@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{font-family:'DM Sans',sans-serif;color:#182e29;background:#f5f7f6;font-size:16px;--green:#113e36;--lime:#d4f4a3;--muted:#697b75;--line:#e0e7e3}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,select{touch-action:manipulation}button,a{outline-offset:5px}button{cursor:pointer}a{color:inherit}button:disabled{opacity:.45;cursor:default}.sidebar{position:fixed;inset:0 auto 0 0;width:246px;background:white;border-right:1px solid var(--line);padding:36px 24px;display:flex;flex-direction:column}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;font:800 28px 'Manrope',sans-serif;letter-spacing:-1px}.logo{background:var(--green);color:var(--lime);width:46px;height:46px;text-align:center;border-radius:13px;font-size:36px;line-height:43px}.brand-sub{display:block;font:600 10px 'DM Sans',sans-serif;letter-spacing:2px;margin-top:2px}.nav-label{font-size:11px;letter-spacing:1.6px;color:var(--muted);margin:58px 0 15px}nav{display:grid;gap:8px}nav a{display:flex;align-items:center;gap:13px;text-decoration:none;padding:13px 16px;border-radius:9px;color:#687970;font-size:15px}nav a.active{background:#eaf2ed;color:var(--green);font-weight:700}nav svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7}.sidebar-bottom{margin-top:auto;display:flex;gap:11px;font-size:14px;align-items:center}.badge{border:1px solid var(--line);border-radius:50%;padding:10px;font-size:12px}.sidebar-bottom small{display:block;color:var(--muted);font-size:12px;margin-top:4px}.shell{margin-left:246px}header{height:84px;border-bottom:1px solid var(--line);padding:0 44px;display:flex;justify-content:space-between;align-items:center;background:white;font-size:14px;color:var(--muted)}.language{color:var(--green);font-size:12px;border:1px solid var(--line);padding:8px 12px;border-radius:7px}.language span{color:#aab7b0;margin:0 5px}main{max-width:1260px;margin:auto;padding:40px 44px}h1,h2,h3{font-family:'Manrope',sans-serif}h1{font-size:32px;letter-spacing:-1.2px;margin:6px 0 8px;font-weight:800}h2{font-size:21px;letter-spacing:-.6px;margin:0 0 12px}h3{font-size:17px;margin:0 0 8px}p{line-height:1.65}.muted{color:var(--muted)}.eyebrow{font-size:11px;letter-spacing:1.8px;text-transform:uppercase;font-weight:700}.page-top{display:flex;justify-content:space-between;gap:18px;align-items:center;margin-bottom:28px}.page-top p{margin:0}.tag{font-size:12px;border:1px solid var(--line);border-radius:20px;padding:8px 12px;white-space:nowrap;background:white}.hero{background:var(--green);color:white;border-radius:18px;display:grid;grid-template-columns:1fr 175px;gap:24px;padding:32px;margin-bottom:24px}.hero h2{font-size:28px;line-height:1.3;max-width:480px;margin:10px 0}.hero p{color:#c5d6cb;max-width:500px;margin:10px 0 22px;font-size:15px}.hero .eyebrow{color:#c8ed91}.hero-art{border-left:1px solid #527268;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center}.hero-art strong{font:700 64px 'Manrope';letter-spacing:-4px;color:var(--lime)}.hero-art span{font-size:12px;color:#c5d6cb;max-width:120px}.btn{border:0;border-radius:8px;background:var(--green);color:white;padding:12px 19px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-size:14px;gap:8px;min-height:44px}.btn:hover{filter:brightness(1.12)}.btn.lime{background:var(--lime);color:var(--green)}.btn.secondary{background:white;color:var(--green);border:1px solid var(--line)}.btn.ghost{background:transparent;color:var(--green);border:1px solid var(--line)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}.stat,.card{border:1px solid var(--line);border-radius:13px;background:white;padding:23px}.stat span{font-size:13px;color:var(--muted)}.stat strong{display:block;font:800 30px 'Manrope';margin:8px 0 5px}.stat small{font-size:12px;color:var(--muted)}.two-col{display:grid;grid-template-columns:1.65fr 1fr;gap:24px}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.section-head h2{margin:0}.section-head a{font-size:13px;text-decoration:none}.topic-row{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}.topic-row:last-child{border:0}.topic-number{background:#edf3ef;border-radius:9px;padding:12px;font-size:13px;min-width:43px;text-align:center}.topic-copy{flex:1}.topic-copy p{margin:3px 0;font-size:12px;color:var(--muted)}.topic-copy h3{font-size:14px;margin:0}.mini-progress{height:4px;background:#edf1ee;border-radius:9px;margin-top:9px;overflow:hidden}.mini-progress span{display:block;height:100%;background:#529778}.daily{background:#edf2f8}.daily p{font-size:15px}.daily .eyebrow{color:#63718b}.daily strong{font:700 25px 'Manrope';display:block;margin:30px 0 10px}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.topic-card{display:flex;flex-direction:column}.topic-card p{font-size:14px;color:var(--muted);flex:1}.topic-card .btn{align-self:flex-start}.pill{display:inline-block;background:#edf3ef;padding:5px 9px;border-radius:5px;font-size:12px;color:#315e48}.question{max-width:850px;margin:auto}.question h2{font-size:24px;line-height:1.5}.options{display:grid;gap:12px;margin:25px 0}.option{border:1px solid #cfdad4;background:white;border-radius:9px;padding:16px;text-align:left;display:flex;align-items:center;gap:15px;line-height:1.5;color:#233e33}.option b{font-size:12px;background:#f1f4f2;padding:7px 10px;border-radius:5px}.option.chosen{border-color:var(--green);background:#edf5ef}.option.correct{border-color:#458862;background:#e6f4ea}.option.wrong{border-color:#b24a43;background:#fcedeb}.feedback{padding:20px;border-radius:10px;background:#e9f3ee;margin-bottom:20px;line-height:1.6}.feedback.wrong{background:#fff1eb}.feedback a{font-size:13px}.actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:space-between;align-items:center}.progress{height:6px;border-radius:10px;background:#e5ece7;margin:18px 0 26px;overflow:hidden}.progress span{display:block;background:#559d70;height:100%}.timer{font-variant-numeric:tabular-nums;font-weight:700}.flash{min-height:260px;text-align:center;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:22px;background:#f0f5ee}.flash h2{font-size:30px}.flash p{max-width:580px;margin:0}.result-number{font:800 72px 'Manrope';color:var(--green)}.review{margin:16px 0;padding:20px;border:1px solid var(--line);border-radius:9px}.review p{margin:7px 0;font-size:14px}.list{padding-left:22px;line-height:1.8}.source-link{display:block;padding:16px 0;border-bottom:1px solid var(--line);text-decoration:none}.source-link small{display:block;color:var(--muted);margin-top:5px}.check{display:flex;gap:12px;align-items:flex-start;margin:16px 0;line-height:1.6}.check input{width:20px;height:20px;accent-color:var(--green);margin-top:4px}.notice{padding:16px 20px;border-radius:10px;background:#edf2f8;font-size:14px;line-height:1.6;margin:22px 0}select{padding:10px;border:1px solid var(--line);border-radius:7px;background:white;max-width:100%}footer{max-width:1260px;margin:auto;padding:12px 44px 30px;color:var(--muted);font-size:12px;line-height:1.7}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #7aaa59}.empty{padding:35px;text-align:center}details summary{cursor:pointer;font-weight:600}details p{font-size:14px}.exam-map{display:flex;gap:5px;flex-wrap:wrap;margin:24px 0}.exam-map button{border:1px solid var(--line);background:white;padding:8px;min-width:36px;border-radius:5px}.exam-map button.done{background:#ddefda}.exam-map button.current{outline:2px solid var(--green)}
@media(min-width:1450px){main{padding-top:48px}}@media(max-width:1100px){.sidebar{width:212px;padding:28px 18px}.shell{margin-left:212px}main{padding:30px 26px}header{padding:0 26px}.two-col{grid-template-columns:1fr}.hero{grid-template-columns:1fr 130px}.stats{gap:10px}.stat{padding:17px}}@media(max-width:740px){.sidebar{position:static;width:auto;padding:18px;border-right:0;border-bottom:1px solid var(--line)}.brand{font-size:23px}.logo{width:39px;height:39px;line-height:37px;font-size:30px}.nav-label,.sidebar-bottom{display:none}nav{display:flex;overflow-x:auto;margin-top:20px;gap:4px}nav a{white-space:nowrap;padding:10px 12px;font-size:13px}nav svg{display:none}.shell{margin:0}header{height:56px;padding:0 20px;font-size:12px}.language{font-size:11px}main{padding:26px 20px}.page-top{align-items:flex-start}.page-top .tag{display:none}h1{font-size:27px}.hero{grid-template-columns:1fr;padding:25px}.hero-art{display:none}.hero h2{font-size:25px}.stats{gap:8px}.stat{padding:13px}.stat span{font-size:11px}.stat strong{font-size:25px}.stat small{font-size:10px}.grid{grid-template-columns:1fr}.card{padding:20px}.question h2{font-size:21px}.option{padding:13px}.topic-row{gap:9px}.topic-row .btn{padding:8px 10px;font-size:12px}footer{padding:12px 20px 30px}.page-top p{font-size:14px}}
.field{display:grid;gap:9px;font-size:14px;font-weight:600;margin:0 0 22px}.field input,.field select{width:100%;padding:12px;border:1px solid #cbd8d0;border-radius:8px;background:#fff;color:#183d30;min-height:46px}.small{font-size:13px;line-height:1.7}.resume{display:flex;justify-content:space-between;align-items:center;gap:15px;background:#e7f1e8;border:1px solid #bdd4bd;padding:18px 22px;border-radius:12px;margin-bottom:20px}.resume small{display:block;margin-top:5px}.session-top{display:flex;justify-content:space-between;gap:20px;align-items:center}.clock-box{text-align:right}.clock-box strong{display:block;font-size:24px;margin-top:5px}.text-btn{border:0;background:none;color:var(--green);font-size:14px;padding:9px;cursor:pointer}.source-detail{border-top:1px solid #cfddd2;padding-top:12px;font-size:13px}.source-detail span{display:block;color:var(--muted);margin-top:6px}.feedback p{margin:10px 0}.feedback details{font-size:14px}.session-controls{position:sticky;bottom:0;background:#f5f7f6f5;backdrop-filter:blur(12px);padding:16px 0 12px;z-index:3;display:grid;gap:13px}.personal-note{background:#fff7dd;padding:16px;border-radius:8px;font-size:14px}.result-dot{display:inline-flex;width:24px;height:24px;align-items:center;justify-content:center;border-radius:50%;margin-right:7px}.good{background:#dcedd9;color:#1f6034}.bad{background:#f9dfd8;color:#92382d}.document{text-decoration:none;display:flex;align-items:center;gap:16px;overflow-wrap:anywhere}.document:hover{border-color:#609975}.document h3{font-size:14px;line-height:1.5}.doc-icon{font-size:11px;background:#eaf1eb;color:#285940;padding:14px 7px;border-radius:7px;flex:none}.formula{background:#edf4ee;padding:14px;border-radius:7px;font-weight:600;font-size:14px}.calc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.calc-grid button{align-self:end;grid-column:1/-1;justify-self:start}.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}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#173d33;color:#fff;padding:16px 22px;border-radius:12px;box-shadow:0 8px 30px #0002;z-index:50;max-width:90vw;width:max-content;font-size:14px}dialog{border:1px solid var(--line);border-radius:16px;padding:30px;max-width:520px;width:calc(100% - 40px);color:var(--green)}dialog::backdrop{background:#071b1466;backdrop-filter:blur(3px)}dialog .actions{justify-content:flex-start}hr{border:0;border-top:1px solid var(--line);margin:28px 0}.option:disabled{opacity:1;cursor:default}.topic-copy{min-width:0}.stat strong span{font-size:15px;font-weight:400}.card h2{line-height:1.5}@media(max-width:740px){.session-top h1{font-size:24px}.clock-box strong{font-size:20px}.section-head{gap:12px;flex-wrap:wrap}.calc-grid{grid-template-columns:1fr}.calc-grid .field{margin-bottom:5px}.resume{align-items:flex-start;padding:15px}.session-controls{padding-bottom:calc(12px + env(safe-area-inset-bottom))}.question .card{padding:18px}.hero .btn{width:100%}.source-detail{overflow-wrap:anywhere}}
[hidden]{display:none!important}body:not(.signed-in)>.sidebar,body:not(.signed-in)>.shell{display:none}.auth-panel{max-width:620px;margin:0 auto;padding:48px 22px}.auth-brand{font:800 36px Manrope,sans-serif;color:var(--green);margin:20px 0 30px}.auth-brand small{display:block;font-size:11px;letter-spacing:2px}.auth-panel h1{font-size:30px}.auth-panel .actions{flex-wrap:wrap}.auth-panel input{width:100%}.account-strip{display:flex;gap:14px;align-items:center;flex-wrap:wrap;padding:18px 0;font-size:13px;border-bottom:1px solid var(--line);margin-bottom:24px}.account-strip #sync-status{margin-right:auto;color:var(--muted)}.readiness{margin:24px 0}.readiness .stats{margin-top:20px}.readiness .stat strong{font-size:30px}#students-panel{margin:28px 0}#students-list strong,#account-email{overflow-wrap:anywhere}@media(max-width:600px){.readiness .stat strong{font-size:25px}.auth-panel{padding-top:20px}}