/* ===== 文章中心 (page-news) 专属样式 ===== */
.page-news {
  --n-title: 'Montserrat', 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
  --n-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --n-orange: #FF6B35;
  --n-blue: #1A73E8;
  --n-gold: #FFD700;
  --n-dark: #1C1C1E;
  --n-light: #F5F5F7;
  --n-white: #FFFFFF;
  --n-text: #333333;
  --n-gray: #8E8E93;
  --n-border: #E0E0E0;
  --n-radius-md: 16px;
  --n-radius-lg: 24px;
  --n-radius-pill: 48px;
  --n-shadow: 0 2px 8px rgba(0,0,0,0.06);
  --n-shadow-hover: 0 12px 32px rgba(0,0,0,0.12);
  --n-trans: 0.35s cubic-bezier(0.4,0,0.2,1);
  --n-gap: 1.5rem;
  --n-cat-brand-bg: rgba(255,215,0,0.18);
  --n-cat-brand-text: #8A7500;
  --n-cat-industry-bg: rgba(26,115,232,0.14);
  --n-cat-industry-text: #0D47A1;
  --n-cat-guide-bg: rgba(255,107,53,0.14);
  --n-cat-guide-text: #B83A00;

  font-family: var(--n-body);
  color: var(--n-text);
  background: var(--n-light);
}

.page-news .page-news-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1.25rem 2.5rem;
}

/* ── 面包屑 ── */
.page-news .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--n-gray);
  margin-bottom: 1rem;
  padding: 0;
}
.page-news .breadcrumbs a {
  color: var(--n-blue);
  text-decoration: none;
  transition: color var(--n-trans);
}
.page-news .breadcrumbs a:hover {
  color: var(--n-orange);
}
.page-news .breadcrumbs-sep {
  color: var(--n-border);
  font-weight: 300;
}
.page-news .breadcrumbs [aria-current="page"] {
  color: var(--n-text);
  font-weight: 500;
}

/* ── 页面标题区 ── */
.page-news .page-header-block {
  margin-bottom: 2rem;
  padding: 0.5rem 0;
}
.page-news .page-headline {
  font-family: var(--n-title);
  font-size: 2.25rem;
  font-weight: 900;
  line-height: 1.1;
  color: var(--n-dark);
  margin: 0 0 0.375rem;
  letter-spacing: -0.02em;
}
.page-news .page-subline {
  font-size: 1rem;
  color: var(--n-gray);
  margin: 0;
  max-width: 34em;
}

/* ── 区块标题 ── */
.page-news .section-label {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 1.25rem;
}
.page-news .label-marker {
  display: block;
  width: 4px;
  height: 1.6rem;
  border-radius: 3px;
  background: var(--n-orange);
  flex-shrink: 0;
}
.page-news .section-heading {
  font-family: var(--n-title);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--n-dark);
  margin: 0;
}

/* ── 精选文章区 ── */
.page-news .featured-zone {
  margin-bottom: 2.5rem;
}
.page-news .featured-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--n-gap);
}
.page-news .featured-card {
  display: flex;
  flex-direction: column;
  background: var(--n-white);
  border-radius: var(--n-radius-md);
  overflow: hidden;
  box-shadow: var(--n-shadow);
  transition: box-shadow var(--n-trans), transform var(--n-trans);
}
.page-news .featured-card:hover {
  box-shadow: var(--n-shadow-hover);
  transform: translateY(-3px);
}
.page-news .featured-media {
  width: 100%;
  overflow: hidden;
  position: relative;
  aspect-ratio: 16 / 10;
}
.page-news .featured-media .featured-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.5s ease;
}
.page-news .featured-card:hover .featured-img {
  transform: scale(1.04);
}
.page-news .featured-body {
  padding: 1.125rem 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}
.page-news .featured-title {
  font-family: var(--n-title);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--n-dark);
  margin: 0;
  line-height: 1.3;
}
.page-news .featured-desc {
  font-size: 0.9375rem;
  color: var(--n-gray);
  margin: 0;
  line-height: 1.6;
  flex: 1;
}
.page-news .link-arrow {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--n-blue);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: color var(--n-trans), gap var(--n-trans);
  margin-top: auto;
  align-self: flex-start;
}
.page-news .link-arrow:hover {
  color: var(--n-orange);
  gap: 0.5rem;
}

/* ── 标签 (tag) ── */
.page-news .tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.7rem;
  border-radius: var(--n-radius-pill);
  line-height: 1.4;
  letter-spacing: 0.02em;
  align-self: flex-start;
}
.page-news .tag-brand {
  background: var(--n-cat-brand-bg);
  color: var(--n-cat-brand-text);
}
.page-news .tag-industry {
  background: var(--n-cat-industry-bg);
  color: var(--n-cat-industry-text);
}
.page-news .tag-guide {
  background: var(--n-cat-guide-bg);
  color: var(--n-cat-guide-text);
}

/* ── 分类筛选区 ── */
.page-news .filter-zone {
  margin-bottom: 2.5rem;
  position: relative;
}
.page-news .filter-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}
.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.page-news .filter-label {
  display: inline-block;
  font-family: var(--n-body);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.45rem 1.1rem;
  border-radius: var(--n-radius-pill);
  background: var(--n-white);
  color: var(--n-gray);
  border: 1.5px solid var(--n-border);
  cursor: pointer;
  transition: all var(--n-trans);
  user-select: none;
}
.page-news .filter-label:hover {
  border-color: var(--n-blue);
  color: var(--n-blue);
  background: rgba(26,115,232,0.04);
}

/* 选中的标签高亮 */
.page-news #filt-all:checked ~ .filter-bar label[for="filt-all"],
.page-news #filt-brand:checked ~ .filter-bar label[for="filt-brand"],
.page-news #filt-industry:checked ~ .filter-bar label[for="filt-industry"],
.page-news #filt-guide:checked ~ .filter-bar label[for="filt-guide"] {
  background: var(--n-orange);
  color: var(--n-white);
  border-color: var(--n-orange);
  box-shadow: 0 4px 12px rgba(255,107,53,0.25);
}

/* ── 文章网格（卡片列表） ── */
.page-news .article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--n-gap);
}

/* 卡片基础 */
.page-news .article-card {
  display: flex;
  flex-direction: column;
  background: var(--n-white);
  border-radius: var(--n-radius-md);
  overflow: hidden;
  box-shadow: var(--n-shadow);
  transition: box-shadow var(--n-trans), transform var(--n-trans);
}
.page-news .article-card:hover {
  box-shadow: var(--n-shadow-hover);
  transform: translateY(-3px);
}
.page-news .card-media {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.page-news .card-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.5s ease;
}
.page-news .article-card:hover .card-media img {
  transform: scale(1.05);
}
.page-news .card-body {
  padding: 0.875rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex: 1;
}
.page-news .card-title {
  font-family: var(--n-title);
  font-size: 1rem;
  font-weight: 700;
  color: var(--n-dark);
  margin: 0;
  line-height: 1.35;
}
.page-news .card-desc {
  font-size: 0.875rem;
  color: var(--n-gray);
  margin: 0;
  line-height: 1.55;
  flex: 1;
}
.page-news .card-body .link-arrow {
  font-size: 0.8125rem;
  margin-top: auto;
  align-self: flex-start;
}

/* ── 分类筛选：显示/隐藏逻辑 ── */
/* 默认全部显示（当没有选中任何筛选时也显示全部） */
.page-news .article-grid .article-card {
  display: flex;
}

/* 品牌动态 */
.page-news #filt-brand:checked ~ .article-grid .article-card:not([data-category="brand"]) {
  display: none;
}
/* 行业观察 */
.page-news #filt-industry:checked ~ .article-grid .article-card:not([data-category="industry"]) {
  display: none;
}
/* 用户指南 */
.page-news #filt-guide:checked ~ .article-grid .article-card:not([data-category="guide"]) {
  display: none;
}

/* ── 订阅号召区 ── */
.page-news .subscribe-zone {
  margin-top: 1rem;
}
.page-news .subscribe-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
  background: linear-gradient(135deg, #1C1C1E 0%, #2A2A2E 100%);
  border-radius: var(--n-radius-lg);
  padding: 2rem 1.5rem;
  position: relative;
  overflow: hidden;
}
.page-news .subscribe-content {
  position: relative;
  z-index: 2;
  width: 100%;
}
.page-news .subscribe-heading {
  font-family: var(--n-title);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--n-white);
  margin: 0 0 0.375rem;
}
.page-news .subscribe-desc {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.7);
  margin: 0 0 1.25rem;
  max-width: 26em;
  line-height: 1.6;
}
.page-news .subscribe-content .btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 0.7rem 1.75rem;
  border-radius: var(--n-radius-pill);
  background: var(--n-orange);
  color: var(--n-white);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--n-trans), transform var(--n-trans);
  border: none;
  cursor: pointer;
}
.page-news .subscribe-content .btn-primary:hover {
  background: #E55A2E;
  transform: scale(1.03);
}

/* 订阅区装饰形状 */
.page-news .subscribe-visual {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}
.page-news .sub-shape {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,107,53,0.12);
  width: 260px;
  height: 260px;
  top: -80px;
  right: -60px;
}
.page-news .sub-shape--small {
  width: 140px;
  height: 140px;
  background: rgba(255,215,0,0.08);
  bottom: -40px;
  left: -30px;
  top: auto;
  right: auto;
}
.page-news .sub-shape--dot {
  width: 50px;
  height: 50px;
  background: rgba(26,115,232,0.10);
  top: 50%;
  right: 18%;
}

/* ===== 响应式 ===== */

/* 平板及以上 (≥ 640px) */
@media screen and (min-width: 640px) {
  .page-news .page-news-inner {
    padding: 1.5rem 1.75rem 3rem;
  }
  .page-news .page-headline {
    font-size: 2.75rem;
  }
  .page-news .page-subline {
    font-size: 1.0625rem;
  }
  .page-news .featured-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news .featured-card.featured-card {
    flex-direction: column;
  }
  .page-news .featured-title {
    font-size: 1.15rem;
  }
  .page-news .article-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news .subscribe-card {
    flex-direction: row;
    align-items: center;
    padding: 2.5rem 2.5rem;
  }
  .page-news .subscribe-content {
    width: auto;
    flex: 1;
  }
  .page-news .subscribe-heading {
    font-size: 1.6rem;
  }
  .page-news .sub-shape {
    width: 320px;
    height: 320px;
    top: -120px;
    right: -80px;
  }
  .page-news .sub-shape--small {
    width: 180px;
    height: 180px;
  }
}

/* 桌面端 (≥ 1024px) */
@media screen and (min-width: 1024px) {
  .page-news .page-news-inner {
    padding: 2rem 2.5rem 4rem;
  }
  .page-news .page-headline {
    font-size: 3.25rem;
  }
  .page-news .page-subline {
    font-size: 1.125rem;
  }
  .page-news .section-heading {
    font-size: 1.65rem;
  }
  .page-news .featured-grid {
    gap: 1.75rem;
  }
  .page-news .featured-body {
    padding: 1.25rem 1.5rem 1.5rem;
  }
  .page-news .featured-title {
    font-size: 1.3rem;
  }
  .page-news .featured-desc {
    font-size: 1rem;
  }
  .page-news .article-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
  }
  .page-news .card-body {
    padding: 1rem 1.125rem 1.125rem;
  }
  .page-news .card-title {
    font-size: 1.05rem;
  }
  .page-news .filter-bar {
    gap: 0.625rem;
  }
  .page-news .filter-label {
    font-size: 0.9rem;
    padding: 0.5rem 1.3rem;
  }
  .page-news .subscribe-card {
    padding: 3rem 3rem;
    gap: 2rem;
  }
  .page-news .subscribe-heading {
    font-size: 1.8rem;
  }
  .page-news .subscribe-desc {
    font-size: 1rem;
  }
  .page-news .sub-shape {
    width: 380px;
    height: 380px;
    top: -150px;
    right: -100px;
  }
  .page-news .sub-shape--small {
    width: 220px;
    height: 220px;
    bottom: -60px;
    left: -50px;
  }
}

/* 大桌面 (≥ 1280px) */
@media screen and (min-width: 1280px) {
  .page-news .page-news-inner {
    padding-left: 3rem;
    padding-right: 3rem;
  }
  .page-news .page-headline {
    font-size: 3.75rem;
  }
}