:root {
  --color-primary: #000000;
  --color-on-primary: #ffffff;
  --color-canvas-night: #000000;
  --color-canvas-light: #ffffff;
  --color-canvas-cool: #f0f0fa;
  --color-ink: #000000;
  --color-ink-mute: #5a5a5f;
  --color-hairline-on-light: #e0e0e8;
  --color-hairline-on-dark: #3a3a3f;
  --font-display: "D-DIN-Bold", "Arial Narrow", Arial, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "D-DIN", Arial, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --rounded-xs: 4px;
  --rounded-sm: 8px;
  --rounded-pill: 32px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-canvas-light);
  line-height: 1.5;
  letter-spacing: 0.32px;
}
a { color: var(--color-ink); text-decoration: underline; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

.header { background: #000; color: #fff; padding: 16px 0; }
.header-inner { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  color: #fff;
  font-size: 16px;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-decoration: none;
}
.search { flex: 1; min-width: 200px; display: flex; }
.search input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--color-hairline-on-light);
  font: inherit;
  border-radius: var(--rounded-xs) 0 0 var(--rounded-xs);
}
.search button {
  padding: 12px 18px;
  border: 1px solid #fff;
  background: transparent;
  color: #fff;
  font: inherit;
  font-weight: 700;
  letter-spacing: 1.17px;
  text-transform: uppercase;
  font-size: 12px;
  cursor: pointer;
}
.links { display: flex; gap: 14px; font-size: 12px; }
.links a { color: #fff; text-transform: uppercase; letter-spacing: 0.96px; }

.nav { background: #000; border-top: 1px solid var(--color-hairline-on-dark); }
.nav-inner { display: flex; flex-wrap: wrap; gap: 4px 18px; padding: 10px 24px; }
.nav a { color: #fff; font-size: 12px; letter-spacing: 0.96px; text-transform: uppercase; text-decoration: none; }
.nav a.on { text-decoration: underline; }

.hero { padding: 24px 0; background: #000; }
.ph {
  background: #e8e8ec;
  color: var(--color-ink-mute);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: var(--rounded-sm);
}
.banner { height: 200px; background: #1a1a1c; color: #6a6a70; border-radius: 0; }

.section { padding: 32px 0; }
.section h2 {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin: 0 0 16px;
}

.cats { display: flex; flex-wrap: wrap; gap: 8px; }
.cats a {
  border: 1px solid var(--color-ink);
  padding: 8px 16px;
  color: var(--color-ink);
  font-size: 12px;
  letter-spacing: 0.96px;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--rounded-pill);
}
.cats a:hover { background: var(--color-canvas-cool); }

.products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.item {
  background: #fff;
  border: 1px solid var(--color-hairline-on-light);
  border-radius: var(--rounded-sm);
  padding: 16px;
  color: var(--color-ink);
  text-decoration: none;
}
.item .ph { height: 120px; margin-bottom: 10px; }
.item h3 { margin: 0 0 4px; font-size: 14px; }
.price { font-weight: 700; }
.sub { color: var(--color-ink-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-on-light);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.96px;
  text-decoration: none;
}
.side a.on { font-weight: 700; }

.detail { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; padding: 32px 0; }
.detail .ph { height: 320px; }
.detail h1 {
  font-family: var(--font-display);
  font-size: 32px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin: 0 0 8px;
}
.sku { color: var(--color-ink-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-on-light); }

.btn {
  display: inline-block;
  padding: 18px 24px;
  border: 1px solid var(--color-ink);
  background: var(--color-canvas-cool);
  color: var(--color-ink);
  font: inherit;
  font-weight: 700;
  letter-spacing: 1.17px;
  text-transform: uppercase;
  font-size: 13px;
  cursor: pointer;
  margin-right: 8px;
  border-radius: var(--rounded-pill);
  text-decoration: none;
}
.btn-line { background: #fff; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { border-bottom: 1px solid var(--color-hairline-on-light); padding: 12px 8px; text-align: left; }
.qty { width: 48px; padding: 4px; }
.user-list { list-style: none; margin: 0; padding: 0; }
.user-list li { border: 1px solid var(--color-hairline-on-light); padding: 16px; margin-bottom: 8px; border-radius: var(--rounded-sm); }

.footer {
  background: #000;
  color: #fff;
  padding: 32px 0 40px;
  font-size: 13px;
}
.footer p { margin: 0 0 4px; }
.footer a { color: #fff; }

@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; }