:root{--accent: #c43e1c;--accent-dark: #9c3016;--panel: #f6f7f8;--panel-line: #d8dbdf;--text: #1a1a1a;--text-dim: #5b6067;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body,#app{height:100%}body{font-family:var(--font);font-size:13px;color:var(--text);background:#3a3d42;-webkit-font-smoothing:antialiased}.boot-shell{height:100%;display:flex;align-items:center;justify-content:center;background:#2f3237}.boot-card{max-width:460px;padding:32px;text-align:center;color:#e7e9ec}.boot-badge{width:56px;height:56px;margin:0 auto 16px;border-radius:12px;background:#6b1f0e;color:#ffb59e;font-weight:700;font-size:22px;display:flex;align-items:center;justify-content:center}.boot-card h1{font-size:18px;margin-bottom:8px}.boot-tagline{color:#aeb2b8;line-height:1.5;margin-bottom:14px}.boot-features{list-style:none;color:#aeb2b8;font-size:12.5px;line-height:1.9;text-align:left;display:inline-block}.boot-loading{margin-top:14px;color:#ff9a7a}.sv-app{height:100%;display:flex;flex-direction:column}.sv-topbar{display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;background:var(--accent);color:#fff}.sv-brand,.sv-actions{display:flex;align-items:center;gap:8px}.sv-brand{min-width:0}.sv-actions{flex:none}.sv-badge{width:26px;height:26px;border-radius:6px;background:#6b1f0e;color:#ffcbbb;font-weight:700;font-size:12px;display:flex;align-items:center;justify-content:center}.sv-title{font-weight:600}.sv-save-state{color:#ffffffd1;font-size:11px;white-space:nowrap}.sv-save-state[data-state=error]{color:#fff0b3;font-weight:600}.sv-spacer{flex:1}.sv-filebtn{height:28px;padding:0 12px;border-radius:5px;border:1px solid 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rgba(0,0,0,.25);display:inline-block}.sv-color-sw.none{background:repeating-linear-gradient(45deg,#fff,#fff 3px,#e08080 3px 4px);position:relative}.sv-color-sel{border:0;background:transparent;width:16px;cursor:pointer;font-size:11px}.sv-main{flex:1;display:flex;min-height:0}.sv-rail{width:186px;flex:none;background:#ececee;border-right:1px solid #cfd2d6;display:flex;flex-direction:column}.sv-rail-list{flex:1;overflow-y:auto;padding:10px;display:flex;flex-direction:column;gap:10px}.sv-thumb{display:flex;gap:8px;align-items:center;cursor:pointer;border-radius:6px;padding:3px}.sv-thumb.active{outline:2px solid var(--accent)}.sv-thumb.dragging{opacity:.5}.sv-thumb.drop{outline:2px dashed var(--accent)}.sv-thumb-num{width:16px;text-align:right;color:var(--text-dim);font-size:11px;flex:none}.sv-thumb-frame{flex:1;border:1px solid #c2c6cb;border-radius:3px;overflow:hidden;background:#fff;line-height:0}.sv-thumb-frame canvas{width:100%;height:auto;display:block}.sv-rail-add{margin:10px;height:30px;border:1px dashed #b6bac0;border-radius:6px;background:#fff;color:var(--text-dim);cursor:pointer;font-size:12.5px}.sv-rail-add:hover{border-color:var(--accent);color:var(--accent)}.sv-stage{position:relative;flex:1;overflow:hidden;background:#3a3d42}.sv-canvas{display:block;position:absolute;inset:0;touch-action:none}.sv-textedit{position:absolute;z-index:4;border:2px solid #3c82f0;border-radius:0;padding:6px;margin:0;resize:none;outline:none;background:#fffffff5;overflow:hidden;line-height:1.32}.sv-status{display:flex;align-items:center;justify-content:space-between;height:24px;padding:0 12px;background:var(--accent);color:#fff;font-size:11.5px}.sv-status-right{opacity:.9}.sv-show{position:fixed;inset:0;z-index:100;background:#000;display:flex;align-items:center;justify-content:center;cursor:pointer}.sv-show 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