/* ============================================================
   /articles/ 列表页：让它"醒目"起来
   ------------------------------------------------------------
   原来这个页面只是把首页卡片原样铺一遍：每张卡标题一样大、摘要一样灰、
   没有层次，27 篇扫下来分不清主次。这里在不改动首页的前提下（样式全部
   限定在 #articles-index 内）补三件事：
   1) 页头：大标题 + 篇数/分类/标签数字 + 分类筛选胶囊（可点着跳分类页）
   2) 卡片：标题放大、左侧钢青竖条、分类胶囊换成强调色、悬停抬升 + 描边点亮
   3) 摘要放开到 3 行，信息更足
   配色沿用 sci-fi 皮肤的令牌（--sf-ice / --sf-glass 等），不加新颜色。
   ============================================================ */

/* ---------- 1. 页头 ---------- */
#articles-index .articles-hero {
  position: relative;
  margin: 0 0 18px;
  padding: 26px 28px 20px;
  border-radius: 12px;
  border: 1px solid var(--sf-glass-line, rgba(255, 255, 255, .12));
  background-color: var(--sf-glass, rgba(255, 255, 255, .055));
  background-image: var(--sf-glass-sheen, linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .012) 38%, rgba(255, 255, 255, .012)));
  /* 与全站卡片同一套材质（卡片与文章面板都铺"白膜 + 顶部高光"）：
     少了 backdrop-filter 会变成一块"平板"；少了 background-image，
     在 theme-glass.css 的 `background:` 简写之后又会被洗掉顶部高光。 */
  -webkit-backdrop-filter: blur(var(--sf-glass-blur, 20px));
  backdrop-filter: blur(var(--sf-glass-blur, 20px));
  box-shadow:
    0 24px 60px -38px rgba(0, 0, 0, .95),
    inset 0 1px 0 rgba(255, 255, 255, .16),
    inset 0 -1px 0 rgba(255, 255, 255, .04);
  overflow: hidden;
}

/* 左侧一条钢青竖光，给页头一个视觉锚点 */
#articles-index .articles-hero::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--sf-ice, #9dc0d4), rgba(157, 192, 212, .12));
}

#articles-index .articles-hero__title {
  margin: 0;
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: .06em;
  color: #eaf2f8;
}

#articles-index .articles-hero__desc {
  margin: 8px 0 0;
  font-size: .95rem;
  color: var(--sf-muted, #7c8a95);
}

#articles-index .articles-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 16px;
}

#articles-index .articles-hero__stat {
  display: flex;
  align-items: baseline;
  gap: 6px;
  text-decoration: none !important;
  border: 0 !important;
}

#articles-index .articles-hero__stat b {
  font-family: var(--sf-mono, monospace);
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--sf-ice-2, #cbe2ef);
  letter-spacing: .02em;
}

#articles-index .articles-hero__stat span {
  font-size: .85rem;
  color: var(--sf-muted, #7c8a95);
}

#articles-index .articles-hero__stat:hover b {
  color: #fff;
}

/* ---------- 2. 分类筛选胶囊 ---------- */
#articles-index .articles-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, .08);
}

#articles-index .articles-chip {
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--sf-glass-line, rgba(255, 255, 255, .12));
  background: rgba(255, 255, 255, .04);
  font-family: var(--sf-mono, monospace);
  font-size: .82rem;
  color: var(--sf-muted, #7c8a95);
  text-decoration: none !important;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

#articles-index .articles-chip:hover,
#articles-index .articles-chip.is-active {
  color: #04101a;
  background: var(--sf-ice, #9dc0d4);
  border-color: var(--sf-ice, #9dc0d4);
}

#articles-index .articles-chip.is-active {
  cursor: default;
}

/* ---------- 3. 卡片：放大标题 / 竖条 / 悬停抬升 ---------- */
#articles-index .recent-post-item {
  --art-accent: var(--sf-ice, #9dc0d4);
  position: relative;
  padding-left: 22px !important;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}

/* 左侧竖条：默认很淡，悬停点亮 */
#articles-index .recent-post-item::before {
  content: '';
  display: block !important;
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  height: auto;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, rgba(157, 192, 212, .35), rgba(157, 192, 212, .06));
  transition: background .22s ease, box-shadow .22s ease;
}

#articles-index .recent-post-item:hover {
  transform: translateY(-2px);
}

#articles-index .recent-post-item:hover::before {
  background: linear-gradient(180deg, var(--sf-ice, #9dc0d4), rgba(157, 192, 212, .25));
  box-shadow: 0 0 14px rgba(157, 192, 212, .35);
}

#articles-index .recent-post-item .article-title {
  font-size: 1.18rem !important;
  font-weight: 600;
  letter-spacing: .01em;
}

#articles-index .recent-post-item .article-title a,
#articles-index .recent-post-item .article-title {
  color: #e9f2f8 !important;
}

#articles-index .recent-post-item:hover .article-title,
#articles-index .recent-post-item:hover .article-title a {
  color: var(--sf-ice-2, #cbe2ef) !important;
}

/* 分类做成强调色胶囊，别再和日期一样灰 */
#articles-index .recent-post-item .article-meta__categories {
  padding: 1px 9px 2px;
  border-radius: 999px;
  background: rgba(157, 192, 212, .12);
  color: var(--sf-ice-2, #cbe2ef) !important;
  font-size: .8rem !important;
}

#articles-index .recent-post-item .article-meta__categories i {
  display: none;   /* 胶囊里不必再放 inbox 图标 */
}

#articles-index .recent-post-item .article-meta-label,
#articles-index .recent-post-item .article-meta-separator {
  opacity: .55;
}

/* 摘要放开到 3 行，信息更足 */
#articles-index .recent-post-item .content {
  -webkit-line-clamp: 3;
  line-clamp: 3;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: #9fb0bd !important;
}

/* ---------- 4. 序号徽章（系列第几篇） ---------- */
#articles-index .recent-post-info {
  position: relative;
}

#articles-index .article-index-badge {
  display: inline-block;
  margin-bottom: 6px;
  padding: 1px 8px 2px;
  border-radius: 6px;
  border: 1px solid rgba(157, 192, 212, .28);
  background: rgba(157, 192, 212, .10);
  font-family: var(--sf-mono, monospace);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--sf-ice, #9dc0d4);
}

#articles-index .recent-post-item:hover .article-index-badge {
  background: var(--sf-ice, #9dc0d4);
  border-color: var(--sf-ice, #9dc0d4);
  color: #04101a;
}

/* ---------- 小屏：收一收页头 ---------- */
@media (max-width: 768px) {
  #articles-index .articles-hero {
    padding: 20px 18px 16px;
  }
  #articles-index .articles-hero__title {
    font-size: 1.6rem;
  }
  #articles-index .articles-hero__stats {
    gap: 16px;
  }
  #articles-index .recent-post-item {
    padding-left: 16px !important;
  }
}