@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(assets/fonts/manrope-0.ttf) format('truetype');
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(assets/fonts/manrope-1.ttf) format('truetype');
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(assets/fonts/manrope-2.ttf) format('truetype');
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(assets/fonts/manrope-3.ttf) format('truetype');
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(assets/fonts/manrope-4.ttf) format('truetype');
}

:root{--blue:#2458ec;--navy:#122447;--ink:#18243c;--muted:#65728a;--line:#e4e9f2;--bg:#f4f7fc;--mint:#ddf8ec;--orange:#ffad62;--shadow:0 16px 50px #233c6210;--radius:24px;font-family:Manrope,Arial,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.6}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}a{color:inherit}button,a.btn{text-decoration:none;cursor:pointer}button{color:inherit}button:disabled{cursor:default;opacity:.6}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #fc913e;outline-offset:4px}h1,h2,h3,h4,p{margin:0}h1,h2,h3{line-height:1.15;letter-spacing:-.045em}h1{font-size:clamp(2.5rem,4.5vw,4.5rem);font-weight:800}h2{font-size:clamp(1.65rem,2.6vw,2.5rem)}h3{font-size:1.25rem}p+p{margin-top:12px}small,.small{font-size:.85rem}.muted{color:var(--muted)}.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:.75rem;font-weight:800}.skip{position:absolute;left:20px;top:-80px;background:white;padding:12px;z-index:100}.skip:focus{top:10px}.shell{display:grid;grid-template-columns:238px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;padding:32px 22px 22px;border-right:1px solid var(--line);background:#fff;display:flex;flex-direction:column;z-index:20}.brand{display:flex;gap:11px;align-items:center;text-decoration:none;line-height:1.25;font-size:15px;font-weight:800}.brandmark{display:grid;place-items:center;background:var(--blue);color:white;width:43px;height:43px;border-radius:13px;font-size:18px;flex:none}.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.13em;margin-top:4px;font-weight:600}.nav-label{margin:42px 14px 10px;color:#7d8799;font-size:11px;letter-spacing:.15em;font-weight:800}.nav{display:flex;flex-direction:column;gap:5px}.nav a{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;font-size:14px;text-decoration:none;font-weight:600;color:#5d6980}.nav a:hover{background:var(--bg)}.nav a.active{background:#eaf0ff;color:var(--blue)}.ico{width:20px;height:20px;flex:none;stroke:currentColor;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round}.side-note{margin-top:auto;background:#f4f7fc;border:1px solid var(--line);border-radius:17px;padding:18px 15px;font-size:12px;color:var(--muted)}.side-note strong{display:block;color:var(--ink);font-size:14px;margin-bottom:6px}.side-author{margin-top:16px;padding:12px 0 0;border-top:1px solid var(--line);font-size:12px;display:flex;align-items:center;gap:10px}.avatar{display:grid;place-items:center;background:#edf0ff;border-radius:50%;width:36px;height:36px;color:var(--blue);font-weight:700;flex:none}.workspace{min-width:0}.topbar{height:84px;display:flex;align-items:center;justify-content:space-between;padding:0 42px;border-bottom:1px solid var(--line);background:#ffffffcf;gap:16px}.breadcrumb{font-size:13px;color:var(--muted)}.breadcrumb span{color:var(--ink);font-weight:600}.top-right{display:flex;align-items:center;gap:18px}.tag{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:700;padding:6px 11px;border-radius:8px;background:#edf1fb;color:#52637f}.tag.green{background:#e6f8ef;color:#18794d}.mobile-menu{display:none}.main{padding:32px 42px 48px;max-width:1600px;margin:auto}.page-top{display:flex;align-items:end;justify-content:space-between;margin-bottom:24px;gap:20px}.page-top h1{font-size:2.15rem;margin-bottom:8px}.page-top p{color:var(--muted);font-size:14px}.hero{display:grid;grid-template-columns:1.08fr 1fr;min-height:370px;border-radius:var(--radius);overflow:hidden;background:#112b53;color:white;position:relative}.hero-copy{padding:38px 34px;position:relative;z-index:1}.hero .eyebrow{color:#a9c5ff;font-size:10px}.hero h2{font-size:clamp(2rem,3.5vw,3.4rem);margin:17px 0;line-height:1.09;max-width:520px}.hero h2 em{font-style:normal;color:#87e7cf}.hero p{color:#c2cee2;max-width:390px;font-size:14px}.hero-media{position:relative;background-image:linear-gradient(90deg,#112b53 0%,#112b5320 35%,#0b17344f 100%),url('assets/hero.webp');background-size:cover;background-position:56% center;min-height:310px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.hero-badge{position:absolute;right:23px;bottom:25px;background:#ffffffec;color:var(--ink);border:1px solid #ffffff60;padding:14px 18px;border-radius:14px;box-shadow:var(--shadow);font-size:13px;display:flex;gap:12px;align-items:center}.hero-badge .round-icon{background:#e0f6ed;color:#158564}.btn{border:1px solid transparent;border-radius:11px;background:var(--blue);color:#fff;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 18px;font-size:14px;font-weight:700;line-height:1.4;transition:transform .18s,background .18s}.btn:hover{background:#1846cd;transform:translateY(-1px)}.btn.light{background:#fff;color:var(--blue);border-color:var(--line)}.btn.light:hover{background:#edf3ff}.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}.hero .btn.ghost{color:#fff;border-color:#ffffff40}.btn.mint{background:#94ebca;color:#103d3a}.btn.small{padding:9px 13px;font-size:12px}.btn.danger{background:#fff1ef;color:#a43425}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:20px 0 34px}.stat{border:1px solid var(--line);background:#fff;border-radius:16px;padding:18px;display:flex;align-items:center;gap:14px}.round-icon{width:43px;height:43px;border-radius:12px;display:grid;place-items:center;background:#eef2ff;color:var(--blue);flex:none}.stat strong{font-size:21px;line-height:1.2;display:block}.stat p{font-size:12px;color:var(--muted);margin-top:3px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:15px;margin:28px 0 20px}.section-head h2{font-size:1.55rem}.section-head p{margin-top:7px;color:var(--muted);font-size:13px}.filters{display:flex;gap:6px;flex-wrap:wrap;background:#e9edf5;padding:4px;border-radius:10px}.filters button{border:none;background:none;color:#66738a;padding:8px 13px;font-size:12px;font-weight:700;border-radius:7px}.filters button.active{background:#fff;color:var(--ink);box-shadow:0 2px 5px #13233f09}.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.module-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:19px;background:#fff;overflow:hidden;text-decoration:none;transition:transform .2s,box-shadow .2s}.module-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.card-top{height:86px;padding:20px 22px;display:flex;align-items:center;justify-content:space-between;background:var(--tint);color:var(--accent)}.card-top .ico{width:32px;height:32px;stroke-width:1.35}.card-top .module-num{font-size:44px;font-weight:800;letter-spacing:-.07em;opacity:.24;line-height:1}.card-body{padding:20px 22px;flex:1;display:flex;flex-direction:column}.card-body .eyebrow{font-size:9px;color:var(--muted);margin-bottom:9px}.card-body h3{font-size:19px;letter-spacing:-.035em}.card-body p{font-size:12px;color:var(--muted);margin:9px 0 17px;line-height:1.65;min-height:40px}.card-footer{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--muted);gap:8px;border-top:1px solid var(--line);padding-top:14px}.arrow-circle{border:1px solid var(--line);border-radius:50%;width:27px;height:27px;display:grid;place-items:center;color:var(--ink);font-size:16px}.progress-track{height:5px;border-radius:4px;background:#e8edf5;overflow:hidden;margin:12px 0 0}.progress-track span{display:block;height:100%;background:var(--blue);border-radius:4px;transition:width .3s}.final-banner{margin-top:26px;border:1px solid #d6e9e3;background:#e5f5ee;border-radius:20px;padding:25px;display:flex;align-items:center;gap:22px;justify-content:space-between}.final-banner p{font-size:13px;color:#4b7066;margin-top:8px}.final-banner h3{font-size:21px}.footer{border-top:1px solid var(--line);padding-top:24px;margin-top:40px;display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--muted)}.footer a{color:var(--muted)}.panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:27px;margin-bottom:20px}.panel h2{font-size:1.5rem;margin-bottom:15px}.panel h3{margin-bottom:12px}.panel p,.panel li{font-size:14px}.panel ul,.panel ol{padding-left:22px}.intro{padding:28px 30px;border-radius:22px;background:var(--tint,#eaf0ff);position:relative;margin-bottom:22px}.intro h1{font-size:clamp(2rem,3.7vw,3.6rem);margin:14px 0;color:var(--accent,#2458ec)}.intro p{max-width:780px;font-size:14px}.intro-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.lesson-layout{display:grid;grid-template-columns:190px minmax(0,1fr);gap:25px;align-items:start}.lesson-nav{position:sticky;top:20px;display:flex;flex-direction:column;gap:5px}.lesson-nav a{text-decoration:none;font-size:13px;padding:11px 13px;border-radius:10px;color:var(--muted);display:flex;gap:10px;align-items:center}.lesson-nav a.active{background:white;color:var(--blue);box-shadow:0 3px 15px #19356b08}.lesson-nav small{font-size:11px;color:var(--muted);display:block;padding:12px}.lesson-content{min-width:0}.section-kicker{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.12em;color:var(--blue);margin-bottom:10px}.vocab-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.word-card{border:1px solid var(--line);padding:18px;border-radius:14px;text-align:left;background:#fff;min-height:106px}.word-card:hover{border-color:#a5bbf7;background:#fbfcff}.word-card strong{display:block;font-size:18px;color:var(--blue);line-height:1.3}.word-card span{font-size:14px;color:#536078;display:block;margin-top:7px}.word-card small{display:block;font-size:12px;color:var(--muted);margin-top:9px;font-weight:400}.word-card .hidden-answer{color:#98a4b5;font-size:12px}.search{width:100%;padding:12px 16px;border:1px solid var(--line);border-radius:11px;background:#fff;outline:none;margin:0 0 18px;color:var(--ink)}.materials{display:grid;gap:12px}.materials details{border:1px solid var(--line);border-radius:12px;overflow:hidden}.materials summary{padding:16px;cursor:pointer;font-size:14px;font-weight:700;background:#fbfcff}.material-body{padding:18px}.material-body img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:10px;display:block;margin:10px auto}.transcript{white-space:pre-wrap;font-size:14px;line-height:1.7;padding:15px;background:#f7f9fc;border-radius:10px;max-height:460px;overflow:auto;margin-top:12px}.materials .source-label{font-size:11px;color:var(--muted);margin-bottom:12px}.level-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.level-tabs button{border:1px solid var(--line);border-radius:10px;background:white;padding:9px 14px;font-size:13px;font-weight:700}.level-tabs button.active{background:var(--navy);color:white;border-color:var(--navy)}.question{border:1px solid var(--line);border-radius:14px;padding:20px;margin:14px 0;background:#fff}.question legend{font-size:14px;font-weight:700;padding:0 6px}.question label.option{display:flex;align-items:flex-start;gap:10px;padding:11px 13px;border:1px solid var(--line);border-radius:9px;margin:8px 0;font-size:14px;cursor:pointer}.question label.option:has(input:checked){background:#edf3ff;border-color:#8aa8f5}.question input[type=radio]{accent-color:var(--blue);margin-top:5px}.field{display:flex;flex-direction:column;gap:7px;margin:14px 0;font-size:13px;font-weight:700}.field input,.field textarea,.field select,.question input[type=text],.question input[type=number],.question select{width:100%;padding:12px;border:1px solid #d5deeb;border-radius:10px;background:#fff;color:var(--ink);font-size:14px;font-weight:400}.field textarea{min-height:160px;resize:vertical}.feedback{margin-top:12px;padding:12px 15px;background:#eef6ff;color:#23476f;border-radius:9px;font-size:13px}.feedback.good{background:#e8f8ee;color:#176541}.feedback.bad{background:#fff0e9;color:#974222}.feedback:empty{display:none}.notice-inline{font-size:13px;padding:15px 18px;border:1px solid #d3e2ff;background:#edf4ff;border-radius:12px;margin:14px 0;color:#3f567c}.notice-inline.warn{background:#fff7e7;border-color:#f1dfb2;color:#846129}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px;align-items:center}.table-wrap{overflow:auto;width:100%;margin:18px 0}table{border-collapse:collapse;width:100%;font-size:13px;background:#fff}th,td{padding:13px 15px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}th{background:#f4f7fc;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:#64718a}td input{width:100%;min-width:80px;border:1px solid var(--line);border-radius:6px;padding:8px;font:inherit}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}.two-col .panel{margin:0}.metric{font-size:40px;font-weight:800;color:var(--blue);letter-spacing:-.06em}.empty{text-align:center;padding:45px 20px;border:1px dashed #b7c6df;border-radius:15px;color:var(--muted)}.empty h3{color:var(--ink);margin-bottom:12px}.method-row{display:grid;grid-template-columns:34px 1fr;gap:12px;margin:20px 0}.method-row .number{width:30px;height:30px;border-radius:8px;background:#edf2ff;color:var(--blue);display:grid;place-items:center;font-size:13px;font-weight:800}.method-row h3{font-size:16px;letter-spacing:-.02em;margin-bottom:7px}.method-row p{color:var(--muted);font-size:13px}.badge{padding:4px 9px;background:#eef2fa;color:#5b6d8b;border-radius:6px;font-size:11px;display:inline-block}.badge.success{background:#e4f7ed;color:#187247}.badge.pending{background:#fff1d8;color:#885d1b}.quote{border-left:3px solid var(--blue);padding:12px 20px;background:#f1f5ff;border-radius:0 10px 10px 0;font-size:15px;margin:20px 0}.rubric{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:15px 0}.rubric div{background:#f4f7fc;border-radius:10px;padding:13px;font-size:12px}.rubric strong{display:block;font-size:13px;margin-bottom:4px}.report{white-space:pre-wrap;overflow-wrap:anywhere;background:#f6f8fc;border-radius:12px;padding:18px;font-size:13px;max-height:360px;overflow:auto}#notice{position:fixed;bottom:22px;left:50%;transform:translate(-50%,25px);padding:12px 20px;border-radius:12px;background:var(--navy);color:white;font-size:13px;box-shadow:var(--shadow);z-index:100;opacity:0;pointer-events:none;transition:.2s;max-width:90vw}#notice.show{opacity:1;transform:translate(-50%,0)}.step-list{counter-reset:steps;list-style:none;padding:0!important}.step-list li{position:relative;padding:0 0 20px 43px}.step-list li:before{counter-increment:steps;content:counter(steps);position:absolute;left:0;top:0;width:28px;height:28px;display:grid;place-items:center;background:#edf3ff;color:var(--blue);border-radius:50%;font-size:12px;font-weight:800}.section-enter{animation:rise .35s ease-out}@keyframes rise{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}.session-line{font-size:12px;color:var(--muted)}.divider{height:1px;background:var(--line);margin:22px 0}.connection{font-size:12px;color:var(--muted)}.teacher-login{max-width:470px;margin:auto}.checkbox{display:flex;gap:9px;align-items:flex-start;font-size:13px;margin:16px 0}.checkbox input{margin-top:6px}.source-link{font-size:12px;color:var(--blue)}.backlink{font-size:13px;color:var(--muted);text-decoration:none;display:inline-flex;gap:8px;align-items:center;margin-bottom:20px}.credential{font-family:monospace;font-size:20px;padding:12px;background:#eaf8f0;border-radius:10px;user-select:all;overflow-wrap:anywhere}.hidden{display:none!important}
@media(min-width:1600px){.main{padding-top:40px}.hero{min-height:400px}.hero-copy{padding:45px}.card-top{height:100px}}
@media(max-width:1180px){.shell{grid-template-columns:206px 1fr}.sidebar{padding:25px 15px}.main{padding:26px}.topbar{padding:0 26px}.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-copy{padding:28px}.hero{grid-template-columns:1.15fr 1fr}.hero h2{font-size:2.6rem}.lesson-layout{grid-template-columns:160px minmax(0,1fr);gap:18px}.panel{padding:22px}.brand{font-size:13px}}
@media(max-width:850px){.shell{display:block}.sidebar{position:fixed;left:-255px;width:240px;transition:left .2s;box-shadow:var(--shadow)}.sidebar.open{left:0}.mobile-menu{display:grid;place-items:center;border:1px solid var(--line);background:white;width:36px;height:36px;border-radius:8px;flex:none}.topbar{height:68px;padding:0 20px}.top-right{gap:10px}.breadcrumb{margin-right:auto}.top-right .tag{display:none}.main{padding:24px 20px}.hero{grid-template-columns:1.2fr 1fr}.hero h2{font-size:2.5rem}.lesson-layout{display:block}.lesson-nav{position:static;flex-direction:row;overflow:auto;margin-bottom:20px;padding:3px 0 8px}.lesson-nav a{white-space:nowrap}.lesson-nav small{display:none}.vocab-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:590px){.hero{display:flex;flex-direction:column}.hero-copy{padding:28px 25px}.hero h2{font-size:2.5rem}.hero-media{min-height:185px;background-position:50% 55%;background-image:linear-gradient(180deg,#112b53,#112b5300 45%),url('assets/hero.webp')}.hero-badge{bottom:15px;right:15px;padding:10px 14px}.hero-badge .round-icon{width:30px;height:30px}.stats-row{gap:8px;margin-bottom:25px}.stat{padding:13px 9px;display:block}.stat .round-icon{width:28px;height:28px;margin-bottom:10px}.stat strong{font-size:19px}.stat p{font-size:10px}.page-top{align-items:start}.page-top h1{font-size:1.8rem}.page-top>.tag{display:none}.module-grid{grid-template-columns:1fr}.section-head{align-items:start;flex-direction:column}.card-top{height:72px}.card-body p{min-height:0}.final-banner{align-items:start;flex-direction:column}.footer{flex-direction:column;gap:10px}.panel{padding:20px 17px}.intro{padding:25px 20px}.intro h1{font-size:2rem}.vocab-grid,.two-col,.rubric{grid-template-columns:1fr}.top-right .session-line{display:none}.question{padding:14px}.btn{max-width:100%}.level-tabs button{flex:1;font-size:11px;padding:10px 8px}.hero-actions .btn{font-size:12px}.table-wrap{margin:12px 0}.field input,.field textarea,.field select{font-size:16px}.lesson-nav a{font-size:12px;padding:9px}.topbar .breadcrumb{font-size:12px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}@media print{.sidebar,.topbar,.nav,.actions,.lesson-nav,.footer,#notice,.skip{display:none!important}.shell,.lesson-layout{display:block}.main{padding:0}.panel{break-inside:avoid;box-shadow:none}body{background:white}.hero{color:black;background:white}.hero p{color:black}}