:root {
  --primary-color: #5D6D7E;
  --secondary-color: #6E7F8F;
  --accent-color: #85A1B5;
  --light-color: #ECF0F1;
  --dark-color: #34495E;
  --gradient-primary: linear-gradient(135deg, #5D6D7E 0%, #85A1B5 100%);
  --hover-color: #4A5A6A;
  --background-color: #FAFBFC;
  --text-color: #414B52;
  --border-color: rgba(133, 161, 181, 0.18);
  --divider-color: rgba(93, 109, 126, 0.1);
  --shadow-color: rgba(93, 109, 126, 0.08);
  --highlight-color: #F2D4C9;
  --main-font: 'Montserrat', sans-serif;
  --alt-font: 'Open Sans', sans-serif;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

body {
  font-family: var(--alt-font);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--text-color);
  background-color: var(--background-color);
}

.pattern-bg {
  background-image: 
    linear-gradient(30deg, rgba(93, 109, 126, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(93, 109, 126, 0.03) 87.5%, rgba(93, 109, 126, 0.03)),
    linear-gradient(150deg, rgba(93, 109, 126, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(93, 109, 126, 0.03) 87.5%, rgba(93, 109, 126, 0.03)),
    linear-gradient(30deg, rgba(93, 109, 126, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(93, 109, 126, 0.03) 87.5%, rgba(93, 109, 126, 0.03)),
    linear-gradient(150deg, rgba(93, 109, 126, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(93, 109, 126, 0.03) 87.5%, rgba(93, 109, 126, 0.03));
  background-size: 80px 140px;
  background-position: 0 0, 0 0, 40px 70px, 40px 70px;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

header {
  background: white;
  padding: 1.2rem 0;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 4px var(--shadow-color);
  border-bottom: 1px solid var(--border-color);
}

.header-decoration {
  position: absolute;
  top: 50%;
  right: 8%;
  width: 55px;
  height: 55px;
  border: 3px solid var(--light-color);
  border-radius: 50%;
  transform: translateY(-50%);
  display: none;
}

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

.container {
  max-width: 1250px;
  margin: 0 auto;
  width: 100%;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--primary-color);
  font-family: var(--main-font);
  font-size: 1.65rem;
  font-weight: 600;
  text-decoration: none;
  width: fit-content;
  text-transform: uppercase;
  letter-spacing: 1.1px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 2.2rem 0;
  justify-content: center;
}

.product-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.2rem;
  align-items: flex-start;
}

@media (min-width: 768px) {
  .product-section {
    grid-template-columns: 1fr 1fr;
  }
}

.product-left {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

.product-image-container {
  position: relative;
  display: flex;
  justify-content: center;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 14px var(--shadow-color);
  border: 1px solid var(--border-color);
  padding: 1.2rem;
}

.product-image {
  width: 100%;
  height: auto;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.product-image:hover {
  transform: scale(1.02);
}

.guarantee-block {
  background: var(--light-color);
  color: var(--text-color);
  padding: 1.6rem;
  border-radius: 8px;
  border: 2px solid var(--primary-color);
}

.guarantee-block h3 {
  font-family: var(--main-font);
  color: var(--primary-color);
  margin-bottom: 0.7rem;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.guarantee-block p {
  font-size: 0.87rem;
  line-height: 1.5;
}

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

@media (min-width: 768px) {
  .features-icons {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 1.1rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px var(--shadow-color);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
  text-align: center;
}

.feature-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

.feature-item .feature-icon {
  width: 42px;
  height: 42px;
  background: var(--primary-color);
  color: white;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.feature-item span {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-color);
  font-family: var(--main-font);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.cart-button {
  background: var(--gradient-primary);
  color: white;
  padding: 1.05rem 2.1rem;
  border: none;
  border-radius: 8px;
  font-size: 1.02rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  text-align: center;
  box-shadow: 0 4px 12px var(--shadow-color);
  font-family: var(--main-font);
  text-transform: uppercase;
  letter-spacing: 0.7px;
}

.cart-button:hover {
  background: linear-gradient(135deg, var(--hover-color) 0%, var(--accent-color) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px var(--shadow-color);
}

.product-right h1 {
  font-family: var(--main-font);
  font-size: 2.4rem;
  color: var(--primary-color);
  margin-bottom: 0.9rem;
  font-weight: 600;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 1.3px;
}

.price {
  font-size: 2.05rem;
  font-weight: 600;
  color: var(--accent-color);
  margin: 0.9rem 0;
  font-family: var(--main-font);
}

.product-description {
  font-size: 0.91rem;
  margin-bottom: 1.6rem;
  line-height: 1.65;
  color: var(--text-color);
}

.product-description p {
  margin-bottom: 0.9rem;
}

.highlight-text {
  background: var(--primary-color);
  color: white;
  padding: 1.3rem;
  border-radius: 8px;
  font-weight: 600;
  margin: 1.6rem 0;
  text-align: center;
  font-size: 1.02rem;
  box-shadow: 0 4px 12px var(--shadow-color);
  font-family: var(--main-font);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.features-list {
  list-style: none;
  margin: 1.6rem 0;
}

.features-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  margin-bottom: 0.95rem;
  padding: 0.95rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px var(--shadow-color);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
  font-size: 0.89rem;
}

.features-list li:hover {
  transform: translateX(3px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

.feature-check {
  width: 23px;
  height: 23px;
  background: var(--primary-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  flex-shrink: 0;
  font-size: 0.82rem;
}

.benefits-section {
  background: var(--primary-color);
  padding: 2.8rem 1.5rem;
  color: white;
}

.benefits-content {
  max-width: 1250px;
  margin: 0 auto;
}

.benefits-section h2 {
  font-family: var(--main-font);
  font-size: 1.85rem;
  font-weight: 600;
  margin-bottom: 2.1rem;
  text-align: center;
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.9px;
}

.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
}

@media (min-width: 768px) {
  .benefits-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.benefit-card {
  background: rgba(255, 255, 255, 0.95);
  color: var(--text-color);
  padding: 1.6rem 1.3rem;
  border-radius: 8px;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.benefit-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 16px rgba(0, 0, 0, 0.15);
  background: white;
}

.benefit-card-icon {
  width: 56px;
  height: 56px;
  background: var(--light-color);
  border: 2px solid var(--primary-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.55rem;
  margin: 0 auto 0.95rem;
}

.benefit-card h3 {
  font-family: var(--main-font);
  font-size: 1.02rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.benefit-card p {
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--text-color);
}

.testimonials {
  background: var(--light-color);
  color: var(--text-color);
  padding: 2.8rem 1.5rem;
}

.testimonials h2 {
  font-family: var(--main-font);
  text-align: center;
  margin-bottom: 2.1rem;
  font-size: 1.85rem;
  font-weight: 600;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 1.1px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
  max-width: 1250px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.testimonial {
  background: white;
  padding: 1.6rem;
  border-radius: 8px;
  border-top: 3px solid var(--primary-color);
  box-shadow: 0 3px 10px var(--shadow-color);
  transition: transform 0.3s ease;
}

.testimonial:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 14px var(--shadow-color);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 0.95rem;
  margin-bottom: 0.95rem;
}

.testimonial-header > div {
  min-width: 0;
}

.testimonial-icon {
  width: 44px;
  height: 44px;
  background: var(--light-color);
  border: 2px solid var(--primary-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.testimonial-name {
  font-weight: 600;
  font-size: 1.02rem;
  font-family: var(--main-font);
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 0.35px;
  word-break: break-word;
}

.testimonial p {
  line-height: 1.6;
  font-size: 0.86rem;
  color: var(--text-color);
}

footer {
  background: var(--dark-color);
  color: white;
  padding: 2.1rem 1.5rem;
}

.footer-content {
  max-width: 1250px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  align-items: center;
  padding-bottom: 1.6rem;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-nav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  justify-content: center;
}

@media (min-width: 768px) {
  .footer-nav {
    justify-content: flex-end;
  }
}

.footer-content .logo {
  color: white;
}

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

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

.footer-credit {
  text-align: center;
  padding-top: 1.6rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.8rem;
  max-width: 1250px;
  margin: 0 auto;
}

.footer-credit a {
  color: var(--light-color);
  text-decoration: none;
}