:root{--max-width:1100px;--gap:12px;--border:#d9d9d9;--text:#222;--muted:#666;--primary:#1f6feb;--danger:#d1242f;--bg:#fff}*{box-sizing:border-box}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,"Noto Sans TC",sans-serif;color:var(--text);background:#f6f8fa}.container{max-width:var(--max-width);margin:0 auto;padding:24px 16px}.card{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:16px}h1,h2,h3{margin:0 0 12px}.form-row{display:flex;gap:var(--gap);flex-wrap:wrap}.form-group{flex:1 1 320px;display:flex;flex-direction:column;gap:6px;margin-bottom:12px}input[type=text],input[type=email],select{padding:10px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px}.btn{display:inline-block;padding:10px 14px;border:1px solid transparent;border-radius:6px;background:var(--primary);color:#fff;cursor:pointer}.btn-secondary{background:#fff;color:var(--text);border-color:var(--border)}.message{margin-top:12px;padding:10px 12px;border-radius:6px;border:1px solid var(--border);background:#fff}.message.error{border-color:#ffb4b4;background:#fff5f5;color:var(--danger)}small,.muted{color:var(--muted)}.table{width:100%;border-collapse:collapse;margin-top:12px;font-size:14px}.table th,.table td{border:1px solid var(--border);padding:8px;vertical-align:top}.table th{background:#f6f8fa;text-align:left}@media (max-width:576px){.container{padding:16px 12px}.form-group{flex-basis:100%}.btn{width:100%}.table{display:block;overflow-x:auto;white-space:nowrap}}