:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #07110e;
  color: #f3f8f5;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 15%, rgba(55, 214, 146, .13), transparent 30rem),
    radial-gradient(circle at 88% 85%, rgba(42, 129, 103, .12), transparent 28rem),
    #07110e;
}

.stage {
  width: min(1180px, calc(100% - 32px));
  min-height: 100svh;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 28px;
  padding: 28px 0 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  width: max-content;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -.03em;
}

.mark {
  display: flex;
  align-items: end;
  gap: 3px;
  width: 24px;
  height: 24px;
}

.mark i {
  display: block;
  width: 5px;
  border-radius: 99px;
  background: #54e59f;
  transform: rotate(22deg);
}

.mark i:nth-child(1) { height: 11px; }
.mark i:nth-child(2) { height: 18px; }
.mark i:nth-child(3) { height: 24px; }

.player-shell {
  position: relative;
  align-self: center;
  overflow: hidden;
  border: 1px solid rgba(189, 255, 224, .16);
  border-radius: 22px;
  background: #020504;
  box-shadow: 0 28px 90px rgba(0, 0, 0, .48), 0 0 0 1px rgba(255, 255, 255, .025) inset;
}

video {
  display: block;
  width: 100%;
  max-height: min(74svh, 760px);
  background: #020504;
}

.sound {
  position: absolute;
  top: 18px;
  right: 18px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 999px;
  padding: 10px 15px;
  background: rgba(4, 13, 10, .76);
  color: #fff;
  font: inherit;
  font-size: 13px;
  font-weight: 650;
  cursor: pointer;
  backdrop-filter: blur(14px);
  transition: transform .2s ease, background .2s ease, opacity .2s ease;
}

.sound:hover { transform: translateY(-1px); background: rgba(18, 47, 37, .9); }
.sound:focus-visible { outline: 3px solid #54e59f; outline-offset: 3px; }
.sound.hidden { opacity: 0; pointer-events: none; }

.sound-icon {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #54e59f;
  color: #07110e;
  font-weight: 900;
}

.eyebrow {
  margin: 0;
  font-size: 13px;
  letter-spacing: .02em;
  text-align: center;
}

.eyebrow a {
  color: #9ab0a7;
  text-decoration-color: rgba(84, 229, 159, .5);
  text-underline-offset: 4px;
  transition: color .2s ease, text-decoration-color .2s ease;
}

.eyebrow a:hover {
  color: #d5f7e6;
  text-decoration-color: #54e59f;
}

.eyebrow a:focus-visible {
  border-radius: 3px;
  outline: 3px solid #54e59f;
  outline-offset: 4px;
}

@media (max-width: 640px) {
  .stage { width: min(100% - 20px, 1180px); padding-top: 18px; gap: 18px; }
  .player-shell { border-radius: 14px; }
  .sound { top: 10px; right: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  .sound { transition: none; }
}