:root {
  --black: #050608;
  --ink: #111318;
  --white: #ffffff;
  --paper: #f4f6f8;
  --muted: #626873;
  --line: #d9dde3;
  --line-dark: #30343c;
  --blue: #1684f6;
  --blue-dark: #0d3fb8;
  --cyan: #00c4eb;
  --red: #ff1414;
  --yellow: #ffd30a;
  --magenta: #ee00c9;
  font-family: "Inter", "Google Sans", "Roboto", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--white); }
a { color: inherit; }
img { max-width: 100%; }
svg { width: 19px; height: 19px; flex: 0 0 auto; }
h1, h2, h3, p { margin-top: 0; }
.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 10px 14px; color: var(--white); background: var(--blue); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.scoreline { display: flex; justify-content: flex-end; gap: 28px; min-height: 34px; padding: 7px clamp(18px, 4vw, 64px); color: #d9e5ff; background: var(--blue-dark); font-size: 11px; font-weight: 800; }
.scoreline strong { color: var(--white); text-transform: uppercase; }
.site-header { position: sticky; z-index: 30; top: 0; display: grid; grid-template-columns: minmax(230px, 1fr) auto minmax(230px, 1fr); align-items: center; min-height: 82px; padding: 10px clamp(18px, 4vw, 64px); border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, 0.96); backdrop-filter: blur(16px); }
.brand { display: inline-flex; align-items: center; width: fit-content; text-decoration: none; }
.brand img { display: block; object-fit: contain; }
.brand-primary { width: 150px; height: 72px; object-position: left center; }
.brand-partner { width: 64px; height: 28px; margin-left: 18px; }
.site-header nav { display: flex; gap: 26px; }
.site-header nav a { color: #4e535d; font-size: 13px; font-weight: 800; text-decoration: none; }
.site-header nav a:hover, .site-header nav a:focus-visible { color: var(--blue-dark); }
.header-return { justify-self: end; display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 16px; border: 1px solid var(--line); border-radius: 4px; color: var(--blue-dark); background: var(--white); font-size: 12px; font-weight: 850; text-decoration: none; }
.header-return:hover { border-color: var(--blue); background: #f2f6ff; }

.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, 0.68fr); align-items: center; gap: clamp(44px, 8vw, 120px); min-height: min(780px, calc(100svh - 116px)); padding: 64px clamp(24px, 8vw, 128px); overflow: hidden; color: var(--white); background-color: var(--black); background-image: linear-gradient(90deg, rgba(5, 6, 8, 0.87) 0%, rgba(5, 6, 8, 0.77) 48%, rgba(5, 6, 8, 0.57) 100%), linear-gradient(180deg, rgba(5, 6, 8, 0.2) 0%, rgba(5, 6, 8, 0.67) 100%), url("/assets/usps-music-hero-art.jpg"); background-position: center; background-repeat: no-repeat; background-size: cover; }
.hero-copy { position: relative; z-index: 2; }
.eyebrow { margin: 0 0 17px; color: var(--cyan); font-size: 11px; font-weight: 900; letter-spacing: 0.12em; }
.hero h1 { max-width: 770px; margin-bottom: 24px; font-size: 72px; line-height: 0.96; letter-spacing: 0; }
.hero-title-lockup { display: grid; grid-template-columns: 150px minmax(0, 1fr); align-items: center; gap: 24px; max-width: 920px; margin-bottom: 24px; }
.hero-title-lockup img { display: block; width: 150px; height: auto; object-fit: contain; }
.hero-title-lockup h1 { margin: 0; font-size: 64px; }
.hero-lede { max-width: 710px; margin-bottom: 30px; color: #d5d8df; font-size: 20px; line-height: 1.58; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 0 22px; border: 1px solid transparent; border-radius: 4px; font-weight: 850; text-decoration: none; transition: transform 150ms ease, background-color 150ms ease, border-color 150ms ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { color: var(--white); background: var(--blue); }
.button-primary:hover { background: #3a81ff; }
.button-secondary { border-color: #555b65; color: var(--white); background: transparent; }
.button-secondary:hover { border-color: var(--magenta); }
.hero-facts { display: grid; grid-template-columns: repeat(4, minmax(105px, 1fr)); max-width: 780px; margin: 0; border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.hero-facts div { min-width: 0; padding: 18px 16px 18px 0; }
.hero-facts div + div { padding-left: 16px; border-left: 1px solid var(--line-dark); }
.hero-facts dt { margin-bottom: 7px; color: #8f949e; font-size: 9px; font-weight: 900; text-transform: uppercase; }
.hero-facts dd { margin: 0; color: var(--white); font-size: 13px; font-weight: 850; overflow-wrap: anywhere; }

.device-stage { display: flex; align-items: center; justify-content: center; min-height: 650px; }
.device-shell { position: relative; width: min(340px, 27vw); padding: 10px; border: 2px solid #777c86; border-radius: 54px; aspect-ratio: 9 / 19.5; background: #020204; box-shadow: 0 42px 100px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(238, 0, 201, 0.26); transform: rotate(1.5deg); }
.device-screen { width: 100%; height: 100%; overflow: hidden; border-radius: 44px; background: #000; }
.device-screen img { display: block; width: 100%; height: 100%; object-fit: cover; }
.camera { position: absolute; z-index: 2; top: 20px; left: 50%; width: 14px; height: 14px; border: 2px solid #292b31; border-radius: 50%; background: #030303; transform: translateX(-50%); }
.side-key { position: absolute; right: -7px; width: 5px; border-radius: 0 4px 4px 0; background: #626770; }
.side-key-one { top: 175px; height: 82px; }
.side-key-two { top: 280px; height: 122px; }

.standalone-notice { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 20px; padding: 26px clamp(24px, 8vw, 128px); border-bottom: 1px solid #e0b600; color: #261f00; background: var(--yellow); }
.standalone-notice > svg { width: 28px; height: 28px; }
.standalone-notice strong { display: block; margin-bottom: 5px; font-size: 18px; }
.standalone-notice p { max-width: 920px; margin: 0; line-height: 1.55; }
.standalone-notice a { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 900; text-decoration: none; }

.signal-section { padding: 92px clamp(24px, 8vw, 128px) 104px; }
.section-heading { display: grid; grid-template-columns: minmax(350px, 0.85fr) minmax(320px, 0.65fr); align-items: end; gap: 70px; max-width: 1180px; margin-bottom: 52px; }
.section-heading .eyebrow { grid-column: 1 / -1; color: var(--blue); }
.section-heading h2 { margin: 0; font-size: 56px; line-height: 1.02; }
.section-heading > p:last-child { margin: 0 0 3px; color: var(--muted); font-size: 17px; line-height: 1.6; }
.signal-flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; padding: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); list-style: none; }
.signal-flow li { position: relative; min-width: 0; padding: 30px 30px 34px 0; }
.signal-flow li + li { padding-left: 30px; border-left: 1px solid var(--line); }
.signal-flow li > span { display: block; margin-bottom: 36px; color: var(--blue); font-size: 12px; font-weight: 900; }
.signal-flow svg { width: 29px; height: 29px; margin-bottom: 20px; color: var(--magenta); }
.signal-flow h3 { margin-bottom: 10px; font-size: 22px; }
.signal-flow p { margin: 0; color: var(--muted); line-height: 1.6; }

.fidelity-band { display: grid; grid-template-columns: minmax(340px, 0.8fr) minmax(420px, 1.2fr); gap: clamp(50px, 9vw, 140px); padding: 86px clamp(24px, 8vw, 128px); color: var(--white); background: var(--blue-dark); }
.fidelity-band .eyebrow { color: #9de9ff; }
.fidelity-band h2 { max-width: 650px; margin: 0; font-size: 50px; line-height: 1.04; }
.fidelity-copy { display: grid; gap: 20px; align-content: center; }
.fidelity-copy p { margin: 0; color: #dce6ff; font-size: 17px; line-height: 1.67; }

.availability-section { display: grid; grid-template-columns: 1fr; background: var(--paper); }
.availability-art { position: relative; display: block; width: 100%; overflow: hidden; aspect-ratio: 2048 / 1239; color: var(--white); background: #07070a; }
.availability-art img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; transition: transform 240ms ease; }
.availability-art span { position: absolute; right: 28px; bottom: 26px; display: inline-flex; align-items: center; gap: 9px; min-height: 46px; padding: 0 17px; border: 1px solid rgba(255, 255, 255, 0.55); border-radius: 4px; color: var(--white); background: rgba(5, 6, 8, 0.78); backdrop-filter: blur(12px); font-size: 12px; font-weight: 900; text-decoration: none; }
.availability-art:hover img { transform: scale(1.008); }
.availability-copy { display: flex; flex-direction: column; justify-content: center; padding: 78px clamp(36px, 8vw, 126px); background: var(--paper); }
.availability-copy .eyebrow { color: var(--blue); }
.availability-copy h2 { max-width: 760px; margin-bottom: 24px; font-size: 54px; line-height: 1.04; }
.availability-copy > p:not(.eyebrow) { max-width: 720px; color: var(--muted); font-size: 18px; line-height: 1.67; }
.availability-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 15px; }
.text-link { color: var(--blue-dark); font-weight: 850; text-decoration-thickness: 1px; text-underline-offset: 5px; }

.support-section { padding: 92px clamp(24px, 8vw, 128px) 104px; }
.support-heading { max-width: 850px; margin-bottom: 42px; }
.support-heading .eyebrow { color: var(--blue); }
.support-heading h2 { margin: 0; font-size: 54px; line-height: 1.04; }
.support-statements { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.support-statements article { min-width: 0; padding: 36px 42px 40px 0; }
.support-statements article + article { padding-left: 42px; border-left: 1px solid var(--line); }
.support-statements p { max-width: 620px; margin: 24px 0 0; font-size: 19px; font-weight: 800; line-height: 1.55; }
.support-logos { display: flex; align-items: center; gap: 28px; min-height: 122px; }
.support-logos img { width: 118px; height: 118px; object-fit: contain; }
.aes-logo { display: block; width: 250px; height: 111px; object-fit: contain; object-position: left center; }
.support-statements .text-link { display: inline-block; margin-top: 18px; }

footer { display: grid; grid-template-columns: 1fr minmax(300px, 720px); align-items: center; gap: 40px; padding: 34px clamp(24px, 6vw, 92px); border-top: 6px solid var(--blue); color: #b7bbc4; background: var(--black); }
.footer-brand { display: flex; align-items: center; gap: 12px; color: var(--white); }
.footer-brand img { width: 40px; height: 40px; padding: 4px; object-fit: contain; border-radius: 4px; background: var(--white); }
.footer-brand span { display: grid; }
.footer-brand small { color: #9ca0aa; }
footer p { margin: 0; font-size: 12px; line-height: 1.6; text-align: right; }

.button:focus-visible, .header-return:focus-visible, .site-header a:focus-visible, .text-link:focus-visible, .standalone-notice a:focus-visible, .availability-art:focus-visible { outline: 3px solid rgba(22, 132, 246, 0.38); outline-offset: 3px; }

@media (max-width: 1100px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-header nav { grid-row: 2; grid-column: 1 / -1; justify-content: center; padding: 11px 0 3px; border-top: 1px solid var(--line); }
  .hero { grid-template-columns: minmax(0, 1fr) minmax(300px, 0.58fr); }
  .hero h1 { font-size: 58px; }
  .hero-title-lockup { grid-template-columns: 124px minmax(0, 1fr); gap: 18px; }
  .hero-title-lockup img { width: 124px; }
  .hero-title-lockup h1 { font-size: 52px; }
  .device-shell { width: min(320px, 31vw); }
  .signal-flow { grid-template-columns: repeat(2, 1fr); }
  .signal-flow li:nth-child(3) { padding-left: 0; border-top: 1px solid var(--line); border-left: 0; }
  .signal-flow li:nth-child(4) { border-top: 1px solid var(--line); }
}

@media (max-width: 760px) {
  .scoreline { justify-content: space-between; gap: 10px; padding: 6px 14px; }
  .scoreline span:nth-child(2) { display: none; }
  .site-header { min-height: auto; padding: 10px 16px 0; }
  .brand-primary { width: 112px; height: 64px; }
  .brand-partner { width: 48px; height: 21px; margin-left: 12px; }
  .site-header nav { justify-content: flex-start; gap: 22px; overflow-x: auto; }
  .site-header nav a { flex: 0 0 auto; }
  .header-return { min-height: 40px; padding: 0 11px; font-size: 0; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding: 56px 20px 66px; }
  .hero h1 { font-size: 47px; }
  .hero-title-lockup { grid-template-columns: 92px minmax(0, 1fr); gap: 14px; }
  .hero-title-lockup img { width: 92px; }
  .hero-title-lockup h1 { font-size: 39px; }
  .hero-lede { font-size: 17px; }
  .hero-actions .button { flex: 1 1 100%; }
  .hero-facts { grid-template-columns: repeat(2, 1fr); }
  .hero-facts div:nth-child(3) { padding-left: 0; border-top: 1px solid var(--line-dark); border-left: 0; }
  .hero-facts div:nth-child(4) { border-top: 1px solid var(--line-dark); }
  .device-stage { min-height: 0; }
  .device-shell { width: min(330px, 88vw); }
  .standalone-notice { grid-template-columns: auto 1fr; gap: 14px; padding: 24px 20px; }
  .standalone-notice a { grid-column: 2; }
  .signal-section { padding: 66px 20px 76px; }
  .section-heading { grid-template-columns: 1fr; gap: 20px; margin-bottom: 34px; }
  .section-heading h2 { font-size: 39px; }
  .signal-flow { grid-template-columns: 1fr; }
  .signal-flow li, .signal-flow li + li, .signal-flow li:nth-child(3) { padding: 28px 0; border-top: 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .signal-flow li:last-child { border-bottom: 0; }
  .signal-flow li > span { margin-bottom: 20px; }
  .fidelity-band { grid-template-columns: 1fr; gap: 30px; padding: 64px 20px; }
  .fidelity-band h2 { font-size: 39px; }
  .availability-section { grid-template-columns: 1fr; }
  .availability-art { min-height: 0; aspect-ratio: 4 / 3; }
  .availability-art img { object-position: center top; }
  .availability-art span { right: 16px; bottom: 16px; }
  .availability-copy { padding: 64px 20px 72px; }
  .availability-copy h2 { font-size: 40px; }
  .support-section { padding: 66px 20px 76px; }
  .support-heading h2 { font-size: 40px; }
  .support-statements { grid-template-columns: 1fr; }
  .support-statements article, .support-statements article + article { padding: 30px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .support-statements article:last-child { border-bottom: 0; }
  footer { grid-template-columns: 1fr; gap: 20px; padding: 28px 20px; }
  footer p { text-align: left; }
}

@media (max-width: 430px) {
  .brand-primary { width: 100px; height: 60px; }
  .brand-partner { width: 43px; height: 19px; margin-left: 10px; }
  .hero h1 { font-size: 42px; }
  .support-logos { gap: 18px; }
  .support-logos img { width: 102px; height: 102px; }
  .aes-logo { width: 220px; height: 98px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}