:root{--bg-color:#f0f2f5;--container-bg-color:#fff;--text-color:#333;--primary-color:#007bff;--primary-hover-color:#0056b3;--correct-color:#28a745;--incorrect-color:#dc3545;--border-color:#ddd;--shadow-color:#0000001a;--font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background:radial-gradient(circle at top left, #007bff24, transparent 34%), radial-gradient(circle at right top, #28a7451a, transparent 28%), var(--bg-color);color:var(--text-color);min-height:100dvh;padding:1rem;padding-bottom:calc(1rem + env(safe-area-inset-bottom));justify-content:center;align-items:flex-start;display:flex}#quiz-app-container{background-color:var(--container-bg-color);box-shadow:0 4px 12px var(--shadow-color);text-align:center;border-radius:12px;width:100%;max-width:700px;margin-top:2rem;padding:2rem;transition:all .3s}@media (max-width:600px){#quiz-app-container{margin-top:1rem;padding:1.2rem}.record-board-header,.record-best-attempt{flex-direction:column;align-items:stretch}.record-summary-grid,.record-section-grid{grid-template-columns:1fr}}.start-screen-container{flex-direction:column;align-items:stretch;gap:1.25rem;display:flex}.start-hero{text-align:left;background:linear-gradient(135deg,#007bff1f,#007bff08);border:1px solid #007bff29;border-radius:18px;grid-template-columns:1.2fr 1fr;gap:1rem;padding:1.25rem;display:grid}.start-hero-copy h2{color:#173a63;margin-bottom:.4rem;font-size:2rem}.start-kicker{color:var(--primary-color);letter-spacing:.08em;margin-bottom:.5rem;font-size:.78rem;font-weight:700;display:inline-block}.start-hero-copy p{color:#495057;max-width:50ch;line-height:1.7}.start-hero-metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem;display:grid}.start-hero-metrics article,.start-insight-strip div{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffffc7;border:1px solid #007bff1f;border-radius:14px;padding:.85rem}.start-hero-metrics span,.start-insight-strip span,.settings-hint{color:#6c757d;margin-bottom:.25rem;font-size:.78rem;display:block}.start-hero-metrics strong,.start-insight-strip strong{color:#173a63;font-size:1rem}.start-insight-strip{grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem;padding:.15rem 0;display:grid}.settings-group{text-align:left;width:100%}.start-settings-shell{flex-direction:column;gap:1rem;width:100%;display:flex}.settings-panel{background:#fff;border:1px solid #007bff1f;border-radius:18px;padding:1rem 1rem 1.15rem;box-shadow:0 10px 20px #00000008}.settings-panel-header{justify-content:space-between;align-items:flex-start;gap:.75rem;margin-bottom:.9rem;display:flex}.settings-title{color:#6c757d;border-left:4px solid var(--primary-color);margin-bottom:0;padding-left:8px;font-size:1rem;font-weight:600}.options-group{flex-wrap:wrap;justify-content:flex-start;gap:.75rem;display:flex}.option-chip-row{gap:.6rem}.options-group label{border:2px solid var(--border-color);cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:manipulation;border-radius:8px;padding:.75rem 1.25rem;font-weight:500;transition:all .2s;display:block}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;display:grid}.category-card{border:2px solid var(--border-color);cursor:pointer;background:#fff;border-radius:14px;flex-direction:column;align-items:flex-start;gap:.35rem;min-height:88px;padding:.9rem 1rem;transition:all .2s;display:flex}.category-card:hover{background:#f8fbff;border-color:#007bff73}.category-card input{opacity:0;pointer-events:none;position:absolute}.category-card:has(input:checked){background:linear-gradient(#007bff1f,#007bff0a);border-color:#007bffbf}.category-card-label{color:#173a63;font-weight:700}.category-card-meta{color:#6c757d;font-size:.82rem}.category-card-quiet{background:#f8f9fa}.options-group input[type=checkbox],.options-group input[type=radio]{opacity:0;width:0;position:fixed}.options-group label:hover{border-color:var(--primary-color);background-color:#f8f9fa}.options-group input[type=checkbox]:checked+label,.options-group input[type=radio]:checked+label{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color)}.start-quiz-button{background-color:var(--correct-color);color:#fff;cursor:pointer;touch-action:manipulation;border:none;border-radius:8px;align-self:center;width:100%;max-width:300px;margin-top:1rem;padding:.75rem 2rem;font-size:1.2rem;font-weight:700;transition:background-color .2s}.start-quiz-button:hover:not(:disabled){background-color:#218838}.start-quiz-button:disabled{cursor:not-allowed;opacity:.7;background-color:#6c757d}.quiz-action-bar{justify-content:flex-end;margin:0 0 1rem;display:flex}.interrupt-button{min-width:160px}.category-option{display:contents}.practice-record-board{border-top:1px solid var(--border-color);text-align:left;width:100%;margin-top:2rem;padding-top:1.5rem}.record-board-header{justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:1rem;display:flex}.record-board-header h2{margin-bottom:.25rem;font-size:1.35rem}.record-board-header p{color:#6c757d;font-size:.9rem}.record-board-error{color:var(--incorrect-color);background-color:#dc354514;border:1px solid #dc354533;border-radius:8px;margin-bottom:1rem;padding:.75rem 1rem}.record-board-empty{border:1px dashed var(--border-color);color:#6c757d;background-color:#f8f9fa;border-radius:12px;padding:1rem}.record-summary-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem;margin-bottom:1rem;display:grid}.record-metric-card{border:1px solid var(--border-color);background-color:#f8f9fa;border-radius:10px;padding:.9rem}.record-metric-card span{color:#6c757d;margin-bottom:.25rem;font-size:.8rem;display:block}.record-metric-card strong{font-size:1.3rem}.record-section-grid{grid-template-columns:1.6fr 1fr;gap:1rem;display:grid}.record-section-card{border:1px solid var(--border-color);background-color:#f8f9fa;border-radius:12px;padding:1rem}.record-section-card h3{margin-bottom:.85rem;font-size:1rem}.record-table-wrap{overflow-x:auto}.record-table{border-collapse:collapse;width:100%;font-size:.85rem}.record-table th,.record-table td{text-align:left;vertical-align:top;border-bottom:1px solid #00000014;padding:.7rem .5rem}.record-table th{color:#6c757d;font-weight:600}.record-category-list{gap:.75rem;display:grid}.record-category-item{border:1px solid var(--border-color);background:#fff;border-radius:10px;padding:.85rem}.record-category-head{justify-content:space-between;gap:.5rem;margin-bottom:.35rem;display:flex}.record-category-meta{color:#6c757d;gap:.75rem;font-size:.85rem;display:flex}.record-best-attempt{background-color:#007bff0f;border:1px solid #007bff26;border-radius:10px;justify-content:space-between;align-items:center;gap:.75rem;margin-top:1rem;padding:.85rem 1rem;display:flex}.progress-container{color:#6c757d;text-align:right;margin-bottom:1rem;font-size:1rem;font-weight:500}.question-container{text-align:left;word-break:break-all;margin-bottom:1.5rem;font-size:1.4rem;font-weight:600;line-height:1.5}.options-container{gap:1rem;margin-bottom:1.5rem;display:grid}@media (min-width:600px){.options-container{grid-template-columns:repeat(2,1fr)}}.option-button{background-color:var(--container-bg-color);border:2px solid var(--border-color);text-align:left;cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:manipulation;border-radius:8px;padding:1rem;font-size:1rem;transition:all .2s}.option-button:hover:not(:disabled){border-color:var(--primary-color);background-color:#f8f9fa}.option-button:disabled{cursor:not-allowed}.option-button.correct{color:#fff;background-color:var(--correct-color)!important;border-color:var(--correct-color)!important}.option-button.incorrect{color:#fff;background-color:var(--incorrect-color)!important;border-color:var(--incorrect-color)!important}.option-button.revealed:not(.correct):not(.incorrect){opacity:.6}.result-feedback-container{border:2px solid var(--border-color);background-color:#f8f9fa;border-radius:8px;margin-top:1.5rem;padding:1.5rem;animation:.3s fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.result-message{text-align:left;margin-bottom:1rem;font-size:1.5rem;font-weight:700}.result-message.correct{color:var(--correct-color)}.result-message.incorrect{color:var(--incorrect-color);font-size:1.2rem}.explanation-container{text-align:left;border-top:1px solid var(--border-color);margin-top:1rem;padding-top:1rem;font-size:.95rem;line-height:1.6}.explanation-container table{border-collapse:collapse;width:100%;margin-top:1rem;margin-bottom:1rem;font-size:.85rem}.explanation-container th,.explanation-container td{text-align:left;border:1px solid #dee2e6;padding:.5rem}.explanation-container th{background-color:#e9ecef;font-weight:600}.question-id-display{color:#888;text-align:right;margin-top:1rem;font-family:monospace;font-size:.8rem}.navigation-container{padding-bottom:env(safe-area-inset-bottom);justify-content:center;gap:1rem;margin-top:1.5rem;display:flex}.nav-button{background-color:var(--primary-color);color:#fff;cursor:pointer;touch-action:manipulation;border:none;border-radius:8px;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;transition:background-color .2s}.nav-button:hover{background-color:var(--primary-hover-color)}.nav-button.secondary{background-color:#6c757d}.nav-button.secondary:hover{background-color:#5a6268}.final-result-container{flex-direction:column;align-items:center;gap:1.5rem;padding:1rem 0;display:flex}.final-result-container h2{color:var(--primary-color);font-size:2rem}.score-display{margin:1.5rem 0;font-size:1.25rem}.score-detail{color:#6c757d;margin-top:-.5rem;font-size:.95rem}.score-display strong{color:var(--correct-color);font-size:2rem}.loading-container,.error-container{flex-direction:column;justify-content:center;align-items:center;gap:1.5rem;padding:3rem 1rem;display:flex}.loading-spinner{border:5px solid #007bff1a;border-top-color:var(--primary-color);border-radius:50%;width:50px;height:50px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.error-message{color:var(--incorrect-color);text-align:center;font-size:1.1rem;font-weight:600}.app-layout{flex-direction:column;width:100%;max-width:1000px;margin:0 auto;display:flex}.global-header{background-color:var(--container-bg-color);box-shadow:0 4px 12px var(--shadow-color);border-radius:12px;justify-content:space-between;align-items:center;margin-bottom:1rem;padding:1rem 1.5rem;display:flex}.header-logo{align-items:center;gap:.75rem;display:flex}.header-logo .logo-badge{background-color:var(--primary-color);color:#fff;letter-spacing:1px;border-radius:4px;padding:.25rem .6rem;font-size:.85rem;font-weight:700}.header-logo h1{color:var(--text-color);font-size:1.25rem;font-weight:700}.header-nav-tabs{gap:.5rem;display:flex}.nav-tab-button{color:#555;cursor:pointer;background-color:#0000;border:1px solid #0000;border-radius:8px;align-items:center;gap:.25rem;padding:.5rem 1rem;font-size:.95rem;font-weight:600;transition:all .2s;display:flex}.nav-tab-button:hover{color:var(--primary-color);background-color:#f0f2f5}.nav-tab-button.active{color:var(--primary-color);background-color:#007bff1a;border-color:#007bff33}#quiz-app-container.study-mode-active{max-width:1000px;box-shadow:none;background-color:#0000;margin-top:0;padding:0}@media (max-width:768px){.global-header{flex-direction:column;gap:1rem;padding:1rem}}.study-layout{text-align:left;grid-template-columns:280px 1fr;gap:1.5rem;width:100%;min-height:calc(100vh - 120px);display:grid}.study-loading-container,.study-error-container{background-color:var(--container-bg-color);box-shadow:0 4px 12px var(--shadow-color);text-align:center;border-radius:12px;width:100%;padding:3rem}.study-mobile-header{background-color:var(--container-bg-color);border-bottom:1px solid var(--border-color);z-index:10;justify-content:space-between;align-items:center;padding:.75rem 1rem;display:none;position:sticky;top:0}.study-mobile-header .mobile-title{font-size:1.1rem;font-weight:700}.menu-toggle-button{background-color:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:.4rem .8rem;font-size:.85rem;font-weight:700}.study-sidebar{background-color:var(--container-bg-color);box-shadow:0 4px 12px var(--shadow-color);border-radius:12px;height:-moz-fit-content;height:fit-content;max-height:80vh;padding:1.5rem;position:sticky;top:1rem;overflow-y:auto}.sidebar-header{border-bottom:1px solid var(--border-color);margin-bottom:1.25rem;padding-bottom:.75rem}.sidebar-header h3{color:var(--text-color);margin-top:.5rem;font-size:1.1rem;font-weight:700}.back-button{color:var(--primary-color);cursor:pointer;background:0 0;border:none;padding:0;font-size:.85rem;font-weight:600}.back-button:hover{text-decoration:underline}.sidebar-nav{flex-direction:column;gap:.5rem;display:flex}.taxonomy-category{margin-bottom:.5rem}.taxonomy-category-header{cursor:pointer;-webkit-user-select:none;user-select:none;background-color:#f8f9fa;border-radius:6px;align-items:center;gap:.5rem;padding:.5rem;font-size:.95rem;font-weight:700;transition:background-color .2s;display:flex}.taxonomy-category-header:hover{background-color:#e9ecef}.taxonomy-sub-container{border-left:1px dashed var(--border-color);flex-direction:column;gap:.25rem;margin-top:.25rem;padding-left:.75rem;display:flex}.taxonomy-subcategory-header{cursor:pointer;color:#495057;-webkit-user-select:none;user-select:none;border-radius:6px;align-items:center;gap:.5rem;padding:.4rem .5rem;font-size:.88rem;transition:background-color .2s;display:flex}.taxonomy-subcategory-header:hover{background-color:#e9ecef}.taxonomy-topic-list{flex-direction:column;gap:.2rem;padding-left:1rem;list-style:none;display:flex}.taxonomy-topic-item{cursor:pointer;color:#6c757d;border-radius:6px;align-items:center;gap:.5rem;padding:.4rem .6rem;font-size:.85rem;transition:all .2s;display:flex}.taxonomy-topic-item:hover{color:var(--primary-color);background-color:#f1f3f5}.taxonomy-topic-item.active{color:var(--primary-color);background-color:#007bff14;font-weight:700}.folder-icon{text-align:center;color:#adb5bd;width:12px;font-size:.7rem}.file-icon{font-size:.85rem}.study-content-area{background-color:var(--container-bg-color);box-shadow:0 4px 12px var(--shadow-color);border-radius:12px;padding:2.5rem;overflow-y:auto}.study-hero-panel{background:linear-gradient(#007bff14,#fffffff2);border:1px solid #007bff24;border-radius:18px;gap:1rem;margin-bottom:1.25rem;padding:1.15rem;display:grid}.study-kicker{letter-spacing:.08em;color:var(--primary-color);margin-bottom:.35rem;font-size:.78rem;font-weight:800;display:inline-block}.study-hero-metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem;display:grid}.study-hero-metrics article{background:#fffc;border:1px solid #007bff1f;border-radius:14px;padding:.9rem}.study-hero-metrics span{color:#6c757d;margin-bottom:.25rem;font-size:.78rem;display:block}.study-hero-metrics strong{color:#173a63;font-size:1.15rem}.study-chip-row{flex-wrap:wrap;gap:.5rem;display:flex}.study-chip{color:#17406d;background:#007bff17;border-radius:9999px;align-items:center;padding:.35rem .7rem;font-size:.82rem;font-weight:600;display:inline-flex}.study-section-nav{background:#f8fbff;border:1px solid #007bff24;border-radius:16px;margin:1.5rem 0 1rem;padding:1rem}.study-section-nav-label{color:#6c757d;margin-bottom:.75rem;font-size:.82rem;font-weight:700;display:block}.study-section-nav-list{flex-wrap:wrap;gap:.5rem;display:flex}.study-section-nav-button{color:#173a63;cursor:pointer;background:#fff;border:1px solid #007bff2e;border-radius:9999px;padding:.55rem .8rem;font-size:.82rem;transition:all .2s}.study-section-nav-button:hover{background:#007bff0f;border-color:#007bff80}.study-section-card{background:#fff;border:1px solid #dee2e6e6;border-radius:16px;padding:1.1rem 1.1rem 1.25rem;box-shadow:0 8px 16px #00000008}.study-breadcrumb-container{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;width:100%;margin-bottom:.75rem;display:flex}.study-breadcrumb{color:#868e96;align-items:center;gap:.4rem;font-size:.8rem;display:flex}.study-breadcrumb .divider{color:#dee2e6}.fact-check-copy-button{color:#495057;cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:manipulation;background-color:#f1f3f5;border:1px solid #ced4da;border-radius:6px;align-items:center;gap:.25rem;padding:.3rem .6rem;font-size:.78rem;font-weight:600;transition:all .2s;display:inline-flex}.fact-check-copy-button:hover{color:var(--primary-color);background-color:#e2e6ea;border-color:#007bff4d}.fact-check-copy-button.copied{color:#155724;background-color:#d4edda;border-color:#c3e6cb}.article-title{color:#212529;border-bottom:2px solid var(--primary-color);margin-bottom:.75rem;padding-bottom:.5rem;font-size:2rem;font-weight:800}.article-description{color:#495057;margin-bottom:2rem;font-size:1.05rem;line-height:1.6}.key-points-section{background-color:#fff8f8;border:1px solid #ffe3e3;border-radius:8px;margin-bottom:2rem;padding:1.25rem}.key-points-section h2{color:#c00;margin-bottom:.5rem;font-size:1.15rem}.section-instruction{color:#868e96;margin-bottom:.75rem;font-size:.75rem}.key-points-list{flex-direction:column;gap:.75rem;list-style:none;display:flex}.key-point-item{align-items:flex-start;gap:.75rem;display:flex}.key-point-badge{color:#fff;background-color:#c00;border-radius:4px;flex-shrink:0;margin-top:.15rem;padding:.15rem .4rem;font-size:.7rem;font-weight:700}.key-point-text{color:#212529;font-size:.95rem;line-height:1.5}.red-sheet-mask{color:#fcc;cursor:pointer;-webkit-user-select:none;user-select:none;background-color:#fcc;border-bottom:2px dashed #f33;border-radius:4px;margin:0 .15rem;padding:0 .35rem;font-family:inherit;transition:all .2s;display:inline-block}.red-sheet-mask:hover{background-color:#ffb3b3}.red-sheet-mask.revealed{color:#c00;background-color:#0000;border-bottom-color:#0000;font-weight:700}.article-section{margin-top:2.25rem}.article-section h3{color:#343a40;border-left:5px solid var(--primary-color);margin-bottom:1rem;padding-left:10px;font-size:1.3rem;font-weight:700}.section-body{color:#333;font-size:.98rem;line-height:1.7}.section-body b{color:#c00}.section-body ul{margin-top:.5rem;margin-bottom:.5rem;margin-left:1.5rem}.section-body li{margin-bottom:.4rem}.formula-block{color:#212529;background-color:#f1f3f5;border-left:4px solid #6c757d;border-radius:0 6px 6px 0;margin:.75rem 0;padding:.75rem 1.25rem;font-family:Courier New,Courier,monospace;font-size:1.1rem;font-weight:700;display:inline-block}.table-responsive{width:100%;margin-top:1rem;margin-bottom:1rem;overflow-x:auto}.rich-study-table{border-collapse:collapse;border-radius:12px;width:100%;font-size:.9rem;overflow:hidden}.rich-study-table th,.rich-study-table td{text-align:left;border:1px solid #dee2e6;padding:.75rem}.rich-study-table th{color:#495057;background-color:#f1f3f5;font-weight:700}.rich-study-table tr:hover{background-color:#f8f9fa}.mini-quiz-card{text-align:center;background:linear-gradient(135deg,#e7f5ff 0%,#d0ebff 100%);border:1px solid #a5d8ff;border-radius:10px;flex-direction:column;align-items:center;margin-top:3rem;padding:1.5rem;display:flex;box-shadow:0 4px 8px #0000000a}.mini-quiz-badge{background-color:var(--primary-color);color:#fff;border-radius:9999px;margin-bottom:.75rem;padding:.2rem .6rem;font-size:.75rem;font-weight:700}.mini-quiz-card h4{color:#1c7ed6;margin-bottom:.5rem;font-size:1.15rem;font-weight:700}.mini-quiz-card p{color:#495057;max-width:500px;margin-bottom:1.25rem;font-size:.88rem}.start-mini-quiz-button{background-color:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem;font-size:.95rem;font-weight:700;transition:background-color .2s;box-shadow:0 4px 10px #007bff33}.start-mini-quiz-button:hover{background-color:var(--primary-hover-color)}.no-topic-placeholder{color:#868e96;justify-content:center;align-items:center;height:200px;display:flex}@media (max-width:768px){.study-layout{grid-template-columns:1fr;gap:0;min-height:calc(100vh - 180px)}.study-sidebar{z-index:100;width:280px;height:100vh;max-height:100vh;box-shadow:4px 0 12px var(--shadow-color);border-radius:0 12px 12px 0;transition:left .3s;position:fixed;top:0;left:-290px}.study-sidebar.mobile-open{left:0}.study-mobile-header{display:flex}.study-content-area{box-shadow:none;border-radius:0;padding:1.2rem}.article-title{font-size:1.5rem}.article-description{font-size:.95rem}.start-hero,.study-hero-panel,.start-hero-metrics,.start-insight-strip,.study-hero-metrics,.category-grid{grid-template-columns:1fr}}.study-modal-overlay{-webkit-backdrop-filter:blur(4px);z-index:2000;background-color:#0006;justify-content:center;align-items:center;width:100vw;height:100vh;animation:.2s ease-out fadeIn;display:flex;position:fixed;top:0;left:0}.study-modal-content{background-color:var(--container-bg-color);border:1px solid var(--border-color);border-radius:12px;flex-direction:column;width:90%;max-width:600px;animation:.2s cubic-bezier(.16,1,.3,1) scaleIn;display:flex;overflow:hidden;box-shadow:0 10px 25px #0003}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.study-modal-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:1rem 1.5rem;display:flex}.study-modal-header h3{color:var(--text-color);margin:0;font-size:1.1rem;font-weight:700}.close-x-button{cursor:pointer;color:#adb5bd;background:0 0;border:none;font-size:1.25rem;transition:color .2s}.close-x-button:hover{color:var(--incorrect-color)}.study-modal-body{flex-direction:column;gap:.75rem;padding:1.5rem;display:flex}.modal-instruction-text{color:#495057;font-size:.88rem}.modal-error-text{color:var(--incorrect-color);background-color:#dc354514;border:1px solid #dc354533;border-radius:6px;margin:0;padding:.75rem;font-size:.88rem}.modal-prompt-textarea{border:1px solid var(--border-color);resize:none;color:#333;background-color:#f8f9fa;border-radius:6px;outline:none;width:100%;height:250px;padding:.75rem;font-family:Courier New,Courier,monospace;font-size:.8rem;line-height:1.5}.modal-prompt-textarea:focus{border-color:var(--primary-color);background-color:#fff}.study-modal-footer{border-top:1px solid var(--border-color);background-color:#f8f9fa;justify-content:flex-end;gap:.75rem;padding:1rem 1.5rem;display:flex}.nav-button.success{background-color:var(--correct-color)}.nav-button.success:hover{background-color:#218838}