:root {
  --bg-primary: #0d0b1a;
  --bg-secondary: #1a1830;
  --bg-card: rgba(255,255,255,0.05);
  --text-primary: #ffffff;
  --text-secondary: #8b7faa;
  --accent-gradient: linear-gradient(135deg, #FF6B35, #F7C948);
  --accent-blue: #00D4FF;
  --border-radius: 16px;
  --transition: all 0.3s ease;
}
*{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;-webkit-tap-highlight-color:transparent}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
.container{max-width:480px;margin:0 auto;min-height:100vh;position:relative}
.particle-bg{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;border:none;border-radius:50px;font-size:16px;font-weight:600;cursor:pointer;transition:var(--transition);text-decoration:none}
.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:0 4px 20px rgba(255,107,53,0.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 30px rgba(255,107,53,0.5)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:rgba(255,255,255,0.1);color:var(--text-primary);border:1px solid rgba(255,255,255,0.2)}
.btn-secondary:hover{background:rgba(255,255,255,0.15)}
.btn-large{width:100%;padding:18px 32px;font-size:18px}
.card{background:var(--bg-card);border:1px solid rgba(255,255,255,0.1);border-radius:var(--border-radius);padding:24px;backdrop-filter:blur(10px)}
.title{font-size:28px;font-weight:900;line-height:1.2;margin-bottom:12px}
.subtitle{font-size:16px;color:var(--text-secondary);line-height:1.6}
.tag{display:inline-block;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600}
.tag-theme{background:rgba(255,107,53,0.2);color:#FF6B35}
.loading{display:flex;align-items:center;justify-content:center;padding:40px}
.loading-spinner{width:40px;height:40px;border:3px solid rgba(255,255,255,0.1);border-top-color:#FF6B35;border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;visibility:hidden;transition:var(--transition)}
.modal.active{opacity:1;visibility:visible}
.modal-content{background:var(--bg-secondary);border-radius:var(--border-radius);padding:32px;max-width:360px;width:90%;text-align:center;transform:scale(0.9);transition:var(--transition)}
.modal.active .modal-content{transform:scale(1)}
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.animate-fadeIn{animation:fadeIn .6s ease forwards}
.input{width:100%;padding:14px 16px;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);border-radius:12px;color:var(--text-primary);font-size:16px;outline:none;transition:var(--transition)}
.input:focus{border-color:#FF6B35;box-shadow:0 0 0 3px rgba(255,107,53,0.2)}
.input::placeholder{color:var(--text-secondary)}
.textarea{width:100%;padding:14px 16px;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);border-radius:12px;color:var(--text-primary);font-size:16px;outline:none;transition:var(--transition);resize:none;min-height:60px;font-family:inherit}
.textarea:focus{border-color:#FF6B35;box-shadow:0 0 0 3px rgba(255,107,53,0.2)}
.textarea::placeholder{color:var(--text-secondary)}
.toast{position:fixed;top:20px;left:50%;transform:translateX(-50%) translateY(-100px);background:rgba(0,0,0,.9);padding:12px 24px;border-radius:50px;z-index:9999;opacity:0;transition:all .3s ease}
.toast.active{transform:translateX(-50%) translateY(0);opacity:1}
.toast-message{color:#fff;font-size:14px}
.qrcode-container{background:#fff;padding:16px;border-radius:12px;display:inline-block}
.qrcode-container img,.qrcode-container canvas{display:block}
@media(max-width:480px){html{font-size:15px}.container{padding:0 16px}.card{padding:20px}.title{font-size:24px}}
@supports(padding-bottom:env(safe-area-inset-bottom)){body{padding-bottom:env(safe-area-inset-bottom)}}