* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; background: #f4f5f7; color: #1d2330; }
a { color: inherit; text-decoration: none; }
.topbar { display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap; padding: 16px 24px; background: #1d2330; color: #fff; }
.logo { font-size: 22px; font-weight: 700; }
.search { display: flex; gap: 8px; }
.search input { padding: 8px 12px; border: 0; border-radius: 8px; min-width: 220px; }
.search button { padding: 8px 14px; border: 0; border-radius: 8px; background: #2f6fed; color: #fff; cursor: pointer; }
.container { max-width: 1100px; margin: 0 auto; padding: 24px; }
.brands { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.brands a { padding: 6px 14px; border-radius: 999px; background: #fff; border: 1px solid #dde1e8; }
.brands a.active { background: #2f6fed; color: #fff; border-color: #2f6fed; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.card { background: #fff; border-radius: 12px; padding: 16px; border: 1px solid #e4e7ec; transition: box-shadow .15s; }
.card:hover { box-shadow: 0 6px 20px rgba(0, 0, 0, .08); }
.card img, .noimg { width: 100%; height: 180px; object-fit: contain; border-radius: 8px; background: #f0f2f5; }
.noimg { display: grid; place-items: center; color: #8a93a3; }
.noimg.big { height: 360px; }
.card h3 { margin: 12px 0 4px; font-size: 17px; }
.meta { color: #6b7385; margin: 0 0 8px; }
.price { font-weight: 700; font-size: 18px; color: #2f6fed; margin: 0; }
.detail { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; background: #fff; padding: 24px; border-radius: 12px; }
.detail img { width: 100%; max-height: 420px; object-fit: contain; }
.specs { padding-left: 18px; line-height: 1.8; }
.pages { display: flex; gap: 16px; justify-content: center; margin-top: 24px; }
.footer { text-align: center; color: #8a93a3; padding: 32px; }
@media (max-width: 700px) { .detail { grid-template-columns: 1fr; } }