.bks-app{--ink:#20241d;--paper:#faf9f6;--surface:#fffefa;--line:#ddded6;--accent:#f6d33d;--muted:#6b7167;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.6;min-height:100vh;font-synthesis:none}.bks-app *{box-sizing:border-box}.bks-app a{color:inherit;text-decoration:none}.bks-app button,.bks-app input,.bks-app select,.bks-app textarea{font:inherit}.bks-app button{cursor:pointer}.bks-app button:disabled{cursor:not-allowed;opacity:.5}.bks-app a:focus-visible,.bks-app button:focus-visible,.bks-app input:focus-visible,.bks-app textarea:focus-visible,.bks-app select:focus-visible{outline:3px solid #b2951e;outline-offset:3px}.bks-app button svg,.bks-app a svg{flex-shrink:0}.bks-app .shell{max-width:1340px;padding-inline:4.8%;margin:auto}.bks-app .header{height:110px;display:flex;align-items:center;gap:25px}.bks-app 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