/* 输配电碳核算专项实操模块样式 - 重构版本 */
/* 清晰逻辑，专业设计，客观中性的教学界面 */

:root {
    --carbon-primary: #3490dc;
    --carbon-forest: #0d4f3c;
    --carbon-success: #059669;
    --carbon-warning: #f59e0b;
    --carbon-danger: #dc3545;
    --carbon-info: #0ea5e9;
    
    /* 梯队色彩系统 */
    --tier-1-primary: #059669;    /* 金牌 - 绿色 */
    --tier-1-light: #ecfdf5;
    --tier-2-primary: #3b82f6;    /* 银牌 - 蓝色 */
    --tier-2-light: #eff6ff;
    --tier-3-primary: #f59e0b;    /* 铜牌 - 橙色 */
    --tier-3-light: #fffbeb;
    
    /* 实验阶段 */
    --experimental: #8b5cf6;
    --experimental-light: #f3f4f6;
}

.power-transmission-slide {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
    padding: 2rem;
}

/* 基础概念展示 */
.concept-foundation {
    margin: 2rem 0;
}

.power-system-characteristics {
    margin-top: 1.5rem;
}

.characteristic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.characteristic-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid #e5e7eb;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.characteristic-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--carbon-primary), var(--carbon-forest));
}

.characteristic-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    border-color: var(--carbon-primary);
}

.char-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.characteristic-card h4 {
    color: var(--carbon-forest);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.characteristic-card p {
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* 方法论对比系统 */
.methodology-comparison-section {
    margin: 3rem 0;
}

.methodology-introduction {
    background: #f8f9fa;
    border-left: 4px solid var(--carbon-info);
    padding: 1.5rem;
    border-radius: 0 8px 8px 0;
    margin-bottom: 2rem;
}

.intro-text {
    font-size: 1.05rem;
    color: #374151;
    margin: 0;
    line-height: 1.6;
}

.methodology-hierarchy {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

/* 方法论梯队 */
.method-tier {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.method-tier.tier-1 {
    border-color: var(--tier-1-primary);
    background: linear-gradient(135deg, var(--tier-1-light) 0%, white 100%);
}

.method-tier.tier-2 {
    border-color: var(--tier-2-primary);
    background: linear-gradient(135deg, var(--tier-2-light) 0%, white 100%);
}

.method-tier.tier-3 {
    border-color: var(--tier-3-primary);
    background: linear-gradient(135deg, var(--tier-3-light) 0%, white 100%);
}

.method-tier h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tier-description {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid currentColor;
}

.tier-description p {
    margin: 0;
    color: #4b5563;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* 方法论卡片 */
.method-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.method-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    border: 2px solid #e5e7eb;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.method-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.method-card.primary {
    border-color: var(--tier-1-primary);
}

.method-card.primary:hover {
    border-color: var(--tier-1-primary);
    box-shadow: 0 8px 25px rgba(5, 150, 105, 0.2);
}

.method-card.secondary {
    border-color: var(--tier-2-primary);
}

.method-card.secondary:hover {
    border-color: var(--tier-2-primary);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.2);
}

.method-card.experimental {
    border-color: var(--tier-3-primary);
    background: linear-gradient(135deg, var(--experimental-light) 0%, white 100%);
}

.method-card.experimental:hover {
    border-color: var(--tier-3-primary);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.2);
}

/* 方法论卡片头部 */
.method-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.method-icon {
    font-size: 2rem;
    margin-right: 0.8rem;
}

.method-header h5 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #111827;
    margin: 0;
    flex: 1;
}

.method-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.method-badge.gold {
    background: #fbbf24;
    color: #92400e;
}

.method-badge.silver {
    background: #e5e7eb;
    color: #374151;
}

.method-badge.bronze {
    background: #fed7aa;
    color: #ea580c;
}

/* 发展状态指示器 */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: #fef3c7;
    color: #d97706;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

.status-indicator.developing {
    background: #fef3c7;
    color: #d97706;
}

.method-desc {
    color: #4b5563;
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0.5rem 0 1rem 0;
}

/* 统计信息 */
.method-stats {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f3f4f6;
    font-size: 0.85rem;
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-label {
    font-weight: 500;
    color: #6b7280;
}

.stat-value {
    font-weight: 600;
    color: #111827;
    text-align: right;
}

.stat-item.advantages .stat-value {
    color: var(--carbon-success);
}

.stat-item.limitations .stat-value {
    color: var(--carbon-warning);
}

/* 详细对比表格 */
.detailed-comparison {
    margin: 3rem 0;
}

.comparison-table-container {
    overflow-x: auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

.comparison-table th {
    background: #f9fafb;
    font-weight: 600;
    color: #111827;
    position: sticky;
    top: 0;
}

.comparison-table th:first-child {
    background: #374151;
    color: white;
}

.tier-1-col {
    background: var(--tier-1-light) !important;
    color: var(--tier-1-primary) !important;
}

.tier-2-col {
    background: var(--tier-2-light) !important;
    color: var(--tier-2-primary) !important;
}

.tier-3-col {
    background: var(--tier-3-light) !important;
    color: var(--tier-3-primary) !important;
}

.tier-1-cell {
    background: var(--tier-1-light);
    border-left: 4px solid var(--tier-1-primary);
}

.tier-2-cell {
    background: var(--tier-2-light);
    border-left: 4px solid var(--tier-2-primary);
}

.tier-3-cell {
    background: var(--tier-3-light);
    border-left: 4px solid var(--tier-3-primary);
}

/* 碳流理论分析 */
.carbon-flow-analysis {
    margin: 3rem 0;
}

.theory-overview {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.theory-description {
    font-size: 1.05rem;
    color: #374151;
    line-height: 1.6;
    margin: 1rem 0 2rem 0;
}

.theory-foundation {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.math-content {
    margin-top: 1rem;
}

.formula-group {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.formula-item {
    background: white;
    border-radius: 8px;
    padding: 1rem;
    border-left: 4px solid var(--carbon-primary);
}

.formula {
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--carbon-forest);
    background: #f3f4f6;
    padding: 0.75rem;
    border-radius: 6px;
    margin: 0.5rem 0;
    text-align: center;
    border: 1px solid #d1d5db;
}

.formula-explanation {
    font-size: 0.85rem;
    color: #6b7280;
    font-style: italic;
    margin: 0.5rem 0 0 0;
}

.theory-evaluation {
    margin-top: 2rem;
}

.evaluation-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 1.5rem;
}

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

.theory-advantages,
.theory-limitations {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    border: 2px solid transparent;
}

.theory-advantages {
    border-color: var(--carbon-success);
    background: linear-gradient(135deg, #ecfdf5 0%, white 100%);
}

.theory-limitations {
    border-color: var(--carbon-warning);
    background: linear-gradient(135deg, #fffbeb 0%, white 100%);
}

.theory-advantages h4,
.theory-limitations h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.advantages-list,
.limitations-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.advantages-list li,
.limitations-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 0.9rem;
    line-height: 1.5;
}

.advantages-list li:last-child,
.limitations-list li:last-child {
    border-bottom: none;
}

/* 实用建议 */
.practical-recommendations {
    margin: 3rem 0;
}

.recommendation-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.rec-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    border: 2px solid #e5e7eb;
    transition: all 0.3s ease;
    text-align: center;
}

.rec-card.primary {
    border-color: var(--tier-1-primary);
    background: linear-gradient(135deg, var(--tier-1-light) 0%, white 100%);
}

.rec-card.secondary {
    border-color: var(--tier-2-primary);
    background: linear-gradient(135deg, var(--tier-2-light) 0%, white 100%);
}

.rec-card.tertiary {
    border-color: var(--tier-3-primary);
    background: linear-gradient(135deg, var(--tier-3-light) 0%, white 100%);
}

.rec-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.rec-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.rec-card h4 {
    color: var(--carbon-forest);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.rec-card p {
    color: #4b5563;
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0.5rem 0;
}

/* 官方数据显示 */
.official-data-display {
    margin: 2rem 0;
}

.data-overview {
    margin-bottom: 2rem;
}

.data-cards {
    display: flex;
    justify-content: center;
}

.data-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--carbon-success);
    position: relative;
    overflow: hidden;
    min-width: 300px;
}

.data-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: linear-gradient(90deg, var(--carbon-success), var(--carbon-primary));
}

.data-header {
    margin-bottom: 1.5rem;
}

.data-header h3 {
    color: var(--carbon-forest);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.data-badge {
    background: var(--carbon-success);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.data-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--carbon-success);
    margin: 1rem 0;
}

.data-unit {
    font-size: 1.1rem;
    color: #6b7280;
    font-weight: 500;
}

.data-note {
    color: #4b5563;
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* 区域数据对比 */
.regional-data {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.regional-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.region-card {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 1rem;
    border-left: 4px solid var(--carbon-primary);
    transition: all 0.3s ease;
    position: relative;
}

.region-card:hover {
    background: #f1f5f9;
    transform: translateX(2px);
}

.region-name {
    font-weight: 600;
    color: var(--carbon-forest);
    margin-bottom: 0.5rem;
}

.region-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--carbon-primary);
    display: inline-block;
    margin-right: 0.5rem;
}

.region-unit {
    font-size: 0.8rem;
    color: #6b7280;
}

.region-bar {
    height: 4px;
    background: var(--carbon-primary);
    border-radius: 2px;
    margin-top: 0.5rem;
    transition: width 0.3s ease;
}

/* 计算器容器 */
.calculator-container {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    margin: 2rem 0;
}

.calculator-introduction {
    margin-bottom: 2rem;
}

/* 模拟器控制 */
.simulator-controls {
    margin-bottom: 3rem;
}

.control-group {
    margin-bottom: 2rem;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 1.5rem;
}

.control-label {
    display: block;
    font-weight: 600;
    color: var(--carbon-forest);
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

/* 区域选择器 */
.region-selector {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.region-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.region-btn {
    padding: 0.5rem 1rem;
    border: 2px solid #e5e7eb;
    background: white;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    font-weight: 500;
}

.region-btn:hover {
    border-color: var(--carbon-primary);
    background: #eff6ff;
}

.region-btn.active {
    background: var(--carbon-primary);
    color: white;
    border-color: var(--carbon-primary);
}

.selected-region-info {
    background: white;
    border-radius: 6px;
    padding: 1rem;
    border: 1px solid #d1d5db;
    font-size: 0.9rem;
    color: #374151;
}

.selected-region-info span:first-child {
    font-weight: 600;
    margin-right: 0.5rem;
}

.selected-region-info span:nth-child(2) {
    font-weight: 600;
    color: var(--carbon-primary);
    margin-right: 0.5rem;
}

.selected-region-info span:nth-child(3) {
    font-weight: 700;
    color: var(--carbon-success);
    font-size: 1.1rem;
    margin: 0 0.25rem;
}

/* 输入和滑块 */
.input-with-slider {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.input-with-slider input[type="number"] {
    width: 120px;
    padding: 0.5rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 0.9rem;
}

.slider {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: #e5e7eb;
    outline: none;
    -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--carbon-primary);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--carbon-primary);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* 损耗设置 */
.loss-settings {
    border: 2px solid var(--carbon-warning);
    background: linear-gradient(135deg, #fffbeb 0%, white 100%);
}

.loss-controls {
    display: grid;
    gap: 1rem;
}

.loss-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    background: white;
    border-radius: 6px;
    border: 1px solid #e5e7eb;
}

.loss-item label {
    font-weight: 500;
    color: var(--carbon-forest);
    min-width: 120px;
}

/* 计算结果展示 */
.calculation-results {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 2rem;
    margin-top: 2rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.result-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    border: 2px solid #e5e7eb;
    transition: all 0.3s ease;
}

.result-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.result-card.primary {
    border-color: var(--carbon-success);
    background: linear-gradient(135deg, #ecfdf5 0%, white 100%);
}

.result-card.secondary {
    border-color: var(--carbon-warning);
    background: linear-gradient(135deg, #fffbeb 0%, white 100%);
}

.result-card.tertiary {
    border-color: var(--carbon-info);
    background: linear-gradient(135deg, #eff6ff 0%, white 100%);
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.result-icon {
    font-size: 1.5rem;
}

.result-header h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--carbon-forest);
    margin: 0;
}

.result-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--carbon-primary);
    margin: 0.5rem 0;
}

.result-unit {
    font-size: 0.8rem;
    color: #6b7280;
    font-weight: 500;
}

.result-desc {
    font-size: 0.75rem;
    color: #6b7280;
    margin-top: 0.5rem;
}

/* 总结果显示 */
.total-result {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    background: white;
    border-radius: 12px;
    padding: 2rem;
    border: 3px solid var(--carbon-success);
}

@media (max-width: 768px) {
    .total-result {
        flex-direction: column;
        text-align: center;
    }
}

.total-card {
    flex: 1;
    text-align: center;
}

.total-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.total-icon {
    font-size: 2rem;
}

.total-header h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--carbon-forest);
    margin: 0;
}

.total-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--carbon-success);
    margin: 0.5rem 0;
}

.total-unit {
    font-size: 1.1rem;
    color: #6b7280;
    font-weight: 600;
}

.total-breakdown {
    font-size: 0.8rem;
    color: #6b7280;
    margin-top: 0.5rem;
}

/* 效率指示器 */
.efficiency-indicator {
    flex: 1;
    max-width: 300px;
}

.efficiency-label {
    font-weight: 600;
    color: var(--carbon-forest);
    margin-bottom: 0.5rem;
}

.efficiency-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--carbon-primary);
    margin-bottom: 1rem;
}

.efficiency-bar {
    height: 12px;
    background: #e5e7eb;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.efficiency-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--carbon-success), var(--carbon-primary));
    border-radius: 6px;
    transition: width 0.5s ease;
    position: relative;
}

/* 案例分析 */
.case-study {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    margin: 2rem 0;
}

.case-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e5e7eb;
}

.case-header h3 {
    color: var(--carbon-forest);
    margin: 0;
    font-size: 1.3rem;
}

.case-badge {
    background: var(--carbon-info);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
}

.case-content {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 2rem;
}

@media (max-width: 1024px) {
    .case-content {
        grid-template-columns: 1fr;
    }
}

.case-scenario {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 1.5rem;
}

.scenario-list {
    list-style: none;
    padding: 0;
    margin-top: 1rem;
}

.scenario-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #e5e7eb;
    font-size: 0.9rem;
}

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

.case-calculation {
    background: white;
    border: 2px solid var(--carbon-primary);
    border-radius: 8px;
    padding: 1.5rem;
}

.calc-steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.calc-step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid var(--carbon-primary);
}

.step-number {
    background: var(--carbon-primary);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.step-content h5 {
    margin: 0 0 0.5rem 0;
    color: var(--carbon-forest);
    font-size: 1rem;
}

.step-content p {
    margin: 0;
    color: #4b5563;
    font-size: 0.9rem;
}

.case-insights {
    background: #ecfdf5;
    border-radius: 8px;
    padding: 1.5rem;
    border: 2px solid var(--carbon-success);
}

.insights-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.insight-card {
    background: white;
    border-radius: 6px;
    padding: 1rem;
    text-align: center;
    border: 1px solid #d1fae5;
}

.insight-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.insight-card h5 {
    margin: 0 0 0.5rem 0;
    color: var(--carbon-forest);
    font-size: 0.9rem;
}

.insight-card p {
    margin: 0;
    color: #4b5563;
    font-size: 0.8rem;
}

/* 总结和建议 */
.summary-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

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

.key-takeaways {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.takeaway-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.takeaway-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid var(--carbon-primary);
}

.takeaway-icon {
    background: var(--carbon-success);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.takeaway-content h4 {
    margin: 0 0 0.5rem 0;
    color: var(--carbon-forest);
    font-size: 1rem;
}

.takeaway-content p {
    margin: 0;
    color: #4b5563;
    font-size: 0.9rem;
    line-height: 1.5;
}

.next-steps {
    background: #ecfdf5;
    border-radius: 12px;
    padding: 2rem;
    border: 2px solid var(--carbon-success);
}

.steps-checklist {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.step-item input[type="checkbox"] {
    margin-top: 0.25rem;
    transform: scale(1.2);
}

.step-item label {
    color: #374151;
    font-size: 0.9rem;
    line-height: 1.5;
    cursor: pointer;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .power-transmission-slide {
        padding: 1rem;
    }
    
    .characteristic-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .method-cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .comparison-table-container {
        font-size: 0.8rem;
    }
    
    .input-with-slider {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .region-options {
        flex-direction: column;
    }
    
    .region-btn {
        text-align: left;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
}