@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@500;600;700;800&display=swap');
:root{--ink:#15332e;--green:#17674f;--cream:#f6f5ee;--line:#d8e0d8;--orange:#eaa858}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font:16px/1.6 'DM Sans',system-ui,sans-serif}header{max-width:1400px;margin:auto;padding:24px 40px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.brand{font:800 32px Manrope,sans-serif;text-decoration:none;color:var(--green);letter-spacing:-2px}.brand span{display:block;font:700 9px 'DM Sans',sans-serif;letter-spacing:1.7px}.tag,.eyebrow,.instrument-top,.takeaway>span{font-size:11px;font-weight:700;letter-spacing:1.7px}.tag{color:#64766e}main{max-width:1400px;margin:auto;padding:0 40px}.intro{display:grid;grid-template-columns:1fr 440px;gap:60px;align-items:center;padding:44px 0 36px}h1{font:800 clamp(36px,4.4vw,62px)/1.08 Manrope,system-ui;margin:12px 0 16px;letter-spacing:-2px}h1 em{font-style:normal;color:var(--green)}.dek{max-width:490px;color:#51655d;font-size:18px}.quick{border-left:3px solid var(--orange);padding:8px 0 8px 24px}.quick h2{font:700 20px Manrope;margin:0 0 12px}.quick ol{padding-left:20px;font-size:14px}.quick li{padding-left:5px;margin:9px 0}button{cursor:pointer;font:600 14px 'DM Sans',system-ui;border:1px solid var(--line);border-radius:8px;background:white;color:var(--ink);padding:11px 16px}button:hover{background:#e7efe7}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #d38b37;outline-offset:3px}.quick button{background:var(--green);color:white;border:0}.workbench{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(320px,1fr);background:white;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 12px 36px #15332e06}.instrument{padding:22px;align-self:start;position:sticky;top:12px}.instrument-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.instrument-top button{padding:6px 9px;font-size:12px}iframe{display:block;width:100%;aspect-ratio:16/9;border:0;background:white}.caption{font-size:12px;color:#65776e;line-height:1.5;margin:16px 0}nav{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}nav button{padding:12px 7px;min-height:76px;text-align:left;font-size:12px}nav button b{display:block;font:700 20px Manrope;margin-bottom:3px}nav button[aria-pressed=true]{background:var(--green);color:white;border-color:var(--green)}.lesson{background:#f0f4ee;border-left:1px solid var(--line);padding:26px 28px}.mode-head{display:flex;align-items:center;gap:14px}#symbol{display:flex;align-items:center;justify-content:center;min-width:52px;height:48px;background:#dce8dc;border-radius:10px;font:700 24px Manrope}.lesson h2{font:800 29px/1.2 Manrope;margin:16px 0 10px;letter-spacing:-.8px}.summary{font-size:16px;margin:0 0 18px}.audio-row{padding:12px 0 16px;border-bottom:1px solid var(--line)}.audio-row span{font-size:12px;font-weight:700}audio{display:block;width:100%;height:34px;margin-top:7px}.note{padding-top:18px}.note h3{font-size:10px;letter-spacing:1.8px;margin:0 0 6px;color:var(--green)}.note p{font-size:14px;line-height:1.65;margin:0}.caution{margin-top:18px;padding:14px;background:#fff4df;border-radius:8px;border-left:3px solid #db9d46}.caution h3{color:#865014}.lesson details{font-size:12px;margin-top:16px}summary{cursor:pointer}.takeaway{display:flex;align-items:center;gap:30px;background:var(--green);color:white;border-radius:12px;padding:20px 26px;margin:20px 0 36px}.takeaway>span{flex:0 0 150px;color:#cde4d5}.takeaway p{margin:0;font:600 18px/1.5 Manrope}.check{display:grid;grid-template-columns:1fr 1fr;gap:35px;border-bottom:1px solid var(--line);padding-bottom:30px;align-items:center}.check h2{font:700 23px/1.3 Manrope;margin:8px 0}.check p{margin:8px 0}.answers{display:flex;gap:10px}.answers button{flex:1}#feedback{font-size:14px;color:#52675e}footer{font-size:12px;color:#607167;padding:24px 0 32px}footer a{color:var(--green)}@media(max-width:1000px){.intro{grid-template-columns:1fr 1fr;gap:25px}.workbench{grid-template-columns:1.1fr 1fr}main{padding:0 22px}header{padding:20px 22px}.instrument{padding:15px}nav{grid-template-columns:repeat(2,1fr)}.lesson{padding:22px}}@media(max-width:720px){.intro,.workbench,.check{grid-template-columns:1fr}.intro{padding-top:28px;gap:18px}.tag{display:none}.quick{padding-top:0;padding-bottom:0}h1 br{display:none}h1{font-size:39px}.dek{font-size:16px}.instrument{position:static;padding:14px}.lesson{border-left:0;border-top:1px solid var(--line)}nav{grid-template-columns:repeat(4,1fr)}nav button{font-size:11px;min-height:69px}nav button b{font-size:18px}.takeaway{display:block;padding:20px}.takeaway p{margin-top:8px;font-size:16px}main{padding:0 14px}.check{gap:10px}.intro h1{letter-spacing:-1.5px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

/* Give the instrument priority; compact alternatives are for small screens. */
.workbench{grid-template-columns:minmax(0,2fr) minmax(300px,1fr)}
#settings{display:grid}.instrument{padding:16px}#audio-status{font-size:12px;line-height:1.4;margin:5px 0;color:#52675e}
@media(max-width:1000px) and (min-width:721px){.workbench{grid-template-columns:minmax(0,1.5fr) minmax(280px,1fr)}}
@media(max-width:720px){.workbench{grid-template-columns:1fr}.instrument{padding:10px}#settings{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px}#settings button{min-height:58px;padding:7px 4px;font-size:10px}#settings button b{font-size:17px;margin-bottom:0}}

body{display:flow-root}.course-link{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:18px 20px;margin:20px 0;background:#e6eee3;border:1px solid #cbd9ca;border-radius:10px}.course-link strong{font-size:14px}.course-link p{font-size:12px;margin:4px 0 0;color:#52695b}.course-link a{display:inline-block;background:#17674f;color:white;text-decoration:none;font-size:13px;font-weight:700;border-radius:7px;padding:12px 16px;white-space:nowrap}.course-link a:hover{background:#114e3c}@media(max-width:600px){.course-link{display:block;padding:15px}.course-link a{margin-top:12px;white-space:normal}}