:root {
  --primary-color: #34495D;
  --secondary-color: #2A3A4D;
  --accent-color: #EE7738;
  --light-color: #F5F7FA;
  --dark-color: #1C2833;
  --gradient-primary: linear-gradient(135deg, #577BC1 0%, #34495D 100%);
  --hover-color: #2C3E50;
  --background-color: #FDFEFE;
  --text-color: #34495E;
  --border-color: rgba(238, 119, 56, 0.2);
  --divider-color: rgba(52, 73, 93, 0.1);
  --shadow-color: rgba(52, 73, 93, 0.15);
  --highlight-color: #FFEB00;
  --main-font: 'Roboto Condensed', sans-serif;
  --alt-font: 'Open Sans', sans-serif;
}

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

body {
  font-family: var(--alt-font);
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

.bg-pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.05;
  pointer-events: none;
}

header,
footer,
main {
  position: relative;
  z-index: 20;
}

header {
  background: linear-gradient(135deg, #34495D 0%, #577BC1 100%);
  padding: 1.5rem 2rem;
  box-shadow: 0 2px 10px var(--shadow-color);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.75rem;
  font-weight: 700;
  color: #ffffff;
  font-family: var(--main-font);
  text-decoration: none;
}

.logo-icon {
  width: 42px;
  height: 42px;
}

.header-decoration {
  display: none;
}

main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 3rem 1.5rem;
  position: relative;
  z-index: 10;
  min-height: calc(100vh - 160px);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 2.5rem;
  align-items: start;
}

.left-column {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.product-image-container {
  background: #ffffff;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  border: 2px solid var(--border-color);
  text-align: center;
}

.product-image-container picture {
  display: block;
}

.product-image-container img {
  width: 100%;
  max-width: 340px;
  height: auto;
  margin: 0 auto;
  display: block;
}

.guarantee-box {
  background: linear-gradient(135deg, #FFEB00 0%, #FFC107 100%);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: 0 4px 15px rgba(255, 235, 0, 0.3);
  border: 2px solid #F9A825;
  text-align: center;
}

.guarantee-box h3 {
  font-family: var(--main-font);
  font-size: 1.5rem;
  color: #34495D;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.guarantee-box p {
  color: #34495D;
  font-size: 1rem;
  font-weight: 600;
}

.cta-box {
  background: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 15px var(--shadow-color);
  border: 2px solid var(--border-color);
  text-align: center;
}

.price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 1.5rem;
  font-family: var(--main-font);
}

.cta-button {
  display: inline-block;
  background: var(--gradient-primary);
  color: #ffffff;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.125rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(52, 73, 93, 0.3);
  border: none;
  cursor: pointer;
}

.cta-button:hover {
  background: linear-gradient(135deg, #34495D 0%, #2C3E50 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(52, 73, 93, 0.4);
}

.right-column {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.content-box {
  background: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 15px var(--shadow-color);
  border: 2px solid var(--border-color);
}

.content-box h2 {
  font-family: var(--main-font);
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-weight: 700;
}

.content-box h3 {
  font-family: var(--main-font);
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-weight: 700;
}

.content-box p {
  color: var(--text-color);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.highlight-text {
  background: linear-gradient(135deg, #FFEB00 0%, #FFC107 100%);
  padding: 1.5rem;
  border-radius: 8px;
  font-weight: 700;
  color: #34495D;
  text-align: center;
  font-size: 1.25rem;
  margin-top: 1rem;
  border: 2px solid #F9A825;
}

.features-list {
  list-style: none;
  display: grid;
  gap: 1rem;
}

.features-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background: var(--light-color);
  border-radius: 8px;
  border-left: 4px solid var(--accent-color);
}

.feature-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  color: var(--accent-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.feature-card {
  text-align: center;
  padding: 1.5rem;
  background: var(--light-color);
  border-radius: 12px;
  border: 2px solid var(--border-color);
}

.feature-card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
}

.feature-card h4 {
  font-family: var(--main-font);
  font-size: 1.125rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.testimonials-section {
  background: linear-gradient(135deg, #34495D 0%, #2A3A4D 100%);
  padding: 4rem 1.5rem;
  margin-top: 3rem;
}

.testimonials-container {
  max-width: 1400px;
  margin: 0 auto;
}

.testimonials-section h2 {
  font-family: var(--main-font);
  font-size: 2.25rem;
  color: #ffffff;
  text-align: center;
  margin-bottom: 3rem;
  font-weight: 700;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.testimonial-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 2px solid var(--border-color);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.testimonial-avatar {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.5rem;
  font-weight: 700;
}

.testimonial-info h4 {
  font-family: var(--main-font);
  font-size: 1.125rem;
  color: var(--primary-color);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.testimonial-rating {
  color: #FFEB00;
  font-size: 1rem;
}

.testimonial-text {
  color: var(--text-color);
  line-height: 1.7;
  font-style: italic;
}

footer {
  background: linear-gradient(135deg, #1C2833 0%, #34495D 100%);
  color: #E8E8E8;
  padding: 2.5rem 2rem;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  font-family: var(--main-font);
  text-decoration: none;
}

.footer-logo-icon {
  width: 36px;
  height: 36px;
}

.footer-nav {
  list-style: none;
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-nav a {
  color: #E8E8E8;
  text-decoration: none;
  transition: color 0.3s ease;
  font-size: 0.95rem;
}

.footer-nav a:hover {
  color: #ffffff;
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.875rem;
  color: #B8B8B8;
}

.footer-bottom a {
  color: #EE7738;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-bottom a:hover {
  color: #FFEB00;
}

@media (min-width: 768px) {
  .header-decoration {
    display: block;
    opacity: 0.15;
  }
}

@media (max-width: 991px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .left-column {
    order: 1;
  }

  .right-column {
    order: 2;
  }
}

@media (max-width: 767px) {
  header {
    padding: 1rem 1.5rem;
  }

  .logo {
    font-size: 1.5rem;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
  }

  main {
    padding: 2rem 1rem;
    min-height: auto;
  }

  .product-image-container {
    padding: 1.5rem;
  }

  .product-image-container img {
    max-width: 280px;
  }

  .content-box h2 {
    font-size: 1.75rem;
  }

  .content-box h3 {
    font-size: 1.25rem;
  }

  .price {
    font-size: 2rem;
  }

  .testimonials-section {
    padding: 3rem 1rem;
  }

  .testimonials-section h2 {
    font-size: 1.75rem;
  }

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

  .footer-container {
    flex-direction: column;
    text-align: center;
  }

  .footer-nav {
    flex-direction: column;
    gap: 1rem;
    align-items: center;
  }

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