*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:linear-gradient(135deg,#fff8e1,#ffe0b2);min-height:100vh;padding:16px;line-height:1.6;color:#333}#app{width:100%}.container{width:100%;max-width:100%;margin:0 auto;display:flex;justify-content:center;align-items:flex-start;min-height:100vh}.card{width:100%;max-width:500px;background:#fff;border-radius:16px;box-shadow:0 8px 32px #00000014;padding:24px;margin:0 auto}h1{text-align:center;font-size:1.8rem;color:#ff7043;margin-bottom:20px;font-weight:700}.code-display{background:#f9f9f9;border-radius:12px;padding:16px;margin-bottom:20px;text-align:center}.trace-code{margin-bottom:12px}.trace-code .label{font-weight:700;color:#555;margin-right:8px}.trace-code .value{font-family:monospace;font-size:1.2rem;color:#ff7043;font-weight:700}.qr-preview{display:flex;flex-direction:column;align-items:center}.qr-preview img{width:160px;height:160px;border-radius:8px;box-shadow:0 2px 8px #0000001a;margin-bottom:12px}.form-section{width:100%}.form-row{display:flex;gap:16px;margin-bottom:16px}.form-group{flex:1}.form-group.half{flex:0 0 calc(50% - 8px)}label{display:block;font-size:.9rem;color:#555;margin-bottom:6px;font-weight:500}input{width:100%;padding:12px;border:1px solid #ddd;border-radius:8px;font-size:1rem;transition:all .3s;background-color:#f9f9f9}input:focus{outline:none;border-color:#ff7043;box-shadow:0 0 0 2px #ff704333;background-color:#fff}.form-actions{display:flex;gap:12px;margin-top:20px}button{padding:14px;font-size:1rem;border:none;border-radius:8px;cursor:pointer;transition:all .3s;font-weight:600;flex:1}.primary{background:linear-gradient(135deg,#ffc845,#ff7043);color:#fff}.primary:hover{transform:translateY(-2px);box-shadow:0 4px 12px #ff704359}.secondary{background:#f5f5f5;color:#333}.secondary:hover{background:#e0e0e0}.secondary.small{padding:8px 12px;font-size:.9rem;flex:0 0 auto}@media (max-width: 768px){body{padding:12px}.card{padding:20px;border-radius:14px}h1{font-size:1.5rem;margin-bottom:16px}.form-row{flex-direction:column;gap:12px}.form-group.half{flex:1}input{padding:12px}.qr-preview img{width:140px;height:140px}.form-actions{flex-direction:column;gap:10px}}@media (max-width: 480px){.card{padding:16px}h1{font-size:1.4rem}.code-display{padding:12px}.trace-code .value{font-size:1.1rem}.qr-preview img{width:120px;height:120px}}