:root{font-family:system-ui,-apple-system,"Noto Sans JP",sans-serif;color:#e9ede9;background:#111713;color-scheme:dark}*{box-sizing:border-box}body{margin:0}main{max-width:860px;margin:0 auto;padding:48px 24px}header{display:flex;gap:16px;align-items:center;margin-bottom:36px}.mark{display:grid;place-items:center;width:52px;height:52px;border:1px solid #658569;border-radius:15px;color:#bbd6a0;font-family:serif;font-size:32px}h1{margin:0;font-size:28px;letter-spacing:-1px}header p,footer{margin:5px 0;color:#9da89f;font-size:13px}.panel{border:1px solid #344337;border-radius:20px;background:#1a231c;padding:28px}.eyebrow{color:#bcd79f;font-size:12px;letter-spacing:.12em}h2{font-size:27px;line-height:1.6;margin:20px 0 12px}.panel p{line-height:1.8;color:#b1bdb3}.button,button{display:inline-block;border:1px solid #526754;background:transparent;color:#e9ede9;border-radius:9px;padding:10px 15px;text-decoration:none;cursor:pointer;font:inherit;font-size:14px}.button{background:#bcd79f;color:#182116;border-color:#bcd79f;font-weight:650}#welcome .button{margin-top:20px}button:disabled{opacity:.5;cursor:wait}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px}.toolbar div{display:flex;gap:8px}#messages{min-height:220px;max-height:52vh;overflow:auto;padding:24px 0}.message{max-width:90%;padding:14px 18px;margin:12px 0;border-radius:12px;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8}.message.user{background:#314231;margin-left:auto}.message.assistant{background:#222e25}.speaker{display:block;color:#bcd79f;font-size:11px;margin-bottom:5px}.empty{text-align:center;margin:70px 0}label{display:block;font-size:12px;margin-bottom:8px;color:#b1bdb3}textarea{width:100%;resize:vertical;background:#101912;border:1px solid #526754;color:#edf1ed;padding:12px;border-radius:10px;font:inherit;font-size:15px}.send-row{display:flex;justify-content:space-between;align-items:center;margin-top:10px}#timing{font-size:12px;color:#b1bdb3}#status{color:#edbf92;line-height:1.7;min-height:28px}footer{text-align:center;margin-top:30px}a:focus-visible,button:focus-visible,textarea:focus-visible{outline:2px solid #d5e9bf;outline-offset:3px}[hidden]{display:none!important}@media(max-width:600px){main{padding:28px 14px}.panel{padding:18px}.toolbar{align-items:flex-start;flex-direction:column}h2{font-size:22px}}