:root {
  --primary-color: #2980B9;
  --secondary-color: #1A5A7D;
  --accent-color: #5DADE2;
  --light-color: #EBF5FB;
  --dark-color: #0E3C52;
  --gradient-primary: linear-gradient(135deg, #3498DB 0%, #2980B9 100%);
  --hover-color: #21618C;
  --background-color: #F8FCFF;
  --text-color: #2C3E50;
  --border-color: rgba(93, 173, 226, 0.25);
  --divider-color: rgba(26, 90, 125, 0.12);
  --shadow-color: rgba(26, 90, 125, 0.15);
  --highlight-color: #F39C12;
  --main-font: 'Oswald', sans-serif;
  --alt-font: 'Lato', 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;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.background-pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.03;
  pointer-events: none;
}

header {
  background: var(--gradient-primary);
  padding: 1rem 0;
  position: relative;
  overflow: hidden;
}

.header-decoration {
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: none;
}

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

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  position: relative;
  z-index: 1;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: white;
  font-family: var(--main-font);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

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

main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 2rem 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.product-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

@media (min-width: 992px) {
  .product-section {
    grid-template-columns: 400px 1fr;
    gap: 3rem;
  }
}

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

.product-image-wrapper {
  background: white;
  border: 2px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 4px 12px var(--shadow-color);
  text-align: center;
}

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

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

.guarantee-box {
  background: linear-gradient(135deg, var(--light-color) 0%, white 100%);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: 0 3px 10px var(--shadow-color);
}

.guarantee-box h3 {
  font-family: var(--main-font);
  font-size: 1.4rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.guarantee-icon {
  width: 28px;
  height: 28px;
  fill: var(--primary-color);
}

.guarantee-box p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-color);
}

.price-display {
  font-family: var(--main-font);
  font-size: 2.5rem;
  color: var(--primary-color);
  font-weight: 700;
  margin: 1rem 0;
  text-align: center;
}

.cta-button {
  display: inline-block;
  background: var(--gradient-primary);
  color: white;
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(41, 128, 185, 0.3);
  border: none;
  cursor: pointer;
  font-family: var(--alt-font);
}

.cta-button:hover {
  background: linear-gradient(135deg, #21618C 0%, #1A5A7D 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(41, 128, 185, 0.4);
}

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

.content-box {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 2px 8px var(--shadow-color);
}

.content-box h2 {
  font-family: var(--main-font);
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  line-height: 1.3;
}

.content-box p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-color);
  margin-bottom: 0.75rem;
}

.highlight-box {
  background: linear-gradient(135deg, var(--highlight-color) 0%, #E67E22 100%);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  box-shadow: 0 4px 15px rgba(243, 156, 18, 0.3);
}

.highlight-box p {
  font-family: var(--main-font);
  font-size: 1.5rem;
  color: white;
  font-weight: 600;
  line-height: 1.4;
  margin: 0;
}

.features-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0 0;
}

.features-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding: 1rem;
  background: var(--light-color);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.features-list li:hover {
  background: linear-gradient(135deg, var(--light-color) 0%, white 100%);
  transform: translateX(5px);
}

.feature-icon {
  width: 24px;
  height: 24px;
  fill: var(--primary-color);
  flex-shrink: 0;
  margin-top: 2px;
}

.feature-content h4 {
  font-family: var(--main-font);
  font-size: 1.125rem;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.feature-content p {
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

.testimonials-section {
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--dark-color) 100%);
  padding: 3rem 0;
  margin-top: 2rem;
}

.testimonials-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.testimonials-title {
  font-family: var(--main-font);
  font-size: 2.25rem;
  color: white;
  text-align: center;
  margin-bottom: 2.5rem;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.testimonial-card {
  background: white;
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

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

.testimonial-icon {
  width: 48px;
  height: 48px;
  background: var(--light-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.testimonial-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--primary-color);
}

.testimonial-author h4 {
  font-family: var(--main-font);
  font-size: 1.125rem;
  color: var(--secondary-color);
  margin-bottom: 0.25rem;
}

.testimonial-rating {
  color: var(--highlight-color);
  font-size: 0.9rem;
}

.testimonial-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-color);
  font-style: italic;
}

footer {
  background: var(--dark-color);
  color: white;
  padding: 2.5rem 0 1.5rem;
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: white;
  font-family: var(--main-font);
  font-size: 1.5rem;
  font-weight: 600;
}

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

.footer-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .footer-nav ul {
    flex-direction: row;
    gap: 2rem;
  }
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 1.5rem;
  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: white;
}