/* =============================================
   文章库 - AI 工作台（复用参考页 UI，限定在 .alib-wb 内）
   ============================================= */
.alib-wb {
  display: none;
  flex-direction: column;
  height: calc(100vh - var(--topbar-height));
  overflow: hidden;
  background: var(--bg-primary);
  --bg-secondary: #0d1117;
  --bg-sidebar: var(--bg-card);
  --bg-card-hover: #1c2333;
  --bg-input: #161b22;
  --border-color: rgba(51, 65, 85, 0.4);
  --border-light: rgba(51, 65, 85, 0.55);
  --border-focus: rgba(16, 185, 129, 0.3);
  --text-primary: var(--text-title);
  --text-secondary: var(--text-body);
  --text-ghost: #475569;
  --accent-green: var(--accent-emerald);
  --accent-green-dark: #059669;
  --accent-green-glow: rgba(16, 185, 129, 0.2);
  --accent-green-soft: rgba(16, 185, 129, 0.08);
  --accent-blue: #3b82f6;
  --accent-blue-light: #60a5fa;
  --accent-cyan: #22d3ee;
  --accent-orange: #f97316;
  --danger: #ef4444;
  --danger-soft: rgba(239, 68, 68, 0.08);
  --warning: #f59e0b;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.alib-wb.is-open { display: flex; }

.alib-wb {
  .topbar-title { 
    font-size: 20px; 
    font-weight: 700; 
    letter-spacing: -0.3px;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .topbar-sub { font-size: 12px; color: var(--text-muted); margin-top: 3px; }
  /* GEO 评分弹窗 */
  .geo-modal {
    position: fixed; inset: 0;
    background: rgba(8,12,20,0.72);
    display: none; align-items: center; justify-content: center;
    z-index: 160; backdrop-filter: blur(8px);
    padding: 24px;
  }
  .geo-modal.on { display: flex !important; }
  .geo-modal-card {
    width: 560px; max-width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: flex; flex-direction: column;
    overflow: hidden;
  }
  .geo-modal-head {
    display: flex; align-items: flex-start; justify-content: space-between;
    padding: 18px 20px 12px;
    border-bottom: 1px solid var(--border-color);
  }
  .geo-modal-title { font-size: 16px; font-weight: 700; letter-spacing: -0.2px; }
  .geo-modal-sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
  .geo-modal-x {
    background: none; border: none; color: var(--text-muted);
    width: 28px; height: 28px; border-radius: var(--radius-md);
    cursor: pointer; font-size: 18px; line-height: 1;
    display: flex; align-items: center; justify-content: center;
  }
  .geo-modal-x:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
  .geo-modal-body { padding: 16px 20px 8px; }
  .geo-modal-body textarea {
    width: 100%; min-height: 220px;
    padding: 12px 14px; border-radius: var(--radius-lg);
    border: 1px solid var(--border-color); background: var(--bg-input);
    color: var(--text-primary); font-size: 13px; line-height: 1.7;
    outline: none; resize: vertical; font-family: inherit;
  }
  .geo-modal-body textarea:focus {
    border-color: var(--accent-green);
    box-shadow: 0 0 0 3px rgba(16,185,129,0.08);
    background: var(--bg-elevated);
  }
  .geo-modal-body textarea::placeholder { color: var(--text-muted); }
  .geo-modal-result {
    display: none;
    margin: 0 20px 4px;
    padding: 12px 14px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(16,185,129,0.18);
    background: linear-gradient(135deg, rgba(16,185,129,0.08), rgba(59,130,246,0.04));
  }
  .geo-modal-result.on { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
  .geo-modal-score { font-size: 22px; font-weight: 700; color: var(--accent-green); }
  .geo-modal-score-label { font-size: 11px; color: var(--text-muted); }
  .geo-modal-hint { font-size: 12px; color: var(--text-secondary); line-height: 1.5; }
  .geo-modal-foot {
    display: flex; justify-content: flex-end; gap: 10px;
    padding: 14px 20px 18px;
  }
  #optimize-modal { z-index: 200; pointer-events: auto; }
  @keyframes geo-spin { to { transform: rotate(360deg); } }
  .geo-spinner {
    width: 36px; height: 36px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-green);
    border-radius: 50%;
    animation: alib-wb-spin 0.8s linear infinite;
  }
  .geo-score-loading {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 14px; padding: 56px 24px;
  }
  .geo-score-loading-text {
    font-size: 14px; font-weight: 600; color: var(--text-primary);
  }
  .geo-score-loading-sub {
    font-size: 12px; color: var(--text-muted);
  }
  .geo-score-result { display: none; padding: 16px 20px 8px; }
  .geo-score-result.on { display: block; }
  .geo-score-cards {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
  }
  .geo-score-card {
    position: relative;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px 14px 14px;
    overflow: hidden;
    min-height: 92px;
  }
  .geo-score-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--card-accent, var(--accent-green));
  }
  .geo-score-card-name {
    font-size: 12px; font-weight: 600; color: var(--text-secondary);
    margin-bottom: 8px;
  }
  .geo-score-card-num {
    font-size: 28px; font-weight: 700; line-height: 1;
    letter-spacing: -0.5px;
    color: var(--card-accent, var(--accent-green));
  }
  .geo-score-card-unit {
    font-size: 11px; color: var(--text-muted); margin-top: 4px;
  }
  .wb-geo-score {
    display: none;
    margin-left: 4px;
    padding: 1px 8px;
    border-radius: 999px;
    background: #10b981;
    color: #fff;
    font-size: 13px;
    font-weight: 800;
    line-height: 1.5;
    letter-spacing: 0.2px;
  }
  .wb-geo-score.on { display: inline-flex; }
  /* ===== 按钮系统全面优化 ===== */
  .btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 9px 18px;
    border-radius: var(--radius-lg);
    font-size: 13px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    font-family: inherit;
    font-weight: 500;
    position: relative;
    overflow: hidden;
  }

  .btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-fast);
  }

  .btn:hover::after { opacity: 1; }

  .btn-secondary {
    background: var(--bg-card);
    border-color: var(--border-light);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
  }

  .btn-secondary:hover { 
    background: var(--bg-card-hover); 
    border-color: rgba(148,163,184,0.2);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-dark));
    color: #fff;
    font-weight: 600;
    border: none;
    box-shadow: 0 2px 12px rgba(16, 185, 129, 0.25), inset 0 1px 0 rgba(255,255,255,0.1);
  }

  .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(16,185,129,0.35), inset 0 1px 0 rgba(255,255,255,0.15);
  }

  .btn-primary:active {
    transform: translateY(0);
  }

  .btn-sm { padding: 6px 14px; font-size: 12px; border-radius: var(--radius-md); }

  .btn-danger { 
    color: var(--danger); 
    border-color: rgba(239,68,68,0.15);
    background: transparent;
  }

  .btn-danger:hover { 
    background: var(--danger-soft); 
    border-color: rgba(239,68,68,0.25);
    transform: translateY(-1px);
  }

  .btn-ghost {
    background: transparent;
    border-color: var(--border-light);
    color: var(--text-secondary);
  }

  .btn-ghost:hover { 
    color: var(--text-primary); 
    background: rgba(255,255,255,0.03);
    border-color: rgba(148,163,184,0.2);
  }
  
  .wb-geo-score {
    display: none;
    margin-left: 4px;
    padding: 1px 8px;
    border-radius: 999px;
    background: #10b981;
    color: #fff;
    font-size: 13px;
    font-weight: 800;
    line-height: 1.5;
    letter-spacing: 0.2px;
  }
  .wb-geo-score.on { display: inline-flex; }
  /* AI workbench view */
  #view-ai {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
    min-height: 0;
    height: 100%;
  }
  #view-ai .topbar { flex-shrink: 0; }
  .wb-subbar {
    height: 52px; flex-shrink: 0;
    border-bottom: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 20px; background: var(--bg-secondary);
  }
  .wb-subbar .topbar-title { font-size: 16px; }
  .topbar-left { display: flex; align-items: center; gap: 14px; }
  .back-btn {
    background: none; border: none; color: var(--text-muted); cursor: pointer;
    padding: 6px; display: flex; align-items: center; border-radius: var(--radius-md);
    transition: all var(--transition-fast);
  }
  .back-btn:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); transform: translateX(-2px); }
  .wb-subbar-actions {
    display: none;
    align-items: center;
    gap: 8px;
  }
  .wb-subbar-actions.show { display: flex; }


  .topbar-score {
    display: flex; align-items: center; gap: 8px;
    padding: 5px 14px; border-radius: var(--radius-lg);
    background: var(--bg-card); border: 1px solid var(--border-color);
    cursor: pointer; transition: all var(--transition-fast);
  }
  .topbar-score:hover { border-color: var(--accent-green); }
  .topbar-score.active { border-color: var(--accent-green); background: rgba(16,185,129,0.06); }
  .topbar-score-ring {
    width: 22px; height: 22px; border-radius: 50%;
    background: conic-gradient(var(--accent-green) 0% 0%, var(--border-color) 0% 100%);
    position: relative; transition: background 0.5s;
  }
  .topbar-score-ring::before { content: ''; position: absolute; inset: 3px; border-radius: 50%; background: var(--bg-card); }
  .topbar-score-val { font-size: 14px; font-weight: 700; color: var(--accent-green); }
  .topbar-score-label { font-size: 11px; color: var(--text-muted); }
  .panel { display: none; }
  .panel.on { display: block; }
  #view-ai .editor { position: relative; min-width: 0; }
  #view-ai .write-bar { display: none; }

  /* ===== Workbench ===== */
  .workbench { flex: 1; display: flex; overflow: hidden; position: relative; }

  /* LEFT: Params */
  .params {
    width: 340px; min-width: 300px;
    flex-shrink: 0;
    height: 100%;
    border-right: 1px solid var(--border-color);
    overflow: hidden;
    padding: 0;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    display: flex; flex-direction: column;
    position: relative;
  }
  .params-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 16px 16px 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 0;
  }
  .param-card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius-lg); padding: 14px;
    transition: border-color var(--transition-fast);
  }
  .param-card:hover { border-color: var(--border-light); }
  .card-title {
    font-size: 13px; font-weight: 700; margin-bottom: 10px;
    display: flex; align-items: center; gap: 6px; color: var(--text-primary);
  }
  .card-title::before {
    content: ''; width: 3px; height: 14px;
    background: linear-gradient(180deg, var(--accent-green), var(--accent-blue));
    border-radius: 2px;
  }
  .card-title.b::before { background: linear-gradient(180deg, var(--accent-blue), var(--accent-cyan)); }
  .card-title.o::before { background: linear-gradient(180deg, var(--accent-orange), var(--warning)); }
  .card-title.p::before { background: linear-gradient(180deg, var(--accent-purple), var(--accent-blue-light)); }

  .input, .textarea {
    width: 100%; padding: 9px 12px; border-radius: var(--radius-md);
    border: 1px solid var(--border-color); background: var(--bg-input);
    color: var(--text-primary); font-size: 13px; outline: none;
    font-family: inherit; transition: all var(--transition-fast);
  }
  .input:focus, .textarea:focus {
    border-color: var(--accent-green);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.08);
    background: var(--bg-card);
  }
  .input::placeholder, .textarea::placeholder { color: var(--text-muted); }
  .textarea { resize: vertical; min-height: 52px; line-height: 1.6; }
  .label {
    display: block; font-size: 12px; color: var(--text-secondary);
    margin-bottom: 5px; font-weight: 600;
  }
  .label .required { color: var(--danger); }
  .hint { font-size: 11px; color: var(--text-muted); margin-top: 4px; line-height: 1.5; }

  .chips { display: flex; flex-wrap: wrap; gap: 5px; }
  .chip {
    padding: 4px 12px; border-radius: var(--radius-full);
    border: 1px solid var(--border-light); background: var(--bg-input);
    color: var(--text-secondary); font-size: 12px; cursor: pointer;
    transition: all var(--transition-fast); font-weight: 500;
  }
  .chip:hover { color: var(--text-primary); border-color: var(--accent-green); background: var(--accent-green-soft); }
  .chip.on {
    background: linear-gradient(135deg, rgba(16,185,129,0.12), rgba(16,185,129,0.06));
    border-color: var(--accent-green); color: var(--accent-green);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.1);
  }

  .tabs { display: flex; gap: 4px; margin-bottom: 8px; }
  .tab {
    flex: 1; padding: 5px; border-radius: var(--radius-md);
    border: 1px solid var(--border-color); background: var(--bg-input);
    color: var(--text-secondary); font-size: 12px; cursor: pointer;
    text-align: center; font-family: inherit; transition: all var(--transition-fast);
  }
  .tab:hover { border-color: var(--border-light); }
  .tab.on {
    border-color: var(--accent-green);
    background: linear-gradient(135deg, rgba(16,185,129,0.12), rgba(16,185,129,0.06));
    color: var(--accent-green); font-weight: 600;
  }

  .sw-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 10px; background: var(--bg-input);
    border-radius: var(--radius-md); margin-bottom: 5px;
    border: 1px solid var(--border-color); transition: all var(--transition-fast);
  }
  .sw-row:hover { border-color: var(--border-light); background: var(--bg-card); }
  .sw-row .txt { font-size: 12px; color: var(--text-secondary); font-weight: 500; }
  .sw {
    width: 32px; height: 17px; background: var(--text-ghost);
    border-radius: var(--radius-full); position: relative;
    cursor: pointer; flex-shrink: 0; transition: all var(--transition-base);
  }
  .sw.on { background: linear-gradient(135deg, var(--accent-green), var(--accent-green-dark)); box-shadow: 0 0 8px rgba(16,185,129,0.3); }
  .sw-knob {
    width: 13px; height: 13px; background: #fff; border-radius: 50%;
    position: absolute; top: 2px; left: 2px;
    transition: transform var(--transition-base); box-shadow: 0 1px 3px rgba(0,0,0,0.3);
  }
  .sw.on .sw-knob { transform: translateX(15px); }

  /* EEAT Signal Cards */
  .eeat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .eeat-card {
    position: relative; background: var(--bg-input);
    border: 1.5px solid var(--border-color); border-radius: var(--radius-lg);
    padding: 14px 10px; cursor: pointer; transition: all var(--transition-base);
    text-align: center; overflow: hidden;
  }
  .eeat-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0; opacity: 0;
    transition: opacity var(--transition-fast);
  }
  .eeat-card:hover { border-color: var(--border-light); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
  .eeat-card.on { border-color: var(--accent-green); background: linear-gradient(180deg, rgba(16,185,129,0.06) 0%, var(--bg-input) 100%); }
  .eeat-card.on::before { opacity: 1; }
  .eeat-check {
    position: absolute; top: 6px; right: 6px; width: 18px; height: 18px;
    border-radius: 50%; background: var(--accent-green); color: #fff;
    font-size: 10px; display: none; align-items: center; justify-content: center;
    box-shadow: 0 2px 6px rgba(16,185,129,0.4);
  }
  .eeat-card.on .eeat-check { display: flex; }
  .eeat-icon { font-size: 18px; margin-bottom: 6px; }
  .eeat-name { font-size: 11px; font-weight: 600; color: var(--text-primary); margin-bottom: 2px; }
  .eeat-desc { font-size: 10px; color: var(--text-muted); line-height: 1.3; }

  .scheme-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
  .scheme-card {
    padding: 10px; border-radius: var(--radius-md);
    border: 1px solid var(--border-color); background: var(--bg-input);
    cursor: pointer; position: relative; transition: all var(--transition-fast);
  }
  .scheme-card:hover { border-color: var(--border-light); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
  .scheme-card.on {
    border-color: var(--accent-green);
    background: linear-gradient(180deg, rgba(16,185,129,0.08) 0%, var(--bg-input) 100%);
  }
  .scheme-card.on::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }
  .scheme-icon { font-size: 15px; margin-bottom: 3px; }
  .scheme-name { font-size: 12px; font-weight: 600; color: var(--text-primary); }
  .scheme-desc { font-size: 11px; color: var(--text-muted); margin-top: 2px; line-height: 1.4; }

  /* ===== Keyword Analysis Panel ===== */
  .kw-expand-panel {
    position: absolute; top: 0; left: 100%; margin-left: 8px;
    width: 340px; background: var(--bg-card);
    border: 1px solid var(--border-color); border-radius: var(--radius-xl);
    padding: 0; box-shadow: var(--shadow-lg); z-index: 50;
    display: none; overflow: hidden;
  }
  .kw-expand-panel.on { display: block; }
  .kw-expand-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 14px; font-size: 12px; font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(90deg, rgba(16,185,129,0.04), rgba(59,130,246,0.04));
  }
  .kw-expand-count { font-size: 11px; color: var(--text-muted); font-weight: 500; }
  .kw-expand-body { padding: 12px; max-height: 480px; overflow-y: auto; }
  .kw-analyze-input { margin-bottom: 12px; }
  .kw-analyze-textarea {
    width: 100%; padding: 8px 10px; border-radius: var(--radius-md);
    border: 1px solid var(--border-color); background: var(--bg-input);
    color: var(--text-primary); font-size: 12px; outline: none;
    font-family: inherit; resize: vertical; min-height: 60px; line-height: 1.5;
    margin-bottom: 8px;
  }
  .kw-analyze-textarea:focus { border-color: var(--accent-green); box-shadow: 0 0 0 2px rgba(16,185,129,0.06); }
  .kw-analyze-textarea::placeholder { color: var(--text-muted); }
  .kw-analyze-btn {
    width: 100%; padding: 8px; border-radius: var(--radius-md);
    border: 1px solid var(--accent-green); background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(16,185,129,0.04));
    color: var(--accent-green); font-size: 12px; font-weight: 600; cursor: pointer;
    display: flex; align-items: center; justify-content: center; gap: 6px;
    font-family: inherit; transition: all var(--transition-fast);
  }
  .kw-analyze-btn:hover { background: linear-gradient(135deg, rgba(16,185,129,0.15), rgba(16,185,129,0.08)); transform: translateY(-1px); }
  .kw-expand-section { margin-bottom: 10px; }
  .kw-expand-sec-title {
    font-size: 11px; font-weight: 600; color: var(--text-secondary);
    margin-bottom: 6px; display: flex; align-items: center; gap: 6px;
  }
  .kw-expand-list { display: flex; flex-wrap: wrap; gap: 5px; }
  .kw-expand-tag {
    padding: 3px 8px; border-radius: var(--radius-md);
    font-size: 11px; background: var(--bg-input);
    color: var(--text-secondary); border: 1px solid var(--border-color);
    cursor: pointer; transition: all var(--transition-fast);
    display: inline-flex; align-items: center; gap: 4px;
  }
  .kw-expand-tag:hover { border-color: var(--accent-green); color: var(--accent-green); }
  .kw-expand-tag.on {
    background: linear-gradient(135deg, rgba(16,185,129,0.12), rgba(16,185,129,0.06));
    border-color: var(--accent-green); color: var(--accent-green);
  }
  .kw-expand-tag .tag-potential {
    font-size: 9px; padding: 1px 4px; border-radius: 3px; font-weight: 600;
  }
  .kw-expand-tag .tag-potential.high { background: rgba(16,185,129,0.15); color: var(--accent-green); }
  .kw-expand-tag .tag-potential.mid { background: rgba(59,130,246,0.15); color: var(--accent-blue); }
  .kw-expand-cover {
    margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--border-color);
    display: flex; align-items: center; gap: 8px;
  }
  .kw-expand-cover-label { font-size: 10px; color: var(--text-muted); font-weight: 600; white-space: nowrap; }
  .kw-expand-cover-bar { flex: 1; height: 4px; background: var(--bg-input); border-radius: 2px; overflow: hidden; }
  .kw-expand-cover-fill { height: 100%; border-radius: 2px; background: linear-gradient(90deg, var(--accent-green), var(--accent-blue)); transition: width 0.5s ease; }
  .kw-expand-cover-val { font-size: 11px; font-weight: 700; color: var(--accent-green); min-width: 30px; text-align: right; }

  .kw-input-wrap {
    position: relative; flex: 1; min-width: 0;
  }
  .kw-input-wrap .input { padding-right: 36px; }
  .kw-send-btn {
    position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
    width: 28px; height: 28px; padding: 0; border: none;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--radius-sm); background: transparent;
    color: var(--accent-green); cursor: pointer;
    transition: all var(--transition-fast);
  }
  .kw-send-btn:hover {
    color: var(--accent-green);
    background: rgba(16,185,129,0.12);
  }
  .kw-row {
    display: flex; align-items: flex-start; gap: 6px; margin-top: 8px;
  }
  .kw-area {
    display: flex; flex-wrap: wrap; gap: 5px; flex: 1; min-width: 0;
    max-height: 54px; overflow-y: auto; margin-top: 0;
  }
  .kw-tag {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 8px; border-radius: var(--radius-sm);
    font-size: 11px; background: rgba(59,130,246,0.1);
    color: var(--accent-blue-light); border: 1px solid rgba(59,130,246,0.15);
  }
  .kw-tag .x { cursor: pointer; opacity: 0.5; font-size: 11px; }
  .kw-tag .x:hover { opacity: 1; }
  .kw-all-btn {
    width: 28px; height: 28px; flex-shrink: 0; padding: 0;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--radius-sm); border: 1px solid var(--border-color);
    background: var(--bg-input); color: var(--text-secondary); cursor: pointer;
    transition: all var(--transition-fast);
  }
  .kw-all-btn:hover, .kw-all-btn.on {
    border-color: var(--accent-blue); color: var(--accent-blue);
    background: rgba(59,130,246,0.1);
  }
  .kw-all-btn svg { display: block; }

  /* Keyword expand panel */
  .kw-expand-wrap { position: relative; }
  .kw-expand-panel {
    position: absolute; top: 0; left: 100%; margin-left: 8px;
    width: 260px; background: var(--bg-card);
    border: 1px solid var(--border-color); border-radius: var(--radius-lg);
    padding: 12px; box-shadow: var(--shadow-lg); z-index: 50;
    display: none;
  }
  .kw-expand-panel.on { display: block; }
  .kw-expand-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 10px; font-size: 12px; font-weight: 600;
  }
  .kw-expand-count { font-size: 11px; color: var(--text-muted); }
  .kw-expand-list {
    display: flex; flex-wrap: wrap; gap: 5px;
    max-height: 280px; overflow-y: auto;
  }
  .kw-expand-tag {
    padding: 3px 8px; border-radius: var(--radius-sm);
    font-size: 11px; background: var(--bg-input);
    color: var(--text-secondary); border: 1px solid var(--border-color);
    cursor: pointer; transition: all var(--transition-fast);
  }
  .kw-expand-tag:hover { border-color: var(--accent-green); color: var(--accent-green); }
  .kw-expand-tag.on {
    background: linear-gradient(135deg, rgba(16,185,129,0.12), rgba(16,185,129,0.06));
    border-color: var(--accent-green); color: var(--accent-green);
  }

  /* Fixed generate button at bottom of left panel */
  .gen-btn-wrap {
    flex-shrink: 0;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    z-index: 10;
  }
  .gen-btn {
    width: 100%; padding: 11px; border-radius: var(--radius-md);
    border: none; background: linear-gradient(135deg, var(--accent-green), var(--accent-green-dark));
    color: #fff; font-size: 13px; font-weight: 600; cursor: pointer;
    display: flex; align-items: center; justify-content: center; gap: 6px;
    box-shadow: 0 2px 12px rgba(16,185,129,0.2), inset 0 1px 0 rgba(255,255,255,0.1);
    font-family: inherit; transition: all var(--transition-fast);
  }
  .gen-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(16,185,129,0.3); }
  .gen-btn:active { transform: translateY(0); }

  /* CENTER: Editor */
  .editor { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }
  .etoolbar {
    padding: 10px 20px; border-bottom: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: space-between;
    background: var(--bg-secondary); flex-shrink: 0;
  }
  .etabs { display: flex; gap: 4px; }
  .etab {
    padding: 5px 14px; border-radius: var(--radius-md);
    font-size: 13px; cursor: pointer; color: var(--text-muted);
    border: 1px solid transparent; background: transparent;
    font-family: inherit; transition: all var(--transition-fast); font-weight: 500;
    display: flex; align-items: center; gap: 6px;
  }
  .etab:hover { color: var(--text-primary); }
  .etab.on { background: var(--bg-card); color: var(--text-primary); border-color: var(--border-light); font-weight: 600; }
  .etab-num {
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--border-color); color: var(--text-muted);
    font-size: 10px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-fast);
  }
  .etab.on .etab-num { background: var(--accent-green); color: #fff; }
  #view-ai .btn {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 5px 12px; border-radius: var(--radius-md);
    font-size: 12px; cursor: pointer; border: 1px solid transparent;
    font-family: inherit; transition: all var(--transition-fast); font-weight: 500;
  }
  #view-ai .btn-secondary {
    background: var(--bg-card);
    border-color: var(--border-light);
    color: var(--text-primary);
  }
  #view-ai .btn-g {
    background: transparent; border-color: var(--border-light); color: var(--text-secondary);
  }
  .btn-g:hover { color: var(--text-primary); background: rgba(255,255,255,0.03); border-color: var(--border-light); }
  #view-ai .btn-p {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-dark));
    color: #fff; box-shadow: 0 2px 8px rgba(16,185,129,0.2);
  }
  .btn-p:hover { box-shadow: 0 4px 14px rgba(16,185,129,0.3); transform: translateY(-1px); }
  #view-ai .btn-o,
  #view-ai #wb-optimize-btn.btn-primary {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-dark));
    color: #fff;
    border: none;
    box-shadow: 0 2px 12px rgba(16, 185, 129, 0.25), inset 0 1px 0 rgba(255,255,255,0.1);
  }
  #view-ai .btn-o:hover,
  #view-ai #wb-optimize-btn.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(16,185,129,0.35), inset 0 1px 0 rgba(255,255,255,0.15);
  }
  #view-ai .btn-o:active,
  #view-ai #wb-optimize-btn.btn-primary:active {
    transform: translateY(0);
  }
  #view-ai .btn-b { background: linear-gradient(135deg, var(--accent-blue), #2563eb); color: #fff; }
  .btn-b:hover { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(59,130,246,0.3); }

  /* Step guide banner */
  .step-guide {
    padding: 10px 20px; border-bottom: 1px solid var(--border-color);
    background: linear-gradient(90deg, rgba(16,185,129,0.04), rgba(59,130,246,0.04));
    flex-shrink: 0;
  }
  .step-guide-inner {
    max-width: 900px; margin: 0 auto;
    display: flex; align-items: center; gap: 10px;
    font-size: 12px; color: var(--text-secondary);
  }
  .step-guide-num {
    width: 20px; height: 20px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    color: #fff; font-size: 10px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
  }
  .step-guide-text { font-weight: 500; }
  .step-guide-arrow {
    color: var(--text-muted); margin-left: auto;
    display: flex; align-items: center; gap: 8px;
  }
  .step-guide-arrow button {
    background: none; border: 1px solid var(--border-light);
    color: var(--text-secondary); padding: 3px 10px;
    border-radius: var(--radius-md); font-size: 11px;
    cursor: pointer; transition: all var(--transition-fast);
    font-family: inherit;
  }
  .step-guide-arrow button:hover {
    border-color: var(--accent-green); color: var(--accent-green);
  }

  /* Writing Style bar */
  .style-bar {
    padding: 8px 20px; border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary); display: flex; align-items: center;
    gap: 10px; flex-shrink: 0;
  }
  .style-label { font-size: 12px; color: var(--text-muted); font-weight: 600; }
  .style-chips { display: flex; gap: 5px; flex-wrap: wrap; }
  .style-chip {
    padding: 3px 10px; border-radius: var(--radius-full);
    border: 1px solid var(--border-color); background: var(--bg-card);
    color: var(--text-secondary); font-size: 12px; cursor: pointer;
    transition: all var(--transition-fast); font-weight: 500;
  }
  .style-chip:hover { color: var(--text-primary); border-color: var(--border-light); }
  .style-chip.on {
    border-color: var(--accent-green);
    background: linear-gradient(135deg, rgba(16,185,129,0.12), rgba(16,185,129,0.06));
    color: var(--accent-green);
  }

  /* GEO Score Panel */
  .geo-panel {
    background: linear-gradient(180deg, rgba(16,185,129,0.03) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
    overflow: hidden; max-height: 0;
    transition: max-height 0.35s ease, padding 0.35s ease, opacity 0.35s ease;
    opacity: 0; flex-shrink: 0;
  }
  .geo-panel.open { max-height: 520px; opacity: 1; padding: 14px 20px; }
  .geo-paste-box {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius-lg); padding: 12px; margin-bottom: 14px;
  }
  .geo-paste-input {
    width: 100%; padding: 8px 10px; border-radius: var(--radius-md);
    border: 1px solid var(--border-color); background: var(--bg-input);
    color: var(--text-primary); font-size: 12px; outline: none;
    font-family: inherit; resize: vertical; min-height: 60px; line-height: 1.5;
  }
  .geo-paste-input:focus { border-color: var(--accent-green); box-shadow: 0 0 0 2px rgba(16,185,129,0.06); }
  .geo-paste-input::placeholder { color: var(--text-muted); }
  .geo-panel-inner { max-width: 900px; margin: 0 auto; }
  .geo-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
  .geo-title { font-size: 13px; font-weight: 700; display: flex; align-items: center; gap: 6px; }
  .geo-score-big { font-size: 26px; font-weight: 700; color: var(--accent-green); }
  .geo-score-label { font-size: 10px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
  .geo-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin-bottom: 12px; }
  .geo-item { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 10px; text-align: center; }
  .geo-item-name { font-size: 10px; color: var(--text-muted); margin-bottom: 5px; text-transform: uppercase; letter-spacing: 0.3px; }
  .geo-item-bar { height: 3px; background: var(--bg-input); border-radius: 2px; overflow: hidden; margin-bottom: 5px; }
  .geo-item-fill { height: 100%; border-radius: 2px; transition: width 0.8s ease; }
  .geo-item-val { font-size: 12px; font-weight: 700; }
  .geo-actions { display: flex; gap: 8px; justify-content: flex-end; }

  .write-bar {
    padding: 10px 20px; border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary); flex-shrink: 0;
  }
  .write-inner { max-width: 900px; margin: 0 auto; }
  .write-tabs { display: flex; gap: 4px; margin-bottom: 8px; align-items: center; }
  .write-hint {
    margin-left: 10px;
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .write-hint svg { flex-shrink: 0; }
  .write-tab {
    padding: 5px 12px; border-radius: var(--radius-md);
    border: 1px solid var(--border-color); background: var(--bg-card);
    color: var(--text-secondary); font-size: 12px; cursor: pointer;
    font-family: inherit; transition: all var(--transition-fast); font-weight: 500;
  }
  .write-tab:hover { color: var(--text-primary); }
  .write-tab.on {
    border-color: var(--accent-blue);
    background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(59,130,246,0.04));
    color: var(--accent-blue);
  }
  .write-panel { display: none; }
  .write-panel.on { display: block; }
  .write-input {
    width: 100%; padding: 8px 12px; border-radius: var(--radius-md);
    border: 1px solid var(--border-color); background: var(--bg-input);
    color: var(--text-primary); font-size: 13px; outline: none;
    resize: vertical; min-height: 48px; line-height: 1.6; font-family: inherit;
  }
  .write-input:focus { border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(59,130,246,0.08); }
  .write-input::placeholder { color: var(--text-muted); }

  .ebody { flex: 1; overflow-y: auto; padding: 14px 20px; background: var(--bg-primary); }
  .einner { max-width: 900px; margin: 0 auto; }
  .etitle {
    width: 100%; padding: 10px 0; border: none;
    border-bottom: 1px solid var(--border-color); background: transparent;
    color: var(--text-primary); font-size: 20px; font-weight: 700;
    outline: none; font-family: inherit; margin-bottom: 10px;
    letter-spacing: -0.3px;
  }
  .etitle:focus { border-bottom-color: var(--accent-green); }
  .etitle::placeholder { color: var(--text-muted); font-weight: 400; }
  .earea {
    width: 100%; min-height: 350px; border: none; background: transparent;
    color: var(--text-primary); font-size: 14px; line-height: 1.8;
    outline: none; resize: vertical; font-family: inherit;
  }
  .earea::placeholder { color: var(--text-muted); }

  .earea-toolbar { display: flex; gap: 6px; margin-bottom: 10px; }
  .earea-mode-btn {
    padding: 5px 12px; border-radius: var(--radius-md);
    border: 1px solid var(--border-color); background: var(--bg-card);
    color: var(--text-secondary); font-size: 12px; font-weight: 500;
    cursor: pointer; transition: all 0.15s;
  }
  .earea-mode-btn:hover { color: var(--text-primary); border-color: var(--border-light); }
  .earea-mode-btn.on { background: var(--accent-green); border-color: var(--accent-green); color: #fff; font-weight: 600; }

  .earea-preview {
    font-size: 14px; line-height: 1.85; color: var(--text-primary);
    min-height: 350px; word-break: break-word;
  }
  .earea-preview h1, .earea-preview h2, .earea-preview h3,
  .earea-preview h4, .earea-preview h5, .earea-preview h6 {
    font-weight: 700; color: var(--text-primary); margin: 20px 0 10px;
    line-height: 1.4;
  }
  .earea-preview h1 { font-size: 22px; }
  .earea-preview h2 { font-size: 19px; padding-bottom: 6px; border-bottom: 1px solid var(--border-color); }
  .earea-preview h3 { font-size: 16px; }
  .earea-preview h4, .earea-preview h5, .earea-preview h6 { font-size: 14px; }
  .earea-preview p { margin: 0 0 12px; }
  .earea-preview ul, .earea-preview ol { margin: 0 0 12px; padding-left: 22px; }
  .earea-preview li { margin-bottom: 6px; }
  .earea-preview blockquote {
    margin: 0 0 12px; padding: 8px 14px; border-left: 3px solid var(--accent-green);
    background: var(--accent-green-soft); color: var(--text-secondary); border-radius: 0 var(--radius-md) var(--radius-md) 0;
  }
  .earea-preview code {
    background: var(--bg-elevated); border: 1px solid var(--border-color); border-radius: 4px;
    padding: 1px 5px; font-size: 12.5px; color: var(--accent-green); font-family: Consolas, Monaco, monospace;
  }
  .earea-preview pre {
    background: var(--bg-elevated); border: 1px solid var(--border-color); border-radius: var(--radius-md);
    padding: 12px 14px; overflow-x: auto; margin: 0 0 12px;
  }
  .earea-preview pre code { background: none; border: none; padding: 0; color: var(--text-secondary); }
  .earea-preview a { color: var(--accent-blue); text-decoration: underline; }
  .earea-preview hr { border: none; border-top: 1px solid var(--border-color); margin: 18px 0; }
  .earea-preview strong { color: var(--text-primary); font-weight: 700; }

  .edit-hint {
    background: linear-gradient(135deg, rgba(59,130,246,0.06), rgba(16,185,129,0.04));
    border: 1px solid rgba(59,130,246,0.1);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 12px; color: var(--text-secondary);
    margin-bottom: 12px; display: flex; align-items: center; gap: 8px;
  }
  .edit-hint svg { flex-shrink: 0; }

  .preview { display: none; }
  .preview.on { display: block; }
  .part { max-width: 820px; margin: 0 auto; }
  .part h1 { font-size: 22px; font-weight: 700; margin-bottom: 10px; letter-spacing: -0.3px; }
  .part .meta { font-size: 12px; color: var(--text-muted); margin-bottom: 16px; }
  .part p { font-size: 14px; line-height: 1.8; margin-bottom: 12px; color: var(--text-secondary); }
  .part h2 { font-size: 16px; font-weight: 700; margin: 16px 0 8px; color: var(--text-primary); }
  .part h3 { font-size: 14px; font-weight: 600; margin: 12px 0 6px; color: var(--text-primary); }
  .part blockquote { border-left: 3px solid var(--accent-green); padding-left: 12px; margin: 12px 0; color: var(--text-secondary); font-size: 13px; }
  .part ul { margin: 8px 0 12px 18px; color: var(--text-secondary); font-size: 14px; line-height: 1.8; }
  .part li { margin-bottom: 3px; }

  .efooter {
    padding: 8px 20px; border-top: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: space-between;
    background: var(--bg-secondary); font-size: 11px; color: var(--text-muted); flex-shrink: 0;
  }
  .efooter span { color: var(--text-secondary); font-weight: 600; }
  .footer-score {
    display: flex; align-items: center; gap: 6px;
    padding: 3px 10px; border-radius: var(--radius-md);
    background: var(--bg-card); border: 1px solid var(--border-color);
    opacity: 0.5; cursor: pointer; transition: all var(--transition-fast);
  }
  .footer-score:hover { opacity: 1; border-color: var(--accent-green); }
  .footer-score-ring {
    width: 14px; height: 14px; border-radius: 50%;
    background: conic-gradient(var(--accent-green) 0% 0%, var(--border-color) 0% 100%);
    position: relative;
  }
  .footer-score-ring::before { content: ''; position: absolute; inset: 2px; border-radius: 50%; background: var(--bg-card); }
  .footer-score-val { font-size: 12px; font-weight: 700; color: var(--accent-green); }

  /* ===== RIGHT: Assets Panel（与左侧栏 / 知识库·图片库同色） ===== */
  .assets-panel {
    width: 300px; min-width: 280px;
    flex-shrink: 0;
    border-left: 1px solid rgba(51, 65, 85, 0.4);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    display: flex; flex-direction: column; overflow: hidden;
  }
  .assets-header {
    padding: 14px 14px 10px;
    border-bottom: 1px solid rgba(51, 65, 85, 0.3);
    background: transparent;
  }
  .assets-title { font-size: 13px; font-weight: 700; margin-bottom: 8px; color: var(--text-title); }
  .assets-tabs { display: flex; gap: 4px; }
  .assets-tab {
    flex: 1; padding: 6px; border-radius: var(--radius-md);
    border: 1px solid rgba(51, 65, 85, 0.4); background: var(--bg-card);
    color: var(--text-body); font-size: 12px; cursor: pointer;
    text-align: center; font-family: inherit; transition: all var(--transition-fast); font-weight: 500;
  }
  .assets-tab:hover { color: var(--text-title); background: var(--bg-elevated); }
  .assets-tab.on {
    border-color: var(--accent-emerald);
    background: rgba(16, 185, 129, 0.08);
    color: var(--accent-emerald);
  }
  .assets-body { flex: 1; overflow-y: auto; padding: 10px 12px; }
  .assets-section { margin-bottom: 12px; }
  .assets-section-title {
    font-size: 10px; font-weight: 700; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px;
  }

  /* KB Folder Cards — 对齐知识库卡片 */
  .kb-folder-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .kb-folder-card {
    background: var(--bg-card); border: 1px solid rgba(51, 65, 85, 0.4);
    border-radius: var(--radius-card); padding: 14px 10px;
    text-align: center; cursor: pointer; transition: all 0.15s ease;
    position: relative;
  }
  .kb-folder-card:hover {
    border-color: rgba(51, 65, 85, 0.8);
    background: var(--bg-elevated);
    color: var(--text-title);
  }
  .kb-folder-card.on {
    border-color: var(--accent-emerald);
    background: rgba(16, 185, 129, 0.08);
    box-shadow: 0 0 0 1px rgba(16, 185, 129, 0.1);
  }
  .kb-folder-card.on::before { display: none; }
  .kb-folder-card.on::after {
    content: '✓'; position: absolute; top: 6px; right: 6px;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--accent-emerald); color: #fff;
    font-size: 9px; display: flex; align-items: center; justify-content: center;
  }
  .kb-folder-icon {
    width: 36px; height: 36px; margin: 0 auto 8px;
    border-radius: 8px; background: var(--bg-elevated);
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; color: var(--accent-emerald);
  }
  .kb-folder-name { font-size: 12px; font-weight: 600; color: var(--text-title); }
  .kb-folder-card.on .kb-folder-name { color: var(--accent-emerald); }
  .kb-folder-count { font-size: 10px; color: var(--text-muted); margin-top: 2px; }

  /* Image Library — 对齐图片库卡片 */
  .img-folder {
    background: var(--bg-card); border: 1px solid rgba(51, 65, 85, 0.4);
    border-radius: var(--radius-card); margin-bottom: 8px; overflow: hidden;
    transition: border-color 0.15s ease;
  }
  .img-folder:hover { border-color: rgba(51, 65, 85, 0.8); }
  .img-folder-head {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 12px; cursor: pointer;
    font-size: 13px; font-weight: 600; color: var(--text-body);
    transition: all 0.15s ease; user-select: none;
  }
  .img-folder-head:hover { color: var(--text-title); background: var(--bg-elevated); }
  .img-folder.open .img-folder-head { color: var(--accent-emerald); }
  .img-folder-head svg { transition: transform var(--transition-fast); flex-shrink: 0; }
  .img-folder.open .img-folder-head svg.arrow { transform: rotate(90deg); }
  .img-folder-body {
    padding: 0 10px 10px;
    display: none;
  }
  .img-folder.open .img-folder-body { display: block; }

  .img-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .img-card {
    border-radius: var(--radius-card); background: var(--bg-card);
    border: 1px solid rgba(51, 65, 85, 0.4); overflow: hidden;
    cursor: pointer; position: relative; transition: all 0.2s ease;
  }
  .img-card:hover {
    border-color: rgba(51, 65, 85, 0.8); transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  }
  .img-card.on {
    border-color: var(--accent-emerald) !important;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1) !important;
  }
  .img-thumb {
    width: 100%; aspect-ratio: 1 / 1;
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
    background: var(--bg-elevated) !important;
  }
  .img-thumb svg { opacity: 0.35; color: var(--text-muted); }
  .img-overlay {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    background: rgba(13, 17, 23, 0.45); opacity: 0;
    transition: opacity 0.15s ease; z-index: 2;
  }
  .img-card:hover .img-overlay { opacity: 1; }
  .img-card.on .img-overlay { opacity: 1; background: rgba(16, 185, 129, 0.12); }
  .img-check {
    width: 26px; height: 26px; border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.5);
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 12px; transition: all 0.15s ease;
  }
  .img-card.on .img-check { background: var(--accent-emerald); border-color: var(--accent-emerald); }
  .img-info { padding: 8px 10px; }
  .img-name { font-size: 12px; color: var(--text-title); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 500; }
  .img-size { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
  .img-badge {
    position: absolute; top: 6px; right: 6px;
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--accent-emerald); color: white;
    font-size: 9px; display: none;
    align-items: center; justify-content: center;
    z-index: 3;
  }
  .img-card.on .img-badge { display: flex; }

  .img-preview-btn {
    position: absolute; top: 6px; left: 6px;
    width: 22px; height: 22px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: rgba(13, 17, 23, 0.55); color: #fff;
    opacity: 0; transition: opacity 0.15s ease;
    z-index: 3; cursor: pointer; border: none; padding: 0;
  }
  .img-card:hover .img-preview-btn { opacity: 1; }
  .img-preview-btn:hover { background: var(--accent-emerald); }

  .assets-footer {
    padding: 10px 14px; border-top: 1px solid rgba(51, 65, 85, 0.3);
    font-size: 12px; color: var(--text-muted); background: transparent;
  }
  .assets-footer span { color: var(--accent-emerald); font-weight: 700; }

  /* ===== Lightbox ===== */
  .lightbox {
    position: fixed; inset: 0; background: rgba(8,12,20,0.92);
    display: none; align-items: center; justify-content: center;
    z-index: 200; backdrop-filter: blur(8px);
    opacity: 0; transition: opacity 0.3s ease;
  }
  .lightbox.on { display: flex; opacity: 1; }
  .lightbox-close {
    position: absolute; top: 20px; right: 20px;
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(255,255,255,0.08); border: 1px solid var(--border-light);
    color: var(--text-secondary); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; transition: all var(--transition-fast);
  }
  .lightbox-close:hover { background: rgba(255,255,255,0.12); color: var(--text-primary); }
  .lightbox-img {
    max-width: 85vw; max-height: 85vh;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
    border: 1px solid var(--border-color);
  }
  .lightbox-info {
    position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
    background: var(--bg-card); border: 1px solid var(--border-color);
    padding: 8px 16px; border-radius: var(--radius-md);
    font-size: 12px; color: var(--text-secondary);
  }

  /* ===== Overlay (fixed 定位覆盖整个页面，含左侧参数区/顶部工具栏/右侧素材区，避免生成中误触) ===== */
  .overlay {
    position: fixed; inset: 0; background: rgba(8,12,20,0.85);
    display: none; align-items: center; justify-content: center;
    z-index: 200; backdrop-filter: blur(4px);
  }
  .overlay.on { display: flex; }
  .ocard {
    background: var(--bg-card); border: 1px solid var(--border-light);
    border-radius: var(--radius-xl); padding: 32px 36px;
    text-align: center; min-width: 300px;
    box-shadow: var(--shadow-lg);
  }
  .ospin {
    width: 40px; height: 40px; border-radius: 50%;
    border: 3px solid var(--border-color); border-top-color: var(--accent-green);
    animation: alib-wb-spin 0.8s linear infinite; margin: 0 auto 16px;
  }

  .ocard h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
  .ocard p { font-size: 13px; color: var(--text-muted); }
  .ocard .o-hint { margin-top: 6px; font-size: 12px; color: var(--text-muted); opacity: 0.8; }

  /* Toast */
  .toast {
    position: fixed; bottom: 24px; left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card); border: 1px solid var(--border-light);
    color: var(--text-primary); padding: 10px 20px;
    border-radius: var(--radius-md); font-size: 13px;
    z-index: 100; opacity: 0; transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  }
  .toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

  /* Empty state for structured file */
  .struct-empty {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    height: 100%; min-height: 300px; color: var(--text-muted);
  }
  .struct-empty svg { margin-bottom: 16px; opacity: 0.3; }
  .struct-empty h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; color: var(--text-secondary); }
  .struct-empty p { font-size: 13px; margin-bottom: 20px; }

  /* AI 生成的结构化 HTML 文件预览（iframe 独立渲染，保证 <style>/<head> 正常生效） */
  .struct-iframe {
    width: 100%; height: 75vh; min-height: 500px;
    border: 1px solid var(--border-color); border-radius: var(--radius-lg);
    background: #fff; display: block;
  }

  ::-webkit-scrollbar { width: 5px; }
}
@keyframes alib-wb-spin { to { transform: rotate(360deg); } }