:root{--bg: #f5f1e8;--bg-soft: #efe9dc;--surface: #ffffff;--surface-2: #faf7f0;--surface-3: #f3ede0;--border: #e6dfd1;--border-strong: #d6cdb9;--text: #3c3831;--text-dim: #8b8474;--text-faint: #b5ad9d;--accent: #a9744f;--accent-deep: #8a5a3b;--accent-soft: #f1e5d3;--accent-border: #dcbf9e;--chip: #efe9dc;--checker-a: #f1ebdd;--checker-b: #faf7f0;--shadow: 0 1px 2px rgba(96, 74, 42, .05), 0 10px 28px rgba(96, 74, 42, .09);--shadow-sm: 0 1px 3px rgba(96, 74, 42, .07);--radius: 14px;--radius-sm: 9px;font-size:15px}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{background:radial-gradient(1100px 500px at 85% -10%,rgba(196,168,130,.18),transparent 60%),radial-gradient(900px 480px at -5% 110%,rgba(160,150,130,.14),transparent 60%),var(--bg);color:var(--text);font-family:Segoe UI,PingFang SC,Microsoft YaHei,system-ui,sans-serif;-webkit-font-smoothing:antialiased}.app{max-width:1560px;margin:0 auto;padding:20px 26px 46px;display:flex;flex-direction:column;min-height:100vh}.app-header{display:flex;align-items:center;gap:16px;padding:8px 6px 6px}.logo{display:grid;grid-template-columns:repeat(2,15px);gap:4px;padding:7px;background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-sm)}.logo-block{width:15px;height:15px;border-radius:4px}.b1{background:#c9b08c}.b2{background:#a9744f}.b3{background:#8f8a7f}.b4{background:#e3d3b8}.title-block{flex:1;min-width:0}.app-header h1{font-size:23px;font-weight:800;letter-spacing:.2px;color:var(--text)}.subtitle{color:var(--text-dim);font-size:13px;margin-top:2px}.header-badge{font-size:12px;color:var(--accent-deep);background:var(--accent-soft);border:1px solid var(--accent-border);border-radius:999px;padding:6px 14px;white-space:nowrap;font-weight:600}.steps{display:flex;align-items:center;gap:8px;margin:16px 4px 18px;flex-wrap:wrap}.step{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-faint);padding:7px 13px;border-radius:999px;background:var(--surface);border:1px solid var(--border);transition:all .18s}.step-num{width:19px;height:19px;border-radius:50%;background:var(--chip);color:var(--text-dim);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;flex:none}.step.active{color:var(--accent-deep);border-color:var(--accent-border);background:var(--accent-soft);font-weight:600}.step.active .step-num{background:var(--accent);color:#fff}.step-line{width:26px;height:1px;background:var(--border-strong)}.app-main{display:grid;grid-template-columns:330px minmax(300px,1fr) minmax(370px,1.2fr);gap:18px;flex:1;align-items:start}@media (max-width: 1180px){.app-main{grid-template-columns:1fr}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm);margin-bottom:18px}.card h3{font-size:14px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:9px;margin-bottom:14px}.card-badge{width:22px;height:22px;border-radius:7px;background:var(--accent-soft);border:1px solid var(--accent-border);color:var(--accent-deep);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;flex:none}.mode-toggle{display:flex;gap:8px;margin-bottom:12px}.view-slots{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.view-slot{background:var(--surface-2);border:1.5px dashed var(--border-strong);border-radius:var(--radius-sm);padding:10px 6px;text-align:center;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px;min-height:78px;justify-content:center;transition:all .14s;position:relative}.view-slot img{max-width:100%;max-height:52px;object-fit:contain;border-radius:4px}.view-slot-hint{font-size:10.5px;color:var(--text-faint)}.view-tip{grid-column:1 / -1;font-size:11.5px;color:var(--text-dim);margin:2px 0 0}.page-nav{display:flex;gap:8px}.nav-btn{background:var(--surface);border:1px solid var(--border);color:var(--text-dim);border-radius:999px;padding:8px 16px;font-size:13px;cursor:pointer;transition:all .14s;font-weight:600}.nav-btn:hover{color:var(--text);border-color:var(--border-strong)}.nav-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.mv-page{margin-top:8px}.mv-grid{display:grid;grid-template-columns:330px minmax(320px,1fr) minmax(300px,1fr);gap:18px;align-items:start}@media (max-width: 1200px){.mv-grid{grid-template-columns:1fr}}.mv-card{margin-bottom:0}.mv-slots{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.mv-toolbar{margin:12px 0}.mv-viewer{height:auto}.preview-split{display:flex;flex-direction:column;gap:12px}.view-slot{background:var(--surface-2);border:1.5px dashed var(--border-strong);border-radius:var(--radius-sm);padding:10px 6px;text-align:center;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px;min-height:86px;justify-content:center;transition:all .14s;position:relative}.view-slot:hover{border-color:var(--accent);background:var(--accent-soft)}.view-slot.drag-over{border-style:solid;border-color:var(--accent);background:var(--accent-soft)}.view-slot.filled{border-style:solid;border-color:var(--accent-border)}.view-slot img{max-width:100%;max-height:56px;object-fit:contain;border-radius:4px}.view-slot-plus{font-size:20px;color:var(--text-faint);line-height:1}.view-slot-label{font-size:12px;color:var(--text-dim)}.view-slot.filled .view-slot-label{color:var(--accent-deep);font-weight:600}.view-slot-hint,.view-slot-dim{font-size:10.5px;color:var(--text-faint)}.view-slot-close{position:absolute;top:3px;right:3px;width:18px;height:18px;border-radius:50%;border:none;background:#00000073;color:#fff;font-size:10px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}.view-slot-close:hover{background:var(--accent2)}.view-tip{grid-column:1 / -1;font-size:11.5px;color:var(--text-dim);margin:4px 0 0}.mv-controls{margin-top:16px}.dropzone{border:2px dashed var(--border-strong);border-radius:var(--radius-sm);padding:30px 14px;text-align:center;cursor:pointer;transition:all .16s;color:var(--text-dim);display:flex;flex-direction:column;align-items:center;gap:7px;font-size:13.5px;-webkit-user-select:none;user-select:none;background:var(--surface-2)}.dropzone:hover,.dropzone.drag-over{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-deep)}.dropzone.drag-over{border-style:solid}.dropzone-icon{font-size:26px;filter:grayscale(.4)}.dropzone-hint{font-size:12px;opacity:.75}.dropzone.filled{padding:12px}.dropzone-image{display:flex;flex-direction:column;align-items:center;gap:8px}.dropzone-image img{max-width:100%;max-height:150px;object-fit:contain;border-radius:8px;background:var(--checker-a)}.dropzone-image span{font-size:12px;color:var(--text-dim)}.controls{display:flex;flex-direction:column;gap:13px}.control{display:flex;flex-direction:column;gap:6px}.control-label{font-size:12.5px;color:var(--text-dim)}.control-label b{color:var(--accent-deep)}.grid-presets{display:flex;gap:6px;flex-wrap:wrap}.grid-preset{flex:1;min-width:50px;background:var(--surface);border:1px solid var(--border);color:var(--text-dim);border-radius:8px;padding:6px 4px;font-size:12.5px;cursor:pointer;transition:all .13s;font-variant-numeric:tabular-nums}.grid-preset:hover{color:var(--text);border-color:var(--border-strong)}.grid-preset.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-deep);font-weight:700}.control select,.control textarea{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);padding:8px 11px;font-size:13px;font-family:inherit;outline:none;transition:border-color .14s}.control select:focus,.control textarea:focus{border-color:var(--accent)}.control textarea{resize:vertical}.slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:6px;border-radius:3px;background:var(--chip);outline:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:17px;height:17px;border-radius:50%;background:var(--accent);cursor:pointer;border:3px solid #fff;box-shadow:0 1px 4px #604a2a59;transition:transform .1s}.slider::-webkit-slider-thumb:hover{transform:scale(1.15)}.slider::-moz-range-thumb{width:13px;height:13px;border-radius:50%;background:var(--accent);cursor:pointer;border:3px solid #fff;box-shadow:0 1px 4px #604a2a59}.control.checkbox{flex-direction:row;align-items:center;gap:9px;font-size:13px;color:var(--text);cursor:pointer;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:9px 12px}.control.checkbox input{accent-color:var(--accent);width:16px;height:16px}.palette-swatches{display:flex;flex-wrap:wrap;gap:5px;align-items:center}.swatch{width:19px;height:19px;border-radius:5px;border:1px solid rgba(0,0,0,.12);cursor:default}.swatch-more{font-size:11px;color:var(--text-dim)}.preview-card{display:flex;flex-direction:column}.pixel-preview{background:repeating-conic-gradient(var(--checker-a) 0% 25%,var(--checker-b) 0% 50%) 0 0 / 22px 22px;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;min-height:140px;display:flex;align-items:center;justify-content:center}.pixel-preview canvas{display:block}.preview-info{font-size:12.5px;color:var(--text-dim);margin-top:12px;display:flex;align-items:center;gap:6px}.preview-actions{margin-top:12px}.empty-state{color:var(--text-faint);font-size:13px;text-align:center;padding:56px 10px}.voxel-card{display:flex;flex-direction:column}.viewer-toolbar{display:flex;gap:8px;margin:4px 0 12px;flex-wrap:wrap}.tool{background:var(--surface);border:1px solid var(--border);color:var(--text-dim);border-radius:var(--radius-sm);padding:7px 12px;font-size:12.5px;cursor:pointer;transition:all .14s}.tool:hover{color:var(--text);border-color:var(--border-strong)}.tool.active{color:#fff;background:var(--accent);border-color:var(--accent);font-weight:700}.viewer-wrap{position:relative;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border);background:var(--surface-2)}.voxel-viewport{width:100%;height:430px;display:block}.voxel-viewport canvas{display:block}.viewer-empty{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;color:var(--text-faint);font-size:13px;background:var(--surface-2);pointer-events:none}.export-card{margin-bottom:0}.export-section-title{font-size:12.5px;color:var(--text-dim);font-weight:600;margin:4px 0 9px}.export-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}@media (max-width: 480px){.export-grid{grid-template-columns:1fr}}.export-btn{background:var(--surface);border:1px solid var(--border);color:var(--text);border-radius:var(--radius-sm);padding:10px 11px;font-size:13px;cursor:pointer;transition:all .14s;text-align:center}.export-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent-deep);background:var(--accent-soft)}.export-btn:disabled{opacity:.38;cursor:not-allowed}.export-stats{font-size:12px;color:var(--text-dim);margin-top:13px}.app-footer{margin-top:30px;text-align:center;color:var(--text-faint);font-size:12px}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:5px}::-webkit-scrollbar-thumb:hover{background:#c4b99f}