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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
  color: #111;
  background-color: #fafafa;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(250, 250, 250, 0.96);
  border-bottom: 1px solid #e5e5e5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 2px solid #111;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: #666;
}

.nav {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}

.nav a {
  padding: 0.3rem 0.5rem;
  border-radius: 999px;
}

.nav a:hover {
  background-color: #111;
  color: #fafafa;
}

.hero {
  max-width: 960px;
  margin: 3rem auto 2rem auto;
  padding: 0 1.5rem;
}

.hero-text h1 {
  font-size: clamp(2.2rem, 3vw + 1rem, 3rem);
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
}

.hero-text p {
  max-width: 540px;
  font-size: 1rem;
  color: #333;
}

.hero-actions {
  margin: 1.5rem 0 0.75rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  border: 1px solid #111;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
}

.btn.primary {
  background-color: #111;
  color: #fafafa;
}

.btn.primary:hover {
  opacity: 0.9;
}

.btn.ghost {
  background-color: transparent;
  color: #111;
}

.btn.ghost:hover {
  background-color: #eee;
}

.trust-text {
  font-size: 0.8rem;
  color: #555;
}

.section-header {
  max-width: 960px;
  margin: 2.5rem auto 1.5rem auto;
  padding: 0 1.5rem;
}

.section-header h2 {
  font-size: 1.5rem;
  margin-bottom: 0.35rem;
}

.section-header p {
  font-size: 0.95rem;
  color: #444;
}

.products-section {
  padding-bottom: 3rem;
}

.product-grid {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem 2.5rem 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
}

.product-card {
  background-color: #fff;
  border-radius: 1rem;
  border: 1px solid #e5e5e5;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  box-shadow: 0 14px 30px rgba(0,0,0,0.03);
}

.product-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #777;
}

.product-title {
  font-weight: 600;
  font-size: 1rem;
}

.product-meta {
  font-size: 0.8rem;
  color: #666;
}

.product-price {
  margin-top: 0.35rem;
  font-weight: 600;
}

.product-actions {
  margin-top: 0.75rem;
  display: flex;
  gap: 0.5rem;
}

.product-actions .btn {
  width: 100%;
  font-size: 0.85rem;
}

.product-actions .btn.secondary {
  border-style: dashed;
}

.how-section {
  padding-bottom: 2.5rem;
}

.steps {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.5rem;
  list-style: decimal;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.95rem;
}

.faq-section {
  padding-bottom: 3rem;
}

.faq-item {
  max-width: 760px;
  margin: 0 auto 1rem auto;
  padding: 0 1.5rem;
}

.faq-item h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.faq-item p {
  font-size: 0.9rem;
  color: #444;
}

.site-footer {
  border-top: 1px solid #e5e5e5;
  padding: 1rem 1.5rem 2rem 1.5rem;
  font-size: 0.8rem;
  color: #777;
  text-align: center;
  margin-top: 1rem;
}

@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  .nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
}