@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');
:root{--ink:#17352d;--muted:#65766e;--cream:#f6f4ed;--paper:#fffef9;--lime:#c9e86b;--green:#28715a;--deep:#123e32;--orange:#f47f45;--line:#dfe4d7;--mono:'DM Mono',monospace;--sans:'Manrope',sans-serif;--display:'Space Grotesk',sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cream);color:var(--ink);font-family:var(--sans);line-height:1.55}button,a{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.topbar{height:74px;padding:0 5vw;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(246,244,237,.92);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}.brand{font:700 14px var(--mono);letter-spacing:.06em}.brand-mark{display:inline-grid;place-items:center;background:var(--lime);width:27px;height:27px;border-radius:50%;margin-right:8px;color:var(--green)}nav{display:flex;gap:28px;font-size:13px;color:var(--muted)}nav a:hover{color:var(--green)}.progress-wrap{display:flex;gap:9px;align-items:center;font:10px var(--mono);color:var(--muted)}.progress{width:90px;height:5px;background:#dfe4d7;border-radius:4px;overflow:hidden}.progress i{display:block;width:0;height:100%;background:var(--green);transition:width .4s}.hero{min-height:610px;padding:80px 10vw 70px;display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;background:var(--paper)}.eyebrow{font:11px var(--mono);letter-spacing:.12em;color:var(--orange);font-weight:500;margin:0 0 18px}.hero h1,h2{font:700 clamp(42px,5vw,74px)/1.03 var(--display);letter-spacing:-.055em;margin:0}.hero h1 em,h2 em{font-style:normal;color:var(--green)}.hero-intro{max-width:420px;color:var(--muted);font-size:17px;margin:26px 0 32px}.button{border:0;border-radius:4px;padding:14px 19px;display:inline-flex;align-items:center;gap:20px;font-size:13px;font-weight:700;transition:transform .2s,background .2s}.button:hover{transform:translateY(-2px)}.button span{font-size:18px}.primary{background:var(--green);color:white}.outline{border:1px solid rgba(255,255,255,.5);color:white}.hero-visual{height:410px;background:#e8f0cc;position:relative;overflow:hidden;border-radius:50% 50% 5px 5px}.sun{position:absolute;right:13%;top:12%;font-size:70px;line-height:1;color:var(--orange);text-shadow:0 0 0 var(--orange)}.ray{height:2px;width:120px;background:var(--orange);position:absolute;transform-origin:right}.ray1{right:30%;top:32%;transform:rotate(35deg)}.ray2{right:21%;top:22%;transform:rotate(7deg)}.ray3{right:17%;top:38%;transform:rotate(-20deg)}.leaf-art{position:absolute;width:325px;height:200px;left:15%;top:35%;background:var(--green);border-radius:100% 0 100% 0;transform:rotate(-23deg);box-shadow:18px 21px 0 #8cbd54}.leaf-art:after{content:'';position:absolute;left:17px;right:17px;top:96px;height:4px;background:#b3d865;transform:rotate(10deg)}.vein{position:absolute;width:105px;height:3px;background:#9bc75b;transform-origin:left}.v1{left:82px;top:82px;transform:rotate(-35deg)}.v2{left:128px;top:75px;transform:rotate(-15deg)}.v3{left:176px;top:69px;transform:rotate(10deg)}.v4{left:220px;top:61px;transform:rotate(28deg)}.v5{left:92px;top:107px;transform:rotate(35deg)}.bubble{position:absolute;background:var(--paper);padding:8px 12px;border-radius:20px;font:11px var(--mono);box-shadow:0 6px 20px #57794b33}.bubble-a{left:8%;top:22%}.bubble-b{left:7%;top:65%}.bubble-c{right:12%;bottom:20%}.output-note{position:absolute;left:10%;bottom:9%;font:10px var(--mono);display:flex;flex-direction:column;gap:3px}.output-note b{font-size:15px;color:var(--green)}.section{padding:105px 10vw;border-top:1px solid var(--line)}.section-heading{max-width:670px}.section-heading 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#cdd9c2;text-align:left;padding:20px;display:flex;flex-direction:column;gap:5px;color:var(--ink);border-radius:4px}.clue:hover,.clue.active{border-color:var(--green);background:#fffef9}.clue-icon{font-size:28px;color:var(--green);height:36px}.clue b{font-size:14px}.clue small{color:var(--muted)}.clue-detail{grid-column:1/-1;padding:23px 5px 0;border-top:1px solid #cdd9c2;margin-top:6px}.clue-detail b{font-size:16px}.clue-detail p{color:var(--muted);font-size:14px;margin:8px 0}.leaf-section{background:var(--deep);color:white}.leaf-section .eyebrow{color:var(--lime)}.leaf-section .section-heading>p:last-child{color:#b9cac1}.feature-row{display:grid;grid-template-columns:repeat(4,1fr);gap:25px;margin-top:65px}.feature-row article{border-top:1px solid #527166;padding-top:16px}.number{color:var(--lime);font:12px var(--mono)}.feature-row h3{font:600 18px var(--display);margin:18px 0 8px}.feature-row p{color:#b9cac1;font-size:13px;margin:0}.lab-section{background:var(--paper)}.lab-card{display:grid;grid-template-columns:1fr 1fr;margin-top:55px;border:1px solid var(--line);min-height:340px}.lab-controls{padding:34px;border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:flex-start}.control-label{font:11px var(--mono);color:var(--muted)}.condition-buttons{display:flex;flex-direction:column;width:100%;gap:9px;margin:15px 0 auto}.condition{border:1px solid var(--line);background:white;text-align:left;padding:12px;border-radius:3px;color:var(--ink);font-size:13px}.condition.selected{border-color:var(--green);background:#e9f2d2;color:var(--green);font-weight:700}.test-button{background:var(--orange);color:#fff}.experiment{background:#edf1dd;display:flex;align-items:center;justify-content:center;gap:35px;position:relative}.test-tube{height:190px;width:85px;border:4px solid #adc19c;border-top:0;border-radius:0 0 38px 38px;position:relative;background:#ffffff55;overflow:hidden}.liquid{position:absolute;left:0;right:0;bottom:0;height:45%;background:#c7d9c0;transition:background .6s}.leaf-sample{position:absolute;z-index:2;width:52px;height:31px;background:var(--green);border-radius:100% 0 100% 0;left:14px;top:57px;transform:rotate(-25deg);transition:background .6s}.result-label{max-width:180px}.result-label small{font:10px var(--mono);color:var(--orange)}.result-label b{display:block;font:600 19px/1.2 var(--display);margin-top:7px}.lab-note{font-size:13px;color:var(--muted);margin:18px 0 0}.lab-note b{color:var(--ink)}.quiz-section{background:#f3e7d6}.quiz-card{max-width:760px;margin-top:50px;background:var(--paper);padding:28px 34px}.quiz-top{display:flex;justify-content:space-between;font:11px var(--mono);color:var(--muted)}.quiz-progress{height:4px;background:#e8ded0;margin:16px 0 30px}.quiz-progress i{display:block;background:var(--orange);height:100%;width:20%;transition:width .3s}.quiz-card h3{font:600 24px/1.25 var(--display);max-width:620px}.answers{display:grid;gap:9px;margin:25px 0}.answer{background:transparent;border:1px solid var(--line);padding:13px 15px;text-align:left;color:var(--ink);font-size:14px;border-radius:3px}.answer:hover{border-color:var(--green)}.answer.correct{background:#dcefc7;border-color:#7ead58}.answer.wrong{background:#f9d8c7;border-color:#d56c45}.answer:disabled{cursor:default}.feedback{min-height:48px;font-size:13px;color:var(--muted);margin:10px 0}.feedback strong{color:var(--green)}.next-button{display:none}.takeaway{padding:110px 10vw;background:var(--green);color:white}.takeaway .eyebrow{color:var(--lime)}.takeaway h2{font-size:clamp(35px,4.5vw,63px)}.takeaway h2 em{color:var(--lime)}.takeaway p{max-width:510px;color:#d2e0d3;margin:22px 0 30px}footer{display:flex;justify-content:space-between;padding:28px 5vw;background:#0d2d25;color:#a9c0af;font:10px var(--mono)}
@media(max-width:720px){.topbar{padding:0 20px}.topbar nav{display:none}.progress-wrap span{display:none}.progress{width:55px}.hero{padding:55px 25px;grid-template-columns:1fr;min-height:0}.hero-visual{height:300px}.section{padding:72px 25px}.formula{align-items:stretch;flex-direction:column;gap:10px}.formula strong{display:none}.formula div{display:flex;justify-content:space-between;align-items:center}.formula span{margin:0}.formula-foot{flex-wrap:wrap}.split-section{display:block}.clue-grid{margin-top:45px}.feature-row{grid-template-columns:1fr 1fr;gap:30px 17px}.lab-card{grid-template-columns:1fr}.lab-controls{border-right:0;border-bottom:1px solid var(--line)}.experiment{min-height:270px}.quiz-card{padding:22px 20px}.takeaway{padding:75px 25px}footer{padding:25px;gap:15px;flex-direction:column}}