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

body {
  font-family: 'Trebuchet MS', 'Lucida Sans Unicode', sans-serif;
  color: #111827;
  background: #fafafa;
  line-height: 1.65;
}

.top-header {
  background: #059669;
  color: white;
  padding: 14px 0;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
}

.main-header {
  background: white;
  border-bottom: 3px solid #059669;
  padding: 22px 0;
  position: sticky;
  top: 0;
  z-index: 999;
}

.header-wrap {
  max-width: 1250px;
  margin: 0 auto;
  padding: 0 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 15px;
  text-decoration: none;
  color: #059669;
}

.site-logo img {
  width: 50px;
  height: 50px;
  border-radius: 12px;
}

.site-title {
  font-size: 30px;
  font-weight: 900;
}

.navigation {
  display: flex;
  list-style: none;
  gap: 38px;
}

.navigation a {
  color: #111827;
  text-decoration: none;
  font-weight: 700;
  font-size: 16px;
  transition: color 0.3s;
}

.navigation a:hover {
  color: #059669;
}

.hero-section {
  background: linear-gradient(to bottom right, #059669, #10b981);
  color: white;
  padding: 110px 30px;
  text-align: center;
}

.hero-section h1 {
  font-size: 56px;
  margin-bottom: 28px;
  font-weight: 900;
  line-height: 1.2;
}

.hero-section p {
  font-size: 24px;
  margin-bottom: 40px;
  max-width: 850px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-btn {
  background: white;
  color: #059669;
  padding: 20px 50px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 800;
  display: inline-block;
  font-size: 18px;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.hero-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.main-section {
  padding: 95px 30px;
  max-width: 1250px;
  margin: 0 auto;
}

.main-title {
  font-size: 44px;
  text-align: center;
  margin-bottom: 65px;
  color: #111827;
  font-weight: 900;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 38px;
}

.feature-item {
  background: white;
  padding: 42px;
  border-radius: 18px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
  transition: all 0.3s;
  border-left: 5px solid #059669;
}

.feature-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.feature-icon {
  font-size: 48px;
  margin-bottom: 20px;
  display: block;
}

.feature-item h3 {
  font-size: 26px;
  margin-bottom: 16px;
  color: #059669;
  font-weight: 800;
}

.feature-item p {
  color: #4b5563;
  line-height: 1.85;
  font-size: 16px;
}

.pairs-section {
  background: white;
}

.pair-item {
  background: #f9fafb;
  padding: 32px;
  border-radius: 14px;
  text-align: center;
  border: 2px solid #e5e7eb;
  transition: all 0.3s;
}

.pair-item:hover {
  border-color: #059669;
  transform: scale(1.03);
  box-shadow: 0 8px 20px rgba(5,150,105,0.15);
}

.pair-item h4 {
  font-size: 24px;
  color: #059669;
  margin-bottom: 14px;
  font-weight: 800;
}

.pair-item p {
  color: #6b7280;
  font-size: 16px;
  line-height: 1.7;
}

.site-footer {
  background: #111827;
  color: white;
  padding: 65px 30px 30px;
}

.footer-grid {
  max-width: 1250px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 42px;
  margin-bottom: 38px;
}

.site-footer h4 {
  margin-bottom: 20px;
  font-size: 20px;
  font-weight: 800;
}

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

.site-footer ul li {
  margin-bottom: 13px;
}

.site-footer a {
  color: #9ca3af;
  text-decoration: none;
  transition: color 0.3s;
  font-size: 15px;
}

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

.footer-end {
  text-align: center;
  padding-top: 28px;
  border-top: 1px solid #374151;
  color: #9ca3af;
  max-width: 1250px;
  margin: 0 auto;
  font-size: 15px;
}

@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 38px;
  }
  
  .navigation {
    flex-direction: column;
    gap: 18px;
  }
}