:root {
  --color-primary: #2457c5;
  --color-primary-dark: #173b88;
  --color-accent: #ffd166;
  --color-text: #172033;
  --color-muted: #5c667a;
  --color-surface: #ffffff;
  --color-background: #f4f7fb;
  --color-border: #dce3ef;
  --font-body: "Segoe UI", Arial, sans-serif;
  --max-width: 1120px;
  --radius: 16px;
  --shadow: 0 12px 32px rgb(23 32 51 / 10%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-background);
  font-family: var(--font-body);
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem max(1.25rem, calc((100% - var(--max-width)) / 2));
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.brand {
  color: var(--color-primary-dark);
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
}

.nav-list {
  display: flex;
  gap: 1.25rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav-list a {
  font-weight: 600;
  text-decoration: none;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--color-primary);
}

.promo-bar {
  padding: 0.65rem 1.25rem;
  color: var(--color-primary-dark);
  text-align: center;
  background: var(--color-accent);
}

.promo-bar p {
  margin: 0;
  font-weight: 700;
}

.promo-bar a {
  margin-left: 0.35rem;
  text-underline-offset: 0.2em;
}

.hero {
  max-width: var(--max-width);
  padding: 5rem 2rem;
  margin: 2rem auto;
  color: var(--color-surface);
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero h1 {
  max-width: 720px;
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3.75rem);
  line-height: 1.1;
}

.hero p:not(.eyebrow) {
  max-width: 600px;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.button {
  display: inline-block;
  padding: 0.75rem 1.1rem;
  margin-top: 0.5rem;
  color: var(--color-primary-dark);
  background: var(--color-accent);
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
}

.section {
  max-width: var(--max-width);
  padding: 3rem 2rem;
  margin: 0 auto;
}

.section-heading h2 {
  margin-top: 0;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.product-card {
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.product-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.product-card__body {
  padding: 1.25rem;
}

.product-card__category {
  margin: 0;
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-card h3 {
  margin: 0.35rem 0;
}

.product-card__price {
  color: var(--color-primary-dark);
  font-size: 1.3rem;
  font-weight: 800;
}

.product-card__action {
  display: inline-block;
  padding: 0.65rem 1rem;
  color: var(--color-surface);
  background: var(--color-primary);
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.product-card__action:hover,
.product-card__action:focus-visible {
  background: var(--color-primary-dark);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.category-card {
  display: flex;
  min-height: 180px;
  align-items: flex-start;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease;
}

.category-card:hover,
.category-card:focus-visible {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.category-card__icon {
  color: var(--color-primary);
  font-size: 2rem;
}

.category-card strong {
  font-size: 1.1rem;
}

.category-card span:last-child {
  color: var(--color-muted);
}

.benefits {
  padding-top: 1rem;
  padding-bottom: 5rem;
}

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

.benefit-grid article {
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.benefit-grid article > span {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  color: var(--color-primary-dark);
  background: var(--color-accent);
  border-radius: 50%;
  font-size: 1.25rem;
  font-weight: 800;
}

.benefit-grid h3 {
  margin-bottom: 0.35rem;
}

.benefit-grid p {
  margin: 0;
  color: var(--color-muted);
}

.muted {
  margin-bottom: 3rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.site-footer {
  padding: 3rem max(1.25rem, calc((100% - var(--max-width)) / 2));
  color: var(--color-surface);
  background: var(--color-text);
}

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

.footer-grid p {
  max-width: 420px;
  color: var(--color-border);
}

.footer-brand {
  color: var(--color-accent);
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
}

.site-footer h2 {
  margin-top: 0;
  font-size: 1rem;
}

.site-footer ul {
  display: grid;
  gap: 0.5rem;
  padding: 0;
  list-style: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--color-accent);
}

.footer-legal {
  padding-top: 1.5rem;
  margin: 2rem 0 0;
  text-align: center;
  border-top: 1px solid var(--color-muted);
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-list {
    flex-wrap: wrap;
  }

  .hero {
    margin: 1rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .benefit-grid {
    grid-template-columns: 1fr;
  }
}