.main-banner .left-content .introduction {
    width: 690px;
    /* text-align: center; */
}

.main-banner .left-content h3 {
    font-size: 64px;
    font-weight: 700;
    color: #1F2326;
    line-height: 90px;
    letter-spacing: 2px;
}

.main-banner .left-content h2 {
    font-size: 108px;
    font-weight: 700;
    color: #FE541F;
    line-height: 180px;
}

.main-banner .left-content h1 {
    font-size: 20px;
    line-height: 30px;
    color: #1F2326;
    font-weight: 500;
    margin-bottom: 80px;
    max-width: 560px;
}

/* our-services */
.our-services {
    background: linear-gradient(to bottom,
            transparent 0%,
            transparent calc(100% - 186px),
            rgba(31, 35, 38, 1) calc(100% - 186px),
            rgba(31, 35, 38, 1) 100%) right,
        linear-gradient(to bottom,
            rgba(248, 248, 248, 1) 0%,
            rgba(248, 248, 248, 1) calc(100% - 186px)) right;
    background-size: 50% 100%;
    background-repeat: no-repeat;
    overflow: hidden;
}

.our-services .container .services-bg .gray {
    background-color: rgba(248, 248, 248, 1);
    height: calc(100% - 186px);
}

.our-services .container .services-bg .black {
    background-color: rgba(31, 35, 38, 1);
    height: 185px;
}

.our-services .bottom-text {
    padding: 44px 56px;
}

/* 
---------------------------------------------
contact
--------------------------------------------- 
*/
.contact-us .section-heading {
    padding-top: 50px;
}

.contact-us .section-heading p {
    color: #fff;
    margin-top: 76px;
}

.contact-us .phone-info .bscreen{
    display: block;
}

.contact-us .phone-info .mscreen{
    display: none;
    flex-direction: column;
    align-items:flex-start;
    max-width: 480px;
    margin: 0 auto;
}

.contact-us .phone-info .mscreen div{
    display: flex;
    align-items: center;
}

.contact-us .phone-info .mscreen div img{
    width: 64px;
    height: 64px;
    margin-left: 30px;
    margin-right: 15px;
    flex-shrink: 0;
}

.contact-us .phone-info h4 {
    font-size: 24px;
    font-weight: 400;
    color: #fff;
    display: flex;
    height: 36px;
    line-height: 36px;
    margin-bottom: 12px;
}

.contact-us .phone-info h4 span {
    width: 330px;
}

.contact-us .phone-info h4 span i {
    width: 46px;
    height: 46px;
    display: inline-block;
    text-align: center;
    line-height: 46px;
    /* background-color: #fff; */
    border-radius: 50%;
    color: #ff3b2c;
    font-size: 22px;
    margin-left: 30px;
    margin-right: 15px;
}

.contact-us .phone-info a {
    color: #FFF;
}

.contact-us .right-content {
    align-items: self-start;
    height: auto;
}

.contact-us .right-content img {
    width: 80%;
    object-fit: cover;
}

.contact-us .section-heading h2 {
    color: #fff;
    margin-bottom: 76px;
}

.contact-us .position {
    margin-top: 45px;
    display: flex;
}

.contact-us .position img {
    width: 32px;
    height: 32px;
}

.contact-us .position div {
    flex: 1;
    display: inline-block;
    line-height: 32px;
    font-size: 20px;
    color: white;
    text-align: center;
}

form#contact {
    position: relative;
    background-color: #fff;
    padding: 52px 29px 29px;
    border-radius: 12px;
}

form#contact input {
    width: 100%;
    height: 46px;
    border-radius: 12px;
    background-color: rgba(230, 217, 217, 0.5);
    border: none;
    outline: none;
    font-size: 15px;
    font-weight: 300;
    color: #2a2a2a;
    padding: 0px 20px;
    margin-bottom: 24px;
}

form#contact input::placeholder {
    color: #2a2a2a;
}

form#contact textarea {
    width: 100%;
    min-width: 100%;
    max-width: 100%;
    max-height: 180px;
    min-height: 140px;
    height: 140px;
    border-radius: 20px;
    background-color: rgba(230, 217, 217, 0.5);
    border: none;
    outline: none;
    font-size: 15px;
    font-weight: 300;
    color: #2a2a2a;
    padding: 15px 20px;
    margin-bottom: 24px;
}

form#contact textarea::placeholder {
    color: #2a2a2a;
}

form#contact button {
    display: inline-block;
    background-color: rgba(254, 84, 31, 1);
    font-size: 15px;
    font-weight: 400;
    color: #fff;
    text-transform: capitalize;
    padding: 12px 25px;
    border-radius: 12px;
    letter-spacing: 0.25px;
    border: none;
    outline: none;
    transition: all .3s;
}

form#contact button:hover {
    background-color: #fe3f40;
}

/* 响应 */
@media (max-width: 1400px) {
    .main-banner .left-content h2 {
        font-size: 90px;
    }

    .our-services {
        background:
            linear-gradient(to bottom,
                transparent 0%,
                transparent calc(100% - 218px),
                /* 黑色区域开始的地方 */
                rgba(31, 35, 38, 1) calc(100% - 218px),
                rgba(31, 35, 38, 1) 100%) right,
            /* 黑色部分高度为217px */
            linear-gradient(to bottom,
                rgba(248, 248, 248, 1) 0%,
                rgba(248, 248, 248, 1) calc(100% - 218px)) right;
        background-size: 50% 100%;
        background-repeat: no-repeat;
    }

    .our-services .container .services-bg .gray {
        height: calc(100% - 218px);
    }

    .our-services .container .services-bg .black {
        height: 218px;
    }
}

@media (max-width: 1200px) {
    .main-banner .left-content h3 {
        font-size: 60px;
    }

    .main-banner .left-content h2 {
        font-size: 78px;
        line-height: 130px;
    }

    .main-banner .left-content h1{
        max-width: 490px;
    }

    .our-services {
        background:
            linear-gradient(to bottom,
                transparent 0%,
                transparent calc(100% - 250px),
                /* 黑色区域开始的地方 */
                rgba(31, 35, 38, 1) calc(100% - 250px),
                rgba(31, 35, 38, 1) 100%) right,
            /* 黑色部分高度为250px */
            linear-gradient(to bottom,
                rgba(248, 248, 248, 1) 0%,
                rgba(248, 248, 248, 1) calc(100% - 250px)) right;
        background-size: 50% 100%;
        background-repeat: no-repeat;
    }

    .our-services .container .services-bg .gray {
        height: calc(100% - 250px);
    }

    .our-services .container .services-bg .black {
        height: 250px;
    }
}

@media (max-width: 992px) {

    .main-banner .left-content .introduction,
    .main-banner .left-content form {
        max-width: 600px;
        width: 100%;
        margin: 0 auto;
        text-align: left;
    }

    .main-banner .left-content h3 {
        text-align: left;
    }

    .main-banner .left-content h2 {
        text-align: left;
    }

    .main-banner .banner-bg-mobile{
        width: 470px;
    }

    /* contact-us---------- */
    .contact-us .phone-info .bscreen{
        display: none;
    }

    .contact-us .phone-info .mscreen{
        display: flex;
    }

    .contact-us .phone-info h4 {
        align-items: center;
        justify-content: center;
        font-size: 18px;
        max-width: 480px;
        margin: 0 auto;
    }

    .contact-us .section-heading p {
        margin-top: 30px;
    }

    .contact-us .section-heading h2 {
        text-align: center;
        font-size: 22px;
        margin-bottom: 20px;
    }

    .contact-us .right-content {
        margin-top: 40px;
    }

    .contact-us .position div {
        display: none;
        font-size: 18px;
    }

    .contact-us .position div img {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 768px) {
    .main-banner .banner-bg-mobile{
        width: 495px;
    }

    .contact-us .phone-info .mscreen div img{
        width: 8vw;
        height: 8vw;
        min-width: 48px;
        min-height: 48px;
    }
}

@media (max-width: 597px) {
    .main-banner {
        padding-top: 40vw;
    }
    .main-banner .left-content .introduction {
        max-width: 400px;
    }

    .main-banner .left-content h3 {
        font-size: 40px;
    }

    .main-banner .left-content h2 {
        font-size: 50px;
        line-height: 70px;
    }

    .main-banner .left-content h1 {
        font-size: 16px;
        line-height: 20px;
        margin-top: 24px;
        margin-bottom: 60px;
    }

    .main-banner .banner-bg-mobile {
        width: 100%;
        max-width: 415px;
        top: calc(100% - 520px);
    }
}
@media (max-width: 450px) {
    .main-banner .banner-bg-mobile {
        width: 100%;
        max-width: 400px;
        top: calc(100% - 495px);
    }
}