.aec-wrap{--aec-navy:#14213d;--aec-teal:#178f84;--aec-gold:#ffc857;--aec-ink:#1f2937;--aec-muted:#667085;--aec-line:#e4e9ef;max-width:1180px;margin:0 auto;padding:24px 16px;color:var(--aec-ink);font-family:inherit}
.aec-wrap *{box-sizing:border-box}.aec-wrap button{font:inherit}.aec-hero{position:relative;overflow:hidden;background:linear-gradient(130deg,#111b35 0%,#17345a 52%,#178f84 100%);color:#fff;border-radius:26px;padding:46px 34px 34px;margin-bottom:20px;box-shadow:0 18px 48px rgba(20,33,61,.18)}
.aec-hero:after{content:"♪ ♫ ♪";position:absolute;right:-12px;top:-38px;color:rgba(255,255,255,.08);font-size:9rem;letter-spacing:-.08em;transform:rotate(-9deg);pointer-events:none}.aec-kicker{font-size:.78rem;font-weight:900;letter-spacing:.16em;text-transform:uppercase;color:#a9eee7}.aec-hero h2{position:relative;z-index:1;font-size:clamp(2rem,4vw,3.25rem);line-height:1.06;margin:.4rem 0 .75rem;color:#fff}.aec-hero p{position:relative;z-index:1;font-size:1.08rem;line-height:1.65;margin:0;max-width:810px}.aec-hero-stats{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;margin-top:25px}.aec-hero-stats span{display:flex;align-items:baseline;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:8px 13px}.aec-hero-stats strong{font-size:1.12rem;color:#fff}
.aec-instructions{display:flex;gap:14px;align-items:flex-start;background:#f0f9f8;border:1px solid #cfe9e6;border-radius:16px;padding:17px 19px;margin-bottom:22px}.aec-instructions-icon{font-size:1.55rem}.aec-instructions strong{color:#126f67}.aec-instructions p{margin:3px 0 0;color:#50636a;line-height:1.55}
.aec-filters{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 22px}.aec-filter{border:1px solid #d8e0e8;background:#fff;color:var(--aec-navy);border-radius:999px;padding:9px 16px;cursor:pointer;font-weight:800;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}.aec-filter:hover{transform:translateY(-1px);box-shadow:0 5px 14px rgba(20,33,61,.09)}.aec-filter.is-active{background:var(--aec-navy);color:#fff;border-color:var(--aec-navy)}
.aec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:19px}.aec-card{background:#fff;border:1px solid var(--aec-line);border-radius:20px;padding:21px;box-shadow:0 7px 22px rgba(20,33,61,.065);transition:box-shadow .2s ease,border-color .2s ease}.aec-card.is-open{grid-column:1/-1;border-color:#b8dcd8;box-shadow:0 16px 44px rgba(20,33,61,.12)}.aec-card[hidden]{display:none!important}.aec-card-head{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:9px}.aec-level{font-weight:900;font-size:.76rem;letter-spacing:.04em;padding:5px 10px;border-radius:999px;background:#e3f5f3;color:#116f67}.aec-artist{font-size:.9rem;color:var(--aec-muted);text-align:right}.aec-card h3{font-size:1.5rem;line-height:1.2;margin:8px 0;color:var(--aec-navy)}.aec-focus{color:#566371;line-height:1.5;min-height:46px;margin:8px 0}.aec-card-meta{font-size:.84rem;color:#7a8595;margin:11px 0 15px}.aec-open,.aec-check-cloze{border:0;border-radius:11px;padding:10px 15px;font-weight:850;cursor:pointer;background:var(--aec-navy);color:#fff;transition:transform .18s ease,box-shadow .18s ease}.aec-open:hover,.aec-check-cloze:hover{transform:translateY(-1px);box-shadow:0 7px 16px rgba(20,33,61,.18)}
.aec-activity{margin-top:20px;padding-top:20px;border-top:1px solid #edf0f4}.aec-activity[hidden]{display:none}.aec-video{position:relative;display:grid;place-items:center;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:15px;background:radial-gradient(circle at 75% 20%,rgba(255,200,87,.22),transparent 24%),linear-gradient(135deg,#17233f,#1b6e72)}.aec-video iframe{width:100%;height:100%;border:0}.aec-load-video{display:flex;flex-direction:column;align-items:center;gap:6px;border:0;background:transparent;color:#fff;cursor:pointer;padding:30px}.aec-load-video>span:first-child{display:grid;place-items:center;width:68px;height:68px;padding-left:5px;background:#fff;color:var(--aec-teal);border-radius:50%;font-size:1.8rem;box-shadow:0 12px 30px rgba(0,0,0,.23);transition:transform .2s ease}.aec-load-video:hover>span:first-child{transform:scale(1.07)}.aec-load-video>span:nth-child(2){font-size:1.1rem;font-weight:850;margin-top:5px}.aec-load-video small{opacity:.76}.aec-video-fallback{color:#fff;font-weight:800;text-decoration:none;border:1px solid rgba(255,255,255,.45);border-radius:11px;padding:12px 16px}
.aec-mission{display:flex;gap:13px;align-items:flex-start;margin-top:18px;padding:16px 18px;border-radius:14px;background:#fff8e8;border:1px solid #f7dfaa}.aec-mission>span{font-size:1.35rem}.aec-mission strong{color:#765211}.aec-mission p{margin:3px 0 0;line-height:1.5;color:#665735}.aec-task{margin-top:24px}.aec-task-heading{display:flex;gap:11px;align-items:flex-start;margin-bottom:14px}.aec-task-heading>span{font-size:1.42rem}.aec-task h4{font-size:1.25rem;margin:0;color:var(--aec-navy)}.aec-task-heading p{margin:2px 0 0;color:var(--aec-muted);font-size:.91rem}
.aec-questions{display:grid;gap:15px}.aec-question{min-width:0;margin:0;border:1px solid var(--aec-line);border-radius:15px;padding:16px;background:#fbfcfd}.aec-question legend{display:flex;gap:10px;align-items:flex-start;width:100%;font-weight:800;line-height:1.45;color:#263348}.aec-question legend>span{flex:0 0 26px;display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--aec-navy);color:#fff;font-size:.78rem}.aec-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-top:13px}.aec-options button{display:flex;gap:9px;align-items:center;text-align:left;border:1px solid #d7dfe8;background:#fff;color:#344054;border-radius:11px;padding:10px 11px;cursor:pointer;line-height:1.35;transition:border-color .15s ease,box-shadow .15s ease,background .15s ease}.aec-options button:hover{border-color:#94aaa9;box-shadow:0 3px 10px rgba(20,33,61,.06)}.aec-option-letter{flex:0 0 25px;display:grid;place-items:center;width:25px;height:25px;border-radius:7px;background:#eef2f6;font-size:.78rem;font-weight:900;color:var(--aec-navy)}.aec-options button.is-correct{border:2px solid #16836f;background:#effaf7}.aec-options button.is-correct .aec-option-letter{background:#16836f;color:#fff}.aec-options button.is-wrong{border:2px solid #c43f4f;background:#fff4f5}.aec-options button.is-wrong .aec-option-letter{background:#c43f4f;color:#fff}.aec-feedback{margin-top:10px;font-weight:800;min-height:1.25em}.aec-feedback.is-success{color:#11715f}.aec-feedback.is-error{color:#ad2f40}.aec-explanation{margin-top:7px;padding:10px 12px;border-left:3px solid #96aaa8;background:#f1f5f5;color:#526260;line-height:1.5;border-radius:0 8px 8px 0}
.aec-cloze-task{border-top:1px solid var(--aec-line);padding-top:22px}.aec-cloze{line-height:2.55;white-space:pre-wrap;margin:12px 0}.aec-cloze input{width:132px;max-width:42%;border:1px solid #bdc8d4;border-radius:8px;padding:7px 8px;background:#fff}.aec-cloze input.is-correct{border:2px solid #16836f;background:#effaf7}.aec-cloze input.is-wrong{border:2px solid #c43f4f;background:#fff4f5}.aec-actions{display:flex;gap:8px;flex-wrap:wrap}.aec-secondary{border:1px solid #d5dee7;border-radius:10px;padding:9px 13px;font-weight:800;cursor:pointer;background:#fff;color:var(--aec-navy)}
.aec-score{margin-top:24px;padding:17px 18px;border-radius:15px;background:var(--aec-navy);color:#fff}.aec-score>div:first-child{display:flex;justify-content:space-between;gap:15px;align-items:center}.aec-score strong{color:#fff}.aec-score-value{font-size:1.15rem;font-weight:900;color:#fff}.aec-progress{height:8px;margin:11px 0;border-radius:99px;background:rgba(255,255,255,.18);overflow:hidden}.aec-progress span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#4ed9ca,var(--aec-gold));transition:width .25s ease}.aec-score-message{margin:0 0 12px;color:#dce7f2}.aec-reset{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.28);color:#fff}
@media(max-width:820px){.aec-grid{grid-template-columns:1fr}.aec-card.is-open{grid-column:auto}.aec-options{grid-template-columns:1fr}.aec-focus{min-height:0}.aec-hero{padding:36px 24px}.aec-card{padding:18px}}
@media(max-width:480px){.aec-wrap{padding:17px 10px}.aec-hero{border-radius:20px;padding:30px 20px}.aec-hero-stats{gap:7px}.aec-hero-stats span{font-size:.84rem;padding:7px 10px}.aec-card-head{align-items:flex-start;flex-direction:column}.aec-artist{text-align:left}.aec-mission,.aec-instructions{padding:14px}.aec-question{padding:14px}.aec-cloze input{max-width:48%}}
@media(prefers-reduced-motion:reduce){.aec-wrap *{scroll-behavior:auto!important;transition:none!important}}