/* VANTA: chrome, graphite and cobalt. Shared rhythm keeps every section aligned. */
:root {
  color-scheme: dark;
  --bg: #090a0e;
  --surface: #0d0f17;
  --fg: #f3f3f6;
  --muted: #b7bac8;
  --subtle: #a4a8bb;
  --line: #343744;
  --blue: #5369ff;
  --focus: #aab7ff;
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --gutter: clamp(20px, 4.2vw, 80px);
  --section-space: clamp(44px, 6vw, 88px);
  --body-size: 1rem;
  --label-size: .75rem;
  --control-size: .875rem;
  --content: 1600px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; background: var(--bg); color: var(--fg); font: var(--body-size)/1.6 Arial, Helvetica, sans-serif; overflow-wrap: break-word; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--focus); outline-offset: 5px; }
button:disabled { cursor: default; opacity: .75; }
img { display: block; max-width: 100%; height: auto; }
::selection { background: var(--blue); color: #fff; }
.skip-link { position: fixed; top: 12px; left: var(--gutter); z-index: 30; padding: 12px 20px; background: var(--fg); color: var(--bg); transform: translateY(-160%); }
.skip-link:focus { transform: none; }
.header, .hero, .section, footer { padding-inline: max(var(--gutter), calc((100vw - var(--content)) / 2)); }
.header { min-height: 80px; display: flex; align-items: center; justify-content: space-between; gap: 28px; position: absolute; inset: 0 0 auto; z-index: 10; border-bottom: 1px solid var(--line); }
.logo { display: inline-flex; align-items: flex-start; font-size: 1.8125rem; font-weight: 900; line-height: 1; letter-spacing: -.06em; padding-block: 15px; }
.logo span { font-size: .75rem; margin: 1px 0 0 5px; letter-spacing: 0; }
.header nav { display: flex; align-items: center; gap: clamp(24px, 3vw, 44px); font-size: var(--control-size); }
.header nav a { color: var(--muted); min-height: 44px; display: flex; align-items: center; transition: color .2s; }
.header nav a:hover { color: #fff; }
.header-actions { display: flex; align-items: center; gap: 4px; }
.sound-button { min-height: 44px; display: flex; align-items: center; justify-content: center; gap: 9px; padding: 10px 0 10px 12px; background: transparent; color: var(--muted); font: var(--control-size)/1.3 var(--mono); }
.sound-button svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.4; flex-shrink: 0; }
.sound-button[aria-pressed='true'] { color: var(--focus); }
.sound-button:hover { color: #fff; }
.menu-button { display: none; }

/* The product has a reserved scene; readable copy never floats over the render. */
.hero { position: relative; isolation: isolate; display: grid; gap: 18px; min-height: 100svh; padding-top: 108px; background: radial-gradient(ellipse at 51% 42%, #171b36 0, transparent 48%), var(--bg); }
.hero::before { content: ''; position: absolute; inset: 80px 0 0; z-index: -1; pointer-events: none; background-image: linear-gradient(#8586a008 1px, transparent 1px), linear-gradient(90deg, #8586a008 1px, transparent 1px); background-size: 42px 42px; mask-image: radial-gradient(ellipse at center, black, transparent 75%); }
.hero-topline { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: start; gap: 8px 24px; color: var(--muted); font: var(--label-size)/1.5 var(--mono); position: relative; z-index: 2; }
.hero-topline > span { flex: 1 1 max-content; min-width: 0; max-width: 100%; overflow-wrap: normal; }
.hero-topline > span:last-child { text-align: right; }
.hero-title { position: absolute; top: clamp(155px, 20svh, 255px); left: 0; right: 0; z-index: -1; text-align: center; font-size: min(26vw, 430px); line-height: 1; font-weight: 900; letter-spacing: -.06em; color: #ededf4; opacity: .92; user-select: none; pointer-events: none; }
.product-scene .hero-title { top: 8%; }
.product-scene { position: relative; height: clamp(330px, calc(100svh - 380px), 600px); display: grid; grid-template-columns: minmax(145px, 1fr) minmax(0, 650px) minmax(145px, 1fr); align-items: center; gap: 20px; }
.aura { position: absolute; inset: 12% 25%; z-index: -1; background: #244be614; filter: blur(50px); border-radius: 50%; pointer-events: none; }
.hero-product { grid-column: 2; grid-row: 1; width: 100%; height: 100%; min-height: 0; object-fit: contain; filter: drop-shadow(0 28px 24px #0008); opacity: 1; transform: none; animation: arrive 1.2s cubic-bezier(.2, .75, .25, 1) both; }
.annotation { grid-row: 1; position: relative; font: var(--label-size)/1.6 var(--mono); color: #c2c5d4; }
.annotation i { display: block; width: 42px; height: 1px; background: #757e9e; margin-bottom: 12px; }
.annotation-left { grid-column: 1; align-self: end; margin-bottom: 80px; }
.annotation-right { grid-column: 3; text-align: right; align-self: end; margin-bottom: 80px; }
.annotation-right i { margin-left: auto; }
.hero-bottom { display: grid; grid-template-columns: minmax(0, 1fr) minmax(250px, 320px); gap: 48px; align-items: end; padding-bottom: 18px; position: relative; }
.micro { color: var(--subtle); font: var(--label-size)/1.6 var(--mono); }
.hero h1 { font-size: clamp(36px, 3.7vw, 60px); font-weight: 500; letter-spacing: -.05em; line-height: 1.06; margin: 12px 0 0; }
.hero-cta p { font-size: var(--body-size); line-height: 1.6; color: var(--muted); margin: 0 0 16px; }
.button { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 56px; padding: 16px 20px; background: #eeeff5; color: #101116; font-size: var(--control-size); line-height: 1.5; text-align: left; transition: background .2s, transform .2s; }
.button:hover { background: #cad3ff; }
.button:active { transform: translateY(1px); background: #aebcff; }
.button-mark { font-size: 1.375rem; line-height: 1; flex-shrink: 0; }
.hero-foot { min-height: 62px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 24px; color: var(--subtle); }
.serial, .scroll-cue { font: var(--label-size)/1.5 var(--mono); }
.scroll-cue { min-height: 44px; display: flex; align-items: center; gap: 24px; }
.scroll-cue span { color: var(--fg); }
.scroll-cue:hover { color: var(--fg); }

/* Shared section structure and readable type scale. */
.section { scroll-margin-top: 24px; }
.section-bar { display: flex; justify-content: space-between; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); color: var(--subtle); font: var(--label-size)/1.5 var(--mono); }
h2 { font-size: clamp(46px, 5.6vw, 88px); font-weight: 500; line-height: 1.01; letter-spacing: -.055em; margin: 0; }
h3 { font-weight: 400; }
.technology-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(36px, 6vw, 88px); padding: var(--section-space) 0 48px; }
.section-intro { color: var(--muted); font-size: var(--body-size); line-height: 1.7; max-width: 420px; margin: 28px 0 32px; }
.tech-tabs { display: flex; flex-wrap: wrap; gap: 26px; border-bottom: 1px solid var(--line); max-width: 460px; }
.tech-tabs button { position: relative; min-height: 48px; min-width: max-content; padding: 12px 0; background: transparent; color: var(--subtle); font-size: var(--control-size); }
.tech-tabs button:hover { color: #fff; }
.tech-tabs button[aria-selected='true'] { color: #fff; }
.tech-tabs button[aria-selected='true']::after { content: ''; position: absolute; bottom: -1px; left: 0; right: 0; height: 2px; background: var(--blue); }
#tech-panel { min-height: 184px; max-width: 460px; padding-top: 24px; }
#tech-panel h3 { font-size: 1.125rem; line-height: 1.4; margin: 0 0 12px; }
#tech-panel p { font-size: var(--body-size); color: var(--muted); line-height: 1.7; margin: 0; }
.exploded-scene { position: relative; display: grid; grid-template-rows: minmax(0, 1fr) auto; align-items: center; justify-items: center; min-width: 0; }
.exploded-scene img { grid-row: 1; width: 100%; max-width: 680px; max-height: 540px; object-fit: contain; position: relative; z-index: 1; filter: drop-shadow(0 20px 30px #2946ca18); transition: transform .65s; }
.exploded-scene[data-layer='silence'] img { transform: rotate(-3deg); }
.exploded-scene[data-layer='comfort'] img { transform: rotate(3deg); }
.orbit { position: absolute; width: 88%; top: 10%; aspect-ratio: 1; border: 1px solid #5766a326; border-radius: 50%; transform: rotateX(60deg); pointer-events: none; }
.tech-caption { justify-self: start; display: flex; gap: 16px; align-items: center; padding-top: 16px; }
.tech-caption > span { font-size: 4rem; font-weight: 400; line-height: 1; letter-spacing: -.07em; color: #a5b0ff; }
.tech-caption div { display: flex; flex-direction: column; gap: 6px; }
.tech-caption strong { font-size: 1.125rem; line-height: 1.2; font-weight: 400; }
.tech-caption div span, .diagram-code { font: var(--label-size)/1.5 var(--mono); color: var(--subtle); }
.diagram-code { position: absolute; top: 0; right: 0; }
.spec-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: var(--section-space); padding: 32px 0; }
.spec-strip > div { display: flex; flex-direction: column; gap: 14px; padding-inline: 26px; border-left: 1px solid var(--line); }
.spec-strip > div:first-child { border: 0; padding-left: 0; }
.spec-strip > div:last-child { padding-right: 0; }
.spec-strip span { font: var(--label-size)/1.6 var(--mono); color: var(--subtle); }
.spec-strip strong { font-size: clamp(24px, 2.6vw, 38px); font-weight: 400; line-height: 1.25; letter-spacing: -.04em; }
.experience { background: #0c0d13; }
.experience-top { display: flex; justify-content: space-between; align-items: end; gap: 40px; padding: var(--section-space) 0 44px; }
.experience-top p { font-size: var(--body-size); line-height: 1.7; color: var(--muted); margin: 0; max-width: 280px; }
.sound-space { min-height: 400px; position: relative; border: 1px solid var(--line); overflow: hidden; background: radial-gradient(ellipse at 72% 50%, #23326750, transparent 65%); }
.wave-container { position: absolute; inset: 0; opacity: .8; pointer-events: none; }
canvas { display: block; width: 100%; height: 100%; }
.sound-space-content { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: start; padding: 44px 48px 40px; width: min(72%, 660px); min-height: 400px; background: linear-gradient(90deg, #0d0f17 20%, #0d0f17ed 67%, transparent); }
.sound-space h3 { font-size: 1.875rem; font-weight: 400; line-height: 1.2; letter-spacing: -.04em; margin: 24px 0 12px; }
.sound-space p { font-size: var(--body-size); line-height: 1.7; color: var(--muted); max-width: 380px; margin: 0; }
.mode-switch { display: flex; flex-wrap: wrap; gap: 4px; padding: 5px; border: 1px solid #434a62; background: #111522; margin-top: 24px; max-width: 100%; }
.mode-switch button { flex: 1 1 auto; min-height: 44px; padding: 10px 16px; background: transparent; color: #c2c8dd; font-size: var(--control-size); line-height: 1.4; }
.mode-switch button:hover { background: #273250; color: #fff; }
.mode-switch button.active { color: #fff; background: #465de6; }
.mode-switch button:active { background: #3b4bc0; }
.mode-caption { font: var(--label-size)/1.5 var(--mono); color: var(--subtle); margin-top: 14px; }
#motion-toggle { position: relative; align-self: end; margin-top: 24px; z-index: 2; min-height: 44px; padding: 10px 14px; font-size: var(--control-size); line-height: 1.4; border: 1px solid #515b7b; background: #101522eb; color: #d7dcec; }
#motion-toggle:hover:not(:disabled) { background: #273250; border-color: var(--focus); }
#motion-toggle[aria-pressed='true'] { border-color: #aab7ff; }
.wave-unavailable .wave-container { display: none; }
.experience-notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(28px, 5vw, 80px); padding: 40px 0 var(--section-space); }
.experience-notes h3 { font-size: 1.125rem; line-height: 1.4; margin: 0 0 12px; }
.experience-notes p { color: var(--muted); font-size: var(--body-size); line-height: 1.7; max-width: 380px; margin: 0; }

/* Configurator: product and control column, with a full-size touch target. */
.choose-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: clamp(36px, 7vw, 110px); padding: 64px 0 var(--section-space); align-items: center; }
.choose-visual { position: relative; display: grid; grid-template-rows: minmax(0, 1fr) auto; place-items: center; background: radial-gradient(ellipse, #1b2347 0, transparent 65%); min-width: 0; }
.choose-word { position: absolute; top: 20%; left: 0; right: 0; font-size: min(14vw, 230px); line-height: 1; letter-spacing: -.07em; font-weight: 700; color: #2b3043; text-align: center; pointer-events: none; }
.choose-visual img { grid-row: 1; position: relative; width: 100%; z-index: 1; transition: filter .6s, transform .6s; }
.choose-visual img.silver { filter: saturate(0); }
.product-badge { grid-row: 2; font: var(--label-size)/1.5 var(--mono); color: var(--subtle); padding-top: 12px; position: relative; z-index: 2; text-align: center; }
.choose-copy { min-width: 0; }
.choose-copy h2 { margin-top: 18px; }
.choose-copy > p { font-size: var(--body-size); line-height: 1.7; color: var(--muted); margin: 24px 0 28px; }
.color-picker { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: var(--body-size); max-width: 460px; }
.color-picker > div { display: flex; gap: 12px; }
.swatch { border-radius: 50%; height: 44px; width: 44px; flex-shrink: 0; position: relative; background: transparent; padding: 7px; border: 1px solid transparent; transition: border-color .2s; }
.swatch::before { content: ''; position: absolute; inset: 7px; border-radius: 50%; border: 1px solid #9298b04d; }
.swatch.blue::before { background: linear-gradient(130deg, #8d99ff, #2542d8, #121f61); }
.swatch.silver::before { background: linear-gradient(130deg, #fff, #81828b, #c3c6d0); }
.swatch.selected { border-color: #aab7ff; }
.swatch:hover { border-color: #d8dfff; }
.swatch:active::before { transform: scale(.9); }
.included { font: var(--label-size)/1.7 var(--mono); color: var(--subtle); max-width: 460px; margin: 24px 0 28px; }
.included > div { display: grid; grid-template-columns: minmax(max-content, .4fr) minmax(0, 1fr); gap: 24px; margin: 12px 0; }
.included dd { text-align: right; margin: 0; color: #cbd0dd; }
.wide { width: 100%; max-width: 460px; }
.choose-copy p.save-note { font: var(--label-size)/1.6 var(--mono); margin: 14px 0 0; min-height: 39px; max-width: 460px; color: var(--subtle); }
.concept-note { color: var(--subtle); font: var(--label-size)/1.6 var(--mono); }
.faq { padding-bottom: var(--section-space); }
.faq-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: clamp(36px, 7vw, 110px); padding-top: 64px; }
.faq h2 { font-size: clamp(44px, 4.5vw, 66px); }
details { border-bottom: 1px solid var(--line); }
summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 64px; padding: 22px .5rem 22px 0; font-size: var(--body-size); line-height: 1.5; cursor: pointer; }
summary::-webkit-details-marker { display: none; }
summary:hover { color: #c9d3ff; }
summary > span { display: grid; place-items: center; width: 2rem; height: 2rem; font-size: 1.5rem; line-height: 1; flex-shrink: 0; color: #b0b9d5; transition: transform .25s; }
details[open] summary > span { transform: rotate(45deg); }
details p { font-size: var(--body-size); line-height: 1.8; color: var(--muted); max-width: 560px; margin: 0 0 24px; }
footer { padding-block: 32px 24px; border-top: 1px solid var(--line); }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 28px; }
.footer-top p { font-size: 1.375rem; line-height: 1.4; font-weight: 400; letter-spacing: -.025em; margin: 0; }
.footer-top > a:last-child { min-height: 44px; display: flex; align-items: center; font: var(--label-size)/1.5 var(--mono); color: var(--muted); }
.footer-bottom { display: flex; justify-content: space-between; gap: 32px; padding-top: 28px; color: var(--subtle); font: var(--label-size)/1.6 var(--mono); }
@keyframes arrive { from { opacity: 0; transform: translateY(18px) scale(.98) rotate(-3deg); } to { opacity: 1; transform: none; } }

/* Side labels remain readable over the decorative wordmark, including enlarged text. */
@media (min-width: 801px) {
  .annotation { isolation: isolate; }
  .annotation::before { content: ''; position: absolute; inset: -10px -12px; z-index: -1; background: #090a0ef5; box-shadow: 0 0 14px 8px #090a0ebd; pointer-events: none; }
}
@media (max-width: 1100px) {
  .product-scene { grid-template-columns: minmax(128px, 1fr) minmax(0, 560px) minmax(128px, 1fr); gap: 12px; }
  .hero h1 { font-size: clamp(34px, 4.3vw, 48px); }
  .hero-bottom { gap: 28px; grid-template-columns: minmax(0, 1fr) minmax(240px, 280px); }
  .technology-grid { gap: 32px; }
  .technology h2 { font-size: clamp(48px, 6vw, 66px); }
  .choose-grid, .faq-grid { gap: 36px; }
  .sound-space-content { width: 78%; padding-inline: 32px; }
  .spec-strip > div { padding-inline: 18px; }
}
@media (max-width: 800px) {
  .hero-title { top: 190px; }
  .product-scene { grid-template-columns: 1fr 1fr; grid-template-rows: minmax(0, 1fr) auto; height: clamp(360px, calc(100svh - 380px), 520px); gap: 14px 20px; }
  .hero-product { grid-column: 1 / -1; grid-row: 1; width: min(100%, 580px); justify-self: center; }
  .annotation { grid-row: 2; align-self: start; margin: 0; }
  .annotation-left { grid-column: 1; }
  .annotation-right { grid-column: 2; }
  .annotation i { width: 28px; margin-bottom: 8px; }
  .hero-bottom { grid-template-columns: minmax(0, 1fr) 240px; gap: 24px; }
  .hero h1 { font-size: clamp(31px, 4.2vw, 40px); }
  .technology-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .technology-copy { max-width: 600px; }
  .exploded-scene { min-height: 340px; max-width: 600px; width: 100%; justify-self: center; }
  .exploded-scene img { max-height: 380px; }
  .diagram-code { top: 8px; }
  .spec-strip { grid-template-columns: 1fr 1fr; gap: 32px 0; }
  .spec-strip > div:nth-child(3) { border-left: 0; padding-left: 0; }
  .spec-strip > div:nth-child(2n) { padding-right: 0; }
  .spec-strip strong { font-size: 2rem; }
  .experience-top { align-items: start; }
  .experience-top p { max-width: 150px; }
  .experience-notes { grid-template-columns: 1fr; gap: 28px; }
  .experience-notes p { max-width: 620px; }
  .choose-grid { grid-template-columns: 1fr; gap: 40px; padding-top: 32px; }
  .choose-visual { max-width: 560px; width: 100%; justify-self: center; }
  .choose-visual img { max-height: 460px; object-fit: contain; }
  .choose-word { font-size: 28vw; }
  .choose-copy { max-width: 600px; }
  .color-picker, .included, .wide, .choose-copy p.save-note { max-width: none; }
  .faq-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 650px) {
  :root { --gutter: clamp(20px, 5.4vw, 35px); --section-space: 48px; }
  .header { min-height: 72px; gap: 16px; }
  .logo { font-size: 1.625rem; }
  .header nav { display: none; position: absolute; top: 100%; inset-inline: 0; padding: 16px var(--gutter) 20px; gap: 8px; background: #0d0f17; border-bottom: 1px solid var(--line); }
  .header nav.open { display: flex; flex-direction: column; align-items: stretch; }
  .header nav a { font-size: 1.125rem; padding-block: 6px; }
  .sound-button { width: 44px; padding: 10px; }
  .sound-button span { display: none; }
  .menu-button { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; width: 44px; min-height: 44px; background: transparent; }
  .menu-button span { width: 20px; height: 1px; background: #d4d6e2; transition: transform .2s; }
  .menu-button[aria-expanded='true'] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-button[aria-expanded='true'] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .hero { padding-top: 92px; gap: 16px; min-height: 100svh; }
  .hero-topline { gap: 8px 20px; }
  .hero-topline > span { max-width: 100%; }
  .hero-topline > span:last-child { text-align: right; }
  .hero::before { inset-block-start: 72px; }
  .hero-title { top: clamp(146px, 22svh, 205px); font-size: 27vw; }
  .product-scene { height: clamp(245px, 39svh, 385px); gap: 10px 16px; }
  .hero-product { width: min(100%, 420px); }
  .aura { inset: 10% 8%; }
  .annotation { font-size: var(--label-size); line-height: 1.5; }
  .annotation i { width: 24px; margin-bottom: 6px; }
  .hero-bottom { grid-template-columns: minmax(0, 1fr); gap: 18px; padding-bottom: 8px; }
  .hero h1 { font-size: clamp(26px, 8.25vw, 50px); line-height: 1.06; margin-top: 10px; }
  .hero-cta { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
  .hero-cta p { flex: 1 1 130px; min-width: 0; margin: 0; font-size: var(--body-size); line-height: 1.5; }
  .hero-cta .button { flex: 1 1 170px; min-width: max-content; padding-inline: 14px; gap: 8px; white-space: nowrap; }
  .hero-foot { min-height: 60px; }
  .hero-foot .serial { display: none; }
  .scroll-cue { width: 100%; justify-content: space-between; }
  .section-bar { padding-block: 22px; gap: 18px; }
  .section-bar > span:last-child { text-align: right; }
  h2, .technology h2 { font-size: clamp(42px, 12vw, 66px); }
  .technology-grid { padding-top: 44px; padding-bottom: 32px; }
  .section-intro { margin-top: 24px; }
  .tech-tabs { gap: 26px; }
  #tech-panel { min-height: 174px; }
  .exploded-scene { min-height: 300px; }
  .exploded-scene img { max-height: 330px; }
  .tech-caption > span { font-size: 3.5rem; }
  .diagram-code { position: relative; top: auto; right: auto; grid-row: 3; justify-self: end; margin-top: 12px; }
  .orbit { top: 0; }
  .spec-strip { padding-block: 26px; gap: 26px 0; }
  .spec-strip > div { gap: 12px; padding-inline: 20px; }
  .spec-strip strong { font-size: 1.75rem; }
  .experience-top { display: block; padding-block: 44px 30px; }
  .experience-top p { margin-top: 24px; max-width: none; }
  .sound-space { min-height: 446px; }
  .sound-space-content { min-height: 446px; width: 100%; padding: 28px 24px 28px; background: linear-gradient(90deg, #0d0f17f5 0%, #0d0f17da 45%, #0d0f1770 100%); }
  .sound-space h3 { font-size: 1.6875rem; margin-top: 24px; }
  .sound-space p { max-width: 380px; }
  .wave-container { opacity: .82; }
  .mode-switch { width: 100%; }
  .mode-switch button { padding: 10px 12px; flex: 1 1 auto; overflow-wrap: break-word; }
  .experience-notes { padding-top: 32px; }
  .choose-grid { padding-top: 24px; gap: 32px; }
  .choose-visual img { max-height: 400px; }
  .choose-word { font-size: 40vw; top: 21%; }
  .choose-copy h2 { font-size: clamp(56px, 16vw, 80px); }
  .choose-copy > p { margin-top: 24px; }
  .faq-grid { padding-top: 44px; }
  .faq h2 { font-size: clamp(42px, 12vw, 60px); }
  summary { padding-block: 20px; }
  .footer-top { flex-wrap: wrap; gap: 18px; }
  .footer-top p { font-size: 1rem; }
  .footer-top > a:last-child { width: 100%; }
  .footer-bottom { gap: 24px; padding-top: 18px; }
  .footer-bottom > span:last-child { text-align: right; }
}
@media (max-width: 480px) {
  .mode-switch { flex-direction: column; }
  .mode-switch button { width: 100%; text-align: left; }
}
@media (max-width: 370px) {
  .hero-cta { flex-direction: column; align-items: stretch; gap: 14px; }
  .hero-cta p br { display: none; }
  .hero-cta p, .hero-cta .button { flex: none; width: 100%; }
  .hero h1 { font-size: 8.1vw; }
  .sound-space-content { padding-inline: 20px; }
  .included > div { grid-template-columns: 1fr; gap: 4px; }
  .included dd { text-align: left; }
}
@media (max-height: 660px) and (min-width: 651px) {
  .hero { min-height: 690px; }
  .product-scene { height: 310px; }
  .hero-title { top: 145px; }
}
/* User controls and system preferences share the same static presentation. */
.motion-paused { scroll-behavior: auto; }
.motion-paused *, .motion-paused *::before, .motion-paused *::after { animation: none !important; transition: none !important; }
.motion-paused .hero-product { opacity: 1; transform: none; }
.page-hidden *, .page-hidden *::before, .page-hidden *::after { animation-play-state: paused !important; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .hero-product { opacity: 1; transform: none; }
}