:root{--bg:#10080a;--ink:#f3e7e1;--muted:#9f7f83;--accent:#d53b55;--deep:#641724;--pad:max(20px, env(safe-area-inset-left));--pad-right:max(20px, env(safe-area-inset-right));--pad-top:max(20px, env(safe-area-inset-top));--pad-bottom:max(20px, env(safe-area-inset-bottom));--serif:Georgia, "Times New Roman", serif;--sans:-apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, SFMono-Regular, Menlo, monospace}.letter-cover{z-index:400;background:radial-gradient(120% 90% at 50% 42%, #1a0c10 0%, var(--bg) 62%, #0a0507 100%);cursor:pointer;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none;flex-direction:column;justify-content:center;align-items:center;gap:26px;display:flex;position:fixed;inset:0}.letter-cover-envelope{filter:drop-shadow(0 18px 44px #d53b5559);width:min(88vw,430px);height:min(88vw,420px)}.letter-cover-to{font:italic 400 clamp(30px, 7vw, 44px) / 1.2 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