* {
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
}
body {
  width: 100%;
  height: 100vh;
  margin: 0;
  padding: 0;
  background: url(images/bg.webp) no-repeat center;
  background-size: 100% 100%;
  background-color: #08112c;
}

a {
  text-decoration: none;
  color: #3b8bba;
}
a:hover,
a:visited {
  color: #265778;
}
.section-top {
  display: flex;
  justify-content: center;
  align-items: center;
}
.taiapp {
  max-width: 1000px;
  margin: 0 auto;
}
.taiapp .logo-app {
  display: flex;
  justify-content: center;
  align-items: center;
}
.container {
  max-width: 1400px;
  margin: 0 auto;
}
.section-bot {
  background: url(images/bgfotter.png) no-repeat center;
  background-size: 100% 100%;
  height: 20%;
}
.section-bot .footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: white;
}
.section-bot .footer .footer-left {
  width: 30%;
}
.section-bot .footer .footer-left .social {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.section-bot .footer .footer-center {
  width: 30%;
}
.section-bot .footer .footer-right {
  width: 30%;
}
.taiapp .down-qr {
  width: 100%;
  padding: 2rem 0;
  display: flex;
  gap: 1rem;
}
.taiapp .down-qr .link-qr {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}
.taiapp .down-qr .link-qr {
  font-size: 30px;
  color: white;
}
.taiapp .ios .qr {
  display: flex;
  justify-content: center;
  align-items: center;
}
.taiapp .ios .qr img {
  width: 18%;
  border-radius: 20px;
  border: 4px solid #fede29;
}
.taiapp .title-app {
  display: flex;
  justify-content: center;
  align-items: center;
}
.taiapp .title-app img {
  width: 70%;
}
.section-bot .footer-bot-page {
  font-size: 14px;
  color: white;
  text-align: center;
}
.window {
  width: 100%;
}

.window .tabs {
  display: flex;
  width: 100%;
  justify-content: space-between;
}
.window .tabs img {
  width: 30%;
}

.tablink {
  float: left;
  border: none;
  outline: none;
  cursor: pointer;
  font-size: 17px;
}
.window .tabcontent .tab-downlink {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}
.window .tabcontent .tab-downlink span {
  color: white;
  font-size: 30px;
}
.window .tabcontent .titletab3 {
  font-size: 50px;
  text-align: center;
  font-style: normal;
  margin: 0;
  font-weight: 700;
  line-height: normal;
  background: linear-gradient(
    180deg,
    #fdf348 17.96%,
    #ffc21b 49.09%,
    #ff131e 80.84%
  );
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.window .tabcontent .tab-downlink .qr {
  width: 15%;
  border-radius: 16.909px;
  border: 3.758px solid #fede29;
  box-sizing: border-box;
}

.window .tabcontent .tab-downlink .qr.ios {
  width: 15%;
  border-color: transparent;
  border-radius: 16.909px;
  border: 3.758px solid #fede29;
}

/* QUAN TRỌNG: style QR bên trong */
.window .tabcontent .tab-downlink .qr canvas,
.window .tabcontent .tab-downlink .qr img {
  width: 100% !important;
  height: auto !important;
  border-radius: 12px;
  display: block;
}

.themmanhinh {
  width: 100%;
  gap: 1rem;
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.themmanhinh-ct {
  width: 80%;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.themmanhinh-ct .imghuongdan img {
  border-radius: 20px;
  border: 3px solid #fff;
}
.themmanhinh-ct img {
  width: 100%;
}
.themmanhinh-ct .huongdan {
  width: 100%;
  background-size: 100% 100%;
}
.themmanhinh-ct .huongdan p {
  text-align: center;
  background: linear-gradient(180deg, #fff 0%, #cef0ff 50.5%, #fff 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 25px;
  font-style: normal;
  font-weight: 900;
  line-height: normal;
  background: linear-gradient(180deg, #fff 0%, #cef0ff 50.5%, #fff 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tabcontent {
  display: none;
  padding: 20px;
  border-top: none;
}

.tabcontent.active {
  display: block;
}

.title-mini {
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  /* font-family: 'Times New Roman'; */
  padding: 10px 0;
  animation: changeColor 0.2s infinite alternate;
}

@keyframes changeColor {
  0% {
    color: #f90;
  }
  50% {
    color: #ffd700;
  }
  100% {
    color: #ffec8b;
  }
}

@media (max-width: 768px) {
  body {
    background: url(images/bgmobile.webp) no-repeat center;
    background-size: cover;
  }
  .taiapp .title-app img {
    width: 100%;
  }
  .taiapp .title-app {
    margin-top: 0.5rem;
  }
  .section-bot .footer {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
  }
  .section-bot .footer .footer-left {
    width: 100%;
  }
  .section-bot .footer .footer-center {
    width: 100%;
  }
  .section-bot .footer .footer-right {
    width: 100%;
  }
  .section-bot {
    height: auto;
    padding: 1rem;
  }
  .taiapp .ios .qr img {
    width: 80%;
  }
  .section-bot .footer-bot-page {
    padding: 1rem 0;
  }
  .themmanhinh {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
  .themmanhinh-ct {
    width: 100%;
  }
  .window .tabs {
    flex-direction: column;
  }
  .window .tabs img {
    width: 100%;
  }

  .title-mini {
    font-size: 18px;
    padding: 0;
  }

  .window .tabcontent .tab-downlink .qr,
  .window .tabcontent .tab-downlink .qr.ios {
    width: 40%;
  }
}