.sti-quiz{--sti-navy:#00014c;max-width:850px;margin:20px auto;padding:28px;border:1px solid #dfe7f0;border-radius:19px;color:#263344;background:#fff;box-sizing:border-box}
.sti-quiz *{box-sizing:border-box}.sti-quiz [hidden]{display:none!important}.sti-quiz-top{display:flex;justify-content:space-between;gap:12px;color:var(--sti-navy);font-weight:650;font-size:14px}.sti-meter{height:7px;background:#e6edf6;border-radius:9px;margin:15px 0 27px;overflow:hidden}.sti-meter-fill{height:100%;width:0;background:#3578bb;transition:width .2s}.sti-topic{font-size:13px;color:#637388;margin:0 0 12px}.sti-question{font-size:25px;line-height:1.35;color:var(--sti-navy);margin:0 0 25px}.sti-options{display:grid;gap:12px}.sti-answer{width:100%;border:1px solid #ccd9e9!important;border-radius:10px!important;padding:14px 17px!important;text-align:left!important;background:#fff!important;color:#233652!important;cursor:pointer;font-size:16px!important}.sti-answer:hover:not(:disabled){background:#eef4fc!important}.sti-answer.sti-right{border-color:#3b9767!important;background:#eaf7ef!important}.sti-answer.sti-wrong{border-color:#b55252!important;background:#fff0f0!important}.sti-answer:focus-visible,.sti-next:focus-visible,.sti-restart:focus-visible{outline:3px solid #307dcb;outline-offset:2px}.sti-feedback{margin-top:22px;padding:20px;border-radius:12px;background:#f3f6fb;line-height:1.65}.sti-feedback h4{color:var(--sti-navy);margin:18px 0 8px}.sti-feedback p{margin:8px 0}.sti-feedback-title{font-weight:700}.sti-next,.sti-restart{border:0!important;background:var(--sti-navy)!important;color:#fff!important;padding:13px 22px!important;border-radius:10px!important;margin-top:22px;cursor:pointer}.sti-next:hover,.sti-restart:hover{background:#2e6ca9!important}.sti-summary h3{color:var(--sti-navy)}@media(max-width:600px){.sti-quiz{padding:19px}.sti-question{font-size:21px}.sti-quiz-top{font-size:12px}}

.sti-navigation{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 24px}.sti-navigation button,.sti-navigation a,.sti-listen,.sti-show-lesson{font-family:inherit;font-size:14px;border-radius:9px;padding:10px 14px;cursor:pointer;text-decoration:none!important}.sti-navigation button,.sti-listen,.sti-show-lesson{background:#eef4fc!important;border:1px solid #c5d5e8!important;color:#00014c!important}.sti-navigation button:disabled{opacity:.45;cursor:default}.sti-exit{color:#7b3540!important;border:1px solid #e1c9cd;background:#fff}.sti-navigation button:focus-visible,.sti-navigation a:focus-visible,.sti-listen:focus-visible,.sti-show-lesson:focus-visible{outline:3px solid #307dcb;outline-offset:2px}.sti-audio-row{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-top:16px}.sti-audio-note{font-size:13px;color:#596a7e}.sti-show-lesson{margin-top:15px}.sti-lesson{border-top:1px solid #dae5f2;margin-top:16px;padding-top:6px}.sti-lesson p{white-space:pre-line}
/* v0.5 – tentativi ripetuti e audio dopo risposta corretta */
.sti-retry{border:0!important;background:#00014c!important;color:white!important;padding:13px 22px!important;border-radius:10px!important;margin-top:22px;cursor:pointer}
.sti-retry:hover{background:#2e6ca9!important}
.sti-retry:focus-visible{outline:3px solid #307dcb;outline-offset:2px}
.sti-listen:disabled{opacity:.48;cursor:not-allowed!important}
.sti-audio-hint{font-size:13px;color:#596a7e}


/* v0.7 – Impaginazione mobile-first, senza cambiare il motore del quiz. */
.sti-quiz{--sti-navy:#102b52;width:min(100% - 20px,820px);margin:10px auto 24px;padding:22px;border-radius:18px;border-color:#dce5ee;line-height:1.45}
.sti-quiz .sti-compact-header{display:flex;justify-content:space-between;align-items:center;gap:12px;min-width:0;padding-bottom:12px;margin-bottom:12px;border-bottom:1px solid #e2eaf2}
.sti-quiz .sti-identity{display:flex;flex-direction:column;gap:2px;min-width:0}
.sti-quiz .sti-identity-title{font-weight:800;font-size:16px;color:#102b52;line-height:1.2}
.sti-quiz .sti-identity-level{font-size:13px;color:#52677d}
.sti-quiz .sti-language{max-width:55%;min-width:0;font-size:13px;line-height:1.3;text-align:right}
.sti-quiz .sti-language select{max-width:100%;min-height:36px;font-size:14px}
.sti-quiz .sti-quiz-top{align-items:center;gap:8px;color:#465d75;font-size:13px}
.sti-quiz .sti-meter{margin:8px 0 15px;height:6px}
.sti-quiz .sti-navigation{margin:0 0 15px;gap:9px}
.sti-quiz .sti-navigation button,.sti-quiz .sti-navigation a{min-height:44px;display:inline-flex;align-items:center;justify-content:center;font-size:13px;padding:9px 12px;line-height:1.3}
.sti-quiz .sti-topic{font-size:13px;margin-bottom:7px}
.sti-quiz .sti-question{font-size:clamp(21px,4.5vw,27px);line-height:1.32;margin:0 0 15px;overflow-wrap:anywhere}
.sti-quiz .sti-options{gap:9px}
.sti-quiz .sti-answer{min-height:48px;padding:11px 14px!important;line-height:1.45!important;border-radius:11px!important}
.sti-quiz .sti-audio-row{margin-top:12px;gap:7px}
.sti-quiz .sti-listen,.sti-quiz .sti-show-lesson{min-height:44px;line-height:1.4}
.sti-quiz .sti-audio-hint{font-size:12px;line-height:1.3}
.sti-quiz .sti-feedback{margin-top:16px;padding:16px;overflow-wrap:anywhere}
.sti-quiz .sti-next,.sti-quiz .sti-retry,.sti-quiz .sti-restart{min-height:46px;margin-top:14px;font-size:15px;font-weight:700}
.sti-quiz button:focus-visible,.sti-quiz a:focus-visible{outline:3px solid #176fc5;outline-offset:3px}
@media(max-width:600px){
 .sti-quiz{width:calc(100% - 16px);margin:8px auto 16px;padding:13px 12px;border-radius:14px}
 .sti-quiz .sti-compact-header{padding-bottom:9px;margin-bottom:9px;gap:8px}
 .sti-quiz .sti-identity-title{font-size:14px}
 .sti-quiz .sti-identity-level{font-size:12px}
 .sti-quiz .sti-language{max-width:56%}
 .sti-quiz .sti-meter{margin:7px 0 11px}
 .sti-quiz .sti-navigation{gap:7px;margin-bottom:12px;flex-wrap:nowrap}
 .sti-quiz .sti-navigation button,.sti-quiz .sti-navigation a{flex:1;min-width:0;font-size:12px;padding:8px 7px;text-align:center}
 .sti-quiz .sti-question{font-size:21px;margin-bottom:12px}
 .sti-quiz .sti-answer{font-size:16px!important;min-height:46px;padding:10px 12px!important}
 .sti-quiz .sti-audio-row{margin-top:10px}
 .sti-quiz .sti-feedback{padding:13px;font-size:15px}
 .sti-quiz .sti-next,.sti-quiz .sti-retry,.sti-quiz .sti-restart{width:100%}
}
@media(max-height:720px) and (max-width:600px){
 .sti-quiz{margin-top:4px;padding-top:10px;padding-bottom:10px}
 .sti-quiz .sti-question{margin-bottom:9px}
 .sti-quiz .sti-options{gap:7px}
 .sti-quiz .sti-answer{min-height:44px;padding:8px 11px!important}
}
@media(prefers-reduced-motion:reduce){.sti-quiz .sti-meter-fill{transition:none}}

.sti-exercise-code{font-size:12px!important;color:#64748b!important;margin:1px 0 8px!important;font-weight:400!important;letter-spacing:.02em}

.sti-quiz .sti-step .sti-exercise-code{display:block!important;visibility:visible!important;opacity:1!important;font-size:12px!important;color:#64748b!important;margin:4px 0 10px!important}