.ssbtu-app{max-width:900px;margin:20px auto;font-family:Arial,sans-serif;color:#202124;line-height:1.45}.ssbtu-card,.ssbtu-results,.ssbtu-formula{border:1px solid #ddd;border-radius:12px;overflow:hidden;background:#fff;margin-bottom:18px}.ssbtu-header,.ssbtu-formula>h3{background:#FDB900;color:#171717;padding:18px 22px;margin:0}.ssbtu-header h2{margin:0;font-size:25px}.ssbtu-header p{margin:4px 0 0}.ssbtu-form{padding:22px}.ssbtu-grid{display:grid;gap:16px}.ssbtu-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.ssbtu-form label{font-weight:700;font-size:14px}.ssbtu-form input,.ssbtu-form select{display:block;width:100%;box-sizing:border-box;margin-top:6px;border:1px solid #bbb;border-radius:8px;padding:12px;font-size:16px;background:#fff}.ssbtu-condition{display:block;margin-top:18px}.ssbtu-condition small{display:block;margin-top:7px;font-weight:400;color:#666}.ssbtu-delta{border:1px solid #ddd;border-radius:8px;padding:11px;background:#f7f7f7}.ssbtu-delta span,.ssbtu-delta small{display:block}.ssbtu-delta-value{display:block;font-size:25px}.ssbtu-actions{display:flex;gap:12px;margin-top:20px}.ssbtu-actions button{min-height:46px;border-radius:8px;padding:11px 20px;font-weight:700;font-size:15px;cursor:pointer}.ssbtu-calculate{background:#FDB900;border:1px solid #FDB900;flex:1;color:#111}.ssbtu-reset{background:#fff;border:1px solid #aaa}.ssbtu-error{margin-top:15px;padding:11px;border:1px solid #b42318;background:#fff3f2;color:#b42318;border-radius:8px}.ssbtu-results{padding:22px}.ssbtu-eyebrow{font-size:12px;font-weight:700;color:#666}.ssbtu-big{font-size:34px;font-weight:800}.ssbtu-big small{font-size:14px}.ssbtu-results h3{margin-bottom:2px}.ssbtu-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:20px}.ssbtu-stats div{background:#f7f7f7;padding:12px;border-radius:8px}.ssbtu-stats small,.ssbtu-stats strong{display:block}.ssbtu-multi{margin-top:15px;padding:12px;background:#f7f7f7;border-radius:8px}.ssbtu-formula>h3{font-size:18px}.ssbtu-formula-body{padding:22px}.ssbtu-formula-box{background:#f7f7f7;padding:15px;border-radius:8px}.ssbtu-formula-box div{font-size:18px;font-weight:700;margin-top:5px}.ssbtu-formula-values{border:1px solid #ddd;border-radius:8px;padding:15px;line-height:1.8;font-family:monospace}.ssbtu-disclaimer{font-size:12px;color:#666;border-top:1px solid #ddd;margin-top:20px;padding-top:15px}@media(max-width:650px){.ssbtu-grid-3,.ssbtu-stats{grid-template-columns:1fr}.ssbtu-actions{flex-direction:column}.ssbtu-header h2{font-size:21px}}