:root{color-scheme:dark;--paper:#e3ece7;--mint:#92d9bf;--dim:#a9bcb4}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:#091218;color:var(--paper);font-family:system-ui,-apple-system,sans-serif}a{color:var(--paper);text-decoration:none}button,a,input{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--mint);outline-offset:5px}header{display:flex;justify-content:space-between;align-items:center;padding:30px 42px;font-size:11px;border-bottom:1px solid #233832}.edition{font:9px ui-monospace,monospace;letter-spacing:2px;color:#a9bcb4}#engine{font:9px ui-monospace,monospace;color:var(--mint)}main{max-width:1250px;margin:auto;padding:55px 6vw 0}.intro{display:grid;grid-template-columns:1fr 1fr;column-gap:45px;align-items:end}.eyebrow{grid-column:1/-1;margin:0 0 20px;font:10px ui-monospace,monospace;letter-spacing:2px;color:var(--mint)}h1{grid-row:2/4;font-size:clamp(40px,4vw,60px);line-height:1.04;font-weight:400;letter-spacing:-2px;margin:0}h1 em{font-family:Georgia,serif;font-weight:400;color:var(--mint)}.intro>p:not(.eyebrow){font-size:13px;line-height:1.8;color:var(--dim);margin:0 0 12px}.legend{font:10px ui-monospace,monospace;color:#9eb5aa}.legend i{display:inline-block;width:18px;height:1px;background:var(--mint);margin-right:8px;vertical-align:middle}.scope{position:relative;margin-top:40px;border:1px solid #344e45;border-radius:6px;overflow:hidden;height:300px;background:#0c1a1d}canvas{width:100%;height:100%;display:block;cursor:crosshair;touch-action:none}.scope-label,.scope-origin,.scope-hint{position:absolute;font:9px ui-monospace,monospace;pointer-events:none;color:#9bb9ac}.scope-label{left:20px;top:20px;letter-spacing:1.5px}.scope-origin{left:14px;top:calc(50% - 4px)}.scope-hint{right:20px;bottom:20px;font-size:8px;letter-spacing:1px}.controls{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:27px 0;border-bottom:1px solid #273d34}.buttons{display:flex;gap:8px;align-items:center}button{border:1px solid #405c4d;background:#172b24;color:var(--paper);padding:12px 15px;border-radius:4px;font:11px system-ui;cursor:pointer}button:hover{border-color:var(--mint);background:#234337}#pluck{background:#a1dbc1;color:#112b22;border-color:#a1dbc1}label{font-size:10px;color:#c2d0c9}output{float:right;color:var(--mint);font:10px ui-monospace,monospace}input{display:block;width:100%;margin:15px 0 0;accent-color:var(--mint)}.note{color:var(--dim);font-size:10px;line-height:1.7;margin-top:20px}footer{max-width:1250px;margin:36px auto 0;padding:0 6vw 28px;display:flex;justify-content:space-between;gap:20px;font:8px ui-monospace,monospace;color:#9ab0a5;letter-spacing:1px}@media(max-width:800px){header{padding:20px}.edition{display:none}main{padding-top:35px}.intro{display:block}.eyebrow{font-size:9px}h1{font-size:45px;margin-bottom:20px}.intro>p:not(.eyebrow){font-size:12px}.scope{height:260px;margin-top:30px}.controls{grid-template-columns:1fr 1fr;gap:24px}.buttons{grid-column:1/-1}button{padding:12px 14px}footer{font-size:7px}.scope-label{font-size:8px}.scope-hint{font-size:7px}}

button:disabled{opacity:.48;cursor:not-allowed}summary:focus-visible{outline:3px solid var(--mint);outline-offset:5px}.sound-panel{margin-top:30px;padding:26px;border:1px solid #344e45;border-radius:6px;background:#0d1b1e}.sound-heading{display:flex;align-items:center;justify-content:space-between;gap:24px}.sound-heading .eyebrow{margin:0 0 10px}.sound-heading h2{margin:0;font-size:clamp(20px,2.4vw,30px);font-weight:400;letter-spacing:-.5px}.sound-heading p:not(.eyebrow){margin:8px 0 0;color:var(--dim);font-size:11px;line-height:1.6}.sound-heading button{flex:none}.tone-controls{display:grid;grid-template-columns:1fr 1fr auto;gap:28px;align-items:end;margin:24px 0}.tone-controls label{min-width:0}.tone-controls input{margin-top:12px}.tone-controls button{white-space:nowrap}.spectrum-panel{padding:14px 16px 10px;border:1px solid #2b453c;border-radius:4px;background:#0a171a}.spectrum-heading{display:flex;justify-content:space-between;align-items:center;gap:14px;font:9px ui-monospace,monospace;letter-spacing:1px;color:#9bb9ac}.spectrum-heading output{float:none;text-align:right;letter-spacing:0}.spectrum-frame{height:170px;margin-top:10px}#spectrum{cursor:default;touch-action:auto}.spectrum-scale{display:flex;justify-content:space-between;padding:5px 2px 0;font:8px ui-monospace,monospace;color:#8da79b}.learning{margin-top:18px;border-top:1px solid #2b453c;padding-top:15px}.learning summary{width:fit-content;max-width:100%;color:var(--mint);font-size:11px;cursor:pointer}.learning-copy{max-width:900px;padding-top:10px;color:#bdcdc5;font-size:11px;line-height:1.8}.learning-copy p{margin:9px 0}.learning-copy code{color:#d5efdf;background:#132721;padding:2px 4px;border-radius:2px}.learning-copy var{color:var(--mint);font-family:Georgia,serif}.note{max-width:900px}
@media(max-width:800px){.sound-panel{padding:20px 16px;margin-top:24px}.sound-heading{align-items:flex-start}.sound-heading p:not(.eyebrow){max-width:40ch}.tone-controls{grid-template-columns:1fr 1fr;gap:20px}.tone-controls button{grid-column:1/-1;width:100%}.spectrum-frame{height:150px}}
@media(max-width:480px){.sound-heading{display:grid;grid-template-columns:1fr;gap:16px}.sound-heading button{justify-self:start}.tone-controls{grid-template-columns:1fr;gap:16px}.tone-controls button{grid-column:auto}.spectrum-panel{padding:12px 10px 8px}.spectrum-heading{font-size:8px}.spectrum-scale{font-size:7px}.learning-copy{font-size:10px}.buttons{flex-wrap:wrap}.buttons button{flex:1;padding:11px 7px}.controls{gap:18px}.controls>label{min-width:0}}