/* 案例详情页面样式 */
:root {
    --primary-color: #333;
    --secondary-color: #666;
    --accent-color: #999;
    --light-color: #f5f5f5;
    --dark-color: #222;
    --transition: all 0.3s ease;
    --main-font: 'Noto Serif SC', serif;
}

/* 案例标题区域 */
.case-header {
    background-color: var(--dark-color);
    color: white;
    padding: 95px 0 40px;
    text-align: center;
    font-family: var(--main-font);
}

.case-breadcrumb {
    margin-bottom: 20px;
    font-size: 14px;
    color: var(--accent-color);
}

.case-breadcrumb a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

.case-breadcrumb a:hover {
    color: white;
}

.case-header h1 {
    font-size: 36px;
    margin-bottom: 20px;
    font-weight: 700;
    font-family: var(--main-font);
}

.case-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 20px;
}

.meta-item {
    display: flex;
    align-items: center;
}

.meta-label {
    font-weight: 600;
    margin-right: 5px;
}

.meta-value {
    color: var(--accent-color);
}

/* 案例概述区域 */
.case-overview {
    padding: 80px 0;
    background-color: white;
}

.overview-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.overview-image {
    width: 100%;
    overflow: hidden;
}

.overview-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.overview-image img:hover {
    transform: scale(1.02);
}

.overview-text h2 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-family: var(--main-font);
}

.overview-text p {
    color: var(--secondary-color);
    line-height: 1.8;
    margin-bottom: 15px;
    font-family: var(--main-font);
}

/* 项目挑战区域 */
.case-challenge {
    padding: 80px 0;
    background-color: var(--light-color);
}

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    color: var(--primary-color);
    position: relative;
    font-family: var(--main-font);
}

.section-title:after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 15px auto 0;
}

.challenge-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.challenge-item {
    background-color: white;
    padding: 30px;
    border-left: 3px solid var(--primary-color);
    transition: var(--transition);
}

.challenge-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.challenge-icon {
    font-size: 30px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.challenge-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--primary-color);
    font-family: var(--main-font);
}

.challenge-item p {
    color: var(--secondary-color);
    line-height: 1.6;
}

/* 解决方案区域 */
.case-solution {
    padding: 80px 0;
    background-color: white;
}

.solution-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.solution-text {
    flex: 1;
}

.solution-text p {
    color: var(--secondary-color);
    line-height: 1.8;
    margin-bottom: 20px;
}

.solution-text ol {
    counter-reset: solution-counter;
    padding-left: 0;
}

.solution-text li {
    list-style: none;
    margin-bottom: 30px;
    position: relative;
    padding-left: 40px;
}

.solution-text li:before {
    content: counter(solution-counter);
    counter-increment: solution-counter;
    position: absolute;
    left: 0;
    top: 0;
    width: 30px;
    height: 30px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.solution-text h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-family: var(--main-font);
}

.solution-image {
    flex: 1;
    overflow: hidden;
}

.solution-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.solution-image img:hover {
    transform: scale(1.02);
}

/* 项目展示区域 */
.case-showcase {
    padding: 80px 0;
    background-color: var(--light-color);
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.showcase-item {
    position: relative;
    overflow: hidden;
}

.showcase-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.showcase-item:hover img {
    transform: scale(1.05);
}

.showcase-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0,0,0,0.7);
    color: white;
    padding: 15px;
    font-size: 16px;
    text-align: center;
    transition: var(--transition);
}

.showcase-item:hover .showcase-caption {
    background-color: rgba(0,0,0,0.9);
}

/* 项目成果区域 */
.case-results {
    padding: 80px 0;
    background-color: white;
}

.results-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.results-item {
    text-align: center;
    padding: 30px 20px;
    border: 1px solid var(--accent-color);
    transition: var(--transition);
}

.results-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.results-number {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-family: var(--main-font);
}

.results-text {
    color: var(--secondary-color);
    font-size: 16px;
}

.results-description {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.results-description p {
    color: var(--secondary-color);
    line-height: 1.8;
    margin-bottom: 15px;
}

/* 相关案例区域 */
.case-related {
    padding: 80px 0;
    background-color: var(--light-color);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.related-item {
    overflow: hidden;
}

.related-image {
    position: relative;
    overflow: hidden;
}

.related-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.related-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
}

.related-item:hover .related-overlay {
    opacity: 1;
}

.related-item:hover img {
    transform: scale(1.1);
}

.related-overlay h3 {
    color: white;
    font-size: 20px;
    margin-bottom: 15px;
    text-align: center;
    padding: 0 15px;
}

.btn-more {
    display: inline-block;
    padding: 8px 20px;
    background-color: transparent;
    color: white;
    border: 2px solid white;
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.btn-more:hover {
    background-color: white;
    color: var(--primary-color);
}

/* 联系我们区域 */
.case-contact {
    padding: 80px 0;
    background-color: var(--dark-color);
    color: white;
    text-align: center;
}

.case-contact h2 {
    font-size: 32px;
    margin-bottom: 15px;
    font-family: var(--main-font);
}

.case-contact p {
    font-size: 18px;
    margin-bottom: 30px;
    color: var(--accent-color);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: transparent;
    color: white;
    border: 2px solid white;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
}

.btn:hover {
    background-color: white;
    color: var(--dark-color);
}

/* 响应式设计 */
@media (min-width: 768px) {
    .overview-content {
        flex-direction: row;
    }
    
    .overview-image {
        flex: 3;
    }
    
    .overview-text {
        flex: 2;
        padding-left: 40px;
    }
    
    .solution-content {
        flex-direction: row;
    }
    
    .solution-text {
        flex: 3;
        padding-right: 40px;
    }
    
    .solution-image {
        flex: 2;
    }
}

@media (max-width: 992px) {
    .challenge-content {
        grid-template-columns: 1fr;
    }
    
    .results-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .case-meta {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }
    
    .showcase-grid {
        grid-template-columns: 1fr;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-text li {
        padding-left: 30px;
    }
    
    .solution-text li:before {
        width: 24px;
        height: 24px;
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    .results-content {
        grid-template-columns: 1fr;
    }
    
    .case-header h1 {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 26px;
    }
}