/* 文章资讯 — 对齐递航 indexArticle/defaultArticle 版式与动效 */

.articles-hero {
  position: relative;
  padding: 72px 0 40px;
  background: linear-gradient(180deg, #e6efff 0%, #f4f8ff 55%, #ffffff 100%);
  overflow: hidden;
}

.articles-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 20%, rgba(7, 90, 255, 0.12), transparent 45%),
    radial-gradient(circle at 80% 0%, rgba(7, 90, 255, 0.08), transparent 40%);
  pointer-events: none;
}

.articles-hero-inner {
  position: relative;
  z-index: 1;
}

.articles-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}

.articles-main {
  padding: 0 0 80px;
  background: linear-gradient(180deg, #f7faff 0%, #ffffff 160px);
}

.articles-container {
  max-width: 1280px;
}

/* 分类 Tab */
.article-tabs-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 40px;
  width: 100%;
}

.article-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 32px;
  position: relative;
  padding-bottom: 4px;
}

.article-tabs-item {
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 8px 4px 12px;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: color 0.25s ease;
}

.article-tabs-item:hover {
  color: var(--primary);
}

.article-tabs-item.is-active {
  color: var(--primary);
  font-weight: 500;
}

.article-tabs-indicator {
  position: absolute;
  left: 0;
  bottom: 0;
  display: block;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  width: 48px;
  transform: translateX(0);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

/* 列表网格：用 grid 左对齐，避免末行不足 3 张时被 space-between 拉开 */
.article-masonry {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px 24px;
  padding: 0 8px;
}

.article-masonry.is-empty {
  display: flex;
  justify-content: center;
}

.article-card-item {
  min-width: 0;
  opacity: 0;
  transform: translateX(-28px);
  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.article-card-item.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.article-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.article-card-link:hover .article-card-title {
  color: var(--primary);
}

.article-card-tag {
  display: inline-block;
  min-width: 52px;
  padding: 4px 12px;
  margin-bottom: 12px;
  background: var(--primary);
  border-radius: 4px;
  color: #fff;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
}

.article-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s ease;
}

.article-card-time {
  display: block;
  margin-bottom: 14px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.article-card-summary {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-summary h1,
.article-card-summary h2,
.article-card-summary h3,
.article-card-summary p,
.article-card-summary strong {
  font-size: inherit;
  font-weight: 400;
  margin: 0;
  display: inline;
}

/* 分页 */
.article-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 48px;
}

.article-pagination-btn,
.article-pagination-num {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: none;
  border-radius: 4px;
  background: #fff;
  color: var(--text);
  font-size: 0.875rem;
  font-family: var(--font);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
}

.article-pagination-btn:hover:not(:disabled),
.article-pagination-num:hover:not(.is-active) {
  color: var(--primary);
}

.article-pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.article-pagination-num.is-active {
  background: var(--primary);
  color: #fff;
}

.article-pagination-ellipsis {
  padding: 0 6px;
  color: var(--text-muted);
  user-select: none;
}

/* 详情页 */
.article-detail-page {
  padding: calc(var(--header-h) + 24px) 0 80px;
  background: #fff;
}

.article-detail-banner {
  width: 100%;
  max-height: 420px;
  overflow: hidden;
  background: var(--bg-section);
}

.article-detail-banner img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
}

.article-detail-wrap {
  max-width: 720px;
  padding-top: 40px;
  animation: articleDetailIn 0.6s ease both;
}

@keyframes articleDetailIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.article-detail-wrap .back-link {
  margin-bottom: 28px;
}

.article-detail-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.45;
  color: var(--text);
  margin-bottom: 16px;
}

.article-detail-time {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.article-detail-line {
  height: 1px;
  background: #c8c8cc;
  margin-bottom: 32px;
}

.article-detail-rich {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1rem;
}

.article-detail-rich p {
  margin-bottom: 1em;
}

.article-detail-rich h1,
.article-detail-rich h2,
.article-detail-rich h3,
.article-detail-rich h4 {
  color: var(--text);
  margin: 1.5em 0 0.75em;
  font-weight: 600;
  line-height: 1.4;
}

.article-detail-rich img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 24px 0;
}

.article-detail-rich a {
  color: var(--primary);
}

.article-empty {
  width: 100%;
  padding: 64px 24px;
  text-align: center;
  color: var(--text-muted);
}

/* 首页文章卡片（递航首页横向卡片风格） */
.article-grid--home {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card--home {
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  border: none;
  box-shadow: 0 5px 12px rgba(0, 0, 0, 0.09);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease;
  opacity: 0;
  transform: translateY(20px);
}

.article-card--home.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.article-card--home:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 28px rgba(7, 90, 255, 0.12);
}

.article-card--home .article-card-media {
  height: 150px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #d4e4ff 100%);
  overflow: hidden;
}

.article-card--home .article-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-card--home .article-card-body {
  padding: 20px 18px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card--home .article-card-body h3 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: auto;
  padding-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s ease;
}

.article-card--home:hover .article-card-body h3 {
  color: var(--primary);
}

.article-card--home .article-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 12px;
}

.article-card--text .article-card-body {
  padding: 22px 20px 24px;
}

.article-card--text .article-card-body h3 {
  margin-bottom: 0;
  padding-bottom: 8px;
}

.article-card-excerpt {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-detail-page--text .article-detail-wrap {
  padding-top: 8px;
}

.article-detail-rich img {
  display: none !important;
}

@media (max-width: 1024px) {
  .article-masonry {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 640px) {
  .articles-hero {
    padding: 48px 0 28px;
  }

  .article-masonry {
    grid-template-columns: 1fr;
    padding: 0;
  }

  .article-grid--home {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-card-item,
  .article-card--home,
  .article-detail-wrap {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .article-tabs-indicator {
    transition: none;
  }
}