:root{--accent: #3b82f6;--panel: #ffffff;--panel-2: #f9fafb;--border: #e5e7eb;--text-strong: #1f2937;--text-muted: #6b7280;--wechat: #07c160;--alipay: #1677ff}.tool-container{max-width:800px;margin:0 auto}.tool-header{margin-bottom:20px}.tool-header h1{margin:0 0 8px;font-size:22px;color:var(--text-strong)}.tool-header p{margin:0;font-size:14px;color:var(--text-muted)}.tool-section{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:24px;margin-bottom:20px;box-shadow:0 1px 3px #0000001a,0 1px 2px #0000000f}.section-title{font-size:16px;font-weight:600;color:var(--text-strong);margin:0 0 16px;padding-bottom:12px;border-bottom:1px solid var(--border)}.upload-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}.upload-panel{border:2px dashed var(--border);border-radius:12px;padding:30px 20px;text-align:center;cursor:pointer;transition:all .2s;position:relative}.upload-panel:hover{border-color:var(--accent);background:var(--panel-2)}.upload-panel.has-image{border-style:solid;border-color:var(--accent);padding:10px}.upload-panel.wechat:hover,.upload-panel.wechat.has-image{border-color:var(--wechat)}.upload-panel.alipay:hover,.upload-panel.alipay.has-image{border-color:var(--alipay)}.upload-icon{font-size:48px;margin-bottom:12px}.upload-text{font-size:14px;color:var(--text-muted);margin-bottom:8px}.upload-hint{font-size:12px;color:var(--text-muted);opacity:.7}.upload-input{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer}.preview-image{max-width:100%;max-height:150px;border-radius:8px}.btn-group{display:flex;gap:12px;margin-top:20px}.btn{flex:1;padding:14px 24px;border:none;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s}.btn-primary{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;box-shadow:0 2px 8px #3b82f64d}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 12px #3b82f666}.btn-primary:disabled{background:var(--text-muted);cursor:not-allowed;transform:none}.btn-secondary{background:var(--panel-2);color:var(--text-strong);border:1px solid var(--border)}.btn-secondary:hover{background:var(--border)}.result-section{text-align:center;padding:30px}.qr-merge-container{display:inline-block;position:relative;width:280px;height:280px;padding:0;background:#fff;border-radius:16px;box-shadow:0 4px 20px #0000001a;margin-bottom:20px;overflow:hidden}.wechat-qr{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;border-radius:16px}.alipay-qr{position:absolute;bottom:0;right:0;width:70px;height:70px;object-fit:cover;border-radius:8px}.result-label{font-size:14px;color:var(--text-muted);margin-bottom:16px}.how-it-works{background:var(--panel-2);border-radius:12px;padding:20px;margin-top:20px}.how-it-works h3{font-size:14px;font-weight:600;color:var(--text-strong);margin:0 0 12px}.how-it-works p{font-size:13px;color:var(--text-muted);margin:0;line-height:1.8}.tips-list{list-style:none;padding:0;margin:12px 0 0}.tips-list li{font-size:13px;color:var(--text-muted);padding:6px 0 6px 20px;position:relative}.tips-list li:before{content:"•";position:absolute;left:6px;color:var(--accent)}.platform-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600;margin-bottom:12px}.platform-badge.wechat{background:#e6f7ed;color:var(--wechat)}.platform-badge.alipay{background:#e6f0ff;color:var(--alipay)}.parsed-link-section{margin-top:20px;padding:16px;background:var(--panel-2);border-radius:12px}.parsed-link-title{font-size:14px;font-weight:600;color:var(--text-strong);margin-bottom:8px}.parsed-link{font-size:12px;color:var(--accent);word-break:break-all;background:#fff;padding:10px;border-radius:8px;border:1px solid var(--border);font-family:monospace}.parsed-link.empty{color:var(--text-muted);font-style:italic}[data-theme=dark]{--panel: #1f2937;--panel-2: #374151;--border: #4b5563;--text-strong: #e5e7eb;--text-muted: #9ca3af}[data-theme=dark] .tool-section{background:var(--panel);border-color:var(--border)}[data-theme=dark] .upload-panel:hover,[data-theme=dark] .how-it-works,[data-theme=dark] .parsed-link-section{background:var(--panel-2)}[data-theme=dark] .parsed-link{background:var(--panel);border-color:var(--border)}[data-theme=dark] .platform-badge.wechat{background:#07c16026}[data-theme=dark] .platform-badge.alipay{background:#1677ff26}@media (max-width: 640px){.upload-row{grid-template-columns:1fr}.tool-section{padding:16px}}