:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans JP,"Apple Color Emoji","Segoe UI Emoji";line-height:1.5}body{margin:0;background:#f6f7f9;color:#111}.pageHeader{display:flex;align-items:center;gap:10px;margin-bottom:12px}.pageHeader h1{margin:0;line-height:1}.logo{width:28px;height:28px;border-radius:6px;display:inline-block}.wrap{max-width:880px;margin:0 auto;padding:16px;display:grid;gap:16px}h1{margin:8px 0 0;font-size:28px}.about,.usecase,.features{margin-top:24px}.about h2,.usecase h2,.features h2{font-size:18px;margin-bottom:8px}.features h3{font-size:15px;margin:12px 0 4px}.about p,.features p{margin:6px 0}.usecase ul{margin:8px 0 0;padding-left:18px}.usecase li{margin:4px 0}.note{font-size:13px;color:#555}.noteTop{margin:8px 0 14px}.help{margin-top:18px;padding:10px 12px;border:1px solid #e7e7e7;border-radius:12px;background:#fff}.help summary{cursor:pointer;font-weight:600;list-style:none}.help summary::-webkit-details-marker{display:none}.help summary:after{content:"＋";float:right}.help[open] summary:after{content:"－"}.help section{margin-top:14px}.desc{margin:0;color:#444}.card{background:#fff;border:1px solid #e7e7e7;border-radius:12px;padding:12px}.card h2{margin:0 0 8px;font-size:16px}textarea{width:100%;box-sizing:border-box;border:1px solid #d8d8d8;border-radius:10px;padding:10px;font-size:14px;resize:vertical}.meta{margin:6px 0 0;font-size:12px;color:#666}details{margin-top:10px}.opt{margin-top:10px;display:grid;gap:10px}.opt label{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.opt input[type=text]{width:120px;padding:6px 8px;border-radius:8px;border:1px solid #d8d8d8}.opt select{padding:6px 8px;border-radius:8px;border:1px solid #d8d8d8;background:#fff}.hint{margin:16px 0 8px;padding-top:8px;font-size:12px;color:#666;font-weight:600;border-top:1px dashed #ddd}.btns{margin-top:10px;display:flex;gap:10px;flex-wrap:wrap}button{border:1px solid #111;background:#111;color:#fff;padding:10px 12px;border-radius:10px;cursor:pointer;font-weight:600}button.ghost{background:#fff;color:#111}.toast{min-height:1.2em;margin:8px 0 0;color:#0a6}.footer{text-align:center;color:#777;font-size:12px}.footer a,.footer small{color:#666;text-decoration:underline;display:inline-block;margin:4px 2px}.sep{margin:0 4px}@media(max-width:480px){.sep{display:none}.footer a,.footer small{display:block;margin:4px 0}}@media(max-width:600px){.wrap{padding:12px}h1{font-size:24px}}