:root {
  --sp-0: 0; --sp-25: 2px; --sp-50: 4px; --sp-75: 8px; --sp-100: 12px; --sp-200: 16px; --sp-300: 24px;
  --sp-400: 32px; --sp-500: 40px; --sp-600: 48px; --sp-700: 64px; --sp-800: 80px; --sp-900: 96px;
  --g: #1c2e1d; --s: #2c3d2a; --l: #4e5c47; --t: #e3e8c4; --m: #9da78a; --a: #a8c256; --ah: #b4ca6c; --ad: #8ca44b;
  --pm: #58664f; --pl: #bbc3a3;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --pad: var(--sp-300);
}
@media (min-width: 720px) { :root { --pad: var(--sp-500); } }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; color-scheme: dark; }
body { background: var(--g); color: var(--t); font-family: 'Geist', system-ui, sans-serif; font-size: 16px; line-height: 24px; font-weight: 400; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
body.locked { overflow: hidden; }
::selection { background: var(--a); color: var(--g); }
a { color: inherit; }
p, li { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; font-weight: 500; }
.mono { font-family: 'Geist Mono', ui-monospace, monospace; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 var(--pad); }

.skip { position: fixed; left: var(--sp-200); top: calc(-1 * var(--sp-900)); z-index: 100; padding: var(--sp-75) var(--sp-100); background: var(--a); color: var(--g); border-radius: 8px; font-size: 14px; line-height: 20px; font-weight: 600; text-decoration: none; }
.skip:focus { top: var(--sp-200); }

.label { font-family: 'Geist Mono', ui-monospace, monospace; font-size: 12px; line-height: 16px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--a); }
h2 { font-size: 36px; line-height: 40px; letter-spacing: -0.03em; }
.sub { font-size: 18px; line-height: 28px; color: var(--m); max-width: 560px; }
@media (min-width: 768px) { h2 { font-size: 60px; line-height: 1; } .sub { font-size: 20px; } }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: var(--sp-75) var(--sp-300); border-radius: 9999px; background: var(--a); color: var(--g); font: inherit; font-size: 16px; line-height: 24px; font-weight: 600; text-decoration: none; border: 1px solid var(--a); cursor: pointer; transition: background-color 300ms var(--ease), border-color 300ms var(--ease), transform 300ms var(--ease); }
.btn:hover { background: var(--ah); border-color: var(--ah); transform: translateY(-2px); }
.btn:active { transform: scale(0.98); }
.btn.ghost { background: transparent; color: var(--t); border-color: var(--l); }
.btn.ghost:hover { background: var(--s); border-color: var(--m); }
.btn.sm { min-height: 40px; padding: var(--sp-75) var(--sp-200); font-size: 14px; line-height: 20px; }
:focus-visible { outline: 2px solid var(--a); outline-offset: 2px; }

/* floating nav */
.nav { position: fixed; top: var(--sp-200); left: 50%; transform: translateX(-50%); z-index: 60; display: flex; align-items: center; gap: var(--sp-300); width: max-content; max-width: calc(100% - 32px); padding: var(--sp-75) var(--sp-75) var(--sp-75) var(--sp-300); background: var(--g); border: 1px solid var(--l); border-radius: 9999px; }
.brand { font-size: 18px; line-height: 28px; font-weight: 600; letter-spacing: 0.04em; text-decoration: none; color: var(--t); }
.nav-links { display: none; align-items: center; gap: var(--sp-50); }
.nav-links a { padding: var(--sp-75) var(--sp-100); border-radius: 9999px; font-size: 14px; line-height: 20px; font-weight: 500; color: var(--m); text-decoration: none; transition: color 300ms var(--ease), background-color 300ms var(--ease); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--t); }
.nav-links a:hover { background: var(--s); }
.nav-cta { margin-left: auto; }
.menu-toggle { position: relative; width: 40px; height: 40px; border: 0; border-radius: 9999px; background: transparent; cursor: pointer; color: var(--t); }
.menu-toggle span { position: absolute; left: 10px; top: 19px; width: 20px; height: 2px; background: currentColor; border-radius: 2px; transition: transform 500ms var(--ease); }
.menu-toggle span:first-child { transform: translateY(-4px); }
.menu-toggle span:last-child { transform: translateY(4px); }
.menu-toggle[aria-expanded="true"] span:first-child { transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: rotate(-45deg); }
@media (min-width: 860px) { .nav-links { display: flex; } .menu-toggle, .menu { display: none; } }
.menu { position: fixed; inset: 0; z-index: 55; padding: var(--sp-900) var(--pad) var(--sp-400); background: var(--g); opacity: 0; visibility: hidden; transition: opacity 500ms var(--ease), visibility 0s linear 500ms; }
.menu.open { opacity: 1; visibility: visible; transition: opacity 500ms var(--ease), visibility 0s; }
.menu ul { list-style: none; display: flex; flex-direction: column; gap: var(--sp-200); }
.menu li { opacity: 0; transform: translateY(24px); transition: opacity 500ms var(--ease), transform 500ms var(--ease); }
.menu a:not(.btn) { display: block; padding: var(--sp-75) 0; font-size: 36px; line-height: 40px; font-weight: 500; letter-spacing: -0.02em; text-decoration: none; }
.menu.open li { opacity: 1; transform: none; }
.menu.open li:nth-child(1) { transition-delay: 0ms; }
.menu.open li:nth-child(2) { transition-delay: 60ms; }
.menu.open li:nth-child(3) { transition-delay: 120ms; }
.menu.open li:nth-child(4) { transition-delay: 180ms; }
.menu.open li:nth-child(5) { transition-delay: 240ms; }
.menu.open li:nth-child(6) { transition-delay: 300ms; }
.menu.open li:nth-child(7) { transition-delay: 360ms; }

/* hero (pilot page and legal pages) */
.hero { padding: var(--sp-900) 0 var(--sp-700); text-align: center; background: var(--g); }
.hero .label { margin-bottom: var(--sp-200); }
.hero h1 { max-width: 760px; margin: 0 auto; font-size: 48px; line-height: 1; letter-spacing: -0.04em; color: var(--t); }
.hero .sub { max-width: 680px; margin: var(--sp-300) auto 0; }
.hero .row { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--sp-100); margin-top: var(--sp-400); }
@media (min-width: 768px) { .hero h1 { font-size: 72px; } }

/* product hero: device + floor plan */
.explode-wrap { position: relative; height: 360vh; background: var(--g); }
.explode-sticky { position: sticky; top: 0; height: 100vh; height: 100svh; display: flex; align-items: flex-start; overflow: hidden; padding-top: var(--sp-800); background: var(--g); }
.stage { position: relative; display: grid; grid-template-columns: 1fr; gap: var(--sp-0); align-items: center; width: 100%; }
.caption .label { margin-bottom: var(--sp-200); }
.caption h1 { max-width: 760px; font-size: 48px; line-height: 1; letter-spacing: -0.04em; color: var(--t); }
.caption .sub { margin-top: var(--sp-200); font-size: 16px; line-height: 24px; max-width: 520px; }
.caption .row { display: flex; margin-top: var(--sp-300); }
.stagecap { margin-top: var(--sp-400); }
.stage-t { font-size: 18px; line-height: 28px; font-weight: 500; color: var(--t); }
.stage-b { margin-top: var(--sp-50); font-size: 14px; line-height: 20px; color: var(--m); max-width: 480px; }
.progress { margin-top: var(--sp-200); height: 2px; width: 200px; background: var(--l); border-radius: 2px; overflow: hidden; }
.progress i { display: block; height: 100%; width: 100%; background: var(--a); transform: scaleX(0); transform-origin: left; }
.device-col { position: relative; height: 460px; transform: scale(0.5); transform-origin: center top; margin: 0 0 -240px; order: -1; }
.layer { position: absolute; left: 50%; transform: translateX(-50%); will-change: transform; }
.edge { border: 1px solid var(--m); }
.cap { bottom: 288px; width: 136px; height: 34px; }
.cap-body { position: relative; width: 136px; height: 34px; border-radius: 17px; background: var(--g); }
.mic-holes { position: absolute; left: 24px; top: 9px; width: 4px; height: 4px; border-radius: 50%; background: var(--m); box-shadow: 14px 0 var(--m), 28px 0 var(--m), 42px 0 var(--m), 56px 0 var(--m), 70px 0 var(--m), 84px 0 var(--m), 0 12px var(--m), 14px 12px var(--m), 28px 12px var(--m), 42px 12px var(--m), 56px 12px var(--m), 70px 12px var(--m), 84px 12px var(--m); }
.led { position: absolute; top: -10px; left: 50%; transform: translateX(-50%); width: 8px; height: 8px; border-radius: 50%; background: var(--a); animation: breathe 3s ease-in-out infinite; }
@keyframes breathe { 50% { opacity: 0.4; } }
.board { bottom: 236px; width: 108px; height: 40px; }
.board-body { position: relative; width: 108px; height: 40px; border-radius: 8px; background: var(--t); }
.chip { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 26px; height: 26px; border-radius: 4px; background: var(--g); }
.shell { bottom: 96px; width: 136px; height: 136px; }
.shell-body { position: relative; width: 136px; height: 136px; border-radius: 36px; background: var(--a); overflow: hidden; border: 0; }
.shell-body::after { content: ""; position: absolute; left: 16px; right: 16px; top: 20px; height: 1px; background: var(--ad); box-shadow: 0 12px var(--ad), 0 24px var(--ad), 0 36px var(--ad), 0 48px var(--ad), 0 60px var(--ad), 0 72px var(--ad), 0 84px var(--ad); }
.driver { bottom: 44px; width: 116px; height: 44px; }
.driver-body { width: 116px; height: 44px; border-radius: 0 0 60px 60px / 0 0 40px 40px; border-top: none; background: var(--g); }
.base { bottom: 22px; width: 170px; height: 14px; }
.base-body { width: 170px; height: 14px; border-radius: 50%; background: var(--l); }
.callout { display: none; position: absolute; z-index: 3; max-width: 150px; opacity: 0; transform: translateY(8px); transition: opacity 500ms var(--ease), transform 500ms var(--ease); }
.callout.on { opacity: 1; transform: none; }
.callout b { display: block; font-size: 16px; line-height: 24px; font-weight: 500; }
.callout span { display: block; margin-top: var(--sp-50); font-size: 14px; line-height: 20px; color: var(--m); }
.co-mic { top: 4%; right: 0; }
.co-compute { top: 28%; left: 0; text-align: right; }
.co-driver { bottom: 22%; right: 0; }
.co-plugs { bottom: 4%; left: 0; text-align: right; }
@media (min-width: 861px) {
  .explode-wrap { height: 420vh; }
  .explode-sticky { align-items: center; padding-top: var(--sp-700); }
    .stage { grid-template-columns: 1fr 1fr; gap: var(--sp-700); }
  .caption h1 { font-size: 72px; }
  .caption .sub { font-size: 20px; line-height: 28px; }
  .device-col { order: 0; height: 520px; transform: scale(1.12); transform-origin: center; margin: 0; }
    .callout { display: block; }
}

/* tagline reveal */
.tagline { background: var(--a); padding: var(--sp-900) 0; }
.tagline p { max-width: 960px; font-size: 40px; line-height: 44px; font-weight: 500; letter-spacing: -0.03em; text-wrap: balance; color: var(--g); }
.js .tagline .w { opacity: 0.3; transition: opacity 500ms var(--ease); }
.js .tagline .w.on { opacity: 1; }
@media (min-width: 768px) { .tagline p { font-size: 72px; line-height: 1; } .tagline { padding: 120px 0; } }

/* sections */
.block { padding: var(--sp-700) 0; background: var(--g); color: var(--t); }
@media (min-width: 768px) { .block { padding: 120px 0; } }
.block h2 { margin: var(--sp-100) 0 var(--sp-200); }
.split { display: grid; grid-template-columns: 1fr; gap: var(--sp-500); align-items: start; }
.split > * { min-width: 0; }
.split .lead h2 { margin-top: var(--sp-100); }
.split .body > :first-child { margin-top: 0; }
@media (min-width: 1024px) {
  .split { grid-template-columns: 5fr 7fr; gap: var(--sp-900); }
  .split .lead { position: sticky; top: var(--sp-800); }
  .split .lead h2 { font-size: 72px; }
}
.grid3, .grid2 { display: grid; grid-template-columns: 1fr; gap: var(--sp-200); margin-top: var(--sp-500); }
.split .grid3, .split .grid2 { margin-top: 0; }
.card { padding: var(--sp-400); background: var(--s); border: 1px solid var(--l); border-radius: 24px; transition: border-color 500ms var(--ease), transform 500ms var(--ease); }
.card:hover { border-color: var(--a); transform: translateY(-2px); }
.card h3 { margin-top: var(--sp-200); font-size: 30px; line-height: 36px; letter-spacing: -0.03em; }
.card p:not(.label) { margin-top: var(--sp-100); color: var(--m); font-size: 18px; line-height: 28px; }
.pills { display: flex; flex-wrap: wrap; gap: var(--sp-75); margin-top: var(--sp-300); }
.pills span { padding: var(--sp-75) var(--sp-200); border: 1px solid var(--l); border-radius: 9999px; font-size: 14px; line-height: 20px; font-weight: 500; color: var(--t); }
.pills span::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: var(--sp-75); border-radius: 50%; background: var(--a); vertical-align: 2px; }

.steps { list-style: none; margin-top: var(--sp-400); border-top: 1px solid var(--l); }
.steps li { display: flex; gap: var(--sp-200); padding: var(--sp-300) 0; border-bottom: 1px solid var(--l); font-size: 22px; line-height: 28px; letter-spacing: -0.01em; }
.steps .n { flex-shrink: 0; width: var(--sp-500); padding-top: var(--sp-50); font-family: 'Geist Mono', ui-monospace, monospace; font-size: 14px; line-height: 20px; color: var(--a); }

.tabs { display: flex; gap: var(--sp-75); margin: 0 calc(-1 * var(--pad)); padding: 0 var(--pad); overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
@media (min-width: 1024px) { .tabs { margin-inline: 0; padding: 0; } }
.tab { flex: 0 0 auto; min-height: 44px; padding: var(--sp-75) var(--sp-300); font: inherit; font-size: 15px; line-height: 20px; font-weight: 600; color: inherit; background: transparent; border: 1px solid var(--pl); border-radius: 9999px; cursor: pointer; transition: background-color 300ms var(--ease), color 300ms var(--ease), transform 300ms var(--ease); }
.tab:hover { background: var(--pl); }
.tab:active { transform: scale(0.98); }
.tab[aria-selected="true"] { background: var(--g); border-color: var(--g); color: var(--t); }
.tabpanel { display: none; list-style: none; margin-top: var(--sp-300); border-top: 1px solid var(--pl); }
.tabpanel.on { display: block; animation: panelIn 500ms var(--ease); }
@keyframes panelIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.tabpanel li { padding: var(--sp-300) 0; border-bottom: 1px solid var(--pl); font-size: 22px; line-height: 28px; font-weight: 500; letter-spacing: -0.02em; }
.tabpanel li span { display: block; margin-top: var(--sp-75); max-width: 640px; color: var(--pm); font-size: 16px; line-height: 24px; font-weight: 400; letter-spacing: 0; }
@media (min-width: 768px) { .tabpanel li { font-size: 28px; line-height: 32px; } }

/* light section: the text colour used as a ground */
.block.paper { background: var(--t); color: var(--g); }
.block.paper h2 { color: var(--g); }
.block.paper .label { color: var(--g); }
.block.paper .sub { color: var(--pm); }

.faq { border-top: 1px solid var(--l); }
.faq details { border-bottom: 1px solid var(--l); }
.faq summary { list-style: none; display: flex; justify-content: space-between; align-items: center; gap: var(--sp-200); padding: var(--sp-300) 0; cursor: pointer; font-size: 22px; line-height: 28px; font-weight: 500; letter-spacing: -0.02em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex-shrink: 0; font-size: 32px; line-height: 32px; color: var(--a); transition: transform 500ms var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 var(--sp-300); max-width: 640px; color: var(--m); font-size: 18px; line-height: 28px; }

/* closing and footer */
.closing { text-align: center; padding: var(--sp-900) 0; background: var(--s); }
.closing h2 { margin: var(--sp-100) auto var(--sp-200); max-width: 760px; font-size: 48px; line-height: 1; }
@media (min-width: 768px) { .closing { padding: 160px 0; } .closing h2 { font-size: 96px; } }
.closing .sub { margin: 0 auto; max-width: 680px; }
.closing .row { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--sp-100); margin-top: var(--sp-400); }
.closing .steps { margin: var(--sp-500) auto 0; max-width: 560px; text-align: left; }
.fine { margin-top: var(--sp-300); color: var(--m); font-size: 14px; line-height: 20px; }
.fine .mono { color: var(--a); }
.copy-link { background: none; border: 0; cursor: pointer; font-family: 'Geist Mono', ui-monospace, monospace; font-size: 14px; line-height: 20px; color: var(--a); text-decoration: underline; padding: var(--sp-100) var(--sp-75); min-height: 44px; border-radius: 8px; word-break: break-all; transition: background-color 300ms var(--ease); }
.copy-link:hover { background: var(--g); }
footer { background: var(--g); border-top: 1px solid var(--l); padding: var(--sp-400) 0 var(--sp-600); font-size: 14px; line-height: 20px; color: var(--m); }
footer .wrap { display: flex; flex-wrap: wrap; gap: var(--sp-200) var(--sp-400); justify-content: space-between; }
footer a { color: var(--m); text-decoration: none; transition: color 300ms var(--ease); }
footer a:hover { color: var(--t); }
.foot-links { display: flex; flex-wrap: wrap; gap: var(--sp-200) var(--sp-300); }
#toast { position: fixed; bottom: var(--sp-300); left: 50%; transform: translateX(-50%); padding: var(--sp-75) var(--sp-200); background: var(--a); color: var(--g); border-radius: 9999px; font-size: 14px; line-height: 20px; font-weight: 500; opacity: 0; pointer-events: none; transition: opacity 300ms var(--ease); max-width: 90vw; }
#toast.show { opacity: 1; }

/* legal pages */
.prose-page { padding-top: var(--sp-900); }
.prose { max-width: 720px; }
.prose h1 { margin-top: var(--sp-100); font-size: 60px; line-height: 1; letter-spacing: -0.04em; }
.prose .meta { margin-top: var(--sp-200); font-size: 14px; line-height: 20px; color: var(--m); }
.prose h2 { margin: var(--sp-500) 0 var(--sp-100); font-size: 24px; line-height: 32px; letter-spacing: -0.01em; }
.prose p { margin-top: var(--sp-200); color: var(--m); }
.prose p:first-of-type { margin-top: var(--sp-300); }
.prose a { color: var(--a); text-underline-offset: 2px; }

/* scroll reveals */
.js .reveal { opacity: 0; transform: translateY(32px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }

.notfound { min-height: 100vh; display: flex; align-items: center; text-align: center; padding: var(--sp-900) 0; background: var(--g); }
.notfound h1 { font-size: 60px; line-height: 1; letter-spacing: -0.04em; }
.notfound .sub { margin: var(--sp-200) auto 0; }
.notfound .row { margin-top: var(--sp-400); display: flex; justify-content: center; }

@media (min-width: 768px) { .split .card h3 { font-size: 36px; line-height: 40px; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal, .menu li, .callout { transform: none; }
  .btn:hover, .card:hover { transform: none; }
  .tabpanel.on { animation: none; }
    .explode-wrap { height: auto; }
  .explode-sticky { position: static; height: auto; padding: var(--sp-700) 0; }
  .device-col { transform: none; margin-bottom: 0; }
  .callout { display: block; position: static; max-width: none; margin-top: var(--sp-75); text-align: left; opacity: 1; }
  .layer { transform: translateX(-50%) !important; }
}

/* live 3D speaker */
.device-col.gl { transform: none !important; margin: 0 0 var(--sp-75); height: 250px; order: -1; }
.device-col.gl .layer { display: none; }
.gl-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
@media (min-width: 861px) {
  .device-col.gl { order: 0; margin: 0; height: min(680px, calc(100svh - 110px)); }
}