:root {
  --color-primary: #4c1e51;
  --color-secondary: #e63946;
  --color-accent: #457b9d;
  --color-light: #f1faee;
  --color-dark: #1d3557;
  --color-gray: #6c757d;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
  --border-radius: 10px;
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Roboto', 'Arial', sans-serif;
  background-color: #f8f9fa;
  color: var(--color-dark);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Типография */
h1, h2, h3, h4, h5 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1rem;
}

a {
  text-decoration: none;
  color: var(--color-primary);
  transition: var(--transition);
}

a:hover {
  color: var(--color-secondary);
}

/* Кнопки */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  color: white;
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
  color: white;
}

/* Шапка сайта */
.header {
  background-color: white;
  box-shadow: var(--shadow-sm);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  display: flex;
  align-items: center;
}

.logo svg {
  height: 30px;
  margin-right: 10px;
}

.nav-menu {
  display: flex;
  list-style: none;
}

.nav-item {
  margin-left: 25px;
}

.nav-link {
  color: var(--color-dark);
  font-weight: 500;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-primary);
  cursor: pointer;
}

/* Главная секция */
.hero {
  padding-top: 120px;
  padding-bottom: 80px;
  background: linear-gradient(120deg, #1d355799, #4c1e5199), 
              url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Crect width='100' height='100' fill='%234c1e51' fill-opacity='0.05'/%3E%3Cpath d='M0 0 L100 100 M100 0 L0 100' stroke='%23e63946' stroke-width='1' stroke-opacity='0.1'/%3E%3C/svg%3E");
  background-size: cover;
  color: white;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  font-size: 2.8rem;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  font-weight: 400;
}

/* Преимущества */
.features {
  padding: 80px 0;
  background-color: white;
}

.section-title {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 50px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  margin: 15px auto 0;
  border-radius: 2px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.feature-card {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 30px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

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

.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  border-radius: 50%;
}

.feature-icon svg {
  width: 30px;
  height: 30px;
  fill: white;
}

.feature-title {
  font-size: 1.3rem;
  margin-bottom: 15px;
}

/* Как это работает */
.how-it-works {
  padding: 80px 0;
  background-color: #f8f9fa;
}

.steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
}

.step {
  flex: 1;
  min-width: 250px;
  max-width: 350px;
  position: relative;
}

.step-number {
  position: absolute;
  top: -15px;
  left: -15px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
  z-index: 1;
}

.step-content {
  background-color: white;
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  height: 100%;
}

.step-title {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--color-primary);
}

/* CTA секция */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  color: white;
  text-align: center;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.cta-subtitle {
  margin-bottom: 30px;
  font-size: 1.1rem;
}

/* Футер */
.footer {
  padding: 60px 0 30px;
  background-color: var(--color-dark);
  color: white;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
}

.footer-column h3 {
  color: white;
  margin-bottom: 20px;
  position: relative;
  display: inline-block;
}

.footer-column h3::after {
  content: '';
  position: absolute;
  width: 30px;
  height: 3px;
  background-color: var(--color-secondary);
  bottom: -10px;
  left: 0;
}

.footer-links {
  list-style: none;
}

.footer-link {
  margin-bottom: 12px;
}

.footer-link a {
  color: rgba(255, 255, 255, 0.7);
}

.footer-link a:hover {
  color: white;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
  font-size: 1.5rem;
  font-weight: bold;
  color: white;
}

.footer-logo svg {
  width: 30px;
  height: 30px;
  margin-right: 10px;
}

.footer-description {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transition: var(--transition);
}

.social-link:hover {
  background-color: var(--color-secondary);
}

.social-link svg {
  width: 18px;
  height: 18px;
  fill: white;
}

.copyright {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
}

/* Анимации */
.fade-in {
  animation: fadeIn 1s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Адаптивность */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    flex-direction: column;
    background-color: white;
    width: 100%;
    text-align: center;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    transition: 0.3s;
    padding: 20px 0;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-item {
    margin: 15px 0;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .steps {
    flex-direction: column;
    align-items: center;
  }
  
  .step {
    width: 100%;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 1.8rem;
  }
  
  .section-title {
    font-size: 1.7rem;
  }
  
  .btn {
    padding: 10px 20px;
  }
  
  .feature-card,
  .step-content {
    padding: 20px;
  }
}