body {
  line-height: 1;
  margin: auto;
  padding: auto;
}
html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}
a:link {
  text-decoration: none;
}
.intro {
  position: absolute;
  left: 0;
  top: 20%;
  padding: 0 20px;
  width: 100%;
  text-align: center;
}
.subtitle {
  color: #333333;
  font-size: 18px;
  font-weight: 400;
  max-width: 600px;
  margin: 0 auto 25px;
  line-height: 1.5;
}
.admin-link {
  position: fixed;
  top: 20px;
  right: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(0, 0, 0, 0.75);
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 600;
  border-radius: 20px;
  text-decoration: none;
  transition: background 0.3s ease;
  z-index: 10;
}
.admin-link:hover {
  background: #e1202d;
  color: #ffffff;
}
.admin-link-icon {
  font-size: 14px;
}

@media only screen and (max-width: 550px) {
  .admin-link {
    top: 12px;
    right: 12px;
    padding: 6px 12px;
    font-size: 10px;
  }
  .subtitle {
    font-size: 15px;
    padding: 0 10px;
  }
}
h1 {
  color: #e1202d;
  text-transform: uppercase;
  font-size: 100px;
  font-weight: 700;
  letter-spacing: 0.015em;
}
h1::after {
  content: "";
  width: 200px;
  display: block;
  background: #000000;
  margin: 30px auto;
  line-height: 1.1;
}
h1 span {
  color: #000000;
}
.btn {
  display: inline-block;
  padding: 15px 30px;
  border: 2px solid #e1202d;
  text-transform: uppercase;
  letter-spacing: 0.015em;
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
  color: #e1202d;
  text-decoration: none;
  -webkit-transition: all 0.4s;
  -moz-transition: all 0.4s;
  -o-transition: all 0.4s;
  transition: all 0.4s;
}
.btn:hover {
  color: #ffffff;
  border-color: #000000;
  background-color: #000000;
}
h2 {
  color: #000000;
  text-transform: uppercase;
  font-size: 35px;
  font-weight: 700;
  letter-spacing: 0.015em;
}

@media only screen and (max-width: 1000px) {
  h1 {
    font-size: 70px;
  }
}

@media only screen and (max-width: 800px) {
  h1 {
    font-size: 48px;
  }
  h1::after {
    height: 8px;
  }
}
@media only screen and (max-width: 550px) {
  .btn {
    display: inline-block;
    padding: 5px 15px;
    border: 2px solid #e1202d;
    text-transform: uppercase;
    letter-spacing: 0.009em;
    font-size: 13px;
    font-weight: 400;
    line-height: 1;
    color: #e1202d;
    text-decoration: none;
    -webkit-transition: all 0.4s;
    -moz-transition: all 0.4s;
    -o-transition: all 0.4s;
    transition: all 0.4s;
  }
}

@media only screen and (max-width: 430px) {
  .btn {
    display: inline-block;
    padding: 5px 10px;
    border: 1px solid #e1202d;
    text-transform: uppercase;
    letter-spacing: 0.005em;
    font-size: 10px;
    font-weight: 400;
    line-height: 1;
    color: #e1202d;
    text-decoration: none;
    -webkit-transition: all 0.4s;
    -moz-transition: all 0.4s;
    -o-transition: all 0.4s;
    transition: all 0.4s;
  }
}

@media only screen and (max-width: 568px) {
  .intro {
    padding: 0 10px;
  }
  h1 {
    font-size: 30px;
  }
  h1::after {
    height: 6px;
  }
  p {
    font-size: 18px;
  }
  .btn {
    font-size: 16px;
  }
}

@media only screen and (max-width: 320px) {
  h1 {
    font-size: 28px;
  }
  h1::after {
    height: 4px;
  }
}