:root {
  --primary-color: #2980B9;
  --secondary-color: #1F618D;
  --accent-color: #5DADE2;
  --light-color: #EBF5FB;
  --dark-color: #0B2F47;
  --gradient-primary: linear-gradient(135deg, #3498DB 0%, #2980B9 100%);
  --hover-color: #21618C;
  --background-color: #F8FCFF;
  --text-color: #34495E;
  --border-color: rgba(93, 173, 226, 0.25);
  --divider-color: rgba(31, 97, 141, 0.12);
  --shadow-color: rgba(31, 97, 141, 0.15);
  --highlight-color: #F39C12;
  --main-font: 'Oswald', 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);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--background-color);
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3Cpattern id='pattern' x='0' y='0' width='100' height='100' patternUnits='userSpaceOnUse'%3E%3Ccircle cx='25' cy='25' r='15' fill='%232980B9' opacity='0.5'/%3E%3Ccircle cx='75' cy='75' r='10' fill='%235DADE2' opacity='0.4'/%3E%3Cpath d='M50,10 L60,30 L40,30 Z' fill='%23F39C12' opacity='0.3'/%3E%3Crect x='65' y='15' width='20' height='20' fill='%232980B9' opacity='0.25' transform='rotate(45 75 25)'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='100' height='100' fill='url(%23pattern)'/%3E%3C/svg%3E");
  pointer-events: none;
}

.header-bg-decoration {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  opacity: 0.08;
  z-index: 0;
  pointer-events: none;
}

.header-bg-decoration:nth-child(1) {
  background: var(--primary-color);
  top: -50px;
  right: 10%;
}

.header-bg-decoration:nth-child(2) {
  background: var(--accent-color);
  top: 20px;
  left: 5%;
  width: 150px;
  height: 150px;
}

header {
  background: linear-gradient(135deg, var(--dark-color) 0%, var(--secondary-color) 100%);
  padding: 1.5rem 2rem;
  box-shadow: 0 4px 12px var(--shadow-color);
  position: relative;
  overflow: hidden;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  position: relative;
  z-index: 1;
}

.logo-icon {
  width: 48px;
  height: 48px;
}

.logo-text {
  font-family: var(--main-font);
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #ffffff;
}

main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 2.5rem 1rem;
  position: relative;
  z-index: 1;
}

.product-container {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

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

.product-image-wrapper {
  background: linear-gradient(135deg, #ffffff 0%, var(--light-color) 100%);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 8px 24px var(--shadow-color);
  border: 2px solid var(--border-color);
  text-align: center;
}

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

.product-image {
  max-width: 360px;
  height: auto;
  display: block;
  margin: 0 auto;
}

.guarantee-block {
  background: linear-gradient(135deg, var(--light-color) 0%, #ffffff 100%);
  border-radius: 16px;
  padding: 1.75rem;
  border: 2px solid var(--border-color);
  box-shadow: 0 6px 18px var(--shadow-color);
  position: relative;
  overflow: hidden;
}

.guarantee-block::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  background: var(--accent-color);
  opacity: 0.06;
  border-radius: 50%;
}

.guarantee-content {
  position: relative;
  z-index: 1;
}

.guarantee-title {
  font-family: var(--main-font);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.875rem;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.guarantee-icon {
  width: 32px;
  height: 32px;
}

.guarantee-text {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-color);
}

.cta-button {
  display: inline-block;
  background: var(--gradient-primary);
  color: #ffffff;
  font-family: var(--main-font);
  font-size: 1.25rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 1.125rem 2.5rem;
  border-radius: 50px;
  text-decoration: none;
  text-align: center;
  box-shadow: 0 6px 20px rgba(41, 128, 185, 0.35);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  letter-spacing: 0.5px;
}

.cta-button:hover {
  background: linear-gradient(135deg, var(--hover-color) 0%, var(--dark-color) 100%);
  box-shadow: 0 8px 28px rgba(41, 128, 185, 0.45);
  transform: translateY(-2px);
}

.cta-button:focus {
  outline: 3px solid var(--highlight-color);
  outline-offset: 3px;
}

.right-column {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.product-description {
  background: #ffffff;
  border-radius: 16px;
  padding: 2rem;
  border: 2px solid var(--border-color);
  box-shadow: 0 6px 18px var(--shadow-color);
}

.product-title {
  font-family: var(--main-font);
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--primary-color);
  line-height: 1.2;
}

.product-subtitle {
  font-size: 1.125rem;
  margin-bottom: 1.25rem;
  color: var(--secondary-color);
  font-weight: 500;
}

.product-text {
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.price-tag {
  font-family: var(--main-font);
  font-size: 2rem;
  font-weight: 700;
  color: var(--highlight-color);
  margin: 1.25rem 0;
  padding: 1rem;
  background: linear-gradient(135deg, var(--light-color) 0%, #ffffff 100%);
  border-radius: 12px;
  text-align: center;
  border: 2px dashed var(--border-color);
}

.urgent-banner {
  background: linear-gradient(135deg, var(--highlight-color) 0%, #E67E22 100%);
  color: #ffffff;
  border-radius: 16px;
  padding: 1.75rem;
  text-align: center;
  box-shadow: 0 6px 20px rgba(243, 156, 18, 0.3);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.urgent-text {
  font-family: var(--main-font);
  font-size: 1.375rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.features-list {
  background: #ffffff;
  border-radius: 16px;
  padding: 2rem;
  border: 2px solid var(--border-color);
  box-shadow: 0 6px 18px var(--shadow-color);
}

.features-title {
  font-family: var(--main-font);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  text-align: center;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--divider-color);
}

.feature-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.feature-icon-wrapper {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(41, 128, 185, 0.25);
}

.feature-icon {
  width: 28px;
  height: 28px;
}

.feature-text {
  flex: 1;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text-color);
}

.testimonials-section {
  background: linear-gradient(135deg, var(--dark-color) 0%, var(--secondary-color) 100%);
  padding: 3.5rem 1rem;
  margin-top: 2rem;
  position: relative;
  z-index: 1;
}

.testimonials-container {
  max-width: 1100px;
  margin: 0 auto;
}

.testimonials-heading {
  font-family: var(--main-font);
  font-size: 2.25rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 2.5rem;
  color: #ffffff;
  letter-spacing: 0.5px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.testimonial-card {
  background: rgba(255, 255, 255, 0.98);
  border-radius: 16px;
  padding: 1.75rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  border: 2px solid rgba(93, 173, 226, 0.3);
  transition: transform 0.3s ease;
}

.testimonial-card:hover {
  transform: translateY(-4px);
}

.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;
  flex-shrink: 0;
}

.avatar-icon {
  width: 32px;
  height: 32px;
}

.testimonial-info {
  flex: 1;
}

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

.testimonial-location {
  font-size: 0.9375rem;
  color: var(--secondary-color);
}

.testimonial-text {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-color);
  font-style: italic;
}

.rating-stars {
  margin-top: 0.875rem;
  display: flex;
  gap: 0.25rem;
}

.star-icon {
  width: 20px;
  height: 20px;
  fill: var(--highlight-color);
}

footer {
  background: linear-gradient(135deg, var(--dark-color) 0%, #0A1F2E 100%);
  color: rgba(255, 255, 255, 0.85);
  padding: 2.5rem 2rem 1.5rem;
  margin-top: auto;
}

.footer-content {
  max-width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-logo-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo-icon {
  width: 40px;
  height: 40px;
}

.footer-logo-text {
  font-family: var(--main-font);
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
}

.footer-nav {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-link {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-link:focus {
  outline: 2px solid var(--highlight-color);
  outline-offset: 2px;
}

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-bottom a:hover {
  color: #ffffff;
  text-decoration: underline;
}

@media (max-width: 968px) {
  .product-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .header-bg-decoration {
    display: none;
  }

  .product-title {
    font-size: 1.875rem;
  }

  .testimonials-heading {
    font-size: 1.875rem;
  }
}

@media (max-width: 768px) {
  header {
    padding: 1.25rem 1.5rem;
  }

  .logo-text {
    font-size: 1.5rem;
  }

  .logo-icon {
    width: 40px;
    height: 40px;
  }

  main {
    padding: 2rem 1rem;
  }

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

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

  .guarantee-block {
    padding: 1.5rem;
  }

  .product-description,
  .features-list {
    padding: 1.5rem;
  }

  .product-title {
    font-size: 1.625rem;
  }

  .cta-button {
    font-size: 1.125rem;
    padding: 1rem 2rem;
  }

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .footer-nav {
    flex-direction: column;
    gap: 0.875rem;
  }

  .testimonials-section {
    padding: 2.5rem 1rem;
  }

  .urgent-text {
    font-size: 1.125rem;
  }
}