:root {
  color-scheme: dark;
  --bg: #05070d;
  --bg-soft: #080c15;
  --surface: #0a101b;
  --surface-2: #0e1624;
  --text: #f7f9ff;
  --muted: #98a5ba;
  --line: rgba(255, 255, 255, 0.11);
  --cyan: #2fe0ff;
  --pink: #ff2ec4;
  --amber: #ffb020;
  --steel: #93a1b8;
  --max: 1180px;
  --header-height: 78px;
  --display: "Arial Narrow", "Roboto Condensed", Impact, sans-serif;
  --body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 18px); }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--bg); color: var(--text); font-family: var(--body); line-height: 1.6; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; }
::selection { background: var(--pink); color: #fff; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 2000; top: 10px; left: 10px; padding: 10px 16px; transform: translateY(-150%); background: var(--cyan); color: #031019; border-radius: 8px; font-weight: 800; text-decoration: none; transition: transform .2s; }
.skip-link:focus { transform: translateY(0); }

.site-header { position: fixed; z-index: 1000; inset: 0 0 auto; height: var(--header-height); border-bottom: 1px solid transparent; transition: background .25s ease, border-color .25s ease, backdrop-filter .25s ease; }
.site-header.scrolled { background: rgba(5, 7, 13, .88); border-bottom-color: var(--line); backdrop-filter: blur(18px); }
.header-inner { width: min(calc(100% - 40px), 1320px); height: 100%; margin: 0 auto; display: flex; align-items: center; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: #fff; text-decoration: none; flex: 0 0 auto; }
.brand-logo { width: 44px; height: 44px; object-fit: contain; filter: drop-shadow(0 0 10px rgba(255, 82, 20, .24)); }
.brand-name { font: 900 italic 21px/1 var(--display); letter-spacing: .035em; white-space: nowrap; }
.site-nav { display: flex; align-items: center; justify-content: center; gap: clamp(14px, 1.7vw, 28px); margin-left: auto; }
.site-nav a { position: relative; padding: 28px 0 25px; color: #aeb8c8; font-size: .78rem; font-weight: 800; letter-spacing: .055em; text-decoration: none; text-transform: uppercase; white-space: nowrap; transition: color .2s; }
.site-nav a::after { content: ""; position: absolute; right: 0; bottom: 20px; left: 0; height: 2px; transform: scaleX(0); background: var(--cyan); transition: transform .2s; }
.site-nav a:hover, .site-nav a.active { color: #fff; }
.site-nav a.active::after { transform: scaleX(1); }
.site-nav .nav-download { color: var(--cyan); }
.header-actions { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.language-toggle { width: 42px; height: 36px; border: 1px solid var(--line); border-radius: 7px; background: rgba(255,255,255,.04); color: #fff; cursor: pointer; font-size: .76rem; font-weight: 900; letter-spacing: .08em; }
.language-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.github-link { display: inline-flex; align-items: center; gap: 7px; color: #e8edf7; font-size: .78rem; font-weight: 800; text-decoration: none; }
.github-link svg { width: 20px; fill: currentColor; }
.sponsor-link { min-height: 36px; display: inline-flex; align-items: center; padding: 0 13px; border: 1px solid rgba(255,46,196,.48); border-radius: 7px; background: rgba(255,46,196,.1); color: #ffd5f5; font-size: .7rem; font-weight: 900; letter-spacing: .07em; text-decoration: none; text-transform: uppercase; transition: border-color .2s, background .2s, color .2s, box-shadow .2s; }
.sponsor-link:hover { border-color: var(--pink); background: rgba(255,46,196,.18); color: #fff; box-shadow: 0 0 24px rgba(255,46,196,.14); }
.menu-toggle { display: none; width: 44px; height: 40px; margin-left: auto; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.04); color: #fff; cursor: pointer; }
.menu-toggle > span:not(.sr-only) { display: block; width: 20px; height: 2px; margin: 4px auto; background: currentColor; transition: transform .2s, opacity .2s; }
.menu-toggle[aria-expanded="true"] > span:nth-of-type(2) { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] > span:nth-of-type(3) { opacity: 0; }
.menu-toggle[aria-expanded="true"] > span:nth-of-type(4) { transform: translateY(-6px) rotate(-45deg); }

.hero { position: relative; min-height: 100svh; overflow: hidden; display: grid; align-items: center; padding: calc(var(--header-height) + 70px) 0 80px; background: radial-gradient(circle at 80% 45%, #10233a 0, #07101d 28%, var(--bg) 67%); }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 180px; background: linear-gradient(transparent, var(--bg)); pointer-events: none; }
.hero-inner { position: relative; z-index: 2; width: min(calc(100% - 48px), var(--max)); margin: 0 auto; display: grid; grid-template-columns: minmax(0, .88fr) minmax(450px, 1.12fr); align-items: center; gap: 20px; }
.hero-copy { position: relative; z-index: 3; padding: 48px 0; }
.hero-version, .section-label { margin: 0 0 20px; color: var(--cyan); font-size: .74rem; font-weight: 900; letter-spacing: .2em; text-transform: uppercase; }
.hero h1 { margin: 0; font: 900 italic clamp(3.7rem, 7.2vw, 7.2rem)/.86 var(--display); letter-spacing: -.055em; text-transform: uppercase; text-wrap: balance; }
.hero h1 span, .hero h1 strong { display: block; }
.hero h1 strong { margin-top: .08em; color: transparent; background: linear-gradient(92deg, var(--cyan), #8df3ff 40%, var(--pink) 84%); background-clip: text; -webkit-background-clip: text; }
.hero-lead { max-width: 620px; margin: 32px 0 0; color: #c0c9d8; font-size: clamp(1rem, 1.25vw, 1.16rem); }
.hero-actions, .download-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 22px; border: 1px solid transparent; border-radius: 7px; font-size: .8rem; font-weight: 900; letter-spacing: .06em; text-decoration: none; text-transform: uppercase; transition: transform .2s, box-shadow .2s, border-color .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 2.3; }
.button-primary { background: var(--cyan); color: #031019; box-shadow: 0 10px 36px rgba(47,224,255,.18); }
.button-primary:hover { box-shadow: 0 14px 46px rgba(47,224,255,.32); }
.button-secondary { border-color: rgba(255,255,255,.2); background: rgba(255,255,255,.035); color: #fff; }
.button-secondary:hover { border-color: rgba(255,255,255,.5); }
.button-sponsor { border-color: rgba(255,46,196,.5); background: rgba(255,46,196,.1); color: #ffd5f5; box-shadow: 0 10px 36px rgba(255,46,196,.09); }
.button-sponsor:hover { border-color: var(--pink); background: rgba(255,46,196,.18); color: #fff; box-shadow: 0 14px 46px rgba(255,46,196,.2); }
.hero-facts { display: flex; flex-wrap: wrap; gap: 15px 24px; margin: 32px 0 0; padding: 0; color: #9eaabd; list-style: none; }
.hero-facts li { display: flex; align-items: center; gap: 8px; font-size: .76rem; }
.hero-facts li > span { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.hero-facts strong { font-weight: 700; }
.hero-media { position: relative; z-index: 1; width: min(66vw, 790px); margin: 0 0 0 -8%; filter: drop-shadow(0 34px 58px rgba(0,0,0,.55)); }
.hero-media::before { content: ""; position: absolute; z-index: 2; inset: 0; background: linear-gradient(90deg, var(--bg) 0%, transparent 27%, transparent 78%, rgba(5,7,13,.25)), linear-gradient(0deg, var(--bg), transparent 25%); pointer-events: none; }
.hero-media img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: 0 36px 36px 0; opacity: .92; }
.hero-media figcaption { position: absolute; z-index: 3; right: 24px; bottom: 18px; padding: 7px 11px; border: 1px solid rgba(255,255,255,.14); background: rgba(5,7,13,.68); color: #aeb9ca; backdrop-filter: blur(8px); border-radius: 5px; font-size: .68rem; font-weight: 700; letter-spacing: .05em; }
.hero-light { position: absolute; width: 420px; height: 800px; top: -250px; filter: blur(24px); opacity: .15; transform: rotate(28deg); pointer-events: none; }
.hero-light-cyan { right: 20%; background: linear-gradient(transparent, var(--cyan), transparent); animation: beam 8s ease-in-out infinite alternate; }
.hero-light-pink { right: -3%; background: linear-gradient(transparent, var(--pink), transparent); animation: beam 10s 1.4s ease-in-out infinite alternate-reverse; }
.hero-grid { position: absolute; inset: 48% 0 0; opacity: .15; background-image: linear-gradient(rgba(47,224,255,.2) 1px, transparent 1px), linear-gradient(90deg, rgba(47,224,255,.2) 1px, transparent 1px); background-size: 70px 70px; transform: perspective(420px) rotateX(62deg) scale(1.8); transform-origin: top center; mask-image: linear-gradient(#000, transparent 85%); }
.scroll-cue { position: absolute; z-index: 4; bottom: 27px; left: 50%; display: grid; gap: 8px; justify-items: center; transform: translateX(-50%); color: #718096; font-size: .58rem; font-weight: 900; letter-spacing: .18em; text-decoration: none; }
.scroll-cue i { width: 1px; height: 28px; background: linear-gradient(var(--cyan), transparent); animation: scrollLine 1.8s ease-in-out infinite; }

.section { position: relative; padding: 120px 0; }
.section-inner { position: relative; z-index: 2; width: min(calc(100% - 48px), var(--max)); margin: 0 auto; }
.section-dark { background: var(--bg); }
.section-heading { display: grid; grid-template-columns: 100px minmax(0, 760px); gap: 28px; align-items: start; margin-bottom: 58px; }
.section-index { margin: 4px 0 0; color: #4f5b6e; font: 700 .72rem/1 var(--body); letter-spacing: .12em; }
.section-heading .section-label { margin-bottom: 14px; }
.section h2 { margin: 0; font: 900 italic clamp(2.35rem, 5vw, 4.7rem)/.95 var(--display); letter-spacing: -.035em; text-transform: uppercase; }
.section-heading > div > p:last-child, .split-copy > p:not(.section-label), .download-panel > div > p, .license-block > p:not(.section-label) { max-width: 680px; margin: 20px 0 0; color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feature { position: relative; min-height: 330px; padding: 42px 34px; border-right: 1px solid var(--line); background: linear-gradient(180deg, transparent, rgba(255,255,255,.018)); }
.feature:last-child { border-right: 0; }
.feature-number { position: absolute; top: 24px; right: 25px; color: #414b5c; font-size: .65rem; font-weight: 800; }
.feature-icon { width: 48px; height: 48px; display: grid; place-items: center; margin-bottom: 48px; border: 1px solid currentColor; border-radius: 50%; font: 500 1.35rem/1 var(--body); }
.feature-icon.cyan { color: var(--cyan); box-shadow: inset 0 0 20px rgba(47,224,255,.08); }
.feature-icon.pink { color: var(--pink); box-shadow: inset 0 0 20px rgba(255,46,196,.08); }
.feature-icon.amber { color: var(--amber); box-shadow: inset 0 0 20px rgba(255,176,32,.08); }
.feature h3 { margin: 0; font: 900 italic 1.65rem/1 var(--display); text-transform: uppercase; }
.feature p { margin: 16px 0 0; color: var(--muted); font-size: .9rem; }
.flow-line { display: flex; align-items: center; gap: 22px; margin-top: 45px; }
.flow-line div { display: flex; align-items: center; gap: 12px; white-space: nowrap; }
.flow-line span { display: grid; place-items: center; width: 30px; height: 30px; border: 1px solid rgba(47,224,255,.35); border-radius: 50%; color: var(--cyan); font-size: .7rem; }
.flow-line strong { font-size: .76rem; letter-spacing: .04em; text-transform: uppercase; }
.flow-line i { height: 1px; flex: 1 1 80px; background: linear-gradient(90deg, rgba(47,224,255,.55), rgba(255,46,196,.3)); }

.section-stage { overflow: hidden; background: #060914; }
.stage-backdrop { position: absolute; inset: 0; opacity: .26; background: linear-gradient(90deg, #060914 0 35%, transparent 72%), linear-gradient(0deg, #060914, transparent 45%, #060914), url("../images/stage-command.jpg") center/cover; filter: saturate(1.15); }
.theme-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.theme { position: relative; min-height: 235px; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; padding: 26px; border: 1px solid var(--line); background: rgba(7,11,19,.79); backdrop-filter: blur(8px); }
.theme::before { content: ""; position: absolute; inset: 0 0 auto; height: 3px; background: currentColor; box-shadow: 0 0 24px currentColor; }
.theme-cyan { color: var(--cyan); }
.theme-amber { color: var(--amber); }
.theme-steel { color: var(--steel); }
.theme p { margin: 0 0 auto; font-size: .62rem; font-weight: 900; letter-spacing: .14em; }
.theme h3 { margin: 0 0 12px; color: #fff; font: 900 italic 2.05rem/1 var(--display); text-transform: uppercase; }
.theme span { color: #aeb8c8; font-size: .84rem; }
.stage-preview { margin: 24px 0 0; border: 1px solid var(--line); background: #05070d; }
.stage-preview img { width: 100%; aspect-ratio: 16/7; object-fit: cover; object-position: center 45%; }

.section-learn { background: linear-gradient(135deg, #080d17 0, #060912 70%); }
.split-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(520px, 1.1fr); gap: 90px; align-items: center; }
.split-copy h2 { max-width: 510px; }
.learning-metrics { display: flex; gap: 32px; margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--line); }
.learning-metrics div { display: grid; gap: 4px; }
.learning-metrics strong { color: var(--cyan); font: 900 italic 2rem/1 var(--display); }
.learning-metrics span { color: #7f8ba0; font-size: .68rem; text-transform: uppercase; }
.module-list { margin: 0; padding: 0; list-style: none; }
.module-list li { min-height: 74px; display: grid; grid-template-columns: 42px 1fr auto; gap: 16px; align-items: center; padding: 13px 17px; border-top: 1px solid var(--line); color: #667286; }
.module-list li:last-child { border-bottom: 1px solid var(--line); }
.module-list li.available { color: #fff; background: linear-gradient(90deg, rgba(47,224,255,.07), transparent); }
.module-list li > span { color: currentColor; font: 800 .72rem/1 var(--body); }
.module-list li > div { display: grid; }
.module-list strong { font: 900 italic 1.25rem/1.15 var(--display); text-transform: uppercase; }
.module-list small { color: #7f8ba0; }
.module-list b { color: var(--cyan); font-size: .62rem; letter-spacing: .1em; }

.section-songs { background: var(--bg); }
.song-rail { display: grid; grid-template-columns: 1.4fr .6fr; gap: 16px; }
.song-primary, .song-secondary { min-height: 230px; display: flex; align-items: center; border: 1px solid var(--line); background: var(--surface); }
.song-primary { gap: 28px; padding: 26px; }
.song-art { position: relative; width: 190px; aspect-ratio: 1; overflow: hidden; flex: 0 0 auto; background: radial-gradient(circle, rgba(47,224,255,.35), transparent 28%), repeating-conic-gradient(from 45deg, #111c2e 0 10deg, #0a0f18 10deg 20deg); }
.song-art::before { content: ""; position: absolute; inset: 14%; border: 1px solid var(--cyan); transform: rotate(45deg); box-shadow: 0 0 28px rgba(47,224,255,.4); }
.song-art span { position: absolute; inset: 34%; border: 3px solid var(--pink); transform: rotate(45deg); }
.song-primary p, .song-secondary p { margin: 0 0 12px; color: var(--cyan); font-size: .64rem; font-weight: 900; letter-spacing: .14em; }
.song-primary h3, .song-secondary h3 { margin: 0; font: 900 italic 2rem/1 var(--display); text-transform: uppercase; }
.song-primary div > span, .song-secondary small { display: block; margin-top: 12px; color: var(--muted); }
.song-primary > b { width: 46px; height: 46px; display: grid; place-items: center; margin-left: auto; border: 1px solid var(--cyan); border-radius: 50%; color: var(--cyan); }
.song-secondary { gap: 20px; padding: 28px; }
.song-secondary > span { display: grid; place-items: center; width: 54px; height: 54px; border: 1px solid var(--line); color: var(--steel); font-size: 1.5rem; }

.section-roadmap { background: linear-gradient(180deg, #070b13, #05070d); }
.roadmap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.roadmap-card { min-height: 365px; padding: 28px; border: 1px solid var(--line); background: rgba(255,255,255,.018); }
.roadmap-card > span { display: block; margin-bottom: 35px; font-size: .65rem; font-weight: 900; letter-spacing: .13em; }
.roadmap-card.now > span { color: var(--cyan); }
.roadmap-card.next > span { color: var(--pink); }
.roadmap-card.later > span { color: var(--steel); }
.roadmap-card h3 { min-height: 2em; margin: 0; font: 900 italic 1.8rem/1 var(--display); text-transform: uppercase; }
.roadmap-card ul { display: grid; gap: 14px; margin: 28px 0 0; padding: 0; color: #a6b1c3; list-style: none; font-size: .86rem; }
.roadmap-card li { position: relative; padding-left: 18px; }
.roadmap-card li::before { content: ""; position: absolute; top: .66em; left: 0; width: 6px; height: 1px; background: currentColor; }

.section-download { background: #07111a; }
.download-panel { display: grid; grid-template-columns: 1fr 310px; gap: 80px; align-items: center; padding: 62px; border: 1px solid rgba(47,224,255,.25); background: radial-gradient(circle at 80% 30%, rgba(47,224,255,.14), transparent 30%), linear-gradient(135deg, #0b1522, #060a12); box-shadow: inset 0 0 60px rgba(47,224,255,.025); }
.download-panel aside { padding: 28px; border-left: 1px solid rgba(47,224,255,.28); }
.download-panel aside > span { display: block; color: var(--cyan); font: 900 italic 3.8rem/.9 var(--display); }
.download-panel aside > strong { color: #8b98ab; font-size: .65rem; letter-spacing: .18em; }
.download-panel aside ul { display: grid; gap: 8px; margin: 22px 0 0; padding: 0; color: #aeb8c8; list-style: none; font-size: .76rem; }

.section-info { background: var(--bg); }
.info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.license-block > div { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 30px; }
.license-block a { color: var(--cyan); font-size: .76rem; font-weight: 800; text-underline-offset: 5px; }
.faq-block details { border-top: 1px solid var(--line); }
.faq-block details:last-child { border-bottom: 1px solid var(--line); }
.faq-block summary { position: relative; padding: 20px 38px 20px 0; cursor: pointer; font-weight: 750; list-style: none; }
.faq-block summary::-webkit-details-marker { display: none; }
.faq-block summary::after { content: "+"; position: absolute; right: 8px; color: var(--cyan); font-size: 1.25rem; }
.faq-block details[open] summary::after { content: "−"; }
.faq-block details p { margin: -5px 35px 20px 0; color: var(--muted); font-size: .88rem; }

.site-footer { padding: 72px max(24px, calc((100% - var(--max)) / 2)) 25px; border-top: 1px solid var(--line); background: #03050a; }
.footer-inner { display: grid; grid-template-columns: 1.6fr .6fr .6fr; gap: 50px; }
.footer-brand { margin-bottom: 20px; }
.footer-inner > div > p { max-width: 380px; color: #768297; font-size: .85rem; }
.footer-inner nav { display: grid; align-content: start; gap: 10px; }
.footer-inner nav a { color: #8f9bae; font-size: .8rem; text-decoration: none; }
.footer-inner nav a:hover { color: var(--cyan); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 55px; padding-top: 22px; border-top: 1px solid var(--line); color: #596579; font-size: .69rem; }

.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .65s ease, transform .65s ease; }
.js .reveal.visible { opacity: 1; transform: none; }
@keyframes beam { from { transform: translateX(-60px) rotate(24deg); } to { transform: translateX(80px) rotate(34deg); } }
@keyframes scrollLine { 0%,100% { opacity: .25; transform: scaleY(.55); transform-origin: top; } 50% { opacity: 1; transform: scaleY(1); } }

@media (max-width: 1080px) {
  :root { --header-height: 68px; }
  .header-inner { width: min(calc(100% - 28px), 1320px); }
  .menu-toggle { order: 3; display: block; margin-left: 0; }
  .site-nav { position: fixed; inset: var(--header-height) 0 0; display: grid; align-content: center; justify-items: center; gap: 5px; margin: 0; padding: 30px; background: rgba(5,7,13,.98); opacity: 0; visibility: hidden; transform: translateY(-12px); transition: opacity .22s, visibility .22s, transform .22s; }
  .site-nav.open { opacity: 1; visibility: visible; transform: none; }
  .site-nav a { padding: 9px; font: 900 italic clamp(1.8rem, 6vw, 3.2rem)/1 var(--display); }
  .site-nav a::after { bottom: 2px; }
  .header-actions { order: 2; margin-left: auto; }
  .github-link span { display: none; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-copy { max-width: 720px; padding-bottom: 0; }
  .hero-media { width: min(100%, 830px); margin: -25px 0 0 12%; opacity: .76; }
  .split-layout { grid-template-columns: 1fr; gap: 60px; }
  .split-copy { max-width: 700px; }
  .download-panel { gap: 42px; padding: 45px; }
}

@media (max-width: 760px) {
  .header-inner { gap: 12px; }
  .brand-name { display: none; }
  .header-actions { gap: 7px; }
  .language-toggle { width: 38px; }
  .github-link { display: none; }
  .hero { min-height: auto; padding-top: 118px; }
  .hero-inner, .section-inner { width: min(calc(100% - 32px), var(--max)); }
  .hero-copy { padding: 22px 0; }
  .hero h1 { font-size: clamp(3rem, 15vw, 4.6rem); }
  .hero-lead { margin-top: 24px; }
  .hero-actions .button { flex: 1 1 190px; }
  .hero-facts { display: grid; }
  .hero-media { width: calc(100% + 32px); margin: 8px -16px 0; }
  .hero-media::before { background: linear-gradient(0deg, var(--bg), transparent 25%); }
  .hero-media img { border-radius: 0; }
  .hero-media figcaption { right: 13px; bottom: 11px; }
  .scroll-cue { display: none; }
  .section { padding: 85px 0; }
  .section-heading { grid-template-columns: 1fr; gap: 20px; margin-bottom: 42px; }
  .feature-grid, .theme-list, .song-rail, .roadmap-grid, .info-grid { grid-template-columns: 1fr; }
  .feature { min-height: 270px; border-right: 0; border-bottom: 1px solid var(--line); }
  .feature:last-child { border-bottom: 0; }
  .feature-icon { margin-bottom: 34px; }
  .flow-line { display: grid; grid-template-columns: 1fr; gap: 12px; }
  .flow-line i { width: 1px; height: 20px; margin-left: 14px; }
  .stage-preview img { aspect-ratio: 4/3; object-position: 70% center; }
  .learning-metrics { gap: 18px; }
  .learning-metrics span { font-size: .59rem; }
  .module-list li { grid-template-columns: 34px 1fr; }
  .module-list b { display: none; }
  .song-primary { align-items: flex-start; flex-direction: column; }
  .song-art { width: 100%; aspect-ratio: 16/8; }
  .song-primary > b { position: absolute; display: none; }
  .download-panel { grid-template-columns: 1fr; padding: 31px 24px; }
  .download-panel aside { padding: 28px 0 0; border-top: 1px solid rgba(47,224,255,.28); border-left: 0; }
  .info-grid { gap: 75px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-inner > div { grid-column: 1 / -1; }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 430px) {
  .brand-logo { width: 39px; height: 39px; }
  .brand-name { font-size: 15px; }
  .sponsor-link { min-height: 34px; padding: 0 9px; font-size: .62rem; }
  .hero h1 { font-size: clamp(2.75rem, 14vw, 3.65rem); }
  .hero-version { font-size: .62rem; }
  .section h2 { font-size: 2.45rem; }
  .learning-metrics { display: grid; grid-template-columns: repeat(3, 1fr); }
  .learning-metrics strong { font-size: 1.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

@media print {
  .site-header, .scroll-cue, .hero-light, .hero-grid { display: none; }
  body, .section, .hero { background: #fff; color: #111; }
  .hero { min-height: auto; padding-top: 40px; }
  .section { break-inside: avoid; }
}