@font-face{font-family:Focus;src:local("Inter"),local("Arial");font-display:swap}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Focus,-apple-system,BlinkMacSystemFont,Segoe UI,Arial,sans-serif;color:#142749;background:#f4f8fd;font-size:15px;line-height:1.5}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button{border:0}a{color:inherit;text-decoration:none}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #92c5ff;outline-offset:3px}h1,h2,h3,p{margin:0}h1,h2,h3{color:#101f43}h1{letter-spacing:-1.1px;font-size:34px;line-height:1.2;font-weight:750}h2{font-size:19px;letter-spacing:-.3px;line-height:1.4}h3{font-size:16px}p{color:#687b99}input:not([type=checkbox]):not([type=radio]),select,textarea{border:1px solid #dce5f1;border-radius:10px;background:#fff;color:#172a4a;padding:12px 14px;max-width:100%}input::placeholder,textarea::placeholder{color:#92a0b4}textarea{resize:vertical;line-height:1.65}input[type=checkbox]{width:20px;height:20px;accent-color:#1676f5;flex-shrink:0;cursor:pointer}input[type=radio]{accent-color:#1676f5;width:20px;height:20px;flex-shrink:0}label{display:flex;flex-direction:column;gap:8px;font-weight:550;font-size:14px}small,.muted{color:#7c8eaa;font-size:12px}strong{font-weight:650}.btn,.btn-secondary{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 23px;border-radius:10px;line-height:1.25;font-weight:650;font-size:14px;transition:background .2s,transform .2s;white-space:nowrap}.btn{color:#fff;background:linear-gradient(120deg,#2586ff,#0870f6);box-shadow:0 4px 9px #1676f518}.btn:hover:not(:disabled){background:#0868e2;transform:translateY(-1px)}.btn-secondary{color:#1676f5;background:#f7fbff;border:1px solid #d7e8ff}.btn-secondary:hover:not(:disabled){background:#eaf4ff}.full-width{width:100%;min-height:56px;font-size:16px}.text-button{background:none;color:#1676f5;padding:6px 0;font-weight:550;font-size:13px}.icon-button{background:none;color:#6a7e9c;display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px}.icon-button:hover{background:#eaf2fb;color:#1676f5}.logo{display:flex;align-items:center;gap:10px;color:#102745;font-size:30px;font-weight:800;line-height:1;letter-spacing:-1px;white-space:nowrap}.logo-icon{width:44px;height:44px;flex-shrink:0;display:flex;align-items:center;justify-content:center}.logo-icon img{display:block;width:100%;height:100%;object-fit:contain}.logo-wordmark{font-weight:750;letter-spacing:-1.1px}.initial-mark{width:48px;height:48px}.logo-caption{display:block;font-size:8px;letter-spacing:1.15px;line-height:1.3;margin-top:7px;font-weight:700;color:#617795}.initial-load{height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;color:#1676f5}.skip-link{position:fixed;left:10px;top:-100px;z-index:100;background:#fff;padding:12px;color:#1676f5}.skip-link:focus{top:10px}.global-error{position:fixed;top:12px;left:50%;transform:translate(-50%);max-width:90%;z-index:200;background:#fff5f4;color:#ae3d35;border:1px solid #ffcbc6;padding:14px 18px;border-radius:12px;box-shadow:0 5px 30px #15244715;display:flex;gap:20px;align-items:center}.global-error button{background:none;color:inherit;display:flex}.panel{background:#fff;border:1px solid #e7edf5;border-radius:16px;box-shadow:0 4px 14px #143a6503}.icon-bubble{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;width:53px;height:53px;background:#e7f3ff;color:#1676f5;flex-shrink:0}.icon-bubble.green{background:#e5f8ee;color:#11b580}.icon-bubble.amber{background:#fff5de;color:#f5a218}.icon-bubble.orange{background:#fff0e6;color:#fa742c}.icon-bubble.coral{background:#ffedf0;color:#ea5968}.eyebrow{display:inline-flex;align-items:center;gap:8px;border-radius:30px;padding:9px 17px;font-size:13px;line-height:1.5;color:#2570c4;background:#e5f3ff;font-weight:550}.page-eyebrow{display:block;font-size:10px;font-weight:650;color:#8293ac;letter-spacing:1.6px;margin-bottom:9px}.rotate{transform:rotate(180deg)}.landing{background:linear-gradient(130deg,#fff 20%,#f4faff 70%,#e9f5ff);min-height:100vh}.landing-header{height:105px;display:flex;justify-content:space-between;align-items:center;max-width:1230px;padding:0 35px;margin:auto}.landing-header nav{display:flex;align-items:center;gap:38px;font-size:13px;color:#536984}.landing-header nav button{display:flex;align-items:center;gap:11px;color:#2169bd;border:1px solid #d6e7f8;border-radius:10px;background:#fff9;padding:12px 20px;font-size:13px}.hero{max-width:1240px;margin:auto;padding:65px 35px 48px;display:grid;grid-template-columns:1.05fr 1fr;align-items:center;min-height:640px}.hero-copy{position:relative;z-index:1}.hero h1{font-size:clamp(44px,4.3vw,65px);line-height:1.12;letter-spacing:-2.6px;margin:23px 0}.hero h1 span{color:#1676f5}.hero-subtitle{font-size:17px;line-height:1.8;color:#617693}.hero-actions{display:flex;gap:25px;align-items:center;margin-top:32px}.hero-actions .btn{min-height:54px;font-size:16px;padding:16px 27px}.hero-security{display:flex;align-items:center;gap:8px;font-size:11px;margin-top:18px;color:#8293aa}.hero-security svg{color:#459bda}.hero-social-proof{margin-top:50px;display:flex;gap:21px;flex-wrap:wrap;font-size:11px;color:#62758e}.hero-social-proof span{display:flex;align-items:center;gap:6px}.hero-social-proof svg{color:#22ba94}.hero-art{position:relative;height:490px;display:grid;place-items:center}.hero-art img{width:115%;max-height:550px;object-fit:contain;position:relative;z-index:1}.art-orbit{position:absolute;width:92%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at 45% 40%,#dff3ff,#edf8ff);right:-5%;top:0}.floating-card{position:absolute;z-index:2;background:#fffffff2;border:1px solid #e0edf8;border-radius:14px;box-shadow:0 8px 35px #446c8b12;display:flex;align-items:center;gap:12px;-webkit-backdrop-filter:none;backdrop-filter:none}.card-achievement{left:-22px;bottom:35px;padding:13px 17px}.card-achievement .icon-bubble{width:38px;height:38px}.floating-card strong{font-size:12px;color:#233857}.floating-card small{display:block;font-size:10px;margin-top:2px}.card-exam{right:0;top:32px;padding:14px 18px;transform:rotate(4deg);font-size:11px;color:#55789f}.card-exam svg{color:#f5a218}.landing-features{max-width:1170px;margin:8px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:35px;padding:32px 0;border-top:1px solid #dfebf6}.landing-features article{display:flex;align-items:center;gap:15px}.landing-features h3{font-size:14px;margin-bottom:5px}.landing-features p{font-size:12px}.landing-features .icon-bubble{border-radius:15px}.landing-about{padding:72px 25px;text-align:center;max-width:720px;margin:auto}.landing-about .eyebrow{font-size:10px;letter-spacing:1.2px;background:none;padding:0}.landing-about h2{font-size:30px;line-height:1.4;margin:18px 0}.landing-about p{line-height:1.8;margin-bottom:26px}.landing-footer{border-top:1px solid #e1eaf3;max-width:1170px;margin:auto;padding:26px 0;display:flex;align-items:center;justify-content:space-between}.landing-footer .logo{font-size:23px}.landing-footer .logo-icon{width:36px;height:36px}.landing-footer p,.landing-footer button{font-size:11px;color:#8696ac}.landing-footer button{background:none}.app-shell{display:flex;min-height:100vh}.sidebar{width:233px;position:fixed;top:0;bottom:0;left:0;background:linear-gradient(#fff 60%,#edf7ff);border-right:1px solid #e4ebf4;padding:29px 18px 19px;display:flex;flex-direction:column;z-index:40}.sidebar .logo{margin-left:10px}.sidebar .logo-icon{width:40px;height:40px}.sidebar .logo{font-size:28px}.course-label{font-size:10px;color:#7c90a8;display:flex;gap:7px;align-items:center;margin:30px 10px 19px}.dot{height:6px;width:6px;border-radius:50%;background:#16bd91}.sidebar nav{display:flex;flex-direction:column;gap:6px}.sidebar nav a{display:flex;align-items:center;gap:14px;min-height:47px;font-size:13px;color:#607592;border-radius:9px;padding:12px 16px;position:relative}.sidebar nav a:hover{background:#f0f6fd}.sidebar nav a.active{background:#e9f3ff;color:#1676f5;font-weight:650}.sidebar nav a.active:before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:#1676f5;border-radius:8px}.sidebar nav a.nav-separator{margin-top:18px}.sidebar nav a.nav-separator:after{content:"";position:absolute;top:-13px;left:16px;right:16px;height:1px;background:#e5edf6}.sidebar-note{background:linear-gradient(140deg,#e9f5ff,#dcedff);border-radius:14px;margin:auto 3px 10px;padding:20px 15px;position:relative;overflow:hidden;min-height:171px}.mini-cap{color:#2280e7;display:inline-flex;margin-bottom:9px}.sidebar-note h3{font-size:14px;line-height:1.5}.sidebar-note p{font-size:10px;line-height:1.6;margin-top:7px;max-width:127px}.book-stack{position:absolute;right:-12px;bottom:7px;width:79px;transform:rotate(-10deg)}.book-stack span{display:block;height:13px;border-radius:3px;border:3px solid #6dabe6;border-left:9px solid #498fd1;background:#ffffffb0;box-shadow:0 3px 3px #00477712}.book-stack span:nth-child(2){margin-left:5px;border-color:#76c4c6;border-left-color:#48a3a9}.book-stack span:nth-child(3){margin-left:-3px;border-color:#bed4f0;border-left-color:#7bace2}.logout{display:flex;align-items:center;gap:13px;color:#8090a5;font-size:12px;padding:16px 20px 2px;background:none;margin-top:13px}.sidebar-close{display:none}.workspace{margin-left:233px;flex:1;min-width:0}.topbar{height:85px;background:#fff;border-bottom:1px solid #e8eef5;display:flex;align-items:center;justify-content:space-between;padding:0 40px;position:relative}.topnav{display:flex;gap:30px;height:100%;align-items:center;font-size:13px;color:#69809f}.topnav a{height:100%;display:flex;align-items:center;position:relative}.topnav a.active{color:#1676f5;font-weight:650}.topnav a.active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:#1676f5;border-radius:3px}.header-tools{display:flex;align-items:center;gap:17px}.header-search{display:flex;align-items:center;position:relative;color:#8da0b8;gap:6px}.header-search input{border:0!important;background:transparent!important;padding:9px 5px!important;width:125px;font-size:12px}.search-results,.notification-panel{background:#fff;border:1px solid #dfebf7;border-radius:12px;box-shadow:0 10px 40px #213a5f1a;padding:14px;position:absolute;z-index:50;top:45px;right:0;width:300px}.search-results button,.notification-panel button{display:flex;align-items:center;justify-content:space-between;text-align:left;background:transparent;width:100%;padding:10px;color:#526c8b;font-size:13px;border-radius:7px}.search-results button:hover,.notification-panel button:hover{background:#eef6ff}.notification-panel{right:120px;top:75px}.notification-panel p{font-size:12px;margin:8px 0}.notification{position:relative}.notification i{width:6px;height:6px;background:#f4827f;border:1px solid white;border-radius:50%;position:absolute;top:7px;right:7px}.profile-button{display:flex;align-items:center;gap:10px;background:none;color:#445c7f;font-size:12px}.avatar{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:36px;height:36px;border-radius:50%;background:linear-gradient(140deg,#cdeeff,#d8e2fa);color:#2775ad;font-size:16px;font-weight:650;border:2px solid #fff;box-shadow:0 0 0 1px #e1edf8}.mobile-menu,.mobile-logo{display:none}.main-content{max-width:1270px;margin:auto;padding:38px 40px 35px;min-height:calc(100vh - 166px)}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:29px}.page-heading p{font-size:14px;margin-top:10px;line-height:1.65}.goal-note{font-size:11px;display:flex;align-items:center;gap:12px;background:#fff;border:1px solid #e1e9f4;border-radius:12px;padding:13px 19px;color:#627898;line-height:1.65}.goal-note svg{color:#e9b244}.heading-badge{display:flex;align-items:center;gap:11px;background:#eaf4ff;border:1px solid #ddefff;border-radius:12px;padding:16px 20px;font-size:12px;color:#53709b;max-width:340px}.heading-badge svg{color:#1676f5;flex-shrink:0}.guest-note{display:flex;align-items:center;gap:9px;color:#6d83a0;font-size:11px;margin:-9px 0 20px}.guest-note svg{color:#639ed6;flex-shrink:0}.guest-note a{color:#1676f5;text-decoration:underline}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:19px;margin-bottom:22px}.stat-card{background:#fff;border:1px solid #e7edf5;border-radius:15px;display:flex;align-items:center;gap:16px;padding:24px 22px}.stat-card>div>span{display:block;color:#617392;font-size:12px;margin-bottom:6px}.stat-card strong{display:block;font-size:31px;color:#102747;line-height:1.2;letter-spacing:-.8px}.stat-card small{display:block;font-size:10px;font-weight:400;letter-spacing:0;margin-top:7px;white-space:nowrap}.dashboard-middle{display:grid;grid-template-columns:1.65fr 1fr;gap:20px;margin-bottom:21px}.dashboard-middle .panel{padding:23px}.section-heading{display:flex;align-items:center;justify-content:space-between}.section-heading a{color:#7f92ae;display:flex;gap:2px;align-items:center;font-size:10px}.progress-inner{display:flex;gap:32px;align-items:center;justify-content:space-between;margin-top:22px}.ring{padding:12px;border-radius:50%;flex-shrink:0}.ring>div{border-radius:50%;background:#fff;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center}.ring strong{font-size:31px;letter-spacing:-1px}.ring span{font-size:10px;color:#7286a1;margin-top:2px}.score-chart{min-width:0;flex:1}.score-chart>p{font-size:10px;margin-bottom:15px}.chart-bars{height:126px;display:flex;justify-content:space-around;gap:10px;padding-bottom:21px;border-bottom:1px solid #dfe8f3;background:repeating-linear-gradient(to top,transparent,transparent 24px,#f1f5fa 25px);position:relative}.chart-bars>div{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;position:relative}.chart-bars span{width:21px;border-radius:6px 6px 0 0;background:linear-gradient(#69d4bda8,#39afd7);min-height:4px;position:relative}.chart-bars i{position:absolute;top:-17px;left:50%;transform:translate(-50%);font-size:9px;color:#647b99;font-style:normal}.chart-bars small{position:absolute;bottom:-21px;font-size:8px;white-space:nowrap}.chart-placeholder{display:flex;align-items:flex-end;justify-content:space-evenly;height:125px;position:relative;border-bottom:1px solid #eef2f6}.chart-placeholder>div{width:20px;height:20px;background:#f0f5fb;border-radius:5px 5px 0 0}.chart-placeholder>div:nth-child(2){height:35px}.chart-placeholder>div:nth-child(3){height:55px}.chart-placeholder>div:nth-child(4){height:65px}.chart-placeholder>div:nth-child(5){height:75px}.chart-placeholder p{position:absolute;top:20px;left:0;right:0;font-size:11px;text-align:center;color:#9aabc0;line-height:1.7}.streak-count{display:flex;align-items:center;gap:14px;margin:19px 0}.streak-count .icon-bubble{width:46px;height:46px}.streak-count strong{font-size:25px;display:block;line-height:1.2}.streak-count span:not(.icon-bubble){font-size:11px;color:#7d8da6}.week-dots{display:flex;justify-content:space-between;margin-bottom:18px}.week-dots>span{display:flex;flex-direction:column;align-items:center;gap:5px;color:#dde6f0}.week-dots small{font-size:9px}.week-dots .lucide-circle-check{color:#1681f9}.soft-note{background:#edf6ff;border-radius:10px;padding:12px 15px;font-size:12px;color:#6a82a1;line-height:1.7}.streak-panel .soft-note{font-size:11px;padding:9px 12px}.dashboard-actions{display:grid;grid-template-columns:1.3fr 1fr;gap:20px}.dashboard-actions .panel{padding:22px}.continue-panel>div{display:flex;align-items:center;gap:13px;margin-top:20px}.continue-panel strong{font-size:12px}.continue-panel p{font-size:10px;margin-top:4px}.continue-panel .btn{margin-left:auto;padding:12px 16px;font-size:12px}.next-panel{text-align:left}.next-panel>div{display:flex;align-items:center;gap:12px;margin-top:20px}.next-panel>div>span:nth-child(2){flex:1}.next-panel strong{font-size:12px;line-height:1.6;display:block}.next-panel small{display:block;font-size:10px;line-height:1.5;margin-top:4px}.next-panel>div>svg{color:#1676f5}.motivation-banner{margin-top:24px;border-radius:14px;display:flex;align-items:center;gap:20px;padding:23px 30px;background:linear-gradient(110deg,#dfefff,#edf8ff);position:relative;overflow:hidden}.motivation-banner>svg{color:#1687ff;flex-shrink:0}.motivation-banner h3{font-size:14px;margin-bottom:5px}.motivation-banner p{font-size:11px}.motivation-banner>span{font-size:19px;font-style:italic;color:#5a96d2;line-height:1.3;margin-left:auto;transform:rotate(-7deg);white-space:nowrap}.app-footer{border-top:1px solid #e6edf5;margin:0 40px;display:flex;align-items:center;justify-content:space-between;padding:24px 0;font-size:10px;color:#8a9bb3}.app-footer>div{display:flex;gap:24px}.app-footer button{background:none;color:inherit;font-size:10px;padding:0}.bottomnav{display:none}.loading-card{padding:65px;text-align:center;background:#fff;border:1px solid #e7edf5;border-radius:15px;color:#7b90aa}.input-search{display:flex;align-items:center;gap:10px;border:1px solid #dee8f3;border-radius:10px;background:#fff;padding:0 13px;color:#93a5bd}.input-search input{border:0!important;background:transparent!important;width:100%;font-size:12px;padding:10px 0!important}.topic-toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}.topic-toolbar .input-search{width:280px}.topics-panel{padding:0 25px}.topic-row{display:flex;align-items:center;gap:17px;min-height:88px;border-bottom:1px solid #e8eef6}.topic-row:last-child{border-bottom:0}.topic-icon{display:flex;align-items:center;justify-content:center;width:41px;height:41px;background:#eaf4ff;color:#4a91dc;flex-shrink:0;border-radius:11px}.topic-icon.purple{background:#f0ecff;color:#9480d5}.topic-icon.green{background:#e9f9f2;color:#45b995}.topic-icon.amber{background:#fff5e6;color:#dfa54c}.topic-icon.large{width:71px;height:71px;border-radius:20px}.topic-title{background:none;text-align:left;flex:1;min-width:0;padding:10px 0;color:#203350}.topic-title strong{font-size:14px;display:block}.topic-title small{font-size:11px;display:block;margin-top:3px}.topic-solved{font-size:12px;color:#253d62;min-width:49px;text-align:right}.topic-solved>span{color:#93a3ba}.progress-track{height:7px;background:#e8eef6;border-radius:20px;overflow:hidden;width:100%}.progress-track span{height:100%;display:block;border-radius:20px;background:linear-gradient(90deg,#24d5a3,#17b986)}.topic-row .progress-track{width:130px}.topic-percent{font-size:12px;color:#5f7899;min-width:38px;text-align:right}.topic-row>.icon-button{color:#1676f5;width:28px}.selection-footer{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:23px 0}.check-label{display:inline-flex;flex-direction:row;align-items:center;gap:10px;color:#607796;font-weight:400;font-size:12px;line-height:1.5}.selection-footer>div{display:flex;align-items:center;gap:30px;font-size:12px;color:#7187a3}.selection-footer label:not(.check-label){flex-direction:row;align-items:center;font-size:12px;font-weight:400}.selection-footer select{padding:7px 11px!important}.back-link{display:inline-flex;align-items:center;gap:8px;background:none;color:#6990b7;font-size:12px;padding:0;margin-bottom:22px}.theory-layout{display:grid;grid-template-columns:1fr 280px;gap:22px;align-items:start}.theory-sections{display:flex;flex-direction:column;gap:19px}.theory-block{padding:25px 28px;position:relative}.theory-number{font-size:11px;color:#92bce7;background:#eef6ff;border-radius:7px;display:inline-block;padding:4px 8px;margin-bottom:14px}.theory-block h2{font-size:20px;margin-bottom:15px}.theory-block p{line-height:1.9;font-size:14px}.theory-summary{padding:25px;position:sticky;top:20px}.theory-summary>svg{color:#1676f5;margin-bottom:14px}.theory-summary h2{margin-bottom:12px}.theory-summary p{font-size:12px;line-height:1.8}.theory-summary .progress-track{margin-top:25px}.theory-summary small{display:block;margin:8px 0 25px}.theory-summary .btn{width:100%}.tabs{display:flex;gap:6px;border-bottom:1px solid #e0e8f2;margin-bottom:24px;overflow:auto}.tabs button{background:none;color:#8a9db6;font-size:12px;white-space:nowrap;padding:12px 19px;position:relative}.tabs button.active{color:#1676f5;font-weight:650}.tabs button.active:after{content:"";position:absolute;height:3px;bottom:0;left:15px;right:15px;border-radius:5px;background:#1676f5}.variants-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:19px}.variant-card{padding:24px}.variant-card-top{display:flex;align-items:center;justify-content:space-between;gap:6px;margin-bottom:19px}.variant-card .icon-bubble{width:43px;height:43px;border-radius:11px}.status-chip{font-size:9px;display:inline-flex;align-items:center;gap:5px;background:#f0f5fb;color:#8b9db2;border-radius:6px;padding:5px 8px;white-space:nowrap}.status-chip.active{background:#e7f2ff;color:#2d89e9}.status-chip.completed{background:#e7f8ef;color:#34b083}.variant-card h2{font-size:20px;margin-bottom:6px}.variant-card>p{font-size:11px;color:#8da0b8}.variant-meta{display:flex;align-items:center;gap:15px;font-size:10px;color:#889bb4;margin:20px 0 24px}.variant-meta span{display:flex;align-items:center;gap:5px}.variant-card>.btn,.variant-card>.btn-secondary{width:100%;font-size:12px;justify-content:space-between;padding:11px 15px}.variant-card>.text-button{width:100%;margin-top:8px;text-align:center;font-size:11px}.variant-score{display:flex;align-items:center;gap:12px;margin:-3px 0 19px}.variant-score strong{font-size:24px;color:#1a4b71}.variant-score small{font-size:12px}.variant-score>span{font-size:10px;color:#8092aa}.variant-note{display:flex;align-items:center;gap:17px;margin-top:28px;padding:20px 25px}.variant-note svg{color:#1676f5;flex-shrink:0}.variant-note strong{font-size:13px}.variant-note p{font-size:11px;margin-top:3px}.builder-layout{display:grid;grid-template-columns:1fr 290px;gap:23px;align-items:start}.builder-groups{display:flex;flex-direction:column;gap:21px}.number-group{overflow:hidden}.number-group>div:first-child{padding:18px 23px;background:linear-gradient(100deg,#eef7ff,#f6faff)}.number-group h2{font-size:17px}.number-group h2 span{font-size:14px;color:#59799d;font-weight:400}.number-group small{display:block;margin-top:4px;font-size:10px}.number-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:11px;padding:22px}.number-grid button{background:#fff;border:1px solid #dfe8f3;border-radius:9px;aspect-ratio:1.1;font-size:15px;color:#33496a;font-weight:650;transition:.15s}.number-grid button.selected{background:#1676f5;color:#fff;border-color:#1676f5;box-shadow:0 3px 10px #1680f424}.number-grid button:hover{border-color:#1676f5}.builder-summary{padding:25px;position:sticky;top:20px}.builder-summary h2{margin:17px 0 22px;font-size:22px}.builder-summary label:not(.check-label){font-size:11px;margin-bottom:17px;color:#7187a3;font-weight:400}.builder-summary input:not([type=checkbox]),.builder-summary select{font-size:12px;padding:10px 11px}.builder-total{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:14px 0;font-size:11px;color:#6c84a0}.builder-total strong{font-size:21px;color:#1676f5}.builder-summary .check-label{margin:12px 0 21px;font-size:11px}.builder-summary .btn,.builder-summary .btn-secondary{width:100%;margin:6px 0;font-size:12px}.builder-format{font-size:11px;line-height:1.8;margin:0 6px}.save-confirm{font-size:11px;color:#17aa7d;display:flex;gap:5px;align-items:center}.training-top{display:flex;align-items:center;gap:16px;padding:23px 25px;background:#fff;border:1px solid #e7edf5;border-radius:14px 14px 0 0}.training-top>.icon-button{background:#edf6ff;color:#1676f5}.training-top h1{font-size:21px;letter-spacing:-.4px}.training-top p{font-size:11px;margin-top:4px}.training-indicators{display:flex;align-items:center;gap:20px;margin-left:auto;font-size:12px;white-space:nowrap}.training-indicators>span:last-child{display:flex;align-items:center;gap:7px;color:#417cbd}.training-indicators>strong{font-size:15px}.training-indicators strong span{color:#9db0c5;font-size:12px;font-weight:400}.training-progress{background:#e5f0fd;height:4px;border-radius:0 0 8px 8px;margin-bottom:22px;overflow:hidden}.training-progress span{height:100%;display:block;background:#1681ff;transition:width .3s}.training-layout{display:grid;grid-template-columns:1fr 235px;gap:22px;align-items:start}.question-panel{padding:29px}.question-meta{display:flex;justify-content:space-between;gap:10px;font-size:10px;color:#889db6;margin-bottom:22px}.question-meta .page-eyebrow{font-size:10px;color:#1676f5;letter-spacing:1px;margin:0}.question-text{font-size:19px;line-height:1.6;font-weight:650;white-space:pre-line;letter-spacing:-.2px}.question-image{display:block;max-width:100%;height:auto;border-radius:8px;max-height:680px;object-fit:contain;margin:20px auto}.answer-options{display:flex;flex-direction:column;gap:12px;margin-top:27px}.answer-option{display:flex;flex-direction:row;align-items:center;gap:13px;border:1px solid #dfe8f3;border-radius:11px;padding:15px 17px;font-size:14px;line-height:1.7;font-weight:400;cursor:pointer;color:#32476a;transition:.15s}.answer-option.selected{border-color:#1676f5;background:#edf5ff}.answer-option>input{margin:0}.answer-option>span:nth-child(2){color:#5c7597;flex-shrink:0}.hint-block{background:#f0f7ff;border-radius:11px;margin:25px 0}.hint-block>button{background:none;display:flex;align-items:center;justify-content:space-between;color:#41668f;width:100%;padding:17px 18px;font-size:13px;font-weight:650}.hint-block>button>span{display:flex;gap:12px;align-items:center}.hint-block>button svg:first-child{color:#e4b841}.hint-block>p{padding:0 18px 18px 53px;font-size:12px;line-height:1.8}.question-controls{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:32px}.question-controls>div{display:flex;gap:10px}.question-controls .btn,.question-controls .btn-secondary{min-width:91px;font-size:12px}.question-controls .check-label{font-size:11px}.question-source{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:21px;padding-top:16px;border-top:1px solid #eff3f8}.question-source .text-button{font-size:10px;color:#a0afc1}.save-state{display:flex;align-items:center;gap:5px;font-size:10px;color:#8dad9f;background:none}.save-state.save-error{color:#cf624c}.original-image{max-width:100%;height:auto;display:block;margin:15px auto}.question-navigation{padding:23px 19px;position:sticky;top:20px}.question-navigation h3{font-size:14px}.question-navigation>p{font-size:11px;margin:6px 0 20px}.question-nav-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}.question-nav-grid button{background:#f6f9fd;border:1px solid #e0e8f2;aspect-ratio:1;border-radius:7px;font-size:11px;color:#8c9db3;position:relative}.question-nav-grid button.answered{background:#e7f8ee;border-color:#b5e6cc;color:#1b9c6e}.question-nav-grid button.current{background:#1676f5;color:#fff;border-color:#1676f5;box-shadow:0 2px 6px #1676f538}.question-nav-grid button.flagged:after{content:"";position:absolute;right:2px;top:2px;width:5px;height:5px;border-radius:50%;background:#f5b345}.nav-legend{margin:20px 0;display:flex;gap:12px;font-size:9px;color:#8f9fb3}.nav-legend>span{display:flex;gap:4px;align-items:center}.nav-legend i{width:7px;height:7px;border-radius:2px}.nav-legend .answered{background:#a5dfc3}.nav-legend .flagged{background:#f5b345}.question-navigation>.btn-secondary{width:100%;font-size:11px;padding:11px;min-height:38px}.question-navigation>small{display:block;font-size:10px;line-height:1.8;margin-top:15px}.short-answer,.extended-answer{margin-top:24px;color:#697c98;font-weight:400;font-size:12px}.short-answer input{max-width:350px;font-size:17px!important}.short-answer small,.extended-answer small{font-size:10px}.extended-answer textarea{width:100%;font-size:14px;font-weight:400}.context-block{background:#f5f8fc;border:1px solid #e7edf5;border-radius:10px;padding:15px;margin-bottom:23px}.context-block summary{cursor:pointer;color:#536e8f;display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:600}.context-block p{font-size:13px;line-height:1.8;white-space:pre-line;margin-top:15px}.context-block img{max-width:100%;display:block;margin-top:13px;border-radius:5px}.result-summary{display:flex;align-items:center;gap:24px;padding:28px 33px}.result-icon{width:83px;height:83px;display:flex;align-items:center;justify-content:center;color:#e9ac37;background:#fff5de;border-radius:22px}.result-summary h2{font-size:42px;line-height:1.2;letter-spacing:-1.5px}.result-summary h2 span{font-size:23px;color:#8ea2bc;font-weight:400}.result-summary p{font-size:12px;margin:5px 0}.result-summary small{font-size:10px}.result-metrics{margin-left:auto;display:flex;gap:33px}.result-metrics>span{font-size:11px;color:#8a9cb4;display:flex;flex-direction:column;gap:5px}.result-metrics strong{font-size:22px;color:#334e71}.assessment-note{display:flex;gap:11px;align-items:flex-start;margin-top:17px}.assessment-note svg{flex-shrink:0;color:#529adc;margin-top:3px}.assessment-note p{font-size:12px}.result-actions{display:flex;gap:12px;margin:24px 0}.result-list{display:flex;flex-direction:column;gap:13px}.result-item{overflow:hidden}.result-row{padding:18px 21px;display:flex;align-items:center;gap:15px;width:100%;text-align:left;background:none;color:#65819e}.result-row>span:nth-child(2){flex:1}.result-row strong{display:block;font-size:13px;color:#3b536f}.result-row small{display:block;font-size:11px;line-height:1.7;margin-top:3px}.result-row>b{font-size:13px;white-space:nowrap}.result-state{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:9px;flex-shrink:0}.result-state.correct{background:#e5f7ed;color:#26ae7a}.result-state.incorrect{background:#fceeea;color:#d88771}.result-state.pending{background:#fff5df;color:#dfa54d}.result-detail{padding:24px;border-top:1px solid #eaf0f6}.result-detail>.question-text{font-size:14px;margin-bottom:18px;line-height:1.8}.answer-review,.correct-review{padding:15px 19px;background:#f5f8fc;border-radius:9px;margin:15px 0;font-size:12px}.correct-review{background:#eef9f3}.answer-review strong,.correct-review strong{color:#66889a;font-size:11px}.answer-review p,.correct-review p{white-space:pre-line;margin-top:7px;line-height:1.9;color:#536b82}.criteria-text{border-top:1px solid #d9ebdf;padding-top:12px}.self-assessment{font-size:12px;color:#68809e;margin:22px 0}.self-assessment>div{display:flex;gap:9px;margin-top:11px;flex-wrap:wrap}.self-assessment button{padding:9px 16px;border:1px solid #d9e6f4;background:#f7fbff;border-radius:9px;color:#6485a8;font-size:11px}.self-assessment button.selected{background:#1676f5;color:#fff;border-color:#1676f5}.bookmark-button{display:flex;align-items:center;gap:8px;font-size:11px;color:#5b8fc0;background:none;padding:8px 0;margin:10px 0}.result-detail>.muted{display:block;font-size:10px}.stats-overview{display:grid;grid-template-columns:290px 1fr;gap:23px}.stats-overview>.panel{padding:25px}.stats-overview>.panel:first-child{text-align:center}.stats-overview>.panel:first-child h2{text-align:left;margin-bottom:24px}.stats-overview .ring{margin:25px auto;width:165px!important;height:165px!important}.stats-overview>.panel:first-child p{font-size:12px}.topic-statistics h2{margin-bottom:14px}.topic-statistics button{display:flex;align-items:center;gap:12px;width:100%;background:none;border-bottom:1px solid #eef3f8;padding:11px 0;font-size:11px;color:#65829e;text-align:left}.topic-statistics button:last-child{border-bottom:0}.topic-statistics button>span{min-width:47%;flex:1}.topic-statistics button>strong{min-width:35px;text-align:right;font-size:11px;color:#5d819f}.topic-statistics .progress-track{width:150px;height:6px}.recommendations{display:flex;align-items:center;gap:18px;margin-top:24px;padding:23px}.recommendations>svg{color:#e5b444;flex-shrink:0}.recommendations p{font-size:11px;line-height:1.8;margin-top:5px}.recommendations>div{flex:1}.history-heading{display:flex;align-items:center;gap:10px;margin:30px 0 18px}.history-heading span{background:#e7f1ff;color:#6c95be;padding:3px 8px;border-radius:6px;font-size:10px}.history-table{padding:8px 23px}.history-head,.history-row{display:grid;grid-template-columns:1fr 90px 110px 80px 18px;gap:15px;align-items:center}.history-head{padding:12px 0;font-size:10px;color:#a5b3c5}.history-row{background:none;border-top:1px solid #eaf0f7;width:100%;text-align:left;padding:20px 0;font-size:11px;color:#8096b0}.history-row>span:first-child{display:flex;align-items:center;gap:12px;color:#688aa8}.history-row strong{font-size:12px;color:#476785}.history-score{font-size:16px;color:#1b9b79}.history-score small{font-size:10px;margin-left:2px}.achievement-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:21px}.achievement{text-align:center;padding:31px 22px;filter:grayscale(.6);opacity:.8}.achievement.unlocked{filter:none;opacity:1;border-color:#cbe7f8}.achievement-icon{margin:0 auto 18px;width:73px;height:73px;display:flex;align-items:center;justify-content:center;border-radius:20px;background:#e8eef6;color:#a3b5ca}.unlocked .achievement-icon{background:#fff2d5;color:#e8ac36}.achievement h2{font-size:17px;margin-bottom:7px}.achievement p{font-size:11px;margin-bottom:20px}.achievement.unlocked .status-chip{background:#e7f8ef;color:#26ae7a}.settings-layout{display:grid;grid-template-columns:1fr 310px;gap:24px;align-items:start}.settings-form{padding:28px}.settings-form h2{margin-bottom:21px}.settings-form h2:nth-of-type(2){margin-top:30px}.settings-form>label:not(.check-label){margin-bottom:20px;font-size:12px;color:#6d85a1;font-weight:400}.settings-form>.check-label{margin-bottom:25px}.settings-form>.soft-note{margin-bottom:18px}.profile-info{padding:25px}.profile-info h2{margin:18px 0 12px}.profile-info p{font-size:12px;line-height:1.9;margin-bottom:22px}.profile-info>.small,.profile-info>small{display:block;margin-top:25px;font-size:10px;line-height:1.8}.empty{padding:55px 20px;text-align:center;display:flex;align-items:center;justify-content:center;flex-direction:column}.empty>svg{color:#abc2d9;margin-bottom:17px}.empty h3{font-size:19px;margin-bottom:10px}.empty p{font-size:13px;line-height:1.9;max-width:450px;margin-bottom:23px}.empty .btn{font-size:12px}.modal-backdrop{position:fixed;inset:0;z-index:100;background:#152c4a65;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:22px;overflow:auto}.modal{width:520px;max-width:100%;background:#fff;border-radius:20px;padding:33px;position:relative;box-shadow:0 20px 80px #19345b20;max-height:92vh;overflow:auto;outline:none}.modal h2{font-size:25px;letter-spacing:-.6px;padding-right:25px;margin-bottom:12px}.modal>p{font-size:13px;line-height:1.8;margin-bottom:20px}.modal-close{position:absolute;top:17px;right:17px}.modal form{display:flex;flex-direction:column;gap:18px;margin-top:22px}.modal label{font-size:12px;color:#6e85a0;font-weight:400}.modal input:not([type=file]){font-size:14px}.modal .btn{width:100%;margin-top:5px}.form-error{background:#fff0ed;color:#b56453;border-radius:8px;padding:10px 12px;font-size:12px;margin:10px 0;line-height:1.7}.auth-switch{font-size:12px;text-align:center;margin:23px 0;color:#93a3b9}.auth-switch button{background:none;color:#1676f5;font-weight:600}.vk-button{background:#07f;color:#fff;display:flex;align-items:center;justify-content:center;gap:12px;border-radius:10px;min-height:45px;font-size:13px;margin:15px 0}.modal>.muted{display:block;text-align:center;line-height:1.7}.modal-actions{display:flex;gap:10px;margin-top:20px}.modal-actions .btn{width:auto;margin:0}.json-editor{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:11px!important;width:100%;margin:10px 0 20px;line-height:1.7}.admin-toolbar{display:flex;gap:10px;margin:20px 0;align-items:center}.admin-toolbar>.input-search{flex:1}.admin-toolbar>.btn-secondary{font-size:11px;min-height:40px;padding:10px 12px}.admin-question-list{margin:20px 0;padding:0 23px}.admin-question-list button{padding:18px 0;display:flex;width:100%;align-items:center;gap:20px;text-align:left;background:none;border-bottom:1px solid #eaf0f6;color:#6b91b2}.admin-question-list button:last-child{border-bottom:0}.admin-question-list button>span{flex:1}.admin-question-list strong{font-size:12px;font-weight:500;color:#4f6d88}.admin-question-list small{display:block;margin-top:5px;font-size:10px}.admin-question-list b{min-width:38px;font-size:12px;color:#1676f5}.admin-users{padding:0 23px}.admin-users>div{display:flex;align-items:center;gap:14px;padding:18px 0;border-bottom:1px solid #eaf0f6}.admin-users>div>span:nth-child(2){flex:1}.admin-users strong{font-size:12px}.admin-users small{display:block;font-size:10px;margin-top:4px}.admin-users select{font-size:11px;padding:8px 12px}@media(min-width:1550px){.hero{padding-top:90px;padding-bottom:70px}.main-content{padding-top:45px}.dashboard-middle .panel{padding:29px}.stat-card{padding:28px}.sidebar{width:255px}.workspace{margin-left:255px}.topbar{padding-left:max(40px,calc((100vw - 1445px)/2));padding-right:max(40px,calc((100vw - 1445px)/2))}}@media(max-width:1200px){.sidebar{width:212px;padding-left:13px;padding-right:13px}.workspace{margin-left:212px}.main-content{padding:30px 26px}.topbar{padding:0 26px}.header-tools{gap:11px}.header-search{display:none}.stat-card{gap:12px;padding:20px 16px}.stat-card .icon-bubble{width:43px;height:43px}.stat-card strong{font-size:28px}.stat-card small{font-size:9px}.stat-card>div>span{font-size:10px}.progress-inner{gap:18px}.dashboard-middle{grid-template-columns:1.6fr 1fr}.dashboard-middle .panel{padding:20px}.progress-inner .ring{width:122px!important;height:122px!important;padding:10px}.ring strong{font-size:28px}.chart-bars{gap:6px}.continue-panel>div{flex-wrap:wrap}.continue-panel .btn{font-size:11px;margin-left:0}.goal-note{padding:12px;font-size:10px}.dashboard-actions{grid-template-columns:1.2fr 1fr}.variants-grid{grid-template-columns:repeat(2,1fr)}.topic-row{gap:12px}.topic-row .progress-track{width:100px}.topic-title small{font-size:10px}.topic-title strong{font-size:12px}.heading-badge{max-width:260px;font-size:10px;padding:13px}.builder-layout{grid-template-columns:1fr 245px;gap:18px}.number-grid{gap:8px;padding:19px}.number-grid button{font-size:13px}.builder-summary{padding:20px}.number-group h2{font-size:15px}.number-group h2 span{font-size:12px}.training-layout{grid-template-columns:1fr 190px;gap:17px}.training-top{padding:20px}.training-top h1{font-size:18px}.training-indicators{gap:12px}.training-indicators .status-chip{display:none}.question-panel{padding:25px}.question-navigation{padding:20px 14px}.question-controls{flex-wrap:wrap}.result-metrics{gap:20px}.result-summary{padding:25px;gap:19px}.result-summary small{max-width:190px;display:block}.stats-overview{grid-template-columns:220px 1fr}.landing-features,.landing-footer{margin-left:35px;margin-right:35px}.hero-social-proof{gap:12px}.card-achievement{left:0}.hero-art img{width:110%}}@media(max-width:980px){.sidebar{width:190px}.sidebar .logo{font-size:24px;gap:8px}.sidebar .logo-icon{width:35px;height:35px;border-radius:10px}.sidebar .logo-caption{font-size:6.5px}.workspace{margin-left:190px}.sidebar nav a{font-size:12px;gap:11px;padding:12px}.main-content{padding:27px 21px}.topbar{padding:0 21px;height:75px}.topnav{gap:24px;font-size:12px}.profile-button>span:not(.avatar){display:none}h1{font-size:29px}.page-heading{margin-bottom:23px}.page-heading p{font-size:12px}.goal-note{display:none}.stat-grid{gap:12px}.stat-card{padding:17px 13px;gap:10px;align-items:flex-start}.stat-card .icon-bubble{width:34px;height:34px}.stat-card .icon-bubble svg{width:21px}.stat-card strong{font-size:24px}.stat-card small{white-space:normal;line-height:1.5}.dashboard-middle{grid-template-columns:1fr}.progress-inner{justify-content:initial;gap:40px}.score-chart{max-width:70%}.streak-panel .week-dots{max-width:300px}.streak-panel{display:grid;grid-template-columns:1fr 1.1fr;gap:0 25px}.streak-panel h2{grid-column:1}.streak-panel .streak-count{grid-column:1;margin:15px 0 0}.streak-panel .week-dots{grid-column:2;grid-row:1/3;align-items:center;margin:0}.streak-panel .soft-note{grid-column:1/3;margin-top:17px}.dashboard-actions{grid-template-columns:1fr}.continue-panel .btn{margin-left:auto}.next-panel>div{margin-top:14px}.motivation-banner>span{display:none}.app-footer{margin:0 21px}.app-footer>div{gap:12px}.heading-badge{display:none}.topic-row>.topic-icon{display:none}.topic-row .progress-track{width:80px}.topic-row .topic-solved{min-width:45px}.topic-title small{font-size:9px}.theory-layout{grid-template-columns:1fr}.theory-summary{position:static}.builder-layout{grid-template-columns:1fr}.builder-summary{position:static}.builder-summary .icon-bubble{display:none}.number-grid{gap:12px}.number-grid button{aspect-ratio:1.3;font-size:15px}.builder-summary h2{margin-top:0}.training-layout{grid-template-columns:1fr}.question-navigation{position:static}.question-nav-grid{grid-template-columns:repeat(12,1fr)}.question-navigation>p{margin-bottom:14px}.question-navigation>.btn-secondary{max-width:210px}.nav-legend{margin:14px 0}.training-top h1{font-size:17px}.training-top p{display:none}.training-indicators{font-size:11px}.question-controls>div{margin-left:auto}.result-summary{flex-wrap:wrap}.result-metrics{width:100%;margin:8px 0 0;padding-top:16px;border-top:1px solid #edf3f8;justify-content:space-around}.result-summary small{max-width:300px}.stats-overview{grid-template-columns:1fr}.stats-overview>.panel:first-child{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-around;gap:12px}.stats-overview>.panel:first-child h2{width:100%;margin:0}.stats-overview .ring{width:130px!important;height:130px!important;margin:10px}.achievement-grid{grid-template-columns:repeat(2,1fr)}.settings-layout{grid-template-columns:1fr}.hero{padding-top:45px;grid-template-columns:1fr 1fr;min-height:550px}.hero h1{font-size:43px;letter-spacing:-1.8px}.hero-subtitle{font-size:14px}.hero-actions{gap:12px;flex-wrap:wrap}.hero-actions .btn{font-size:14px;padding:15px 21px}.hero-art{height:390px}.hero-art img{width:115%}.hero-social-proof{margin-top:30px;gap:9px;font-size:10px}.card-exam{display:none}.card-achievement{bottom:4px;left:15px;padding:10px 13px}.floating-card strong{font-size:10px}.floating-card small{font-size:9px}.landing-features{gap:20px;padding:25px 0}.landing-features article{align-items:flex-start;gap:10px}.landing-features .icon-bubble{width:39px;height:39px}.landing-features .icon-bubble svg{width:21px}.landing-features h3{font-size:12px}.landing-features p{font-size:10px}}@media(max-width:760px){body{font-size:14px}.sidebar{transform:translate(-100%);transition:transform .2s;width:250px;padding:25px 18px;box-shadow:5px 0 40px #18345518}.sidebar.open{transform:translate(0)}.sidebar .logo{font-size:29px}.sidebar .logo-caption{font-size:8px}.sidebar .logo-icon{width:42px;height:42px}.sidebar nav a{font-size:14px;gap:14px;min-height:48px;padding:12px 17px}.sidebar-close{display:flex;position:absolute;right:10px;top:11px;width:25px;height:25px}.sidebar-close svg{width:17px}.sidebar-note{margin-top:auto}.workspace{margin-left:0}.menu-overlay{position:fixed;inset:0;z-index:39;background:#19365544;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.topbar{height:74px;padding:0 19px;background:#fffffffa;position:sticky;top:0;z-index:30}.topnav{display:none}.mobile-menu{display:inline-flex;margin-right:10px;color:#496480}.mobile-logo{display:flex;flex:1}.mobile-logo .logo{font-size:23px;gap:8px}.mobile-logo .logo-icon{width:33px;height:33px;border-radius:10px}.mobile-logo .logo-icon svg{width:21px}.mobile-logo .logo-caption{font-size:6px;letter-spacing:.8px;margin-top:5px}.header-tools{gap:8px}.header-tools .notification{width:27px}.profile-button{padding:0}.profile-button>.lucide-chevron-down{display:none}.avatar{height:33px;width:33px;font-size:13px}.notification-panel{right:15px;top:67px;width:290px}.main-content{padding:27px 19px 30px;min-height:calc(100vh - 74px)}.page-heading{margin-bottom:21px;align-items:flex-start}.page-eyebrow{font-size:9px;letter-spacing:1.1px;margin-bottom:9px}h1{font-size:29px;letter-spacing:-.8px}.page-heading p{font-size:12px;margin-top:8px}.guest-note{font-size:10px;line-height:1.8;margin:0 0 18px;align-items:flex-start}.guest-note>svg{width:15px;height:15px;margin-top:3px}.stat-grid{gap:9px;margin-bottom:16px}.stat-card{padding:12px 10px;display:block;border-radius:12px}.stat-card .icon-bubble{width:28px;height:28px;margin-bottom:9px}.stat-card .icon-bubble svg{width:19px;height:19px}.stat-card>div>span{font-size:9px;line-height:1.5;margin-bottom:7px;min-height:27px}.stat-card strong{font-size:24px}.stat-card small{font-size:8px;margin-top:5px}.dashboard-middle{gap:16px;margin-bottom:16px}.dashboard-middle .panel{padding:20px}.section-heading h2{font-size:17px}.section-heading a{font-size:9px}.progress-inner{gap:25px;margin-top:22px}.progress-inner .ring{width:112px!important;height:112px!important;padding:9px}.ring strong{font-size:26px}.ring span{font-size:8px}.score-chart>p{font-size:8px}.chart-placeholder p{font-size:9px;top:25px}.chart-placeholder>div{width:14px}.chart-bars span{width:16px}.chart-bars small{font-size:7px}.streak-panel{grid-template-columns:1fr 1fr;gap:0 15px}.streak-panel h2{font-size:17px;grid-column:1/3}.streak-panel .streak-count{margin-top:17px;grid-column:1}.streak-count{gap:10px}.streak-count .icon-bubble{width:35px;height:35px}.streak-count .icon-bubble svg{width:24px}.streak-count strong{font-size:23px}.streak-count span:not(.icon-bubble){font-size:9px}.streak-panel .week-dots{grid-row:2;grid-column:2;gap:2px;padding-top:17px}.week-dots svg{width:17px;height:17px}.week-dots small{font-size:7px}.streak-panel .soft-note{font-size:10px}.dashboard-actions{gap:16px}.dashboard-actions .panel{padding:20px}.dashboard-actions h2{font-size:17px}.continue-panel>div{gap:10px;margin-top:16px}.continue-panel .icon-bubble,.next-panel .icon-bubble{width:39px;height:39px}.continue-panel strong{font-size:11px}.continue-panel p{font-size:9px}.continue-panel .btn{font-size:11px;min-height:40px;padding:10px 13px;gap:7px}.next-panel>div{gap:12px}.next-panel strong{font-size:11px}.next-panel small{font-size:9px}.motivation-banner{padding:20px 19px;gap:14px;margin-top:17px;border-radius:12px}.motivation-banner>svg{width:33px;height:33px}.motivation-banner h3{font-size:12px}.motivation-banner p{font-size:10px;line-height:1.8}.app-footer{margin:0 19px 78px;padding:20px 0;display:block;font-size:9px}.app-footer>div{gap:18px;margin-top:12px;flex-wrap:wrap}.app-footer button,.app-footer a{font-size:9px}.bottomnav{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:35;background:#fff;border-top:1px solid #e3ecf6;padding:11px 7px calc(10px + env(safe-area-inset-bottom));justify-content:space-around;box-shadow:0 -3px 18px #234b7405}.bottomnav a{display:flex;flex-direction:column;align-items:center;gap:5px;font-size:9px;color:#8096b1;width:25%}.bottomnav a.active{color:#1676f5}.bottomnav a.active svg{fill:#e0efff}.topic-toolbar{margin-bottom:13px}.topic-toolbar .input-search{width:100%}.topic-toolbar>.muted{display:none}.topics-panel{padding:0 16px;border-radius:12px}.topic-row{min-height:91px;gap:12px;flex-wrap:wrap;position:relative;padding:15px 29px 15px 33px;align-content:center}.topic-row>input{position:absolute;left:0;top:24px;width:18px;height:18px}.topic-title{width:100%;flex:initial;padding:0;flex-basis:100%;line-height:1.7}.topic-title strong{font-size:12px;font-weight:550}.topic-title small{display:none}.topic-row .topic-solved{font-size:10px;min-width:0;text-align:left}.topic-row .progress-track{flex:1;width:auto;max-width:160px;height:6px}.topic-percent{font-size:10px;min-width:30px}.topic-row>.icon-button{position:absolute;right:-7px;top:28px;width:27px}.selection-footer{margin:19px 0;gap:10px}.selection-footer .check-label{font-size:11px;gap:6px}.selection-footer .check-label input{width:17px;height:17px}.selection-footer>div{gap:11px;font-size:10px}.selection-footer label:not(.check-label){font-size:10px;gap:5px}.selection-footer select{font-size:11px;padding:5px 7px!important}.full-width{min-height:50px;font-size:14px}.theory-block{padding:22px}.theory-block h2{font-size:19px}.theory-block p{font-size:13px;line-height:1.9}.theory-summary{padding:22px}.back-link{font-size:11px;margin-bottom:19px}.variants-grid{grid-template-columns:repeat(2,1fr);gap:12px}.variant-card{padding:17px 13px;border-radius:12px}.variant-card-top{gap:6px;margin-bottom:15px}.variant-card .icon-bubble{width:30px;height:30px;border-radius:8px}.variant-card .icon-bubble svg{width:18px;height:18px}.status-chip{font-size:8px;padding:4px 6px}.variant-card h2{font-size:17px}.variant-card>p{font-size:9px;line-height:1.8}.variant-meta{margin:15px 0;display:flex;flex-wrap:wrap;gap:6px;font-size:8px}.variant-meta svg{width:12px;height:12px}.variant-card>.btn,.variant-card>.btn-secondary{font-size:10px;padding:10px;gap:4px;min-height:37px}.variant-card>.btn svg,.variant-card>.btn-secondary svg{width:14px}.variant-score{display:block;margin:14px 0}.variant-score>span{display:block;font-size:9px}.tabs{gap:2px;margin-bottom:20px}.tabs button{font-size:11px;padding:12px 13px}.variant-note{padding:17px;align-items:flex-start}.variant-note svg{width:24px;height:24px;margin-top:4px}.variant-note strong{font-size:11px}.variant-note p{font-size:10px;line-height:1.8}.number-group>div:first-child{padding:17px}.number-group h2{font-size:15px}.number-group h2 span{font-size:12px}.number-grid{padding:17px;gap:8px}.number-grid button{font-size:13px;aspect-ratio:1;border-radius:7px}.builder-summary{padding:22px}.builder-summary label:not(.check-label){font-size:12px}.builder-summary input:not([type=checkbox]),.builder-summary select{font-size:14px}.builder-summary .btn,.builder-summary .btn-secondary{min-height:45px;font-size:13px}.training-content{padding:19px 13px 30px}.training-top{padding:16px 15px;gap:10px;flex-wrap:wrap}.training-top>.icon-button{width:29px;height:29px}.training-top>.icon-button svg{width:20px}.training-top h1{font-size:17px}.training-indicators{width:100%;margin-left:0;padding-top:14px;justify-content:space-between;border-top:1px solid #edf2f8;margin-top:3px;font-size:12px}.training-indicators .status-chip{display:inline-flex;font-size:9px;color:#1676f5;background:#edf5ff}.training-indicators>strong{font-size:13px}.training-progress{margin-bottom:14px}.training-layout{gap:14px}.question-panel{padding:22px 17px;border-radius:12px}.question-meta{font-size:9px;gap:7px;margin-bottom:21px}.question-meta .page-eyebrow{font-size:9px}.question-text{font-size:17px;line-height:1.65}.answer-options{gap:10px;margin-top:23px}.answer-option{font-size:12px;padding:13px 12px;gap:10px;align-items:flex-start;line-height:1.8}.answer-option input{width:17px;height:17px;margin-top:3px}.answer-option span:nth-child(2){font-size:12px}.hint-block{margin:23px 0}.hint-block>button{padding:15px;font-size:12px}.hint-block>button>span{gap:9px}.hint-block>p{font-size:11px;padding:0 15px 17px 45px}.question-controls{margin-top:24px;gap:21px}.question-controls>.check-label{width:100%;font-size:11px}.question-controls>div{width:100%;margin:0}.question-controls .btn,.question-controls .btn-secondary{flex:1;min-height:43px;font-size:12px}.question-source{margin-top:20px}.question-source .text-button,.save-state{font-size:9px}.question-navigation{padding:20px;border-radius:12px}.question-nav-grid{grid-template-columns:repeat(8,1fr);gap:8px}.question-navigation h3{font-size:15px}.question-navigation>small{font-size:10px}.short-answer input{width:100%;max-width:100%;font-size:16px!important}.extended-answer textarea{font-size:13px}.context-block{padding:13px}.context-block summary{font-size:11px}.result-summary{padding:23px 20px;gap:19px;border-radius:13px}.result-icon{width:62px;height:62px;border-radius:17px}.result-icon svg{width:35px}.result-summary h2{font-size:35px}.result-summary h2 span{font-size:20px}.result-summary small{max-width:210px;line-height:1.8;font-size:9px}.result-summary p{font-size:11px}.result-metrics{gap:15px}.result-metrics strong{font-size:19px}.result-metrics>span{font-size:9px}.assessment-note{padding:14px 15px;gap:9px}.assessment-note svg{width:18px}.assessment-note p{font-size:11px}.result-actions{flex-wrap:wrap;margin:21px 0;gap:10px}.result-actions .btn,.result-actions .btn-secondary{font-size:11px;min-height:42px;padding:11px 16px}.result-row{padding:16px;gap:10px;align-items:flex-start}.result-row small{font-size:10px}.result-row strong{font-size:12px}.result-row>b{font-size:11px;margin-top:5px}.result-row>.lucide-chevron-down{width:15px;margin-top:5px}.result-state{width:27px;height:27px;border-radius:7px}.result-detail{padding:18px}.answer-review,.correct-review{padding:14px 15px;font-size:11px}.self-assessment button{font-size:10px;padding:9px 12px}.topic-statistics button{font-size:10px;gap:10px;line-height:1.7;padding:12px 0}.topic-statistics button>span{min-width:50%}.topic-statistics .progress-track{width:85px}.topic-statistics button>strong{font-size:10px;min-width:30px}.stats-overview>.panel{padding:22px}.recommendations{padding:20px;flex-wrap:wrap;gap:12px}.recommendations>div{min-width:80%}.recommendations h2{font-size:17px}.recommendations p{font-size:11px}.recommendations .btn{font-size:11px;min-height:39px}.history-table{padding:5px 16px}.history-head{display:none}.history-row{grid-template-columns:1fr 45px 12px;gap:8px;padding:19px 0}.history-row:first-of-type{border-top:0}.history-row>span:nth-child(2),.history-row>span:nth-child(3){display:none}.history-row>span:first-child{gap:9px}.history-row strong{font-size:11px}.history-row>svg{width:15px}.history-score{font-size:15px}.achievement-grid{gap:13px}.achievement{padding:24px 14px}.achievement h2{font-size:15px}.achievement p{font-size:10px;line-height:1.8}.achievement-icon{width:60px;height:60px;border-radius:17px}.achievement-icon svg{width:29px}.settings-form,.profile-info{padding:23px}.admin-toolbar{flex-wrap:wrap}.admin-toolbar>.input-search{min-width:100%}.admin-question-list{padding:0 15px}.admin-question-list button{gap:12px}.admin-question-list strong{font-size:11px}.admin-question-list small{font-size:9px}.admin-question-list b{font-size:11px;min-width:30px}.admin-users{padding:0 15px}.admin-users>div{gap:9px;flex-wrap:wrap}.admin-users small{font-size:9px}.admin-users select{font-size:10px;padding:6px}.modal-backdrop{padding:15px}.modal{padding:28px 23px;border-radius:17px}.modal h2{font-size:23px}.modal>p{font-size:12px}.modal-actions{flex-wrap:wrap}.modal-actions .btn,.modal-actions .btn-secondary{flex:1;font-size:12px}.landing-header{height:85px;padding:0 23px}.landing-header .logo{font-size:26px}.landing-header .logo-icon{width:37px;height:37px;border-radius:11px}.landing-header .logo-caption{font-size:6.5px}.landing-header nav{gap:0}.landing-header nav>a{display:none}.landing-header nav button{font-size:11px;padding:10px 13px;gap:7px}.hero{padding:37px 24px 0;display:flex;flex-direction:column;min-height:0;text-align:center;overflow:hidden}.hero .eyebrow{font-size:10px;padding:8px 12px}.hero h1{font-size:43px;line-height:1.15;letter-spacing:-1.6px;margin:21px 0}.hero-subtitle{font-size:13px;line-height:1.9}.hero-actions{justify-content:center;gap:14px;margin-top:27px;flex-direction:column}.hero-actions .btn{min-height:50px;width:100%;max-width:310px;font-size:14px}.hero-actions>.text-button{font-size:12px;padding:0}.hero-security{font-size:9px;justify-content:center;margin-top:18px;gap:5px;line-height:1.7}.hero-security svg{width:14px}.hero-social-proof{justify-content:center;gap:13px;font-size:9px;margin-top:26px}.hero-social-proof>span:last-child{display:none}.hero-social-proof svg{width:13px}.hero-art{height:320px;width:100%;max-width:410px;margin-top:31px}.hero-art img{width:110%;height:360px;max-width:450px;top:-15px}.art-orbit{width:90%;top:7px;right:5%}.card-achievement{bottom:15px;left:10%;padding:11px 16px;text-align:left}.card-achievement .icon-bubble{width:30px;height:30px}.card-achievement .icon-bubble svg{width:18px}.floating-card strong{font-size:10px}.floating-card small{font-size:9px}.landing-features{display:flex;flex-direction:column;margin:22px 23px 0;padding:25px 0;gap:23px}.landing-features article{align-items:center;gap:14px;text-align:left}.landing-features .icon-bubble{width:42px;height:42px}.landing-features h3{font-size:13px}.landing-features p{font-size:11px}.landing-about{padding:41px 27px 55px}.landing-about h2{font-size:24px;line-height:1.4;letter-spacing:-.7px}.landing-about p,.landing-about .btn-secondary{font-size:12px}.landing-footer{padding:23px 0;margin:0 23px;display:flex;flex-wrap:wrap;gap:22px}.landing-footer>.logo{font-size:23px;flex:1}.landing-footer .logo-caption{font-size:6px}.landing-footer>p{display:none}.landing-footer>button{font-size:9px}.desktop-break{display:none}.loading-card{padding:45px 20px;font-size:13px}.empty{padding:42px 16px}.empty h3{font-size:18px}.empty p{font-size:12px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}.question-form{display:grid;gap:14px}.question-form label{display:grid;gap:7px;font-size:14px;font-weight:600}.question-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.question-form .checkbox-row{display:flex;align-items:center}.question-form .checkbox-row input{width:18px;height:18px}.question-form textarea{resize:vertical}.question-form .button{width:100%}@media(max-width:480px){.question-form-grid{grid-template-columns:1fr}}@media(max-width:760px){.sidebar:not(.open){visibility:hidden}.sidebar.open{visibility:visible}}.textbook-intro{display:flex;gap:15px;padding:24px;align-items:flex-start;background:linear-gradient(120deg,#eef5ff,#f5fbfa)}.textbook-intro>svg{color:#2875e5;flex-shrink:0;margin-top:3px}.textbook-intro strong{font-size:17px;color:#17233e}.textbook-intro p{font-size:14px;line-height:1.6;color:#657590;margin:8px 0 0}.theory-search{margin:6px 0 8px;width:100%}.theory-search input{width:100%}.textbook-block{padding:0;scroll-margin-top:24px;overflow:hidden}.textbook-block summary{display:flex;gap:18px;align-items:center;justify-content:space-between;cursor:pointer;list-style:none;padding:22px 25px}.textbook-block summary::-webkit-details-marker{display:none}.textbook-block summary>span{display:grid;gap:7px}.textbook-block summary small{color:#4b7daa;font-size:10px;letter-spacing:1.3px;font-weight:700}.textbook-block summary strong{font-size:18px;line-height:1.4;color:#17233e}.textbook-block summary>svg{color:#8093b0;flex-shrink:0;transition:transform .2s}.textbook-block details[open] summary>svg{transform:rotate(180deg)}.textbook-block details[open] summary{border-bottom:1px solid #edf1f7}.textbook-block-body{padding:20px 25px 24px}.textbook-block-body>p,.reading-text>p{line-height:1.8;font-size:16px;color:#43536e;white-space:pre-line;margin:0 0 20px}.textbook-focused{border-color:#8db6ff;box-shadow:0 0 0 3px #eef5ff}.textbook-source{display:flex;align-items:flex-start;gap:8px;font-size:12px;color:#59769b;line-height:1.5}.textbook-source>svg{flex-shrink:0;margin-top:1px}.textbook-adaptation{display:block;font-size:11px;color:#8090a8;line-height:1.6;margin-top:10px}.textbook-remember{display:flex;gap:12px;padding:16px 18px;background:#f0f6ff;border-radius:12px;margin-bottom:20px;color:#42688f}.textbook-remember>svg{flex-shrink:0;color:#2575e6;margin-top:3px}.textbook-remember p{line-height:1.65;font-size:14px;margin:0;white-space:pre-line}.theory-editions{line-height:1.6;margin-top:20px!important;border-top:1px solid #edf1f7;padding-top:15px}.learning-support{margin:24px 0}.learning-support .hint-block{margin:0}.learning-hint{padding:0 23px 20px 58px}.learning-hint>p{padding:0!important;margin:0 0 14px!important;line-height:1.7}.learning-hint>small{display:block;font-size:11px;color:#6f89ab;margin-top:14px}.learning-approach{border-top:1px solid #dce8f8;padding-top:14px}.learning-approach strong{font-size:12px;letter-spacing:.3px;color:#3d6494}.learning-approach p{padding:0!important;margin:6px 0 0!important;font-size:13px;line-height:1.6}.question-reading{border:1px solid #e5edf8;border-radius:14px;padding:16px 18px;margin-top:12px;background:#fff}.question-reading-label{display:flex;align-items:center;gap:8px;font-weight:650;font-size:12px;color:#7388a5;margin-bottom:8px}.question-reading-label svg{color:#4489e8}.reading-reference{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;gap:16px;background:none;border:0;color:#244b80;padding:10px 0;cursor:pointer}.reading-reference+.reading-reference{border-top:1px solid #edf1f7}.reading-reference>span{display:grid;gap:5px}.reading-reference strong{font-size:14px;font-weight:600;line-height:1.4}.reading-reference small{color:#8493a9;font-size:11px;line-height:1.5}.reading-reference>svg{flex-shrink:0;color:#3a7ce1}.reading-reference:hover strong{color:#1767dc}.reading-reference:focus-visible,.textbook-block summary:focus-visible{outline:2px solid #367bed;outline-offset:4px;border-radius:4px}.reading-dialog{max-width:720px!important}.reading-dialog h2{margin-top:12px}.reading-text{margin-top:25px}.reading-actions{display:flex;gap:18px;align-items:center;justify-content:space-between;margin-top:26px;flex-wrap:wrap}.reading-actions a{display:flex;align-items:center;gap:6px;text-decoration:none}.learning-editor{border:1px solid #e2eaf5;border-radius:12px;padding:16px;margin:14px 0}.learning-editor legend{padding:0 8px;font-weight:650}.learning-editor-list{max-height:240px;overflow:auto;margin-top:14px}.learning-editor-list label{display:flex;align-items:flex-start;gap:10px;margin:0!important;padding:8px}.learning-editor-list input{width:16px!important;flex-shrink:0;margin-top:3px}.learning-editor-list span{display:grid;gap:4px;font-size:13px;line-height:1.4}.learning-editor-list small{color:#7890ad;font-size:11px}@media(max-width:680px){.textbook-intro{padding:18px;gap:12px}.textbook-block summary{padding:18px}.textbook-block summary strong{font-size:16px}.textbook-block-body{padding:18px}.learning-hint{padding:0 18px 18px}.question-reading{padding:14px}.reading-dialog{padding:26px 20px!important}.reading-actions .btn{width:100%}.reading-text>p{font-size:15px}.textbook-source{font-size:11px}}:root{--surface-border: #d5e0ed;--surface-shadow: 0 2px 4px rgb(31 58 93 / 3%), 0 5px 14px rgb(31 58 93 / 5%);--text-muted: #61738e;--inner-border: #dce5f0}.panel:not(.textbook-focused):not(.unlocked),.stat-card,.goal-note,.heading-badge,.floating-card,.loading-card{border-color:var(--surface-border)}.panel:not(.textbook-focused),.stat-card,.goal-note,.heading-badge,.floating-card,.loading-card{box-shadow:var(--surface-shadow)}.question-reading,.learning-editor,.answer-option:not(.selected),.number-grid button:not(.selected){border-color:var(--surface-border)}.answer-option:not(.selected):hover,.number-grid button:not(.selected):hover{border-color:#a9bfda}.topic-row,.history-row,.admin-question-list button,.admin-users>div,.textbook-block details[open] summary,.reading-reference+.reading-reference{border-color:var(--inner-border)}.motivation-banner,.sidebar-note{box-shadow:inset 0 0 0 1px #d0e1f2}small,.muted,.page-eyebrow,.section-heading a,.chart-placeholder p,.streak-count span:not(.icon-bubble),.variant-card>p,.variant-meta,.variant-score>span,.question-meta,.question-source .text-button,.result-metrics>span,.history-head,.tabs button:not(.active),.status-chip:not(.active):not(.completed),.textbook-adaptation,.question-reading-label,.reading-reference small,.learning-editor-list small,.hero-security,.landing-footer p,.landing-footer button,.app-footer{color:var(--text-muted)}input::placeholder,textarea::placeholder{color:#73839a}.theory-number{color:#5c7ea5}.save-state:not(.save-error){color:#608270}.subject-switcher{margin:22px 4px 0}.subject-switcher>span{display:block;color:#61738e;font-size:10px;margin:0 0 7px 4px}.subject-switcher>div{display:grid;gap:4px;background:#eef3fa;padding:5px;border:1px solid #d5e0ed;border-radius:12px}.subject-switcher button{display:flex;align-items:center;gap:8px;text-align:left;padding:9px 10px;border-radius:8px;background:transparent;color:#61738e;font-size:11px;font-weight:550}.subject-switcher button.selected{background:#fff;color:#1768d5;box-shadow:0 1px 4px #1f3a5d15}.subject-switcher button:hover:not(.selected){background:#e2ebf7}.sidebar .course-label{margin-top:18px;margin-bottom:14px}.subject-header{margin:0;flex-shrink:0}.subject-header>span{display:none}.subject-header>div{grid-template-columns:repeat(2,max-content)}.subject-header button{justify-content:center;white-space:nowrap;font-size:13px;padding:10px 16px;min-height:42px}.subject-landing{margin:0 0 26px;max-width:335px}.subject-landing>div{grid-template-columns:1fr 1fr}.subject-landing button{justify-content:center;font-size:12px}.cheat-toolbar{display:flex;gap:14px;align-items:center;margin-bottom:22px;flex-wrap:wrap}.cheat-toolbar .input-search{flex:1;min-width:200px;flex-direction:row;gap:9px}.cheat-toolbar select{font-size:12px}.cheat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.cheat-card{padding:24px;scroll-margin-top:24px}.cheat-card h2{font-size:19px;margin:9px 0}.cheat-card p{font-size:13px;line-height:1.75}.cheat-card ul{padding-left:19px;margin:18px 0;color:#344b6b;line-height:1.75;font-size:13px}.cheat-card li+li{margin-top:7px}.cheat-category{font-size:10px;letter-spacing:1px;color:#4177a6;font-weight:650}.cheat-note{padding:12px 14px;border-radius:9px;background:#f1f6fd;font-size:11px!important;color:#61738e}.cheat-sources{display:flex;flex-wrap:wrap;gap:6px 15px;margin-top:15px;font-size:10px;color:#587695}.cheat-sources a{text-decoration:underline;text-underline-offset:3px}.cheat-linked{display:block;margin-top:16px;color:#61738e;font-size:10px}.question-cheats{padding:16px 18px;border:1px solid #d5e0ed;border-radius:13px;margin:18px 0;background:#f8fbff}.question-cheats>strong{display:flex;align-items:center;gap:8px;color:#41648f;font-size:12px}.question-cheats>div{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.question-cheats button{display:flex;gap:7px;align-items:center;text-align:left;background:#fff;border:1px solid #d5e0ed;color:#2869b7;border-radius:8px;padding:8px 11px;font-size:11px}.cheat-dialog .cheat-card{padding:0;border:0;box-shadow:none}.cheat-dialog .cheat-card h2{padding-right:0}.cheat-dialog .btn{margin-top:24px}.practice-warning{margin-bottom:22px;border:1px solid #e5d6b4;background:#fff9eb;color:#826934;line-height:1.7}.practice-warning strong{display:block;margin-bottom:4px}@media(max-width:1080px){.header-search{display:none}.sidebar-note{min-height:140px;margin-top:22px}.sidebar nav a{min-height:42px;padding-top:9px;padding-bottom:9px}.cheat-grid{gap:16px}}@media(max-width:760px){.topbar{height:auto;min-height:74px;flex-wrap:wrap;padding-top:13px;padding-bottom:13px;row-gap:13px}.subject-header{order:3;flex:0 0 100%;width:100%}.subject-header>div{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}.subject-header button{font-size:11px;padding:8px;gap:6px;min-height:40px}.cheat-grid{grid-template-columns:1fr}.cheat-card{padding:21px}.subject-landing{margin:0 auto 23px}.bottomnav a{min-width:0;flex:1}.bottomnav a span{font-size:8px}.practice-warning{font-size:11px}.question-cheats{padding:14px}}.video-section{margin:8px 0 22px}.video-section>.section-heading{margin-bottom:10px}.video-section h2{display:flex;align-items:center;gap:9px}.video-selection-note,.video-privacy{font-size:12px;color:var(--muted);line-height:1.65;margin:0 0 16px}.video-privacy{margin:15px 0 0}.video-list{display:grid;gap:18px}.video-card{padding:23px;min-width:0}.video-card h3{font-size:20px;line-height:1.35;margin:8px 0}.video-author{font-size:12px;color:var(--muted);margin:0 0 15px}.video-frame{aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#e6effa;border:1px solid #c4d4ea}.video-frame iframe{height:100%;width:100%;border:0;display:block}.video-frame>button{width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:10px;border:0;background:linear-gradient(135deg,#eef5ff,#dbe9fc);color:#163e77;font-weight:600;cursor:pointer}.video-frame>button>span{background:#1479f5;border-radius:50%;color:#fff;padding:14px;display:flex}.video-frame small{font-size:12px;font-weight:400}.video-providers{display:flex;gap:6px;margin:12px 0}.video-providers button{border:1px solid #c7d5e8;border-radius:7px;background:#fff;color:#3e587b;padding:5px 11px;font-size:12px;cursor:pointer}.video-providers button[aria-pressed=true]{background:#e9f2ff;border-color:#8dbcf4;color:#0760c6}.video-why{font-size:14px;line-height:1.6;margin:14px 0}.video-signals{display:flex;gap:13px;flex-wrap:wrap;font-size:11px;color:#456084}.video-signals span{display:inline-flex;align-items:center;gap:5px}.video-review{display:block;margin:11px 0;color:#536a8b;line-height:1.6}.video-links{display:flex;gap:15px;flex-wrap:wrap;font-size:12px}.video-links a{display:inline-flex;gap:4px;align-items:center}.video-links a:hover{text-decoration:underline}@media(max-width:650px){.video-card{padding:17px}.video-card h3{font-size:18px}.video-signals{gap:8px}.video-section>.section-heading{flex-wrap:wrap}}