/* ---------------- Google fonts ------------------ */
@import url("https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Raleway:ital,wght@0,100..900;1,100..900&family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap");

/* ---------------- Basic css ------------------ */
html {
    font-size: 0.6944vw;
}

:root {
    scroll-behavior: unset;
    --white: #ffffff;
    --black: #000000;
    --color_c3: #abb2c3;
    --color_53: #163153;
    --color_bf: #b6b9bf;
    --color_10: #101010;
    --color_8a: #757b8a;
    --color_92: #7e8492;
    --color_25: #1d1e25;

    --blue: #0c99ff;
    --yellow: #facc15;
    --boxShadow: 0 0 2.5rem 0.1rem rgba(0, 0, 0, 0.15);

    --white_img: brightness(0) saturate(100%) invert(99%) sepia(0%)
        saturate(7498%) hue-rotate(67deg) brightness(112%) contrast(100%);
    --black_img: brightness(0) saturate(100%) invert(0%) sepia(0%) saturate(16%);

    --bodyFont: "Inter", sans-serif;
    --titleFont: "Poppins", sans-serif;
    --Roboto: "Roboto", sans-serif;
    --raleway: "Raleway", sans-serif;

    --radius8: 0.8rem;
    --radius18: 1.8rem;
    --radius0: 0rem;
    --radiusfull: 100rem;

    --header_height: 11.4rem;
}

img {
    width: 100%;
}

html,
body,
div,
span,
h1,
h2,
h3,
h4,
h5,
h6,
p,
a,
strong,
i,
ol,
ul,
li,
form,
label,
footer,
header,
menu,
nav,
section {
    margin: 0;
    padding: 0;
}

ol,
ul {
    list-style: none;
}

a {
    text-decoration: none;
    transition: 200ms;
    color: inherit;
}

button:focus,
a:focus,
input:focus,
textarea:focus {
    outline: none;
}

button {
    background: none;
    border: none;
    outline: none;
    padding: 0;
}

/* body */
body {
    font-size: 1.6rem;
    font-weight: 500;
    line-height: 2.4rem;
    color: var(--color_92);
    overflow-x: hidden;
    font-family: var(--bodyFont);
}

.container {
    padding-left: 0;
    padding-right: 0;
}

main {
    position: relative;
    overflow: hidden;
    width: 100%;
}

section {
    padding: 9rem 0;
}

.figure img,
.figure {
    width: 100%;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    font-family: var(--titleFont);
    color: var(--color_53);
}

/* colros */
.text_yellow {
    color: var(--yellow) !important;
}
.bg_yellow {
    background: var(--yellow) !important;
}
.text_blue {
    color: var(--blue) !important;
}
.bg_blue {
    background: var(--blue) !important;
}

/* image colros */
.white_img {
    -webkit-filter: brightness(0) saturate(100%) invert(99%) sepia(0%)
        saturate(7498%) hue-rotate(67deg) brightness(112%) contrast(100%);
    filter: brightness(0) saturate(100%) invert(99%) sepia(0%) saturate(7498%)
        hue-rotate(67deg) brightness(112%) contrast(100%);
}
.black_img {
    -webkit-filter: brightness(0) saturate(100%) invert(0%) sepia(0%)
        saturate(16%) hue-rotate(309deg) brightness(93%) contrast(107%);
    filter: brightness(0) saturate(100%) invert(0%) sepia(0%) saturate(16%)
        hue-rotate(309deg) brightness(93%) contrast(107%);
}

/* Font Weights */
.f_300 {
    font-weight: 300 !important;
}
.f_400 {
    font-weight: 400 !important;
}
.f_500 {
    font-weight: 500 !important;
}
.f_600 {
    font-weight: 600 !important;
}
.f_700 {
    font-weight: 700 !important;
}
.f_800 {
    font-weight: 800 !important;
}
.f_900 {
    font-weight: 900 !important;
}

/* titles */
h1 {
    font-size: 6.4rem;
    line-height: 7.68rem;
    letter-spacing: -0.1rem;
}
h2 {
    font-size: 6rem;
    line-height: 9rem;
    letter-spacing: -0.03em;
}
h3 {
    font-size: 5.6rem;
    line-height: 6.72rem;
    letter-spacing: -0.01em;
}
h4 {
    font-size: 4.8rem;
    line-height: 5.76rem;
}
h5 {
    font-size: 4rem;
    line-height: 4.8rem;
}
h6 {
    font-size: 2.4rem;
    line-height: 3.4rem;
}

/* texts */
.text_2xl {
    font-size: 2.4rem;
    line-height: 2.813rem;
}
.text_xl {
    font-size: 2rem;
    line-height: 3rem;
}
.text_lg {
    font-size: 1.8rem;
    line-height: 3.2rem;
}
.text_md {
    font-size: 1.6rem;
    line-height: 2.6rem;
}
.text_sm {
    font-size: 1.4rem;
    line-height: 2.1rem;
}
.text_xsm {
    font-size: 1.2rem;
    line-height: 1.8rem;
}
.text_2xsm {
    font-size: 1.05rem;
    line-height: 1.21rem;
}

/* ============= hamburger_btn ============= */
.hamburger_btn {
    transform: translateX(0.2rem);
}

.hamburger_btn input {
    display: none;
}
.hamburger_btn .grid {
    display: grid;
    grid-template-rows: 1fr 1fr;
    grid-template-columns: 1fr 1fr;
}
.hamburger_btn .grid > * {
    position: relative;
}
.hamburger_btn label {
    display: block;
    cursor: pointer;
    width: 3.5rem;
    height: 3.5rem;
    position: relative;
}
.hamburger_btn svg {
    width: 11rem;
    height: 11rem;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    top: 50%;
}
.hamburger_btn circle {
    font-size: 5rem;
}
@media (min-aspect-ratio: 1) {
    .hamburger_btn label {
        width: 3.5rem;
        height: 3.5rem;
    }
}
.hamburger_btn .menu--1 label {
    bottom: 0;
}
.hamburger_btn .menu--1 label {
    right: 0;
}
.hamburger_btn path {
    fill: none;
    stroke: var(--white);
    stroke-width: 1;
    stroke-linecap: round;
    stroke-linejoin: round;
    --length: 24;
    --offset: -38;
    stroke-dasharray: var(--length) var(--total-length);
    stroke-dashoffset: var(--offset);
    transition: all 0.8s cubic-bezier(0.645, 0.045, 0.355, 1);
}
.hamburger_btn circle {
    fill: rgba(255, 255, 255, 0);
    opacity: 0;
}
.hamburger_btn label:hover circle {
    opacity: 1;
}
.hamburger_btn .cross input:checked + svg .line--1,
.hamburger_btn .cross input:checked + svg .line--3 {
    --length: 22.627416998;
}
.hamburger_btn .cross input:checked + svg .line--2 {
    --length: 0;
}
.hamburger_btn .back input:checked + svg .line--1,
.hamburger_btn .back input:checked + svg .line--3 {
    --length: 8.602325267;
}
.hamburger_btn .menu--1 .line--1,
.hamburger_btn .menu--1 .line--3 {
    --total-length: 126.6418304443;
}
.hamburger_btn .menu--1 .line--2 {
    --total-length: 70;
}
.hamburger_btn .menu--1 input:checked + svg .line--1,
.hamburger_btn .menu--1 input:checked + svg .line--3 {
    --offset: -94.1149185097;
}
.hamburger_btn .menu--1 input:checked + svg .line--2 {
    --offset: -50;
}

/* -------------- preloader --------------- */
#preloader {
    position: fixed;
    background: var(--white);
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999999999;
    height: 100vh;
    width: 100vw;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader3 {
    width: 5rem;
    height: 5rem;
    display: inline-block;
    padding: 0;
    text-align: left;
}

.loader3 span {
    position: absolute;
    display: inline-block;
    width: 5rem;
    height: 5rem;
    border-radius: 100%;
    background: #000000;
    -webkit-animation: loader3 1.5s linear infinite;
    animation: loader3 1.5s linear infinite;
}

.loader3 span:last-child {
    animation-delay: -0.9s;
    -webkit-animation-delay: -0.9s;
}

@-webkit-keyframes loader3 {
    0% {
        transform: scale(0, 0);
        opacity: 0.8;
    }

    100% {
        transform: scale(1, 1);
        opacity: 0;
    }
}

@keyframes loader3 {
    0% {
        transform: scale(0, 0);
        opacity: 0.8;
    }

    100% {
        transform: scale(1, 1);
        opacity: 0;
    }
}

/* -------------- Back to top ------------ */
.back-to-top {
    width: 5.5rem;
    height: 5.5rem;
    line-height: 4.5rem;
    text-align: center;
    position: fixed;
    bottom: 3rem;
    right: 2rem;
    border-radius: 50%;
    background: var(--color_53);
    z-index: 1000;
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top img {
    -webkit-filter: brightness(0) saturate(100%) invert(100%) sepia(100%)
        saturate(0%) hue-rotate(288deg) brightness(102%) contrast(102%);
    filter: brightness(0) saturate(100%) invert(100%) sepia(100%) saturate(0%)
        hue-rotate(288deg) brightness(102%) contrast(102%);
    width: 2rem;
}

.topbtn_hide {
    opacity: 1;
}

/* rounded */
.rounded_8 {
    border-radius: var(--radius8) !important;
}

/* =========== Buttons ========== */
.button {
    font-size: 1.6rem;
    font-weight: 700;
    height: 5.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50rem;
    padding: 0 5.5rem;
    line-height: 1.5;
    transition: 0.25s ease;
    width: max-content;
    font-family: var(--bodyFont);
    background: var(--blue);
    color: var(--white);
    gap: 3rem;
    white-space: nowrap;
}

.rounded_8 {
    border-radius: 0.8rem !important;
}

.button:hover {
    background: rgb(65, 8, 219);
}

.button_yellow {
    background: var(--yellow);
    color: #1d1e25;
    width: 21.6rem;
    height: 5.4rem;
}
.button_yellow:hover {
    background: #fa8f15;
}

.button_white {
    background: var(--white);
    color: var(--blue);
    height: 5.4rem;
    width: 19.4rem;
}
.button_white:hover {
    background: var(--blue);
    color: var(--white);
}

/* -------------- Header Styles by Sahriar --------------- */
.site_header {
    height: var(--header_height);
    padding: 0;
    display: flex;
    align-items: center;
    position: fixed;
    z-index: 999;
    width: 100%;
    background: transparent;
    top: 0;
    left: 0;
    -webkit-transition: all 0.4s ease;
    -o-transition: all 0.4s ease;
    background: var(--color_20);
    transition: all 0.4s ease;
}

.sticky {
    position: fixed;
    background: #001a47;
}

/* added styles */
.logo img {
    width: 21.582rem;
    transition: 0.25s;
}

.menu_link {
    color: var(--white);
    font-size: 1.6rem;
    line-height: 1.5;
    transition: 0.25s;
}

.menu_link:hover {
    color: var(--blue);
}

.primary_menu {
    gap: 3.2rem;
    margin-right: 4.8rem;
    display: flex;
}

/* ================ Hero area ================ */
.hero_area {
    padding-top: 14.5rem;
    padding-bottom: 19rem;
    background: url(../img/hero_bg.png) no-repeat scroll left top / 100% 100%;
    position: relative;
}

.blue_circle {
    display: block;
    height: 77.6rem;
    width: 73.4rem;
    position: absolute;
    background: var(--blue);
    border-radius: 1000rem;
    right: -19.4rem;
    bottom: -22rem;
}

.logo img {
    width: 21.582rem;
}

.moving_arrow {
    width: 9.5rem;
    position: relative;
    top: -2.2rem;
}

.hero_img {
    width: 43rem;
    height: 43rem;
    border-radius: var(--radiusfull);
}

.star {
    width: 1.4rem;
}

.hero_bottom_right p {
    display: flex;
    align-items: center;
    gap: 0.57rem;
    color: var(--color_c3);
}

.hero_bottom {
    gap: 3.3rem;
}

.hero_images img {
    border: 0.2rem solid #1e3c63;
    border-radius: 10rem;
    width: 5.6rem;
    height: 5.6rem;
    object-fit: cover;
}

.hero_images img:not(:first-child) {
    margin-left: -2.3rem;
}

.hero_area .content a {
    height: 6rem;
    padding: 0 6.7rem;
}

/* ============ Formula area ============= */
.formula_area {
    padding: 13rem 0 4rem 0;
}

.formula_img img {
    width: 100%;
    height: 50rem;
    border-radius: 3rem;
    transition: 0.25s ease;
    object-fit: cover;
}

.formula_img {
    border-radius: 3rem;
    overflow: hidden;
    position: relative;
}

.formula_box {
    cursor: pointer;
}

.formula_img h1 {
    font-size: 9rem;
    line-height: 1;
    color: var(--white);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 7.5rem;
    transition: 0.25s ease;
    opacity: 1;
    pointer-events: all;
}

.formula_bottom h6 {
    text-transform: uppercase;
    transition: 0.25s ease;
}

.formula_bottom p {
    color: var(--color_bf);
}

.yellow_arrow {
    width: 8.2rem;
    height: 8.2rem;
    display: flex;
    align-items: center;
    border-radius: 10rem;
    background: var(--yellow);
    justify-content: center;
}

.yellow_arrow img {
    width: 2.2rem;
    transition: 0.25s ease;
}

.white_border8 {
    border: 0.8rem solid var(--white);
}

.formula_box:hover .formula_bottom h6 {
    color: var(--blue);
}

/* ================ service_area ============== */
.service_area {
    background: url(../img/service_bg.png) no-repeat scroll top left / cover;
}

.service_icon img {
    width: 2rem;
}

.service_icon {
    width: 4rem;
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border-radius: 10rem;
}

.service_box {
    background: var(--blue);
    border-radius: 0.8rem;
}

.service_area .row1 p {
    color: #ededed;
}

/* =============== Research area ================ */
.research_img {
    border-radius: 18.9rem;
}

.research_bottom_left {
    background: var(--white);
    padding: 2rem 1rem 2rem 2rem;
    border-radius: 1.6rem;
    box-shadow: 2rem 4rem 8rem 0rem #2d33511f;
    position: absolute;
    bottom: 8rem;
    right: -6rem;
}

.research_bottom_left .hero_images img {
    border-color: var(--white);
    border-width: 0.2rem;
}

.research_bottom_left h6 {
    color: #101010 !important;
    line-height: 150%;
}

.research_bottom_left .hero_bottom_right p {
    color: #757b8a;
}

.research_bottom_left {
    gap: 2.4rem;
}

.research_content h2,
.research_content h5 {
    color: #101010;
}

.research_content {
    padding-left: 12rem;
    padding-top: 6.4rem;
}

.research_box h5 {
    white-space: nowrap;
    padding-bottom: 0.8rem;
}

/* ============== CTA area ============== */
.cta_area {
    padding: 4rem 0 13.5rem 0;
}

.button_arrow img {
    width: 2.4rem;
}

.cta_area .button {
    width: fit-content !important;
    padding: 0 2rem 0 3.5rem;
    height: 5.4rem;
}

.button_arrow {
    width: 2.4rem;
}

/* ============== cta_area_two ============== */
.cta_area_two {
    padding: 4.8rem 0 11.2rem 0;
}

.cta_area_two .content {
    background: var(--color_53);
    padding: 8rem 2rem 4.8rem 2rem;
    border-radius: 1.6rem;
}

.cta_area_two p {
    color: #ededed;
}

/* ================== footer_section ============= */
.footer_section {
    background: url(../img/footer_bg.png) no-repeat scroll top left / 100% 100%;
    position: relative;
    padding: 8rem 0 3.5rem 0;
    overflow: hidden;
}

.footer_symbol {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 59rem;
    height: 100%;
}

p > a.underline {
    text-decoration: underline;
}

p > a.underline:hover {
    text-decoration: none;
}

.footer_icon {
    background: var(--white);
    width: 4.6rem;
    height: 4.6rem;
    border-radius: 10rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer_icon img {
    width: 2.4rem;
}

.footer_link {
    font-weight: 400;
}

.footer_bottom_link {
    font-weight: 400;
}

.footer_link:hover .footer_icon img {
    transform: scale(1.1);
}

.footer_link:hover .footer_icon {
    background: var(--yellow);
}

.footer_link:hover > p {
    color: var(--yellow) !important;
}

.footer_links * {
    transition: 0.25s;
}

.footer_mid {
    padding-top: 2rem;
    border-top: 0.1rem solid #354663;
}

/* ================ Qna area ============== */
.qna_area {
    padding: 11.2rem 0;
}

.accordion_button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0;
}

.accordion_button.collapsed .minus_icon {
    display: none;
}

.accordion_button.collapsed .plus_icon {
    display: block;
}

.accordion_button:not(.collapsed) .plus_icon {
    display: none;
}

.accordion_btn_arrow img {
    width: 2.2rem;
}

.accordion-body {
    padding: 1.6rem 0 0 0;
}

.accordion_item {
    padding: 2.5rem 0;
    border-bottom: 0.1rem solid #ededed;
}

.accordion_button h6 {
    color: #1d1e25;
}

.accordion-body p {
    color: #7e8492;
}

.qna_area .content h3 {
    color: #1d1e25;
}

.qna_area .content p {
    color: #7e8492;
}

.accordion_btn_arrow {
    width: 4rem;
    height: 4rem;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10rem;
}

/* ============= Step Function ============= */

.level,
.checkout {
    display: none;
}

.step_level_one .level_one,
.step_level_one .checkout_level_one {
    display: block;
}

.step_level_two .level_two,
.step_level_two .checkout_level_two {
    display: block;
}

.step_level_three .level_three,
.step_level_three .checkout_level_three {
    display: block;
}

.step_level_four .level_four,
.step_level_four .checkout_level_four {
    display: block;
}

.step_level_five .level_five,
.step_level_five .checkout_level_five {
    display: block;
}

.selectBind {
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 2rem;
    color: #101010;
    padding: 1.6rem;
    border: 0.1rem solid #d6d6d6;
    border-radius: 0.8rem;
    height: 5.2rem;
    width: 32.7rem;
}

/* =============== formula area ================== */
.formula_popup {
    position: fixed;
    top: 0;
    left: 0;
    background: #001a47;
    z-index: 99999;
    width: 100vw;
    height: 100vh;
    transition: 0.35s ease;
    pointer-events: none;
    opacity: 0;
    transform: scale(0.75);
    overflow: hidden;
    border: 1rem solid #fff;
    border-radius: 2rem;
}

.formula_popup.active {
    transform: scale(0.85);
    pointer-events: all;
    opacity: 1;
}

.formula_popup .container {
    width: 91rem;
    position: relative;
}

.formula_popup .formula_img img {
    height: 34.3rem;
}

.formula_popup .container .row {
    margin-left: -5.3rem;
    margin-right: -5.3rem;
}

.formula_popup .container .row > * {
    padding: 0 5.3rem;
}

.formula_popup .formula_bottom h6 {
    color: var(--white);
}

.formula_popup .container {
    display: flex;
    flex-direction: column;
    align-items: center !important;
    height: 100%;
    justify-content: center;
}

.formula_popup .container .level {
    height: fit-content;
}

.scroller_popup {
    width: 100%;
    height: 100vh;
    overflow-y: auto;
}

.scroller_popup::-webkit-scrollbar {
    display: none;
    scrollbar-width: 0;
}

.form_group input {
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 2rem;
    color: #101010;
    padding: 1.6rem;
    border: 0.1rem solid #d6d6d6;
    border-radius: 0.8rem;
    height: 5.2rem;
    width: 32.7rem;
}

.form_group input,
.form_group input::placeholder {
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 2rem;
    color: #101010;
}

.form_group {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.check img {
    width: 1rem;
}

.check {
    width: 2.4rem;
    height: 2.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border-radius: 0.4rem;
}

.checkbox p {
    color: var(--white);
}

.checkbox {
    cursor: pointer;
}

.checkbox.active img {
    filter: var(--black_img);
}

.popup_overlay {
    background: rgb(0, 0, 0, 0.5);
    position: fixed;
    width: 100vw;
    height: 100vh;
    transform: scale(1) !important;
    border: 0;
    border-radius: 0;
    backdrop-filter: blur(1px) brightness(0.5);
    opacity: 0;
}

.popup_overlay.active {
    opacity: 1;
}

.formula_popup .formula_box:hover h6 {
    color: var(--white);
}