/* Base + CSS reset-ish */
*,
*::before,
*::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
  line-height: 1.5;
  background: #000;
  color: var(--text);
}

/* Light/Dark theme */
:root {
  --bg: #0b0c10;
  --card: #111318;
  --text: #f2f4f8;
  --muted: #b3b9c6;
  --brand: #7c8cff;
  --ring: rgba(124,140,255,.4);
  --stroke: #1b1f2a;
  --btn-bg: #ffffff;
  --btn-text: #0b0c10;
  --btn-outline: #2a2f3a;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fb;
    --card: #ffffff;
    --text: #0b0c10;
    --muted: #5b6472;
    --brand: #3b5bff;
    --ring: rgba(59,91,255,.25);
    --stroke: #e9ecf2;
    --btn-bg: #0b0c10;
    --btn-text: #ffffff;
    --btn-outline: #d6dbe6;
  }
}

/* Layout */
.wrap {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: clamp(24px, 3vw, 48px);
}
.card {
  width: min(720px, 92vw);
  background: var(--card);
  border: 1px solid var(--stroke);
  border-radius: 20px;
  padding: clamp(24px, 4vw, 48px);
  text-align: center;
  box-shadow:
    0 10px 30px rgba(0,0,0,.2),
    0 1px 0 rgba(255,255,255,.03) inset;
  position: relative;
  isolation: isolate;
}

/* Subtle animated accent ring */
.card::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background:
    radial-gradient(600px 200px at 50% 0, var(--ring), transparent 60%);
  z-index: -1;
  filter: blur(12px);
  opacity: .6;
  animation: pulse 4s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { opacity: .45; transform: scale(1); }
  50% { opacity: .75; transform: scale(1.01); }
}

/* Icon */
.icon {
  width: clamp(72px, 10vw, 4em);
  height: clamp(72px, 10vw, 4em);
  margin-inline: auto;
  margin-bottom: 16px;
  display: grid;
  place-items: center;
    font-size: 4.5em;}
}
.icon svg { fill: var(--brand); }

/* Typography */
h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.sub {
  margin: 0 auto 20px;
  max-width: 52ch;
  font-size: clamp(16px, 2.6vw, 18px);
  color: var(--muted);
}

/* Actions */
.actions {
  display: inline-flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 12px 0 8px;
}
.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease, border-color .15s ease;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid transparent;
  box-shadow: 0 6px 16px rgba(0,0,0,.15);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.outline {
  background: transparent;
  color: var(--text);
  border-color: var(--btn-outline);
  box-shadow: none;
}

/* Footnote */
.footnote {
  margin-top: 22px;
  color: var(--muted);
  font-size: 14px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 6px color-mix(in oklab, var(--brand) 10%, transparent);
}

/* Responsiveness helpers (already mostly fluid with clamps) */
@media (max-width: 380px) {
  .actions { gap: 8px; }
  .btn { padding: 9px 14px; font-size: 14px; }
}