:root{--bg-primary: #ffffff;--bg-secondary: #F8F9FA;--bg-accent: #F0F2F4;--text-primary: #333333;--text-secondary: #495057;--text-muted: #6c757d;--primary: #1A2E40;--primary-hover: #132230;--primary-light: #2D3E4F;--accent: #8CB09B;--border-color: #e2e8f0;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, .25);--font-family: "Inter", system-ui, -apple-system, sans-serif;--font-header: "Montserrat", sans-serif;--header-height: 72px;--border-radius-sm: 6px;--border-radius: 12px;--border-radius-lg: 24px;--container-max-width: 1200px;--transition-fast: all .2s cubic-bezier(.4, 0, .2, 1);--transition-smooth: all .4s cubic-bezier(.4, 0, .2, 1)}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes 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1.5rem}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.items-start{align-items:flex-start}.justify-between{justify-content:space-between}.gap-1{gap:.25rem}.gap-2{gap:.5rem}.flex-1{flex:1}.min-w-0{min-width:0}.gap-4{gap:1rem}.gap-6{gap:1.5rem}.gap-8{gap:2rem}.btn{padding:.625rem 1.25rem;border-radius:var(--border-radius);font-weight:500;display:inline-flex;align-items:center;justify-content:center}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.card{background:#fff;border-radius:var(--border-radius);border:1px solid var(--border-color);box-shadow:var(--shadow);padding:1.5rem}:root{line-height:1.5;font-weight:400;color-scheme:light dark;background-color:var(--bg-primary);color:var(--text-primary);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100%;margin:0;padding:0}.md-table-wrapper{margin:1.5rem 0;overflow-x:auto;border-radius:12px;border:1.5px solid #e2e8f0;background:#fff}.md-table{width:100%;border-collapse:collapse;font-size:.95rem;text-align:left}.md-table th{background:#f8fafc;padding:12px 16px;font-weight:800;border-bottom:2px solid #e2e8f0;color:#64748b;text-transform:uppercase;font-size:.75rem;letter-spacing:.05em}.md-table td{padding:12px 16px;border-bottom:1px solid #f1f5f9;color:#334155}.md-table tr:last-child td{border-bottom:none}.md-table tr:nth-child(2n){background-color:#f9fafb}.md-table td strong{color:#1e293b}.blurred-text{filter:blur(6px);cursor:pointer;background:#f1f5f9;border-radius:4px;padding:0 4px;margin:0 2px;transition:all .2s ease;-webkit-user-select:none;user-select:none;display:inline-block;pointer-events:auto!important;position:relative;z-index:10}.blurred-text:hover{background:#e2e8f0;filter:blur(4px)}.blurred-text.unblurred{filter:none!important;background:transparent!important;-webkit-user-select:text!important;user-select:text!important;transition:none!important}em,i{font-style:italic!important}strong,b{font-weight:700!important}.academy-login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem;position:relative;overflow:hidden;background:linear-gradient(165deg,#f0f4ff,#fff 42%,#f8fafc)}.academy-login-mesh{position:absolute;inset:0;pointer-events:none}.academy-login-orb{position:absolute;border-radius:50%;filter:blur(72px);opacity:.55}.academy-login-orb--1{width:320px;height:320px;background:#4361ee38;top:-80px;left:-60px}.academy-login-orb--2{width:280px;height:280px;background:#10b98124;bottom:-60px;right:-40px}.academy-login-card{position:relative;width:100%;max-width:420px;padding:2rem 2rem 2.25rem;border-radius:20px;border:1px solid rgba(226,232,240,.9);background:#ffffffeb;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 24px 48px #0f172a14,0 0 0 1px #fff9 inset}.academy-login-back{display:inline-block;margin-bottom:1rem;font-size:13px;font-weight:600;color:#64748b;text-decoration:none}.academy-login-back:hover{color:var(--primary)}.academy-login-logo{display:inline-flex;align-items:center;gap:8px;font-size:1.2rem;font-weight:800;color:var(--primary);margin-bottom:.75rem}.academy-login-title{margin:0 0 .4rem;font-size:1.75rem;font-weight:800;color:#0f172a;line-height:1.2}.academy-login-subtitle{margin:0;font-size:14px;line-height:1.5;color:#64748b}.academy-login-header{text-align:center;margin-bottom:1.75rem}.academy-login-form{display:flex;flex-direction:column;gap:1.1rem}.academy-login-label{font-size:13px;font-weight:600;color:#475569}.academy-login-label-row{display:flex;align-items:center;justify-content:space-between;gap:8px}.academy-login-forgot-wrap{position:relative}.academy-login-forgot-btn{border:none;background:none;padding:0;font-size:12px;font-weight:600;color:var(--accent);cursor:pointer;text-decoration:underline;text-underline-offset:2px}.academy-login-forgot-btn:hover{opacity:.85}.academy-login-forgot-tip{position:absolute;right:0;top:calc(100% + 8px);z-index:20;width:min(260px,72vw);padding:12px 14px;border-radius:12px;background:#0f172a;color:#f8fafc;font-size:13px;line-height:1.45;box-shadow:0 12px 32px #0f172a47;text-align:left}.academy-login-forgot-tip:before{content:"";position:absolute;top:-6px;right:12px;width:12px;height:12px;background:#0f172a;transform:rotate(45deg)}.academy-login-forgot-tip a{color:#93c5fd;font-weight:700;word-break:break-all}.academy-login-input{width:100%;box-sizing:border-box;padding:12px 16px;border-radius:12px;border:1px solid #e2e8f0;background:#f8fafc;font-size:15px;color:#0f172a;transition:border-color .15s,box-shadow .15s,background .15s}.academy-login-input:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px #4361ee1f}.academy-login-field{display:flex;flex-direction:column;gap:6px}.academy-login-error{background:#ef44440f;color:#dc2626;padding:12px 14px;border-radius:12px;font-size:13px;font-weight:500;text-align:center;border:1px solid rgba(239,68,68,.12);margin-bottom:1rem}.academy-login-deactivated{background:linear-gradient(145deg,#f8fafc,#f1f5f9);border:1px solid #e2e8f0;border-radius:14px;padding:1.25rem;text-align:center;margin-bottom:1rem}.academy-login-deactivated-icon{font-size:2rem;margin-bottom:.35rem}.academy-login-deactivated-title{margin:0 0 .35rem;font-size:1.05rem;font-weight:800;color:#1e293b}.academy-login-deactivated-text{margin:0;font-size:.875rem;line-height:1.5;color:#64748b}.academy-login-submit{margin-top:.25rem;padding:14px;border:none;border-radius:12px;font-weight:700;font-size:16px;color:#fff;cursor:pointer;background:linear-gradient(135deg,var(--primary) 0%,#4361ee 100%);box-shadow:0 8px 24px #4361ee47;transition:transform .15s,box-shadow .15s,opacity .15s}.academy-login-submit:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 12px 28px #4361ee52}.academy-login-submit:disabled{opacity:.65;cursor:not-allowed}.academy-login-footer{margin-top:1.75rem;text-align:center;font-size:14px;color:#64748b}.academy-login-footer a{color:var(--accent);font-weight:700;text-decoration:none}.academy-login-footer a:hover{opacity:.85}.audio-player{display:flex;align-items:center;gap:12px;width:100%;padding:10px 14px;background:var(--bg-primary, #ffffff);border:1.5px solid var(--border-color, #e2e8f0);border-radius:var(--border-radius, 12px);box-shadow:var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, .05));box-sizing:border-box}.audio-player__play{flex-shrink:0;width:36px;height:36px;padding:0;border:none;border-radius:50%;background:var(--primary, #1a2e40);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s ease,transform .15s ease}.audio-player__play:hover{background:var(--primary-hover, #132230)}.audio-player__play:active{transform:scale(.96)}.audio-player__play:focus-visible{outline:2px solid var(--accent, #8cb09b);outline-offset:2px}.audio-player__track-wrap{flex:1;min-width:0;display:flex;align-items:center;gap:10px}.audio-player__seek{flex:1;min-width:0;height:6px;margin:0;appearance:none;-webkit-appearance:none;border-radius:3px;cursor:pointer;background:linear-gradient(to right,var(--primary, #1a2e40) 0%,var(--primary, #1a2e40) var(--progress, 0%),#e2e8f0 var(--progress, 0%),#e2e8f0 100%)}.audio-player__seek::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:var(--primary, #1a2e40);border:2px solid #fff;box-shadow:0 1px 3px #0003;cursor:pointer;transition:transform .15s ease}.audio-player__seek::-webkit-slider-thumb:hover{transform:scale(1.1)}.audio-player__seek::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--primary, #1a2e40);border:2px solid #fff;box-shadow:0 1px 3px #0003;cursor:pointer}.audio-player__seek::-moz-range-track{height:6px;border-radius:3px;background:transparent}.audio-player__time{flex-shrink:0;font-size:.75rem;font-weight:600;font-variant-numeric:tabular-nums;color:var(--text-muted, #6c757d);white-space:nowrap}.audio-player__volume{flex-shrink:0;width:32px;height:32px;padding:0;border:none;border-radius:8px;background:transparent;color:var(--text-secondary, #495057);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s ease,color .15s ease}.audio-player__volume:hover{background:var(--bg-accent, #f0f2f4);color:var(--primary, #1a2e40)}.audio-player__volume:focus-visible{outline:2px solid var(--accent, #8cb09b);outline-offset:1px}@media(max-width:640px){.audio-player__volume{display:none}.audio-player{padding:8px 12px;gap:10px}.audio-player__time{font-size:.7rem}}.rich-text-content{max-width:100%;overflow-x:hidden;word-break:break-word;overflow-wrap:anywhere}.rich-text-content img{max-width:100%!important;height:auto!important}.rich-text-content .embed-responsive{position:relative;width:100%;max-width:100%;margin:1rem 0;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:12px}.rich-text-content .embed-responsive iframe{position:absolute;top:0;left:0;width:100%!important;height:100%!important;max-width:100%;border:none;border-radius:12px}.rich-text-content iframe:not(.embed-responsive iframe){display:block;width:100%!important;max-width:100%;min-height:200px;aspect-ratio:16 / 9;height:auto;border:none;border-radius:12px}.rich-text-content p:has(>iframe:only-child){position:relative;width:100%;max-width:100%;margin:1rem 0;padding-bottom:56.25%;height:0;overflow:hidden}.rich-text-content p:has(>iframe:only-child) iframe{position:absolute;top:0;left:0;width:100%!important;height:100%!important;border:none;border-radius:12px}.exercise-action-bar{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:1.25rem;padding-top:1rem;border-top:3px dashed #e2e8f0}.exercise-game-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;margin:0;padding:14px 28px;border-radius:18px;border:4px solid transparent;border-bottom-width:8px;font-family:inherit;font-size:.95rem;font-weight:900;letter-spacing:.03em;text-transform:uppercase;cursor:pointer;transition:transform .1s ease,border-bottom-width .1s ease,box-shadow .1s ease;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}.exercise-game-btn:active:not(:disabled){border-bottom-width:4px;transform:translateY(4px)}.exercise-game-btn:disabled{opacity:.55;cursor:not-allowed}.exercise-game-btn--complete:before{content:"🎉";font-size:1.15rem;line-height:1;filter:drop-shadow(0 2px 0 rgba(0,0,0,.15))}.exercise-game-btn--complete{background:linear-gradient(180deg,#34d399,#10b981 55%,#059669);border-color:#047857;color:#fff;text-shadow:0 1px 0 rgba(0,0,0,.2);box-shadow:0 4px 14px #10b98159}.exercise-game-btn--complete:hover:not(:disabled){filter:brightness(1.05)}.exercise-game-btn--secondary{background:linear-gradient(180deg,#fff,#f1f5f9);border-color:#cbd5e1;color:#475569;text-shadow:none;box-shadow:0 2px 8px #0000000f}.exercise-game-btn--secondary:hover:not(:disabled){filter:brightness(1.02)}.exercise-game-btn__icon{font-size:1.15rem;line-height:1;filter:drop-shadow(0 2px 0 rgba(0,0,0,.15))}.exercise-status-pill{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border-radius:16px;border:4px solid #e2e8f0;border-bottom-width:6px;background:#fff;font-size:.82rem;font-weight:900;letter-spacing:.04em;text-transform:uppercase;color:#64748b;box-shadow:0 2px 8px #0000000a}.exercise-status-pill__icon{font-size:1.1rem;line-height:1}.exercise-status-pill--pending{border-color:#fcd34d;background:linear-gradient(180deg,#fffbeb,#fef3c7);color:#b45309}.exercise-status-pill--sent{border-color:#93c5fd;background:linear-gradient(180deg,#eff6ff,#dbeafe);color:#1d4ed8}.exercise-status-pill--checked{border-color:#6ee7b7;background:linear-gradient(180deg,#ecfdf5,#d1fae5);color:#047857}.exercise-status-pill--score{border-color:#a5b4fc;background:linear-gradient(180deg,#eef2ff,#e0e7ff);color:#4338ca}.exercise-score-badge{display:inline-flex;align-items:center;gap:6px;padding:10px 16px;border-radius:14px;border:3px solid #c7d2fe;border-bottom-width:5px;background:linear-gradient(180deg,#fff,#eef2ff);font-size:.85rem;font-weight:900;color:#4338ca;font-variant-numeric:tabular-nums}.exercise-score-badge__star{font-size:1rem}.exercise-gap-content{line-height:2.4;font-size:1rem;color:#1e293b;word-break:break-word;overflow-wrap:anywhere;max-width:100%;width:100%;overflow:hidden}.exercise-gap-row{display:inline-flex;align-items:flex-start;vertical-align:middle;max-width:100%;margin:2px 4px 4px 0}.exercise-gap-field-shell{box-sizing:border-box;display:inline-flex;flex-direction:column;min-width:60px;max-width:min(280px,100%);border:2px solid #c7d2fe;border-radius:10px;overflow:hidden;vertical-align:middle;transition:border-color .2s,background .2s,box-shadow .2s}.exercise-gap-field-shell:focus-within{border-color:#818cf8;box-shadow:0 0 0 3px #6366f11f}.exercise-gap-field-shell--draggable{min-width:48px;max-width:min(180px,100%)}.exercise-gap-field-shell--with-suffix{min-width:96px}.exercise-gap-field-shell--draggable.exercise-gap-field-shell--with-suffix{min-width:84px}.exercise-gap-field-shell__main{position:relative;display:block;min-height:30px}.exercise-gap-field-shell__submit{position:absolute;top:0;right:0;bottom:0;z-index:1;border:none;border-left:1px solid rgba(99,102,241,.22);background:linear-gradient(180deg,#6366f114,#6366f124);cursor:pointer;padding:0 8px;font-size:1.05rem;line-height:1;display:flex;align-items:center;justify-content:center;min-width:34px;transition:background .15s,transform .1s}.exercise-gap-field-shell__submit:hover{background:linear-gradient(180deg,#6366f124,#6366f138)}.exercise-gap-field-shell__submit:active{transform:scale(.96)}.exercise-gap-field-shell__mark{position:absolute;top:0;right:0;bottom:0;z-index:1;border-left:1px solid rgba(15,23,42,.08);padding:0 8px;display:flex;align-items:center;justify-content:center;font-size:1rem;min-width:34px;-webkit-user-select:none;user-select:none;background:inherit}.exercise-gap-field-shell__mark--clickable{cursor:pointer}.exercise-gap-field-shell__footer{border-top:1px solid rgba(99,102,241,.14);padding:1px 6px 3px;display:flex;justify-content:center;background:#ffffff73}.exercise-gap-field{box-sizing:border-box;min-width:60px;max-width:min(280px,100%);border:2px solid #c7d2fe;border-radius:8px;padding:4px 8px;font-size:.85rem;font-family:inherit;line-height:1.35;background:#fff;color:#1e293b;outline:none;text-align:center;vertical-align:middle;transition:border-color .2s,background .2s,box-shadow .2s;resize:none;overflow:hidden;white-space:pre-wrap;word-break:break-word;overflow-wrap:anywhere;-webkit-appearance:none;-moz-appearance:none;appearance:none}.exercise-gap-field--embedded{border:none;border-radius:0;box-shadow:none;display:block;width:100%;max-width:none;box-sizing:border-box;background:transparent;overflow-wrap:break-word}.exercise-gap-field--embedded.exercise-gap-field--with-suffix{padding-right:36px}.exercise-gap-field--embedded.exercise-gap-field--draggable{max-width:none;min-width:0}.exercise-gap-field--embedded:focus{box-shadow:none}.exercise-gap-field:focus{border-color:#818cf8;box-shadow:0 0 0 3px #6366f11f}.exercise-gap-field--draggable{min-width:48px;max-width:min(180px,100%);cursor:pointer}.exercise-gap-submit{flex-shrink:0;border:none;background:none;cursor:pointer;font-size:.95rem;line-height:1;padding:4px 2px;margin-top:2px}.exercise-gap-mark{flex-shrink:0;font-size:1rem;-webkit-user-select:none;user-select:none;margin-top:2px}.exercise-gap-mark--clickable{cursor:pointer}.exercise-answer-peek-btn--inline{border:none;background:transparent;color:#4338ca;padding:1px 4px;margin:0;font-size:.64rem;letter-spacing:.01em}.exercise-answer-peek-btn--inline:hover{background:#6366f11a;border-color:transparent}.exercise-answer-peek-btn--inline[aria-pressed=true]{background:transparent;color:#047857}.exercise-answer-peek-btn{flex-shrink:0;border:1.5px solid #bfdbfe;background:#eff6ff;color:#1d4ed8;border-radius:8px;padding:2px 8px;font-size:.68rem;font-weight:700;line-height:1.35;cursor:pointer;white-space:nowrap;margin-top:2px;font-family:inherit;transition:background .15s,border-color .15s}.exercise-answer-peek-btn:hover{background:#dbeafe;border-color:#93c5fd}.exercise-answer-peek-btn[aria-pressed=true]{background:#ecfdf5;border-color:#6ee7b7;color:#047857}@media(max-width:480px){.exercise-action-bar{flex-direction:column;align-items:stretch}.exercise-game-btn,.exercise-status-pill{width:100%;justify-content:center}}