:root{--blue:#0031c3;--green:#28a745;--red:#dc3545;--orange:#e67e22;--light-bg:#f8fbff}.quiz-container{max-width:1140px;margin:20px auto;padding:8px;border-radius:20px;font-family:'Segoe UI',Tahoma,sans-serif}.nasa-group-header-block{border:3px solid #bfdbfe;margin:20px 0 20px 0;padding:15px}.nasa-group-header-block:hover{border:3px solid var(--blue)}.nasa-group-header-block .nasa-custom-header{font-size:1em;color:var(--blue);font-weight:700}.nasa-custom-header{margin-bottom:10px;padding:5px!important;text-transform:none!important;text-align:justify!important}.nasa-custom-header b,.nasa-custom-header strong{color:var(--blue);font-weight:700;text-transform:uppercase;display:block;margin-bottom:8px}.quiz-media-img{max-width:100%;height:auto;display:block;margin:15px auto;border-radius:12px}.quiz-media-audio{width:100%;margin:15px 0}.quiz-media-video{margin:15px 0;border-radius:12px;overflow:hidden;background:#000;position:relative}.quiz-media-video iframe{width:100%;aspect-ratio:16 / 9;display:block}.quiz-media-video video{display:block;width:100%;max-height:500px}.question-block{border:2px solid #bfdbfe;padding:15px;margin-bottom:30px;border-radius:12px;background:#FFF}.question-block:hover{border:2px solid var(--blue)}.options{display:grid;grid-template-columns:1fr;gap:10px;margin-top:15px}.options label{line-height:1.6;word-break:break-word}.options input[type="radio"],.options input[type="checkbox"]{display:inline-block}@media (min-width:600px){.options{grid-template-columns:1fr 1fr;gap:15px}}label{background:var(--light-bg);border:2px solid #e0ecff;padding:10px 12px;border-radius:12px;cursor:pointer;display:block;transition:all 0.2s ease;box-sizing:border-box;width:100%}label:hover{transform:translateY(-2px);background:#eff6ff;border-color:#93c5fd}input[type="radio"]{margin-right:12px;transform:scale(1.2)}.correct{background-color:#d4edda!important;border-color:var(--green)!important}.correct-text{color:var(--green);font-weight:600}.incorrect{background-color:#f8d7da!important;border-color:var(--red)!important}.incorrect-text{color:var(--red);font-weight:600}.explanation{display:none;margin-top:15px;padding:15px;border-radius:8px;font-size:.9em;background:#fff3cd;color:#856404;border-left:4px solid var(--orange)}.correct .explanation{border-left:4px solid var(--green)}#progress-wrapper{position:sticky!important;top:10px;z-index:999;width:100%;height:18px;background-color:#eff6ff!important;border-radius:10px;margin:15px 0;overflow:hidden;border:2px solid #ddd}#progress-bar{width:0%;height:100%;background-color:var(--green)!important;transition:width 0.4s ease-in-out}#progress-text{position:absolute;width:100%;text-align:center;line-height:18px;font-size:14px;font-weight:700;color:#212529;text-shadow:0 1px 2px #fff;top:0;left:0;pointer-events:none}.sticky-btn{position:sticky;bottom:5px;text-align:center;z-index:100;padding:10px;border-radius:15px}button{padding:10px 20px;border:none;border-radius:10px;cursor:pointer;font-weight:700;font-size:16px;margin:5px}button:hover{transform:translateY(-2px)}.btn-check{background:#013f73;color:#fff}.btn-reset{background:#444;color:#fff}#summary{display:none;text-align:center;margin-bottom:30px;padding:25px;border-radius:15px;border:3px solid var(--blue);background:#fff}.q-header-row{margin-bottom:8px;display:block;line-height:1.6}.q-number-label{background-color:#e0f7fa!important;color:#006064!important;padding:2px 8px!important;border-radius:8px!important;font-weight:bold!important;font-size:0.9em!important;display:inline-block!important;line-height:1.2!important;vertical-align:middle!important;margin-right:5px!important}.q-inline-content-inline{display:inline;font-weight:400;color:#2c3e50;vertical-align:middle}.instruction-text{font-weight:350;color:#666;display:inline}.q-main-text{margin-top:5px;line-height:1.8;font-weight:400;color:#2c3e50;display:block}.q-media-area{text-align:center;margin-bottom:15px;width:100%}.q-media-area img{max-width:100%;height:auto;border-radius:15px;box-shadow:0 5px 15px rgb(0 0 0 / .1);display:inline-block}.fill-blank-container{display:block;line-height:1.8;margin-bottom:5px}.quiz-container .text-input-styled{display:block!important;width:100%!important;padding:14px 18px!important;margin-top:15px!important;border:2px solid #e0ecff!important;border-radius:12px!important;font-size:16px!important;font-family:inherit!important;transition:all 0.3s ease!important;box-sizing:border-box!important;outline:none!important;background-color:var(--light-bg)!important}.quiz-container .text-input-styled:hover{border-color:#93c5fd!important}.quiz-container .text-input-styled:focus{border-color:#93c5fd!important;background-color:#ffffff!important;box-shadow:0 0 10px rgb(0 49 195 / .15)!important}.input-wrapper{padding:5px 0}.matching-container{display:flex;gap:20px;margin-top:20px;align-items:flex-start;flex-wrap:wrap}.matching-left-side{flex:0 0 55%;display:flex;flex-direction:column;gap:12px;min-width:300px}.matching-pool-b{flex:1;border:2px dashed #bbb!important;padding:15px;border-radius:12px;background:#fafafa;display:flex;flex-direction:column;gap:12px;min-width:250px}.item-a-row{display:grid!important;grid-template-columns:1fr 80px;align-items:center;gap:10px;width:100%;margin-bottom:15px}.text-a{background:var(--light-bg);padding:10px 15px;border-radius:12px;border:2px solid #e0ecff;color:#333;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:left}.select-wrapper{width:80px!important;display:flex;justify-content:center}.matching-select{width:100%!important;padding:6px 0!important;border:2px solid #3498db!important;border-radius:8px!important;background:#ffffff!important;font-weight:bold!important;text-align:center!important;cursor:pointer}.matching-select:hover{border:3px solid #3498db!important}.item-b{font-style:italic;color:#555;font-size:.95em;line-height:1.4}.item-b b{color:#3498db;font-weight:700}@media (max-width:600px){.matching-container{flex-direction:column}.matching-left-side{width:100%}.select-wrapper{width:60px}.matching-pool-b{width:90%;margin-top:10px}}@media (max-width:480px){.quiz-container{padding:5px}.nasa-custom-header{padding:10px}.question-block{padding:12px;margin-bottom:15px}label{padding:12px 10px}.sticky-btn{display:flex;justify-content:space-around;gap:5px;padding:10px 5px}.sticky-btn button{flex:1;padding:12px 5px;font-size:14px;margin:0}}.fill-blank-input{display:inline-block!important;width:50px;min-width:50px!important;border:2px solid #e0ecff!important;border-radius:8px!important;background:var(--light-bg)!important;text-align:center;outline:none;font-family:inherit;font-size:inherit;color:var(--blue);padding:0 5px!important;margin:0 2px!important;transition:border-color 0.3s;box-sizing:content-box!important}.fill-blank-input:hover{border-color:#93c5fd!important}.fill-blank-input:focus{background-color:#ffffff!important;box-shadow:0 0 10px rgb(0 49 195 / .15)!important}.q-inline-content{display:inline;word-wrap:break-word}.fill-blank-input:focus::placeholder{color:#fff0}.fill-blank-input:disabled{background:rgb(0 0 0 / .02)!important;cursor:default;opacity:1;-webkit-text-fill-color:currentColor}.fill-blank-container{color:#333;font-size:1em;line-height:1.8}input[type="checkbox"]{margin-right:12px;transform:scale(1.2)}