:root {
    --bg: #f5f7fa;
    --card: #ffffff;
    --text: #1f2937;
    --text2: #6b7280;
    --border: #e5e7eb;
    --primary: #2563eb;
    --primary2: #1d4ed8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);

    /* ===== 弹窗统一 token 体系 ===== */
    --radius-modal: 16px;                 /* 所有浮层统一圆角 */
    --shadow-modal: 0 20px 60px rgba(0,0,0,0.25);   /* 浮层统一阴影 */
    --overlay-bg: rgba(15, 23, 42, 0.55); /* 普通浮层遮罩（备份/日志/主 modal） */
    --overlay-blur: 4px;                  /* 普通浮层模糊度 */
    --overlay-close-size: 20px;           /* 统一关闭按钮字号 */
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }

  /* 统一浮层关闭按钮（主 modal / 备份框 / 日志框 共用视觉） */
  .overlay-close, .modal-close, .backup-close, .errorlog-close {
    background: none; border: none; cursor: pointer;
    font-size: var(--overlay-close-size); line-height: 1;
    color: var(--text2); opacity: 0.65; padding: 4px 6px; border-radius: 8px;
    display: inline-flex; align-items: center; justify-content: center;
    transition: opacity .15s, color .15s, background .15s, transform .15s;
  }
  .overlay-close:hover, .modal-close:hover, .backup-close:hover, .errorlog-close:hover {
    opacity: 1; color: var(--danger); background: rgba(239,68,68,0.08); transform: scale(1.08);
  }
  .overlay-close:focus-visible, .modal-close:focus-visible, .backup-close:focus-visible, .errorlog-close:focus-visible {
    outline: 2px solid var(--primary); outline-offset: 2px;
  }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
  }
  .container { max-width: 1200px; margin: 0 auto; padding: 24px 16px; }
  .app-header { display: flex; align-items: center; justify-content: flex-start; margin-bottom: 24px; flex-wrap: nowrap; gap: 10px; }
  .app-title { font-size: 22px; font-weight: 700; letter-spacing: -0.5px; white-space: nowrap; }
  .deploy-tag { font-size: 11px; font-weight: 600; color: var(--text2); background: rgba(100,116,139,0.12); border: 1px solid rgba(100,116,139,0.2); border-radius: 999px; padding: 2px 9px; letter-spacing: 0; white-space: nowrap; user-select: all; }
  .dark .deploy-tag { color: #94a3b8; background: rgba(148,163,184,0.12); border-color: rgba(148,163,184,0.22); }
  .app-header-right { display: flex; align-items: center; gap: 8px; flex-wrap: nowrap; min-width: 0; }
  .app-header-secondary { display: flex; align-items: center; gap: 6px; font-size: 14px; flex-wrap: nowrap; }
  @media (max-width: 900px) {
    .app-header { flex-wrap: wrap; }
    .app-header-right, .app-header-secondary { flex-wrap: wrap; }
  }
  .header-user-name { color: var(--text2); font-size: 13px; }
  .btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 18px; border: none; border-radius: 10px; cursor: pointer;
    font-size: 14px; font-weight: 500; transition: all .2s;
  }
  .btn svg { width: 16px; height: 16px; flex-shrink: 0; }
  .btn-primary { background: var(--primary); color: #fff; }
  .btn-primary:hover { background: var(--primary2); }
  .btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
  .btn-outline { background: #fff; border: 1px solid var(--border); color: var(--text); }
  .btn-outline:hover { background: #f9fafb; }
  .btn-outline.active { background: var(--primary); border-color: var(--primary); color: #fff; }
  .btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 8px; }
  .btn-xs { padding: 4px 10px; font-size: 12.5px; border-radius: 7px; }
  .btn-ghost { background: transparent; border: 1px solid transparent; color: var(--text2); }
  .btn-ghost:hover { background: rgba(0,0,0,0.05); }
  .btn-danger { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
  .btn-danger:hover { background: #fee2e2; }
  .btn-success { background: #ecfdf5; color: #059669; border: 1px solid #a7f3d0; }
  .btn-success:hover { background: #d1fae5; }

  /* Login (Creative split-panel) */
  .login-overlay {
    position: fixed; inset: 0; z-index: 4000;
    background: #f8fafc;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
  }
  .login-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  @media (max-width: 1024px) {
    .login-shell { grid-template-columns: 1fr; }
  }
  .login-leftPanel {
    position: relative;
    display: flex; flex-direction: column; justify-content: space-between;
    padding: 48px;
    background: linear-gradient(145deg, #0f172a 0%, #1e3a8a 50%, #1e40af 100%);
    overflow: hidden;
  }
  @media (max-width: 1024px) { .login-leftPanel { display: none; } }
  .login-leftTop {
    position: relative; z-index: 20;
    display: flex; align-items: center; gap: 10px;
    font-size: 20px; font-weight: 700; color: #fff; letter-spacing: 0.5px;
  }
  .login-brandMark {
    width: 40px; height: 40px; border-radius: 10px;
    background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    backdrop-filter: blur(8px);
  }
  .login-brandName { color: #fff; font-size: 20px; font-weight: 700; letter-spacing: 1px; }
  .login-charactersArea { position: relative; z-index: 20; display: flex; align-items: flex-end; justify-content: center; height: 500px; }
  .login-decorBlur1 { position:absolute; top:15%; right:10%; width:300px; height:300px; background:rgba(59,130,246,0.25); border-radius:50%; filter:blur(80px); pointer-events:none; z-index:0; }
  .login-decorBlur2 { position:absolute; bottom:10%; left:5%; width:400px; height:400px; background:rgba(30,64,175,0.3); border-radius:50%; filter:blur(100px); pointer-events:none; z-index:0; }
  .login-decorGrid { position:absolute; inset:0; background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px); background-size:40px 40px; pointer-events:none; z-index:1; }
  .login-rightPanel {
    display: flex; align-items: center; justify-content: center; padding: 48px;
    background: radial-gradient(circle at 20% 0%, rgba(241,245,255,0.9), transparent 35%), radial-gradient(circle at 90% 80%, rgba(221,255,246,0.9), transparent 40%), linear-gradient(160deg, #f8fafc 0%, #eef2ff 52%, #ecfeff 100%);
  }
  .login-formWrapper {
    width: 100%; max-width: 430px; border-radius: 24px;
    background: rgba(255,255,255,0.86); border: 1px solid rgba(148,163,184,0.24);
    box-shadow: 0 24px 50px rgba(30,41,59,0.12); backdrop-filter: blur(14px);
    padding: 36px 32px 30px;
  }
  .login-panelTag { margin: 0 0 16px; text-align:center; font-size:11px; font-weight:700; letter-spacing:0.14em; color:#0f766e; }
  .login-mobileLogo { display:none; align-items:center; justify-content:center; gap:8px; font-size:18px; font-weight:700; color:#0f172a; margin-bottom:24px; }
  @media (max-width:1024px){ .login-mobileLogo{ display:flex; } }
  .login-mobileLogoIcon { width:32px; height:32px; border-radius:8px; background:linear-gradient(135deg,#dbeafe 0%,#ccfbf1 100%); display:flex; align-items:center; justify-content:center; }
  .login-formHeader { text-align:center; margin-bottom:28px; }
  .login-formTitle { font-size:28px; font-weight:700; letter-spacing:-0.03em; color:#0b1220; margin:0 0 8px; line-height:1.3; }
  .login-formSubtitle { font-size:14px; color:#64748b; margin:0; line-height:1.6; }
  .login-form { display:flex; flex-direction:column; gap:4px; }
  .login-fieldLabel { font-size:13px; font-weight:600; color:#334155; margin-bottom:6px; letter-spacing:0.3px; text-transform:uppercase; }
  .login-inputGroup { margin-bottom:20px; }
  .login-inputWrapper {
    position:relative; display:flex; align-items:center; height:50px;
    background:rgba(248,250,252,0.95); border:1px solid #d8dee8; border-radius:14px;
    transition:border-color .2s, box-shadow .2s, background .2s;
  }
  .login-inputWrapper:hover { border-color:#14b8a6; background:#fff; }
  .login-inputWrapper:focus-within { border-color:#0f766e; box-shadow:0 0 0 4px rgba(20,184,166,0.15); background:#fff; }
  .login-prefixIcon { display:flex; align-items:center; padding-left:14px; color:#94a3b8; }
  .login-inputWrapper input { flex:1; height:100%; border:none; outline:none; background:transparent; font-size:14px; color:#111827; padding:0 12px; font-family:inherit; }
  .login-inputWrapper input::placeholder { color:#9aa4b2; }
  .login-eyeToggle { display:flex; align-items:center; padding-right:14px; color:#64748b; cursor:pointer; font-size:16px; transition:color .2s; background:none; border:none; }
  .login-eyeToggle:hover { color:#0f766e; }
  .login-errorBox { padding:11px 14px; font-size:13px; color:#b91c1c; background:#fff1f2; border:1px solid #fecdd3; border-radius:12px; margin-bottom:16px; display:none; }
  .login-errorBox.show { display:block; }
  .login-submitBtn {
    width:100%; height:52px; font-size:15px; font-weight:600; border-radius:14px;
    background:linear-gradient(135deg,#0f766e 0%,#14b8a6 55%,#22d3ee 100%); border:none; color:#fff;
    letter-spacing:0.5px; cursor:pointer; box-shadow:0 14px 26px rgba(15,118,110,0.24);
    transition:transform .2s, box-shadow .2s, opacity .2s; font-family:inherit;
  }
  .login-submitBtn:hover { transform:translateY(-1px); box-shadow:0 16px 28px rgba(15,118,110,0.32); }
  .login-submitBtn:active { transform:translateY(1px); opacity:0.85; }
  .login-submitBtn:disabled { opacity:0.6; cursor:not-allowed; transform:none; }

  /* Toolbar */
  .toolbar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; align-items: center; }
  .search-box { flex: 1; min-width: 200px; position: relative; }
  .search-box input {
    width: 100%; padding: 10px 14px; padding-left: 38px;
    border: 1px solid var(--border); border-radius: 10px; font-size: 14px;
    background: #fff; outline: none; transition: border .2s;
  }
  .search-box input:focus { border-color: var(--primary); }
  .search-box svg {
    position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
    color: var(--text2); width: 16px; height: 16px;
  }
  .filter-group { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
  .sort-dropdown { position: relative; }
  .sort-trigger {
    display: flex; align-items: center; gap: 8px;
    padding: 6px 14px 6px 16px; border: 1px solid var(--border); border-radius: 20px;
    font-size: 13px; cursor: pointer; background: #fff; color: var(--text);
    transition: all .2s; user-select: none; white-space: nowrap;
  }
  .sort-trigger:hover { background: #f3f4f6; }
  .sort-trigger.open { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
  .sort-arrow { width: 14px; height: 14px; transition: transform .2s; color: var(--text2); }
  .sort-trigger.open .sort-arrow { transform: rotate(180deg); }
  .sort-menu {
    position: absolute; top: calc(100% + 6px); right: 0; z-index: 200;
    min-width: 140px; background: #fff; border: 1px solid var(--border); border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.12); overflow: hidden; padding: 6px;
    animation: menuFadeIn .18s ease;
  }
  .sort-option {
    padding: 8px 12px; border-radius: 8px; font-size: 13px; cursor: pointer;
    color: var(--text2); transition: all .15s; white-space: nowrap;
  }
  .sort-option:hover { background: #f3f4f6; color: var(--text); }
  .sort-option.active { background: rgba(37,99,235,0.08); color: var(--primary); font-weight: 500; }
  @keyframes menuFadeIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .dark .sort-trigger { background: var(--card); border-color: var(--border); color: var(--text); }
  .dark .sort-trigger:hover { background: var(--bg); }
  .dark .sort-menu { background: var(--card); border-color: var(--border); }
  .dark .sort-option:hover { background: rgba(255,255,255,0.06); color: var(--text); }
  .dark .sort-option.active { background: rgba(37,99,235,0.15); color: #93c5fd; }
  .filter-chip {
    padding: 6px 14px; border-radius: 20px; font-size: 13px; cursor: pointer;
    border: 1px solid var(--border); background: #fff; color: var(--text2);
    transition: all .2s; user-select: none;
  }
  .filter-chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }
  .filter-chip:hover:not(.active) { background: #f3f4f6; }

  /* Stats */
  .stats { display: flex; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
  .stat-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 16px 20px; flex: 1; min-width: 120px; box-shadow: var(--shadow);
    transition: transform .15s, box-shadow .15s;
  }
  .stat-card:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
  .stat-label { font-size: 12px; color: var(--text2); margin-bottom: 4px; }
  .stat-value { font-size: 22px; font-weight: 700; }
  .stat-card.total .stat-value { color: var(--primary); }
  .stat-card.pending .stat-value { color: var(--warning); }
  .stat-card.solved .stat-value { color: var(--success); }
  .stat-card.archived .stat-value { color: var(--text2); }
  .stat-card.active { border-color: var(--primary); background: rgba(37,99,235,0.04); box-shadow: 0 0 0 2px rgba(37,99,235,0.15); }
  .dark .stat-card.active { background: rgba(96,165,250,0.08); }

  /* Filter section divider */
  .filter-section-title {
    display: block; font-size: 12px; font-weight: 500; color: var(--text2);
    margin: 4px 0 8px; text-transform: uppercase; letter-spacing: 0.5px;
  }
  .filter-section { margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px dashed var(--border); }
  .filter-section:last-of-type { border-bottom: none; padding-bottom: 0; }

  /* Card list */
  .card-list { display: flex; flex-direction: column; gap: 14px; }
  .issue-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 18px 20px; box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s;
    animation: cardFadeIn .3s ease;
  }
  @keyframes cardFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .issue-card:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,0,0,0.08); }
  .issue-card.pinned { border-left: 4px solid var(--warning); }
  .issue-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 10px; }
  .issue-header.collapsible { cursor: pointer; }
  .issue-header.collapsible:hover { background: rgba(37,99,235,0.02); }
  .dark .issue-header.collapsible:hover { background: rgba(96,165,250,0.04); }
  .issue-preview {
    font-size: 13px; color: var(--text2); padding: 4px 0 8px; line-height: 1.5;
    display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical;
    overflow: hidden; text-overflow: ellipsis; margin-bottom: 8px;
  }
  .issue-title-wrap { display: flex; align-items: center; gap: 8px; flex: 1; }
  .issue-title { font-size: 16px; font-weight: 600; flex: 1; line-height: 1.4; display: flex; align-items: center; gap: 8px; }
  .expand-icon { font-size: 12px; color: var(--text2); font-weight: 400; flex-shrink: 0; }
  .star-btn {
    background: none; border: none; cursor: pointer; font-size: 18px; line-height: 1;
    color: #d1d5db; transition: color .2s; padding: 2px;
  }
  .star-btn:hover { color: var(--warning); }
  .star-btn.active { color: var(--warning); }
  .issue-badges { display: flex; gap: 6px; flex-shrink: 0; }
  .badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 10px; border-radius: 12px; font-size: 12px; font-weight: 500;
  }
  .badge-category { background: #eff6ff; color: var(--primary); }
  .badge-status-pending { background: #fffbeb; color: #b45309; }
  .badge-status-solved { background: #ecfdf5; color: #047857; }
  .badge-status-archived { background: #f3f4f6; color: var(--text2); }
  .issue-desc { font-size: 14px; color: var(--text2); margin-bottom: 12px; line-height: 1.6; }
  .issue-desc p { margin-bottom: 6px; }
  .issue-desc p:last-child { margin-bottom: 0; }
  .issue-desc code {
    background: #f3f4f6; padding: 2px 5px; border-radius: 4px; font-size: 12px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; color: #c7254e;
  }
  .issue-desc pre {
    background: #f8f9fa; padding: 10px 14px; border-radius: 8px; overflow-x: auto;
    font-size: 13px; line-height: 1.5; border: 1px solid var(--border); margin: 8px 0;
  }
  .issue-desc pre code { background: none; padding: 0; color: var(--text); font-size: 13px; }
  .issue-desc strong { font-weight: 600; color: var(--text); }
  .issue-desc em { font-style: italic; }
  .issue-desc blockquote {
    border-left: 3px solid var(--primary); padding: 6px 12px; margin: 8px 0;
    background: #f8fafc; color: var(--text2); border-radius: 0 6px 6px 0;
  }
  .issue-desc ul { margin: 6px 0; padding-left: 20px; }
  .issue-desc li { margin-bottom: 2px; }
  .issue-solution {
    background: #f0fdf4; border-left: 3px solid var(--success); padding: 10px 14px;
    border-radius: 0 8px 8px 0; font-size: 13px; color: #065f46; margin-bottom: 12px; line-height: 1.5;
  }
  .issue-solution p { margin-bottom: 6px; }
  .issue-solution p:last-child { margin-bottom: 0; }
  .issue-solution code { background: #d1fae5; padding: 2px 5px; border-radius: 4px; font-size: 12px; font-family: monospace; }
  .issue-solution pre { background: #ecfdf5; padding: 10px 14px; border-radius: 8px; overflow-x: auto; border: 1px solid #a7f3d0; margin: 8px 0; }
  .issue-solution pre code { background: none; padding: 0; font-size: 13px; }
  .issue-solution strong { color: #065f46; }
  .issue-footer { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--text2); flex-wrap: wrap; gap: 8px; }
  .issue-actions { display: flex; gap: 8px; }
  .issue-actions button { padding: 4px 10px; font-size: 12px; }
  .related-links { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; margin-bottom: 10px; align-items: center; padding: 8px 0; border-top: 1px dashed var(--border); border-bottom: 1px dashed var(--border); }
  .related-links span { font-size: 12px; color: var(--text2); }
  .related-link {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 12px; color: var(--primary); background: #eff6ff;
    padding: 3px 10px; border-radius: 12px; text-decoration: none;
    border: 1px solid #dbeafe; cursor: pointer; transition: all .2s;
  }
  .related-link:hover { background: #dbeafe; }
  .empty-state { text-align: center; padding: 60px 20px; color: var(--text2); }
  .empty-state svg { width: 72px; height: 72px; margin-bottom: 16px; color: #d1d5db; }
  .empty-state h3 { font-size: 16px; margin-bottom: 6px; color: var(--text); }

  /* Pagination */
  .pagination { display: flex; align-items: center; justify-content: center; gap: 6px; margin-top: 24px; flex-wrap: wrap; }
  .page-info { font-size: 13px; color: var(--text2); margin: 0 8px; }
  .page-btn {
    min-width: 36px; height: 36px; border: 1px solid var(--border); border-radius: 8px;
    background: #fff; color: var(--text); font-size: 13px; cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
    transition: all .2s; padding: 0 10px;
  }
  .page-btn:hover:not(:disabled):not(.active) { background: #f3f4f6; border-color: #d1d5db; }
  .page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); font-weight: 600; }
  .page-btn:disabled { opacity: 0.35; cursor: not-allowed; }
  .page-ellipsis { min-width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; color: var(--text2); font-size: 14px; }

  /* Modal */
  .modal-overlay {
    position: fixed; inset: 0; background: var(--overlay-bg);
    backdrop-filter: blur(var(--overlay-blur)); -webkit-backdrop-filter: blur(var(--overlay-blur));
    display: none; align-items: center; justify-content: center; z-index: 1000; padding: 16px;
    opacity: 0; transition: opacity .2s;
  }
  .modal-overlay.active { display: flex; animation: overlayFadeIn .2s ease forwards; }
  @keyframes overlayFadeIn { to { opacity: 1; } }
  .modal {
    background: #fff; border-radius: var(--radius-modal); width: 100%; max-width: 520px;
    max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-modal);
    transform: translateY(-20px) scale(0.96); opacity: 0; transition: transform .25s, opacity .25s;
  }
  .modal-overlay.active .modal { transform: translateY(0) scale(1); opacity: 1; }
  .modal-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 24px; border-bottom: 1px solid var(--border);
  }
  .modal-header h2 { font-size: 18px; }
  .modal-body { padding: 20px 24px; }
  .form-group { margin-bottom: 16px; }
  .form-group label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; color: #374151; }
  .form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 10px;
    font-size: 14px; outline: none; transition: border .2s; font-family: inherit;
  }
  .form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--primary); }
  .form-group textarea { resize: vertical; min-height: 80px; }
  .form-group label { display: flex; justify-content: space-between; align-items: center; }
  .form-group .char-count { font-size: 11px; font-weight: 400; color: var(--text2); }
  .form-group .char-count.over { color: var(--warning); }
  .form-row { display: flex; gap: 12px; }
  .form-row .form-group { flex: 1; }
  .modal-footer {
    display: flex; justify-content: flex-end; gap: 10px;
    padding: 16px 24px; border-top: 1px solid var(--border); background: #fafafa;
    border-radius: 0 0 16px 16px;
  }
  .related-select { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
  .related-tag {
    display: inline-flex; align-items: center; gap: 4px;
    background: #eff6ff; color: var(--primary); border: 1px solid #dbeafe;
    padding: 4px 10px; border-radius: 12px; font-size: 12px; cursor: pointer;
  }
  .related-tag:hover { background: #dbeafe; }
  .related-tag .x { margin-left: 4px; font-weight: 700; }
  .related-select-wrapper { position: relative; }
  .related-search-box {
    display: flex; align-items: center;
    border: 1px solid var(--border); border-radius: 8px; padding: 0 12px;
    background: #fff; cursor: pointer; min-height: 38px;
  }
  .related-search-box input {
    flex: 1; border: none; outline: none; padding: 8px 0; font-size: 13px;
    background: transparent;
  }
  .related-arrow { font-size: 10px; color: var(--text2); margin-left: 6px; transition: transform .2s; }
  .related-arrow.open { transform: rotate(180deg); }
  .related-dropdown {
    position: absolute; top: calc(100% + 4px); left: 0; right: 0;
    max-height: 200px; overflow-y: auto;
    background: #fff; border: 1px solid var(--border); border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08); z-index: 200;
  }
  .related-option { padding: 8px 12px; font-size: 13px; cursor: pointer; border-bottom: 1px solid #f3f4f6; }
  .related-option:last-child { border-bottom: none; }
  .related-option:hover { background: #f9fafb; }
  .related-empty { padding: 12px; color: var(--text2); font-size: 13px; text-align: center; }

  /* Custom Field Select (replaces <select> in form) */
  .field-select { position: relative; }
  .field-select-trigger {
    display: flex; align-items: center; gap: 8px;
    width: 100%; padding: 9px 14px 9px 12px;
    border: 1px solid var(--border); border-radius: 10px;
    background: #fff; color: var(--text);
    font-size: 14px; font-family: inherit;
    cursor: pointer; outline: none;
    transition: border-color .2s, box-shadow .2s, background .2s;
    user-select: none; text-align: left;
  }
  .field-select-trigger:hover { border-color: #9ca3af; background: #fafbfc; }
  .field-select-trigger:focus-visible,
  .field-select-trigger.open { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
  .field-select-label {
    display: inline-flex; align-items: center; gap: 8px;
    flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  }
  .field-select-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 22px; height: 22px; border-radius: 6px;
    background: rgba(37,99,235,0.08); font-size: 13px; line-height: 1;
    flex-shrink: 0;
  }
  .field-select-trigger .field-select-arrow {
    width: 14px; height: 14px; color: var(--text2);
    transition: transform .2s, color .2s; flex-shrink: 0;
  }
  .field-select-trigger.open .field-select-arrow { transform: rotate(180deg); color: var(--primary); }
  .field-select-menu {
    position: absolute; top: calc(100% + 6px); left: 0; right: 0;
    background: #fff; border: 1px solid var(--border); border-radius: 12px;
    box-shadow: 0 12px 36px rgba(0,0,0,0.14), 0 2px 6px rgba(0,0,0,0.06);
    padding: 6px; z-index: 100;
    animation: fieldSelectFadeIn .18s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 260px; overflow-y: auto;
  }
  @keyframes fieldSelectFadeIn {
    from { opacity: 0; transform: translateY(-6px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }
  .field-select-option {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 10px 8px 8px; border-radius: 8px;
    font-size: 14px; cursor: pointer; color: var(--text);
    transition: background .15s, color .15s, transform .12s;
    position: relative;
  }
  .field-select-option:hover {
    background: linear-gradient(135deg, rgba(37,99,235,0.06) 0%, rgba(20,184,166,0.04) 100%);
    transform: translateX(2px);
  }
  .field-select-option:active { transform: translateX(2px) scale(0.98); }
  .field-select-option.active {
    background: linear-gradient(135deg, rgba(37,99,235,0.10) 0%, rgba(20,184,166,0.06) 100%);
    color: var(--primary); font-weight: 500;
  }
  .field-select-option .field-select-icon {
    background: rgba(37,99,235,0.08);
  }
  .field-select-option.active .field-select-icon {
    background: rgba(37,99,235,0.18);
  }
  .field-select-text { flex: 1; }
  .field-select-check {
    display: inline-flex; align-items: center; justify-content: center;
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--primary); color: #fff; font-size: 11px; line-height: 1;
    animation: fieldSelectCheckPop .25s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  @keyframes fieldSelectCheckPop {
    from { transform: scale(0); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
  }

  /* Dark mode for Field Select */
  .dark .field-select-trigger { background: #111827; border-color: var(--border); color: var(--text); }
  .dark .field-select-trigger:hover { background: #1f2937; border-color: #4b5563; }
  .dark .field-select-trigger.open { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,0.20); }
  .dark .field-select-trigger .field-select-arrow { color: #9ca3af; }
  .dark .field-select-trigger.open .field-select-arrow { color: #93c5fd; }
  .dark .field-select-icon { background: rgba(59,130,246,0.16); }
  .dark .field-select-menu {
    background: #1f2937; border-color: var(--border);
    box-shadow: 0 12px 36px rgba(0,0,0,0.5), 0 2px 6px rgba(0,0,0,0.3);
  }
  .dark .field-select-option { color: var(--text); }
  .dark .field-select-option:hover {
    background: linear-gradient(135deg, rgba(59,130,246,0.10) 0%, rgba(20,184,166,0.06) 100%);
  }
  .dark .field-select-option.active {
    background: linear-gradient(135deg, rgba(59,130,246,0.18) 0%, rgba(20,184,166,0.10) 100%);
    color: #93c5fd;
  }
  .dark .field-select-check { background: var(--primary); color: #fff; }

  /* Markdown Editor Tabs */
  .md-editor-tabs { display: flex; gap: 4px; margin-bottom: 6px; }
  .md-tab {
    padding: 4px 12px; font-size: 12px; border: 1px solid var(--border); border-radius: 6px;
    background: #fff; color: var(--text2); cursor: pointer; transition: all .15s;
  }
  .md-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
  .md-tab:hover:not(.active) { background: #f3f4f6; }
  .md-preview {
    min-height: 80px; padding: 10px 14px; border: 1px solid var(--border); border-radius: 10px;
    background: #fafafa; font-size: 14px; line-height: 1.6; color: var(--text);
  }
  .md-preview:empty::before { content: '预览将在这里显示...'; color: var(--text2); }
  .md-preview p { margin-bottom: 6px; }
  .md-preview pre { background: #f8f9fa; padding: 10px 14px; border-radius: 8px; overflow-x: auto; font-size: 13px; border: 1px solid var(--border); margin: 8px 0; }
  .md-preview code { background: #f3f4f6; padding: 2px 5px; border-radius: 4px; font-size: 12px; font-family: monospace; }
  .md-preview blockquote { border-left: 3px solid var(--primary); padding: 6px 12px; margin: 8px 0; background: #f8fafc; border-radius: 0 6px 6px 0; }
  .dark .md-tab { background: var(--card); border-color: var(--border); }
  .dark .md-tab:hover:not(.active) { background: #374151; }
  .dark .md-preview { background: #111827; border-color: var(--border); }
  .dark .md-preview pre { background: #1f2937; }
  .dark .md-preview code { background: #374151; }
  .dark .md-preview blockquote { background: #1e3a5f; }

  /* Image paste & resize */
  .md-image-wrap {
    position: relative; display: inline-block; margin: 8px 0;
    border-radius: 8px; overflow: hidden; border: 1px solid var(--border);
    max-width: 100%;
  }
  .md-image-wrap img {
    display: block; max-width: 100%; height: auto;
    transition: width .25s ease;
  }
  .md-image-size-btns {
    position: absolute; top: 6px; right: 6px; display: flex; gap: 3px;
    opacity: 0; transition: opacity .2s;
  }
  .md-image-wrap:hover .md-image-size-btns { opacity: 1; }
  .md-image-sz {
    background: rgba(0,0,0,0.55); color: #fff; border: none;
    border-radius: 4px; padding: 2px 7px; font-size: 11px;
    cursor: pointer; transition: background .15s; line-height: 1.5;
  }
  .md-image-sz:hover { background: rgba(0,0,0,0.75); }
  .image-upload-status {
    display: flex; align-items: center; gap: 8px; padding: 10px 14px;
    background: #eff6ff; border: 1px solid #dbeafe; border-radius: 10px;
    margin-bottom: 16px; font-size: 13px; color: var(--primary);
  }
  .image-upload-status .mini-spinner {
    width: 16px; height: 16px; border: 2px solid #dbeafe;
    border-top-color: var(--primary); border-radius: 50%;
    animation: spin 0.6s linear infinite;
  }

  /* Loading */
  .loading-overlay {
    position: fixed; inset: 0; background: rgba(255,255,255,0.6);
    display: none; align-items: center; justify-content: center; z-index: 3000;
  }
  .loading-overlay.active { display: flex; }
  .spinner {
    width: 32px; height: 32px; border: 3px solid var(--border);
    border-top-color: var(--primary); border-radius: 50%;
    animation: spin 0.8s linear infinite;
  }
  @keyframes spin { to { transform: rotate(360deg); } }

  /* Skeleton loading */
  .skeleton-list { display: flex; flex-direction: column; gap: 14px; }
  .skeleton-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 18px 20px; box-shadow: var(--shadow);
  }
  .skeleton-line {
    background: linear-gradient(90deg, #e5e7eb 0%, #f3f4f6 50%, #e5e7eb 100%);
    background-size: 200% 100%;
    border-radius: 4px; height: 14px; margin-bottom: 8px;
    animation: skeletonShine 1.5s ease-in-out infinite;
  }
  .skeleton-line.title { height: 18px; width: 60%; }
  .skeleton-line.short { width: 30%; }
  .skeleton-line.long { width: 95%; }
  @keyframes skeletonShine {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
  }
  .dark .skeleton-line {
    background: linear-gradient(90deg, #374151 0%, #4b5563 50%, #374151 100%);
    background-size: 200% 100%;
  }

  /* Session warning */
  .session-warning {
    display: none; position: fixed; top: 0; left: 0; right: 0; z-index: 5000;
    background: #fef3c7; color: #92400e; padding: 10px 16px; font-size: 13px;
    text-align: center; border-bottom: 1px solid #f59e0b; align-items: center;
    justify-content: center; gap: 12px;
  }
  .session-warning.show { display: flex; }
  .session-warning .btn-stay {
    padding: 4px 14px; border-radius: 6px; border: 1px solid #b45309;
    background: #fff; color: #b45309; font-size: 12px; font-weight: 600; cursor: pointer;
  }
  .session-warning .btn-stay:hover { background: #b45309; color: #fff; }

  /* Toast */
  .toast {
    position: fixed; top: 16px; left: 50%; transform: translateX(-50%) translateY(-20px);
    z-index: 6000; padding: 10px 18px; border-radius: 10px; font-size: 13px;
    color: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
    max-width: 90vw; text-align: center; cursor: default;
  }
  .toast.clickable { cursor: pointer; }
  .toast.error { background: var(--danger); }
  .toast.success { background: var(--success); }
  .toast.info { background: var(--primary); }
  .toast.show { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }

  /* 离线提示条 */
  .offline-bar {
    background: var(--warning); color: #1f2937; text-align: center;
    font-size: 13px; font-weight: 500; padding: 8px 12px;
    border-radius: 10px; margin-bottom: 16px;
    display: flex; align-items: center; justify-content: center; gap: 6px;
  }

  /* 正文区图片上传按钮（点击上传，提升拖拽/粘贴的可发现性） */
  .img-upload-btn {
    display: inline-flex; align-items: center; gap: 4px;
    margin-top: 8px; padding: 6px 12px; font-size: 13px; font-weight: 500;
    color: var(--primary); background: rgba(37,99,235,0.08);
    border: 1px solid rgba(37,99,235,0.25); border-radius: 8px; cursor: pointer;
    transition: background .15s, border-color .15s;
  }
  .img-upload-btn:hover { background: rgba(37,99,235,0.14); border-color: var(--primary); }
  .img-upload-btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

  /* Confirm Dialog (Premium) */
  .confirm-overlay {
    position: fixed; inset: 0; z-index: 5500; padding: 16px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(8px) saturate(140%);
    -webkit-backdrop-filter: blur(8px) saturate(140%);
    animation: confirm-fade-in 0.18s ease-out;
  }
  @keyframes confirm-fade-in { from { opacity: 0; } to { opacity: 1; } }
  @keyframes confirm-pop-in {
    from { opacity: 0; transform: translateY(8px) scale(0.96); }
    to   { opacity: 1; transform: translateY(0)    scale(1); }
  }
  @keyframes confirm-pulse {
    0%   { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5); }
    70%  { box-shadow: 0 0 0 14px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
  }
  .confirm-box {
    background: var(--card, #fff); color: var(--text, #1f2937);
    border: 1px solid var(--border, rgba(0,0,0,0.06));
    border-radius: 18px; padding: 28px 24px 22px;
    max-width: 380px; width: 100%;
    box-shadow:
      0 1px 2px rgba(15, 23, 42, 0.04),
      0 10px 30px rgba(15, 23, 42, 0.18),
      0 30px 80px -20px rgba(15, 23, 42, 0.25);
    text-align: center;
    animation: confirm-pop-in 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .confirm-icon {
    width: 56px; height: 56px; border-radius: 50%;
    margin: 0 auto 16px;
    display: flex; align-items: center; justify-content: center;
    font-size: 28px; line-height: 1; color: #fff;
    background: linear-gradient(135deg, #fb7185 0%, #ef4444 100%);
    box-shadow: 0 8px 20px -4px rgba(239, 68, 68, 0.45);
    animation: confirm-pulse 1.8s ease-out infinite;
  }
  .confirm-box.tone-warning .confirm-icon {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    box-shadow: 0 8px 20px -4px rgba(245, 158, 11, 0.45);
    animation: none;
  }
  .confirm-box.tone-info .confirm-icon {
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    box-shadow: 0 8px 20px -4px rgba(59, 130, 246, 0.45);
    animation: none;
  }
  .confirm-title {
    font-size: 16px; font-weight: 600; margin: 0 0 6px;
    color: var(--text, #1f2937); letter-spacing: -0.2px;
  }
  .confirm-msg {
    font-size: 14px; color: var(--text2, #6b7280);
    margin: 0 0 22px; line-height: 1.55;
  }
  .confirm-btns {
    display: flex; gap: 10px; justify-content: center;
  }
  .confirm-btns .btn { min-width: 88px; }
  .confirm-box .btn-danger-solid {
    background: linear-gradient(135deg, #fb7185 0%, #ef4444 100%);
    color: #fff; border: none;
    box-shadow: 0 4px 12px -2px rgba(239, 68, 68, 0.4);
  }
  .confirm-box .btn-danger-solid:hover {
    background: linear-gradient(135deg, #f43f5e 0%, #dc2626 100%);
    box-shadow: 0 6px 18px -2px rgba(239, 68, 68, 0.5);
  }
  .confirm-box .btn-warning-solid {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: #fff; border: none;
    box-shadow: 0 4px 12px -2px rgba(245, 158, 11, 0.4);
  }
  .confirm-box .btn-warning-solid:hover {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  }
  .dark .confirm-overlay { background: rgba(0, 0, 0, 0.6); }
  .dark .confirm-box {
    background: #1f2937; border-color: #374151;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5), 0 30px 80px -20px rgba(0,0,0,0.6);
  }

  /* Search Clear */
  .search-clear {
    position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
    background: none; border: none; cursor: pointer; color: var(--text2);
    font-size: 16px; line-height: 1; padding: 2px 4px; border-radius: 4px;
    transition: color .15s, background .15s;
  }
  .search-clear:hover { color: var(--danger); background: #fef2f2; }

  /* Drag Drop */
  .textarea-drop-zone { position: relative; }
  .textarea-drop-zone textarea { width: 100%; }
  .drop-overlay {
    position: absolute; inset: 0; background: rgba(37,99,235,0.08);
    border: 2px dashed var(--primary); border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: var(--primary); font-size: 14px; font-weight: 500;
    z-index: 10; pointer-events: none;
  }

  /* Dark mode */
  .dark { --bg: #111827; --card: #1f2937; --text: #f3f4f6; --text2: #9ca3af; --border: #374151; --primary: #60a5fa; --primary2: #3b82f6; --success: #34d399; --warning: #fbbf24; --danger: #f87171; --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 4px 12px rgba(0,0,0,0.2); }
  .dark body, .dark .login-overlay { background: var(--bg); }
  .dark .btn-outline { background: var(--card); border-color: var(--border); color: var(--text); }
  .dark .btn-outline:hover { background: #374151; }
  .dark .btn-danger { background: #1f2937; color: var(--danger); border-color: #7f1d1d; }
  .dark .btn-danger:hover { background: #374151; }
  .dark .btn-success { background: #064e3b; color: #6ee7b7; border-color: #047857; }
  .dark .btn-success:hover { background: #065f46; }
  .dark .search-box input { background: var(--card); border-color: var(--border); color: var(--text); }
  .dark .search-box input::placeholder { color: var(--text2); }
  .dark .filter-chip { background: var(--card); border-color: var(--border); color: var(--text2); }
  .dark .filter-chip:hover:not(.active) { background: #374151; }

  /* Tags */
  .hint { font-size: 12px; font-weight: 400; color: var(--text2); }
  .tag-input-wrap {
    display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
    border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px;
    background: #fff; transition: border-color .2s, box-shadow .2s;
  }
  .tag-input-wrap.focused { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
  .tag-chip {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 10px; border-radius: 14px; font-size: 12.5px; line-height: 1.6;
    background: rgba(37,99,235,0.1); color: var(--primary); border: 1px solid rgba(37,99,235,0.2);
    max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  }
  .tag-chip.small { padding: 2px 9px; font-size: 12px; }
  .tag-chip.suggest { cursor: pointer; background: #f3f4f6; color: var(--text2); border-color: var(--border); }
  .tag-chip.suggest:hover { background: #e5e7eb; }
  .tag-remove {
    border: none; background: transparent; color: inherit; cursor: pointer;
    font-size: 15px; line-height: 1; padding: 0; margin-left: 2px; opacity: .65;
  }
  .tag-remove:hover { opacity: 1; }
  .tag-input {
    flex: 1; min-width: 120px; border: none; outline: none; background: transparent;
    font-size: 13.5px; color: var(--text); padding: 3px;
  }
  .tag-suggest { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
  .tag-suggest-label { font-size: 12px; color: var(--text2); }
  .issue-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
  /* 批量操作栏 */
  .batch-bar {
    display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
    background: linear-gradient(135deg, rgba(37,99,235,0.06), rgba(59,130,246,0.10));
    border: 1px solid rgba(37,99,235,0.25); border-radius: 14px;
    padding: 12px 16px; margin-bottom: 18px;
  }
  .batch-check {
    display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
    font-size: 13.5px; color: var(--text); user-select: none;
  }
  .batch-check.card-check { /* 卡片内复选框，避免占据过多空间 */ }
  .batch-check input { width: 17px; height: 17px; accent-color: var(--primary); cursor: pointer; }
  .batch-count { font-size: 13px; color: var(--primary); font-weight: 600; }
  .batch-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-left: auto; }
  .batch-group { display: inline-flex; align-items: center; gap: 6px; }
  .batch-label { font-size: 12.5px; color: var(--text2); }
  .batch-tag-input {
    width: 92px; padding: 4px 9px; font-size: 12.5px; border-radius: 7px;
    border: 1px solid var(--border); background: #fff; color: var(--text); outline: none;
  }
  .batch-tag-input:focus { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(37,99,235,0.15); }
  .dark .tag-input-wrap { background: #1f2937; }
  .dark .tag-chip.suggest { background: #374151; color: #cbd5e1; }
  .dark .tag-chip.suggest:hover { background: #4b5563; }
  .dark .stat-card { background: var(--card); border-color: var(--border); }
  .dark .batch-bar { background: linear-gradient(135deg, rgba(96,165,250,0.10), rgba(59,130,246,0.16)); border-color: rgba(96,165,250,0.35); }

  /* 回收站入口与提示 */
  .trash-chip { color: var(--text2); }
  .trash-chip.active { color: var(--danger); border-color: var(--danger); background: rgba(239,68,68,0.06); }
  .trash-badge { display: inline-flex; align-items: center; justify-content: center; min-width: 18px; height: 18px; margin-left: 6px; padding: 0 5px; border-radius: 9px; background: var(--danger); color: #fff; font-size: 11px; font-weight: 600; }
  .trash-hint { margin: 0 0 16px; padding: 12px 16px; border-radius: 12px; background: rgba(239,68,68,0.06); border: 1px solid rgba(239,68,68,0.2); color: var(--text); font-size: 13px; }
  .dark .trash-hint { background: rgba(239,68,68,0.12); border-color: rgba(239,68,68,0.3); }
  /* 搜索命中高亮 */
  mark { background: #fde68a; color: #1f2937; padding: 0 2px; border-radius: 3px; }
  .dark mark { background: #f59e0b; color: #1f2937; }
  .dark .batch-tag-input { background: #111827; border-color: var(--border); color: var(--text); }
  .dark .btn-ghost:hover { background: rgba(255,255,255,0.06); }
  .dark .btn-outline.active { background: var(--primary); border-color: var(--primary); color: #fff; }
  .dark .issue-card { background: var(--card); border-color: var(--border); }
  .dark .badge-category { background: #1e3a5f; color: var(--primary); }
  .dark .badge-status-pending { background: #422006; color: #fbbf24; }
  .dark .badge-status-solved { background: #064e3b; color: #34d399; }
  .dark .badge-status-archived { background: #374151; color: var(--text2); }
  .dark .issue-desc { color: var(--text2); }
  .dark .issue-desc code { background: #374151; color: #fb7185; }
  .dark .issue-desc pre { background: #111827; border-color: var(--border); }
  .dark .issue-desc pre code { color: var(--text); }
  .dark .issue-solution { background: #064e3b; border-left-color: #34d399; color: #6ee7b7; }
  .dark .issue-solution code { background: #065f46; }
  .dark .issue-solution pre { background: #064e3b; border-color: #34d399; }
  .dark .modal { background: var(--card); }
  .dark .modal-header { border-color: var(--border); }
  .dark .modal-body { background: var(--card); }
  .dark .modal-footer { background: #111827; border-color: var(--border); }
  .dark .form-group input, .dark .form-group textarea, .dark .form-group select { background: #111827; border-color: var(--border); color: var(--text); }
  .dark .form-group label { color: var(--text2); }
  .dark .login-rightPanel {
    background: radial-gradient(circle at 20% 0%, rgba(30,41,59,0.9), transparent 35%), radial-gradient(circle at 90% 80%, rgba(15,23,42,0.9), transparent 40%), linear-gradient(160deg, #0f172a 0%, #1e293b 52%, #0f172a 100%);
  }
  .dark .login-formWrapper { background: rgba(30,41,59,0.9); border-color: rgba(148,163,184,0.2); box-shadow: 0 24px 50px rgba(0,0,0,0.4); }
  .dark .login-formTitle { color: #f1f5f9; }
  .dark .login-formSubtitle { color: #94a3b8; }
  .dark .login-fieldLabel { color: #cbd5e1; }
  .dark .login-inputWrapper { background: rgba(15,23,42,0.8); border-color: #334155; }
  .dark .login-inputWrapper:hover { background: #0f172a; }
  .dark .login-inputWrapper:focus-within { background: #0f172a; box-shadow: 0 0 0 4px rgba(20,184,166,0.2); }
  .dark .login-inputWrapper input { color: #e2e8f0; }
  .dark .login-inputWrapper input::placeholder { color: #64748b; }
  .dark .login-panelTag { color: #5eead4; }
  .dark .login-errorBox { background: #1f2937; border-color: #7f1d1d; color: var(--danger); }
  .dark .confirm-box { background: var(--card); }
  .dark .confirm-box p { color: var(--text); }
  .dark .page-btn { background: var(--card); border-color: var(--border); color: var(--text); }
  .dark .page-btn:hover:not(:disabled):not(.active) { background: #374151; }
  .dark .related-link { background: #1e3a5f; border-color: #1e3a5f; color: var(--primary); }
  .dark .related-tag { background: #1e3a5f; border-color: #1e3a5f; color: var(--primary); }
  .dark .related-search-box { background: #111827; border-color: var(--border); }
  .dark .related-search-box input { color: var(--text); }
  .dark .related-dropdown { background: var(--card); border-color: var(--border); }
  .dark .related-option { border-bottom-color: var(--border); }
  .dark .related-option:hover { background: #374151; }
  .dark .loading-overlay { background: rgba(17,24,39,0.6); }
  .dark .image-upload-status { background: #1e3a5f; border-color: #1e3a5f; }
  .dark .session-warning { background: #422006; color: #fbbf24; border-color: #fbbf24; }
  .dark .md-image-wrap { border-color: var(--border); }
  .dark .filter-section { border-bottom-color: var(--border); }
  .dark .related-links { border-top-color: var(--border); border-bottom-color: var(--border); }
  .dark .session-warning .btn-stay { background: transparent; color: #fbbf24; border-color: #fbbf24; }
  .dark .session-warning .btn-stay:hover { background: #fbbf24; color: #111827; }

  @media (max-width: 600px) {
    .container { padding: 16px 12px; }
    .toolbar { gap: 8px; }
    .issue-header { flex-direction: column; }
    .issue-badges { flex-wrap: wrap; }
    .form-row { flex-direction: column; gap: 0; }
    .modal { max-height: 95vh; }
    .issue-actions { width: 100%; justify-content: flex-end; }
    .issue-actions button { flex: 1; min-width: 0; padding: 6px 6px; }
    .issue-footer { flex-direction: column; align-items: flex-start; }
  }
  @media (max-width: 480px) {
    .header-actions-secondary { display: none; }
    .header-user-name { display: none; }
  }

  /* Error Log Modal */
  .errorlog-overlay { position: fixed; inset: 0; background: var(--overlay-bg); backdrop-filter: blur(var(--overlay-blur)); -webkit-backdrop-filter: blur(var(--overlay-blur)); display: flex; align-items: center; justify-content: center; z-index: 5600; padding: 16px; animation: overlayFadeIn .2s ease forwards; }
  .errorlog-box { background: #fff; border-radius: var(--radius-modal); padding: 20px; max-width: 640px; width: 100%; max-height: 80vh; display: flex; flex-direction: column; box-shadow: var(--shadow-modal); animation: confirm-pop-in .22s cubic-bezier(0.16,1,0.3,1); }
  .dark .errorlog-box { background: var(--card); }
  .errorlog-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
  .errorlog-head h3 { margin: 0; font-size: 17px; color: var(--text); }
  .errorlog-loading, .errorlog-empty { padding: 30px; text-align: center; color: var(--text); opacity: 0.7; }
  .errorlog-list { overflow-y: auto; display: flex; flex-direction: column; gap: 10px; padding-right: 4px; }
  .errorlog-item { border: 1px solid var(--border, #eee); border-radius: 10px; padding: 12px; background: rgba(0,0,0,0.02); }
  .dark .errorlog-item { background: rgba(255,255,255,0.03); border-color: var(--border); }
  .errorlog-item.error { border-left: 3px solid #e5484d; }
  .errorlog-item.warn { border-left: 3px solid #f5a623; }
  .errorlog-meta { display: flex; gap: 10px; align-items: center; margin-bottom: 6px; font-size: 12px; opacity: 0.7; }
  .errorlog-level { text-transform: uppercase; font-weight: 600; }
  .errorlog-msg { font-size: 14px; color: var(--text); white-space: pre-wrap; word-break: break-word; }
  .errorlog-stack { margin-top: 8px; font-size: 12px; font-family: ui-monospace, monospace; color: var(--text); opacity: 0.65; white-space: pre-wrap; word-break: break-word; max-height: 160px; overflow-y: auto; }

  @media (max-width: 480px) {
    .errorlog-box { padding: 16px; max-width: 100%; }
  }

  /* 相似问题提示（录入防重复） */
  .similar-hint { margin: -6px 0 14px; padding: 10px 12px; border: 1px solid #fde68a; border-radius: 10px; background: #fffbeb; font-size: 13px; }
  .dark .similar-hint { border-color: #927515; background: rgba(254,240,138,0.08); }
  .similar-hint-head { color: #b45309; font-weight: 600; margin-bottom: 6px; }
  .dark .similar-hint-head { color: #fcd34d; }
  .similar-item { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 6px 8px; border-radius: 8px; cursor: pointer; transition: background 0.15s; }
  .similar-item:hover { background: rgba(180,83,9,0.10); }
  .similar-item-title { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .similar-item-score { flex: none; font-size: 12px; font-weight: 600; color: #b45309; opacity: 0.8; }
  .dark .similar-item-score { color: #fcd34d; }

  /* 上次备份时间指示 */
  .backup-indicator { font-size: 12px; color: var(--text); opacity: 0.55; white-space: nowrap; }

  /* 云端备份弹窗 */
  .backup-overlay { position: fixed; inset: 0; background: var(--overlay-bg); backdrop-filter: blur(var(--overlay-blur)); -webkit-backdrop-filter: blur(var(--overlay-blur)); display: flex; align-items: center; justify-content: center; z-index: 200; padding: 20px; animation: overlayFadeIn .2s ease forwards; }
  .backup-box { width: 420px; max-width: 100%; max-height: 80vh; overflow-y: auto; background: var(--bg, #fff); border: 1px solid var(--border, #eee); border-radius: var(--radius-modal); padding: 22px; box-shadow: var(--shadow-modal); animation: confirm-pop-in .22s cubic-bezier(0.16,1,0.3,1); }
  .dark .backup-box { background: #111827; border-color: var(--border); }
  .backup-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
  .backup-head h3 { margin: 0; font-size: 18px; color: var(--text); }
  .backup-sub { font-size: 13px; color: var(--text); opacity: 0.7; margin: 0 0 14px; line-height: 1.5; }
  .backup-loading, .backup-empty { padding: 24px; text-align: center; color: var(--text); opacity: 0.7; }
  .backup-list { display: flex; flex-direction: column; gap: 8px; }
  .backup-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px; border: 1px solid var(--border, #eee); border-radius: 10px; }
  .dark .backup-item { border-color: var(--border); }
  .backup-time { font-size: 14px; color: var(--text); }
  /* ===== 命令面板 (Cmd/Ctrl+K) ===== */
  .cmd-overlay {
    position: fixed; inset: 0; z-index: 1000;
    background: var(--overlay-bg);
    backdrop-filter: blur(var(--overlay-blur)); -webkit-backdrop-filter: blur(var(--overlay-blur));
    display: flex; align-items: flex-start; justify-content: center;
    padding-top: 12vh;
    animation: cmd-fade 0.15s ease;
  }
  .cmd-panel {
    width: min(640px, 92vw);
    background: rgba(255,255,255,0.94);
    backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid rgba(255,255,255,0.6);
    border-radius: 16px;
    box-shadow: 0 24px 60px rgba(0,0,0,0.28);
    overflow: hidden;
    animation: cmd-pop 0.18s cubic-bezier(0.16,1,0.3,1);
  }
  .dark .cmd-panel { background: rgba(30,41,59,0.95); border-color: rgba(255,255,255,0.14); }
  .cmd-input-wrap { display: flex; align-items: center; gap: 10px; padding: 16px 18px; border-bottom: 1px solid rgba(0,0,0,0.08); }
  .dark .cmd-input-wrap { border-color: rgba(255,255,255,0.12); }
  .cmd-search-icon { font-size: 15px; opacity: 0.6; }
  .cmd-input { flex: 1; border: none; outline: none; background: transparent; font-size: 16px; color: #1f2937; }
  .dark .cmd-input { color: #e5e7eb; }
  .cmd-input::placeholder { color: #9ca3af; }
  .cmd-kbd { font-size: 11px; color: #9ca3af; border: 1px solid #d1d5db; border-radius: 5px; padding: 2px 6px; }
  .cmd-list { max-height: 360px; overflow-y: auto; padding: 8px; }
  .cmd-item { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-radius: 10px; cursor: pointer; gap: 12px; }
  .cmd-item.active { background: rgba(37,99,235,0.12); }
  .dark .cmd-item.active { background: rgba(96,165,250,0.22); }
  .cmd-item-main { display: flex; align-items: center; min-width: 0; }
  .cmd-group { flex: none; font-size: 11px; color: #6b7280; background: rgba(0,0,0,0.05); padding: 2px 8px; border-radius: 6px; margin-right: 10px; }
  .dark .cmd-group { background: rgba(255,255,255,0.12); color: #cbd5e1; }
  .cmd-title { font-size: 14px; font-weight: 500; color: #1f2937; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .dark .cmd-title { color: #e5e7eb; }
  .cmd-hint { flex: none; font-size: 12px; color: #9ca3af; }
  .cmd-empty { padding: 32px; text-align: center; color: #9ca3af; font-size: 14px; }
  .cmd-footer { display: flex; gap: 16px; padding: 10px 16px; border-top: 1px solid rgba(0,0,0,0.06); font-size: 12px; color: #9ca3af; }
  .dark .cmd-footer { border-color: rgba(255,255,255,0.1); }
  @keyframes cmd-fade { from { opacity: 0; } to { opacity: 1; } }
  @keyframes cmd-pop { from { opacity: 0; transform: translateY(-8px) scale(0.98); } to { opacity: 1; transform: none; } }