:root {
  --color-primary: #000000;
  --color-on-primary: #ffffff;
  --color-ink: #000000;
  --color-body: #737373;
  --color-mute: #a3a3a3;
  --color-canvas: #ffffff;
  --color-surface-soft: #fafafa;
  --color-hairline: #e5e5e5;
  --color-hairline-strong: #d4d4d4;
  --color-surface-dark: #171717;
  --rounded-lg: 12px;
  --rounded-full: 9999px;
  --font-display: "SF Pro Rounded", Nunito, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: ui-sans-serif, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-canvas);
  line-height: 1.5;
}
a { color: var(--color-ink); text-decoration: underline; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 24px; }

.header { padding: 12px 0; }
.header-inner { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.logo { font-family: var(--font-display); font-weight: 600; color: #000; font-size: 18px; text-decoration: none; }
.search { flex: 1; min-width: 200px; display: flex; background: var(--color-surface-soft); border-radius: 9999px; height: 36px; overflow: hidden; }
.search input { flex: 1; padding: 8px 16px; border: 0; background: transparent; font: inherit; outline: none; }
.search button {
  padding: 0 16px;
  border: 0;
  background: #000;
  color: #fff;
  font: 500 14px var(--font-body);
  cursor: pointer;
  border-radius: 9999px;
  margin: 2px;
}
.links { display: flex; gap: 12px; font-size: 13px; }
.links a { color: #000; text-decoration: none; font-weight: 500; }

.nav { }
.nav-inner { display: flex; flex-wrap: wrap; gap: 4px 16px; padding: 8px 24px; }
.nav a { color: #000; font-size: 14px; font-weight: 500; text-decoration: none; }
.nav a.on { text-decoration: underline; }

.hero { padding: 24px 0; }
.ph {
  background: var(--color-surface-soft);
  color: var(--color-mute);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  border-radius: 12px;
}
.banner { height: 180px; font-family: var(--font-display); font-size: 28px; font-weight: 500; color: #000; }

.section { padding: 32px 0; }
.section h2 { font-family: var(--font-display); font-size: 24px; font-weight: 600; margin: 0 0 16px; }

.cats { display: flex; flex-wrap: wrap; gap: 8px; }
.cats a {
  background: var(--color-surface-soft);
  padding: 6px 12px;
  color: #000;
  font-size: 13px;
  border-radius: 9999px;
  text-decoration: none;
}
.cats a:hover { background: #000; color: #fff; }

.products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.item {
  border: 1px solid var(--color-hairline);
  padding: 16px;
  color: #000;
  border-radius: 12px;
  text-decoration: none;
}
.item:hover { text-decoration: none; }
.item .ph { height: 120px; margin-bottom: 8px; }
.item h3 { margin: 0 0 4px; font-size: 14px; font-weight: 500; }
.price { color: #000; font-weight: 500; }
.sub { color: var(--color-body); font-size: 12px; }

.layout { display: grid; grid-template-columns: 180px 1fr; gap: 24px; padding: 24px 0; }
.side a {
  display: block;
  padding: 8px 0;
  color: #000;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
.side a.on { text-decoration: underline; }

.detail { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding: 24px 0; }
.detail .ph { height: 280px; }
.detail h1 { font-family: var(--font-display); font-size: 24px; font-weight: 600; margin: 0 0 8px; }
.sku { color: var(--color-body); font-size: 13px; margin-bottom: 12px; }
.spec { list-style: none; margin: 0 0 16px; padding: 0; font-size: 14px; }
.spec li { padding: 8px 0; border-bottom: 1px solid var(--color-hairline); }

.btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  height: 36px;
  border: 0;
  background: #000;
  color: #fff;
  font: 500 14px var(--font-body);
  cursor: pointer;
  margin-right: 8px;
  border-radius: 9999px;
  text-decoration: none;
}
.btn:hover { text-decoration: none; color: #fff; }
.btn-line {
  background: #fff;
  color: #000;
  border: 1px solid var(--color-hairline-strong);
}
.btn-line:hover { color: #000; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { border-bottom: 1px solid var(--color-hairline); padding: 12px 8px; text-align: left; }
.qty { width: 48px; padding: 6px; border: 1px solid var(--color-hairline); border-radius: 9999px; }

.user-list { list-style: none; margin: 0; padding: 0; }
.user-list li {
  border: 1px solid var(--color-hairline);
  padding: 16px;
  margin-bottom: 8px;
  border-radius: 12px;
}

.footer {
  border-top: 1px solid var(--color-hairline);
  padding: 32px 0 40px;
  color: var(--color-body);
  font-size: 12px;
  text-align: center;
}
.footer p { margin: 0 0 4px; }

@media (max-width: 800px) {
  .products { grid-template-columns: repeat(2, 1fr); }
  .layout, .detail { grid-template-columns: 1fr; }
}

.ph { overflow: hidden; }
.ph img { width: 100%; height: 100%; object-fit: cover; display: block; }