:root{--ink:#1d1d1f;--sub:#6e6e73;--line:#e6e6eb;--bg:#fff;--soft:#f5f5f7;--blue:#0071e3}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 -apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.shop-main{max-width:980px;margin:0 auto;padding:40px 22px 70px}.shop-main.wide{max-width:1120px}
.shop-foot{text-align:center;color:var(--sub);font-size:12px;padding:30px 22px 46px;border-top:1px solid var(--line)}
.hero{text-align:center;padding:26px 0 20px}
.hero h1{font-size:clamp(34px,5vw,52px);letter-spacing:-.03em;font-weight:600;margin:0 0 10px}
.hero-sub{color:var(--sub);font-size:18px;margin:0 0 26px}
.search{display:flex;gap:10px;max-width:760px;margin:0 auto;flex-wrap:wrap}
.search input[type=search]{flex:1;min-width:220px;padding:13px 16px;border:1px solid var(--line);border-radius:12px;background:var(--soft);font:inherit;color:var(--ink)}
.search select{padding:12px;border:1px solid var(--line);border-radius:12px;background:#fff;font:inherit}
.search button{padding:12px 20px;border:none;border-radius:12px;background:var(--blue);color:#fff;font-weight:500;cursor:pointer}
.search button:hover{filter:brightness(1.05)}
.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:20px auto 0;max-width:840px}
.chip{padding:7px 14px;border:1px solid var(--line);border-radius:999px;font-size:13.5px;color:var(--ink);background:#fff;transition:background .15s,border-color .15s}
.chip:hover{border-color:#c7c7cc}.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.chip-sep{width:1px;height:20px;background:var(--line);margin:0 4px;align-self:center}
.reset{align-self:center;color:var(--blue);font-size:13.5px;margin-left:6px}
.count{color:var(--sub);font-size:13px;margin:26px 0 12px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px 18px;display:flex;flex-direction:column;gap:4px;transition:transform .16s ease,box-shadow .16s ease}
.card:hover{transform:translateY(-3px);box-shadow:0 18px 40px -24px rgba(0,0,0,.35)}
.card-media{background:var(--soft);border-radius:12px;height:120px;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.pg{width:130px;height:auto}
.card-brand{font-weight:600;font-size:15px;letter-spacing:-.01em}
.card-model{color:var(--ink);font-size:13.5px}.card-meta{color:var(--sub);font-size:12.5px}
.card-price{margin-top:6px;font-weight:600;font-size:16px}
.empty{grid-column:1/-1;text-align:center;color:var(--sub);padding:50px}
.back{color:var(--blue);font-size:14px;display:inline-block;margin-bottom:18px}
.pd{display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:start}
.pd-media{background:var(--soft);border-radius:24px;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center}.pd-media .pg{width:70%}
.pd-brand{color:var(--sub);text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:600}
.pd-model{font-size:34px;letter-spacing:-.02em;font-weight:600;margin:6px 0 10px}
.pd-price{font-size:24px;font-weight:600;margin-bottom:22px}
.pd-spec{display:grid;grid-template-columns:auto 1fr;gap:8px 22px;margin:0 0 26px;font-size:14.5px}
.pd-spec dt{color:var(--sub)}.pd-spec dd{margin:0}
.pd-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.buy{background:var(--blue);color:#fff;padding:13px 26px;border-radius:980px;font-weight:500;border:none;cursor:pointer;font-size:15px;display:inline-block}
.buy:hover{filter:brightness(1.06)}
.pd-link{color:var(--blue);font-size:14.5px}.pd-note{color:var(--sub);font-size:13px;margin-top:18px}
.rel-h{font-size:22px;letter-spacing:-.01em;margin:56px 0 18px}
.rel-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px}
.rel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px}
.rel-media{background:var(--soft);border-radius:10px;height:78px;display:flex;align-items:center;justify-content:center;margin-bottom:8px}.rel-media .pg{width:100px}
.rel-brand{font-size:13px;font-weight:600}.rel-price{font-size:13px;color:var(--sub)}
.co-h{font-size:30px;letter-spacing:-.02em;margin:0 0 22px}
.co{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:start}
.co-form{display:flex;flex-direction:column;gap:16px}
.co-form label{display:flex;flex-direction:column;gap:6px;font-size:13.5px;color:var(--sub)}
.co-form input{padding:13px 14px;border:1px solid var(--line);border-radius:12px;font:inherit;background:#fff;color:var(--ink)}
.co-demo{font-size:12.5px;color:#8a6d1f;background:#fff7e6;border:1px solid #ffe3a3;border-radius:10px;padding:11px 13px;margin:2px 0}
.co-error{color:#c30;font-size:14px}.pay{margin-top:4px;text-align:center}
.co-summary{background:var(--soft);border-radius:18px;padding:22px}
.co-media{background:#fff;border-radius:12px;height:110px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.co-brand{font-weight:600}.co-model{color:var(--sub);font-size:13.5px;margin-bottom:14px}
.co-line{display:flex;justify-content:space-between;font-size:14px;padding:6px 0;color:var(--sub)}
.co-total{display:flex;justify-content:space-between;font-weight:600;font-size:17px;padding-top:12px;margin-top:6px;border-top:1px solid var(--line)}
.ok{max-width:460px;margin:20px auto;text-align:center}
.ok-check{width:60px;height:60px;border-radius:50%;background:#e7f7ee;color:#1a9d5f;font-size:30px;display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.ok h1{font-size:30px;letter-spacing:-.02em;margin:0 0 8px}.ok-sub{color:var(--sub);margin:0 0 26px}
.ok-card{background:var(--soft);border-radius:18px;padding:20px;text-align:left;margin-bottom:24px}
.ok-media{background:#fff;border-radius:12px;height:100px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.ok-brand{font-weight:600;margin-bottom:10px}
.ok-line{display:flex;justify-content:space-between;font-size:14px;padding:5px 0;color:var(--sub)}
.ok-line .mono{font-family:ui-monospace,Menlo,monospace;font-size:12px}
.ok-next{color:var(--sub);font-size:14px;margin-bottom:22px}
@media(max-width:760px){.pd{grid-template-columns:1fr;gap:24px}.co{grid-template-columns:1fr;gap:24px}.chip-sep{display:none}}