/* ==========================================================================
   番茄 V2 航线 (fanqiev2.sbs) — 专栏文章、网站地图与合规页面纯 CSS 样式
   ========================================================================== */

.page-hero {
  padding: 48px 0 28px;
  border-bottom: 1px solid var(--border-subtle);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.breadcrumb a:hover {
  color: var(--tomato-bright);
}

.page-title {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 850;
  line-height: 1.25;
  margin-bottom: 14px;
}

.page-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

/* Pure CSS Category Filter Tabs on articles/index.html */
.filter-radio {
  display: none;
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0;
}

.filter-tab {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border-medium);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

#cat-all:checked ~ .filter-tabs label[for="cat-all"],
#cat-review:checked ~ .filter-tabs label[for="cat-review"],
#cat-client:checked ~ .filter-tabs label[for="cat-client"],
#cat-global:checked ~ .filter-tabs label[for="cat-global"] {
  background: linear-gradient(135deg, #e9d5ff, #c4b5fd);
  border-color: transparent;
  color: #160c2e;
}

#cat-review:checked ~ .article-grid .article-card:not([data-cat="review"]),
#cat-client:checked ~ .article-grid .article-card:not([data-cat="client"]),
#cat-global:checked ~ .article-grid .article-card:not([data-cat="global"]) {
  display: none;
}

/* Article Layout */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 32px;
  padding: 40px 0 64px;
  align-items: start;
}

.article-main {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 34px 36px;
  backdrop-filter: blur(12px);
}

.geo-tldr {
  background: rgba(196, 181, 253, 0.09);
  border: 1px solid rgba(196, 181, 253, 0.32);
  border-left: 4px solid var(--tomato-bright);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin-bottom: 26px;
}

.geo-tldr h2 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: #e9d5ff;
}

.geo-tldr p {
  font-size: 0.94rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.toc-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 28px;
}

.toc-box strong {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.toc-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 18px;
}

.toc-list a {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.toc-list a:hover {
  color: var(--tomato-bright);
}

.article-body {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-body h2 {
  font-size: 1.38rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 30px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-body h3 {
  font-size: 1.12rem;
  font-weight: 750;
  color: var(--text-primary);
  margin: 22px 0 10px;
}

.article-body p {
  margin-bottom: 16px;
}

.article-body ul,
.article-body ol {
  margin: 12px 0 18px 22px;
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body a {
  color: var(--tomato-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: #e9d5ff;
}

.inline-cta {
  margin: 28px 0;
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(196, 181, 253, 0.16) 0%, rgba(17, 22, 36, 0.92) 100%);
  border: 1px solid var(--border-accent);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.inline-cta strong {
  display: block;
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.inline-cta span {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* Prev / Next Navigation */
.article-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.article-nav-card {
  display: block;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  text-decoration: none !important;
}

.article-nav-card:hover {
  border-color: var(--border-accent);
}

.article-nav-card span {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.article-nav-card strong {
  font-size: 0.92rem;
  color: var(--text-primary);
}

/* Sidebar */
.article-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px;
  backdrop-filter: blur(12px);
}

.sidebar-widget h3 {
  font-size: 1rem;
  font-weight: 750;
  margin-bottom: 12px;
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-links a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid transparent;
}

.sidebar-links a:hover {
  color: var(--text-primary);
  border-color: var(--border-accent);
}

.related-section {
  padding-bottom: 56px;
}

/* Sitemap & Legal Pages */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  padding: 36px 0 64px;
}

.sitemap-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.sitemap-box h2 {
  font-size: 1.15rem;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.sitemap-box ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sitemap-box a {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.sitemap-box a:hover {
  color: var(--tomato-bright);
}

@media (max-width: 960px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
}

@media (max-width: 767px) {
  .article-main {
    padding: 24px 18px;
  }
  .toc-list,
  .article-nav,
  .sitemap-grid {
    grid-template-columns: 1fr;
  }
}