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

:root {
  --color-white: #FFFFFF;
  --color-aqua: #7CD4E4;
  --color-graphite: #4A4A4A;
  --color-blue: #A3C9E2;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--color-white);
  color: var(--color-graphite);
  line-height: 1.7;
  font-size: 18px;
}

a {
  color: var(--color-aqua);
  text-decoration: none;
  transition: color 0.2s linear;
}

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

.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 40px;
}

.wide-container {
  max-width: 1620px;
  margin: 0 auto;
  padding: 0 40px;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-white);
  border-bottom: 1px solid #E8E8E8;
  z-index: 1000;
  padding: 15px 0;
}

.header-content {
  max-width: 1620px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--color-graphite);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo img {
  width: 32px;
  height: 32px;
}

.logo:hover {
  color: var(--color-aqua);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
  align-items: center;
}

nav a {
  color: var(--color-graphite);
  font-size: 16px;
  position: relative;
  display: block;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-aqua);
  transform: scaleX(0);
  transition: transform 0.2s linear;
}

nav a:hover::after {
  transform: scaleX(1);
}

nav a.active::after {
  transform: scaleX(1);
}

main {
  margin-top: 60px;
  padding-top: 80px;
}

section {
  padding: 100px 0;
}

h1, h2, h3 {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-weight: bold;
  letter-spacing: -0.5px;
  line-height: 1.2;
}

h1 {
  font-size: 56px;
  color: var(--color-graphite);
  margin-bottom: 24px;
}

h2 {
  font-size: 42px;
  color: var(--color-graphite);
  margin-bottom: 32px;
}

h3 {
  font-size: 28px;
  color: var(--color-graphite);
  margin-bottom: 16px;
}

p {
  margin-bottom: 20px;
  line-height: 1.7;
}

.hero {
  background-color: var(--color-white);
  padding: 60px 0 100px;
  border-bottom: 1px solid #F0F0F0;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 40px;
}

.hero img {
  max-width: 100%;
  height: auto;
  max-height: 500px;
  width: auto;
}

.hero-text h1 {
  margin-bottom: 16px;
}

.hero-text p {
  font-size: 20px;
  color: var(--color-aqua);
  max-width: 800px;
}

.cta-button {
  background-color: var(--color-aqua);
  color: var(--color-white);
  padding: 14px 32px;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s linear;
  display: inline-block;
}

.cta-button:hover {
  background-color: var(--color-graphite);
  color: var(--color-white);
  transform: translateY(-2px);
}

.section-intro {
  text-align: center;
  margin-bottom: 60px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-intro h2 {
  margin-bottom: 20px;
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.card {
  background-color: var(--color-white);
  border: 1px solid #E8E8E8;
  padding: 32px;
  border-radius: 8px;
  transition: all 0.2s linear;
}

.card:hover {
  border-color: var(--color-aqua);
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(122, 212, 228, 0.1);
}

.card h3 {
  margin-bottom: 16px;
  color: var(--color-graphite);
}

.card p {
  margin-bottom: 0;
  font-size: 16px;
  line-height: 1.7;
}

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 60px;
}

.split-section img {
  max-width: 100%;
  height: auto;
  max-height: 400px;
}

.split-content h3 {
  margin-bottom: 20px;
}

.split-content p {
  font-size: 16px;
  line-height: 1.8;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
}

.blog-card {
  background-color: var(--color-white);
  border: 1px solid #E8E8E8;
  overflow: hidden;
  transition: all 0.2s linear;
  cursor: pointer;
}

.blog-card:hover {
  border-color: var(--color-aqua);
  transform: translateY(-4px);
}

.blog-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.blog-card-content {
  padding: 24px;
}

.blog-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

.blog-card p {
  font-size: 15px;
  margin-bottom: 0;
}

.faq-item {
  border-bottom: 1px solid #E8E8E8;
  padding: 24px 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-question h3 {
  margin-bottom: 0;
  font-size: 20px;
}

.faq-toggle {
  font-size: 24px;
  color: var(--color-aqua);
  transition: transform 0.2s linear;
}

.faq-toggle.active {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #F0F0F0;
  font-size: 16px;
  line-height: 1.8;
}

.faq-answer.active {
  display: block;
}

footer {
  background-color: var(--color-graphite);
  color: var(--color-white);
  padding: 60px 0;
  border-top: 1px solid #E8E8E8;
}

.footer-content {
  max-width: 1620px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  font-size: 18px;
  margin-bottom: 16px;
  color: var(--color-aqua);
}

.footer-section ul {
  list-style: none;
}

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

.footer-section a {
  color: var(--color-white);
  font-size: 15px;
}

.footer-section a:hover {
  color: var(--color-aqua);
}

.footer-contact {
  font-size: 15px;
  line-height: 1.8;
}

.footer-contact p {
  margin-bottom: 8px;
}

.footer-divider {
  border-top: 1px solid #666;
  margin: 40px 0;
}

.footer-bottom {
  max-width: 1620px;
  margin: 0 auto;
  padding: 0 40px;
  text-align: center;
  font-size: 14px;
  color: #CCCCCC;
}

.footer-bottom a {
  color: var(--color-aqua);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--color-graphite);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #E8E8E8;
  border-radius: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  transition: border-color 0.2s linear;
}

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

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-disclaimer {
  background-color: #F8F8F8;
  border-left: 3px solid var(--color-aqua);
  padding: 16px;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-graphite);
}

.disclaimer-section {
  background-color: #F8F8F8;
  border-left: 3px solid var(--color-aqua);
  padding: 24px;
  margin: 40px 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-graphite);
}

.disclaimer-section h3 {
  margin-top: 0;
  margin-bottom: 16px;
}

.education-banner {
  background-color: var(--color-blue);
  color: var(--color-white);
  padding: 16px;
  text-align: center;
  font-weight: 600;
  border-radius: 8px;
  margin: 40px 0;
}

.thank-you-page {
  text-align: center;
  padding: 80px 20px;
  min-height: calc(100vh - 300px);
}

.thank-you-page h1 {
  margin-bottom: 32px;
}

.thank-you-page p {
  font-size: 18px;
  margin-bottom: 32px;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-graphite);
  color: var(--color-white);
  padding: 24px 40px;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.15);
  z-index: 999;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  max-height: 180px;
  overflow-y: auto;
}

.cookie-banner.hidden {
  display: none;
}

.cookie-text {
  flex: 1;
  font-size: 14px;
  line-height: 1.6;
}

.cookie-buttons {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

.cookie-btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s linear;
  white-space: nowrap;
}

.cookie-btn-accept {
  background-color: var(--color-aqua);
  color: var(--color-white);
}

.cookie-btn-accept:hover {
  background-color: var(--color-blue);
}

.cookie-btn-reject {
  background-color: transparent;
  color: var(--color-white);
  border: 1px solid var(--color-white);
}

.cookie-btn-reject:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.cookie-btn-learn {
  background-color: var(--color-blue);
  color: var(--color-white);
}

.cookie-btn-learn:hover {
  background-color: var(--color-aqua);
}

@media (max-width: 768px) {
  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 28px;
  }

  h3 {
    font-size: 22px;
  }

  body {
    font-size: 16px;
  }

  .container,
  .wide-container {
    padding: 0 20px;
  }

  header {
    padding: 12px 0;
  }

  .header-content {
    padding: 0 20px;
  }

  main {
    padding-top: 60px;
  }

  nav ul {
    gap: 16px;
  }

  nav a {
    font-size: 14px;
  }

  section {
    padding: 60px 0;
  }

  .hero {
    padding: 40px 0 60px;
  }

  .hero-content {
    gap: 24px;
  }

  .hero img {
    max-height: 300px;
  }

  .split-section {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .split-section img {
    max-height: 300px;
  }

  .grid-cards {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .card {
    padding: 24px;
  }

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

  .footer-content {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .cookie-banner {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 20px;
  }

  .cookie-buttons {
    width: 100%;
    flex-direction: column;
  }

  .cookie-btn {
    width: 100%;
    text-align: center;
  }
}