@charset "UTF-8";
/* One small hardware vocabulary: cuts, calibrated rails, material edges. */
.header .menu-button{width:auto;min-width:78px;min-height:44px;display:flex;flex-direction:row;align-items:center;justify-content:flex-end;gap:10px;margin:0;padding:10px 0;font-family:var(--type-ui);font-size:10px;font-weight:500;letter-spacing:.055em}
.header .menu-button span{display:block;width:auto;height:auto;background:none;line-height:1.3}.menu-button .menu-index{font-family:var(--type-en);font-size:15px;letter-spacing:.02em;color:#8d9696;border-left:1px solid #4b5253;padding-left:10px}.menu-button:hover .menu-index{color:#ebeee7}
.editorial .primary{border:0;border-radius:0;min-width:0;min-height:58px;display:inline-flex;justify-content:flex-start;gap:16px;padding:0;margin-top:25px;background:none;color:var(--paper);text-align:left;box-shadow:none;letter-spacing:0}
.primary .sound-key{position:relative;display:block;width:38px;height:52px;border:1px solid #6e7776;background:linear-gradient(90deg,#171a1b,#2c3131 9%,#111515 16%,#0b0e0f 87%,#454c4b 96%,#222829);clip-path:polygon(0 3px,3px 0,100% 0,100% calc(100% - 3px),calc(100% - 3px) 100%,0 100%);transition:transform .18s cubic-bezier(.22,1,.36,1),border-color .18s cubic-bezier(.22,1,.36,1)}
.sound-key svg{display:block;width:100%;height:100%;color:#acb4b2}.sound-key i{position:absolute;left:15px;bottom:6px;width:6px;height:2px;background:#606b68}.primary .play-copy{display:grid;gap:7px;line-height:1.3}.primary .key-caption{font-family:var(--type-ui);font-size:9px;letter-spacing:.12em;font-weight:500;color:#909b99}.primary #play-label{font-family:var(--type-jp);font-size:14px;font-weight:600;line-height:1.4}.editorial .primary:hover{color:#f7f7ed;background:none}.primary:hover .sound-key{border-color:#bdc6c0;transform:translateY(-1px)}.primary[aria-pressed="true"] .sound-key{border-color:#c2ccc4;background:linear-gradient(90deg,#252c2b,#1c2221 18%,#101615 86%,#68756e 98%)}.primary[aria-pressed="true"] .sound-key i{background:#e0e6d8}.primary[aria-pressed="true"] .key-caption{color:#d3dbd4}.primary:active .sound-key{transform:translateY(1px)}
.explode .switch{width:71px;height:24px;border:0;border-radius:0;padding:0;position:relative;background:linear-gradient(#606967,#606967) center/100% 1px no-repeat}
.switch:before,.switch:after{content:"";position:absolute;top:4px;width:1px;height:16px;background:#8a9590}.switch:before{left:0;box-shadow:6px 4px 0 -0.1px #525c58}.switch:after{right:0;box-shadow:-6px 4px 0 -0.1px #525c58}
.explode .switch i{position:absolute;top:1px;left:0;width:8px;height:22px;border-radius:0;border:1px solid #d3dad2;background:linear-gradient(90deg,#7c8880,#e4e9df 50%,#6b776f 65%,#d6dfd3);transform:translateX(63px);transition:transform .32s cubic-bezier(.22,1,.36,1)}.explode[aria-checked="false"] .switch i{transform:translateX(0);background:linear-gradient(90deg,#657267,#b7c4b7 50%,#4f5e52 65%,#adbfae)}
.frequency,.room-control{position:relative}.calibration{position:absolute;left:28px;right:28px;bottom:0;display:flex;align-items:flex-end;justify-content:space-between;height:14px;color:#969f9e;font-family:var(--type-ui);font-size:9px;line-height:1;letter-spacing:.03em;pointer-events:none;font-variant-numeric:tabular-nums}.calibration i{position:absolute;left:0;right:0;top:-10px;height:6px;background:repeating-linear-gradient(90deg,#6c7772 0 1px,transparent 1px 10%);opacity:.75}.calibration>span{position:relative}
input[type="range"]{height:44px}input[type="range"]::-webkit-slider-runnable-track{height:1px;background:linear-gradient(to right,#e0e5da 0 var(--fill),#424e48 var(--fill) 100%)}input[type="range"]::-webkit-slider-thumb{width:10px;height:23px;margin-top:-11px;border-radius:0;border:1px solid #d3dad1;background:linear-gradient(90deg,#7d8a80,#e5e9df 43%,#596a5f 52%,#d2dfd0 70%,#a9bca7);box-shadow:0 2px 5px #0008}input[type="range"]::-moz-range-track{height:1px;background:#424e48}input[type="range"]::-moz-range-progress{height:1px;background:#dbe5d5}input[type="range"]::-moz-range-thumb{width:8px;height:21px;border-radius:0;border:1px solid #d3dad1;background:linear-gradient(90deg,#7d8a80,#e5e9df 43%,#596a5f 52%,#d2dfd0 70%,#a9bca7)}
.lab .frequency{grid-template-rows:22px 65px 47px}.room-control{grid-template-rows:24px 66px 47px}.room-control .calibration{left:4px;right:32px}.room-control:nth-child(2) .calibration{left:32px}.room-controls{padding-bottom:29px}
.finish-options{gap:38px}.finish-options button{position:relative;gap:15px;padding:8px 0 13px}.finish-options .swatch{width:57px;height:23px;border-radius:0;outline:none!important;border:1px solid #7c8681;clip-path:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,6px 100%,0 calc(100% - 6px));box-shadow:inset 0 1px #c5d0c14d}.swatch.graphite{background:repeating-linear-gradient(92deg,transparent 0 2px,#bbc5bd16 2px 3px,transparent 3px 5px),linear-gradient(110deg,#15191a,#4a5351 45%,#202827 70%,#121817)}.swatch.titanium{background:repeating-linear-gradient(92deg,transparent 0 2px,#e7eee74d 2px 3px,transparent 3px 5px),linear-gradient(115deg,#bac7c0,#727f7b 35%,#e4eae1 57%,#8e9f94 80%,#c2d1c3)}.finish-options button:after{content:"";position:absolute;left:0;right:0;bottom:1px;height:1px;background:#4b5950;transform:scaleX(.25);transform-origin:left;transition:transform .22s cubic-bezier(.22,1,.36,1),background .22s cubic-bezier(.22,1,.36,1)}.finish-options button[aria-pressed="true"]:after{transform:scaleX(1);background:#d2decd}.finish-options button:hover:after{transform:scaleX(1)}
.part-tabs{border:0;gap:24px;margin-top:25px;align-items:stretch}.part-tabs button{position:relative;display:grid;grid-template-rows:12px 31px 16px;gap:8px;justify-items:start;min-width:80px;min-height:93px;padding:10px 0 11px;color:#8e9c92;border:0;background:none;text-align:left}.part-tabs button .part-index{font-size:10px;line-height:1;margin:0;color:#798b7c}.part-tabs button b{font:inherit;font-size:11px;font-weight:600;letter-spacing:.08em;line-height:1}.part-tabs svg{width:74px;height:30px;stroke:currentColor;stroke-width:1.05;transition:color .22s cubic-bezier(.22,1,.36,1)}.part-tabs button:after{content:"";position:absolute;left:0;bottom:0;width:74px;height:1px;background:#3b4940;transform:scaleX(.25);transform-origin:left;transition:transform .22s cubic-bezier(.22,1,.36,1)}.part-tabs button[aria-pressed="true"]{color:#e2e9dc}.part-tabs button[aria-pressed="true"] .part-index{color:#cedbc6}.part-tabs button[aria-pressed="true"]:after{background:#c9d9c0;transform:scaleX(1)}.part-tabs button:hover{color:#eff4e7}
.text-link{border:0;padding-bottom:13px;position:relative;gap:24px}.text-link:before{content:"";position:absolute;left:0;right:0;bottom:1px;height:1px;background:#5c695f;transform:scaleX(.72);transform-origin:left;transition:transform .22s cubic-bezier(.22,1,.36,1)}.text-link:hover:before{transform:scaleX(1)}.text-link .link-aperture{width:22px;height:13px;border-left:1px solid #c9d7c2;border-right:1px solid #c9d7c2;background:linear-gradient(#6d826a,#6d826a) center/14px 1px no-repeat}
.next-chapter.chapter-seam{display:grid;grid-template-columns:176px 1fr 84px;column-gap:40px;align-items:center;min-height:207px;padding:30px 4px;border-block-color:#3d4a40}.chapter-seam>.chapter-drawing{display:block;width:176px;height:96px;line-height:1;color:#b3c2ae}.chapter-drawing svg{display:block;width:100%;height:100%;stroke:currentColor;stroke-width:1.1}.chapter-drawing .drawing-axis{stroke-dasharray:2 5;opacity:.45}.drawing-motion{transition:transform .35s cubic-bezier(.22,1,.36,1)}.chapter-seam:hover .drawing-motion{transform:translateX(4px)}.chapter-seam>.chapter-copy{display:block;font-size:inherit;letter-spacing:0;font-weight:400}.chapter-copy small{font-family:var(--type-ui);font-size:10px;font-weight:500;letter-spacing:.1em;line-height:1.3;color:#96a58f;margin:0 0 14px}.chapter-copy strong{display:block;font-family:var(--type-jp);font-size:34px;font-weight:900;line-height:1.35;letter-spacing:-.035em}.chapter-copy i{display:inline-block;font-style:normal;font-size:12px;line-height:1.5;font-weight:400;letter-spacing:0;color:#a8b9a0;margin-top:14px}.chapter-seam>.chapter-number{font-family:var(--type-en);font-size:92px;line-height:1;font-weight:700;letter-spacing:-.04em;align-self:center;text-align:right;color:#8d9f84;transition:color .22s cubic-bezier(.22,1,.36,1)}.chapter-seam:hover>.chapter-number{color:#e4eddb}
/* Stay in the accepted graphite/silver palette. */
.calibration{color:#9aa3a4}.calibration i{background:repeating-linear-gradient(90deg,#687476 0 1px,transparent 1px 10%)}input[type="range"]::-webkit-slider-runnable-track{background:linear-gradient(to right,#dce1dc 0 var(--fill),#465052 var(--fill) 100%)}.part-tabs button{color:#909d9f}.part-tabs button .part-index{color:#859293}.part-tabs button[aria-pressed="true"]{color:#e2e9e4}.part-tabs button[aria-pressed="true"] .part-index{color:#d0dad8}.part-tabs button:after{background:#414d4f}.part-tabs button[aria-pressed="true"]:after{background:#cbd6d6}.chapter-seam>.chapter-drawing{color:#b5bfc0}.chapter-copy small{color:#9aa5a5}.chapter-copy i{color:#adb8b7}.chapter-seam>.chapter-number{color:#8f9b9d}.chapter-seam:hover>.chapter-number{color:#e5ece9}.next-chapter.chapter-seam{border-block-color:#3c4547}.text-link:before{background:#657174}.text-link .link-aperture{border-color:#c4d0d1;background:linear-gradient(#78898c,#78898c) center/14px 1px no-repeat}
@media(min-width:701px){.experience{grid-template-rows:84px minmax(420px,1fr) 184px 54px}}
@media(max-height:800px) and (min-width:701px){.experience{grid-template-rows:74px minmax(420px,1fr) 182px 48px;min-height:752px}}
@media(max-width:1100px) and (min-width:701px){.header .menu-button{min-width:69px;gap:8px}.menu-button .menu-index{padding-left:8px}.calibration{left:20px;right:20px}.room-control .calibration{left:4px;right:22px}.room-control:nth-child(2) .calibration{left:22px}.finish-options{gap:24px}.finish-options .swatch{width:43px}.finish-options button{gap:11px}.part-tabs{gap:19px}.part-tabs button{min-width:65px}.part-tabs svg{width:65px}.part-tabs button:after{width:65px}.next-chapter.chapter-seam{grid-template-columns:140px 1fr 67px;gap:27px}.chapter-seam>.chapter-drawing{width:140px;height:86px}.chapter-copy strong{font-size:29px}.chapter-seam>.chapter-number{font-size:78px}}
@media(max-width:700px){.header .menu-button{min-width:73px;gap:8px;font-size:9px}.menu-button .menu-index{font-size:15px;padding-left:9px}.editorial .primary{margin-top:24px;gap:13px;min-width:0;min-height:53px}.primary .sound-key{width:35px;height:49px}.primary #play-label{font-size:13px}.primary .key-caption{font-size:8px;letter-spacing:.09em}.primary .play-copy{gap:7px}.sound-key i{left:13px}.editorial .sound{font-size:9px;gap:6px}.explode{gap:12px}.explode .switch{width:64px}.explode .switch i{transform:translateX(56px)}.lab{grid-template-rows:auto 142px 112px;padding-bottom:13px}.lab .frequency{grid-template-rows:23px 63px 47px}.frequency .calibration{left:0;right:18px;bottom:1px;font-size:9px}.frequency:nth-child(3) .calibration{left:18px;right:0}.room-control{grid-template-rows:24px 62px 47px;padding-bottom:20px}.room-control:nth-child(2){padding-bottom:20px}.room-control .calibration{left:0;right:17px;bottom:20px}.room-control:nth-child(2) .calibration{left:17px;right:0}.room-controls{padding-bottom:0}.calibration i{top:-9px;height:5px}.finish-options{gap:29px}.finish-options .swatch{width:59px;height:24px}.finish-options button{font-size:10px;gap:14px;padding-bottom:14px}.part-tabs{gap:32px;justify-content:flex-start;margin-top:22px;border-bottom:1px solid #384347;padding-bottom:15px}.part-tabs button{min-width:72px;min-height:95px;padding-top:0}.part-tabs button .part-index{display:block;font-size:10px;margin:0}.part-tabs button b{font-size:11px}.part-tabs svg{width:72px;height:30px}.part-tabs button:after{width:72px}.next-chapter.chapter-seam{grid-template-columns:66px 1fr 31px;gap:19px;min-height:178px;padding:27px 0}.chapter-seam>.chapter-drawing{width:66px;height:69px}.chapter-copy small{font-size:9px;letter-spacing:.055em;margin-bottom:12px}.chapter-copy strong{font-size:23px;line-height:1.4;letter-spacing:-.04em}.chapter-copy i{font-size:11px;line-height:1.5;margin-top:10px}.chapter-seam>.chapter-number{font-size:47px;align-self:start;margin-top:18px}.chapter-seam:hover .drawing-motion{transform:none}}
@media(max-width:350px){.editorial .primary{gap:10px}.primary #play-label{font-size:12px}.primary .sound-key{width:32px;height:47px}.primary .key-caption{font-size:7px;letter-spacing:.08em}.editorial .sound{font-size:8px;gap:4px}.frequency .calibration{right:14px}.frequency:nth-child(3) .calibration{left:14px;right:0}.finish-options{gap:22px}.finish-options .swatch{width:47px;height:23px}.finish-options button{gap:11px}.part-tabs{gap:22px}.part-tabs button{min-width:64px}.part-tabs svg,.part-tabs button:after{width:64px}.next-chapter.chapter-seam{grid-template-columns:55px 1fr 27px;gap:14px}.chapter-seam>.chapter-drawing{width:55px}.chapter-copy strong{font-size:21px}.chapter-copy small{font-size:8px}.chapter-seam>.chapter-number{font-size:43px}}
@media(prefers-reduced-motion:reduce){.sound-key,.switch i,.finish-options button:after,.part-tabs svg,.part-tabs button:after,.text-link:before,.drawing-motion,.chapter-number{transition:none!important}.primary:hover .sound-key,.chapter-seam:hover .drawing-motion{transform:none}}
.chapter-drawing path,.chapter-drawing circle{vector-effect:non-scaling-stroke;stroke-width:1}.chapter-copy i{border-bottom:1px solid #586769;padding-bottom:3px}.primary .key-caption{font-size:10px}
@media(max-width:700px){.primary .key-caption{font-size:9px}.editorial .sound{font-size:9px}}