/* === 15-extras.css (原 user.css L6011-L6743,Section 19+20+21 Markdown 表格 + 代码沙盒卡 + 思维导图卡) === */

/* === Section 19 Markdown 表格窄屏横滑适配 P241 (原 L6011-L6049) === */

/* ===========================================================
   Section 19 · Markdown 表格窄屏横滑适配（P241）
   ===========================================================
   PC 下 .md-table-scroll 仅是透明包装，不改变布局；
   窄屏下才启用 overflow-x + 单元格 nowrap，根治中文逐字竖排。
*/
.md-table-scroll { width: 100%; }

@media (max-width: 768px) {
  .md-table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .md-table-scroll::-webkit-scrollbar { height: 4px; }
  .md-table-scroll::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 2px;
  }
  .md-table-scroll::-webkit-scrollbar-track { background: transparent; }

  /* 表格本身：保持 <table> 原布局，仅收紧间距 */
  .msg-ai-content .md-table-scroll > table {
    margin: 16px 0 8px;
    width: max-content;
    min-width: 100%;
    font-size: 13px;
  }
  .msg-ai-content .md-table-scroll th,
  .msg-ai-content .md-table-scroll td {
    padding: 10px 12px;
    white-space: nowrap;
  }
}


/* === Section 20 代码沙盒执行详情卡片 sandbox-card.js P243 (原 L6050-L6218) === */

/* ============================================================
   Section 20 · 代码沙盒执行详情卡片(sandbox-card.js, P243)
   在过程记录里点"查看代码与运行记录"展开,显示注入数据/代码/输出/产物。
   ============================================================ */

.sb-panel-host {
  margin: 4px 0 8px;
  padding: 0;
}

.sb-panel {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.sb-panel.sb-failed {
  border-color: var(--error-border);
  background: var(--error-bg);
}

.sb-section { display: flex; flex-direction: column; gap: 6px; }

.sb-section-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-light);
}
.sb-section-label { flex: 0 0 auto; }
.sb-count {
  color: var(--text-dim);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}

/* 注入的数据(context_files) */
.sb-ctx-list { display: flex; flex-direction: column; gap: 6px; }
.sb-ctx-row {
  background: var(--bg-subtle);
  border-left: 2px solid var(--info-color);
  padding: 6px 10px;
  border-radius: 4px;
  display: grid;
  grid-template-columns: 1fr auto;
  column-gap: 10px;
  row-gap: 2px;
}
.sb-ctx-name { font-family: var(--font-mono); font-size: 12px; color: var(--text-main); }
.sb-ctx-size { font-size: 11px; color: var(--text-dim); }
.sb-ctx-hint { grid-column: 1 / -1; font-size: 11px; color: var(--text-dim); }

/* 代码块 */
.sb-code {
  background: var(--bg-subtle);
  border-radius: 6px;
  padding: 10px 12px;
  margin: 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-main);
  max-height: 360px;
  overflow-y: auto;
}
.sb-code code { font-family: inherit; white-space: pre; }

/* 输出 */
.sb-out-label {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 2px;
}
.sb-out {
  background: var(--bg-subtle);
  border-radius: 4px;
  padding: 8px 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 240px;
  overflow-y: auto;
}
.sb-out-stdout { color: var(--text-main); }
.sb-out-stderr { color: var(--warning-color); }
.sb-out-error { color: var(--error-text); }

/* 产物 */
.sb-img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
}
.sb-img {
  width: 100%;
  border-radius: 6px;
  cursor: zoom-in;
  border: 1px solid var(--border-light);
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

.sb-file-list { display: flex; flex-direction: column; gap: 4px; }
.sb-file {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: var(--bg-subtle);
  border-radius: 6px;
  text-decoration: none;
  color: var(--text-main);
  border: 1px solid var(--border-light);
  transition: background 0.12s;
}
.sb-file:hover { background: var(--bg-hover); }
.sb-file-ext {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0.05em;
  min-width: 40px;
  text-align: center;
}
.sb-file-name { flex: 1; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sb-file-size { font-size: 11px; color: var(--text-dim); }

@media (max-width: 768px) {
  .sb-panel { padding: 10px; font-size: 12px; }
  .sb-code, .sb-out { font-size: 11px; }
  .sb-img-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
}


/* === Section 21 思维导图卡片 mindmap-card P257 (原 L6219-L6743) === */

/* ========================================
   Section 21 · 思维导图卡片(mindmap-card, P257)
   ======================================== */
.mindmap-card {
  max-width: 420px;
  margin: var(--space-3) 0;
  padding: var(--space-4);
  background:
    linear-gradient(135deg, var(--brand-bg-subtle) 0%, transparent 60%),
    var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transit-normal), box-shadow var(--transit-normal);
}
.mindmap-card:hover {
  border-color: var(--brand-border);
  /* P413 扁平化:hover 阴影从 2 层(重影 + 金描边)→ 单层柔影 token */
  box-shadow: var(--shadow-ambient);
}
/* 左上角一道极细品牌金光线,替代老 box-shadow 的重压感 */
.mindmap-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 60%; height: 1px;
  background: linear-gradient(90deg, var(--brand-primary) 0%, transparent 100%);
  opacity: 0.5;
  pointer-events: none;
}

/* 头部:图标 + 标题/副文 + 节点数徽章 */
.mindmap-card-head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  position: relative;
}
.mindmap-card-icon {
  flex-shrink: 0;
  color: var(--brand-primary);
  opacity: 0.95;
}
.mindmap-card-title-wrap {
  flex: 1;
  min-width: 0;
}
.mindmap-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: 0.01em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
}
.mindmap-card-sub {
  margin-top: 2px;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.mindmap-card-count {
  flex-shrink: 0;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 500;
  color: var(--brand-primary);
  background: var(--brand-bg-subtle);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
}

/* 分支预览:小胶囊,低饱和度,更有呼吸感 */
.mindmap-card-branches {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  margin-top: var(--space-3);
  position: relative;
}
.mindmap-card-branch {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  transition: color var(--transit-fast), border-color var(--transit-fast);
}
.mindmap-card:hover .mindmap-card-branch {
  color: var(--text-main);
  border-color: var(--brand-border);
}
.mindmap-card-more {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 11px;
  color: var(--text-dim);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* 按钮:描边风,hover 填充。覆盖全局 .msg-ai-content a 的金色 color + 下划线动画 */
.mindmap-card-actions {
  margin-top: var(--space-4);
  position: relative;
}
.msg-ai-content .mindmap-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--brand-primary);
  background: transparent;
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  padding-bottom: 7px;  /* 对冲全局 .msg-ai-content a 的 padding-bottom: 2px */
  transition: color var(--transit-fast), background var(--transit-fast),
              border-color var(--transit-fast), transform 0.1s ease;
}
.msg-ai-content .mindmap-card-btn:hover {
  color: var(--text-on-color);
  background: var(--brand-primary);
  border-color: var(--brand-primary);
}
.msg-ai-content .mindmap-card-btn:active {
  transform: translateY(1px);
}
.msg-ai-content .mindmap-card-btn svg {
  transition: transform var(--transit-fast);
}
.msg-ai-content .mindmap-card-btn:hover svg {
  transform: translateX(2px);
}
/* 禁掉全局 .msg-ai-content a::after 的下划线动画 */
.msg-ai-content .mindmap-card-btn::after { display: none; }

@media (max-width: 768px) {
  .mindmap-card { max-width: 100%; padding: var(--space-3); }
  .mindmap-card-title { font-size: 14px; }
  .mindmap-card-sub { display: none; }
}

/* ========================================
   Section 22 · 站点资源卡片(site-card, T145 4b / P556)
   沿用 Section 21 mindmap-card 的令牌语言,克制档:无预览分支,两个入口按钮。
   ======================================== */
.site-card {
  max-width: 420px;
  margin: var(--space-3) 0;
  padding: var(--space-4);
  background:
    linear-gradient(135deg, var(--brand-bg-subtle) 0%, transparent 60%),
    var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transit-normal), box-shadow var(--transit-normal);
}
.site-card:hover {
  border-color: var(--brand-border);
  box-shadow: var(--shadow-ambient);
}
.site-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 60%; height: 1px;
  background: linear-gradient(90deg, var(--brand-primary) 0%, transparent 100%);
  opacity: 0.5;
  pointer-events: none;
}
.site-card-head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  position: relative;
}
.site-card-icon {
  flex-shrink: 0;
  color: var(--brand-primary);
  opacity: 0.95;
}
.site-card-title-wrap { flex: 1; min-width: 0; }
.site-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: 0.01em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
}
.site-card-sub {
  margin-top: 2px;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
/* 轻量样式提示条:明暗 chip + 品牌色块,改样式后对话卡片即可见 */
.site-card-style {
  margin-top: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.site-card-mode {
  font-size: 11px;
  color: var(--text-dim);
  padding: 1px 8px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
}
.site-card-swatch {
  width: 16px;
  height: 16px;
  border-radius: 5px;
  border: 1px solid var(--border-light);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}
.site-card-actions {
  margin-top: var(--space-4);
  position: relative;
  display: flex;
  gap: var(--space-2);
}
.msg-ai-content .site-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px 7px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--brand-primary);
  background: transparent;
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: color var(--transit-fast), background var(--transit-fast),
              border-color var(--transit-fast), transform 0.1s ease;
}
.msg-ai-content .site-card-btn:hover {
  color: var(--text-on-color);
  background: var(--brand-primary);
  border-color: var(--brand-primary);
}
.msg-ai-content .site-card-btn:active { transform: translateY(1px); }
.msg-ai-content .site-card-btn svg { transition: transform var(--transit-fast); }
.msg-ai-content .site-card-btn:hover svg { transform: translateX(2px); }
.msg-ai-content .site-card-btn::after { display: none; }
/* 次按钮(预览):更轻,中性描边,hover 仅提色不填充 */
.msg-ai-content .site-card-btn.is-secondary {
  color: var(--text-muted);
  border-color: var(--border-light);
}
.msg-ai-content .site-card-btn.is-secondary:hover {
  color: var(--text-main);
  background: transparent;
  border-color: var(--brand-border);
}
@media (max-width: 768px) {
  .site-card { max-width: 100%; padding: var(--space-3); }
  .site-card-title { font-size: 14px; }
  .site-card-sub { display: none; }
}

/* ═════════════════════════════════════════════════════════════
   Section 22 · P258 存量迁移向导(migration-wizard.js,一次性工具)
   所有用户迁完后本段 CSS 和 JS 一起删除,DB 字段留存
   ═════════════════════════════════════════════════════════════ */
.migration-wizard-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-4);
}
body.migration-wizard-open { overflow: hidden; }

.mw-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  width: 100%; max-width: 680px;
  max-height: 90vh;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-ambient);
}

.mw-header {
  padding: var(--space-5) var(--space-5) var(--space-3);
  border-bottom: 1px solid var(--border-glass);
}
.mw-title {
  font-size: 17px; font-weight: 600;
  color: var(--text-main);
  letter-spacing: 0.5px;
}
.mw-subtitle {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.mw-bulk {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-glass);
  flex-wrap: wrap;
}
.mw-bulk-label {
  font-size: 12px;
  color: var(--text-tertiary);
}
.mw-bulk select {
  flex: 1; min-width: 140px;
  padding: 6px 10px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: 13px;
}

.mw-list {
  flex: 1; overflow-y: auto;
  padding: var(--space-3) var(--space-5);
}
.mw-item {
  padding: var(--space-3);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  background: var(--bg-card);
}
.mw-item-head {
  display: flex; align-items: center; gap: var(--space-2);
  margin-bottom: 4px;
}
.mw-badge {
  font-size: 11px; font-weight: 500;
  padding: 2px 8px;
  border-radius: 10px;
  flex-shrink: 0;
}
.mw-badge-task {
  background: rgba(100, 150, 255, 0.15);
  color: #7aa6e3;
}
.mw-badge-kb {
  background: rgba(150, 200, 100, 0.15);
  color: #9ec96a;
}
.mw-item-name {
  font-size: 14px; font-weight: 500;
  color: var(--text-main);
  flex: 1;
}
.mw-file-count {
  font-size: 11px;
  color: var(--text-tertiary);
}
.mw-item-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-left: 0;
  margin-bottom: var(--space-2);
  line-height: 1.5;
}
.mw-item-select {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: 13px;
}

.mw-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--border-glass);
  background: var(--bg-glass);
}
.mw-count {
  font-size: 12px;
  color: var(--text-tertiary);
}
.mw-btn {
  padding: 8px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500;
  cursor: pointer;
  transition: var(--transit-fast);
}
.mw-btn-primary {
  background: var(--bg-cta-primary);
  color: var(--text-on-color);
}
.mw-btn-primary:hover:not(:disabled) { filter: brightness(1.1); }
.mw-btn-primary:disabled {
  opacity: 0.5; cursor: not-allowed;
}
.mw-btn-secondary {
  background: transparent;
  border-color: var(--border-light);
  color: var(--text-main);
}
.mw-btn-secondary:hover { background: var(--bg-glass); }

@media (max-width: 640px) {
  .mw-panel { max-height: 100vh; border-radius: 0; }
  .mw-bulk { flex-direction: column; align-items: stretch; }
  .mw-bulk-label { margin-bottom: 4px; }
}

/* ═════════════════════════════════════════════════════════════
   Section 23 · 知识库文件查看器(P258 KB 下载/查看)
   ═════════════════════════════════════════════════════════════ */
.file-viewer-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.65);
  z-index: 10000;
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-4);
  animation: fv-fade-in 0.15s ease-out;
}
.file-viewer-overlay.fv-closing { animation: fv-fade-out 0.15s ease-out forwards; }
body.fv-open { overflow: hidden; }

@keyframes fv-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes fv-fade-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

.file-viewer {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  width: 100%; max-width: 760px;
  max-height: 85vh;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-ambient);
  animation: fv-scale-in 0.18s cubic-bezier(0.2, 0.9, 0.3, 1.1);
}
@keyframes fv-scale-in {
  from { opacity: 0; transform: scale(0.94) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.fv-header {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-glass);
  flex-shrink: 0;
}
.fv-title-wrap {
  display: flex; align-items: center; gap: var(--space-3);
  flex: 1; min-width: 0;
}
.fv-icon {
  width: 36px; height: 36px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  color: var(--brand-primary);
  background: var(--bg-glass); border-radius: 10px;
}
.fv-icon svg { width: 20px; height: 20px; }
.fv-title-meta { flex: 1; min-width: 0; }
.fv-title {
  font-size: 15px; font-weight: 500;
  color: var(--text-main);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.fv-sub {
  font-size: 12px; color: var(--text-tertiary);
  margin-top: 2px;
}

.fv-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-main);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  flex-shrink: 0;
}
.fv-btn svg { width: 14px; height: 14px; }
.fv-btn:hover {
  background: var(--bg-glass);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}
.fv-btn-download span { font-size: 13px; }

.fv-close {
  width: 32px; height: 32px; border-radius: 8px;
  border: none; background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.15s;
  flex-shrink: 0;
}
.fv-close svg { width: 18px; height: 18px; }
.fv-close:hover { background: var(--bg-glass); color: var(--text-main); }

.fv-body {
  flex: 1;
  overflow: auto;
  padding: var(--space-4) var(--space-5);
  min-height: 200px;
}
.fv-loading, .fv-empty, .fv-error {
  padding: var(--space-6) 0;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 14px;
}
.fv-error { color: #e66; }

.fv-content {
  margin: 0;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 13px; line-height: 1.7;
  color: var(--text-main);
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--bg-glass);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
}

@media (max-width: 640px) {
  .file-viewer-overlay { padding: 0; }
  .file-viewer {
    max-height: 100vh; height: 100vh;
    border-radius: 0; border: none;
  }
  .fv-header { padding: var(--space-3) var(--space-4); }
  .fv-body { padding: var(--space-3) var(--space-4); }
  .fv-btn span { display: none; }  /* 窄屏下载按钮只留图标 */
  .fv-btn { padding: 7px 10px; }
  .fv-title { font-size: 14px; }
  .fv-content { font-size: 12px; padding: var(--space-3); }
}

/* ═════════════════════════════════════════════════════════════
   Section 24 · 骨架屏加载占位(.sk-* 替换"加载中..."文本,P266)

   原则:结构对齐真实内容避免跳变 / shimmer 极淡克制 / 色系走 75 变量
   用法:把 innerHTML='...加载中...' 改为对应骨架结构,数据到位后正常替换
   ═════════════════════════════════════════════════════════════ */

@keyframes sk-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.sk {
  background: linear-gradient(
    90deg,
    var(--border-light) 0%,
    var(--bg-active) 50%,
    var(--border-light) 100%
  );
  background-size: 200% 100%;
  animation: sk-shimmer 1.6s linear infinite;
  border-radius: var(--radius-sm);
  display: block;
}

.sk-text      { height: var(--space-3); border-radius: var(--space-1); }
.sk-text-sm   { height: 10px;           border-radius: var(--space-1); }
.sk-text-lg   { height: 18px;           border-radius: var(--space-1); }
.sk-w-20      { width: 20%; }
.sk-w-40      { width: 40%; }
.sk-w-60      { width: 60%; }
.sk-w-80      { width: 80%; }
.sk-w-100     { width: 100%; }

.sk-avatar    { width: var(--space-8); height: var(--space-8); border-radius: var(--radius-full); flex-shrink: 0; }
.sk-avatar-sm { width: 22px; height: 22px; border-radius: var(--radius-full); flex-shrink: 0; }

.sk-pill {
  height: 28px; width: 140px;
  border-radius: var(--radius-full);
  display: inline-block;
}

/* 结构组合:行 / 列 / 堆栈 / 网格 */
.sk-row { display: flex; gap: var(--space-3); align-items: center; padding: var(--space-3); }
.sk-col { display: flex; flex-direction: column; gap: var(--space-2); flex: 1; min-width: 0; }
.sk-stack { display: flex; flex-direction: column; gap: var(--space-3); padding: var(--space-3); }
.sk-grid {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-3);
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

/* 消息区骨架(对齐 .msg-ai 结构:头像 + 抬头 + 正文两行) */
.sk-msg {
  display: flex; gap: var(--space-3);
  padding: var(--space-4);
  max-width: 760px; margin: 0 auto;
}
.sk-msg .sk-col { gap: var(--space-2); }

/* 卡片骨架(对齐助手仓库 / 知识库卡片结构) */
.sk-card {
  padding: var(--space-4);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  display: flex; flex-direction: column; gap: var(--space-3);
}

/* 列表项骨架(右栏面板 skill / KB 列表单行) */
.sk-list-item {
  display: flex; gap: var(--space-3); align-items: center;
  padding: var(--space-2) var(--space-3);
}