:root{--bg: #101216;--panel: #191c22;--panel-2: #21252d;--line: #2c313b;--text: #e8eaee;--text-dim: #9aa1ad;--accent: #38bdf8;--accent-dim: #1d5c78;--danger: #f0605d;--radius: 12px}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}[hidden]{display:none!important}html,body{height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,PingFang TC,Noto Sans TC,system-ui,sans-serif;font-size:15px}.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:12px;padding:10px 14px 8px;background:#101216eb;backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.brand{font-weight:700;font-size:17px;letter-spacing:.5px}.brand-sub{font-weight:400;font-size:12px;color:var(--text-dim);margin-left:2px}.mode-tabs{display:flex;gap:4px;margin-left:auto;background:var(--panel);border-radius:999px;padding:3px}.tab{border:0;background:transparent;color:var(--text-dim);padding:7px 12px;border-radius:999px;font-size:13px;cursor:pointer}.tab.active{background:var(--accent);color:#06222f;font-weight:600}.app{max-width:760px;margin:0 auto}.stage{position:sticky;top:49px;z-index:20;background:var(--bg);border-bottom:1px solid var(--line);padding:10px 14px 8px}.canvas-wrap{position:relative;background:repeating-conic-gradient(#181b21 0% 25%,#14161b 0% 50%) 0 0 / 20px 20px;border:1px solid var(--line);border-radius:var(--radius);min-height:160px;max-height:46vh;display:flex;align-items:center;justify-content:center;overflow:hidden;touch-action:none}#preview{max-width:100%;max-height:46vh;display:block}#preview.mosaic-cursor{cursor:crosshair}.empty-hint{text-align:center;padding:34px 16px;color:var(--text-dim);width:100%}.empty-hint p{margin-bottom:14px}.privacy{font-size:12px;color:var(--text-dim);margin-top:14px}.thumbs-bar{display:flex;gap:8px;align-items:center;margin-top:8px}.thumbs{display:flex;gap:8px;overflow-x:auto;flex:1;padding:2px;scrollbar-width:thin}.thumb{position:relative;flex:0 0 auto;width:52px;height:68px;border-radius:8px;overflow:hidden;border:2px solid transparent;background:var(--panel-2);cursor:grab;user-select:none;touch-action:none}.thumb img{width:100%;height:100%;object-fit:cover;pointer-events:none}.thumb.current{border-color:var(--accent)}.thumb.dragging{opacity:.4}.thumb .ord{position:absolute;left:3px;top:3px;background:#000000a6;color:#fff;font-size:10px;border-radius:4px;padding:1px 4px}.thumb .ck{position:absolute;right:3px;top:3px;width:18px;height:18px;border-radius:50%;border:2px solid #fff;background:#0006;display:none;align-items:center;justify-content:center;font-size:11px;color:#fff}.select-mode .thumb .ck{display:flex}.thumb.checked .ck{background:var(--accent);border-color:var(--accent);color:#06222f}.thumb-add,.thumb-tool{flex:0 0 auto;width:40px;height:68px;border-radius:8px;border:1px dashed var(--line);background:transparent;color:var(--text-dim);font-size:18px;cursor:pointer}.batch-bar{display:flex;gap:10px;align-items:center;margin-top:8px}.batch-count{color:var(--text-dim);font-size:13px;flex:1;text-align:center}.controls{padding:14px 14px 60px;display:flex;flex-direction:column;gap:14px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;gap:12px}.panel-title{font-size:13px;font-weight:600;color:var(--text-dim)}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.hint{font-size:12px;color:var(--text-dim)}.btn{border:1px solid var(--line);background:var(--panel-2);color:var(--text);border-radius:10px;padding:9px 14px;font-size:14px;cursor:pointer}.btn:active{transform:scale(.97)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#06222f;font-weight:600}.btn.ghost{background:transparent}.btn.danger{background:transparent;border-color:var(--danger);color:var(--danger)}.btn.big{padding:13px;font-size:16px}.btn.on{border-color:var(--accent);color:var(--accent)}.select{background:var(--panel-2);color:var(--text);border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:14px}.field{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text)}.field input[type=range]{flex:1;accent-color:var(--accent)}.field input[type=color]{width:42px;height:30px;border:1px solid var(--line);border-radius:8px;background:var(--panel-2);padding:2px}.field output{min-width:2.2em;text-align:right;color:var(--text-dim);font-size:13px}.check{display:flex;align-items:center;gap:8px;font-size:14px}.check input{accent-color:var(--accent);width:17px;height:17px}.crop-editor-wrap{position:relative}.crop-editor{width:100%;height:220px;display:block;background:#0c0e11;border:1px solid var(--line);border-radius:10px;touch-action:none}.crop-editor-wrap .hint{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none}.crop-editor-wrap .hint:empty,.crop-editor-wrap .hint[hidden]{display:none}.layout-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.layout-btn{aspect-ratio:1;border-radius:10px;border:1px solid var(--line);background:var(--panel-2);cursor:pointer;padding:6px}.layout-btn.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.layout-btn svg{width:100%;height:100%}.layout-btn rect{fill:#3a414d}.layout-btn.active rect{fill:var(--accent)}.ratio-row{display:flex;gap:8px;flex-wrap:wrap}.chip{border:1px solid var(--line);background:var(--panel-2);color:var(--text-dim);border-radius:999px;padding:7px 14px;font-size:13px;cursor:pointer}.chip.active{border-color:var(--accent);color:var(--accent)}.footer-note{text-align:center}.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%);background:var(--panel-2);border:1px solid var(--line);color:var(--text);border-radius:10px;padding:10px 18px;font-size:14px;z-index:100;max-width:90vw;text-align:center;box-shadow:0 6px 24px #00000080}@media(min-width:700px){.stage{top:53px}.canvas-wrap,#preview{max-height:52vh}}