.page-news {
  --news-radius: 14px;
  --news-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --news-gap: 24px;
  --news-gap-sm: 16px;
  background-color: var(--color-bg);
  color: var(--color-text);
  overflow: hidden;
}

.page-news__sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== 面包屑 ===== */
.page-news__breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  max-width: calc(var(--container-w) - 48px);
  margin: 0 auto;
  padding: 18px 24px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--color-text-dim);
}

.page-news__breadcrumb a {
  color: var(--color-text-dim);
  text-decoration: none;
  transition: color 0.25s var(--news-ease);
}

.page-news__breadcrumb a:hover {
  color: var(--color-blue);
}

/* ===== Hero ===== */
.page-news__hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: calc(var(--container-w) - 48px);
  margin: 0 auto;
  padding: 48px 24px 44px;
  position: relative;
}

.page-news__hero::before {
  content: "";
  position: absolute;
  top: 24px;
  right: -20px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(0, 216, 255, 0.16) 0%, rgba(0, 216, 255, 0) 68%);
  pointer-events: none;
  z-index: 0;
}

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

.page-news__kicker {
  margin-bottom: 16px;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-news__kicker-index {
  color: var(--color-blue);
  font-weight: 700;
}

.page-news__title {
  font-family: var(--font-headline);
  font-size: clamp(30px, 6vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  color: var(--color-text);
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-news__title-accent {
  color: var(--color-blue);
  font-style: italic;
  font-size: 0.36em;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.page-news__title-accent::before {
  content: "";
  width: 40px;
  height: 2px;
  background: var(--color-orange);
  display: inline-block;
}

.page-news__lede {
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text-dim);
  max-width: 520px;
  margin: 0 0 28px;
}

.page-news__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
}

.page-news__hero-meta-item {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-dim);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 6px 12px;
}

.page-news__hero-visual {
  position: relative;
  z-index: 1;
  clip-path: polygon(0 0, 100% 6%, 100% 94%, 4% 100%);
  background: var(--color-bg-card);
  padding: 4px;
  border: 1px solid rgba(0, 216, 255, 0.3);
}

.page-news__hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  clip-path: polygon(0 0, 100% 6%, 100% 94%, 4% 100%);
}

/* ===== 分类标签 ===== */
.page-news__filters {
  position: sticky;
  top: var(--header-height);
  z-index: 30;
  background: rgba(10, 14, 23, 0.94);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.page-news__filters-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  pointer-events: none;
}

.page-news__filters-inner {
  position: relative;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  overflow-x: auto;
  gap: 10px;
  max-width: calc(var(--container-w) - 48px);
  margin: 0 auto;
  padding: 14px 24px;
  scrollbar-width: none;
}

.page-news__filters-inner::-webkit-scrollbar {
  display: none;
}

.page-news__filters-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-dim);
  margin: 0;
  letter-spacing: 0.06em;
  padding-right: 4px;
  flex-shrink: 0;
}

.page-news__filter {
  appearance: none;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-dim);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 2px;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.28s var(--news-ease), background-color 0.28s var(--news-ease), color 0.28s var(--news-ease);
}

.page-news__filter:hover {
  border-color: var(--color-green);
  color: var(--color-text);
}

.page-news__filter.is-active {
  border-color: var(--color-green);
  color: var(--color-green);
  background: rgba(0, 255, 136, 0.08);
}

/* ===== 区块通用 ===== */
.page-news__section-head {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 28px;
  padding-block: 8px;
}

.page-news__section-index {
  color: var(--color-blue);
  font-family: var(--font-mono);
  font-weight: 700;
}

.page-news__section-title {
  font-family: var(--font-headline);
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.12;
  color: var(--color-text);
  margin: 10px 0 0;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

.page-news__section-desc {
  font-size: 14px;
  color: var(--color-text-dim);
  margin: 0;
  line-height: 1.6;
  max-width: 360px;
}

/* ===== 热门推荐 ===== */
.page-news__hot {
  max-width: calc(var(--container-w) - 48px);
  margin: 0 auto;
  padding: 56px 24px 24px;
}

.page-news__hot-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
}

.page-news__hot-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--news-radius);
  overflow: hidden;
  transition: border-color 0.3s var(--news-ease), background-color 0.3s var(--news-ease);
  display: flex;
  flex-direction: column;
}

.page-news__hot-card:hover {
  border-color: rgba(0, 216, 255, 0.55);
  background-color: #182030;
}

.page-news__hot-card--primary {
  background: linear-gradient(140deg, rgba(0, 216, 255, 0.12) 0%, var(--color-bg-card) 42%, var(--color-bg-card) 100%);
  border-color: rgba(0, 216, 255, 0.45);
}

.page-news__hot-card--primary:hover {
  border-color: var(--color-blue);
}

.page-news__hot-media {
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.page-news__hot-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 10;
  transition: transform 0.45s var(--news-ease);
}

.page-news__hot-card:hover .page-news__hot-media img {
  transform: scale(1.04);
}

.page-news__hot-media--side img {
  aspect-ratio: 16 / 8;
}

.page-news__hot-body {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.page-news__hot-title {
  font-family: var(--font-headline);
  font-size: 19px;
  line-height: 1.35;
  margin: 0;
  color: var(--color-text);
}

.page-news__hot-excerpt {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-dim);
  margin: 0;
}

.page-news__inline-link {
  color: var(--color-blue);
  font-size: 13px;
  font-family: var(--font-mono);
  text-decoration: none;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  transition: color 0.25s var(--news-ease);
}

.page-news__inline-link::after {
  content: "→";
  transition: transform 0.25s var(--news-ease);
}

.page-news__inline-link:hover {
  color: var(--color-green);
}

.page-news__inline-link:hover::after {
  transform: translateX(4px);
}

/* ===== 精选文章列表 ===== */
.page-news__list {
  max-width: calc(var(--container-w) - 48px);
  margin: 0 auto;
  padding: 56px 24px 32px;
}

.page-news__articles {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
  align-items: start;
}

.page-news__card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--news-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s var(--news-ease), background-color 0.3s var(--news-ease);
}

.page-news__card:hover {
  border-color: rgba(0, 216, 255, 0.5);
  background-color: #182030;
}

.page-news__card-media {
  overflow: hidden;
  clip-path: polygon(0 0, 100% 4%, 100% 100%, 8% 96%);
}

.page-news__card-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 9;
  transition: transform 0.45s var(--news-ease);
}

.page-news__card:hover .page-news__card-media img {
  transform: scale(1.04);
}

.page-news__card-body {
  padding: 20px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.page-news__card--feature {
  border-color: rgba(0, 216, 255, 0.25);
}

.page-news__card--feature .page-news__card-body {
  padding: 24px;
}

.page-news__card-title {
  font-family: var(--font-headline);
  font-size: 17px;
  line-height: 1.4;
  margin: 0;
  color: var(--color-text);
}

.page-news__card-excerpt {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-dim);
  margin: 0;
}

.page-news__card-footer {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-dim);
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--color-border);
}

/* ===== 标签 ===== */
.page-news__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 2px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text-dim);
}

.page-news__tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.page-news__tag--observe {
  border-color: rgba(255, 176, 0, 0.5);
  color: var(--color-amber);
}

.page-news__tag--guide {
  border-color: rgba(0, 255, 136, 0.5);
  color: var(--color-green);
}

.page-news__tag--version {
  border-color: rgba(0, 216, 255, 0.5);
  color: var(--color-blue);
}

.page-news__tag--story {
  border-color: rgba(255, 92, 56, 0.5);
  color: var(--color-orange);
}

/* ===== 加载更多提示 ===== */
.page-news__loadmore {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  padding: 40px 16px 24px;
}

.page-news__loadmore-line {
  width: 64px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-blue), transparent);
}

.page-news__loadmore p {
  font-size: 14px;
  color: var(--color-text-dim);
  margin: 0;
  max-width: 520px;
  line-height: 1.7;
}

/* ===== 订阅动态 ===== */
.page-news__updates {
  background: var(--color-bg-footer);
  border-top: 1px solid var(--color-border);
  margin-top: 24px;
}

.page-news__updates-inner {
  max-width: calc(var(--container-w) - 48px);
  margin: 0 auto;
  padding: 56px 24px 48px;
}

.page-news__updates-head {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 28px;
  padding-block: 8px;
}

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

.page-news__update-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  align-items: baseline;
}

.page-news__update-index {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-blue);
  line-height: 1.4;
}

.page-news__update-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-news__update-title {
  font-family: var(--font-headline);
  font-size: 16px;
  line-height: 1.4;
  margin: 0;
  color: var(--color-text);
}

.page-news__update-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-dim);
  margin: 0;
}

.page-news__updates-note {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 28px;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--news-radius);
  background: rgba(10, 14, 23, 0.45);
}

.page-news__updates-note img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
}

.page-news__updates-note p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-dim);
  margin: 0;
}

/* ===== 移动端优先：小屏默认 ===== */
@media (min-width: 480px) {
  .page-news__hot-card--side {
    flex-direction: row;
    align-items: stretch;
  }

  .page-news__hot-media--side {
    width: 40%;
    flex-shrink: 0;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 12%);
  }

  .page-news__hot-media--side img {
    height: 100%;
    object-fit: cover;
    aspect-ratio: auto;
  }
}

/* ===== 平板 ===== */
@media (min-width: 768px) {
  .page-news__hero {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 48px;
    padding-top: 64px;
    padding-bottom: 56px;
  }

  .page-news__hero-visual {
    transform: translateY(8px);
  }

  .page-news__section-head,
  .page-news__updates-head {
    flex-direction: row;
    align-items: flex-end;
  }

  .page-news__section-desc {
    text-align: right;
  }

  .page-news__hot-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-news__hot-card--primary {
    grid-row: span 2;
    min-height: 520px;
    justify-content: flex-end;
  }

  .page-news__hot-card--primary .page-news__hot-media {
    order: -1;
    flex: 1;
  }

  .page-news__hot-card--primary .page-news__hot-media img {
    height: 100%;
    aspect-ratio: auto;
  }

  .page-news__hot-card:not(.page-news__hot-card--primary) {
    flex-direction: row;
    align-items: stretch;
  }

  .page-news__hot-card:not(.page-news__hot-card--primary) .page-news__hot-media--side {
    width: 42%;
    flex-shrink: 0;
  }

  .page-news__hot-card:not(.page-news__hot-card--primary) .page-news__hot-media--side img {
    height: 100%;
    object-fit: cover;
    aspect-ratio: auto;
  }

  .page-news__articles {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-news__card--feature {
    grid-column: span 2;
    flex-direction: row;
    align-items: stretch;
  }

  .page-news__card--feature .page-news__card-media {
    width: 50%;
    flex-shrink: 0;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }

  .page-news__card--feature .page-news__card-media img {
    height: 100%;
    aspect-ratio: auto;
  }

  .page-news__card--feature .page-news__card-body {
    width: 50%;
  }

  .page-news__updates-list {
    column-gap: 48px;
  }

  .page-news__update-item {
    grid-template-columns: 56px 1fr;
    padding: 24px 0;
  }
}

/* ===== 桌面 ===== */
@media (min-width: 1024px) {
  .page-news__articles {
    grid-template-columns: repeat(3, 1fr);
    column-gap: 28px;
    row-gap: 28px;
  }

  .page-news__card--feature {
    grid-column: span 2;
  }

  /* 错峰进入：使卡片有明显节奏差异 */
  .page-news__articles .page-news__card:nth-child(4n + 2) {
    transform: translateY(12px);
  }

  .page-news__articles .page-news__card:nth-child(4n + 3) {
    transform: translateY(28px);
  }

  .page-news__articles .page-news__card:nth-child(4n + 4) {
    transform: translateY(40px);
  }

  .page-news__hot-grid {
    grid-template-columns: 1.2fr 0.8fr;
    column-gap: 28px;
  }

  .page-news__updates-inner {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    column-gap: 56px;
  }

  .page-news__updates-head {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 0;
  }

  .page-news__updates-head .page-news__section-desc {
    text-align: left;
  }

  .page-news__updates-list {
    border-top: 1px solid var(--color-border);
    margin-top: 8px;
  }

  .page-news__updates-note {
    grid-column: 1 / -1;
  }
}

/* ===== 宽屏容器微调 ===== */
@media (min-width: 1280px) {
  .page-news__hero,
  .page-news__hot,
  .page-news__list,
  .page-news__updates-inner {
    padding-right: 32px;
    padding-left: 32px;
  }
}

/* ===== 动效降级兼容 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .page-news__articles .page-news__card:nth-child(n) {
    transform: none;
  }
}