.case-hero {
    background: linear-gradient(rgba(26, 58, 95, 0.85), rgba(44, 108, 140, 0.85)), url('/pc/img/case-ad.jpeg');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 6rem 5%;
    text-align: center;
}

.case-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.breadcrumb {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 1rem 0;
}

.breadcrumb li {
    margin: 0 0.5rem;
}

.breadcrumb a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--accent);
}

.breadcrumb li:not(:last-child):after {
    content: '>';
    margin-left: 1rem;
    color: rgba(255,255,255,0.8);
}

/* 案例筛选 */
.case-filter {
    padding: 3rem 5%;
    background: white;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    /*color: var(--primary);*/
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title h2:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--accent);
}

.filter-options {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-options button {
    padding: 0.8rem 1.5rem;
    background: var(--light);
    border: none;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-options button.active,
.filter-options button:hover {
    background: var(--primary);
    color: white;
}

.search-bar {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-bar input {
    width: 100%;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 50px;
    padding-left: 3rem;
    font-size: 1rem;
}

.search-bar i {
    position: absolute;
    left: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
}

/* 案例展示 */
.case-showcase {
    padding: 4rem 5%;
    background: var(--light);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.case-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.case-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.case-content {
    padding: 1.5rem;
}

.case-tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--accent);
    color: white;
    border-radius: 50px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.case-content h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.case-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--gray);
}

.case-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.case-content p {
    color: var(--gray);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.case-link {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.8rem 1.5rem;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
}

.case-link:hover {
    background: var(--secondary);
}

/* 数字统计 */
.case-stats {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 6rem 5%;
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    padding: 2rem;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.2);
}

.stat-item .number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: var(--accent);
}

.stat-item p {
    color: rgba(255,255,255,0.9);
}

/* 客户证言 */
.testimonials {
    padding: 6rem 5%;
    background: white;
}

.testimonial-slider {
    max-width: 1000px;
    margin: 3rem auto 0;
    position: relative;
    overflow: hidden;
}

.testimonial-track {
    display: flex;
    transition: var(--transition);
}

.testimonial-card {
    min-width: 100%;
    padding: 2rem;
    box-sizing: border-box;
}

.testimonial-content {
    background: var(--light);
    padding: 2rem;
    border-radius: 10px;
    position: relative;
}

.testimonial-content:before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 4rem;
    color: rgba(0,0,0,0.05);
    font-family: Georgia, serif;
}

.testimonial-content p {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--dark);
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h4 {
    color: var(--primary);
    margin-bottom: 0.3rem;
}

.author-info p {
    color: var(--gray);
    font-size: 0.9rem;
    font-style: normal;
}

.testimonial-nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.testimonial-nav button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: #ddd;
    cursor: pointer;
    transition: var(--transition);
}

.testimonial-nav button.active {
    background: var(--accent);
    transform: scale(1.3);
}

/* 合作伙伴 */
.partners {
    padding: 4rem 5%;
    background: var(--light);
}

.partner-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-top: 3rem;
}

.partner-item {
    flex: 1;
    min-width: 150px;
    max-width: 200px;
    padding: 1.5rem;
    background: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
}

.partner-item:hover {
    filter: grayscale(0);
    opacity: 1;
}

.partner-item img {
    max-width: 100%;
    max-height: 60px;
    object-fit: contain;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: 4rem;
    gap: 0.5rem;
}

.pagination a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    transition: var(--transition);
}

.pagination a:hover,
.pagination a.active {
    background: var(--primary);
    color: white;
}

@media (max-width: 768px) {
    .case-hero h1 {
        font-size: 2.5rem;
    }

    .filter-options {
        flex-direction: column;
        align-items: center;
    }

    .filter-options button {
        width: 100%;
        max-width: 300px;
    }

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

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

@media (max-width: 480px) {
    .case-hero h1 {
        font-size: 2rem;
    }

    .section-title h2 {
        font-size: 2rem;
    }

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

    .partner-item {
        min-width: 120px;
        padding: 1rem;
    }
}