.signup{width:min(680px,calc(100% - 32px));max-width:680px}.signup h1{font-size:clamp(28px,6vw,42px)}.signup textarea{width:100%;font:inherit;padding:12px;border:1px solid #bdc9d8;border-radius:10px;resize:vertical}.signup-trap{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.captcha-image{display:block;max-width:100%;height:auto;margin:10px 0}.access-note{margin:12px 0;padding:12px 18px;background:#eaf0f8;color:#26364d;border:1px solid #cbd8e9;border-radius:12px}.admin-detail{margin:6px 0 16px;padding:16px;background:#f3f6fa;border-radius:12px}.admin-detail dl{display:grid;grid-template-columns:max-content 1fr;gap:8px 16px}.admin-detail dt{font-weight:600}.admin-detail dd{margin:0;overflow-wrap:anywhere}