:root{--color-bg: #050505;--color-surface: rgba(20, 20, 20, .6);--color-surface-border: rgba(255, 255, 255, .1);--color-primary: #D4AF37;--color-primary-glow: rgba(212, 175, 55, .4);--color-text-main: #ffffff;--color-text-muted: #888888;--font-family: "Outfit", sans-serif;--transition-smooth: all .4s cubic-bezier(.16, 1, .3, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--color-bg);color:var(--color-text-main);overflow:hidden;height:100vh;display:flex;justify-content:center;align-items:center}.bg-layer{position:absolute;top:0;left:0;width:100%;height:100%;background-image:url(http://50004997.s21i.huaweicloudsite.cn/2/ABUIABACGAAg37fKwgYo3s6wlQQw5w447QY.jpg);background-size:cover;background-position:center;z-index:-2;transform:scale(1.1)}.overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at center,#0006,#000000d9);z-index:-1}.app-container{position:relative;width:100%;max-width:480px;padding:2rem;perspective:1000px;z-index:10}.glass-card{background:var(--color-surface);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--color-surface-border);border-radius:24px;padding:3rem 2rem;text-align:center;box-shadow:0 25px 50px -12px #00000080;transform-style:preserve-3d;opacity:0;transform:translateY(20px)}.logo-area{margin-bottom:2rem}.logo-icon,.app-title,.app-tagline,.btn-download,.btn-sub,.visualizer{opacity:0;transform:translateY(20px)}.logo-icon{width:80px;height:80px;background:linear-gradient(135deg,gold,#b8860b);border-radius:20px;margin:0 auto 1.5rem;display:flex;align-items:center;justify-content:center;box-shadow:0 0 30px var(--color-primary-glow);position:relative}.logo-icon svg{width:40px;height:40px;color:#000}.app-title{font-size:2.5rem;font-weight:700;letter-spacing:-.02em;margin-bottom:.5rem;background:linear-gradient(to 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