/* Сброс */
* {margin:0; padding:0; box-sizing:border-box;}
body, html {font-family:'Arial', sans-serif; scroll-behavior:smooth;}

/* Живой градиент */
body {
  background: linear-gradient(-45deg, #6a0dad, #ff4500, #ffdd00, #00aaff);
  background-size: 400% 400%;
  animation: gradientBG 20s ease infinite;
  color: #fff;
}

/* Canvas для частиц */
#particles {
  position: fixed;
  top:0; left:0;
  width:100%;
  height:100%;
  z-index:-1;
}

/* Hero */
.hero {
  height: 100vh;
  display:flex;
  justify-content:center;
  align-items:center;
  text-align:center;
  padding:0 20px;
}

.hero h1 {font-size:3rem; margin-bottom:1rem;}
.hero p {margin-bottom:1rem; font-size:1.2rem;}

.btn {
  display:inline-block;
  padding:0.8rem 2rem;
  background: rgba(255,255,255,0.9);
  color:#111;
  font-weight:bold;
  border-radius:50px;
  text-decoration:none;
  transition: all 0.3s ease;
}

.btn:hover {
  transform: scale(1.05);
  background: rgba(255,255,255,1);
}

/* Секции */
.section {
  padding:80px 20px;
  max-width:1000px;
  margin:0 auto 40px;
  background: rgba(0,0,0,0.3);
  border-radius:20px;
  backdrop-filter: blur(5px);
  opacity:0;
  transform:translateY(20px);
}

/* Заголовки */
.section h2 {text-align:center; font-size:2.2rem; margin-bottom:1rem;}
.section p, .section ul {line-height:1.6; margin-bottom:1rem;}
ul {list-style-type: disc; padding-left:20px;}

/* Карточки */
.cards {
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  justify-content:center;
}

.card {
  background: rgba(255,255,255,0.1);
  padding:20px;
  border-radius:15px;
  width:250px;
  box-shadow:0 8px 20px rgba(0,0,0,0.3);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-10px) scale(1.05);
}

/* Контакты */
.contacts a {color:#ffdd00; text-decoration:none;}
.contacts a:hover{text-decoration:underline;}

/* Футер */
footer {
  text-align:center;
  padding:20px;
  font-size:0.9rem;
}

/* Анимации секций */
@keyframes fadeIn {
  to {opacity:1; transform:translateY(0);}
}

@keyframes gradientBG {
  0%{background-position:0% 50%;}
  50%{background-position:100% 50%;}
  100%{background-position:0% 50%;}
}