* { box-sizing: border-box; }
body { margin: 0; background: #fff; color: #333; font: 14px/1.45 Arial, Helvetica, sans-serif; }
a { color: #137333; }
a:hover { color: #0f5c2a; }
a:focus-visible { outline: 2px solid #0f5c2a; outline-offset: 2px; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin: 0; }
h1, h2 { font-size: 24px; line-height: 1.2; font-weight: normal; }
.container { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: absolute; top: -100px; left: 10px; z-index: 10; padding: 8px; background: #fff; }
.skip-link:focus { top: 10px; }
.service-bar { background: #f1f1f1; border-bottom: 1px solid #ddd; color: #666; font-size: 13px; }
.service-inner { min-height: 32px; display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.service-inner nav { display: flex; gap: 20px; }
.service-inner a { color: #555; text-decoration: none; }
.header { border-bottom: 3px solid #137333; }
.header-inner { min-height: 82px; display: flex; align-items: center; gap: 40px; }
.brand { display: flex; align-items: center; gap: 15px; color: #333; font-size: 20px; text-decoration: none; }
.brand img { width: 100px; max-height: 60px; object-fit: contain; }
.header-info { color: #666; }
.header-contact { margin-left: auto; white-space: nowrap; }
.layout { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 30px; padding-top: 25px; padding-bottom: 35px; }
.sidebar h2 { padding: 10px 12px; background: #ededed; border-bottom: 1px solid #d4d4d4; font-size: 16px; font-weight: bold; }
.sidebar h2:not(:first-child) { margin-top: 22px; }
.sidebar a { display: block; padding: 9px 12px; border-bottom: 1px solid #e5e5e5; color: #444; text-decoration: none; }
.sidebar a:hover { color: #176b3a; background: #f7f7f7; }
main { min-width: 0; }
.catalog-intro { padding: 4px 0 28px; border-bottom: 1px solid #ddd; }
.catalog-intro h1 { font-size: 28px; }
.catalog-intro p { margin-top: 10px; color: #666; font-size: 15px; }
.catalog-heading { margin-top: 30px; padding: 20px 0 10px; border-top: 1px solid #ddd; }
.catalog-heading h2 { font-size: 24px; }
main > section > p { margin-top: 10px; }
.notice { padding: 10px 12px; background: #f4f4f4; border-left: 3px solid #e47718; }
.category-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 15px; margin-top: 25px; padding-bottom: 8px; border-bottom: 2px solid #ddd; }
.category-heading h2 { font-size: 20px; }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.product { min-width: 0; min-height: 130px; display: flex; align-items: center; gap: 12px; padding: 12px 10px; border-bottom: 1px solid #e5e5e5; }
.product img { width: 95px; height: 95px; object-fit: contain; flex-shrink: 0; }
.product h3 { font-size: 14px; font-weight: normal; }
.product p { margin: 4px 0; color: #777; }
.product strong { font-size: 16px; white-space: nowrap; }
.info-section { margin-top: 30px; padding-top: 18px; border-top: 1px solid #ddd; }
.info-section.first-info { border-top: 0 !important; }
.info-section h2 { font-size: 20px; }
.separator { padding: 0 6px; color: #aaa; }
.footer { padding: 25px 0 15px; background: #eee; border-top: 1px solid #d5d5d5; color: #555; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1.2fr 1fr 1fr; gap: 25px; }
.footer-grid strong { display: block; margin-bottom: 8px; color: #333; }
.footer-grid a { display: block; margin-bottom: 5px; }
.footer-grid p { margin-top: 8px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 24px; padding-top: 12px; border-top: 1px solid #d5d5d5; font-size: 12px; }
@media (max-width: 1000px) {
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 650px) {
  .container { width: calc(100% - 24px); }
  .service-inner { flex-wrap: wrap; padding: 6px 0; gap: 4px 15px; }
  .service-inner nav { flex-wrap: wrap; gap: 5px 15px; }
  .header-inner { min-height: 0; flex-wrap: wrap; gap: 10px 20px; padding: 12px 0; }
  .brand { width: 100%; font-size: 18px; }
  .brand img { width: 80px; }
  .header-contact { margin-left: 0; }
  .layout { display: block; padding-top: 15px; }
  .sidebar { margin-bottom: 22px; }
  .sidebar nav { display: flex; flex-wrap: wrap; align-items: center; gap: 0; }
  .sidebar h2, .sidebar h2:not(:first-child) { width: 100%; margin: 0; padding: 7px 9px; }
  .sidebar h2:not(:first-child) { margin-top: 10px; }
  .sidebar a { padding: 8px 10px; }
  .product img { width: 65px; height: 65px; }
  .product { min-height: 100px; gap: 8px; padding: 10px 5px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}
@media (max-width: 380px) {
  .product-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}