/* CSS */
.button-71 {
  background-color: #0078d0;
  border: 0;
  border-radius: 56px;
  color: #fff;
  cursor: pointer;
  display: inline-block;
  font-family: system-ui,-apple-system,system-ui,"Segoe UI",Roboto,Ubuntu,"Helvetica Neue",sans-serif;
  font-size: 18px;
  font-weight: 600;
  outline: 0;
  padding: 16px 21px;
  position: relative;
  text-align: center;
  text-decoration: none;
  transition: all .3s;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.button-71:before {
  background-color: initial;
  background-image: linear-gradient(#fff 0, rgba(255, 255, 255, 0) 100%);
  border-radius: 125px;
  content: "";
  height: 50%;
  left: 4%;
  opacity: .5;
  position: absolute;
  top: 0;
  transition: all .3s;
  width: 92%;
}

.button-71:hover {
  box-shadow: rgba(255, 255, 255, .2) 0 3px 15px inset, rgba(0, 0, 0, .1) 0 3px 5px, rgba(0, 0, 0, .1) 0 10px 13px;
  transform: scale(1.05);
}

@media (min-width: 768px) {
  .button-71 {
    padding: 16px 48px;
  }
}
/* Общие стили */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
}

a {
    color: #0073e6;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Шапка */
header {
    background-color: #0073e6;
    color: #fff;
    padding: 20px 15px;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2em;
}

header p {
    margin: 5px 0 0 0;
}

/* Навигация */
nav {
    background-color: #005bb5;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

nav li {
    margin: 0 15px;
}

nav a {
    color: #fff;
    font-weight: bold;
    padding: 15px 0;
    display: block;
}

/* Основной контент */
article, main {
    max-width: 1000px;
    margin: 20px auto;
    padding: 0 15px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    border-radius: 8px;
}

h1, h2, h3 {
    color: #0073e6;
}

h2 {
    margin-top: 25px;
}

ul, ol {
    margin-left: 20px;
}

/* Разделитель */
hr {
    border: 0;
    border-top: 1px solid #ddd;
    margin: 25px 0;
}

/* Футер */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 15px 10px;
    margin-top: 30px;
}
/* Адаптивное меню */
nav ul {
    flex-direction: row;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 15px;
}

.menu-toggle div {
    width: 25px;
    height: 3px;
    background-color: #fff;
    margin: 4px 0;
    transition: 0.4s;
}

@media (max-width: 768px) {
    nav ul {
        display: none;
        flex-direction: column;
        background-color: #005bb5;
        width: 100%;
    }

    nav ul.show {
        display: flex;
    }

    .menu-toggle {
        display: flex;
        justify-content: flex-end;
        margin-right: 15px;
    }

    nav li {
        margin: 0;
        text-align: center;
        padding: 10px 0;
        border-top: 1px solid #004494;
    }
}