/* ============================================================
   成功案例页面专属样式
   ============================================================ */

/* 横幅图 */
.page-banner {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.banner-image {
    width: 100%;
    height: 100%;
}

.banner-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0, 61, 122, 0.8) 0%, rgba(0, 61, 122, 0.3) 100%);
    display: flex;
    align-items: center;
}

.banner-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

.banner-title {
    font-size: 48px;
    color: #ffffff;
    font-weight: 300;
    margin: 0 0 10px 0;
    letter-spacing: 2px;
}

.banner-subtitle {
    font-size: 28px;
    color: #ffffff;
    font-weight: 400;
    margin: 0 0 20px 0;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.9);
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: #ffffff;
}

.breadcrumb span {
    color: rgba(255, 255, 255, 0.6);
}

/* 内容区 */
.page-content {
    padding: 60px 0;
    background-color: #f5f5f5;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 40px;
}

/* 侧边栏 */
.sidebar {
    background-color: #ffffff;
    padding: 0;
    height: fit-content;
    position: sticky;
    top: 90px;
}

.sidebar-title {
    font-size: 20px;
    color: #ffffff;
    background-color: #4a6fa5;
    padding: 20px;
    margin: 0;
    font-weight: 500;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
}

.sidebar-nav-item {
    padding: 15px 20px;
    font-size: 15px;
    color: #333333;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.2s;
    position: relative;
}

.sidebar-nav-item:hover {
    background-color: #f8f8f8;
    color: #4a6fa5;
    padding-left: 25px;
}

.sidebar-nav-item.active {
    color: #2e549a;
    font-weight: 500;
}

.sidebar-nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background-color: #2e549a;
}

/* 案例列表 */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.case-item {
    background-color: #ffffff;
    display: flex;
    gap: 30px;
    padding: 30px;
    overflow: hidden;
    transition: box-shadow 0.3s;
    border-bottom: 1px solid #f0f0f0;
}

.case-item:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.case-item.reverse {
    flex-direction: row;
}

.case-image {
    flex-shrink: 0;
    width: 290px;
    height: 180px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

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

.case-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.case-title {
    font-size: 24px;
    color: #333333;
    font-weight: 500;
    margin-bottom: 16px;
}

.case-desc {
    font-size: 15px;
    color: #666666;
    line-height: 1.8;
    margin-bottom: 18px;
}

.case-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.case-tag {
    display: inline-flex;
    align-items: center;
    height: 28px;
    padding: 0 12px;
    border: 1px solid #dfe6ee;
    color: #4a6fa5;
    font-size: 13px;
    border-radius: 999px;
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    color: #4a6fa5;
    font-weight: 500;
    transition: all 0.2s;
    width: fit-content;
}

.case-link:hover {
    color: #ff6b35;
    gap: 15px;
}

.case-link i {
    font-size: 14px;
    transition: transform 0.2s;
}

.case-link:hover i {
    transform: translateX(5px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .banner-title {
        font-size: 40px;
    }

    .banner-subtitle {
        font-size: 24px;
    }

    .content-wrapper {
        grid-template-columns: 220px 1fr;
        gap: 30px;
    }

    .case-item {
        flex-direction: column;
        padding: 25px;
    }

    .case-item.reverse {
        flex-direction: column;
    }

    .case-image {
        width: 100%;
        height: 240px;
    }
}

@media (max-width: 768px) {
    .page-banner {
        height: 300px;
    }

    .banner-title {
        font-size: 32px;
    }

    .banner-subtitle {
        font-size: 20px;
    }

    .breadcrumb {
        font-size: 13px;
    }

    .page-content {
        padding: 40px 0;
    }

    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .sidebar {
        position: static;
    }

    .case-image {
        height: 200px;
    }
}