.upload-zone {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 48px;
    text-align: center;
    background: var(--bg-card);
    transition: all 0.3s;
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(26,86,219,0.02) 0%, rgba(14,165,233,0.02) 100%);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.upload-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.upload-desc {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.upload-formats {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.format-tag {
    background: var(--bg-main);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-muted);
}

.data-table-container {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.table-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.table-title {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.table-count {
    background: var(--bg-main);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-muted);
}

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

.data-table th {
    background: var(--bg-main);
    padding: 12px 16px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
}

.data-table td {
    padding: 12px 16px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

.data-table tr:hover td {
    background: rgba(26,86,219,0.02);
}

.data-table tr:last-child td {
    border-bottom: none;
}

.chart-container {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.chart-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chart-type-selector {
    display: flex;
    gap: 8px;
}

.export-dropdown {
    position: relative;
    display: inline-block;
}

.export-dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    min-width: 180px;
    z-index: 1000;
    overflow: hidden;
}

.export-dropdown:hover .export-dropdown-content,
.export-dropdown-content:hover {
    display: block;
}

.export-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    cursor: pointer;
    transition: background 0.2s;
    border-bottom: 1px solid var(--border);
}

.export-option:last-child {
    border-bottom: none;
}

.export-option:hover {
    background: var(--bg-main);
}

.export-option-icon {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
}

.export-option-icon.png { background: #a855f7; color: #fff; }
.export-option-icon.jpg { background: #f97316; color: #fff; }
.export-option-icon.svg { background: #22c55e; color: #fff; }
.export-option-icon.pdf { background: #ef4444; color: #fff; }
.export-option-icon.excel { background: #16a34a; color: #fff; }

.export-option-text {
    flex: 1;
}

.export-option-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.export-option-desc {
    font-size: 11px;
    color: var(--text-muted);
}

.chart-type-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.chart-type-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

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

.chart-body {
    padding: 20px;
    min-height: 400px;
}

#mainChart {
    width: 100%;
    height: 400px;
}

.switch-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
}

.switch-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.switch {
    position: relative;
    width: 40px;
    height: 22px;
    background: var(--border);
    border-radius: 11px;
    cursor: pointer;
    transition: background 0.3s;
}

.switch.active {
    background: var(--primary);
}

.switch::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform 0.3s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.switch.active::after {
    transform: translateX(18px);
}

.advanced-options {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--border);
}

.advanced-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.option-select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-primary);
    background: var(--bg-card);
    cursor: pointer;
    margin-top: 4px;
}

.option-select:focus {
    outline: none;
    border-color: var(--primary);
}

.option-group {
    margin-bottom: 8px;
}

.option-group:last-child {
    margin-bottom: 0;
}

.variable-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.variable-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--bg-main);
    border-radius: 8px;
    cursor: grab;
    transition: all 0.2s;
    font-size: 13px;
}

.variable-item:hover {
    background: linear-gradient(90deg, rgba(26,86,219,0.08) 0%, var(--bg-main) 100%);
}

.variable-item.dragging {
    opacity: 0.5;
}

.var-type {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.var-type.numeric {
    background: var(--primary);
}

.var-type.categorical {
    background: var(--success);
}

.var-type.date {
    background: var(--warning);
}

.var-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.param-group {
    margin-bottom: 16px;
}

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

.param-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    transition: all 0.2s;
}

.param-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26,86,219,0.1);
}

.param-select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    background: var(--bg-card);
    cursor: pointer;
}

.drop-zone {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    margin-bottom: 12px;
    transition: all 0.2s;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.drop-zone.highlight {
    border-color: var(--primary);
    background: rgba(26,86,219,0.05);
}

.drop-zone.has-item {
    border-style: solid;
    border-color: var(--primary);
    background: rgba(26,86,219,0.03);
}

.drop-zone-label {
    font-size: 12px;
    color: var(--text-muted);
}

.drop-zone-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
}

.drop-zone-item .remove-btn {
    cursor: pointer;
    opacity: 0.7;
}

.drop-zone-item .remove-btn:hover {
    opacity: 1;
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26,86,219,0.3);
}

.btn-secondary {
    background: var(--bg-main);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.fitting-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.fitting-category {
    margin-bottom: 12px;
}

.fitting-category-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border);
}

.fitting-option {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.fitting-option:hover {
    border-color: var(--primary);
}

.fitting-option.active {
    border-color: var(--primary);
    background: rgba(26,86,219,0.05);
}

.fitting-option-title {
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 4px;
}

.fitting-option-desc {
    font-size: 11px;
    color: var(--text-muted);
}

.status-message {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-message.success {
    background: rgba(16,185,129,0.1);
    color: var(--success);
}

.status-message.error {
    background: rgba(239,68,68,0.1);
    color: var(--danger);
}

.status-message.info {
    background: rgba(26,86,219,0.1);
    color: var(--primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-change {
    font-size: 12px;
    margin-top: 4px;
}

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

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.4s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

.modification-alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: linear-gradient(135deg, rgba(245,158,11,0.1) 0%, rgba(251,191,36,0.05) 100%);
    border: 1px solid rgba(245,158,11,0.3);
    border-radius: 8px;
    margin-bottom: 16px;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modification-alert-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: rgba(245,158,11,0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--warning);
}

.modification-alert-content {
    flex: 1;
    min-width: 0;
}

.modification-alert-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--warning);
    margin-bottom: 2px;
}

.modification-alert-detail {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.modification-alert-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.modification-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.modification-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

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

.modification-btn-close {
    width: 28px;
    height: 28px;
    padding: 0;
    font-size: 18px;
    line-height: 1;
    color: var(--text-muted);
    background: transparent;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.modification-btn-close:hover {
    background: rgba(0,0,0,0.05);
    color: var(--text-primary);
}

.modification-history-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modification-history-content {
    background: var(--bg-card);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.modification-history-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modification-history-header h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
}

.modification-history-list {
    max-height: 400px;
    overflow-y: auto;
    padding: 12px;
}

.modification-history-item {
    display: flex;
    gap: 12px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 8px;
}

.modification-history-item:last-child {
    margin-bottom: 0;
}

.modification-history-index {
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    flex-shrink: 0;
}

.modification-history-info {
    flex: 1;
}

.modification-history-action {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.modification-history-time {
    font-size: 11px;
    color: var(--text-muted);
}

/* 使用手册样式 */
.manual-container {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.manual-header {
    padding: 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
}

.manual-header h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.manual-header p {
    font-size: 14px;
    opacity: 0.9;
}

.manual-accordion {
    padding: 16px;
}

.manual-section {
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}

.manual-section:last-child {
    margin-bottom: 0;
}

.manual-section-header {
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    background: var(--bg-main);
    transition: all 0.2s;
}

.manual-section-header:hover {
    background: rgba(26,86,219,0.05);
}

.manual-section-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}

.manual-section-title {
    flex: 1;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.manual-section-arrow {
    color: var(--text-muted);
    transition: transform 0.3s;
}

.manual-section.open .manual-section-arrow {
    transform: rotate(180deg);
}

.manual-section-content {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.manual-section.open .manual-section-content {
    padding: 20px;
    max-height: 2000px;
}

.manual-intro {
    padding: 16px;
    background: var(--bg-main);
    border-radius: 8px;
    margin-bottom: 20px;
}

.manual-intro p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
}

.manual-steps {
    display: flex;
    gap: 16px;
}

.manual-step {
    flex: 1;
    display: flex;
    gap: 12px;
    padding: 16px;
    background: var(--bg-main);
    border-radius: 8px;
}

.manual-step-number {
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}

.manual-step-content {
    flex: 1;
}

.manual-step-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.manual-step-desc {
    font-size: 12px;
    color: var(--text-muted);
}

.manual-subsection {
    margin-bottom: 20px;
}

.manual-subsection:last-child {
    margin-bottom: 0;
}

.manual-subsection-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.manual-format-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.manual-list {
    list-style: none;
    padding: 0;
}

.manual-list li {
    padding: 8px 0;
    padding-left: 16px;
    position: relative;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px dashed var(--border);
}

.manual-list li:last-child {
    border-bottom: none;
}

.manual-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

.manual-text {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.manual-chart-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.manual-chart-category {
    background: var(--bg-main);
    border-radius: 8px;
    padding: 16px;
}

.manual-chart-category-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
}

.manual-chart-items {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.manual-chart-item {
    padding: 10px;
    background: var(--bg-card);
    border-radius: 6px;
    border: 1px solid var(--border);
}

.manual-chart-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.manual-chart-desc {
    font-size: 11px;
    color: var(--text-muted);
}

.manual-fitting-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.manual-fitting-item {
    padding: 14px;
    background: var(--bg-main);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.manual-fitting-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.manual-fitting-formula {
    font-family: 'Courier New', monospace;
    font-size: 12px;
    color: var(--primary);
    background: var(--bg-card);
    padding: 4px 8px;
    border-radius: 4px;
    margin-bottom: 6px;
    display: inline-block;
}

.manual-fitting-desc {
    font-size: 11px;
    color: var(--text-muted);
}

.manual-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.manual-metric {
    padding: 14px;
    background: var(--bg-main);
    border-radius: 8px;
    border-left: 3px solid var(--primary);
}

.manual-metric-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.manual-metric-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

.manual-cleaning-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.manual-cleaning-option {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px;
    background: var(--bg-main);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.manual-cleaning-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.manual-cleaning-content {
    flex: 1;
}

.manual-cleaning-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.manual-cleaning-desc {
    font-size: 11px;
    color: var(--text-muted);
}

.manual-options-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.manual-option-group {
    background: var(--bg-main);
    border-radius: 8px;
    padding: 16px;
}

.manual-option-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
}

.manual-export-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.manual-export-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: var(--bg-main);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.manual-export-content {
    flex: 1;
}

.manual-export-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.manual-export-desc {
    font-size: 11px;
    color: var(--text-muted);
}

.manual-faq {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.manual-faq-item {
    padding: 14px;
    background: var(--bg-main);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.manual-faq-q {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.manual-faq-a {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 1200px) {
    .manual-chart-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .manual-options-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .manual-export-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .manual-steps {
        flex-direction: column;
    }
    
    .manual-chart-grid,
    .manual-fitting-grid,
    .manual-metrics,
    .manual-cleaning-options,
    .manual-options-grid,
    .manual-export-grid {
        grid-template-columns: 1fr;
    }
}