:root{--brand:#0b5aa2;--brand-dark:#084a86;--border:#d7dde3;--bg:#f5f7f9;--text:#23292f;--required:#d32f2f}*{box-sizing:border-box}html,body{height:100%}body{color:var(--text);background:var(--bg);margin:0;font-family:Noto Sans Japanese,Hiragino Sans,Yu Gothic,Meiryo,system-ui,sans-serif;line-height:1.7}#root{flex-direction:column;min-height:100dvh;display:flex}.site-header{border-bottom:1px solid var(--border);background:#fff;align-items:center;padding:14px 20px;display:flex}.site-header .logo{letter-spacing:.02em;min-height:32px;color:var(--brand);align-items:center;font-size:20px;font-weight:700;text-decoration:none;display:inline-flex}.site-header .logo img{width:auto;height:32px;display:block}main{flex:1 0 auto;width:100%;max-width:760px;margin:0 auto;padding:28px 16px 64px}h1.form-title{text-align:center;margin:18px 0 6px;font-size:22px}h1.form-title--solo{margin-bottom:24px}.form-sub{text-align:center;color:#6b757d;margin:0 0 24px;font-size:14px}.card{border:1px solid var(--border);background:#fff;border-radius:10px;padding:8px 20px 24px}table.form-table{border-collapse:collapse;width:100%}table.form-table th,table.form-table td{text-align:left;width:100%;padding:0;display:block}table.form-table th{padding-top:20px;padding-bottom:6px;font-size:15px;font-weight:600}.required{color:var(--required);margin-left:6px;font-size:12px}.help-text{color:#7a8288;margin:4px 0 0;font-size:12px}input[type=text],input[type=email],input[type=tel],input[type=number],input[type=date],select,textarea{border:1px solid var(--border);background:#fff;border-radius:6px;width:100%;padding:10px 12px;font-family:inherit;font-size:15px}textarea{resize:vertical}select{width:auto;min-width:160px}.choice{cursor:pointer;margin:4px 0;font-size:15px;display:block}.choice input{margin-right:8px}.checkbox-group{margin-bottom:10px}.checkbox-group>strong{margin:10px 0 2px;font-size:14px;display:block}.field-error{color:var(--required);margin:4px 0 0;font-size:12px}.actions{text-align:center;margin-top:28px}button.primary,button.secondary{cursor:pointer;border:1px solid #0000;border-radius:6px;padding:12px 32px;font-family:inherit;font-size:16px}button.primary{background:var(--brand);color:#fff}button.primary:hover{background:var(--brand-dark)}button.primary:disabled{cursor:not-allowed;background:#a9bccd}button.secondary{color:var(--text);border-color:var(--border);background:#fff;margin-right:12px}.alert{border-radius:6px;margin:12px 0;padding:12px 16px;font-size:14px}.alert.error{color:#a1281c;background:#fdecea}.alert.success{color:#1e6b34;background:#e7f4ea}.confirm-row{border-bottom:1px solid var(--border);padding:12px 0}.confirm-row .label{color:#6b757d;font-size:13px}.confirm-row .value{white-space:pre-wrap;word-break:break-word;font-size:15px}.done{text-align:center;padding:24px 0}.done .public-id{margin:8px 0;font-size:22px;font-weight:700}.file-list{color:#55606a;margin:8px 0 0;padding-left:18px;font-size:13px}.site-footer{text-align:center;color:#97a1a9;padding:24px 16px calc(40px + env(safe-area-inset-bottom,0px));overflow-wrap:anywhere;flex-shrink:0;font-size:12px;line-height:1.8}.center-state{text-align:center;color:#6b757d;padding:60px 0}.reply-thread{margin:16px 0;padding:0;list-style:none}.reply-message{border:1px solid var(--border);border-radius:8px;max-width:85%;margin-bottom:10px;padding:10px 14px}.reply-message.inbound{background:#e8f1fb;margin-left:auto}.reply-message.outbound{background:#f2f4f5}.reply-meta{color:#6b757d;margin-bottom:4px;font-size:12px;display:block}.reply-body{white-space:pre-wrap;overflow-wrap:anywhere;margin:0}.reply-label{margin-top:8px;font-weight:600;display:block}.reply-input{box-sizing:border-box;width:100%;margin-top:6px}