:root{--paper:#fff;--grid:#e6ecf5;--wash:#f1f4f9;--rule:#c9d3e3;--ink:#1d2433;--ink-soft:#566076;--ink-faint:#6b7488;--hl:#ffe14d;--hl-deep:#ffd61f;--pen:#2a4a9a;--warn:#a3330f;--warn-bg:#fdeee6;--line:#1d2433;--radius:6px;--kai:"LXGW WenKai TC", "Kaiti TC", "BiauKai", "DFKai-SB", serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*{box-sizing:border-box}html,body{margin:0}body{background-color:var(--paper);background-image:linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);color:var(--ink);-webkit-font-smoothing:antialiased;background-size:24px 24px;font-family:Noto Sans TC,PingFang TC,Microsoft JhengHei,sans-serif;line-height:1.6}button,input{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}:focus-visible{outline:2px solid var(--pen);outline-offset:2px}.wrap{max-width:1120px;margin:0 auto;padding:0 16px}.site-header{padding:20px 0 8px}.site-header .wrap{justify-content:space-between;align-items:center;display:flex}.brand{font-family:var(--kai);color:var(--ink);font-size:18px;font-weight:700;text-decoration:none}.brand span{color:var(--ink-soft)}.hero{padding:24px 0}.hero h1{font-family:var(--kai);margin:0;font-size:clamp(32px,6.4vw,46px);line-height:1.25}.hero h1 mark{background:linear-gradient(transparent 55%, var(--hl) 55%);color:inherit;padding:0 2px}.hero p{color:var(--ink-soft);margin:12px 0 0;font-size:17px}.stamp{border:1.5px solid var(--pen);color:var(--pen);letter-spacing:.08em;border-radius:3px;margin-top:14px;padding:2px 10px;font-size:14px;font-weight:700;display:inline-block;transform:rotate(-3deg)}.app{padding-bottom:48px}.dropzone{border:1.5px dashed var(--ink-soft);border-radius:var(--radius);background:#fff;flex-direction:column;justify-content:center;align-items:center;gap:6px;width:100%;min-height:280px;transition:border-color .15s;display:flex}.dropzone:hover,.is-dragging .dropzone{border-color:var(--line)}.dropzone-title{font-family:var(--kai);padding:0 4px;font-size:26px;font-weight:700}.dropzone:hover .dropzone-title,.is-dragging .dropzone-title{background:linear-gradient(transparent 55%, var(--hl) 55%)}.dropzone-hint{color:var(--ink-soft)}.dropzone-soon{color:var(--ink-faint);margin-top:10px;font-size:13px}.workspace{gap:24px;display:grid}@media (width>=900px){.workspace{grid-template-columns:minmax(0,1fr) 340px;align-items:start}}.canvas-frame{background:repeating-conic-gradient(var(--wash) 0 25%, #fff 0 50%) 0 0 / 20px 20px;border:1.5px solid var(--line);border-radius:var(--radius);justify-content:center;display:flex;overflow:hidden}.is-dragging .canvas-frame{border-style:dashed}canvas{touch-action:none;max-width:100%;height:auto;max-height:70vh;display:block}canvas.is-movable{cursor:crosshair}.hint{color:var(--ink-soft);margin:8px 0 0;font-size:14px}.thumbs{gap:10px;margin-top:14px;padding:4px 4px 8px;display:flex;overflow-x:auto}.thumb{flex:none;width:64px;height:64px;position:relative}.thumb>button:first-child{border:1.5px solid var(--line);background:#fff;border-radius:4px;width:100%;height:100%;padding:0;overflow:hidden}.thumb img{object-fit:cover;width:100%;height:100%;display:block}.thumb.is-active>button:first-child{box-shadow:0 0 0 3px var(--hl)}.thumb-remove{border:1.5px solid var(--line);background:#fff;border-radius:50%;width:22px;height:22px;padding:0;font-size:13px;line-height:1;position:absolute;top:-8px;right:-8px}.thumb-add{border:1.5px dashed var(--ink-faint);color:var(--ink-soft);background:#fff;border-radius:4px;font-size:22px}.panel{border:1.5px solid var(--line);border-radius:var(--radius);background:#fff;flex-direction:column;gap:16px;padding:24px 20px 20px;display:flex;position:relative}.panel:before{content:"";background:var(--hl);opacity:.8;width:72px;height:18px;position:absolute;top:-10px;left:24px;transform:rotate(-3deg)}@media (width>=900px){.panel{position:sticky;top:26px}}.field{flex-direction:column;gap:6px;display:flex}.field-label{justify-content:space-between;font-size:14px;font-weight:700;display:flex}.field-label output{color:var(--ink-soft);font-variant-numeric:tabular-nums;font-weight:400}.field-note{color:var(--ink-faint);font-size:12px}.field input:not([type]){border:1.5px solid var(--line);background:#fff;border-radius:4px;width:100%;padding:10px 12px}input[type=range]{width:100%;accent-color:var(--pen)}.chips{flex-wrap:wrap;gap:8px;margin-top:-6px;display:flex}.chip{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:4px 12px;font-size:14px}.chip.is-on{background:var(--hl);font-weight:700}.segmented{border:1.5px solid var(--line);border-radius:4px;grid-template-columns:1fr 1fr;display:grid;overflow:hidden}.segmented button{background:#fff;border:0;padding:8px}.segmented button+button{border-left:1.5px solid var(--line)}.segmented button[aria-checked=true]{background:var(--hl);font-weight:700}.swatches{align-items:center;gap:10px;display:flex}.swatch{border:1.5px solid var(--line);border-radius:50%;width:30px;height:30px;padding:0}.swatch.is-on{box-shadow:0 0 0 3px #fff, 0 0 0 5px var(--pen)}.toggle{align-items:center;gap:6px;margin-left:auto;font-size:14px;display:flex}.toggle input{accent-color:var(--pen);width:16px;height:16px}.note,.warn,.error{border-radius:4px;margin:-6px 0 0;padding:8px 10px;font-size:13px}.note{background:var(--wash);color:var(--ink-soft)}.warn{background:var(--warn-bg);color:var(--warn)}.error{background:var(--warn-bg);color:var(--warn);margin:0}.actions{flex-direction:column;gap:10px;display:flex}.btn{border:1.5px solid var(--line);border-radius:var(--radius);background:#fff;padding:12px 16px;font-weight:700;transition:transform .1s,background-color .1s}.btn:not(:disabled):hover{background:var(--wash)}.btn-primary{background:var(--hl)}.btn-primary:not(:disabled):hover{background:var(--hl-deep)}.btn:not(:disabled):active{transform:translateY(1px)}.privacy{color:var(--ink-faint);margin:0;font-size:12px}.content{border-top:1.5px dashed var(--ink-soft);padding:40px 0 24px}.content h2{font-family:var(--kai);margin:0 0 14px;font-size:26px}.content section+section{margin-top:36px}.steps{counter-reset:step;gap:16px;margin:0;padding:0;list-style:none;display:grid}@media (width>=720px){.steps{grid-template-columns:repeat(3,1fr)}}.steps li{counter-increment:step;color:var(--ink-soft);padding-left:44px;position:relative}.steps li:before{content:counter(step);border:1.5px solid var(--line);width:32px;height:32px;color:var(--ink);font-family:var(--kai);background:#fff;border-radius:50%;place-items:center;font-weight:700;display:grid;position:absolute;top:0;left:0}.steps strong{color:var(--ink);display:block}.faq details{border-bottom:1px solid var(--rule);padding:12px 0}.faq summary{cursor:pointer;font-weight:700}.faq p{color:var(--ink-soft);margin:8px 0 0}.site-footer{color:var(--ink-faint);padding:24px 0 40px;font-size:14px}.site-footer a{color:inherit}.video-controls{flex-direction:column;gap:10px;margin-top:12px;display:flex}.video-controls .hint{margin:0}.thumb>button:first-child{position:relative}.thumb-badge{color:#fff;background:#1d2433cc;border-radius:4px;padding:0 4px;font-size:10px;line-height:16px;position:absolute;bottom:3px;right:3px}.progress{width:100%;height:8px;accent-color:var(--pen)}@media (prefers-reduced-motion:reduce){.dropzone,.btn{transition:none}}