:root{--sand: #e8dcc6;--ink: #0a0c0e;--gold: #d8a866;--glow: rgba(255, 208, 150, .75)}*{box-sizing:border-box}html,body{margin:0;height:100%;background:#05070a;overflow:hidden;color:var(--sand);font-family:PingFang SC,Microsoft YaHei,Segoe UI,system-ui,sans-serif}#root{height:100%}#scene{position:fixed;inset:0;width:100%;height:100%;display:block}.vignette{position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse at 50% 45%,transparent 45%,rgba(0,0,0,.55) 100%);mix-blend-mode:multiply;opacity:.8}.grain{position:fixed;inset:-50%;pointer-events:none;opacity:.05;animation:grain 1.1s steps(3) infinite;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E")}@keyframes 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button:hover{border-color:var(--gold);color:#fff2d9}.shutter-flash{position:fixed;inset:0;background:#fff;z-index:60;pointer-events:none;animation:shutter .55s ease-out forwards}@keyframes shutter{0%{opacity:.85}to{opacity:0}}