* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: Arial, Helvetica, sans-serif; line-height: 1.5; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.header-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; gap: 20px; }
.header-logo { display: flex; align-items: center; gap: 10px; font-weight: bold; font-size: 20px; }
.logo-badge { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 6px; font-size: 16px; }
.header-cart { font-size: 14px; font-weight: bold; }
.header-search { display: flex; }
.header-search input { padding: 8px; border: 1px solid #ccc; border-right: none; width: 180px; }
.header-search button { padding: 8px 14px; border: none; cursor: pointer; }

.header-nav { display: flex; justify-content: center; gap: 4px; flex-wrap: wrap; padding: 0 20px; }
.header-nav .nav-link { padding: 12px 18px; font-weight: bold; font-size: 13px; letter-spacing: 0.5px; }

.announce-bar { text-align: center; padding: 12px 20px; font-size: 14px; font-weight: bold; }

main { max-width: 1200px; margin: 0 auto; padding: 30px 20px; }

.hero-promo { text-align: center; margin-bottom: 40px; }
.hero-kicker { font-weight: bold; margin-bottom: 20px; font-size: 16px; }
.hero-banner { position: relative; max-width: 700px; margin: 0 auto; overflow: hidden; }
.hero-banner img { width: 100%; height: 320px; object-fit: cover; opacity: 0.85; }
.hero-banner-text { position: absolute; bottom: 0; left: 0; right: 0; padding: 16px; text-align: left; }
.hero-banner-title { display: inline-block; font-size: 22px; font-weight: bold; padding: 4px 10px; margin-bottom: 6px; }
.hero-banner-sub { display: block; font-size: 14px; }

.section-title { font-size: 22px; padding-bottom: 10px; margin-bottom: 20px; display: inline-block; }

.cat-grid-section, .bestseller-section, .buying-guide-section { margin-bottom: 40px; padding: 30px 0; }
.bestseller-section { padding: 30px 20px; margin-left: -20px; margin-right: -20px; }

.cat-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.cat-card { display: block; text-align: center; overflow: hidden; border-radius: 4px; }
.cat-card img { height: 90px; width: 100%; object-fit: cover; }
.cat-name { display: block; padding: 8px; font-size: 13px; font-weight: bold; }

.product-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.product-card { padding: 14px; text-align: center; border-radius: 4px; }
.product-card img { height: 140px; width: 100%; object-fit: cover; margin-bottom: 10px; border-radius: 3px; }
.product-name { display: block; font-size: 14px; font-weight: bold; margin-bottom: 6px; }
.product-price { display: block; font-size: 16px; font-weight: bold; }

.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.guide-card { padding: 20px; }
.guide-card h3 { font-size: 16px; margin-bottom: 10px; }
.guide-card p { font-size: 14px; }

.footer-inner { max-width: 1200px; margin: 0 auto; padding: 24px 20px; text-align: center; font-size: 13px; }
.footer-bottom { max-width: 900px; margin: 0 auto; padding: 24px; text-align: center; font-size: 13px; }

.page-title { font-size: 28px; color: #142c5c; padding: 20px 0 10px; }
.static-page { max-width: 1200px; margin: 0 auto; padding: 30px 20px; }
.static-content { max-width: 760px; }
.static-content h2 { font-size: 20px; color: #142c5c; margin: 24px 0 10px; }
.static-content p { margin-bottom: 16px; font-size: 15px; line-height: 1.7; }
.static-list { margin: 10px 0 16px 20px; }
.static-list li { margin-bottom: 8px; font-size: 15px; }

.blog-grid { max-width: 1200px; margin: 0 auto; padding: 20px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .blog-grid { grid-template-columns: 1fr; } }

@media (max-width: 900px) {
  .cat-grid { grid-template-columns: repeat(3, 1fr); }
  .product-row { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .header-inner { flex-direction: column; }
}