:root {
            /* ====== Dimensional Layering System (Light Theme) ====== */
            /* Layer 0: Base canvas */
            --layer-0: #eef2f6;
            /* Layer 1: Primary surface (cards) */
            --layer-1: #ffffff;
            /* Layer 2: Raised nested surface */
            --layer-2: #f8fafc;
            /* Layer 3: Sunken (inputs, wells) */
            --layer-3: #f1f5f9;
            /* Layer 4: Elevated (dropdowns, popovers) */
            --layer-4: #ffffff;

            /* Borders */
            --border: #e2e8f0;
            --border-strong: #cbd5e1;
            --border-focus: #6366f1;

            /* Text hierarchy */
            --text-1: #0f172a;
            --text-2: #334155;
            --text-3: #64748b;
            --text-4: #94a3b8;

            /* Brand */
            --primary: #4f46e5;
            --primary-hover: #4338ca;
            --primary-light: #eef2ff;
            --primary-border: #c7d2fe;

            /* Status palettes */
            --success: #059669;
            --success-light: #ecfdf5;
            --success-border: #a7f3d0;
            --warning: #d97706;
            --warning-light: #fffbeb;
            --warning-border: #fde68a;
            --danger: #dc2626;
            --danger-light: #fef2f2;
            --danger-border: #fecaca;
            --info: #0284c7;
            --info-light: #f0f9ff;
            --info-border: #bae6fd;
            --accent: #7c3aed;
            --accent-light: #f5f3ff;

            /* Elevation shadows */
            --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
            --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
            --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
            --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
            --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.06);
            --shadow-2xl: 0 25px 50px -12px rgba(15, 23, 42, 0.18);

            /* Radius scale */
            --r-xs: 5px;
            --r-sm: 6px;
            --r-md: 8px;
            --r-lg: 12px;
            --r-xl: 16px;
            --r-2xl: 20px;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--layer-0);
            background-image:
                radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.04) 0px, transparent 50%),
                radial-gradient(at 98% 1%, rgba(124, 58, 237, 0.04) 0px, transparent 50%);
            background-attachment: fixed;
            min-height: 100vh;
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.5;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        /* ===== App shell ===== */
        .app-shell { min-height: 100vh; display: flex; flex-direction: column; }

        /* ===== Header (Layer 1) ===== */
        .header {
            background: var(--layer-1);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 14px 32px;
            max-width: 1600px;
            margin: 0 auto;
        }
        .header-left { display: flex; flex-direction: column; min-width: 0; }
        .header-center { flex: 1; display: flex; justify-content: center; }
        .header-right { display: flex; gap: 8px; align-items: center; flex-shrink: 0; }

        .header h1 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-1);
            letter-spacing: -0.2px;
            display: flex;
            align-items: baseline;
            gap: 8px;
        }
        .header p {
            font-size: 12px;
            color: var(--text-3);
            margin-top: 2px;
            font-weight: 500;
        }

        .header-status { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: center; }
        .header-status-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            background: var(--layer-2);
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            color: var(--text-2);
        }
        .header-status-item .status-dot {
            width: 7px; height: 7px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.12);
        }
        .header-status-item.warning .status-dot { background: var(--warning); box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.12); }
        .header-status-item.danger .status-dot { background: var(--danger); box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12); }

        /* ===== Main container ===== */
        .container {
            width: 100%;
            max-width: 1600px;
            margin: 0 auto;
            padding: 24px 32px 48px;
            flex: 1;
        }
        @media (min-width: 1920px) { .container { max-width: 1760px; padding-left: 40px; padding-right: 40px; } }

        /* ===== Cards (Layer 1 surface) ===== */
        .card {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--r-xl);
            padding: 24px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-1);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border);
        }
        .title-box {
            color: var(--text-1);
            margin-bottom: 10px;
            align-items: center;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 8px 18px;
            border: 1px solid var(--border);
            border-radius: var(--r-md);
            cursor: pointer;
            font-size: 13px;
            font-weight: 600;
            font-family: inherit;
            transition: all 0.15s ease;
            color: var(--text-2);
            background: var(--layer-1);
            white-space: nowrap;
            line-height: 1.4;
        }
        .btn:hover { background: var(--layer-2); border-color: var(--border-strong); }
        .btn:active { background: var(--layer-3); }
        .btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2); }
        .btn:disabled { opacity: 0.5; cursor: not-allowed; }

        .btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; }

        .btn-success { background: var(--success-light); color: var(--success); border-color: var(--success-border); }
        .btn-success:hover { background: #d1fae5; border-color: var(--success); }

        .btn-danger { background: var(--danger-light); color: var(--danger); border-color: var(--danger-border); }
        .btn-danger:hover { background: #fee2e2; border-color: var(--danger); }

        .btn-warning { background: var(--primary-light); color: var(--primary); border-color: var(--primary-border); }
        .btn-warning:hover { background: #ddd6fe; border-color: var(--primary); }

        .btn-secondary { background: var(--layer-1); color: var(--text-2); border: 1px solid var(--border); }
        .btn-secondary:hover { background: var(--layer-2); color: var(--text-1); border-color: var(--border-strong); }

        .btn-group { display: flex; gap: 10px; flex-wrap: wrap; }

        /* ===== Forms ===== */
        .form-group { margin-bottom: 16px; }
        .form-group label {
            display: block;
            margin-bottom: 6px;
            font-weight: 600;
            color: var(--text-1);
            font-size: 13px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select,
        .form-control {
            width: 100%;
            padding: 9px 12px;
            border: 1px solid var(--border-strong);
            border-radius: var(--r-md);
            font-size: 13px;
            color: var(--text-1);
            background: var(--layer-1);
            transition: all 0.15s ease;
            outline: none;
            font-family: inherit;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder { color: var(--text-4); }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus,
        .form-control:focus {
            border-color: var(--border-focus);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
            background: var(--layer-1);
        }
        .form-group textarea { min-height: 88px; resize: vertical; line-height: 1.6; }
        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 36px;
            cursor: pointer;
        }
        .form-group .view-btn {
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--layer-3);
            border: 1px solid var(--border);
            border-radius: var(--r-sm);
            padding: 4px 9px;
            font-size: 13px;
            cursor: pointer;
            opacity: 0.7;
            transition: all 0.15s;
            z-index: 10;
            color: var(--text-3);
            line-height: 1;
        }
        .form-group .view-btn:hover { opacity: 1; background: var(--layer-2); color: var(--text-1); border-color: var(--border-strong); }
        .form-group input[type="password"],
        .form-group input[type="text"] { padding-right: 40px; }
        .hint { font-size: 12px; color: var(--text-3); margin-top: 6px; line-height: 1.5; }

        /* ===== Grids ===== */
        .grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
        .overview-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
        .grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
        .grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
        .grid-full { display: grid; grid-template-columns: 1fr; gap: 14px; }

        /* ===== Stat boxes (Layer 2 raised tiles) ===== */
        .status-box {
            text-align: center;
            padding: 18px 14px;
            background: var(--layer-2);
            border: 1px solid var(--border);
            border-radius: var(--r-lg);
            transition: all 0.2s ease;
        }
        .status-box:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .status-box.highlight {
            background: var(--primary-light);
            border-color: var(--primary-border);
        }
        .status-box.highlight .value { font-size: 30px; }
        .status-box .value {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1.1;
        }
        /* 统计分类颜色：系统/API类（绿色，匹配API健康率默认色） */
        .stat-system .value { color: var(--success); }
        /* 统计分类颜色：订阅类（琥珀色） */
        .stat-subscribe .value { color: var(--warning); }
        /* 统计分类颜色：用户类（紫色） */
        .stat-user .value { color: var(--primary); }
        .status-box .label { margin-top: 6px; color: var(--text-3); font-size: 12px; font-weight: 500; }

        .api-monitor {
            margin-top: 16px;
            padding: 14px 16px;
            background: var(--layer-2);
            border: 1px solid var(--border);
            border-radius: var(--r-lg);
            font-size: 13px;
            line-height: 1.8;
            color: var(--text-2);
        }
        .api-monitor .failed { color: var(--danger); font-weight: 600; }
        .api-monitor .ok { color: var(--success); font-weight: 600; }

        /* ===== Toggle ===== */
        .toggle-wrapper { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
        .toggle { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
        .toggle input { opacity: 0; width: 0; height: 0; }
        .toggle .slider {
            position: absolute;
            cursor: pointer;
            top: 0; left: 0; right: 0; bottom: 0;
            background: var(--border-strong);
            border-radius: 24px;
            transition: all 0.2s ease;
        }
        .toggle .slider:before {
            content: "";
            position: absolute;
            height: 18px; width: 18px;
            left: 3px; bottom: 3px;
            background: #fff;
            border-radius: 50%;
            transition: all 0.2s ease;
            box-shadow: var(--shadow-sm);
        }
        .toggle input:checked + .slider { background: var(--primary); }
        .toggle input:checked + .slider:before { transform: translateX(20px); }
        .toggle input:focus-visible + .slider { box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2); }
        .toggle-label { font-size: 13px; font-weight: 600; color: var(--text-1); cursor: pointer; }

        /* ===== Tab navigation (top horizontal, sticky) ===== */
        .tab-nav-container {
            margin-bottom: 1px;
            padding: 10px 0 10px;
            position: sticky;
            top: 0;
            z-index: 90;
            background: #ffffff;

        }
        .tab-nav {
            display: flex;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0;
            background: #ffffff;
            border: none;
            border-radius: 0;
        }
        .tab-nav::-webkit-scrollbar { display: none; }
        .tab-nav .tab-item {
            padding: 9px 18px;
            cursor: pointer;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-2);
            white-space: nowrap;
            border-radius: var(--r-md);
            transition: all 0.15s ease;
            background: #ffffff;
            user-select: none;
            -webkit-tap-highlight-color: transparent;
            text-align: center;
            border: 1px solid var(--border);
        }
        .tab-nav .tab-item:hover {
            color: var(--primary);
            background: rgba(99, 102, 241, 0.08);
            border-color: rgba(99, 102, 241, 0.35);
        }
        .tab-nav .tab-item:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2); }
        .tab-nav .tab-item.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .tab-nav .tab-item.active:hover {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
        }
        .tab-content-area { min-width: 0; }
        .tab-panel { display: none; }
        .tab-panel.active { display: block; animation: fadeIn 0.25s ease; }

        @keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

        /* ===== Config sections (Layer 2 nested panels) ===== */
        .config-section {
            background: var(--layer-2);
            border: 1px solid var(--border);
            border-radius: var(--r-lg);
            padding: 20px;
            margin-bottom: 16px;
            transition: all 0.2s ease;
            position: relative;
        }
        .config-section:hover { border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
        .config-section.compact { padding: 16px; }
        .config-section.compact .section-header { margin-bottom: 12px; padding-bottom: 10px; }
        .config-section.compact .section-icon { width: 32px; height: 32px; font-size: 15px; border-radius: var(--r-sm); }
        .config-section.compact .section-title { font-size: 14px; }
        .config-section.compact .section-desc { font-size: 12px; }
        .config-section.compact .form-group { margin-bottom: 12px; }
        .config-section.compact .form-group label { font-size: 12px; margin-bottom: 5px; }
        .config-section.compact .form-group select { padding: 8px 12px; font-size: 13px; background-position: right 10px center; padding-right: 32px; }
        .config-section.compact .hint { font-size: 11px; }

        .section-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }
        .section-icon {
            width: 36px; height: 36px;
            background: var(--primary-light);
            border: 1px solid var(--primary-border);
            border-radius: var(--r-md);
            display: flex; align-items: center; justify-content: center;
            font-size: 17px;
            flex-shrink: 0;
        }
        .section-title { font-size: 14px; font-weight: 700; color: var(--text-1); line-height: 1.3; }
        .section-desc { font-size: 12px; color: var(--text-3); margin-top: 2px; line-height: 1.4; }
        .section-refresh {
            margin-left: auto;
            background: var(--layer-1);
            border: 1px solid var(--border);
            border-radius: var(--r-md);
            cursor: pointer;
            font-size: 13px;
            padding: 6px 12px;
            color: var(--text-3);
            transition: all 0.15s ease;
            flex-shrink: 0;
            line-height: 1;
            box-shadow: var(--shadow-xs);
        }
        .section-refresh:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-light); box-shadow: var(--shadow-sm); transform: translateY(-1px); }

        .cache-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
        .cache-grid > .config-section { margin-bottom: 0; }
        .cache-grid .config-section.full-width { grid-column: 1 / -1; }

        /* ===== Sub tabs (inline pill tabs) ===== */
        .sub-tab-nav { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 16px; gap: 4px; }
        .sub-tab-nav .sub-tab-item {
            padding: 8px 14px;
            cursor: pointer;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-3);
            border-bottom: 2px solid transparent;
            margin-bottom: -1px;
            transition: all 0.15s ease;
            border-radius: var(--r-sm) var(--r-sm) 0 0;
        }
        .sub-tab-nav .sub-tab-item:hover { color: var(--text-1); background: var(--layer-2); }
        .sub-tab-nav .sub-tab-item:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2); }
        .sub-tab-nav .sub-tab-item.active { color: var(--primary); border-bottom-color: var(--primary); }
        .sub-tab-panel { display: none; }
        .sub-tab-panel.active { display: block; animation: fadeIn 0.25s ease; }

        /* ===== Tables ===== */
        .table-wrap {
            overflow-x: auto;
            border-radius: var(--r-lg);
            border: 1px solid var(--border);
            background: var(--layer-1);
        }
        table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13px; }
        table th, table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
        table th {
            background: var(--layer-3);
            color: var(--text-1);
            font-weight: 700;
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 0.3px;
            position: sticky;
            top: 0;
        }
        table tbody tr { transition: background 0.12s; background: var(--layer-1); }
        table tbody tr:hover { background: var(--layer-2); }
        table tbody tr:last-child td { border-bottom: none; }
        table td { color: var(--text-2); }

        /* ===== Status banners (Layer 2 tinted) ===== */
        .status-banner {
            margin-bottom: 14px;
            padding: 11px 15px;
            border-radius: var(--r-md);
            font-size: 13px;
            font-weight: 500;
            line-height: 1.6;
            background: var(--layer-2);
            border: 1px solid var(--border);
            color: var(--text-2);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .status-banner.success { background: var(--success-light); color: #065f46; border-color: var(--success-border); }
        .status-banner.warning { background: var(--warning-light); color: #92400e; border-color: var(--warning-border); }
        .status-banner.danger { background: var(--danger-light); color: #991b1b; border-color: var(--danger-border); }
        .status-banner.info { background: var(--info-light); color: #075985; border-color: var(--info-border); }

        /* ===== Preview boxes ===== */
        .preview-box {
            margin-top: 10px;
            padding: 11px 14px;
            border-radius: var(--r-md);
            font-size: 13px;
            line-height: 1.7;
            display: none;
            background: var(--layer-2);
            border: 1px solid var(--border);
        }
        .preview-box.info { background: var(--info-light); color: #075985; border-color: var(--info-border); }
        .preview-box.success { background: var(--success-light); color: #065f46; border-color: var(--success-border); }
        .preview-box.primary { background: var(--primary-light); color: var(--primary-hover); border-color: var(--primary-border); }

        .data-snapshot {
            padding: 14px;
            border-radius: var(--r-md);
            background: var(--layer-2);
            border: 1px solid var(--border);
            line-height: 1.8;
        }
        .data-snapshot.primary { background: var(--accent-light); border-color: #ddd6fe; }
        .snapshot-note {
            margin-top: 10px;
            padding: 7px 11px;
            border-radius: var(--r-sm);
            font-size: 12px;
            display: inline-block;
            background: var(--layer-3);
            border: 1px solid var(--border);
        }
        .snapshot-note.warning { background: var(--warning-light); color: #92400e; border-color: var(--warning-border); }
        .snapshot-note.success { background: var(--success-light); color: #065f46; border-color: var(--success-border); }

        .date-list {
            font-size: 12px;
            line-height: 1.8;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            background: var(--layer-3);
            padding: 12px;
            border-radius: var(--r-md);
            max-height: 280px;
            overflow-y: auto;
            border: 1px solid var(--border);
            color: var(--text-2);
        }

        /* ===== Badges ===== */
        .badge {
            display: inline-block;
            padding: 3px 9px;
            border-radius: var(--r-xs);
            font-size: 12px;
            font-weight: 600;
            background: var(--layer-3);
            border: 1px solid var(--border);
            color: var(--text-2);
        }
        .badge.success { background: var(--success-light); color: var(--success); border-color: var(--success-border); }
        .badge.warning { background: var(--warning-light); color: var(--warning); border-color: var(--warning-border); }
        .badge.primary { background: var(--primary-light); color: var(--primary); border-color: var(--primary-border); }
        .badge.sm { padding: 2px 6px; font-size: 11px; border-radius: 4px; }

        .text-success { color: var(--success); font-weight: 600; }
        .text-danger { color: var(--danger); font-weight: 600; }

        a { color: var(--primary); transition: color 0.15s; text-decoration: none; }
        a:hover { color: var(--primary-hover); text-decoration: underline; }

        /* ===== Dialogs (Layer 4 elevated) ===== */
        .confirm-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.45);
            backdrop-filter: blur(4px);
            z-index: 9999;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        .confirm-overlay.show { display: flex; }
        .confirm-dialog {
            background: var(--layer-4);
            border: 1px solid var(--border);
            border-radius: var(--r-xl);
            padding: 26px 24px 20px;
            max-width: 420px;
            width: 100%;
            box-shadow: var(--shadow-2xl);
            text-align: center;
            position: relative;
        }
        .confirm-dialog .dialog-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            text-align: center;
            color: var(--text-1);
        }
        .confirm-dialog .confirm-msg {
            font-size: 14px;
            color: var(--text-2);
            margin-bottom: 20px;
            line-height: 1.6;
            min-height: 20px;
            white-space: pre-wrap;
        }
        .confirm-dialog .confirm-msg.error { color: var(--danger); font-weight: 500; }
        .confirm-dialog .confirm-btns { display: flex; gap: 10px; justify-content: center; }
        .confirm-dialog .confirm-btns button {
            border: 1px solid var(--border-strong);
            border-radius: var(--r-md);
            padding: 9px 24px;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.15s;
            font-weight: 600;
            font-family: inherit;
            line-height: 1.4;
        }
        .confirm-dialog .confirm-btns button:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
        .confirm-dialog .confirm-btns button:active { transform: translateY(0); }
        .confirm-dialog .confirm-btn-cancel { background: var(--layer-1); color: var(--text-2); }
        .confirm-dialog .confirm-btn-cancel:hover { background: var(--layer-2); color: var(--text-1); }
        .confirm-dialog .confirm-btn-ok { background: var(--primary); border-color: var(--primary); color: #fff; }
        .confirm-dialog .confirm-btn-ok:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
        #passwordOverlay label { display: block; margin-bottom: 5px; font-size: 13px; color: var(--text-1); font-weight: 600; }
        #passwordOverlay .form-row { margin-bottom: 12px; }

        /* ===== 错误详情弹窗（错误监控 Tab 专用） ===== */
        .error-detail-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(6px);
            z-index: 10001;
            align-items: center;
            justify-content: center;
            padding: 24px;
            animation: errDetailFadeIn 0.2s ease;
        }
        .error-detail-overlay.show { display: flex; }
        @keyframes errDetailFadeIn { from { opacity: 0; } to { opacity: 1; } }
        .error-detail-dialog {
            background: var(--layer-1);
            border: 1px solid var(--border);
            border-radius: var(--r-2xl);
            width: min(920px, 96vw);
            max-height: 88vh;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-2xl);
            animation: errDetailZoomIn 0.25s cubic-bezier(0.22, 1.2, 0.36, 1);
            overflow: hidden;
        }
        @keyframes errDetailZoomIn {
            from { opacity: 0; transform: translateY(20px) scale(0.96); }
            to { opacity: 1; transform: translateY(0) scale(1); }
        }
        .error-detail-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 22px;
            border-bottom: 1px solid var(--border);
            background: linear-gradient(135deg, var(--danger-light), var(--warning-light));
        }
        .error-detail-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-1);
        }
        .error-detail-close {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background: var(--layer-1);
            color: var(--text-2);
            font-size: 14px;
            cursor: pointer;
            transition: all 0.15s;
        }
        .error-detail-close:hover {
            background: var(--danger);
            color: #fff;
            border-color: var(--danger);
            transform: rotate(90deg);
        }
        .error-detail-toolbar {
            display: flex;
            gap: 8px;
            padding: 10px 22px;
            border-bottom: 1px solid var(--border);
            background: var(--layer-2);
            flex-wrap: wrap;
        }
        .error-detail-body {
            padding: 20px 22px;
            overflow-y: auto;
            flex: 1;
            min-height: 0;
        }
        .error-detail-body .err-meta-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 10px 16px;
            margin-bottom: 16px;
            padding: 14px 16px;
            background: var(--layer-3);
            border-radius: var(--r-md);
        }
        .error-detail-body .err-meta-row { display: flex; align-items: center; gap: 6px; font-size: 13px; }
        .error-detail-body .err-meta-label { color: var(--text-3); min-width: 56px; }
        .error-detail-body .err-meta-value {
            color: var(--text-1);
            font-weight: 500;
            word-break: break-all;
            overflow-wrap: anywhere;
        }
        .error-detail-body .err-section-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-2);
            margin: 14px 0 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .error-detail-body .err-section-title .badge {
            font-size: 11px;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .error-detail-body pre.err-code {
            background: var(--layer-3);
            padding: 12px 14px;
            border-radius: var(--r-md);
            font-size: 12.5px;
            line-height: 1.55;
            white-space: pre-wrap;
            word-break: break-all;
            overflow-wrap: anywhere;
            margin: 0;
            color: var(--text-1);
            border: 1px solid var(--border);
        }
        .error-detail-body pre.err-stack {
            background: #0f172a;
            color: #e2e8f0;
            border: none;
            max-height: 320px;
            overflow: auto;
            font-family: 'SF Mono', Monaco, Consolas, 'Courier New', monospace;
        }
        .error-detail-body .err-level-tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 999px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .error-detail-body .err-level-tag.fatal,
        .error-detail-body .err-level-tag.error {
            background: var(--danger-light); color: var(--danger); border: 1px solid var(--danger-border);
        }
        .error-detail-body .err-level-tag.warning {
            background: var(--warning-light); color: var(--warning); border: 1px solid var(--warning-border);
        }
        .error-detail-body .err-level-tag.info {
            background: var(--info-light); color: var(--info); border: 1px solid var(--info-border);
        }
        .error-detail-body .err-level-tag.debug {
            background: var(--layer-3); color: var(--text-3); border: 1px solid var(--border);
        }
        @media (max-width: 640px) {
            .error-detail-overlay { padding: 8px; }
            .error-detail-dialog { max-height: 96vh; }
            .error-detail-header { padding: 12px 14px; }
            .error-detail-body { padding: 14px; }
            .error-detail-toolbar { padding: 8px 14px; }
            .error-detail-body .err-meta-grid { padding: 10px; }
        }

        /* ===== Toast ===== */
        .toast {
            position: fixed;
            top: 20px;
            right: 20px;
            padding: 12px 22px;
            border-radius: var(--r-md);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            z-index: 10000;
            opacity: 0;
            transform: translateX(110%);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            max-width: 340px;
            box-shadow: var(--shadow-lg);
        }
        .toast.show { opacity: 1; transform: translateX(0); }
        .toast.success { background: var(--success); }
        .toast.error { background: var(--danger); }
        .toast.warning { background: var(--warning); }
        .toast.info { background: var(--primary); }

        /* ===== Loading overlay ===== */
        .loading-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.4);
            backdrop-filter: blur(3px);
            z-index: 9998;
            display: none;
            align-items: center;
            justify-content: center;
        }
        .loading-overlay.show { display: flex; }
        .loading-spinner {
            width: 40px;
            height: 40px;
            border: 3px solid rgba(255, 255, 255, 0.25);
            border-top-color: #fff;
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }
        @keyframes spin { to { transform: rotate(360deg); } }

        .btn-loading { position: relative; color: transparent !important; }
        .btn-loading::after {
            content: "";
            position: absolute;
            width: 14px;
            height: 14px;
            border: 2px solid rgba(255, 255, 255, 0.4);
            border-top-color: #fff;
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
            top: 50%;
            left: 50%;
            margin: -7px 0 0 -7px;
        }

        .stat-item {
            text-align: center;
            padding: 12px;
            background: var(--layer-2);
            border: 1px solid var(--border);
            border-radius: var(--r-md);
        }
        .stat-value { font-size: 22px; font-weight: 800; color: var(--success); }
        .stat-label { font-size: 12px; color: var(--text-3); margin-top: 3px; font-weight: 500; }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 8px; height: 8px; }
        ::-webkit-scrollbar-track { background: transparent; }
        ::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-4); }

        /* ===== Data Table (for search push / structured data tables) ===== */
        .data-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            font-size: 13px;
            background: var(--layer-1);
            border: 1px solid var(--border);
            border-radius: var(--r-md);
            overflow: hidden;
        }
        .data-table thead th {
            background: var(--layer-2);
            color: var(--text-2);
            font-weight: 600;
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 0.4px;
            padding: 10px 12px;
            text-align: center;
            border-bottom: 1px solid var(--border);
            white-space: nowrap;
        }
        .data-table tbody td {
            padding: 10px 12px;
            border-bottom: 1px solid var(--border);
            color: var(--text-2);
            text-align: center;
        }
        .data-table tbody tr:last-child td { border-bottom: none; }
        .data-table tbody tr:hover { background: var(--layer-2); }

        /* ===== Tags (status pills) ===== */
        .tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 11px;
            font-weight: 600;
            line-height: 1.6;
            letter-spacing: 0.2px;
            white-space: nowrap;
        }
        .tag-primary { background: var(--primary-light); color: var(--primary); border: 1px solid var(--primary-border); }
        .tag-success { background: var(--success-light); color: var(--success); border: 1px solid var(--success-border); }
        .tag-warning { background: var(--warning-light); color: var(--warning); border: 1px solid var(--warning-border); }
        .tag-danger { background: var(--danger-light); color: var(--danger); border: 1px solid var(--danger-border); }
        .tag-info { background: var(--info-light); color: var(--info); border: 1px solid var(--info-border); }

        /* ===== Form input alias (used by dynamically injected elements) ===== */
        .form-input {
            background: var(--layer-1);
            border: 1px solid var(--border-strong);
            border-radius: var(--r-sm);
            padding: 9px 12px;
            font-size: 13px;
            color: var(--text-1);
            font-family: inherit;
            transition: border-color 0.15s, box-shadow 0.15s;
            box-sizing: border-box;
            line-height: 1.4;
        }
        /* 统一 input / select 的行高，保证与相邻按钮（36px）视觉对齐；textarea 允许自身撑开 */
        input.form-input,
        select.form-input {
            height: 36px;
        }
        .form-input:focus {
            outline: none;
            border-color: var(--border-focus);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
        }
        .form-input::placeholder { color: var(--text-4); }

        /* ===== Responsive ===== */
        @media (max-width: 1280px) {
            .overview-grid { grid-template-columns: repeat(3, 1fr); }
        }
        @media (max-width: 1024px) {
            .container { padding: 20px 20px 40px; }
            .card { padding: 20px; }
            .tab-nav { gap: 4px; }
            .tab-nav .tab-item { padding: 8px 14px; font-size: 12px; }
            .grid { grid-template-columns: 1fr; }
            .overview-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .header-inner { padding: 12px 16px; gap: 12px; }
            .header h1 { font-size: 16px; }
            .header p { font-size: 11px; }
            .header-center { display: none; }
            .container { padding: 16px 16px 32px; }
            .card { padding: 16px; border-radius: var(--r-lg); }
            .cache-grid { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-5 { grid-template-columns: repeat(2, 1fr); }
            .overview-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 640px) {
            .tab-nav { gap: 2px; }
            .tab-nav .tab-item { padding: 7px 10px; font-size: 12px; border-radius: var(--r-sm); }
            .status-box { padding: 14px 8px; }
            .status-box .value { font-size: 22px; }
            .status-box.highlight .value { font-size: 24px; }
            .config-section { padding: 14px; }
            .btn { padding: 7px 14px; font-size: 12px; }
            .overview-grid { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: 1fr; }
            .grid-5 { grid-template-columns: 1fr; }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            #errorSummaryGrid { grid-template-columns: repeat(2, minmax(0,1fr)) !important; }
            .header-right .btn { padding: 6px 10px; font-size: 11px; }
            .data-table thead th { padding: 8px 8px; font-size: 11px; }
            .data-table tbody td { padding: 8px 8px; font-size: 12px; }
            .confirm-dialog { max-width: 92vw !important; }
        }