:root{font-family:system-ui,"Microsoft YaHei",sans-serif;color:#203c3f;background:#edf2f0;line-height:1.6}*{box-sizing:border-box}body{margin:0}header{padding:24px 4vw;background:#163c40;color:#fff}header a{color:#d0eeea}header h1{font-size:28px;margin:12px 0 4px}header p{margin:0;color:#bdd9d5}.pill{margin-left:18px;border:1px solid #6e9394;border-radius:30px;padding:3px 10px;font-size:12px}main{max-width:1500px;margin:auto;padding:22px 3vw}.panel{background:white;border:1px solid #d4e1dd;border-radius:12px;padding:20px;margin-bottom:18px}.setup{display:grid;grid-template-columns:1fr 1.3fr 1fr;gap:22px}.setup label{display:block;font-weight:700;margin-bottom:8px}button,input,select{font:inherit}button,select,input[type=file]{border:1px solid #b6c9c2;border-radius:6px;padding:9px;background:#fff;color:#203c3f;max-width:100%}button{cursor:pointer}button:hover{border-color:#147968}button:disabled{opacity:.48;cursor:not-allowed}.primary{background:#14715e;color:white;border-color:#14715e}button:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #69b9a8;outline-offset:2px}.actions{display:flex;flex-direction:column;gap:9px}.hint{font-size:12px;color:#657e7c;margin:8px 0}.workspace{display:grid;grid-template-columns:270px 1fr;gap:18px}.workspace aside canvas{display:block;width:100%;height:auto;background:#e4e8e6;border-radius:8px;margin:14px 0;cursor:crosshair}.workspace aside h2{margin:0}.edit-title{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px}h2{font-size:19px;margin:0 0 8px}.eyebrow{font-size:12px;color:#54847b}.checker-choice{font-size:12px}.checker{background-color:#f8faf9;background-image:linear-gradient(45deg,#dce4e1 25%,transparent 25%),linear-gradient(-45deg,#dce4e1 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#dce4e1 75%),linear-gradient(-45deg,transparent 75%,#dce4e1 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}.stage{min-height:300px;display:flex;align-items:center;justify-content:center;padding:15px;position:relative;border:1px solid #d2dfda;border-radius:8px;overflow:hidden}#edit-canvas{display:block;max-width:100%;max-height:380px;border:1px dashed #819c94;touch-action:none;cursor:grab}#edit-canvas:active{cursor:grabbing}#empty-stage{position:absolute;padding:10px;background:#ffffffe8;border-radius:6px;font-size:14px}.sliders{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:15px;margin:16px 0}.sliders label{display:flex;flex-wrap:wrap;align-items:center;gap:7px;font-size:12px}.sliders input{width:100%;accent-color:#14715e}.edit-buttons{display:flex;flex-wrap:wrap;gap:8px}.edit-buttons button{font-size:12px}details summary{cursor:pointer;font-weight:600}#frame-options{margin-top:16px;border-top:1px solid #dce7e2;padding-top:12px}#frame-options label{display:inline-block;margin-right:12px}#outputs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.output{min-width:0;padding:12px;border:1px solid #d3dfdb;border-radius:8px;background:#fafcfb}.output.selected{border:2px solid #14715e;padding:11px;background:#f2faf6}.output button{border:0;padding:0;width:100%;text-align:left;background:transparent}.output h3{margin:0;font-size:14px}.output code{font-size:11px;overflow-wrap:anywhere;display:block}.output .new-preview{height:175px;display:flex;justify-content:center;align-items:center;border-radius:6px;margin:12px 0}.output canvas.large{max-width:100%;max-height:170px;object-fit:contain;display:block}.output img{max-height:70px;max-width:100%;object-fit:contain}.output .actual{overflow:auto;max-height:145px;background:#f1f4f2;padding:6px;border-radius:4px}.output canvas.actual-size{display:block}#message{padding:10px 14px;border-left:3px solid #378e78;background:#e1efe8;color:#245c4d}#message.warning{background:#fff3d9;border-color:#b98428;color:#715113}input[type=range]{cursor:pointer}body.busy{cursor:progress}@media(max-width:1000px){.setup{grid-template-columns:1fr 1fr}.setup .actions{grid-column:1/-1;display:flex;flex-direction:row;flex-wrap:wrap}.workspace{grid-template-columns:210px 1fr}#outputs{grid-template-columns:repeat(3,1fr)}}@media(max-width:680px){header h1{font-size:22px}main{padding:12px}.panel{padding:14px}.setup{grid-template-columns:1fr}.workspace{grid-template-columns:1fr}.workspace aside{display:none}.sliders{grid-template-columns:1fr}.edit-title{flex-wrap:wrap}#outputs{grid-template-columns:repeat(2,minmax(0,1fr))}.stage{min-height:270px}}

.pixel-tools{display:flex;flex-wrap:wrap;gap:12px;align-items:center;padding:10px 0;font-size:12px}.pixel-tools strong{color:#14715e}.pixel-tools input{accent-color:#14715e}.stage.native{overflow:auto;justify-content:flex-start}#stage.native canvas{max-width:none;max-height:none;flex-shrink:0}.native-comparison{display:flex;gap:12px;overflow:auto;max-height:250px}.native-comparison>div{flex-shrink:0}.native-comparison img{max-width:none;max-height:none;display:block}.size-result{font-size:11px;color:#14715e;margin:8px 0}

/* A scroll viewport must clip native-size pixels, never stretch its flex children. */
.native-comparison{align-items:flex-start}
.native-comparison>img,.native-comparison>canvas{flex:none;align-self:flex-start;width:auto;height:auto;max-width:none;max-height:none;object-fit:contain}