@font-face{font-family:DM;src:url(/inside/assets/fonts/dm-sans.woff2);font-display:swap}
@font-face{font-family:DM;src:url(/inside/assets/fonts/dm-sans-semibold.woff2);font-weight:600 900;font-display:swap}
@font-face{font-family:Barlow;src:url(/inside/assets/fonts/barlow-condensed.woff2);font-weight:600;font-display:swap}
:root{--ink:#193630;--muted:#50645d;--line:#cbd3c9;--paper:#fbfcf7;--lime:#d8ef9e;--pale:#edf3e7;--mono:ui-monospace,Menlo,monospace;color-scheme:light;color:var(--ink);background:var(--paper);font:15px/1.5 DM,Arial,sans-serif}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:3px}button,input{font:inherit}button,summary{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible,canvas:focus-visible{outline:3px solid #2a7eaf;outline-offset:3px}
.mast{background:#17332d;color:#f4f7ed}.mastinner,main{width:min(1510px,100%);margin:auto;padding:0 clamp(20px,4vw,65px)}.mastinner,.brand,.mast nav,.intro,footer{display:flex;align-items:center}.mastinner{min-height:62px;justify-content:space-between;gap:16px}.brand{gap:11px;text-decoration:none}.brand strong{font-size:22px;letter-spacing:-.9px}.mast nav{gap:clamp(14px,3vw,38px)}.mast nav a{font-size:14px}
.intro{justify-content:space-between;gap:36px;padding:30px 0 22px;align-items:end}.kicker,.tag,.status{font:600 11px/1.4 var(--mono);letter-spacing:.09em;text-transform:uppercase;color:#4a6553}.kicker{margin:0 0 5px}.intro h1,.copy h2,.bench h2{font:600 clamp(46px,5vw,79px)/1 Barlow,Arial,sans-serif;letter-spacing:-.03em;margin:0}.intro .lead{font-size:16px;color:var(--muted);max-width:470px;margin:0}
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin:0 0 16px}.tabs button{display:flex;gap:9px;align-items:center;border:0;border-bottom:3px solid transparent;background:transparent;color:var(--muted);font:600 12px var(--mono);padding:11px 16px}.tabs button span{font:600 15px DM,Arial}.tabs button[aria-pressed=true]{border-color:#376d4d;color:var(--ink);background:#eaf0df}
.layout{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(300px,1fr);gap:18px;align-items:start}.viewer,.lesson{border:1px solid var(--line);border-radius:7px;overflow:hidden}.viewer{background:#f1f4eb}.stage{height:clamp(400px,51vh,640px);position:relative;isolation:isolate;background:radial-gradient(ellipse at 55% 46%,#f4f7f1,#e5ebe3)}canvas{display:block;width:100%;height:100%;touch-action:none}.topleft,.reset,.stagefoot{position:absolute;z-index:3}.topleft{left:15px;top:14px}.reset{top:11px;right:13px;background:#fafcf5;border:1px solid #adbcad;color:var(--ink);padding:6px 9px;border-radius:4px;font-size:12px}.stagefoot{bottom:8px;left:14px;color:#40574b;font-size:11px}.label{position:absolute;z-index:2;pointer-events:none;background:#f7faf3ee;border:1px solid #acbfad;border-radius:4px;padding:3px 6px;font:600 11px/1.3 var(--mono);white-space:nowrap;transform:translate(-50%,-50%)}.label.in{color:#086184;border-color:#85b0c1}.label.out{color:#03644b;border-color:#87b4a0}
.controls{display:flex;align-items:center;gap:16px;padding:12px 16px;border-block:1px solid var(--line);background:#fbfcf8}.controls label{flex:1;min-width:50px;font-size:12px;color:var(--muted)}.controls label span{display:block}.controls input{width:100%;accent-color:#376b53;cursor:pointer}.degree{font:13px var(--mono);min-width:38px}.play,.advance{border:1px solid var(--ink);background:var(--ink);color:white;border-radius:5px;font-size:14px;font-weight:600;padding:10px 14px}.play{min-width:75px}.key{display:flex;gap:8px 16px;flex-wrap:wrap;padding:9px 15px;font-size:12px;color:var(--muted)}.key span{display:flex;align-items:center;gap:6px}.swatch{width:9px;height:9px;border-radius:50%;display:inline-block}.inlet{background:#348bbc}.outlet{background:#168669}.drive{background:#c87c46}
.lesson{background:#fffefa}.copy{padding:clamp(16px,2vw,28px)}.copy h2,.bench h2{font-size:clamp(31px,3vw,46px);margin:8px 0 12px}.copy>p,.bench p{margin:9px 0 16px;color:var(--muted)}.instrument{background:var(--pale);border-radius:6px;padding:13px 15px;margin:15px 0}.row{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 0;border-bottom:1px solid #d5e0d3;font-size:14px}.indicator{font-weight:600;font-size:13px}.filling{color:#066389}.pushing{color:#006649}.metric{font:600 28px/1.2 Barlow,Arial;font-variant-numeric:tabular-nums}.metric small{font:12px var(--mono)}.twobtn{display:flex;flex-wrap:wrap;gap:6px;margin:11px 0}.twobtn button,.return-control{min-height:37px;border:1px solid #9eb3a4;border-radius:4px;flex:1;background:#fbfdf8;color:var(--ink);font:600 13px DM,Arial;padding:6px}.twobtn button[aria-pressed=true],.return-control[aria-pressed=true]{background:#254736;color:white}.return-control{width:100%;margin:0 0 5px}.caption,.subnote,.warn{font-size:13px;color:var(--muted)}.advance{display:flex;justify-content:space-between;align-items:center;width:100%;margin-top:17px;text-decoration:none}.advance span{color:var(--lime);font-size:16px}.error{position:absolute;z-index:4;inset:25% 12% auto;padding:15px;background:#fff;border:1px solid var(--line)}button:disabled{opacity:.5;cursor:default}
.bench{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,6vw,90px);border-top:1px solid var(--line);margin-top:30px;padding:24px 0 9px}.bench h2{font-size:clamp(27px,2.7vw,39px)}.bench table{border-collapse:collapse;width:100%;font-size:14px}.bench td,.bench th{text-align:left;padding:5px;border-bottom:1px solid var(--line)}caption,.bench .source{font-size:12px;text-align:left;color:var(--muted)}caption{padding:3px 5px}.support,footer{border-top:1px solid var(--line);padding:14px 0;margin-top:12px;font-size:13px;color:var(--muted)}.support summary{font-weight:600}.support p{max-width:840px}footer{display:flex;justify-content:space-between;gap:14px;padding-bottom:22px}.support summary,.bench a,footer a{color:var(--ink);font-weight:600}
@media(max-width:760px){.mastinner,main{padding-inline:16px}.mastinner{min-height:56px}.brand strong{font-size:20px}.brand{gap:6px}.brand img{width:26px;height:26px}.mast nav{gap:11px}.mast nav a{font-size:12px}.intro{align-items:start;flex-direction:column;gap:9px;padding:20px 0 14px}.intro .lead{font-size:14px}.tabs{gap:0}.tabs button{padding:10px 8px;gap:5px}.tabs button span{font-size:13px}.layout,.bench{grid-template-columns:minmax(0,1fr)}.layout{gap:12px}.stage{height:clamp(322px,46vh,470px)}.label{font-size:10px}.bench{gap:4px}.bench td,.bench th{font-size:13px}.kicker,.tag{font-size:10px}}
.still-stage .still{width:100%;height:100%;object-fit:contain;display:block}.fallback{position:absolute;bottom:0;left:12px;background:#f7faf2;padding:3px 6px;font-size:12px}.stage canvas[hidden]{display:none}