.page-news {
  --news-rail-w: 3rem;
  --news-gap: 1.5rem;
  --news-radius: var(--radius);
  --news-top-offset: calc(var(--header-top) + var(--header-h));
  background: transparent;
  overflow: clip;
  padding-top: calc(var(--news-top-offset) + 1.25rem);
}

/* ===== 面包屑 ===== */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  max-width: var(--container);
  margin: 0 auto calc(var(--news-gap) * 0.6);
  padding-inline: var(--gutter);
  font-size: 0.875rem;
  color: var(--text-muted);
}
.page-news .breadcrumb__link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}
.page-news .breadcrumb__link:hover {
  color: var(--gold);
}
.page-news .breadcrumb__current {
  color: var(--text-muted);
}
.page-news .breadcrumb__item:not(:last-child)::after {
  content: "/";
  margin-left: 0.75rem;
  color: var(--text-muted);
  opacity: 0.5;
}

/* ===== 首屏框景 ===== */
.page-news__hero {
  max-width: var(--container);
  margin: 0 auto 2.75rem;
  padding-inline: var(--gutter);
}
.page-news__hero-frame {
  position: relative;
  overflow: hidden;
  min-height: min(34rem, 74vh);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  box-shadow: var(--shadow-float);
}
.page-news__hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-news__hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(190deg, rgba(10, 10, 10, 0.16) 0%, rgba(10, 10, 10, 0.08) 42%, rgba(10, 10, 10, 0.84) 100%);
}
.page-news__hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: inherit;
  padding: clamp(1.5rem, 5vw, 4rem);
}
.page-news__hero-content .section-label {
  color: var(--gold);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.page-news__hero-content h1 {
  max-width: 17ch;
  margin: 0 0 1rem;
  font-size: var(--font-display);
  font-weight: 700;
  line-height: var(--line-tight);
  letter-spacing: -0.03em;
  color: var(--text-primary);
  text-wrap: balance;
}
.page-news__hero-lead {
  max-width: 58ch;
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--font-body);
  line-height: var(--line-body);
}
.page-news .frame-corner {
  position: absolute;
  z-index: 3;
  width: 42px;
  height: 42px;
  pointer-events: none;
  opacity: 0.95;
}
.page-news .frame-corner--tr {
  top: 1.25rem;
  right: 1.25rem;
  border-top: 2px solid var(--gold);
  border-right: 2px solid var(--gold);
}
.page-news .frame-corner--bl {
  left: 1.25rem;
  bottom: 1.25rem;
  border-left: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
}

/* ===== 最新发布 ===== */
.page-news__latest {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) 2.25rem;
}
.page-news__section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.page-news__section-head h2 {
  margin: 0;
  font-size: var(--font-subhead);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.page-news__latest-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-news__latest-card {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--divider);
  border-top: 2px solid var(--gold);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-float);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.page-news__latest-card:hover {
  transform: translateY(-3px);
  border-color: rgba(212, 175, 55, 0.5);
  box-shadow: var(--shadow-gold);
}
.page-news__latest-body {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
  padding: clamp(1.1rem, 3vw, 1.75rem);
}
.page-news__latest-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.page-news__rel-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.page-news__card-title {
  margin: 0;
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  font-weight: 700;
  line-height: var(--line-tight);
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.page-news__latest-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: var(--line-body);
}
.page-news__feature-media {
  aspect-ratio: 16 / 9;
  width: 100%;
  overflow: hidden;
}
.page-news__feature-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-news__small-media {
  aspect-ratio: 16 / 10;
  width: 100%;
  overflow: hidden;
}
.page-news__small-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-news__iso-mark {
  display: grid;
  place-items: center;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.16), rgba(10, 10, 10, 0.24) 58%), var(--surface);
  border-bottom: 1px solid var(--divider);
  color: var(--gold);
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}
.page-news__quicks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--divider);
}
.page-news__quicks a {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.95rem;
  border: 1px solid var(--divider);
  border-radius: var(--radius-pill);
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition), background var(--transition), transform var(--transition);
}
.page-news__quicks a:hover {
  border-color: rgba(212, 175, 55, 0.55);
  color: var(--text-primary);
  background: rgba(212, 175, 55, 0.08);
  transform: translateY(-2px);
}

/* ===== 分类筛选 ===== */
.page-news__filter-section {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) 3.25rem;
}
.page-news__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}
.page-news__filter {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.45rem 0.7rem;
  margin-bottom: 2.25rem;
  background: rgba(10, 10, 10, 0.86);
  border: 1px solid var(--divider);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-float);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  scrollbar-width: none;
}
.page-news__filter::-webkit-scrollbar {
  display: none;
}
.page-news__filter-btn {
  flex: 0 0 auto;
  padding: 0.5rem 1.05rem;
  border: 1px solid var(--divider);
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.4;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.page-news__filter-btn:hover {
  border-color: rgba(212, 175, 55, 0.5);
  color: var(--text-primary);
}
.page-news__filter-btn:active {
  transform: scale(0.96);
}

/* ===== 筛选状态：按钮激活 ===== */
.page-news #cat-all:checked ~ .page-news__filter .page-news__filter-btn[for="cat-all"],
.page-news #cat-version:checked ~ .page-news__filter .page-news__filter-btn[for="cat-version"],
.page-news #cat-feature:checked ~ .page-news__filter .page-news__filter-btn[for="cat-feature"],
.page-news #cat-industry:checked ~ .page-news__filter .page-news__filter-btn[for="cat-industry"],
.page-news #cat-brand:checked ~ .page-news__filter .page-news__filter-btn[for="cat-brand"] {
  background: var(--gold);
  border-color: var(--gold);
  color: #0a0a0a;
  font-weight: 700;
  box-shadow: var(--shadow-gold);
}
.page-news .page-news__radio:focus-visible ~ .page-news__filter .page-news__filter-btn[for="cat-all"],
.page-news .page-news__radio:focus-visible ~ .page-news__filter .page-news__filter-btn[for="cat-version"],
.page-news .page-news__radio:focus-visible ~ .page-news__filter .page-news__filter-btn[for="cat-feature"],
.page-news .page-news__radio:focus-visible ~ .page-news__filter .page-news__filter-btn[for="cat-industry"],
.page-news .page-news__radio:focus-visible ~ .page-news__filter .page-news__filter-btn[for="cat-brand"] {
  outline: 2px solid var(--gold-light);
  outline-offset: 2px;
}

/* ===== 时间线 ===== */
.page-news__timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-news__timeline::before {
  content: "";
  position: absolute;
  left: calc((var(--news-rail-w) - 2px) / 2);
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(212, 175, 55, 0.35) 45%, var(--divider));
  border-radius: 999px;
}
.page-news__item {
  position: relative;
  display: flex;
  gap: var(--news-gap);
  list-style: none;
  padding: 0 0 2rem;
}
.page-news__item-rail {
  flex: 0 0 var(--news-rail-w);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding-top: 1.35rem;
}
.page-news__item-dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.14), 0 0 0 9px rgba(212, 175, 55, 0.05);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.page-news__item-time {
  max-height: 6rem;
  font-size: 0.74rem;
  line-height: 1.3;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  writing-mode: vertical-rl;
  user-select: none;
}
.page-news__item-card {
  position: relative;
  flex: 1;
  min-width: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 3vw, 1.75rem);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.page-news__item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}
.page-news__item-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.08rem, 1.8vw, 1.35rem);
  font-weight: 700;
  line-height: var(--line-tight);
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
.page-news__item-card > p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: var(--line-body);
}
.page-news__item-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-top: 1rem;
  border: 1px solid var(--divider);
  border-radius: calc(var(--radius) - 6px);
}

/* ===== 详情展开 ===== */
.page-news__details {
  margin-top: 1.1rem;
  border-top: 1px dashed var(--divider);
  padding-top: 0.6rem;
}
.page-news__details summary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  cursor: pointer;
  color: var(--gold);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.page-news__details summary::-webkit-details-marker {
  display: none;
}
.page-news__details summary::after {
  content: "＋";
  font-size: 0.75rem;
  transition: transform var(--transition);
}
.page-news__details[open] summary::after {
  transform: rotate(45deg);
}
.page-news__details-body {
  margin-top: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.925rem;
  line-height: var(--line-body);
}
.page-news__details-body p {
  margin: 0;
}
.page-news__details-body a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 175, 55, 0.35);
  transition: border-color var(--transition), color var(--transition);
}
.page-news__details-body a:hover {
  color: var(--gold-light);
  border-bottom-color: var(--gold-light);
}

/* ===== 筛选状态：内容过滤 ===== */
.page-news .page-news__radio:checked ~ .page-news__timeline .page-news__item {
  display: none;
}
.page-news #cat-all:checked ~ .page-news__timeline .page-news__item,
.page-news #cat-version:checked ~ .page-news__timeline .page-news__item[data-category="version"],
.page-news #cat-feature:checked ~ .page-news__timeline .page-news__item[data-category="feature"],
.page-news #cat-industry:checked ~ .page-news__timeline .page-news__item[data-category="industry"],
.page-news #cat-brand:checked ~ .page-news__timeline .page-news__item[data-category="brand"] {
  display: flex;
}

/* ===== 悬浮与焦点 ===== */
@media (hover: hover) {
  .page-news__item:hover .page-news__item-dot,
  .page-news__item:focus-within .page-news__item-dot {
    transform: scale(1.2);
    border-color: var(--gold-light);
    box-shadow: 0 0 0 8px rgba(212, 175, 55, 0.14), 0 0 0 12px rgba(212, 175, 55, 0.05);
  }
  .page-news__item:hover .page-news__item-card,
  .page-news__item:focus-within .page-news__item-card {
    border-color: rgba(212, 175, 55, 0.5);
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
  }
}
.page-news__item:focus-visible {
  outline: none;
}
.page-news__item:focus-visible .page-news__item-card {
  border-color: var(--gold);
  box-shadow: var(--shadow-gold);
  outline: 2px solid rgba(212, 175, 55, 0.45);
  outline-offset: 3px;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 680px) {
  .page-news__latest-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news__latest-card--feature {
    grid-column: 1 / -1;
  }
  .page-news__latest-card--feature .page-news__feature-media {
    aspect-ratio: 21 / 9;
  }
}

@media (min-width: 768px) {
  .page-news__filter {
    position: sticky;
    top: calc(var(--header-top) + var(--header-h) + 0.65rem);
    z-index: 12;
  }
}

@media (min-width: 1024px) {
  .page-news__hero-frame {
    min-height: min(36rem, 78vh);
  }
  .page-news__hero-content {
    padding: clamp(2rem, 6vw, 5rem);
  }
  .page-news__latest-grid {
    grid-template-columns: 1.35fr 0.85fr 0.85fr;
    align-items: stretch;
  }
  .page-news__latest-card--feature {
    grid-column: auto;
  }
  .page-news__latest-card--feature .page-news__feature-media {
    aspect-ratio: 16 / 9;
  }
  .page-news__item-card {
    padding: clamp(1.35rem, 2.5vw, 1.8rem);
  }
  .page-news__timeline::before {
    left: calc((var(--news-rail-w) - 2px) / 2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}