.study-helper{position:fixed;right:24px;bottom:max(22px,env(safe-area-inset-bottom));z-index:80;font-size:13px}.study-helper[hidden],.helper-panel[hidden],.helper-question[hidden]{display:none}.helper-launcher{display:flex;align-items:center;gap:10px;margin-left:auto;padding:12px 18px 12px 12px;border:1px solid #d2dfbd;border-radius:40px;background:#f4f9e8;color:#294431;box-shadow:0 6px 24px #203c2e24;cursor:pointer;text-align:left;transition:transform .18s,box-shadow .18s}.helper-launcher:hover{transform:translateY(-2px);box-shadow:0 8px 28px #203c2e30}.helper-robot{display:grid;place-items:center;width:40px;height:40px;flex-shrink:0;border-radius:50%;background:#e4efce;font-size:27px}.helper-launcher>span:last-child{font-size:13px;font-weight:650;line-height:1.6}.helper-launcher small{display:block;font-size:10px;font-weight:400;color:#688053}.helper-panel{width:390px;height:min(660px,calc(100dvh - 125px));min-height:280px;margin-bottom:12px;display:flex;flex-direction:column;border:1px solid #dce5d2;border-radius:18px;background:#fff;box-shadow:0 16px 70px #142a2433;overflow:hidden}.helper-header{display:flex;align-items:center;gap:10px;padding:15px 16px;background:#f1f6e8;border-bottom:1px solid #e2e9d9;flex-shrink:0}.helper-header h2{font-size:15px;font-weight:650;margin:0}.helper-header p{font-size:11px;color:#647a57;margin:3px 0 0}.helper-header .icon-button{width:34px;height:34px;flex-shrink:0}.helper-settings{padding:12px 16px 10px;border-bottom:1px solid #edf0e7;flex-shrink:0}.helper-settings label{display:block;font-size:10px;color:#6c7d60;margin-bottom:5px}.helper-settings select{width:100%;font-size:12px;padding:7px 9px}.helper-settings select:disabled{opacity:1;background:#f7f9f3;color:#4b6140}.helper-layers{display:flex;gap:5px;margin-top:9px}.helper-layers button{flex:1;font-size:10px;padding:7px 3px;border:1px solid #e1e8d8;border-radius:7px;color:#627951;white-space:nowrap}.helper-layers button.active{background:#eaf2d9;color:#314b2a;border-color:#b5c99a}.helper-layers button:disabled{color:#8b9583;cursor:not-allowed}.helper-settings p{font-size:10px;color:#718165;line-height:1.6;margin:7px 0 0}.helper-question{display:flex;align-items:center;gap:9px;background:#fafbf7;padding:10px 16px;border-bottom:1px solid #edf0e7;flex-shrink:0}.helper-question>span{font-size:11px;line-height:1.6;color:#5d7052;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;flex:1}.helper-question .btn{font-size:11px;white-space:nowrap;padding:7px 9px}.helper-messages{flex:1;min-height:60px;overflow:auto;overscroll-behavior:contain;padding:16px}.helper-messages .chat-message{gap:8px;margin-bottom:16px}.helper-messages .chat-avatar{width:28px;height:28px;font-size:18px}.helper-messages .message-content{min-width:0;max-width:calc(100% - 36px)}.helper-messages .message-text{font-size:12px;line-height:1.85;overflow-wrap:anywhere;white-space:pre-wrap}.helper-messages .message-label{font-size:10px;margin-bottom:4px}.helper-messages .chat-refs a{font-size:10px;line-height:1.6}.helper-welcome{text-align:center;padding:13px 4px}.helper-welcome>span{font-size:34px}.helper-welcome h3{font-size:15px;margin:10px 0 6px}.helper-welcome p{font-size:12px;line-height:1.9;color:#738367}.helper-welcome button{margin-top:13px;border:1px solid #dfe8d3;border-radius:8px;padding:8px 11px;font-size:11px;color:#516d42;background:#f8faf3}.helper-pending{font-size:12px;color:#6f865a;margin:8px 0}.helper-compose{padding:12px 14px 8px;flex-shrink:0}.helper-compose textarea{font-size:12px;min-height:52px;max-height:100px;resize:vertical;line-height:1.6}.helper-compose .compose-row{align-items:center}.helper-compose .compose-caption{margin:6px 0 0;font-size:10px;color:#78866d}.helper-footer{display:flex;justify-content:space-between;gap:12px;padding:4px 16px 12px;flex-shrink:0}.helper-footer button,.helper-footer a{font-size:10px;color:#708463;display:flex;align-items:center;gap:4px}.helper-footer button:disabled{opacity:.5}.helper-footer .icon{width:12px;height:12px}.study-helper :focus-visible{outline:2px solid #617e43;outline-offset:3px}body:has(.study-helper:not([hidden])) .footer{padding-bottom:110px}body:has(.study-helper.is-open:not([hidden])) .quiz-layout{scroll-margin-bottom:100px}
@media(min-width:1100px){
 body:has(.study-helper.is-open:not([hidden])) .main-shell:has(.quiz-layout){margin-right:420px}
 body:has(.study-helper.is-open:not([hidden])) .main-shell:has(.quiz-layout) .search-top{display:none}
 body:has(.study-helper.is-open:not([hidden])) .main-shell:has(.quiz-layout) .main-content{padding-left:24px;padding-right:24px}
 body:has(.study-helper.is-open:not([hidden])) .quiz-layout{grid-template-columns:minmax(0,1fr);gap:16px}
 body:has(.study-helper.is-open:not([hidden])) .quiz-layout>.quiz-aside{grid-column:auto;position:static;display:flex;align-items:center;gap:12px;padding:14px}
 body:has(.study-helper.is-open:not([hidden])) .quiz-aside .course-art,body:has(.study-helper.is-open:not([hidden])) .quiz-aside p,body:has(.study-helper.is-open:not([hidden])) .equipment-aside{display:none}
 body:has(.study-helper.is-open:not([hidden])) .quiz-aside .quiz-dots{margin:0 0 0 auto;max-width:200px;justify-content:flex-end}
 body:has(.study-helper.is-open:not([hidden])) .equipment-inline{display:flex;width:100%;align-items:center;gap:10px;text-align:left;padding:10px;border:1px solid #e5ecd9;border-radius:10px;margin-bottom:18px}
 body:has(.study-helper.is-open:not([hidden])) .equipment-inline img{width:44px;height:44px;object-fit:contain}
 body:has(.study-helper.is-open:not([hidden])) .equipment-inline>span:nth-child(2){flex:1}
 body:has(.study-helper.is-open:not([hidden])) .equipment-inline b,body:has(.study-helper.is-open:not([hidden])) .equipment-inline small{display:block;font-size:10px;color:#70885b}
 body:has(.study-helper.is-open:not([hidden])) .equipment-inline-action{font-size:10px;color:#70885b}
}
@media(max-width:600px){.study-helper{right:12px;bottom:max(12px,env(safe-area-inset-bottom))}.helper-launcher{padding:8px 13px 8px 8px;gap:8px}.helper-launcher .helper-robot{width:34px;height:34px;font-size:24px}.helper-launcher>span:last-child{font-size:12px}.helper-launcher small{font-size:9px}.helper-panel{width:calc(100vw - 24px);height:min(620px,calc(100dvh - 98px));margin-bottom:8px;border-radius:15px}.helper-header{padding:11px 13px}.helper-settings{padding:9px 13px}.helper-settings p{font-size:9px}.helper-messages{padding:13px}.helper-question{padding:8px 13px}.helper-compose{padding:9px 12px 6px}.helper-compose textarea{font-size:16px}.helper-settings select{font-size:16px}.helper-footer{padding:4px 13px 10px}.helper-panel:focus-within{max-height:calc(100dvh - 98px)}}
@media(prefers-reduced-motion:reduce){.helper-launcher{transition:none}.helper-launcher:hover{transform:none}}
@media(max-height:600px){.helper-panel{min-height:0}.helper-panel:focus-within .helper-settings{display:none}.helper-header p{display:none}.helper-question{padding-top:6px;padding-bottom:6px}.helper-messages{min-height:40px}}
@media(max-height:450px){.helper-panel:focus-within .helper-question,.helper-panel:focus-within .helper-footer,.helper-panel:focus-within .compose-caption{display:none}}
@media print{.study-helper{display:none!important}body:has(.study-helper) .main-shell{margin-right:0}}