:root{--primary: #1677ff;--alipay: #1677ff;--wxpay: #07c160;--bg: #f5f6fa;--card-bg: #ffffff;--text: #1a1a2e;--text-secondary: #6b7280;--border: #e5e7eb;--danger: #ef4444;--success: #22c55e;--warning: #f59e0b;--radius: 12px;--shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .08), 0 4px 10px rgba(0, 0, 0, .04)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;display:flex;justify-content:center;padding:40px 16px}.container{width:100%;max-width:520px}.header{text-align:center;margin-bottom:32px}.header h1{font-size:28px;font-weight:700;letter-spacing:-.5px;margin-bottom:6px}.header p{color:var(--text-secondary);font-size:14px}.card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 24px;margin-bottom:20px}.tab-container{display:flex;background:#f3f4f6;border-radius:10px;padding:4px;margin-bottom:24px}.tab-btn{flex:1;padding:10px 16px;border:none;background:transparent;border-radius:8px;cursor:pointer;font-size:15px;font-weight:600;color:var(--text-secondary);transition:all .25s ease;display:flex;align-items:center;justify-content:center;gap:8px}.tab-btn.active{background:#fff;color:var(--text);box-shadow:0 1px 3px #00000014}.tab-btn.alipay.active{color:var(--alipay)}.tab-btn.wxpay.active{color:var(--wxpay)}.tab-icon{width:22px;height:22px;flex-shrink:0}.form-group{margin-bottom:18px}.form-group label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.form-group label .required{color:var(--danger);margin-left:2px}.form-row{display:flex;gap:12px}.form-row .form-group{flex:1}.input{width:100%;padding:10px 14px;border:1.5px solid var(--border);border-radius:8px;font-size:15px;color:var(--text);transition:border-color .2s,box-shadow .2s;background:#fafbfc;outline:none}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #1677ff1a;background:#fff}.input::placeholder{color:#c0c6cf}.input.amount{font-size:20px;font-weight:600;letter-spacing:1px}.hint{font-size:12px;color:#9ca3af;margin-top:4px}.btn{width:100%;padding:13px 20px;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s;letter-spacing:.5px;position:relative;overflow:hidden}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:#0958d9;box-shadow:0 4px 12px #1677ff59}.btn-primary:active{transform:scale(.98)}.btn-primary:disabled{background:#a0c4ff;cursor:not-allowed;box-shadow:none}.btn-alipay{background:var(--alipay);color:#fff}.btn-alipay:hover{background:#0958d9;box-shadow:0 4px 12px #1677ff59}.btn-wxpay{background:var(--wxpay);color:#fff}.btn-wxpay:hover{background:#06ad56;box-shadow:0 4px 12px #07c16059}.spinner{display:inline-block;width:18px;height:18px;border:2.5px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;margin-right:8px;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}.error-msg{background:#fef2f2;border:1px solid #fecaca;color:#dc2626;padding:12px 16px;border-radius:8px;font-size:14px;margin-top:16px;display:none}.error-msg.show{display:block}.result-card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:32px 24px;text-align:center;display:none}.result-card.show{display:block}.result-card h3{font-size:18px;margin-bottom:8px}.result-card .status-badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:20px}.status-PROCESSING{background:#fef3c7;color:#92400e}.status-SUCCESS{background:#dcfce7;color:#166534}.status-FAILED{background:#fef2f2;color:#991b1b}.qr-container{display:flex;justify-content:center;margin:16px 0}.qr-wrapper{padding:16px;background:#fff;border:1px solid var(--border);border-radius:12px;display:inline-block}.qr-wrapper canvas,.qr-wrapper img{display:block}.qr-hint{font-size:13px;color:var(--text-secondary);margin-top:12px}.qr-hint .icon-scan{display:inline-block;width:16px;height:16px;margin-right:4px;vertical-align:-3px}.info-list{text-align:left;margin-top:20px;border-top:1px solid var(--border);padding-top:16px}.info-item{display:flex;justify-content:space-between;padding:6px 0;font-size:13px}.info-item .label{color:var(--text-secondary)}.info-item .value{font-weight:500;word-break:break-all;text-align:right;max-width:60%}.info-item .value.mono{font-family:SF Mono,Fira Code,Menlo,monospace;font-size:12px}.btn-new{margin-top:20px;padding:10px 24px;background:transparent;border:1.5px solid var(--border);border-radius:8px;color:var(--text-secondary);font-size:14px;cursor:pointer;transition:all .2s}.btn-new:hover{border-color:#9ca3af;color:var(--text)}.footer{text-align:center;color:#c0c6cf;font-size:12px;margin-top:24px}