/* ══════════════════════════════════════
   kmmer columns.css（由 main.css 按页面归属拆分生成，勿手工混写）
   重建：_ref/build_css_split.js  归因：_ref/css_split_plan.json
   打印样式见独立文件 css/print.css；lightbox 底栏避让规则在 base.css。
   ══════════════════════════════════════ */
/* ── 专栏插件（ColumnSeries） ── */
.columns-page, .column-detail { max-width: 920px; margin: 0 auto; padding: 8px 0; }
.columns-head { text-align: center; padding: 22px 4px 18px; }
.columns-eyebrow { display: inline-block; font-size: 12px; font-weight: 600; color: var(--accent); background: var(--accent-soft); padding: 3px 10px; border-radius: 20px; letter-spacing: .5px; }
.columns-title { font-size: 26px; font-weight: 800; margin: 12px 0 6px; color: var(--text); }
.columns-sub { font-size: 14px; color: var(--text-secondary); margin: 0; }
.columns-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 8px 2px 20px; }
/* 专栏卡片：横幅式（封面上、信息下） */
.column-card { position: relative; display: flex; flex-direction: column; text-decoration: none; color: inherit; background: var(--glass-bg-strong); border: 1px solid var(--glass-border); border-radius: var(--radius, 12px); box-shadow: var(--shadow-sm, 0 1px 6px rgba(0,0,0,.05)); transition: transform .2s, box-shadow .2s, border-color .2s; overflow: hidden; }
.column-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md, 0 6px 18px rgba(0,0,0,.1)); border-color: var(--accent); }
.column-card-media { position: relative; width: 100%; height: 148px; overflow: hidden; background: var(--accent-soft); }
.column-card-img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .35s ease; }
.column-card:hover .column-card-img { transform: scale(1.04); }
.column-card-fallback { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%); color: #fff; font-size: 52px; font-weight: 800; letter-spacing: .02em; }
.column-card-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 8px; }
.column-card-name { font-size: 17px; font-weight: 700; margin: 0; color: var(--text); }
.column-card-desc { font-size: 13px; color: var(--text-secondary); margin: 0; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.column-card-count { align-self: flex-start; display: inline-flex; align-items: center; gap: 5px; font-size: 12px; color: var(--accent); background: var(--accent-soft); padding: 3px 9px; border-radius: 12px; }
.column-card-count i { font-size: 11px; }
/* 专栏详情 */
.column-detail { padding-top: 6px; }
.column-hero { display: flex; gap: 18px; align-items: center; background: var(--glass-bg-strong); border: 1px solid var(--glass-border); border-left: 4px solid var(--accent); border-radius: var(--radius, 12px); padding: 20px 22px; margin-bottom: 18px; overflow: hidden; box-shadow: var(--shadow-sm, 0 1px 6px rgba(0,0,0,.05)); }
.column-hero-cover { width: 96px; height: 96px; border-radius: 14px; object-fit: cover; border: 2px solid var(--glass-border); flex: 0 0 auto; }
.column-hero-body { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: 8px; }
.column-hero-eyebrow { font-size: 12px; font-weight: 600; color: var(--accent); background: var(--accent-soft); padding: 3px 10px; border-radius: 20px; align-self: flex-start; letter-spacing: .5px; }
.column-hero-name { font-size: 24px; font-weight: 800; margin: 0; color: var(--text); line-height: 1.3; word-break: break-word; }
.column-hero-desc { font-size: 14px; color: var(--text-secondary); margin: 0; line-height: 1.6; word-break: break-word; }
.column-hero-count { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--accent); background: var(--accent-soft); padding: 4px 11px; border-radius: 14px; align-self: flex-start; }
.column-hero-count i { font-size: 12px; }
.column-toc-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; font-size: 15px; font-weight: 700; color: var(--text); margin: 6px 2px 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.column-toc-head i { color: var(--accent); }
.col-post-list { display: flex; flex-direction: column; gap: 12px; }
.col-post-item { display: flex; gap: 14px; align-items: center; text-decoration: none; color: inherit; background: var(--glass-bg-strong); border: 1px solid var(--glass-border); border-radius: var(--radius, 12px); padding: 14px 16px; box-shadow: var(--shadow-sm, 0 1px 6px rgba(0,0,0,.05)); transition: transform .18s, box-shadow .18s, border-color .18s; }
.col-post-item:hover { transform: translateX(2px); box-shadow: var(--shadow-md, 0 6px 18px rgba(0,0,0,.1)); border-color: var(--accent); }
.col-post-index { flex: 0 0 auto; width: 34px; font-size: 18px; font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; text-align: center; }
.col-post-main { flex: 1; min-width: 0; }
.col-post-title { font-size: 16px; font-weight: 700; margin: 0 0 6px; color: var(--text); line-height: 1.4; word-break: break-word; }
.col-post-excerpt { font-size: 13px; color: var(--text-secondary); margin: 0 0 8px; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.col-post-meta { display: flex; gap: 14px; font-size: 12px; color: var(--text-secondary); }
.col-post-meta i { margin-right: 4px; }
.col-post-thumb { flex: 0 0 auto; width: 84px; height: 60px; border-radius: 8px; object-fit: cover; border: 1px solid var(--glass-border); }
.pcb-mark-read { background: var(--border); color: var(--text-secondary); }
.col-post-meta .pcb-mark { margin-left: 0; }
.col-post-item.is-read .col-post-title { color: var(--text-secondary); }
.cth-label { display: inline-flex; align-items: center; gap: 8px; }

/* ── 1.4.0 精选专栏 ─────────────────────────────────────────
   色彩走 H224 基准（--accent / rgba(39,92,234,…)），深色模式自动跟随变量。 */
.column-hero-badges { display: inline-flex; align-items: center; gap: 8px; }

/* 详情页 Hero：右上角折角丝带（1.3.1 起，替代原徽章行内联药丸）。
   .column-hero 已有 overflow:hidden，丝带直角会被圆角自然裁切 */
.column-hero { position: relative; }
.column-hero-ribbon {
  position: absolute;
  top: 0; right: 0;
  width: 58px; height: 58px;
  pointer-events: none;
  z-index: 2;
}
.column-hero-ribbon::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  border-left: 58px solid transparent;
  border-top: 58px solid rgba(39, 92, 234, .95);
}
.column-hero-ribbon > span {
  position: absolute;
  top: 14px; right: 2px;
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .5px;
  transform: rotate(45deg);
}

/* 列表页「精选专栏」置顶区 */
.columns-featured { margin-bottom: 26px; }
.columns-featured-head { margin-bottom: 12px; }
.columns-featured-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
}
.columns-featured-label .fa-star { font-size: 13px; }
.columns-featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

/* 精选卡片：封面左上角「★ 精选」角标（media 区已 position:relative + overflow:hidden） */
.column-card-featured {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  line-height: 16px;
  color: #fff;
  background: rgba(39, 92, 234, .92);
  box-shadow: 0 2px 8px rgba(39, 92, 234, .35);
  pointer-events: none;
}
.column-card-featured .fa-star { font-size: 10px; }
/* 精选卡整卡微强调：描边 + 悬停加深（仅在精选区与全部列表中的精选卡生效） */
.column-card.is-featured { border-color: rgba(39, 92, 234, .45); }
.column-card.is-featured:hover { border-color: var(--accent); }