:root{color-scheme:light;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,Microsoft YaHei,PingFang SC,Hiragino Sans GB,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--claude-bg: #f5f4ef;--claude-surface: #ffffff;--claude-border: rgba(17, 24, 39, .1);--claude-text: #1f2937;--claude-muted: rgba(31, 41, 55, .6);--claude-primary: #da7756;--claude-primary-hover: #c86a4b;--claude-success: #1f9d55}body{margin:0;min-width:320px;min-height:100vh;background:var(--claude-bg);color:var(--claude-text)}#root{height:100vh}*{box-sizing:border-box}.appShell{height:100vh;display:flex;gap:20px;padding:28px}.sidebar{width:520px;max-width:56vw;background:var(--claude-surface);border:1px solid var(--claude-border);border-radius:14px;box-shadow:0 12px 30px #11182714;padding:18px;overflow:auto}.titleBlock{padding:6px 6px 14px}.title{font-size:22px;font-weight:700;letter-spacing:.2px}.subtitle{margin-top:6px;font-size:13px;color:var(--claude-muted)}.card{border:1px solid var(--claude-border);border-radius:12px;padding:14px;margin-top:14px;background:#fff}.cardTitle{font-size:14px;font-weight:650;margin-bottom:12px;color:#1f2937e6}.uploadBox{display:block;border:1px dashed rgba(17,24,39,.22);border-radius:12px;padding:14px;background:#f5f4ef99;cursor:pointer;-webkit-user-select:none;user-select:none}.uploadBox input[type=file]{display:none}.uploadButton{display:inline-flex;align-items:center;justify-content:center;padding:10px 14px;border-radius:10px;background:var(--claude-primary);color:#fff;font-weight:650}.uploadHint{margin-top:10px;font-size:12px;color:var(--claude-muted);word-break:break-all}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field .label{font-size:12px;color:#1f2937bf;margin-bottom:6px}.field input[type=number],.field select{width:100%;height:38px;border-radius:10px;border:1px solid rgba(17,24,39,.14);padding:0 10px;background:#fff;color:var(--claude-text);outline:none}.field select{padding-right:8px}.field input[type=number]:focus,.field select:focus,textarea:focus{border-color:#da7756b3;box-shadow:0 0 0 3px #da77562e}.inputWithUnit{position:relative}.inputWithUnit input{padding-right:36px}.unit{position:absolute;right:10px;top:50%;transform:translateY(-50%);font-size:12px;color:#1f293780}.colorRow{display:flex;align-items:center;gap:10px;height:38px;border-radius:10px;border:1px solid rgba(17,24,39,.14);padding:0 10px;background:#fff}.colorRow input[type=color]{width:26px;height:26px;padding:0;border:none;background:transparent;cursor:pointer}.colorHex{font-size:12px;color:#1f2937b3;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace}textarea{width:100%;height:140px;border-radius:12px;border:1px solid rgba(17,24,39,.14);padding:12px;resize:vertical;font-size:13px;line-height:1.5;outline:none}.smallHint{margin-top:8px;font-size:12px;color:#1f29378c;text-align:right}.actions{display:flex;gap:12px;margin-top:14px;padding-top:2px}.btnPrimary,.btnSecondary{height:42px;border-radius:12px;border:1px solid transparent;font-weight:650;cursor:pointer;padding:0 14px}.btnPrimary{flex:1;background:var(--claude-primary);color:#fff}.btnPrimary:hover{background:var(--claude-primary-hover)}.btnSecondary{flex:1;background:#1118270d;border-color:#1118271f;color:var(--claude-text)}.btnSecondary:hover{background:#11182714}.btnPrimary:disabled,.btnSecondary:disabled{opacity:.55;cursor:not-allowed}.previewArea{flex:1;min-width:0;display:flex}.previewCard{width:100%;background:#ffffff8c;border:1px solid var(--claude-border);border-radius:14px;box-shadow:0 12px 30px #1118270f;overflow:hidden;display:flex;flex-direction:column}.previewHeader{padding:14px 16px;font-weight:700;font-size:14px;background:#f5f4efa6;border-bottom:1px solid var(--claude-border)}.previewBody{flex:1;min-height:0;padding:18px;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#f5f4ef99}.placeholder{display:flex;flex-direction:column;align-items:center;gap:12px;color:#1f29378c}.placeholderBox{width:220px;height:220px;border-radius:14px;background:#ffffffb3;border:1px dashed rgba(17,24,39,.2)}.placeholderText{font-size:13px}.canvasWrap{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.canvasWrap canvas{display:block;max-width:100%;max-height:100%;width:auto;height:auto;background:#fff;border-radius:8px;box-shadow:0 18px 50px #1118272e}.toast{position:fixed;left:50%;bottom:22px;transform:translate(-50%) translateY(20px);background:#1f9d55f2;color:#fff;padding:10px 14px;border-radius:12px;font-weight:650;font-size:13px;opacity:0;pointer-events:none;transition:opacity .16s ease,transform .16s ease;box-shadow:0 10px 24px #11182733}.toastVisible{opacity:1;transform:translate(-50%) translateY(0)}@media(max-width:960px){.appShell{flex-direction:column;height:auto;min-height:100vh}.sidebar{width:100%;max-width:100%}.previewArea{min-height:420px}}