.reports-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 20px;
        }
.report-card {
            background: var(--card-bg);
            border-radius: 0;  /* parent .swipe-card-wrap handles clip */
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: box-shadow var(--transition-base), transform var(--transition-base), background-color var(--transition-base);
            cursor: pointer;
            border: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
            user-select: none;
        }
.report-card::after {
            content: '';
            position: absolute;
            top: 50%; left: 50%;
            width: 0; height: 0;
            background: var(--primary-light);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            transition: width 0.5s ease, height 0.5s ease;
            pointer-events: none;
        }
.report-card:active::after {
            width: 300px; height: 300px;
        }
.report-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-color);
        }
.report-card:active {
            transform: scale(0.995);
            transition: transform 0.1s ease;
        }
.report-card .date {
            font-size: 13px;
            color: var(--text-tertiary);
            margin-bottom: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
        }
.report-card .status-tag {
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
            color: white;
            letter-spacing: 0.02em;
        }
.status-tag.published {
            background: var(--success-color);
        }
.status-tag.draft {
            background: var(--warning-color);
        }
.report-card .title {
            font-size: 16px;
            font-weight: 650;
            line-height: 1.5;
            margin-bottom: 14px;
            color: var(--text-color);
            letter-spacing: -0.01em;
            transition: color var(--transition-base);
        }
.report-card .main-theme {
            background: var(--primary-light);
            color: var(--primary-color);
            padding: 3px 10px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
.report-card .stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 8px;
            margin-bottom: 16px;
            font-size: 13px;
        }
.stat-item {
            text-align: center;
            padding: 10px 6px;
            background: var(--success-light);
            border-radius: var(--card-radius-sm);
            color: var(--success-color);
            font-weight: 600;
            font-size: 12px;
            line-height: 1.4;
            transition: background 0.15s ease;
            border: 1px solid transparent;
        }
.report-card:hover .stat-item {
            border-color: rgba(220, 38, 38, 0.15);
        }
.stat-item.down {
            background: var(--danger-light);
            color: var(--danger-color);
        }
.report-card:hover .stat-item.down {
            border-color: rgba(16, 185, 129, 0.15);
        }
.report-card .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 10px;
        }
.tag {
            background: var(--primary-light);
            color: var(--primary-color);
            padding: 3px 6px;
            border-radius: 4px;
            font-size: 12px;
            transition: all 0.15s ease;
        }
.report-card:hover .tag {
            transform: translateY(-1px);
        }
.report-card .desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            transition: color var(--transition-base);
        }
.skeleton-card {
            background: var(--card-bg);
            border-radius: 0;  /* parent .swipe-card-wrap handles clip */
            box-shadow: var(--shadow);
            padding: 20px;
            border: 1px solid var(--border-color);
            transition: background-color var(--transition-base);
        }
.skeleton-title {
            height: 20px;
            width: 70%;
            margin-bottom: 12px;
        }
.skeleton-line {
            height: 14px;
            margin-bottom: 10px;
        }
.skeleton-line.short {
            width: 40%;
        }
.skeleton-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 15px;
        }
.skeleton-stat {
            height: 36px;
            border-radius: 4px;
        }
/* Load more indicator */
        .load-more-indicator {
            text-align: center;
            padding: 24px 0;
            color: var(--text-secondary);
        }
.load-more-indicator .loading-spinner {
            width: 28px;
            height: 28px;
            border-width: 2px;
            margin: 0 auto;
        }
.load-more-indicator p {
            margin-top: 10px;
            font-size: 13px;
        }
.all-loaded {
            text-align: center;
            padding: 20px 0;
            color: var(--text-secondary);
            font-size: 13px;
        }
/* Toast notification */
        .toast-container {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 10000;
            display: flex;
            flex-direction: column;
            gap: 10px;
            pointer-events: none;
        }
.toast {
            padding: 12px 20px;
            border-radius: 8px;
            color: white;
            font-size: 14px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: 200px;
            max-width: 400px;
            animation: toast-in 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
            pointer-events: auto;
            backdrop-filter: blur(10px);
        }
.toast.leaving {
            animation: toast-out 0.3s ease forwards;
        }
.toast-success { background: rgba(220, 38, 38, 0.92); }
.toast-error { background: rgba(16, 185, 129, 0.92); }
.toast-warning { background: rgba(230, 162, 60, 0.9); }
.toast-info { background: rgba(109, 93, 240, 0.92); }
@keyframes toast-in {
            from { transform: translateX(100%); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }
@keyframes toast-out {
            from { transform: translateX(0); opacity: 1; }
            to { transform: translateX(100%); opacity: 0; }
        }
/* Empty state */
        .empty-state {
            text-align: center;
            padding: 80px 20px;
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }
.empty-state-icon {
            font-size: 64px;
            margin-bottom: 16px;
            opacity: 0.6;
        }
.empty-state h3 {
            margin-bottom: 10px;
            font-size: 18px;
            color: var(--text-color);
            transition: color var(--transition-base);
        }
.empty-state p {
            font-size: 14px;
        }
/* Network error state */
        .error-state {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-secondary);
        }
.error-state button {
            margin-top: 16px;
            padding: 10px 24px;
            background: var(--primary-color);
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
            transition: all 0.2s ease;
        }
.error-state button:hover {
            background: var(--primary-hover);
        }
.footer {
            text-align: center;
            padding: 30px 0;
            color: var(--text-secondary);
            font-size: 14px;
            border-top: 1px solid var(--border-color);
            margin-top: 50px;
            transition: color var(--transition-base), border-color var(--transition-base);
        }
/* Theme shortcut hint */
        .shortcut-hint {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background: var(--card-bg);
            color: var(--text-secondary);
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 12px;
            box-shadow: var(--shadow);
            opacity: 0;
            transition: opacity 0.3s ease, background-color var(--transition-base), color var(--transition-base);
            pointer-events: none;
            z-index: 100;
        }
.shortcut-hint.show {
            opacity: 1;
        }
/* Filter bar */
        .filter-bar {
            background: var(--card-bg);
            padding: 16px 20px;
            border-radius: 0;  /* parent .swipe-card-wrap handles clip */
            box-shadow: var(--shadow);
            margin-bottom: 20px;
            transition: background-color var(--transition-base), box-shadow var(--transition-base);
        }
.filter-section {
            margin-bottom: 12px;
        }
.filter-section:last-child {
            margin-bottom: 0;
        }
.filter-section-title {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
        }
.quick-filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
.quick-filter-btn {
            padding: 6px 14px;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            background: var(--card-bg);
            font-weight: 500;
            color: var(--text-secondary);
            font-size: 13px;
            cursor: pointer;
            transition: all 0.15s ease;
            user-select: none;
        }
.quick-filter-btn:hover {
            border-color: var(--primary-color);
            background: var(--primary-light);
            color: var(--primary-color);
            background: var(--primary-light);
            transform: translateY(-1px);
        }
.quick-filter-btn.active {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
.tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            max-height: 120px;
            overflow-y: auto;
            padding-right: 4px;
        }
.tag-chip {
            padding: 5px 12px;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            background: var(--card-bg);
            font-weight: 500;
            color: var(--text-secondary);
            font-size: 12px;
            cursor: pointer;
            transition: all 0.15s ease;
            user-select: none;
            white-space: nowrap;
        }
.tag-chip:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
            background: var(--primary-light);
            transform: translateY(-1px);
        }
.tag-chip.active {
            background: var(--primary-light);
            color: var(--primary-color);
            border-color: var(--primary-color);
        font-weight: 600;
        }
.filter-actions {
            display: flex;
            justify-content: flex-end;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--border-color);
        }
.filter-reset-btn {
            padding: 6px 16px;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            background: var(--card-bg);
            color: var(--text-secondary);
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.15s ease;
            display: flex;
            align-items: center;
            gap: 4px;
        }
.filter-reset-btn:hover {
            border-color: var(--danger-color);
            color: var(--danger-color);
        }
.filter-summary {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 8px;
            padding-top: 8px;
            border-top: 1px dashed var(--border-color);
        }
.filter-summary span {
            color: var(--primary-color);
            font-weight: 600;
        }
/* Scrollbar styling for tag cloud */
        .tag-cloud::-webkit-scrollbar {
            width: 4px;
        }
.tag-cloud::-webkit-scrollbar-track {
            background: transparent;
        }
.tag-cloud::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 2px;
        }
/* ---- 移动端底部导航栏 ---- */
        .mobile-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: calc(var(--mobile-nav-height) + var(--safe-area-bottom));
            padding-bottom: var(--safe-area-bottom);
            background: var(--card-bg);
            border-top: 1px solid var(--border-color);
            z-index: 1000;
            box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
            transition: background-color var(--transition-base), border-color var(--transition-base);
        }
.mobile-nav-inner {
            display: flex;
            height: var(--mobile-nav-height);
            align-items: center;
            justify-content: space-around;
        }
.mobile-nav-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100%;
            cursor: pointer;
            user-select: none;
            -webkit-tap-highlight-color: transparent;
            color: var(--text-secondary);
            transition: color 0.2s ease;
            position: relative;
        }
.mobile-nav-item:active {
            opacity: 0.6;
        }
.mobile-nav-item.active {
            color: var(--primary-color);
        }
.mobile-nav-item .nav-icon {
            font-size: 22px;
            line-height: 1;
            margin-bottom: 2px;
        }
.mobile-nav-item .nav-label {
            font-size: 10px;
            line-height: 1.2;
        }
.mobile-nav-item .nav-badge {
            position: absolute;
            top: 4px;
            right: calc(50% - 18px);
            min-width: 16px;
            height: 16px;
            padding: 0 4px;
            background: var(--danger-color);
            color: white;
            font-size: 10px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
        }
/* ---- 横向滚动标签 ---- */
        .tag-cloud-mobile {
            display: none;
            overflow-x: auto;
            overflow-y: hidden;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            gap: 8px;
            padding: 2px 0 6px;
            white-space: nowrap;
        }
.tag-cloud-mobile::-webkit-scrollbar {
            display: none;
        }
.tag-cloud-mobile .tag-chip {
            display: inline-flex;
            flex-shrink: 0;
        }
/* ---- 滑动卡片容器 ---- */
        .swipe-card-wrap {
            position: relative;
            overflow: hidden;
            border-radius: 0;  /* parent .swipe-card-wrap handles clip */
            touch-action: pan-y;
        }
.swipe-card-actions {
            position: absolute;
            top: 0;
            bottom: 0;
            right: 0;
            display: flex;
            align-items: stretch;
            z-index: 1;
        }
.swipe-action-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 72px;
            color: white;
            font-size: 13px;
            flex-direction: column;
            gap: 4px;
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
        }
.swipe-action-btn .action-icon {
            font-size: 20px;
        }
.swipe-action-btn.favorite {
            background: #f59e0b;
        }
.swipe-action-btn.favorite.is-fav {
            background: #d97706;
        }
.swipe-action-btn.delete {
            background: var(--danger-color);
        }
.swipe-action-btn.share {
            background: var(--primary-color);
        }
.swipe-card-content {
            position: relative;
            z-index: 2;
            width: 100%;
            height: 100%;
            background: var(--card-bg);
            border-radius: 0;  /* parent .swipe-card-wrap handles clip */
            overflow: hidden;
            transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            will-change: transform;
        }
.swipe-card-wrap.is-swiped {
            z-index: 10;
        }
.swipe-card-wrap.is-swiped .swipe-card-content {
            transform: translateX(-72px);
        }
/* ---- 下拉刷新 ---- */
        .pull-refresh-wrap {
            position: relative;
            overflow: hidden;
        }
.pull-refresh-indicator {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            display: flex;
            align-items: flex-end;
            justify-content: center;
            padding-bottom: 12px;
            height: 60px;
            transform: translateY(-100%);
            transition: transform 0.2s ease;
            z-index: 10;
            pointer-events: none;
        }
.pull-refresh-indicator.visible {
            transform: translateY(0);
        }
.pull-refresh-indicator .refresh-spinner {
            width: 20px;
            height: 20px;
            border: 2px solid var(--border-color);
            border-top-color: var(--primary-color);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }
.pull-refresh-indicator .refresh-text {
            margin-left: 8px;
            font-size: 13px;
            color: var(--text-secondary);
        }
/* ---- 收藏指示器 ---- */
        .fav-indicator {
            position: absolute;
            top: 8px;
            right: 8px;
            font-size: 20px;
            color: #f59e0b;
            z-index: 3;
            opacity: 0;
            transform: scale(0);
            transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
            pointer-events: none;
        }
.fav-indicator.show {
            opacity: 1;
            transform: scale(1);
        }
.report-card.is-favorite .fav-indicator {
            opacity: 1;
            transform: scale(1);
        }
/* ---- 移动端卡片样式优化 ---- */
        @media (max-width: 767px) {
            .report-card {
                padding: 14px;
                border-radius: 12px;
            }
            .report-card .title {
                font-size: 16px;
                margin-bottom: 8px;
                line-height: 1.4;
            }
            .report-card .stats {
                gap: 6px;
                margin-bottom: 10px;
            }
            .stat-item {
                padding: 6px 0;
                font-size: 12px;
            }
            .report-card .main-theme {
                font-size: 12px;
                padding: 3px 6px;
                margin-bottom: 8px;
            }
            .report-card .tags {
                gap: 4px;
                margin-bottom: 8px;
            }
            .tag {
                font-size: 11px;
                padding: 2px 5px;
            }
            .report-card .desc {
                font-size: 12px;
                line-height: 1.5;
            }
            .report-card .date {
                font-size: 12px;
                margin-bottom: 8px;
            }
        }
/* ============================================
           响应式断点系统 (xs, sm, md, lg)
           ============================================ */

        /* ---- xs: < 480px (小屏手机) ---- */
        @media (max-width: 479px) {
            .header { padding: 24px 0; }
            .header h1 { font-size: 22px; }
            .header .subtitle { font-size: 13px; }
            .container { padding: 12px; padding-bottom: calc(12px + var(--mobile-nav-height)); }
            .search-bar {
                padding: 12px;
                gap: 10px;
                margin-bottom: 16px;
                border-radius: 12px;
            }
            .search-input, .date-picker {
                width: 100%;
                padding: 10px 12px;
                font-size: 16px; /* 防止iOS缩放 */
            }
            .date-range-wrap {
                width: 100%;
            }
            .theme-toggle {
                width: 100%;
                padding: 10px;
                font-size: 14px;
            }
            .reports-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .filter-bar {
                padding: 12px;
                margin-bottom: 12px;
                border-radius: 12px;
            }
            .quick-filter-group {
                gap: 6px;
            }
            .quick-filter-btn {
                padding: 5px 10px;
                font-size: 12px;
            }
            .filter-actions {
                margin-top: 8px;
                padding-top: 8px;
            }
            .footer {
                padding: 20px 0;
                font-size: 12px;
                margin-bottom: var(--mobile-nav-height);
            }
            .toast-container {
                top: 10px;
                left: 10px;
                right: 10px;
            }
            .toast {
                max-width: 100%;
                font-size: 13px;
                padding: 10px 14px;
            }
            .mobile-nav { display: block; }
            .tag-cloud { display: none; }
            .tag-cloud-mobile { display: flex; }
            .shortcut-hint { display: none; }
            .load-more-indicator { padding: 16px 0; }
            .all-loaded { padding: 14px 0; font-size: 12px; }
        }
/* ---- sm: 480px - 767px (大屏手机) ---- */
        @media (min-width: 480px) and (max-width: 767px) {
            .header { padding: 30px 0; }
            .header h1 { font-size: 26px; }
            .container { padding: 16px; padding-bottom: calc(16px + var(--mobile-nav-height)); }
            .search-bar {
                flex-direction: column;
                align-items: stretch;
                padding: 14px;
                gap: 10px;
                margin-bottom: 18px;
            }
            .search-input, .date-picker, .theme-toggle { width: 100%; }
            .reports-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .filter-bar { padding: 14px; margin-bottom: 14px; }
            .footer { margin-bottom: var(--mobile-nav-height); }
            .toast-container { left: 12px; right: 12px; }
            .toast { max-width: 100%; }
            .mobile-nav { display: block; }
            .tag-cloud { display: none; }
            .tag-cloud-mobile { display: flex; }
            .shortcut-hint { display: none; }
        }
/* ---- md: 768px - 1023px (平板) ---- */
        @media (min-width: 768px) and (max-width: 1023px) {
            .container { padding: 24px 20px; }
            .reports-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .header h1 { font-size: 30px; }
            .search-bar { flex-wrap: wrap; }
            .mobile-nav { display: none; }
            .tag-cloud { display: flex; }
            .tag-cloud-mobile { display: none; }
        }
/* ---- lg: >= 1024px (桌面) ---- */
        @media (min-width: 1024px) {
            .mobile-nav { display: none; }
            .tag-cloud { display: flex; }
            .tag-cloud-mobile { display: none; }
        }
/* ---- 通用移动端优化 (< 768px) ---- */
        @media (max-width: 767px) {
            /* 移除hover效果，避免移动端残留 */
            .report-card:hover {
                transform: none;
                box-shadow: var(--shadow);
            }
            .report-card:hover .stat-item,
            .report-card:hover .tag {
                transform: none;
            }
            .theme-toggle:hover,
            .quick-filter-btn:hover,
            .tag-chip:hover,
            .filter-reset-btn:hover,
            .error-state button:hover {
                transform: none;
            }
            /* 增强active反馈 */
            .report-card:active {
                transform: scale(0.98);
                box-shadow: 0 1px 6px rgba(0,0,0,0.08);
            }
            .quick-filter-btn:active {
                opacity: 0.7;
            }
            .tag-chip:active {
                opacity: 0.7;
            }
        }
/* ---- 桌面端：操作按钮直接显示为卡片底部操作栏 ---- */
@media (hover: hover) and (pointer: fine) {
    /* Desktop: inline action buttons, no swipe */
    .swipe-card-wrap {
        overflow: visible;
        display: flex;
        flex-direction: column;
        transition: transform var(--transition-base), box-shadow var(--transition-base);
    }
    .swipe-card-wrap:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }
    .swipe-card-actions {
        order: 2;
        position: relative;
        top: auto;
        bottom: auto;
        right: auto;
        display: flex;
        justify-content: flex-end;
        gap: 8px;
        padding: 12px 20px 16px;
        background: var(--card-bg);
        border-top: 1px solid var(--border-light);
        border-radius: 0 0 var(--card-radius) var(--card-radius);
        z-index: auto;
    }
    .swipe-card-content {
        order: 1;
        border-radius: var(--card-radius) var(--card-radius) 0 0;
        transform: none !important;
        height: auto;
    }
    .swipe-card-content .report-card:hover {
        transform: none;
    }
    .swipe-card-wrap.is-swiped {
        z-index: auto;
    }
    .swipe-action-btn {
        width: auto;
        min-width: unset;
        padding: 6px 14px;
        border-radius: 8px;
        font-size: 13px;
        font-weight: 500;
        flex-direction: row;
        gap: 5px;
        background: var(--bg-color);
        color: var(--text-color);
        border: 1px solid var(--border-color);
        transition: all 0.15s ease;
    }
    .swipe-action-btn:hover {
        background: var(--border-light);
        border-color: var(--border-color);
    }
    .swipe-action-btn.favorite {
        background: rgba(245, 158, 11, 0.1);
        color: #b45309;
        border-color: rgba(245, 158, 11, 0.25);
    }
    .swipe-action-btn.favorite:hover {
        background: rgba(245, 158, 11, 0.18);
        border-color: #f59e0b;
    }
    .swipe-action-btn.favorite.is-fav {
        background: #f59e0b;
        border-color: #f59e0b;
        color: white;
    }
    .swipe-action-btn .action-icon {
        font-size: 14px;
    }
}