@font-face{font-family:"Instrument Sans";src:url("/assets/fonts/InstrumentSans.ttf") format("truetype");font-weight:400 700;font-stretch:75% 100%;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url("/assets/fonts/IBMPlexMono.ttf") format("truetype");font-weight:400;font-display:swap}
:root{--ink:#162f3c;--muted:#586b74;--blue:#1647c1;--blue-dark:#123997;--line:#dfe6e9;--soft:#f4f7f8;--sea:#e9f3f2;--green:#116146;--red:#a73532;--radius:20px;--font:Instrument Sans,Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;color:var(--ink);background:#fff;font-family:var(--font);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{color:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:disabled{cursor:default}a,button{touch-action:manipulation}img{display:block;max-width:100%}svg{flex-shrink:0}h1,h2,h3,h4,p{margin:0}h1,h2,h3{font-weight:650;line-height:1.15;letter-spacing:-.045em}h1{font-size:clamp(40px,5vw,64px)}h2{font-size:clamp(30px,3.3vw,44px)}h3{font-size:23px;letter-spacing:-.03em}p{color:var(--muted)}strong,b{font-weight:700}em{font-style:normal}ul,ol{padding-left:1.35em}[hidden]{display:none!important}.container{width:min(1184px,calc(100% - 80px));margin-inline:auto}.icon{width:21px;height:21px;vertical-align:middle}.eyebrow{font-size:11px;font-weight:750;line-height:1.6;letter-spacing:.12em;color:var(--blue);text-transform:uppercase}.eyebrow.light{color:#e2f4f6}.eyebrow.muted{color:var(--muted)}.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--blue);margin-right:8px;vertical-align:1px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #4278e6;outline-offset:5px;border-radius:5px}.learning-content:focus,.feedback:focus,#sample-feedback:focus{outline:none}.skip-link{position:fixed;z-index:99;top:8px;left:12px;transform:translateY(-180%);padding:12px 20px;background:var(--blue);color:white;border-radius:8px}.skip-link:focus{transform:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:20px;min-height:52px;padding:14px 24px;border:1px solid transparent;border-radius:100px;font-size:14px;font-weight:700;line-height:1.4;transition:background .18s,transform .18s;white-space:normal;text-align:center}.btn:hover{transform:translateY(-2px)}.btn.primary,.btn.accent{background:var(--blue);color:#fff}.btn.primary:hover,.btn.accent:hover{background:var(--blue-dark)}.btn.secondary{background:white;border-color:var(--line);color:var(--ink)}.btn.secondary:hover{background:var(--soft);border-color:#bdcbd1}.btn.compact{min-height:45px;padding:12px 19px;font-size:12px;gap:12px}.btn:disabled{opacity:.4;transform:none}.text-link{display:inline-flex;align-items:center;gap:12px;font-size:14px;font-weight:750;color:var(--blue);border:0;background:none;padding:0}.text-link:hover{text-decoration:underline;text-underline-offset:5px}.text-link .icon{width:18px}.tag{display:inline-flex;align-items:center;gap:6px;width:fit-content;padding:5px 10px;border-radius:100px;background:#eff2f4;color:#526570;font-size:10px;letter-spacing:.025em;font-weight:700;line-height:1.5}.tag-live{background:#eaf3ee;color:#256046}.tag-live:before{content:'';width:5px;height:5px;border-radius:50%;background:#337959}
/* The global navigation stays light; the lesson has its own compact navigation. */
.site-header{background:#fff}.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:26px;min-height:100px}.brand{display:inline-flex;align-items:center;gap:9px;font-size:21px;letter-spacing:-.06em;font-weight:800;white-space:nowrap;color:var(--ink)}.brand-mark{width:36px;height:36px;color:var(--blue)}.brand-dot{color:var(--blue)}.main-nav{display:flex;align-items:center;gap:29px;margin-left:24px}.main-nav a,.progress-link{font-size:12px;font-weight:700}.main-nav a:hover,.progress-link:hover,.main-nav [aria-current]{color:var(--blue)}.nav-end{display:flex;align-items:center;gap:25px}.mobile-toggle{display:none;border:1px solid var(--line);width:44px;height:44px;border-radius:50%;background:white;align-items:center;justify-content:center}.mobile-nav{padding:12px 24px 24px;border-bottom:1px solid var(--line)}.mobile-nav a{display:block;padding:12px;font-weight:650}.site-footer{margin-top:96px;border-top:1px solid var(--line);padding:46px 0 24px}.footer-top{display:flex;justify-content:space-between;align-items:center;gap:24px;padding-bottom:42px}.footer-top p{font-size:14px}.footer-bottom{border-top:1px solid var(--line);padding-top:22px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:var(--muted);font-size:11px}.footer-bottom>div{display:flex;gap:25px}.footer-bottom a:hover{color:var(--blue)}
/* Spacious opening and a real, interactive product preview. */
.hero{text-align:center;padding:53px 0 57px}.hero h1{font-size:clamp(56px,6.6vw,86px);font-weight:650;line-height:1.04;letter-spacing:-.065em;margin:22px 0 24px}.hero h1>span{color:var(--blue)}.hero-description{font-size:17px;line-height:1.75;max-width:680px;margin:auto}.hero-actions{display:flex;justify-content:center;gap:12px;margin:28px 0 15px}.hero-note{font-size:11px}.hero-note span{padding:0 8px}.showcase{border-radius:26px;display:grid;grid-template-columns:.85fr 1.15fr;overflow:hidden;background:#eff4f6}.showcase-ocean{position:relative;min-height:550px;isolation:isolate;background:#164658;overflow:hidden}.showcase-ocean>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:65% center;z-index:-2}.ocean-shade{position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(6,35,48,.76) 0%,rgba(7,42,54,.04) 59%,rgba(7,35,48,.7) 100%)}.ocean-copy{padding:42px;color:white}.ocean-copy h2{font-size:42px;line-height:1.12;margin:16px 0}.ocean-copy p{color:#e4f0f2;font-size:14px}.ocean-route{position:absolute;bottom:30px;left:42px;right:36px;display:flex;justify-content:space-between;gap:12px;color:white;font-size:8px;font-weight:700;letter-spacing:.07em;padding-top:17px;border-top:1px solid #ffffff70}.showcase-product{padding:32px 36px 24px;background:#f1f5f7;display:flex;flex-direction:column}.sample-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:23px}.sample-header>span:first-child{font-size:10px;font-weight:750;letter-spacing:.09em;display:flex;align-items:center;gap:8px}.sample-header .icon{width:17px}.sample-header .tag{background:white}#home-exercise{padding:26px;background:white;border:1px solid #e1e9ed;border-radius:17px;box-shadow:0 10px 30px #17394706}.sample-kicker{font-size:10px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px}.showcase-product h2{font-size:22px;line-height:1.4;letter-spacing:-.03em}.sample-data{display:flex;gap:20px;margin:21px 0 18px;border-bottom:1px solid var(--line);padding-bottom:19px}.sample-data>span{font-size:10px;color:var(--muted)}.sample-data strong{display:block;font-size:18px;color:var(--ink);margin-top:2px}.sample-instruction{font-size:11px;margin-bottom:12px}.sample-answers{display:grid;grid-template-columns:1fr 1fr;gap:8px}.sample-answers button{display:flex;align-items:center;gap:14px;background:white;border:1px solid #d4dfe5;border-radius:9px;min-height:46px;padding:8px 12px;text-align:left;font-size:14px;font-weight:700}.sample-answers button>span{font-size:11px;font-weight:500;color:var(--muted)}.sample-answers button:hover:not(:disabled){border-color:var(--blue);background:#f1f5ff}.sample-answers .correct{border-color:#2e8566;background:#eaf7f0;color:#146245}.sample-answers .wrong{border-color:#c55c53;background:#fff1ef;color:#a13933}.sample-answers button:disabled{opacity:.6}.sample-answers button.correct,.sample-answers button.wrong{opacity:1}.showcase-product .hint-btn{font-size:11px;margin-top:15px;min-height:32px}.sample-bottom{margin-top:auto;padding-top:20px;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:10px;color:var(--muted)}.sample-bottom a{display:flex;align-items:center;gap:9px;color:var(--blue);font-weight:750}.sample-bottom .icon{width:16px}.sample-feedback{margin-top:18px;padding:17px;background:#eff8f3;border-radius:10px;font-size:12px;line-height:1.8}.sample-feedback>strong{display:flex;align-items:center;gap:8px;color:var(--green);font-size:13px}.sample-feedback p{margin-top:8px;color:#315b4c}.sample-feedback .text-link{margin-top:13px;font-size:11px}.sample-feedback.sample-incorrect{background:#f0f4fa}.sample-feedback.sample-incorrect>strong{color:var(--ink)}.sample-feedback.sample-incorrect p{color:var(--muted)}
/* The available lessons come first. Planned courses stay visually separate. */
.section{padding-block:94px}.section-heading{display:flex;justify-content:space-between;gap:40px;align-items:flex-end;margin-bottom:35px}.section-heading h2{margin-top:13px}.section-aside{font-size:14px;line-height:1.85;max-width:370px}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.course-card{min-width:0;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:17px;background:#fff;overflow:hidden;transition:box-shadow .2s,border-color .2s,transform .2s}.course-card:hover{border-color:#a7bac6;box-shadow:0 12px 32px #19384708;transform:translateY(-3px)}.card-top{display:flex;justify-content:space-between;align-items:center;padding:25px 25px 20px}.course-icon{display:flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:14px;background:#eaf0fd;color:#1749b1}.course-icon.maszyna{background:#e8f3ef;color:#246a58}.course-icon.wspolne{background:#f6eedf;color:#826132}.course-icon .icon{width:24px;height:24px}.card-copy{padding:0 25px 23px;flex:1}.card-copy .eyebrow{font-size:9px;letter-spacing:.08em;margin-bottom:10px}.course-card h3{font-size:23px;line-height:1.25;max-width:290px;margin-bottom:11px}.course-card h3 a:after{content:''}.course-level{font-size:11px;color:var(--blue);font-weight:700;margin-bottom:13px}.course-summary{font-size:13px;line-height:1.8}.card-bottom{padding:18px 25px 22px;border-top:1px solid #edf0f2;display:flex;flex-direction:column;gap:16px}.card-bottom>span{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:10px}.card-bottom>span .icon{width:14px;height:14px}.card-bottom>a{display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:750;color:var(--blue)}.card-bottom>a .icon{width:18px}.planned{background:#fafbfc}.planned .course-icon{background:#edf1f3;color:#617684}.planned .course-level{color:var(--muted)}.section-tail{display:flex;justify-content:space-between;gap:20px;margin-top:26px;font-size:12px;color:var(--muted)}.section-tail .text-link{font-size:12px}.method-section{background:#f5f8f8;padding-block:85px}.method-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}.method-card{position:relative}.method-number{position:absolute;top:15px;left:18px;font-size:10px;color:#647d88;font-weight:700;letter-spacing:.08em}.method-visual{height:214px;background:#e8eef1;border-radius:17px;margin-bottom:28px;position:relative;overflow:hidden}.method-card h3{font-size:22px;margin-bottom:12px}.method-card>p{font-size:13px;line-height:1.9;max-width:310px}.formula-visual{display:flex;flex-direction:column;align-items:center;justify-content:center;background:#e8f1ef}.formula-visual>span{font-size:8px;letter-spacing:.1em;color:#486f62}.formula-visual>strong{font-size:37px;line-height:1.3;font-weight:550;color:#24664f}.formula-visual>i{width:100px;height:1px;background:#729b8c;margin:6px 0}.formula-visual>div{display:flex;gap:27px;font-size:25px;color:#24664f}.formula-visual b{font-weight:550}.formula-visual small{font-size:9px;color:#527266;margin-top:7px}.answer-visual{display:flex;flex-direction:column;justify-content:center;gap:9px;padding:25px;background:#ecf0f9}.answer-visual>span{display:flex;align-items:center;gap:9px;border:1px solid #d1dce5;border-radius:8px;background:#ffffffb8;font-size:10px;padding:11px}.answer-visual b{font-weight:600;color:#7f93a0;font-size:9px}.answer-visual .visual-correct{color:#185e48;border-color:#accfb9;background:#f7fffa}.answer-visual .icon{width:15px;height:15px;margin-left:auto}.answer-visual small{display:flex;align-items:center;justify-content:center;gap:5px;font-size:8px;color:#6a7789;margin-top:5px}.answer-visual small .icon{margin:0;width:12px}.review-visual{display:flex;align-items:center;justify-content:center;gap:14px;background:#f1edde}.review-visual>span{z-index:1;width:49px;height:49px;display:grid;place-items:center;border-radius:50%;background:white;color:#8b713c;box-shadow:0 5px 15px #86794b0f}.review-visual>div{z-index:1;display:flex;flex-direction:column}.review-visual strong{font-size:14px}.review-visual small{font-size:9px;margin-top:4px;color:#776e55}.review-visual>i{position:absolute;width:165px;height:165px;border:1px solid #d8d1bc;border-radius:50%;left:-60px;bottom:-55px;box-shadow:0 0 0 22px #e4decc50,0 0 0 44px #e4decc30}.faq-section{display:grid;grid-template-columns:1fr 1.5fr;gap:80px}.faq-section h2{margin:14px 0 20px}.faq-section>div>p:last-child{font-size:14px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list details:first-child{border-top:1px solid var(--line)}summary{cursor:pointer}.faq-list summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:24px;font-size:14px;font-weight:650;padding:24px 0}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary>span{font-size:23px;line-height:1;font-weight:400;color:var(--muted)}.faq-list details[open] summary>span{transform:rotate(45deg)}.faq-list details p{font-size:13px;line-height:1.9;padding:0 42px 24px 0}.final-cta{position:relative;isolation:isolate;background:#eaf2fa;border-radius:24px;padding:58px;display:flex;justify-content:space-between;align-items:center;overflow:hidden}.final-cta h2{margin:15px 0 19px;font-size:44px}.final-cta p:not(.eyebrow){font-size:14px;margin-bottom:26px}.cta-compass{width:205px;height:205px;color:#779ac2;stroke-width:.55;margin-right:5%;transform:rotate(-18deg)}.cta-chart{position:absolute;width:600px;height:600px;right:-170px;top:-200px;border-radius:50%;border:1px solid #c2d4e950;z-index:-1;box-shadow:0 0 0 65px #ccdaed30,0 0 0 130px #ccdaed20}
/* Catalogue and details. */
.page-heading{padding:60px 0 46px}.page-heading h1{margin:16px 0 24px;max-width:840px}.page-heading>p:last-of-type{font-size:17px;max-width:720px;line-height:1.85}.demo-facts{display:flex;gap:12px;margin-top:26px}.demo-facts>span{padding:7px 13px;background:var(--soft);border-radius:6px;font-size:11px;color:var(--muted)}.catalogue-section{padding-bottom:15px}.filter-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 0 27px;margin-bottom:32px;border-bottom:1px solid var(--line)}.filters{display:flex;flex-wrap:wrap;gap:7px}.filters button{background:var(--soft);border:1px solid transparent;border-radius:100px;font-size:12px;font-weight:600;min-height:42px;padding:10px 18px}.filters button[aria-pressed=true]{background:var(--ink);color:white}.filters button:hover:not([aria-pressed=true]){border-color:#a8bbc6}.catalogue-count{font-size:11px}.catalogue-subheading{font-size:23px;letter-spacing:-.025em;margin-bottom:25px}.planned-heading{margin-top:58px;display:flex;align-items:center;justify-content:space-between}.planned-heading>p{font-size:12px;margin-bottom:25px}.catalogue-note{margin-top:30px;font-size:12px;max-width:690px}.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:32px}.breadcrumb .icon{width:16px}.course-hero{background:#f6f8fa;padding:27px 0 55px}.course-hero-grid{display:grid;grid-template-columns:1.25fr .85fr;gap:95px;align-items:center}.course-hero h1{margin:18px 0 20px;font-size:56px;max-width:560px}.level-large{font-size:17px;font-weight:650;color:var(--blue);margin-bottom:20px}.course-hero-description{font-size:16px;line-height:1.9;max-width:530px;margin-bottom:22px}.course-enrol{padding:30px;background:#fff;border:1px solid var(--line);border-radius:20px}.course-enrol .course-icon{margin-bottom:22px}.course-enrol h2{font-size:28px;margin:10px 0 15px}.course-enrol>p:not(.eyebrow){font-size:13px;line-height:1.85}.course-enrol .btn{display:flex;margin:24px 0 14px}.course-enrol small{display:block;font-size:10px;color:var(--muted);text-align:center}.course-body{display:grid;grid-template-columns:1.2fr 1fr;gap:100px}.course-body h2{margin:14px 0 25px;font-size:36px}.course-body p{font-size:15px;line-height:1.9}.course-body h3{margin:35px 0 17px}.course-body .text-link{margin-top:25px}.syllabus{padding:30px;background:var(--soft);border-radius:16px;align-self:start}.syllabus h3{margin:10px 0 24px;font-size:23px}.syllabus ol{padding:0;list-style:none;margin:0 0 20px}.syllabus li{display:flex;gap:15px;padding:15px 0;border-top:1px solid var(--line);font-size:13px}.syllabus li>span{font-size:10px;color:#7c929e;padding-top:3px}.syllabus small{color:var(--muted);font-size:10px;line-height:1.8;display:block}
/* A quiet reading space with a short, predictable learning flow. */
.learning-header{border-bottom:1px solid var(--line);background:white}.learning-header>.container{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:30px}.back-course{display:flex;align-items:center;gap:10px;font-size:12px;margin-left:auto}.back-course .icon{width:17px}.learning-layout{display:grid;grid-template-columns:238px minmax(0,1fr);gap:65px;padding-top:38px}.lesson-sidebar{position:sticky;top:25px;height:fit-content;padding:15px 0 25px}.lesson-sidebar>.eyebrow{font-size:9px;margin-bottom:10px}.lesson-sidebar>h2{font-size:22px;line-height:1.3;max-width:230px}.lesson-sidebar>p:not(.eyebrow){font-size:11px;margin-top:9px}.lesson-nav{display:flex;flex-direction:column;gap:6px;margin-top:32px}.lesson-nav>button{display:flex;gap:12px;align-items:center;text-align:left;width:100%;min-height:65px;padding:14px 15px;border:1px solid transparent;border-radius:12px;background:transparent;color:var(--muted)}.lesson-nav>button:hover{background:var(--soft)}.lesson-nav>button.active{background:#edf2ff;color:var(--blue);border-color:#e4ebfc}.lesson-nav>button>.icon{width:19px;height:19px}.lesson-nav>button>span{font-size:12px;font-weight:750}.lesson-nav small{display:block;font-size:10px;font-weight:450;margin-top:3px;color:var(--muted)}.local-progress{display:flex;gap:9px;align-items:center;margin:30px 15px 0;padding-top:22px;border-top:1px solid var(--line);color:#7b8e98}.local-progress .icon{width:17px}.local-progress p{font-size:10px;line-height:1.7}.learning-content{min-width:0;max-width:800px;padding:12px 0 32px}.lesson-heading>.eyebrow{font-size:10px;letter-spacing:.08em}.lesson-heading h1{font-size:43px;line-height:1.15;margin:15px 0 20px;max-width:750px}.lesson-heading>p:not(.eyebrow){font-size:17px;line-height:1.8}.time{font-size:11px;display:flex;align-items:center;gap:8px;color:var(--muted);margin-top:22px}.time .icon{width:15px}.goal-box{display:flex;gap:15px;padding:23px;background:#eef5f3;border-radius:13px;margin:33px 0}.goal-box>.icon{width:20px;color:#3f7b65;margin-top:3px}.goal-box strong{font-size:12px;color:#2b6952}.goal-box p{font-size:14px;line-height:1.9;margin-top:6px;color:#3f6557}.lesson-intro{font-size:17px;line-height:1.9;max-width:720px;margin-bottom:15px}.lesson-sections>section{padding:33px 0;border-bottom:1px solid var(--line)}.lesson-section-title{display:flex;align-items:center;gap:17px;margin-bottom:17px}.lesson-section-title>span{font-size:11px;color:var(--blue);background:#edf2fe;width:32px;height:32px;display:grid;place-items:center;border-radius:50%}.lesson-section-title h2{font-size:25px;letter-spacing:-.035em}.lesson-sections section>p{font-size:16px;line-height:1.95;max-width:720px}.formula{font-family:var(--font);font-size:20px;font-weight:600;letter-spacing:-.01em;line-height:1.7;color:var(--blue);background:#f2f5fb;border-radius:10px;padding:20px 24px;margin-top:21px;overflow-wrap:anywhere}.worked-example{margin:36px 0;padding:30px;background:#f7f9fa;border:1px solid var(--line);border-radius:16px}.worked-example>h2{font-size:26px;margin:11px 0 25px}.given-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:14px;margin:22px 0 24px}.given-list>div{padding:0 14px 0 0;border-right:1px solid #d9e2e7}.given-list>div:last-child{border:0}.given-list dt{font-size:10px;color:var(--muted);line-height:1.7}.given-list dd{margin:6px 0 0;font-size:23px;font-weight:700;color:var(--ink);line-height:1.4}.calculation-steps{list-style:none;counter-reset:calc;margin:25px 0;padding:0}.calculation-steps li{counter-increment:calc;display:flex;gap:13px;align-items:baseline;padding:14px 0;border-bottom:1px solid #e5ebef;font-size:15px;line-height:1.8;overflow-wrap:anywhere}.calculation-steps li:before{content:counter(calc);flex-shrink:0;width:23px;height:23px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:#e8edf3;color:#677e8c;font-size:9px;font-weight:700}.calculation-steps li:last-child{border:0}.worked-result{display:flex;justify-content:space-between;align-items:center;gap:18px;border-radius:9px;padding:18px 22px;background:#eaf3f0}.worked-result>span{font-size:11px;color:#356955}.worked-result>strong{font-size:25px;line-height:1.4;color:#1b6047}.example-note{font-size:12px;line-height:1.9;margin-top:17px}.context-note{border-left:2px solid #d3b976;padding:5px 0 5px 22px;margin:28px 0}.context-note>strong{font-size:12px;color:#6e5a2b}.context-note p{font-size:13px;line-height:1.9;margin-top:6px}.sources{border-block:1px solid var(--line);margin-top:30px;padding:17px 0;color:var(--muted);font-size:11px}.sources summary{font-weight:650}.sources p{margin:15px 0;line-height:1.9}.sources a,.source-links a{display:flex;gap:8px;align-items:center;line-height:1.8;margin:10px 0;color:var(--blue);font-size:12px;text-decoration:underline;text-underline-offset:4px}.sources a .icon,.source-links .icon{width:14px}.lesson-bottom{display:flex;justify-content:space-between;gap:20px;align-items:center;margin:35px 0 20px}.lesson-bottom>span{font-size:12px;color:var(--muted);max-width:220px}.learning-footer{border-top:1px solid var(--line);padding-block:22px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:10px;margin-top:40px}
/* Quiz: first the data, then the choice, then an explanation. */
.quiz-top{display:flex;justify-content:space-between;gap:20px;align-items:center;margin:0 0 17px;font-size:12px}.quiz-top>span{color:var(--muted);font-size:11px}.progress-track{height:5px;background:#e8edf1;border-radius:5px;overflow:hidden}.progress-track>span{display:block;height:100%;background:var(--blue);border-radius:inherit;transition:width .2s}.question-card{margin-top:28px}.question-card h1{font-size:29px;line-height:1.5;letter-spacing:-.025em;margin:0 0 25px}.question-data{border:1px solid #e0e7ed;background:#f6f8fb;border-radius:13px;padding:20px 23px;margin:24px 0}.question-data h2{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700}.question-data .given-list{margin:17px 0 20px}.question-data .given-list dd{font-size:22px}.question-target{display:flex;align-items:center;gap:13px;border-top:1px solid #dfe5ed;padding-top:14px;line-height:1.6}.question-target>span{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.question-target>strong{font-size:12px;color:var(--blue);font-weight:650}.question-instruction{font-size:12px;line-height:1.9;margin-bottom:15px}.answers{display:flex;flex-direction:column;gap:10px}.answer{display:flex;align-items:center;gap:17px;min-height:64px;padding:16px 19px;background:#fff;border:1px solid #cbd7df;border-radius:11px;text-align:left;font-size:16px;line-height:1.65;font-weight:550;transition:background .15s,border-color .15s}.answer-letter{width:30px;height:30px;display:grid;place-items:center;border-radius:7px;flex-shrink:0;background:#f2f5f7;color:#596f7b;font-size:12px;font-weight:650}.answer:hover:not(:disabled){background:#f5f8ff;border-color:var(--blue)}.answer.selected{border-color:var(--blue);background:#edf3ff;box-shadow:inset 0 0 0 1px var(--blue)}.answer.selected .answer-letter{background:var(--blue);color:#fff}.answer.correct{border-color:#509d7a;background:#f0f9f4}.answer.correct .answer-letter{background:#267352;color:white}.answer.wrong{border-color:#bd6d62;background:#fff5f2}.answer.wrong .answer-letter{background:#b05c50;color:white}.answer:disabled:not(.correct):not(.wrong){color:#657680;border-color:#e0e6ea;background:#fcfdfe}.answer-state{margin-left:auto;display:flex;align-items:center;gap:5px;font-size:10px;white-space:nowrap;font-weight:650}.answer.correct .answer-state{color:var(--green)}.answer.wrong .answer-state{color:var(--red)}.answer-state .icon{width:15px;height:15px}.quiz-controls{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:23px}.hint-btn{display:inline-flex;align-items:center;gap:8px;background:transparent;border:0;font-size:12px;color:#5b6975;font-weight:650;padding:7px 0;min-height:42px;text-align:left}.hint-btn:hover{color:var(--blue)}.hint-btn .icon{width:18px;height:18px}.hint-box{padding:18px 21px;background:#fff9eb;border:1px solid #eddfb5;border-radius:10px;margin-top:18px;font-size:13px;color:#715d27;line-height:1.9}.hint-box>strong{display:block;font-size:11px;margin-bottom:5px}.hint-box p{color:#715d27}.feedback{margin-top:28px;border:1px solid #c9e1d5;border-radius:15px;overflow:hidden;scroll-margin-top:24px}.feedback-heading{padding:18px 25px;background:#edf7f0;display:flex;align-items:center;gap:10px;font-size:18px;line-height:1.5;letter-spacing:-.02em;color:var(--green)}.feedback-heading .icon{width:21px}.feedback.incorrect{border-color:#d6e0ec}.feedback.incorrect .feedback-heading{background:#eef3fb;color:var(--ink)}.feedback-body{padding:25px}.feedback-label{font-size:9px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:7px}.feedback-summary{padding-bottom:20px;margin-bottom:23px;border-bottom:1px solid var(--line)}.correct-answer-text{font-size:18px;font-weight:650;color:var(--ink);line-height:1.65}.correct-answer-text>span{color:var(--green)}.feedback-body h3{font-size:15px;letter-spacing:-.02em;margin:24px 0 10px}.feedback-body>p,.feedback-reason>p{font-size:15px;line-height:1.9}.feedback-reason{padding:16px 20px;margin:0 0 22px;background:#fff7f3;border-left:2px solid #c18975;border-radius:0 9px 9px 0}.feedback-reason>h3{margin:0 0 7px;color:#855443;font-size:13px}.feedback-reason>p{font-size:13px;color:#765d53}.feedback .worked-example{padding:22px;background:#f7f9fb;margin:25px 0}.feedback .worked-example h3{margin:0 0 17px;font-size:17px}.feedback .formula{font-size:18px;padding:15px 18px;margin-top:13px;background:#edf2fa}.feedback .calculation-steps{margin:16px 0}.feedback .calculation-steps li{font-size:14px}.feedback .worked-result{padding:15px 18px}.feedback .worked-result strong{font-size:23px}.takeaway{display:flex;gap:12px;align-items:flex-start;padding:18px 20px;background:#f1f6fa;border-radius:9px;margin-top:23px;color:#46606e;font-size:13px;line-height:1.9}.takeaway .icon{width:18px;color:var(--blue);margin-top:3px}.takeaway strong{display:block;font-size:11px;color:var(--ink);margin-bottom:4px}.quiz-navigation{display:flex;justify-content:space-between;align-items:flex-end;gap:22px;margin-top:28px}.quiz-navigation>.btn{font-size:11px;padding:13px 18px;min-height:46px;gap:8px}.quiz-navigation>.btn .icon{width:16px}.quiz-next-step{text-align:right}.quiz-next-step>p{font-size:10px;margin-bottom:10px}.quiz-next-step .btn{font-size:12px}.quiz-note{font-size:12px;line-height:1.9;padding:17px 21px;background:var(--soft);border-radius:10px;margin:22px 0}.empty-state{text-align:center;border:1px solid var(--line);border-radius:20px;padding:55px 35px}.empty-state>.icon{width:40px;height:40px;color:var(--blue);margin-bottom:23px}.empty-state h2{font-size:30px;margin-bottom:20px}.empty-state p{font-size:15px;line-height:1.9;max-width:560px;margin:0 auto 26px}.result-heading h1{font-size:38px;margin:16px 0 20px}.result-heading>p:last-child{font-size:15px;line-height:1.9}.result-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-top:27px}.stat{padding:23px;background:#f2f5fa;border:1px solid #e2e8f1;border-radius:12px}.stat strong{display:block;font-size:37px;letter-spacing:-.05em;color:var(--blue);line-height:1.25}.stat span{display:block;margin-top:11px;font-size:11px;color:var(--muted);line-height:1.8}.result-review{margin:30px 0}.result-review>div{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}.result-review .icon{width:18px;height:18px;color:var(--green);margin-top:4px}.result-review .incorrect-icon{color:#a66e33}.result-review p{font-size:13px;line-height:1.8;color:var(--ink)}.result-review small{display:block;font-size:10px;margin-top:6px;color:var(--muted)}.result-actions{display:flex;flex-wrap:wrap;gap:12px}.result-actions .btn{font-size:12px}.reset-area{margin-top:35px;border-top:1px solid var(--line);padding-top:22px}.reset-area>button{background:none;border:0;text-decoration:underline;text-underline-offset:4px;color:var(--muted);font-size:11px;padding:10px 0}.reset-confirm{margin-top:18px;padding:20px;background:#f9f3ed;border-radius:12px}.reset-confirm>p{font-size:13px;line-height:1.9;margin-bottom:17px}.reset-confirm>div{display:flex;gap:10px}.storage-warning{background:#fff4d8;color:#765e23;padding:15px 22px;font-size:13px;line-height:1.8;border:1px solid #e8d49e;border-radius:10px;margin:15px}
/* Utility pages. */
.dashboard-card{display:flex;align-items:center;gap:24px;border:1px solid var(--line);padding:26px;border-radius:16px;margin:16px 0}.dashboard-card>div{flex:1}.dashboard-card h2{font-size:22px;margin-bottom:9px}.dashboard-card p{font-size:12px;margin-bottom:15px}.dashboard-card .progress-track{max-width:420px}.dashboard-card .btn{font-size:12px}.prose{max-width:790px;padding-bottom:25px}.prose h2{font-size:26px;margin:38px 0 18px}.prose p{font-size:16px;line-height:1.95;margin:18px 0}.prose .btn{margin-top:25px}.info-content{max-width:790px}.info-content h2{font-size:26px;margin:35px 0 18px}.info-content p{font-size:16px;line-height:1.95;margin:18px 0}.not-found{padding-block:90px}
@media(min-width:1500px){.container{width:min(1280px,calc(100% - 100px))}.hero{padding-top:65px;padding-bottom:65px}.showcase-product{padding:38px 44px 28px}.showcase-ocean{min-height:575px}.showcase-product h2{font-size:24px}.sample-answers button{min-height:50px}.sample-kicker{font-size:11px}.sample-instruction{font-size:12px}.sample-data strong{font-size:20px}.sample-data>span{font-size:11px}.sample-bottom{font-size:11px}}
@media(max-width:1050px){.container{width:calc(100% - 48px)}.main-nav{gap:20px;margin-left:0}.nav-end{gap:18px}.brand{font-size:19px}.main-nav a,.progress-link{font-size:11px}.nav-wrap{gap:20px}.showcase-product{padding:26px 24px 22px}#home-exercise{padding:22px}.ocean-copy{padding:32px}.ocean-copy h2{font-size:36px}.ocean-route{left:30px;right:25px;font-size:7px;gap:7px}.course-grid{gap:14px}.card-top{padding:22px 20px 18px}.card-copy{padding-inline:20px}.card-bottom{padding-inline:20px}.course-card h3{font-size:21px}.course-icon{width:40px;height:40px;border-radius:12px}.tag{font-size:9px}.method-grid{gap:25px}.method-visual{height:200px}.answer-visual{padding-inline:18px}.faq-section{gap:45px}.course-hero-grid{gap:45px}.course-hero h1{font-size:48px}.course-body{gap:55px}.learning-layout{grid-template-columns:210px minmax(0,1fr);gap:35px}.lesson-heading h1{font-size:38px}.question-card h1{font-size:26px}.given-list dd{font-size:21px}.answer{font-size:15px;gap:13px}.feedback-body{padding:22px}}
@media(max-width:800px){.main-nav{display:none}.mobile-toggle{display:flex}.nav-wrap{min-height:82px}.nav-end{gap:15px}.nav-end .btn{font-size:11px}.hero{padding-top:40px;padding-bottom:40px}.hero h1{font-size:65px}.hero-description{font-size:16px}.showcase{grid-template-columns:.75fr 1.25fr}.showcase-ocean{min-height:550px}.ocean-copy{padding:27px}.ocean-copy h2{font-size:32px}.ocean-copy p{font-size:12px}.ocean-copy .eyebrow{font-size:8px}.ocean-route{flex-direction:column;gap:8px;bottom:28px}.showcase-product{padding:23px 20px}.showcase-product h2{font-size:20px}.sample-header{margin-bottom:18px}.sample-header>span:first-child{font-size:8px}.sample-data{gap:16px}.sample-bottom{font-size:9px}.section{padding-block:65px}.section-heading{gap:24px}.section-aside{font-size:12px;max-width:290px}.course-grid{grid-template-columns:1fr}.course-card{display:grid;grid-template-columns:95px 1fr 150px;align-items:center;gap:5px}.card-top{flex-direction:column;justify-content:center;gap:14px;padding:23px 10px 23px 20px}.card-top .tag{font-size:7px;padding:4px 6px}.card-copy{padding:24px 20px}.course-card h3{font-size:22px;max-width:none}.course-level{font-size:10px;margin-bottom:8px}.course-summary{font-size:12px}.card-bottom{height:100%;justify-content:center;border-top:0;border-left:1px solid #edf0f2;padding:25px 15px;gap:16px}.card-bottom>span{font-size:9px;flex-wrap:wrap}.card-question-count{display:none}.card-bottom>a{font-size:11px;gap:7px}.method-section{padding-block:60px}.method-grid{gap:20px}.method-card h3{font-size:19px}.method-card>p{font-size:12px}.method-visual{height:185px}.answer-visual{padding-inline:12px}.answer-visual>span{font-size:8px;gap:7px;padding:9px}.answer-visual small{font-size:7px}.review-visual{gap:8px;flex-direction:column}.review-visual>div{text-align:center}.review-visual strong{font-size:13px}.review-visual small{font-size:8px}.faq-section{grid-template-columns:1fr 1.6fr;gap:28px}.faq-list summary{font-size:12px;gap:14px;padding-block:20px}.faq-list details p{font-size:12px;padding-right:20px}.final-cta{padding:40px}.final-cta h2{font-size:35px}.cta-compass{width:130px;height:130px;margin-right:0}.footer-top{gap:20px;flex-wrap:wrap}.footer-top p{font-size:12px}.footer-bottom{font-size:10px;flex-wrap:wrap}.footer-bottom>div{gap:16px}.site-footer{margin-top:65px;padding-top:35px}.filter-bar{align-items:flex-start;flex-direction:column;gap:14px}.course-hero-grid{gap:30px;grid-template-columns:1fr 1fr}.course-hero h1{font-size:42px}.course-enrol{padding:24px}.course-enrol h2{font-size:25px}.course-hero-description{font-size:14px}.course-body{grid-template-columns:1fr;gap:35px}.course-body h2{font-size:32px}.learning-layout{display:block;padding-top:20px}.lesson-sidebar{position:static;padding:0 0 25px;border-bottom:1px solid var(--line);margin-bottom:28px}.lesson-sidebar>h2{font-size:18px;max-width:none}.lesson-sidebar>.eyebrow{display:none}.lesson-sidebar>p:not(.eyebrow){font-size:10px;margin:5px 0 0}.lesson-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;margin-top:19px}.lesson-nav>button{min-height:65px;padding:12px;gap:9px;background:#f8fafb}.lesson-nav>button>.icon{width:16px}.lesson-nav>button>span{font-size:10px}.lesson-nav small{font-size:8px}.local-progress{display:none}.learning-content{max-width:none;padding-top:0}.lesson-heading h1{font-size:40px;max-width:670px}.learning-header>.container{min-height:75px;gap:20px}.lesson-intro,.lesson-sections section>p{font-size:16px}.question-card h1{font-size:27px}.prose{width:calc(100% - 48px)}}
@media(max-width:560px){.container{width:calc(100% - 36px)}.nav-wrap{min-height:76px;gap:12px}.brand{font-size:20px;gap:6px}.brand-mark{width:32px;height:32px}.nav-end .btn,.progress-link{display:none}.hero{padding:33px 0 33px}.hero>.eyebrow{font-size:9px}.hero h1{font-size:53px;letter-spacing:-.065em;margin:22px 0 21px}.hero-description{font-size:14px;line-height:1.85;max-width:335px}.desktop-only{display:none}.hero-actions{gap:9px;margin:24px 0 14px}.hero-actions .btn{min-height:49px;padding:13px 18px;font-size:12px;gap:12px}.hero-note{font-size:9px}.hero-note span{padding:0 5px}.showcase{grid-template-columns:1fr;border-radius:20px}.showcase-ocean{min-height:230px}.showcase-ocean>img{object-position:center 59%}.ocean-shade{background:linear-gradient(90deg,rgba(4,33,47,.85),rgba(8,38,51,.2))}.ocean-copy{padding:27px}.ocean-copy h2{font-size:32px;margin:12px 0}.ocean-copy p{font-size:11px}.ocean-route{left:auto;right:23px;bottom:25px;border:0;padding:0;font-size:6px;letter-spacing:.05em;gap:6px;text-align:right}.showcase-product{padding:23px 17px 19px}.sample-header{margin-bottom:17px}.sample-header>span:first-child{font-size:9px}.sample-header .tag{font-size:9px}#home-exercise{padding:22px 19px}.showcase-product h2{font-size:20px;line-height:1.45}.sample-kicker{font-size:9px}.sample-data{gap:19px;margin:19px 0 16px}.sample-data>span{font-size:9px}.sample-data strong{font-size:18px}.sample-instruction{font-size:10px;line-height:1.9}.sample-answers button{font-size:14px;gap:13px;min-height:49px}.sample-bottom{font-size:9px;padding-top:19px}.sample-bottom a{gap:5px}.showcase-product .hint-btn{font-size:11px}.sample-feedback{padding:15px;font-size:12px}.section{padding-block:57px}.section-heading{display:block;margin-bottom:25px}.section-heading h2{font-size:32px;margin-top:11px}.section-aside{margin-top:18px;max-width:350px;font-size:13px}.section-heading .eyebrow{font-size:9px}.course-grid{gap:16px}.course-card{display:flex;align-items:stretch}.card-top{padding:23px 23px 19px;flex-direction:row;justify-content:space-between}.course-icon{width:43px;height:43px}.card-top .tag{font-size:9px;padding:5px 10px}.card-copy{padding:0 23px 22px}.course-card h3{font-size:25px;max-width:300px;line-height:1.25}.card-copy .eyebrow{font-size:9px}.course-level{font-size:11px;margin-bottom:11px}.course-summary{font-size:13px}.card-bottom{padding:18px 23px 21px;flex-direction:row;border-left:0;border-top:1px solid #edf0f2;align-items:center;justify-content:space-between;gap:15px}.card-bottom>span{font-size:10px}.card-bottom>a{font-size:12px}.section-tail{display:block;margin-top:22px;line-height:1.9;font-size:11px}.section-tail .text-link{margin-top:12px}.method-section{padding-block:52px}.method-grid{grid-template-columns:1fr;gap:35px}.method-visual{height:210px;margin-bottom:22px}.method-card h3{font-size:24px}.method-card>p{font-size:14px;max-width:none}.method-number{font-size:11px;left:22px;top:18px}.answer-visual{padding-inline:40px;gap:10px}.answer-visual>span{padding:12px 14px;font-size:11px}.answer-visual small{font-size:9px}.review-visual{flex-direction:row;gap:17px}.review-visual>div{text-align:left}.review-visual strong{font-size:17px}.review-visual small{font-size:10px}.review-visual>span{width:55px;height:55px}.faq-section{display:block}.faq-section>div:first-child{margin-bottom:26px}.faq-section h2{font-size:32px}.faq-section h2 br{display:none}.faq-section>div>p:last-child{font-size:13px}.faq-section>div>p br{display:none}.faq-list summary{font-size:13px;padding:21px 0;line-height:1.7}.faq-list details p{font-size:13px;padding-right:15px}.final-cta{padding:34px 28px;border-radius:19px}.final-cta .eyebrow{font-size:8px}.final-cta h2{font-size:35px;line-height:1.2}.final-cta p:not(.eyebrow){font-size:13px;max-width:220px;line-height:1.85}.cta-compass{position:absolute;right:-54px;bottom:30px;width:155px;height:155px;opacity:.5;z-index:-1}.final-cta .btn{font-size:12px}.site-footer{margin-top:55px;padding-top:30px}.footer-top{display:block;padding-bottom:29px}.footer-top p{margin:13px 0 20px}.footer-top .text-link{font-size:12px}.footer-bottom{display:block;font-size:10px}.footer-bottom>div{margin:16px 0;flex-wrap:wrap;gap:17px}.page-heading{padding:33px 0 33px}.page-heading h1{font-size:42px;line-height:1.13;margin:15px 0 22px}.page-heading .eyebrow{font-size:9px}.page-heading>p:last-of-type{font-size:14px;line-height:1.9}.demo-facts{gap:8px;flex-wrap:wrap;margin-top:21px}.demo-facts>span{padding:6px 10px;font-size:10px}.filters{gap:6px}.filters button{font-size:10px;min-height:42px;padding:10px 14px}.filter-bar{gap:14px;margin-bottom:24px;padding-bottom:21px}.catalogue-count{font-size:10px}.catalogue-subheading{font-size:23px;margin-bottom:22px}.planned-heading{display:block;margin-top:42px}.planned-heading .catalogue-subheading{margin-bottom:10px}.planned-heading>p{margin-bottom:21px}.catalogue-note{font-size:11px;line-height:1.9}.course-hero{padding-top:18px;padding-bottom:30px}.breadcrumb{font-size:11px;margin-bottom:27px}.course-hero-grid{grid-template-columns:1fr;gap:28px}.course-hero h1{font-size:43px;margin-top:13px}.level-large{font-size:16px}.course-enrol{padding:27px}.course-enrol h2{font-size:29px}.course-enrol .btn{font-size:13px}.course-body{gap:30px}.course-body h2{font-size:31px}.course-body p{font-size:14px}.syllabus{padding:25px}.learning-header>.container{gap:12px;min-height:70px}.learning-header .brand{font-size:18px}.learning-header .brand-mark{width:28px}.learning-header .tag{display:none}.back-course{font-size:0;gap:0;min-width:40px;height:40px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center}.back-course>span{display:none}.back-course .icon{width:18px}.learning-layout{padding-top:17px}.lesson-sidebar{padding-bottom:19px;margin-bottom:25px}.lesson-sidebar>h2{font-size:17px}.lesson-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;margin-top:15px}.lesson-nav>button{min-height:61px;padding:11px;gap:9px}.lesson-nav>button>span{font-size:11px}.lesson-nav small{font-size:8px}.lesson-heading>.eyebrow{font-size:8px;letter-spacing:.05em}.lesson-heading h1{font-size:34px;line-height:1.18;margin-top:13px}.lesson-heading>p:not(.eyebrow){font-size:15px}.time{font-size:10px;margin-top:18px}.goal-box{padding:19px;gap:11px;margin:24px 0}.goal-box p{font-size:13px}.goal-box strong{font-size:11px}.lesson-intro{font-size:16px;line-height:1.95}.lesson-sections>section{padding:27px 0}.lesson-section-title{gap:11px;margin-bottom:15px}.lesson-section-title h2{font-size:23px;line-height:1.3}.lesson-section-title>span{width:27px;height:27px;font-size:10px;flex-shrink:0}.lesson-sections section>p{font-size:15px;line-height:1.95}.formula{font-size:17px;padding:17px 18px;margin-top:18px;line-height:1.9}.worked-example{padding:22px 19px;margin:28px 0}.worked-example>.eyebrow{font-size:8px}.worked-example>h2{font-size:24px;line-height:1.3;margin-bottom:22px}.given-list{grid-template-columns:1fr;gap:0;margin:19px 0}.given-list>div{display:flex;align-items:baseline;justify-content:space-between;gap:20px;padding:11px 0;border-right:0;border-bottom:1px solid var(--line)}.given-list>div:last-child{border-bottom:0}.given-list dt{font-size:11px;max-width:180px}.given-list dd{font-size:20px;margin:0;text-align:right;white-space:normal}.calculation-steps li{font-size:14px;gap:9px;padding:12px 0}.calculation-steps{margin:19px 0}.worked-result{padding:16px;gap:15px}.worked-result strong{font-size:24px;text-align:right}.example-note{font-size:12px}.context-note{padding-left:16px}.context-note p{font-size:12px;line-height:1.95}.sources{font-size:11px;line-height:1.9}.sources a{font-size:11px;align-items:flex-start}.sources .icon{margin-top:4px}.lesson-bottom{display:block;margin-top:26px}.lesson-bottom>span{display:block;font-size:12px;max-width:none;margin-bottom:17px}.lesson-bottom .btn{width:100%;font-size:13px}.learning-footer{margin-top:17px;padding-block:18px;font-size:9px;flex-wrap:wrap;gap:10px}.quiz-top{font-size:11px;gap:14px}.quiz-top>span{font-size:10px;white-space:nowrap}.question-card{margin-top:24px}.question-card h1{font-size:24px;line-height:1.5;margin-bottom:21px}.question-data{padding:19px 18px;margin-block:21px}.question-data h2{font-size:9px}.question-data .given-list{margin:11px 0 14px}.question-data .given-list dd{font-size:20px}.question-target{padding-top:12px;align-items:flex-start}.question-target>strong{font-size:11px;line-height:1.9}.question-target>span{font-size:9px;line-height:2.3}.question-instruction{font-size:11px;margin-bottom:15px}.answer{padding:14px;min-height:62px;font-size:15px;gap:12px;flex-wrap:wrap}.answer-letter{width:28px;height:28px;font-size:11px}.answer>span:nth-child(2){flex:1;min-width:170px}.answer-state{margin-left:40px;font-size:9px}.quiz-controls{align-items:stretch;flex-direction:column;gap:10px;margin-top:18px}.quiz-controls .btn{font-size:13px;min-height:50px}.quiz-controls .hint-btn{font-size:12px;min-height:43px}.hint-box{font-size:12px;padding:17px}.feedback{margin-top:23px;scroll-margin-top:18px}.feedback-heading{padding:17px 18px;font-size:16px;line-height:1.6}.feedback-body{padding:20px 17px}.feedback-label{font-size:8px}.correct-answer-text{font-size:17px}.feedback-summary{padding-bottom:17px;margin-bottom:20px}.feedback-body>p{font-size:14px;line-height:1.95}.feedback-reason{padding:16px;margin-bottom:20px}.feedback-reason>p{font-size:12px}.feedback-body h3{font-size:14px}.feedback .worked-example{padding:20px 15px;margin:23px 0}.feedback .worked-example h3{font-size:18px;line-height:1.5}.feedback .formula{padding:14px;font-size:16px}.feedback .calculation-steps li{font-size:13px;line-height:1.9}.feedback .worked-result{padding:13px}.feedback .worked-result strong{font-size:21px}.takeaway{padding:16px;gap:10px;font-size:12px}.quiz-navigation{flex-direction:column-reverse;align-items:stretch;gap:16px;margin-top:24px}.quiz-next-step{text-align:left}.quiz-next-step p{font-size:10px}.quiz-next-step .btn{width:100%;font-size:13px}.quiz-navigation>.btn{align-self:flex-start;font-size:11px}.result-heading h1{font-size:34px;line-height:1.2}.result-heading>p:last-child{font-size:14px}.result-heading .eyebrow{font-size:9px}.result-stats{gap:8px}.stat{padding:16px 12px}.stat strong{font-size:31px}.stat span{font-size:9px;line-height:1.9}.quiz-note{font-size:11px;padding:17px}.result-review p{font-size:12px;line-height:1.9}.result-review small{font-size:9px}.result-actions{flex-direction:column}.result-actions .btn{font-size:12px}.empty-state{padding:35px 22px}.empty-state h2{font-size:28px;line-height:1.3}.empty-state p{font-size:14px}.empty-state .btn{font-size:12px}.reset-confirm>div{flex-direction:column}.reset-confirm>p{font-size:12px}.dashboard-card{padding:23px 21px;align-items:flex-start;flex-wrap:wrap;gap:17px}.dashboard-card>div{flex:1;min-width:190px}.dashboard-card h2{font-size:23px;line-height:1.3}.dashboard-card p{font-size:11px;margin:12px 0}.dashboard-card .btn{width:100%;font-size:12px}.dashboard-card .course-icon{width:34px;height:34px;border-radius:9px}.dashboard-card .course-icon .icon{width:19px}.prose{width:calc(100% - 36px)}.prose h2,.info-content h2{font-size:25px;line-height:1.3}.prose p,.info-content p{font-size:15px;line-height:1.95}.not-found{padding-block:60px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* Small text remains readable on both the catalogue and the learning screen. */
.main-nav a,.progress-link{font-size:13px}.course-summary{font-size:14px}.course-level{font-size:12px}.card-copy .eyebrow{font-size:10px}.card-bottom>span{font-size:11px}.tag{font-size:11px}.sample-kicker{font-size:11px}.sample-instruction,.showcase-product .hint-btn{font-size:12px}.sample-data>span{font-size:11px}.sample-bottom{font-size:11px}.hero-note{font-size:12px}.method-card>p{font-size:14px}.faq-list details p{font-size:14px}.lesson-nav>button>span{font-size:13px}.lesson-nav small{font-size:11px}.lesson-sidebar>p:not(.eyebrow){font-size:12px}.local-progress p{font-size:11px}.question-instruction{font-size:13px}.given-list dt{font-size:12px}.question-target>strong{font-size:13px}.answer-state{font-size:11px}.quiz-next-step>p{font-size:12px}.info-page{padding-top:50px;max-width:1000px}.info-page>h1{margin:18px 0 35px}.info-page>.prose{width:100%}.info-page>.btn{margin-top:25px}.formula-visual>strong{font-size:31px;margin:13px 0;letter-spacing:-.045em}.formula-visual small{font-size:10px}
@media(max-width:800px){.lesson-nav>button>span{font-size:11px}.lesson-nav small{font-size:9px}}
@media(max-width:560px){.hero h1{font-size:clamp(44px,13.6vw,53px)}.hero-note{font-size:10px}.hero-description{font-size:15px}.sample-kicker,.sample-data>span{font-size:10px}.sample-instruction,.showcase-product .hint-btn{font-size:12px}.sample-bottom{font-size:10px}.card-top .tag{font-size:10px}.course-summary{font-size:14px}.course-level{font-size:12px}.lesson-nav>button>span{font-size:12px}.lesson-nav small{font-size:10px}.question-instruction{font-size:12px}.question-target>strong{font-size:12px}.given-list dt{font-size:12px}.quiz-next-step>p{font-size:11px}.info-page{padding-top:30px}.info-page>h1{font-size:39px}.info-page .prose{width:100%}}