:root {
  color-scheme: light;
  --zera-bg: #f9f6ee;
  --zera-ink: #14130f;
  --zera-muted: #787267;
  --zera-line: #ded8cc;
  --zera-gold: #d6a957;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background:
    radial-gradient(circle at 50% 44%, #fffdf7 0, #fffdf700 42%),
    var(--zera-bg);
  color: var(--zera-ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.zera-page {
  min-height: 100dvh;
  padding: 32px 24px;
  display: grid;
  grid-template-rows: 1fr auto;
}

.zera-download {
  width: min(520px, 100%);
  margin: auto;
  text-align: center;
  transform: translateY(24px);
}

.zera-kicker {
  margin: 0 0 12px;
  color: var(--zera-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
}

h1 {
  margin: 0;
  font-size: clamp(52px, 8vw, 82px);
  font-weight: 570;
  letter-spacing: -.055em;
  line-height: .95;
}

.zera-copy {
  margin: 19px auto 34px;
  color: var(--zera-muted);
  font-size: 15px;
  line-height: 1.5;
}

.zera-download-button {
  position: relative;
  width: min(360px, 100%);
  height: 64px;
  padding: 0 24px;
  overflow: hidden;
  border: 0;
  border-radius: 18px;
  background: linear-gradient(180deg, #1b1a16 0%, #11100d 100%);
  color: #fffdf8;
  box-shadow:
    0 18px 42px #3326131c,
    0 4px 12px #33261314,
    inset 0 1px 0 #ffffff1c,
    inset 0 0 0 1px #ffffff0a;
  cursor: pointer;
  font: inherit;
  font-size: 16px;
  font-weight: 630;
  transition: transform 220ms cubic-bezier(.2,.8,.2,1), box-shadow 220ms ease;
  isolation: isolate;
}

.zera-download-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow:
    0 22px 48px #33261324,
    0 6px 16px #33261317,
    inset 0 1px 0 #ffffff24,
    inset 0 0 0 1px #ffffff0d;
}

.zera-download-button:active:not(:disabled) { transform: translateY(0) scale(.99); }

.zera-download-button:focus-visible {
  outline: 3px solid #a16f17;
  outline-offset: 4px;
}

.zera-download-button:disabled { cursor: progress; }

.zera-download-fill {
  position: absolute;
  z-index: -1;
  inset: 1px;
  overflow: hidden;
  border-radius: 17px;
  opacity: 0;
  background:
    radial-gradient(90% 140% at 18% 0%, #ffffff16 0%, transparent 54%),
    radial-gradient(100% 140% at 82% 110%, #e7bc6626 0%, transparent 56%),
    linear-gradient(115deg, #15140f 0%, #242016 48%, #15140f 100%);
  transition: opacity 500ms ease;
}

.zera-download-button.is-downloading .zera-download-fill {
  opacity: 1;
  animation: download-ambient 4.8s ease-in-out infinite alternate;
}

.zera-download-fill::before {
  content: "";
  position: absolute;
  inset: -65% -35%;
  background: linear-gradient(102deg, transparent 38%, #fff6da09 44%, #fff5d833 50%, #fff6da08 56%, transparent 62%);
  transform: translateX(-58%) rotate(-5deg);
}

.zera-download-button.is-downloading .zera-download-fill::before {
  animation: download-sheen 3.4s cubic-bezier(.45,0,.3,1) infinite;
}

.zera-download-fill::after {
  content: "";
  position: absolute;
  left: 9%;
  right: 9%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #e7bd6d88 22%, #fff0c3 50%, #e7bd6d88 78%, transparent);
  opacity: 0;
  transform: scaleX(.12);
  transform-origin: center;
}

.zera-download-button.is-downloading .zera-download-fill::after {
  animation: download-thread 2.7s ease-in-out infinite;
}

.zera-download-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.zera-download-dots { display: none; margin-left: 5px; gap: 4px; }
.zera-download-button.is-downloading .zera-download-dots { display: inline-flex; }
.zera-download-dots i {
  width: 2.5px;
  height: 2.5px;
  border-radius: 50%;
  background: currentColor;
  animation: dot-glow 1.4s ease-in-out infinite;
}
.zera-download-dots i:nth-child(2) { animation-delay: 160ms; }
.zera-download-dots i:nth-child(3) { animation-delay: 320ms; }

.zera-download-button.is-paused .zera-download-fill {
  opacity: .5;
  filter: saturate(.55);
}

.zera-download-button.is-paused .zera-download-dots { display: none; }

.zera-download-percent {
  position: absolute;
  right: 20px;
  top: 50%;
  translate: 0 -50%;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  opacity: .78;
}

.zera-download-status {
  min-height: 20px;
  margin: 14px 0 0;
  color: var(--zera-muted);
  font-size: 12px;
}

.zera-download-paused {
  margin: 9px 0 -5px;
  color: #8a8377;
  font-size: 10px;
  font-weight: 520;
  letter-spacing: .045em;
  line-height: 1;
}

.zera-download-paused[hidden] { display: none; }

.zera-download-status.is-error { color: #9b2f22; }

.try-zexir {
  width: max-content;
  margin: 0 auto;
  padding: 11px 14px;
  border-radius: 10px;
  color: var(--zera-ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 610;
  transition: background 160ms ease, transform 160ms ease;
}

.try-zexir:hover { background: #efe9dc; transform: translateY(-1px); }
.try-zexir:focus-visible { outline: 2px solid var(--zera-ink); outline-offset: 2px; }
.try-zexir span { display: inline-block; margin-left: 4px; transition: transform 160ms ease; }
.try-zexir:hover span { transform: translateX(3px); }

@keyframes dot-glow {
  0%, 65%, 100% { transform: scale(.72); opacity: .32; }
  32% { transform: scale(1); opacity: .92; }
}

@keyframes download-ambient {
  from { filter: brightness(.96) saturate(.9); }
  to { filter: brightness(1.08) saturate(1.08); }
}

@keyframes download-sheen {
  0%, 12% { transform: translateX(-58%) rotate(-5deg); opacity: 0; }
  28% { opacity: .85; }
  62% { opacity: .72; }
  82%, 100% { transform: translateX(58%) rotate(-5deg); opacity: 0; }
}

@keyframes download-thread {
  0%, 100% { opacity: .18; transform: scaleX(.14); }
  48% { opacity: .9; transform: scaleX(1); }
}

@media (max-width: 520px) {
  .zera-page { padding: 24px 18px; }
  .zera-download { transform: translateY(12px); }
  .zera-copy { max-width: 310px; }
  .zera-download-button { height: 60px; border-radius: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}