:root {
  color-scheme: dark;
  --bg: #0a0d12;
  --ink: #d7dee6;
  --ink-dim: #8b96a5;
  --accent: #3b82f6;
  --glow: rgba(96, 150, 255, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100vh;
}

body {
  background: radial-gradient(120% 90% at 50% 15%, #10151f 0%, var(--bg) 60%);
  color: var(--ink);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  display: grid;
  place-items: center;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.022) 0px,
    rgba(255, 255, 255, 0.022) 1px,
    transparent 1px,
    transparent 3px
  );
  z-index: 2;
}

main {
  padding: 3rem 1.5rem 4rem;
  max-width: 42rem;
  text-align: center;
}

.mark {
  width: 96px;
  height: 96px;
  margin: 0 auto 2rem;
  overflow: hidden;
  border-radius: 50%;
  filter: drop-shadow(0 0 14px var(--glow));
}

.mark-image {
  display: block;
  width: 280px;
  height: 280px;
  margin: -8px 0 0 -92px;
  object-fit: cover;
  object-position: 50% 18%;
  mix-blend-mode: screen;
}

h1 {
  margin: 0 0 2.25rem;
  font-size: clamp(1.6rem, 7vw, 3.2rem);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-shadow: 0 0 18px var(--glow);
  white-space: nowrap;
}

p {
  margin: 0;
  font-size: clamp(0.95rem, 3.2vw, 1.15rem);
  letter-spacing: 0.06em;
}

.tagline {
  margin-bottom: 2.5rem;
  color: var(--ink);
  text-shadow: 0 0 12px var(--glow);
}

.signal {
  color: var(--ink-dim);
  line-height: 1.7;
}

.signal-last {
  margin-bottom: 2.5rem;
}

.standby {
  color: var(--accent);
  text-shadow: 0 0 10px var(--glow);
}

.typing::after,
body.typed .standby::after {
  content: "▌";
  margin-left: 0.1em;
  color: var(--accent);
  animation: caret-blink 1.05s steps(1) infinite;
}

.typing-pending {
  min-height: 1em;
}

@keyframes caret-blink {
  50% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .typing::after,
  body.typed .standby::after {
    animation: none;
  }
}