/* Сброс и базовые стили */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
  padding-top: 80px;
}

/* Фиксированный хедер */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #eaeaea;
  z-index: 1000;
  padding: 1rem 0;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #2563eb;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.3s;
}

nav a:hover {
  color: #2563eb;
}

/* Общие стили секций */
section {
  padding: 5rem 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

h2 {
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-align: center;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.subtitle {
  font-size: 1.25rem;
  color: #666;
  margin-bottom: 2rem;
  text-align: center;
}

.text-center {
  text-align: center;
}

.mb-3 {
  margin-bottom: 3rem;
}

/* Hero секция */
.hero {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  padding: 8rem 0;
  text-align: center;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: #2563eb;
  color: white;
}

.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: #2563eb;
  border: 2px solid #2563eb;
}

.btn-secondary:hover {
  background: #2563eb;
  color: white;
  transform: translateY(-2px);
}

/* Блоки с карточками */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background: white;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  border: 1px solid #eaeaea;
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.card-icon {
  width: 60px;
  height: 60px;
  background: #000;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

/* Списки */
ul {
  list-style-position: inside;
  margin-bottom: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Таблицы */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.comparison-table th,
.comparison-table td {
  padding: 1.5rem;
  text-align: left;
  border-bottom: 1px solid #eaeaea;
}

.comparison-table th {
  background: #f8fafc;
  font-weight: 600;
  color: #333;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.our-solution {
  background: #dcfce7;
  font-weight: 600;
}

/* Сетка услуг */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.service-item {
  background: #f8fafc;
  padding: 2rem;
  border-radius: 8px;
  border-left: 4px solid #2563eb;
}

/* Форма */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 1rem;
}

.form-group textarea {
  height: 120px;
  resize: vertical;
}

.cta-section {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-radius: 12px;
  padding: 4rem;
  text-align: center;
}

/* Адаптивность */
@media (max-width: 768px) {
  body {
    padding-top: 70px;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .comparison-table {
    display: block;
    overflow-x: auto;
  }

  .cta-section {
    padding: 2rem;
  }
}