:root {
  /* Основная цветовая схема - раздельно-дополнительная */
  --primary-color: #3a6ea5; /* Синий */
  --primary-dark: #2a5080; /* Темный синий */
  --primary-light: #5187bd; /* Светлый синий */
  
  --secondary-color: #e74c3c; /* Красный */
  --secondary-dark: #c0392b; /* Темный красный */
  --secondary-light: #f76c5e; /* Светлый красный */
  
  --accent-color: #2ecc71; /* Зеленый */
  --accent-dark: #27ae60; /* Темный зеленый */
  --accent-light: #4dd787; /* Светлый зеленый */
  
  /* Нейтральные цвета */
  --light-color: #f9f9f9;
  --gray-light: #f0f0f0;
  --gray: #888888;
  --gray-dark: #444444;
  --dark-color: #222222;
  
  /* Типографика */
  --heading-font: 'Oswald', sans-serif;
  --body-font: 'Nunito', sans-serif;
  
  /* Тени и эффекты */
  --box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  --hover-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  --card-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
  
  /* Радиусы */
  --border-radius: 8px;
  --button-radius: 4px;
  
  /* Переходы */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Градиенты */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
  --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  --gradient-dark: linear-gradient(135deg, rgba(0,0,0,0.8), rgba(0,0,0,0.6));
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--body-font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-dark);
  background-color: var(--light-color);
  overflow-x: hidden;
}

/* Типографика */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--heading-font);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.5em;
  color: var(--dark-color);
}

h1 {
  font-size: 3.2rem;
  font-weight: 700;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 1.8rem;
}

h4 {
  font-size: 1.4rem;
}

p {
  margin-bottom: 1.2em;
  color: var(--gray-dark);
}

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

a:hover {
  color: var(--primary-dark);
}

ul, ol {
  margin-left: 1.5em;
  margin-bottom: 1.2em;
}

strong {
  font-weight: 700;
}

/* Контейнер */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Секция */
section {
  padding: 80px 0;
  position: relative;
}

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

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

.section-description {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px;
  font-size: 1.1rem;
  color: var(--gray);
}

/* Кнопки */
.btn,
button,
input[type="submit"] {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--button-radius);
  font-family: var(--heading-font);
  font-weight: 500;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  box-shadow: var(--box-shadow);
}

.btn:hover,
button:hover,
input[type="submit"]:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--hover-shadow);
}

.btn-primary {
  background-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: var(--primary-dark);
}

.btn-secondary {
  background-color: var(--secondary-color);
}

.btn-secondary:hover {
  background-color: var(--secondary-dark);
}

.btn-accent {
  background-color: var(--accent-color);
}

.btn-accent:hover {
  background-color: var(--accent-dark);
}

/* Хедер и навигация */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: all var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo a {
  display: block;
}

.logo img {
  max-height: 60px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
}

.nav-list li {
  margin: 0 15px;
}

.nav-list a {
  color: var(--dark-color);
  font-weight: 600;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  padding: 5px 0;
}

.nav-list a:after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--primary-color);
  transition: width var(--transition-normal);
}

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

.burger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
}

.burger-menu span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: var(--dark-color);
  border-radius: 3px;
  transition: all var(--transition-normal);
}

/* Hero секция */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: white;
  margin-top: 0;
  padding: 0;
}

.hero:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-dark);
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 700px;
  text-align: left;
}

.hero-content h1 {
  color: white;
  margin-bottom: 20px;
  font-size: 3.5rem;
  line-height: 1.2;
}

.hero-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: 30px;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  margin-top: 30px;
}

/* About секция */
.about-section {
  background-color: white;
}

.about-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 50px;
}

.about-image {
  flex: 1 1 40%;
  min-width: 300px;
}

.about-text {
  flex: 1 1 50%;
}

.image-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.image-container img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

.image-container:hover img {
  transform: scale(1.05);
}

.accordion {
  margin-top: 30px;
}

.accordion-item {
  border-bottom: 1px solid var(--gray-light);
  margin-bottom: 15px;
}

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

.accordion-header h4 {
  margin: 0;
}

.accordion-icon {
  font-size: 1.5rem;
  transition: transform var(--transition-normal);
}

.accordion-item.active .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.accordion-item.active .accordion-content {
  max-height: 500px;
}

/* Methodology секция */
.methodology-section {
  background-color: var(--gray-light);
}

.methodology-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: center;
  margin-bottom: 50px;
}

.card {
  flex: 1 1 300px;
  max-width: 350px;
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--hover-shadow);
}

.card-image {
  width: 100%;
  height: 230px;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-content {
  padding: 25px;
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.animated-icon {
  margin-bottom: 15px;
}

.animated-icon svg {
  fill: var(--primary-color);
  transition: transform var(--transition-normal);
}

.card:hover .animated-icon svg {
  transform: scale(1.2);
}

.methodology-approach {
  background-color: white;
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  margin-top: 50px;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.pillar-item {
  background-color: var(--gray-light);
  padding: 25px;
  border-radius: var(--border-radius);
  text-align: center;
  transition: transform var(--transition-normal);
}

.pillar-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow);
}

/* Statistics секция */
.statistics-section {
  background-color: white;
}

.stats-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  gap: 20px;
  margin-bottom: 60px;
}

.stat-card {
  flex: 1 1 200px;
  max-width: 250px;
  text-align: center;
  padding: 30px 20px;
  background-color: var(--gray-light);
  border-radius: var(--border-radius);
  transition: transform var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow);
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 10px;
  font-family: var(--heading-font);
}

.stats-details {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: center;
}

.stats-image {
  flex: 1 1 40%;
  min-width: 300px;
}

.stats-explanation {
  flex: 1 1 50%;
}

/* Innovation секция */
.innovation-section {
  background-color: var(--gray-light);
}

.innovation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.innovation-card {
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.innovation-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--hover-shadow);
}

.innovation-card .card-image {
  width: 100%;
  height: 220px;
}

.innovation-card .card-content {
  padding: 25px;
  text-align: center;
  flex-grow: 1;
}

.innovation-approach {
  background-color: white;
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
}

/* Resources секция */
.resources-section {
  background-color: white;
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.resource-card {
  background-color: var(--gray-light);
  padding: 30px;
  border-radius: var(--border-radius);
  transition: transform var(--transition-normal);
}

.resource-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow);
}

.resource-card h3 {
  color: var(--primary-color);
  margin-bottom: 20px;
}

.resource-card ul {
  list-style: none;
  margin-left: 0;
}

.resource-card li {
  margin-bottom: 10px;
}

.resource-card a {
  color: var(--gray-dark);
  transition: color var(--transition-fast);
  display: inline-block;
  position: relative;
}

.resource-card a:hover {
  color: var(--primary-color);
}

.resource-card a:after {
  content: '→';
  position: absolute;
  right: -20px;
  top: 0;
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.resource-card a:hover:after {
  opacity: 1;
  transform: translateX(5px);
}

/* Press секция */
.press-section {
  background-color: var(--gray-light);
}

.press-mentions {
  margin-bottom: 50px;
}

.press-item {
  display: flex;
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: 30px;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-normal);
}

.press-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--hover-shadow);
}

.press-logo {
  flex: 0 0 180px;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--gray-light);
}

.press-logo img {
  max-width: 100%;
  height: auto;
}

.press-content {
  flex: 1;
  padding: 30px;
}

.press-content h3 {
  color: var(--primary-color);
  margin-bottom: 15px;
}

.press-date {
  color: var(--gray);
  font-style: italic;
  margin-top: 15px;
}

.press-videos {
  margin-top: 50px;
}

.press-videos h3 {
  margin-bottom: 30px;
  text-align: center;
}

.video-container {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: center;
}

.video-item {
  flex: 1 1 350px;
  max-width: 400px;
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.video-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--hover-shadow);
}

.video-thumbnail {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.video-item:hover .video-thumbnail img {
  transform: scale(1.05);
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}

.play-button:before {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 20px;
  border-color: transparent transparent transparent white;
  margin-left: 5px;
}

.video-item:hover .play-button {
  background-color: rgba(255, 255, 255, 0.3);
}

.video-info {
  padding: 20px;
  text-align: center;
  flex-grow: 1;
}

.video-info h4 {
  color: var(--primary-color);
  margin-bottom: 10px;
}

/* Contact секция */
.contact-section {
  background-color: white;
}

.contact-container {
  display: flex;
  flex-wrap: wrap;
  gap: 50px;
}

.contact-info {
  flex: 1 1 300px;
}

.contact-form {
  flex: 1 1 500px;
}

.info-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 20px;
}

.info-item .animated-icon {
  margin-right: 15px;
  margin-top: 5px;
}

.office-hours {
  margin: 30px 0;
  padding: 20px;
  background-color: var(--gray-light);
  border-radius: var(--border-radius);
}

.contact-map {
  margin-top: 30px;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.contact-map img {
  display: block;
  width: 100%;
  height: auto;
}

.contact-form h3 {
  margin-bottom: 30px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--gray-light);
  border-radius: var(--button-radius);
  font-family: var(--body-font);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-checkbox {
  display: flex;
  align-items: center;
}

.form-checkbox input {
  width: auto;
  margin-right: 10px;
}

.form-checkbox label {
  margin: 0;
  font-weight: normal;
}

/* Footer */
.footer {
  background-color: var(--dark-color);
  color: white;
  padding: 70px 0 30px;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-logo {
  flex: 1 1 300px;
}

.footer-logo img {
  margin-bottom: 20px;
  max-width: 200px;
}

.footer-links {
  flex: 1 1 200px;
}

.footer-social {
  flex: 1 1 300px;
}

.footer h3 {
  color: white;
  margin-bottom: 20px;
  font-size: 1.3rem;
}

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

.footer-links ul {
  list-style: none;
  margin: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

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

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 30px;
}

.social-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
  font-weight: 500;
}

.social-links a:hover {
  color: white;
}

.newsletter h3 {
  margin-top: 20px;
}

.newsletter form {
  display: flex;
}

.newsletter input {
  flex: 1;
  padding: 12px 15px;
  border: none;
  border-radius: var(--button-radius) 0 0 var(--button-radius);
  font-family: var(--body-font);
}

.newsletter button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 0 20px;
  border-radius: 0 var(--button-radius) var(--button-radius) 0;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.newsletter button:hover {
  background-color: var(--primary-dark);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  margin: 0;
  font-size: 0.9rem;
}

.footer-legal {
  display: flex;
  gap: 20px;
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

/* Страница успеха (success.html) */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 50px 20px;
}

.success-container {
  max-width: 600px;
}

.success-icon {
  font-size: 5rem;
  color: var(--accent-color);
  margin-bottom: 30px;
}

/* Страницы с политиками (privacy.html, terms.html) */
.policy-page {
  padding-top: 150px;
  padding-bottom: 80px;
}

.policy-container {
  max-width: 800px;
  margin: 0 auto;
}

.policy-container h1 {
  margin-bottom: 40px;
}

.policy-container h2 {
  margin-top: 40px;
  margin-bottom: 20px;
}

.policy-container p,
.policy-container ul {
  margin-bottom: 20px;
}

/* Медиа-запросы */
@media (max-width: 991px) {
  h1 {
    font-size: 2.8rem;
  }
  
  h2 {
    font-size: 2.2rem;
  }
  
  .hero-content h1 {
    font-size: 3rem;
  }
  
  .methodology-cards,
  .stats-container {
    gap: 20px;
  }
  
  .contact-container {
    flex-direction: column;
  }
}

@media (max-width: 767px) {
  section {
    padding: 60px 0;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-content p {
    font-size: 1.1rem;
  }
  
  .main-nav {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: white;
    padding: 20px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
  }
  
  .main-nav.active {
    display: block;
  }
  
  .nav-list {
    flex-direction: column;
  }
  
  .nav-list li {
    margin: 10px 0;
  }
  
  .burger-menu {
    display: flex;
  }
  
  .about-content,
  .stats-details {
    flex-direction: column;
  }
  
  .press-item {
    flex-direction: column;
  }
  
  .press-logo {
    flex: auto;
    padding: 30px;
  }
}

@media (max-width: 575px) {
  h1 {
    font-size: 2.2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  .hero-content h1 {
    font-size: 2.2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }
  
  .card,
  .innovation-card,
  .resource-card {
    flex: 1 1 100%;
    max-width: 100%;
  }
  
  .newsletter form {
    flex-direction: column;
  }
  
  .newsletter input {
    border-radius: var(--button-radius);
    margin-bottom: 10px;
  }
  
  .newsletter button {
    width: 100%;
    border-radius: var(--button-radius);
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-legal {
    margin-top: 15px;
  }
}

/* Анимации */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.fadeIn {
  animation: fadeIn 1s ease forwards;
}

.slideUp {
  animation: slideUp 1s ease forwards;
}

.pulse {
  animation: pulse 2s infinite;
}