:root {
  --primary-color: #2D5C7F;
  --secondary-color: #3A7CA5;
  --accent-color: #86B3D1;
  --light-color: #EDF4F9;
  --dark-color: #1D2A3C;
  --gradient-primary: linear-gradient(135deg, #2D5C7F 0%, #3A7CA5 100%);
  --hover-color: #245070;
  --background-color: #F5F8FB;
  --text-color: #3A4A58;
  --border-color: rgba(45, 92, 127, 0.14);
  --divider-color: rgba(58, 124, 165, 0.1);
  --shadow-color: rgba(45, 92, 127, 0.08);
  --highlight-color: #D4EAF7;
  --highlight-accent: #B3D0D9;
  --main-font: 'Oswald', 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: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--text-color);
  background-color: var(--background-color);
}

/* Pattern BG — subtle hexagon-like dots */
.pattern-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-color: var(--background-color);
  background-image:
    radial-gradient(circle at 15% 25%, rgba(45, 92, 127, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(58, 124, 165, 0.05) 0%, transparent 45%),
    radial-gradient(circle 1px at 0px 0px, rgba(45, 92, 127, 0.12) 0%, transparent 100%);
  background-size: auto, auto, 28px 28px;
}

/* Header */
header {
  background: var(--gradient-primary);
  padding: 1.2rem 0;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 8px var(--shadow-color);
}

.header-deco {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.14);
  display: none;
}

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

.header-deco-1 {
  width: 70px; height: 70px;
  top: -22px; right: 9%;
}

.header-deco-2 {
  width: 36px; height: 36px;
  bottom: -12px; right: 17%;
}

.header-deco-3 {
  width: 20px; height: 20px;
  top: 8px; right: 6%;
  border-style: dashed;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  width: 100%;
  padding: 0 1rem;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: white;
  font-family: var(--main-font);
  font-size: 1.35rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 1.5px;
}

.logo-icon {
  width: 34px;
  height: 34px;
  background: rgba(255,255,255,0.16);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* Main */
main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 1.8rem 0;
  justify-content: center;
}

.product-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.8rem;
  align-items: flex-start;
}

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

/* Left */
.product-left {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.product-image-container {
  background: white;
  border-radius: 10px;
  box-shadow: 0 3px 14px var(--shadow-color);
  overflow: hidden;
  display: flex;
  justify-content: center;
  border: 1px solid var(--border-color);
}

.product-image-container picture {
  display: flex;
  justify-content: center;
  width: 100%;
}

.product-image {
  width: 100%;
  height: auto;
  padding: 16px;
  transition: transform 0.3s ease;
  display: block;
}

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

/* Guarantee */
.guarantee-block {
  background: var(--gradient-primary);
  color: white;
  padding: 1.1rem 1.3rem;
  border-radius: 10px;
  box-shadow: 0 3px 10px var(--shadow-color);
  position: relative;
  overflow: hidden;
}

.guarantee-block::before {
  content: '✓';
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
  opacity: 0.08;
  font-weight: bold;
}

.guarantee-block h3 {
  font-family: var(--main-font);
  color: white;
  margin-bottom: 0.45rem;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.guarantee-block p {
  font-size: 0.84rem;
  line-height: 1.55;
  opacity: 0.92;
}

/* Features icons */
.features-icons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0.9rem 0.6rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 8px var(--shadow-color);
  border: 1px solid var(--border-color);
  transition: all 0.25s ease;
}

.feature-item:hover {
  transform: translateY(-2px);
  border-color: var(--primary-color);
}

.feature-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.feature-item span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-color);
  font-family: var(--main-font);
  letter-spacing: 0.3px;
  line-height: 1.3;
}

/* Cart button */
.cart-button {
  background: var(--gradient-primary);
  color: white;
  padding: 0.9rem 1.8rem;
  border-radius: 8px;
  font-size: 0.97rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: block;
  text-align: center;
  box-shadow: 0 3px 10px var(--shadow-color);
  font-family: var(--main-font);
  letter-spacing: 1px;
}

.cart-button:hover {
  background: linear-gradient(135deg, var(--hover-color) 0%, var(--secondary-color) 100%);
  transform: translateY(-1px);
  box-shadow: 0 5px 14px rgba(45, 92, 127, 0.2);
}

/* Right */
.product-right h1 {
  font-family: var(--main-font);
  font-size: 1.9rem;
  color: var(--primary-color);
  margin-bottom: 0.4rem;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1.2;
}

.price {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--secondary-color);
  margin: 0.7rem 0;
  font-family: var(--main-font);
}

.product-description {
  font-size: 0.9rem;
  margin-bottom: 1.1rem;
  line-height: 1.68;
  color: var(--text-color);
}

.product-description p + p {
  margin-top: 0.7rem;
}

.highlight-text {
  background: var(--highlight-color);
  color: #1D3045;
  padding: 0.9rem 1.1rem;
  border-radius: 8px;
  font-weight: 700;
  margin: 1.1rem 0;
  text-align: center;
  font-size: 0.93rem;
  font-family: var(--main-font);
  letter-spacing: 0.3px;
  border-left: 4px solid var(--primary-color);
  box-shadow: 0 2px 8px rgba(45, 92, 127, 0.1);
}

.features-list {
  list-style: none;
  margin: 0.8rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.features-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.75rem 0.9rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 6px var(--shadow-color);
  border-left: 3px solid var(--primary-color);
  font-size: 0.87rem;
  transition: all 0.22s ease;
}

.features-list li:hover {
  transform: translateX(3px);
}

.feature-check {
  width: 20px;
  height: 20px;
  min-width: 20px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 0.75rem;
}

/* Wide random promo block */
.promo-block {
  padding: 2.2rem 1.5rem;
  background: var(--light-color);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.promo-inner {
  max-width: 1080px;
  margin: 0 auto;
}

.promo-inner h2 {
  font-family: var(--main-font);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 1.5rem;
  letter-spacing: 0.5px;
}

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

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

.promo-card {
  background: white;
  border-radius: 10px;
  padding: 1.1rem 0.9rem;
  text-align: center;
  box-shadow: 0 2px 8px var(--shadow-color);
  border: 1px solid var(--border-color);
  transition: transform 0.25s ease;
}

.promo-card:hover {
  transform: translateY(-2px);
}

.promo-card-icon {
  font-size: 1.8rem;
  margin-bottom: 0.65rem;
  display: block;
}

.promo-card h3 {
  font-family: var(--main-font);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 0.4rem;
  letter-spacing: 0.3px;
}

.promo-card p {
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-color);
}

/* Testimonials */
.testimonials {
  background: var(--dark-color);
  color: white;
  padding: 2.2rem 1.5rem;
}

.testimonials h2 {
  font-family: var(--main-font);
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  max-width: 1080px;
  margin: 0 auto;
}

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

.testimonial {
  background: rgba(255,255,255,0.07);
  padding: 1.2rem;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.1);
  transition: transform 0.25s ease;
}

.testimonial:hover {
  transform: translateY(-2px);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.8rem;
}

.testimonial-icon {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.testimonial-name {
  font-weight: 700;
  font-size: 0.93rem;
  font-family: var(--main-font);
  letter-spacing: 0.3px;
}

.testimonial-city {
  font-size: 0.78rem;
  opacity: 0.68;
}

.testimonial p {
  line-height: 1.6;
  font-size: 0.86rem;
  opacity: 0.88;
}

/* Footer */
footer {
  background: var(--dark-color);
  border-top: 1px solid rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.8);
  padding: 1.6rem 1.5rem 0.9rem;
}

.footer-content {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.09);
}

@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: 0.9rem;
  justify-content: center;
  padding: 0;
}

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

.footer-nav a {
  color: rgba(255,255,255,0.72);
  text-decoration: none;
  transition: color 0.25s ease;
  font-size: 0.83rem;
}

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

.footer-credit {
  text-align: center;
  margin-top: 0.85rem;
  color: rgba(255,255,255,0.45);
  font-size: 0.8rem;
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
}

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