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

:root {
  --primary-color: #1a1a1a;
  --secondary-color: #4a4a4a;
  --accent-color: #6a6a6a;
  --text-dark: #0f0f0f;
  --text-light: #7a7a7a;
  --bg-light: #fafafa;
  --bg-white: #ffffff;
  --border-color: #e5e5e5;
  --border-radius: 8px;
  --spacing-base: 24px;
  --transition: all 0.3s ease;
  --font-size-base: 16px;
  --line-height-base: 1.6;
  --max-width: 1200px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: var(--line-height-base);
  color: var(--text-dark);
  background-color: var(--bg-white);
  font-size: var(--font-size-base);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-base);
}

.header {
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.logo {
  text-decoration: none;
  color: var(--primary-color);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: -0.5px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 32px;
  align-items: center;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 400;
  font-size: 15px;
  transition: var(--transition);
}

.nav-menu a:hover {
  color: var(--text-light);
}

.burger-menu {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  gap: 5px;
  padding: 5px;
}

.burger-menu span {
  width: 24px;
  height: 1px;
  background-color: var(--text-dark);
  transition: var(--transition);
}

.hero {
  padding: 120px 0 80px;
  text-align: center;
}

.hero-content h1 {
  font-size: 48px;
  font-weight: 300;
  color: var(--text-dark);
  margin-bottom: 24px;
  letter-spacing: -1px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 40px;
  font-weight: 400;
  line-height: 1.7;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 400;
  transition: var(--transition);
  border: 1px solid var(--text-dark);
  color: var(--text-dark);
  background-color: transparent;
}

.btn:hover {
  background-color: var(--text-dark);
  color: var(--bg-white);
}

.btn-primary {
  border-color: var(--text-dark);
  color: var(--text-dark);
}

.btn-secondary {
  border-color: var(--text-light);
  color: var(--text-light);
}

.btn-secondary:hover {
  background-color: var(--text-light);
  color: var(--bg-white);
}

.features {
  padding: 80px 0;
  background-color: var(--bg-light);
}

.features h2 {
  font-size: 36px;
  font-weight: 300;
  text-align: center;
  margin-bottom: 60px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

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

.feature-card {
  background-color: var(--bg-white);
  padding: 40px;
  border: 1px solid var(--border-color);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 22px;
  font-weight: 400;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.7;
}

.services-preview {
  padding: 80px 0;
}

.services-preview h2 {
  font-size: 36px;
  font-weight: 300;
  text-align: center;
  margin-bottom: 60px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

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

.service-card {
  border: 1px solid var(--border-color);
  overflow: hidden;
}

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

.service-card-content {
  padding: 32px;
}

.service-card h3 {
  font-size: 22px;
  font-weight: 400;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.service-card p {
  color: var(--text-light);
  line-height: 1.7;
}

.organization-content {
  padding: 80px 0;
  background-color: var(--bg-light);
}

.organization-content h2 {
  font-size: 36px;
  font-weight: 300;
  margin-bottom: 40px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.organization-text {
  max-width: 800px;
}

.organization-text h3 {
  font-size: 24px;
  font-weight: 400;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.organization-text p {
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.7;
}

.benefits {
  padding: 80px 0;
}

.benefits h2 {
  font-size: 36px;
  font-weight: 300;
  text-align: center;
  margin-bottom: 60px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
}

.benefit-item {
  padding: 32px 0;
  border-top: 1px solid var(--border-color);
}

.benefit-item h4 {
  font-size: 20px;
  font-weight: 400;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.benefit-item p {
  color: var(--text-light);
  line-height: 1.7;
}

.process {
  padding: 80px 0;
  background-color: var(--bg-light);
}

.process h2 {
  font-size: 36px;
  font-weight: 300;
  margin-bottom: 40px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.process-content {
  max-width: 800px;
}

.process-text h3 {
  font-size: 24px;
  font-weight: 400;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.process-text p {
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.7;
}

.cta {
  padding: 100px 0;
  text-align: center;
  background-color: var(--bg-white);
}

.cta h2 {
  font-size: 36px;
  font-weight: 300;
  margin-bottom: 24px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.cta p {
  font-size: 18px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.page-hero {
  padding: 100px 0 60px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.page-hero h1 {
  font-size: 42px;
  font-weight: 300;
  margin-bottom: 16px;
  color: var(--text-dark);
  letter-spacing: -1px;
}

.page-subtitle {
  font-size: 18px;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.7;
}

.about-content,
.mission {
  padding: 80px 0;
}

.about-text,
.mission-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-text h2,
.mission-content h2 {
  font-size: 32px;
  font-weight: 300;
  margin-bottom: 24px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.about-text p,
.mission-content p {
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.7;
}

.values {
  padding: 80px 0;
  background-color: var(--bg-light);
}

.values h2 {
  font-size: 32px;
  font-weight: 300;
  text-align: center;
  margin-bottom: 60px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.value-item {
  padding: 32px;
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
}

.value-item h3 {
  font-size: 22px;
  font-weight: 400;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.value-item p {
  color: var(--text-light);
  line-height: 1.7;
}

.services-content {
  padding: 80px 0;
}

.services-content h2 {
  font-size: 32px;
  font-weight: 300;
  margin-bottom: 40px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.service-detail {
  margin-bottom: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--border-color);
}

.service-detail:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.service-detail h3 {
  font-size: 26px;
  font-weight: 400;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.service-detail p {
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.7;
}

.service-detail ul {
  list-style: none;
  margin-top: 20px;
}

.service-detail li {
  color: var(--text-light);
  margin-bottom: 12px;
  padding-left: 24px;
  position: relative;
  line-height: 1.7;
}

.service-detail li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--text-dark);
}

.contact-content {
  padding: 80px 0;
}

.contact-info {
  max-width: 600px;
  margin: 0 auto 60px;
}

.contact-info h2 {
  font-size: 32px;
  font-weight: 300;
  margin-bottom: 40px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.contact-details {
  margin-bottom: 40px;
}

.contact-details p {
  color: var(--text-light);
  margin-bottom: 12px;
  line-height: 1.7;
  font-size: 16px;
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-dark);
  font-size: 15px;
  font-weight: 400;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  font-size: 15px;
  font-family: inherit;
  color: var(--text-dark);
  background-color: var(--bg-white);
  transition: var(--transition);
}

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

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

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

.checkbox-group label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.6;
  cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 2px;
  cursor: pointer;
}

.footer {
  background-color: var(--bg-light);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  margin-top: 80px;
}

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

.footer-section h3 {
  font-size: 18px;
  font-weight: 400;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.footer-section h4 {
  font-size: 16px;
  font-weight: 400;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.footer-section p {
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 8px;
  font-size: 15px;
}

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

.footer-section ul li {
  margin-bottom: 12px;
}

.footer-section ul li a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 15px;
  transition: var(--transition);
}

.footer-section ul li a:hover {
  color: var(--text-dark);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
}

.footer-bottom p {
  color: var(--text-light);
  font-size: 14px;
}

@media (max-width: 768px) {
  .burger-menu {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--bg-white);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    gap: 20px;
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .hero-content h1 {
    font-size: 32px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .features h2,
  .services-preview h2,
  .benefits h2,
  .process h2,
  .cta h2 {
    font-size: 28px;
  }

  .features-grid,
  .services-grid,
  .benefits-grid,
  .values-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .container {
    padding: 0 16px;
  }

  .hero {
    padding: 80px 0 60px;
  }

  .features,
  .services-preview,
  .organization-content,
  .benefits,
  .process,
  .cta {
    padding: 60px 0;
  }

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

  .page-hero h1 {
    font-size: 32px;
  }

  .about-content,
  .mission,
  .values,
  .services-content,
  .contact-content {
    padding: 60px 0;
  }

  .about-text h2,
  .mission-content h2 {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-base: 16px;
  }

  .hero-content h1 {
    font-size: 28px;
  }

  .btn {
    padding: 12px 24px;
    font-size: 14px;
  }

  .feature-card,
  .service-card-content,
  .value-item {
    padding: 24px;
  }

  .about-text h2,
  .mission-content h2 {
    font-size: 22px;
  }
}