:root {
  --night: #070812;
  --night-2: #0d1020;
  --ink: #f7f8ff;
  --muted: #a7abc0;
  --cyan: #59f3ff;
  --violet: #936cff;
  --pink: #ff3dbb;
  --line: rgba(255,255,255,.14);
  --max: 1320px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--night); color: var(--ink); font-family: Arial, Helvetica, sans-serif; font-size: 16px; line-height: 1.55; }
a { color: inherit; }
.skip-link { position: fixed; top: -5rem; left: 1rem; z-index: 100; padding: .8rem 1rem; background: var(--cyan); color: #050610; font-weight: 900; }
.skip-link:focus { top: 1rem; }

.site-header { position: relative; z-index: 20; width: min(calc(100% - 3rem), var(--max)); min-height: 92px; margin: 0 auto; display: grid; grid-template-columns: 250px 1fr auto; gap: 2.5rem; align-items: center; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; width: 220px; text-decoration: none; }
.brand img { display: block; width: 100%; height: auto; }
.site-header nav { display: flex; justify-content: center; gap: clamp(1.2rem, 3vw, 2.8rem); }
.site-header nav a { color: var(--muted); font-size: .82rem; font-weight: 800; letter-spacing: .08em; text-decoration: none; text-transform: uppercase; }
.site-header nav a:hover { color: var(--cyan); }
.header-cta { padding: .65rem 0; border-bottom: 2px solid var(--cyan); font-size: .88rem; font-weight: 900; text-decoration: none; }
.menu-button { display: none; }

.hero { position: relative; isolation: isolate; width: 100%; min-height: calc(100vh - 92px); margin: 0 auto; padding: clamp(4rem, 8vh, 7rem) max(1.5rem, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(430px, .95fr); gap: clamp(3rem, 7vw, 7rem); align-items: center; }
.hero::after { content: ""; position: absolute; z-index: -5; inset: 0; background: linear-gradient(90deg, rgba(7,8,18,.98) 0%, rgba(7,8,18,.9) 37%, rgba(7,8,18,.42) 68%, rgba(7,8,18,.3) 100%), linear-gradient(0deg, rgba(7,8,18,.8), transparent 45%), url("assets/etherstrom-cosmic-hero.webp") center / cover no-repeat; }
.hero::before { content: ""; position: absolute; z-index: -3; inset: 8% -30vw 0; background-image: linear-gradient(rgba(89,243,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(89,243,255,.045) 1px, transparent 1px); background-size: 54px 54px; mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 70%, transparent); }
.hero-glow { position: absolute; z-index: -2; border-radius: 50%; filter: blur(95px); opacity: .23; }
.glow-one { width: 430px; height: 430px; right: 4%; top: 18%; background: var(--violet); opacity: .12; }
.glow-two { width: 300px; height: 300px; right: 30%; bottom: 5%; background: var(--cyan); }
.eyebrow { margin: 0 0 1.2rem; color: var(--cyan); font-size: .78rem; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; line-height: .94; }
h1 { max-width: 780px; margin-bottom: 2rem; font-size: clamp(4.2rem, 7.2vw, 7.4rem); font-weight: 900; letter-spacing: -.075em; }
h1 span { color: transparent; -webkit-text-stroke: 2px var(--cyan); text-shadow: 0 0 30px rgba(89,243,255,.18); }
.lead { max-width: 650px; margin: 0 0 2.4rem; color: var(--muted); font-size: clamp(1.08rem, 1.5vw, 1.3rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; }
.button { min-height: 56px; padding: .9rem 1.2rem; display: inline-flex; align-items: center; gap: .7rem; border: 1px solid var(--line); font-weight: 900; text-decoration: none; transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.button:hover { transform: translateY(-3px); border-color: var(--cyan); }
.button-primary { background: var(--ink); color: var(--night); }
.button-secondary { background: rgba(255,255,255,.04); }
.platform-dot { width: 11px; height: 11px; border-radius: 50%; }
.platform-dot.youtube { background: #ff2345; }
.platform-dot.suno { background: linear-gradient(135deg, #ffce4a, #bb4cff); }
.button:focus-visible, a:focus-visible, button:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; }

.signal-stage { position: relative; aspect-ratio: 1; min-width: 0; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.15); background: rgba(5,7,17,.42); box-shadow: 0 35px 90px rgba(0,0,0,.35); backdrop-filter: blur(8px); }
.signal-stage::before { content: ""; position: absolute; inset: 10%; border: 1px solid rgba(89,243,255,.32); border-radius: 50%; box-shadow: inset 0 0 80px rgba(89,243,255,.08), 0 0 80px rgba(147,108,255,.16); }
.signal-stage::after { content: "TRANSMISSION  /  01"; position: absolute; top: 1.2rem; left: 1.2rem; color: rgba(255,255,255,.72); font-size: .66rem; font-weight: 900; letter-spacing: .17em; }
.orbit { position: absolute; border: 1px solid rgba(255,255,255,.17); border-radius: 50%; animation: spin 18s linear infinite; }
.orbit::after { content: ""; position: absolute; top: 50%; left: -5px; width: 10px; height: 10px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 18px var(--cyan); }
.orbit-one { inset: 2%; }
.orbit-two { inset: 19%; animation-duration: 11s; animation-direction: reverse; transform: rotate(62deg); }
.orbit-two::after { background: var(--pink); box-shadow: 0 0 18px var(--pink); }
.core { position: relative; z-index: 2; width: 62%; aspect-ratio: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; border-radius: 50%; background: radial-gradient(circle at 35% 25%, #252b55, #0a0c18 58%, #05060d); border: 1px solid rgba(255,255,255,.22); box-shadow: 0 0 0 18px rgba(89,243,255,.035), 0 0 90px rgba(89,243,255,.19); font-size: clamp(2.5rem, 4vw, 4.6rem); font-weight: 900; letter-spacing: -.08em; line-height: .73; }
.core strong { color: var(--cyan); }
.core small { margin-top: 1.5rem; color: var(--muted); font-size: .62rem; letter-spacing: .22em; }
.equalizer { position: absolute; z-index: 3; bottom: 7%; left: 50%; height: 80px; display: flex; align-items: end; gap: 8px; transform: translateX(-50%); }
.equalizer i { width: 5px; height: 25%; background: linear-gradient(to top, var(--violet), var(--cyan)); box-shadow: 0 0 10px rgba(89,243,255,.55); animation: level 1.5s ease-in-out infinite alternate; }
.equalizer i:nth-child(2n) { animation-delay: -.8s; height: 70%; }
.equalizer i:nth-child(3n) { animation-delay: -.3s; height: 100%; }
.scroll-cue { position: absolute; left: 0; bottom: 2rem; display: flex; gap: .8rem; color: var(--muted); font-size: .72rem; font-weight: 900; letter-spacing: .15em; text-decoration: none; }
.scroll-cue span { color: var(--cyan); }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes level { to { height: 90%; } }

.transmission-strip { overflow: hidden; border-top: 1px solid rgba(89,243,255,.5); border-bottom: 1px solid rgba(89,243,255,.5); background: var(--cyan); color: #080913; }
.transmission-strip div { width: max-content; min-width: 100%; padding: 1rem 1.5rem; display: flex; justify-content: space-around; gap: 2rem; font-size: .75rem; font-weight: 900; letter-spacing: .15em; white-space: nowrap; }
.transmission-strip b { color: #6438dc; }

.platforms { padding: clamp(6rem, 10vw, 10rem) max(1.5rem, calc((100vw - var(--max)) / 2)); background: #f4f4f8; color: #0a0b12; }
.section-heading { display: grid; grid-template-columns: .65fr 1.35fr; gap: 2rem; margin-bottom: 4rem; }
.section-heading .eyebrow { color: #5c37e8; }
.section-heading h2, .worlds h2, .about h2 { margin-bottom: 0; font-size: clamp(3.2rem, 6vw, 6.5rem); font-weight: 900; letter-spacing: -.07em; }
.platform-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.platform-card { position: relative; min-height: 340px; padding: clamp(1.7rem, 3vw, 2.7rem); display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; color: white; text-decoration: none; transition: transform .22s ease; }
.platform-card:hover { transform: translateY(-7px); }
.platform-card::after { content: ""; position: absolute; width: 280px; height: 280px; right: -90px; bottom: -100px; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; box-shadow: 0 0 0 40px rgba(255,255,255,.04), 0 0 0 80px rgba(255,255,255,.025); }
.youtube-card { background: #e61a3c; }
.suno-card { background: linear-gradient(135deg, #5636e8, #9f35d5 55%, #ff6f4d); }
.card-number { font-size: .75rem; font-weight: 900; letter-spacing: .12em; }
.platform-card p { margin: 0 0 .7rem; color: rgba(255,255,255,.76); }
.platform-card h3 { margin: 0; font-size: clamp(3.5rem, 7vw, 7rem); font-weight: 900; letter-spacing: -.08em; }
.round-arrow { position: absolute; z-index: 2; right: 2rem; top: 2rem; width: 50px; height: 50px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.5); border-radius: 50%; font-size: 1.3rem; }
.feature-link { margin-top: 1rem; min-height: 108px; padding: 1.4rem 2rem; display: grid; grid-template-columns: auto 1fr auto; gap: 1.5rem; align-items: center; border: 1px solid rgba(10,11,18,.16); text-decoration: none; }
.feature-link:hover { background: white; }
.play { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 50%; background: #0a0b12; color: white; }
.feature-link small, .feature-link strong { display: block; }
.feature-link small { color: #6c6e78; font-size: .75rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.feature-link strong { font-size: 1.5rem; }
.feature-arrow { font-size: .75rem; font-weight: 900; letter-spacing: .12em; }

.signals { padding: clamp(7rem, 11vw, 11rem) max(1.5rem, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(3rem, 8vw, 8rem); background: radial-gradient(circle at 12% 20%, rgba(92,55,232,.22), transparent 32%), #080913; }
.signals-heading { position: sticky; top: 2rem; align-self: start; }
.signals-heading h2 { margin-bottom: 2rem; font-size: clamp(3.2rem, 5.8vw, 6rem); font-weight: 900; letter-spacing: -.07em; }
.signals-heading > p:last-child { max-width: 470px; color: var(--muted); font-size: 1.05rem; }
.signal-list { border-top: 1px solid var(--line); }
.signal-list a { min-height: 185px; padding: 1.8rem 0; display: grid; grid-template-columns: 55px minmax(0, 1fr) auto 55px; gap: 1.4rem; align-items: center; border-bottom: 1px solid var(--line); text-decoration: none; transition: padding .2s ease, background .2s ease; }
.signal-list a:hover { padding-left: 1rem; padding-right: 1rem; background: rgba(255,255,255,.045); }
.track-index, .track-world { color: var(--cyan); font-size: .7rem; font-weight: 900; letter-spacing: .14em; }
.track-title { font-size: clamp(2rem, 3.6vw, 4rem); font-weight: 900; letter-spacing: -.06em; line-height: .95; }
.track-arrow { width: 48px; height: 48px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; font-size: 1.2rem; }

.worlds { width: min(calc(100% - 3rem), var(--max)); margin: 0 auto; padding: clamp(7rem, 12vw, 12rem) 0; }
.worlds-intro { max-width: 900px; margin-bottom: 5rem; }
.world-list { border-top: 1px solid var(--line); }
.world-list article { min-height: 170px; padding: 2rem 0; display: grid; grid-template-columns: 80px minmax(260px, .8fr) 1fr; gap: 2rem; align-items: center; border-bottom: 1px solid var(--line); }
.world-list article > span { color: var(--cyan); font-size: .78rem; font-weight: 900; }
.world-list h3 { margin: 0; font-size: clamp(2rem, 4vw, 4rem); font-weight: 900; letter-spacing: -.055em; }
.world-list p { max-width: 580px; margin: 0; color: var(--muted); font-size: 1.04rem; }

.about { min-height: 700px; padding: clamp(6rem, 10vw, 10rem) max(1.5rem, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: .75fr 1.25fr; gap: clamp(3rem, 8vw, 8rem); align-items: center; background: linear-gradient(135deg, #121633, #321770 58%, #60165e); }
.about-mark { font-size: clamp(13rem, 26vw, 27rem); font-weight: 900; letter-spacing: -.15em; line-height: .7; color: transparent; -webkit-text-stroke: 2px rgba(255,255,255,.35); }
.about-mark span { color: var(--cyan); -webkit-text-stroke: 0; font-size: .3em; filter: drop-shadow(0 0 20px rgba(89,243,255,.8)); }
.about-copy > p:not(.eyebrow) { max-width: 670px; margin: 2rem 0; color: #c8cbe0; font-size: 1.16rem; }
.about-actions { display: flex; flex-wrap: wrap; gap: 1rem 2rem; }
.about-actions a { padding-bottom: .3rem; border-bottom: 2px solid var(--cyan); font-weight: 900; text-decoration: none; }

footer { width: min(calc(100% - 3rem), var(--max)); margin: 0 auto; padding: 2.5rem 0; display: grid; grid-template-columns: auto 1fr auto auto; gap: 2rem; align-items: center; color: var(--muted); font-size: .8rem; }
footer p { margin: 0; }
.footer-logo { color: var(--ink); font-weight: 900; letter-spacing: .12em; text-decoration: none; }
footer nav { display: flex; gap: 1.2rem; }
footer a { text-underline-offset: .25rem; }

.legal-page { width: min(calc(100% - 3rem), 820px); margin: 0 auto; padding: 3rem 0 8rem; }
.legal-brand { display: inline-block; margin-bottom: 5rem; color: var(--ink); font-size: 1rem; font-weight: 900; letter-spacing: .12em; text-decoration: none; }
.legal-page h1 { font-size: clamp(3.5rem, 9vw, 7rem); letter-spacing: -.07em; }
.legal-page h2 { margin: 3rem 0 .7rem; font-size: 1.5rem; }
.legal-page p, .legal-page li { color: var(--muted); }
.legal-note { padding: 1rem 1.2rem; border-left: 4px solid var(--cyan); background: rgba(255,255,255,.05); }

@media (max-width: 980px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-header nav { display: none; grid-column: 1 / -1; padding: 1rem 0 1.5rem; flex-direction: column; }
  .site-header nav.open { display: flex; }
  .header-cta { display: none; }
  .menu-button { display: block; justify-self: end; border: 0; background: transparent; color: var(--ink); font: inherit; font-weight: 900; }
  .hero { min-height: auto; grid-template-columns: 1fr; }
  .signal-stage { width: min(620px, 100%); margin: 0 auto; }
  .scroll-cue { display: none; }
  .section-heading, .signals, .about { grid-template-columns: 1fr; }
  .signals-heading { position: static; }
  .about-mark { font-size: clamp(12rem, 55vw, 24rem); }
  footer { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .site-header, .worlds, footer { width: min(calc(100% - 2rem), var(--max)); }
  .site-header { min-height: 78px; }
  .brand { width: 185px; }
  .hero { padding: 4rem 0 5rem; gap: 3rem; }
  h1 { font-size: clamp(3.7rem, 17vw, 5.4rem); }
  .hero-actions, .button { width: 100%; }
  .button { justify-content: center; }
  .signal-stage { width: 115%; margin-left: -7.5%; }
  .hero::after { background-position: 62% center; }
  .transmission-strip div { justify-content: flex-start; }
  .platform-grid { grid-template-columns: 1fr; }
  .platform-card { min-height: 280px; }
  .feature-link { padding: 1.2rem; grid-template-columns: auto 1fr; }
  .feature-arrow { display: none; }
  .signal-list a { min-height: 145px; grid-template-columns: 38px 1fr 45px; gap: .8rem; }
  .track-world { display: none; }
  .world-list article { grid-template-columns: 45px 1fr; gap: 1rem; }
  .world-list article p { grid-column: 2; }
  .about { min-height: auto; }
  footer { grid-template-columns: 1fr; gap: .8rem; }
  footer nav { margin: .8rem 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}