*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--sf-bg: #ffffff;--sf-bg2: #f8fafc;--sf-text: #1e293b;--sf-text2: #64748b;--sf-border: #e2e8f0;--sf-primary: #6366f1;--sf-primary-hover: #4f46e5;--sf-shadow: 0 2px 12px rgba(0,0,0,.08);--sf-radius: 8px}[data-theme=dark]{--sf-bg: #1a1a2e;--sf-bg2: #16213e;--sf-text: #e2e8f0;--sf-text2: #94a3b8;--sf-border: #334155;--sf-shadow: 0 2px 12px rgba(0,0,0,.3)}body{font-family:system-ui,-apple-system,Segoe UI,sans-serif;overflow:hidden;background:var(--sf-bg);color:var(--sf-text)}.sf-app{display:flex;flex-direction:column;height:100vh;width:100vw}.sf-toolbar{display:flex;align-items:center;gap:6px;padding:6px 12px;background:var(--sf-bg);border-bottom:1px solid var(--sf-border);box-shadow:var(--sf-shadow);z-index:50;flex-shrink:0;overflow-x:auto;flex-wrap:nowrap}.sf-toolbar::-webkit-scrollbar{height:0}.sf-tools{display:flex;gap:2px;padding:2px;background:var(--sf-bg2);border-radius:var(--sf-radius)}.sf-tool-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;border-radius:6px;background:transparent;color:var(--sf-text2);cursor:pointer;transition:all .15s ease;flex-shrink:0}.sf-tool-btn:hover{background:var(--sf-border);color:var(--sf-text)}.sf-tool-btn.active{background:var(--sf-primary);color:#fff;box-shadow:0 1px 4px #6366f14d}.sf-colors{display:flex;align-items:center;gap:4px;padding-left:6px;border-left:1px solid var(--sf-border);flex-shrink:0}.sf-color-label{font-size:11px;color:var(--sf-text2);font-weight:500}.sf-color-input{width:24px;height:24px;border:2px solid var(--sf-border);border-radius:6px;padding:0;cursor:pointer;-webkit-appearance:none;flex-shrink:0}.sf-color-input::-webkit-color-swatch-wrapper{padding:2px}.sf-color-input::-webkit-color-swatch{border:none;border-radius:3px}.sf-fill-none-btn{font-size:11px;padding:4px 8px;border:1px solid var(--sf-border);border-radius:4px;background:transparent;color:var(--sf-text2);cursor:pointer}.sf-fill-none-btn.active{background:var(--sf-primary);color:#fff;border-color:var(--sf-primary)}.sf-stroke-width{display:flex;gap:2px;padding-left:6px;border-left:1px solid var(--sf-border);flex-shrink:0}.sf-sw-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:1px solid transparent;border-radius:4px;background:transparent;cursor:pointer;color:var(--sf-text2)}.sf-sw-btn:hover{background:var(--sf-bg2)}.sf-sw-btn.active{border-color:var(--sf-primary);color:var(--sf-primary)}.sf-right-controls{display:flex;align-items:center;gap:3px;margin-left:auto;flex-shrink:0}.sf-icon-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;border-radius:6px;background:transparent;color:var(--sf-text2);cursor:pointer;transition:all .15s ease}.sf-icon-btn:hover{background:var(--sf-bg2);color:var(--sf-text)}.sf-icon-btn.active{color:var(--sf-primary)}.sf-zoom-label{font-size:12px;font-weight:600;color:var(--sf-text2);min-width:42px;text-align:center}.sf-watermark{position:fixed;bottom:12px;left:16px;font-size:13px;font-weight:700;color:var(--sf-primary);opacity:.5;pointer-events:none;z-index:10;letter-spacing:.5px}.sf-text-hint{position:absolute;top:8px;left:50%;transform:translate(-50%);background:var(--sf-primary);color:#fff;font-size:12px;font-weight:500;padding:4px 14px;border-radius:16px;pointer-events:none;z-index:60;white-space:nowrap;box-shadow:0 2px 8px #00000026;animation:sf-hint-fade .3s ease}@keyframes sf-hint-fade{0%{opacity:0;transform:translate(-50%) translateY(-4px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.sf-footer{position:fixed;bottom:8px;right:16px;display:flex;align-items:center;gap:12px;font-size:11px;color:var(--sf-text2);z-index:10;opacity:.6;transition:opacity .2s}.sf-footer:hover{opacity:1}.sf-footer a{color:var(--sf-text2);text-decoration:none}.sf-footer a:hover{color:var(--sf-primary);text-decoration:underline}.sf-donate-btn{display:inline-flex;align-items:center;gap:3px;padding:2px 6px;border:1px solid var(--sf-border);border-radius:4px;background:transparent;color:var(--sf-text2);font-size:11px;cursor:pointer;transition:all .2s}.sf-donate-btn:hover{background:var(--sf-bg2);color:#e03131;border-color:#e03131}.sf-lang-btn{display:inline-flex;align-items:center;gap:3px;padding:2px 6px;border:1px solid var(--sf-border);border-radius:4px;background:transparent;color:var(--sf-text2);font-size:11px;cursor:pointer;transition:all .2s}.sf-lang-btn:hover{background:var(--sf-bg2);color:var(--sf-primary);border-color:var(--sf-primary)}.sf-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:9999}.sf-modal{background:var(--sf-bg);color:var(--sf-text);border:1px solid var(--sf-border);border-radius:12px;padding:24px;max-width:420px;width:90%;box-shadow:0 8px 32px #0003}.sf-modal h3{margin:0 0 12px;font-size:16px}.sf-modal p{font-size:13px;line-height:1.6;color:var(--sf-text2);margin:0 0 8px}.sf-modal button{margin-top:16px;padding:6px 16px;border:1px solid var(--sf-border);border-radius:6px;background:var(--sf-bg2);color:var(--sf-text);cursor:pointer;font-size:13px}.sf-modal button:hover{background:var(--sf-primary);color:#fff;border-color:var(--sf-primary)}.sf-modal .sf-qr-placeholder{width:180px;height:180px;margin:16px auto;border:2px dashed var(--sf-border);border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--sf-text2);font-size:12px;text-align:center}.sf-modal .sf-qr-label{text-align:center;font-size:14px;font-weight:600;color:var(--sf-text);margin-bottom:4px}.sf-modal .sf-qr-sub{text-align:center;font-size:12px;color:var(--sf-text2)}