:root {
  --tu-red-color: #a51e37;
  --tu-white-color: #f0f0f0;
  --tu-navy-color: #444e57;
  --tu-grey-color: #5b676f;
  --tu-gold-color: #ffd700;
  --transition: all 0.5s ease-in-out;
}
* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

html {
  color: var(--tu-navy-color);
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}
/* setup & reusable stylings */
img {
  width: 100%;
}
a {
  /* text-decoration: none; */
  color: var(--tu-navy-color);
}

p a {
  text-decoration: none;
  color: var(--tu-red-color);
}



li {
  list-style-type: none;
}
button {
  cursor: pointer;
  outline: 0;
  background: transparent;
}
.container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 1rem;
  /* justify-content: center;
  align-items: center; */
}
.about_container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  justify-content: center; 
  flex-direction: column;
  align-items: center; 
}
h1,
h2,
h3,
/* h4, */
h5,
h6 {
  margin: 0.6rem 0;
  line-height: 1.25;
  font-weight: 400;
  /* text-transform: capitalize; */
}
.text {
  margin: 0.6rem 0;
  opacity: 0.8;
  text-align: justify;
  text-justify: inter-word;
}
.text-list li {
  margin-left: 2em;
  list-style-type: circle;
}
.example {
  font-size: 0.9rem;
  margin: 2rem 3rem 1rem 3rem;
  opacity: 0.7;
  text-align: justify;
  text-justify: inter-word;
}
.example-label {
  font-size: 0.8rem;
  margin: 0 3rem 0 3rem;
  opacity: 0.6;
  text-align: justify;
  text-justify: inter-word;
}
.center {
  display: flex;
  justify-content: center;
  align-items: center;
}
.center_contianer {
  text-align: center;
}
.left_contianer {
  text-align: left;
}
.person {
  margin-top: 30px;
  margin-bottom: 30px;
}
.pcenter {
  display: inline-block;
  text-align: left;
}
section {
  padding: 6.5rem 0;
}
.title {
  padding: 0.6rem 0;
  text-align: center;
}
.title h2 {
  font-size: 2.2rem;
  color: var(--tu-red-color);
}
.title .text {
  font-weight: 500;
  font-size: 1.1rem;
}

/* header */
.header {
  background-color: black;
  min-height: 100vh;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: #fff; /*change this*/
  display: flex;
  flex-direction: column;
  justify-content: stretch;
}
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--tu-red-color);
  z-index: 999;
}
.nav-background {
  background-color: var(--tu-red-color);
}
.brand-and-toggler {
  font-size: 1.65rem;
  padding: 0.8rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.navbar-brand {
  font-weight: 500;
  color: var(--tu-white-color);
}
.navbar-brand span {
  color: var(--tu-gold-color);
}
.navbar-toggler {
  border: none;
  color: var(--tu-white-color);
}
.navbar-nav {
  margin: 0.2rem 0 0.6rem 0;
}
.navbar-nav a {
  text-decoration: none;
}
.nav-item {
  padding: 0.6rem 0;
}
.nav-link {
  text-transform: uppercase;
  font-size: 0.95rem;
  letter-spacing: 1.5px;
  font-weight: 400;
  opacity: 0.7;
  color: var(--tu-white-color);
  transition: var(--transition);
}
.nav-link:hover {
  color: var(--tu-gold-color) !important;
}
.navbar-collapse {
  display: none;
}
.hero-div {
  flex: 1;
  flex-direction: column;
  text-align: center;
}
.hero-div h1 {
  font-size: 2.55rem;
  padding-bottom: 0.4rem;
}
.hero-div p {
  color: var(--tu-white-color);
  font-size: 1.05rem;
  letter-spacing: 3px;
  transition: var(--transition);
}

/* detail */
.detail {
  background: var(--tu-white-color);
}
.detail-item {
  background: #fff;
  text-align: center;
  box-shadow: 0 1px 2px 0 rgba(90, 91, 95, 0.1);
  -webkit-box-shadow: 0 1px 2px 0 rgba(90, 91, 95, 0.1);
  -moz-box-shadow: 0 1px 2px 0 rgba(90, 91, 95, 0.1);
  margin: 2rem 0;
  padding: 3.5rem 1.5rem;
  border-radius: 4px;
  transition: var(--transition);
}
.detail-item:hover {
  -webkit-box-shadow: 0 21px 19px -2px rgba(217, 217, 217, 1);
  -moz-box-shadow: 0 21px 19px -2px rgba(217, 217, 217, 1);
  box-shadow: 0 21px 19px -2px rgba(217, 217, 217, 1);
  transform: translateY(-5px);
}
.detail-item a {
  color: var(--tu-red-color);
  text-decoration: none;
}
.detail-item a:hover {
  color: var(--tu-gold-color);
  text-decoration: none;
  transition: var(--transition);
}
.detail-item span {
  font-size: 2.5rem;
  margin: 0.5rem;
}
.detail-item h2 {
  font-size: 1.4rem;
  opacity: 0.8;
  font-weight: 300;
}
.detail-item h4 {
  text-align: left;
  opacity: 0.8;
  font-weight: 600;
  margin-top: 1.5rem;
}
.line {
  width: 45px;
  margin: 1.2rem auto;
  background: var(--tu-red-color);
  height: 2.5px;
}

.line2 {
  width: 45px;
  /* margin: 1.2rem auto; */
  /* background: var(--tu-grey-color); */
  opacity: 0.3;
  height: 1px;

}

/* language */
.language {
  background: #f9f9f9;
}
.language .row {
  margin-top: 2rem;
}
.language-item {
  margin: 0.6rem 0;
}
.language-head {
  background: var(--tu-white-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  padding: 0.2rem 1.8rem;
}
.language-head h3 {
  font-weight: 300;
  opacity: 0.8;
}
.language-content {
  background: #fff;
  overflow: hidden;
  height: 0;
  padding: 0 1.8rem;
  transition: var(--transition);
}
.language-content h4 {
  text-align: left;
  opacity: 0.8;
  font-weight: 600;
  margin-top: 1.5rem;
}
.show-language-content {
  height: 100%;
  padding: 0.6rem 1.8rem;
}

/* video */
/* video */
.video {
  background-color: black;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  color: #fff;
  text-align: center;
}
.video a {
  font-size: 2.2rem;
  color: #fff;
  width: 65px;
  height: 65px;
  border-radius: 50%;
  background-color: var(--tu-red-color);
  padding-left: 7px;
  margin: 0 auto;
}
.video h2 {
  font-size: 2rem;
  color: var(--tu-white-color);
  padding: 1.2rem 0;
}
.video p {
  font-size: 1.1rem;
  color: white;
  opacity: 0.7;
  width: 70%;
  margin: 0 auto;
  text-align: left;
}
.video h4 {
  font-size: 1.1rem;
  color: white;
  opacity: 0.7;
  width: 70%;
  margin: 0 auto;
  text-align: left;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

/* footer */
.footer {
  text-align: center;
  background: var(--tu-navy-color);
  color: var(--tu-white-color);
  padding: 2rem 0;
  height: 20vh;
}
.footer .text {
  opacity: 0.8;
}
.footer-links {
  display: flex;
  justify-content: center;
  margin-top: 1.6rem;
}
.footer-links a {
  color: var(--tu-white-color);
  opacity: 0.8;
  width: 50px;
  height: 50px;
  margin: 0 0.2rem;
  border-radius: 50%;
  transition: var(--transition);
}
.footer-links a:hover {
  background: var(--tu-red-color);
}
.lead_section {
  text-align: center;
  margin-top: 2em;
}
.lead_section p {
  color: var(--tu-gold-color);
}
.lead_section ul {
  text-align: center;
}
.lead_section li {
  display: inline-block;
}
.lead_section a {
  padding: 15px;
  text-decoration: none;
}
.lead_section a {
  color: var(--tu-white-color);
}
.lead_section a.link:hover {
  color: var(--tu-gold-color);
}
.lead_section a.home:hover {
  color: var(--tu-gold-color);
}
.lead_section a.youtube:hover {
  color: red;
}
.lead_section a.twitter:hover {
  color: #1da1f2;
}

.ctest_info {
  text-align: justify;
  margin-top: 2em;
}

.ctest_info a {
  color: var(--tu-red-color);
}
.ctest_info a:hover {
  color: var(--tu-gold-color);
  text-decoration: none;
  transition: var(--transition);
}

.iframe-container {
  position: relative;
  width: 70%;
  padding-bottom: 40%;
  height: 0;
  margin: auto; /* make em equal */
}
.iframe-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.hero-div p span.gold_point{
  color: var(--tu-gold-color);
}

.about_subTitle{
  display: flex;
  justify-content: center;
  align-items: center;
}
@media screen and (min-width: 992px) {
  .navbar {
    _background: transparent;
    margin-top: 1.4rem;
  }
  .navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .navbar-brand {
    color: var(--tu-white-color);
    font-size: 2rem;
  }
  .navbar-toggler {
    display: none;
  }
  .navbar-collapse {
    display: block !important;
  }
  .navbar-nav {
    display: flex;
    margin: 0;
  }
  .nav-item {
    margin-left: 1.8rem;
  }
  .nav-link {
    color: var(--tu-white-color);
  }
  .switcher {
    color: black;
    font-weight: 700;
  }

  .hero-div h1 {
    font-size: 3.8rem;
  }
  .btn-trans {
    display: inline-block;
    margin-right: 0.8rem;
  }
  .language .row {
    width: 80%;
    margin-left: auto;
    margin-right: auto;
  }

  /* navbar change */
  .cng-navbar {
    -webkit-box-shadow: 0 2px 5px 0 rgba(207, 205, 207, 0.3);
    -moz-box-shadow: 0 2px 5px 0 rgba(207, 205, 207, 0.3);
    box-shadow: 0 2px 5px 0 rgba(207, 205, 207, 0.3);
    margin-top: 0;
    background: #fff;
  }
  .cng-navbar .navbar-brand {
    color: var(--tu-red-color);
  }
  .cng-navbar .nav-link {
    color: var(--tu-red-color);
  }
  .feature .row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
    column-gap: 2rem;
  }
  .feature-right {
    margin-top: 0;
  }
  .video p {
    width: 60%;
  }
}

@media screen and (min-width: 1200px) {
  .hero-div h1 {
    width: 70%;
    margin-left: auto;
    margin-right: auto;
  }
  .detail .row {
    grid-template-columns: repeat(3, 1fr);
  }
  .pricing .row {
    grid-template-columns: repeat(3, 1fr);
  }
  .testimonial-item p {
    width: 60%;
  }
  .contact .row {
    column-gap: 4rem;
  }
  .contact-right {
    padding-left: 4rem !important;
  }
}