/* ===== 页面专属：.page-news (内容专栏) ===== */
.page-news {
  --news-green: #00A86B;
  --news-blue: #0066FF;
  --news-red: #FF3333;
  --news-gold: #FFD700;
  --news-dark: #000000;
  --news-white: #FFFFFF;
  --news-gray: #333333;
  --news-midgray: #666666;
  --news-lightgray: #CCCCCC;
  --news-font-heading: 'Inter','Helvetica Neue',sans-serif;
  --news-font-body: 'Noto Sans SC','Helvetica Neue',Arial,sans-serif;
  --news-font-mono: 'JetBrains Mono','Courier New',monospace;
  --news-transition: 0.3s ease;
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

/* ===== HERO ===== */
.page-news .news-hero {
  position: relative;
  width: 100%;
  height: auto;
  min-height: 320px;
  background-color: var(--news-dark);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem 1rem 2.5rem;
  margin-bottom: 0;
  overflow: hidden;
}
.page-news .news-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.55;
}
.page-news .news-hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}
.page-news .news-breadcrumb {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--news-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--news-lightgray);
  margin-bottom: 1.2rem;
}
.page-news .news-breadcrumb__link {
  color: var(--news-gold);
  text-decoration: none;
  transition: color var(--news-transition);
}
.page-news .news-breadcrumb__link:hover {
  color: var(--news-white);
  text-decoration: underline;
}
.page-news .news-breadcrumb__sep {
  color: var(--news-midgray);
}
.page-news .news-breadcrumb__current {
  color: var(--news-white);
  font-weight: 500;
}
.page-news .news-hero__title {
  position: relative;
  z-index: 1;
  font-family: var(--news-font-heading);
  font-weight: 800;
  font-size: 2.4rem;
  line-height: 1.1;
  text-transform: uppercase;
  color: var(--news-white);
  margin: 0 0 0.4rem;
  letter-spacing: -0.02em;
}
.page-news .news-hero__lead {
  position: relative;
  z-index: 1;
  font-family: var(--news-font-body);
  font-size: 0.95rem;
  color: var(--news-lightgray);
  margin: 0;
  max-width: 28rem;
  line-height: 1.5;
}

/* ===== 主布局 ===== */
.page-news .news-layout {
  display: flex;
  flex-direction: column;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem 2rem;
  gap: 2rem;
}

/* 左侧索引条（移动端隐藏，桌面侧栏） */
.page-news .news-index {
  display: none;
}
.page-news .news-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.page-news .news-index__item {
  font-family: var(--news-font-mono);
  font-size: 0.8rem;
}
.page-news .news-index__link {
  text-decoration: none;
  color: var(--news-midgray);
  padding: 0.3rem 0.6rem;
  border-left: 2px solid transparent;
  transition: all var(--news-transition);
  display: block;
}
.page-news .news-index__link:hover {
  color: var(--news-green);
  border-left-color: var(--news-green);
  background: rgba(0,168,107,0.06);
}

/* 右侧内容区 */
.page-news .news-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* ===== 分类索引（窄章节） ===== */
.page-news .news-categories {
  border: 2px solid var(--news-lightgray);
  padding: 1.2rem 1rem 1.4rem;
  background: var(--news-white);
  position: relative;
}
.page-news .news-categories::before {
  content: "■ 01";
  position: absolute;
  top: -0.6rem;
  left: 1rem;
  background: var(--news-white);
  padding: 0 0.4rem;
  font-family: var(--news-font-mono);
  font-size: 0.7rem;
  color: var(--news-midgray);
  letter-spacing: 0.06em;
}
.page-news .news-categories__title {
  font-family: var(--news-font-heading);
  font-weight: 800;
  font-size: 1rem;
  text-transform: uppercase;
  color: var(--news-dark);
  margin: 0 0 1rem;
  letter-spacing: 0.04em;
}
.page-news .news-categories__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.page-news .news-categories__radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}
.page-news .news-categories__labels {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  width: 100%;
}
.page-news .news-categories__label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  font-family: var(--news-font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  border: 2px solid var(--news-lightgray);
  background: var(--news-white);
  color: var(--news-gray);
  cursor: pointer;
  transition: all var(--news-transition);
  user-select: none;
}
.page-news .news-categories__label:hover {
  border-color: var(--news-midgray);
  background: #f5f5f5;
}
.page-news .news-categories__icon {
  width: 20px;
  height: 20px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
  border-radius: 2px;
}

/* 分类标签色彩 */
.page-news .news-categories__label--round { border-color: var(--news-green); color: var(--news-green); }
.page-news .news-categories__label--feature { border-color: var(--news-blue); color: var(--news-blue); }
.page-news .news-categories__label--data { border-color: var(--news-red); color: var(--news-red); }
.page-news .news-categories__label--guide { border-color: var(--news-gold); color: #b8860b; }
.page-news .news-categories__label--all { border-color: var(--news-dark); color: var(--news-dark); }

/* radio 选中高亮 */
.page-news #cat-all:checked ~ .news-categories__labels .news-categories__label--all,
.page-news #cat-round:checked ~ .news-categories__labels .news-categories__label--round,
.page-news #cat-feature:checked ~ .news-categories__labels .news-categories__label--feature,
.page-news #cat-data:checked ~ .news-categories__labels .news-categories__label--data,
.page-news #cat-guide:checked ~ .news-categories__labels .news-categories__label--guide {
  background: var(--news-dark);
  color: var(--news-white);
  border-color: var(--news-dark);
}

/* ===== 筛选逻辑：文章显示控制 ===== */
.page-news .news-articles__list .news-card {
  display: block;
}
.page-news #cat-round:checked ~ .news-articles .news-articles__list .news-card:not([data-categories~="round"]),
.page-news #cat-feature:checked ~ .news-articles .news-articles__list .news-card:not([data-categories~="feature"]),
.page-news #cat-data:checked ~ .news-articles .news-articles__list .news-card:not([data-categories~="data"]),
.page-news #cat-guide:checked ~ .news-articles .news-articles__list .news-card:not([data-categories~="guide"]) {
  display: none;
}

/* ===== 最新文章（宽章节） ===== */
.page-news .news-articles {
  position: relative;
  padding-top: 0.5rem;
}
.page-news .news-articles::before {
  content: "■ 02";
  position: absolute;
  top: -0.2rem;
  left: 0;
  font-family: var(--news-font-mono);
  font-size: 0.7rem;
  color: var(--news-midgray);
  letter-spacing: 0.06em;
}
.page-news .news-articles__title {
  font-family: var(--news-font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  text-transform: uppercase;
  color: var(--news-dark);
  margin: 0 0 1.2rem;
  letter-spacing: 0.02em;
}
.page-news .news-articles__list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ===== 文章卡片 ===== */
.page-news .news-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--news-lightgray);
  background: var(--news-white);
  position: relative;
  transition: box-shadow var(--news-transition);
  overflow: hidden;
}
.page-news .news-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
/* 斜线装饰 */
.page-news .news-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, transparent 50%, var(--news-lightgray) 50%);
  pointer-events: none;
  z-index: 1;
}
.page-news .news-card__img-wrap {
  width: 100%;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--news-lightgray);
}
.page-news .news-card__img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.page-news .news-card:hover .news-card__img {
  transform: scale(1.02);
}
.page-news .news-card__body {
  padding: 1rem 1.2rem 1.2rem;
  position: relative;
}
.page-news .news-card__number {
  position: absolute;
  top: 0.4rem;
  right: 0.8rem;
  font-family: var(--news-font-mono);
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--news-lightgray);
  line-height: 1;
  pointer-events: none;
  z-index: 2;
}
.page-news .news-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.5rem;
}
.page-news .news-card__tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-family: var(--news-font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  border: 1px solid;
  border-radius: 2px;
}
.page-news .news-card__tag--round { border-color: var(--news-green); color: var(--news-green); }
.page-news .news-card__tag--feature { border-color: var(--news-blue); color: var(--news-blue); }
.page-news .news-card__tag--data { border-color: var(--news-red); color: var(--news-red); }
.page-news .news-card__tag--guide { border-color: var(--news-gold); color: #b8860b; }
.page-news .news-card__title {
  font-family: var(--news-font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--news-dark);
  margin: 0 0 0.3rem;
  line-height: 1.3;
}
.page-news .news-card__detail {
  margin-top: 0.3rem;
  font-family: var(--news-font-body);
  font-size: 0.88rem;
  color: var(--news-gray);
  line-height: 1.6;
}
.page-news .news-card__summary {
  cursor: pointer;
  color: var(--news-midgray);
  font-weight: 400;
  padding: 0.2rem 0;
  list-style: none;
  transition: color var(--news-transition);
}
.page-news .news-card__summary::-webkit-details-marker { display: none; }
.page-news .news-card__summary::before {
  content: "▶ ";
  font-family: var(--news-font-mono);
  font-size: 0.7rem;
  color: var(--news-green);
  display: inline-block;
  transition: transform 0.2s;
}
.page-news .news-card__detail[open] .news-card__summary::before {
  transform: rotate(90deg);
}
.page-news .news-card__summary:hover {
  color: var(--news-dark);
}
.page-news .news-card__full {
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px dashed var(--news-lightgray);
}
.page-news .news-card__full p {
  margin: 0 0 0.4rem;
}
.page-news .news-card__link {
  color: var(--news-blue);
  text-decoration: underline;
  font-weight: 500;
  transition: color var(--news-transition);
}
.page-news .news-card__link:hover {
  color: var(--news-green);
}

/* ===== 推荐文章（窄章节） ===== */
.page-news .news-featured {
  position: relative;
  padding-top: 0.5rem;
  border-top: 2px solid var(--news-dark);
  margin-top: 0.5rem;
}
.page-news .news-featured::before {
  content: "■ 03";
  position: absolute;
  top: -0.6rem;
  left: 0;
  background: var(--news-white);
  padding-right: 0.5rem;
  font-family: var(--news-font-mono);
  font-size: 0.7rem;
  color: var(--news-midgray);
  letter-spacing: 0.06em;
}
.page-news .news-featured__title {
  font-family: var(--news-font-heading);
  font-weight: 800;
  font-size: 1.2rem;
  text-transform: uppercase;
  color: var(--news-dark);
  margin: 0 0 1rem;
  letter-spacing: 0.02em;
}
.page-news .news-featured__grid {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.page-news .news-featured__card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--news-lightgray);
  background: var(--news-white);
  transition: box-shadow var(--news-transition);
}
.page-news .news-featured__card:hover {
  box-shadow: 0 3px 16px rgba(0,0,0,0.07);
}
.page-news .news-featured__img-wrap {
  width: 100%;
  overflow: hidden;
  background: var(--news-lightgray);
}
.page-news .news-featured__img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.page-news .news-featured__card:hover .news-featured__img {
  transform: scale(1.02);
}
.page-news .news-featured__body {
  padding: 0.8rem 1rem 1rem;
  position: relative;
}
.page-news .news-featured__number {
  position: absolute;
  top: 0.3rem;
  right: 0.7rem;
  font-size: 1.4rem;
  color: var(--news-gold);
  line-height: 1;
  pointer-events: none;
}
.page-news .news-featured__title {
  font-family: var(--news-font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--news-dark);
  margin: 0 0 0.25rem;
  line-height: 1.3;
}
.page-news .news-featured__desc {
  font-family: var(--news-font-body);
  font-size: 0.82rem;
  color: var(--news-midgray);
  margin: 0 0 0.5rem;
  line-height: 1.5;
}
.page-news .news-featured__link {
  display: inline-block;
  font-family: var(--news-font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--news-green);
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: all var(--news-transition);
}
.page-news .news-featured__link:hover {
  color: var(--news-dark);
  border-bottom-color: var(--news-dark);
}

/* ===== 返回顶部 ===== */
.page-news .arrow-up {
  position: fixed;
  bottom: 1.2rem;
  right: 1.2rem;
  width: 40px;
  height: 40px;
  border: 2px solid var(--news-dark);
  background: var(--news-white);
  color: var(--news-dark);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--news-transition);
  font-family: var(--news-font-mono);
}
.page-news .arrow-up:hover {
  background: var(--news-dark);
  color: var(--news-white);
}

/* ===== 桌面端媒体查询 ≥768px ===== */
@media (min-width: 768px) {
  .page-news .news-hero {
    min-height: 380px;
    padding: 3rem 2rem 3.5rem;
  }
  .page-news .news-hero__title {
    font-size: 3.2rem;
  }
  .page-news .news-hero__lead {
    font-size: 1.05rem;
  }

  .page-news .news-layout {
    flex-direction: row;
    padding: 0 2rem 3rem;
    gap: 2.5rem;
  }

  /* 左侧索引条（桌面显示） */
  .page-news .news-index {
    display: block;
    width: 130px;
    flex-shrink: 0;
    position: sticky;
    top: calc(var(--header-height, 64px) + 1rem);
    align-self: start;
    padding-top: 1rem;
  }
  .page-news .news-index__list {
    gap: 0.4rem;
  }
  .page-news .news-index__link {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
  }

  .page-news .news-content {
    gap: 3rem;
  }

  .page-news .news-categories {
    padding: 1.4rem 1.5rem 1.6rem;
  }
  .page-news .news-categories__title {
    font-size: 1.05rem;
  }
  .page-news .news-categories__labels {
    gap: 0.8rem;
  }
  .page-news .news-categories__label {
    font-size: 0.8rem;
    padding: 0.45rem 1.1rem;
  }
  .page-news .news-categories__icon {
    width: 24px;
    height: 24px;
  }

  .page-news .news-articles__title {
    font-size: 1.6rem;
  }
  .page-news .news-articles__list {
    gap: 1.8rem;
  }

  .page-news .news-card {
    flex-direction: row;
  }
  .page-news .news-card__img-wrap {
    width: 240px;
    flex-shrink: 0;
  }
  .page-news .news-card__img {
    aspect-ratio: 4 / 3;
    height: 100%;
  }
  .page-news .news-card__body {
    flex: 1;
    padding: 1.2rem 1.5rem;
  }
  .page-news .news-card__number {
    font-size: 2.2rem;
    top: 0.6rem;
    right: 1rem;
  }
  .page-news .news-card__title {
    font-size: 1.1rem;
  }

  .page-news .news-featured__grid {
    flex-direction: row;
    gap: 1.5rem;
  }
  .page-news .news-featured__card {
    flex: 1;
    flex-direction: column;
  }
  .page-news .news-featured__img-wrap {
    width: 100%;
  }
  .page-news .news-featured__body {
    padding: 1rem 1.2rem 1.2rem;
  }
  .page-news .news-featured__title {
    font-size: 1rem;
  }
  .page-news .news-featured__desc {
    font-size: 0.85rem;
  }
}

/* ===== 大桌面端 ≥1024px ===== */
@media (min-width: 1024px) {
  .page-news .news-hero__title {
    font-size: 4rem;
  }
  .page-news .news-hero__lead {
    font-size: 1.15rem;
    max-width: 34rem;
  }
  .page-news .news-index {
    width: 160px;
  }
  .page-news .news-index__link {
    font-size: 0.8rem;
    padding: 0.3rem 0.6rem;
  }
  .page-news .news-card__img-wrap {
    width: 280px;
  }
  .page-news .news-featured__grid {
    gap: 2rem;
  }
}

/* ===== 超宽屏 ≥1280px ===== */
@media (min-width: 1280px) {
  .page-news .news-layout {
    padding-left: 0;
    padding-right: 0;
  }
}