:root{--bg: #f7f8fa;--surface: #ffffff;--border: #e4e6eb;--text: #1a1d21;--muted: #6b7280;--primary: #2f66f6;--primary-hover: #1f54e0;--danger: #c23b3b;--success: #2f8a58;--radius: 8px;--shadow: 0 1px 2px rgba(20, 20, 40, .06)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button,.btn{font:inherit;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:8px 14px;border-radius:var(--radius);cursor:pointer;transition:background .1s,border-color .1s}button:hover,.btn:hover{border-color:#c7cbd1}button.primary,.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}button.primary:hover,.btn.primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}button.danger{color:var(--danger);border-color:#e7bdbd}button:disabled{opacity:.5;cursor:not-allowed}input,textarea,select{font:inherit;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:8px 10px;border-radius:var(--radius);width:100%}input:focus,textarea:focus,select:focus{outline:2px solid var(--primary);outline-offset:-1px;border-color:var(--primary)}label{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:12px 24px;display:flex;justify-content:space-between;align-items:center}.topbar .brand{font-weight:600;font-size:17px}.topbar nav a{color:var(--text);margin-right:18px}.container{max-width:960px;margin:32px auto;padding:0 24px}.container.narrow{max-width:640px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:16px}.row{display:flex;gap:12px;align-items:center}.row.between{justify-content:space-between}.stack>*+*{margin-top:12px}.muted{color:var(--muted)}.small{font-size:13px}.error{color:var(--danger)}.success{color:var(--success)}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:#eef0f3;color:var(--muted)}.badge.published{background:#dff3e6;color:var(--success)}.badge.closed{background:#f3e0e0;color:var(--danger)}.badge.draft{background:#eef0f3;color:var(--muted)}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--border)}th{font-size:13px;color:var(--muted);font-weight:500}.question-card{border:1px solid var(--border);border-radius:var(--radius);padding:16px;background:var(--surface)}.choice-list{display:flex;flex-direction:column;gap:8px}.choice-item{display:flex;gap:8px;align-items:center}.choice-item input[type=radio],.choice-item input[type=checkbox]{width:auto}.center-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{width:100%;max-width:380px}.result-bar{background:#eef0f3;border-radius:4px;height:8px;overflow:hidden;margin-top:4px}.result-bar-fill{background:var(--primary);height:100%;transition:width .2s}.rating-row{display:flex;gap:6px;flex-wrap:wrap}.rating-btn{width:40px;height:40px;border-radius:var(--radius);display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:var(--surface);cursor:pointer}.rating-btn.selected{background:var(--primary);color:#fff;border-color:var(--primary)}.nps-breakdown{margin:12px 0 4px}.nps-stacked-bar{display:flex;width:100%;height:28px;border-radius:6px;overflow:hidden;background:var(--border)}.nps-stacked-segment{display:flex;align-items:center;justify-content:center;color:#fff;font-size:12px;font-weight:500;transition:flex .2s;min-width:0}.nps-legend{margin-top:10px;gap:20px;flex-wrap:wrap}.nps-legend-item{display:flex;align-items:center;gap:8px}.nps-swatch{width:10px;height:10px;border-radius:2px;flex-shrink:0}.nps-legend-count{margin-left:4px}