:root{font-family:Inter,"Segoe UI",Arial,sans-serif;color:#18243a;background:#f4f6fa;font-size:16px;--blue:#365bea;--muted:#728096;--line:#e3e8f0;--navy:#172337}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a,input,textarea{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #8099ff;outline-offset:4px}[hidden]{display:none!important}.shell{display:flex;min-height:100vh}.sidebar{width:240px;flex-shrink:0;background:var(--navy);color:#cbd3e0;padding:40px 24px;display:flex;flex-direction:column;min-height:100vh}.brand{display:flex;align-items:center;gap:12px;color:white;text-decoration:none;font-size:25px;font-weight:700;letter-spacing:-1px}.brand-mark{width:44px;height:44px;display:grid;place-items:center;background:#4165f2;border-radius:13px;font-size:34px;letter-spacing:-4px;padding-right:4px}.brand-sub{display:block;font-size:10px;letter-spacing:1.7px;color:#9aa7bc;margin-top:5px}.side-label{font-size:12px;letter-spacing:1.5px;color:#8895ac;margin:60px 12px 18px}.nav-item{border:0;background:transparent;color:#aeb9cc;text-align:left;width:100%;padding:15px 16px;border-radius:9px;margin-bottom:8px;font-size:15px;display:flex;align-items:center;gap:12px}.nav-item span{font-size:22px;line-height:1}.nav-item.active{background:#2b3951;color:white}.side-bottom{margin-top:auto;padding:60px 6px 0;font-size:12px;color:#aeb9cc}.status-dot{display:inline-block;background:#7ab8a9;width:6px;height:6px;border-radius:50%;margin-right:6px}.side-bottom .text-button{display:block;margin-top:14px;color:#aeb9cc;font-size:14px}main{flex:1;min-width:0;padding:0 52px 30px;max-width:1600px}.topbar{height:96px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;color:var(--muted)}.topbar b{font-weight:500;color:#35435c}.divider{margin:0 14px;color:#b5c0cf}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:42px 0 28px}.eyebrow{display:block;letter-spacing:1.7px;font-size:12px;font-weight:650;color:var(--muted)}h1,h2,p{margin-top:0}h1{font-size:clamp(30px,3.3vw,46px);line-height:1.16;font-weight:650;letter-spacing:-1.7px;margin:12px 0 0}.title-dot{color:var(--blue)}.small-note{font-size:14px;color:var(--muted);line-height:1.6}.overview{display:grid;grid-template-columns:2.3fr 1fr 1fr;gap:16px}.today-box{background:#e9eeff;border:1px solid #d7e0ff;border-radius:16px;padding:28px;display:flex;align-items:flex-start;justify-content:space-between;flex-direction:column;gap:16px}.today-box .eyebrow{color:#5270c0}.today-box h2{font-size:25px;letter-spacing:-.6px;margin:10px 0}.today-box p{margin:0;line-height:1.5;color:#596b94;font-size:14px}.primary{border:0;border-radius:9px;background:var(--blue);color:white;padding:15px 20px;display:inline-flex;gap:24px;justify-content:space-between;align-items:center;font-size:14px;font-weight:600;min-height:46px}.primary:hover{background:#284cdc}.primary span{font-size:20px;font-weight:400}.count-box{background:white;border:1px solid var(--line);border-radius:16px;padding:28px;display:flex;flex-direction:column;justify-content:space-between;gap:14px}.count-box strong{font-size:58px;letter-spacing:-3px;font-weight:500;line-height:1.1}.count-box>span:last-child{color:var(--muted);font-size:14px}.collection-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:40px}.collection-heading h2{font-size:23px;margin:0;letter-spacing:-.5px}.search{display:flex;align-items:center;gap:10px;border:1px solid var(--line);background:white;border-radius:9px;padding:10px 14px;color:var(--muted)}.search>span{font-size:25px;line-height:1}.search input{background:transparent;outline:none;border:0;min-width:0;width:210px;color:var(--navy);font-size:14px}.filters{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:22px 0}.topic-filters{display:flex;gap:8px;flex-wrap:wrap}.topic-filters button{background:transparent;border:1px solid var(--line);padding:9px 14px;border-radius:7px;font-size:14px;color:#58667e}.topic-filters button.selected{background:#25334b;color:white;border-color:#25334b}.due-only{display:flex;gap:7px;align-items:center;font-size:14px;color:#58667e;white-space:nowrap}.due-only input{accent-color:var(--blue);width:16px;height:16px}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.flash-card{background:white;border:1px solid var(--line);border-radius:13px;padding:23px;display:flex;flex-direction:column;align-items:stretch;gap:20px;text-align:left;min-height:210px;color:var(--navy);transition:border-color .15s,transform .15s}.flash-card:hover{border-color:#a5b6f7;transform:translateY(-3px)}.card-head{display:flex;justify-content:space-between;gap:8px;align-items:center}.topic-tag{font-size:12px;font-weight:550;display:inline-block;line-height:1.4;background:#edf1fb;color:#53699c;border-radius:5px;padding:5px 9px;overflow-wrap:anywhere}.card-id{font-size:12px;color:#a0abba;flex-shrink:0}.flash-card h3{font-size:17px;line-height:1.5;font-weight:600;margin:0;overflow-wrap:anywhere}.card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;font-size:12px;color:var(--muted);padding-top:15px;border-top:1px solid #edf0f5}.ready{color:#4965cc}.ready::before{content:"";width:5px;height:5px;background:#6782e6;display:inline-block;border-radius:50%;margin-right:6px}.card-foot>span:last-child{font-size:19px}footer{display:flex;justify-content:space-between;gap:16px;color:#8994a7;font-size:12px;line-height:1.5;margin-top:28px}.text-button{border:0;padding:8px 0;background:none;color:#52617c;font-size:14px}.login{max-width:500px;margin:90px auto}.login h1{margin-bottom:20px}.login p{color:var(--muted);line-height:1.6}.login form{display:flex;flex-direction:column;gap:14px;margin-top:32px}.login label{font-size:14px}.login input{border:1px solid #cdd6e4;border-radius:8px;padding:14px}.login .error{color:#a43848}.loading{padding:80px 0;color:var(--muted)}.empty{padding:55px 25px;border:1px dashed #cdd6e4;border-radius:14px;text-align:center}.empty h2{font-size:22px}.empty p{color:var(--muted);line-height:1.6;margin:0}.training-top{display:flex;justify-content:space-between;align-items:center;margin:28px auto 12px;max-width:800px;font-size:14px;color:var(--muted)}progress{display:block;width:100%;max-width:800px;height:5px;border:0;border-radius:10px;overflow:hidden;margin:0 auto 28px;background:#e2e7f1;accent-color:var(--blue)}progress::-webkit-progress-bar{background:#e2e7f1}progress::-webkit-progress-value{background:var(--blue)}.study-card{max-width:800px;margin:auto;border:1px solid var(--line);border-radius:20px;background:white;padding:38px 44px;box-shadow:0 12px 45px #1b335008}.study-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}.study-prompt{margin-top:36px}.study-card h1{font-size:clamp(24px,2.6vw,34px);letter-spacing:-.8px;line-height:1.4;margin:16px 0 28px;overflow-wrap:anywhere}.study-card textarea{display:block;width:100%;resize:vertical;min-height:110px;border:1px solid var(--line);background:#f8f9fc;padding:16px;border-radius:10px;margin-bottom:20px;line-height:1.6;font-size:16px;color:var(--navy)}#answer-panel{border-top:1px solid var(--line);padding-top:28px;margin-top:28px}#answer{line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere;margin:16px 0 26px}.rate-label{font-size:14px;color:var(--muted);margin-bottom:12px}.ratings{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.ratings button{border:1px solid #dce3ef;border-radius:9px;padding:14px 8px;background:#f5f7fc;color:#273b64;font-size:14px}.ratings button:hover{border-color:var(--blue);background:#edf1ff}.ratings button:first-child{color:#ad4855;background:#fff7f7}.ratings small{display:block;color:var(--muted);font-size:12px;margin-top:6px}.training-note{text-align:center;font-size:13px;color:var(--muted);margin:24px auto;line-height:1.6;max-width:600px}.complete{text-align:center;padding:55px 20px;max-width:700px;margin:auto}.complete-mark{display:grid;place-items:center;width:76px;height:76px;background:#e6eeff;border-radius:50%;color:var(--blue);font-size:34px;margin:0 auto 30px}.complete p{color:var(--muted);margin:22px 0 30px;line-height:1.6}.notice{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--navy);color:white;border-radius:10px;padding:15px 22px;box-shadow:0 6px 30px #18243a22;font-size:14px;max-width:90vw;z-index:10}
.demo-banner{font-size:13px;color:#53699c;background:#e9eeff;border:1px solid #d7e0ff;padding:12px 16px;border-radius:8px;margin:22px 0 -12px;line-height:1.6}
.header-actions{display:flex;align-items:center;gap:18px}.header-actions .text-button{font-size:13px}.primary{text-decoration:none}.empty .primary{margin-top:24px}.login>.primary{margin:8px 0 12px}.login>.text-button{display:block}.error{color:#a43848;line-height:1.6}.login .error{margin-top:18px}.telegram-app{padding-top:var(--tg-content-safe-area-inset-top,0px);padding-bottom:max(env(safe-area-inset-bottom,0px),var(--tg-content-safe-area-inset-bottom,0px));min-height:var(--tg-viewport-stable-height,100vh)}.telegram-app .shell{min-height:var(--tg-viewport-stable-height,100vh)}
html[data-theme=dark]{color-scheme:dark;background:#101722;color:#e5eaf2;--navy:#e5eaf2;--muted:#a1aec2;--line:#354154;--blue:#7d96ff}html[data-theme=dark] .sidebar{background:#131e30}html[data-theme=dark] .topbar b,html[data-theme=dark] .text-button,html[data-theme=dark] .topic-filters button,html[data-theme=dark] .due-only{color:#c0cbe0}html[data-theme=dark] .count-box,html[data-theme=dark] .flash-card,html[data-theme=dark] .study-card,html[data-theme=dark] .search,html[data-theme=dark] .login input{background:#1b2738;color:#e5eaf2}html[data-theme=dark] .today-box,html[data-theme=dark] .demo-banner{background:#223251;border-color:#384e7c}html[data-theme=dark] .today-box p,html[data-theme=dark] .today-box .eyebrow,html[data-theme=dark] .demo-banner{color:#b0c0e9}html[data-theme=dark] .primary{background:#5476f2;color:#fff}html[data-theme=dark] .primary:hover{background:#6383fc}html[data-theme=dark] .topic-tag{background:#2d3d59;color:#bdcdf7}html[data-theme=dark] .topic-filters button.selected{background:#d4dff7;color:#18243a;border-color:#d4dff7}html[data-theme=dark] .card-foot{border-color:#354154}html[data-theme=dark] .ready{color:#a6b8ff}html[data-theme=dark] .study-card textarea{background:#111c2c;color:#e5eaf2}html[data-theme=dark] .ratings button{background:#23324c;color:#d1dcf5;border-color:#415477}html[data-theme=dark] .ratings button:first-child{background:#3d2835;color:#ffa4b1}html[data-theme=dark] .ratings button:hover{border-color:#9caeff}html[data-theme=dark] .complete-mark{background:#283c65;color:#b6c7ff}html[data-theme=dark] .notice{background:#e1e9fa;color:#18243a}html[data-theme=dark] .error{color:#ffb0bb}html[data-theme=dark] progress,html[data-theme=dark] progress::-webkit-progress-bar{background:#354154}
@media(min-width:1450px){.today-box{flex-direction:row;align-items:center;gap:24px}.count-box strong{font-size:64px}}
@media(max-width:1200px){.sidebar{width:205px;padding:32px 18px}main{padding:0 30px 24px}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.overview{grid-template-columns:1.6fr 1fr}.topic-count{display:none}.filters{align-items:flex-start;flex-direction:column}.count-box{padding:24px}}
@media(max-width:760px){.shell{display:block}.sidebar{width:100%;min-height:0;padding:16px 20px;flex-direction:row;align-items:center;justify-content:space-between;gap:16px}.brand{font-size:22px}.brand-sub,.side-label,.side-bottom,.nav-item span{display:none}.brand-mark{width:36px;height:36px;font-size:28px}.sidebar nav{display:flex;gap:6px}.nav-item{width:auto;font-size:13px;padding:10px;margin:0;white-space:nowrap}main{padding:0 20px 24px}.topbar{height:66px;font-size:12px}.topbar #date{font-size:12px}.divider{margin:0 7px}.page-heading{margin:30px 0 23px}.small-note{display:none}.eyebrow{font-size:11px;letter-spacing:1.2px}.overview{gap:10px;grid-template-columns:1.65fr 1fr}.today-box,.count-box{padding:20px;border-radius:12px}.today-box h2{font-size:23px}.count-box strong{font-size:46px}.count-box>span:last-child{font-size:12px}.primary{font-size:14px;padding:13px 15px;gap:12px}.collection-heading{margin-top:30px}.search{max-width:54%;padding:9px 10px}.search input{width:100%;font-size:14px}.collection-heading h2{font-size:21px}.card-grid{gap:12px}.flash-card{padding:17px;min-height:225px}.flash-card h3{font-size:16px}.card-head{align-items:flex-start}.card-id{display:none}.topic-tag{font-size:12px}.card-foot{font-size:12px;gap:8px}footer>span:last-child{display:none}.study-card{padding:25px 22px;border-radius:14px}.study-prompt{margin-top:28px}.ratings{grid-template-columns:repeat(2,1fr)}.training-note{font-size:12px}.login{margin:50px auto}.complete{padding:30px 0}}
@media(max-width:430px){.card-grid{grid-template-columns:1fr}.flash-card{min-height:180px}.count-box{padding:18px 14px}.topbar #date{display:none}.sidebar{padding:14px}.brand{gap:8px}.nav-item{font-size:12px;padding:9px 8px}main{padding:0 16px 22px}.today-box{padding:18px}.today-box .primary{font-size:13px}.today-box .primary span{display:none}}
@media(max-width:760px){.header-actions{gap:12px}.header-actions #date{display:none}.header-actions .text-button{font-size:12px}.telegram-app main{padding-left:max(16px,var(--tg-content-safe-area-inset-left,0px));padding-right:max(16px,var(--tg-content-safe-area-inset-right,0px))}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}