:root{font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:#263d48;background:#263d48;color-scheme:light}*{box-sizing:border-box}body{margin:0;min-height:100dvh}main{width:min(100%,460px);margin:auto;background:#f2f5f5;min-height:100dvh;box-shadow:0 0 60px #11232c66}canvas{width:100%;height:max(660px,calc(100dvh - 66px));display:block;touch-action:manipulation}nav{display:flex;justify-content:center;align-items:center;gap:22px;font-size:14px;padding:8px 12px}nav a,nav button{color:#526872;text-decoration:underline}nav button{font:inherit;border:0;background:none;padding:0}.hint{font-size:12px;margin:0;text-align:center;color:#73848b;padding:0 12px calc(10px + env(safe-area-inset-bottom))}dialog{font:16px/1.6 system-ui;color:#263d48;background:#fff;max-width:calc(100% - 32px);width:380px;border:0;border-radius:18px;padding:24px;box-shadow:0 18px 60px #10232f55}dialog::backdrop{background:#11283188}h2{margin:0 0 12px;font-size:21px}.message{white-space:pre-line}input{width:100%;font:inherit;padding:12px;border:1px solid #c4d0d3;border-radius:8px;background:#f6f8f8;color:#263d48}button{cursor:pointer}dialog button{font:inherit;min-height:44px;padding:10px 18px;background:#263d48;color:white;border:0;border-radius:9px}.buttons{display:flex;gap:12px;justify-content:flex-end;margin-top:20px}#cancel{background:#e8edef;color:#263d48}#copy-status{font-size:14px;min-height:22px;margin-bottom:0}input:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid #ae6647;outline-offset:3px}