:root{color-scheme:light;--bg: #f3f5f7;--panel: #ffffff;--text: #172033;--muted: #667085;--line: #d9e0ea;--primary: #2563eb;--shadow: 0 10px 30px rgba(15, 23, 42, .08)}*{box-sizing:border-box}html,body,#app{min-height:100%}html,body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input{font:inherit}body{padding:18px}.file-input{position:fixed;inset:auto auto 0 0;width:1px;height:1px;opacity:.01;pointer-events:none}.app{width:min(980px,100%);margin:0 auto;display:grid;gap:16px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:16px}.panel-head h1,.panel-head h2{margin:0;font-size:20px;line-height:1.2}.panel-head p{margin:6px 0 0;color:var(--muted)}.stage-wrap,.editor-stage-wrap{margin-top:14px;display:flex;justify-content:center}.stage,.editor-stage{width:min(100%,360px);aspect-ratio:5 / 7;position:relative;overflow:hidden;border-radius:10px;background:#dfe7f1;border:1px solid #c7d0db;touch-action:none}.stage video,.stage img,.editor-stage img{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover}.editor-stage img{object-fit:contain;-webkit-user-select:none;user-select:none;-webkit-user-drag:none}.mask{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;background:linear-gradient(to bottom,#0000005c,#0000001f 14%,#0000 24%,#0000 76%,#0000001f 86%,#0000005c),linear-gradient(to right,#0000002e,#0000 16%,#0000 84%,#0000002e);mix-blend-mode:multiply}.guide,.frame{position:absolute;top:14px;right:14px;bottom:14px;left:14px;border-radius:8px;border:2px dashed rgba(255,255,255,.92);pointer-events:none}.guide{display:flex;align-items:flex-start;justify-content:center;padding-top:10px;border:none;color:#ffffffe6;text-shadow:0 1px 2px rgba(0,0,0,.25);font-weight:600}.actions,.controls,.swatches{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:14px}.btn{border:1px solid var(--line);background:#fff;color:var(--text);border-radius:10px;padding:10px 14px;cursor:pointer}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn.ghost{background:#f8fafc}.btn:disabled{opacity:.45;cursor:not-allowed}.status{margin-top:12px;color:var(--muted)}.control{display:grid;gap:8px;min-width:min(100%,360px)}.control input[type=range]{width:100%}.swatches{gap:8px}.swatch{width:28px;height:28px;padding:0;border-radius:999px;border:2px solid transparent;box-shadow:inset 0 0 0 1px #0f172a1f}.swatch.active{border-color:#111827}.result{margin-top:14px;display:grid;justify-content:center}.result canvas{width:min(100%,300px);height:auto;border:1px solid var(--line);border-radius:8px;background:#fff}@media (max-width: 640px){body{padding:12px}.panel{padding:14px}.stage,.editor-stage{width:100%}}