body {
  margin: 0;
  font-family: "Roboto", sans-serif;
  line-height: 1.2;
  color: #333;
  background-color: #faf9fa;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 40px;
}
.header {
  background-color: #faf9fa;
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
}
.header__logo-link {
  display: inline-block;
}
.header__logo {
  height: 40px;
  width: auto;
}
.header__nav {
  display: flex;
}
.header__menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
}
.header__menu-item {
  margin-left: 12px;
}
.header__menu-link {
  color: #000;
  text-decoration: none;
  font-weight: 700;
  padding: 10px 12px;
  display: block;
  border-radius: 8px;
}
.header__menu-link:hover,
.header__menu-link:focus {
  background-color: #eee;
  outline: none;
}
.header__burger {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  padding: 0;
  border-radius: 8px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  z-index: 1100;
}
.header__burger:focus {
  outline: none;
}
.header__burger-bar {
  position: absolute;
  left: 10px;
  right: 10px;
  height: 4px;
  background: #000;
  border-radius: 3px;
  transition: transform 0.25s ease, top 0.25s ease, opacity 0.2s ease;
}
.header__burger-bar:nth-child(1) {
  top: 14px;
}
.header__burger-bar:nth-child(2) {
  top: 21px;
}
.header__burger-bar:nth-child(3) {
  top: 28px;
}
.header.is-open .header__burger-bar:nth-child(1) {
  top: 21px;
  transform: rotate(45deg);
}
.header.is-open .header__burger-bar:nth-child(2) {
  opacity: 0;
}
.header.is-open .header__burger-bar:nth-child(3) {
  top: 21px;
  transform: rotate(-45deg);
}
.header__backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 900;
  display: none;
}
footer {
  background-color: #f8f8f8;
  padding: 20px 0;
  text-align: center;
  color: #666;
  border-top: 1px solid #e8e8e8;
}
.page-stub {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  margin-top: 20px;
}
.page-stub h1 {
  margin-top: 0;
  font-size: 28px;
}
.page-stub .muted {
  color: #777;
  font-size: 14px;
}
@media (max-width: 768px) {
  .header__burger {
    display: inline-block;
  }
  .header__nav {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    background: #fff;
    transform: translateY(-110%);
    transition: transform 0.3s ease;
    z-index: 1000;
    padding: 80px 20px 20px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  }
  .header.is-open .header__nav {
    transform: translateY(0);
  }
  .header__menu {
    flex-direction: column;
    gap: 6px;
  }
  .header__menu-item {
    margin-left: 0;
  }
  .header__menu-link {
    padding: 14px 12px;
    font-size: 18px;
  }
  .header.is-open .header__backdrop {
    display: block;
  }
}