:root{--paper:#faf8f4;--ink:#302e38;--muted:#908b88;--line:#eae5de;--coral:#ec8d78;--coral-dark:#bd6450;--soft:#fae9e2;--mono:ui-monospace,SFMono-Regular,Menlo,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}button,input,select,a{-webkit-tap-highlight-color:transparent}button,input,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.35;cursor:default}button{color:inherit}a{color:inherit;text-decoration:none}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.icon-defs{position:absolute;width:0;height:0;overflow:hidden}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}[hidden]{display:none!important}
.mobile-shell{max-width:540px;margin:auto;padding:0 20px calc(120px + env(safe-area-inset-bottom))}.mobile-header{height:78px;padding-top:env(safe-area-inset-top);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:850;letter-spacing:-.5px}.brand-accent{color:var(--coral-dark)}.brand-mark{display:grid;width:27px;height:27px;grid-template-columns:1fr 1fr;gap:3px;transform:rotate(-8deg)}.brand-mark i{border:1.5px solid var(--ink);border-radius:3px;background:var(--coral)}.brand-mark i:nth-child(2){background:#efd086}.brand-mark i:nth-child(3){background:#93a8cd}.desktop-link{display:flex;align-items:center;gap:5px;min-height:44px;color:#96918c;font-size:11px}.desktop-link svg{width:17px}.mobile-intro{padding:27px 0 24px}.eyebrow,.section-label{font-family:var(--mono);font-size:8px;letter-spacing:1.7px;color:var(--coral-dark)}.mobile-intro h1{font-size:29px;line-height:1.3;letter-spacing:-1.6px;margin:12px 0 9px;font-weight:850}.mobile-intro h1 span{color:var(--coral-dark)}.mobile-intro p{font-size:12px;line-height:1.8;margin:0;color:#96908a}
.upload-card{position:relative;display:flex;align-items:center;gap:12px;min-height:94px;padding:16px;background:white;border:1px dashed #d9cbc0;border-radius:18px}.upload-card>input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.upload-art{display:grid;place-items:center;width:45px;height:45px;flex-shrink:0;border-radius:14px;background:var(--soft);color:var(--coral-dark)}.upload-art svg{width:23px;height:23px}.upload-copy{flex:1;min-width:0}.upload-copy strong{font-size:13px;display:block;line-height:1.6}.upload-copy>span{font-size:10px;color:#a29a92;display:block;margin-top:5px}.upload-button{position:relative;display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--line);border-radius:13px;background:white;color:var(--coral-dark)}.source-note{display:flex;align-items:center;justify-content:space-between;gap:5px;font-size:9px;color:#9a958c;padding:5px 2px 14px}.source-note>span{display:flex;align-items:center;gap:5px}.source-note i{width:5px;height:5px;border-radius:50%;background:#8baa96}.source-note button{border:0;background:none;font-size:10px;min-height:40px;color:#887c73;padding:0}
.preview-panel{min-width:0;background:white;border:1px solid var(--line);border-radius:22px;padding:17px 13px 12px;box-shadow:0 8px 25px #3c302505}.preview-head{display:flex;align-items:center;justify-content:space-between;gap:7px;padding:0 3px 15px}.section-label{font-size:7px;letter-spacing:1.5px;color:#a59c92}.preview-head h2{display:flex;align-items:center;gap:7px;font-size:16px;letter-spacing:-.6px;margin:7px 0 0}.live-dot{display:flex;align-items:center;gap:4px;font-size:8px;font-weight:500;color:#68997c}.live-dot:before{content:"";width:4px;height:4px;border-radius:50%;background:#86b69b}.soft-button{display:flex;align-items:center;gap:5px;padding:0 9px;min-height:44px;white-space:nowrap;font-size:10px;font-weight:600;color:#7a7068;border:0;border-radius:11px;background:#f7f4ef}.soft-button svg{width:15px}.board-wrap{border:1px solid var(--line);border-radius:13px;overflow:hidden;background:#f7f5f1}.board-meta{display:flex;justify-content:space-between;gap:10px;padding:10px 12px;font:8px var(--mono);color:#b1a79c}.board-meta span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.board-meta span:last-child{white-space:nowrap}.board-viewport{width:100%;height:auto;aspect-ratio:1;overflow:auto;overscroll-behavior:contain;touch-action:pan-x pan-y;scrollbar-width:thin;background:#fffdf8}#previewCanvas{display:block;width:100%;height:auto;max-width:none;margin:auto;border:1px solid #ddd5c9;image-rendering:pixelated;outline-offset:-3px}#previewCanvas.erasing{touch-action:none;cursor:crosshair}#previewCanvas:focus-visible{outline:2px solid var(--coral)}.canvas-tools{display:flex;align-items:center;justify-content:space-between;gap:4px;padding:8px 0}.zoom-control,.display-tools,.edit-history{display:flex;align-items:center;gap:2px}.icon-button{display:grid;place-items:center;flex-shrink:0;width:44px;height:44px;border:0;border-radius:10px;background:none;color:#8e8378}.icon-button svg{width:18px;height:18px}.icon-button.active,.edit-button.active{color:var(--coral-dark);background:var(--soft)}#zoomLabel{min-width:45px;min-height:44px;border:0;background:transparent;color:#8d8177;font:10px var(--mono)}.code-control{display:flex;align-items:center;justify-content:center;min-height:44px;min-width:46px;font-size:11px;color:#9a8d81;position:relative;border-radius:10px}.code-control input{position:absolute;inset:0;width:100%;height:100%;opacity:0;margin:0}.code-control:has(input:checked){background:var(--soft);color:var(--coral-dark)}.edit-toolbar{display:flex;align-items:center;gap:6px;padding:7px;border:1px solid var(--line);border-radius:12px}.edit-button{display:flex;align-items:center;justify-content:center;gap:5px;min-height:44px;padding:0 10px;border:0;border-radius:8px;background:#f7f4ef;color:#82766c;font-size:11px}.edit-button svg{width:17px}.brush-control select{width:65px;min-height:44px;padding:5px;border:1px solid var(--line);border-radius:8px;background:white;font-size:11px;color:#82766c}.edit-history{margin-left:auto}.editor-hint{font-size:9px;line-height:1.8;color:#a19990;margin:9px 3px;min-height:30px}.preview-foot{display:flex;justify-content:space-around;gap:5px;border-top:1px solid #f1ede8;padding:14px 0 8px;color:#aaa095;font-size:10px}.preview-foot strong{font:600 12px var(--mono);color:var(--ink)}.pattern-status{font-size:9px;line-height:1.8;color:#aaa095;text-align:center;margin:4px 0}.gesture-tip{text-align:center;font-size:9px;line-height:1.8;color:#b0a69b;margin:13px 0 23px}.mini-guide{display:flex;align-items:center;gap:13px;padding:17px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.guide-icon{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;font-size:23px;color:var(--coral-dark);background:#f3e9dc}.mini-guide strong{font-size:11px;font-weight:600;color:#8a7c6e}.mini-guide p{font-size:9px;color:#aa9d90;line-height:1.8;margin:5px 0 0}.mobile-footer{text-align:center;padding:25px 0 0;font-size:9px;letter-spacing:1px;color:#b4a99d}.mobile-footer span{margin:0 7px}
.bottom-dock{position:fixed;bottom:0;left:50%;transform:translateX(-50%);z-index:10;display:flex;gap:12px;width:100%;max-width:540px;padding:13px 20px calc(13px + env(safe-area-inset-bottom));background:#faf8f4f5;backdrop-filter:blur(16px);border-top:1px solid var(--line)}.dock-settings{display:flex;align-items:center;justify-content:center;gap:7px;min-width:115px;min-height:50px;padding:0 13px;border:1px solid #e6ddd1;border-radius:13px;background:#fffdf9;font-size:12px;font-weight:600}.dock-settings svg{width:18px}.primary-button,.secondary-button{display:flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:13px 16px;border-radius:13px;font-size:13px;font-weight:650;border:0}.primary-button{background:var(--ink);color:white}.secondary-button{border:1px solid var(--line);color:#77695c;background:white}.bottom-dock .primary-button{flex:1}.primary-button svg,.secondary-button svg{width:18px}
.bottom-sheet{position:fixed;inset:auto 0 0;width:100%;max-width:540px;max-height:calc(100dvh - env(safe-area-inset-top) - 20px);margin:0 auto;padding:0;border:0;border-radius:25px 25px 0 0;background:#fffdf9;color:var(--ink);box-shadow:0 -15px 70px #28233018;overflow:hidden}.bottom-sheet[open]{display:flex;flex-direction:column}.bottom-sheet::backdrop{background:#27232b66;backdrop-filter:blur(3px)}.sheet-handle{flex-shrink:0;width:32px;height:4px;margin:10px auto 0;border-radius:5px;background:#ded6cc}.sheet-head{display:flex;align-items:center;justify-content:space-between;flex-shrink:0;gap:10px;padding:10px 22px 17px}.sheet-head h2{font-size:22px;margin:7px 0 0;letter-spacing:-.7px}.sheet-body{overflow-y:auto;min-height:0;overscroll-behavior:contain;padding:0 22px 20px}.sheet-actions{display:flex;gap:9px;flex-shrink:0;padding:12px 22px calc(15px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:#fffdf9}.sheet-actions>button{flex:1}.control-label-row{display:flex;justify-content:space-between;gap:10px;font-size:13px;font-weight:600}.control-label-row output{font:12px var(--mono);color:var(--coral-dark)}input[type=range]{width:100%;height:44px;accent-color:var(--coral-dark);margin:5px 0;touch-action:pan-y}.range-hints{display:flex;justify-content:space-between;gap:10px;color:#b1a497;font-size:10px}.grid-presets{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:18px}.grid-presets button{min-height:44px;border:1px solid var(--line);border-radius:10px;background:white;font-size:12px;color:#8d7f71}.grid-presets button.selected{border-color:#e7b4a3;background:var(--soft);color:var(--coral-dark)}.control-note{font-size:10px;line-height:1.8;color:#aa9a8c;margin:11px 0 20px}.palette-control{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:0 0 16px;margin-top:22px;font-size:13px;font-weight:600}.palette-control select{min-height:44px;padding:9px;border:1px solid var(--line);border-radius:10px;background:white;color:#8c7a6a;font-size:12px}.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:77px;border-bottom:1px solid #f0eae2}.toggle-row>div{display:flex;flex-direction:column;gap:6px}.toggle-row strong{font-size:13px;font-weight:600}.toggle-row>div>span{font-size:10px;color:#af9e8f}.switch{position:relative;display:grid;place-items:center;width:48px;min-height:44px;flex-shrink:0}.switch input{position:absolute;inset:0;z-index:1;margin:0;opacity:0;cursor:pointer;width:100%;height:100%}.switch span{width:39px;height:23px;border-radius:20px;background:#e7dfd6;transition:background .2s}.switch span:after{content:"";display:block;width:17px;height:17px;margin:3px;border-radius:50%;background:white;box-shadow:0 1px 3px #0001;transition:transform .2s}.switch input:checked+span{background:var(--coral)}.switch input:checked+span:after{transform:translateX(16px)}.tolerance-control{padding-top:20px}.text-button{display:flex;align-items:center;justify-content:center;gap:6px;min-height:48px;width:100%;padding:10px;border:0;background:transparent;color:#ac9c8c;font-size:11px;margin-top:13px}.text-button svg{width:15px}.color-list{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.color-item{display:flex;align-items:center;gap:7px;padding:14px 0;border-bottom:1px solid var(--line);min-width:0}.color-swatch{width:31px;height:31px;border-radius:9px;border:1px solid #0001;flex-shrink:0}.color-info{flex:1;min-width:0}.color-code{display:block;font:11px var(--mono)}.color-name{display:block;font:8px var(--mono);color:#b3a393;margin-top:5px}.color-count{font:10px var(--mono);white-space:nowrap;color:#9d8875}.palette-note{font-size:10px;line-height:1.9;color:#b3a393;margin-top:22px}.palette-note a{color:var(--coral-dark);text-decoration:underline}.export-hint{font-size:11px;line-height:1.8;color:#a08c7b;margin:0 0 15px}.export-preview{padding:9px;border:1px solid var(--line);border-radius:12px;background:#fff}.export-preview img{display:block;width:100%;height:auto;-webkit-touch-callout:default}.export-actions .primary-button{flex:1}.export-actions>button{flex:0 1 auto}.toast{position:fixed;z-index:50;left:50%;bottom:calc(95px + env(safe-area-inset-bottom));transform:translate(-50%,10px);opacity:0;pointer-events:none;max-width:calc(100% - 40px);padding:13px 18px;background:var(--ink);color:white;border-radius:12px;font-size:12px;line-height:1.6;transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}body:has(dialog[open]){overflow:hidden}
@media(max-width:360px){.mobile-shell{padding-left:13px;padding-right:13px}.mobile-intro h1{font-size:26px}.preview-panel{padding-left:10px;padding-right:10px}.upload-card{gap:9px;padding:12px}.upload-copy strong{font-size:12px}.preview-head h2{font-size:15px}.soft-button{padding:0 7px;font-size:9px}.color-list{column-gap:10px}.color-count{font-size:9px}.edit-button{padding:0 8px}.bottom-dock{padding-left:13px;padding-right:13px}.sheet-body{padding-left:18px;padding-right:18px}.sheet-head{padding-left:18px;padding-right:18px}}
.standalone-help{font-size:10px;line-height:1.8;color:#9b8c7e;text-align:center;margin:20px 0 0}.install-button{display:block;min-height:44px;padding:10px 18px;margin:12px auto 0;border:1px solid var(--line);border-radius:12px;background:white;color:var(--coral-dark);font-size:12px}
/* Use the visible viewport as well as a vh fallback for mobile browser toolbars. */
.bottom-sheet{--sheet-height:calc(var(--mobile-viewport-height,100vh) - env(safe-area-inset-top,0px) - 20px);bottom:var(--mobile-viewport-bottom,0px);max-height:calc(100vh - 20px);max-height:var(--sheet-height);overscroll-behavior:contain}
#settingsDialog{height:var(--sheet-height)}
.sheet-body{flex:1 1 auto;min-width:0;touch-action:pan-y pinch-zoom;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:#d9cbc0 transparent}
body.sheet-open{overflow:hidden}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}