@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&display=swap');

:root{font-family:'DM Sans',Arial,sans-serif;color:#353b34;background:#f1f0e8;--paper:#f1f0e8;--ink:#353b34;--muted:#6c7469;--line:#d1d4c7;--red:#b44b37;--device:#e0e0d5;--side:#cecec1;--button:#f1f0e7}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0}a{color:inherit;text-underline-offset:4px}a:focus-visible{outline:2px solid var(--red);outline-offset:6px}.skip-link{position:fixed;top:-60px;left:20px;background:var(--ink);color:var(--paper);padding:12px;z-index:20}.skip-link:focus{top:12px}.masthead{max-width:1280px;margin:auto;padding:28px 5%;display:flex;align-items:center;justify-content:space-between;gap:25px;border-bottom:1px solid var(--line)}.brand{font-size:27px;letter-spacing:-1.2px;font-weight:600;text-decoration:none;white-space:nowrap}.masthead nav{display:flex;gap:24px;font-size:13px}.masthead nav a{text-decoration:none}.masthead nav a:hover,.contents a:hover{color:var(--red)}main{max-width:1180px;margin:auto;padding:0 5%}.intro{padding:72px 0 44px;display:grid;grid-template-columns:1.4fr 1fr;gap:50px;align-items:end}.eyebrow{margin:0 0 16px;font-size:12px;letter-spacing:1.6px;text-transform:uppercase;color:var(--muted)}h1{margin:0;font-size:clamp(42px,6.5vw,78px);font-weight:500;letter-spacing:-3.5px;line-height:1.03}.intro-copy{margin:0 0 3px;max-width:330px;font-size:17px;line-height:1.6;color:var(--muted)}.contents{display:flex;flex-wrap:wrap;gap:12px 24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:21px 0;font-size:12px}.contents a{text-decoration:none;white-space:nowrap}.contents span{color:var(--red);margin-right:5px}.lesson{padding:56px 0;border-bottom:1px solid var(--line);scroll-margin-top:24px}.lesson-heading{display:flex;gap:19px;align-items:baseline;margin-bottom:25px}.number{font-size:13px;color:var(--red);min-width:23px;font-variant-numeric:tabular-nums}.lesson h2{font-size:32px;font-weight:500;letter-spacing:-1px;line-height:1.15;margin:0}.lesson-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:65px;align-items:center}.lesson-copy>p:first-child{margin-top:0}.lesson-copy p,.lesson-copy li{font-size:15px;line-height:1.65}.lesson-copy ol{padding-left:21px;margin:0}.lesson-copy li{padding-left:4px;margin:0 0 14px}.lesson-copy li::marker{color:var(--red);font-size:12px}.lesson-copy strong{font-weight:600}.lesson-copy .note{font-size:12px;color:var(--muted);line-height:1.7;margin:22px 0 0}.chord{display:flex;flex-wrap:wrap;gap:7px;align-items:center;margin-top:25px}.chord span{border:1px solid var(--line);padding:7px 10px;border-radius:3px;font-size:11px;font-weight:500}.chord i{font-size:12px;font-style:normal;color:var(--muted)}figure{margin:0}.drawing{width:100%;height:auto;display:block;overflow:visible}.drawing text{font-family:'DM Sans',Arial,sans-serif;fill:var(--ink);font-size:13px}.drawing .caption{font-size:11px;fill:var(--muted)}.drawing .small{font-size:10px}.drawing .tiny{font-size:8px}.drawing .large{font-size:21px;font-weight:500;letter-spacing:-.5px}.drawing .red-text{fill:var(--red)}.drawing .line{fill:none;stroke:var(--ink);stroke-width:1.2;stroke-linecap:round;stroke-linejoin:round}.drawing .leader{fill:none;stroke:var(--ink);stroke-width:1}.drawing .action{fill:none;stroke:var(--red);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}.drawing .accent{fill:var(--red)}.drawing .highlight{fill:var(--red);fill-opacity:.14;stroke:var(--red);stroke-width:1.3}.drawing .quiet{fill:var(--side)}.drawing .panel{fill:none;stroke:var(--line);stroke-width:1}.drawing .led-off{fill:#b3b7a8}.drawing .led-on{fill:var(--red)}.drawing .white-ink{fill:var(--paper)}.drawing .muted{fill:var(--muted)}figcaption{font-size:11px;line-height:1.6;color:var(--muted);margin:16px 0 0}.overview{max-width:900px;margin:0 auto}.overview figcaption{text-align:center}.legend{margin-top:24px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding-top:20px;border-top:1px solid var(--line)}.legend p{font-size:12px;line-height:1.65;margin:0}.legend strong{display:block;font-weight:550;margin-bottom:4px}.legend span{color:var(--muted)}.two-decks{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:21px}.deck-note{border-top:1px solid var(--line);padding-top:14px}.deck-note h3{font-size:14px;font-weight:550;margin:0 0 5px}.deck-note p{font-size:12px;margin:0;color:var(--muted);line-height:1.7}.led-key{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:20px}.led-key div{font-size:11px;color:var(--muted);line-height:1.5}.led-key b{font-weight:500;color:var(--ink);display:block}.led-key i{display:block;background:var(--ink);width:6px;height:6px;border-radius:50%;margin-bottom:10px}.closing{padding:48px 0 62px;display:grid;grid-template-columns:1fr 1fr;gap:50px}.closing h2{font-size:21px;letter-spacing:-.5px;font-weight:500;margin:0 0 13px}.closing p{font-size:13px;line-height:1.7;color:var(--muted);max-width:430px;margin:0}.closing a{display:inline-block;margin:17px 20px 0 0;font-size:13px}.footer{border-top:1px solid var(--line);padding:23px 5%;display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--muted);max-width:1280px;margin:auto}.svg-defs{position:absolute;width:0;height:0;overflow:hidden}.return-link{text-decoration:none}.return-link:hover{text-decoration:underline}
@media(max-width:760px){.masthead{padding:22px 6%}.masthead nav{gap:18px;font-size:12px}.brand{font-size:24px}main{padding:0 6%}.intro{padding:45px 0 32px;display:block}.intro-copy{max-width:420px;font-size:15px;margin:22px 0 0}h1{letter-spacing:-2.3px}.contents{gap:13px 18px;font-size:11px;padding:18px 0}.lesson{padding:39px 0}.lesson-heading{gap:12px;margin-bottom:24px}.lesson h2{font-size:28px}.lesson-grid{grid-template-columns:1fr;gap:28px}.lesson-grid figure{max-width:490px;width:100%;margin:auto}.lesson-copy p,.lesson-copy li{font-size:14px}.legend{grid-template-columns:1fr 1fr;gap:20px}.overview{margin:10px -10px 0}.overview figcaption{padding:0 15px}.closing{grid-template-columns:1fr;gap:34px;padding:36px 0 45px}.footer{padding:20px 6%;font-size:10px}.chord{margin-top:20px}}
@media(max-width:380px){.masthead nav{gap:12px;font-size:11px}.brand{font-size:22px}.lesson h2{font-size:25px}.contents{gap:12px 15px}.two-decks{gap:15px}.legend{gap:16px}.legend p{font-size:11px}.footer{gap:12px}}
.gesture-key{display:flex;flex-wrap:wrap;gap:10px 30px;padding:18px 0 0;font-size:11px;color:var(--muted);line-height:1.6}.gesture-key p{margin:0}.gesture-key strong{font-weight:550;color:var(--ink);margin-right:4px}.orientation-mobile{display:none}
@media(max-width:600px){.orientation-wide{display:none}.orientation-mobile{display:block}.gesture-key{gap:8px 18px;font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.orientation-wide{display:block}.orientation-mobile{display:none}}
@media print{html{scroll-behavior:auto}body{background:#fff;color:#222}.masthead{padding:0 0 15px}.masthead nav,.contents,.skip-link,.return-link{display:none}main{padding:0;max-width:none}.intro{padding:28px 0;grid-template-columns:1.3fr 1fr;gap:35px}h1{font-size:49px;letter-spacing:-2px}.intro-copy{font-size:13px}.lesson{padding:27px 0;break-inside:avoid}.lesson-grid{grid-template-columns:1.05fr 1fr;gap:35px}.lesson h2{font-size:25px}.lesson-heading{margin-bottom:15px}.lesson-copy p,.lesson-copy li{font-size:11px;line-height:1.6}.lesson-copy .note{font-size:10px;margin-top:15px}.lesson-copy li{margin-bottom:8px}.legend p,figcaption{font-size:9px}.overview{max-width:650px}.closing{padding:26px 0;gap:30px}.closing p,.closing a{font-size:10px}.footer{padding:15px 0;font-size:9px}.chord span{font-size:9px;padding:5px 7px}a{text-decoration:none}.drawing{max-height:270px}#know-your-player .drawing{max-height:310px}@page{size:A4;margin:16mm}}

.device-views{display:grid;grid-template-columns:1fr 1fr;gap:32px}.device-views figcaption{max-width:390px;margin:0 auto;text-align:center}.top-view{max-width:380px;margin:20px auto 0}.drawing .physical-status-leds{fill:var(--ink)}
@media(max-width:760px){.device-views{grid-template-columns:1fr;gap:28px}.device-views figure{max-width:470px;margin:auto}.top-view{max-width:330px;margin-top:24px}}

.device-views figure{width:100%;min-width:0}