:root{--bg:#fff;--surface:#fff;--surface-subtle:#f7f8fa;--text:#1f2937;--muted:#6b7280;--border:#e5e7eb;--accent:#be123c;--accent-text:#fff;--warn-bg:#fff7ed;--warn-text:#9a3412;--radius:14px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*{box-sizing:border-box}[hidden]{display:none!important}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}body{background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%;margin:0;font-family:Hiragino Sans,Noto Sans JP,Yu Gothic UI,Meiryo,system-ui,sans-serif;line-height:1.6}.site-header{text-align:center;padding:28px 16px 8px}.top-nav{border-bottom:1px solid var(--border);padding:10px 16px}.top-nav-link{color:var(--text);align-items:center;gap:8px;font-size:.85rem;font-weight:600;text-decoration:none;display:inline-flex}.top-nav-link:hover,.top-nav-link:focus-visible{color:var(--accent)}.top-nav-link svg{border-radius:4px;flex:none;width:18px;height:18px}.site-header h1{margin:0;font-size:1.6rem}.tagline{color:var(--muted);margin:4px 0 0;font-size:.9rem}.layout{grid-template-columns:minmax(0,1fr);gap:14px;max-width:760px;margin:0 auto;padding:16px;display:grid}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:0 1px 2px #1018280a}.card h2{margin:0 0 10px;font-size:1rem}.field{margin-top:10px;display:block}.field:first-of-type{margin-top:0}.label{color:var(--muted);justify-content:space-between;margin-bottom:4px;font-size:.85rem;display:flex}input[type=number],input[type=text],select,textarea{width:100%;font:inherit;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:10px;padding:10px 12px;font-size:16px}textarea{resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}input:focus-visible,select:focus-visible,textarea:focus-visible,.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn{min-height:44px;font:inherit;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;gap:6px;padding:0 16px;font-weight:600;text-decoration:none;display:inline-flex}.btn:hover:not(:disabled){border-color:var(--accent)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text);width:100%;margin-top:14px}.btn.ghost{background:0 0;margin-top:8px;font-size:.85rem}.btn.download{background:var(--surface-subtle);width:100%}.download-icon{flex-shrink:0;width:16px;height:16px}.stack-gap{margin-top:14px}.file-name{color:var(--text);overflow-wrap:break-word;margin:0 0 6px;font-size:.85rem;font-weight:600}.size-info{color:var(--muted);margin:0;font-size:.85rem}.size-info strong{color:var(--text)}.file-field{cursor:pointer;text-align:center;border:2px dashed var(--border);border-radius:10px;padding:24px 12px}.file-field.dragover{border-color:var(--accent);background:var(--surface-subtle)}.file-field .label{justify-content:center;margin-bottom:10px}.file-btn-label{pointer-events:none}.shape-field{border:0;margin:14px 0 0;padding:0}.shape-row{flex-wrap:wrap;gap:14px;display:flex}.shape-option{cursor:pointer;align-items:center;gap:6px;min-height:44px;padding:4px 2px;font-size:.9rem;display:inline-flex}.shape-option input[type=radio],.shape-option input[type=checkbox]{flex-shrink:0;width:18px;height:18px}.note{color:var(--muted);margin:8px 0 0;font-size:.78rem}.note.warn-note{color:var(--warn-text)}.loading-indicator{color:var(--accent)}.error-message{background:var(--warn-bg);color:var(--warn-text);border-radius:8px;margin:8px 0 0;padding:10px 12px;font-size:.85rem}.editor-hint{margin-top:14px}.canvas-wrap{border:1px solid var(--border);background:repeating-conic-gradient(#eef0f3 0% 25%,#fff 0% 50%) 50%/20px 20px;border-radius:10px;justify-content:center;padding:8px;display:flex;position:relative}#canvas{cursor:crosshair;touch-action:none;max-width:100%;height:auto;max-height:70vh;display:block}.selection{border:2px dashed var(--accent);pointer-events:none;background:#be123c1f;position:absolute}.editor-actions{flex-wrap:wrap;align-items:center;gap:8px;margin-top:12px;display:flex}.region-count{color:var(--muted);margin-left:auto;font-size:.85rem}.download-row{flex-wrap:wrap;align-items:flex-end;gap:10px;margin-top:16px;display:flex}.download-row .format-field{flex:200px;margin:0}.download-row .btn.download{flex:240px}input[type=range]{width:100%;accent-color:var(--accent)}.result-box{border-top:1px solid var(--border);gap:10px;margin-top:16px;padding-top:14px;display:grid}.area-about p{color:var(--muted);line-height:1.7}.area-about h3{margin-top:20px}.how-to{color:var(--muted);padding-left:1.3em;line-height:1.8}.area-about details{border-top:1px solid var(--border);padding:10px 0}.area-about summary{cursor:pointer;font-weight:600}.area-about details p{margin:8px 0 0}.related-links{padding-left:1.3em;line-height:1.9}.related-links a{color:var(--accent)}.support{text-align:center}.support p{color:var(--muted);margin:0 0 12px;font-size:.9rem}.support-buttons{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.btn.coffee{color:#1f2937;background:#fd0;border-color:#fd0}.btn.amazon{color:#1f2937;background:#f90;border-color:#f90}.site-footer{text-align:center;color:var(--muted);padding:16px 16px 32px}