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0}.bl{bottom:12px;left:12px;border-width:0 0 3px 3px;border-radius:0 0 0 7px}.br{bottom:12px;right:12px;border-width:0 3px 3px 0;border-radius:0 0 7px}.camera-actions{display:flex;gap:12px}.file-label{position:relative;flex:1;overflow:hidden;font-size:12px;padding:10px;cursor:pointer}.file-label input{position:absolute;inset:0;opacity:0;width:100%;cursor:pointer}.file-label:focus-within{outline:3px solid var(--yellow)}.photo-status{font-size:11px;color:var(--muted);margin:12px 0}.analysis-card{display:flex;gap:17px;align-items:center;padding:15px;margin:16px 0}.analysis-card img{width:78px;height:100px;object-fit:contain}.analysis-card h2{font-size:16px;margin-bottom:7px}.analysis-card p{font-size:12px;color:var(--muted)}.chat-page{max-width:600px;margin:auto}.chat-title{display:flex;align-items:center;gap:12px;margin-bottom:18px}.chat-title>img{height:45px;width:45px;object-fit:contain}.chat-title h1{font-size:19px;letter-spacing:0}.chat-title p{font-size:11px;color:var(--muted)}.chat-title .mini-tag{margin-left:auto}.chat-banner.compact{padding:12px 20px;max-height:95px}.compact h2{font-size:16px}.compact>img{height:95px;width:110px}.chat-messages{padding-top:22px;display:flex;flex-direction:column;gap:19px}.message-row{display:flex;align-items:flex-start;gap:10px;max-width:92%}.message-row>img{width:31px;height:33px;object-fit:contain}.message-row>p,.message-content{padding:12px 15px;background:white;border:1px solid #f0f3f8;box-shadow:0 3px 8px #111e3a05;border-radius:3px 15px 15px;font-size:13px}.message-row.mine{margin-left:auto;align-self:flex-end;max-width:75%}.message-row.mine>p{background:var(--blue);color:white;border-color:var(--blue);border-radius:15px 3px 15px 15px}.message-content{display:flex;align-items:center;gap:15px}.chat-fraction{height:75px;width:75px;object-fit:contain}.chat-suggestions{display:flex;gap:7px;flex-wrap:wrap;margin:24px 0 15px}.chat-suggestions button{border:1px solid 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@media(min-width:1450px){.hero{min-height:500px}.hero-art{height:480px}.admin-content{padding:34px}.admin-layout{grid-template-columns:250px 1fr}.metric-grid{gap:18px}.metric{padding:23px 17px}.chart-card{padding:22px}}
@media(max-width:1150px){.wrap{width:calc(100% - 40px)}.site-header{gap:20px}.site-header nav{gap:18px;font-size:12px}.brand img{width:155px}.hero-copy{padding:18px 20px}.wordmark span{font-size:65px}.wordmark strong{font-size:68px}.hero-art{height:390px}.hero{min-height:410px}.hero-copy p{font-size:16px}.hero-copy h1{font-size:22px}.hero-buttons{gap:12px}.hero-buttons .btn{min-width:0;padding:12px 18px;font-size:13px}.feature-grid{grid-template-columns:1fr 1fr}.game-panel{grid-column:1/-1}.game-flex{justify-content:space-around}.game-list{display:flex;flex:initial;gap:35px;align-items:center}.game-list>div{margin:0}.trophy-block{width:220px;display:flex;align-items:center;gap:12px}.trophy-block>img{width:80px;height:100px}.trophy-block p{display:none}.trophy-block .btn{width:auto}.admin-layout{grid-template-columns:190px 1fr}.admin-side{padding:15px 10px}.admin-side nav a{font-size:12px;gap:10px;padding:11px}.admin-side .brand img{width:165px}.admin-content{padding:22px}.metric-grid{grid-template-columns:repeat(3,1fr)}.chart-grid{grid-template-columns:1fr 1fr}.chart-card:last-child{grid-column:1/-1}.donut-area{min-height:180px;gap:40px}.admin-tables{grid-template-columns:1fr}.student-layout{grid-template-columns:210px 1fr}.student-main{padding:25px}.student-side{padding:20px 12px}.student-top{padding:15px 25px}.auth-form-area{padding:35px}.auth-art{padding:30px 22px}.plan-grid{gap:15px}.plan-card{padding:23px 17px}}
@media(max-width:780px){.wrap{width:calc(100% - 32px)}.site-header{min-height:80px;gap:10px;flex-wrap:wrap}.brand img{width:137px;height:55px}.site-header .header-actions{margin-left:auto;gap:7px}.header-actions .btn{padding:9px 12px;font-size:11px;min-height:35px}.header-actions .outline{display:none}.menu-toggle{display:flex;order:3;width:35px;height:35px}.site-header nav{display:none;position:absolute;top:72px;right:0;left:0;background:#fff;border:1px solid var(--line);padding:18px;border-radius:13px;box-shadow:var(--shadow);flex-wrap:wrap}.site-header nav.is-open{display:flex}.hero{display:flex;flex-direction:column;min-height:0}.hero-art{height:290px;width:100%;max-width:450px}.hero-art:before{left:0;width:100%}.hero-copy{padding:22px 5px 28px}.wordmark span{font-size:47px}.wordmark strong{font-size:64px;border-width:6px;padding-bottom:8px}.wordmark{letter-spacing:-2px;margin-bottom:19px}.wordmark strong:after{bottom:-18px;border-top-width:17px;border-right-width:17px}.hero-copy 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.demo-label{display:none}.student-top>.icon-btn{width:34px;height:34px}.points{padding:6px 8px;font-size:12px;gap:3px}.points .icon{width:17px}.student-main{padding:18px 16px 95px}.student-home{max-width:480px}.welcome{margin-bottom:16px}.welcome h1{font-size:20px}.welcome p{font-size:11px}.welcome-avatar{width:40px;height:40px}.photo-banner{padding:14px 12px;gap:9px;border-radius:17px}.photo-banner>img{width:76px;height:81px}.photo-banner h2{font-size:17px}.photo-banner p{font-size:10px}.photo-banner small{font-size:8px}.photo-banner .go{width:26px;height:26px}.student-home .subject-grid{gap:12px;margin:13px 0}.student-home .subject{padding:16px 8px 12px}.student-home .subject-icon{width:55px;height:55px}.student-home .math-icon{font-size:27px;padding-top:5px}.student-home .subject strong{font-size:16px}.student-home .subject>span:not(.subject-icon){font-size:10px}.student-home .subject .go{width:24px;height:24px}.chat-banner{gap:9px;padding:11px 12px}.chat-banner 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.subject{padding:18px 7px}.subject-page .subject strong{font-size:16px}.subject-page .subject>span:not(.subject-icon){font-size:11px}.lesson h1{font-size:30px;margin:11px 0}.lesson-intro{font-size:13px}.lesson-example{padding:18px}.fraction-example{gap:30px}.fraction-example img{width:65%;height:190px}.fraction{font-size:37px;width:48px}.example-description{font-size:12px;margin-top:17px}.tip{padding:13px;gap:8px}.tip p{font-size:11px}.lesson-actions .btn{font-size:12px;padding:11px 15px}.reading-example{grid-template-columns:1fr;gap:14px}.reading-example>img{height:200px}.reading-text{font-size:13px;padding:17px}.camera-page h1{font-size:22px}.camera-stage{aspect-ratio:1}.camera-actions{gap:8px}.file-label{font-size:10px;gap:7px}.file-label .icon{width:18px}.analysis-card{padding:14px;gap:11px}.analysis-card img{width:67px;height:90px}.chat-title h1{font-size:16px}.chat-title>img{width:35px;height:38px}.chat-title{gap:8px}.chat-title 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p{font-size:9px}.chart-grid{grid-template-columns:1fr}.chart-card:last-child{grid-column:auto}.chart-card{padding:19px}.chart-card h2{font-size:14px}.chart-legend{font-size:10px}.donut-area{gap:25px}.admin-tables{gap:16px}.admin-tables>.panel{padding:16px}.admin-tables table{min-width:360px}.admin-footer{font-size:9px}.preview-caption{font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

[hidden]{display:none!important}.exercise-panel{padding:30px;margin:22px 0}.exercise-meta{display:flex;justify-content:space-between;color:#576889;font-size:13px}.exercise-track{height:8px;background:#eaf0fb;border-radius:9px;margin:12px 0 25px;overflow:hidden}.exercise-track span{display:block;width:20%;height:100%;background:var(--blue)}.exercise-panel h2{font-size:22px;text-align:center}.exercise-illustration{display:flex;align-items:center;justify-content:center;gap:20px;margin:24px auto;max-width:600px}.exercise-illustration img{width:190px;height:180px;object-fit:contain}.exercise-illustration p{font-size:15px;line-height:1.7}.answer-options{border:0;padding:0;display:grid;gap:12px}.answer-options legend{font-size:12px;color:#687894;margin-bottom:12px}.answer-option{display:flex;align-items:center;gap:12px;padding:15px 18px;border:2px solid #e2e9f5;border-radius:13px;cursor:pointer}.answer-option:has(input:checked){border-color:var(--blue);background:#edf4ff}.answer-option input{accent-color:var(--blue)}.answer-option span{color:#7181a0}.answer-option b{font-size:18px}.exercise-panel .lesson-actions{margin-top:22px}@media(max-width:780px){.exercise-panel{padding:18px}.exercise-panel h2{font-size:18px}.exercise-illustration{flex-direction:column}.exercise-illustration img{height:150px}.exercise-illustration p{font-size:13px}.answer-option{padding:12px}.answer-option b{font-size:16px}}

.subject-icon img{display:block;width:100%;height:100%;object-fit:contain}