hero-stat-value {
  display: block;
  font-family: var(--font-data);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--c-gold);
  line-height: 1.1;
}

.page-news .hero-stat-label {
  display: block;
  font-size: 0.8125rem;
  color: rgba(232, 237, 242, 0.68);
  margin-top: 0.3rem;
}

/* ============ 通用 Section 头 ============ */
.page-news .section-kicker {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-teal);
  margin-bottom: 0.4rem;
}

.page-news .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  margin-bottom: 2rem;
}

.page-news .section-head h2 {
  font-family: var(--font-title);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--c-deep);
  margin: 0;
  line-height: 1.12;
}

.page-news .section-note {
  max-width: 420px;
  color: #5A6A7A;
  font-size: 0.9375rem;
  line-height: 1.55;
  margin: 0;
}

/* ============ 最新动态区 ============ */
.page-news .news-listing {
  background: var(--c-light);
  padding: 3.25rem 0 4rem;
}

.page-news .filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.page-news .filter-btn {
  appearance: none;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  border: 2px solid var(--c-line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--c-body);
  cursor: pointer;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.2s var(--ease);
}

.page-news .filter-btn:hover {
  border-color: var(--c-orange);
  color: var(--c-orange);
}

.page-news .filter-btn[data-active] {
  background: var(--c-orange);
  border-color: var(--c-orange);
  color: #ffffff;
}

/* ============ 时间线 ============ */
.page-news .timeline-grid {
  position: relative;
  padding: 0.5rem 0 0.25rem;
}

.page-news .timeline-grid::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: rgba(44, 62, 80, 0.32);
  border-radius: 2px;
}

.page-news .journal-item {
  position: relative;
  padding-left: 3.25rem;
  margin-bottom: 2rem;
}

.page-news .journal-item:last-child {
  margin-bottom: 0;
}

.page-news .timeline-mark {
  position: absolute;
  left: 3px;
  top: 30px;
  width: 24px;
  height: 24px;
  color: var(--c-orange);
  text-align: center;
  z-index: 1;
}

.page-news .timeline-mark svg {
  width: 20px;
  height: 20px;
  display: block;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 26, 0.25));
}

.page-news .timeline-card {
  background: #ffffff;
  border: 3px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: 0 6px 18px rgba(0, 0, 26, 0.1);
  padding: 1.35rem;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-news .timeline-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.page-news .journal-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
}

.page-news .journal-side {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.page-news .journal-tag {
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-news .journal-time {
  font-family: var(--font-data);
  font-size: 0.8rem;
  color: #6A7A8A;
}

.page-news .journal-main h3 {
  font-family: var(--font-title);
  font-size: 1.16rem;
  line-height: 1.32;
  color: var(--c-deep);
  margin: 0 0 0.55rem;
}

.page-news .journal-main > p {
  font-size: 0.9375rem;
  line-height: 1.62;
  color: #3D4D5C;
  margin: 0 0 0.75rem;
}

.page-news .journal-img {
  margin: 0.85rem 0 0.6rem;
}

.page-news .journal-img img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
  border: 1px solid var(--news-soft-line);
}

.page-news .accordion-panel p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #3D4D5C;
  background: var(--c-light);
  border-left: 3px solid var(--c-teal);
  padding: 0.75rem 0.9rem;
  border-radius: 0 6px 6px 0;
  margin: 0.4rem 0 0;
}

.page-news .journal-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border-top: 1px solid var(--c-light);
  margin-top: 0.9rem;
  padding-top: 0.85rem;
}

.page-news .timeline-expand {
  appearance: none;
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-teal);
  cursor: pointer;
  font-family: var(--font-body);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.page-news .expand-arrow {
  display: inline-block;
  font-size: 1.1rem;
  line-height: 1;
  transition: transform 0.25s var(--ease);
}

.page-news .timeline-expand[aria-expanded="true"] .expand-arrow {
  transform: rotate(180deg);
}

.page-news .card-link {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--c-orange);
  text-decoration: none;
  border-bottom: 2px solid rgba(255, 106, 0, 0.3);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-news .card-link:hover {
  border-bottom-color: var(--c-orange);
  color: var(--c-orange);
}

/* ============ 数据更新周刊 ============ */
.page-news .weekly-brief {
  background: var(--c-deep);
  color: var(--c-pale);
  padding: 3.25rem 0 3.75rem;
  position: relative;
  overflow: hidden;
  border-top: 4px solid var(--c-orange);
  border-bottom: 3px solid var(--c-line);
}

.page-news .weekly-brief::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 48%, rgba(255, 106, 0, 0.07) 49%, rgba(255, 106, 0, 0.07) 51%, transparent 52%),
    linear-gradient(45deg, transparent 48%, rgba(255, 255, 255, 0.035) 49%, rgba(255, 255, 255, 0.035) 51%, transparent 52%);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-news .weekly-brief-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-news .weekly-copy .section-kicker {
  color: var(--c-gold);
}

.page-news .weekly-copy h2 {
  font-family: var(--font-title);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: #ffffff;
  margin: 0 0 0.5rem;
}

.page-news .weekly-lede {
  color: rgba(232, 237, 242, 0.72);
  max-width: 520px;
  margin: 0;
  line-height: 1.6;
  font-size: 0.95rem;
}

.page-news .weekly-points {
  list-style: none;
  padding: 0;
  margin: 1.4rem 0 1.6rem;
  display: grid;
  gap: 0.75rem;
}

.page-news .weekly-points li {
  position: relative;
  padding-left: 1.75rem;
  font-size: 0.94rem;
  line-height: 1.6;
  color: rgba(232, 237, 242, 0.85);
}

.page-news .weekly-points li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--c-orange);
  font-size: 1rem;
}

.page-news .weekly-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  border-top: 1px solid rgba(232, 237, 242, 0.18);
  padding-top: 1.25rem;
}

.page-news .weekly-stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-gold);
  line-height: 1.1;
}

.page-news .weekly-stat-label {
  font-size: 0.78rem;
  color: rgba(232, 237, 242, 0.65);
  display: block;
  margin-top: 0.28rem;
}

.page-news .weekly-img {
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-news .weekly-img img {
  width: clamp(160px, 55vw, 200px);
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--c-gold);
  box-shadow: 0 0 0 8px rgba(255, 209, 102, 0.12), 0 2px 0 3px rgba(0, 0, 26, 0.2);
}

/* ============ 入口变更日志 ============ */
.page-news .changelog {
  background: #ffffff;
  padding: 3.25rem 0 3.75rem;
  border-bottom: 3px solid var(--c-line);
}

.page-news .changelog-visual {
  margin: 0 0 2.25rem;
}

.page-news .changelog-visual img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 3px solid var(--c-line);
  box-shadow: var(--shadow-1);
}

.page-news .changelog-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-news .changelog-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--c-light);
  border-left: 4px solid var(--c-teal);
  padding: 1.2rem;
  border-radius: 4px;
}

.page-news .changelog-version {
  flex-shrink: 0;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--c-teal);
  background: rgba(14, 124, 134, 0.12);
  padding: 0.28rem 0.5rem;
  border-radius: 4px;
  letter-spacing: 0.04em;
}

.page-news .changelog-card h3 {
  font-family: var(--font-title);
  font-size: 1.02rem;
  color: var(--c-deep);
  margin: 0 0 0.28rem;
  line-height: 1.3;
}

.page-news .changelog-time {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--c-orange);
  display: inline-block;
  margin-bottom: 0.25rem;
}

.page-news .changelog-card p {
  font-size: 0.9rem;
  color: #3D4D5C;
  line-height: 1.55;
  margin: 0;
}

/* ============ 专家专栏精选 ============ */
.page-news .expert-picks {
  background: var(--c-ink);
  color: var(--c-pale);
  padding: 3.5rem 0 4.25rem;
  border-top: 4px solid var(--c-orange);
}

.page-news .expert-picks .section-note {
  color: rgba(232, 237, 242, 0.68);
}

.page-news .expert-picks .section-kicker {
  color: var(--c-gold);
}

.page-news .expert-picks .section-head h2 {
  color: #ffffff;
}

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

.page-news .expert-card {
  background: #ffffff;
  border: 3px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-1);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  display: flex;
  flex-direction: column;
}

.page-news .expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.page-news .expert-card-img img {
  width: 100%;
  height: auto;
  display: block;
  border-bottom: 3px solid var(--c-line);
}

.page-news .expert-card-body {
  padding: 1.4rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.page-news .expert-type {
  font-family: var(--font-data);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.65rem;
  align-self: flex-start;
}

.page-news .expert-card-body h3 {
  font-family: var(--font-title);
  font-size: 1.12rem;
  line-height: 1.32;
  color: var(--c-deep);
  margin: 0 0 0.5rem;
}

.page-news .expert-card-body p {
  font-size: 0.91rem;
  line-height: 1.62;
  color: #3D4D5C;
  margin: 0 0 1rem;
}

.page-news .expert-card-featured {
  background: var(--c-deep);
  border-color: var(--c-orange);
  position: relative;
}

.page-news .expert-card-featured .expert-card-body {
  padding: 1.8rem 1.5rem;
}

.page-news .expert-card-featured .expert-card-body h3 {
  color: #ffffff;
  font-size: 1.3rem;
}

.page-news .expert-card-featured .expert-card-body p {
  color: rgba(232, 237, 242, 0.8);
}

.page-news .expert-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1rem;
}

.page-news .expert-tags .tag {
  font-size: 0.75rem;
  border: 1px solid rgba(232, 237, 242, 0.3);
  color: var(--c-pale);
  background: transparent;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-family: var(--font-data);
}

/* ============ ≥ 768px ============ */
@media (min-width: 768px) {
  .page-news .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-news .journal-card-grid {
    grid-template-columns: 108px 1fr;
    gap: 1.25rem;
  }

  .page-news .journal-side {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    border-right: 1px solid var(--c-light);
    padding-right: 1rem;
  }

  .page-news .journal-time {
    margin-top: 0.2rem;
  }

  .page-news .weekly-brief-grid {
    grid-template-columns: 1.65fr 0.8fr;
    align-items: center;
  }

  .page-news .changelog-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  .page-news .changelog-item {
    flex-direction: column;
    gap: 0.85rem;
  }

  .page-news .expert-card-featured .expert-card-body {
    padding: 2rem 2.2rem;
  }
}

/* ============ ≥ 1024px ============ */
@media (min-width: 1024px) {
  .page-news .news-hero {
    padding: 3rem 0 3.5rem;
  }

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

  .page-news .journal-item {
    padding-left: 0;
    display: flex;
    align-items: flex-start;
  }

  .page-news .journal-item:nth-child(odd) {
    justify-content: flex-start;
  }

  .page-news .journal-item:nth-child(even) {
    justify-content: flex-end;
  }

  .page-news .timeline-card {
    width: calc(50% - 62px);
  }

  .page-news .timeline-mark {
    left: 50%;
    top: 34px;
    transform: translateX(-50%);
  }

  .page-news .journal-item:nth-child(odd) .timeline-card::before {
    content: '';
    position: absolute;
    top: 38px;
    left: 100%;
    width: 48px;
    height: 3px;
    background: var(--c-orange);
  }

  .page-news .journal-item:nth-child(even) .timeline-card::before {
    content: '';
    position: absolute;
    top: 38px;
    right: 100%;
    width: 48px;
    height: 3px;
    background: var(--c-orange);
  }

  .page-news .expert-grid {
    grid-template-columns: repeat(12, 1fr);
  }

  .page-news .expert-card:nth-child(1) {
    grid-column: span 5;
  }

  .page-news .expert-card:nth-child(2) {
    grid-column: span 7;
  }

  .page-news .expert-card:nth-child(3) {
    grid-column: span 12;
  }

  .page-news .expert-card-featured .expert-card-body {
    padding: 2.5rem 3rem;
  }

  .page-news .expert-card-featured .expert-card-body h3 {
    font-size: 1.75rem;
    max-width: 76%;
  }

  .page-news .expert-card-featured .expert-card-body p {
    max-width: 72%;
  }

  .page-news .expert-tags {
    position: absolute;
    right: 2.5rem;
    bottom: 2.5rem;
    flex-direction: column;
    align-items: flex-end;
    margin: 0;
  }
}