.hengsheng_introduction {
    width: 100%;
    padding: 0;
    margin: 0;
    padding-top: 45px;
    background: #f6f6f6;
}

@keyframes floatUp {
    0% {
        opacity: 0;
        transform: translateX(-50%) translateY(50px);
    }
    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.introduction-top {
    position: relative;
    z-index: 2;
    margin-bottom: -200px;
}

.introduction-top h2 {
    font-family: var(--font-family-bold);
    font-size: clamp(32px, 4vw, 60px);
    font-weight: 700;
    color: #26292B;
    text-align: center;
    margin-bottom: clamp(30px, 4vw, 60px);
}

.top-content {
    display: flex;
    background: #fff;
}

.top-left {
    flex: 1;
    aspect-ratio: 57/65;
}

.top-left img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.top-right {
    flex: 1;
    padding: clamp(20px, 3vw, 35px);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.top-right .subtitle {
    font-family: var(--font-family-semi-bold);
    font-size: clamp(18px, 2vw, 26px);
    font-weight: 600;
    color: #26292B;
    margin-bottom: clamp(20px, 3vw, 36px);
    line-height: 1.4;
    border-left: 2px solid #000;
    padding-left: clamp(15px, 2vw, 26px);
}

.top-right .description {
    font-family: var(--font-family-semi-bold);
    font-size: clamp(14px, 1.5vw, 22px);
    color: #7D7D7D;
    line-height: 1.5;
    margin-bottom: clamp(30px, 4vw, 56px);
    padding-left: clamp(15px, 2vw, 26px);
    display: -webkit-box;
    -webkit-line-clamp: 10;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.introduction-bottom {
    position: relative;
    z-index: 1;
    aspect-ratio: 140/83;
}

.bottom-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.bottom-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.bottom-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, #F6F6F6 0%, rgba(255, 255, 255, 0.00) 100%);
}

.bottom-content {
    position: absolute;
    bottom: clamp(100px, 12vw, 214px);
    left: 50%;
    transform: translateX(-50%) translateY(50px);
    z-index: 2;
    text-align: center;
    width: calc(1240/1920*100%);
    padding: clamp(30px, 3vw, 46px) clamp(20px, 3vw, 40px) clamp(30px, 3vw, 50px);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.70);
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: all 1s ease-out;
}

.bottom-content.animate {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.bottom-content h3 {
    color: #26292B;
    font-family: var(--font-family-bold);
    font-size: clamp(28px, 4vw, 60px);
    font-weight: 700;
    margin-bottom: clamp(10px, 1.5vw, 15px);
    text-transform: uppercase;
}

.bottom-content h4 {
    font-size: clamp(16px, 1.5vw, 20px);
    font-weight: bold;
    margin-bottom: clamp(15px, 2vw, 20px);
    color: #333;
}

.bottom-content p {
    font-family: var(--font-family-semi-bold);
    font-size: clamp(14px, 1.5vw, 22px);
    line-height: 1.5;
    color: #7D7D7D;
    width: calc(800/1240*100%);
    max-width: 800px;
    margin: 0 auto;
}

.bottom-content .company-name {
    color: #FF6B35;
}

@media (max-width: 1024px) {
    .introduction-top {
        margin-bottom: -150px;
    }
    
    .top-content {
        flex-direction: column;
    }
    
    .top-left {
        aspect-ratio: 16/9;
    }
    
    .top-right {
        border-left: none;
        border-top: 2px solid #000;
    }
    
    .top-right .subtitle,
    .top-right .description,
    .top-right .btn {
        padding-left: 0;
        margin-left: 0;
        border-left: none;
    }
    
    .introduction-bottom {
        aspect-ratio: 16/10;
    }
    
    .bottom-content {
        width: 90%;
        bottom: clamp(80px, 10vw, 150px);
    }
}

@media (max-width: 768px) {
    .hengsheng_introduction {
        padding-top: 30px;
    }
    
    .introduction-top {
        margin-bottom: -100px;
    }
    
    .introduction-top h2 {
        margin-bottom: 20px;
    }
    
    .top-right {
        padding: 20px;
    }
    
    .top-right .subtitle {
        margin-bottom: 15px;
    }
    
    .top-right .description {
        margin-bottom: 20px;
        -webkit-line-clamp: 6;
    }
    
    .introduction-bottom {
        aspect-ratio: 4/3;
    }
    
    .bottom-content {
        width: 95%;
        padding: 20px;
        bottom: 60px;
    }
    
    .bottom-content h3 {
        margin-bottom: 10px;
    }
    
    .bottom-content p {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .introduction-top {
        margin-bottom: -60px;
    }
    
    .top-right .description {
        -webkit-line-clamp: 4;
    }
    
    .introduction-bottom {
        aspect-ratio: 1/1;
    }
    
    .bottom-content {
        bottom: 40px;
        padding: 15px;
    }
}