:root{--rg-bg: #0B0D11;--rg-surface: #12161E;--rg-surface-card: rgba(18, 22, 30, .85);--rg-gold: #D4AF37;--rg-gold-light: #FBF7EE;--rg-gold-dark: #B89324;--rg-border: rgba(212, 175, 55, .28);--rg-text: #FBF7EE;--rg-text-muted: #A0AEC0}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--rg-bg);color:var(--rg-text);font-family:Outfit,-apple-system,BlinkMacSystemFont,sans-serif;overflow-x:hidden;-webkit-font-smoothing:antialiased}.font-serif{font-family:Playfair Display,Georgia,serif}.mobile-card-container{width:100%;max-width:480px;margin:0 auto;min-height:100vh;position:relative;background-color:#0f1218;box-shadow:0 0 50px #000c,0 0 30px #d4af3726}.envelope-overlay{position:fixed;top:0;right:0;bottom:0;left:0;width:100vw;height:100vh;height:100dvh;z-index:9999}.envelope-body-card{width:100%;height:100%;min-height:100vh;min-height:100dvh}@media(max-width:600px){.mobile-card-container{max-width:100%!important;width:100%!important;box-shadow:none!important}.envelope-overlay{width:100vw!important;height:100vh!important;height:100dvh!important}.envelope-body-card{max-width:100%!important;width:100%!important;height:100%!important;min-height:100vh!important;min-height:100dvh!important;border-radius:0!important;margin:0!important}}.rg-gold-gradient{background:linear-gradient(135deg,#fff6e5,#d4af37,#b89324);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.rg-card{background:var(--rg-surface-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--rg-border);border-radius:14px}@keyframes waxPulse{0%,to{transform:scale(1);box-shadow:0 12px 28px #8a6a3f73,inset 0 3px 6px #fff9}50%{transform:scale(1.04);box-shadow:0 16px 36px #d4af37a6,inset 0 3px 6px #fffc}}.wax-seal-button:not(.wax-seal-pop){animation:waxPulse 2.8s ease-in-out infinite}.wax-seal-button.wax-seal-pop{transform:scale(1.25)!important;opacity:0!important}.flap-open-top{transform:translateY(-110%)!important}.flap-open-bottom{transform:translateY(110%)!important}@keyframes calloutPulse{0%,to{transform:scale(1);opacity:.95}50%{transform:scale(1.03);opacity:1}}.tap-to-open-pulse{animation:calloutPulse 2.2s ease-in-out infinite}@keyframes audioPulseRing{0%{transform:scale(.95);opacity:.8}50%{transform:scale(1.35);opacity:0}to{transform:scale(.95);opacity:0}}.audio-pulse-ring{position:absolute;top:-6px;right:-6px;bottom:-6px;left:-6px;border-radius:50%;border:2px solid rgba(212,175,55,.5);animation:audioPulseRing 2.4s cubic-bezier(.25,1,.5,1) infinite;pointer-events:none}@keyframes soundwave{0%,to{height:4px}50%{height:16px}}.soundwave-bar{width:3px;background-color:var(--rg-gold);border-radius:2px;animation:soundwave 1.2s ease-in-out infinite}.soundwave-bar:nth-child(2){animation-delay:.2s}.soundwave-bar:nth-child(3){animation-delay:.4s}