:root {
            color-scheme: light;
            --bg-primary: #f6f7f9;
            --bg-secondary: #eef1f5;
            --bg-tertiary: #e3e7ee;
            --text-primary: #172033;
            --text-secondary: #647084;
            --border-color: #dce2ea;
            --card-bg: #ffffff;
            --success: #22c55e;
            --warning: #eab308;
            --danger: #ef4444;
            --info: #2563eb;
            --amazon: #2563eb;
            --rakuten: #d9468b;
            --shopify: #16a34a;
            --surface-shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 10px 30px rgba(15, 23, 42, 0.06);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, 'SF Pro Display', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            color-scheme: light;
            line-height: 1.6;
            transition: background-color 0.3s, color 0.3s;
        }

        .container {
            max-width: 1440px;
            margin: 0 auto;
            padding: 24px 28px 40px;
        }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 24px;
            margin-bottom: 24px;
            padding: 22px 24px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: var(--surface-shadow);
        }

        h1 {
            font-size: 26px;
            font-weight: 600;
            letter-spacing: 0;
            line-height: 1.2;
        }

        .eyebrow {
            color: var(--text-secondary);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0;
            margin-bottom: 4px;
            text-transform: uppercase;
        }

        .tabs {
            display: flex;
            gap: 4px;
            padding: 4px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background: var(--bg-secondary);
        }

        .tab-button {
            padding: 8px 14px;
            border: 1px solid transparent;
            background: transparent;
            color: var(--text-secondary);
            border-radius: 6px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.18s;
            white-space: nowrap;
        }

        .tab-button.active {
            background: var(--card-bg);
            color: var(--text-primary);
            border-color: var(--border-color);
            box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
        }

        .tab-button:hover {
            border-color: var(--info);
        }

        .tab-content {
            display: none;
        }

        .tab-content.active {
            display: block;
        }

        .card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 18px;
            box-shadow: var(--surface-shadow);
        }

        .card-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 12px;
            margin-bottom: 18px;
        }

        .kpi-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 18px;
            text-align: left;
            box-shadow: var(--surface-shadow);
        }

        .kpi-card-strong {
            border-color: rgba(37, 99, 235, 0.35);
            background: linear-gradient(180deg, rgba(37, 99, 235, 0.08), #fff 70%);
        }

        .kpi-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            font-weight: 500;
        }

        .kpi-value {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.1;
        }

        .kpi-sub {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .kpi-sub.positive {
            color: var(--success);
        }

        .kpi-sub.negative {
            color: var(--danger);
        }

        .progress-bar {
            width: 100%;
            height: 8px;
            background: var(--bg-tertiary);
            border-radius: 4px;
            overflow: hidden;
            margin-top: 8px;
        }

        .progress-fill {
            height: 100%;
            background: var(--info);
            border-radius: 4px;
            transition: width 0.3s;
        }

        .month-buttons {
            display: flex;
            gap: 8px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .month-btn {
            padding: 7px 12px;
            border: 1px solid var(--border-color);
            background: var(--bg-secondary);
            color: var(--text-primary);
            border-radius: 6px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.18s;
        }

        .month-btn.active {
            background: var(--info);
            color: white;
            border-color: var(--info);
        }

        .month-btn:hover {
            border-color: var(--info);
        }

        .chart-container {
            position: relative;
            height: 400px;
            margin-bottom: 24px;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 16px;
        }

        thead {
            background: #f3f6fa;
            border-bottom: 1px solid var(--border-color);
        }

        th, td {
            padding: 9px 11px;
            text-align: right;
            border-bottom: 1px solid var(--border-color);
            font-size: 13px;
            vertical-align: middle;
        }

        /* 环比分析表:列数会随月份累积变多,允许超宽并横向滚动(外包 div 已配 overflow-x:auto) */
        #daily-comparison-table {
            width: auto;
            min-width: 100%;
        }
        #daily-comparison-table th,
        #daily-comparison-table td {
            white-space: nowrap;
        }

        th {
            font-weight: 600;
            color: var(--text-primary);
            text-align: center;
        }

        td:first-child {
            text-align: left;
        }

        tbody tr:hover {
            background: #f8fafc;
        }

        .positive {
            color: var(--success);
        }

        .negative {
            color: var(--danger);
        }

        .collapsible {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 16px;
            margin-bottom: 12px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
            transition: background 0.3s;
        }

        .collapsible:hover {
            background: var(--bg-tertiary);
        }

        .collapsible-content {
            display: none;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }

        .collapsible-content.active {
            display: block;
        }

        .toggle-icon {
            transition: transform 0.3s;
            display: inline-block;
        }

        .collapsible-content.active ~ .toggle-icon {
            transform: rotate(180deg);
        }

        .inventory-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 24px;
        }

        .alert {
            padding: 12px 16px;
            border-radius: 8px;
            margin-bottom: 16px;
            font-size: 14px;
        }

        .alert-danger {
            background: rgba(239, 68, 68, 0.1);
            color: var(--danger);
            border: 1px solid var(--danger);
        }

        .alert-warning {
            background: rgba(234, 179, 8, 0.1);
            color: var(--warning);
            border: 1px solid var(--warning);
        }

        .alert-success {
            background: rgba(34, 197, 94, 0.1);
            color: var(--success);
            border: 1px solid var(--success);
        }

        .hero-section {
            text-align: center;
            margin-bottom: 32px;
        }

        .hero-value {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .hero-label {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .progress-bar-large {
            width: 100%;
            max-width: 400px;
            height: 12px;
            background: var(--bg-tertiary);
            border-radius: 6px;
            overflow: hidden;
            margin: 0 auto 16px;
        }

        .progress-fill-large {
            height: 100%;
            background: var(--info);
            border-radius: 6px;
            transition: width 0.3s;
        }

        .floating-button {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--info);
            color: white;
            border: none;
            cursor: pointer;
            font-size: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            transition: all 0.3s;
            z-index: 100;
        }

        .floating-button:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
        }

        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 200;
            align-items: center;
            justify-content: center;
        }

        .modal-overlay.active {
            display: flex;
        }

        .modal {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 24px;
            max-width: 700px;
            width: 90%;
            max-height: 80vh;
            overflow-y: auto;
            position: relative;
        }

        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-secondary);
        }

        .modal-title {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .modal-table {
            width: 100%;
            border-collapse: collapse;
        }

        .modal-table th {
            background: var(--bg-secondary);
            padding: 12px;
            text-align: left;
            font-weight: 600;
            border: 1px solid var(--border-color);
        }

        .modal-table td {
            padding: 12px;
            border: 1px solid var(--border-color);
        }

        .modal-table tbody tr:hover {
            background: var(--bg-secondary);
        }

        .sub-tabs {
            display: flex;
            gap: 8px;
            margin-bottom: 20px;
            flex-wrap: wrap;
            border-bottom: 2px solid var(--border-color);
        }

        .sub-tab-button {
            padding: 10px 16px;
            border: none;
            background: none;
            color: var(--text-secondary);
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            border-bottom: 3px solid transparent;
            transition: all 0.3s;
        }

        .sub-tab-button.active {
            color: var(--info);
            border-bottom-color: var(--info);
        }

        .sub-tab-content {
            display: none;
        }

        .sub-tab-content.active {
            display: block;
        }

        .loading {
            text-align: center;
            padding: 40px;
            color: var(--text-secondary);
            font-size: 16px;
        }

        .error {
            background: rgba(239, 68, 68, 0.1);
            color: var(--danger);
            padding: 16px;
            border-radius: 8px;
            border: 1px solid var(--danger);
            margin-bottom: 20px;
        }

        .stat-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
            margin-bottom: 16px;
        }

        .stat-item {
            padding: 16px;
            background: var(--bg-secondary);
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .stat-label {
            font-size: 12px;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .stat-value {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .section-heading {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 16px;
        }

        .section-heading .card-title {
            margin-bottom: 4px;
        }

        .section-note {
            color: var(--text-secondary);
            font-size: 13px;
            margin: 0;
        }

        .status-pill {
            padding: 6px 10px;
            border: 1px solid var(--border-color);
            border-radius: 999px;
            color: var(--text-secondary);
            background: var(--bg-secondary);
            font-size: 12px;
            white-space: nowrap;
        }

        .finance-kpi-grid {
            grid-template-columns: repeat(4, minmax(180px, 1fr));
        }

        .finance-focus-grid {
            grid-template-columns: repeat(2, minmax(220px, 1fr));
        }

        .finance-kpi-grid .kpi-value {
            font-size: 24px;
            line-height: 1.15;
            word-break: keep-all;
        }

        .finance-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
            gap: 12px;
            margin-bottom: 12px;
        }

        .finance-waterfall,
        .finance-cost-breakdown,
        .finance-alerts {
            margin-top: 14px;
        }

        .profit-bridge {
            display: grid;
            gap: 10px;
        }

        .bridge-step {
            display: grid;
            grid-template-columns: 26px minmax(0, 1fr) 20px;
            align-items: center;
            gap: 10px;
        }

        .bridge-prefix {
            width: 26px;
            height: 26px;
            border-radius: 999px;
            display: grid;
            place-items: center;
            font-weight: 800;
            color: var(--text-secondary);
            background: var(--bg-secondary);
        }

        .bridge-card {
            display: grid;
            grid-template-columns: minmax(82px, 0.8fr) minmax(110px, 1fr);
            gap: 4px 12px;
            padding: 12px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background: linear-gradient(180deg, #ffffff, #f8fafc);
        }

        .bridge-label {
            font-weight: 700;
            color: var(--text-primary);
        }

        .bridge-value {
            text-align: right;
            font-variant-numeric: tabular-nums;
            font-weight: 800;
            color: var(--text-primary);
        }

        .bridge-note {
            grid-column: 1 / -1;
            color: var(--text-secondary);
            font-size: 12px;
        }

        .bridge-connector {
            width: 2px;
            height: 28px;
            background: var(--border-color);
            justify-self: center;
        }

        .bridge-step.income .bridge-card {
            border-color: #bfdbfe;
            background: linear-gradient(180deg, #eff6ff, #ffffff);
        }

        .bridge-step.cost .bridge-card {
            border-color: #fecaca;
            background: linear-gradient(180deg, #fff1f2, #ffffff);
        }

        .bridge-step.subtotal .bridge-card {
            border-color: #99f6e4;
            background: linear-gradient(180deg, #f0fdfa, #ffffff);
        }

        .bridge-step.result.negative .bridge-card {
            border-color: #fca5a5;
            background: linear-gradient(180deg, #fef2f2, #ffffff);
        }

        .bridge-step.income .bridge-value {
            color: var(--info);
        }

        .bridge-step.cost .bridge-value,
        .bridge-step.result.negative .bridge-value {
            color: var(--danger);
        }

        .bridge-step.subtotal .bridge-value,
        .bridge-step.result.positive .bridge-value {
            color: var(--success);
        }

        .bridge-readout {
            margin-top: 12px;
            padding: 10px 12px;
            border-radius: 8px;
            background: #fff7ed;
            border: 1px solid #fed7aa;
            color: #9a3412;
            font-size: 13px;
            line-height: 1.5;
        }

        .pareto-summary {
            display: flex;
            justify-content: space-between;
            gap: 12px;
            padding: 10px 12px;
            border-radius: 999px;
            background: var(--bg-secondary);
            color: var(--text-primary);
            font-weight: 700;
            font-size: 13px;
            margin-bottom: 10px;
        }

        .pareto-summary span {
            color: var(--text-secondary);
            font-weight: 600;
        }

        .pareto-row {
            display: grid;
            grid-template-columns: 28px minmax(0, 1fr) 86px;
            gap: 10px;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .pareto-row:last-child {
            border-bottom: 0;
        }

        .pareto-rank {
            width: 24px;
            height: 24px;
            border-radius: 999px;
            background: var(--bg-secondary);
            display: grid;
            place-items: center;
            color: var(--text-secondary);
            font-weight: 800;
            font-size: 12px;
        }

        .pareto-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            margin-bottom: 6px;
        }

        .pareto-label {
            font-weight: 700;
            color: var(--text-primary);
        }

        .pareto-tag {
            flex: none;
            padding: 2px 7px;
            border-radius: 999px;
            font-size: 11px;
            color: #1d4ed8;
            background: #dbeafe;
        }

        .pareto-meter {
            height: 8px;
            border-radius: 999px;
            background: var(--bg-secondary);
            overflow: hidden;
        }

        .pareto-meter span {
            display: block;
            height: 100%;
            border-radius: inherit;
            background: var(--info);
            min-width: 24px;
        }

        .pareto-row.critical .pareto-meter span {
            background: #ef4444;
        }

        .pareto-row.high .pareto-meter span {
            background: #f59e0b;
        }

        .pareto-sub {
            color: var(--text-secondary);
            font-size: 12px;
            margin-top: 2px;
        }

        .pareto-value {
            text-align: right;
            font-variant-numeric: tabular-nums;
            font-weight: 800;
            color: var(--text-primary);
        }

        .finance-alert {
            padding: 10px 12px;
            margin-top: 8px;
            border-radius: 8px;
            background: #fff7ed;
            border: 1px solid #fed7aa;
            color: #9a3412;
            font-size: 13px;
        }

        .source-table-card {
            margin-top: 12px;
        }

        #finance-monthly-table {
            min-width: 760px;
        }

        #finance-budget-table {
            min-width: 880px;
        }

        #finance-table {
            min-width: 620px;
        }

        #finance-table th,
        #finance-table td {
            white-space: nowrap;
        }

        #finance-table td:nth-child(1) {
            position: sticky;
            background: inherit;
        }

        #finance-table td:nth-child(1) {
            left: 0;
            z-index: 1;
            min-width: 120px;
        }

        #finance-table .highlight-row {
            background: rgba(250, 204, 21, 0.16);
            font-weight: 650;
        }

        @media (max-width: 768px) {
            .kpi-grid {
                grid-template-columns: 1fr;
            }

            .inventory-section {
                grid-template-columns: 1fr;
            }

            .container {
                padding: 16px;
            }

            h1 {
                font-size: 22px;
            }

            .hero-value {
                font-size: 36px;
            }

            header {
                flex-direction: column;
                align-items: stretch;
                gap: 14px;
            }

            .tabs {
                width: 100%;
                justify-content: center;
                overflow-x: auto;
            }

            .tab-button {
                flex: 1 1 0;
                text-align: center;
            }

            .finance-kpi-grid {
                grid-template-columns: 1fr;
            }

            .finance-focus-grid {
                grid-template-columns: 1fr;
            }

            .finance-grid {
                grid-template-columns: 1fr;
            }

            .waterfall-row,
            .cost-row {
                grid-template-columns: 1fr;
                gap: 6px;
            }

            .waterfall-value,
            .cost-value {
                text-align: left;
            }

            .bridge-step {
                grid-template-columns: 24px minmax(0, 1fr);
            }

            .bridge-connector {
                display: none;
            }

            .bridge-card {
                grid-template-columns: 1fr;
            }

            .bridge-value {
                text-align: left;
            }

            .pareto-summary,
            .pareto-head {
                align-items: flex-start;
                flex-direction: column;
            }

            .pareto-row {
                grid-template-columns: 24px minmax(0, 1fr);
            }

            .pareto-meter {
                height: 10px;
                background: #e2e8f0;
            }

            .pareto-meter span {
                min-width: 18px;
            }

            .pareto-value {
                grid-column: 2;
                text-align: left;
            }

            .section-heading {
                flex-direction: column;
            }

            #finance-monthly-table,
            #finance-budget-table,
            #finance-table {
                min-width: 0;
            }

            #finance-monthly-table thead,
            #finance-budget-table thead,
            #finance-table thead {
                display: none;
            }

            #finance-monthly-table,
            #finance-monthly-table tbody,
            #finance-monthly-table tr,
            #finance-monthly-table td,
            #finance-budget-table,
            #finance-budget-table tbody,
            #finance-budget-table tr,
            #finance-budget-table td,
            #finance-table,
            #finance-table tbody,
            #finance-table tr,
            #finance-table td {
                display: block;
                width: 100%;
            }

            #finance-monthly-table tr,
            #finance-budget-table tr,
            #finance-table tr {
                padding: 10px 12px;
                margin-bottom: 10px;
                border: 1px solid var(--border-color);
                border-radius: 8px;
                background: var(--card-bg);
            }

            #finance-monthly-table td,
            #finance-budget-table td,
            #finance-table td {
                display: grid;
                grid-template-columns: minmax(88px, 42%) 1fr;
                gap: 12px;
                padding: 7px 0;
                border-bottom: 1px solid var(--border-color);
                text-align: right;
                white-space: normal;
            }

            #finance-monthly-table td:last-child,
            #finance-budget-table td:last-child,
            #finance-table td:last-child {
                border-bottom: 0;
            }

            #finance-monthly-table td::before,
            #finance-budget-table td::before,
            #finance-table td::before {
                content: attr(data-label);
                color: var(--text-secondary);
                font-weight: 600;
                text-align: left;
            }

            #finance-table td:nth-child(1) {
                position: static;
                min-width: 0;
            }
        }