:root{--ink:#000;--muted:#6a6a6a;--bg:#fff;--border:#e6e6e6;--bar:#f7f7f7;--foot:#111}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{max-width:900px;margin:0 auto;padding:0 12px}
.appbar{position:sticky;top:0;background:var(--bar);border-bottom:1px solid var(--border);height:52px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;z-index:10}
.brand{font-weight:900}
.nav a{margin-left:10px;padding:8px 10px;border:1px solid var(--border);border-radius:10px;background:#fff}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.card{background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.card .media{aspect-ratio:1/1;background:#eee}
.card .media img{width:100%;height:100%;object-fit:cover}
.card .meta{padding:10px}
.card .name{font-weight:800;margin:0 0 6px}
.card .price{margin:0}
.filterbar{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.filterbar input[type="search"]{flex:1;min-width:180px;padding:10px;border-radius:10px;border:1px solid var(--border)}
.filterbar select{padding:10px;border-radius:10px;border:1px solid var(--border);background:#fff}
.product{display:flex;flex-direction:column;gap:12px;margin:14px 0}
.product .media{aspect-ratio:1/1;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.product .media img{width:100%;height:100%;object-fit:cover}
h1{font-size:22px;margin:8px 0}
.price{font-weight:900;margin:6px 0 12px}
.options{display:flex;gap:8px;flex-wrap:wrap}
.size{padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fff;cursor:pointer}
.size.active{border-color:#000;font-weight:800}
.cta{padding:12px 14px;border:1px solid #000;border-radius:12px;background:#000;color:#fff;font-weight:800}
.notice{color:var(--muted);font-size:12px}
.footer{background:var(--foot);color:#fff;margin-top:24px;padding:24px 12px;text-align:center}