:root {
  color-scheme: dark;
  --bg: #111210;
  --panel: #181916;
  --ink: #f2ece1;
  --muted: #c3bcb0;
  --line: #3c3830;
  --section-rule: #62503b;
  --accent: #d8b183;
  --nav-offset: 108px;
  --serif: Baskerville, "Iowan Old Style", Georgia, serif;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-offset); }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 var(--sans); }
a { color: inherit; text-decoration: none; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
p, h1, h2, h3, figure, dl, dd { margin: 0; }
strong { color: var(--ink); }
.shell { width: min(1230px, calc(100% - 112px)); margin-inline: auto; }
.skip { position: absolute; top: 10px; left: 10px; transform: translateY(-180%); padding: 10px 16px; background: var(--accent); color: var(--bg); z-index: 4; }
.skip:focus { transform: translateY(0); }

.site-header { position: sticky; top: 0; z-index: 3; background: var(--bg); border-bottom: 1px solid var(--line); }
.header-row { min-height: 86px; padding-block: 8px; display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.wordmark { position: relative; display: block; flex: none; width: clamp(88px, 10vw, 106px); aspect-ratio: 1.49; overflow: hidden; }
.wordmark img, .wordmark::after { position: absolute; top: 50%; left: 50%; display: block; width: 150%; transform: translate(-50%, -48%); }
.wordmark img { height: auto; filter: invert(1) grayscale(1) contrast(1.1) sepia(.12); mix-blend-mode: screen; }
/* Bring back the red A using its bounds in the original logo. */
.wordmark::after {
  content: "";
  aspect-ratio: 1;
  background: url("assets/fuse-audio-logo.png") center / contain no-repeat;
  clip-path: inset(62% 44.5% 31.5% 49.5%);
  mix-blend-mode: multiply;
  pointer-events: none;
}
.site-header nav { display: flex; align-items: center; gap: 36px; color: var(--muted); font-size: 13px; letter-spacing: .055em; }
.site-header nav a { display: flex; align-items: center; min-height: 44px; padding-inline: 4px; }
.site-header nav a:hover, .text-link:hover { color: var(--accent); }
.header-link { display: inline-flex; align-items: center; min-height: 44px; padding: 9px 15px; border: 1px solid #72604b; font-size: 13px; white-space: nowrap; }
.header-link:hover { border-color: var(--accent); }
.header-link span, .text-link span { color: var(--accent); margin-left: 6px; }

.hero-stage { background: radial-gradient(ellipse at 83% 48%, #2b2118 0%, var(--bg) 65%); }
.hero { display: grid; grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr); gap: clamp(28px, 4.2vw, 68px); align-items: center; padding-block: clamp(50px, 5.8vw, 85px); }
.eyebrow, .hero-figure figcaption { font: 600 10px/1.6 var(--sans); letter-spacing: .18em; }
.eyebrow { color: var(--accent); display: flex; align-items: center; gap: 11px; }
.indicator { flex: 0 0 26px; height: 1px; background: var(--accent); }
h1, h2, h3, .facts strong { font-family: var(--serif); font-weight: 400; }
h1 { font-size: clamp(54px, 7.25vw, 112px); line-height: .89; letter-spacing: -.045em; margin: 24px 0 27px; }
h1 span { color: var(--accent); font-style: italic; }
.hero-tagline { color: var(--ink); font-family: var(--serif); font-size: clamp(23px, 2.05vw, 30px); line-height: 1.18; margin-bottom: 12px; }
.lead { color: var(--muted); max-width: 42ch; font-size: clamp(15px, 1.25vw, 18px); }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 13px 24px; margin-top: 25px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 22px; min-height: 46px; padding: 10px 15px; background: var(--accent); color: #201910; font-weight: 650; font-size: 13px; letter-spacing: .02em; }
.button:hover { background: #e9c8a0; }
.text-link { font-size: 13px; font-weight: 600; }
.actions .text-link, .buyer-link .text-link { display: inline-flex; align-items: center; min-height: 44px; }
.hero-figure { min-width: 0; }
.hero-figure img { display: block; width: 100%; height: auto; aspect-ratio: 1.27; object-fit: cover; object-position: center 54%; }
.hero-figure figcaption { display: flex; justify-content: space-between; gap: 10px; color: var(--muted); padding-top: 11px; border-top: 1px solid #5e4c39; }
.hero-figure figcaption span:first-child { color: var(--accent); }

.facts { padding-block: 19px; border-block: 1px solid var(--section-rule); background: var(--panel); }
.facts .facts-title { margin-bottom: 10px; color: var(--accent); font: 650 11px/1.5 var(--sans); letter-spacing: .15em; text-transform: uppercase; }
.fact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.fact-grid > div { padding: 13px clamp(12px, 2.3vw, 30px) 1px; }
.fact-grid > div:first-child { padding-left: 0; }
.fact-grid > div + div { border-left: 1px solid var(--line); }
.facts strong, .facts span { display: block; }
.facts strong { font-size: clamp(20px, 2.15vw, 31px); line-height: 1.12; margin-bottom: 4px; }
.facts span { color: var(--muted); font-size: 14px; line-height: 1.45; }

.section { padding-block: clamp(61px, 7vw, 105px); }
.section-intro { margin-bottom: 34px; }
.section-kicker { display: flex; align-items: center; gap: 11px; margin-bottom: 15px; color: var(--accent); font: 650 13px/1.4 var(--sans); letter-spacing: .1em; }
.index { display: inline-grid; place-items: center; min-width: 34px; min-height: 30px; border: 1px solid var(--section-rule); font-size: 14px; letter-spacing: .03em; font-variant-numeric: tabular-nums; }
h2 { font-size: clamp(34px, 4.5vw, 65px); line-height: 1.01; letter-spacing: -.035em; }
h3 { font-size: clamp(25px, 2.1vw, 34px); line-height: 1.1; letter-spacing: -.02em; }
.section-intro > div p { max-width: 63ch; color: var(--muted); margin-top: 15px; font-size: 17px; }

.buyer-section { padding-block: clamp(51px, 6vw, 84px); border-bottom: 1px solid var(--section-rule); }
.buyer-section .section-intro { margin-bottom: 26px; }
.buyer-grid { display: grid; grid-template-columns: 1fr 1fr; border-block: 1px solid var(--line); }
.buyer-grid article { padding: clamp(17px, 2.7vw, 34px); }
.buyer-grid article + article { border-left: 1px solid var(--line); }
.buyer-grid h3 { margin-bottom: 10px; }
.buyer-grid .eyebrow { margin-bottom: 10px; }
.buyer-grid ul { color: var(--muted); padding-inline-start: 19px; margin: 0; }
.buyer-grid li + li { margin-top: 7px; }
.buyer-grid li::marker, .connection-steps li::marker { color: var(--accent); }
.buyer-link { margin-top: 16px; }

.design-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.design-grid article { padding: clamp(20px, 2.8vw, 39px); }
.design-grid article + article { border-left: 1px solid var(--line); }
.design-grid p:not(.eyebrow) { color: var(--muted); margin-top: 10px; }
.design-grid .eyebrow { margin-bottom: 14px; }
.led-feature { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 18px; padding: 17px clamp(12px, 2.8vw, 39px) 0; font-size: 14px; }
.led-feature h3 { font: 600 19px/1.3 var(--sans); letter-spacing: normal; }
.led-feature p { max-width: 70ch; margin-top: 5px; color: var(--muted); }
.led-timings > div { padding: 5px 0; border-bottom: 1px solid var(--line); }
.led-timings > div:first-child { padding-top: 0; }
.led-timings dt { font-weight: 600; }
.led-timings dd { color: var(--muted); }
.traffic-section { border-top: 1px solid var(--section-rule); }
.traffic-split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.traffic-split article { padding: clamp(18px, 3vw, 36px); background: var(--panel); }
.traffic-split article + article { border-left: 1px solid var(--line); background: #1b201c; }
.traffic-split h3 { margin-top: 9px; }
.traffic-split p:not(.eyebrow) { max-width: 48ch; margin-top: 7px; color: var(--muted); }
.traffic-types { margin-top: 20px; border-top: 1px solid var(--line); }
.traffic-types > div { display: grid; grid-template-columns: minmax(115px, .28fr) minmax(0, 1.72fr); gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.traffic-types dt { font-weight: 600; }
.traffic-types dd { color: var(--muted); }
.section-description { max-width: 80ch; color: var(--muted); margin-top: 15px; }

.setup { background: var(--panel); border-block: 1px solid var(--section-rule); }
.setup-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 2.1fr); gap: clamp(24px, 3.4vw, 48px); align-items: start; }
.setup-steps { border-top: 1px solid var(--line); padding-top: 17px; }
.connection-steps { margin: 14px 0 0; padding-inline-start: 23px; color: var(--muted); }
.connection-steps li + li { margin-top: 13px; }
.connection-steps li > strong { display: block; }
.connection-steps a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.direct-option { margin-top: 28px; padding: 17px 18px; border: 1px solid var(--line); background: var(--bg); color: var(--muted); }
.direct-option h4 { margin: 5px 0 8px; color: var(--ink); font: 400 21px/1.25 var(--serif); }
.direct-option p + p { margin-top: 10px; }
.setup-links { display: flex; flex-wrap: wrap; column-gap: 12px; }
.diagram-link { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; margin-top: 13px; padding-inline: 13px; border: 1px solid #72604b; color: var(--accent); font-size: 13px; font-weight: 600; }
.diagram-link:hover { color: var(--ink); border-color: var(--accent); }
.connection-diagram { border: 1px solid #564c3d; background: var(--bg); }
.connection-diagram img { display: block; width: 100%; height: auto; background: #fff; }
.connection-steps a:hover { color: var(--ink); }
.connection-diagram figcaption { padding: 14px clamp(14px, 2.5vw, 26px); color: var(--muted); font-size: 14px; }
.connection-diagram figcaption p { margin-top: 4px; }

.spec-section, .faq { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: clamp(25px, 7vw, 92px); }
.spec-list { border-top: 1px solid var(--line); }
.spec-list div { display: grid; grid-template-columns: minmax(125px, .68fr) minmax(0, 1.32fr); gap: 13px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.spec-list dt { color: var(--muted); }
.faq { border-top: 1px solid var(--section-rule); }
details { border-bottom: 1px solid var(--line); }
details:first-child { border-top: 1px solid var(--line); }
summary { padding: 15px 27px 15px 0; cursor: pointer; list-style: none; position: relative; font-weight: 600; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; color: var(--accent); font-size: 18px; }
details[open] summary::after { content: "−"; }
details p { color: var(--muted); padding: 0 21px 17px 0; }
details p a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
footer { background: var(--panel); border-top: 1px solid var(--line); }
.footer-row { min-height: 95px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; padding-block: 13px; }
.footer-row p { color: var(--muted); font-family: var(--serif); font-size: 23px; }

@media (max-width: 1020px) {
  .shell { width: calc(100% - 62px); }
  .setup-layout { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  :root { --nav-offset: 92px; }
  .shell { width: calc(100% - 42px); }
  .header-row { min-height: 69px; gap: 15px; }
  .site-header nav { gap: 18px; }
  .header-link { display: none; }
  .hero { grid-template-columns: 1fr; gap: 31px; padding-block: 48px 37px; }
  .hero-figure img { aspect-ratio: 1.35; }
  .spec-section, .faq { grid-template-columns: 1fr; gap: 20px; }
  .design-grid { grid-template-columns: 1fr; }
  .design-grid article + article { border-left: 0; border-top: 1px solid var(--line); }
}
@media (max-width: 550px) {
  .shell { width: calc(100% - 34px); }
  .site-header nav { gap: 13px; }
  .hero-stage { background: radial-gradient(ellipse at 76% 64%, #281f18 0%, var(--bg) 73%); }
  .fact-grid { grid-template-columns: 1fr; }
  .fact-grid > div { padding: 10px 0; }
  .fact-grid > div:last-child { padding-bottom: 0; }
  .fact-grid > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .facts strong { font-size: 23px; }
  .hero-figure figcaption { font-size: 9px; letter-spacing: .09em; }
  .buyer-grid, .led-feature, .traffic-split, .traffic-types > div, .spec-list div { grid-template-columns: 1fr; }
  .buyer-grid article + article, .traffic-split article + article { border-left: 0; border-top: 1px solid var(--line); }
  .led-feature { gap: 12px; }
  .traffic-types > div, .spec-list div { gap: 4px; }
  .footer-row p { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

.analytics-settings { padding: 0; min-height: 44px; border: 0; background: transparent; color: var(--muted); font: inherit; font-size: 13px; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.analytics-prompt { position: fixed; z-index: 5; bottom: 12px; right: 12px; width: min(380px, calc(100% - 24px)); padding: 16px; border: 1px solid var(--section-rule); background: var(--panel); box-shadow: 0 6px 24px #0007; }
.analytics-prompt h2 { margin-bottom: 5px; font: 650 17px/1.35 var(--sans); letter-spacing: normal; }
.analytics-prompt p { color: var(--muted); font-size: 14px; }
.analytics-actions { display: flex; gap: 8px; margin-top: 12px; }
.analytics-actions button { flex: 1; min-height: 44px; padding-inline: 8px; border: 1px solid var(--section-rule); background: transparent; color: var(--ink); font: 600 13px/1.3 var(--sans); cursor: pointer; }
.analytics-actions button:hover, .analytics-settings:hover { color: var(--accent); }
.analytics-actions button:focus-visible, .analytics-settings:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }