:root{--night:#05090d;--ink:#fff7e8;--muted:rgba(255,247,232,.68);--gold:#d8b96a;--gold2:#fff0a8;--line:rgba(255,247,232,.14)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#05090d url("./assets/products/product-detail-bg.png") center top/cover fixed no-repeat;font-family:"Noto Serif SC","Songti SC","STSong","Microsoft YaHei",serif}body::before{position:fixed;inset:0;z-index:-1;content:"";background:linear-gradient(180deg,rgba(5,9,13,.58),rgba(5,9,13,.9) 50%,#05090d 100%),radial-gradient(circle at 18% 10%,rgba(216,185,106,.16),transparent 28rem);pointer-events:none}a{color:inherit;text-decoration:none}button{font:inherit}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:76px;padding:0 5vw;border-bottom:1px solid 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