/* ========== page-news 专属样式 ========== */
.page-news {
  --n-breadcrumb-font: var(--font-body);
  --n-hero-radius: var(--radius);
  --n-card-radius: var(--radius);
  --n-transition: var(--transition);
  --n-shadow: var(--shadow);
  --n-shadow-hover: var(--shadow-hover);
  --n-tag-updates-bg: var(--c-primary-red);
  --n-tag-guides-bg: var(--c-primary-blue);
  --n-tag-data-bg: var(--c-accent-gold);
  --n-filter-active-bg: var(--c-primary-red);
  --n-filter-active-color: var(--c-text-light);
  --n-filter-inactive-bg: var(--c-bg-light);
  --n-filter-inactive-color: var(--c-text-primary);
  --n-hero-overlay: linear-gradient(135deg, rgba(26,26,46,0.72) 0%, rgba(230,57,70,0.35) 100%);

  padding-bottom: 3rem;
  background: var(--c-bg-light);
}

/* 面包屑 */
.page-news__breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.25rem 0;
  font-family: var(--n-breadcrumb-font);
  font-size: 0.85rem;
  color: var(--c-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.page-news__breadcrumb a {
  color: var(--c-primary-blue);
  text-decoration: none;
  transition: color var(--n-transition);
}
.page-news__breadcrumb a:hover,
.page-news__breadcrumb a:focus-visible {
  color: var(--c-primary-red);
  text-decoration: underline;
}
.page-news__breadcrumb-sep {
  color: var(--c-text-secondary);
  user-select: none;
}
.page-news__breadcrumb [aria-current="page"] {
  color: var(--c-text-primary);
  font-weight: 600;
}

/* 首屏 Hero */
.news-hero {
  position: relative;
  max-width: 1200px;
  margin: 1rem auto 1.5rem;
  border-radius: var(--n-hero-radius);
  overflow: hidden;
  box-shadow: var(--n-shadow);
  background: var(--c-bg-dark);
}
.news-hero__image-wrapper {
  position: relative;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 600;
  overflow: hidden;
}
.news-hero__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}
.news-hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--n-hero-overlay);
  pointer-events: none;
}
.news-hero__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 1.25rem 1.8rem;
  color: var(--c-text-light);
  z-index: 2;
}
.news-hero__tag {
  display: inline-block;
  font-family: var(--font-heading-bold);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: var(--c-primary-red);
  color: #fff;
  margin-bottom: 0.6rem;
}
.news-hero__title {
  font-family: var(--font-heading-bold);
  font-size: 1.8rem;
  line-height: 1.15;
  margin: 0 0 0.5rem;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,0.25);
}
.news-hero__summary {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.55;
  max-width: 680px;
  margin: 0 0 1rem;
  opacity: 0.92;
}
.news-hero__link {
  display: inline-block;
}
.news-hero__link.button {
  background: var(--c-primary-red);
  color: #fff;
  border: none;
  padding: 0.6rem 1.6rem;
  font-size: 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  transition: transform var(--n-transition), box-shadow var(--n-transition);
  text-decoration: none;
  font-weight: 600;
}
.news-hero__link.button:hover,
.news-hero__link.button:focus-visible {
  transform: scale(1.04);
  box-shadow: 0 6px 20px rgba(230,57,70,0.4);
}

/* 过滤器 */
.news-filter {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}
.news-filter__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}
.news-filter__labels {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  justify-content: center;
}
.news-filter__label {
  display: inline-block;
  padding: 0.45rem 1.2rem;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--n-filter-inactive-bg);
  color: var(--n-filter-inactive-color);
  cursor: pointer;
  transition: background var(--n-transition), color var(--n-transition), transform var(--n-transition);
  user-select: none;
  border: 1px solid var(--c-border);
}
.news-filter__label:hover {
  transform: scale(1.04);
  border-color: var(--c-primary-red);
}

/* 选中状态 */
#filter-all:checked ~ .news-filter__labels label[for="filter-all"],
#filter-updates:checked ~ .news-filter__labels label[for="filter-updates"],
#filter-guides:checked ~ .news-filter__labels label[for="filter-guides"],
#filter-data:checked ~ .news-filter__labels label[for="filter-data"] {
  background: var(--n-filter-active-bg);
  color: var(--n-filter-active-color);
  border-color: var(--n-filter-active-bg);
}

/* 卡片网格 */
.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

/* 卡片默认全部显示 */
.news-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: var(--n-card-radius);
  box-shadow: var(--n-shadow);
  overflow: hidden;
  transition: transform var(--n-transition), box-shadow var(--n-transition);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--n-shadow-hover);
}

/* 过滤器控制显示/隐藏 */
#filter-updates:checked ~ .news-grid .news-card:not([data-category="updates"]),
#filter-guides:checked ~ .news-grid .news-card:not([data-category="guides"]),
#filter-data:checked ~ .news-grid .news-card:not([data-category="data"]) {
  display: none;
}
#filter-all:checked ~ .news-grid .news-card {
  display: flex;
}

/* 卡片图片 */
.news-card__image-wrap {
  width: 100%;
  aspect-ratio: 350 / 200;
  overflow: hidden;
  background: var(--c-bg-dark);
}
.news-card__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--n-transition);
}
.news-card:hover .news-card__image {
  transform: scale(1.04);
}

/* 卡片内容 */
.news-card__body {
  padding: 1rem 1.1rem 1.2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-card__tag {
  display: inline-block;
  font-family: var(--font-heading-bold);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  color: #fff;
  margin-bottom: 0.5rem;
  align-self: flex-start;
}
.news-card__tag--updates { background: var(--n-tag-updates-bg); }
.news-card__tag--guides { background: var(--n-tag-guides-bg); }
.news-card__tag--data { background: var(--n-tag-data-bg); color: var(--c-text-primary); }

.news-card__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  line-height: 1.3;
  margin: 0 0 0.4rem;
  color: var(--c-text-primary);
}
.news-card__summary {
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--c-text-secondary);
  margin: 0 0 0.6rem;
  flex: 1;
}

/* 手风琴展开 */
.news-card__expand {
  margin-top: auto;
  position: relative;
}
.news-card__toggle {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}
.news-card__more {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-primary-red);
  cursor: pointer;
  transition: color var(--n-transition);
  border-bottom: 1px dashed var(--c-primary-red);
  padding-bottom: 1px;
}
.news-card__more:hover,
.news-card__more:focus-visible {
  color: var(--c-primary-blue);
  border-bottom-color: var(--c-primary-blue);
}
.news-card__detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s;
  opacity: 0;
}
.news-card__toggle:checked ~ .news-card__detail {
  max-height: 350px;
  opacity: 1;
  padding-top: 0.6rem;
}
.news-card__toggle:checked ~ .news-card__more {
  display: none;
}
.news-card__detail p {
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--c-text-primary);
  margin: 0;
}
.news-card__detail a {
  color: var(--c-primary-red);
  text-decoration: underline;
  font-weight: 500;
  transition: color var(--n-transition);
}
.news-card__detail a:hover {
  color: var(--c-primary-blue);
}

/* 动画支持 */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275), transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ===== 桌面端媒体查询 ===== */
@media (min-width: 768px) {
  .page-news__breadcrumb {
    padding: 1.25rem 2rem 0;
    font-size: 0.9rem;
  }

  /* Hero 桌面增强 */
  .news-hero {
    margin: 1.5rem auto 2rem;
    min-height: 420px;
  }
  .news-hero__content {
    padding: 2.5rem 3rem;
  }
  .news-hero__tag {
    font-size: 0.85rem;
    padding: 0.3rem 1rem;
  }
  .news-hero__title {
    font-size: 2.8rem;
    max-width: 720px;
  }
  .news-hero__summary {
    font-size: 1.05rem;
    max-width: 580px;
  }

  /* 过滤器 */
  .news-filter {
    padding: 0 2rem;
  }
  .news-filter__labels {
    gap: 0.75rem;
    margin-bottom: 2rem;
  }
  .news-filter__label {
    font-size: 0.9rem;
    padding: 0.5rem 1.6rem;
  }

  /* 卡片网格 2 列 */
  .news-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

@media (min-width: 1024px) {
  /* 卡片网格 3 列 */
  .news-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.75rem;
  }

  .news-hero__title {
    font-size: 3.2rem;
    max-width: 800px;
  }
  .news-hero__summary {
    font-size: 1.1rem;
  }

  .news-card__title {
    font-size: 1.25rem;
  }
}

/* 大桌面端内容宽度锁定 */
@media (min-width: 1240px) {
  .news-hero,
  .news-filter {
    width: 100%;
    max-width: 1200px;
  }
}

/* 确保首屏图片在窄屏不溢出 */
@media (max-width: 479px) {
  .news-hero__image-wrapper {
    aspect-ratio: 4 / 3;
  }
  .news-hero__title {
    font-size: 1.4rem;
  }
  .news-hero__summary {
    font-size: 0.85rem;
    -webkit-line-clamp: 3;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-card__title {
    font-size: 1rem;
  }
}