:root {
    --bg: #0b0c10; /* deep background similar to dark hero */
    --card: #121319; /* card background */
    --muted: #9aa3af; /* secondary text */
    --text: #f5f7fa; /* primary text */
    --accent: #3b82f6; /* blue accent */
    --ring: rgba(59,130,246,.35);
    --radius: 16px;
    --shadow: 0 10px 30px rgba(0,0,0,.35);
}

/* 主容器 */
.container {
    display: flex;
    flex-direction: column;
    position: relative;
    background: var(--nav-bg);
    margin: auto;
    max-width: 1856px;
    width: 100%;
}

.navbar-container {
    display: flex;
    flex-direction: column;
}

/* 内容区域 */
.content {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: var(--text-light);
    backdrop-filter: blur(10px);
    background: linear-gradient(to bottom, 
        rgba(46,46,56,0.8) 0%, 
        rgba(46,46,56,1) 30px);
    padding: 90px 0 0 0;
    z-index: 0;
    box-shadow: 0 .625rem 1.875rem rgba(0,0,0,0.3);
}

.img-container {
    position: relative;
    width: 100%; /* 防止溢出 */
    height: 100%;
    display: flex;   /* 新增：启用flex布局 */
    justify-content: center; /* 水平居中内容 */
    align-items: center; /* 垂直居中内容 */
    margin: 0 auto; /* 双保险水平居中 */
    overflow: hidden;
    /* margin-top: 6.875rem;  与导航栏重叠 */
    z-index: 1;
}

.img-container img {
    display: block; /* 消除图片底部间隙 */
    min-height: 425px; /* 确保图片高度 */
    max-width: 100%; /* 响应式适配 */
    height: 100%;
    object-fit: cover;
    /* 创建下部分虚化效果 */
    -webkit-mask-image: linear-gradient(to bottom, 
        rgba(46,46,56,1) 0%, 
        rgba(46,46,56,1) 70%, 
        rgba(46,46,56,0) 100%);
    mask-image: linear-gradient(to bottom, 
        rgba(46,46,56,1) 0%, 
        rgba(46,46,56,1) 70%, 
        rgba(46,46,56,0) 100%);
}

.serImgA1 {
    display: flex;
    position: absolute;
    bottom: 200px;
    left: 70px;
    padding: 0;
    max-width: 25rem;
    backdrop-filter: blur(1px);
    z-index: 100;
    color: var(--text-light);
    font-size: 3.5rem;
    font-weight: 700;
}

.serImgA2 {
    display: flex;
    position: absolute;
    bottom: 130px;
    left: 70px;
    padding: 0 15px;
    max-width: 50rem;
    backdrop-filter: blur(1px);
    z-index: 100;
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.8;
    border-left: 2px solid var(--primary);
}

.content h1 {
    color: var(--primary);
    font-size: 2.5rem;
    font-weight: 500;
    margin-bottom: 1.25rem;
}

.content p1 {
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: .625rem;
}

.content p2 {
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: .625rem;
}

.serPurpose {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 40px 0;
}

.serPurpose1 {
    position: relative;
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 0 5rem;
    width: 50%;
    height: 50%;
}

.serProfessionals {
    display: flex;
    flex-direction: column;
    margin: 0 10rem;
}

.serProfessional {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 230, 255, 0.2);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    padding: 20px 40px;
    margin-bottom: 40px;
}

.serProfessional::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, #ffcc00, #00ff9d);
}

.serPro1 {
    display: flex;
    flex: 1;
    width: 50%;
    justify-content: center;
    align-items: center;
    padding-left: 80px;
}
.serPro1 img {
    display: block;
    object-fit: contain;
    max-width: 100%;
    height: auto;
}

.serPro2 {
    flex: 1;
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 5rem;
}

.serPro2 h1 {
    font-size: 2rem;
    color: #4ce0b3;
}

.footer-aboutus {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    position: relative;
    max-width: 116rem;
    vertical-align: top;
    margin: 0 auto;
    z-index: 200;
}

@media (max-width: 1344px) {
    .content h1 {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    .content p1, .content p2 {
        font-size: 0.875rem;
        margin-bottom: .625rem;
    }
}

@media (max-width: 1152px) {
    .content h1 {
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }
    .content p1, .content p2 {
        font-size: 0.7rem;
        margin-bottom: .225rem;
    }

    .serProfessionals {
        display: flex;
        flex-direction: column;
        margin: 0 5rem;
    }

    .serProfessional {
        padding: 15px;
    }

    .serPro2 {
        padding: 0 2rem;
    }
}

@media (max-width: 900px) {
    .serImgA2 {
        bottom: 50px;
        line-height: 1.5;
    }

    .serPurpose1 {
        padding: 0 15px;
    }

    #serC1h1 {
        margin-left: 15px !important;
    }

    .serProfessionals {
        margin: 0 15px;
    }

    .serProfessional {
        flex-direction: column;
    }

    .serPro1 {
        padding: 10px 15px 0 15px;
        width: 100%;
    }

    .serPro2 {
        padding: 0 15px;
        width: 100%;
    }
}