@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{--ink:#20372f;--muted:#738078;--paper:#f7f8f2;--green:#247650;--lime:#d5f487;--line:#e1e7db;--white:#fff;--nav:#182e28;--blue:#e5ecfc;--shadow:0 5px 0 #e7eadd}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px 'DM Sans',sans-serif}button,input,select{font:inherit}button,a,input,select,summary{outline-offset:5px}button{cursor:pointer}button{color:inherit}a{color:var(--green)}button:disabled{cursor:not-allowed;opacity:.45}h1,h2,h3,.brand,.big{font-family:'Space Grotesk','DM Sans',sans-serif;letter-spacing:-.045em}h1{font-size:40px;line-height:1.12;margin:12px 0}h2{font-size:23px;margin:0 0 7px}h3{font-size:18px;margin:0}p{line-height:1.6;margin:8px 0}button,a{-webkit-tap-highlight-color:transparent}.shell{display:grid;grid-template-columns:234px 1fr;min-height:100vh}.sidebar{background:var(--nav);color:#d3ded5;padding:36px 22px;position:fixed;inset:0 auto 0 0;width:234px;display:flex;flex-direction:column}.brand{font-size:27px;font-weight:700;color:#fff;display:flex;align-items:center;gap:9px;letter-spacing:-1px}.brand .logo{background:var(--lime);color:var(--nav);border-radius:13px;padding:8px;font:700 19px monospace;transform:rotate(-7deg)}.brand small{font-size:11px;font-family:'DM Sans';letter-spacing:1.8px;color:#8caa9b;display:block;font-weight:500;margin-top:6px}.nav{display:grid;gap:8px;margin-top:44px}.nav button{text-align:left;border:0;background:none;color:#aebfb4;border-radius:12px;padding:14px 15px;display:flex;gap:13px;align-items:center;font-weight:600}.nav button span{font-size:19px;width:22px}.nav button.active{background:var(--lime);color:#253b28}.nav button:hover:not(.active){background:#284138;color:#fff}.sidebar-note{margin-top:auto;border:1px solid #3a5045;border-radius:16px;padding:16px;font-size:12px;line-height:1.6;color:#aebfb4}.sidebar-note b{display:block;color:#d7e6d8;font-size:13px}.profile{border-top:1px solid #3a5045;margin-top:22px;padding-top:22px;display:flex;gap:12px;align-items:center}.avatar{width:36px;height:36px;display:grid;place-items:center;background:#354d41;border:1px solid #526650;border-radius:50%;font-weight:bold;color:#ddedcc}.profile small{color:#8da595}.workspace{grid-column:2;padding:0 40px 40px;max-width:1580px;width:100%;margin:auto}.topbar{height:90px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:15px}.crumb{font-size:13px;color:#738078}.crumb b{color:#344b3c;font-weight:500}.stats{display:flex;gap:25px;align-items:center;font-size:13px;font-weight:700}.stat{display:flex;align-items:center;gap:8px}.stat-icon{width:28px;height:28px;display:grid;place-items:center;border-radius:9px;font-size:17px;background:#e7eddd}.stat-icon.gold{background:#fbefce;color:#b77814}.stat-icon.flame{background:#ffecd9;color:#bc692a}.page{padding-top:28px;animation:in .2s ease}.eyebrow{font-size:10px;letter-spacing:1.7px;font-weight:800;text-transform:uppercase;color:var(--green)}.muted{color:var(--muted);font-size:13px}.row{display:flex;align-items:center;justify-content:space-between;gap:16px}.welcome{margin-bottom:24px}.welcome h1{font-size:29px;margin:5px 0 7px}.welcome p{font-size:14px;color:var(--muted)}.pill{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:11px;font-weight:600;white-space:nowrap}.dot{height:6px;width:6px;border-radius:50%;background:#5e9b65}.dashboard{display:grid;grid-template-columns:minmax(0,1fr) 278px;gap:24px}.hero{background:#e6eddc;border:1px solid #dbe4cf;border-radius:20px;padding:29px;display:flex;position:relative;overflow:hidden;min-height:246px}.hero-copy{position:relative;z-index:1;width:65%}.hero h1{font-size:33px;max-width:350px}.hero p{font-size:13px;color:#60715e;max-width:320px;margin-bottom:20px}.hero .eyebrow{font-size:9px}.mascot{width:215px;height:235px;position:absolute;right:2px;bottom:-3px}.button{border:0;border-radius:10px;padding:13px 20px;background:var(--green);color:#fff;font-size:13px;font-weight:700;box-shadow:0 3px 0 #175a3c;display:inline-flex;align-items:center;justify-content:center;gap:13px;text-decoration:none;transition:transform .12s,background .12s}.button:hover{background:#1c6543;transform:translateY(-1px)}.button:active{transform:translateY(2px);box-shadow:none}.button.secondary{background:white;border:1px solid #d5ddcd;color:var(--ink);box-shadow:0 3px 0 #e7ebdf}.button.small{font-size:12px;padding:10px 14px}.button.flat{box-shadow:none}.linkbutton{background:none;border:0;color:var(--green);padding:7px 0;font-weight:700;font-size:12px}.section-heading{margin:28px 0 17px}.section-heading h2{font-size:21px}.section-heading p{font-size:12px;color:var(--muted);margin:4px 0}.section-heading .muted{font-size:11px}.unit-label{display:flex;align-items:center;gap:10px;margin:21px 0 13px;font-size:10px;color:#899282;letter-spacing:1.4px;font-weight:700}.unit-label:after{content:'';height:1px;background:var(--line);flex:1}.module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.module-card{border:1px solid var(--line);border-radius:15px;background:#fff;padding:18px;box-shadow:var(--shadow);text-align:left;position:relative;transition:transform .15s}.module-card:hover{transform:translateY(-3px);border-color:#b9c9a8}.module-card.featured{border:1.5px solid #78a25d;background:#fdfff8}.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.module-icon{font:700 17px 'Space Grotesk';height:42px;width:42px;display:grid;place-items:center;background:#e5f0d4;color:#527539;border-radius:12px}.module-icon.blue{background:#e7edff;color:#5973aa}.module-icon.purple{background:#ede7fa;color:#8667af}.module-icon.orange{background:#fff0da;color:#b67e38}.module-card h3{font-size:16px;letter-spacing:-.4px}.module-card p{font-size:11px;color:#7d877a;margin:5px 0 16px}.card-meta{display:flex;justify-content:space-between;font-size:10px;color:#85917e}.tag{font-size:9px;letter-spacing:.3px;font-weight:700;color:#77916d}.tag.current{color:#347d4c;background:#edf5e4;padding:5px 8px;border-radius:5px}.mini-progress{height:4px;border-radius:5px;background:#edf0e7;overflow:hidden;margin-top:13px}.mini-progress i{height:100%;display:block;background:#91bd65;transition:width .3s}.sidecards{display:grid;align-content:start;gap:18px}.side-card{border:1px solid var(--line);background:#fff;border-radius:17px;padding:21px}.side-card h3{font-size:16px;letter-spacing:-.4px}.goal-icon{font-size:22px}.goal-ring{height:105px;width:105px;border-radius:50%;display:grid;place-items:center;margin:22px auto;background:conic-gradient(#87b652 var(--pct),#edf1e5 0)}.goal-core{width:85px;height:85px;background:#fff;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center}.goal-core b{font-family:'Space Grotesk';font-size:24px}.goal-core small{font-size:10px;color:var(--muted)}.goal-caption{text-align:center;font-size:11px;color:var(--muted)}.side-card.tip{background:#f0edfa;border-color:#e4dff2}.tip h3{color:#6e5895}.tip p{font-size:12px;color:#7d7190;line-height:1.7;margin-top:13px}.tip code{color:#735293;background:#e7e0f3;padding:2px 4px}.exercise-promo{display:flex;gap:13px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:12px}.promo-icon{font-size:23px;background:#f9eedb;border-radius:10px;padding:10px}.side-card .button{width:100%;margin-top:14px}.badge-row{display:flex;gap:10px;margin-top:18px}.badge-small{width:51px;height:54px;border-radius:14px;display:grid;place-items:center;background:#f1f2ec;color:#a5ad9e;font-size:24px}.badge-small.earned{background:#fff1c8;color:#b68222}.bottom-note{font-size:10px;color:#99a28f;line-height:1.7;text-align:center;margin:20px 10px}.page-head{margin-bottom:26px}.page-head h1{font-size:31px}.page-head p{font-size:14px;color:var(--muted)}.content-narrow{max-width:800px;margin:auto}.panel{background:#fff;border:1px solid var(--line);border-radius:19px;padding:30px;box-shadow:0 5px 0 #edf0e5;margin-bottom:22px}.panel h2{font-size:25px}.lesson-top{display:flex;align-items:center;gap:18px;margin-bottom:22px}.lesson-top .bar{flex:1}.bar{height:9px;background:#e5eadc;border-radius:8px;overflow:hidden}.bar i{display:block;height:100%;background:#89b958;border-radius:8px;transition:width .3s}.close-btn{border:1px solid var(--line);background:#fff;border-radius:10px;width:38px;height:38px;color:#7c8a75;font-size:19px}.lesson-chip{font-size:11px;color:var(--green);font-weight:700;letter-spacing:1px;margin-bottom:14px;display:block}.lesson-copy{font-size:16px;line-height:1.85}.tips-list{list-style:none;padding:0;display:grid;gap:12px;margin:24px 0}.tips-list li{padding:13px 16px;border-radius:10px;background:#f4f6ef;line-height:1.65;font-size:14px;border-left:3px solid #9cbe78}.code-wrap{position:relative;margin:20px 0}.code-label{background:#263a33;border-radius:12px 12px 0 0;padding:10px 16px;font:10px 'DM Sans';letter-spacing:1px;color:#91ac9a;display:flex;justify-content:space-between}.code-wrap pre{margin:0;border-radius:0 0 12px 12px}.code-wrap pre,.code{background:#192d27;color:#def0da;padding:20px;font:13px/1.8 'SFMono-Regular',Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere;tab-size:4}.example-note{border-left:3px solid #b5cf97;padding:8px 16px;color:#607658;font-size:13px;line-height:1.8;margin-bottom:24px}.options{display:grid;gap:12px;margin-top:25px}.option{text-align:left;border:2px solid #e4e9df;background:white;padding:16px;border-radius:12px;box-shadow:0 3px 0 #edf0e8;display:flex;gap:14px;align-items:center;font-size:14px;line-height:1.5}.option:hover{background:#f7faef;border-color:#b2c69e}.option.selected{background:#eff7e4;border-color:#7eaa56}.key{height:27px;min-width:27px;border:1px solid #dce3d5;border-radius:7px;display:grid;place-items:center;font-size:11px;color:#829279}.answer-input{width:100%;border:2px solid #dbe3d1;border-radius:12px;padding:17px;font:18px Consolas,monospace;color:var(--ink);margin-top:24px;background:#fcfdf9}.answer-input:focus{outline:3px solid #d8ecc2;border-color:#8aa969}.actions{display:flex;gap:12px;justify-content:space-between;align-items:center;margin-top:27px}.feedback{margin-top:24px;border:1px solid #cfdfb9;border-radius:13px;padding:18px 20px;background:#f1f9e9;line-height:1.7;font-size:14px;animation:in .2s}.feedback.bad{background:#fff2ed;border-color:#edc4b4;color:#9d4c31}.feedback strong{display:block;font-size:16px}.feedback p{font-size:13px}.hint{border-radius:10px;background:#fff8df;color:#8b743c;font-size:13px;padding:15px;margin-top:18px;line-height:1.7}.order-result{min-height:64px;background:#f2f5ed;border:1px dashed #bccdae;border-radius:12px;padding:12px;display:grid;gap:7px;margin-top:20px}.order-line{border:1px solid #d6e2cc;background:white;padding:10px 13px;border-radius:8px;font:12px/1.5 Consolas,monospace;text-align:left;white-space:pre-wrap;overflow-wrap:anywhere}.order-bank{display:grid;gap:9px;margin-top:16px}.order-result .muted{padding:10px}.filters{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:25px}.filter{border:1px solid var(--line);background:#fff;border-radius:9px;padding:9px 15px;font-size:12px}.filter.active{background:var(--nav);color:#e5f5d8;border-color:var(--nav)}.exercise-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.exercise-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:21px;display:flex;flex-direction:column;text-align:left;box-shadow:var(--shadow)}.exercise-card h3{font-size:17px;margin:14px 0 9px}.exercise-card p{color:var(--muted);font-size:12px;line-height:1.7;margin-bottom:20px}.exercise-card .linkbutton{margin-top:auto;text-align:left}.source-tag{font-size:10px;color:#8c977f;letter-spacing:.6px}.back{margin-bottom:20px}.steps{padding-left:22px;font-size:14px;line-height:1.8}.steps li{margin:10px 0;padding-left:7px}.steps li::marker{color:var(--green);font-weight:700}.solution{margin-top:25px}.solution summary{font-weight:700;font-size:14px;color:var(--green);cursor:pointer;padding:16px;background:#f3f7ec;border-radius:10px}.note{font-size:12px;color:var(--muted);line-height:1.8;margin:16px 0}.mini-quiz{border-top:1px solid var(--line);padding-top:25px;margin-top:25px}.celebrate{text-align:center;padding:40px 20px}.trophy{display:block;font-size:64px;margin-bottom:20px}.results{display:flex;justify-content:center;gap:35px;margin:30px 0}.results b{font:700 29px 'Space Grotesk';display:block}.results small{font-size:12px;color:var(--muted)}.review-card{display:flex;justify-content:space-between;gap:20px;align-items:center;background:#eef4e6;border:1px solid #dce8cf;border-radius:17px;padding:25px;margin-bottom:25px}.review-card p{font-size:13px;color:var(--muted)}.search{width:100%;border:1px solid var(--line);background:#fff;border-radius:12px;padding:15px 18px;margin-bottom:24px}.notebook-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.notebook-grid .panel{margin:0;padding:23px}.notebook-grid h3{font-size:19px;margin-bottom:15px}.notebook-grid p{font-size:13px;color:#6c7a63}.lab-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.lab-code{background:#192d27;border-radius:13px;padding:19px;color:#cfe4c8;font:12px/2 Consolas,monospace;white-space:pre-wrap}.lab-code div{padding:0 7px;border-radius:3px;min-height:24px}.lab-code .current{background:#4a6744;color:#eff8e9}.lab-variables{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}.variable{border:1px solid #dce5d1;background:#f7faef;border-radius:12px;min-width:90px;text-align:center;padding:15px}.variable small{display:block;color:#819172;font:12px Consolas}.variable b{font:700 26px 'Space Grotesk'}.lab-controls{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}select{background:#fff;border:1px solid var(--line);border-radius:8px;padding:10px;color:var(--ink)}.sheet{border-collapse:collapse;width:100%;font:13px Consolas}.sheet td,.sheet th{border:1px solid #dce4d3;text-align:center;padding:10px}.sheet th{background:#f0f4e9;font-weight:400;color:#789067}.sheet td.hot{background:#d8edbf}.progress-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:25px}.metric{border:1px solid var(--line);padding:25px;border-radius:17px;background:#fff}.metric b{font:700 32px 'Space Grotesk';display:block;margin-bottom:8px}.metric span{font-size:12px;color:var(--muted)}.achievement-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.achievement{padding:25px;border-radius:16px;border:1px solid var(--line);background:#fff;opacity:.55}.achievement.earned{opacity:1;background:#fbf9eb;border-color:#e5dcaf}.achievement span{font-size:30px}.achievement h3{font-size:16px;margin:12px 0 7px}.achievement p{font-size:12px;color:var(--muted)}.storage-note{margin-top:28px;font-size:12px;color:var(--muted);line-height:1.8}.empty{text-align:center;padding:50px 25px;color:var(--muted)}#toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:#243d2e;color:white;border-radius:12px;padding:14px 22px;z-index:10;display:none;font-size:13px;box-shadow:0 8px 30px #0002}.mobile-brand{display:none}.copy{background:transparent;border:0;color:#bdd4b6;font-size:10px;padding:0 3px}.divider{height:1px;background:var(--line);margin:25px 0}.check{color:#4a8b43}.source-link{font-size:12px}.warning-save{background:#fff2d4;padding:12px;border-radius:10px;margin:12px 0;font-size:12px}.kbd{font-size:10px;color:#929d87}button:focus-visible,a:focus-visible{outline:3px solid #c2da9b}@keyframes in{from{opacity:.4;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@media(min-width:1500px){.workspace{padding:0 60px 45px}.hero{min-height:270px}.hero h1{font-size:39px}.mascot{width:250px;height:260px}.dashboard{grid-template-columns:minmax(0,1fr) 300px}.module-card{padding:22px}.module-card h3{font-size:18px}}@media(max-width:1150px){.sidebar{width:200px;padding:30px 16px}.shell{grid-template-columns:200px 1fr}.workspace{padding:0 25px 30px}.dashboard{grid-template-columns:minmax(0,1fr) 240px;gap:18px}.hero{padding:24px}.hero h1{font-size:29px}.mascot{right:-20px;width:180px}.hero-copy{width:72%}.exercise-grid{grid-template-columns:1fr 1fr}.side-card{padding:17px}.stats{gap:14px}.brand{font-size:24px}.module-card{padding:15px}}@media(max-width:950px){.dashboard{grid-template-columns:1fr}.sidecards{grid-template-columns:1fr 1fr}.sidecards .bottom-note{grid-column:1/-1}.hero{min-height:240px}.mascot{right:15px;width:220px}.hero-copy{width:65%}.hero h1{font-size:34px}.stats{gap:10px}.stat{font-size:11px}.achievement-list{grid-template-columns:1fr 1fr}}@media(max-width:700px){.shell{display:block}.sidebar{position:fixed;inset:auto 0 0;width:100%;height:73px;padding:7px 6px 9px;z-index:5;border-top:1px solid #41533f}.sidebar .brand,.sidebar-note,.profile{display:none}.nav{display:flex;margin:0;gap:0;justify-content:space-around;height:100%}.nav button{flex-direction:column;justify-content:center;gap:3px;padding:5px 4px;font-size:9px;border-radius:8px;flex:1}.nav button span{font-size:18px;text-align:center}.workspace{padding:0 18px 100px}.topbar{height:75px}.crumb{display:none}.mobile-brand{display:block;font:700 20px 'Space Grotesk';letter-spacing:-1px}.mobile-brand b{color:var(--green)}.stats{gap:12px}.stat-icon{width:23px;height:23px;font-size:14px}.stat.streak small{display:none}.page{padding-top:23px}.welcome h1{font-size:25px}.welcome .pill{display:none}.hero{padding:22px;min-height:250px}.hero h1{font-size:29px}.hero-copy{width:70%}.hero p{max-width:205px;font-size:12px}.mascot{width:170px;right:-22px;bottom:-15px;opacity:.95}.hero .button{padding:12px 15px;font-size:12px}.module-grid{gap:12px}.module-card{padding:15px 12px}.module-card h3{font-size:14px}.module-card p{font-size:10px}.card-meta{font-size:9px}.module-icon{width:36px;height:36px;font-size:15px}.tag{font-size:8px}.sidecards{gap:13px}.side-card{padding:17px}.sidecards .tip{display:none}.sidecards .side-card:last-of-type{display:none}.section-heading h2{font-size:20px}.section-heading .muted{display:none}.panel{padding:21px}.panel h2{font-size:22px}.lesson-copy{font-size:14px}.exercise-grid,.notebook-grid,.lab-grid{grid-template-columns:1fr}.page-head h1{font-size:28px}.options .option{font-size:13px;padding:14px}.progress-cards{gap:10px}.metric{padding:18px 12px}.metric b{font-size:27px}.metric span{font-size:10px}.review-card{padding:20px;align-items:flex-start;flex-direction:column}.achievement-list{gap:10px}.achievement{padding:20px}.actions{gap:10px;flex-wrap:wrap}.actions .button{margin-left:auto}.code-wrap pre{font-size:11px;padding:15px}.source-link{font-size:11px}.welcome{margin-bottom:20px}.results{gap:22px}.sidebar .nav button.active{background:#d5f487}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}
