:root{--blush-50: #fdf4f6;--blush-100: #f9e4ea;--blush-200: #efc9d9;--blush-300: #eab0c9;--rose-400: #dd7fa3;--rose-500: #bb5c85;--rose-600: #9c3f66;--gold: #cc9a44;--gold-soft: #e2bd72;--ink: #4a3439;--ink-soft: #8a6b72;--white: #fffaf9;--font-fa: "Vazirmatn", "Tahoma", sans-serif;--font-script: "Allura", cursive;--font-serif: "Cormorant Garamond", serif;--card-max: 520px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--blush-50);color:var(--ink);font-family:var(--font-fa);-webkit-font-smoothing:antialiased;overflow-x:hidden}body{min-height:100vh;display:flex;justify-content:center}.hidden{display:none!important}button{font-family:inherit;cursor:pointer}#envelope-screen{position:fixed;top:0;bottom:0;width:100%;max-width:var(--card-max);margin:0 auto;left:0;right:0;display:flex;align-items:flex-start;justify-content:center;background:linear-gradient(160deg,var(--blush-50) 0%,var(--blush-100) 55%,var(--blush-200) 100%);z-index:100;transition:opacity .6s 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6px;font-size:16px;font-weight:500}.closing-en{margin:0 0 20px;font-family:var(--font-serif);font-style:italic;font-size:14px;color:var(--ink-soft)}.signature{margin:0;font-family:var(--font-script);font-size:30px;color:var(--rose-600)}.music-btn{position:fixed;bottom:18px;right:max(18px,calc((100vw - var(--card-max)) / 2 + 18px));width:44px;height:44px;border-radius:50%;border:2px solid var(--white);background:linear-gradient(160deg,var(--gold-soft),var(--rose-500));color:var(--white);display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px -6px #a8506d99;z-index:50;transition:transform .2s ease}.music-btn:active{transform:scale(.92)}@media(max-width:380px){.couple-names{font-size:42px}.cd-box{width:68px}.envelope{width:220px;height:148px}.envelope-wrap{gap:24px}.envelope-message-title{font-size:28px;margin-bottom:10px}.envelope-message-body{font-size:13.5px;line-height:1.8}}@media(min-width:640px){body{background:linear-gradient(160deg,var(--blush-100),var(--blush-50));padding:40px 0}#main-card{border-radius:22px;overflow:hidden}}