.qsbf-app{max-width:1180px;margin:0 auto;padding:28px 18px 60px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:#1f2937}
.qsbf-title{font-size:15px;font-weight:700;color:#111827;margin:0 0 18px}
.qsbf-steps{display:flex;flex-wrap:wrap;gap:6px 0;align-items:center;margin-bottom:34px}
.qsbf-step{display:flex;align-items:center;gap:9px;padding-right:4px}
.qsbf-step-num{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;background:#f1f5f9;color:#64748b;border:1.5px solid transparent;flex:none;transition:.2s}
.qsbf-step-label{font-size:12.5px;color:#64748b;white-space:nowrap;transition:.2s}
.qsbf-step-line{width:26px;height:1px;background:#e2e8f0;margin:0 8px;flex:none}
.qsbf-step.is-active .qsbf-step-num{background:#fff;color:#b8365a;border-color:#b8365a}
.qsbf-step.is-active .qsbf-step-label{color:#b8365a;font-weight:600}
.qsbf-step.is-done .qsbf-step-num{background:#b8365a;color:#fff}
.qsbf-step.is-done .qsbf-step-label{color:#334155}
.qsbf-panel{display:none;animation:qsbIn .22s ease}
.qsbf-panel.is-active{display:block}
@keyframes qsbIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.qsbf-h2{font-size:20px;font-weight:700;color:#0f172a;margin:0 0 6px}
.qsbf-sub{font-size:13.5px;color:#64748b;margin:0 0 22px}
.qsbf-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px;margin-bottom:10px}
.qsbf-card{border:1px solid #e5e7eb;border-radius:10px;overflow:hidden;display:flex;flex-direction:column;background:#fff;transition:.2s}
.qsbf-card:hover{box-shadow:0 6px 22px rgba(0,0,0,.07)}
.qsbf-card.is-picked{border-color:#b8365a;box-shadow:0 6px 22px rgba(184,54,90,.14)}
.qsbf-card-head{background:#fbe4e9;padding:34px 20px;text-align:center}
.qsbf-card-name{font-size:26px;font-weight:700;color:#111827;margin:0 0 6px}
.qsbf-card-price{font-size:20px;font-weight:600;color:#374151}
.qsbf-card-body{padding:22px 20px;flex:1}
.qsbf-feat{display:flex;gap:9px;align-items:flex-start;font-size:13.5px;color:#374151;margin-bottom:11px;line-height:1.45}
.qsbf-feat svg{flex:none;margin-top:3px;color:#b8365a}
.qsbf-card-foot{padding:0 20px 22px}
.qsbf-pick{width:100%;padding:11px;border-radius:6px;border:1.5px solid #b8365a;background:#fff;color:#b8365a;font-size:13.5px;font-weight:600;cursor:pointer;transition:.15s}
.qsbf-pick:hover{background:#fdf2f5}
.qsbf-card.is-picked .qsbf-pick{background:#b8365a;color:#fff}
.qsbf-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-bottom:18px}
.qsbf-fld{margin-bottom:18px}
.qsbf-lbl{display:block;font-size:13px;font-weight:600;color:#334155;margin-bottom:7px}
.qsbf-in,.qsbf-sel,.qsbf-ta{width:100%;padding:10px 12px;border:1px solid #d1d5db;border-radius:6px;font-size:14px;color:#111827;background:#fff;transition:.15s;font-family:inherit}
.qsbf-in:focus,.qsbf-sel:focus,.qsbf-ta:focus{outline:none;border-color:#b8365a;box-shadow:0 0 0 3px rgba(184,54,90,.1)}
.qsbf-ta{min-height:88px;resize:vertical}
.qsbf-hint{font-size:11.5px;color:#94a3b8;margin-top:5px}
.qsbf-radios{display:flex;flex-direction:column;gap:9px}
.qsbf-radios.is-row{flex-direction:row;flex-wrap:wrap;gap:18px}
.qsbf-radio{display:flex;align-items:center;gap:9px;cursor:pointer;font-size:14px;color:#334155}
.qsbf-radio input{width:17px;height:17px;accent-color:#b8365a;cursor:pointer}
.qsbf-sec{margin:26px 0 16px;padding-bottom:9px;border-bottom:1px solid #e5e7eb}
.qsbf-sec h3{font-size:16px;font-weight:700;color:#0f172a;margin:0}
.qsbf-tbl-wrap{overflow-x:auto;border-radius:8px;border:1px solid #e5e7eb;margin-bottom:22px}
.qsbf-tbl{width:100%;border-collapse:collapse}
.qsbf-tbl th{background:#1e293b;color:#fff;padding:11px 14px;text-align:left;font-size:12px;font-weight:600}
.qsbf-tbl td{padding:11px 14px;border-bottom:1px solid #f1f5f9;font-size:13px;color:#334155}
.qsbf-tbl tr:last-child td{border-bottom:none}
.qsbf-note{background:#eff6ff;border-left:4px solid #3b82f6;padding:13px 16px;border-radius:6px;font-size:13.5px;color:#1e40af;margin-bottom:18px}
.qsbf-warn{background:#fef2f2;border-left:4px solid #ef4444;padding:13px 16px;border-radius:6px;font-size:13.5px;color:#991b1b;margin-bottom:18px}
.qsbf-warn ol{margin:8px 0 0;padding-left:18px}
.qsbf-nav{display:flex;gap:11px;justify-content:center;margin-top:34px;padding-top:24px;border-top:1px solid #f1f5f9}
.qsbf-btn{padding:11px 30px;border-radius:6px;font-size:14px;font-weight:600;cursor:pointer;border:1.5px solid transparent;transition:.15s;font-family:inherit}
.qsbf-btn-primary{background:#b8365a;color:#fff}
.qsbf-btn-primary:hover{background:#9d2d4c}
.qsbf-btn-primary:disabled{opacity:.5;cursor:not-allowed}
.qsbf-btn-ghost{background:#fff;color:#475569;border-color:#d1d5db}
.qsbf-btn-ghost:hover{background:#f8fafc}
.qsbf-sum{border:1px solid #e5e7eb;border-radius:8px;overflow:hidden;margin-bottom:20px}
.qsbf-sum-row{display:flex;justify-content:space-between;padding:11px 16px;border-bottom:1px solid #f1f5f9;font-size:13.5px}
.qsbf-sum-row:last-child{border-bottom:none}
.qsbf-sum-row.is-total{background:#f8fafc;font-weight:700;font-size:15px;color:#0f172a}
.qsbf-sum-lbl{color:#475569}
.qsbf-sum-val{color:#111827;font-weight:600}
.qsbf-err{border-color:#ef4444 !important}
.qsbf-err-msg{color:#dc2626;font-size:12px;margin-top:5px}
#qsb-result{padding:40px 20px;text-align:center}
.qsbf-ok{background:#f0fdf4;border:1px solid #86efac;border-radius:10px;padding:34px}
.qsbf-ok h3{color:#15803d;font-size:20px;margin:0 0 9px}
.qsbf-ok p{color:#166534;font-size:14px;margin:0}
@media(max-width:640px){.qsbf-step-line{display:none}.qsbf-step{padding-right:12px}.qsbf-nav{flex-direction:column-reverse}.qsbf-btn{width:100%}}

/* Darker text overrides */
.qsbf-app .qsbf-lbl{color:#0f172a !important;font-weight:700}
.qsbf-app input,.qsbf-app select,.qsbf-app textarea{color:#000 !important;font-weight:500}
.qsbf-app .qsbf-in,.qsbf-app .qsbf-sel,.qsbf-app .qsbf-ta{border-color:#9ca3af}
.qsbf-app .qsbf-in::placeholder{color:#6b7280;opacity:1}
.qsbf-app .qsbf-radio{color:#111827;font-weight:500}
.qsbf-app .qsbf-hint{color:#475569}
.qsbf-app .qsbf-sub{color:#475569}
.qsbf-app .qsbf-feat{color:#1f2937;font-weight:500}
.qsbf-app .qsbf-tbl td{color:#111827;font-weight:500}
.qsbf-app .qsbf-sum-lbl{color:#1f2937;font-weight:500}
.qsbf-app .qsbf-step-label{color:#334155;font-weight:500}


/* Article accordion */
.qsbf-acc{border:1px solid #e5e7eb;border-radius:10px;overflow:hidden;margin-top:6px}
.qsbf-acc-item{border-bottom:1px solid #e5e7eb}
.qsbf-acc-item:last-child{border-bottom:none}
.qsbf-acc-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:15px 18px;cursor:pointer;background:#fff;transition:.15s;user-select:none}
.qsbf-acc-head:hover{background:#fafafa}
.qsbf-acc-title{font-size:14.5px;font-weight:700;color:#111827}
.qsbf-acc-item.is-open .qsbf-acc-head{background:#fdf6f8}
.qsbf-acc-item.is-open .qsbf-acc-title{color:#2563eb}
.qsbf-acc-ico{flex:none;color:#b8365a;transition:transform .2s}
.qsbf-acc-item.is-open .qsbf-acc-ico{transform:rotate(180deg)}
.qsbf-acc-body{display:none;padding:0 18px 16px;font-size:13.5px;line-height:1.6;color:#374151;border-top:1px solid #f1f5f9;padding-top:14px}
.qsbf-acc-item.is-open .qsbf-acc-body{display:block}
.qsbf-art-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
@media(max-width:860px){.qsbf-art-grid{grid-template-columns:1fr}}


/* Article accordion */
.qsbf-app .qsbf-acc{border:1px solid #e5e7eb;border-radius:10px;overflow:hidden;margin-top:8px;background:#fff}
.qsbf-app .qsbf-acc-item{border-bottom:1px solid #e5e7eb}
.qsbf-app .qsbf-acc-item:last-child{border-bottom:none}
.qsbf-app .qsbf-acc-hd{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;cursor:pointer;background:#fff;transition:.15s;user-select:none}
.qsbf-app .qsbf-acc-hd:hover{background:#fafafa}
.qsbf-app .qsbf-acc-item.is-open .qsbf-acc-hd{background:#fdf6f7}
.qsbf-app .qsbf-acc-ttl{font-size:14.5px;font-weight:700;color:#111827}
.qsbf-app .qsbf-acc-item.is-open .qsbf-acc-ttl{color:#2563eb}
.qsbf-app .qsbf-acc-ico{flex:none;color:#b8365a;transition:transform .2s}
.qsbf-app .qsbf-acc-item.is-open .qsbf-acc-ico{transform:rotate(180deg)}
.qsbf-app .qsbf-acc-bd{display:none;padding:14px 18px 18px;font-size:13.5px;line-height:1.65;color:#374151;border-top:1px solid #f3f4f6}
.qsbf-app .qsbf-acc-item.is-open .qsbf-acc-bd{display:block}
.qsbf-app .qsbf-art-wrap{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
@media(max-width:860px){.qsbf-app .qsbf-art-wrap{grid-template-columns:1fr}}

.qsbf-app .qsbf-panel{display:block}