:root {
  --color-bg: #fafaf9;
  --color-text: #2d3436;
  --color-primary: #5a4f6f;
  --color-accent-blue: #d4dce6;
  --color-border: #e8e8e8;
  --color-white: #ffffff;
}

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

html, body {
  height: 100%;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-text);
  line-height: 1.2;
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  color: var(--color-text);
  line-height: 1.2;
}

h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--color-text);
}

p {
  font-size: 1rem;
  margin-bottom: 1rem;
  line-height: 1.6;
  color: var(--color-text);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

header {
  background-color: var(--color-white);
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
}

.nav {
  display: none;
  gap: 2rem;
  align-items: center;
}

.nav a {
  font-size: 0.95rem;
  color: var(--color-text);
  transition: color 0.3s ease;
}

.nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background-color: transparent;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  cursor: pointer;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.btn:hover {
  transform: scale(1.02);
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-text);
  color: var(--color-white);
  text-decoration: none;
}

.menu-toggle {
  display: none;
  background-color: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
}

.hero {
  background-image: linear-gradient(rgba(45, 52, 54, 0.5), rgba(45, 52, 54, 0.5)), url('');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  padding: 6rem 1rem;
  color: var(--color-white);
  display: flex;
  align-items: center;
  min-height: 400px;
}

.hero-content {
  max-width: 600px;
  z-index: 2;
}

.hero h1 {
  color: var(--color-white);
  font-size: 2.8rem;
}

.hero p {
  font-size: 1.1rem;
  color: var(--color-white);
  margin-bottom: 2rem;
  opacity: 0.95;
}

.section {
  padding: 4rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section h2 {
  margin-bottom: 2rem;
}

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

.card {
  background-color: var(--color-white);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.card h3 {
  margin-bottom: 0.8rem;
}

.card p {
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.section-bg {
  background-color: var(--color-accent-blue);
  margin-left: -1rem;
  margin-right: -1rem;
  padding-left: 1rem;
  padding-right: 1rem;
}

.product-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.product-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background-color: var(--color-accent-blue);
}

.product-content {
  padding: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.product-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.product-desc {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 1rem;
  flex-grow: 1;
}

.product-price {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

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

.faq-item {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-q {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.faq-a {
  font-size: 0.95rem;
  line-height: 1.6;
}

footer {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: 2rem 1rem;
  margin-top: 3rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-section {
  margin-bottom: 1.5rem;
}

.footer-section h3 {
  margin-bottom: 0.8rem;
  font-size: 0.95rem;
}

.footer-section p {
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-white);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(90, 79, 111, 0.1);
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.checkbox-group input[type="checkbox"] {
  margin-top: 0.25rem;
  cursor: pointer;
}

.checkbox-group label {
  margin: 0;
  font-size: 0.9rem;
  cursor: pointer;
}

.thank-you-box {
  text-align: center;
  padding: 3rem 1rem;
}

.thank-you-box h1 {
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.thank-you-box p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.comparison-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background-color: var(--color-accent-blue);
  border-radius: 8px;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-group label {
  font-weight: 500;
  color: var(--color-text);
  margin: 0;
}

.filter-group select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  background-color: var(--color-white);
  color: var(--color-text);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 0.95rem;
  cursor: pointer;
}

.criteria-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

.criteria-card {
  background-color: var(--color-white);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.criteria-card h3 {
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.breadcrumb {
  padding: 1rem;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  max-width: 1200px;
  margin: 0 auto;
}

.breadcrumb a {
  color: var(--color-primary);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.intro-text {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
  font-size: 1.05rem;
  color: #555;
}

@media (min-width: 576px) {
  h1 {
    font-size: 2.8rem;
  }

  h2 {
    font-size: 2.2rem;
  }

  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-image {
    height: 220px;
  }

  .footer-section {
    display: inline-block;
    width: 48%;
    margin-bottom: 1rem;
  }

  .criteria-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .header-content {
    padding: 0 2rem;
  }

  .section {
    padding: 4rem 2rem;
  }

  .intro-text {
    padding: 2rem 2rem;
  }

  .nav {
    display: flex;
  }

  .menu-toggle {
    display: none;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.3rem;
  }

  .cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .product-image {
    height: 240px;
  }

  .faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .criteria-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .comparison-filters {
    justify-content: flex-start;
  }

  .hero {
    padding: 8rem 2rem;
  }

  footer {
    padding: 3rem 2rem;
  }
}

@media (min-width: 992px) {
  .header-content {
    padding: 0 3rem;
  }

  .section {
    padding: 5rem 3rem;
  }

  .intro-text {
    padding: 2rem 3rem;
  }

  h1 {
    font-size: 3.2rem;
  }

  .hero h1 {
    font-size: 3.2rem;
  }
}

@media (max-width: 767px) {
  .nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    gap: 0;
    border-top: 1px solid var(--color-border);
  }

  .nav.active {
    display: flex;
  }

  .nav a {
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    display: block;
  }

  .menu-toggle {
    display: block;
  }

  .hero {
    padding: 3rem 1rem;
    min-height: 300px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }
}