/* Shared rich-media and sequential-image presentation for question content. */
.exam-rich video,.exam-rich audio,.tk-question-rich video,.tk-question-rich audio,.qbody video,.qbody audio,.practice-question video,.practice-question audio,.rvq video,.rvq audio,.grading-question video,.grading-question audio{display:block;max-width:100%;width:min(100%,760px);margin:18px auto;border-radius:16px;background:#101114;box-shadow:0 12px 32px rgba(15,23,42,.12)}
.exam-rich audio,.tk-question-rich audio,.qbody audio,.practice-question audio,.rvq audio,.grading-question audio{min-height:54px;box-shadow:none;border:1px solid rgba(148,163,184,.35);background:#f8fafc}
.tk-image-sequence{display:grid;gap:16px;margin:18px 0}.tk-image-sequence__intro{display:grid;gap:5px;padding:14px 16px;border:1px solid #f1d37a;background:#fff9e8;border-radius:14px}.tk-image-sequence__intro strong{font-size:15px}.tk-image-sequence__intro span{font-size:12.5px;color:#64748b;line-height:1.9}.tk-image-sequence__steps{display:grid;gap:16px}.tk-image-sequence__step{border:1px solid #dce2ea;background:#fff;border-radius:18px;padding:16px;transition:opacity .2s,filter .2s,transform .2s;overflow:hidden}.tk-image-sequence__step[hidden]{display:none}.tk-image-sequence__step.is-locked{display:none}.tk-image-sequence__step.is-past{opacity:.55;filter:grayscale(1);pointer-events:none}.tk-image-sequence__step.is-current{border-color:#eebc31;box-shadow:0 8px 26px rgba(226,169,22,.12)}.tk-image-sequence__step header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.tk-image-sequence__step header span{font-weight:900}.tk-image-sequence__step header small{color:#7c8799;font-size:11.5px}.tk-image-sequence__step figure{margin:0 0 14px;display:grid;gap:8px}.tk-image-sequence__step figure img{display:block;width:auto;max-width:100%;max-height:520px;margin:auto;border-radius:14px;object-fit:contain;background:#f3f4f6}.tk-image-sequence__step figcaption{font-size:12px;color:#64748b;text-align:center}.tk-image-sequence__options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.tk-image-sequence__option{display:flex;align-items:center;gap:10px;border:1px solid #dfe4eb;border-radius:13px;padding:12px 14px;cursor:pointer;background:#fff;transition:.16s}.tk-image-sequence__option:hover{border-color:#e8b323;background:#fffaf0}.tk-image-sequence__option.is-selected{border-color:#e8b323;background:#fff7dc}.tk-image-sequence__option.is-correct{outline:2px solid #22c55e}.tk-image-sequence__option input{width:18px;height:18px;accent-color:#e3ac18;flex:none}.tk-image-sequence__feedback{margin-top:12px;padding:9px 12px;border-radius:10px;background:#f1f5f9;font-weight:800}.tk-image-sequence__feedback small{margin-inline-start:8px;font-weight:600}.tk-image-sequence__feedback.status-correct{background:#ecfdf3;color:#166534}.tk-image-sequence__feedback.status-incorrect{background:#fff1f2;color:#b91c1c}.tk-image-sequence.is-readonly .tk-image-sequence__step{display:block!important}.tk-image-sequence.is-readonly .tk-image-sequence__step.is-answered{opacity:1;filter:none;pointer-events:auto}@media(max-width:720px){.tk-image-sequence__options{grid-template-columns:1fr}.tk-image-sequence__step{padding:12px}}