:root{--paper:#f3f0e8;--panel:#faf8f2;--ink:#292825;--muted:#716e67;--line:#d7d2c8;--accent:#cc785c;--green:#7a9b83;--blue:#7d8f99;--display:"Noto Serif SC",Georgia,"Times New Roman",serif;--sans:"Noto Sans SC","Microsoft YaHei",sans-serif;--mono:Consolas,"Courier New",monospace}*{box-sizing:border-box}html{background:var(--paper)}body{margin:0;color:var(--ink);font-family:var(--sans);letter-spacing:0}a{color:inherit;text-decoration:none}button,input,select{font:inherit;color:inherit}.catalog-header{height:78px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1200px)/2));position:sticky;top:0;z-index:20;background:rgba(243,240,232,.94);backdrop-filter:blur(15px)}.catalog-brand{display:flex;align-items:center;gap:11px;font:700 18px var(--display)}.catalog-brand img{border-radius:9px}.catalog-brand b{font:10px var(--mono);color:var(--muted);border:1px solid var(--line);padding:2px 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