:root{--candy:#2f7d78;--candy-deep:#175e59;--peach:#e46f4f;--mint:#3cae9f;--lavender:#5d6fa8;--lemon:#d6a83d;--bg:#f5f7f8;--bg-tint:#eef3f4;--card:#fff;--ink:#4f5b62;--ink-strong:#1f2d35;--ink-soft:#7e8b93;--line:#dce5e8;--line-soft:#edf2f4;--radius:8px;--radius-lg:10px;--radius-pill:8px;--shadow-sm:0 1px 2px #0f172a0f;--shadow:0 8px 24px #0f172a12;--shadow-pop:0 4px 12px #2f7d782e;--grad-candy:#27746f;--grad-cool:#4f607f;--font:"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI Rounded", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;min-height:100vh;line-height:1.55;overflow-x:hidden}.app{z-index:1;flex-direction:column;height:100svh;display:flex;position:relative}.app-header{border-bottom:1px solid var(--line);z-index:100;box-shadow:var(--shadow-sm);background:#fff;padding:12px 24px;position:sticky;top:0}.header-content{justify-content:space-between;align-items:center;gap:18px;max-width:1440px;margin:0 auto;display:flex}.header-top{margin-bottom:0}.app-title{letter-spacing:0;color:var(--ink-strong);align-items:center;gap:8px;font-size:22px;font-weight:800;display:inline-flex}.app-title:before{content:"";background:linear-gradient(135deg, var(--candy), var(--peach));border-radius:3px;width:12px;height:12px;box-shadow:0 0 0 4px #2f7d781f}.app-subtitle{color:var(--ink-soft);margin-top:3px;font-size:13px}.tab-nav{background:var(--bg-tint);border-radius:var(--radius);border:1px solid var(--line);gap:5px;max-width:440px;padding:5px;display:flex}.tab-btn{color:var(--ink-soft);cursor:pointer;background:0 0;border:none;border-radius:6px;flex:1;min-height:40px;padding:9px 18px;font-family:inherit;font-size:14px;font-weight:750;transition:all .25s}.tab-btn:hover{color:var(--candy-deep)}.tab-btn.active{background:var(--card);color:var(--candy-deep);box-shadow:var(--shadow-sm)}.app-main{flex:1;gap:18px;width:100%;max-width:1440px;margin:0 auto;padding:18px 22px 22px;display:flex;overflow:hidden}.sidebar{flex-direction:column;flex-shrink:0;gap:12px;width:340px;max-height:calc(100svh - 96px);padding-right:4px;display:flex;overflow-y:auto}.main-area{background:var(--card);border-radius:var(--radius-lg);min-width:0;box-shadow:var(--shadow);border:1px solid var(--line);flex:1;justify-content:stretch;align-items:stretch;display:flex;position:relative;overflow:hidden}.uploader-card,.control-panel,.color-palette{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid var(--line)}.uploader-card{padding:14px}.upload-zone{border-radius:var(--radius);text-align:center;cursor:pointer;background:#f9fbfb;border:1.5px dashed #b8c7cc;padding:24px 16px;transition:border-color .25s,background .25s,transform .15s}.upload-zone:hover,.upload-zone.dragging{border-color:var(--candy);background:#eef8f6;transform:translateY(-1px)}.upload-zone.has-preview{padding:12px}.upload-icon{color:var(--candy);margin-bottom:10px}.upload-text{color:var(--ink-strong);font-size:15px;font-weight:700}.upload-formats{color:var(--ink-soft);margin-top:6px;font-size:12px}.preview-wrapper{flex-direction:column;align-items:center;gap:8px;display:flex}.preview-img{object-fit:contain;max-width:100%;max-height:170px;box-shadow:var(--shadow-sm);border-radius:6px}.preview-hint{color:var(--ink-soft);font-size:12px}.control-panel{flex-direction:column;gap:16px;padding:16px;display:flex}.control-group{flex-direction:column;gap:9px;display:flex}.control-label{color:var(--ink-strong);font-size:13px;font-weight:800}.control-label strong{color:var(--candy-deep)}.control-label-row{justify-content:space-between;align-items:center;gap:12px;display:flex}.compact-number-input{border:1px solid var(--line);width:72px;min-height:34px;color:var(--ink-strong);font:inherit;text-align:right;background:#fff;border-radius:6px;padding:5px 8px;font-size:13px;font-weight:700}.compact-number-input:focus{border-color:var(--candy);outline:3px solid #2f7d7824}.control-select,.size-input-group input{border:1px solid var(--line);border-radius:var(--radius);width:100%;color:var(--ink-strong);cursor:pointer;background:#fbfcfd;outline:none;padding:11px 14px;font-family:inherit;font-size:14px;transition:border-color .2s,box-shadow .2s}.control-select:focus,.size-input-group input:focus{border-color:var(--candy);box-shadow:0 0 0 3px #2f7d7824}.custom-size-inputs{align-items:flex-end;gap:8px;margin-top:4px;display:flex}.size-input-group{flex-direction:column;flex:1;gap:4px;display:flex}.size-input-group label{color:var(--ink-soft);font-size:12px}.control-hint{color:var(--ink-soft);margin:2px 0 0;font-size:12px;line-height:1.5}.segmented-control{background:var(--bg-tint);border:1px solid var(--line);border-radius:var(--radius);grid-auto-columns:1fr;grid-auto-flow:column;gap:3px;padding:3px;display:grid}.segmented-control button{min-width:0;min-height:36px;color:var(--ink-soft);font:inherit;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:5px;padding:7px 8px;font-size:12px;font-weight:700}.segmented-control button:hover{color:var(--ink-strong)}.segmented-control button.active{color:var(--candy-deep);box-shadow:var(--shadow-sm);background:#fff;border-color:#cfdddf}.segmented-control button:focus-visible,.tab-btn:focus-visible,.generate-btn:focus-visible,.export-btn:focus-visible{outline-offset:2px;outline:3px solid #2f7d7838}.locked-setting{border-left:3px solid var(--candy);color:var(--ink);background:#f2f8f7;padding:10px 12px;font-size:12px;line-height:1.5}.board-planner{gap:10px}.board-count-badge{color:var(--candy-deep);background:#eaf5f3;border-radius:5px;padding:3px 7px;font-size:11px;font-weight:800}.board-preset-row{grid-template-columns:minmax(0,1fr) auto;gap:7px;display:grid}.board-preset-row .control-select{min-width:0;padding:8px 10px;font-size:13px}.board-clear-btn{border:1px solid var(--line);min-width:54px;color:var(--ink);font:inherit;cursor:pointer;background:#fff;border-radius:6px;font-size:12px;font-weight:700}.board-clear-btn:hover:not(:disabled){background:#f5f8f8;border-color:#c5d4d7}.board-clear-btn:disabled{color:#a5afb4;cursor:not-allowed}.board-slot-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:5px;width:100%;display:grid}.board-slot{aspect-ratio:1;color:#7d8a90;cursor:pointer;background:#f8fafb;border:1px dashed #c4d0d4;border-radius:4px;min-width:0;transition:border-color .14s,background-color .14s,box-shadow .14s;position:relative}.board-slot:hover{border-color:var(--candy);background:#eef7f5}.board-slot.active{background-color:#dcefeb;background-image:linear-gradient(#2f7d781f 1px,#0000 1px),linear-gradient(90deg,#2f7d781f 1px,#0000 1px);background-size:7px 7px;border-style:solid;border-color:#287c75;box-shadow:inset 0 0 0 2px #ffffff9e}.board-slot span{width:21px;height:21px;color:var(--candy-deep);background:#fff;border-radius:50%;place-items:center;font-size:11px;font-weight:850;display:grid;position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%);box-shadow:0 1px 3px #18403d2e}.board-slot:focus-visible,.board-clear-btn:focus-visible{outline-offset:2px;outline:3px solid #2f7d7838}.board-plan-summary{color:var(--ink);text-align:center;font-size:12px;font-weight:700}.board-plan-summary.empty{color:#b54738}.control-slider{appearance:none;border-radius:var(--radius-pill);background:linear-gradient(90deg,#2f7d7847,#e46f4f57);outline:none;width:100%;height:6px}.control-slider::-webkit-slider-thumb{appearance:none;background:var(--card);border:3px solid var(--candy);cursor:pointer;border-radius:50%;width:22px;height:22px;transition:transform .15s;box-shadow:0 2px 8px #2f7d7838}.control-slider::-webkit-slider-thumb:hover{transform:scale(1.18)}.control-slider::-moz-range-thumb{border:3px solid var(--candy);background:var(--card);cursor:pointer;border-radius:50%;width:22px;height:22px}.slider-labels{color:var(--ink-soft);justify-content:space-between;font-size:11px;display:flex}.generate-btn,.export-btn{color:#fff;border-radius:var(--radius);cursor:pointer;isolation:isolate;border:none;justify-content:center;align-items:center;gap:6px;width:100%;min-height:44px;padding:12px 14px;font-family:inherit;font-size:14px;font-weight:750;transition:transform .12s,box-shadow .2s,filter .2s;display:flex;position:relative;overflow:hidden}.generate-btn{background:var(--grad-candy);box-shadow:var(--shadow-pop)}.export-btn{background:var(--grad-cool);box-shadow:0 10px 22px #5d6fa82e}.generate-btn:hover:not(:disabled),.export-btn:hover:not(:disabled){filter:brightness(1.04);transform:translateY(-1px)}.generate-btn:active:not(:disabled),.export-btn:active:not(:disabled){transform:translateY(0)scale(.99)}.generate-btn:disabled,.export-btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.color-palette{padding:14px}.palette-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.palette-header h3{color:var(--ink-strong);font-size:15px;font-weight:800}.palette-header h3:before{content:""}.palette-count{color:var(--candy-deep);border-radius:var(--radius-pill);background:#edf7f5;border:1px solid #cce2dd;padding:3px 9px;font-size:12px;font-weight:700}.palette-meta{color:var(--ink-soft);margin:-4px 0 10px;font-size:12px}.pattern-summary{border:1px solid var(--line-soft);border-left:3px solid var(--candy);color:var(--ink-soft);background:#f7faf9;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 10px;margin:-3px 0 12px;padding:9px 10px;font-size:12px;display:grid}.pattern-summary strong{color:var(--ink-strong);text-align:right}.palette-list{flex-direction:column;gap:4px;max-height:400px;display:flex;overflow-y:auto}.palette-item{border-radius:7px;align-items:center;gap:9px;padding:7px 8px;font-size:13px;transition:background .15s,transform .15s;display:flex}.palette-item:hover{background:#f3f8f8}.color-swatch{border:2px solid #0000000f;border-radius:6px;flex-shrink:0;width:26px;height:26px;box-shadow:inset 0 0 0 1px #ffffff80}.color-code{color:var(--ink-strong);min-width:42px;font-weight:800}.color-name{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.color-count{color:var(--ink-soft);white-space:nowrap;font-size:12px}.palette-list::-webkit-scrollbar{width:8px;height:8px}.sidebar::-webkit-scrollbar{width:8px;height:8px}.canvas-scroll-area::-webkit-scrollbar{width:8px;height:8px}.palette-list::-webkit-scrollbar-thumb{border-radius:var(--radius-pill);background:#b8c7cc}.sidebar::-webkit-scrollbar-thumb{border-radius:var(--radius-pill);background:#b8c7cc}.canvas-scroll-area::-webkit-scrollbar-thumb{border-radius:var(--radius-pill);background:#b8c7cc}.palette-list::-webkit-scrollbar-thumb:hover{background:var(--candy)}.sidebar::-webkit-scrollbar-thumb:hover{background:var(--candy)}.canvas-scroll-area::-webkit-scrollbar-thumb:hover{background:var(--candy)}.bead-grid-container{flex-direction:column;width:100%;height:100%;display:flex;position:relative;overflow:hidden}.bead-grid-container canvas{display:block}.zoom-controls{border-bottom:1px solid var(--line);background:#f8fafb;flex-shrink:0;align-items:center;gap:6px;padding:8px 12px;display:flex}.zoom-controls button{border:1px solid var(--line);background:var(--card);cursor:pointer;min-width:34px;height:32px;color:var(--candy-deep);border-radius:7px;justify-content:center;align-items:center;padding:0 8px;font-family:inherit;font-size:15px;font-weight:700;transition:background .15s,border-color .15s;display:flex}.zoom-controls button:hover{border-color:var(--candy);background:#eef8f6}.view-mode-switch{border:1px solid var(--line);background:var(--bg-tint);border-radius:6px;gap:2px;margin-left:auto;padding:2px;display:flex}.zoom-controls .view-mode-switch button{background:0 0;border:0;min-width:46px;height:28px;padding:0 8px;font-size:12px}.zoom-controls .view-mode-switch button.active{background:var(--card);color:var(--candy-deep);box-shadow:var(--shadow-sm)}.zoom-text-btn{font-size:12px!important}.zoom-label{text-align:center;min-width:46px;color:var(--ink);font-size:12px;font-weight:700}.canvas-scroll-area{background:#fff;flex:1;display:flex;overflow:auto}.canvas-stage{margin:auto}.grid-tooltip{background:var(--card);color:var(--ink-strong);white-space:nowrap;pointer-events:none;z-index:10;box-shadow:var(--shadow);border:1px solid var(--line);border-radius:8px;padding:8px 14px;font-size:13px;font-weight:600;position:absolute}.pattern-editor-shell{width:100%;min-width:0;height:100%;position:relative}.pattern-toolbar-actions{align-items:center;gap:6px;margin-left:auto;display:flex}.pattern-toolbar-actions>button.active{color:#fff;background:var(--candy);border-color:var(--candy)}.pattern-toolbar-actions .view-mode-switch{margin-left:0}.pattern-edit-panel{z-index:20;border:1px solid var(--line);border-radius:var(--radius);background:#fff;flex-direction:column;gap:10px;width:min(340px,100% - 24px);max-height:calc(100% - 66px);padding:14px;display:flex;position:absolute;top:54px;right:12px;overflow:hidden;box-shadow:0 16px 40px #1c313733}.pattern-edit-header{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.pattern-edit-header>div{flex-direction:column;gap:2px;min-width:0;display:flex}.pattern-edit-header strong{color:var(--ink-strong);font-size:16px}.pattern-edit-header span{color:var(--ink-soft);text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.pattern-edit-header button,.pattern-history-actions button,.pattern-edit-scope button{border:1px solid var(--line);min-height:34px;color:var(--ink);cursor:pointer;background:#fff;border-radius:6px;padding:0 10px;font-family:inherit;font-weight:700}.pattern-history-actions{grid-template-columns:repeat(3,1fr);gap:6px;display:grid}.pattern-history-actions button:disabled,.pattern-edit-confirm:disabled{opacity:.42;cursor:not-allowed}.pattern-edit-scope{border:1px solid var(--line);background:var(--bg-tint);border-radius:7px;grid-template-columns:repeat(3,1fr);gap:3px;padding:3px;display:grid}.pattern-edit-scope button{background:0 0;border-color:#0000;padding:0 5px;font-size:12px}.pattern-edit-scope button.active{border-color:var(--line);color:var(--candy-deep);box-shadow:var(--shadow-sm);background:#fff}.pattern-edit-count{color:var(--candy-deep);margin:-2px 0 0;font-size:12px;font-weight:750}.pattern-color-search{border:1px solid var(--line);width:100%;min-height:40px;color:var(--ink-strong);background:#fff;border-radius:7px;outline:none;padding:8px 11px;font-family:inherit;font-size:13px}.pattern-color-search:focus{border-color:var(--candy);box-shadow:0 0 0 3px #2f7d781f}.pattern-color-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px;min-height:120px;max-height:230px;padding-right:3px;display:grid;overflow-y:auto}.pattern-color-options button{border:1px solid var(--line);min-width:0;min-height:42px;color:var(--ink);text-align:left;cursor:pointer;background:#fff;border-radius:6px;grid-template-columns:24px auto 1fr;align-items:center;gap:6px;padding:5px 7px;display:grid}.pattern-color-options button.selected{border-color:var(--candy);box-shadow:inset 0 0 0 1px var(--candy);background:#eef8f6}.pattern-color-options button strong{font-size:12px}.pattern-color-options button>span:last-child{color:var(--ink-soft);text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.pattern-color-swatch{border:1px solid #26363d2e;border-radius:5px;width:24px;height:24px;box-shadow:inset 0 0 0 1px #fff9}.pattern-edit-confirm{flex-shrink:0}.empty-state{text-align:center;color:var(--ink-soft);margin:auto;padding:40px}.empty-state svg{stroke:var(--candy);opacity:.75;margin-bottom:16px}.empty-state p{font-size:15px}.empty-state:after{content:"";border-radius:var(--radius-pill);background:linear-gradient(90deg, var(--candy), var(--peach));width:56px;height:3px;margin:14px auto 0;display:block}.error-state{text-align:center;color:#b54738;margin:auto;padding:40px;font-size:15px;font-weight:600;line-height:1.6}.export-action{flex-direction:column;gap:6px;display:flex}.inline-error{color:#b54738;font-size:12px;line-height:1.45}.loading-state{text-align:center;color:var(--ink);margin:auto;padding:40px}.bead-loader{justify-content:center;gap:10px;margin:0 auto 18px;display:flex}.bead-loader span{border-radius:50%;width:16px;height:16px;animation:.9s ease-in-out infinite beadPulse}.bead-loader span:first-child{background:var(--candy);animation-delay:0s}.bead-loader span:nth-child(2){background:var(--candy);animation-delay:.14s}.bead-loader span:nth-child(3){background:var(--candy);animation-delay:.28s}@keyframes beadPulse{0%,to{opacity:.35;transform:scale(.82)}50%{opacity:1;transform:scale(1)}}.loading-state p{font-size:15px;font-weight:600}@media (width<=1024px){.app-main{gap:18px;padding:18px}.sidebar{width:300px}}@media (width<=900px){.app{height:auto;min-height:100svh}.app-main{flex-direction:column;gap:16px;padding:16px;overflow:visible}.sidebar{width:100%;max-height:none;padding-right:0;overflow-y:visible}.main-area{height:70svh;overflow:hidden}}@media (width<=768px){.app-header{padding:12px 16px}.header-content{flex-direction:column;align-items:stretch;gap:10px}.app-title{font-size:20px}.app-main{gap:14px;padding:14px}.tab-nav{max-width:100%}.control-panel{padding:18px}.palette-list{max-height:320px}}@media (width<=600px){.app-header{padding:10px 14px}.app-title{font-size:18px}.app-subtitle{display:none}.header-top{margin-bottom:0}.tab-nav{gap:3px;padding:4px}.tab-btn{padding:9px 12px;font-size:13px}.app-main{gap:12px;padding:12px}.uploader-card{padding:12px}.upload-zone{padding:20px 12px}.control-panel{gap:14px;padding:16px}.main-area{min-height:56vh}.palette-list{max-height:50vh}.pixel-art-palette{display:none}.pattern-edit-panel{width:auto;max-height:48%;padding:12px;inset:auto 8px 8px}.pattern-color-options{max-height:150px}}@media (width<=480px){.app-header{padding:9px 12px}.app-title{font-size:17px}.tab-btn{padding:8px;font-size:12px}.app-main{gap:10px;padding:10px}.upload-zone{padding:16px 10px}.upload-icon svg{width:38px;height:38px}.upload-text{font-size:14px}.preview-img{max-height:120px}.control-panel{gap:12px;padding:14px}.control-select{padding:10px 12px}.color-swatch{width:22px;height:22px}.color-code{min-width:34px}.generate-btn,.export-btn{min-height:50px}.zoom-controls button{min-width:40px;height:38px}.control-slider::-webkit-slider-thumb{width:28px;height:28px}.grid-tooltip{padding:6px 10px;font-size:12px}.zoom-controls{gap:4px;padding:7px 8px}.zoom-label{min-width:40px}.zoom-controls .view-mode-switch button{min-width:40px;padding:0 6px}.pattern-toolbar-actions{gap:3px}.pattern-toolbar-actions>button{min-width:42px;padding:0 6px;font-size:12px}.pattern-summary{grid-template-columns:1fr}.pattern-summary strong{text-align:left}}@media (hover:none) and (pointer:coarse){.zoom-controls button{min-width:40px;height:40px}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}