:root{--blue:#2563eb;--blue-dark:#1749b5;--ink:#17243d;--muted:#778297;--line:#e6ebf2;--bg:#f7f9fc;--soft:#edf3ff;--green:#168665;--red:#c84454}*{box-sizing:border-box}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);font-size:14px;line-height:1.55}button,input,select{font:inherit}button,a,input,select{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.5;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #8db4ff;outline-offset:3px}a{color:inherit;text-decoration:none}h1,h2,h3,h4,p{margin-top:0}h1{font-size:34px;letter-spacing:-1.1px;line-height:1.18;font-weight:700}h2{font-size:21px;letter-spacing:-.45px;line-height:1.35}h3{font-size:17px;line-height:1.4}h4{font-size:13px}small{font-size:12px}input,select{color:var(--ink);border:1px solid #dce3ee;border-radius:9px;background:white;padding:11px 13px;max-width:100%}input:not([type=radio]):not([type=checkbox]):not([type=file]){width:100%}input[type=checkbox],input[type=radio]{accent-color:var(--blue)}label{display:block;font-size:13px;font-weight:550}label input,label select{margin-top:7px}fieldset{border:0;padding:0;margin:0}progress{appearance:none;width:100%;height:6px;display:block;border:0;background:#e8edf5;border-radius:9px;overflow:hidden}progress::-webkit-progress-bar{background:#e8edf5}progress::-webkit-progress-value{background:var(--blue);border-radius:9px}progress::-moz-progress-bar{background:var(--blue)}.btn{border:1px solid transparent;border-radius:9px;padding:11px 17px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:600;font-size:13px;line-height:1.5;white-space:normal;transition:background .15s,transform 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0 0;display:flex;flex-direction:column;z-index:10}.sidebar .brand{margin:0 12px 54px}.navcaption{font-size:9px;letter-spacing:1.25px;color:#8a96a9;font-weight:650;margin:0 12px 16px}.navitem{display:flex;align-items:center;gap:12px;width:100%;background:transparent;color:#6b778b;border:0;text-align:left;font-weight:550;padding:13px 14px;border-radius:8px;margin-bottom:6px;font-size:13px}.navitem>span{font-size:20px;width:21px;line-height:1}.navitem.selected{color:var(--blue);background:var(--soft)}.navitem:hover{background:#f4f7fc}.navitem small{margin-left:auto;font-size:10px;background:white;border:1px solid #e8edf4;padding:1px 5px;border-radius:5px}.sidebottom{margin-top:auto}.sync{font-size:10px;color:#819089;display:flex;align-items:center;gap:7px;padding:18px 12px}.sync i{height:6px;width:6px;background:#4cae89;border-radius:50%}.profile{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);padding:20px 8px 0}.avatar{display:grid;place-items:center;width:34px;height:34px;background:#eaf0fb;border-radius:50%;color:#5773a0;font-weight:600}.profile strong{display:block;font-size:12px}.profile small{display:block;color:var(--muted);font-size:10px}.iconbtn{margin-left:auto;background:none;border:0;font-size:21px;color:#7e8aa0;padding:4px}.mainwrap{margin-left:238px;width:calc(100% - 238px)}.topbar{height:77px;border-bottom:1px solid var(--line);background:#ffffffbf;display:flex;align-items:center;justify-content:space-between;padding:0 44px}.breadcrumb{font-size:12px;font-weight:550;color:#68788e}.language{border:1px solid var(--line);font-size:11px;padding:8px 10px;background:#fff}.mainwrap main{max-width:1300px;margin:auto;padding:38px 44px 45px;min-height:calc(100vh - 140px)}footer{padding:0 44px 22px;max-width:1300px;margin:auto;color:#9aa4b4;font-size:10px}footer span{padding:0 5px}.hero{border:1px solid #e1e9f8;border-radius:15px;background:linear-gradient(115deg,#f0f5ff,#f8fbff);padding:36px;display:flex;justify-content:space-between;gap:24px;overflow:hidden;position:relative}.hero h1{max-width:490px;margin-bottom:14px;font-size:34px}.hero p{color:#71819a;font-size:13px;max-width:470px;margin:0}.heromark{width:105px;height:105px;margin:15px 25px 0 0;flex-shrink:0;border:1px solid #bfd2fc;background:#fff9;border-radius:28px;display:grid;place-items:center;color:var(--blue);font-size:55px;transform:rotate(-10deg);position:relative;box-shadow:14px 16px 0 #dae6fc88}.heromark span{position:absolute;bottom:-9px;right:-20px;font-size:26px;width:42px;height:42px;display:grid;place-items:center;border-radius:13px;transform:rotate(10deg);color:#fff;background:var(--blue)}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:23px 0 30px}.stat{border:1px solid var(--line);border-radius:12px;background:#fff;padding:20px;display:flex;justify-content:space-between;align-items:flex-start;gap:8px}.stat div>span{display:block;color:var(--muted);font-size:11px;margin-bottom:7px}.stat strong{font-size:28px;letter-spacing:-.8px;line-height:1.2;display:block}.stat strong small{font-weight:400;font-size:14px;color:#98a5b8;padding-left:3px}.staticon{color:#7090c9;background:#f1f5fc;border-radius:9px;width:32px;height:32px;display:grid;place-items:center;font-size:19px}.sectionhead{display:flex;justify-content:space-between;align-items:center;gap:18px;margin:34px 0 18px}.sectionhead h2,.sectionhead h3{margin:0}.sectionhead .eyebrow{margin-bottom:5px}.sectionhead>.muted{font-size:11px}.topicbar{display:flex;gap:8px;flex-wrap:wrap}.topicpill{border:1px solid var(--line);border-radius:8px;background:#fff;font-size:12px;font-weight:600;color:#66758d;padding:10px 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16px;border-radius:9px;font-size:12px;color:#617da9}.notice.warning{background:#fff8ec;border-color:#f0dfbf;color:#a5792d}.notice p{margin:8px 0}.checklabel{display:flex;gap:8px;align-items:start;font-size:12px}.checklabel input{margin-top:4px}.resultbanner{padding:32px 36px;border:1px solid #dce7fa;border-radius:14px;background:linear-gradient(110deg,#f0f5ff,#fff);display:flex;align-items:center;justify-content:space-between;gap:20px}.resultbanner h1{font-size:27px;margin-bottom:10px}.resultbanner p{color:#7789a2;font-size:12px}.resultstatus{display:inline-block;border-radius:6px;padding:4px 9px;font-size:11px;font-weight:600}.resultstatus.pass{background:#e3f4ea;color:var(--green)}.resultstatus.fail{background:#fff0db;color:#ad7c32}.biggrade{font-size:65px;line-height:1;font-weight:650;color:var(--blue);letter-spacing:-3px;white-space:nowrap}.biggrade span{font-size:20px;color:#90a6cd;font-weight:400;letter-spacing:0;margin-left:10px}.resultsstats{grid-template-columns:repeat(3,1fr)}.resultactions{display:flex;justify-content:space-between;gap:12px}.reviewlist{display:grid;gap:22px}.reviewcard{border:1px solid var(--line);border-radius:12px;background:#fff;padding:27px}.reviewtop{display:flex;justify-content:space-between;gap:12px}.reviewcard h3{margin:20px 0;white-space:pre-wrap}.answerstatus{font-size:11px;font-weight:600}.answerstatus.good{color:var(--green)}.answerstatus.bad{color:var(--red)}.reviewoptions{display:grid;gap:8px}.reviewoption{padding:12px 14px;border:1px solid #e8edf4;border-radius:7px;display:flex;gap:12px;align-items:center;color:#8490a3;font-size:12px}.reviewoption b{font-size:11px;flex-shrink:0}.reviewoption small{margin-left:auto;font-size:10px;white-space:nowrap}.rightanswer{background:#eff9f3;border-color:#cae9d7;color:#23855b}.wronganswer{background:#fff3f3;border-color:#f0d2d5;color:#be5861}.explanation{border:1px solid #dce8fa;background:#f4f8ff;border-radius:9px;padding:18px;margin-top:22px;font-size:12px;color:#5b759f}.explanation strong{color:#3864a8}.explanation p{margin:8px 0;white-space:pre-wrap}.explanation small{color:#8a9bb5;font-size:10px}.importpanel{display:flex;align-items:center;gap:22px;background:#fff;border:1px dashed #b9cef2;border-radius:12px;padding:27px}.uploadicon{background:var(--soft);border-radius:12px;color:var(--blue);width:58px;height:58px;flex-shrink:0;display:grid;place-items:center;font-size:27px}.importpanel h2{font-size:18px;margin-bottom:7px}.importpanel p{font-size:12px;color:var(--muted);max-width:530px;margin-bottom:7px}.importpanel 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1fr;background:#fff}.loginvisual{background:#eef4ff;padding:48px 55px;position:relative;overflow:hidden;min-height:100vh;display:flex;flex-direction:column}.loginpitch{margin-top:90px;position:relative;z-index:1;max-width:490px}.loginpitch h1{font-size:47px;line-height:1.15;letter-spacing:-1.6px;margin:20px 0}.loginpitch>p{font-size:15px;color:#778aab;max-width:340px;line-height:1.8}.loginpitch ul{list-style:none;padding:10px 0;margin-bottom:20px}.loginpitch li{display:flex;align-items:center;gap:11px;color:#5f789f;font-size:12px;margin:18px 0}.loginpitch li span{border:1px solid #c8d9f5;border-radius:50%;width:19px;height:19px;text-align:center;color:var(--blue);font-size:11px;background:white}.abstract{height:140px;position:relative;margin:35px 0 0;max-width:450px}.abstractcard{position:relative;z-index:2;border:1px solid #d5e1f6;background:#ffffffb8;border-radius:15px;box-shadow:0 15px 30px #819dca10;padding:22px 26px;display:flex;align-items:center;gap:18px;transform:rotate(-5deg);width:300px;margin-left:35px}.abstractcard>span{height:46px;width:46px;display:grid;place-items:center;color:#fff;background:var(--blue);border-radius:13px;font-size:30px}.abstractcard b{font-size:14px}.abstractcard p{font-size:10px;letter-spacing:2px;color:#93a6c6;margin:3px 0 0}.abstractcard strong{font-size:27px;color:var(--blue);margin-left:auto}.orb{border-radius:50%;position:absolute;background:#e0eaff}.orb.one{width:200px;height:200px;left:90px;top:-45px}.orb.two{width:90px;height:90px;background:#cadcfb;left:300px;top:60px}.loginform{position:relative;display:flex;align-items:center;justify-content:center;padding:90px 50px}.loginlang{position:absolute;top:40px;right:40px}.loginform form{width:100%;max-width:345px}.tinylogo{background:var(--soft);border-radius:12px;width:45px;height:45px;display:grid;place-items:center;font-size:26px;color:var(--blue);margin-bottom:26px}.loginform h2{font-size:26px;letter-spacing:-.8px;margin-bottom:8px}.loginform form>p{color:var(--muted);font-size:12px;margin-bottom:30px}.loginform label{margin:18px 0;color:#65738a;font-size:12px}.loginform input{padding:13px;font-size:13px;background:#fcfdff}.loginform .full{margin-top:12px;justify-content:space-between}.loginfooter{position:absolute;bottom:33px;left:30px;right:30px;text-align:center;font-size:10px;color:#a0aabc}.loginform form .errorText{margin:15px 0;color:var(--red)}.loginform .notice{font-size:10px}.startfields{display:grid;gap:18px;margin-top:22px}.startfields label{font-size:12px;color:#65738a}.startfields select{width:100%}.custompenalty{display:grid;grid-template-columns:1fr 1fr;gap:15px}.startsummary{background:#f4f7fc;border-radius:9px;padding:13px 16px;font-size:12px;color:#7184a3;margin:18px 0 0}#toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,15px);opacity:0;pointer-events:none;z-index:100;background:#1b2d48;color:white;padding:13px 20px;border-radius:9px;box-shadow:0 5px 20px #17243d25;max-width:calc(100% - 40px);font-size:12px;transition:opacity .15s,transform .15s}#toast.visible{opacity:1;transform:translate(-50%,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}.loading{padding:40px;font-size:24px;color:var(--blue)}
@media(min-width:1450px){.testgrid{grid-template-columns:repeat(3,minmax(0,1fr))}.hero h1{max-width:600px}.hero{padding:42px}.heromark{margin-right:70px}}
@media(max-width:1100px){.sidebar{width:210px;padding:28px 13px 18px}.mainwrap{margin-left:210px;width:calc(100% - 210px)}.mainwrap main{padding:28px}.topbar{padding:0 28px}.hero{padding:27px}.hero h1{font-size:29px}.heromark{width:80px;height:80px;margin-right:15px;font-size:44px}.stats{gap:10px}.stat{padding:15px}.staticon{display:none}.topicintro{display:block}.topicintro small{display:block;margin-top:10px}.examgrid{grid-template-columns:minmax(0,1fr) 220px;gap:16px}.questionpanel{padding:22px}.questionaside{padding:18px}.importpanel{flex-wrap:wrap}.importactions{display:flex;width:100%;justify-content:flex-end}.scorefields{grid-template-columns:repeat(2,1fr)}.loginvisual{padding:35px}.loginpitch h1{font-size:39px}}
@media(max-width:780px){.sidebar{width:100%;height:auto;position:sticky;top:0;padding:12px 18px 0;border-right:0;border-bottom:1px solid var(--line);display:block}.sidebar .brand{font-size:20px;margin:0 0 11px}.brandmark{width:29px;height:29px;border-radius:8px;font-size:21px}.navcaption,.sidebottom .sync{display:none}.sidebar nav{display:flex;gap:4px;overflow:auto}.navitem{justify-content:center;gap:7px;font-size:11px;padding:11px 10px;margin:0;border-radius:6px 6px 0 0;white-space:nowrap;width:auto;flex:1}.navitem>span{font-size:17px;width:auto}.navitem small{display:none}.sidebottom{position:absolute;right:14px;top:9px}.profile{border:0;padding:0}.profile .avatar,.profile div{display:none}.profile .iconbtn{font-size:23px}.layout{display:block}.mainwrap{margin-left:0;width:100%}.topbar{height:55px;padding:0 22px}.mainwrap main{padding:24px 22px;min-height:calc(100vh - 220px)}.hero h1{font-size:29px;max-width:430px}.hero{padding:26px}.heromark{width:70px;height:70px;font-size:38px;border-radius:20px;margin:18px 12px 0 0}.heromark span{width:31px;height:31px;font-size:22px;border-radius:10px}.hero p{font-size:12px}.stats{gap:10px;margin-bottom:24px}.stat{padding:14px}.stat div>span{font-size:10px}.stat strong{font-size:25px}.sectionhead{margin-top:28px}.examgrid{grid-template-columns:1fr}.questionaside{order:2}.questionmap{grid-template-columns:repeat(10,1fr)}.questionaside>.btn{margin-top:5px}.rulebox{display:none}.maplegend{justify-content:flex-start;gap:20px}.examhead h1{font-size:23px}.questionpanel h2{font-size:20px}.loginpage{grid-template-columns:1fr}.loginvisual{min-height:0;padding:26px 30px 30px}.loginvisual .brand{font-size:21px}.loginpitch{margin-top:30px}.loginpitch h1{font-size:34px;max-width:450px;margin:12px 0}.loginpitch>p{max-width:490px;font-size:13px}.loginpitch ul,.abstract{display:none}.loginform{padding:55px 30px 90px}.loginlang{top:14px;right:24px}.loginform form{max-width:420px}.tinylogo{display:none}.loginform h2{font-size:24px}.loginfooter{bottom:25px}.loginform .notice{margin-top:15px}.resultbanner{padding:25px}.resultbanner h1{font-size:24px}.biggrade{font-size:52px}.reviewoption{flex-wrap:wrap}.reviewoption small{width:100%;margin-left:22px}.testcard{padding:21px}.importpanel{gap:14px}.uploadicon{width:45px;height:45px}.importpanel>div:nth-child(2){flex:1;min-width:190px}footer{padding:0 22px 22px}}
@media(max-width:480px){.mainwrap main{padding:20px 16px}.topbar{padding:0 16px}.hero{padding:24px}.hero h1{font-size:28px}.heromark{display:none}.stats{grid-template-columns:repeat(2,1fr);gap:10px}.stat{padding:16px}.staticon{display:grid;width:27px;height:27px;font-size:16px}.testgrid{grid-template-columns:1fr}.sectionhead h2{font-size:19px}.topicintro small{font-size:9px}.testcard h3{font-size:17px}.resume{padding:15px;gap:11px;flex-wrap:wrap}.resume .btn{font-size:11px;margin-left:32px}.resume>div:nth-child(2){flex:1;min-width:180px}.filter{padding:11px 12px;font-size:11px}.examhead{align-items:start}.examhead h1{font-size:20px}.examhead>.btn{font-size:10px;padding:9px}.questionpanel{padding:20px 16px}.questionpanel h2{font-size:18px}.questionactions{gap:9px;flex-wrap:wrap}.questionactions .text{width:100%;justify-content:flex-start}.questionactions .btn{font-size:11px}.option{padding:12px;gap:9px;font-size:12px}.questionmap{grid-template-columns:repeat(7,1fr)}.examprogress{font-size:9px;gap:10px}.resultbanner{gap:12px;align-items:flex-start;padding:24px;flex-wrap:wrap}.biggrade{font-size:50px;margin-top:10px}.resultsstats{grid-template-columns:repeat(3,minmax(0,1fr))}.resultsstats .staticon{display:none}.resultsstats .stat{padding:12px}.resultactions{flex-wrap:wrap}.resultactions>.btn{font-size:11px}.reviewcard{padding:20px 16px}.reviewcard h3{font-size:15px}.reviewtop .questionnumber{font-size:10px}.reviewtop .answerstatus{font-size:10px}.sectionhead select{font-size:10px;max-width:190px;padding:9px}.scorefields{grid-template-columns:1fr 1fr;gap:12px}.panel{padding:18px}.scoreform .sectionhead{flex-wrap:wrap;gap:3px}.importpanel{padding:20px}.importactions{display:grid;justify-content:stretch}.modal{padding:24px 20px}.modalbuttons{flex-direction:column-reverse}.navitem{font-size:10px;padding:10px 6px;gap:6px}.navitem>span{font-size:16px}.sidebar{padding-left:12px;padding-right:12px}.loginpitch .eyebrow{font-size:9px}.loginpitch h1{font-size:32px}.loginvisual{padding:24px}.loginform{padding-left:24px;padding-right:24px}.pageheading h1{font-size:29px}.topicpill{font-size:11px;padding:9px 12px}.cardbottom .btn{font-size:12px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

@media(max-width:780px){.sidebottom>.btn{font-size:9px;padding:5px 2px}.sidebottom{display:flex;align-items:center;gap:8px;top:10px}.sidebottom .profile{display:flex}.sidebottom .sync{display:none}}

.promptpanel .sectionhead{margin-top:0;flex-wrap:wrap}.promptactions{display:flex;gap:18px;align-items:center}.promptpanel textarea{font:12px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace;color:#526581;background:#f8faff;border:1px solid #dce5f2;border-radius:9px;width:100%;resize:vertical;padding:18px;min-height:210px}.promptpanel>p{font-size:12px}

.danger{background:#fff2f2;border-color:#f0c9cf;color:#bb3f50}.danger:hover{background:#ffe5e9}.managementbuttons{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.sectionhead>.danger{max-width:330px}.startfields{gap:13px}.modal .startfields label{line-height:1.4}

.difficultyfield{margin:0;padding:0;border:0;min-width:0}.difficultyfield legend{font-size:12px;font-weight:550;color:#65738a;margin-bottom:9px}.difficultychoices{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.difficultychoice{--tone:#64748b;--tint:#f1f5f9;min-width:0;border:1px solid color-mix(in srgb,var(--tone) 25%,white);background:var(--tint);color:var(--tone);border-radius:9px;padding:11px 7px;text-align:left;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;min-height:65px;transition:background .15s,box-shadow .15s}.difficultychoice.easy{--tone:#15704e;--tint:#ebf8f0}.difficultychoice.medium{--tone:#225ec9;--tint:#edf3ff}.difficultychoice.hard{--tone:#9b590c;--tint:#fff5e4}.difficultychoice.expert{--tone:#8241a8;--tint:#f6eefc}.difficultychoice.all{--tone:#4c5e7d;--tint:#f0f3f8;grid-column:1/-1;min-height:50px;flex-direction:row;justify-content:space-between;padding:12px 16px}.difficultychoice.chosen{background:var(--tone);border-color:var(--tone);color:#fff;box-shadow:0 3px 9px color-mix(in srgb,var(--tone) 18%,transparent)}.difficultychoice:hover{box-shadow:0 0 0 2px color-mix(in srgb,var(--tone) 25%,transparent)}.difficultytitle{font-size:11px;font-weight:700;display:flex;align-items:center;gap:6px;line-height:1.4}.difficultytitle>span{font-size:11px}.difficultychoice.all .difficultytitle>span{font-size:20px;line-height:1}.difficultychoice small{font-size:9px;font-weight:400;opacity:.9;line-height:1.3}.difficultyhint{display:block;min-height:14px;color:#8391a6;font-size:10px;margin-top:6px}@media(max-width:480px){.difficultychoices{grid-template-columns:repeat(2,minmax(0,1fr))}.difficultychoice{min-height:56px;flex-direction:row;justify-content:space-between;padding:10px 11px;gap:5px}.difficultychoice small{font-size:9px;max-width:53px;text-align:right}.difficultytitle{font-size:10px;gap:5px}.difficultychoice.all small{max-width:none}}