@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Playfair+Display:wght@700&display=swap');
:root{--bg:#f7f8f5;--surface:#fff;--ink:#14221d;--muted:#66736d;--accent:#196b50;--accent2:#d9efe5;--line:#dce3df;--shadow:0 18px 50px rgba(20,34,29,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:'DM Sans',system-ui,sans-serif;line-height:1.6}body.dark{--bg:#101613;--surface:#17201c;--ink:#edf5f1;--muted:#a7b4ae;--accent:#75d3aa;--accent2:#1d382d;--line:#2b3a34;--shadow:none}a{color:inherit;text-decoration:none}.topbar{height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 max(5vw,24px);border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 92%,transparent);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.brand{font-weight:800;font-size:21px}.brand span{color:var(--accent)}nav{display:flex;gap:26px;align-items:center}nav a{font-size:14px;font-weight:600}.menu{display:none;background:none;border:0;color:var(--ink);font-size:24px}.iconbtn{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:50%;width:38px;height:38px}.hero,.section{max-width:1180px;margin:auto;padding:92px 28px}.hero{min-height:620px;display:grid;grid-template-columns:1.5fr .7fr;gap:80px;align-items:center}.eyebrow{font-size:12px;letter-spacing:.15em;font-weight:800;color:var(--accent)}h1{font-family:'Playfair Display',serif;font-size:clamp(48px,7vw,82px);line-height:1.02;margin:14px 0 24px;letter-spacing:-.04em}h1 span{color:var(--accent)}h2{font-family:'Playfair Display',serif;font-size:clamp(34px,4vw,50px);margin:8px 0 12px}.lead,.sectionintro{color:var(--muted);font-size:18px;max-width:680px}.actions{display:flex;gap:12px;margin:30px 0}.btn{display:inline-flex;justify-content:center;align-items:center;padding:12px 18px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);font-weight:700;cursor:pointer}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.stats{display:flex;gap:42px;margin-top:45px}.stats div{display:flex;flex-direction:column}.stats b{font-size:28px}.stats span,.meta,.card p,.step p{color:var(--muted)}.hero-card,.card,.step{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.hero-card{padding:34px;text-align:center}.ring{width:140px;height:140px;border-radius:50%;margin:0 auto 22px;display:grid;place-items:center;background:conic-gradient(var(--accent) calc(var(--p,0)*1%),var(--accent2) 0);position:relative}.ring:after{content:"";position:absolute;inset:12px;background:var(--surface);border-radius:50%}.ring span{z-index:1;font-size:26px;font-weight:800}.section{padding-top:75px;padding-bottom:75px}.soft{max-width:none;background:var(--accent2)}.soft>*{max-width:1124px;margin-left:auto;margin-right:auto}.grid{display:grid;gap:20px;margin-top:34px}.grid.two{grid-template-columns:repeat(2,1fr)}.grid.four{grid-template-columns:repeat(4,1fr)}.card{padding:30px}.paper h3{font-size:25px;max-width:390px}.badge{display:inline-block;padding:6px 10px;border-radius:99px;background:var(--accent2);color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.08em}.meta{display:flex;gap:18px;font-size:13px;border-top:1px solid var(--line);padding:18px 0}.step{padding:25px}.step>b{color:var(--accent);font-size:13px}.progress{display:flex;gap:25px;align-items:center}.progress>div:first-child{min-width:230px}.bar{height:10px;background:var(--accent2);border-radius:10px;flex:1;overflow:hidden}.bar i{display:block;height:100%;width:0;background:var(--accent);transition:.4s}footer{padding:45px max(5vw,28px);border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:40px;color:var(--muted);font-size:13px}footer p{max-width:560px}.lessonhero{max-width:900px;margin:auto;padding:70px 28px 30px}.lessonwrap{max-width:900px;margin:auto;padding:0 28px 80px}.lesson{margin:18px 0;padding:26px;background:var(--surface);border:1px solid var(--line);border-radius:16px}.lesson h3{margin-top:0}.lesson ul{padding-left:20px}.check{margin-top:15px}.quiz button{margin:5px 5px 5px 0}.feedback{font-weight:700;margin-top:12px}.small{font-size:13px;color:var(--muted)}@media(max-width:760px){.topbar nav{display:none;position:absolute;top:74px;left:0;right:0;background:var(--surface);padding:20px 28px;flex-direction:column;align-items:flex-start;border-bottom:1px solid var(--line)}.topbar nav.open{display:flex}.menu{display:block}.hero{grid-template-columns:1fr;gap:35px;padding-top:60px}.grid.two,.grid.four{grid-template-columns:1fr}.stats{gap:24px}.progress,footer{flex-direction:column;align-items:stretch}}