#mercari-gen-tool{background:#fff;border:1px solid #e5e5e5;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,.05);font-family:-apple-system,BlinkMacSystemFont,Helvetica Neue,Hiragino Kaku Gothic ProN,Yu Gothic,sans-serif;margin:2em auto;max-width:600px;overflow:hidden;width:100%}.gen-header{background:#ea352d;color:#fff;font-size:1.1em;font-weight:700;padding:15px;text-align:center}.gen-body{padding:20px}.gen-question{border-bottom:2px solid #f5f5f5;font-size:1.1em;margin-bottom:20px;padding-bottom:10px;text-align:center}.gen-btn,.gen-question{color:#333;font-weight:700}.gen-btn{background:#fff;border:1px solid #ddd;border-radius:8px;cursor:pointer;display:block;font-size:1em;margin-bottom:12px;padding:16px;position:relative;text-align:left;transition:all .2s;width:100%}.gen-btn:after{color:#ccc;content:"›";font-size:1.5em;position:absolute;right:15px;top:50%;transform:translateY(-50%)}.gen-btn:hover{background:#fff5f5;border-color:#ea352d;color:#ea352d}.gen-btn:active{transform:scale(.98)}.gen-back-btn{background:none;border:none;color:#888;cursor:pointer;font-size:.9em;margin-top:10px;padding:10px;text-align:center;text-decoration:underline;width:100%}.result-card{background:#f9f9f9;border:1px solid #eee;border-radius:8px;margin-bottom:15px;padding:15px}.result-text{color:#333;font-size:.95em;line-height:1.6;margin-bottom:12px;white-space:pre-wrap}.copy-btn{background:#333;border:none;border-radius:6px;color:#fff;cursor:pointer;display:block;font-weight:700;padding:12px;text-align:center;width:100%}.copy-btn:hover{background:#555}.copy-btn.copied{background:#ea352d}.hidden{display:none}.fade-in{animation:fadeIn .3s ease-in-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}