:root {
  --primary-color: #2D5C7F;
  --secondary-color: #1E4060;
  --accent-color: #4A7FA5;
  --light-color: #E8F2F9;
  --dark-color: #162B3A;
  --gradient-primary: linear-gradient(135deg, #2D5C7F 0%, #1E4060 100%);
  --hover-color: #3A6D92;
  --background-color: #F5F9FC;
  --text-color: #2C3E50;
  --border-color: rgba(45, 92, 127, 0.18);
  --divider-color: rgba(45, 92, 127, 0.12);
  --shadow-color: rgba(30, 64, 96, 0.10);
  --highlight-color: #D6EAF8;
  --highlight-accent: #F2C94C;
  --main-font: 'Montserrat', sans-serif;
  --alt-font: 'Lato', 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 background - geometric circles */
.pattern-bg {
  background-image:
    radial-gradient(circle at 10% 30%, rgba(45, 92, 127, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 90% 20%, rgba(74, 127, 165, 0.05) 0%, transparent 35%),
    radial-gradient(circle at 50% 80%, rgba(45, 92, 127, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 75% 60%, rgba(74, 127, 165, 0.03) 0%, transparent 30%);
  background-size: 700px 700px, 500px 500px, 600px 600px, 400px 400px;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: -1;
}

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

.header-deco-1 {
  position: absolute;
  top: -18px; right: 8%;
  width: 60px; height: 60px;
  border: 2px solid rgba(232, 242, 249, 0.15);
  border-radius: 50%;
  display: none;
}
.header-deco-2 {
  position: absolute;
  bottom: -10px; right: 14%;
  width: 36px; height: 36px;
  background: rgba(232, 242, 249, 0.08);
  border-radius: 50%;
  display: none;
}

@media (min-width: 768px) {
  .header-deco-1, .header-deco-2 { display: block; }
}

.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: 0.65rem;
  color: white;
  font-family: var(--main-font);
  font-size: 1.35rem;
  font-weight: 700;
  text-decoration: none;
  width: fit-content;
}

.logo-icon {
  width: 34px; height: 34px;
  background: var(--light-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

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

.product-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: flex-start;
}

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

.product-left {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.product-image-container {
  position: relative;
  display: flex;
  justify-content: center;
  border-radius: 12px;
  box-shadow: 0 4px 16px var(--shadow-color);
  padding: 18px 28px;
  background: white;
  border: 1px solid var(--border-color);
}

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

.product-image {
  width: 65%;
  height: auto;
  transition: transform 0.3s ease;
}

.product-image:hover { transform: scale(1.03); }

.guarantee-block {
  background: white;
  border-left: 4px solid var(--accent-color);
  padding: 1rem 1.1rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px var(--shadow-color);
}

.guarantee-block h3 {
  font-family: var(--main-font);
  color: var(--primary-color);
  margin-bottom: 0.45rem;
  font-size: 0.9rem;
  font-weight: 700;
}

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

.features-icons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0.9rem 0.6rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px var(--shadow-color);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.feature-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 14px var(--shadow-color);
  border-color: var(--accent-color);
}

.feature-item .feature-icon {
  width: 42px; height: 42px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.feature-item span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-color);
  font-family: var(--main-font);
}

.cart-button {
  background: var(--gradient-primary);
  color: white;
  padding: 0.85rem 2rem;
  border: none;
  border-radius: 8px;
  font-size: 0.97rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: block;
  text-align: center;
  box-shadow: 0 3px 12px var(--shadow-color);
  font-family: var(--main-font);
}

.cart-button:hover {
  background: linear-gradient(135deg, var(--hover-color) 0%, var(--accent-color) 100%);
  transform: translateY(-2px);
  box-shadow: 0 5px 16px var(--shadow-color);
}

.product-right h1 {
  font-family: var(--main-font);
  font-size: 1.9rem;
  color: var(--primary-color);
  margin-bottom: 0.7rem;
  font-weight: 700;
  line-height: 1.2;
}

.price {
  font-size: 1.7rem;
  font-weight: 700;
  color: white;
  margin: 0.7rem 0;
  font-family: var(--main-font);
  background: var(--gradient-primary);
  padding: 0.45rem 1rem;
  border-radius: 8px;
  display: inline-block;
}

.product-description {
  font-size: 0.88rem;
  margin-bottom: 1rem;
  line-height: 1.65;
  color: var(--text-color);
}

.product-description p { margin-bottom: 0.75rem; }

.highlight-text {
  background: var(--highlight-accent);
  color: #1a2a1a;
  padding: 0.9rem 1rem;
  border-radius: 8px;
  font-weight: 700;
  margin: 1rem 0;
  text-align: center;
  font-size: 0.92rem;
  font-family: var(--main-font);
  box-shadow: 0 2px 8px rgba(242, 201, 76, 0.25);
}

.features-list {
  list-style: none;
  margin: 1rem 0;
}

.features-list li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.6rem;
  padding: 0.65rem 0.8rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 6px var(--shadow-color);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
}

.features-list li:hover {
  transform: translateX(4px);
  box-shadow: 0 3px 10px var(--shadow-color);
  border-color: var(--accent-color);
}

.feature-check {
  width: 18px; height: 18px;
  background: var(--accent-color);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  flex-shrink: 0;
  font-size: 0.68rem;
}

/* Wide benefit block */
.promo-band {
  background: var(--light-color);
  border-top: 3px solid var(--accent-color);
  border-bottom: 3px solid var(--accent-color);
  padding: 2rem 1.5rem;
}

.promo-band h2 {
  font-family: var(--main-font);
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

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

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

.promo-card {
  background: white;
  border-radius: 10px;
  padding: 1.2rem;
  text-align: center;
  box-shadow: 0 2px 10px var(--shadow-color);
  border: 1px solid var(--border-color);
}

.promo-card .promo-icon {
  font-size: 2rem;
  margin-bottom: 0.6rem;
  display: block;
}

.promo-card h3 {
  font-family: var(--main-font);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.4rem;
}

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

/* Testimonials */
.testimonials {
  background: var(--dark-color);
  color: white;
  padding: 2.5rem 1.5rem;
}

.testimonials h2 {
  font-family: var(--main-font);
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.6rem;
  font-weight: 700;
  color: white;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
  max-width: 1080px;
  margin: 0 auto;
}

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

.testimonial {
  background: rgba(255,255,255,0.08);
  padding: 1.1rem;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.13);
  transition: all 0.3s ease;
}

.testimonial:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-2px);
}

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

.testimonial-icon {
  width: 38px; height: 38px;
  background: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.testimonial-name {
  font-weight: 700;
  font-size: 0.9rem;
  font-family: var(--main-font);
  color: var(--light-color);
}

.testimonial-city {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.65);
}

.testimonial p {
  line-height: 1.6;
  font-size: 0.84rem;
  color: rgba(255,255,255,0.88);
}

footer {
  background: var(--dark-color);
  border-top: 1px solid rgba(255,255,255,0.12);
  color: white;
  padding: 1.5rem 1.5rem;
}

.footer-content {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  padding-bottom: 1rem;
}

@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;
}

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

.footer-nav a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  transition: color 0.3s ease;
  font-size: 0.8rem;
}

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

.footer-credit {
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.5);
  font-size: 0.75rem;
  max-width: 1080px;
  margin: 0 auto;
}

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