@import url('https://fonts.googleapis.com/css2?family=Golos+Text:wght@400;500;600;700;800&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{font-family:'Golos Text',Arial,sans-serif;color:#182132;background:#f3f5fa;font-size:16px;--blue:#244cf4;--ink:#182132;--muted:#657089;--line:#dce2ed;--green:#157052;--red:#b32845}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{outline-offset:4px}button{cursor:pointer}button:disabled{cursor:default;opacity:.65}a{color:var(--blue)}.topbar{height:92px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 5vw;gap:24px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-size:28px;font-weight:800;letter-spacing:-1px}.brand-symbol{background:var(--blue);color:#fff;border-radius:11px;width:40px;height:40px;text-align:center;line-height:36px;font-size:36px;font-weight:500}.brand-sub{font-size:12px;font-weight:500;letter-spacing:1.7px;margin-left:18px;color:var(--muted)}nav{display:flex;gap:8px}.nav-link{background:none;border:0;border-radius:8px;padding:12px 17px;color:var(--muted);font-size:14px}.nav-link.active{background:#edf1ff;color:var(--blue);font-weight:600}main{max-width:1400px;margin:0 auto;padding:48px 5vw 64px}.workspace{display:grid;grid-template-columns:260px minmax(0,1fr);gap:52px}.eyebrow{font-size:12px;letter-spacing:1.8px;font-weight:700;color:var(--muted)}.rail h1{font:700 28px/1.32 'Manrope',Arial,sans-serif;letter-spacing:-1px;margin:18px 0 32px}.path-summary strong{font:700 40px 'Manrope',sans-serif}.path-summary strong span{font-size:24px;color:#8a94a8}.path-summary p{font-size:14px;color:var(--muted);margin:8px 0 18px}.progress-track{height:5px;background:#dce2ed;border-radius:10px;overflow:hidden}.progress-track span{height:100%;display:block;background:var(--blue);transition:width .3s}.rail-block{border-left:2px solid #d6ddea;padding:8px 0 12px 20px;margin-top:26px}.rail-block.current{border-color:var(--blue)}.rail-block small{font-size:12px;letter-spacing:1px;color:var(--muted)}.rail-block h2{font-size:18px;margin:9px 0 5px}.rail-block p{font-size:14px;margin:0;color:var(--muted)}.training{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;min-width:0;box-shadow:0 12px 45px #17254605}.section-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.source-tag{font-size:12px;color:var(--muted);background:#f3f5fa;padding:7px 10px;border-radius:6px}.level-title{font:800 clamp(26px,3vw,40px)/1.2 'Manrope',Arial,sans-serif;letter-spacing:-1.5px;margin:24px 0 10px}.subtitle{color:var(--muted);line-height:1.6;font-size:15px;margin:0 0 26px}.exercise-preview{background:#f4f6fc;border:1px solid #e6eaf4;border-radius:14px;min-height:245px;padding:22px;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;gap:18px}.preview-count{align-self:flex-start;font:500 13px monospace;color:var(--muted)}.big-equation{font:600 clamp(34px,5vw,66px)/1.3 'Manrope',Arial,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:-1px;white-space:nowrap}.big-equation span{color:#8994ac;font-weight:400;padding:0 6px}.big-equation b{color:var(--blue)}.preview-caption{font-size:14px;text-align:center;color:var(--muted)}.setup{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:25px 0}fieldset{border:0;padding:0;margin:0;min-width:0}legend{font-size:14px;font-weight:500;margin-bottom:10px}.choices{display:flex;background:#f1f3f8;padding:4px;border-radius:9px;gap:3px}.choices label{flex:1;text-align:center;font-size:14px;cursor:pointer;padding:11px 8px;border-radius:7px;position:relative}.choices label:has(input:checked){background:#fff;box-shadow:0 1px 4px #152b4b18;color:var(--blue)}.choices input{position:absolute;opacity:0;width:1px;height:1px}.choices label:has(input:focus-visible){outline:2px solid var(--blue)}.primary{background:var(--blue);color:#fff;border:1px solid var(--blue);padding:14px 22px;font-weight:600;border-radius:9px;min-height:48px}.primary:hover{background:#1c3ed1}.start-button{width:100%}.local-note{font-size:12px;color:var(--muted);text-align:center;margin:16px 0 0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:900px){.brand-sub{display:none}.workspace{grid-template-columns:190px minmax(0,1fr);gap:24px}.rail h1{font-size:23px}.training{padding:24px}.setup{grid-template-columns:1fr}}@media(max-width:650px){.topbar{height:auto;min-height:80px;padding:16px 5vw;flex-wrap:wrap;gap:12px}nav{width:100%;justify-content:space-between}.nav-link{padding:10px 13px}.workspace{display:block}.rail{display:none}main{padding:24px 4vw}.training{padding:22px 18px;border-radius:14px}.big-equation{font-size:44px}.big-equation span{padding:0 2px}.exercise-preview{min-height:220px}.level-title{letter-spacing:-.7px}.source-tag{font-size:12px}}

/* Training, roadmap, and results */
.rail-block{display:block;width:100%;text-align:left;background:none;border-top:0;border-right:0;border-bottom:0;color:var(--ink);font-family:inherit}.rail-block:hover h2{color:var(--blue)}.block-ticks{display:flex;gap:4px;margin-top:12px}.block-ticks i{width:12px;height:4px;background:#d9dfeb;border-radius:2px}.block-ticks i.done{background:var(--blue)}.rail>.text-button{margin-top:30px;text-align:left;font-size:14px;padding-left:0}.secondary{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:#fff;border:1px solid #cbd3e2;border-radius:9px;padding:13px 18px;min-height:46px;font-weight:500;color:var(--ink);text-decoration:none}.secondary:hover{background:#f1f4fb}.compact{padding:8px 14px;min-height:38px;font-size:14px}.text-button{border:0;background:none;padding:10px;color:var(--blue);font-size:14px;font-weight:500}.source-tag{border:0;cursor:pointer}.preview-count{width:100%;display:flex;justify-content:space-between;gap:12px}.preview-page{font-family:inherit;font-size:12px}.column-setup{display:flex;justify-content:space-between;align-items:center;margin:-5px 0 22px;gap:12px;font-size:14px}.column-setup select{padding:7px 28px 7px 12px;background:#fff;border:1px solid var(--line);border-radius:7px;min-width:120px}.start-button{display:flex;justify-content:center;gap:22px;align-items:center}.under-start{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:12px;margin-top:12px;line-height:1.5}.tip{border-top:1px solid var(--line);margin-top:25px;padding:17px 0 4px;font-size:14px}.tip summary{cursor:pointer;color:var(--muted)}.tip p{font-size:16px;line-height:1.65;margin:15px 0 5px}.column-status{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;font-size:12px;color:var(--muted);margin:24px 0 0}.column-status .passed{color:var(--green)}.session{max-width:1150px;margin:0 auto}.card-session{max-width:850px}.session-heading{display:flex;justify-content:space-between;align-items:center;gap:20px}.session-heading h1{font:700 clamp(22px,3vw,32px)/1.3 Manrope,Arial,sans-serif;margin:12px 0 0;letter-spacing:-.8px}.timer-block{text-align:right;flex-shrink:0}.timer-block span{display:block;color:var(--muted);font-size:12px;margin-bottom:7px}.timer-block strong{font:500 32px/1.2 ui-monospace,monospace;letter-spacing:-1.5px}.session-progress{display:flex;align-items:center;gap:20px;margin:28px 0;color:var(--muted);font-size:14px;font-variant-numeric:tabular-nums}.session-progress>.progress-track{flex:1}.flashcard{border-radius:20px;border:1px solid var(--line);background:#fff;padding:30px;min-height:380px;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:0 14px 48px #1c304207}.card-marker{align-self:stretch;display:flex;justify-content:space-between;color:var(--muted);font-size:12px;letter-spacing:1px;margin-bottom:25px}.flashcard .big-equation{font-size:clamp(44px,8vw,86px);margin:0 0 30px}.answer-line{display:flex;align-items:center;gap:8px}#answer-form{max-width:100%;width:420px}#answer{width:100%;min-width:0;font:600 32px Manrope,Arial,sans-serif;border:2px solid #dce2ef;border-radius:10px;padding:12px 16px;text-align:center;color:var(--ink);background:#f8faff}#answer:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px #244cf413}#answer::placeholder{font:400 18px inherit;color:#8791a6}.sign-button{border:1px solid var(--line);background:#fff;color:var(--ink);font-size:24px;border-radius:9px;height:65px;width:46px;flex-shrink:0}.answer-submit{font-size:24px;height:65px;padding:10px 18px;flex-shrink:0}.answer-submit span{font-size:14px}.feedback{min-height:30px;margin-top:22px;color:var(--muted);font-size:16px;text-align:center;font-variant-numeric:tabular-nums}.feedback.correct{color:var(--green);font-weight:600}.feedback.incorrect{color:var(--red);font-weight:500}.session-bottom{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-top:16px;color:var(--muted);font-size:12px}.pause-panel{background:white;border:1px solid var(--line);border-radius:18px;min-height:380px;padding:45px 20px;display:flex;flex-direction:column;align-items:center;text-align:center}.pause-mark{font-size:50px;color:var(--blue)}.pause-panel p{color:var(--muted);line-height:1.5}.pause-panel .muted{font-size:14px}.math-sheet{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:start}.math-sheet.single{display:block;max-width:460px;margin:0 auto}.math-column{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 14px}.column-heading{display:flex;justify-content:space-between;gap:8px;font-size:12px;letter-spacing:.6px;color:var(--muted);padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:10px}.column-heading span{letter-spacing:0}.math-row{display:grid;grid-template-columns:22px minmax(0,1fr) 75px;gap:7px;align-items:center;padding:5px 0;font-family:ui-monospace,monospace;font-size:16px}.math-row .row-number{font-size:12px;color:#7d889e}.math-row label{text-align:right;white-space:nowrap}.math-row label span{color:#9aa4b6}.math-row input{width:100%;min-width:0;background:#f7f9fd;border:1px solid #dce3ee;border-radius:5px;padding:7px 4px;text-align:center;font-family:inherit;font-size:16px;min-height:36px}.math-row input:focus{outline:2px solid var(--blue);outline-offset:1px;background:#fff}.ten-divider{margin-top:12px;border-top:1px solid #ccd6e7;padding-top:16px}.sheet-submit{display:block;margin:24px auto;min-width:240px}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:30px}.page-heading h1,.program-page h1{font:800 clamp(28px,3.5vw,42px)/1.22 Manrope,Arial,sans-serif;letter-spacing:-1.2px;margin:15px 0}.page-heading p{font-size:16px;color:var(--muted);line-height:1.6;max-width:700px}.roadmap-total{font:600 70px/1 Manrope,Arial,sans-serif;color:var(--blue);white-space:nowrap}.roadmap-total span{font-size:26px;color:#8d98af}.program-note{display:flex;align-items:center;gap:22px;padding:22px 25px;border:1px solid #d7dff7;border-radius:12px;background:#eaf0ff;color:#354463;font-size:14px;line-height:1.6;margin-bottom:35px}.program-note strong{color:var(--ink);flex-shrink:0}.program-note .text-button{flex-shrink:0}.road-block{margin-top:42px;scroll-margin-top:20px}.road-block-title{display:flex;align-items:center;gap:16px;margin:0 0 22px}.road-block-title>span{font:600 22px ui-monospace,monospace;color:var(--blue);background:#e4eafe;padding:14px 16px;border-radius:11px}.road-block-title h2{font-size:24px;letter-spacing:-.5px;margin:0 0 5px}.road-block-title p{font-size:14px;color:var(--muted);margin:0}.level-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.level-card{background:white;border:1px solid var(--line);border-radius:13px;padding:20px;text-align:left;transition:border-color .15s,transform .15s;color:var(--ink)}.level-card:hover{border-color:var(--blue);transform:translateY(-2px)}.level-card.selected{border:2px solid var(--blue);padding:19px}.level-card.complete{background:#f5fbf8;border-color:#b9d9c8}.level-card-top{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px;gap:6px}.level-card-top>span:first-child{font:600 16px ui-monospace,monospace}.level-card.complete .level-card-top{color:var(--green)}.level-card h3{font-size:18px;font-weight:600;line-height:1.4;margin:20px 0 12px;min-height:50px}.formula{font:400 16px ui-monospace,monospace;color:var(--muted);margin:0}.level-card-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:24px}.level-card-bottom>span{display:flex;gap:4px}.level-card-bottom i{display:inline-flex;width:24px;height:20px;justify-content:center;align-items:center;border-radius:4px;background:#edf0f5;font-style:normal;color:#8590a5;font-size:12px}.level-card-bottom i.filled{color:#fff;background:var(--green)}.level-card-bottom b{font-weight:400;font-size:24px;color:var(--blue)}.result{max-width:850px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;text-align:center}.result-icon{margin:30px auto 15px;width:64px;height:64px;border-radius:50%;background:#e2f4ec;color:var(--green);font-size:34px;display:grid;place-items:center}.result-icon.neutral{background:#eaf0ff;color:var(--blue)}.result h1{font:800 clamp(28px,3.6vw,42px)/1.2 Manrope,Arial,sans-serif;margin:12px 0;letter-spacing:-1px}.result .subtitle{max-width:600px;margin:0 auto 24px}.result-stats{display:grid;grid-template-columns:repeat(4,1fr);background:#f5f7fb;border-radius:12px;padding:23px 10px;gap:12px;margin-top:28px}.result-stats strong{font:600 clamp(20px,2.5vw,30px) ui-monospace,monospace;letter-spacing:-1px;white-space:nowrap}.result-stats strong span{font-size:16px;color:var(--muted)}.result-stats p{font-size:12px;line-height:1.5;color:var(--muted);margin:10px 0 0}.result-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:28px}.result-actions button{font-size:14px}.mistakes{margin-top:30px;text-align:left;border-top:1px solid var(--line);padding-top:20px}.mistakes summary{cursor:pointer;font-size:16px;font-weight:600}.mistake-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px;max-height:400px;overflow:auto}.mistake-list>div{display:flex;flex-direction:column;gap:7px;background:#fdf3f5;border-radius:8px;padding:12px;font-size:14px}.mistake-list strong{font-family:ui-monospace,monospace;font-size:16px}.mistake-list span{color:var(--red)}.clean-note{font-size:14px;color:var(--green);margin:28px 0 10px}.result .tip{text-align:left}.backup-actions{display:flex;flex-direction:column;gap:8px;flex-shrink:0;font-size:14px}.file-label{cursor:pointer}.file-label:focus-within{outline:2px solid var(--blue)}.overview-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:30px 0}.overview-stats>div{border:1px solid var(--line);border-radius:12px;background:white;padding:23px}.overview-stats strong{display:block;font:700 34px Manrope,Arial,sans-serif;margin-bottom:7px}.overview-stats span{color:var(--muted);font-size:14px}.history-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#fff}.history-table{width:100%;border-collapse:collapse;font-size:14px;text-align:left}.history-table th{font-size:12px;color:var(--muted);font-weight:500;background:#f9faff;padding:17px 18px}.history-table td{padding:16px 18px;border-top:1px solid var(--line);line-height:1.4}.history-table td:first-child{white-space:nowrap}.history-table small{display:block;font-size:12px;color:var(--muted);margin-top:4px}.history-table td b{color:var(--blue);margin-right:5px}.mono{font-family:ui-monospace,monospace;white-space:nowrap}.text-green{color:var(--green)}.empty-state{text-align:center;padding:55px 20px;background:#fff;border:1px solid var(--line);border-radius:16px}.empty-equation{font:600 48px Manrope,Arial,sans-serif;letter-spacing:-1px}.empty-equation span{color:var(--blue)}.empty-state h2{font-size:22px;margin:25px 0 12px}.empty-state p{color:var(--muted);line-height:1.6;margin-bottom:26px}.program-page{max-width:850px;margin:0 auto}.program-page>p{font-size:16px;line-height:1.8;color:var(--muted)}.program-page>h2{margin-top:35px}.program-steps{margin-top:35px}.program-steps article{display:flex;gap:22px;padding:24px 0;border-top:1px solid var(--line)}.program-steps article>b{color:var(--blue);font:600 22px ui-monospace,monospace;padding-top:4px}.program-steps h2{margin:0 0 10px;font-size:22px}.program-steps p{color:var(--muted);font-size:16px;line-height:1.7;margin:0}.program-page .program-note{margin-top:25px}.program-page .result-actions{justify-content:flex-start}#import-status{line-height:1.6;color:var(--blue)}
+@media(max-width:1000px){.math-sheet{gap:10px}.math-column{padding:16px 9px}.math-row{grid-template-columns:17px minmax(0,1fr) 63px;gap:4px;font-size:14px}.program-note{flex-wrap:wrap;gap:12px}.level-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.result-stats{grid-template-columns:repeat(2,1fr);row-gap:26px}}
+@media(max-width:700px){.math-sheet{grid-template-columns:1fr;max-width:460px;margin:0 auto}.math-row{grid-template-columns:22px minmax(0,1fr) 95px;font-size:18px;padding:7px 0}.math-column{padding:20px}.session-heading{align-items:flex-start}.session-heading h1{font-size:23px}.timer-block strong{font-size:26px}.session-heading .eyebrow{font-size:11px;letter-spacing:.8px}.session-progress{gap:12px}.flashcard{padding:22px 16px;min-height:360px}.answer-submit span{display:none}.answer-submit{padding:10px 17px}.session-bottom{align-items:flex-start;line-height:1.6}.session-bottom>span{max-width:65%}.page-heading{align-items:flex-start;flex-wrap:wrap;gap:5px}.roadmap-total{font-size:48px}.page-heading h1{font-size:30px}.program-note{padding:18px}.level-card{padding:16px}.level-card.selected{padding:15px}.level-card h3{font-size:16px;min-height:65px}.level-card-top{align-items:flex-start}.formula{font-size:14px}.level-grid{gap:10px}.road-block-title h2{font-size:22px}.result{padding:22px 16px}.result-actions{flex-direction:column}.result-stats{padding:20px 10px}.mistake-list{grid-template-columns:1fr}.backup-actions{flex-direction:row;flex-wrap:wrap}.overview-stats{grid-template-columns:1fr 1fr;gap:10px}.overview-stats>div{padding:18px}.overview-stats strong{font-size:30px}.history-table th,.history-table td{padding:14px 12px}.history-table{min-width:670px}.under-start{flex-direction:column;gap:5px}.program-steps{margin-top:25px}.program-steps article{gap:16px}.program-page h1{font-size:30px}.program-steps h2{font-size:20px}.program-page .result-actions{align-items:stretch}}
+@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
+@media print{.topbar,.session-heading,.session-progress,.session-bottom,.sheet-submit,.local-note{display:none}.math-sheet{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.math-sheet.single{display:block}.math-column{border:0;padding:0}.math-row{font-size:10pt;padding:1px 0;grid-template-columns:15px 1fr 50px}.math-row input{font-size:10pt;min-height:16px;padding:1px;background:white}.ten-divider{margin-top:3px;padding-top:3px}.column-heading{padding-bottom:8px}body{background:white}main{padding:0}}
+
/* Detailed analytics and phone-first input */
.analytics-filters{display:flex;flex-wrap:wrap;gap:16px;align-items:center;background:white;padding:18px 20px;border:1px solid var(--line);border-radius:12px}.analytics-filters>strong{font-size:14px;margin-right:auto}.analytics-filters label{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--muted)}.analytics-filters select{max-width:100%;padding:10px;border:1px solid var(--line);border-radius:7px;background:white;font-size:16px;color:var(--ink)}.filter-note{font-size:13px;line-height:1.6;color:var(--muted);margin:14px 0 22px}.attempt-legend{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--muted);margin:20px 0}.attempt-legend>span{display:flex;gap:7px;align-items:center}.attempt-legend i{width:10px;height:14px;border-radius:3px}.perfect{background:#187757;color:white}.good{background:#eabb3d;color:#493800}.weak{background:#ca4b60;color:white}.incomplete{background:#98a2b6;color:white}.analytics-level{cursor:default}.analytics-level:hover{transform:none}.level-open{display:block;border:0;background:none;color:inherit;width:100%;padding:0;text-align:left;cursor:pointer}.level-open:hover h3{color:var(--blue)}.mini-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin:22px 0 10px;padding-top:15px;border-top:1px solid var(--line)}.mini-metrics small{font-size:12px;color:var(--muted)}.mini-metrics strong{display:block;margin-top:6px;font-size:14px;font-weight:600;white-space:nowrap}.sample-count{font-size:12px;color:var(--muted)}.attempt-strip{display:flex;align-items:center;gap:3px;min-height:40px;margin-top:16px;flex-wrap:wrap}.attempt-stick{width:8px;min-height:28px;border:0;border-radius:3px;padding:0;position:relative}.attempt-stick:focus-visible,.attempt-stick:hover{outline:2px solid var(--blue);outline-offset:2px}.attempt-stick:before{content:'';position:absolute;inset:-5px -2px}.review-stick{background-image:repeating-linear-gradient(135deg,transparent,transparent 4px,#ffffff70 4px,#ffffff70 6px)}.more-attempts{font-size:12px;padding-left:4px;color:var(--muted)}.labelled-columns i{width:34px}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:24px 0}.metric-grid>div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:23px 18px}.metric-grid small{display:block;color:var(--muted);font-size:13px;line-height:1.5}.metric-grid strong{display:block;font-size:24px;margin-top:10px;font-variant-numeric:tabular-nums}.column-progress-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:25px 0}.column-progress-cards>div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px}.column-progress-cards b{display:block;font-size:16px}.column-progress-cards span{display:block;font-size:13px;color:var(--muted);margin-top:8px}.column-progress-cards .passed{background:#e8f5ee;border-color:#b8d9c7;color:var(--green)}.time-chart{display:flex;align-items:flex-end;gap:12px;overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 18px;margin:20px 0;min-height:185px}.chart-column{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;min-width:78px;gap:10px;border:0;background:none;flex-shrink:0;color:var(--muted)}.chart-column small{font-size:12px}.chart-value{font-size:12px;white-space:nowrap}.chart-bar{display:block;min-height:5px;width:32px;border-radius:5px 5px 0 0}.patterns-panel{margin:35px 0;padding:25px;border:1px solid #d7dff7;border-radius:15px;background:#edf2ff}.patterns-panel h2{font-size:24px;letter-spacing:-.5px;margin:0}.patterns-panel>.muted{font-size:14px;line-height:1.6}.pattern-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:20px}.pattern-grid article{background:white;border:1px solid var(--line);border-radius:10px;padding:20px}.pattern-grid h3{font-size:18px;line-height:1.5;margin:12px 0}.pattern-grid p{font-size:14px;color:var(--muted);margin:9px 0;line-height:1.5}.pattern-grid small{font-size:12px;color:var(--muted);line-height:1.6;display:block}.pattern-examples{font-family:ui-monospace,monospace;font-size:14px;margin-top:14px;color:var(--blue);line-height:1.5}.accuracy-badge{display:inline-block;padding:5px 8px;border-radius:6px;font-size:13px;white-space:nowrap}.nowrap{white-space:nowrap}.text-red{color:var(--red)}.attempt-detail{max-width:1100px;margin:35px auto 0;text-align:left}.attempt-detail h2{font-size:24px}.attempt-detail>.primary{margin-top:15px}.example-table{min-width:600px}.muted{color:var(--muted);font-size:14px}.number-pad{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;width:100%;max-width:400px;margin-top:12px}.number-pad button{height:48px;border:1px solid #d3dcea;background:#f1f4fa;border-radius:9px;font-size:24px;font-weight:600;color:var(--ink);touch-action:manipulation;-webkit-user-select:none;user-select:none}.number-pad button:active{background:#dfe7ff}.number-pad .pad-enter{grid-column:1/-1;background:var(--blue);color:white;font-size:18px;height:48px}.sheet-sign{display:none}.connection-link{width:100%;min-height:100px;padding:15px;font-size:16px;border:1px solid var(--line);border-radius:8px;word-break:break-all;margin:18px 0}.program-page form{display:flex;flex-direction:column;gap:16px;max-width:550px;margin-top:25px}.program-page form input{font-size:16px;border:1px solid var(--line);border-radius:8px;padding:14px}.analytics-level .level-card-bottom{margin-top:10px}
@media(max-width:1050px){.mini-metrics strong{font-size:13px}.metric-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){html{scroll-padding-bottom:100px}body{padding-bottom:env(safe-area-inset-bottom)}.topbar{padding-top:max(12px,env(safe-area-inset-top));padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}.topbar .brand{font-size:25px}.topbar .brand-symbol{width:34px;height:34px;line-height:31px;font-size:30px}.nav-link{min-height:44px}.level-grid{grid-template-columns:1fr}.analytics-level .level-card-top{font-size:13px}.analytics-level h3{min-height:0;font-size:21px;margin:15px 0 10px}.mini-metrics strong{font-size:17px}.mini-metrics small{font-size:13px}.attempt-stick{min-height:32px;width:10px}.attempt-strip{gap:5px}.analytics-filters{gap:12px;padding:15px}.analytics-filters>strong{width:100%}.analytics-filters label{flex:1;min-width:90px;display:flex;flex-direction:column;align-items:stretch;gap:6px}.analytics-filters select{width:100%;padding:10px 6px;font-size:16px}.metric-grid{gap:10px}.metric-grid>div{padding:17px 13px}.metric-grid strong{font-size:22px}.column-progress-cards{gap:7px}.column-progress-cards>div{padding:13px 10px}.column-progress-cards b{font-size:14px}.column-progress-cards span{font-size:12px}.pattern-grid{grid-template-columns:1fr}.patterns-panel{padding:18px}.patterns-panel .section-top{flex-wrap:wrap}.patterns-panel .section-top>.primary{width:100%}.patterns-panel h2{font-size:22px}.attempt-detail .section-top{flex-wrap:wrap}.history-table{min-width:760px}.example-table{min-width:600px}.session-heading h1{font-size:19px;margin-top:7px}.session-heading{gap:10px}.timer-block strong{font-size:25px}.session-progress{margin:16px 0}.session-bottom{margin-top:10px}.card-session .local-note{font-size:11px}.answer-line{gap:6px}.answer-submit{min-width:50px;padding:10px 14px}.flashcard .big-equation{font-size:clamp(38px,11vw,58px);margin:0 0 14px}.flashcard{padding:17px 14px;min-height:0}.card-marker{margin-bottom:12px;font-size:11px}.flashcard #answer{font-size:28px;padding:9px 10px;height:54px}.sign-button,.answer-submit{height:54px}.feedback{font-size:14px;min-height:22px;margin-top:12px}.sheet-sign{display:block;min-width:32px;height:40px;padding:0;border:1px solid var(--line);border-radius:5px;background:white;font-size:20px}.math-row{grid-template-columns:18px minmax(0,1fr) 70px 32px;gap:5px;font-size:17px}.math-column{padding:16px 10px}.session-bottom>.text-button{min-height:44px}.training .setup{margin:18px 0}.training .exercise-preview{min-height:160px}.page-heading h1{font-size:28px}.topbar{gap:8px;min-height:74px}main{padding-top:18px}.result-stats strong{font-size:22px}.result h1{font-size:28px}.primary,.secondary{touch-action:manipulation}}
@media(pointer:coarse){button{touch-action:manipulation}.answer-line .sign-button{display:none}.flashcard #answer{cursor:default}.answer-line>.answer-submit{display:none}.flashcard{box-shadow:none}.card-session .session-bottom>span{font-size:0}.card-session .session-bottom>span:after{content:'Введи число и нажми «Ответить»';font-size:12px}}
@media(max-height:760px) and (pointer:coarse){.card-session .session-heading h1{font-size:17px}.card-session .session-heading .eyebrow{font-size:10px}.card-session .flashcard{padding:12px}.card-session .big-equation{font-size:42px;margin-bottom:8px}.number-pad{gap:5px;margin-top:8px}.number-pad button{height:40px;font-size:22px}.number-pad .pad-enter{height:42px;font-size:17px}.card-session .session-progress{margin:12px 0}.card-session .session-bottom{margin-top:4px}.topbar .brand{font-size:22px}.topbar{padding-top:10px;padding-bottom:8px}.nav-link{padding:6px 10px;min-height:36px}.session .local-note{margin-top:8px}}

/* Immediate sheet feedback: reserve the answer column to prevent layout jumps. */
.math-row{grid-template-columns:18px minmax(0,1fr) 64px 66px;gap:6px;border-radius:6px}.math-sheet.single{max-width:500px}.sheet-feedback{font-size:14px;white-space:nowrap;font-weight:600;text-align:right;padding-right:3px}.sheet-correct{background:#edf8f1}.sheet-incorrect{background:#fff0f1}.sheet-correct input{color:var(--green);border-color:#95c7aa;background:#f5fff8}.sheet-incorrect input{color:var(--red);border-color:#e1a0a6;background:#fff8f8}.sheet-correct .sheet-feedback{color:var(--green)}.sheet-incorrect .sheet-feedback{color:var(--red)}.math-row input[readonly]{cursor:default}.sheet-sign:disabled{opacity:.35;cursor:default}
@media(max-width:650px){.math-row{grid-template-columns:16px minmax(0,1fr) 52px 28px 55px;gap:4px;font-size:14px}.sheet-sign{min-width:28px;width:28px}.sheet-feedback{font-size:12px}.math-row input{font-size:16px}.math-column{padding:16px 8px}}

/* Persistence and accounting: one visible status, separate totals and comparable time. */
.storage-status{max-width:1440px;margin:12px auto 0;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;background:#fff5d9;border:1px solid #e7ca7b;border-radius:10px;font-size:14px;color:#674d10}
.storage-status[data-state="synced"]{background:#eaf6ef;border-color:#add3be;color:#156542}
.storage-status[data-state="syncing"]{background:#edf1ff;border-color:#b9c9fb;color:#2745a5}
.storage-status[data-state="offline"],.storage-status[data-state="auth"]{background:#fff0e9;border-color:#e9b49a;color:#873d21}
.storage-status .text-button{white-space:nowrap;flex-shrink:0}.storage-error{color:#9e3023;padding:12px 24px}
.level-total{font-size:14px;line-height:1.7;margin:12px 0}.comparison-label{font-size:12px;color:#5e6c88;background:#eaf0f9;padding:8px;border-radius:6px;margin-bottom:0}.all-attempts-label{display:block;margin-top:18px;color:#60718e}.sample-count{line-height:1.6}.mini-metrics small{font-size:11px}.repeated-facts{padding:18px 20px;border:1px solid #cbd6ef;border-radius:12px;background:#f5f7fe;margin:16px 0}.repeated-facts p{margin:8px 0}.uncertain-answers{margin-top:22px;border:1px solid #e4cf92;border-radius:10px;padding:16px;background:#fffbef}.uncertain-answers summary{cursor:pointer;font-weight:650}.uncertain-answers p{font-size:14px;line-height:1.6}.column-progress-cards small{display:block;color:#61718c}.overview-stats strong{font-variant-numeric:tabular-nums}.column-progress-cards{margin-bottom:24px}
@media(max-width:640px){.storage-status{margin:8px 12px 0;padding:10px 12px;font-size:12px;gap:8px}.storage-status .text-button{font-size:12px;white-space:normal;max-width:105px}.overview-stats strong{font-size:24px}.mini-metrics strong{font-size:14px}.uncertain-answers{padding:12px}.level-total{margin-top:4px}}