.site-header {
  background: #fff;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #333;
  font-size: 20px;
  font-weight: bold;
}

.logo-icon {
  font-size: 32px;
}

.main-nav {
  display: flex;
  gap: 30px;
}

.main-nav a {
  text-decoration: none;
  color: #666;
  font-size: 16px;
  padding: 8px 0;
  position: relative;
  transition: color 0.3s;
}

.main-nav a:hover,
.main-nav a.active {
  color: #667eea;
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: #667eea;
}

.header-actions {
  display: flex;
  gap: 15px;
}

.btn-contact {
  padding: 10px 25px;
  border-radius: 8px;
  border: none;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-contact:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-login {
  padding: 10px 25px;
  border-radius: 8px;
  border: 2px solid #667eea;
  background: transparent;
  color: #667eea;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-login:hover {
  background: #667eea;
  color: #fff;
}

.main-content {
  background: #f5f5f5;
  min-height: calc(100vh - 80px);
}

.hero-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  text-align: center;
  padding: 80px 20px;
}

.hero-content h1 {
  font-size: 48px;
  font-weight: bold;
  margin: 0 0 20px 0;
}

.hero-content p {
  font-size: 20px;
  opacity: 0.9;
  margin: 0 0 10px 0;
}

.hero-subtitle {
  font-size: 16px;
  opacity: 0.8;
}

.features-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 30px;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 36px;
  color: #333;
  margin: 0 0 15px 0;
}

.section-subtitle {
  font-size: 18px;
  color: #666;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 25px;
}

.feature-card {
  background: #fff;
  border-radius: 16px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.feature-card.available {
  border: 2px solid #4facfe;
}

.feature-icon {
  font-size: 56px;
  margin-bottom: 20px;
}

.feature-card h3 {
  margin: 0 0 15px 0;
  font-size: 24px;
  color: #333;
}

.feature-card p {
  margin: 0 0 20px 0;
  color: #666;
  font-size: 15px;
  line-height: 1.6;
}

.feature-status {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
}

.available .feature-status {
  background: #e6f7ff;
  color: #1890ff;
}

.feature-card:not(.available) .feature-status {
  background: #fff7e6;
  color: #fa8c16;
}

.btn-primary,
.btn-secondary,
.btn-large {
  padding: 12px 30px;
  border-radius: 8px;
  border: none;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
}

.btn-secondary {
  background: #f0f0f0;
  color: #333;
}

.btn-large {
  padding: 15px 40px;
  font-size: 16px;
}

.btn-primary:hover,
.btn-secondary:hover,
.btn-large:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.cta-section {
  background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  text-align: center;
  padding: 80px 20px;
  color: #fff;
}

.cta-content h2 {
  font-size: 36px;
  margin: 0 0 20px 0;
}

.cta-content p {
  font-size: 18px;
  opacity: 0.9;
  margin: 0 0 40px 0;
}

.cta-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-actions .btn-primary {
  background: #fff;
  color: #fa709a;
}

.cta-actions .btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  border: 2px solid #fff;
}

.site-footer {
  background: #1a1a2e;
  color: #fff;
  padding: 60px 30px 30px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  font-size: 16px;
  margin: 0 0 20px 0;
  color: #fff;
}

.footer-section a,
.footer-section p {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  display: block;
  margin-bottom: 12px;
  font-size: 14px;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: #fff;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  margin: 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.show {
  display: flex;
}

.modal-content {
  background: #fff;
  border-radius: 16px;
  max-width: 500px;
  width: 100%;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  border-bottom: 1px solid #f0f0f0;
}

.modal-header h2 {
  margin: 0;
  font-size: 20px;
  color: #333;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: #999;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all 0.3s;
}

.modal-close:hover {
  background: #f0f0f0;
  color: #333;
}

.contact-form {
  padding: 25px;
}

.login-form {
  padding: 25px;
}

.login-modal {
  max-width: 450px;
}

.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-check-input {
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.form-check-label {
  font-size: 14px;
  color: #666;
  cursor: pointer;
}

.alert {
  padding: 12px 15px;
  border-radius: 8px;
  font-size: 14px;
  margin-top: 15px;
}

.alert-danger {
  background: #fff1f0;
  border: 1px solid #ffccc7;
  color: #ff4d4f;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  color: #666;
  font-weight: 500;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 10px 15px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  font-size: 14px;
  box-sizing: border-box;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: #667eea;
}

.form-input[readonly] {
  background: #f5f5f5;
  color: #999;
}

.form-textarea {
  resize: vertical;
  font-family: inherit;
}

.form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 30px;
}

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 15px;
  }

  .main-nav {
    gap: 15px;
    font-size: 14px;
  }

  .hero-section {
    padding: 60px 20px;
  }

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

  .hero-content p {
    font-size: 16px;
  }

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

  .cta-actions {
    flex-direction: column;
  }

  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}