    /* custom_settings */
    
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: Nunito, sans-serif;
    }
    
     :root {
        --white: #FFFFFF;
        --greyLight-2: #c8d0e7;
        --greyLight-1: #E4EBF5;
        --theme_color: #597186;
        --theme_text_color: #2076AF;
        --linear-color-1: linear-gradient(135deg, #0C497F 0%, #2E96D3 100%);
        --bs-primary-rgb: 42, 141, 200;
        --gray: #e7e7e7;
        --footer_bg: #f0f8ff;
        --after-height: 0;
        --work_svgwidth: 70px;
        --about_size: 70px;
    }
    
    li {
        list-style: none;
    }
    
    a {
        text-decoration: none;
        color: black;
    }
    
    section>p::first-letter {
        text-transform: uppercase;
    }
    
    header p::first-letter {
        text-transform: uppercase;
    }
    
    .text_head {
        color: var(--theme_color);
    }
    
    input::placeholder,
    textarea::placeholder {
        color: #cacaca;
        opacity: 1;
        /* Firefox */
    }
    
    .paragraph_text {
        color: var(--theme_color);
        font-size: 15px;
    }
    
    .fs-10 {
        font-size: 10px;
    }
    
    .fs-12 {
        font-size: 12px;
    }
    
    .fs-14 {
        font-size: 14px;
    }
    
    .section_heading {
        position: relative;
    }
    
    .section_heading::after {
        content: '';
        position: absolute;
        width: 100%;
        height: 1px;
        background-color: var(--theme_text_color);
        left: 0;
        bottom: 0;
        border-radius: 50%;
    }
    
    .cursor_pointer {
        cursor: pointer;
    }
    
    .click_rotate_true i {
        transform: rotateX(180deg);
    }
    /* scroll-bar */
    /* scroler  */
    
     ::-webkit-scrollbar {
        width: 12px;
    }
    
     ::-webkit-scrollbar-thumb {
        background-image: var(--linear-color-1);
        border: 1px solid white;
        border-radius: 10px;
    }
    
     ::-webkit-scrollbar-track {
        background-color: rgba(var(--bs-primary-rgb), .2);
    }
    /* bootstrap classes */
    
    .text-primary {
        color: var(--theme_text_color) !important;
    }
    
    .shadow-lg {
        box-shadow: 0.3rem 0.3rem 0.6rem var(--greyLight-2), -0.2rem -0.2rem 0.5rem var(--white) !important;
    }
    
    .btn_primary {
        background: linear-gradient(114deg, rgba(9, 9, 121, 1) 35%, rgba(1, 131, 157, 1) 100%);
        color: white;
        border: 0px;
        padding: 7px 12px;
        border-radius: 10px;
        transition: all 0.5s;
    }
    /* .btn_primary:hover{
    transform: translateY(-6px);
    box-shadow: 0.3rem 0.3rem 0.6rem var(--greyLight-2), -0.2rem -0.2rem 0.5rem var(--white) !important;
} */
    
    .five_line {
        display: -webkit-box;
        max-width: 400px;
        -webkit-line-clamp: 5;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    @keyframes jump {
        0% {
            transform: translateY(-5px);
        }
        50% {
            transform: translateY(5px);
        }
        100% {
            transform: translateY(-5px);
        }
    }
    /* -----header----- */
    
    .back_img {
        width: 8vw;
        position: absolute;
        top: 0;
        right: 0;
        left: 0;
        bottom: 0;
        margin: auto;
    }
    
    header {
        z-index: 110;
    }
    
    .dropdown-item {
        transition: all 0.5s;
    }
    
    .dropdown-item:hover {
        background-color: var(--theme_text_color) !important;
        color: white !important;
    }
    
    .header_logo {
        width: 150px;
        height: 50px;
    }
    /* first_section */
    
    .banner_section {
        height: 80vh;
    }
    
    #sphere canvas {
        height: 100% !important;
        position: relative;
        filter: brightness(0.7);
    }
    
    #sphere {
        position: relative;
    }
    
    .text_shadow {
        text-shadow: 0 0 2px #000000;
    }
    /* about_section */
    
    .about_box {
        transition: all 0.5s;
    }
    
    .about_box:hover {
        border-color: var(--theme_text_color) !important;
    }
    
    .first_ab_img {
        width: 300px;
        height: 250px;
        border-radius: 10px;
    }
    
    .second_ab_img {
        width: 251px;
        height: 200px;
        border-radius: 10px;
        top: -100%;
        transform: translate(-31%, 34%);
    }
    
    .third_ab_img {
        width: 265px;
        height: 200px;
        border-radius: 10px;
        bottom: -100%;
        transform: translate(-27%, -21%);
    }
    /* ----faq_section---- */
    
    .faq_box {
        width: 60px;
        height: 60px;
        border-radius: 50%;
        border: 8px solid #a8dcff;
    }
    
    .faq_box::after {
        position: absolute;
        content: "";
        background-color: var(--theme_text_color);
        width: 2px;
        height: var(--after-height);
        top: 0;
        left: 50%;
        z-index: -1;
    }
    
    .faq_box_main:last-child::after {
        display: none;
    }
    
    .faq_in_image {
        width: 80%;
        height: fit-content;
        animation: jump;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-iteration-count: infinite;
    }
    /* -----work_box---- */
    
    .work_box {
        width: 100px;
        height: 100px;
        /* background-color: #0C497F; */
    }
    
    .work_box img {
        width: 80px;
        height: 80px;
    }
    
    .how_work_box {
        width: 100px;
        height: 100px;
    }
    
    .how_work_box_main {
        border-right-style: solid;
        border-right-color: grey;
        border-right-width: 0.5px;
    }
    
    .work_box_main {
        transition: all 0.5s;
    }
    
    .work_box_main:hover {
        box-shadow: 0.3rem 0.3rem 0.6rem var(--greyLight-2), -0.2rem -0.2rem 0.5rem var(--white);
        transform: translateY(-10px);
    }
    
    .work_box svg {
        transition: all 0.5s;
    }
    
    .work_box_main:hover.work_box_main .work_box svg {
        transform: rotateY(180deg);
    }
    /* why_choose_section */
    /* .wc_main_content {
    margin-left: -188px;
} */
    
    .choose_circle {
        width: 450px;
        height: 450px;
        border-radius: 50%;
        /* background-color: var(--gray); */
        background: linear-gradient(90deg, #efd5ff 0%, #515ada 100%);
    }
    
    .circle_logo {
        width: 200px;
        height: 70px;
        filter: drop-shadow(1px 1px 1px white);
    }
    
    .choose_text_circle {
        width: 250px;
        height: 250px;
        border-radius: 50%;
        /* background: linear-gradient(140deg, rgba(9,9,121,1) 35%, rgba(1,131,157,1) 100%); */
        background: linear-gradient(90deg, #3F2B96 0%, #A8C0FF 100%);
        transform: translate(-70%, -50%);
    }
    
    .choose_point_circle {
        width: 90px;
        height: 90px;
        border-radius: 50%;
    }
    
    .choose_circle_in .choose_point_circle_main:nth-child(1) {
        top: -5%;
        left: 64%;
        width: 140%;
    }
    
    .choose_circle_in .choose_point_circle_main:nth-child(2) {
        top: 21%;
        left: 81%;
        width: 118%;
    }
    
    .choose_circle_in .choose_point_circle_main:nth-child(3) {
        top: 51%;
        left: 85%;
        width: 131%;
    }
    
    .choose_circle_in .choose_point_circle_main:nth-child(4) {
        top: 76%;
        left: 66%;
        width: 130%;
    }
    
    .choose_circle_in .choose_point_circle_main:nth-child(1) .choose_point_circle {
        background: linear-gradient(90deg, #b64fff 0%, #224dbc 100%);
    }
    
    .choose_circle_in .choose_point_circle_main:nth-child(2) .choose_point_circle {
        background: linear-gradient(90deg, #7F92FB 0%, #324a9f 100%);
    }
    
    .choose_circle_in .choose_point_circle_main:nth-child(3) .choose_point_circle {
        background: linear-gradient(90deg, #0BB3C3 0%, #324a9f 100%);
    }
    
    .choose_circle_in .choose_point_circle_main:nth-child(4) .choose_point_circle {
        background: linear-gradient(90deg, #00d2ff 0%, #3a47d5 100%);
    }
    
    .choose_circle_line {
        background-color: #989898;
        width: 100px;
        height: 1px;
    }
    /* =====review-section====== */
    
    .review_card {
        width: 266px;
        height: 316px;
        overflow: hidden;
        border-radius: 10px;
        margin: 0 auto;
    }
    
    .card_video {
        border-radius: 10px 10px 0px 0px;
    }
    
    .fa-star {
        color: #FFC107;
    }
    /* =======google-review===== */
    
    .google_img {
        width: 100%;
        height: fit-content;
    }
    /* =======footer==== */
    
    footer {
        background-color: var(--footer_bg);
    }
    
    .foot-icon {
        width: 35px;
        height: 35px;
        border: 1px solid black;
        transition: all 0.5s;
        cursor: pointer;
    }
    
    .foot-icon i {
        color: black;
    }
    
    .foot-icon:hover {
        background-color: rgba(117, 117, 117, 0.536);
    }
    
    .foot-icon:hover .icon2 {
        color: var(--text-color);
    }
    
    .foot-icon:hover a .icon1 {
        background: var(--grediunt-color);
        background-clip: text;
        -webkit-background-clip: text;
        color: transparent;
        -o-background-clip: text;
        transition: all 0.5s;
    }
    
    .foots-link:hover.foots-link a {
        color: var(--loader-border) !important;
        transition: all 0.5s;
        letter-spacing: 4px;
    }
    
    input:focus {
        outline: none;
        border-color: var(--theme_text_color) !important;
    }
    
    select:focus-visible {
        outline: none;
        border-color: var(--theme_text_color) !important;
    }
    
    select:focus {
        outline: none;
        border-color: var(--theme_text_color) !important;
    }
    
    textarea:focus {
        outline: none;
        border-color: var(--theme_text_color) !important;
    }
    
    input::-webkit-outer-spin-button,
    input::-webkit-inner-spin-button {
        -webkit-appearance: none;
        margin: 0;
    }
    
    .contact_icon {
        background-color: var(--hover_bgcolor);
        color: white;
        transition: all 0.5s;
    }
    
    .contact_icon:hover {
        background: transparent;
        color: var(--hover_bgcolor);
        border-color: var(--hover_bgcolor);
    }
    
    .insta_color {
        transition: all 0.5s;
        background: var(--hover_bgcolor);
        color: white;
    }
    
    .insta_color:hover {
        background: var(--hover_bgcolor);
        background-clip: text;
        -webkit-background-clip: text;
        color: transparent;
        -o-background-clip: text;
    }
    /* ======contect-form======== */
    
    .career_input {
        display: none;
    }
    /* ==============mobile section========= */
    
    .choose_point_circle_mobile {
        width: 100% !important;
    }
    /* ===========================responsive-globle==================== */
    
    @media(min-width:576px) {
        /* h1{
        font-size: 20px !important;
    } */
        /* p{
        font-size: 16px !important;
    } */
        .header_logo {
            width: 150px;
            height: 50px;
        }
    }
    
    @media(min-width:768px) {
        /* ======career page=========== */
        .job_section .btn_primary {
            font-size: 12px !important;
        }
    }
    
    @media(min-width:992px) {
        /* ======career page=========== */
        .job_section .btn_primary {
            font-size: 10px !important;
        }
    }
    
    @media(min-width:1200px) {
        /* ======career page=========== */
        .job_section .btn_primary {
            font-size: 16px !important;
        }
    }
    /* ===========================responsive-custom==================== */
    
    @media(max-width:575px) {
        /* =======root==== */
         :root {
            --near_facility_box_width: 132px !important;
            --bs-body-font-size: 0.66rem;
            --about_size: 40px !important;
        }
        /* ======header===== */
        .header_logo {
            width: 139px;
        }
        .offcanvas a,
        .button_submenu {
            font-size: 16px !important;
        }
        /* ======first_section===== */
        .banner_section {
            height: 60vh;
        }
        .content .title,
        .content .topic {
            font-size: 50px !important;
            text-align: center !important;
        }
        .carousel .list .item .content {
            width: 100vw !important;
            max-width: 100vw;
        }
        .thumbnail .item {
            width: 65px !important;
            height: 63px !important;
        }
        .thumbnail {
            left: 50% !important;
            transform: translateX(-50%);
        }
        /* second_section */
        .about_part2,
        .faq_image,
        .mission_img {
            order: -1;
        }
        .first_ab_img {
            width: 150px;
            height: 116px;
        }
        .second_ab_img {
            width: 150px;
            height: 112px;
        }
        .third_ab_img {
            width: 150px;
            height: 108px;
        }
        .about_part2 {
            height: 294px !important;
            transform: translateX(-10%);
        }
        .faq_box::after {
            left: 50%;
        }
        /* =======about_us page======== */
        .contact_banner p {
            font-size: 14px;
        }
        /* ======career page=========== */
        .job_section .btn_primary {
            font-size: 9px !important;
        }
        /* =======contact_us page======= */
        .location_section iframe {
            height: 225px;
        }
        /*======== project_page=========*/
        .carousel {
            height: 60vh !important;
        }
        /* .carousel .list .item .topic {
        font-size: 3em !important;
    } */
        .about_propart2 {
            order: -1;
        }
        .facility_box {
            width: 43% !important;
            height: 214px !important;
        }
        .near_facility_box img {
            width: 100% !important;
        }
        .d-grid_3 {
            /* display: grid; */
            grid-template-columns: 100% !important;
            grid-template-rows: auto !important;
            grid-gap: 19px !important;
        }
        .d-grid_4 {
            grid-template-columns: 100% !important;
            grid-template-rows: auto !important;
            grid-gap: 19px !important;
        }
        .about_size h5 {
            font-size: 12px !important;
        }
        .about_size p {
            font-size: 11px !important;
        }
        .about_propart2 {
            order: -1;
        }
    }
    
    @media(min-width:576px) and (max-width: 767px) {
         :root {
            --near_facility_box_width: 200px !important;
            --bs-body-font-size: 0.8rem !important;
        }
        /* second_section */
        .about_part2,
        .faq_image,
        .mission_img {
            order: -1;
        }
        .first_ab_img {
            width: 200px;
            height: 150px;
        }
        .second_ab_img {
            width: 200px;
            height: 150px;
        }
        .third_ab_img {
            width: 200px;
            height: 150px !important;
        }
        .about_part2 {
            height: 376px !important;
            transform: translateX(-10%);
        }
        /* ======career page=========== */
        .job_section .btn_primary {
            font-size: 12px !important;
        }
        /* =======contact_us page======= */
        .location_section iframe {
            height: 300px;
        }
        /*======== project_page=========*/
        .carousel .list .item .title,
        .carousel .list .item .topic {
            font-size: 60px !important;
            text-align: center;
        }
        .thumbnail {
            left: 50% !important;
            transform: translateX(-50%);
        }
        .about_propart2 {
            order: -1;
        }
        .facility_box {
            width: 196px !important;
            height: 246px !important;
        }
        .d-grid_3 {
            grid-template-columns: repeat(2, 1fr) !important;
            grid-template-rows: auto !important;
            grid-gap: 19px !important;
        }
        .d-grid_3>div:nth-child(3) {
            grid-column: 1 / span 2;
            /* Span the third item across both columns */
        }
        .d-grid_4 {
            grid-template-columns: repeat(2, 1fr) !important;
            grid-template-rows: repeat(2, 1fr) !important;
            /* grid-template-columns: 50% !important; */
            grid-template-rows: auto !important;
            grid-gap: 19px !important;
        }
        .about_propart2 {
            order: -1;
        }
    }
    
    @media(min-width:768px) and (max-width: 991px) {
         :root {
            --bs-body-font-size: 0.8rem !important;
        }
        .about_part2,
        .faq_image {
            order: -1;
        }
        .first_ab_img {
            width: 200px;
            height: 150px;
        }
        .second_ab_img {
            width: 200px;
            height: 150px;
        }
        .third_ab_img {
            width: 200px;
            height: 150px !important;
        }
        .about_part2 {
            height: 376px !important;
            transform: translateX(-10%);
        }
        /* =======contact_us page======= */
        .location_section iframe {
            height: 400px;
        }
        /* =======project======= */
        .carousel {
            height: 378px !important;
        }
        .carousel .list .item .content {
            padding-right: 0 !important;
            left: 50% !important;
            max-width: 100vw !important;
        }
        .carousel .list .item .title,
        .carousel .list .item .topic {
            font-size: 60px !important;
            text-align: center;
        }
        .thumbnail {
            left: 50% !important;
            transform: translateX(-50%);
        }
        .carousel .list .item .title,
        .carousel .list .item .topic {
            font-size: 60px !important;
        }
        .facility_box {
            width: 150px !important;
            height: 262px !important;
        }
        .d-grid_3 {
            grid-template-columns: repeat(2, 1fr) !important;
            grid-template-rows: auto !important;
            grid-gap: 19px !important;
        }
        .d-grid_3>div:nth-child(3) {
            grid-column: 1 / span 2;
            /* Span the third item across both columns */
        }
        .d-grid_4 {
            grid-template-columns: repeat(2, 1fr) !important;
            grid-template-rows: repeat(2, 1fr) !important;
            /* grid-template-columns: 50% !important; */
            grid-template-rows: auto !important;
            grid-gap: 19px !important;
        }
    }
    
    @media(min-width:992px) and (max-width: 1199px) {
        .carousel {
            height: 500px !important;
        }
         :root {
            --bs-body-font-size: 0.8rem !important;
        }
        /* ====== haeder ====== */
        .main_menu {
            width: 127px !important;
        }
        .custom-dropdown-submenu>.custom-dropdown-menu {
            width: 174px !important;
        }
        .faq_image {
            order: -1;
        }
        .why_choose_sec {
            transform: scale(0.9);
        }
        .choose_circle {
            margin-left: -33%;
        }
        /* =======project======= */
        .carousel .list .item .title,
        .carousel .list .item .topic {
            font-size: 100px !important;
        }
        /* .thumbnail .item {
        width: 98px !important;
        height: 119px !important;
    } */
        .facility_box {
            width: 206px !important;
            height: 248px !important;
        }
        .d-grid_3 {
            grid-template-columns: repeat(2, 1fr) !important;
            grid-template-rows: auto !important;
            grid-gap: 19px !important;
        }
        .d-grid_3>div:nth-child(3) {
            grid-column: 1 / span 2;
            /* Span the third item across both columns */
        }
        .d-grid_4 {
            grid-template-columns: repeat(2, 1fr) !important;
            grid-template-rows: repeat(2, 1fr) !important;
            /* grid-template-columns: 50% !important; */
            grid-template-rows: auto !important;
            grid-gap: 19px !important;
        }
    }
    
    @media(min-width:1200px) and (max-width: 1399px) {
         :root {
            --bs-body-font-size: 0.8rem !important;
        }
        .choose_circle {
            margin-left: -12%;
        }
        /* =======project======= */
        .carousel .list .item .title,
        .carousel .list .item .topic {
            font-size: 100px !important;
        }
        .carousel .list .item .content {
            max-width: 72% !important;
        }
        .thumbnail .item {
            width: 121px !important;
            height: 148px !important;
        }
    }
    
    @media(min-width:1400px) {
        .choose_circle {
            margin-left: -15%;
        }
    }
    /* =======bot======= */
    
    .robot_btn {
        bottom: 49px !important;
    }
    /* =======submenu======= */
    
    .custom-dropdown-toggle:hover .main_menu {
        visibility: visible !important;
        opacity: 1 !important;
    }
    
    .custom-dropdown-toggle:hover {
        color: var(--theme_text_color);
    }
    
    .custom-dropdown {
        position: relative;
    }
    
    .custom-dropdown-toggle {
        padding: 10px 20px;
        border: none;
        cursor: pointer;
        border-radius: 5px;
    }
    
    .custom-dropdown-toggle:hover {
        background-color: #138496;
    }
    
    .custom-dropdown-menu {
        visibility: hidden;
        opacity: 0;
        position: absolute;
        z-index: 1000;
        background-color: #fff;
        border: 1px solid #ddd;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
        list-style: none;
        padding: 0;
        margin: 0;
        transition: all 0.5s;
    }
    
    .custom-dropdown-item {
        padding: 8px 15px;
        color: #333;
        text-decoration: none;
        display: block;
    }
    
    .custom-dropdown-item:hover {
        background-color: var(--theme_text_color);
        color: white !important;
        border-radius: 5px !important;
    }
    
    .custom-dropdown-submenu {
        position: relative;
    }
    
    .custom-dropdown-submenu>.custom-dropdown-menu {
        top: 10px;
        left: calc(100% + 5px);
        margin-top: -6px;
        width: 235px;
        text-align: center;
        border-radius: 5px;
        transition: all 0.5s;
    }
    
    .custom-dropdown-submenu:hover>.custom-dropdown-menu {
        visibility: visible !important;
        opacity: 1 !important;
        transform: translateY(-10px);
    }
    
    .custom-dropdown.custom-open>.custom-dropdown-menu {
        visibility: visible !important;
        opacity: 1 !important;
        padding: 5px;
    }
    
    .custom-caret {
        margin-left: 5px;
    }
    
    .main_menu {
        width: 200px;
        text-align: center;
        border-radius: 5px;
        transform: translateX(-19%);
        padding: 5px;
        bottom: -90px;
    }