svg{width:18px;height:18px;flex-shrink:0}
:root{--bg:#f6f7f3;--surface:#fff;--ink:#192e2b;--muted:#63736d;--line:#dfe5df;--green:#174e48;--green2:#267565;--mint:#e8f1e9;--gold:#d6a451;--amber:#865918;--red:#a33e37;--blue:#426d91;--radius:16px;font-family:Inter,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:15px;line-height:1.55}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:4px}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4,p{margin:0}h1{font-size:clamp(28px,3vw,39px);letter-spacing:-1.3px;line-height:1.2;font-weight:650}h2{font-size:21px;letter-spacing:-.5px;font-weight:650}h3{font-size:17px;line-height:1.4;font-weight:650}p+p{margin-top:10px}small,.small{font-size:12px}.muted{color:var(--muted)}.eyebrow{font-size:10px;letter-spacing:1.7px;font-weight:750;text-transform:uppercase}.layout{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100vh}.sidebar{background:#fff;border-right:1px solid var(--line);padding:30px 18px;position:fixed;inset:0 auto 0 0;width:240px;display:flex;flex-direction:column;z-index:20}.wordmark{padding:0 15px 26px;font-size:23px;font-weight:750;letter-spacing:-.7px;line-height:1.2}.wordmark span{display:block;color:var(--muted);letter-spacing:2px;font-size:10px;margin-top:8px;font-weight:550}.sidebar nav{display:grid;gap:6px}.navlink{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:9px;font-size:13px;color:#60716a;font-weight:550}.navlink svg{width:18px;height:18px;flex:none}.navlink:hover{background:var(--bg);text-decoration:none}.navlink.active{background:var(--mint);color:var(--green)}.nav-caption{padding:24px 14px 9px;color:#94a098;font-size:9px;letter-spacing:1.5px;font-weight:700}.sidebar-bottom{margin-top:auto;padding:22px 12px 0}.sidebar-note{padding:15px;background:#f4f6f1;border-radius:12px;font-size:12px}.sidebar-note h4{font-size:12px;margin-bottom:6px}.userline{display:flex;align-items:center;gap:9px;margin-top:20px}.avatar{width:34px;height:34px;border-radius:50%;background:#e7e6db;display:grid;place-items:center;font-weight:650;color:var(--green)}.userline small{display:block;color:var(--muted);font-size:10px}.content{grid-column:2;min-width:0}.topbar{height:76px;padding:0 42px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.8);gap:10px}.breadcrumb{color:var(--muted);font-size:12px}.top-right{display:flex;align-items:center;gap:18px;font-size:12px}.pill{display:inline-flex;align-items:center;gap:6px;background:var(--mint);color:var(--green);padding:5px 10px;border-radius:40px;font-size:10px;font-weight:650;white-space:normal}.pill.amber{background:#faf0da;color:var(--amber)}.pill.red{background:#f9e8e5;color:var(--red)}.pill.blue{background:#eaf0f7;color:var(--blue)}.main{max-width:1450px;margin:auto;padding:34px 42px 48px}.pagehead{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:26px}.pagehead p{color:var(--muted);font-size:13px;margin-top:10px}.pagehead .eyebrow{margin-bottom:8px;color:#89968d}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 17px;border-radius:8px;border:1px solid var(--green);background:var(--green);color:white;font-size:12px;font-weight:650;min-height:41px;line-height:1.4;text-decoration:none}.btn:hover{background:#226157;text-decoration:none}.btn.secondary{border-color:var(--line);background:white;color:var(--green)}.btn.secondary:hover{background:var(--mint)}.btn.ghost{background:transparent;color:var(--green);border-color:transparent;padding:7px 3px;min-height:32px}.btn.danger{background:var(--red);border-color:var(--red)}.btn.small{font-size:11px;min-height:34px;padding:7px 12px}.btn svg{width:15px;height:15px}.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.hero{border-radius:var(--radius);padding:31px 32px;background:var(--green);color:white;display:grid;grid-template-columns:1fr 230px;min-height:217px;position:relative;overflow:hidden}.hero .eyebrow{color:#a1c7b8}.hero h2{font-size:28px;letter-spacing:-.8px;margin:10px 0}.hero p{font-size:12px;color:#d0e0d6;max-width:440px;line-height:1.8}.hero .btn{background:#eff4e6;color:var(--green);border-color:#eff4e6;margin-top:21px}.hero .btn.secondary{background:transparent;border-color:#6e9689;color:white}.orbit{position:relative;display:grid;place-items:center;min-height:160px}.orbit-ring{border:1px solid #567e6e;border-radius:50%;width:176px;height:176px;position:absolute}.orbit-ring:nth-child(2){width:128px;height:128px;border-style:dashed}.orbit-core{width:80px;height:80px;border-radius:50%;display:grid;place-items:center;background:#285e53;color:#cce1b9;z-index:1}.orbit-core svg{width:35px;height:35px}.orbit-label{position:absolute;bottom:0;background:#3b6c58;border:1px solid #648a71;border-radius:20px;padding:6px 12px;font-size:10px;color:#e1ead3}.grid{display:grid;gap:20px}.grid.two{grid-template-columns:1fr 1fr}.grid.three{grid-template-columns:repeat(3,1fr)}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:23px;margin-top:25px}.card{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:23px;min-width:0}.cardhead{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:21px}.cardhead h2{font-size:17px}.cardhead a{font-size:11px}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:20px 0 27px}.stat{background:white;padding:18px 19px;border:1px solid var(--line);border-radius:12px}.stat .label{font-size:10px;color:var(--muted);display:flex;align-items:center;gap:7px}.stat strong{font-size:25px;display:block;margin:5px 0;font-weight:650;letter-spacing:-.6px}.stat small{font-size:10px;color:var(--muted)}.row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:15px 0;border-top:1px solid #edf0eb}.row:first-child{border-top:0;padding-top:0}.row:last-child{padding-bottom:0}.row p{font-size:12px}.row .muted{font-size:11px}.subject-icon{display:grid;place-items:center;flex:none;width:36px;height:36px;border-radius:10px;background:var(--mint);color:var(--green)}.subject-icon.chemistry{background:#f7efd9;color:#9d7836}.subject-icon.physics{background:#e9eff9;color:#5b77a9}.subject-icon svg{width:18px;height:18px}.row-main{flex:1;min-width:0}.coverage{height:5px;background:#edf1eb;border-radius:4px;margin:9px 0;overflow:hidden}.coverage span{display:block;height:100%;background:#5a8f71}.empty{padding:26px 12px;text-align:center;color:var(--muted);font-size:12px}.empty svg{width:32px;height:32px;margin-bottom:12px;color:#90a494}.empty h3{color:var(--ink);margin-bottom:7px;font-size:15px}.callout{background:#f1f4ec;border-radius:10px;padding:14px 16px;font-size:11px;color:#536850;margin:16px 0}.callout.amber{background:#fbf3e3;color:#805e2c}.callout.red{background:#f9e9e6;color:var(--red)}.section-space{margin-top:23px}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.section-title h2{font-size:18px}.practice-tile{padding:20px;display:flex;flex-direction:column;align-items:flex-start;gap:11px}.practice-tile p{font-size:11px;color:var(--muted)}.practice-tile .btn{margin-top:auto}.footer-note{font-size:10px;color:#86928a;margin-top:30px;border-top:1px solid var(--line);padding-top:17px;display:flex;justify-content:space-between;gap:14px}.step{display:flex;gap:12px;font-size:12px;padding:12px 0}.stepnum{width:24px;height:24px;flex:none;border-radius:50%;display:grid;place-items:center;background:var(--mint);font-size:10px;color:var(--green)}.step small{display:block;color:var(--muted);font-size:10px;margin-top:2px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}label{display:block;font-size:12px;font-weight:600;margin-bottom:6px}input,select,textarea{width:100%;border:1px solid #cfd8d0;border-radius:7px;background:white;padding:10px 12px;color:var(--ink);font-size:13px;min-height:42px}textarea{min-height:110px;resize:vertical}input[type=checkbox]{width:16px;min-height:16px}label.check{display:flex;align-items:center;gap:8px}.field{margin-bottom:17px}.field small{display:block;color:var(--muted);font-weight:400;margin-top:5px}.wide{grid-column:1/-1}.form-error{font-size:12px;color:var(--red);margin:14px 0;white-space:pre-wrap}details{border-top:1px solid var(--line);padding:15px 0}summary{cursor:pointer;font-size:13px;font-weight:600;display:list-item}details p,details li{font-size:12px;color:var(--muted)}details ul{padding-left:20px}details .pill{margin-left:10px}table{width:100%;border-collapse:collapse;font-size:12px}th,td{text-align:left;padding:13px 9px;border-bottom:1px solid var(--line);vertical-align:top}th{color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.5px}.table-wrap{overflow:auto}.tabs{display:flex;gap:7px;margin:18px 0 23px;flex-wrap:wrap}.tabs button{border:1px solid var(--line);background:white;color:var(--muted);border-radius:7px;padding:8px 14px;font-size:12px}.tabs button.active{background:var(--green);border-color:var(--green);color:white}.auth{min-height:100vh;display:grid;grid-template-columns:1fr 1fr}.auth-story{padding:9vh 7vw;background:var(--green);color:#fff;display:flex;flex-direction:column;justify-content:center}.auth-story .wordmark{padding:0;margin-bottom:65px}.auth-story .wordmark span{color:#a3c1b5}.auth-story h1{font-size:clamp(38px,4vw,59px);font-weight:550;max-width:470px}.auth-story>p{color:#bdd4c8;max-width:400px;font-size:14px;margin:26px 0}.auth-form{max-width:470px;align-self:center;justify-self:center;padding:40px;width:100%}.auth-form h2{font-size:25px;margin-bottom:9px}.demo-roles{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}.demo-roles .btn{font-size:11px}.player-layout{display:grid;grid-template-columns:minmax(0,1fr) 244px;gap:22px}.question-card{padding:28px}.question-stem{font-size:19px;line-height:1.7;margin:24px 0}.options{display:grid;gap:12px;margin:23px 0}.option{display:flex;gap:13px;align-items:center;text-align:left;padding:15px 17px;background:white;border:1px solid var(--line);border-radius:9px;font-size:14px;color:var(--ink)}.option:hover{background:#f6f8f3}.option.selected{border:2px solid var(--green);padding:14px 16px;background:#edf5ec}.option-letter{width:26px;height:26px;border-radius:50%;border:1px solid #d4dcd4;display:grid;place-items:center;font-size:11px;flex:none}.selected .option-letter{background:var(--green);color:white;border-color:var(--green)}.question-nav{display:flex;justify-content:space-between;gap:10px;border-top:1px solid var(--line);padding-top:20px;margin-top:24px}.palette{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.palette button{border:1px solid #d3dcd2;border-radius:7px;min-height:36px;background:white;font-size:12px;color:var(--ink)}.palette button.answered{background:var(--green);color:white;border-color:var(--green)}.palette button.flagged{outline:2px solid #c59235;outline-offset:2px}.palette button.current{box-shadow:0 0 0 2px #72a9a2}.timer{font-size:23px;font-variant-numeric:tabular-nums}.legend{font-size:10px;color:var(--muted);margin:18px 0;line-height:1.9}.score{font-size:52px;letter-spacing:-2px;font-weight:650}.score small{font-size:19px;color:var(--muted);font-weight:400;letter-spacing:0}.review-item{margin:18px 0;padding:22px;border-radius:12px;background:white;border:1px solid var(--line)}.review-item .question-stem{font-size:16px;margin:15px 0}.review-option{font-size:12px;padding:9px;border-radius:6px;margin:5px 0;border:1px solid #e6eae4}.review-option.correct{background:#eaf3e7;border-color:#b6d0b0}.review-option.wrong{background:#faeae7;border-color:#e8b3ac}.solution{background:#f3f6ef;border-radius:8px;padding:14px;font-size:12px;margin:13px 0}.event{padding:18px 0;border-top:1px solid var(--line)}.event:first-child{border:0}.event h3{font-size:15px;margin:8px 0}.event p{font-size:12px;color:var(--muted)}.source-link{font-size:11px;display:inline-flex;align-items:center;gap:4px;margin-top:10px}.list{display:grid;gap:15px}.notice-date{font-size:11px;color:var(--muted)}.icon-btn{background:none;border:0;color:var(--muted);padding:7px;display:grid;place-items:center}.icon-btn svg{width:17px;height:17px}#toast{position:fixed;bottom:25px;right:25px;background:#173f36;color:white;border-radius:10px;padding:13px 20px;box-shadow:0 6px 25px #0002;z-index:100;font-size:12px;display:none;max-width:min(450px,90vw)}#toast.show{display:block}.initial{padding:60px;text-align:center}.skip{position:fixed;top:-50px;left:10px;z-index:100;background:white;padding:10px}.skip:focus{top:10px}.spinner{color:var(--muted);font-size:13px;padding:45px;text-align:center}.error-page{border-left:3px solid var(--red);padding:20px;background:white}.mobile-brand{display:none}.flow-line{display:flex;gap:9px;align-items:center;font-size:10px;color:#809386;margin-top:22px;flex-wrap:wrap}.flow-line span{border:1px solid #d8e2d3;padding:5px 9px;border-radius:20px}.code{font-family:Consolas,monospace;font-size:11px;overflow-wrap:anywhere}.print-page{max-width:820px;margin:auto;background:white;padding:40px}.print-page header{border-bottom:2px solid #174e48;padding-bottom:20px;margin-bottom:25px}.print-page header p{font-size:11px}.print-question{break-inside:avoid;padding:20px 0;border-bottom:1px solid #ddd}.print-question h3{margin:10px 0}.print-question p{font-size:13px}.answer-sheet{break-before:page;padding-top:30px}.bubble-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:30px 0}.print-page footer{font-size:10px;margin-top:40px}.text-link{border:0;background:none;color:var(--green);text-decoration:underline;padding:0;font-size:12px}.split-label{display:flex;justify-content:space-between;gap:10px}.metrics{display:flex;gap:20px;flex-wrap:wrap}.metrics>div{border-right:1px solid var(--line);padding-right:20px}.metrics>div:last-child{border:0}.metrics strong{font-size:24px;display:block}.metrics small{color:var(--muted);font-size:10px}.hint-box{font-size:12px;border-left:3px solid #a8c49b;padding:10px 15px;background:#f5f7f1}.review-actions{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;margin-top:16px}.note-label{font-size:10px;color:var(--muted);margin-top:12px}.stack{display:grid;gap:18px}.draft-example{font-size:11px;white-space:pre-wrap}.auth-top-actions{margin-bottom:24px}.profile-summary{font-size:12px;line-height:2}.profile-summary b{display:inline-block;min-width:130px}.narrow{max-width:760px}.unavailable{opacity:.8}.divider{height:1px;background:var(--line);margin:25px 0}
@media(min-width:1600px){.main{padding-top:45px}.hero{min-height:250px}.dashboard-grid{grid-template-columns:minmax(0,1fr) 340px}.hero h2{font-size:33px}}
@media(max-width:1200px){.sidebar{width:210px;padding-left:12px;padding-right:12px}.layout{grid-template-columns:210px minmax(0,1fr)}.main{padding:28px}.topbar{padding:0 28px}.dashboard-grid{grid-template-columns:minmax(0,1fr) 270px;gap:18px}.hero{padding:25px;grid-template-columns:1fr 150px}.orbit-ring{width:140px;height:140px}.orbit-ring:nth-child(2){width:105px;height:105px}.hero h2{font-size:25px}.stat{padding:14px}.stat strong{font-size:22px}.grid.three{gap:12px}.practice-tile{padding:17px}}
@media(max-width:1000px){.dashboard-grid{grid-template-columns:1fr}.dashboard-aside{display:grid;grid-template-columns:1fr 1fr;gap:18px}.dashboard-aside .card{margin:0}.player-layout{grid-template-columns:1fr 205px}.hero{grid-template-columns:1fr 200px}.grid.three{grid-template-columns:1fr 1fr}.auth-story{padding:45px}.auth-form{padding:30px}}
@media(max-width:760px){.layout{display:block}.sidebar{position:static;width:auto;border:0;padding:14px 18px;background:white}.wordmark{font-size:20px;padding:0 0 16px}.wordmark span{font-size:8px;display:inline;margin-left:10px}.sidebar nav{display:flex;overflow-x:auto;padding-bottom:6px;gap:5px}.navlink{white-space:nowrap;padding:9px 11px;font-size:11px}.navlink svg{width:15px;height:15px}.nav-caption,.sidebar-bottom{display:none}.content{display:block}.topbar{height:50px;padding:0 18px}.main{padding:24px 18px}.pagehead{align-items:flex-start;margin-bottom:20px}.pagehead h1{font-size:27px}.pagehead p{font-size:12px}.pagehead>.btn{font-size:10px;padding:8px 10px;min-height:36px}.top-right{gap:10px}.top-right>.small{display:none}.hero{padding:24px;grid-template-columns:1fr}.orbit{display:none}.hero h2{font-size:24px}.hero p{font-size:12px}.stat-grid{gap:9px}.stat{padding:12px}.stat strong{font-size:22px}.stat .label{font-size:9px}.stat small{font-size:9px}.grid.two,.dashboard-aside,.form-grid{grid-template-columns:1fr}.grid.three{grid-template-columns:1fr}.card{padding:20px}.player-layout{display:flex;flex-direction:column}.player-sidebar{order:-1}.player-sidebar .card{padding:14px}.palette{grid-template-columns:repeat(8,1fr);gap:6px}.palette button{min-height:32px}.player-sidebar .legend{display:none}.player-sidebar .cardhead{margin-bottom:10px}.question-card{padding:20px}.question-stem{font-size:17px}.question-nav{flex-wrap:wrap}.auth{display:block}.auth-story{padding:30px 24px}.auth-story .wordmark{margin-bottom:25px}.auth-story h1{font-size:36px}.auth-story>p{margin:18px 0 0;font-size:12px}.auth-story .flow-line{display:none}.auth-form{padding:30px 24px;max-width:500px}.footer-note{display:block;line-height:1.8}.review-actions{grid-template-columns:1fr}.score{font-size:45px}.pagehead .eyebrow{font-size:9px}.metrics{gap:14px}.bubble-grid{grid-template-columns:1fr}.question-stem,.option,.source-link{overflow-wrap:anywhere}.topbar .pill{font-size:9px}.row{gap:10px}.row .btn{font-size:10px}.tabs button{font-size:11px;padding:7px 10px}}
@media print{body{background:white;color:black}.print-page{padding:0;max-width:none}.print-question{break-inside:avoid}a{color:black}.answer-sheet{break-before:page}@page{size:A4;margin:18mm}.print-page footer{position:static}.solution{background:#f1f1f1!important}}
@media(max-width:360px){.stat-grid{grid-template-columns:1fr}.stat{padding:14px 17px}.stat strong{margin:4px 0}.topbar{gap:6px}.pagehead{flex-wrap:wrap}.row{flex-wrap:wrap}}
@media print{html{background:white}}
@media print{:root{background:white}}

/* Shared exam navigation remains accessible above the student workspace. */
body>.mp-nav+.layout{min-height:calc(100vh - 80px)}body:has(>.mp-nav) .sidebar{top:82px}.mp-nav .mp-brand{font-size:24px}@media(max-width:850px){body:has(>.mp-nav) .sidebar{top:0}.mp-nav{position:relative}.sidebar{position:static!important;width:auto!important}.layout{display:block!important}.content{display:block!important}.sidebar-bottom,.nav-caption{display:none}.sidebar nav{display:flex;overflow-x:auto}.navlink{white-space:nowrap}.main{padding:24px 18px}}
