:root {
  --bg: #0c0d0b;
  --ink: #ecebe3;
  --dim: #8b8a80;
  --line: #2a2b26;
  --pinch: #d6ff4a;
  --bad: #ff6b4a;
  --ok: #9dffb0;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
html { min-height: 100%; }
body {
  min-height: 100vh;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  padding: 28px 20px 48px;
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}

.atmosphere {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: var(--bg);
}
.atmosphere-haze {
  position: absolute;
  left: -12%;
  right: -12%;
  bottom: 0;
  height: 54vh;
  background:
    radial-gradient(72% 78% at 50% 118%, rgba(214, 255, 74, 0.36), transparent 64%),
    radial-gradient(40% 56% at 14% 108%, rgba(214, 255, 74, 0.20), transparent 70%),
    radial-gradient(44% 58% at 88% 112%, rgba(214, 255, 74, 0.18), transparent 72%),
    radial-gradient(26% 40% at 36% 100%, rgba(214, 255, 74, 0.14), transparent 66%),
    radial-gradient(24% 36% at 66% 104%, rgba(214, 255, 74, 0.12), transparent 64%);
  filter: blur(26px);
}
.atmosphere-floor {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 44vh;
  background-image: url("brand/vapor-floor.webp");
  background-repeat: no-repeat;
  background-position: center bottom;
  background-size: cover;
  opacity: 0.9;
  -webkit-mask-image: linear-gradient(to top, #000 38%, transparent 100%);
  mask-image: linear-gradient(to top, #000 38%, transparent 100%);
}

header, main, footer { position: relative; z-index: 1; }

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 48px;
}

.brand { display: flex; gap: 10px; align-items: center; letter-spacing: 0.12em; }
.mark { width: 28px; height: 28px; color: var(--pinch); filter: drop-shadow(0 0 8px rgba(214, 255, 74, 0.35)); }
.kicker {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--pinch);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  text-shadow: 0 0 12px rgba(214, 255, 74, 0.28);
}
h1 { font-size: clamp(28px, 5vw, 42px); font-weight: 600; line-height: 1.1; margin: 8px 0 16px; }
.lede { color: var(--dim); font-size: 17px; line-height: 1.45; max-width: 38em; }

.panel {
  margin: 36px 0;
  border: 1px solid var(--line);
  padding: 18px 18px 16px;
  background: rgba(12, 13, 11, 0.82);
}
.row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.row span { color: var(--dim); font-family: "IBM Plex Mono", monospace; font-size: 12px; }
.row b { font-weight: 500; overflow-wrap: anywhere; text-align: right; }
.actions { display: flex; gap: 10px; margin-top: 16px; }

button {
  font: 500 13px/1 "IBM Plex Mono", monospace;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 10px 14px;
  cursor: pointer;
}
button:disabled { opacity: 0.4; cursor: not-allowed; }
button.primary {
  background: var(--pinch);
  color: #111;
  border-color: var(--pinch);
  box-shadow: 0 0 18px rgba(214, 255, 74, 0.22);
}
button:not(:disabled):hover { border-color: var(--ink); }

.err { color: var(--bad); font-size: 13px; }
.ok { color: var(--ok); font-size: 13px; overflow-wrap: anywhere; }
.skips {
  margin: 8px 0 0;
  padding-left: 1.2em;
  color: var(--dim);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  line-height: 1.45;
}

.how { margin-top: 48px; }
h2 { font-size: 14px; letter-spacing: 0.08em; text-transform: lowercase; color: var(--dim); }
ol { padding-left: 1.2em; color: var(--ink); line-height: 1.5; }
.tiny { color: var(--dim); font-size: 12px; }
code {
  display: block;
  margin-top: 6px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  overflow-wrap: anywhere;
}

footer {
  margin-top: 64px;
  display: flex;
  justify-content: space-between;
  color: var(--dim);
  font-size: 12px;
  font-family: "IBM Plex Mono", monospace;
}