*{box-sizing:border-box}
body{margin:0;font:1rem/1.5 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans JP",sans-serif;color:#1b1b1f;background:#f6f4ef}
a{color:#7a1f2b}
.top{display:flex;justify-content:space-between;align-items:center;padding:10px 18px;background:#141416;color:#fff}
.top .brand{color:#fff;font-weight:700;text-decoration:none}
.top .lang{font-size:.8125rem;display:flex;gap:8px;align-items:center}
main{max-width:1180px;margin:0 auto;padding:0 16px 40px}
.hero{padding:26px 0 14px}
.hero h1{font-size:1.875rem;line-height:1.2;margin:0 0 10px}
.hero h1 .kw{background:#141416;color:#fff;padding:0 8px;border-radius:4px}
.sub{font-size:1.0625rem;margin:0 0 8px;color:#333}
.lede{background:#fff;border-left:4px solid #7a1f2b;padding:10px 14px;margin:10px 0}
.better{margin:10px 0;padding-left:20px}.better li{margin:4px 0}
.why{font-size:.9375rem;color:#333;margin:8px 0}
.cta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:14px 0 6px}
button,.btn,.ghost,.buy,.filebtn{font:inherit;cursor:pointer;border-radius:8px;padding:9px 16px;border:1px solid #141416;background:#fff;color:#141416;text-decoration:none;display:inline-block}
button.primary,.primary{background:#7a1f2b;border-color:#7a1f2b;color:#fff;font-weight:600}
.buy{background:#141416;color:#fff;font-weight:600}.buy.alt{background:#fff;color:#141416}
.buy b{font-weight:700}
.ghost{background:transparent}
.small{font-size:.8125rem;color:#555}
button.small,.ghost.small{padding:5px 10px;font-size:.8125rem}
.priv{color:#2e5d34}
.tool{display:grid;grid-template-columns:360px 1fr;gap:18px;background:#fff;border-radius:12px;padding:16px;box-shadow:0 1px 3px #0002}
.drop{border:2px dashed #999;border-radius:10px;padding:14px;text-align:center}
.drop.over{border-color:#7a1f2b;background:#fbeff0}
.drop p{margin:4px 0}
fieldset{border:1px solid #ddd;border-radius:8px;margin:12px 0;padding:8px 12px}
legend{font-weight:600;font-size:.875rem}
.modes label{display:block;margin:4px 0;font-size:.9375rem}
.modes .small{display:block;margin-left:22px}
.sliders label{display:grid;grid-template-columns:110px 1fr 30px;align-items:center;gap:8px;font-size:.875rem;margin:6px 0}
.size .row,.actions .row,.lib .row{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:6px 0}
.size input[type=number]{width:80px;padding:6px;font:inherit;font-size:max(1rem,1em)}
select,input[type=number],#stName,#keyIn{padding:6px;font:inherit;border:1px solid #bbb;border-radius:6px;font-size:max(1rem,1em)}
.chk{display:flex;gap:6px;align-items:center;font-size:.875rem;margin:4px 0}
.sizeout{font-weight:600;margin:6px 0 0}
.erase{border-top:1px solid #eee;padding-top:8px;font-size:.875rem}
.erase label{display:flex;gap:6px;align-items:center;margin:4px 0}
.actions{border-top:1px solid #eee;margin-top:10px;padding-top:10px}
.actions #pdfBtn{width:100%}
#stName{flex:1;min-width:120px}
.views{display:flex;gap:6px;margin-bottom:8px;flex-wrap:wrap}
.views button{padding:5px 12px;font-size:.875rem}
.views button.on{background:#141416;color:#fff}
.stage{position:relative;min-height:360px;background:repeating-conic-gradient(#f1f1f1 0 25%,#fff 0 50%) 0 0/24px 24px;border-radius:8px;display:flex;gap:8px;align-items:flex-start;justify-content:center;padding:8px}
.stage canvas{max-width:100%;max-height:78vh;height:auto;background:#fff;box-shadow:0 1px 4px #0003;touch-action:none}
.stage.side canvas{max-width:49%}
.empty{color:#666;align-self:center;text-align:center;max-width:320px}
.result{font-size:.875rem;color:#333;margin:8px 0 0}
.lib,.pro,.faq{background:#fff;border-radius:12px;padding:14px 18px;margin-top:18px;box-shadow:0 1px 3px #0002}
.liblist{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px;margin:8px 0}
.libitem{display:flex;gap:8px;border:1px solid #eee;border-radius:8px;padding:6px}
.libitem img{width:70px;height:88px;object-fit:contain;background:#fff;border:1px solid #eee}
.libitem b{display:block}.libitem .small{display:block;margin-bottom:4px}
.libitem button{margin:2px 2px 0 0}
.plans{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}
.key{display:flex;flex-wrap:wrap;gap:8px;align-items:flex-end}
.key label{display:flex;flex-direction:column;font-size:.875rem;flex:1;min-width:220px}
.faq details{margin:6px 0}.faq summary{cursor:pointer;font-weight:600}
.foot{text-align:center;padding:20px;font-size:.875rem}
.pay{border:none;border-radius:12px;max-width:440px;padding:20px;box-shadow:0 8px 30px #0005}
.pay::backdrop{background:#0006}
body.pro .actions button{border-color:#2e5d34}
@media (max-width:820px){.tool{grid-template-columns:minmax(0,1fr)}.hero h1{font-size:1.5rem}.stage{min-height:240px}}