* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Times New Roman", serif;
  background: #f2f2f2;
  color: #111;
}

.top-nav {
  background: #1e3a8a;
  padding: 12px 0;
  margin-bottom: 14px;
}

.nav-inner {
  width: 1120px;
  max-width: calc(100% - 30px);
  margin: 0 auto;
}

.nav-inner a {
  display: inline-block;
  color: #fff;
  text-decoration: none;
  margin-right: 14px;
  padding: 10px 14px;
  border-radius: 6px;
  font-family: Arial, sans-serif;
}

.nav-inner a:hover {
  background: rgba(255,255,255,0.15);
}

h1 {
  display: inline-block;
  margin: 20px 0 10px 38px;
  padding: 4px 8px;
  background: #96ef7b;
  font-size: 24px;
  font-weight: bold;
}

.subtitle {
  margin: 0 0 18px 38px;
  font-size: 22px;
}

.page {
  width: 100%;
}

.product-list {
  width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.product-card {
  background: #fff;
  border: 1px solid #dddddd;
  border-radius: 6px;
  padding: 12px;
  min-height: 330px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.thumb-box {
  position: relative;
  height: 165px;
  border: 1px solid #e7e7e7;
  border-radius: 4px;
  background: linear-gradient(to bottom, #fafafa, #f1f1f1);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.thumb-box img {
  max-width: 86%;
  max-height: 145px;
  display: block;
}

.badge {
  position: absolute;
  left: 8px;
  bottom: 8px;
  background: #d7a145;
  color: #fff;
  font-size: 11px;
  padding: 3px 7px;
  border-radius: 2px;
  font-family: Arial, sans-serif;
}

.sale-tag {
  position: absolute;
  left: 8px;
  top: 8px;
  background: #f2663a;
  color: #fff;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 12px;
  font-family: Arial, sans-serif;
  font-weight: bold;
}

.year-box {
  background: radial-gradient(circle at center, #2a2a2a, #111);
  color: #f7d469;
  flex-direction: column;
}

.year-text {
  font-size: 58px;
  line-height: 1;
  font-weight: bold;
  font-family: Arial, sans-serif;
}

.year-note {
  margin-top: 6px;
  font-size: 16px;
  color: #fff7be;
  font-style: italic;
}

h3 {
  margin: 12px 0 6px;
  font-size: 18px;
  line-height: 1.2;
  font-family: Arial, sans-serif;
}

.price {
  margin: 0 0 8px;
  color: #d33131;
  font-size: 14px;
  font-family: Arial, sans-serif;
}

.rating {
  margin: 0 0 8px;
  color: #f4c430;
  font-size: 14px;
  font-family: Arial, sans-serif;
}

.rating span {
  color: #c7ad3a;
}

.desc {
  margin: 0;
  color: #333;
  font-size: 14px;
  font-family: Arial, sans-serif;
}

.requirement {
  margin: 44px 0 0 38px;
}

h2 {
  margin: 0 0 12px;
  font-size: 26px;
}

ul {
  margin: 0 0 40px 18px;
  font-size: 20px;
  line-height: 1.9;
  list-style-type: square;
}

li {
  padding-left: 6px;
}

@media (max-width: 1160px) {
  .product-list {
    width: calc(100% - 30px);
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .product-list {
    grid-template-columns: 1fr;
  }

  .subtitle,
  h1,
  .requirement {
    margin-left: 15px;
  }
}