:root {
  --color-primary: #080808;
  --color-on-primary: #ffffff;
  --color-ink: #080808;
  --color-body: #363636;
  --color-body-mid: #5a5a5a;
  --color-mute: #898989;
  --color-hairline: #d8d8d8;
  --color-canvas: #ffffff;
  --color-accent-purple: #7a3dff;
  --color-accent-pink: #ed52cb;
  --color-accent-blue: #3b89ff;
  --color-accent-orange: #ff6b00;
  --color-accent-green: #00d722;
  --rounded-sm: 4px;
  --rounded-md: 8px;
  --font: "WF Visual Sans Variable", Inter, system-ui, Segoe UI, PingFang SC, Microsoft YaHei, sans-serif;
  --shadow-card: 0 13px 13px rgba(0,0,0,0.08), 0 3px 7px rgba(0,0,0,0.09);
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: var(--font); color: var(--color-ink);
  background: var(--color-canvas); line-height: 1.5; letter-spacing: -0.16px;
}
a { color: var(--color-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

.header { padding: 16px 0; }
.header-inner { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.logo { color: var(--color-ink); font-weight: 600; font-size: 16px; }
.logo:hover { text-decoration: none; }
.search { flex: 1; min-width: 200px; display: flex; }
.search input {
  flex: 1; padding: 12px 16px; border: 1px solid var(--color-hairline);
  border-radius: 4px 0 0 4px; font: inherit;
}
.search button {
  padding: 12px 20px; border: 0; background: var(--color-primary); color: #fff;
  font: inherit; font-weight: 500; cursor: pointer; border-radius: 0 4px 4px 0;
}
.links { display: flex; gap: 14px; font-size: 13px; font-weight: 500; }
.links a { color: var(--color-ink); }

.nav { border-top: 1px solid var(--color-hairline); border-bottom: 1px solid var(--color-hairline); }
.nav-inner { display: flex; flex-wrap: wrap; gap: 4px 18px; padding: 10px 24px; }
.nav a { color: var(--color-ink); font-size: 14px; font-weight: 500; }
.nav a.on { font-weight: 600; }

.hero { padding: 24px 0; }
.ph {
  background: #f4f4f4; color: var(--color-mute);
  display: flex; align-items: center; justify-content: center; font-size: 13px;
  border-radius: 8px;
}
.banner { height: 200px; }

.section { padding: 28px 0; }
.section h2 { font-size: 24px; font-weight: 500; margin: 0 0 14px; }
.cats { display: flex; flex-wrap: wrap; gap: 8px; }
.cats a {
  padding: 8px 14px; color: #fff; font-size: 13px; font-weight: 500; border-radius: 8px;
}
.cats a:nth-child(5n+1) { background: var(--color-accent-purple); }
.cats a:nth-child(5n+2) { background: var(--color-accent-pink); }
.cats a:nth-child(5n+3) { background: var(--color-accent-blue); }
.cats a:nth-child(5n+4) { background: var(--color-accent-orange); }
.cats a:nth-child(5n+5) { background: var(--color-accent-green); color: var(--color-primary); }
.cats a:hover { text-decoration: none; }

.products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.item {
  border: 1px solid var(--color-hairline); padding: 16px; color: var(--color-ink);
  border-radius: 8px;
}
.item:hover { text-decoration: none; box-shadow: var(--shadow-card); border-color: transparent; }
.item .ph { height: 120px; margin-bottom: 8px; }
.item h3 { margin: 0 0 4px; font-size: 14px; font-weight: 500; }
.price { color: var(--color-ink); font-weight: 600; }
.sub { color: var(--color-mute); font-size: 12px; }

.layout { display: grid; grid-template-columns: 200px 1fr; gap: 24px; padding: 24px 0; }
.side a {
  display: block; padding: 10px 0; color: var(--color-ink);
  border-bottom: 1px solid var(--color-hairline); font-size: 14px; font-weight: 500;
}
.side a.on { font-weight: 600; }

.detail { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding: 24px 0; }
.detail .ph { height: 280px; }
.detail h1 { font-size: 32px; font-weight: 500; margin: 0 0 8px; }
.sku { color: var(--color-mute); font-size: 13px; }
.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-block; padding: 12px 20px; border: 0;
  background: var(--color-primary); color: #fff;
  font: inherit; font-weight: 500; cursor: pointer; margin-right: 8px; border-radius: 4px;
}
.btn:hover { text-decoration: none; color: #fff; }
.btn-line { background: #fff; color: var(--color-ink); border: 1px solid var(--color-hairline); }
.btn-line:hover { color: var(--color-ink); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { border-bottom: 1px solid var(--color-hairline); padding: 10px 8px; text-align: left; }
.qty { width: 48px; padding: 4px; border: 1px solid var(--color-hairline); border-radius: 4px; }
.user-list { list-style: none; margin: 0; padding: 0; }
.user-list li { border: 1px solid var(--color-hairline); padding: 12px; margin-bottom: 8px; border-radius: 8px; }

.footer { border-top: 1px solid var(--color-hairline); padding: 32px 0 48px; color: var(--color-body-mid); font-size: 13px; }
.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; }