* {
  box-sizing: border-box;
}

/* БАЗА САЙТА */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f0f1a;
  color: #ffffff;
  line-height: 1.6;
}

/* КОНТЕЙНЕР */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
}

/* СЕКЦИИ */
.section {
  padding: 60px 20px;
}

/* ЗАГОЛОВКИ */
h1, h2, h3 {
  color: #ffffff;
}

/* ССЫЛКИ (обычные) */
a {
  color: #7aa2ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* =========================
   НАВИГАЦИЯ (КНОПКИ)
========================= */

.nav-seo {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 25px 0 35px;
}

/* КНОПКИ */
.nav-seo a {
  padding: 12px 18px;
  border-radius: 14px;

  background: linear-gradient(135deg, #1b1f3a, #2b3a67);
  border: 1px solid rgba(122, 162, 255, 0.35);

  color: #ffffff;
  font-weight: 600;
  font-size: 14px;

  text-decoration: none;

  transition: all 0.25s ease;
  box-shadow: 0 4px 15px rgba(0,0,0,0.25);
}

/* hover эффект */
.nav-seo a:hover {
  transform: translateY(-3px) scale(1.05);
  background: linear-gradient(135deg, #2b3a67, #3b4f8f);
  border-color: #7aa2ff;
  box-shadow: 0 6px 20px rgba(122, 162, 255, 0.25);
}
.back-home {
  display: inline-block;
  margin-top: 30px;
  padding: 12px 20px;

  background: linear-gradient(135deg, #2b3a67, #1b1f3a);
  border: 1px solid rgba(122, 162, 255, 0.4);
  border-radius: 14px;

  color: #ffffff;
  font-weight: 600;
  text-decoration: none;

  box-shadow: 0 4px 15px rgba(0,0,0,0.25);
  transition: all 0.25s ease;
}

.back-home:hover {
  transform: translateY(-3px) scale(1.05);
  background: linear-gradient(135deg, #3b4f8f, #2b3a67);
  border-color: #7aa2ff;
  box-shadow: 0 6px 20px rgba(122, 162, 255, 0.25);
}
.material-link{
    color:white;
    text-decoration:none;
    display:block;
}

.material-link:hover h3{
    color:#38bdf8;
}
.material-button {
    display: inline-flex;
    justify-content: center;
    align-items: center;

    padding: 12px 24px;
    margin: 8px;

    text-decoration: none;
    color: #ffffff;

    font-weight: 800;
    font-size: 15px;

    background: linear-gradient(135deg, #050B1A, #0057FF);

    border: 1px solid #00E5FF;
    border-radius: 12px;

    transition: 0.25s ease;

    width: auto;
    box-shadow: 0 0 12px rgba(0,229,255,0.25);
}

.material-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 22px rgba(0,229,255,0.7);
}