*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#1d2433;background:#f6f7fb}
a{color:#1a56db}header,footer{background:#fff;border-bottom:1px solid #e3e6ee}footer{border-top:1px solid #e3e6ee;margin-top:40px;font-size:14px}
.wrap{max-width:900px;margin:0 auto;padding:12px 16px}header .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.logo{font-weight:700;text-decoration:none;color:#1d2433}nav a{margin-left:14px;font-size:14px}h1{font-size:1.8rem;line-height:1.25;margin:.6em 0 .3em}
.card{background:#fff;border:1px solid #e3e6ee;border-radius:10px;padding:18px;margin:16px 0}label{display:block;font-weight:600;margin:10px 0 4px}
input,select,textarea,button{font:inherit}input,select,textarea{width:100%;padding:9px;border:1px solid #b9c0cf;border-radius:6px;background:#fff}
textarea{min-height:160px;font-family:ui-monospace,Menlo,monospace;font-size:14px}.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
button{background:#1a56db;color:#fff;border:0;border-radius:6px;padding:10px 16px;margin:10px 8px 0 0;cursor:pointer}button.sec{background:#e8ecf5;color:#1d2433}
button:focus,input:focus,select:focus,textarea:focus{outline:3px solid #93b4f5;outline-offset:1px}.out{background:#eef4ff;border-radius:8px;padding:12px;margin-top:12px}
.ad{min-height:90px;border:1px dashed #c5cad6;display:flex;align-items:center;justify-content:center;color:#8a93a6;font-size:12px;margin:16px 0}
table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}td,th{border:1px solid #e3e6ee;padding:6px 8px;text-align:left}.muted{color:#5b6475;font-size:14px}
.chk{display:flex;gap:6px;align-items:center;font-weight:400}.chk input{width:auto}
.vh{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.flabel{display:block;font-weight:600;margin-bottom:4px}.fpick{display:flex;gap:8px;align-items:center}.fbtn{display:inline-block;background:#e8ecf5;color:#1d2433;border-radius:6px;padding:8px 14px;cursor:pointer;font-weight:400;margin:0}.vh:focus+.fbtn{outline:3px solid #93b4f5;outline-offset:1px}

/* fix-2026-10-31 */pre,code{overflow-x:auto;max-width:100%}pre{white-space:pre;background:#eef1f7;padding:10px;border-radius:6px}code{overflow-wrap:anywhere}main{overflow-wrap:break-word}
@media(max-width:600px){h1{font-size:1.4rem}header .wrap{padding:8px 12px}nav{display:flex;overflow-x:auto;white-space:nowrap;width:100%;-webkit-overflow-scrolling:touch}nav a{margin:0 14px 0 0}.ad{min-height:50px}.intro-more{display:none}}